1 /*******************************************************************
2  * This file is part of the Emulex Linux Device Driver for         *
3  * Fibre Channel Host Bus Adapters.                                *
4  * Copyright (C) 2017-2019 Broadcom. All Rights Reserved. The term *
5  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.  *
6  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
7  * EMULEX and SLI are trademarks of Emulex.                        *
8  * www.broadcom.com                                                *
9  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
10  *                                                                 *
11  * This program is free software; you can redistribute it and/or   *
12  * modify it under the terms of version 2 of the GNU General       *
13  * Public License as published by the Free Software Foundation.    *
14  * This program is distributed in the hope that it will be useful. *
15  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
16  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
17  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
18  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
19  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
20  * more details, a copy of which can be found in the file COPYING  *
21  * included with this package.                                     *
22  *******************************************************************/
23 
24 #include <linux/blkdev.h>
25 #include <linux/delay.h>
26 #include <linux/dma-mapping.h>
27 #include <linux/idr.h>
28 #include <linux/interrupt.h>
29 #include <linux/module.h>
30 #include <linux/kthread.h>
31 #include <linux/pci.h>
32 #include <linux/spinlock.h>
33 #include <linux/ctype.h>
34 #include <linux/aer.h>
35 #include <linux/slab.h>
36 #include <linux/firmware.h>
37 #include <linux/miscdevice.h>
38 #include <linux/percpu.h>
39 #include <linux/msi.h>
40 #include <linux/irq.h>
41 #include <linux/bitops.h>
42 #include <linux/crash_dump.h>
43 
44 #include <scsi/scsi.h>
45 #include <scsi/scsi_device.h>
46 #include <scsi/scsi_host.h>
47 #include <scsi/scsi_transport_fc.h>
48 #include <scsi/scsi_tcq.h>
49 #include <scsi/fc/fc_fs.h>
50 
51 #include <linux/nvme-fc-driver.h>
52 
53 #include "lpfc_hw4.h"
54 #include "lpfc_hw.h"
55 #include "lpfc_sli.h"
56 #include "lpfc_sli4.h"
57 #include "lpfc_nl.h"
58 #include "lpfc_disc.h"
59 #include "lpfc.h"
60 #include "lpfc_scsi.h"
61 #include "lpfc_nvme.h"
62 #include "lpfc_nvmet.h"
63 #include "lpfc_logmsg.h"
64 #include "lpfc_crtn.h"
65 #include "lpfc_vport.h"
66 #include "lpfc_version.h"
67 #include "lpfc_ids.h"
68 
69 /* Used when mapping IRQ vectors in a driver centric manner */
70 static uint32_t lpfc_present_cpu;
71 
72 static void lpfc_get_hba_model_desc(struct lpfc_hba *, uint8_t *, uint8_t *);
73 static int lpfc_post_rcv_buf(struct lpfc_hba *);
74 static int lpfc_sli4_queue_verify(struct lpfc_hba *);
75 static int lpfc_create_bootstrap_mbox(struct lpfc_hba *);
76 static int lpfc_setup_endian_order(struct lpfc_hba *);
77 static void lpfc_destroy_bootstrap_mbox(struct lpfc_hba *);
78 static void lpfc_free_els_sgl_list(struct lpfc_hba *);
79 static void lpfc_free_nvmet_sgl_list(struct lpfc_hba *);
80 static void lpfc_init_sgl_list(struct lpfc_hba *);
81 static int lpfc_init_active_sgl_array(struct lpfc_hba *);
82 static void lpfc_free_active_sgl(struct lpfc_hba *);
83 static int lpfc_hba_down_post_s3(struct lpfc_hba *phba);
84 static int lpfc_hba_down_post_s4(struct lpfc_hba *phba);
85 static int lpfc_sli4_cq_event_pool_create(struct lpfc_hba *);
86 static void lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *);
87 static void lpfc_sli4_cq_event_release_all(struct lpfc_hba *);
88 static void lpfc_sli4_disable_intr(struct lpfc_hba *);
89 static uint32_t lpfc_sli4_enable_intr(struct lpfc_hba *, uint32_t);
90 static void lpfc_sli4_oas_verify(struct lpfc_hba *phba);
91 static uint16_t lpfc_find_cpu_handle(struct lpfc_hba *, uint16_t, int);
92 static void lpfc_setup_bg(struct lpfc_hba *, struct Scsi_Host *);
93 
94 static struct scsi_transport_template *lpfc_transport_template = NULL;
95 static struct scsi_transport_template *lpfc_vport_transport_template = NULL;
96 static DEFINE_IDR(lpfc_hba_index);
97 #define LPFC_NVMET_BUF_POST 254
98 
99 /**
100  * lpfc_config_port_prep - Perform lpfc initialization prior to config port
101  * @phba: pointer to lpfc hba data structure.
102  *
103  * This routine will do LPFC initialization prior to issuing the CONFIG_PORT
104  * mailbox command. It retrieves the revision information from the HBA and
105  * collects the Vital Product Data (VPD) about the HBA for preparing the
106  * configuration of the HBA.
107  *
108  * Return codes:
109  *   0 - success.
110  *   -ERESTART - requests the SLI layer to reset the HBA and try again.
111  *   Any other value - indicates an error.
112  **/
113 int
lpfc_config_port_prep(struct lpfc_hba * phba)114 lpfc_config_port_prep(struct lpfc_hba *phba)
115 {
116 	lpfc_vpd_t *vp = &phba->vpd;
117 	int i = 0, rc;
118 	LPFC_MBOXQ_t *pmb;
119 	MAILBOX_t *mb;
120 	char *lpfc_vpd_data = NULL;
121 	uint16_t offset = 0;
122 	static char licensed[56] =
123 		    "key unlock for use with gnu public licensed code only\0";
124 	static int init_key = 1;
125 
126 	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
127 	if (!pmb) {
128 		phba->link_state = LPFC_HBA_ERROR;
129 		return -ENOMEM;
130 	}
131 
132 	mb = &pmb->u.mb;
133 	phba->link_state = LPFC_INIT_MBX_CMDS;
134 
135 	if (lpfc_is_LC_HBA(phba->pcidev->device)) {
136 		if (init_key) {
137 			uint32_t *ptext = (uint32_t *) licensed;
138 
139 			for (i = 0; i < 56; i += sizeof (uint32_t), ptext++)
140 				*ptext = cpu_to_be32(*ptext);
141 			init_key = 0;
142 		}
143 
144 		lpfc_read_nv(phba, pmb);
145 		memset((char*)mb->un.varRDnvp.rsvd3, 0,
146 			sizeof (mb->un.varRDnvp.rsvd3));
147 		memcpy((char*)mb->un.varRDnvp.rsvd3, licensed,
148 			 sizeof (licensed));
149 
150 		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
151 
152 		if (rc != MBX_SUCCESS) {
153 			lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
154 					"0324 Config Port initialization "
155 					"error, mbxCmd x%x READ_NVPARM, "
156 					"mbxStatus x%x\n",
157 					mb->mbxCommand, mb->mbxStatus);
158 			mempool_free(pmb, phba->mbox_mem_pool);
159 			return -ERESTART;
160 		}
161 		memcpy(phba->wwnn, (char *)mb->un.varRDnvp.nodename,
162 		       sizeof(phba->wwnn));
163 		memcpy(phba->wwpn, (char *)mb->un.varRDnvp.portname,
164 		       sizeof(phba->wwpn));
165 	}
166 
167 	/*
168 	 * Clear all option bits except LPFC_SLI3_BG_ENABLED,
169 	 * which was already set in lpfc_get_cfgparam()
170 	 */
171 	phba->sli3_options &= (uint32_t)LPFC_SLI3_BG_ENABLED;
172 
173 	/* Setup and issue mailbox READ REV command */
174 	lpfc_read_rev(phba, pmb);
175 	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
176 	if (rc != MBX_SUCCESS) {
177 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
178 				"0439 Adapter failed to init, mbxCmd x%x "
179 				"READ_REV, mbxStatus x%x\n",
180 				mb->mbxCommand, mb->mbxStatus);
181 		mempool_free( pmb, phba->mbox_mem_pool);
182 		return -ERESTART;
183 	}
184 
185 
186 	/*
187 	 * The value of rr must be 1 since the driver set the cv field to 1.
188 	 * This setting requires the FW to set all revision fields.
189 	 */
190 	if (mb->un.varRdRev.rr == 0) {
191 		vp->rev.rBit = 0;
192 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
193 				"0440 Adapter failed to init, READ_REV has "
194 				"missing revision information.\n");
195 		mempool_free(pmb, phba->mbox_mem_pool);
196 		return -ERESTART;
197 	}
198 
199 	if (phba->sli_rev == 3 && !mb->un.varRdRev.v3rsp) {
200 		mempool_free(pmb, phba->mbox_mem_pool);
201 		return -EINVAL;
202 	}
203 
204 	/* Save information as VPD data */
205 	vp->rev.rBit = 1;
206 	memcpy(&vp->sli3Feat, &mb->un.varRdRev.sli3Feat, sizeof(uint32_t));
207 	vp->rev.sli1FwRev = mb->un.varRdRev.sli1FwRev;
208 	memcpy(vp->rev.sli1FwName, (char*) mb->un.varRdRev.sli1FwName, 16);
209 	vp->rev.sli2FwRev = mb->un.varRdRev.sli2FwRev;
210 	memcpy(vp->rev.sli2FwName, (char *) mb->un.varRdRev.sli2FwName, 16);
211 	vp->rev.biuRev = mb->un.varRdRev.biuRev;
212 	vp->rev.smRev = mb->un.varRdRev.smRev;
213 	vp->rev.smFwRev = mb->un.varRdRev.un.smFwRev;
214 	vp->rev.endecRev = mb->un.varRdRev.endecRev;
215 	vp->rev.fcphHigh = mb->un.varRdRev.fcphHigh;
216 	vp->rev.fcphLow = mb->un.varRdRev.fcphLow;
217 	vp->rev.feaLevelHigh = mb->un.varRdRev.feaLevelHigh;
218 	vp->rev.feaLevelLow = mb->un.varRdRev.feaLevelLow;
219 	vp->rev.postKernRev = mb->un.varRdRev.postKernRev;
220 	vp->rev.opFwRev = mb->un.varRdRev.opFwRev;
221 
222 	/* If the sli feature level is less then 9, we must
223 	 * tear down all RPIs and VPIs on link down if NPIV
224 	 * is enabled.
225 	 */
226 	if (vp->rev.feaLevelHigh < 9)
227 		phba->sli3_options |= LPFC_SLI3_VPORT_TEARDOWN;
228 
229 	if (lpfc_is_LC_HBA(phba->pcidev->device))
230 		memcpy(phba->RandomData, (char *)&mb->un.varWords[24],
231 						sizeof (phba->RandomData));
232 
233 	/* Get adapter VPD information */
234 	lpfc_vpd_data = kmalloc(DMP_VPD_SIZE, GFP_KERNEL);
235 	if (!lpfc_vpd_data)
236 		goto out_free_mbox;
237 	do {
238 		lpfc_dump_mem(phba, pmb, offset, DMP_REGION_VPD);
239 		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
240 
241 		if (rc != MBX_SUCCESS) {
242 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
243 					"0441 VPD not present on adapter, "
244 					"mbxCmd x%x DUMP VPD, mbxStatus x%x\n",
245 					mb->mbxCommand, mb->mbxStatus);
246 			mb->un.varDmp.word_cnt = 0;
247 		}
248 		/* dump mem may return a zero when finished or we got a
249 		 * mailbox error, either way we are done.
250 		 */
251 		if (mb->un.varDmp.word_cnt == 0)
252 			break;
253 		if (mb->un.varDmp.word_cnt > DMP_VPD_SIZE - offset)
254 			mb->un.varDmp.word_cnt = DMP_VPD_SIZE - offset;
255 		lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
256 				      lpfc_vpd_data + offset,
257 				      mb->un.varDmp.word_cnt);
258 		offset += mb->un.varDmp.word_cnt;
259 	} while (mb->un.varDmp.word_cnt && offset < DMP_VPD_SIZE);
260 	lpfc_parse_vpd(phba, lpfc_vpd_data, offset);
261 
262 	kfree(lpfc_vpd_data);
263 out_free_mbox:
264 	mempool_free(pmb, phba->mbox_mem_pool);
265 	return 0;
266 }
267 
268 /**
269  * lpfc_config_async_cmpl - Completion handler for config async event mbox cmd
270  * @phba: pointer to lpfc hba data structure.
271  * @pmboxq: pointer to the driver internal queue element for mailbox command.
272  *
273  * This is the completion handler for driver's configuring asynchronous event
274  * mailbox command to the device. If the mailbox command returns successfully,
275  * it will set internal async event support flag to 1; otherwise, it will
276  * set internal async event support flag to 0.
277  **/
278 static void
lpfc_config_async_cmpl(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmboxq)279 lpfc_config_async_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
280 {
281 	if (pmboxq->u.mb.mbxStatus == MBX_SUCCESS)
282 		phba->temp_sensor_support = 1;
283 	else
284 		phba->temp_sensor_support = 0;
285 	mempool_free(pmboxq, phba->mbox_mem_pool);
286 	return;
287 }
288 
289 /**
290  * lpfc_dump_wakeup_param_cmpl - dump memory mailbox command completion handler
291  * @phba: pointer to lpfc hba data structure.
292  * @pmboxq: pointer to the driver internal queue element for mailbox command.
293  *
294  * This is the completion handler for dump mailbox command for getting
295  * wake up parameters. When this command complete, the response contain
296  * Option rom version of the HBA. This function translate the version number
297  * into a human readable string and store it in OptionROMVersion.
298  **/
299 static void
lpfc_dump_wakeup_param_cmpl(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmboxq)300 lpfc_dump_wakeup_param_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
301 {
302 	struct prog_id *prg;
303 	uint32_t prog_id_word;
304 	char dist = ' ';
305 	/* character array used for decoding dist type. */
306 	char dist_char[] = "nabx";
307 
308 	if (pmboxq->u.mb.mbxStatus != MBX_SUCCESS) {
309 		mempool_free(pmboxq, phba->mbox_mem_pool);
310 		return;
311 	}
312 
313 	prg = (struct prog_id *) &prog_id_word;
314 
315 	/* word 7 contain option rom version */
316 	prog_id_word = pmboxq->u.mb.un.varWords[7];
317 
318 	/* Decode the Option rom version word to a readable string */
319 	if (prg->dist < 4)
320 		dist = dist_char[prg->dist];
321 
322 	if ((prg->dist == 3) && (prg->num == 0))
323 		snprintf(phba->OptionROMVersion, 32, "%d.%d%d",
324 			prg->ver, prg->rev, prg->lev);
325 	else
326 		snprintf(phba->OptionROMVersion, 32, "%d.%d%d%c%d",
327 			prg->ver, prg->rev, prg->lev,
328 			dist, prg->num);
329 	mempool_free(pmboxq, phba->mbox_mem_pool);
330 	return;
331 }
332 
333 /**
334  * lpfc_update_vport_wwn - Updates the fc_nodename, fc_portname,
335  *	cfg_soft_wwnn, cfg_soft_wwpn
336  * @vport: pointer to lpfc vport data structure.
337  *
338  *
339  * Return codes
340  *   None.
341  **/
342 void
lpfc_update_vport_wwn(struct lpfc_vport * vport)343 lpfc_update_vport_wwn(struct lpfc_vport *vport)
344 {
345 	uint8_t vvvl = vport->fc_sparam.cmn.valid_vendor_ver_level;
346 	u32 *fawwpn_key = (u32 *)&vport->fc_sparam.un.vendorVersion[0];
347 
348 	/* If the soft name exists then update it using the service params */
349 	if (vport->phba->cfg_soft_wwnn)
350 		u64_to_wwn(vport->phba->cfg_soft_wwnn,
351 			   vport->fc_sparam.nodeName.u.wwn);
352 	if (vport->phba->cfg_soft_wwpn)
353 		u64_to_wwn(vport->phba->cfg_soft_wwpn,
354 			   vport->fc_sparam.portName.u.wwn);
355 
356 	/*
357 	 * If the name is empty or there exists a soft name
358 	 * then copy the service params name, otherwise use the fc name
359 	 */
360 	if (vport->fc_nodename.u.wwn[0] == 0 || vport->phba->cfg_soft_wwnn)
361 		memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
362 			sizeof(struct lpfc_name));
363 	else
364 		memcpy(&vport->fc_sparam.nodeName, &vport->fc_nodename,
365 			sizeof(struct lpfc_name));
366 
367 	/*
368 	 * If the port name has changed, then set the Param changes flag
369 	 * to unreg the login
370 	 */
371 	if (vport->fc_portname.u.wwn[0] != 0 &&
372 		memcmp(&vport->fc_portname, &vport->fc_sparam.portName,
373 			sizeof(struct lpfc_name)))
374 		vport->vport_flag |= FAWWPN_PARAM_CHG;
375 
376 	if (vport->fc_portname.u.wwn[0] == 0 ||
377 	    vport->phba->cfg_soft_wwpn ||
378 	    (vvvl == 1 && cpu_to_be32(*fawwpn_key) == FAPWWN_KEY_VENDOR) ||
379 	    vport->vport_flag & FAWWPN_SET) {
380 		memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
381 			sizeof(struct lpfc_name));
382 		vport->vport_flag &= ~FAWWPN_SET;
383 		if (vvvl == 1 && cpu_to_be32(*fawwpn_key) == FAPWWN_KEY_VENDOR)
384 			vport->vport_flag |= FAWWPN_SET;
385 	}
386 	else
387 		memcpy(&vport->fc_sparam.portName, &vport->fc_portname,
388 			sizeof(struct lpfc_name));
389 }
390 
391 /**
392  * lpfc_config_port_post - Perform lpfc initialization after config port
393  * @phba: pointer to lpfc hba data structure.
394  *
395  * This routine will do LPFC initialization after the CONFIG_PORT mailbox
396  * command call. It performs all internal resource and state setups on the
397  * port: post IOCB buffers, enable appropriate host interrupt attentions,
398  * ELS ring timers, etc.
399  *
400  * Return codes
401  *   0 - success.
402  *   Any other value - error.
403  **/
404 int
lpfc_config_port_post(struct lpfc_hba * phba)405 lpfc_config_port_post(struct lpfc_hba *phba)
406 {
407 	struct lpfc_vport *vport = phba->pport;
408 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
409 	LPFC_MBOXQ_t *pmb;
410 	MAILBOX_t *mb;
411 	struct lpfc_dmabuf *mp;
412 	struct lpfc_sli *psli = &phba->sli;
413 	uint32_t status, timeout;
414 	int i, j;
415 	int rc;
416 
417 	spin_lock_irq(&phba->hbalock);
418 	/*
419 	 * If the Config port completed correctly the HBA is not
420 	 * over heated any more.
421 	 */
422 	if (phba->over_temp_state == HBA_OVER_TEMP)
423 		phba->over_temp_state = HBA_NORMAL_TEMP;
424 	spin_unlock_irq(&phba->hbalock);
425 
426 	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
427 	if (!pmb) {
428 		phba->link_state = LPFC_HBA_ERROR;
429 		return -ENOMEM;
430 	}
431 	mb = &pmb->u.mb;
432 
433 	/* Get login parameters for NID.  */
434 	rc = lpfc_read_sparam(phba, pmb, 0);
435 	if (rc) {
436 		mempool_free(pmb, phba->mbox_mem_pool);
437 		return -ENOMEM;
438 	}
439 
440 	pmb->vport = vport;
441 	if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
442 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
443 				"0448 Adapter failed init, mbxCmd x%x "
444 				"READ_SPARM mbxStatus x%x\n",
445 				mb->mbxCommand, mb->mbxStatus);
446 		phba->link_state = LPFC_HBA_ERROR;
447 		mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
448 		mempool_free(pmb, phba->mbox_mem_pool);
449 		lpfc_mbuf_free(phba, mp->virt, mp->phys);
450 		kfree(mp);
451 		return -EIO;
452 	}
453 
454 	mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
455 
456 	memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
457 	lpfc_mbuf_free(phba, mp->virt, mp->phys);
458 	kfree(mp);
459 	pmb->ctx_buf = NULL;
460 	lpfc_update_vport_wwn(vport);
461 
462 	/* Update the fc_host data structures with new wwn. */
463 	fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
464 	fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
465 	fc_host_max_npiv_vports(shost) = phba->max_vpi;
466 
467 	/* If no serial number in VPD data, use low 6 bytes of WWNN */
468 	/* This should be consolidated into parse_vpd ? - mr */
469 	if (phba->SerialNumber[0] == 0) {
470 		uint8_t *outptr;
471 
472 		outptr = &vport->fc_nodename.u.s.IEEE[0];
473 		for (i = 0; i < 12; i++) {
474 			status = *outptr++;
475 			j = ((status & 0xf0) >> 4);
476 			if (j <= 9)
477 				phba->SerialNumber[i] =
478 				    (char)((uint8_t) 0x30 + (uint8_t) j);
479 			else
480 				phba->SerialNumber[i] =
481 				    (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
482 			i++;
483 			j = (status & 0xf);
484 			if (j <= 9)
485 				phba->SerialNumber[i] =
486 				    (char)((uint8_t) 0x30 + (uint8_t) j);
487 			else
488 				phba->SerialNumber[i] =
489 				    (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
490 		}
491 	}
492 
493 	lpfc_read_config(phba, pmb);
494 	pmb->vport = vport;
495 	if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
496 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
497 				"0453 Adapter failed to init, mbxCmd x%x "
498 				"READ_CONFIG, mbxStatus x%x\n",
499 				mb->mbxCommand, mb->mbxStatus);
500 		phba->link_state = LPFC_HBA_ERROR;
501 		mempool_free( pmb, phba->mbox_mem_pool);
502 		return -EIO;
503 	}
504 
505 	/* Check if the port is disabled */
506 	lpfc_sli_read_link_ste(phba);
507 
508 	/* Reset the DFT_HBA_Q_DEPTH to the max xri  */
509 	i = (mb->un.varRdConfig.max_xri + 1);
510 	if (phba->cfg_hba_queue_depth > i) {
511 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
512 				"3359 HBA queue depth changed from %d to %d\n",
513 				phba->cfg_hba_queue_depth, i);
514 		phba->cfg_hba_queue_depth = i;
515 	}
516 
517 	/* Reset the DFT_LUN_Q_DEPTH to (max xri >> 3)  */
518 	i = (mb->un.varRdConfig.max_xri >> 3);
519 	if (phba->pport->cfg_lun_queue_depth > i) {
520 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
521 				"3360 LUN queue depth changed from %d to %d\n",
522 				phba->pport->cfg_lun_queue_depth, i);
523 		phba->pport->cfg_lun_queue_depth = i;
524 	}
525 
526 	phba->lmt = mb->un.varRdConfig.lmt;
527 
528 	/* Get the default values for Model Name and Description */
529 	lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
530 
531 	phba->link_state = LPFC_LINK_DOWN;
532 
533 	/* Only process IOCBs on ELS ring till hba_state is READY */
534 	if (psli->sli3_ring[LPFC_EXTRA_RING].sli.sli3.cmdringaddr)
535 		psli->sli3_ring[LPFC_EXTRA_RING].flag |= LPFC_STOP_IOCB_EVENT;
536 	if (psli->sli3_ring[LPFC_FCP_RING].sli.sli3.cmdringaddr)
537 		psli->sli3_ring[LPFC_FCP_RING].flag |= LPFC_STOP_IOCB_EVENT;
538 
539 	/* Post receive buffers for desired rings */
540 	if (phba->sli_rev != 3)
541 		lpfc_post_rcv_buf(phba);
542 
543 	/*
544 	 * Configure HBA MSI-X attention conditions to messages if MSI-X mode
545 	 */
546 	if (phba->intr_type == MSIX) {
547 		rc = lpfc_config_msi(phba, pmb);
548 		if (rc) {
549 			mempool_free(pmb, phba->mbox_mem_pool);
550 			return -EIO;
551 		}
552 		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
553 		if (rc != MBX_SUCCESS) {
554 			lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
555 					"0352 Config MSI mailbox command "
556 					"failed, mbxCmd x%x, mbxStatus x%x\n",
557 					pmb->u.mb.mbxCommand,
558 					pmb->u.mb.mbxStatus);
559 			mempool_free(pmb, phba->mbox_mem_pool);
560 			return -EIO;
561 		}
562 	}
563 
564 	spin_lock_irq(&phba->hbalock);
565 	/* Initialize ERATT handling flag */
566 	phba->hba_flag &= ~HBA_ERATT_HANDLED;
567 
568 	/* Enable appropriate host interrupts */
569 	if (lpfc_readl(phba->HCregaddr, &status)) {
570 		spin_unlock_irq(&phba->hbalock);
571 		return -EIO;
572 	}
573 	status |= HC_MBINT_ENA | HC_ERINT_ENA | HC_LAINT_ENA;
574 	if (psli->num_rings > 0)
575 		status |= HC_R0INT_ENA;
576 	if (psli->num_rings > 1)
577 		status |= HC_R1INT_ENA;
578 	if (psli->num_rings > 2)
579 		status |= HC_R2INT_ENA;
580 	if (psli->num_rings > 3)
581 		status |= HC_R3INT_ENA;
582 
583 	if ((phba->cfg_poll & ENABLE_FCP_RING_POLLING) &&
584 	    (phba->cfg_poll & DISABLE_FCP_RING_INT))
585 		status &= ~(HC_R0INT_ENA);
586 
587 	writel(status, phba->HCregaddr);
588 	readl(phba->HCregaddr); /* flush */
589 	spin_unlock_irq(&phba->hbalock);
590 
591 	/* Set up ring-0 (ELS) timer */
592 	timeout = phba->fc_ratov * 2;
593 	mod_timer(&vport->els_tmofunc,
594 		  jiffies + msecs_to_jiffies(1000 * timeout));
595 	/* Set up heart beat (HB) timer */
596 	mod_timer(&phba->hb_tmofunc,
597 		  jiffies + msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
598 	phba->hb_outstanding = 0;
599 	phba->last_completion_time = jiffies;
600 	/* Set up error attention (ERATT) polling timer */
601 	mod_timer(&phba->eratt_poll,
602 		  jiffies + msecs_to_jiffies(1000 * phba->eratt_poll_interval));
603 
604 	if (phba->hba_flag & LINK_DISABLED) {
605 		lpfc_printf_log(phba,
606 			KERN_ERR, LOG_INIT,
607 			"2598 Adapter Link is disabled.\n");
608 		lpfc_down_link(phba, pmb);
609 		pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
610 		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
611 		if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
612 			lpfc_printf_log(phba,
613 			KERN_ERR, LOG_INIT,
614 			"2599 Adapter failed to issue DOWN_LINK"
615 			" mbox command rc 0x%x\n", rc);
616 
617 			mempool_free(pmb, phba->mbox_mem_pool);
618 			return -EIO;
619 		}
620 	} else if (phba->cfg_suppress_link_up == LPFC_INITIALIZE_LINK) {
621 		mempool_free(pmb, phba->mbox_mem_pool);
622 		rc = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);
623 		if (rc)
624 			return rc;
625 	}
626 	/* MBOX buffer will be freed in mbox compl */
627 	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
628 	if (!pmb) {
629 		phba->link_state = LPFC_HBA_ERROR;
630 		return -ENOMEM;
631 	}
632 
633 	lpfc_config_async(phba, pmb, LPFC_ELS_RING);
634 	pmb->mbox_cmpl = lpfc_config_async_cmpl;
635 	pmb->vport = phba->pport;
636 	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
637 
638 	if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
639 		lpfc_printf_log(phba,
640 				KERN_ERR,
641 				LOG_INIT,
642 				"0456 Adapter failed to issue "
643 				"ASYNCEVT_ENABLE mbox status x%x\n",
644 				rc);
645 		mempool_free(pmb, phba->mbox_mem_pool);
646 	}
647 
648 	/* Get Option rom version */
649 	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
650 	if (!pmb) {
651 		phba->link_state = LPFC_HBA_ERROR;
652 		return -ENOMEM;
653 	}
654 
655 	lpfc_dump_wakeup_param(phba, pmb);
656 	pmb->mbox_cmpl = lpfc_dump_wakeup_param_cmpl;
657 	pmb->vport = phba->pport;
658 	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
659 
660 	if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
661 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0435 Adapter failed "
662 				"to get Option ROM version status x%x\n", rc);
663 		mempool_free(pmb, phba->mbox_mem_pool);
664 	}
665 
666 	return 0;
667 }
668 
669 /**
670  * lpfc_hba_init_link - Initialize the FC link
671  * @phba: pointer to lpfc hba data structure.
672  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
673  *
674  * This routine will issue the INIT_LINK mailbox command call.
675  * It is available to other drivers through the lpfc_hba data
676  * structure for use as a delayed link up mechanism with the
677  * module parameter lpfc_suppress_link_up.
678  *
679  * Return code
680  *		0 - success
681  *		Any other value - error
682  **/
683 static int
lpfc_hba_init_link(struct lpfc_hba * phba,uint32_t flag)684 lpfc_hba_init_link(struct lpfc_hba *phba, uint32_t flag)
685 {
686 	return lpfc_hba_init_link_fc_topology(phba, phba->cfg_topology, flag);
687 }
688 
689 /**
690  * lpfc_hba_init_link_fc_topology - Initialize FC link with desired topology
691  * @phba: pointer to lpfc hba data structure.
692  * @fc_topology: desired fc topology.
693  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
694  *
695  * This routine will issue the INIT_LINK mailbox command call.
696  * It is available to other drivers through the lpfc_hba data
697  * structure for use as a delayed link up mechanism with the
698  * module parameter lpfc_suppress_link_up.
699  *
700  * Return code
701  *              0 - success
702  *              Any other value - error
703  **/
704 int
lpfc_hba_init_link_fc_topology(struct lpfc_hba * phba,uint32_t fc_topology,uint32_t flag)705 lpfc_hba_init_link_fc_topology(struct lpfc_hba *phba, uint32_t fc_topology,
706 			       uint32_t flag)
707 {
708 	struct lpfc_vport *vport = phba->pport;
709 	LPFC_MBOXQ_t *pmb;
710 	MAILBOX_t *mb;
711 	int rc;
712 
713 	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
714 	if (!pmb) {
715 		phba->link_state = LPFC_HBA_ERROR;
716 		return -ENOMEM;
717 	}
718 	mb = &pmb->u.mb;
719 	pmb->vport = vport;
720 
721 	if ((phba->cfg_link_speed > LPFC_USER_LINK_SPEED_MAX) ||
722 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_1G) &&
723 	     !(phba->lmt & LMT_1Gb)) ||
724 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_2G) &&
725 	     !(phba->lmt & LMT_2Gb)) ||
726 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_4G) &&
727 	     !(phba->lmt & LMT_4Gb)) ||
728 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_8G) &&
729 	     !(phba->lmt & LMT_8Gb)) ||
730 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_10G) &&
731 	     !(phba->lmt & LMT_10Gb)) ||
732 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_16G) &&
733 	     !(phba->lmt & LMT_16Gb)) ||
734 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_32G) &&
735 	     !(phba->lmt & LMT_32Gb)) ||
736 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_64G) &&
737 	     !(phba->lmt & LMT_64Gb))) {
738 		/* Reset link speed to auto */
739 		lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
740 			"1302 Invalid speed for this board:%d "
741 			"Reset link speed to auto.\n",
742 			phba->cfg_link_speed);
743 			phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO;
744 	}
745 	lpfc_init_link(phba, pmb, fc_topology, phba->cfg_link_speed);
746 	pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
747 	if (phba->sli_rev < LPFC_SLI_REV4)
748 		lpfc_set_loopback_flag(phba);
749 	rc = lpfc_sli_issue_mbox(phba, pmb, flag);
750 	if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
751 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
752 			"0498 Adapter failed to init, mbxCmd x%x "
753 			"INIT_LINK, mbxStatus x%x\n",
754 			mb->mbxCommand, mb->mbxStatus);
755 		if (phba->sli_rev <= LPFC_SLI_REV3) {
756 			/* Clear all interrupt enable conditions */
757 			writel(0, phba->HCregaddr);
758 			readl(phba->HCregaddr); /* flush */
759 			/* Clear all pending interrupts */
760 			writel(0xffffffff, phba->HAregaddr);
761 			readl(phba->HAregaddr); /* flush */
762 		}
763 		phba->link_state = LPFC_HBA_ERROR;
764 		if (rc != MBX_BUSY || flag == MBX_POLL)
765 			mempool_free(pmb, phba->mbox_mem_pool);
766 		return -EIO;
767 	}
768 	phba->cfg_suppress_link_up = LPFC_INITIALIZE_LINK;
769 	if (flag == MBX_POLL)
770 		mempool_free(pmb, phba->mbox_mem_pool);
771 
772 	return 0;
773 }
774 
775 /**
776  * lpfc_hba_down_link - this routine downs the FC link
777  * @phba: pointer to lpfc hba data structure.
778  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
779  *
780  * This routine will issue the DOWN_LINK mailbox command call.
781  * It is available to other drivers through the lpfc_hba data
782  * structure for use to stop the link.
783  *
784  * Return code
785  *		0 - success
786  *		Any other value - error
787  **/
788 static int
lpfc_hba_down_link(struct lpfc_hba * phba,uint32_t flag)789 lpfc_hba_down_link(struct lpfc_hba *phba, uint32_t flag)
790 {
791 	LPFC_MBOXQ_t *pmb;
792 	int rc;
793 
794 	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
795 	if (!pmb) {
796 		phba->link_state = LPFC_HBA_ERROR;
797 		return -ENOMEM;
798 	}
799 
800 	lpfc_printf_log(phba,
801 		KERN_ERR, LOG_INIT,
802 		"0491 Adapter Link is disabled.\n");
803 	lpfc_down_link(phba, pmb);
804 	pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
805 	rc = lpfc_sli_issue_mbox(phba, pmb, flag);
806 	if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
807 		lpfc_printf_log(phba,
808 		KERN_ERR, LOG_INIT,
809 		"2522 Adapter failed to issue DOWN_LINK"
810 		" mbox command rc 0x%x\n", rc);
811 
812 		mempool_free(pmb, phba->mbox_mem_pool);
813 		return -EIO;
814 	}
815 	if (flag == MBX_POLL)
816 		mempool_free(pmb, phba->mbox_mem_pool);
817 
818 	return 0;
819 }
820 
821 /**
822  * lpfc_hba_down_prep - Perform lpfc uninitialization prior to HBA reset
823  * @phba: pointer to lpfc HBA data structure.
824  *
825  * This routine will do LPFC uninitialization before the HBA is reset when
826  * bringing down the SLI Layer.
827  *
828  * Return codes
829  *   0 - success.
830  *   Any other value - error.
831  **/
832 int
lpfc_hba_down_prep(struct lpfc_hba * phba)833 lpfc_hba_down_prep(struct lpfc_hba *phba)
834 {
835 	struct lpfc_vport **vports;
836 	int i;
837 
838 	if (phba->sli_rev <= LPFC_SLI_REV3) {
839 		/* Disable interrupts */
840 		writel(0, phba->HCregaddr);
841 		readl(phba->HCregaddr); /* flush */
842 	}
843 
844 	if (phba->pport->load_flag & FC_UNLOADING)
845 		lpfc_cleanup_discovery_resources(phba->pport);
846 	else {
847 		vports = lpfc_create_vport_work_array(phba);
848 		if (vports != NULL)
849 			for (i = 0; i <= phba->max_vports &&
850 				vports[i] != NULL; i++)
851 				lpfc_cleanup_discovery_resources(vports[i]);
852 		lpfc_destroy_vport_work_array(phba, vports);
853 	}
854 	return 0;
855 }
856 
857 /**
858  * lpfc_sli4_free_sp_events - Cleanup sp_queue_events to free
859  * rspiocb which got deferred
860  *
861  * @phba: pointer to lpfc HBA data structure.
862  *
863  * This routine will cleanup completed slow path events after HBA is reset
864  * when bringing down the SLI Layer.
865  *
866  *
867  * Return codes
868  *   void.
869  **/
870 static void
lpfc_sli4_free_sp_events(struct lpfc_hba * phba)871 lpfc_sli4_free_sp_events(struct lpfc_hba *phba)
872 {
873 	struct lpfc_iocbq *rspiocbq;
874 	struct hbq_dmabuf *dmabuf;
875 	struct lpfc_cq_event *cq_event;
876 
877 	spin_lock_irq(&phba->hbalock);
878 	phba->hba_flag &= ~HBA_SP_QUEUE_EVT;
879 	spin_unlock_irq(&phba->hbalock);
880 
881 	while (!list_empty(&phba->sli4_hba.sp_queue_event)) {
882 		/* Get the response iocb from the head of work queue */
883 		spin_lock_irq(&phba->hbalock);
884 		list_remove_head(&phba->sli4_hba.sp_queue_event,
885 				 cq_event, struct lpfc_cq_event, list);
886 		spin_unlock_irq(&phba->hbalock);
887 
888 		switch (bf_get(lpfc_wcqe_c_code, &cq_event->cqe.wcqe_cmpl)) {
889 		case CQE_CODE_COMPL_WQE:
890 			rspiocbq = container_of(cq_event, struct lpfc_iocbq,
891 						 cq_event);
892 			lpfc_sli_release_iocbq(phba, rspiocbq);
893 			break;
894 		case CQE_CODE_RECEIVE:
895 		case CQE_CODE_RECEIVE_V1:
896 			dmabuf = container_of(cq_event, struct hbq_dmabuf,
897 					      cq_event);
898 			lpfc_in_buf_free(phba, &dmabuf->dbuf);
899 		}
900 	}
901 }
902 
903 /**
904  * lpfc_hba_free_post_buf - Perform lpfc uninitialization after HBA reset
905  * @phba: pointer to lpfc HBA data structure.
906  *
907  * This routine will cleanup posted ELS buffers after the HBA is reset
908  * when bringing down the SLI Layer.
909  *
910  *
911  * Return codes
912  *   void.
913  **/
914 static void
lpfc_hba_free_post_buf(struct lpfc_hba * phba)915 lpfc_hba_free_post_buf(struct lpfc_hba *phba)
916 {
917 	struct lpfc_sli *psli = &phba->sli;
918 	struct lpfc_sli_ring *pring;
919 	struct lpfc_dmabuf *mp, *next_mp;
920 	LIST_HEAD(buflist);
921 	int count;
922 
923 	if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
924 		lpfc_sli_hbqbuf_free_all(phba);
925 	else {
926 		/* Cleanup preposted buffers on the ELS ring */
927 		pring = &psli->sli3_ring[LPFC_ELS_RING];
928 		spin_lock_irq(&phba->hbalock);
929 		list_splice_init(&pring->postbufq, &buflist);
930 		spin_unlock_irq(&phba->hbalock);
931 
932 		count = 0;
933 		list_for_each_entry_safe(mp, next_mp, &buflist, list) {
934 			list_del(&mp->list);
935 			count++;
936 			lpfc_mbuf_free(phba, mp->virt, mp->phys);
937 			kfree(mp);
938 		}
939 
940 		spin_lock_irq(&phba->hbalock);
941 		pring->postbufq_cnt -= count;
942 		spin_unlock_irq(&phba->hbalock);
943 	}
944 }
945 
946 /**
947  * lpfc_hba_clean_txcmplq - Perform lpfc uninitialization after HBA reset
948  * @phba: pointer to lpfc HBA data structure.
949  *
950  * This routine will cleanup the txcmplq after the HBA is reset when bringing
951  * down the SLI Layer.
952  *
953  * Return codes
954  *   void
955  **/
956 static void
lpfc_hba_clean_txcmplq(struct lpfc_hba * phba)957 lpfc_hba_clean_txcmplq(struct lpfc_hba *phba)
958 {
959 	struct lpfc_sli *psli = &phba->sli;
960 	struct lpfc_queue *qp = NULL;
961 	struct lpfc_sli_ring *pring;
962 	LIST_HEAD(completions);
963 	int i;
964 	struct lpfc_iocbq *piocb, *next_iocb;
965 
966 	if (phba->sli_rev != LPFC_SLI_REV4) {
967 		for (i = 0; i < psli->num_rings; i++) {
968 			pring = &psli->sli3_ring[i];
969 			spin_lock_irq(&phba->hbalock);
970 			/* At this point in time the HBA is either reset or DOA
971 			 * Nothing should be on txcmplq as it will
972 			 * NEVER complete.
973 			 */
974 			list_splice_init(&pring->txcmplq, &completions);
975 			pring->txcmplq_cnt = 0;
976 			spin_unlock_irq(&phba->hbalock);
977 
978 			lpfc_sli_abort_iocb_ring(phba, pring);
979 		}
980 		/* Cancel all the IOCBs from the completions list */
981 		lpfc_sli_cancel_iocbs(phba, &completions,
982 				      IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
983 		return;
984 	}
985 	list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
986 		pring = qp->pring;
987 		if (!pring)
988 			continue;
989 		spin_lock_irq(&pring->ring_lock);
990 		list_for_each_entry_safe(piocb, next_iocb,
991 					 &pring->txcmplq, list)
992 			piocb->iocb_flag &= ~LPFC_IO_ON_TXCMPLQ;
993 		list_splice_init(&pring->txcmplq, &completions);
994 		pring->txcmplq_cnt = 0;
995 		spin_unlock_irq(&pring->ring_lock);
996 		lpfc_sli_abort_iocb_ring(phba, pring);
997 	}
998 	/* Cancel all the IOCBs from the completions list */
999 	lpfc_sli_cancel_iocbs(phba, &completions,
1000 			      IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
1001 }
1002 
1003 /**
1004  * lpfc_hba_down_post_s3 - Perform lpfc uninitialization after HBA reset
1005 	int i;
1006  * @phba: pointer to lpfc HBA data structure.
1007  *
1008  * This routine will do uninitialization after the HBA is reset when bring
1009  * down the SLI Layer.
1010  *
1011  * Return codes
1012  *   0 - success.
1013  *   Any other value - error.
1014  **/
1015 static int
lpfc_hba_down_post_s3(struct lpfc_hba * phba)1016 lpfc_hba_down_post_s3(struct lpfc_hba *phba)
1017 {
1018 	lpfc_hba_free_post_buf(phba);
1019 	lpfc_hba_clean_txcmplq(phba);
1020 	return 0;
1021 }
1022 
1023 /**
1024  * lpfc_hba_down_post_s4 - Perform lpfc uninitialization after HBA reset
1025  * @phba: pointer to lpfc HBA data structure.
1026  *
1027  * This routine will do uninitialization after the HBA is reset when bring
1028  * down the SLI Layer.
1029  *
1030  * Return codes
1031  *   0 - success.
1032  *   Any other value - error.
1033  **/
1034 static int
lpfc_hba_down_post_s4(struct lpfc_hba * phba)1035 lpfc_hba_down_post_s4(struct lpfc_hba *phba)
1036 {
1037 	struct lpfc_io_buf *psb, *psb_next;
1038 	struct lpfc_nvmet_rcv_ctx *ctxp, *ctxp_next;
1039 	struct lpfc_sli4_hdw_queue *qp;
1040 	LIST_HEAD(aborts);
1041 	LIST_HEAD(nvme_aborts);
1042 	LIST_HEAD(nvmet_aborts);
1043 	struct lpfc_sglq *sglq_entry = NULL;
1044 	int cnt, idx;
1045 
1046 
1047 	lpfc_sli_hbqbuf_free_all(phba);
1048 	lpfc_hba_clean_txcmplq(phba);
1049 
1050 	/* At this point in time the HBA is either reset or DOA. Either
1051 	 * way, nothing should be on lpfc_abts_els_sgl_list, it needs to be
1052 	 * on the lpfc_els_sgl_list so that it can either be freed if the
1053 	 * driver is unloading or reposted if the driver is restarting
1054 	 * the port.
1055 	 */
1056 	spin_lock_irq(&phba->hbalock);  /* required for lpfc_els_sgl_list and */
1057 					/* scsl_buf_list */
1058 	/* sgl_list_lock required because worker thread uses this
1059 	 * list.
1060 	 */
1061 	spin_lock(&phba->sli4_hba.sgl_list_lock);
1062 	list_for_each_entry(sglq_entry,
1063 		&phba->sli4_hba.lpfc_abts_els_sgl_list, list)
1064 		sglq_entry->state = SGL_FREED;
1065 
1066 	list_splice_init(&phba->sli4_hba.lpfc_abts_els_sgl_list,
1067 			&phba->sli4_hba.lpfc_els_sgl_list);
1068 
1069 
1070 	spin_unlock(&phba->sli4_hba.sgl_list_lock);
1071 
1072 	/* abts_xxxx_buf_list_lock required because worker thread uses this
1073 	 * list.
1074 	 */
1075 	cnt = 0;
1076 	for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
1077 		qp = &phba->sli4_hba.hdwq[idx];
1078 
1079 		spin_lock(&qp->abts_io_buf_list_lock);
1080 		list_splice_init(&qp->lpfc_abts_io_buf_list,
1081 				 &aborts);
1082 
1083 		list_for_each_entry_safe(psb, psb_next, &aborts, list) {
1084 			psb->pCmd = NULL;
1085 			psb->status = IOSTAT_SUCCESS;
1086 			cnt++;
1087 		}
1088 		spin_lock(&qp->io_buf_list_put_lock);
1089 		list_splice_init(&aborts, &qp->lpfc_io_buf_list_put);
1090 		qp->put_io_bufs += qp->abts_scsi_io_bufs;
1091 		qp->put_io_bufs += qp->abts_nvme_io_bufs;
1092 		qp->abts_scsi_io_bufs = 0;
1093 		qp->abts_nvme_io_bufs = 0;
1094 		spin_unlock(&qp->io_buf_list_put_lock);
1095 		spin_unlock(&qp->abts_io_buf_list_lock);
1096 	}
1097 	spin_unlock_irq(&phba->hbalock);
1098 
1099 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
1100 		spin_lock_irq(&phba->sli4_hba.abts_nvmet_buf_list_lock);
1101 		list_splice_init(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
1102 				 &nvmet_aborts);
1103 		spin_unlock_irq(&phba->sli4_hba.abts_nvmet_buf_list_lock);
1104 		list_for_each_entry_safe(ctxp, ctxp_next, &nvmet_aborts, list) {
1105 			ctxp->flag &= ~(LPFC_NVMET_XBUSY | LPFC_NVMET_ABORT_OP);
1106 			lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
1107 		}
1108 	}
1109 
1110 	lpfc_sli4_free_sp_events(phba);
1111 	return cnt;
1112 }
1113 
1114 /**
1115  * lpfc_hba_down_post - Wrapper func for hba down post routine
1116  * @phba: pointer to lpfc HBA data structure.
1117  *
1118  * This routine wraps the actual SLI3 or SLI4 routine for performing
1119  * uninitialization after the HBA is reset when bring down the SLI Layer.
1120  *
1121  * Return codes
1122  *   0 - success.
1123  *   Any other value - error.
1124  **/
1125 int
lpfc_hba_down_post(struct lpfc_hba * phba)1126 lpfc_hba_down_post(struct lpfc_hba *phba)
1127 {
1128 	return (*phba->lpfc_hba_down_post)(phba);
1129 }
1130 
1131 /**
1132  * lpfc_hb_timeout - The HBA-timer timeout handler
1133  * @ptr: unsigned long holds the pointer to lpfc hba data structure.
1134  *
1135  * This is the HBA-timer timeout handler registered to the lpfc driver. When
1136  * this timer fires, a HBA timeout event shall be posted to the lpfc driver
1137  * work-port-events bitmap and the worker thread is notified. This timeout
1138  * event will be used by the worker thread to invoke the actual timeout
1139  * handler routine, lpfc_hb_timeout_handler. Any periodical operations will
1140  * be performed in the timeout handler and the HBA timeout event bit shall
1141  * be cleared by the worker thread after it has taken the event bitmap out.
1142  **/
1143 static void
lpfc_hb_timeout(struct timer_list * t)1144 lpfc_hb_timeout(struct timer_list *t)
1145 {
1146 	struct lpfc_hba *phba;
1147 	uint32_t tmo_posted;
1148 	unsigned long iflag;
1149 
1150 	phba = from_timer(phba, t, hb_tmofunc);
1151 
1152 	/* Check for heart beat timeout conditions */
1153 	spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
1154 	tmo_posted = phba->pport->work_port_events & WORKER_HB_TMO;
1155 	if (!tmo_posted)
1156 		phba->pport->work_port_events |= WORKER_HB_TMO;
1157 	spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
1158 
1159 	/* Tell the worker thread there is work to do */
1160 	if (!tmo_posted)
1161 		lpfc_worker_wake_up(phba);
1162 	return;
1163 }
1164 
1165 /**
1166  * lpfc_rrq_timeout - The RRQ-timer timeout handler
1167  * @ptr: unsigned long holds the pointer to lpfc hba data structure.
1168  *
1169  * This is the RRQ-timer timeout handler registered to the lpfc driver. When
1170  * this timer fires, a RRQ timeout event shall be posted to the lpfc driver
1171  * work-port-events bitmap and the worker thread is notified. This timeout
1172  * event will be used by the worker thread to invoke the actual timeout
1173  * handler routine, lpfc_rrq_handler. Any periodical operations will
1174  * be performed in the timeout handler and the RRQ timeout event bit shall
1175  * be cleared by the worker thread after it has taken the event bitmap out.
1176  **/
1177 static void
lpfc_rrq_timeout(struct timer_list * t)1178 lpfc_rrq_timeout(struct timer_list *t)
1179 {
1180 	struct lpfc_hba *phba;
1181 	unsigned long iflag;
1182 
1183 	phba = from_timer(phba, t, rrq_tmr);
1184 	spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
1185 	if (!(phba->pport->load_flag & FC_UNLOADING))
1186 		phba->hba_flag |= HBA_RRQ_ACTIVE;
1187 	else
1188 		phba->hba_flag &= ~HBA_RRQ_ACTIVE;
1189 	spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
1190 
1191 	if (!(phba->pport->load_flag & FC_UNLOADING))
1192 		lpfc_worker_wake_up(phba);
1193 }
1194 
1195 /**
1196  * lpfc_hb_mbox_cmpl - The lpfc heart-beat mailbox command callback function
1197  * @phba: pointer to lpfc hba data structure.
1198  * @pmboxq: pointer to the driver internal queue element for mailbox command.
1199  *
1200  * This is the callback function to the lpfc heart-beat mailbox command.
1201  * If configured, the lpfc driver issues the heart-beat mailbox command to
1202  * the HBA every LPFC_HB_MBOX_INTERVAL (current 5) seconds. At the time the
1203  * heart-beat mailbox command is issued, the driver shall set up heart-beat
1204  * timeout timer to LPFC_HB_MBOX_TIMEOUT (current 30) seconds and marks
1205  * heart-beat outstanding state. Once the mailbox command comes back and
1206  * no error conditions detected, the heart-beat mailbox command timer is
1207  * reset to LPFC_HB_MBOX_INTERVAL seconds and the heart-beat outstanding
1208  * state is cleared for the next heart-beat. If the timer expired with the
1209  * heart-beat outstanding state set, the driver will put the HBA offline.
1210  **/
1211 static void
lpfc_hb_mbox_cmpl(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmboxq)1212 lpfc_hb_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
1213 {
1214 	unsigned long drvr_flag;
1215 
1216 	spin_lock_irqsave(&phba->hbalock, drvr_flag);
1217 	phba->hb_outstanding = 0;
1218 	spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
1219 
1220 	/* Check and reset heart-beat timer is necessary */
1221 	mempool_free(pmboxq, phba->mbox_mem_pool);
1222 	if (!(phba->pport->fc_flag & FC_OFFLINE_MODE) &&
1223 		!(phba->link_state == LPFC_HBA_ERROR) &&
1224 		!(phba->pport->load_flag & FC_UNLOADING))
1225 		mod_timer(&phba->hb_tmofunc,
1226 			  jiffies +
1227 			  msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
1228 	return;
1229 }
1230 
1231 static void
lpfc_hb_eq_delay_work(struct work_struct * work)1232 lpfc_hb_eq_delay_work(struct work_struct *work)
1233 {
1234 	struct lpfc_hba *phba = container_of(to_delayed_work(work),
1235 					     struct lpfc_hba, eq_delay_work);
1236 	struct lpfc_eq_intr_info *eqi, *eqi_new;
1237 	struct lpfc_queue *eq, *eq_next;
1238 	unsigned char *eqcnt = NULL;
1239 	uint32_t usdelay;
1240 	int i;
1241 	bool update = false;
1242 
1243 	if (!phba->cfg_auto_imax || phba->pport->load_flag & FC_UNLOADING)
1244 		return;
1245 
1246 	if (phba->link_state == LPFC_HBA_ERROR ||
1247 	    phba->pport->fc_flag & FC_OFFLINE_MODE)
1248 		goto requeue;
1249 
1250 	eqcnt = kcalloc(num_possible_cpus(), sizeof(unsigned char),
1251 			GFP_KERNEL);
1252 	if (!eqcnt)
1253 		goto requeue;
1254 
1255 	if (phba->cfg_irq_chann > 1) {
1256 		/* Loop thru all IRQ vectors */
1257 		for (i = 0; i < phba->cfg_irq_chann; i++) {
1258 			/* Get the EQ corresponding to the IRQ vector */
1259 			eq = phba->sli4_hba.hba_eq_hdl[i].eq;
1260 			if (!eq)
1261 				continue;
1262 			if (eq->q_mode) {
1263 				update = true;
1264 				break;
1265 			}
1266 			if (eqcnt[eq->last_cpu] < 2)
1267 				eqcnt[eq->last_cpu]++;
1268 		}
1269 	} else
1270 		update = true;
1271 
1272 	for_each_present_cpu(i) {
1273 		eqi = per_cpu_ptr(phba->sli4_hba.eq_info, i);
1274 		if (!update && eqcnt[i] < 2) {
1275 			eqi->icnt = 0;
1276 			continue;
1277 		}
1278 
1279 		usdelay = (eqi->icnt / LPFC_IMAX_THRESHOLD) *
1280 			   LPFC_EQ_DELAY_STEP;
1281 		if (usdelay > LPFC_MAX_AUTO_EQ_DELAY)
1282 			usdelay = LPFC_MAX_AUTO_EQ_DELAY;
1283 
1284 		eqi->icnt = 0;
1285 
1286 		list_for_each_entry_safe(eq, eq_next, &eqi->list, cpu_list) {
1287 			if (eq->last_cpu != i) {
1288 				eqi_new = per_cpu_ptr(phba->sli4_hba.eq_info,
1289 						      eq->last_cpu);
1290 				list_move_tail(&eq->cpu_list, &eqi_new->list);
1291 				continue;
1292 			}
1293 			if (usdelay != eq->q_mode)
1294 				lpfc_modify_hba_eq_delay(phba, eq->hdwq, 1,
1295 							 usdelay);
1296 		}
1297 	}
1298 
1299 	kfree(eqcnt);
1300 
1301 requeue:
1302 	queue_delayed_work(phba->wq, &phba->eq_delay_work,
1303 			   msecs_to_jiffies(LPFC_EQ_DELAY_MSECS));
1304 }
1305 
1306 /**
1307  * lpfc_hb_mxp_handler - Multi-XRI pools handler to adjust XRI distribution
1308  * @phba: pointer to lpfc hba data structure.
1309  *
1310  * For each heartbeat, this routine does some heuristic methods to adjust
1311  * XRI distribution. The goal is to fully utilize free XRIs.
1312  **/
lpfc_hb_mxp_handler(struct lpfc_hba * phba)1313 static void lpfc_hb_mxp_handler(struct lpfc_hba *phba)
1314 {
1315 	u32 i;
1316 	u32 hwq_count;
1317 
1318 	hwq_count = phba->cfg_hdw_queue;
1319 	for (i = 0; i < hwq_count; i++) {
1320 		/* Adjust XRIs in private pool */
1321 		lpfc_adjust_pvt_pool_count(phba, i);
1322 
1323 		/* Adjust high watermark */
1324 		lpfc_adjust_high_watermark(phba, i);
1325 
1326 #ifdef LPFC_MXP_STAT
1327 		/* Snapshot pbl, pvt and busy count */
1328 		lpfc_snapshot_mxp(phba, i);
1329 #endif
1330 	}
1331 }
1332 
1333 /**
1334  * lpfc_hb_timeout_handler - The HBA-timer timeout handler
1335  * @phba: pointer to lpfc hba data structure.
1336  *
1337  * This is the actual HBA-timer timeout handler to be invoked by the worker
1338  * thread whenever the HBA timer fired and HBA-timeout event posted. This
1339  * handler performs any periodic operations needed for the device. If such
1340  * periodic event has already been attended to either in the interrupt handler
1341  * or by processing slow-ring or fast-ring events within the HBA-timer
1342  * timeout window (LPFC_HB_MBOX_INTERVAL), this handler just simply resets
1343  * the timer for the next timeout period. If lpfc heart-beat mailbox command
1344  * is configured and there is no heart-beat mailbox command outstanding, a
1345  * heart-beat mailbox is issued and timer set properly. Otherwise, if there
1346  * has been a heart-beat mailbox command outstanding, the HBA shall be put
1347  * to offline.
1348  **/
1349 void
lpfc_hb_timeout_handler(struct lpfc_hba * phba)1350 lpfc_hb_timeout_handler(struct lpfc_hba *phba)
1351 {
1352 	struct lpfc_vport **vports;
1353 	LPFC_MBOXQ_t *pmboxq;
1354 	struct lpfc_dmabuf *buf_ptr;
1355 	int retval, i;
1356 	struct lpfc_sli *psli = &phba->sli;
1357 	LIST_HEAD(completions);
1358 
1359 	if (phba->cfg_xri_rebalancing) {
1360 		/* Multi-XRI pools handler */
1361 		lpfc_hb_mxp_handler(phba);
1362 	}
1363 
1364 	vports = lpfc_create_vport_work_array(phba);
1365 	if (vports != NULL)
1366 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1367 			lpfc_rcv_seq_check_edtov(vports[i]);
1368 			lpfc_fdmi_num_disc_check(vports[i]);
1369 		}
1370 	lpfc_destroy_vport_work_array(phba, vports);
1371 
1372 	if ((phba->link_state == LPFC_HBA_ERROR) ||
1373 		(phba->pport->load_flag & FC_UNLOADING) ||
1374 		(phba->pport->fc_flag & FC_OFFLINE_MODE))
1375 		return;
1376 
1377 	spin_lock_irq(&phba->pport->work_port_lock);
1378 
1379 	if (time_after(phba->last_completion_time +
1380 			msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL),
1381 			jiffies)) {
1382 		spin_unlock_irq(&phba->pport->work_port_lock);
1383 		if (!phba->hb_outstanding)
1384 			mod_timer(&phba->hb_tmofunc,
1385 				jiffies +
1386 				msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
1387 		else
1388 			mod_timer(&phba->hb_tmofunc,
1389 				jiffies +
1390 				msecs_to_jiffies(1000 * LPFC_HB_MBOX_TIMEOUT));
1391 		return;
1392 	}
1393 	spin_unlock_irq(&phba->pport->work_port_lock);
1394 
1395 	if (phba->elsbuf_cnt &&
1396 		(phba->elsbuf_cnt == phba->elsbuf_prev_cnt)) {
1397 		spin_lock_irq(&phba->hbalock);
1398 		list_splice_init(&phba->elsbuf, &completions);
1399 		phba->elsbuf_cnt = 0;
1400 		phba->elsbuf_prev_cnt = 0;
1401 		spin_unlock_irq(&phba->hbalock);
1402 
1403 		while (!list_empty(&completions)) {
1404 			list_remove_head(&completions, buf_ptr,
1405 				struct lpfc_dmabuf, list);
1406 			lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
1407 			kfree(buf_ptr);
1408 		}
1409 	}
1410 	phba->elsbuf_prev_cnt = phba->elsbuf_cnt;
1411 
1412 	/* If there is no heart beat outstanding, issue a heartbeat command */
1413 	if (phba->cfg_enable_hba_heartbeat) {
1414 		if (!phba->hb_outstanding) {
1415 			if ((!(psli->sli_flag & LPFC_SLI_MBOX_ACTIVE)) &&
1416 				(list_empty(&psli->mboxq))) {
1417 				pmboxq = mempool_alloc(phba->mbox_mem_pool,
1418 							GFP_KERNEL);
1419 				if (!pmboxq) {
1420 					mod_timer(&phba->hb_tmofunc,
1421 						 jiffies +
1422 						 msecs_to_jiffies(1000 *
1423 						 LPFC_HB_MBOX_INTERVAL));
1424 					return;
1425 				}
1426 
1427 				lpfc_heart_beat(phba, pmboxq);
1428 				pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl;
1429 				pmboxq->vport = phba->pport;
1430 				retval = lpfc_sli_issue_mbox(phba, pmboxq,
1431 						MBX_NOWAIT);
1432 
1433 				if (retval != MBX_BUSY &&
1434 					retval != MBX_SUCCESS) {
1435 					mempool_free(pmboxq,
1436 							phba->mbox_mem_pool);
1437 					mod_timer(&phba->hb_tmofunc,
1438 						jiffies +
1439 						msecs_to_jiffies(1000 *
1440 						LPFC_HB_MBOX_INTERVAL));
1441 					return;
1442 				}
1443 				phba->skipped_hb = 0;
1444 				phba->hb_outstanding = 1;
1445 			} else if (time_before_eq(phba->last_completion_time,
1446 					phba->skipped_hb)) {
1447 				lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
1448 					"2857 Last completion time not "
1449 					" updated in %d ms\n",
1450 					jiffies_to_msecs(jiffies
1451 						 - phba->last_completion_time));
1452 			} else
1453 				phba->skipped_hb = jiffies;
1454 
1455 			mod_timer(&phba->hb_tmofunc,
1456 				 jiffies +
1457 				 msecs_to_jiffies(1000 * LPFC_HB_MBOX_TIMEOUT));
1458 			return;
1459 		} else {
1460 			/*
1461 			* If heart beat timeout called with hb_outstanding set
1462 			* we need to give the hb mailbox cmd a chance to
1463 			* complete or TMO.
1464 			*/
1465 			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
1466 					"0459 Adapter heartbeat still out"
1467 					"standing:last compl time was %d ms.\n",
1468 					jiffies_to_msecs(jiffies
1469 						 - phba->last_completion_time));
1470 			mod_timer(&phba->hb_tmofunc,
1471 				jiffies +
1472 				msecs_to_jiffies(1000 * LPFC_HB_MBOX_TIMEOUT));
1473 		}
1474 	} else {
1475 			mod_timer(&phba->hb_tmofunc,
1476 				jiffies +
1477 				msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
1478 	}
1479 }
1480 
1481 /**
1482  * lpfc_offline_eratt - Bring lpfc offline on hardware error attention
1483  * @phba: pointer to lpfc hba data structure.
1484  *
1485  * This routine is called to bring the HBA offline when HBA hardware error
1486  * other than Port Error 6 has been detected.
1487  **/
1488 static void
lpfc_offline_eratt(struct lpfc_hba * phba)1489 lpfc_offline_eratt(struct lpfc_hba *phba)
1490 {
1491 	struct lpfc_sli   *psli = &phba->sli;
1492 
1493 	spin_lock_irq(&phba->hbalock);
1494 	psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1495 	spin_unlock_irq(&phba->hbalock);
1496 	lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1497 
1498 	lpfc_offline(phba);
1499 	lpfc_reset_barrier(phba);
1500 	spin_lock_irq(&phba->hbalock);
1501 	lpfc_sli_brdreset(phba);
1502 	spin_unlock_irq(&phba->hbalock);
1503 	lpfc_hba_down_post(phba);
1504 	lpfc_sli_brdready(phba, HS_MBRDY);
1505 	lpfc_unblock_mgmt_io(phba);
1506 	phba->link_state = LPFC_HBA_ERROR;
1507 	return;
1508 }
1509 
1510 /**
1511  * lpfc_sli4_offline_eratt - Bring lpfc offline on SLI4 hardware error attention
1512  * @phba: pointer to lpfc hba data structure.
1513  *
1514  * This routine is called to bring a SLI4 HBA offline when HBA hardware error
1515  * other than Port Error 6 has been detected.
1516  **/
1517 void
lpfc_sli4_offline_eratt(struct lpfc_hba * phba)1518 lpfc_sli4_offline_eratt(struct lpfc_hba *phba)
1519 {
1520 	spin_lock_irq(&phba->hbalock);
1521 	phba->link_state = LPFC_HBA_ERROR;
1522 	spin_unlock_irq(&phba->hbalock);
1523 
1524 	lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1525 	lpfc_sli_flush_io_rings(phba);
1526 	lpfc_offline(phba);
1527 	lpfc_hba_down_post(phba);
1528 	lpfc_unblock_mgmt_io(phba);
1529 }
1530 
1531 /**
1532  * lpfc_handle_deferred_eratt - The HBA hardware deferred error handler
1533  * @phba: pointer to lpfc hba data structure.
1534  *
1535  * This routine is invoked to handle the deferred HBA hardware error
1536  * conditions. This type of error is indicated by HBA by setting ER1
1537  * and another ER bit in the host status register. The driver will
1538  * wait until the ER1 bit clears before handling the error condition.
1539  **/
1540 static void
lpfc_handle_deferred_eratt(struct lpfc_hba * phba)1541 lpfc_handle_deferred_eratt(struct lpfc_hba *phba)
1542 {
1543 	uint32_t old_host_status = phba->work_hs;
1544 	struct lpfc_sli *psli = &phba->sli;
1545 
1546 	/* If the pci channel is offline, ignore possible errors,
1547 	 * since we cannot communicate with the pci card anyway.
1548 	 */
1549 	if (pci_channel_offline(phba->pcidev)) {
1550 		spin_lock_irq(&phba->hbalock);
1551 		phba->hba_flag &= ~DEFER_ERATT;
1552 		spin_unlock_irq(&phba->hbalock);
1553 		return;
1554 	}
1555 
1556 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1557 		"0479 Deferred Adapter Hardware Error "
1558 		"Data: x%x x%x x%x\n",
1559 		phba->work_hs,
1560 		phba->work_status[0], phba->work_status[1]);
1561 
1562 	spin_lock_irq(&phba->hbalock);
1563 	psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1564 	spin_unlock_irq(&phba->hbalock);
1565 
1566 
1567 	/*
1568 	 * Firmware stops when it triggred erratt. That could cause the I/Os
1569 	 * dropped by the firmware. Error iocb (I/O) on txcmplq and let the
1570 	 * SCSI layer retry it after re-establishing link.
1571 	 */
1572 	lpfc_sli_abort_fcp_rings(phba);
1573 
1574 	/*
1575 	 * There was a firmware error. Take the hba offline and then
1576 	 * attempt to restart it.
1577 	 */
1578 	lpfc_offline_prep(phba, LPFC_MBX_WAIT);
1579 	lpfc_offline(phba);
1580 
1581 	/* Wait for the ER1 bit to clear.*/
1582 	while (phba->work_hs & HS_FFER1) {
1583 		msleep(100);
1584 		if (lpfc_readl(phba->HSregaddr, &phba->work_hs)) {
1585 			phba->work_hs = UNPLUG_ERR ;
1586 			break;
1587 		}
1588 		/* If driver is unloading let the worker thread continue */
1589 		if (phba->pport->load_flag & FC_UNLOADING) {
1590 			phba->work_hs = 0;
1591 			break;
1592 		}
1593 	}
1594 
1595 	/*
1596 	 * This is to ptrotect against a race condition in which
1597 	 * first write to the host attention register clear the
1598 	 * host status register.
1599 	 */
1600 	if ((!phba->work_hs) && (!(phba->pport->load_flag & FC_UNLOADING)))
1601 		phba->work_hs = old_host_status & ~HS_FFER1;
1602 
1603 	spin_lock_irq(&phba->hbalock);
1604 	phba->hba_flag &= ~DEFER_ERATT;
1605 	spin_unlock_irq(&phba->hbalock);
1606 	phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
1607 	phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
1608 }
1609 
1610 static void
lpfc_board_errevt_to_mgmt(struct lpfc_hba * phba)1611 lpfc_board_errevt_to_mgmt(struct lpfc_hba *phba)
1612 {
1613 	struct lpfc_board_event_header board_event;
1614 	struct Scsi_Host *shost;
1615 
1616 	board_event.event_type = FC_REG_BOARD_EVENT;
1617 	board_event.subcategory = LPFC_EVENT_PORTINTERR;
1618 	shost = lpfc_shost_from_vport(phba->pport);
1619 	fc_host_post_vendor_event(shost, fc_get_event_number(),
1620 				  sizeof(board_event),
1621 				  (char *) &board_event,
1622 				  LPFC_NL_VENDOR_ID);
1623 }
1624 
1625 /**
1626  * lpfc_handle_eratt_s3 - The SLI3 HBA hardware error handler
1627  * @phba: pointer to lpfc hba data structure.
1628  *
1629  * This routine is invoked to handle the following HBA hardware error
1630  * conditions:
1631  * 1 - HBA error attention interrupt
1632  * 2 - DMA ring index out of range
1633  * 3 - Mailbox command came back as unknown
1634  **/
1635 static void
lpfc_handle_eratt_s3(struct lpfc_hba * phba)1636 lpfc_handle_eratt_s3(struct lpfc_hba *phba)
1637 {
1638 	struct lpfc_vport *vport = phba->pport;
1639 	struct lpfc_sli   *psli = &phba->sli;
1640 	uint32_t event_data;
1641 	unsigned long temperature;
1642 	struct temp_event temp_event_data;
1643 	struct Scsi_Host  *shost;
1644 
1645 	/* If the pci channel is offline, ignore possible errors,
1646 	 * since we cannot communicate with the pci card anyway.
1647 	 */
1648 	if (pci_channel_offline(phba->pcidev)) {
1649 		spin_lock_irq(&phba->hbalock);
1650 		phba->hba_flag &= ~DEFER_ERATT;
1651 		spin_unlock_irq(&phba->hbalock);
1652 		return;
1653 	}
1654 
1655 	/* If resets are disabled then leave the HBA alone and return */
1656 	if (!phba->cfg_enable_hba_reset)
1657 		return;
1658 
1659 	/* Send an internal error event to mgmt application */
1660 	lpfc_board_errevt_to_mgmt(phba);
1661 
1662 	if (phba->hba_flag & DEFER_ERATT)
1663 		lpfc_handle_deferred_eratt(phba);
1664 
1665 	if ((phba->work_hs & HS_FFER6) || (phba->work_hs & HS_FFER8)) {
1666 		if (phba->work_hs & HS_FFER6)
1667 			/* Re-establishing Link */
1668 			lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1669 					"1301 Re-establishing Link "
1670 					"Data: x%x x%x x%x\n",
1671 					phba->work_hs, phba->work_status[0],
1672 					phba->work_status[1]);
1673 		if (phba->work_hs & HS_FFER8)
1674 			/* Device Zeroization */
1675 			lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1676 					"2861 Host Authentication device "
1677 					"zeroization Data:x%x x%x x%x\n",
1678 					phba->work_hs, phba->work_status[0],
1679 					phba->work_status[1]);
1680 
1681 		spin_lock_irq(&phba->hbalock);
1682 		psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1683 		spin_unlock_irq(&phba->hbalock);
1684 
1685 		/*
1686 		* Firmware stops when it triggled erratt with HS_FFER6.
1687 		* That could cause the I/Os dropped by the firmware.
1688 		* Error iocb (I/O) on txcmplq and let the SCSI layer
1689 		* retry it after re-establishing link.
1690 		*/
1691 		lpfc_sli_abort_fcp_rings(phba);
1692 
1693 		/*
1694 		 * There was a firmware error.  Take the hba offline and then
1695 		 * attempt to restart it.
1696 		 */
1697 		lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1698 		lpfc_offline(phba);
1699 		lpfc_sli_brdrestart(phba);
1700 		if (lpfc_online(phba) == 0) {	/* Initialize the HBA */
1701 			lpfc_unblock_mgmt_io(phba);
1702 			return;
1703 		}
1704 		lpfc_unblock_mgmt_io(phba);
1705 	} else if (phba->work_hs & HS_CRIT_TEMP) {
1706 		temperature = readl(phba->MBslimaddr + TEMPERATURE_OFFSET);
1707 		temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
1708 		temp_event_data.event_code = LPFC_CRIT_TEMP;
1709 		temp_event_data.data = (uint32_t)temperature;
1710 
1711 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1712 				"0406 Adapter maximum temperature exceeded "
1713 				"(%ld), taking this port offline "
1714 				"Data: x%x x%x x%x\n",
1715 				temperature, phba->work_hs,
1716 				phba->work_status[0], phba->work_status[1]);
1717 
1718 		shost = lpfc_shost_from_vport(phba->pport);
1719 		fc_host_post_vendor_event(shost, fc_get_event_number(),
1720 					  sizeof(temp_event_data),
1721 					  (char *) &temp_event_data,
1722 					  SCSI_NL_VID_TYPE_PCI
1723 					  | PCI_VENDOR_ID_EMULEX);
1724 
1725 		spin_lock_irq(&phba->hbalock);
1726 		phba->over_temp_state = HBA_OVER_TEMP;
1727 		spin_unlock_irq(&phba->hbalock);
1728 		lpfc_offline_eratt(phba);
1729 
1730 	} else {
1731 		/* The if clause above forces this code path when the status
1732 		 * failure is a value other than FFER6. Do not call the offline
1733 		 * twice. This is the adapter hardware error path.
1734 		 */
1735 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1736 				"0457 Adapter Hardware Error "
1737 				"Data: x%x x%x x%x\n",
1738 				phba->work_hs,
1739 				phba->work_status[0], phba->work_status[1]);
1740 
1741 		event_data = FC_REG_DUMP_EVENT;
1742 		shost = lpfc_shost_from_vport(vport);
1743 		fc_host_post_vendor_event(shost, fc_get_event_number(),
1744 				sizeof(event_data), (char *) &event_data,
1745 				SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
1746 
1747 		lpfc_offline_eratt(phba);
1748 	}
1749 	return;
1750 }
1751 
1752 /**
1753  * lpfc_sli4_port_sta_fn_reset - The SLI4 function reset due to port status reg
1754  * @phba: pointer to lpfc hba data structure.
1755  * @mbx_action: flag for mailbox shutdown action.
1756  *
1757  * This routine is invoked to perform an SLI4 port PCI function reset in
1758  * response to port status register polling attention. It waits for port
1759  * status register (ERR, RDY, RN) bits before proceeding with function reset.
1760  * During this process, interrupt vectors are freed and later requested
1761  * for handling possible port resource change.
1762  **/
1763 static int
lpfc_sli4_port_sta_fn_reset(struct lpfc_hba * phba,int mbx_action,bool en_rn_msg)1764 lpfc_sli4_port_sta_fn_reset(struct lpfc_hba *phba, int mbx_action,
1765 			    bool en_rn_msg)
1766 {
1767 	int rc;
1768 	uint32_t intr_mode;
1769 
1770 	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
1771 	    LPFC_SLI_INTF_IF_TYPE_2) {
1772 		/*
1773 		 * On error status condition, driver need to wait for port
1774 		 * ready before performing reset.
1775 		 */
1776 		rc = lpfc_sli4_pdev_status_reg_wait(phba);
1777 		if (rc)
1778 			return rc;
1779 	}
1780 
1781 	/* need reset: attempt for port recovery */
1782 	if (en_rn_msg)
1783 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1784 				"2887 Reset Needed: Attempting Port "
1785 				"Recovery...\n");
1786 	lpfc_offline_prep(phba, mbx_action);
1787 	lpfc_sli_flush_io_rings(phba);
1788 	lpfc_offline(phba);
1789 	/* release interrupt for possible resource change */
1790 	lpfc_sli4_disable_intr(phba);
1791 	rc = lpfc_sli_brdrestart(phba);
1792 	if (rc) {
1793 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1794 				"6309 Failed to restart board\n");
1795 		return rc;
1796 	}
1797 	/* request and enable interrupt */
1798 	intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
1799 	if (intr_mode == LPFC_INTR_ERROR) {
1800 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1801 				"3175 Failed to enable interrupt\n");
1802 		return -EIO;
1803 	}
1804 	phba->intr_mode = intr_mode;
1805 	rc = lpfc_online(phba);
1806 	if (rc == 0)
1807 		lpfc_unblock_mgmt_io(phba);
1808 
1809 	return rc;
1810 }
1811 
1812 /**
1813  * lpfc_handle_eratt_s4 - The SLI4 HBA hardware error handler
1814  * @phba: pointer to lpfc hba data structure.
1815  *
1816  * This routine is invoked to handle the SLI4 HBA hardware error attention
1817  * conditions.
1818  **/
1819 static void
lpfc_handle_eratt_s4(struct lpfc_hba * phba)1820 lpfc_handle_eratt_s4(struct lpfc_hba *phba)
1821 {
1822 	struct lpfc_vport *vport = phba->pport;
1823 	uint32_t event_data;
1824 	struct Scsi_Host *shost;
1825 	uint32_t if_type;
1826 	struct lpfc_register portstat_reg = {0};
1827 	uint32_t reg_err1, reg_err2;
1828 	uint32_t uerrlo_reg, uemasklo_reg;
1829 	uint32_t smphr_port_status = 0, pci_rd_rc1, pci_rd_rc2;
1830 	bool en_rn_msg = true;
1831 	struct temp_event temp_event_data;
1832 	struct lpfc_register portsmphr_reg;
1833 	int rc, i;
1834 
1835 	/* If the pci channel is offline, ignore possible errors, since
1836 	 * we cannot communicate with the pci card anyway.
1837 	 */
1838 	if (pci_channel_offline(phba->pcidev)) {
1839 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1840 				"3166 pci channel is offline\n");
1841 		lpfc_sli4_offline_eratt(phba);
1842 		return;
1843 	}
1844 
1845 	memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
1846 	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
1847 	switch (if_type) {
1848 	case LPFC_SLI_INTF_IF_TYPE_0:
1849 		pci_rd_rc1 = lpfc_readl(
1850 				phba->sli4_hba.u.if_type0.UERRLOregaddr,
1851 				&uerrlo_reg);
1852 		pci_rd_rc2 = lpfc_readl(
1853 				phba->sli4_hba.u.if_type0.UEMASKLOregaddr,
1854 				&uemasklo_reg);
1855 		/* consider PCI bus read error as pci_channel_offline */
1856 		if (pci_rd_rc1 == -EIO && pci_rd_rc2 == -EIO)
1857 			return;
1858 		if (!(phba->hba_flag & HBA_RECOVERABLE_UE)) {
1859 			lpfc_sli4_offline_eratt(phba);
1860 			return;
1861 		}
1862 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1863 				"7623 Checking UE recoverable");
1864 
1865 		for (i = 0; i < phba->sli4_hba.ue_to_sr / 1000; i++) {
1866 			if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
1867 				       &portsmphr_reg.word0))
1868 				continue;
1869 
1870 			smphr_port_status = bf_get(lpfc_port_smphr_port_status,
1871 						   &portsmphr_reg);
1872 			if ((smphr_port_status & LPFC_PORT_SEM_MASK) ==
1873 			    LPFC_PORT_SEM_UE_RECOVERABLE)
1874 				break;
1875 			/*Sleep for 1Sec, before checking SEMAPHORE */
1876 			msleep(1000);
1877 		}
1878 
1879 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1880 				"4827 smphr_port_status x%x : Waited %dSec",
1881 				smphr_port_status, i);
1882 
1883 		/* Recoverable UE, reset the HBA device */
1884 		if ((smphr_port_status & LPFC_PORT_SEM_MASK) ==
1885 		    LPFC_PORT_SEM_UE_RECOVERABLE) {
1886 			for (i = 0; i < 20; i++) {
1887 				msleep(1000);
1888 				if (!lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
1889 				    &portsmphr_reg.word0) &&
1890 				    (LPFC_POST_STAGE_PORT_READY ==
1891 				     bf_get(lpfc_port_smphr_port_status,
1892 				     &portsmphr_reg))) {
1893 					rc = lpfc_sli4_port_sta_fn_reset(phba,
1894 						LPFC_MBX_NO_WAIT, en_rn_msg);
1895 					if (rc == 0)
1896 						return;
1897 					lpfc_printf_log(phba,
1898 						KERN_ERR, LOG_INIT,
1899 						"4215 Failed to recover UE");
1900 					break;
1901 				}
1902 			}
1903 		}
1904 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1905 				"7624 Firmware not ready: Failing UE recovery,"
1906 				" waited %dSec", i);
1907 		phba->link_state = LPFC_HBA_ERROR;
1908 		break;
1909 
1910 	case LPFC_SLI_INTF_IF_TYPE_2:
1911 	case LPFC_SLI_INTF_IF_TYPE_6:
1912 		pci_rd_rc1 = lpfc_readl(
1913 				phba->sli4_hba.u.if_type2.STATUSregaddr,
1914 				&portstat_reg.word0);
1915 		/* consider PCI bus read error as pci_channel_offline */
1916 		if (pci_rd_rc1 == -EIO) {
1917 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1918 				"3151 PCI bus read access failure: x%x\n",
1919 				readl(phba->sli4_hba.u.if_type2.STATUSregaddr));
1920 			lpfc_sli4_offline_eratt(phba);
1921 			return;
1922 		}
1923 		reg_err1 = readl(phba->sli4_hba.u.if_type2.ERR1regaddr);
1924 		reg_err2 = readl(phba->sli4_hba.u.if_type2.ERR2regaddr);
1925 		if (bf_get(lpfc_sliport_status_oti, &portstat_reg)) {
1926 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1927 				"2889 Port Overtemperature event, "
1928 				"taking port offline Data: x%x x%x\n",
1929 				reg_err1, reg_err2);
1930 
1931 			phba->sfp_alarm |= LPFC_TRANSGRESSION_HIGH_TEMPERATURE;
1932 			temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
1933 			temp_event_data.event_code = LPFC_CRIT_TEMP;
1934 			temp_event_data.data = 0xFFFFFFFF;
1935 
1936 			shost = lpfc_shost_from_vport(phba->pport);
1937 			fc_host_post_vendor_event(shost, fc_get_event_number(),
1938 						  sizeof(temp_event_data),
1939 						  (char *)&temp_event_data,
1940 						  SCSI_NL_VID_TYPE_PCI
1941 						  | PCI_VENDOR_ID_EMULEX);
1942 
1943 			spin_lock_irq(&phba->hbalock);
1944 			phba->over_temp_state = HBA_OVER_TEMP;
1945 			spin_unlock_irq(&phba->hbalock);
1946 			lpfc_sli4_offline_eratt(phba);
1947 			return;
1948 		}
1949 		if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
1950 		    reg_err2 == SLIPORT_ERR2_REG_FW_RESTART) {
1951 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1952 					"3143 Port Down: Firmware Update "
1953 					"Detected\n");
1954 			en_rn_msg = false;
1955 		} else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
1956 			 reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
1957 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1958 					"3144 Port Down: Debug Dump\n");
1959 		else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
1960 			 reg_err2 == SLIPORT_ERR2_REG_FUNC_PROVISON)
1961 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1962 					"3145 Port Down: Provisioning\n");
1963 
1964 		/* If resets are disabled then leave the HBA alone and return */
1965 		if (!phba->cfg_enable_hba_reset)
1966 			return;
1967 
1968 		/* Check port status register for function reset */
1969 		rc = lpfc_sli4_port_sta_fn_reset(phba, LPFC_MBX_NO_WAIT,
1970 				en_rn_msg);
1971 		if (rc == 0) {
1972 			/* don't report event on forced debug dump */
1973 			if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
1974 			    reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
1975 				return;
1976 			else
1977 				break;
1978 		}
1979 		/* fall through for not able to recover */
1980 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1981 				"3152 Unrecoverable error\n");
1982 		phba->link_state = LPFC_HBA_ERROR;
1983 		break;
1984 	case LPFC_SLI_INTF_IF_TYPE_1:
1985 	default:
1986 		break;
1987 	}
1988 	lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
1989 			"3123 Report dump event to upper layer\n");
1990 	/* Send an internal error event to mgmt application */
1991 	lpfc_board_errevt_to_mgmt(phba);
1992 
1993 	event_data = FC_REG_DUMP_EVENT;
1994 	shost = lpfc_shost_from_vport(vport);
1995 	fc_host_post_vendor_event(shost, fc_get_event_number(),
1996 				  sizeof(event_data), (char *) &event_data,
1997 				  SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
1998 }
1999 
2000 /**
2001  * lpfc_handle_eratt - Wrapper func for handling hba error attention
2002  * @phba: pointer to lpfc HBA data structure.
2003  *
2004  * This routine wraps the actual SLI3 or SLI4 hba error attention handling
2005  * routine from the API jump table function pointer from the lpfc_hba struct.
2006  *
2007  * Return codes
2008  *   0 - success.
2009  *   Any other value - error.
2010  **/
2011 void
lpfc_handle_eratt(struct lpfc_hba * phba)2012 lpfc_handle_eratt(struct lpfc_hba *phba)
2013 {
2014 	(*phba->lpfc_handle_eratt)(phba);
2015 }
2016 
2017 /**
2018  * lpfc_handle_latt - The HBA link event handler
2019  * @phba: pointer to lpfc hba data structure.
2020  *
2021  * This routine is invoked from the worker thread to handle a HBA host
2022  * attention link event. SLI3 only.
2023  **/
2024 void
lpfc_handle_latt(struct lpfc_hba * phba)2025 lpfc_handle_latt(struct lpfc_hba *phba)
2026 {
2027 	struct lpfc_vport *vport = phba->pport;
2028 	struct lpfc_sli   *psli = &phba->sli;
2029 	LPFC_MBOXQ_t *pmb;
2030 	volatile uint32_t control;
2031 	struct lpfc_dmabuf *mp;
2032 	int rc = 0;
2033 
2034 	pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2035 	if (!pmb) {
2036 		rc = 1;
2037 		goto lpfc_handle_latt_err_exit;
2038 	}
2039 
2040 	mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2041 	if (!mp) {
2042 		rc = 2;
2043 		goto lpfc_handle_latt_free_pmb;
2044 	}
2045 
2046 	mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
2047 	if (!mp->virt) {
2048 		rc = 3;
2049 		goto lpfc_handle_latt_free_mp;
2050 	}
2051 
2052 	/* Cleanup any outstanding ELS commands */
2053 	lpfc_els_flush_all_cmd(phba);
2054 
2055 	psli->slistat.link_event++;
2056 	lpfc_read_topology(phba, pmb, mp);
2057 	pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
2058 	pmb->vport = vport;
2059 	/* Block ELS IOCBs until we have processed this mbox command */
2060 	phba->sli.sli3_ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
2061 	rc = lpfc_sli_issue_mbox (phba, pmb, MBX_NOWAIT);
2062 	if (rc == MBX_NOT_FINISHED) {
2063 		rc = 4;
2064 		goto lpfc_handle_latt_free_mbuf;
2065 	}
2066 
2067 	/* Clear Link Attention in HA REG */
2068 	spin_lock_irq(&phba->hbalock);
2069 	writel(HA_LATT, phba->HAregaddr);
2070 	readl(phba->HAregaddr); /* flush */
2071 	spin_unlock_irq(&phba->hbalock);
2072 
2073 	return;
2074 
2075 lpfc_handle_latt_free_mbuf:
2076 	phba->sli.sli3_ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
2077 	lpfc_mbuf_free(phba, mp->virt, mp->phys);
2078 lpfc_handle_latt_free_mp:
2079 	kfree(mp);
2080 lpfc_handle_latt_free_pmb:
2081 	mempool_free(pmb, phba->mbox_mem_pool);
2082 lpfc_handle_latt_err_exit:
2083 	/* Enable Link attention interrupts */
2084 	spin_lock_irq(&phba->hbalock);
2085 	psli->sli_flag |= LPFC_PROCESS_LA;
2086 	control = readl(phba->HCregaddr);
2087 	control |= HC_LAINT_ENA;
2088 	writel(control, phba->HCregaddr);
2089 	readl(phba->HCregaddr); /* flush */
2090 
2091 	/* Clear Link Attention in HA REG */
2092 	writel(HA_LATT, phba->HAregaddr);
2093 	readl(phba->HAregaddr); /* flush */
2094 	spin_unlock_irq(&phba->hbalock);
2095 	lpfc_linkdown(phba);
2096 	phba->link_state = LPFC_HBA_ERROR;
2097 
2098 	lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
2099 		     "0300 LATT: Cannot issue READ_LA: Data:%d\n", rc);
2100 
2101 	return;
2102 }
2103 
2104 /**
2105  * lpfc_parse_vpd - Parse VPD (Vital Product Data)
2106  * @phba: pointer to lpfc hba data structure.
2107  * @vpd: pointer to the vital product data.
2108  * @len: length of the vital product data in bytes.
2109  *
2110  * This routine parses the Vital Product Data (VPD). The VPD is treated as
2111  * an array of characters. In this routine, the ModelName, ProgramType, and
2112  * ModelDesc, etc. fields of the phba data structure will be populated.
2113  *
2114  * Return codes
2115  *   0 - pointer to the VPD passed in is NULL
2116  *   1 - success
2117  **/
2118 int
lpfc_parse_vpd(struct lpfc_hba * phba,uint8_t * vpd,int len)2119 lpfc_parse_vpd(struct lpfc_hba *phba, uint8_t *vpd, int len)
2120 {
2121 	uint8_t lenlo, lenhi;
2122 	int Length;
2123 	int i, j;
2124 	int finished = 0;
2125 	int index = 0;
2126 
2127 	if (!vpd)
2128 		return 0;
2129 
2130 	/* Vital Product */
2131 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2132 			"0455 Vital Product Data: x%x x%x x%x x%x\n",
2133 			(uint32_t) vpd[0], (uint32_t) vpd[1], (uint32_t) vpd[2],
2134 			(uint32_t) vpd[3]);
2135 	while (!finished && (index < (len - 4))) {
2136 		switch (vpd[index]) {
2137 		case 0x82:
2138 		case 0x91:
2139 			index += 1;
2140 			lenlo = vpd[index];
2141 			index += 1;
2142 			lenhi = vpd[index];
2143 			index += 1;
2144 			i = ((((unsigned short)lenhi) << 8) + lenlo);
2145 			index += i;
2146 			break;
2147 		case 0x90:
2148 			index += 1;
2149 			lenlo = vpd[index];
2150 			index += 1;
2151 			lenhi = vpd[index];
2152 			index += 1;
2153 			Length = ((((unsigned short)lenhi) << 8) + lenlo);
2154 			if (Length > len - index)
2155 				Length = len - index;
2156 			while (Length > 0) {
2157 			/* Look for Serial Number */
2158 			if ((vpd[index] == 'S') && (vpd[index+1] == 'N')) {
2159 				index += 2;
2160 				i = vpd[index];
2161 				index += 1;
2162 				j = 0;
2163 				Length -= (3+i);
2164 				while(i--) {
2165 					phba->SerialNumber[j++] = vpd[index++];
2166 					if (j == 31)
2167 						break;
2168 				}
2169 				phba->SerialNumber[j] = 0;
2170 				continue;
2171 			}
2172 			else if ((vpd[index] == 'V') && (vpd[index+1] == '1')) {
2173 				phba->vpd_flag |= VPD_MODEL_DESC;
2174 				index += 2;
2175 				i = vpd[index];
2176 				index += 1;
2177 				j = 0;
2178 				Length -= (3+i);
2179 				while(i--) {
2180 					phba->ModelDesc[j++] = vpd[index++];
2181 					if (j == 255)
2182 						break;
2183 				}
2184 				phba->ModelDesc[j] = 0;
2185 				continue;
2186 			}
2187 			else if ((vpd[index] == 'V') && (vpd[index+1] == '2')) {
2188 				phba->vpd_flag |= VPD_MODEL_NAME;
2189 				index += 2;
2190 				i = vpd[index];
2191 				index += 1;
2192 				j = 0;
2193 				Length -= (3+i);
2194 				while(i--) {
2195 					phba->ModelName[j++] = vpd[index++];
2196 					if (j == 79)
2197 						break;
2198 				}
2199 				phba->ModelName[j] = 0;
2200 				continue;
2201 			}
2202 			else if ((vpd[index] == 'V') && (vpd[index+1] == '3')) {
2203 				phba->vpd_flag |= VPD_PROGRAM_TYPE;
2204 				index += 2;
2205 				i = vpd[index];
2206 				index += 1;
2207 				j = 0;
2208 				Length -= (3+i);
2209 				while(i--) {
2210 					phba->ProgramType[j++] = vpd[index++];
2211 					if (j == 255)
2212 						break;
2213 				}
2214 				phba->ProgramType[j] = 0;
2215 				continue;
2216 			}
2217 			else if ((vpd[index] == 'V') && (vpd[index+1] == '4')) {
2218 				phba->vpd_flag |= VPD_PORT;
2219 				index += 2;
2220 				i = vpd[index];
2221 				index += 1;
2222 				j = 0;
2223 				Length -= (3+i);
2224 				while(i--) {
2225 					if ((phba->sli_rev == LPFC_SLI_REV4) &&
2226 					    (phba->sli4_hba.pport_name_sta ==
2227 					     LPFC_SLI4_PPNAME_GET)) {
2228 						j++;
2229 						index++;
2230 					} else
2231 						phba->Port[j++] = vpd[index++];
2232 					if (j == 19)
2233 						break;
2234 				}
2235 				if ((phba->sli_rev != LPFC_SLI_REV4) ||
2236 				    (phba->sli4_hba.pport_name_sta ==
2237 				     LPFC_SLI4_PPNAME_NON))
2238 					phba->Port[j] = 0;
2239 				continue;
2240 			}
2241 			else {
2242 				index += 2;
2243 				i = vpd[index];
2244 				index += 1;
2245 				index += i;
2246 				Length -= (3 + i);
2247 			}
2248 		}
2249 		finished = 0;
2250 		break;
2251 		case 0x78:
2252 			finished = 1;
2253 			break;
2254 		default:
2255 			index ++;
2256 			break;
2257 		}
2258 	}
2259 
2260 	return(1);
2261 }
2262 
2263 /**
2264  * lpfc_get_hba_model_desc - Retrieve HBA device model name and description
2265  * @phba: pointer to lpfc hba data structure.
2266  * @mdp: pointer to the data structure to hold the derived model name.
2267  * @descp: pointer to the data structure to hold the derived description.
2268  *
2269  * This routine retrieves HBA's description based on its registered PCI device
2270  * ID. The @descp passed into this function points to an array of 256 chars. It
2271  * shall be returned with the model name, maximum speed, and the host bus type.
2272  * The @mdp passed into this function points to an array of 80 chars. When the
2273  * function returns, the @mdp will be filled with the model name.
2274  **/
2275 static void
lpfc_get_hba_model_desc(struct lpfc_hba * phba,uint8_t * mdp,uint8_t * descp)2276 lpfc_get_hba_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp)
2277 {
2278 	lpfc_vpd_t *vp;
2279 	uint16_t dev_id = phba->pcidev->device;
2280 	int max_speed;
2281 	int GE = 0;
2282 	int oneConnect = 0; /* default is not a oneConnect */
2283 	struct {
2284 		char *name;
2285 		char *bus;
2286 		char *function;
2287 	} m = {"<Unknown>", "", ""};
2288 
2289 	if (mdp && mdp[0] != '\0'
2290 		&& descp && descp[0] != '\0')
2291 		return;
2292 
2293 	if (phba->lmt & LMT_64Gb)
2294 		max_speed = 64;
2295 	else if (phba->lmt & LMT_32Gb)
2296 		max_speed = 32;
2297 	else if (phba->lmt & LMT_16Gb)
2298 		max_speed = 16;
2299 	else if (phba->lmt & LMT_10Gb)
2300 		max_speed = 10;
2301 	else if (phba->lmt & LMT_8Gb)
2302 		max_speed = 8;
2303 	else if (phba->lmt & LMT_4Gb)
2304 		max_speed = 4;
2305 	else if (phba->lmt & LMT_2Gb)
2306 		max_speed = 2;
2307 	else if (phba->lmt & LMT_1Gb)
2308 		max_speed = 1;
2309 	else
2310 		max_speed = 0;
2311 
2312 	vp = &phba->vpd;
2313 
2314 	switch (dev_id) {
2315 	case PCI_DEVICE_ID_FIREFLY:
2316 		m = (typeof(m)){"LP6000", "PCI",
2317 				"Obsolete, Unsupported Fibre Channel Adapter"};
2318 		break;
2319 	case PCI_DEVICE_ID_SUPERFLY:
2320 		if (vp->rev.biuRev >= 1 && vp->rev.biuRev <= 3)
2321 			m = (typeof(m)){"LP7000", "PCI", ""};
2322 		else
2323 			m = (typeof(m)){"LP7000E", "PCI", ""};
2324 		m.function = "Obsolete, Unsupported Fibre Channel Adapter";
2325 		break;
2326 	case PCI_DEVICE_ID_DRAGONFLY:
2327 		m = (typeof(m)){"LP8000", "PCI",
2328 				"Obsolete, Unsupported Fibre Channel Adapter"};
2329 		break;
2330 	case PCI_DEVICE_ID_CENTAUR:
2331 		if (FC_JEDEC_ID(vp->rev.biuRev) == CENTAUR_2G_JEDEC_ID)
2332 			m = (typeof(m)){"LP9002", "PCI", ""};
2333 		else
2334 			m = (typeof(m)){"LP9000", "PCI", ""};
2335 		m.function = "Obsolete, Unsupported Fibre Channel Adapter";
2336 		break;
2337 	case PCI_DEVICE_ID_RFLY:
2338 		m = (typeof(m)){"LP952", "PCI",
2339 				"Obsolete, Unsupported Fibre Channel Adapter"};
2340 		break;
2341 	case PCI_DEVICE_ID_PEGASUS:
2342 		m = (typeof(m)){"LP9802", "PCI-X",
2343 				"Obsolete, Unsupported Fibre Channel Adapter"};
2344 		break;
2345 	case PCI_DEVICE_ID_THOR:
2346 		m = (typeof(m)){"LP10000", "PCI-X",
2347 				"Obsolete, Unsupported Fibre Channel Adapter"};
2348 		break;
2349 	case PCI_DEVICE_ID_VIPER:
2350 		m = (typeof(m)){"LPX1000",  "PCI-X",
2351 				"Obsolete, Unsupported Fibre Channel Adapter"};
2352 		break;
2353 	case PCI_DEVICE_ID_PFLY:
2354 		m = (typeof(m)){"LP982", "PCI-X",
2355 				"Obsolete, Unsupported Fibre Channel Adapter"};
2356 		break;
2357 	case PCI_DEVICE_ID_TFLY:
2358 		m = (typeof(m)){"LP1050", "PCI-X",
2359 				"Obsolete, Unsupported Fibre Channel Adapter"};
2360 		break;
2361 	case PCI_DEVICE_ID_HELIOS:
2362 		m = (typeof(m)){"LP11000", "PCI-X2",
2363 				"Obsolete, Unsupported Fibre Channel Adapter"};
2364 		break;
2365 	case PCI_DEVICE_ID_HELIOS_SCSP:
2366 		m = (typeof(m)){"LP11000-SP", "PCI-X2",
2367 				"Obsolete, Unsupported Fibre Channel Adapter"};
2368 		break;
2369 	case PCI_DEVICE_ID_HELIOS_DCSP:
2370 		m = (typeof(m)){"LP11002-SP",  "PCI-X2",
2371 				"Obsolete, Unsupported Fibre Channel Adapter"};
2372 		break;
2373 	case PCI_DEVICE_ID_NEPTUNE:
2374 		m = (typeof(m)){"LPe1000", "PCIe",
2375 				"Obsolete, Unsupported Fibre Channel Adapter"};
2376 		break;
2377 	case PCI_DEVICE_ID_NEPTUNE_SCSP:
2378 		m = (typeof(m)){"LPe1000-SP", "PCIe",
2379 				"Obsolete, Unsupported Fibre Channel Adapter"};
2380 		break;
2381 	case PCI_DEVICE_ID_NEPTUNE_DCSP:
2382 		m = (typeof(m)){"LPe1002-SP", "PCIe",
2383 				"Obsolete, Unsupported Fibre Channel Adapter"};
2384 		break;
2385 	case PCI_DEVICE_ID_BMID:
2386 		m = (typeof(m)){"LP1150", "PCI-X2", "Fibre Channel Adapter"};
2387 		break;
2388 	case PCI_DEVICE_ID_BSMB:
2389 		m = (typeof(m)){"LP111", "PCI-X2",
2390 				"Obsolete, Unsupported Fibre Channel Adapter"};
2391 		break;
2392 	case PCI_DEVICE_ID_ZEPHYR:
2393 		m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
2394 		break;
2395 	case PCI_DEVICE_ID_ZEPHYR_SCSP:
2396 		m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
2397 		break;
2398 	case PCI_DEVICE_ID_ZEPHYR_DCSP:
2399 		m = (typeof(m)){"LP2105", "PCIe", "FCoE Adapter"};
2400 		GE = 1;
2401 		break;
2402 	case PCI_DEVICE_ID_ZMID:
2403 		m = (typeof(m)){"LPe1150", "PCIe", "Fibre Channel Adapter"};
2404 		break;
2405 	case PCI_DEVICE_ID_ZSMB:
2406 		m = (typeof(m)){"LPe111", "PCIe", "Fibre Channel Adapter"};
2407 		break;
2408 	case PCI_DEVICE_ID_LP101:
2409 		m = (typeof(m)){"LP101", "PCI-X",
2410 				"Obsolete, Unsupported Fibre Channel Adapter"};
2411 		break;
2412 	case PCI_DEVICE_ID_LP10000S:
2413 		m = (typeof(m)){"LP10000-S", "PCI",
2414 				"Obsolete, Unsupported Fibre Channel Adapter"};
2415 		break;
2416 	case PCI_DEVICE_ID_LP11000S:
2417 		m = (typeof(m)){"LP11000-S", "PCI-X2",
2418 				"Obsolete, Unsupported Fibre Channel Adapter"};
2419 		break;
2420 	case PCI_DEVICE_ID_LPE11000S:
2421 		m = (typeof(m)){"LPe11000-S", "PCIe",
2422 				"Obsolete, Unsupported Fibre Channel Adapter"};
2423 		break;
2424 	case PCI_DEVICE_ID_SAT:
2425 		m = (typeof(m)){"LPe12000", "PCIe", "Fibre Channel Adapter"};
2426 		break;
2427 	case PCI_DEVICE_ID_SAT_MID:
2428 		m = (typeof(m)){"LPe1250", "PCIe", "Fibre Channel Adapter"};
2429 		break;
2430 	case PCI_DEVICE_ID_SAT_SMB:
2431 		m = (typeof(m)){"LPe121", "PCIe", "Fibre Channel Adapter"};
2432 		break;
2433 	case PCI_DEVICE_ID_SAT_DCSP:
2434 		m = (typeof(m)){"LPe12002-SP", "PCIe", "Fibre Channel Adapter"};
2435 		break;
2436 	case PCI_DEVICE_ID_SAT_SCSP:
2437 		m = (typeof(m)){"LPe12000-SP", "PCIe", "Fibre Channel Adapter"};
2438 		break;
2439 	case PCI_DEVICE_ID_SAT_S:
2440 		m = (typeof(m)){"LPe12000-S", "PCIe", "Fibre Channel Adapter"};
2441 		break;
2442 	case PCI_DEVICE_ID_HORNET:
2443 		m = (typeof(m)){"LP21000", "PCIe",
2444 				"Obsolete, Unsupported FCoE Adapter"};
2445 		GE = 1;
2446 		break;
2447 	case PCI_DEVICE_ID_PROTEUS_VF:
2448 		m = (typeof(m)){"LPev12000", "PCIe IOV",
2449 				"Obsolete, Unsupported Fibre Channel Adapter"};
2450 		break;
2451 	case PCI_DEVICE_ID_PROTEUS_PF:
2452 		m = (typeof(m)){"LPev12000", "PCIe IOV",
2453 				"Obsolete, Unsupported Fibre Channel Adapter"};
2454 		break;
2455 	case PCI_DEVICE_ID_PROTEUS_S:
2456 		m = (typeof(m)){"LPemv12002-S", "PCIe IOV",
2457 				"Obsolete, Unsupported Fibre Channel Adapter"};
2458 		break;
2459 	case PCI_DEVICE_ID_TIGERSHARK:
2460 		oneConnect = 1;
2461 		m = (typeof(m)){"OCe10100", "PCIe", "FCoE"};
2462 		break;
2463 	case PCI_DEVICE_ID_TOMCAT:
2464 		oneConnect = 1;
2465 		m = (typeof(m)){"OCe11100", "PCIe", "FCoE"};
2466 		break;
2467 	case PCI_DEVICE_ID_FALCON:
2468 		m = (typeof(m)){"LPSe12002-ML1-E", "PCIe",
2469 				"EmulexSecure Fibre"};
2470 		break;
2471 	case PCI_DEVICE_ID_BALIUS:
2472 		m = (typeof(m)){"LPVe12002", "PCIe Shared I/O",
2473 				"Obsolete, Unsupported Fibre Channel Adapter"};
2474 		break;
2475 	case PCI_DEVICE_ID_LANCER_FC:
2476 		m = (typeof(m)){"LPe16000", "PCIe", "Fibre Channel Adapter"};
2477 		break;
2478 	case PCI_DEVICE_ID_LANCER_FC_VF:
2479 		m = (typeof(m)){"LPe16000", "PCIe",
2480 				"Obsolete, Unsupported Fibre Channel Adapter"};
2481 		break;
2482 	case PCI_DEVICE_ID_LANCER_FCOE:
2483 		oneConnect = 1;
2484 		m = (typeof(m)){"OCe15100", "PCIe", "FCoE"};
2485 		break;
2486 	case PCI_DEVICE_ID_LANCER_FCOE_VF:
2487 		oneConnect = 1;
2488 		m = (typeof(m)){"OCe15100", "PCIe",
2489 				"Obsolete, Unsupported FCoE"};
2490 		break;
2491 	case PCI_DEVICE_ID_LANCER_G6_FC:
2492 		m = (typeof(m)){"LPe32000", "PCIe", "Fibre Channel Adapter"};
2493 		break;
2494 	case PCI_DEVICE_ID_LANCER_G7_FC:
2495 		m = (typeof(m)){"LPe36000", "PCIe", "Fibre Channel Adapter"};
2496 		break;
2497 	case PCI_DEVICE_ID_SKYHAWK:
2498 	case PCI_DEVICE_ID_SKYHAWK_VF:
2499 		oneConnect = 1;
2500 		m = (typeof(m)){"OCe14000", "PCIe", "FCoE"};
2501 		break;
2502 	default:
2503 		m = (typeof(m)){"Unknown", "", ""};
2504 		break;
2505 	}
2506 
2507 	if (mdp && mdp[0] == '\0')
2508 		snprintf(mdp, 79,"%s", m.name);
2509 	/*
2510 	 * oneConnect hba requires special processing, they are all initiators
2511 	 * and we put the port number on the end
2512 	 */
2513 	if (descp && descp[0] == '\0') {
2514 		if (oneConnect)
2515 			snprintf(descp, 255,
2516 				"Emulex OneConnect %s, %s Initiator %s",
2517 				m.name, m.function,
2518 				phba->Port);
2519 		else if (max_speed == 0)
2520 			snprintf(descp, 255,
2521 				"Emulex %s %s %s",
2522 				m.name, m.bus, m.function);
2523 		else
2524 			snprintf(descp, 255,
2525 				"Emulex %s %d%s %s %s",
2526 				m.name, max_speed, (GE) ? "GE" : "Gb",
2527 				m.bus, m.function);
2528 	}
2529 }
2530 
2531 /**
2532  * lpfc_post_buffer - Post IOCB(s) with DMA buffer descriptor(s) to a IOCB ring
2533  * @phba: pointer to lpfc hba data structure.
2534  * @pring: pointer to a IOCB ring.
2535  * @cnt: the number of IOCBs to be posted to the IOCB ring.
2536  *
2537  * This routine posts a given number of IOCBs with the associated DMA buffer
2538  * descriptors specified by the cnt argument to the given IOCB ring.
2539  *
2540  * Return codes
2541  *   The number of IOCBs NOT able to be posted to the IOCB ring.
2542  **/
2543 int
lpfc_post_buffer(struct lpfc_hba * phba,struct lpfc_sli_ring * pring,int cnt)2544 lpfc_post_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, int cnt)
2545 {
2546 	IOCB_t *icmd;
2547 	struct lpfc_iocbq *iocb;
2548 	struct lpfc_dmabuf *mp1, *mp2;
2549 
2550 	cnt += pring->missbufcnt;
2551 
2552 	/* While there are buffers to post */
2553 	while (cnt > 0) {
2554 		/* Allocate buffer for  command iocb */
2555 		iocb = lpfc_sli_get_iocbq(phba);
2556 		if (iocb == NULL) {
2557 			pring->missbufcnt = cnt;
2558 			return cnt;
2559 		}
2560 		icmd = &iocb->iocb;
2561 
2562 		/* 2 buffers can be posted per command */
2563 		/* Allocate buffer to post */
2564 		mp1 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2565 		if (mp1)
2566 		    mp1->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &mp1->phys);
2567 		if (!mp1 || !mp1->virt) {
2568 			kfree(mp1);
2569 			lpfc_sli_release_iocbq(phba, iocb);
2570 			pring->missbufcnt = cnt;
2571 			return cnt;
2572 		}
2573 
2574 		INIT_LIST_HEAD(&mp1->list);
2575 		/* Allocate buffer to post */
2576 		if (cnt > 1) {
2577 			mp2 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2578 			if (mp2)
2579 				mp2->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
2580 							    &mp2->phys);
2581 			if (!mp2 || !mp2->virt) {
2582 				kfree(mp2);
2583 				lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2584 				kfree(mp1);
2585 				lpfc_sli_release_iocbq(phba, iocb);
2586 				pring->missbufcnt = cnt;
2587 				return cnt;
2588 			}
2589 
2590 			INIT_LIST_HEAD(&mp2->list);
2591 		} else {
2592 			mp2 = NULL;
2593 		}
2594 
2595 		icmd->un.cont64[0].addrHigh = putPaddrHigh(mp1->phys);
2596 		icmd->un.cont64[0].addrLow = putPaddrLow(mp1->phys);
2597 		icmd->un.cont64[0].tus.f.bdeSize = FCELSSIZE;
2598 		icmd->ulpBdeCount = 1;
2599 		cnt--;
2600 		if (mp2) {
2601 			icmd->un.cont64[1].addrHigh = putPaddrHigh(mp2->phys);
2602 			icmd->un.cont64[1].addrLow = putPaddrLow(mp2->phys);
2603 			icmd->un.cont64[1].tus.f.bdeSize = FCELSSIZE;
2604 			cnt--;
2605 			icmd->ulpBdeCount = 2;
2606 		}
2607 
2608 		icmd->ulpCommand = CMD_QUE_RING_BUF64_CN;
2609 		icmd->ulpLe = 1;
2610 
2611 		if (lpfc_sli_issue_iocb(phba, pring->ringno, iocb, 0) ==
2612 		    IOCB_ERROR) {
2613 			lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2614 			kfree(mp1);
2615 			cnt++;
2616 			if (mp2) {
2617 				lpfc_mbuf_free(phba, mp2->virt, mp2->phys);
2618 				kfree(mp2);
2619 				cnt++;
2620 			}
2621 			lpfc_sli_release_iocbq(phba, iocb);
2622 			pring->missbufcnt = cnt;
2623 			return cnt;
2624 		}
2625 		lpfc_sli_ringpostbuf_put(phba, pring, mp1);
2626 		if (mp2)
2627 			lpfc_sli_ringpostbuf_put(phba, pring, mp2);
2628 	}
2629 	pring->missbufcnt = 0;
2630 	return 0;
2631 }
2632 
2633 /**
2634  * lpfc_post_rcv_buf - Post the initial receive IOCB buffers to ELS ring
2635  * @phba: pointer to lpfc hba data structure.
2636  *
2637  * This routine posts initial receive IOCB buffers to the ELS ring. The
2638  * current number of initial IOCB buffers specified by LPFC_BUF_RING0 is
2639  * set to 64 IOCBs. SLI3 only.
2640  *
2641  * Return codes
2642  *   0 - success (currently always success)
2643  **/
2644 static int
lpfc_post_rcv_buf(struct lpfc_hba * phba)2645 lpfc_post_rcv_buf(struct lpfc_hba *phba)
2646 {
2647 	struct lpfc_sli *psli = &phba->sli;
2648 
2649 	/* Ring 0, ELS / CT buffers */
2650 	lpfc_post_buffer(phba, &psli->sli3_ring[LPFC_ELS_RING], LPFC_BUF_RING0);
2651 	/* Ring 2 - FCP no buffers needed */
2652 
2653 	return 0;
2654 }
2655 
2656 #define S(N,V) (((V)<<(N))|((V)>>(32-(N))))
2657 
2658 /**
2659  * lpfc_sha_init - Set up initial array of hash table entries
2660  * @HashResultPointer: pointer to an array as hash table.
2661  *
2662  * This routine sets up the initial values to the array of hash table entries
2663  * for the LC HBAs.
2664  **/
2665 static void
lpfc_sha_init(uint32_t * HashResultPointer)2666 lpfc_sha_init(uint32_t * HashResultPointer)
2667 {
2668 	HashResultPointer[0] = 0x67452301;
2669 	HashResultPointer[1] = 0xEFCDAB89;
2670 	HashResultPointer[2] = 0x98BADCFE;
2671 	HashResultPointer[3] = 0x10325476;
2672 	HashResultPointer[4] = 0xC3D2E1F0;
2673 }
2674 
2675 /**
2676  * lpfc_sha_iterate - Iterate initial hash table with the working hash table
2677  * @HashResultPointer: pointer to an initial/result hash table.
2678  * @HashWorkingPointer: pointer to an working hash table.
2679  *
2680  * This routine iterates an initial hash table pointed by @HashResultPointer
2681  * with the values from the working hash table pointeed by @HashWorkingPointer.
2682  * The results are putting back to the initial hash table, returned through
2683  * the @HashResultPointer as the result hash table.
2684  **/
2685 static void
lpfc_sha_iterate(uint32_t * HashResultPointer,uint32_t * HashWorkingPointer)2686 lpfc_sha_iterate(uint32_t * HashResultPointer, uint32_t * HashWorkingPointer)
2687 {
2688 	int t;
2689 	uint32_t TEMP;
2690 	uint32_t A, B, C, D, E;
2691 	t = 16;
2692 	do {
2693 		HashWorkingPointer[t] =
2694 		    S(1,
2695 		      HashWorkingPointer[t - 3] ^ HashWorkingPointer[t -
2696 								     8] ^
2697 		      HashWorkingPointer[t - 14] ^ HashWorkingPointer[t - 16]);
2698 	} while (++t <= 79);
2699 	t = 0;
2700 	A = HashResultPointer[0];
2701 	B = HashResultPointer[1];
2702 	C = HashResultPointer[2];
2703 	D = HashResultPointer[3];
2704 	E = HashResultPointer[4];
2705 
2706 	do {
2707 		if (t < 20) {
2708 			TEMP = ((B & C) | ((~B) & D)) + 0x5A827999;
2709 		} else if (t < 40) {
2710 			TEMP = (B ^ C ^ D) + 0x6ED9EBA1;
2711 		} else if (t < 60) {
2712 			TEMP = ((B & C) | (B & D) | (C & D)) + 0x8F1BBCDC;
2713 		} else {
2714 			TEMP = (B ^ C ^ D) + 0xCA62C1D6;
2715 		}
2716 		TEMP += S(5, A) + E + HashWorkingPointer[t];
2717 		E = D;
2718 		D = C;
2719 		C = S(30, B);
2720 		B = A;
2721 		A = TEMP;
2722 	} while (++t <= 79);
2723 
2724 	HashResultPointer[0] += A;
2725 	HashResultPointer[1] += B;
2726 	HashResultPointer[2] += C;
2727 	HashResultPointer[3] += D;
2728 	HashResultPointer[4] += E;
2729 
2730 }
2731 
2732 /**
2733  * lpfc_challenge_key - Create challenge key based on WWPN of the HBA
2734  * @RandomChallenge: pointer to the entry of host challenge random number array.
2735  * @HashWorking: pointer to the entry of the working hash array.
2736  *
2737  * This routine calculates the working hash array referred by @HashWorking
2738  * from the challenge random numbers associated with the host, referred by
2739  * @RandomChallenge. The result is put into the entry of the working hash
2740  * array and returned by reference through @HashWorking.
2741  **/
2742 static void
lpfc_challenge_key(uint32_t * RandomChallenge,uint32_t * HashWorking)2743 lpfc_challenge_key(uint32_t * RandomChallenge, uint32_t * HashWorking)
2744 {
2745 	*HashWorking = (*RandomChallenge ^ *HashWorking);
2746 }
2747 
2748 /**
2749  * lpfc_hba_init - Perform special handling for LC HBA initialization
2750  * @phba: pointer to lpfc hba data structure.
2751  * @hbainit: pointer to an array of unsigned 32-bit integers.
2752  *
2753  * This routine performs the special handling for LC HBA initialization.
2754  **/
2755 void
lpfc_hba_init(struct lpfc_hba * phba,uint32_t * hbainit)2756 lpfc_hba_init(struct lpfc_hba *phba, uint32_t *hbainit)
2757 {
2758 	int t;
2759 	uint32_t *HashWorking;
2760 	uint32_t *pwwnn = (uint32_t *) phba->wwnn;
2761 
2762 	HashWorking = kcalloc(80, sizeof(uint32_t), GFP_KERNEL);
2763 	if (!HashWorking)
2764 		return;
2765 
2766 	HashWorking[0] = HashWorking[78] = *pwwnn++;
2767 	HashWorking[1] = HashWorking[79] = *pwwnn;
2768 
2769 	for (t = 0; t < 7; t++)
2770 		lpfc_challenge_key(phba->RandomData + t, HashWorking + t);
2771 
2772 	lpfc_sha_init(hbainit);
2773 	lpfc_sha_iterate(hbainit, HashWorking);
2774 	kfree(HashWorking);
2775 }
2776 
2777 /**
2778  * lpfc_cleanup - Performs vport cleanups before deleting a vport
2779  * @vport: pointer to a virtual N_Port data structure.
2780  *
2781  * This routine performs the necessary cleanups before deleting the @vport.
2782  * It invokes the discovery state machine to perform necessary state
2783  * transitions and to release the ndlps associated with the @vport. Note,
2784  * the physical port is treated as @vport 0.
2785  **/
2786 void
lpfc_cleanup(struct lpfc_vport * vport)2787 lpfc_cleanup(struct lpfc_vport *vport)
2788 {
2789 	struct lpfc_hba   *phba = vport->phba;
2790 	struct lpfc_nodelist *ndlp, *next_ndlp;
2791 	int i = 0;
2792 
2793 	if (phba->link_state > LPFC_LINK_DOWN)
2794 		lpfc_port_link_failure(vport);
2795 
2796 	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
2797 		if (!NLP_CHK_NODE_ACT(ndlp)) {
2798 			ndlp = lpfc_enable_node(vport, ndlp,
2799 						NLP_STE_UNUSED_NODE);
2800 			if (!ndlp)
2801 				continue;
2802 			spin_lock_irq(&phba->ndlp_lock);
2803 			NLP_SET_FREE_REQ(ndlp);
2804 			spin_unlock_irq(&phba->ndlp_lock);
2805 			/* Trigger the release of the ndlp memory */
2806 			lpfc_nlp_put(ndlp);
2807 			continue;
2808 		}
2809 		spin_lock_irq(&phba->ndlp_lock);
2810 		if (NLP_CHK_FREE_REQ(ndlp)) {
2811 			/* The ndlp should not be in memory free mode already */
2812 			spin_unlock_irq(&phba->ndlp_lock);
2813 			continue;
2814 		} else
2815 			/* Indicate request for freeing ndlp memory */
2816 			NLP_SET_FREE_REQ(ndlp);
2817 		spin_unlock_irq(&phba->ndlp_lock);
2818 
2819 		if (vport->port_type != LPFC_PHYSICAL_PORT &&
2820 		    ndlp->nlp_DID == Fabric_DID) {
2821 			/* Just free up ndlp with Fabric_DID for vports */
2822 			lpfc_nlp_put(ndlp);
2823 			continue;
2824 		}
2825 
2826 		/* take care of nodes in unused state before the state
2827 		 * machine taking action.
2828 		 */
2829 		if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
2830 			lpfc_nlp_put(ndlp);
2831 			continue;
2832 		}
2833 
2834 		if (ndlp->nlp_type & NLP_FABRIC)
2835 			lpfc_disc_state_machine(vport, ndlp, NULL,
2836 					NLP_EVT_DEVICE_RECOVERY);
2837 
2838 		lpfc_disc_state_machine(vport, ndlp, NULL,
2839 					     NLP_EVT_DEVICE_RM);
2840 	}
2841 
2842 	/* At this point, ALL ndlp's should be gone
2843 	 * because of the previous NLP_EVT_DEVICE_RM.
2844 	 * Lets wait for this to happen, if needed.
2845 	 */
2846 	while (!list_empty(&vport->fc_nodes)) {
2847 		if (i++ > 3000) {
2848 			lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2849 				"0233 Nodelist not empty\n");
2850 			list_for_each_entry_safe(ndlp, next_ndlp,
2851 						&vport->fc_nodes, nlp_listp) {
2852 				lpfc_printf_vlog(ndlp->vport, KERN_ERR,
2853 						LOG_NODE,
2854 						"0282 did:x%x ndlp:x%px "
2855 						"usgmap:x%x refcnt:%d\n",
2856 						ndlp->nlp_DID, (void *)ndlp,
2857 						ndlp->nlp_usg_map,
2858 						kref_read(&ndlp->kref));
2859 			}
2860 			break;
2861 		}
2862 
2863 		/* Wait for any activity on ndlps to settle */
2864 		msleep(10);
2865 	}
2866 	lpfc_cleanup_vports_rrqs(vport, NULL);
2867 }
2868 
2869 /**
2870  * lpfc_stop_vport_timers - Stop all the timers associated with a vport
2871  * @vport: pointer to a virtual N_Port data structure.
2872  *
2873  * This routine stops all the timers associated with a @vport. This function
2874  * is invoked before disabling or deleting a @vport. Note that the physical
2875  * port is treated as @vport 0.
2876  **/
2877 void
lpfc_stop_vport_timers(struct lpfc_vport * vport)2878 lpfc_stop_vport_timers(struct lpfc_vport *vport)
2879 {
2880 	del_timer_sync(&vport->els_tmofunc);
2881 	del_timer_sync(&vport->delayed_disc_tmo);
2882 	lpfc_can_disctmo(vport);
2883 	return;
2884 }
2885 
2886 /**
2887  * __lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
2888  * @phba: pointer to lpfc hba data structure.
2889  *
2890  * This routine stops the SLI4 FCF rediscover wait timer if it's on. The
2891  * caller of this routine should already hold the host lock.
2892  **/
2893 void
__lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba * phba)2894 __lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
2895 {
2896 	/* Clear pending FCF rediscovery wait flag */
2897 	phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
2898 
2899 	/* Now, try to stop the timer */
2900 	del_timer(&phba->fcf.redisc_wait);
2901 }
2902 
2903 /**
2904  * lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
2905  * @phba: pointer to lpfc hba data structure.
2906  *
2907  * This routine stops the SLI4 FCF rediscover wait timer if it's on. It
2908  * checks whether the FCF rediscovery wait timer is pending with the host
2909  * lock held before proceeding with disabling the timer and clearing the
2910  * wait timer pendig flag.
2911  **/
2912 void
lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba * phba)2913 lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
2914 {
2915 	spin_lock_irq(&phba->hbalock);
2916 	if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
2917 		/* FCF rediscovery timer already fired or stopped */
2918 		spin_unlock_irq(&phba->hbalock);
2919 		return;
2920 	}
2921 	__lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
2922 	/* Clear failover in progress flags */
2923 	phba->fcf.fcf_flag &= ~(FCF_DEAD_DISC | FCF_ACVL_DISC);
2924 	spin_unlock_irq(&phba->hbalock);
2925 }
2926 
2927 /**
2928  * lpfc_stop_hba_timers - Stop all the timers associated with an HBA
2929  * @phba: pointer to lpfc hba data structure.
2930  *
2931  * This routine stops all the timers associated with a HBA. This function is
2932  * invoked before either putting a HBA offline or unloading the driver.
2933  **/
2934 void
lpfc_stop_hba_timers(struct lpfc_hba * phba)2935 lpfc_stop_hba_timers(struct lpfc_hba *phba)
2936 {
2937 	if (phba->pport)
2938 		lpfc_stop_vport_timers(phba->pport);
2939 	cancel_delayed_work_sync(&phba->eq_delay_work);
2940 	del_timer_sync(&phba->sli.mbox_tmo);
2941 	del_timer_sync(&phba->fabric_block_timer);
2942 	del_timer_sync(&phba->eratt_poll);
2943 	del_timer_sync(&phba->hb_tmofunc);
2944 	if (phba->sli_rev == LPFC_SLI_REV4) {
2945 		del_timer_sync(&phba->rrq_tmr);
2946 		phba->hba_flag &= ~HBA_RRQ_ACTIVE;
2947 	}
2948 	phba->hb_outstanding = 0;
2949 
2950 	switch (phba->pci_dev_grp) {
2951 	case LPFC_PCI_DEV_LP:
2952 		/* Stop any LightPulse device specific driver timers */
2953 		del_timer_sync(&phba->fcp_poll_timer);
2954 		break;
2955 	case LPFC_PCI_DEV_OC:
2956 		/* Stop any OneConnect device specific driver timers */
2957 		lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
2958 		break;
2959 	default:
2960 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2961 				"0297 Invalid device group (x%x)\n",
2962 				phba->pci_dev_grp);
2963 		break;
2964 	}
2965 	return;
2966 }
2967 
2968 /**
2969  * lpfc_block_mgmt_io - Mark a HBA's management interface as blocked
2970  * @phba: pointer to lpfc hba data structure.
2971  *
2972  * This routine marks a HBA's management interface as blocked. Once the HBA's
2973  * management interface is marked as blocked, all the user space access to
2974  * the HBA, whether they are from sysfs interface or libdfc interface will
2975  * all be blocked. The HBA is set to block the management interface when the
2976  * driver prepares the HBA interface for online or offline.
2977  **/
2978 static void
lpfc_block_mgmt_io(struct lpfc_hba * phba,int mbx_action)2979 lpfc_block_mgmt_io(struct lpfc_hba *phba, int mbx_action)
2980 {
2981 	unsigned long iflag;
2982 	uint8_t actcmd = MBX_HEARTBEAT;
2983 	unsigned long timeout;
2984 
2985 	spin_lock_irqsave(&phba->hbalock, iflag);
2986 	phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO;
2987 	spin_unlock_irqrestore(&phba->hbalock, iflag);
2988 	if (mbx_action == LPFC_MBX_NO_WAIT)
2989 		return;
2990 	timeout = msecs_to_jiffies(LPFC_MBOX_TMO * 1000) + jiffies;
2991 	spin_lock_irqsave(&phba->hbalock, iflag);
2992 	if (phba->sli.mbox_active) {
2993 		actcmd = phba->sli.mbox_active->u.mb.mbxCommand;
2994 		/* Determine how long we might wait for the active mailbox
2995 		 * command to be gracefully completed by firmware.
2996 		 */
2997 		timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba,
2998 				phba->sli.mbox_active) * 1000) + jiffies;
2999 	}
3000 	spin_unlock_irqrestore(&phba->hbalock, iflag);
3001 
3002 	/* Wait for the outstnading mailbox command to complete */
3003 	while (phba->sli.mbox_active) {
3004 		/* Check active mailbox complete status every 2ms */
3005 		msleep(2);
3006 		if (time_after(jiffies, timeout)) {
3007 			lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3008 				"2813 Mgmt IO is Blocked %x "
3009 				"- mbox cmd %x still active\n",
3010 				phba->sli.sli_flag, actcmd);
3011 			break;
3012 		}
3013 	}
3014 }
3015 
3016 /**
3017  * lpfc_sli4_node_prep - Assign RPIs for active nodes.
3018  * @phba: pointer to lpfc hba data structure.
3019  *
3020  * Allocate RPIs for all active remote nodes. This is needed whenever
3021  * an SLI4 adapter is reset and the driver is not unloading. Its purpose
3022  * is to fixup the temporary rpi assignments.
3023  **/
3024 void
lpfc_sli4_node_prep(struct lpfc_hba * phba)3025 lpfc_sli4_node_prep(struct lpfc_hba *phba)
3026 {
3027 	struct lpfc_nodelist  *ndlp, *next_ndlp;
3028 	struct lpfc_vport **vports;
3029 	int i, rpi;
3030 	unsigned long flags;
3031 
3032 	if (phba->sli_rev != LPFC_SLI_REV4)
3033 		return;
3034 
3035 	vports = lpfc_create_vport_work_array(phba);
3036 	if (vports == NULL)
3037 		return;
3038 
3039 	for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3040 		if (vports[i]->load_flag & FC_UNLOADING)
3041 			continue;
3042 
3043 		list_for_each_entry_safe(ndlp, next_ndlp,
3044 					 &vports[i]->fc_nodes,
3045 					 nlp_listp) {
3046 			if (!NLP_CHK_NODE_ACT(ndlp))
3047 				continue;
3048 			rpi = lpfc_sli4_alloc_rpi(phba);
3049 			if (rpi == LPFC_RPI_ALLOC_ERROR) {
3050 				spin_lock_irqsave(&phba->ndlp_lock, flags);
3051 				NLP_CLR_NODE_ACT(ndlp);
3052 				spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3053 				continue;
3054 			}
3055 			ndlp->nlp_rpi = rpi;
3056 			lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
3057 					 "0009 rpi:%x DID:%x "
3058 					 "flg:%x map:%x x%px\n", ndlp->nlp_rpi,
3059 					 ndlp->nlp_DID, ndlp->nlp_flag,
3060 					 ndlp->nlp_usg_map, ndlp);
3061 		}
3062 	}
3063 	lpfc_destroy_vport_work_array(phba, vports);
3064 }
3065 
3066 /**
3067  * lpfc_create_expedite_pool - create expedite pool
3068  * @phba: pointer to lpfc hba data structure.
3069  *
3070  * This routine moves a batch of XRIs from lpfc_io_buf_list_put of HWQ 0
3071  * to expedite pool. Mark them as expedite.
3072  **/
lpfc_create_expedite_pool(struct lpfc_hba * phba)3073 static void lpfc_create_expedite_pool(struct lpfc_hba *phba)
3074 {
3075 	struct lpfc_sli4_hdw_queue *qp;
3076 	struct lpfc_io_buf *lpfc_ncmd;
3077 	struct lpfc_io_buf *lpfc_ncmd_next;
3078 	struct lpfc_epd_pool *epd_pool;
3079 	unsigned long iflag;
3080 
3081 	epd_pool = &phba->epd_pool;
3082 	qp = &phba->sli4_hba.hdwq[0];
3083 
3084 	spin_lock_init(&epd_pool->lock);
3085 	spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3086 	spin_lock(&epd_pool->lock);
3087 	INIT_LIST_HEAD(&epd_pool->list);
3088 	list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3089 				 &qp->lpfc_io_buf_list_put, list) {
3090 		list_move_tail(&lpfc_ncmd->list, &epd_pool->list);
3091 		lpfc_ncmd->expedite = true;
3092 		qp->put_io_bufs--;
3093 		epd_pool->count++;
3094 		if (epd_pool->count >= XRI_BATCH)
3095 			break;
3096 	}
3097 	spin_unlock(&epd_pool->lock);
3098 	spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3099 }
3100 
3101 /**
3102  * lpfc_destroy_expedite_pool - destroy expedite pool
3103  * @phba: pointer to lpfc hba data structure.
3104  *
3105  * This routine returns XRIs from expedite pool to lpfc_io_buf_list_put
3106  * of HWQ 0. Clear the mark.
3107  **/
lpfc_destroy_expedite_pool(struct lpfc_hba * phba)3108 static void lpfc_destroy_expedite_pool(struct lpfc_hba *phba)
3109 {
3110 	struct lpfc_sli4_hdw_queue *qp;
3111 	struct lpfc_io_buf *lpfc_ncmd;
3112 	struct lpfc_io_buf *lpfc_ncmd_next;
3113 	struct lpfc_epd_pool *epd_pool;
3114 	unsigned long iflag;
3115 
3116 	epd_pool = &phba->epd_pool;
3117 	qp = &phba->sli4_hba.hdwq[0];
3118 
3119 	spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3120 	spin_lock(&epd_pool->lock);
3121 	list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3122 				 &epd_pool->list, list) {
3123 		list_move_tail(&lpfc_ncmd->list,
3124 			       &qp->lpfc_io_buf_list_put);
3125 		lpfc_ncmd->flags = false;
3126 		qp->put_io_bufs++;
3127 		epd_pool->count--;
3128 	}
3129 	spin_unlock(&epd_pool->lock);
3130 	spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3131 }
3132 
3133 /**
3134  * lpfc_create_multixri_pools - create multi-XRI pools
3135  * @phba: pointer to lpfc hba data structure.
3136  *
3137  * This routine initialize public, private per HWQ. Then, move XRIs from
3138  * lpfc_io_buf_list_put to public pool. High and low watermark are also
3139  * Initialized.
3140  **/
lpfc_create_multixri_pools(struct lpfc_hba * phba)3141 void lpfc_create_multixri_pools(struct lpfc_hba *phba)
3142 {
3143 	u32 i, j;
3144 	u32 hwq_count;
3145 	u32 count_per_hwq;
3146 	struct lpfc_io_buf *lpfc_ncmd;
3147 	struct lpfc_io_buf *lpfc_ncmd_next;
3148 	unsigned long iflag;
3149 	struct lpfc_sli4_hdw_queue *qp;
3150 	struct lpfc_multixri_pool *multixri_pool;
3151 	struct lpfc_pbl_pool *pbl_pool;
3152 	struct lpfc_pvt_pool *pvt_pool;
3153 
3154 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3155 			"1234 num_hdw_queue=%d num_present_cpu=%d common_xri_cnt=%d\n",
3156 			phba->cfg_hdw_queue, phba->sli4_hba.num_present_cpu,
3157 			phba->sli4_hba.io_xri_cnt);
3158 
3159 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
3160 		lpfc_create_expedite_pool(phba);
3161 
3162 	hwq_count = phba->cfg_hdw_queue;
3163 	count_per_hwq = phba->sli4_hba.io_xri_cnt / hwq_count;
3164 
3165 	for (i = 0; i < hwq_count; i++) {
3166 		multixri_pool = kzalloc(sizeof(*multixri_pool), GFP_KERNEL);
3167 
3168 		if (!multixri_pool) {
3169 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3170 					"1238 Failed to allocate memory for "
3171 					"multixri_pool\n");
3172 
3173 			if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
3174 				lpfc_destroy_expedite_pool(phba);
3175 
3176 			j = 0;
3177 			while (j < i) {
3178 				qp = &phba->sli4_hba.hdwq[j];
3179 				kfree(qp->p_multixri_pool);
3180 				j++;
3181 			}
3182 			phba->cfg_xri_rebalancing = 0;
3183 			return;
3184 		}
3185 
3186 		qp = &phba->sli4_hba.hdwq[i];
3187 		qp->p_multixri_pool = multixri_pool;
3188 
3189 		multixri_pool->xri_limit = count_per_hwq;
3190 		multixri_pool->rrb_next_hwqid = i;
3191 
3192 		/* Deal with public free xri pool */
3193 		pbl_pool = &multixri_pool->pbl_pool;
3194 		spin_lock_init(&pbl_pool->lock);
3195 		spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3196 		spin_lock(&pbl_pool->lock);
3197 		INIT_LIST_HEAD(&pbl_pool->list);
3198 		list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3199 					 &qp->lpfc_io_buf_list_put, list) {
3200 			list_move_tail(&lpfc_ncmd->list, &pbl_pool->list);
3201 			qp->put_io_bufs--;
3202 			pbl_pool->count++;
3203 		}
3204 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3205 				"1235 Moved %d buffers from PUT list over to pbl_pool[%d]\n",
3206 				pbl_pool->count, i);
3207 		spin_unlock(&pbl_pool->lock);
3208 		spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3209 
3210 		/* Deal with private free xri pool */
3211 		pvt_pool = &multixri_pool->pvt_pool;
3212 		pvt_pool->high_watermark = multixri_pool->xri_limit / 2;
3213 		pvt_pool->low_watermark = XRI_BATCH;
3214 		spin_lock_init(&pvt_pool->lock);
3215 		spin_lock_irqsave(&pvt_pool->lock, iflag);
3216 		INIT_LIST_HEAD(&pvt_pool->list);
3217 		pvt_pool->count = 0;
3218 		spin_unlock_irqrestore(&pvt_pool->lock, iflag);
3219 	}
3220 }
3221 
3222 /**
3223  * lpfc_destroy_multixri_pools - destroy multi-XRI pools
3224  * @phba: pointer to lpfc hba data structure.
3225  *
3226  * This routine returns XRIs from public/private to lpfc_io_buf_list_put.
3227  **/
lpfc_destroy_multixri_pools(struct lpfc_hba * phba)3228 static void lpfc_destroy_multixri_pools(struct lpfc_hba *phba)
3229 {
3230 	u32 i;
3231 	u32 hwq_count;
3232 	struct lpfc_io_buf *lpfc_ncmd;
3233 	struct lpfc_io_buf *lpfc_ncmd_next;
3234 	unsigned long iflag;
3235 	struct lpfc_sli4_hdw_queue *qp;
3236 	struct lpfc_multixri_pool *multixri_pool;
3237 	struct lpfc_pbl_pool *pbl_pool;
3238 	struct lpfc_pvt_pool *pvt_pool;
3239 
3240 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
3241 		lpfc_destroy_expedite_pool(phba);
3242 
3243 	if (!(phba->pport->load_flag & FC_UNLOADING))
3244 		lpfc_sli_flush_io_rings(phba);
3245 
3246 	hwq_count = phba->cfg_hdw_queue;
3247 
3248 	for (i = 0; i < hwq_count; i++) {
3249 		qp = &phba->sli4_hba.hdwq[i];
3250 		multixri_pool = qp->p_multixri_pool;
3251 		if (!multixri_pool)
3252 			continue;
3253 
3254 		qp->p_multixri_pool = NULL;
3255 
3256 		spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3257 
3258 		/* Deal with public free xri pool */
3259 		pbl_pool = &multixri_pool->pbl_pool;
3260 		spin_lock(&pbl_pool->lock);
3261 
3262 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3263 				"1236 Moving %d buffers from pbl_pool[%d] TO PUT list\n",
3264 				pbl_pool->count, i);
3265 
3266 		list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3267 					 &pbl_pool->list, list) {
3268 			list_move_tail(&lpfc_ncmd->list,
3269 				       &qp->lpfc_io_buf_list_put);
3270 			qp->put_io_bufs++;
3271 			pbl_pool->count--;
3272 		}
3273 
3274 		INIT_LIST_HEAD(&pbl_pool->list);
3275 		pbl_pool->count = 0;
3276 
3277 		spin_unlock(&pbl_pool->lock);
3278 
3279 		/* Deal with private free xri pool */
3280 		pvt_pool = &multixri_pool->pvt_pool;
3281 		spin_lock(&pvt_pool->lock);
3282 
3283 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3284 				"1237 Moving %d buffers from pvt_pool[%d] TO PUT list\n",
3285 				pvt_pool->count, i);
3286 
3287 		list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3288 					 &pvt_pool->list, list) {
3289 			list_move_tail(&lpfc_ncmd->list,
3290 				       &qp->lpfc_io_buf_list_put);
3291 			qp->put_io_bufs++;
3292 			pvt_pool->count--;
3293 		}
3294 
3295 		INIT_LIST_HEAD(&pvt_pool->list);
3296 		pvt_pool->count = 0;
3297 
3298 		spin_unlock(&pvt_pool->lock);
3299 		spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3300 
3301 		kfree(multixri_pool);
3302 	}
3303 }
3304 
3305 /**
3306  * lpfc_online - Initialize and bring a HBA online
3307  * @phba: pointer to lpfc hba data structure.
3308  *
3309  * This routine initializes the HBA and brings a HBA online. During this
3310  * process, the management interface is blocked to prevent user space access
3311  * to the HBA interfering with the driver initialization.
3312  *
3313  * Return codes
3314  *   0 - successful
3315  *   1 - failed
3316  **/
3317 int
lpfc_online(struct lpfc_hba * phba)3318 lpfc_online(struct lpfc_hba *phba)
3319 {
3320 	struct lpfc_vport *vport;
3321 	struct lpfc_vport **vports;
3322 	int i, error = 0;
3323 	bool vpis_cleared = false;
3324 
3325 	if (!phba)
3326 		return 0;
3327 	vport = phba->pport;
3328 
3329 	if (!(vport->fc_flag & FC_OFFLINE_MODE))
3330 		return 0;
3331 
3332 	lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3333 			"0458 Bring Adapter online\n");
3334 
3335 	lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT);
3336 
3337 	if (phba->sli_rev == LPFC_SLI_REV4) {
3338 		if (lpfc_sli4_hba_setup(phba)) { /* Initialize SLI4 HBA */
3339 			lpfc_unblock_mgmt_io(phba);
3340 			return 1;
3341 		}
3342 		spin_lock_irq(&phba->hbalock);
3343 		if (!phba->sli4_hba.max_cfg_param.vpi_used)
3344 			vpis_cleared = true;
3345 		spin_unlock_irq(&phba->hbalock);
3346 
3347 		/* Reestablish the local initiator port.
3348 		 * The offline process destroyed the previous lport.
3349 		 */
3350 		if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME &&
3351 				!phba->nvmet_support) {
3352 			error = lpfc_nvme_create_localport(phba->pport);
3353 			if (error)
3354 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3355 					"6132 NVME restore reg failed "
3356 					"on nvmei error x%x\n", error);
3357 		}
3358 	} else {
3359 		lpfc_sli_queue_init(phba);
3360 		if (lpfc_sli_hba_setup(phba)) {	/* Initialize SLI2/SLI3 HBA */
3361 			lpfc_unblock_mgmt_io(phba);
3362 			return 1;
3363 		}
3364 	}
3365 
3366 	vports = lpfc_create_vport_work_array(phba);
3367 	if (vports != NULL) {
3368 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3369 			struct Scsi_Host *shost;
3370 			shost = lpfc_shost_from_vport(vports[i]);
3371 			spin_lock_irq(shost->host_lock);
3372 			vports[i]->fc_flag &= ~FC_OFFLINE_MODE;
3373 			if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
3374 				vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3375 			if (phba->sli_rev == LPFC_SLI_REV4) {
3376 				vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
3377 				if ((vpis_cleared) &&
3378 				    (vports[i]->port_type !=
3379 					LPFC_PHYSICAL_PORT))
3380 					vports[i]->vpi = 0;
3381 			}
3382 			spin_unlock_irq(shost->host_lock);
3383 		}
3384 	}
3385 	lpfc_destroy_vport_work_array(phba, vports);
3386 
3387 	if (phba->cfg_xri_rebalancing)
3388 		lpfc_create_multixri_pools(phba);
3389 
3390 	lpfc_unblock_mgmt_io(phba);
3391 	return 0;
3392 }
3393 
3394 /**
3395  * lpfc_unblock_mgmt_io - Mark a HBA's management interface to be not blocked
3396  * @phba: pointer to lpfc hba data structure.
3397  *
3398  * This routine marks a HBA's management interface as not blocked. Once the
3399  * HBA's management interface is marked as not blocked, all the user space
3400  * access to the HBA, whether they are from sysfs interface or libdfc
3401  * interface will be allowed. The HBA is set to block the management interface
3402  * when the driver prepares the HBA interface for online or offline and then
3403  * set to unblock the management interface afterwards.
3404  **/
3405 void
lpfc_unblock_mgmt_io(struct lpfc_hba * phba)3406 lpfc_unblock_mgmt_io(struct lpfc_hba * phba)
3407 {
3408 	unsigned long iflag;
3409 
3410 	spin_lock_irqsave(&phba->hbalock, iflag);
3411 	phba->sli.sli_flag &= ~LPFC_BLOCK_MGMT_IO;
3412 	spin_unlock_irqrestore(&phba->hbalock, iflag);
3413 }
3414 
3415 /**
3416  * lpfc_offline_prep - Prepare a HBA to be brought offline
3417  * @phba: pointer to lpfc hba data structure.
3418  *
3419  * This routine is invoked to prepare a HBA to be brought offline. It performs
3420  * unregistration login to all the nodes on all vports and flushes the mailbox
3421  * queue to make it ready to be brought offline.
3422  **/
3423 void
lpfc_offline_prep(struct lpfc_hba * phba,int mbx_action)3424 lpfc_offline_prep(struct lpfc_hba *phba, int mbx_action)
3425 {
3426 	struct lpfc_vport *vport = phba->pport;
3427 	struct lpfc_nodelist  *ndlp, *next_ndlp;
3428 	struct lpfc_vport **vports;
3429 	struct Scsi_Host *shost;
3430 	int i;
3431 
3432 	if (vport->fc_flag & FC_OFFLINE_MODE)
3433 		return;
3434 
3435 	lpfc_block_mgmt_io(phba, mbx_action);
3436 
3437 	lpfc_linkdown(phba);
3438 
3439 	/* Issue an unreg_login to all nodes on all vports */
3440 	vports = lpfc_create_vport_work_array(phba);
3441 	if (vports != NULL) {
3442 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3443 			if (vports[i]->load_flag & FC_UNLOADING)
3444 				continue;
3445 			shost = lpfc_shost_from_vport(vports[i]);
3446 			spin_lock_irq(shost->host_lock);
3447 			vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
3448 			vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3449 			vports[i]->fc_flag &= ~FC_VFI_REGISTERED;
3450 			spin_unlock_irq(shost->host_lock);
3451 
3452 			shost =	lpfc_shost_from_vport(vports[i]);
3453 			list_for_each_entry_safe(ndlp, next_ndlp,
3454 						 &vports[i]->fc_nodes,
3455 						 nlp_listp) {
3456 				if (!NLP_CHK_NODE_ACT(ndlp))
3457 					continue;
3458 				if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
3459 					continue;
3460 				if (ndlp->nlp_type & NLP_FABRIC) {
3461 					lpfc_disc_state_machine(vports[i], ndlp,
3462 						NULL, NLP_EVT_DEVICE_RECOVERY);
3463 					lpfc_disc_state_machine(vports[i], ndlp,
3464 						NULL, NLP_EVT_DEVICE_RM);
3465 				}
3466 				spin_lock_irq(shost->host_lock);
3467 				ndlp->nlp_flag &= ~NLP_NPR_ADISC;
3468 				spin_unlock_irq(shost->host_lock);
3469 				/*
3470 				 * Whenever an SLI4 port goes offline, free the
3471 				 * RPI. Get a new RPI when the adapter port
3472 				 * comes back online.
3473 				 */
3474 				if (phba->sli_rev == LPFC_SLI_REV4) {
3475 					lpfc_printf_vlog(ndlp->vport,
3476 							 KERN_INFO, LOG_NODE,
3477 							 "0011 lpfc_offline: "
3478 							 "ndlp:x%px did %x "
3479 							 "usgmap:x%x rpi:%x\n",
3480 							 ndlp, ndlp->nlp_DID,
3481 							 ndlp->nlp_usg_map,
3482 							 ndlp->nlp_rpi);
3483 
3484 					lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi);
3485 				}
3486 				lpfc_unreg_rpi(vports[i], ndlp);
3487 			}
3488 		}
3489 	}
3490 	lpfc_destroy_vport_work_array(phba, vports);
3491 
3492 	lpfc_sli_mbox_sys_shutdown(phba, mbx_action);
3493 
3494 	if (phba->wq)
3495 		flush_workqueue(phba->wq);
3496 }
3497 
3498 /**
3499  * lpfc_offline - Bring a HBA offline
3500  * @phba: pointer to lpfc hba data structure.
3501  *
3502  * This routine actually brings a HBA offline. It stops all the timers
3503  * associated with the HBA, brings down the SLI layer, and eventually
3504  * marks the HBA as in offline state for the upper layer protocol.
3505  **/
3506 void
lpfc_offline(struct lpfc_hba * phba)3507 lpfc_offline(struct lpfc_hba *phba)
3508 {
3509 	struct Scsi_Host  *shost;
3510 	struct lpfc_vport **vports;
3511 	int i;
3512 
3513 	if (phba->pport->fc_flag & FC_OFFLINE_MODE)
3514 		return;
3515 
3516 	/* stop port and all timers associated with this hba */
3517 	lpfc_stop_port(phba);
3518 
3519 	/* Tear down the local and target port registrations.  The
3520 	 * nvme transports need to cleanup.
3521 	 */
3522 	lpfc_nvmet_destroy_targetport(phba);
3523 	lpfc_nvme_destroy_localport(phba->pport);
3524 
3525 	vports = lpfc_create_vport_work_array(phba);
3526 	if (vports != NULL)
3527 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
3528 			lpfc_stop_vport_timers(vports[i]);
3529 	lpfc_destroy_vport_work_array(phba, vports);
3530 	lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3531 			"0460 Bring Adapter offline\n");
3532 	/* Bring down the SLI Layer and cleanup.  The HBA is offline
3533 	   now.  */
3534 	lpfc_sli_hba_down(phba);
3535 	spin_lock_irq(&phba->hbalock);
3536 	phba->work_ha = 0;
3537 	spin_unlock_irq(&phba->hbalock);
3538 	vports = lpfc_create_vport_work_array(phba);
3539 	if (vports != NULL)
3540 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3541 			shost = lpfc_shost_from_vport(vports[i]);
3542 			spin_lock_irq(shost->host_lock);
3543 			vports[i]->work_port_events = 0;
3544 			vports[i]->fc_flag |= FC_OFFLINE_MODE;
3545 			spin_unlock_irq(shost->host_lock);
3546 		}
3547 	lpfc_destroy_vport_work_array(phba, vports);
3548 
3549 	if (phba->cfg_xri_rebalancing)
3550 		lpfc_destroy_multixri_pools(phba);
3551 }
3552 
3553 /**
3554  * lpfc_scsi_free - Free all the SCSI buffers and IOCBs from driver lists
3555  * @phba: pointer to lpfc hba data structure.
3556  *
3557  * This routine is to free all the SCSI buffers and IOCBs from the driver
3558  * list back to kernel. It is called from lpfc_pci_remove_one to free
3559  * the internal resources before the device is removed from the system.
3560  **/
3561 static void
lpfc_scsi_free(struct lpfc_hba * phba)3562 lpfc_scsi_free(struct lpfc_hba *phba)
3563 {
3564 	struct lpfc_io_buf *sb, *sb_next;
3565 
3566 	if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
3567 		return;
3568 
3569 	spin_lock_irq(&phba->hbalock);
3570 
3571 	/* Release all the lpfc_scsi_bufs maintained by this host. */
3572 
3573 	spin_lock(&phba->scsi_buf_list_put_lock);
3574 	list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list_put,
3575 				 list) {
3576 		list_del(&sb->list);
3577 		dma_pool_free(phba->lpfc_sg_dma_buf_pool, sb->data,
3578 			      sb->dma_handle);
3579 		kfree(sb);
3580 		phba->total_scsi_bufs--;
3581 	}
3582 	spin_unlock(&phba->scsi_buf_list_put_lock);
3583 
3584 	spin_lock(&phba->scsi_buf_list_get_lock);
3585 	list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list_get,
3586 				 list) {
3587 		list_del(&sb->list);
3588 		dma_pool_free(phba->lpfc_sg_dma_buf_pool, sb->data,
3589 			      sb->dma_handle);
3590 		kfree(sb);
3591 		phba->total_scsi_bufs--;
3592 	}
3593 	spin_unlock(&phba->scsi_buf_list_get_lock);
3594 	spin_unlock_irq(&phba->hbalock);
3595 }
3596 
3597 /**
3598  * lpfc_io_free - Free all the IO buffers and IOCBs from driver lists
3599  * @phba: pointer to lpfc hba data structure.
3600  *
3601  * This routine is to free all the IO buffers and IOCBs from the driver
3602  * list back to kernel. It is called from lpfc_pci_remove_one to free
3603  * the internal resources before the device is removed from the system.
3604  **/
3605 void
lpfc_io_free(struct lpfc_hba * phba)3606 lpfc_io_free(struct lpfc_hba *phba)
3607 {
3608 	struct lpfc_io_buf *lpfc_ncmd, *lpfc_ncmd_next;
3609 	struct lpfc_sli4_hdw_queue *qp;
3610 	int idx;
3611 
3612 	for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
3613 		qp = &phba->sli4_hba.hdwq[idx];
3614 		/* Release all the lpfc_nvme_bufs maintained by this host. */
3615 		spin_lock(&qp->io_buf_list_put_lock);
3616 		list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3617 					 &qp->lpfc_io_buf_list_put,
3618 					 list) {
3619 			list_del(&lpfc_ncmd->list);
3620 			qp->put_io_bufs--;
3621 			dma_pool_free(phba->lpfc_sg_dma_buf_pool,
3622 				      lpfc_ncmd->data, lpfc_ncmd->dma_handle);
3623 			if (phba->cfg_xpsgl && !phba->nvmet_support)
3624 				lpfc_put_sgl_per_hdwq(phba, lpfc_ncmd);
3625 			lpfc_put_cmd_rsp_buf_per_hdwq(phba, lpfc_ncmd);
3626 			kfree(lpfc_ncmd);
3627 			qp->total_io_bufs--;
3628 		}
3629 		spin_unlock(&qp->io_buf_list_put_lock);
3630 
3631 		spin_lock(&qp->io_buf_list_get_lock);
3632 		list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3633 					 &qp->lpfc_io_buf_list_get,
3634 					 list) {
3635 			list_del(&lpfc_ncmd->list);
3636 			qp->get_io_bufs--;
3637 			dma_pool_free(phba->lpfc_sg_dma_buf_pool,
3638 				      lpfc_ncmd->data, lpfc_ncmd->dma_handle);
3639 			if (phba->cfg_xpsgl && !phba->nvmet_support)
3640 				lpfc_put_sgl_per_hdwq(phba, lpfc_ncmd);
3641 			lpfc_put_cmd_rsp_buf_per_hdwq(phba, lpfc_ncmd);
3642 			kfree(lpfc_ncmd);
3643 			qp->total_io_bufs--;
3644 		}
3645 		spin_unlock(&qp->io_buf_list_get_lock);
3646 	}
3647 }
3648 
3649 /**
3650  * lpfc_sli4_els_sgl_update - update ELS xri-sgl sizing and mapping
3651  * @phba: pointer to lpfc hba data structure.
3652  *
3653  * This routine first calculates the sizes of the current els and allocated
3654  * scsi sgl lists, and then goes through all sgls to updates the physical
3655  * XRIs assigned due to port function reset. During port initialization, the
3656  * current els and allocated scsi sgl lists are 0s.
3657  *
3658  * Return codes
3659  *   0 - successful (for now, it always returns 0)
3660  **/
3661 int
lpfc_sli4_els_sgl_update(struct lpfc_hba * phba)3662 lpfc_sli4_els_sgl_update(struct lpfc_hba *phba)
3663 {
3664 	struct lpfc_sglq *sglq_entry = NULL, *sglq_entry_next = NULL;
3665 	uint16_t i, lxri, xri_cnt, els_xri_cnt;
3666 	LIST_HEAD(els_sgl_list);
3667 	int rc;
3668 
3669 	/*
3670 	 * update on pci function's els xri-sgl list
3671 	 */
3672 	els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
3673 
3674 	if (els_xri_cnt > phba->sli4_hba.els_xri_cnt) {
3675 		/* els xri-sgl expanded */
3676 		xri_cnt = els_xri_cnt - phba->sli4_hba.els_xri_cnt;
3677 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3678 				"3157 ELS xri-sgl count increased from "
3679 				"%d to %d\n", phba->sli4_hba.els_xri_cnt,
3680 				els_xri_cnt);
3681 		/* allocate the additional els sgls */
3682 		for (i = 0; i < xri_cnt; i++) {
3683 			sglq_entry = kzalloc(sizeof(struct lpfc_sglq),
3684 					     GFP_KERNEL);
3685 			if (sglq_entry == NULL) {
3686 				lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3687 						"2562 Failure to allocate an "
3688 						"ELS sgl entry:%d\n", i);
3689 				rc = -ENOMEM;
3690 				goto out_free_mem;
3691 			}
3692 			sglq_entry->buff_type = GEN_BUFF_TYPE;
3693 			sglq_entry->virt = lpfc_mbuf_alloc(phba, 0,
3694 							   &sglq_entry->phys);
3695 			if (sglq_entry->virt == NULL) {
3696 				kfree(sglq_entry);
3697 				lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3698 						"2563 Failure to allocate an "
3699 						"ELS mbuf:%d\n", i);
3700 				rc = -ENOMEM;
3701 				goto out_free_mem;
3702 			}
3703 			sglq_entry->sgl = sglq_entry->virt;
3704 			memset(sglq_entry->sgl, 0, LPFC_BPL_SIZE);
3705 			sglq_entry->state = SGL_FREED;
3706 			list_add_tail(&sglq_entry->list, &els_sgl_list);
3707 		}
3708 		spin_lock_irq(&phba->hbalock);
3709 		spin_lock(&phba->sli4_hba.sgl_list_lock);
3710 		list_splice_init(&els_sgl_list,
3711 				 &phba->sli4_hba.lpfc_els_sgl_list);
3712 		spin_unlock(&phba->sli4_hba.sgl_list_lock);
3713 		spin_unlock_irq(&phba->hbalock);
3714 	} else if (els_xri_cnt < phba->sli4_hba.els_xri_cnt) {
3715 		/* els xri-sgl shrinked */
3716 		xri_cnt = phba->sli4_hba.els_xri_cnt - els_xri_cnt;
3717 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3718 				"3158 ELS xri-sgl count decreased from "
3719 				"%d to %d\n", phba->sli4_hba.els_xri_cnt,
3720 				els_xri_cnt);
3721 		spin_lock_irq(&phba->hbalock);
3722 		spin_lock(&phba->sli4_hba.sgl_list_lock);
3723 		list_splice_init(&phba->sli4_hba.lpfc_els_sgl_list,
3724 				 &els_sgl_list);
3725 		/* release extra els sgls from list */
3726 		for (i = 0; i < xri_cnt; i++) {
3727 			list_remove_head(&els_sgl_list,
3728 					 sglq_entry, struct lpfc_sglq, list);
3729 			if (sglq_entry) {
3730 				__lpfc_mbuf_free(phba, sglq_entry->virt,
3731 						 sglq_entry->phys);
3732 				kfree(sglq_entry);
3733 			}
3734 		}
3735 		list_splice_init(&els_sgl_list,
3736 				 &phba->sli4_hba.lpfc_els_sgl_list);
3737 		spin_unlock(&phba->sli4_hba.sgl_list_lock);
3738 		spin_unlock_irq(&phba->hbalock);
3739 	} else
3740 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3741 				"3163 ELS xri-sgl count unchanged: %d\n",
3742 				els_xri_cnt);
3743 	phba->sli4_hba.els_xri_cnt = els_xri_cnt;
3744 
3745 	/* update xris to els sgls on the list */
3746 	sglq_entry = NULL;
3747 	sglq_entry_next = NULL;
3748 	list_for_each_entry_safe(sglq_entry, sglq_entry_next,
3749 				 &phba->sli4_hba.lpfc_els_sgl_list, list) {
3750 		lxri = lpfc_sli4_next_xritag(phba);
3751 		if (lxri == NO_XRI) {
3752 			lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3753 					"2400 Failed to allocate xri for "
3754 					"ELS sgl\n");
3755 			rc = -ENOMEM;
3756 			goto out_free_mem;
3757 		}
3758 		sglq_entry->sli4_lxritag = lxri;
3759 		sglq_entry->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
3760 	}
3761 	return 0;
3762 
3763 out_free_mem:
3764 	lpfc_free_els_sgl_list(phba);
3765 	return rc;
3766 }
3767 
3768 /**
3769  * lpfc_sli4_nvmet_sgl_update - update xri-sgl sizing and mapping
3770  * @phba: pointer to lpfc hba data structure.
3771  *
3772  * This routine first calculates the sizes of the current els and allocated
3773  * scsi sgl lists, and then goes through all sgls to updates the physical
3774  * XRIs assigned due to port function reset. During port initialization, the
3775  * current els and allocated scsi sgl lists are 0s.
3776  *
3777  * Return codes
3778  *   0 - successful (for now, it always returns 0)
3779  **/
3780 int
lpfc_sli4_nvmet_sgl_update(struct lpfc_hba * phba)3781 lpfc_sli4_nvmet_sgl_update(struct lpfc_hba *phba)
3782 {
3783 	struct lpfc_sglq *sglq_entry = NULL, *sglq_entry_next = NULL;
3784 	uint16_t i, lxri, xri_cnt, els_xri_cnt;
3785 	uint16_t nvmet_xri_cnt;
3786 	LIST_HEAD(nvmet_sgl_list);
3787 	int rc;
3788 
3789 	/*
3790 	 * update on pci function's nvmet xri-sgl list
3791 	 */
3792 	els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
3793 
3794 	/* For NVMET, ALL remaining XRIs are dedicated for IO processing */
3795 	nvmet_xri_cnt = phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;
3796 	if (nvmet_xri_cnt > phba->sli4_hba.nvmet_xri_cnt) {
3797 		/* els xri-sgl expanded */
3798 		xri_cnt = nvmet_xri_cnt - phba->sli4_hba.nvmet_xri_cnt;
3799 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3800 				"6302 NVMET xri-sgl cnt grew from %d to %d\n",
3801 				phba->sli4_hba.nvmet_xri_cnt, nvmet_xri_cnt);
3802 		/* allocate the additional nvmet sgls */
3803 		for (i = 0; i < xri_cnt; i++) {
3804 			sglq_entry = kzalloc(sizeof(struct lpfc_sglq),
3805 					     GFP_KERNEL);
3806 			if (sglq_entry == NULL) {
3807 				lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3808 						"6303 Failure to allocate an "
3809 						"NVMET sgl entry:%d\n", i);
3810 				rc = -ENOMEM;
3811 				goto out_free_mem;
3812 			}
3813 			sglq_entry->buff_type = NVMET_BUFF_TYPE;
3814 			sglq_entry->virt = lpfc_nvmet_buf_alloc(phba, 0,
3815 							   &sglq_entry->phys);
3816 			if (sglq_entry->virt == NULL) {
3817 				kfree(sglq_entry);
3818 				lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3819 						"6304 Failure to allocate an "
3820 						"NVMET buf:%d\n", i);
3821 				rc = -ENOMEM;
3822 				goto out_free_mem;
3823 			}
3824 			sglq_entry->sgl = sglq_entry->virt;
3825 			memset(sglq_entry->sgl, 0,
3826 			       phba->cfg_sg_dma_buf_size);
3827 			sglq_entry->state = SGL_FREED;
3828 			list_add_tail(&sglq_entry->list, &nvmet_sgl_list);
3829 		}
3830 		spin_lock_irq(&phba->hbalock);
3831 		spin_lock(&phba->sli4_hba.sgl_list_lock);
3832 		list_splice_init(&nvmet_sgl_list,
3833 				 &phba->sli4_hba.lpfc_nvmet_sgl_list);
3834 		spin_unlock(&phba->sli4_hba.sgl_list_lock);
3835 		spin_unlock_irq(&phba->hbalock);
3836 	} else if (nvmet_xri_cnt < phba->sli4_hba.nvmet_xri_cnt) {
3837 		/* nvmet xri-sgl shrunk */
3838 		xri_cnt = phba->sli4_hba.nvmet_xri_cnt - nvmet_xri_cnt;
3839 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3840 				"6305 NVMET xri-sgl count decreased from "
3841 				"%d to %d\n", phba->sli4_hba.nvmet_xri_cnt,
3842 				nvmet_xri_cnt);
3843 		spin_lock_irq(&phba->hbalock);
3844 		spin_lock(&phba->sli4_hba.sgl_list_lock);
3845 		list_splice_init(&phba->sli4_hba.lpfc_nvmet_sgl_list,
3846 				 &nvmet_sgl_list);
3847 		/* release extra nvmet sgls from list */
3848 		for (i = 0; i < xri_cnt; i++) {
3849 			list_remove_head(&nvmet_sgl_list,
3850 					 sglq_entry, struct lpfc_sglq, list);
3851 			if (sglq_entry) {
3852 				lpfc_nvmet_buf_free(phba, sglq_entry->virt,
3853 						    sglq_entry->phys);
3854 				kfree(sglq_entry);
3855 			}
3856 		}
3857 		list_splice_init(&nvmet_sgl_list,
3858 				 &phba->sli4_hba.lpfc_nvmet_sgl_list);
3859 		spin_unlock(&phba->sli4_hba.sgl_list_lock);
3860 		spin_unlock_irq(&phba->hbalock);
3861 	} else
3862 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3863 				"6306 NVMET xri-sgl count unchanged: %d\n",
3864 				nvmet_xri_cnt);
3865 	phba->sli4_hba.nvmet_xri_cnt = nvmet_xri_cnt;
3866 
3867 	/* update xris to nvmet sgls on the list */
3868 	sglq_entry = NULL;
3869 	sglq_entry_next = NULL;
3870 	list_for_each_entry_safe(sglq_entry, sglq_entry_next,
3871 				 &phba->sli4_hba.lpfc_nvmet_sgl_list, list) {
3872 		lxri = lpfc_sli4_next_xritag(phba);
3873 		if (lxri == NO_XRI) {
3874 			lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3875 					"6307 Failed to allocate xri for "
3876 					"NVMET sgl\n");
3877 			rc = -ENOMEM;
3878 			goto out_free_mem;
3879 		}
3880 		sglq_entry->sli4_lxritag = lxri;
3881 		sglq_entry->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
3882 	}
3883 	return 0;
3884 
3885 out_free_mem:
3886 	lpfc_free_nvmet_sgl_list(phba);
3887 	return rc;
3888 }
3889 
3890 int
lpfc_io_buf_flush(struct lpfc_hba * phba,struct list_head * cbuf)3891 lpfc_io_buf_flush(struct lpfc_hba *phba, struct list_head *cbuf)
3892 {
3893 	LIST_HEAD(blist);
3894 	struct lpfc_sli4_hdw_queue *qp;
3895 	struct lpfc_io_buf *lpfc_cmd;
3896 	struct lpfc_io_buf *iobufp, *prev_iobufp;
3897 	int idx, cnt, xri, inserted;
3898 
3899 	cnt = 0;
3900 	for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
3901 		qp = &phba->sli4_hba.hdwq[idx];
3902 		spin_lock_irq(&qp->io_buf_list_get_lock);
3903 		spin_lock(&qp->io_buf_list_put_lock);
3904 
3905 		/* Take everything off the get and put lists */
3906 		list_splice_init(&qp->lpfc_io_buf_list_get, &blist);
3907 		list_splice(&qp->lpfc_io_buf_list_put, &blist);
3908 		INIT_LIST_HEAD(&qp->lpfc_io_buf_list_get);
3909 		INIT_LIST_HEAD(&qp->lpfc_io_buf_list_put);
3910 		cnt += qp->get_io_bufs + qp->put_io_bufs;
3911 		qp->get_io_bufs = 0;
3912 		qp->put_io_bufs = 0;
3913 		qp->total_io_bufs = 0;
3914 		spin_unlock(&qp->io_buf_list_put_lock);
3915 		spin_unlock_irq(&qp->io_buf_list_get_lock);
3916 	}
3917 
3918 	/*
3919 	 * Take IO buffers off blist and put on cbuf sorted by XRI.
3920 	 * This is because POST_SGL takes a sequential range of XRIs
3921 	 * to post to the firmware.
3922 	 */
3923 	for (idx = 0; idx < cnt; idx++) {
3924 		list_remove_head(&blist, lpfc_cmd, struct lpfc_io_buf, list);
3925 		if (!lpfc_cmd)
3926 			return cnt;
3927 		if (idx == 0) {
3928 			list_add_tail(&lpfc_cmd->list, cbuf);
3929 			continue;
3930 		}
3931 		xri = lpfc_cmd->cur_iocbq.sli4_xritag;
3932 		inserted = 0;
3933 		prev_iobufp = NULL;
3934 		list_for_each_entry(iobufp, cbuf, list) {
3935 			if (xri < iobufp->cur_iocbq.sli4_xritag) {
3936 				if (prev_iobufp)
3937 					list_add(&lpfc_cmd->list,
3938 						 &prev_iobufp->list);
3939 				else
3940 					list_add(&lpfc_cmd->list, cbuf);
3941 				inserted = 1;
3942 				break;
3943 			}
3944 			prev_iobufp = iobufp;
3945 		}
3946 		if (!inserted)
3947 			list_add_tail(&lpfc_cmd->list, cbuf);
3948 	}
3949 	return cnt;
3950 }
3951 
3952 int
lpfc_io_buf_replenish(struct lpfc_hba * phba,struct list_head * cbuf)3953 lpfc_io_buf_replenish(struct lpfc_hba *phba, struct list_head *cbuf)
3954 {
3955 	struct lpfc_sli4_hdw_queue *qp;
3956 	struct lpfc_io_buf *lpfc_cmd;
3957 	int idx, cnt;
3958 
3959 	qp = phba->sli4_hba.hdwq;
3960 	cnt = 0;
3961 	while (!list_empty(cbuf)) {
3962 		for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
3963 			list_remove_head(cbuf, lpfc_cmd,
3964 					 struct lpfc_io_buf, list);
3965 			if (!lpfc_cmd)
3966 				return cnt;
3967 			cnt++;
3968 			qp = &phba->sli4_hba.hdwq[idx];
3969 			lpfc_cmd->hdwq_no = idx;
3970 			lpfc_cmd->hdwq = qp;
3971 			lpfc_cmd->cur_iocbq.wqe_cmpl = NULL;
3972 			lpfc_cmd->cur_iocbq.iocb_cmpl = NULL;
3973 			spin_lock(&qp->io_buf_list_put_lock);
3974 			list_add_tail(&lpfc_cmd->list,
3975 				      &qp->lpfc_io_buf_list_put);
3976 			qp->put_io_bufs++;
3977 			qp->total_io_bufs++;
3978 			spin_unlock(&qp->io_buf_list_put_lock);
3979 		}
3980 	}
3981 	return cnt;
3982 }
3983 
3984 /**
3985  * lpfc_sli4_io_sgl_update - update xri-sgl sizing and mapping
3986  * @phba: pointer to lpfc hba data structure.
3987  *
3988  * This routine first calculates the sizes of the current els and allocated
3989  * scsi sgl lists, and then goes through all sgls to updates the physical
3990  * XRIs assigned due to port function reset. During port initialization, the
3991  * current els and allocated scsi sgl lists are 0s.
3992  *
3993  * Return codes
3994  *   0 - successful (for now, it always returns 0)
3995  **/
3996 int
lpfc_sli4_io_sgl_update(struct lpfc_hba * phba)3997 lpfc_sli4_io_sgl_update(struct lpfc_hba *phba)
3998 {
3999 	struct lpfc_io_buf *lpfc_ncmd = NULL, *lpfc_ncmd_next = NULL;
4000 	uint16_t i, lxri, els_xri_cnt;
4001 	uint16_t io_xri_cnt, io_xri_max;
4002 	LIST_HEAD(io_sgl_list);
4003 	int rc, cnt;
4004 
4005 	/*
4006 	 * update on pci function's allocated nvme xri-sgl list
4007 	 */
4008 
4009 	/* maximum number of xris available for nvme buffers */
4010 	els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
4011 	io_xri_max = phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;
4012 	phba->sli4_hba.io_xri_max = io_xri_max;
4013 
4014 	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4015 			"6074 Current allocated XRI sgl count:%d, "
4016 			"maximum XRI count:%d\n",
4017 			phba->sli4_hba.io_xri_cnt,
4018 			phba->sli4_hba.io_xri_max);
4019 
4020 	cnt = lpfc_io_buf_flush(phba, &io_sgl_list);
4021 
4022 	if (phba->sli4_hba.io_xri_cnt > phba->sli4_hba.io_xri_max) {
4023 		/* max nvme xri shrunk below the allocated nvme buffers */
4024 		io_xri_cnt = phba->sli4_hba.io_xri_cnt -
4025 					phba->sli4_hba.io_xri_max;
4026 		/* release the extra allocated nvme buffers */
4027 		for (i = 0; i < io_xri_cnt; i++) {
4028 			list_remove_head(&io_sgl_list, lpfc_ncmd,
4029 					 struct lpfc_io_buf, list);
4030 			if (lpfc_ncmd) {
4031 				dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4032 					      lpfc_ncmd->data,
4033 					      lpfc_ncmd->dma_handle);
4034 				kfree(lpfc_ncmd);
4035 			}
4036 		}
4037 		phba->sli4_hba.io_xri_cnt -= io_xri_cnt;
4038 	}
4039 
4040 	/* update xris associated to remaining allocated nvme buffers */
4041 	lpfc_ncmd = NULL;
4042 	lpfc_ncmd_next = NULL;
4043 	phba->sli4_hba.io_xri_cnt = cnt;
4044 	list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
4045 				 &io_sgl_list, list) {
4046 		lxri = lpfc_sli4_next_xritag(phba);
4047 		if (lxri == NO_XRI) {
4048 			lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4049 					"6075 Failed to allocate xri for "
4050 					"nvme buffer\n");
4051 			rc = -ENOMEM;
4052 			goto out_free_mem;
4053 		}
4054 		lpfc_ncmd->cur_iocbq.sli4_lxritag = lxri;
4055 		lpfc_ncmd->cur_iocbq.sli4_xritag = phba->sli4_hba.xri_ids[lxri];
4056 	}
4057 	cnt = lpfc_io_buf_replenish(phba, &io_sgl_list);
4058 	return 0;
4059 
4060 out_free_mem:
4061 	lpfc_io_free(phba);
4062 	return rc;
4063 }
4064 
4065 /**
4066  * lpfc_new_io_buf - IO buffer allocator for HBA with SLI4 IF spec
4067  * @vport: The virtual port for which this call being executed.
4068  * @num_to_allocate: The requested number of buffers to allocate.
4069  *
4070  * This routine allocates nvme buffers for device with SLI-4 interface spec,
4071  * the nvme buffer contains all the necessary information needed to initiate
4072  * an I/O. After allocating up to @num_to_allocate IO buffers and put
4073  * them on a list, it post them to the port by using SGL block post.
4074  *
4075  * Return codes:
4076  *   int - number of IO buffers that were allocated and posted.
4077  *   0 = failure, less than num_to_alloc is a partial failure.
4078  **/
4079 int
lpfc_new_io_buf(struct lpfc_hba * phba,int num_to_alloc)4080 lpfc_new_io_buf(struct lpfc_hba *phba, int num_to_alloc)
4081 {
4082 	struct lpfc_io_buf *lpfc_ncmd;
4083 	struct lpfc_iocbq *pwqeq;
4084 	uint16_t iotag, lxri = 0;
4085 	int bcnt, num_posted;
4086 	LIST_HEAD(prep_nblist);
4087 	LIST_HEAD(post_nblist);
4088 	LIST_HEAD(nvme_nblist);
4089 
4090 	phba->sli4_hba.io_xri_cnt = 0;
4091 	for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
4092 		lpfc_ncmd = kzalloc(sizeof(*lpfc_ncmd), GFP_KERNEL);
4093 		if (!lpfc_ncmd)
4094 			break;
4095 		/*
4096 		 * Get memory from the pci pool to map the virt space to
4097 		 * pci bus space for an I/O. The DMA buffer includes the
4098 		 * number of SGE's necessary to support the sg_tablesize.
4099 		 */
4100 		lpfc_ncmd->data = dma_pool_zalloc(phba->lpfc_sg_dma_buf_pool,
4101 						  GFP_KERNEL,
4102 						  &lpfc_ncmd->dma_handle);
4103 		if (!lpfc_ncmd->data) {
4104 			kfree(lpfc_ncmd);
4105 			break;
4106 		}
4107 
4108 		if (phba->cfg_xpsgl && !phba->nvmet_support) {
4109 			INIT_LIST_HEAD(&lpfc_ncmd->dma_sgl_xtra_list);
4110 		} else {
4111 			/*
4112 			 * 4K Page alignment is CRITICAL to BlockGuard, double
4113 			 * check to be sure.
4114 			 */
4115 			if ((phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
4116 			    (((unsigned long)(lpfc_ncmd->data) &
4117 			    (unsigned long)(SLI4_PAGE_SIZE - 1)) != 0)) {
4118 				lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
4119 						"3369 Memory alignment err: "
4120 						"addr=%lx\n",
4121 						(unsigned long)lpfc_ncmd->data);
4122 				dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4123 					      lpfc_ncmd->data,
4124 					      lpfc_ncmd->dma_handle);
4125 				kfree(lpfc_ncmd);
4126 				break;
4127 			}
4128 		}
4129 
4130 		INIT_LIST_HEAD(&lpfc_ncmd->dma_cmd_rsp_list);
4131 
4132 		lxri = lpfc_sli4_next_xritag(phba);
4133 		if (lxri == NO_XRI) {
4134 			dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4135 				      lpfc_ncmd->data, lpfc_ncmd->dma_handle);
4136 			kfree(lpfc_ncmd);
4137 			break;
4138 		}
4139 		pwqeq = &lpfc_ncmd->cur_iocbq;
4140 
4141 		/* Allocate iotag for lpfc_ncmd->cur_iocbq. */
4142 		iotag = lpfc_sli_next_iotag(phba, pwqeq);
4143 		if (iotag == 0) {
4144 			dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4145 				      lpfc_ncmd->data, lpfc_ncmd->dma_handle);
4146 			kfree(lpfc_ncmd);
4147 			lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
4148 					"6121 Failed to allocate IOTAG for"
4149 					" XRI:0x%x\n", lxri);
4150 			lpfc_sli4_free_xri(phba, lxri);
4151 			break;
4152 		}
4153 		pwqeq->sli4_lxritag = lxri;
4154 		pwqeq->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
4155 		pwqeq->context1 = lpfc_ncmd;
4156 
4157 		/* Initialize local short-hand pointers. */
4158 		lpfc_ncmd->dma_sgl = lpfc_ncmd->data;
4159 		lpfc_ncmd->dma_phys_sgl = lpfc_ncmd->dma_handle;
4160 		lpfc_ncmd->cur_iocbq.context1 = lpfc_ncmd;
4161 		spin_lock_init(&lpfc_ncmd->buf_lock);
4162 
4163 		/* add the nvme buffer to a post list */
4164 		list_add_tail(&lpfc_ncmd->list, &post_nblist);
4165 		phba->sli4_hba.io_xri_cnt++;
4166 	}
4167 	lpfc_printf_log(phba, KERN_INFO, LOG_NVME,
4168 			"6114 Allocate %d out of %d requested new NVME "
4169 			"buffers\n", bcnt, num_to_alloc);
4170 
4171 	/* post the list of nvme buffer sgls to port if available */
4172 	if (!list_empty(&post_nblist))
4173 		num_posted = lpfc_sli4_post_io_sgl_list(
4174 				phba, &post_nblist, bcnt);
4175 	else
4176 		num_posted = 0;
4177 
4178 	return num_posted;
4179 }
4180 
4181 static uint64_t
lpfc_get_wwpn(struct lpfc_hba * phba)4182 lpfc_get_wwpn(struct lpfc_hba *phba)
4183 {
4184 	uint64_t wwn;
4185 	int rc;
4186 	LPFC_MBOXQ_t *mboxq;
4187 	MAILBOX_t *mb;
4188 
4189 	mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
4190 						GFP_KERNEL);
4191 	if (!mboxq)
4192 		return (uint64_t)-1;
4193 
4194 	/* First get WWN of HBA instance */
4195 	lpfc_read_nv(phba, mboxq);
4196 	rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
4197 	if (rc != MBX_SUCCESS) {
4198 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4199 				"6019 Mailbox failed , mbxCmd x%x "
4200 				"READ_NV, mbxStatus x%x\n",
4201 				bf_get(lpfc_mqe_command, &mboxq->u.mqe),
4202 				bf_get(lpfc_mqe_status, &mboxq->u.mqe));
4203 		mempool_free(mboxq, phba->mbox_mem_pool);
4204 		return (uint64_t) -1;
4205 	}
4206 	mb = &mboxq->u.mb;
4207 	memcpy(&wwn, (char *)mb->un.varRDnvp.portname, sizeof(uint64_t));
4208 	/* wwn is WWPN of HBA instance */
4209 	mempool_free(mboxq, phba->mbox_mem_pool);
4210 	if (phba->sli_rev == LPFC_SLI_REV4)
4211 		return be64_to_cpu(wwn);
4212 	else
4213 		return rol64(wwn, 32);
4214 }
4215 
4216 /**
4217  * lpfc_create_port - Create an FC port
4218  * @phba: pointer to lpfc hba data structure.
4219  * @instance: a unique integer ID to this FC port.
4220  * @dev: pointer to the device data structure.
4221  *
4222  * This routine creates a FC port for the upper layer protocol. The FC port
4223  * can be created on top of either a physical port or a virtual port provided
4224  * by the HBA. This routine also allocates a SCSI host data structure (shost)
4225  * and associates the FC port created before adding the shost into the SCSI
4226  * layer.
4227  *
4228  * Return codes
4229  *   @vport - pointer to the virtual N_Port data structure.
4230  *   NULL - port create failed.
4231  **/
4232 struct lpfc_vport *
lpfc_create_port(struct lpfc_hba * phba,int instance,struct device * dev)4233 lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev)
4234 {
4235 	struct lpfc_vport *vport;
4236 	struct Scsi_Host  *shost = NULL;
4237 	int error = 0;
4238 	int i;
4239 	uint64_t wwn;
4240 	bool use_no_reset_hba = false;
4241 	int rc;
4242 
4243 	if (lpfc_no_hba_reset_cnt) {
4244 		if (phba->sli_rev < LPFC_SLI_REV4 &&
4245 		    dev == &phba->pcidev->dev) {
4246 			/* Reset the port first */
4247 			lpfc_sli_brdrestart(phba);
4248 			rc = lpfc_sli_chipset_init(phba);
4249 			if (rc)
4250 				return NULL;
4251 		}
4252 		wwn = lpfc_get_wwpn(phba);
4253 	}
4254 
4255 	for (i = 0; i < lpfc_no_hba_reset_cnt; i++) {
4256 		if (wwn == lpfc_no_hba_reset[i]) {
4257 			lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4258 					"6020 Setting use_no_reset port=%llx\n",
4259 					wwn);
4260 			use_no_reset_hba = true;
4261 			break;
4262 		}
4263 	}
4264 
4265 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) {
4266 		if (dev != &phba->pcidev->dev) {
4267 			shost = scsi_host_alloc(&lpfc_vport_template,
4268 						sizeof(struct lpfc_vport));
4269 		} else {
4270 			if (!use_no_reset_hba)
4271 				shost = scsi_host_alloc(&lpfc_template,
4272 						sizeof(struct lpfc_vport));
4273 			else
4274 				shost = scsi_host_alloc(&lpfc_template_no_hr,
4275 						sizeof(struct lpfc_vport));
4276 		}
4277 	} else if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
4278 		shost = scsi_host_alloc(&lpfc_template_nvme,
4279 					sizeof(struct lpfc_vport));
4280 	}
4281 	if (!shost)
4282 		goto out;
4283 
4284 	vport = (struct lpfc_vport *) shost->hostdata;
4285 	vport->phba = phba;
4286 	vport->load_flag |= FC_LOADING;
4287 	vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
4288 	vport->fc_rscn_flush = 0;
4289 	lpfc_get_vport_cfgparam(vport);
4290 
4291 	/* Adjust value in vport */
4292 	vport->cfg_enable_fc4_type = phba->cfg_enable_fc4_type;
4293 
4294 	shost->unique_id = instance;
4295 	shost->max_id = LPFC_MAX_TARGET;
4296 	shost->max_lun = vport->cfg_max_luns;
4297 	shost->this_id = -1;
4298 	shost->max_cmd_len = 16;
4299 
4300 	if (phba->sli_rev == LPFC_SLI_REV4) {
4301 		if (!phba->cfg_fcp_mq_threshold ||
4302 		    phba->cfg_fcp_mq_threshold > phba->cfg_hdw_queue)
4303 			phba->cfg_fcp_mq_threshold = phba->cfg_hdw_queue;
4304 
4305 		shost->nr_hw_queues = min_t(int, 2 * num_possible_nodes(),
4306 					    phba->cfg_fcp_mq_threshold);
4307 
4308 		shost->dma_boundary =
4309 			phba->sli4_hba.pc_sli4_params.sge_supp_len-1;
4310 
4311 		if (phba->cfg_xpsgl && !phba->nvmet_support)
4312 			shost->sg_tablesize = LPFC_MAX_SG_TABLESIZE;
4313 		else
4314 			shost->sg_tablesize = phba->cfg_scsi_seg_cnt;
4315 	} else
4316 		/* SLI-3 has a limited number of hardware queues (3),
4317 		 * thus there is only one for FCP processing.
4318 		 */
4319 		shost->nr_hw_queues = 1;
4320 
4321 	/*
4322 	 * Set initial can_queue value since 0 is no longer supported and
4323 	 * scsi_add_host will fail. This will be adjusted later based on the
4324 	 * max xri value determined in hba setup.
4325 	 */
4326 	shost->can_queue = phba->cfg_hba_queue_depth - 10;
4327 	if (dev != &phba->pcidev->dev) {
4328 		shost->transportt = lpfc_vport_transport_template;
4329 		vport->port_type = LPFC_NPIV_PORT;
4330 	} else {
4331 		shost->transportt = lpfc_transport_template;
4332 		vport->port_type = LPFC_PHYSICAL_PORT;
4333 	}
4334 
4335 	/* Initialize all internally managed lists. */
4336 	INIT_LIST_HEAD(&vport->fc_nodes);
4337 	INIT_LIST_HEAD(&vport->rcv_buffer_list);
4338 	spin_lock_init(&vport->work_port_lock);
4339 
4340 	timer_setup(&vport->fc_disctmo, lpfc_disc_timeout, 0);
4341 
4342 	timer_setup(&vport->els_tmofunc, lpfc_els_timeout, 0);
4343 
4344 	timer_setup(&vport->delayed_disc_tmo, lpfc_delayed_disc_tmo, 0);
4345 
4346 	if (phba->sli3_options & LPFC_SLI3_BG_ENABLED)
4347 		lpfc_setup_bg(phba, shost);
4348 
4349 	error = scsi_add_host_with_dma(shost, dev, &phba->pcidev->dev);
4350 	if (error)
4351 		goto out_put_shost;
4352 
4353 	spin_lock_irq(&phba->port_list_lock);
4354 	list_add_tail(&vport->listentry, &phba->port_list);
4355 	spin_unlock_irq(&phba->port_list_lock);
4356 	return vport;
4357 
4358 out_put_shost:
4359 	scsi_host_put(shost);
4360 out:
4361 	return NULL;
4362 }
4363 
4364 /**
4365  * destroy_port -  destroy an FC port
4366  * @vport: pointer to an lpfc virtual N_Port data structure.
4367  *
4368  * This routine destroys a FC port from the upper layer protocol. All the
4369  * resources associated with the port are released.
4370  **/
4371 void
destroy_port(struct lpfc_vport * vport)4372 destroy_port(struct lpfc_vport *vport)
4373 {
4374 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4375 	struct lpfc_hba  *phba = vport->phba;
4376 
4377 	lpfc_debugfs_terminate(vport);
4378 	fc_remove_host(shost);
4379 	scsi_remove_host(shost);
4380 
4381 	spin_lock_irq(&phba->port_list_lock);
4382 	list_del_init(&vport->listentry);
4383 	spin_unlock_irq(&phba->port_list_lock);
4384 
4385 	lpfc_cleanup(vport);
4386 	return;
4387 }
4388 
4389 /**
4390  * lpfc_get_instance - Get a unique integer ID
4391  *
4392  * This routine allocates a unique integer ID from lpfc_hba_index pool. It
4393  * uses the kernel idr facility to perform the task.
4394  *
4395  * Return codes:
4396  *   instance - a unique integer ID allocated as the new instance.
4397  *   -1 - lpfc get instance failed.
4398  **/
4399 int
lpfc_get_instance(void)4400 lpfc_get_instance(void)
4401 {
4402 	int ret;
4403 
4404 	ret = idr_alloc(&lpfc_hba_index, NULL, 0, 0, GFP_KERNEL);
4405 	return ret < 0 ? -1 : ret;
4406 }
4407 
4408 /**
4409  * lpfc_scan_finished - method for SCSI layer to detect whether scan is done
4410  * @shost: pointer to SCSI host data structure.
4411  * @time: elapsed time of the scan in jiffies.
4412  *
4413  * This routine is called by the SCSI layer with a SCSI host to determine
4414  * whether the scan host is finished.
4415  *
4416  * Note: there is no scan_start function as adapter initialization will have
4417  * asynchronously kicked off the link initialization.
4418  *
4419  * Return codes
4420  *   0 - SCSI host scan is not over yet.
4421  *   1 - SCSI host scan is over.
4422  **/
lpfc_scan_finished(struct Scsi_Host * shost,unsigned long time)4423 int lpfc_scan_finished(struct Scsi_Host *shost, unsigned long time)
4424 {
4425 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4426 	struct lpfc_hba   *phba = vport->phba;
4427 	int stat = 0;
4428 
4429 	spin_lock_irq(shost->host_lock);
4430 
4431 	if (vport->load_flag & FC_UNLOADING) {
4432 		stat = 1;
4433 		goto finished;
4434 	}
4435 	if (time >= msecs_to_jiffies(30 * 1000)) {
4436 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4437 				"0461 Scanning longer than 30 "
4438 				"seconds.  Continuing initialization\n");
4439 		stat = 1;
4440 		goto finished;
4441 	}
4442 	if (time >= msecs_to_jiffies(15 * 1000) &&
4443 	    phba->link_state <= LPFC_LINK_DOWN) {
4444 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4445 				"0465 Link down longer than 15 "
4446 				"seconds.  Continuing initialization\n");
4447 		stat = 1;
4448 		goto finished;
4449 	}
4450 
4451 	if (vport->port_state != LPFC_VPORT_READY)
4452 		goto finished;
4453 	if (vport->num_disc_nodes || vport->fc_prli_sent)
4454 		goto finished;
4455 	if (vport->fc_map_cnt == 0 && time < msecs_to_jiffies(2 * 1000))
4456 		goto finished;
4457 	if ((phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) != 0)
4458 		goto finished;
4459 
4460 	stat = 1;
4461 
4462 finished:
4463 	spin_unlock_irq(shost->host_lock);
4464 	return stat;
4465 }
4466 
lpfc_host_supported_speeds_set(struct Scsi_Host * shost)4467 static void lpfc_host_supported_speeds_set(struct Scsi_Host *shost)
4468 {
4469 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4470 	struct lpfc_hba   *phba = vport->phba;
4471 
4472 	fc_host_supported_speeds(shost) = 0;
4473 	if (phba->lmt & LMT_128Gb)
4474 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_128GBIT;
4475 	if (phba->lmt & LMT_64Gb)
4476 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_64GBIT;
4477 	if (phba->lmt & LMT_32Gb)
4478 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_32GBIT;
4479 	if (phba->lmt & LMT_16Gb)
4480 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_16GBIT;
4481 	if (phba->lmt & LMT_10Gb)
4482 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_10GBIT;
4483 	if (phba->lmt & LMT_8Gb)
4484 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_8GBIT;
4485 	if (phba->lmt & LMT_4Gb)
4486 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_4GBIT;
4487 	if (phba->lmt & LMT_2Gb)
4488 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_2GBIT;
4489 	if (phba->lmt & LMT_1Gb)
4490 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_1GBIT;
4491 }
4492 
4493 /**
4494  * lpfc_host_attrib_init - Initialize SCSI host attributes on a FC port
4495  * @shost: pointer to SCSI host data structure.
4496  *
4497  * This routine initializes a given SCSI host attributes on a FC port. The
4498  * SCSI host can be either on top of a physical port or a virtual port.
4499  **/
lpfc_host_attrib_init(struct Scsi_Host * shost)4500 void lpfc_host_attrib_init(struct Scsi_Host *shost)
4501 {
4502 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4503 	struct lpfc_hba   *phba = vport->phba;
4504 	/*
4505 	 * Set fixed host attributes.  Must done after lpfc_sli_hba_setup().
4506 	 */
4507 
4508 	fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
4509 	fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
4510 	fc_host_supported_classes(shost) = FC_COS_CLASS3;
4511 
4512 	memset(fc_host_supported_fc4s(shost), 0,
4513 	       sizeof(fc_host_supported_fc4s(shost)));
4514 	fc_host_supported_fc4s(shost)[2] = 1;
4515 	fc_host_supported_fc4s(shost)[7] = 1;
4516 
4517 	lpfc_vport_symbolic_node_name(vport, fc_host_symbolic_name(shost),
4518 				 sizeof fc_host_symbolic_name(shost));
4519 
4520 	lpfc_host_supported_speeds_set(shost);
4521 
4522 	fc_host_maxframe_size(shost) =
4523 		(((uint32_t) vport->fc_sparam.cmn.bbRcvSizeMsb & 0x0F) << 8) |
4524 		(uint32_t) vport->fc_sparam.cmn.bbRcvSizeLsb;
4525 
4526 	fc_host_dev_loss_tmo(shost) = vport->cfg_devloss_tmo;
4527 
4528 	/* This value is also unchanging */
4529 	memset(fc_host_active_fc4s(shost), 0,
4530 	       sizeof(fc_host_active_fc4s(shost)));
4531 	fc_host_active_fc4s(shost)[2] = 1;
4532 	fc_host_active_fc4s(shost)[7] = 1;
4533 
4534 	fc_host_max_npiv_vports(shost) = phba->max_vpi;
4535 	spin_lock_irq(shost->host_lock);
4536 	vport->load_flag &= ~FC_LOADING;
4537 	spin_unlock_irq(shost->host_lock);
4538 }
4539 
4540 /**
4541  * lpfc_stop_port_s3 - Stop SLI3 device port
4542  * @phba: pointer to lpfc hba data structure.
4543  *
4544  * This routine is invoked to stop an SLI3 device port, it stops the device
4545  * from generating interrupts and stops the device driver's timers for the
4546  * device.
4547  **/
4548 static void
lpfc_stop_port_s3(struct lpfc_hba * phba)4549 lpfc_stop_port_s3(struct lpfc_hba *phba)
4550 {
4551 	/* Clear all interrupt enable conditions */
4552 	writel(0, phba->HCregaddr);
4553 	readl(phba->HCregaddr); /* flush */
4554 	/* Clear all pending interrupts */
4555 	writel(0xffffffff, phba->HAregaddr);
4556 	readl(phba->HAregaddr); /* flush */
4557 
4558 	/* Reset some HBA SLI setup states */
4559 	lpfc_stop_hba_timers(phba);
4560 	phba->pport->work_port_events = 0;
4561 }
4562 
4563 /**
4564  * lpfc_stop_port_s4 - Stop SLI4 device port
4565  * @phba: pointer to lpfc hba data structure.
4566  *
4567  * This routine is invoked to stop an SLI4 device port, it stops the device
4568  * from generating interrupts and stops the device driver's timers for the
4569  * device.
4570  **/
4571 static void
lpfc_stop_port_s4(struct lpfc_hba * phba)4572 lpfc_stop_port_s4(struct lpfc_hba *phba)
4573 {
4574 	/* Reset some HBA SLI4 setup states */
4575 	lpfc_stop_hba_timers(phba);
4576 	if (phba->pport)
4577 		phba->pport->work_port_events = 0;
4578 	phba->sli4_hba.intr_enable = 0;
4579 }
4580 
4581 /**
4582  * lpfc_stop_port - Wrapper function for stopping hba port
4583  * @phba: Pointer to HBA context object.
4584  *
4585  * This routine wraps the actual SLI3 or SLI4 hba stop port routine from
4586  * the API jump table function pointer from the lpfc_hba struct.
4587  **/
4588 void
lpfc_stop_port(struct lpfc_hba * phba)4589 lpfc_stop_port(struct lpfc_hba *phba)
4590 {
4591 	phba->lpfc_stop_port(phba);
4592 
4593 	if (phba->wq)
4594 		flush_workqueue(phba->wq);
4595 }
4596 
4597 /**
4598  * lpfc_fcf_redisc_wait_start_timer - Start fcf rediscover wait timer
4599  * @phba: Pointer to hba for which this call is being executed.
4600  *
4601  * This routine starts the timer waiting for the FCF rediscovery to complete.
4602  **/
4603 void
lpfc_fcf_redisc_wait_start_timer(struct lpfc_hba * phba)4604 lpfc_fcf_redisc_wait_start_timer(struct lpfc_hba *phba)
4605 {
4606 	unsigned long fcf_redisc_wait_tmo =
4607 		(jiffies + msecs_to_jiffies(LPFC_FCF_REDISCOVER_WAIT_TMO));
4608 	/* Start fcf rediscovery wait period timer */
4609 	mod_timer(&phba->fcf.redisc_wait, fcf_redisc_wait_tmo);
4610 	spin_lock_irq(&phba->hbalock);
4611 	/* Allow action to new fcf asynchronous event */
4612 	phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
4613 	/* Mark the FCF rediscovery pending state */
4614 	phba->fcf.fcf_flag |= FCF_REDISC_PEND;
4615 	spin_unlock_irq(&phba->hbalock);
4616 }
4617 
4618 /**
4619  * lpfc_sli4_fcf_redisc_wait_tmo - FCF table rediscover wait timeout
4620  * @ptr: Map to lpfc_hba data structure pointer.
4621  *
4622  * This routine is invoked when waiting for FCF table rediscover has been
4623  * timed out. If new FCF record(s) has (have) been discovered during the
4624  * wait period, a new FCF event shall be added to the FCOE async event
4625  * list, and then worker thread shall be waked up for processing from the
4626  * worker thread context.
4627  **/
4628 static void
lpfc_sli4_fcf_redisc_wait_tmo(struct timer_list * t)4629 lpfc_sli4_fcf_redisc_wait_tmo(struct timer_list *t)
4630 {
4631 	struct lpfc_hba *phba = from_timer(phba, t, fcf.redisc_wait);
4632 
4633 	/* Don't send FCF rediscovery event if timer cancelled */
4634 	spin_lock_irq(&phba->hbalock);
4635 	if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
4636 		spin_unlock_irq(&phba->hbalock);
4637 		return;
4638 	}
4639 	/* Clear FCF rediscovery timer pending flag */
4640 	phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
4641 	/* FCF rediscovery event to worker thread */
4642 	phba->fcf.fcf_flag |= FCF_REDISC_EVT;
4643 	spin_unlock_irq(&phba->hbalock);
4644 	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
4645 			"2776 FCF rediscover quiescent timer expired\n");
4646 	/* wake up worker thread */
4647 	lpfc_worker_wake_up(phba);
4648 }
4649 
4650 /**
4651  * lpfc_sli4_parse_latt_fault - Parse sli4 link-attention link fault code
4652  * @phba: pointer to lpfc hba data structure.
4653  * @acqe_link: pointer to the async link completion queue entry.
4654  *
4655  * This routine is to parse the SLI4 link-attention link fault code.
4656  **/
4657 static void
lpfc_sli4_parse_latt_fault(struct lpfc_hba * phba,struct lpfc_acqe_link * acqe_link)4658 lpfc_sli4_parse_latt_fault(struct lpfc_hba *phba,
4659 			   struct lpfc_acqe_link *acqe_link)
4660 {
4661 	switch (bf_get(lpfc_acqe_link_fault, acqe_link)) {
4662 	case LPFC_ASYNC_LINK_FAULT_NONE:
4663 	case LPFC_ASYNC_LINK_FAULT_LOCAL:
4664 	case LPFC_ASYNC_LINK_FAULT_REMOTE:
4665 	case LPFC_ASYNC_LINK_FAULT_LR_LRR:
4666 		break;
4667 	default:
4668 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4669 				"0398 Unknown link fault code: x%x\n",
4670 				bf_get(lpfc_acqe_link_fault, acqe_link));
4671 		break;
4672 	}
4673 }
4674 
4675 /**
4676  * lpfc_sli4_parse_latt_type - Parse sli4 link attention type
4677  * @phba: pointer to lpfc hba data structure.
4678  * @acqe_link: pointer to the async link completion queue entry.
4679  *
4680  * This routine is to parse the SLI4 link attention type and translate it
4681  * into the base driver's link attention type coding.
4682  *
4683  * Return: Link attention type in terms of base driver's coding.
4684  **/
4685 static uint8_t
lpfc_sli4_parse_latt_type(struct lpfc_hba * phba,struct lpfc_acqe_link * acqe_link)4686 lpfc_sli4_parse_latt_type(struct lpfc_hba *phba,
4687 			  struct lpfc_acqe_link *acqe_link)
4688 {
4689 	uint8_t att_type;
4690 
4691 	switch (bf_get(lpfc_acqe_link_status, acqe_link)) {
4692 	case LPFC_ASYNC_LINK_STATUS_DOWN:
4693 	case LPFC_ASYNC_LINK_STATUS_LOGICAL_DOWN:
4694 		att_type = LPFC_ATT_LINK_DOWN;
4695 		break;
4696 	case LPFC_ASYNC_LINK_STATUS_UP:
4697 		/* Ignore physical link up events - wait for logical link up */
4698 		att_type = LPFC_ATT_RESERVED;
4699 		break;
4700 	case LPFC_ASYNC_LINK_STATUS_LOGICAL_UP:
4701 		att_type = LPFC_ATT_LINK_UP;
4702 		break;
4703 	default:
4704 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4705 				"0399 Invalid link attention type: x%x\n",
4706 				bf_get(lpfc_acqe_link_status, acqe_link));
4707 		att_type = LPFC_ATT_RESERVED;
4708 		break;
4709 	}
4710 	return att_type;
4711 }
4712 
4713 /**
4714  * lpfc_sli_port_speed_get - Get sli3 link speed code to link speed
4715  * @phba: pointer to lpfc hba data structure.
4716  *
4717  * This routine is to get an SLI3 FC port's link speed in Mbps.
4718  *
4719  * Return: link speed in terms of Mbps.
4720  **/
4721 uint32_t
lpfc_sli_port_speed_get(struct lpfc_hba * phba)4722 lpfc_sli_port_speed_get(struct lpfc_hba *phba)
4723 {
4724 	uint32_t link_speed;
4725 
4726 	if (!lpfc_is_link_up(phba))
4727 		return 0;
4728 
4729 	if (phba->sli_rev <= LPFC_SLI_REV3) {
4730 		switch (phba->fc_linkspeed) {
4731 		case LPFC_LINK_SPEED_1GHZ:
4732 			link_speed = 1000;
4733 			break;
4734 		case LPFC_LINK_SPEED_2GHZ:
4735 			link_speed = 2000;
4736 			break;
4737 		case LPFC_LINK_SPEED_4GHZ:
4738 			link_speed = 4000;
4739 			break;
4740 		case LPFC_LINK_SPEED_8GHZ:
4741 			link_speed = 8000;
4742 			break;
4743 		case LPFC_LINK_SPEED_10GHZ:
4744 			link_speed = 10000;
4745 			break;
4746 		case LPFC_LINK_SPEED_16GHZ:
4747 			link_speed = 16000;
4748 			break;
4749 		default:
4750 			link_speed = 0;
4751 		}
4752 	} else {
4753 		if (phba->sli4_hba.link_state.logical_speed)
4754 			link_speed =
4755 			      phba->sli4_hba.link_state.logical_speed;
4756 		else
4757 			link_speed = phba->sli4_hba.link_state.speed;
4758 	}
4759 	return link_speed;
4760 }
4761 
4762 /**
4763  * lpfc_sli4_port_speed_parse - Parse async evt link speed code to link speed
4764  * @phba: pointer to lpfc hba data structure.
4765  * @evt_code: asynchronous event code.
4766  * @speed_code: asynchronous event link speed code.
4767  *
4768  * This routine is to parse the giving SLI4 async event link speed code into
4769  * value of Mbps for the link speed.
4770  *
4771  * Return: link speed in terms of Mbps.
4772  **/
4773 static uint32_t
lpfc_sli4_port_speed_parse(struct lpfc_hba * phba,uint32_t evt_code,uint8_t speed_code)4774 lpfc_sli4_port_speed_parse(struct lpfc_hba *phba, uint32_t evt_code,
4775 			   uint8_t speed_code)
4776 {
4777 	uint32_t port_speed;
4778 
4779 	switch (evt_code) {
4780 	case LPFC_TRAILER_CODE_LINK:
4781 		switch (speed_code) {
4782 		case LPFC_ASYNC_LINK_SPEED_ZERO:
4783 			port_speed = 0;
4784 			break;
4785 		case LPFC_ASYNC_LINK_SPEED_10MBPS:
4786 			port_speed = 10;
4787 			break;
4788 		case LPFC_ASYNC_LINK_SPEED_100MBPS:
4789 			port_speed = 100;
4790 			break;
4791 		case LPFC_ASYNC_LINK_SPEED_1GBPS:
4792 			port_speed = 1000;
4793 			break;
4794 		case LPFC_ASYNC_LINK_SPEED_10GBPS:
4795 			port_speed = 10000;
4796 			break;
4797 		case LPFC_ASYNC_LINK_SPEED_20GBPS:
4798 			port_speed = 20000;
4799 			break;
4800 		case LPFC_ASYNC_LINK_SPEED_25GBPS:
4801 			port_speed = 25000;
4802 			break;
4803 		case LPFC_ASYNC_LINK_SPEED_40GBPS:
4804 			port_speed = 40000;
4805 			break;
4806 		default:
4807 			port_speed = 0;
4808 		}
4809 		break;
4810 	case LPFC_TRAILER_CODE_FC:
4811 		switch (speed_code) {
4812 		case LPFC_FC_LA_SPEED_UNKNOWN:
4813 			port_speed = 0;
4814 			break;
4815 		case LPFC_FC_LA_SPEED_1G:
4816 			port_speed = 1000;
4817 			break;
4818 		case LPFC_FC_LA_SPEED_2G:
4819 			port_speed = 2000;
4820 			break;
4821 		case LPFC_FC_LA_SPEED_4G:
4822 			port_speed = 4000;
4823 			break;
4824 		case LPFC_FC_LA_SPEED_8G:
4825 			port_speed = 8000;
4826 			break;
4827 		case LPFC_FC_LA_SPEED_10G:
4828 			port_speed = 10000;
4829 			break;
4830 		case LPFC_FC_LA_SPEED_16G:
4831 			port_speed = 16000;
4832 			break;
4833 		case LPFC_FC_LA_SPEED_32G:
4834 			port_speed = 32000;
4835 			break;
4836 		case LPFC_FC_LA_SPEED_64G:
4837 			port_speed = 64000;
4838 			break;
4839 		case LPFC_FC_LA_SPEED_128G:
4840 			port_speed = 128000;
4841 			break;
4842 		default:
4843 			port_speed = 0;
4844 		}
4845 		break;
4846 	default:
4847 		port_speed = 0;
4848 	}
4849 	return port_speed;
4850 }
4851 
4852 /**
4853  * lpfc_sli4_async_link_evt - Process the asynchronous FCoE link event
4854  * @phba: pointer to lpfc hba data structure.
4855  * @acqe_link: pointer to the async link completion queue entry.
4856  *
4857  * This routine is to handle the SLI4 asynchronous FCoE link event.
4858  **/
4859 static void
lpfc_sli4_async_link_evt(struct lpfc_hba * phba,struct lpfc_acqe_link * acqe_link)4860 lpfc_sli4_async_link_evt(struct lpfc_hba *phba,
4861 			 struct lpfc_acqe_link *acqe_link)
4862 {
4863 	struct lpfc_dmabuf *mp;
4864 	LPFC_MBOXQ_t *pmb;
4865 	MAILBOX_t *mb;
4866 	struct lpfc_mbx_read_top *la;
4867 	uint8_t att_type;
4868 	int rc;
4869 
4870 	att_type = lpfc_sli4_parse_latt_type(phba, acqe_link);
4871 	if (att_type != LPFC_ATT_LINK_DOWN && att_type != LPFC_ATT_LINK_UP)
4872 		return;
4873 	phba->fcoe_eventtag = acqe_link->event_tag;
4874 	pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4875 	if (!pmb) {
4876 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4877 				"0395 The mboxq allocation failed\n");
4878 		return;
4879 	}
4880 	mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
4881 	if (!mp) {
4882 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4883 				"0396 The lpfc_dmabuf allocation failed\n");
4884 		goto out_free_pmb;
4885 	}
4886 	mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
4887 	if (!mp->virt) {
4888 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4889 				"0397 The mbuf allocation failed\n");
4890 		goto out_free_dmabuf;
4891 	}
4892 
4893 	/* Cleanup any outstanding ELS commands */
4894 	lpfc_els_flush_all_cmd(phba);
4895 
4896 	/* Block ELS IOCBs until we have done process link event */
4897 	phba->sli4_hba.els_wq->pring->flag |= LPFC_STOP_IOCB_EVENT;
4898 
4899 	/* Update link event statistics */
4900 	phba->sli.slistat.link_event++;
4901 
4902 	/* Create lpfc_handle_latt mailbox command from link ACQE */
4903 	lpfc_read_topology(phba, pmb, mp);
4904 	pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
4905 	pmb->vport = phba->pport;
4906 
4907 	/* Keep the link status for extra SLI4 state machine reference */
4908 	phba->sli4_hba.link_state.speed =
4909 			lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_LINK,
4910 				bf_get(lpfc_acqe_link_speed, acqe_link));
4911 	phba->sli4_hba.link_state.duplex =
4912 				bf_get(lpfc_acqe_link_duplex, acqe_link);
4913 	phba->sli4_hba.link_state.status =
4914 				bf_get(lpfc_acqe_link_status, acqe_link);
4915 	phba->sli4_hba.link_state.type =
4916 				bf_get(lpfc_acqe_link_type, acqe_link);
4917 	phba->sli4_hba.link_state.number =
4918 				bf_get(lpfc_acqe_link_number, acqe_link);
4919 	phba->sli4_hba.link_state.fault =
4920 				bf_get(lpfc_acqe_link_fault, acqe_link);
4921 	phba->sli4_hba.link_state.logical_speed =
4922 			bf_get(lpfc_acqe_logical_link_speed, acqe_link) * 10;
4923 
4924 	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4925 			"2900 Async FC/FCoE Link event - Speed:%dGBit "
4926 			"duplex:x%x LA Type:x%x Port Type:%d Port Number:%d "
4927 			"Logical speed:%dMbps Fault:%d\n",
4928 			phba->sli4_hba.link_state.speed,
4929 			phba->sli4_hba.link_state.topology,
4930 			phba->sli4_hba.link_state.status,
4931 			phba->sli4_hba.link_state.type,
4932 			phba->sli4_hba.link_state.number,
4933 			phba->sli4_hba.link_state.logical_speed,
4934 			phba->sli4_hba.link_state.fault);
4935 	/*
4936 	 * For FC Mode: issue the READ_TOPOLOGY mailbox command to fetch
4937 	 * topology info. Note: Optional for non FC-AL ports.
4938 	 */
4939 	if (!(phba->hba_flag & HBA_FCOE_MODE)) {
4940 		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
4941 		if (rc == MBX_NOT_FINISHED)
4942 			goto out_free_dmabuf;
4943 		return;
4944 	}
4945 	/*
4946 	 * For FCoE Mode: fill in all the topology information we need and call
4947 	 * the READ_TOPOLOGY completion routine to continue without actually
4948 	 * sending the READ_TOPOLOGY mailbox command to the port.
4949 	 */
4950 	/* Initialize completion status */
4951 	mb = &pmb->u.mb;
4952 	mb->mbxStatus = MBX_SUCCESS;
4953 
4954 	/* Parse port fault information field */
4955 	lpfc_sli4_parse_latt_fault(phba, acqe_link);
4956 
4957 	/* Parse and translate link attention fields */
4958 	la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
4959 	la->eventTag = acqe_link->event_tag;
4960 	bf_set(lpfc_mbx_read_top_att_type, la, att_type);
4961 	bf_set(lpfc_mbx_read_top_link_spd, la,
4962 	       (bf_get(lpfc_acqe_link_speed, acqe_link)));
4963 
4964 	/* Fake the the following irrelvant fields */
4965 	bf_set(lpfc_mbx_read_top_topology, la, LPFC_TOPOLOGY_PT_PT);
4966 	bf_set(lpfc_mbx_read_top_alpa_granted, la, 0);
4967 	bf_set(lpfc_mbx_read_top_il, la, 0);
4968 	bf_set(lpfc_mbx_read_top_pb, la, 0);
4969 	bf_set(lpfc_mbx_read_top_fa, la, 0);
4970 	bf_set(lpfc_mbx_read_top_mm, la, 0);
4971 
4972 	/* Invoke the lpfc_handle_latt mailbox command callback function */
4973 	lpfc_mbx_cmpl_read_topology(phba, pmb);
4974 
4975 	return;
4976 
4977 out_free_dmabuf:
4978 	kfree(mp);
4979 out_free_pmb:
4980 	mempool_free(pmb, phba->mbox_mem_pool);
4981 }
4982 
4983 /**
4984  * lpfc_async_link_speed_to_read_top - Parse async evt link speed code to read
4985  * topology.
4986  * @phba: pointer to lpfc hba data structure.
4987  * @evt_code: asynchronous event code.
4988  * @speed_code: asynchronous event link speed code.
4989  *
4990  * This routine is to parse the giving SLI4 async event link speed code into
4991  * value of Read topology link speed.
4992  *
4993  * Return: link speed in terms of Read topology.
4994  **/
4995 static uint8_t
lpfc_async_link_speed_to_read_top(struct lpfc_hba * phba,uint8_t speed_code)4996 lpfc_async_link_speed_to_read_top(struct lpfc_hba *phba, uint8_t speed_code)
4997 {
4998 	uint8_t port_speed;
4999 
5000 	switch (speed_code) {
5001 	case LPFC_FC_LA_SPEED_1G:
5002 		port_speed = LPFC_LINK_SPEED_1GHZ;
5003 		break;
5004 	case LPFC_FC_LA_SPEED_2G:
5005 		port_speed = LPFC_LINK_SPEED_2GHZ;
5006 		break;
5007 	case LPFC_FC_LA_SPEED_4G:
5008 		port_speed = LPFC_LINK_SPEED_4GHZ;
5009 		break;
5010 	case LPFC_FC_LA_SPEED_8G:
5011 		port_speed = LPFC_LINK_SPEED_8GHZ;
5012 		break;
5013 	case LPFC_FC_LA_SPEED_16G:
5014 		port_speed = LPFC_LINK_SPEED_16GHZ;
5015 		break;
5016 	case LPFC_FC_LA_SPEED_32G:
5017 		port_speed = LPFC_LINK_SPEED_32GHZ;
5018 		break;
5019 	case LPFC_FC_LA_SPEED_64G:
5020 		port_speed = LPFC_LINK_SPEED_64GHZ;
5021 		break;
5022 	case LPFC_FC_LA_SPEED_128G:
5023 		port_speed = LPFC_LINK_SPEED_128GHZ;
5024 		break;
5025 	case LPFC_FC_LA_SPEED_256G:
5026 		port_speed = LPFC_LINK_SPEED_256GHZ;
5027 		break;
5028 	default:
5029 		port_speed = 0;
5030 		break;
5031 	}
5032 
5033 	return port_speed;
5034 }
5035 
5036 #define trunk_link_status(__idx)\
5037 	bf_get(lpfc_acqe_fc_la_trunk_config_port##__idx, acqe_fc) ?\
5038 	       ((phba->trunk_link.link##__idx.state == LPFC_LINK_UP) ?\
5039 		"Link up" : "Link down") : "NA"
5040 /* Did port __idx reported an error */
5041 #define trunk_port_fault(__idx)\
5042 	bf_get(lpfc_acqe_fc_la_trunk_config_port##__idx, acqe_fc) ?\
5043 	       (port_fault & (1 << __idx) ? "YES" : "NO") : "NA"
5044 
5045 static void
lpfc_update_trunk_link_status(struct lpfc_hba * phba,struct lpfc_acqe_fc_la * acqe_fc)5046 lpfc_update_trunk_link_status(struct lpfc_hba *phba,
5047 			      struct lpfc_acqe_fc_la *acqe_fc)
5048 {
5049 	uint8_t port_fault = bf_get(lpfc_acqe_fc_la_trunk_linkmask, acqe_fc);
5050 	uint8_t err = bf_get(lpfc_acqe_fc_la_trunk_fault, acqe_fc);
5051 
5052 	phba->sli4_hba.link_state.speed =
5053 		lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_FC,
5054 				bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
5055 
5056 	phba->sli4_hba.link_state.logical_speed =
5057 				bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc) * 10;
5058 	/* We got FC link speed, convert to fc_linkspeed (READ_TOPOLOGY) */
5059 	phba->fc_linkspeed =
5060 		 lpfc_async_link_speed_to_read_top(
5061 				phba,
5062 				bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
5063 
5064 	if (bf_get(lpfc_acqe_fc_la_trunk_config_port0, acqe_fc)) {
5065 		phba->trunk_link.link0.state =
5066 			bf_get(lpfc_acqe_fc_la_trunk_link_status_port0, acqe_fc)
5067 			? LPFC_LINK_UP : LPFC_LINK_DOWN;
5068 		phba->trunk_link.link0.fault = port_fault & 0x1 ? err : 0;
5069 	}
5070 	if (bf_get(lpfc_acqe_fc_la_trunk_config_port1, acqe_fc)) {
5071 		phba->trunk_link.link1.state =
5072 			bf_get(lpfc_acqe_fc_la_trunk_link_status_port1, acqe_fc)
5073 			? LPFC_LINK_UP : LPFC_LINK_DOWN;
5074 		phba->trunk_link.link1.fault = port_fault & 0x2 ? err : 0;
5075 	}
5076 	if (bf_get(lpfc_acqe_fc_la_trunk_config_port2, acqe_fc)) {
5077 		phba->trunk_link.link2.state =
5078 			bf_get(lpfc_acqe_fc_la_trunk_link_status_port2, acqe_fc)
5079 			? LPFC_LINK_UP : LPFC_LINK_DOWN;
5080 		phba->trunk_link.link2.fault = port_fault & 0x4 ? err : 0;
5081 	}
5082 	if (bf_get(lpfc_acqe_fc_la_trunk_config_port3, acqe_fc)) {
5083 		phba->trunk_link.link3.state =
5084 			bf_get(lpfc_acqe_fc_la_trunk_link_status_port3, acqe_fc)
5085 			? LPFC_LINK_UP : LPFC_LINK_DOWN;
5086 		phba->trunk_link.link3.fault = port_fault & 0x8 ? err : 0;
5087 	}
5088 
5089 	lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5090 			"2910 Async FC Trunking Event - Speed:%d\n"
5091 			"\tLogical speed:%d "
5092 			"port0: %s port1: %s port2: %s port3: %s\n",
5093 			phba->sli4_hba.link_state.speed,
5094 			phba->sli4_hba.link_state.logical_speed,
5095 			trunk_link_status(0), trunk_link_status(1),
5096 			trunk_link_status(2), trunk_link_status(3));
5097 
5098 	if (port_fault)
5099 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5100 				"3202 trunk error:0x%x (%s) seen on port0:%s "
5101 				/*
5102 				 * SLI-4: We have only 0xA error codes
5103 				 * defined as of now. print an appropriate
5104 				 * message in case driver needs to be updated.
5105 				 */
5106 				"port1:%s port2:%s port3:%s\n", err, err > 0xA ?
5107 				"UNDEFINED. update driver." : trunk_errmsg[err],
5108 				trunk_port_fault(0), trunk_port_fault(1),
5109 				trunk_port_fault(2), trunk_port_fault(3));
5110 }
5111 
5112 
5113 /**
5114  * lpfc_sli4_async_fc_evt - Process the asynchronous FC link event
5115  * @phba: pointer to lpfc hba data structure.
5116  * @acqe_fc: pointer to the async fc completion queue entry.
5117  *
5118  * This routine is to handle the SLI4 asynchronous FC event. It will simply log
5119  * that the event was received and then issue a read_topology mailbox command so
5120  * that the rest of the driver will treat it the same as SLI3.
5121  **/
5122 static void
lpfc_sli4_async_fc_evt(struct lpfc_hba * phba,struct lpfc_acqe_fc_la * acqe_fc)5123 lpfc_sli4_async_fc_evt(struct lpfc_hba *phba, struct lpfc_acqe_fc_la *acqe_fc)
5124 {
5125 	struct lpfc_dmabuf *mp;
5126 	LPFC_MBOXQ_t *pmb;
5127 	MAILBOX_t *mb;
5128 	struct lpfc_mbx_read_top *la;
5129 	int rc;
5130 
5131 	if (bf_get(lpfc_trailer_type, acqe_fc) !=
5132 	    LPFC_FC_LA_EVENT_TYPE_FC_LINK) {
5133 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5134 				"2895 Non FC link Event detected.(%d)\n",
5135 				bf_get(lpfc_trailer_type, acqe_fc));
5136 		return;
5137 	}
5138 
5139 	if (bf_get(lpfc_acqe_fc_la_att_type, acqe_fc) ==
5140 	    LPFC_FC_LA_TYPE_TRUNKING_EVENT) {
5141 		lpfc_update_trunk_link_status(phba, acqe_fc);
5142 		return;
5143 	}
5144 
5145 	/* Keep the link status for extra SLI4 state machine reference */
5146 	phba->sli4_hba.link_state.speed =
5147 			lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_FC,
5148 				bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
5149 	phba->sli4_hba.link_state.duplex = LPFC_ASYNC_LINK_DUPLEX_FULL;
5150 	phba->sli4_hba.link_state.topology =
5151 				bf_get(lpfc_acqe_fc_la_topology, acqe_fc);
5152 	phba->sli4_hba.link_state.status =
5153 				bf_get(lpfc_acqe_fc_la_att_type, acqe_fc);
5154 	phba->sli4_hba.link_state.type =
5155 				bf_get(lpfc_acqe_fc_la_port_type, acqe_fc);
5156 	phba->sli4_hba.link_state.number =
5157 				bf_get(lpfc_acqe_fc_la_port_number, acqe_fc);
5158 	phba->sli4_hba.link_state.fault =
5159 				bf_get(lpfc_acqe_link_fault, acqe_fc);
5160 
5161 	if (bf_get(lpfc_acqe_fc_la_att_type, acqe_fc) ==
5162 	    LPFC_FC_LA_TYPE_LINK_DOWN)
5163 		phba->sli4_hba.link_state.logical_speed = 0;
5164 	else if	(!phba->sli4_hba.conf_trunk)
5165 		phba->sli4_hba.link_state.logical_speed =
5166 				bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc) * 10;
5167 
5168 	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5169 			"2896 Async FC event - Speed:%dGBaud Topology:x%x "
5170 			"LA Type:x%x Port Type:%d Port Number:%d Logical speed:"
5171 			"%dMbps Fault:%d\n",
5172 			phba->sli4_hba.link_state.speed,
5173 			phba->sli4_hba.link_state.topology,
5174 			phba->sli4_hba.link_state.status,
5175 			phba->sli4_hba.link_state.type,
5176 			phba->sli4_hba.link_state.number,
5177 			phba->sli4_hba.link_state.logical_speed,
5178 			phba->sli4_hba.link_state.fault);
5179 	pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5180 	if (!pmb) {
5181 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5182 				"2897 The mboxq allocation failed\n");
5183 		return;
5184 	}
5185 	mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
5186 	if (!mp) {
5187 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5188 				"2898 The lpfc_dmabuf allocation failed\n");
5189 		goto out_free_pmb;
5190 	}
5191 	mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
5192 	if (!mp->virt) {
5193 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5194 				"2899 The mbuf allocation failed\n");
5195 		goto out_free_dmabuf;
5196 	}
5197 
5198 	/* Cleanup any outstanding ELS commands */
5199 	lpfc_els_flush_all_cmd(phba);
5200 
5201 	/* Block ELS IOCBs until we have done process link event */
5202 	phba->sli4_hba.els_wq->pring->flag |= LPFC_STOP_IOCB_EVENT;
5203 
5204 	/* Update link event statistics */
5205 	phba->sli.slistat.link_event++;
5206 
5207 	/* Create lpfc_handle_latt mailbox command from link ACQE */
5208 	lpfc_read_topology(phba, pmb, mp);
5209 	pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
5210 	pmb->vport = phba->pport;
5211 
5212 	if (phba->sli4_hba.link_state.status != LPFC_FC_LA_TYPE_LINK_UP) {
5213 		phba->link_flag &= ~(LS_MDS_LINK_DOWN | LS_MDS_LOOPBACK);
5214 
5215 		switch (phba->sli4_hba.link_state.status) {
5216 		case LPFC_FC_LA_TYPE_MDS_LINK_DOWN:
5217 			phba->link_flag |= LS_MDS_LINK_DOWN;
5218 			break;
5219 		case LPFC_FC_LA_TYPE_MDS_LOOPBACK:
5220 			phba->link_flag |= LS_MDS_LOOPBACK;
5221 			break;
5222 		default:
5223 			break;
5224 		}
5225 
5226 		/* Initialize completion status */
5227 		mb = &pmb->u.mb;
5228 		mb->mbxStatus = MBX_SUCCESS;
5229 
5230 		/* Parse port fault information field */
5231 		lpfc_sli4_parse_latt_fault(phba, (void *)acqe_fc);
5232 
5233 		/* Parse and translate link attention fields */
5234 		la = (struct lpfc_mbx_read_top *)&pmb->u.mb.un.varReadTop;
5235 		la->eventTag = acqe_fc->event_tag;
5236 
5237 		if (phba->sli4_hba.link_state.status ==
5238 		    LPFC_FC_LA_TYPE_UNEXP_WWPN) {
5239 			bf_set(lpfc_mbx_read_top_att_type, la,
5240 			       LPFC_FC_LA_TYPE_UNEXP_WWPN);
5241 		} else {
5242 			bf_set(lpfc_mbx_read_top_att_type, la,
5243 			       LPFC_FC_LA_TYPE_LINK_DOWN);
5244 		}
5245 		/* Invoke the mailbox command callback function */
5246 		lpfc_mbx_cmpl_read_topology(phba, pmb);
5247 
5248 		return;
5249 	}
5250 
5251 	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
5252 	if (rc == MBX_NOT_FINISHED)
5253 		goto out_free_dmabuf;
5254 	return;
5255 
5256 out_free_dmabuf:
5257 	kfree(mp);
5258 out_free_pmb:
5259 	mempool_free(pmb, phba->mbox_mem_pool);
5260 }
5261 
5262 /**
5263  * lpfc_sli4_async_sli_evt - Process the asynchronous SLI link event
5264  * @phba: pointer to lpfc hba data structure.
5265  * @acqe_fc: pointer to the async SLI completion queue entry.
5266  *
5267  * This routine is to handle the SLI4 asynchronous SLI events.
5268  **/
5269 static void
lpfc_sli4_async_sli_evt(struct lpfc_hba * phba,struct lpfc_acqe_sli * acqe_sli)5270 lpfc_sli4_async_sli_evt(struct lpfc_hba *phba, struct lpfc_acqe_sli *acqe_sli)
5271 {
5272 	char port_name;
5273 	char message[128];
5274 	uint8_t status;
5275 	uint8_t evt_type;
5276 	uint8_t operational = 0;
5277 	struct temp_event temp_event_data;
5278 	struct lpfc_acqe_misconfigured_event *misconfigured;
5279 	struct Scsi_Host  *shost;
5280 	struct lpfc_vport **vports;
5281 	int rc, i;
5282 
5283 	evt_type = bf_get(lpfc_trailer_type, acqe_sli);
5284 
5285 	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5286 			"2901 Async SLI event - Event Data1:x%08x Event Data2:"
5287 			"x%08x SLI Event Type:%d\n",
5288 			acqe_sli->event_data1, acqe_sli->event_data2,
5289 			evt_type);
5290 
5291 	port_name = phba->Port[0];
5292 	if (port_name == 0x00)
5293 		port_name = '?'; /* get port name is empty */
5294 
5295 	switch (evt_type) {
5296 	case LPFC_SLI_EVENT_TYPE_OVER_TEMP:
5297 		temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
5298 		temp_event_data.event_code = LPFC_THRESHOLD_TEMP;
5299 		temp_event_data.data = (uint32_t)acqe_sli->event_data1;
5300 
5301 		lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
5302 				"3190 Over Temperature:%d Celsius- Port Name %c\n",
5303 				acqe_sli->event_data1, port_name);
5304 
5305 		phba->sfp_warning |= LPFC_TRANSGRESSION_HIGH_TEMPERATURE;
5306 		shost = lpfc_shost_from_vport(phba->pport);
5307 		fc_host_post_vendor_event(shost, fc_get_event_number(),
5308 					  sizeof(temp_event_data),
5309 					  (char *)&temp_event_data,
5310 					  SCSI_NL_VID_TYPE_PCI
5311 					  | PCI_VENDOR_ID_EMULEX);
5312 		break;
5313 	case LPFC_SLI_EVENT_TYPE_NORM_TEMP:
5314 		temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
5315 		temp_event_data.event_code = LPFC_NORMAL_TEMP;
5316 		temp_event_data.data = (uint32_t)acqe_sli->event_data1;
5317 
5318 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5319 				"3191 Normal Temperature:%d Celsius - Port Name %c\n",
5320 				acqe_sli->event_data1, port_name);
5321 
5322 		shost = lpfc_shost_from_vport(phba->pport);
5323 		fc_host_post_vendor_event(shost, fc_get_event_number(),
5324 					  sizeof(temp_event_data),
5325 					  (char *)&temp_event_data,
5326 					  SCSI_NL_VID_TYPE_PCI
5327 					  | PCI_VENDOR_ID_EMULEX);
5328 		break;
5329 	case LPFC_SLI_EVENT_TYPE_MISCONFIGURED:
5330 		misconfigured = (struct lpfc_acqe_misconfigured_event *)
5331 					&acqe_sli->event_data1;
5332 
5333 		/* fetch the status for this port */
5334 		switch (phba->sli4_hba.lnk_info.lnk_no) {
5335 		case LPFC_LINK_NUMBER_0:
5336 			status = bf_get(lpfc_sli_misconfigured_port0_state,
5337 					&misconfigured->theEvent);
5338 			operational = bf_get(lpfc_sli_misconfigured_port0_op,
5339 					&misconfigured->theEvent);
5340 			break;
5341 		case LPFC_LINK_NUMBER_1:
5342 			status = bf_get(lpfc_sli_misconfigured_port1_state,
5343 					&misconfigured->theEvent);
5344 			operational = bf_get(lpfc_sli_misconfigured_port1_op,
5345 					&misconfigured->theEvent);
5346 			break;
5347 		case LPFC_LINK_NUMBER_2:
5348 			status = bf_get(lpfc_sli_misconfigured_port2_state,
5349 					&misconfigured->theEvent);
5350 			operational = bf_get(lpfc_sli_misconfigured_port2_op,
5351 					&misconfigured->theEvent);
5352 			break;
5353 		case LPFC_LINK_NUMBER_3:
5354 			status = bf_get(lpfc_sli_misconfigured_port3_state,
5355 					&misconfigured->theEvent);
5356 			operational = bf_get(lpfc_sli_misconfigured_port3_op,
5357 					&misconfigured->theEvent);
5358 			break;
5359 		default:
5360 			lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5361 					"3296 "
5362 					"LPFC_SLI_EVENT_TYPE_MISCONFIGURED "
5363 					"event: Invalid link %d",
5364 					phba->sli4_hba.lnk_info.lnk_no);
5365 			return;
5366 		}
5367 
5368 		/* Skip if optic state unchanged */
5369 		if (phba->sli4_hba.lnk_info.optic_state == status)
5370 			return;
5371 
5372 		switch (status) {
5373 		case LPFC_SLI_EVENT_STATUS_VALID:
5374 			sprintf(message, "Physical Link is functional");
5375 			break;
5376 		case LPFC_SLI_EVENT_STATUS_NOT_PRESENT:
5377 			sprintf(message, "Optics faulted/incorrectly "
5378 				"installed/not installed - Reseat optics, "
5379 				"if issue not resolved, replace.");
5380 			break;
5381 		case LPFC_SLI_EVENT_STATUS_WRONG_TYPE:
5382 			sprintf(message,
5383 				"Optics of two types installed - Remove one "
5384 				"optic or install matching pair of optics.");
5385 			break;
5386 		case LPFC_SLI_EVENT_STATUS_UNSUPPORTED:
5387 			sprintf(message, "Incompatible optics - Replace with "
5388 				"compatible optics for card to function.");
5389 			break;
5390 		case LPFC_SLI_EVENT_STATUS_UNQUALIFIED:
5391 			sprintf(message, "Unqualified optics - Replace with "
5392 				"Avago optics for Warranty and Technical "
5393 				"Support - Link is%s operational",
5394 				(operational) ? " not" : "");
5395 			break;
5396 		case LPFC_SLI_EVENT_STATUS_UNCERTIFIED:
5397 			sprintf(message, "Uncertified optics - Replace with "
5398 				"Avago-certified optics to enable link "
5399 				"operation - Link is%s operational",
5400 				(operational) ? " not" : "");
5401 			break;
5402 		default:
5403 			/* firmware is reporting a status we don't know about */
5404 			sprintf(message, "Unknown event status x%02x", status);
5405 			break;
5406 		}
5407 
5408 		/* Issue READ_CONFIG mbox command to refresh supported speeds */
5409 		rc = lpfc_sli4_read_config(phba);
5410 		if (rc) {
5411 			phba->lmt = 0;
5412 			lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5413 					"3194 Unable to retrieve supported "
5414 					"speeds, rc = 0x%x\n", rc);
5415 		}
5416 		vports = lpfc_create_vport_work_array(phba);
5417 		if (vports != NULL) {
5418 			for (i = 0; i <= phba->max_vports && vports[i] != NULL;
5419 					i++) {
5420 				shost = lpfc_shost_from_vport(vports[i]);
5421 				lpfc_host_supported_speeds_set(shost);
5422 			}
5423 		}
5424 		lpfc_destroy_vport_work_array(phba, vports);
5425 
5426 		phba->sli4_hba.lnk_info.optic_state = status;
5427 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5428 				"3176 Port Name %c %s\n", port_name, message);
5429 		break;
5430 	case LPFC_SLI_EVENT_TYPE_REMOTE_DPORT:
5431 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5432 				"3192 Remote DPort Test Initiated - "
5433 				"Event Data1:x%08x Event Data2: x%08x\n",
5434 				acqe_sli->event_data1, acqe_sli->event_data2);
5435 		break;
5436 	default:
5437 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5438 				"3193 Async SLI event - Event Data1:x%08x Event Data2:"
5439 				"x%08x SLI Event Type:%d\n",
5440 				acqe_sli->event_data1, acqe_sli->event_data2,
5441 				evt_type);
5442 		break;
5443 	}
5444 }
5445 
5446 /**
5447  * lpfc_sli4_perform_vport_cvl - Perform clear virtual link on a vport
5448  * @vport: pointer to vport data structure.
5449  *
5450  * This routine is to perform Clear Virtual Link (CVL) on a vport in
5451  * response to a CVL event.
5452  *
5453  * Return the pointer to the ndlp with the vport if successful, otherwise
5454  * return NULL.
5455  **/
5456 static struct lpfc_nodelist *
lpfc_sli4_perform_vport_cvl(struct lpfc_vport * vport)5457 lpfc_sli4_perform_vport_cvl(struct lpfc_vport *vport)
5458 {
5459 	struct lpfc_nodelist *ndlp;
5460 	struct Scsi_Host *shost;
5461 	struct lpfc_hba *phba;
5462 
5463 	if (!vport)
5464 		return NULL;
5465 	phba = vport->phba;
5466 	if (!phba)
5467 		return NULL;
5468 	ndlp = lpfc_findnode_did(vport, Fabric_DID);
5469 	if (!ndlp) {
5470 		/* Cannot find existing Fabric ndlp, so allocate a new one */
5471 		ndlp = lpfc_nlp_init(vport, Fabric_DID);
5472 		if (!ndlp)
5473 			return 0;
5474 		/* Set the node type */
5475 		ndlp->nlp_type |= NLP_FABRIC;
5476 		/* Put ndlp onto node list */
5477 		lpfc_enqueue_node(vport, ndlp);
5478 	} else if (!NLP_CHK_NODE_ACT(ndlp)) {
5479 		/* re-setup ndlp without removing from node list */
5480 		ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
5481 		if (!ndlp)
5482 			return 0;
5483 	}
5484 	if ((phba->pport->port_state < LPFC_FLOGI) &&
5485 		(phba->pport->port_state != LPFC_VPORT_FAILED))
5486 		return NULL;
5487 	/* If virtual link is not yet instantiated ignore CVL */
5488 	if ((vport != phba->pport) && (vport->port_state < LPFC_FDISC)
5489 		&& (vport->port_state != LPFC_VPORT_FAILED))
5490 		return NULL;
5491 	shost = lpfc_shost_from_vport(vport);
5492 	if (!shost)
5493 		return NULL;
5494 	lpfc_linkdown_port(vport);
5495 	lpfc_cleanup_pending_mbox(vport);
5496 	spin_lock_irq(shost->host_lock);
5497 	vport->fc_flag |= FC_VPORT_CVL_RCVD;
5498 	spin_unlock_irq(shost->host_lock);
5499 
5500 	return ndlp;
5501 }
5502 
5503 /**
5504  * lpfc_sli4_perform_all_vport_cvl - Perform clear virtual link on all vports
5505  * @vport: pointer to lpfc hba data structure.
5506  *
5507  * This routine is to perform Clear Virtual Link (CVL) on all vports in
5508  * response to a FCF dead event.
5509  **/
5510 static void
lpfc_sli4_perform_all_vport_cvl(struct lpfc_hba * phba)5511 lpfc_sli4_perform_all_vport_cvl(struct lpfc_hba *phba)
5512 {
5513 	struct lpfc_vport **vports;
5514 	int i;
5515 
5516 	vports = lpfc_create_vport_work_array(phba);
5517 	if (vports)
5518 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
5519 			lpfc_sli4_perform_vport_cvl(vports[i]);
5520 	lpfc_destroy_vport_work_array(phba, vports);
5521 }
5522 
5523 /**
5524  * lpfc_sli4_async_fip_evt - Process the asynchronous FCoE FIP event
5525  * @phba: pointer to lpfc hba data structure.
5526  * @acqe_link: pointer to the async fcoe completion queue entry.
5527  *
5528  * This routine is to handle the SLI4 asynchronous fcoe event.
5529  **/
5530 static void
lpfc_sli4_async_fip_evt(struct lpfc_hba * phba,struct lpfc_acqe_fip * acqe_fip)5531 lpfc_sli4_async_fip_evt(struct lpfc_hba *phba,
5532 			struct lpfc_acqe_fip *acqe_fip)
5533 {
5534 	uint8_t event_type = bf_get(lpfc_trailer_type, acqe_fip);
5535 	int rc;
5536 	struct lpfc_vport *vport;
5537 	struct lpfc_nodelist *ndlp;
5538 	struct Scsi_Host  *shost;
5539 	int active_vlink_present;
5540 	struct lpfc_vport **vports;
5541 	int i;
5542 
5543 	phba->fc_eventTag = acqe_fip->event_tag;
5544 	phba->fcoe_eventtag = acqe_fip->event_tag;
5545 	switch (event_type) {
5546 	case LPFC_FIP_EVENT_TYPE_NEW_FCF:
5547 	case LPFC_FIP_EVENT_TYPE_FCF_PARAM_MOD:
5548 		if (event_type == LPFC_FIP_EVENT_TYPE_NEW_FCF)
5549 			lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
5550 					LOG_DISCOVERY,
5551 					"2546 New FCF event, evt_tag:x%x, "
5552 					"index:x%x\n",
5553 					acqe_fip->event_tag,
5554 					acqe_fip->index);
5555 		else
5556 			lpfc_printf_log(phba, KERN_WARNING, LOG_FIP |
5557 					LOG_DISCOVERY,
5558 					"2788 FCF param modified event, "
5559 					"evt_tag:x%x, index:x%x\n",
5560 					acqe_fip->event_tag,
5561 					acqe_fip->index);
5562 		if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
5563 			/*
5564 			 * During period of FCF discovery, read the FCF
5565 			 * table record indexed by the event to update
5566 			 * FCF roundrobin failover eligible FCF bmask.
5567 			 */
5568 			lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
5569 					LOG_DISCOVERY,
5570 					"2779 Read FCF (x%x) for updating "
5571 					"roundrobin FCF failover bmask\n",
5572 					acqe_fip->index);
5573 			rc = lpfc_sli4_read_fcf_rec(phba, acqe_fip->index);
5574 		}
5575 
5576 		/* If the FCF discovery is in progress, do nothing. */
5577 		spin_lock_irq(&phba->hbalock);
5578 		if (phba->hba_flag & FCF_TS_INPROG) {
5579 			spin_unlock_irq(&phba->hbalock);
5580 			break;
5581 		}
5582 		/* If fast FCF failover rescan event is pending, do nothing */
5583 		if (phba->fcf.fcf_flag & (FCF_REDISC_EVT | FCF_REDISC_PEND)) {
5584 			spin_unlock_irq(&phba->hbalock);
5585 			break;
5586 		}
5587 
5588 		/* If the FCF has been in discovered state, do nothing. */
5589 		if (phba->fcf.fcf_flag & FCF_SCAN_DONE) {
5590 			spin_unlock_irq(&phba->hbalock);
5591 			break;
5592 		}
5593 		spin_unlock_irq(&phba->hbalock);
5594 
5595 		/* Otherwise, scan the entire FCF table and re-discover SAN */
5596 		lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
5597 				"2770 Start FCF table scan per async FCF "
5598 				"event, evt_tag:x%x, index:x%x\n",
5599 				acqe_fip->event_tag, acqe_fip->index);
5600 		rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
5601 						     LPFC_FCOE_FCF_GET_FIRST);
5602 		if (rc)
5603 			lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
5604 					"2547 Issue FCF scan read FCF mailbox "
5605 					"command failed (x%x)\n", rc);
5606 		break;
5607 
5608 	case LPFC_FIP_EVENT_TYPE_FCF_TABLE_FULL:
5609 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5610 			"2548 FCF Table full count 0x%x tag 0x%x\n",
5611 			bf_get(lpfc_acqe_fip_fcf_count, acqe_fip),
5612 			acqe_fip->event_tag);
5613 		break;
5614 
5615 	case LPFC_FIP_EVENT_TYPE_FCF_DEAD:
5616 		phba->fcoe_cvl_eventtag = acqe_fip->event_tag;
5617 		lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
5618 			"2549 FCF (x%x) disconnected from network, "
5619 			"tag:x%x\n", acqe_fip->index, acqe_fip->event_tag);
5620 		/*
5621 		 * If we are in the middle of FCF failover process, clear
5622 		 * the corresponding FCF bit in the roundrobin bitmap.
5623 		 */
5624 		spin_lock_irq(&phba->hbalock);
5625 		if ((phba->fcf.fcf_flag & FCF_DISCOVERY) &&
5626 		    (phba->fcf.current_rec.fcf_indx != acqe_fip->index)) {
5627 			spin_unlock_irq(&phba->hbalock);
5628 			/* Update FLOGI FCF failover eligible FCF bmask */
5629 			lpfc_sli4_fcf_rr_index_clear(phba, acqe_fip->index);
5630 			break;
5631 		}
5632 		spin_unlock_irq(&phba->hbalock);
5633 
5634 		/* If the event is not for currently used fcf do nothing */
5635 		if (phba->fcf.current_rec.fcf_indx != acqe_fip->index)
5636 			break;
5637 
5638 		/*
5639 		 * Otherwise, request the port to rediscover the entire FCF
5640 		 * table for a fast recovery from case that the current FCF
5641 		 * is no longer valid as we are not in the middle of FCF
5642 		 * failover process already.
5643 		 */
5644 		spin_lock_irq(&phba->hbalock);
5645 		/* Mark the fast failover process in progress */
5646 		phba->fcf.fcf_flag |= FCF_DEAD_DISC;
5647 		spin_unlock_irq(&phba->hbalock);
5648 
5649 		lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
5650 				"2771 Start FCF fast failover process due to "
5651 				"FCF DEAD event: evt_tag:x%x, fcf_index:x%x "
5652 				"\n", acqe_fip->event_tag, acqe_fip->index);
5653 		rc = lpfc_sli4_redisc_fcf_table(phba);
5654 		if (rc) {
5655 			lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
5656 					LOG_DISCOVERY,
5657 					"2772 Issue FCF rediscover mailbox "
5658 					"command failed, fail through to FCF "
5659 					"dead event\n");
5660 			spin_lock_irq(&phba->hbalock);
5661 			phba->fcf.fcf_flag &= ~FCF_DEAD_DISC;
5662 			spin_unlock_irq(&phba->hbalock);
5663 			/*
5664 			 * Last resort will fail over by treating this
5665 			 * as a link down to FCF registration.
5666 			 */
5667 			lpfc_sli4_fcf_dead_failthrough(phba);
5668 		} else {
5669 			/* Reset FCF roundrobin bmask for new discovery */
5670 			lpfc_sli4_clear_fcf_rr_bmask(phba);
5671 			/*
5672 			 * Handling fast FCF failover to a DEAD FCF event is
5673 			 * considered equalivant to receiving CVL to all vports.
5674 			 */
5675 			lpfc_sli4_perform_all_vport_cvl(phba);
5676 		}
5677 		break;
5678 	case LPFC_FIP_EVENT_TYPE_CVL:
5679 		phba->fcoe_cvl_eventtag = acqe_fip->event_tag;
5680 		lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
5681 			"2718 Clear Virtual Link Received for VPI 0x%x"
5682 			" tag 0x%x\n", acqe_fip->index, acqe_fip->event_tag);
5683 
5684 		vport = lpfc_find_vport_by_vpid(phba,
5685 						acqe_fip->index);
5686 		ndlp = lpfc_sli4_perform_vport_cvl(vport);
5687 		if (!ndlp)
5688 			break;
5689 		active_vlink_present = 0;
5690 
5691 		vports = lpfc_create_vport_work_array(phba);
5692 		if (vports) {
5693 			for (i = 0; i <= phba->max_vports && vports[i] != NULL;
5694 					i++) {
5695 				if ((!(vports[i]->fc_flag &
5696 					FC_VPORT_CVL_RCVD)) &&
5697 					(vports[i]->port_state > LPFC_FDISC)) {
5698 					active_vlink_present = 1;
5699 					break;
5700 				}
5701 			}
5702 			lpfc_destroy_vport_work_array(phba, vports);
5703 		}
5704 
5705 		/*
5706 		 * Don't re-instantiate if vport is marked for deletion.
5707 		 * If we are here first then vport_delete is going to wait
5708 		 * for discovery to complete.
5709 		 */
5710 		if (!(vport->load_flag & FC_UNLOADING) &&
5711 					active_vlink_present) {
5712 			/*
5713 			 * If there are other active VLinks present,
5714 			 * re-instantiate the Vlink using FDISC.
5715 			 */
5716 			mod_timer(&ndlp->nlp_delayfunc,
5717 				  jiffies + msecs_to_jiffies(1000));
5718 			shost = lpfc_shost_from_vport(vport);
5719 			spin_lock_irq(shost->host_lock);
5720 			ndlp->nlp_flag |= NLP_DELAY_TMO;
5721 			spin_unlock_irq(shost->host_lock);
5722 			ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
5723 			vport->port_state = LPFC_FDISC;
5724 		} else {
5725 			/*
5726 			 * Otherwise, we request port to rediscover
5727 			 * the entire FCF table for a fast recovery
5728 			 * from possible case that the current FCF
5729 			 * is no longer valid if we are not already
5730 			 * in the FCF failover process.
5731 			 */
5732 			spin_lock_irq(&phba->hbalock);
5733 			if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
5734 				spin_unlock_irq(&phba->hbalock);
5735 				break;
5736 			}
5737 			/* Mark the fast failover process in progress */
5738 			phba->fcf.fcf_flag |= FCF_ACVL_DISC;
5739 			spin_unlock_irq(&phba->hbalock);
5740 			lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
5741 					LOG_DISCOVERY,
5742 					"2773 Start FCF failover per CVL, "
5743 					"evt_tag:x%x\n", acqe_fip->event_tag);
5744 			rc = lpfc_sli4_redisc_fcf_table(phba);
5745 			if (rc) {
5746 				lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
5747 						LOG_DISCOVERY,
5748 						"2774 Issue FCF rediscover "
5749 						"mailbox command failed, "
5750 						"through to CVL event\n");
5751 				spin_lock_irq(&phba->hbalock);
5752 				phba->fcf.fcf_flag &= ~FCF_ACVL_DISC;
5753 				spin_unlock_irq(&phba->hbalock);
5754 				/*
5755 				 * Last resort will be re-try on the
5756 				 * the current registered FCF entry.
5757 				 */
5758 				lpfc_retry_pport_discovery(phba);
5759 			} else
5760 				/*
5761 				 * Reset FCF roundrobin bmask for new
5762 				 * discovery.
5763 				 */
5764 				lpfc_sli4_clear_fcf_rr_bmask(phba);
5765 		}
5766 		break;
5767 	default:
5768 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5769 			"0288 Unknown FCoE event type 0x%x event tag "
5770 			"0x%x\n", event_type, acqe_fip->event_tag);
5771 		break;
5772 	}
5773 }
5774 
5775 /**
5776  * lpfc_sli4_async_dcbx_evt - Process the asynchronous dcbx event
5777  * @phba: pointer to lpfc hba data structure.
5778  * @acqe_link: pointer to the async dcbx completion queue entry.
5779  *
5780  * This routine is to handle the SLI4 asynchronous dcbx event.
5781  **/
5782 static void
lpfc_sli4_async_dcbx_evt(struct lpfc_hba * phba,struct lpfc_acqe_dcbx * acqe_dcbx)5783 lpfc_sli4_async_dcbx_evt(struct lpfc_hba *phba,
5784 			 struct lpfc_acqe_dcbx *acqe_dcbx)
5785 {
5786 	phba->fc_eventTag = acqe_dcbx->event_tag;
5787 	lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5788 			"0290 The SLI4 DCBX asynchronous event is not "
5789 			"handled yet\n");
5790 }
5791 
5792 /**
5793  * lpfc_sli4_async_grp5_evt - Process the asynchronous group5 event
5794  * @phba: pointer to lpfc hba data structure.
5795  * @acqe_link: pointer to the async grp5 completion queue entry.
5796  *
5797  * This routine is to handle the SLI4 asynchronous grp5 event. A grp5 event
5798  * is an asynchronous notified of a logical link speed change.  The Port
5799  * reports the logical link speed in units of 10Mbps.
5800  **/
5801 static void
lpfc_sli4_async_grp5_evt(struct lpfc_hba * phba,struct lpfc_acqe_grp5 * acqe_grp5)5802 lpfc_sli4_async_grp5_evt(struct lpfc_hba *phba,
5803 			 struct lpfc_acqe_grp5 *acqe_grp5)
5804 {
5805 	uint16_t prev_ll_spd;
5806 
5807 	phba->fc_eventTag = acqe_grp5->event_tag;
5808 	phba->fcoe_eventtag = acqe_grp5->event_tag;
5809 	prev_ll_spd = phba->sli4_hba.link_state.logical_speed;
5810 	phba->sli4_hba.link_state.logical_speed =
5811 		(bf_get(lpfc_acqe_grp5_llink_spd, acqe_grp5)) * 10;
5812 	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5813 			"2789 GRP5 Async Event: Updating logical link speed "
5814 			"from %dMbps to %dMbps\n", prev_ll_spd,
5815 			phba->sli4_hba.link_state.logical_speed);
5816 }
5817 
5818 /**
5819  * lpfc_sli4_async_event_proc - Process all the pending asynchronous event
5820  * @phba: pointer to lpfc hba data structure.
5821  *
5822  * This routine is invoked by the worker thread to process all the pending
5823  * SLI4 asynchronous events.
5824  **/
lpfc_sli4_async_event_proc(struct lpfc_hba * phba)5825 void lpfc_sli4_async_event_proc(struct lpfc_hba *phba)
5826 {
5827 	struct lpfc_cq_event *cq_event;
5828 
5829 	/* First, declare the async event has been handled */
5830 	spin_lock_irq(&phba->hbalock);
5831 	phba->hba_flag &= ~ASYNC_EVENT;
5832 	spin_unlock_irq(&phba->hbalock);
5833 	/* Now, handle all the async events */
5834 	while (!list_empty(&phba->sli4_hba.sp_asynce_work_queue)) {
5835 		/* Get the first event from the head of the event queue */
5836 		spin_lock_irq(&phba->hbalock);
5837 		list_remove_head(&phba->sli4_hba.sp_asynce_work_queue,
5838 				 cq_event, struct lpfc_cq_event, list);
5839 		spin_unlock_irq(&phba->hbalock);
5840 		/* Process the asynchronous event */
5841 		switch (bf_get(lpfc_trailer_code, &cq_event->cqe.mcqe_cmpl)) {
5842 		case LPFC_TRAILER_CODE_LINK:
5843 			lpfc_sli4_async_link_evt(phba,
5844 						 &cq_event->cqe.acqe_link);
5845 			break;
5846 		case LPFC_TRAILER_CODE_FCOE:
5847 			lpfc_sli4_async_fip_evt(phba, &cq_event->cqe.acqe_fip);
5848 			break;
5849 		case LPFC_TRAILER_CODE_DCBX:
5850 			lpfc_sli4_async_dcbx_evt(phba,
5851 						 &cq_event->cqe.acqe_dcbx);
5852 			break;
5853 		case LPFC_TRAILER_CODE_GRP5:
5854 			lpfc_sli4_async_grp5_evt(phba,
5855 						 &cq_event->cqe.acqe_grp5);
5856 			break;
5857 		case LPFC_TRAILER_CODE_FC:
5858 			lpfc_sli4_async_fc_evt(phba, &cq_event->cqe.acqe_fc);
5859 			break;
5860 		case LPFC_TRAILER_CODE_SLI:
5861 			lpfc_sli4_async_sli_evt(phba, &cq_event->cqe.acqe_sli);
5862 			break;
5863 		default:
5864 			lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5865 					"1804 Invalid asynchrous event code: "
5866 					"x%x\n", bf_get(lpfc_trailer_code,
5867 					&cq_event->cqe.mcqe_cmpl));
5868 			break;
5869 		}
5870 		/* Free the completion event processed to the free pool */
5871 		lpfc_sli4_cq_event_release(phba, cq_event);
5872 	}
5873 }
5874 
5875 /**
5876  * lpfc_sli4_fcf_redisc_event_proc - Process fcf table rediscovery event
5877  * @phba: pointer to lpfc hba data structure.
5878  *
5879  * This routine is invoked by the worker thread to process FCF table
5880  * rediscovery pending completion event.
5881  **/
lpfc_sli4_fcf_redisc_event_proc(struct lpfc_hba * phba)5882 void lpfc_sli4_fcf_redisc_event_proc(struct lpfc_hba *phba)
5883 {
5884 	int rc;
5885 
5886 	spin_lock_irq(&phba->hbalock);
5887 	/* Clear FCF rediscovery timeout event */
5888 	phba->fcf.fcf_flag &= ~FCF_REDISC_EVT;
5889 	/* Clear driver fast failover FCF record flag */
5890 	phba->fcf.failover_rec.flag = 0;
5891 	/* Set state for FCF fast failover */
5892 	phba->fcf.fcf_flag |= FCF_REDISC_FOV;
5893 	spin_unlock_irq(&phba->hbalock);
5894 
5895 	/* Scan FCF table from the first entry to re-discover SAN */
5896 	lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
5897 			"2777 Start post-quiescent FCF table scan\n");
5898 	rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
5899 	if (rc)
5900 		lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
5901 				"2747 Issue FCF scan read FCF mailbox "
5902 				"command failed 0x%x\n", rc);
5903 }
5904 
5905 /**
5906  * lpfc_api_table_setup - Set up per hba pci-device group func api jump table
5907  * @phba: pointer to lpfc hba data structure.
5908  * @dev_grp: The HBA PCI-Device group number.
5909  *
5910  * This routine is invoked to set up the per HBA PCI-Device group function
5911  * API jump table entries.
5912  *
5913  * Return: 0 if success, otherwise -ENODEV
5914  **/
5915 int
lpfc_api_table_setup(struct lpfc_hba * phba,uint8_t dev_grp)5916 lpfc_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
5917 {
5918 	int rc;
5919 
5920 	/* Set up lpfc PCI-device group */
5921 	phba->pci_dev_grp = dev_grp;
5922 
5923 	/* The LPFC_PCI_DEV_OC uses SLI4 */
5924 	if (dev_grp == LPFC_PCI_DEV_OC)
5925 		phba->sli_rev = LPFC_SLI_REV4;
5926 
5927 	/* Set up device INIT API function jump table */
5928 	rc = lpfc_init_api_table_setup(phba, dev_grp);
5929 	if (rc)
5930 		return -ENODEV;
5931 	/* Set up SCSI API function jump table */
5932 	rc = lpfc_scsi_api_table_setup(phba, dev_grp);
5933 	if (rc)
5934 		return -ENODEV;
5935 	/* Set up SLI API function jump table */
5936 	rc = lpfc_sli_api_table_setup(phba, dev_grp);
5937 	if (rc)
5938 		return -ENODEV;
5939 	/* Set up MBOX API function jump table */
5940 	rc = lpfc_mbox_api_table_setup(phba, dev_grp);
5941 	if (rc)
5942 		return -ENODEV;
5943 
5944 	return 0;
5945 }
5946 
5947 /**
5948  * lpfc_log_intr_mode - Log the active interrupt mode
5949  * @phba: pointer to lpfc hba data structure.
5950  * @intr_mode: active interrupt mode adopted.
5951  *
5952  * This routine it invoked to log the currently used active interrupt mode
5953  * to the device.
5954  **/
lpfc_log_intr_mode(struct lpfc_hba * phba,uint32_t intr_mode)5955 static void lpfc_log_intr_mode(struct lpfc_hba *phba, uint32_t intr_mode)
5956 {
5957 	switch (intr_mode) {
5958 	case 0:
5959 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5960 				"0470 Enable INTx interrupt mode.\n");
5961 		break;
5962 	case 1:
5963 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5964 				"0481 Enabled MSI interrupt mode.\n");
5965 		break;
5966 	case 2:
5967 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5968 				"0480 Enabled MSI-X interrupt mode.\n");
5969 		break;
5970 	default:
5971 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5972 				"0482 Illegal interrupt mode.\n");
5973 		break;
5974 	}
5975 	return;
5976 }
5977 
5978 /**
5979  * lpfc_enable_pci_dev - Enable a generic PCI device.
5980  * @phba: pointer to lpfc hba data structure.
5981  *
5982  * This routine is invoked to enable the PCI device that is common to all
5983  * PCI devices.
5984  *
5985  * Return codes
5986  * 	0 - successful
5987  * 	other values - error
5988  **/
5989 static int
lpfc_enable_pci_dev(struct lpfc_hba * phba)5990 lpfc_enable_pci_dev(struct lpfc_hba *phba)
5991 {
5992 	struct pci_dev *pdev;
5993 
5994 	/* Obtain PCI device reference */
5995 	if (!phba->pcidev)
5996 		goto out_error;
5997 	else
5998 		pdev = phba->pcidev;
5999 	/* Enable PCI device */
6000 	if (pci_enable_device_mem(pdev))
6001 		goto out_error;
6002 	/* Request PCI resource for the device */
6003 	if (pci_request_mem_regions(pdev, LPFC_DRIVER_NAME))
6004 		goto out_disable_device;
6005 	/* Set up device as PCI master and save state for EEH */
6006 	pci_set_master(pdev);
6007 	pci_try_set_mwi(pdev);
6008 	pci_save_state(pdev);
6009 
6010 	/* PCIe EEH recovery on powerpc platforms needs fundamental reset */
6011 	if (pci_is_pcie(pdev))
6012 		pdev->needs_freset = 1;
6013 
6014 	return 0;
6015 
6016 out_disable_device:
6017 	pci_disable_device(pdev);
6018 out_error:
6019 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6020 			"1401 Failed to enable pci device\n");
6021 	return -ENODEV;
6022 }
6023 
6024 /**
6025  * lpfc_disable_pci_dev - Disable a generic PCI device.
6026  * @phba: pointer to lpfc hba data structure.
6027  *
6028  * This routine is invoked to disable the PCI device that is common to all
6029  * PCI devices.
6030  **/
6031 static void
lpfc_disable_pci_dev(struct lpfc_hba * phba)6032 lpfc_disable_pci_dev(struct lpfc_hba *phba)
6033 {
6034 	struct pci_dev *pdev;
6035 
6036 	/* Obtain PCI device reference */
6037 	if (!phba->pcidev)
6038 		return;
6039 	else
6040 		pdev = phba->pcidev;
6041 	/* Release PCI resource and disable PCI device */
6042 	pci_release_mem_regions(pdev);
6043 	pci_disable_device(pdev);
6044 
6045 	return;
6046 }
6047 
6048 /**
6049  * lpfc_reset_hba - Reset a hba
6050  * @phba: pointer to lpfc hba data structure.
6051  *
6052  * This routine is invoked to reset a hba device. It brings the HBA
6053  * offline, performs a board restart, and then brings the board back
6054  * online. The lpfc_offline calls lpfc_sli_hba_down which will clean up
6055  * on outstanding mailbox commands.
6056  **/
6057 void
lpfc_reset_hba(struct lpfc_hba * phba)6058 lpfc_reset_hba(struct lpfc_hba *phba)
6059 {
6060 	/* If resets are disabled then set error state and return. */
6061 	if (!phba->cfg_enable_hba_reset) {
6062 		phba->link_state = LPFC_HBA_ERROR;
6063 		return;
6064 	}
6065 	if (phba->sli.sli_flag & LPFC_SLI_ACTIVE)
6066 		lpfc_offline_prep(phba, LPFC_MBX_WAIT);
6067 	else
6068 		lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
6069 	lpfc_offline(phba);
6070 	lpfc_sli_brdrestart(phba);
6071 	lpfc_online(phba);
6072 	lpfc_unblock_mgmt_io(phba);
6073 }
6074 
6075 /**
6076  * lpfc_sli_sriov_nr_virtfn_get - Get the number of sr-iov virtual functions
6077  * @phba: pointer to lpfc hba data structure.
6078  *
6079  * This function enables the PCI SR-IOV virtual functions to a physical
6080  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
6081  * enable the number of virtual functions to the physical function. As
6082  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
6083  * API call does not considered as an error condition for most of the device.
6084  **/
6085 uint16_t
lpfc_sli_sriov_nr_virtfn_get(struct lpfc_hba * phba)6086 lpfc_sli_sriov_nr_virtfn_get(struct lpfc_hba *phba)
6087 {
6088 	struct pci_dev *pdev = phba->pcidev;
6089 	uint16_t nr_virtfn;
6090 	int pos;
6091 
6092 	pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
6093 	if (pos == 0)
6094 		return 0;
6095 
6096 	pci_read_config_word(pdev, pos + PCI_SRIOV_TOTAL_VF, &nr_virtfn);
6097 	return nr_virtfn;
6098 }
6099 
6100 /**
6101  * lpfc_sli_probe_sriov_nr_virtfn - Enable a number of sr-iov virtual functions
6102  * @phba: pointer to lpfc hba data structure.
6103  * @nr_vfn: number of virtual functions to be enabled.
6104  *
6105  * This function enables the PCI SR-IOV virtual functions to a physical
6106  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
6107  * enable the number of virtual functions to the physical function. As
6108  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
6109  * API call does not considered as an error condition for most of the device.
6110  **/
6111 int
lpfc_sli_probe_sriov_nr_virtfn(struct lpfc_hba * phba,int nr_vfn)6112 lpfc_sli_probe_sriov_nr_virtfn(struct lpfc_hba *phba, int nr_vfn)
6113 {
6114 	struct pci_dev *pdev = phba->pcidev;
6115 	uint16_t max_nr_vfn;
6116 	int rc;
6117 
6118 	max_nr_vfn = lpfc_sli_sriov_nr_virtfn_get(phba);
6119 	if (nr_vfn > max_nr_vfn) {
6120 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6121 				"3057 Requested vfs (%d) greater than "
6122 				"supported vfs (%d)", nr_vfn, max_nr_vfn);
6123 		return -EINVAL;
6124 	}
6125 
6126 	rc = pci_enable_sriov(pdev, nr_vfn);
6127 	if (rc) {
6128 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6129 				"2806 Failed to enable sriov on this device "
6130 				"with vfn number nr_vf:%d, rc:%d\n",
6131 				nr_vfn, rc);
6132 	} else
6133 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6134 				"2807 Successful enable sriov on this device "
6135 				"with vfn number nr_vf:%d\n", nr_vfn);
6136 	return rc;
6137 }
6138 
6139 /**
6140  * lpfc_setup_driver_resource_phase1 - Phase1 etup driver internal resources.
6141  * @phba: pointer to lpfc hba data structure.
6142  *
6143  * This routine is invoked to set up the driver internal resources before the
6144  * device specific resource setup to support the HBA device it attached to.
6145  *
6146  * Return codes
6147  *	0 - successful
6148  *	other values - error
6149  **/
6150 static int
lpfc_setup_driver_resource_phase1(struct lpfc_hba * phba)6151 lpfc_setup_driver_resource_phase1(struct lpfc_hba *phba)
6152 {
6153 	struct lpfc_sli *psli = &phba->sli;
6154 
6155 	/*
6156 	 * Driver resources common to all SLI revisions
6157 	 */
6158 	atomic_set(&phba->fast_event_count, 0);
6159 	spin_lock_init(&phba->hbalock);
6160 
6161 	/* Initialize ndlp management spinlock */
6162 	spin_lock_init(&phba->ndlp_lock);
6163 
6164 	/* Initialize port_list spinlock */
6165 	spin_lock_init(&phba->port_list_lock);
6166 	INIT_LIST_HEAD(&phba->port_list);
6167 
6168 	INIT_LIST_HEAD(&phba->work_list);
6169 	init_waitqueue_head(&phba->wait_4_mlo_m_q);
6170 
6171 	/* Initialize the wait queue head for the kernel thread */
6172 	init_waitqueue_head(&phba->work_waitq);
6173 
6174 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6175 			"1403 Protocols supported %s %s %s\n",
6176 			((phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) ?
6177 				"SCSI" : " "),
6178 			((phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) ?
6179 				"NVME" : " "),
6180 			(phba->nvmet_support ? "NVMET" : " "));
6181 
6182 	/* Initialize the IO buffer list used by driver for SLI3 SCSI */
6183 	spin_lock_init(&phba->scsi_buf_list_get_lock);
6184 	INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_get);
6185 	spin_lock_init(&phba->scsi_buf_list_put_lock);
6186 	INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put);
6187 
6188 	/* Initialize the fabric iocb list */
6189 	INIT_LIST_HEAD(&phba->fabric_iocb_list);
6190 
6191 	/* Initialize list to save ELS buffers */
6192 	INIT_LIST_HEAD(&phba->elsbuf);
6193 
6194 	/* Initialize FCF connection rec list */
6195 	INIT_LIST_HEAD(&phba->fcf_conn_rec_list);
6196 
6197 	/* Initialize OAS configuration list */
6198 	spin_lock_init(&phba->devicelock);
6199 	INIT_LIST_HEAD(&phba->luns);
6200 
6201 	/* MBOX heartbeat timer */
6202 	timer_setup(&psli->mbox_tmo, lpfc_mbox_timeout, 0);
6203 	/* Fabric block timer */
6204 	timer_setup(&phba->fabric_block_timer, lpfc_fabric_block_timeout, 0);
6205 	/* EA polling mode timer */
6206 	timer_setup(&phba->eratt_poll, lpfc_poll_eratt, 0);
6207 	/* Heartbeat timer */
6208 	timer_setup(&phba->hb_tmofunc, lpfc_hb_timeout, 0);
6209 
6210 	INIT_DELAYED_WORK(&phba->eq_delay_work, lpfc_hb_eq_delay_work);
6211 
6212 	return 0;
6213 }
6214 
6215 /**
6216  * lpfc_sli_driver_resource_setup - Setup driver internal resources for SLI3 dev
6217  * @phba: pointer to lpfc hba data structure.
6218  *
6219  * This routine is invoked to set up the driver internal resources specific to
6220  * support the SLI-3 HBA device it attached to.
6221  *
6222  * Return codes
6223  * 0 - successful
6224  * other values - error
6225  **/
6226 static int
lpfc_sli_driver_resource_setup(struct lpfc_hba * phba)6227 lpfc_sli_driver_resource_setup(struct lpfc_hba *phba)
6228 {
6229 	int rc, entry_sz;
6230 
6231 	/*
6232 	 * Initialize timers used by driver
6233 	 */
6234 
6235 	/* FCP polling mode timer */
6236 	timer_setup(&phba->fcp_poll_timer, lpfc_poll_timeout, 0);
6237 
6238 	/* Host attention work mask setup */
6239 	phba->work_ha_mask = (HA_ERATT | HA_MBATT | HA_LATT);
6240 	phba->work_ha_mask |= (HA_RXMASK << (LPFC_ELS_RING * 4));
6241 
6242 	/* Get all the module params for configuring this host */
6243 	lpfc_get_cfgparam(phba);
6244 	/* Set up phase-1 common device driver resources */
6245 
6246 	rc = lpfc_setup_driver_resource_phase1(phba);
6247 	if (rc)
6248 		return -ENODEV;
6249 
6250 	if (phba->pcidev->device == PCI_DEVICE_ID_HORNET) {
6251 		phba->menlo_flag |= HBA_MENLO_SUPPORT;
6252 		/* check for menlo minimum sg count */
6253 		if (phba->cfg_sg_seg_cnt < LPFC_DEFAULT_MENLO_SG_SEG_CNT)
6254 			phba->cfg_sg_seg_cnt = LPFC_DEFAULT_MENLO_SG_SEG_CNT;
6255 	}
6256 
6257 	if (!phba->sli.sli3_ring)
6258 		phba->sli.sli3_ring = kcalloc(LPFC_SLI3_MAX_RING,
6259 					      sizeof(struct lpfc_sli_ring),
6260 					      GFP_KERNEL);
6261 	if (!phba->sli.sli3_ring)
6262 		return -ENOMEM;
6263 
6264 	/*
6265 	 * Since lpfc_sg_seg_cnt is module parameter, the sg_dma_buf_size
6266 	 * used to create the sg_dma_buf_pool must be dynamically calculated.
6267 	 */
6268 
6269 	/* Initialize the host templates the configured values. */
6270 	lpfc_vport_template.sg_tablesize = phba->cfg_sg_seg_cnt;
6271 	lpfc_template_no_hr.sg_tablesize = phba->cfg_sg_seg_cnt;
6272 	lpfc_template.sg_tablesize = phba->cfg_sg_seg_cnt;
6273 
6274 	if (phba->sli_rev == LPFC_SLI_REV4)
6275 		entry_sz = sizeof(struct sli4_sge);
6276 	else
6277 		entry_sz = sizeof(struct ulp_bde64);
6278 
6279 	/* There are going to be 2 reserved BDEs: 1 FCP cmnd + 1 FCP rsp */
6280 	if (phba->cfg_enable_bg) {
6281 		/*
6282 		 * The scsi_buf for a T10-DIF I/O will hold the FCP cmnd,
6283 		 * the FCP rsp, and a BDE for each. Sice we have no control
6284 		 * over how many protection data segments the SCSI Layer
6285 		 * will hand us (ie: there could be one for every block
6286 		 * in the IO), we just allocate enough BDEs to accomidate
6287 		 * our max amount and we need to limit lpfc_sg_seg_cnt to
6288 		 * minimize the risk of running out.
6289 		 */
6290 		phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
6291 			sizeof(struct fcp_rsp) +
6292 			(LPFC_MAX_SG_SEG_CNT * entry_sz);
6293 
6294 		if (phba->cfg_sg_seg_cnt > LPFC_MAX_SG_SEG_CNT_DIF)
6295 			phba->cfg_sg_seg_cnt = LPFC_MAX_SG_SEG_CNT_DIF;
6296 
6297 		/* Total BDEs in BPL for scsi_sg_list and scsi_sg_prot_list */
6298 		phba->cfg_total_seg_cnt = LPFC_MAX_SG_SEG_CNT;
6299 	} else {
6300 		/*
6301 		 * The scsi_buf for a regular I/O will hold the FCP cmnd,
6302 		 * the FCP rsp, a BDE for each, and a BDE for up to
6303 		 * cfg_sg_seg_cnt data segments.
6304 		 */
6305 		phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
6306 			sizeof(struct fcp_rsp) +
6307 			((phba->cfg_sg_seg_cnt + 2) * entry_sz);
6308 
6309 		/* Total BDEs in BPL for scsi_sg_list */
6310 		phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + 2;
6311 	}
6312 
6313 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
6314 			"9088 sg_tablesize:%d dmabuf_size:%d total_bde:%d\n",
6315 			phba->cfg_sg_seg_cnt, phba->cfg_sg_dma_buf_size,
6316 			phba->cfg_total_seg_cnt);
6317 
6318 	phba->max_vpi = LPFC_MAX_VPI;
6319 	/* This will be set to correct value after config_port mbox */
6320 	phba->max_vports = 0;
6321 
6322 	/*
6323 	 * Initialize the SLI Layer to run with lpfc HBAs.
6324 	 */
6325 	lpfc_sli_setup(phba);
6326 	lpfc_sli_queue_init(phba);
6327 
6328 	/* Allocate device driver memory */
6329 	if (lpfc_mem_alloc(phba, BPL_ALIGN_SZ))
6330 		return -ENOMEM;
6331 
6332 	phba->lpfc_sg_dma_buf_pool =
6333 		dma_pool_create("lpfc_sg_dma_buf_pool",
6334 				&phba->pcidev->dev, phba->cfg_sg_dma_buf_size,
6335 				BPL_ALIGN_SZ, 0);
6336 
6337 	if (!phba->lpfc_sg_dma_buf_pool)
6338 		goto fail_free_mem;
6339 
6340 	phba->lpfc_cmd_rsp_buf_pool =
6341 			dma_pool_create("lpfc_cmd_rsp_buf_pool",
6342 					&phba->pcidev->dev,
6343 					sizeof(struct fcp_cmnd) +
6344 					sizeof(struct fcp_rsp),
6345 					BPL_ALIGN_SZ, 0);
6346 
6347 	if (!phba->lpfc_cmd_rsp_buf_pool)
6348 		goto fail_free_dma_buf_pool;
6349 
6350 	/*
6351 	 * Enable sr-iov virtual functions if supported and configured
6352 	 * through the module parameter.
6353 	 */
6354 	if (phba->cfg_sriov_nr_virtfn > 0) {
6355 		rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
6356 						 phba->cfg_sriov_nr_virtfn);
6357 		if (rc) {
6358 			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6359 					"2808 Requested number of SR-IOV "
6360 					"virtual functions (%d) is not "
6361 					"supported\n",
6362 					phba->cfg_sriov_nr_virtfn);
6363 			phba->cfg_sriov_nr_virtfn = 0;
6364 		}
6365 	}
6366 
6367 	return 0;
6368 
6369 fail_free_dma_buf_pool:
6370 	dma_pool_destroy(phba->lpfc_sg_dma_buf_pool);
6371 	phba->lpfc_sg_dma_buf_pool = NULL;
6372 fail_free_mem:
6373 	lpfc_mem_free(phba);
6374 	return -ENOMEM;
6375 }
6376 
6377 /**
6378  * lpfc_sli_driver_resource_unset - Unset drvr internal resources for SLI3 dev
6379  * @phba: pointer to lpfc hba data structure.
6380  *
6381  * This routine is invoked to unset the driver internal resources set up
6382  * specific for supporting the SLI-3 HBA device it attached to.
6383  **/
6384 static void
lpfc_sli_driver_resource_unset(struct lpfc_hba * phba)6385 lpfc_sli_driver_resource_unset(struct lpfc_hba *phba)
6386 {
6387 	/* Free device driver memory allocated */
6388 	lpfc_mem_free_all(phba);
6389 
6390 	return;
6391 }
6392 
6393 /**
6394  * lpfc_sli4_driver_resource_setup - Setup drvr internal resources for SLI4 dev
6395  * @phba: pointer to lpfc hba data structure.
6396  *
6397  * This routine is invoked to set up the driver internal resources specific to
6398  * support the SLI-4 HBA device it attached to.
6399  *
6400  * Return codes
6401  * 	0 - successful
6402  * 	other values - error
6403  **/
6404 static int
lpfc_sli4_driver_resource_setup(struct lpfc_hba * phba)6405 lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
6406 {
6407 	LPFC_MBOXQ_t *mboxq;
6408 	MAILBOX_t *mb;
6409 	int rc, i, max_buf_size;
6410 	uint8_t pn_page[LPFC_MAX_SUPPORTED_PAGES] = {0};
6411 	struct lpfc_mqe *mqe;
6412 	int longs;
6413 	int extra;
6414 	uint64_t wwn;
6415 	u32 if_type;
6416 	u32 if_fam;
6417 
6418 	phba->sli4_hba.num_present_cpu = lpfc_present_cpu;
6419 	phba->sli4_hba.num_possible_cpu = num_possible_cpus();
6420 	phba->sli4_hba.curr_disp_cpu = 0;
6421 
6422 	/* Get all the module params for configuring this host */
6423 	lpfc_get_cfgparam(phba);
6424 
6425 	/* Set up phase-1 common device driver resources */
6426 	rc = lpfc_setup_driver_resource_phase1(phba);
6427 	if (rc)
6428 		return -ENODEV;
6429 
6430 	/* Before proceed, wait for POST done and device ready */
6431 	rc = lpfc_sli4_post_status_check(phba);
6432 	if (rc)
6433 		return -ENODEV;
6434 
6435 	/* Allocate all driver workqueues here */
6436 
6437 	/* The lpfc_wq workqueue for deferred irq use */
6438 	phba->wq = alloc_workqueue("lpfc_wq", WQ_MEM_RECLAIM, 0);
6439 
6440 	/*
6441 	 * Initialize timers used by driver
6442 	 */
6443 
6444 	timer_setup(&phba->rrq_tmr, lpfc_rrq_timeout, 0);
6445 
6446 	/* FCF rediscover timer */
6447 	timer_setup(&phba->fcf.redisc_wait, lpfc_sli4_fcf_redisc_wait_tmo, 0);
6448 
6449 	/*
6450 	 * Control structure for handling external multi-buffer mailbox
6451 	 * command pass-through.
6452 	 */
6453 	memset((uint8_t *)&phba->mbox_ext_buf_ctx, 0,
6454 		sizeof(struct lpfc_mbox_ext_buf_ctx));
6455 	INIT_LIST_HEAD(&phba->mbox_ext_buf_ctx.ext_dmabuf_list);
6456 
6457 	phba->max_vpi = LPFC_MAX_VPI;
6458 
6459 	/* This will be set to correct value after the read_config mbox */
6460 	phba->max_vports = 0;
6461 
6462 	/* Program the default value of vlan_id and fc_map */
6463 	phba->valid_vlan = 0;
6464 	phba->fc_map[0] = LPFC_FCOE_FCF_MAP0;
6465 	phba->fc_map[1] = LPFC_FCOE_FCF_MAP1;
6466 	phba->fc_map[2] = LPFC_FCOE_FCF_MAP2;
6467 
6468 	/*
6469 	 * For SLI4, instead of using ring 0 (LPFC_FCP_RING) for FCP commands
6470 	 * we will associate a new ring, for each EQ/CQ/WQ tuple.
6471 	 * The WQ create will allocate the ring.
6472 	 */
6473 
6474 	/* Initialize buffer queue management fields */
6475 	INIT_LIST_HEAD(&phba->hbqs[LPFC_ELS_HBQ].hbq_buffer_list);
6476 	phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_sli4_rb_alloc;
6477 	phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_sli4_rb_free;
6478 
6479 	/*
6480 	 * Initialize the SLI Layer to run with lpfc SLI4 HBAs.
6481 	 */
6482 	/* Initialize the Abort buffer list used by driver */
6483 	spin_lock_init(&phba->sli4_hba.abts_io_buf_list_lock);
6484 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_io_buf_list);
6485 
6486 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
6487 		/* Initialize the Abort nvme buffer list used by driver */
6488 		spin_lock_init(&phba->sli4_hba.abts_nvmet_buf_list_lock);
6489 		INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
6490 		INIT_LIST_HEAD(&phba->sli4_hba.lpfc_nvmet_io_wait_list);
6491 		spin_lock_init(&phba->sli4_hba.t_active_list_lock);
6492 		INIT_LIST_HEAD(&phba->sli4_hba.t_active_ctx_list);
6493 	}
6494 
6495 	/* This abort list used by worker thread */
6496 	spin_lock_init(&phba->sli4_hba.sgl_list_lock);
6497 	spin_lock_init(&phba->sli4_hba.nvmet_io_wait_lock);
6498 
6499 	/*
6500 	 * Initialize driver internal slow-path work queues
6501 	 */
6502 
6503 	/* Driver internel slow-path CQ Event pool */
6504 	INIT_LIST_HEAD(&phba->sli4_hba.sp_cqe_event_pool);
6505 	/* Response IOCB work queue list */
6506 	INIT_LIST_HEAD(&phba->sli4_hba.sp_queue_event);
6507 	/* Asynchronous event CQ Event work queue list */
6508 	INIT_LIST_HEAD(&phba->sli4_hba.sp_asynce_work_queue);
6509 	/* Fast-path XRI aborted CQ Event work queue list */
6510 	INIT_LIST_HEAD(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue);
6511 	/* Slow-path XRI aborted CQ Event work queue list */
6512 	INIT_LIST_HEAD(&phba->sli4_hba.sp_els_xri_aborted_work_queue);
6513 	/* Receive queue CQ Event work queue list */
6514 	INIT_LIST_HEAD(&phba->sli4_hba.sp_unsol_work_queue);
6515 
6516 	/* Initialize extent block lists. */
6517 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_blk_list);
6518 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_xri_blk_list);
6519 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_vfi_blk_list);
6520 	INIT_LIST_HEAD(&phba->lpfc_vpi_blk_list);
6521 
6522 	/* Initialize mboxq lists. If the early init routines fail
6523 	 * these lists need to be correctly initialized.
6524 	 */
6525 	INIT_LIST_HEAD(&phba->sli.mboxq);
6526 	INIT_LIST_HEAD(&phba->sli.mboxq_cmpl);
6527 
6528 	/* initialize optic_state to 0xFF */
6529 	phba->sli4_hba.lnk_info.optic_state = 0xff;
6530 
6531 	/* Allocate device driver memory */
6532 	rc = lpfc_mem_alloc(phba, SGL_ALIGN_SZ);
6533 	if (rc)
6534 		return -ENOMEM;
6535 
6536 	/* IF Type 2 ports get initialized now. */
6537 	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
6538 	    LPFC_SLI_INTF_IF_TYPE_2) {
6539 		rc = lpfc_pci_function_reset(phba);
6540 		if (unlikely(rc)) {
6541 			rc = -ENODEV;
6542 			goto out_free_mem;
6543 		}
6544 		phba->temp_sensor_support = 1;
6545 	}
6546 
6547 	/* Create the bootstrap mailbox command */
6548 	rc = lpfc_create_bootstrap_mbox(phba);
6549 	if (unlikely(rc))
6550 		goto out_free_mem;
6551 
6552 	/* Set up the host's endian order with the device. */
6553 	rc = lpfc_setup_endian_order(phba);
6554 	if (unlikely(rc))
6555 		goto out_free_bsmbx;
6556 
6557 	/* Set up the hba's configuration parameters. */
6558 	rc = lpfc_sli4_read_config(phba);
6559 	if (unlikely(rc))
6560 		goto out_free_bsmbx;
6561 	rc = lpfc_mem_alloc_active_rrq_pool_s4(phba);
6562 	if (unlikely(rc))
6563 		goto out_free_bsmbx;
6564 
6565 	/* IF Type 0 ports get initialized now. */
6566 	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
6567 	    LPFC_SLI_INTF_IF_TYPE_0) {
6568 		rc = lpfc_pci_function_reset(phba);
6569 		if (unlikely(rc))
6570 			goto out_free_bsmbx;
6571 	}
6572 
6573 	mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
6574 						       GFP_KERNEL);
6575 	if (!mboxq) {
6576 		rc = -ENOMEM;
6577 		goto out_free_bsmbx;
6578 	}
6579 
6580 	/* Check for NVMET being configured */
6581 	phba->nvmet_support = 0;
6582 	if (lpfc_enable_nvmet_cnt) {
6583 
6584 		/* First get WWN of HBA instance */
6585 		lpfc_read_nv(phba, mboxq);
6586 		rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
6587 		if (rc != MBX_SUCCESS) {
6588 			lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6589 					"6016 Mailbox failed , mbxCmd x%x "
6590 					"READ_NV, mbxStatus x%x\n",
6591 					bf_get(lpfc_mqe_command, &mboxq->u.mqe),
6592 					bf_get(lpfc_mqe_status, &mboxq->u.mqe));
6593 			mempool_free(mboxq, phba->mbox_mem_pool);
6594 			rc = -EIO;
6595 			goto out_free_bsmbx;
6596 		}
6597 		mb = &mboxq->u.mb;
6598 		memcpy(&wwn, (char *)mb->un.varRDnvp.nodename,
6599 		       sizeof(uint64_t));
6600 		wwn = cpu_to_be64(wwn);
6601 		phba->sli4_hba.wwnn.u.name = wwn;
6602 		memcpy(&wwn, (char *)mb->un.varRDnvp.portname,
6603 		       sizeof(uint64_t));
6604 		/* wwn is WWPN of HBA instance */
6605 		wwn = cpu_to_be64(wwn);
6606 		phba->sli4_hba.wwpn.u.name = wwn;
6607 
6608 		/* Check to see if it matches any module parameter */
6609 		for (i = 0; i < lpfc_enable_nvmet_cnt; i++) {
6610 			if (wwn == lpfc_enable_nvmet[i]) {
6611 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
6612 				if (lpfc_nvmet_mem_alloc(phba))
6613 					break;
6614 
6615 				phba->nvmet_support = 1; /* a match */
6616 
6617 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6618 						"6017 NVME Target %016llx\n",
6619 						wwn);
6620 #else
6621 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6622 						"6021 Can't enable NVME Target."
6623 						" NVME_TARGET_FC infrastructure"
6624 						" is not in kernel\n");
6625 #endif
6626 				/* Not supported for NVMET */
6627 				phba->cfg_xri_rebalancing = 0;
6628 				break;
6629 			}
6630 		}
6631 	}
6632 
6633 	lpfc_nvme_mod_param_dep(phba);
6634 
6635 	/* Get the Supported Pages if PORT_CAPABILITIES is supported by port. */
6636 	lpfc_supported_pages(mboxq);
6637 	rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
6638 	if (!rc) {
6639 		mqe = &mboxq->u.mqe;
6640 		memcpy(&pn_page[0], ((uint8_t *)&mqe->un.supp_pages.word3),
6641 		       LPFC_MAX_SUPPORTED_PAGES);
6642 		for (i = 0; i < LPFC_MAX_SUPPORTED_PAGES; i++) {
6643 			switch (pn_page[i]) {
6644 			case LPFC_SLI4_PARAMETERS:
6645 				phba->sli4_hba.pc_sli4_params.supported = 1;
6646 				break;
6647 			default:
6648 				break;
6649 			}
6650 		}
6651 		/* Read the port's SLI4 Parameters capabilities if supported. */
6652 		if (phba->sli4_hba.pc_sli4_params.supported)
6653 			rc = lpfc_pc_sli4_params_get(phba, mboxq);
6654 		if (rc) {
6655 			mempool_free(mboxq, phba->mbox_mem_pool);
6656 			rc = -EIO;
6657 			goto out_free_bsmbx;
6658 		}
6659 	}
6660 
6661 	/*
6662 	 * Get sli4 parameters that override parameters from Port capabilities.
6663 	 * If this call fails, it isn't critical unless the SLI4 parameters come
6664 	 * back in conflict.
6665 	 */
6666 	rc = lpfc_get_sli4_parameters(phba, mboxq);
6667 	if (rc) {
6668 		if_type = bf_get(lpfc_sli_intf_if_type,
6669 				 &phba->sli4_hba.sli_intf);
6670 		if_fam = bf_get(lpfc_sli_intf_sli_family,
6671 				&phba->sli4_hba.sli_intf);
6672 		if (phba->sli4_hba.extents_in_use &&
6673 		    phba->sli4_hba.rpi_hdrs_in_use) {
6674 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6675 				"2999 Unsupported SLI4 Parameters "
6676 				"Extents and RPI headers enabled.\n");
6677 			if (if_type == LPFC_SLI_INTF_IF_TYPE_0 &&
6678 			    if_fam ==  LPFC_SLI_INTF_FAMILY_BE2) {
6679 				mempool_free(mboxq, phba->mbox_mem_pool);
6680 				rc = -EIO;
6681 				goto out_free_bsmbx;
6682 			}
6683 		}
6684 		if (!(if_type == LPFC_SLI_INTF_IF_TYPE_0 &&
6685 		      if_fam == LPFC_SLI_INTF_FAMILY_BE2)) {
6686 			mempool_free(mboxq, phba->mbox_mem_pool);
6687 			rc = -EIO;
6688 			goto out_free_bsmbx;
6689 		}
6690 	}
6691 
6692 	/*
6693 	 * 1 for cmd, 1 for rsp, NVME adds an extra one
6694 	 * for boundary conditions in its max_sgl_segment template.
6695 	 */
6696 	extra = 2;
6697 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
6698 		extra++;
6699 
6700 	/*
6701 	 * It doesn't matter what family our adapter is in, we are
6702 	 * limited to 2 Pages, 512 SGEs, for our SGL.
6703 	 * There are going to be 2 reserved SGEs: 1 FCP cmnd + 1 FCP rsp
6704 	 */
6705 	max_buf_size = (2 * SLI4_PAGE_SIZE);
6706 
6707 	/*
6708 	 * Since lpfc_sg_seg_cnt is module param, the sg_dma_buf_size
6709 	 * used to create the sg_dma_buf_pool must be calculated.
6710 	 */
6711 	if (phba->sli3_options & LPFC_SLI3_BG_ENABLED) {
6712 		/* Both cfg_enable_bg and cfg_external_dif code paths */
6713 
6714 		/*
6715 		 * The scsi_buf for a T10-DIF I/O holds the FCP cmnd,
6716 		 * the FCP rsp, and a SGE. Sice we have no control
6717 		 * over how many protection segments the SCSI Layer
6718 		 * will hand us (ie: there could be one for every block
6719 		 * in the IO), just allocate enough SGEs to accomidate
6720 		 * our max amount and we need to limit lpfc_sg_seg_cnt
6721 		 * to minimize the risk of running out.
6722 		 */
6723 		phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
6724 				sizeof(struct fcp_rsp) + max_buf_size;
6725 
6726 		/* Total SGEs for scsi_sg_list and scsi_sg_prot_list */
6727 		phba->cfg_total_seg_cnt = LPFC_MAX_SGL_SEG_CNT;
6728 
6729 		/*
6730 		 * If supporting DIF, reduce the seg count for scsi to
6731 		 * allow room for the DIF sges.
6732 		 */
6733 		if (phba->cfg_enable_bg &&
6734 		    phba->cfg_sg_seg_cnt > LPFC_MAX_BG_SLI4_SEG_CNT_DIF)
6735 			phba->cfg_scsi_seg_cnt = LPFC_MAX_BG_SLI4_SEG_CNT_DIF;
6736 		else
6737 			phba->cfg_scsi_seg_cnt = phba->cfg_sg_seg_cnt;
6738 
6739 	} else {
6740 		/*
6741 		 * The scsi_buf for a regular I/O holds the FCP cmnd,
6742 		 * the FCP rsp, a SGE for each, and a SGE for up to
6743 		 * cfg_sg_seg_cnt data segments.
6744 		 */
6745 		phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
6746 				sizeof(struct fcp_rsp) +
6747 				((phba->cfg_sg_seg_cnt + extra) *
6748 				sizeof(struct sli4_sge));
6749 
6750 		/* Total SGEs for scsi_sg_list */
6751 		phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + extra;
6752 		phba->cfg_scsi_seg_cnt = phba->cfg_sg_seg_cnt;
6753 
6754 		/*
6755 		 * NOTE: if (phba->cfg_sg_seg_cnt + extra) <= 256 we only
6756 		 * need to post 1 page for the SGL.
6757 		 */
6758 	}
6759 
6760 	if (phba->cfg_xpsgl && !phba->nvmet_support)
6761 		phba->cfg_sg_dma_buf_size = LPFC_DEFAULT_XPSGL_SIZE;
6762 	else if (phba->cfg_sg_dma_buf_size  <= LPFC_MIN_SG_SLI4_BUF_SZ)
6763 		phba->cfg_sg_dma_buf_size = LPFC_MIN_SG_SLI4_BUF_SZ;
6764 	else
6765 		phba->cfg_sg_dma_buf_size =
6766 				SLI4_PAGE_ALIGN(phba->cfg_sg_dma_buf_size);
6767 
6768 	phba->border_sge_num = phba->cfg_sg_dma_buf_size /
6769 			       sizeof(struct sli4_sge);
6770 
6771 	/* Limit to LPFC_MAX_NVME_SEG_CNT for NVME. */
6772 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
6773 		if (phba->cfg_sg_seg_cnt > LPFC_MAX_NVME_SEG_CNT) {
6774 			lpfc_printf_log(phba, KERN_INFO, LOG_NVME | LOG_INIT,
6775 					"6300 Reducing NVME sg segment "
6776 					"cnt to %d\n",
6777 					LPFC_MAX_NVME_SEG_CNT);
6778 			phba->cfg_nvme_seg_cnt = LPFC_MAX_NVME_SEG_CNT;
6779 		} else
6780 			phba->cfg_nvme_seg_cnt = phba->cfg_sg_seg_cnt;
6781 	}
6782 
6783 	/* Initialize the host templates with the updated values. */
6784 	lpfc_vport_template.sg_tablesize = phba->cfg_scsi_seg_cnt;
6785 	lpfc_template.sg_tablesize = phba->cfg_scsi_seg_cnt;
6786 	lpfc_template_no_hr.sg_tablesize = phba->cfg_scsi_seg_cnt;
6787 
6788 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
6789 			"9087 sg_seg_cnt:%d dmabuf_size:%d "
6790 			"total:%d scsi:%d nvme:%d\n",
6791 			phba->cfg_sg_seg_cnt, phba->cfg_sg_dma_buf_size,
6792 			phba->cfg_total_seg_cnt,  phba->cfg_scsi_seg_cnt,
6793 			phba->cfg_nvme_seg_cnt);
6794 
6795 	if (phba->cfg_sg_dma_buf_size < SLI4_PAGE_SIZE)
6796 		i = phba->cfg_sg_dma_buf_size;
6797 	else
6798 		i = SLI4_PAGE_SIZE;
6799 
6800 	phba->lpfc_sg_dma_buf_pool =
6801 			dma_pool_create("lpfc_sg_dma_buf_pool",
6802 					&phba->pcidev->dev,
6803 					phba->cfg_sg_dma_buf_size,
6804 					i, 0);
6805 	if (!phba->lpfc_sg_dma_buf_pool)
6806 		goto out_free_bsmbx;
6807 
6808 	phba->lpfc_cmd_rsp_buf_pool =
6809 			dma_pool_create("lpfc_cmd_rsp_buf_pool",
6810 					&phba->pcidev->dev,
6811 					sizeof(struct fcp_cmnd) +
6812 					sizeof(struct fcp_rsp),
6813 					i, 0);
6814 	if (!phba->lpfc_cmd_rsp_buf_pool)
6815 		goto out_free_sg_dma_buf;
6816 
6817 	mempool_free(mboxq, phba->mbox_mem_pool);
6818 
6819 	/* Verify OAS is supported */
6820 	lpfc_sli4_oas_verify(phba);
6821 
6822 	/* Verify RAS support on adapter */
6823 	lpfc_sli4_ras_init(phba);
6824 
6825 	/* Verify all the SLI4 queues */
6826 	rc = lpfc_sli4_queue_verify(phba);
6827 	if (rc)
6828 		goto out_free_cmd_rsp_buf;
6829 
6830 	/* Create driver internal CQE event pool */
6831 	rc = lpfc_sli4_cq_event_pool_create(phba);
6832 	if (rc)
6833 		goto out_free_cmd_rsp_buf;
6834 
6835 	/* Initialize sgl lists per host */
6836 	lpfc_init_sgl_list(phba);
6837 
6838 	/* Allocate and initialize active sgl array */
6839 	rc = lpfc_init_active_sgl_array(phba);
6840 	if (rc) {
6841 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6842 				"1430 Failed to initialize sgl list.\n");
6843 		goto out_destroy_cq_event_pool;
6844 	}
6845 	rc = lpfc_sli4_init_rpi_hdrs(phba);
6846 	if (rc) {
6847 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6848 				"1432 Failed to initialize rpi headers.\n");
6849 		goto out_free_active_sgl;
6850 	}
6851 
6852 	/* Allocate eligible FCF bmask memory for FCF roundrobin failover */
6853 	longs = (LPFC_SLI4_FCF_TBL_INDX_MAX + BITS_PER_LONG - 1)/BITS_PER_LONG;
6854 	phba->fcf.fcf_rr_bmask = kcalloc(longs, sizeof(unsigned long),
6855 					 GFP_KERNEL);
6856 	if (!phba->fcf.fcf_rr_bmask) {
6857 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6858 				"2759 Failed allocate memory for FCF round "
6859 				"robin failover bmask\n");
6860 		rc = -ENOMEM;
6861 		goto out_remove_rpi_hdrs;
6862 	}
6863 
6864 	phba->sli4_hba.hba_eq_hdl = kcalloc(phba->cfg_irq_chann,
6865 					    sizeof(struct lpfc_hba_eq_hdl),
6866 					    GFP_KERNEL);
6867 	if (!phba->sli4_hba.hba_eq_hdl) {
6868 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6869 				"2572 Failed allocate memory for "
6870 				"fast-path per-EQ handle array\n");
6871 		rc = -ENOMEM;
6872 		goto out_free_fcf_rr_bmask;
6873 	}
6874 
6875 	phba->sli4_hba.cpu_map = kcalloc(phba->sli4_hba.num_possible_cpu,
6876 					sizeof(struct lpfc_vector_map_info),
6877 					GFP_KERNEL);
6878 	if (!phba->sli4_hba.cpu_map) {
6879 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6880 				"3327 Failed allocate memory for msi-x "
6881 				"interrupt vector mapping\n");
6882 		rc = -ENOMEM;
6883 		goto out_free_hba_eq_hdl;
6884 	}
6885 
6886 	phba->sli4_hba.eq_info = alloc_percpu(struct lpfc_eq_intr_info);
6887 	if (!phba->sli4_hba.eq_info) {
6888 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6889 				"3321 Failed allocation for per_cpu stats\n");
6890 		rc = -ENOMEM;
6891 		goto out_free_hba_cpu_map;
6892 	}
6893 	/*
6894 	 * Enable sr-iov virtual functions if supported and configured
6895 	 * through the module parameter.
6896 	 */
6897 	if (phba->cfg_sriov_nr_virtfn > 0) {
6898 		rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
6899 						 phba->cfg_sriov_nr_virtfn);
6900 		if (rc) {
6901 			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6902 					"3020 Requested number of SR-IOV "
6903 					"virtual functions (%d) is not "
6904 					"supported\n",
6905 					phba->cfg_sriov_nr_virtfn);
6906 			phba->cfg_sriov_nr_virtfn = 0;
6907 		}
6908 	}
6909 
6910 	return 0;
6911 
6912 out_free_hba_cpu_map:
6913 	kfree(phba->sli4_hba.cpu_map);
6914 out_free_hba_eq_hdl:
6915 	kfree(phba->sli4_hba.hba_eq_hdl);
6916 out_free_fcf_rr_bmask:
6917 	kfree(phba->fcf.fcf_rr_bmask);
6918 out_remove_rpi_hdrs:
6919 	lpfc_sli4_remove_rpi_hdrs(phba);
6920 out_free_active_sgl:
6921 	lpfc_free_active_sgl(phba);
6922 out_destroy_cq_event_pool:
6923 	lpfc_sli4_cq_event_pool_destroy(phba);
6924 out_free_cmd_rsp_buf:
6925 	dma_pool_destroy(phba->lpfc_cmd_rsp_buf_pool);
6926 	phba->lpfc_cmd_rsp_buf_pool = NULL;
6927 out_free_sg_dma_buf:
6928 	dma_pool_destroy(phba->lpfc_sg_dma_buf_pool);
6929 	phba->lpfc_sg_dma_buf_pool = NULL;
6930 out_free_bsmbx:
6931 	lpfc_destroy_bootstrap_mbox(phba);
6932 out_free_mem:
6933 	lpfc_mem_free(phba);
6934 	return rc;
6935 }
6936 
6937 /**
6938  * lpfc_sli4_driver_resource_unset - Unset drvr internal resources for SLI4 dev
6939  * @phba: pointer to lpfc hba data structure.
6940  *
6941  * This routine is invoked to unset the driver internal resources set up
6942  * specific for supporting the SLI-4 HBA device it attached to.
6943  **/
6944 static void
lpfc_sli4_driver_resource_unset(struct lpfc_hba * phba)6945 lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba)
6946 {
6947 	struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
6948 
6949 	free_percpu(phba->sli4_hba.eq_info);
6950 
6951 	/* Free memory allocated for msi-x interrupt vector to CPU mapping */
6952 	kfree(phba->sli4_hba.cpu_map);
6953 	phba->sli4_hba.num_possible_cpu = 0;
6954 	phba->sli4_hba.num_present_cpu = 0;
6955 	phba->sli4_hba.curr_disp_cpu = 0;
6956 
6957 	/* Free memory allocated for fast-path work queue handles */
6958 	kfree(phba->sli4_hba.hba_eq_hdl);
6959 
6960 	/* Free the allocated rpi headers. */
6961 	lpfc_sli4_remove_rpi_hdrs(phba);
6962 	lpfc_sli4_remove_rpis(phba);
6963 
6964 	/* Free eligible FCF index bmask */
6965 	kfree(phba->fcf.fcf_rr_bmask);
6966 
6967 	/* Free the ELS sgl list */
6968 	lpfc_free_active_sgl(phba);
6969 	lpfc_free_els_sgl_list(phba);
6970 	lpfc_free_nvmet_sgl_list(phba);
6971 
6972 	/* Free the completion queue EQ event pool */
6973 	lpfc_sli4_cq_event_release_all(phba);
6974 	lpfc_sli4_cq_event_pool_destroy(phba);
6975 
6976 	/* Release resource identifiers. */
6977 	lpfc_sli4_dealloc_resource_identifiers(phba);
6978 
6979 	/* Free the bsmbx region. */
6980 	lpfc_destroy_bootstrap_mbox(phba);
6981 
6982 	/* Free the SLI Layer memory with SLI4 HBAs */
6983 	lpfc_mem_free_all(phba);
6984 
6985 	/* Free the current connect table */
6986 	list_for_each_entry_safe(conn_entry, next_conn_entry,
6987 		&phba->fcf_conn_rec_list, list) {
6988 		list_del_init(&conn_entry->list);
6989 		kfree(conn_entry);
6990 	}
6991 
6992 	return;
6993 }
6994 
6995 /**
6996  * lpfc_init_api_table_setup - Set up init api function jump table
6997  * @phba: The hba struct for which this call is being executed.
6998  * @dev_grp: The HBA PCI-Device group number.
6999  *
7000  * This routine sets up the device INIT interface API function jump table
7001  * in @phba struct.
7002  *
7003  * Returns: 0 - success, -ENODEV - failure.
7004  **/
7005 int
lpfc_init_api_table_setup(struct lpfc_hba * phba,uint8_t dev_grp)7006 lpfc_init_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
7007 {
7008 	phba->lpfc_hba_init_link = lpfc_hba_init_link;
7009 	phba->lpfc_hba_down_link = lpfc_hba_down_link;
7010 	phba->lpfc_selective_reset = lpfc_selective_reset;
7011 	switch (dev_grp) {
7012 	case LPFC_PCI_DEV_LP:
7013 		phba->lpfc_hba_down_post = lpfc_hba_down_post_s3;
7014 		phba->lpfc_handle_eratt = lpfc_handle_eratt_s3;
7015 		phba->lpfc_stop_port = lpfc_stop_port_s3;
7016 		break;
7017 	case LPFC_PCI_DEV_OC:
7018 		phba->lpfc_hba_down_post = lpfc_hba_down_post_s4;
7019 		phba->lpfc_handle_eratt = lpfc_handle_eratt_s4;
7020 		phba->lpfc_stop_port = lpfc_stop_port_s4;
7021 		break;
7022 	default:
7023 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7024 				"1431 Invalid HBA PCI-device group: 0x%x\n",
7025 				dev_grp);
7026 		return -ENODEV;
7027 		break;
7028 	}
7029 	return 0;
7030 }
7031 
7032 /**
7033  * lpfc_setup_driver_resource_phase2 - Phase2 setup driver internal resources.
7034  * @phba: pointer to lpfc hba data structure.
7035  *
7036  * This routine is invoked to set up the driver internal resources after the
7037  * device specific resource setup to support the HBA device it attached to.
7038  *
7039  * Return codes
7040  * 	0 - successful
7041  * 	other values - error
7042  **/
7043 static int
lpfc_setup_driver_resource_phase2(struct lpfc_hba * phba)7044 lpfc_setup_driver_resource_phase2(struct lpfc_hba *phba)
7045 {
7046 	int error;
7047 
7048 	/* Startup the kernel thread for this host adapter. */
7049 	phba->worker_thread = kthread_run(lpfc_do_work, phba,
7050 					  "lpfc_worker_%d", phba->brd_no);
7051 	if (IS_ERR(phba->worker_thread)) {
7052 		error = PTR_ERR(phba->worker_thread);
7053 		return error;
7054 	}
7055 
7056 	return 0;
7057 }
7058 
7059 /**
7060  * lpfc_unset_driver_resource_phase2 - Phase2 unset driver internal resources.
7061  * @phba: pointer to lpfc hba data structure.
7062  *
7063  * This routine is invoked to unset the driver internal resources set up after
7064  * the device specific resource setup for supporting the HBA device it
7065  * attached to.
7066  **/
7067 static void
lpfc_unset_driver_resource_phase2(struct lpfc_hba * phba)7068 lpfc_unset_driver_resource_phase2(struct lpfc_hba *phba)
7069 {
7070 	if (phba->wq) {
7071 		flush_workqueue(phba->wq);
7072 		destroy_workqueue(phba->wq);
7073 		phba->wq = NULL;
7074 	}
7075 
7076 	/* Stop kernel worker thread */
7077 	if (phba->worker_thread)
7078 		kthread_stop(phba->worker_thread);
7079 }
7080 
7081 /**
7082  * lpfc_free_iocb_list - Free iocb list.
7083  * @phba: pointer to lpfc hba data structure.
7084  *
7085  * This routine is invoked to free the driver's IOCB list and memory.
7086  **/
7087 void
lpfc_free_iocb_list(struct lpfc_hba * phba)7088 lpfc_free_iocb_list(struct lpfc_hba *phba)
7089 {
7090 	struct lpfc_iocbq *iocbq_entry = NULL, *iocbq_next = NULL;
7091 
7092 	spin_lock_irq(&phba->hbalock);
7093 	list_for_each_entry_safe(iocbq_entry, iocbq_next,
7094 				 &phba->lpfc_iocb_list, list) {
7095 		list_del(&iocbq_entry->list);
7096 		kfree(iocbq_entry);
7097 		phba->total_iocbq_bufs--;
7098 	}
7099 	spin_unlock_irq(&phba->hbalock);
7100 
7101 	return;
7102 }
7103 
7104 /**
7105  * lpfc_init_iocb_list - Allocate and initialize iocb list.
7106  * @phba: pointer to lpfc hba data structure.
7107  *
7108  * This routine is invoked to allocate and initizlize the driver's IOCB
7109  * list and set up the IOCB tag array accordingly.
7110  *
7111  * Return codes
7112  *	0 - successful
7113  *	other values - error
7114  **/
7115 int
lpfc_init_iocb_list(struct lpfc_hba * phba,int iocb_count)7116 lpfc_init_iocb_list(struct lpfc_hba *phba, int iocb_count)
7117 {
7118 	struct lpfc_iocbq *iocbq_entry = NULL;
7119 	uint16_t iotag;
7120 	int i;
7121 
7122 	/* Initialize and populate the iocb list per host.  */
7123 	INIT_LIST_HEAD(&phba->lpfc_iocb_list);
7124 	for (i = 0; i < iocb_count; i++) {
7125 		iocbq_entry = kzalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL);
7126 		if (iocbq_entry == NULL) {
7127 			printk(KERN_ERR "%s: only allocated %d iocbs of "
7128 				"expected %d count. Unloading driver.\n",
7129 				__func__, i, LPFC_IOCB_LIST_CNT);
7130 			goto out_free_iocbq;
7131 		}
7132 
7133 		iotag = lpfc_sli_next_iotag(phba, iocbq_entry);
7134 		if (iotag == 0) {
7135 			kfree(iocbq_entry);
7136 			printk(KERN_ERR "%s: failed to allocate IOTAG. "
7137 				"Unloading driver.\n", __func__);
7138 			goto out_free_iocbq;
7139 		}
7140 		iocbq_entry->sli4_lxritag = NO_XRI;
7141 		iocbq_entry->sli4_xritag = NO_XRI;
7142 
7143 		spin_lock_irq(&phba->hbalock);
7144 		list_add(&iocbq_entry->list, &phba->lpfc_iocb_list);
7145 		phba->total_iocbq_bufs++;
7146 		spin_unlock_irq(&phba->hbalock);
7147 	}
7148 
7149 	return 0;
7150 
7151 out_free_iocbq:
7152 	lpfc_free_iocb_list(phba);
7153 
7154 	return -ENOMEM;
7155 }
7156 
7157 /**
7158  * lpfc_free_sgl_list - Free a given sgl list.
7159  * @phba: pointer to lpfc hba data structure.
7160  * @sglq_list: pointer to the head of sgl list.
7161  *
7162  * This routine is invoked to free a give sgl list and memory.
7163  **/
7164 void
lpfc_free_sgl_list(struct lpfc_hba * phba,struct list_head * sglq_list)7165 lpfc_free_sgl_list(struct lpfc_hba *phba, struct list_head *sglq_list)
7166 {
7167 	struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
7168 
7169 	list_for_each_entry_safe(sglq_entry, sglq_next, sglq_list, list) {
7170 		list_del(&sglq_entry->list);
7171 		lpfc_mbuf_free(phba, sglq_entry->virt, sglq_entry->phys);
7172 		kfree(sglq_entry);
7173 	}
7174 }
7175 
7176 /**
7177  * lpfc_free_els_sgl_list - Free els sgl list.
7178  * @phba: pointer to lpfc hba data structure.
7179  *
7180  * This routine is invoked to free the driver's els sgl list and memory.
7181  **/
7182 static void
lpfc_free_els_sgl_list(struct lpfc_hba * phba)7183 lpfc_free_els_sgl_list(struct lpfc_hba *phba)
7184 {
7185 	LIST_HEAD(sglq_list);
7186 
7187 	/* Retrieve all els sgls from driver list */
7188 	spin_lock_irq(&phba->hbalock);
7189 	spin_lock(&phba->sli4_hba.sgl_list_lock);
7190 	list_splice_init(&phba->sli4_hba.lpfc_els_sgl_list, &sglq_list);
7191 	spin_unlock(&phba->sli4_hba.sgl_list_lock);
7192 	spin_unlock_irq(&phba->hbalock);
7193 
7194 	/* Now free the sgl list */
7195 	lpfc_free_sgl_list(phba, &sglq_list);
7196 }
7197 
7198 /**
7199  * lpfc_free_nvmet_sgl_list - Free nvmet sgl list.
7200  * @phba: pointer to lpfc hba data structure.
7201  *
7202  * This routine is invoked to free the driver's nvmet sgl list and memory.
7203  **/
7204 static void
lpfc_free_nvmet_sgl_list(struct lpfc_hba * phba)7205 lpfc_free_nvmet_sgl_list(struct lpfc_hba *phba)
7206 {
7207 	struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
7208 	LIST_HEAD(sglq_list);
7209 
7210 	/* Retrieve all nvmet sgls from driver list */
7211 	spin_lock_irq(&phba->hbalock);
7212 	spin_lock(&phba->sli4_hba.sgl_list_lock);
7213 	list_splice_init(&phba->sli4_hba.lpfc_nvmet_sgl_list, &sglq_list);
7214 	spin_unlock(&phba->sli4_hba.sgl_list_lock);
7215 	spin_unlock_irq(&phba->hbalock);
7216 
7217 	/* Now free the sgl list */
7218 	list_for_each_entry_safe(sglq_entry, sglq_next, &sglq_list, list) {
7219 		list_del(&sglq_entry->list);
7220 		lpfc_nvmet_buf_free(phba, sglq_entry->virt, sglq_entry->phys);
7221 		kfree(sglq_entry);
7222 	}
7223 
7224 	/* Update the nvmet_xri_cnt to reflect no current sgls.
7225 	 * The next initialization cycle sets the count and allocates
7226 	 * the sgls over again.
7227 	 */
7228 	phba->sli4_hba.nvmet_xri_cnt = 0;
7229 }
7230 
7231 /**
7232  * lpfc_init_active_sgl_array - Allocate the buf to track active ELS XRIs.
7233  * @phba: pointer to lpfc hba data structure.
7234  *
7235  * This routine is invoked to allocate the driver's active sgl memory.
7236  * This array will hold the sglq_entry's for active IOs.
7237  **/
7238 static int
lpfc_init_active_sgl_array(struct lpfc_hba * phba)7239 lpfc_init_active_sgl_array(struct lpfc_hba *phba)
7240 {
7241 	int size;
7242 	size = sizeof(struct lpfc_sglq *);
7243 	size *= phba->sli4_hba.max_cfg_param.max_xri;
7244 
7245 	phba->sli4_hba.lpfc_sglq_active_list =
7246 		kzalloc(size, GFP_KERNEL);
7247 	if (!phba->sli4_hba.lpfc_sglq_active_list)
7248 		return -ENOMEM;
7249 	return 0;
7250 }
7251 
7252 /**
7253  * lpfc_free_active_sgl - Free the buf that tracks active ELS XRIs.
7254  * @phba: pointer to lpfc hba data structure.
7255  *
7256  * This routine is invoked to walk through the array of active sglq entries
7257  * and free all of the resources.
7258  * This is just a place holder for now.
7259  **/
7260 static void
lpfc_free_active_sgl(struct lpfc_hba * phba)7261 lpfc_free_active_sgl(struct lpfc_hba *phba)
7262 {
7263 	kfree(phba->sli4_hba.lpfc_sglq_active_list);
7264 }
7265 
7266 /**
7267  * lpfc_init_sgl_list - Allocate and initialize sgl list.
7268  * @phba: pointer to lpfc hba data structure.
7269  *
7270  * This routine is invoked to allocate and initizlize the driver's sgl
7271  * list and set up the sgl xritag tag array accordingly.
7272  *
7273  **/
7274 static void
lpfc_init_sgl_list(struct lpfc_hba * phba)7275 lpfc_init_sgl_list(struct lpfc_hba *phba)
7276 {
7277 	/* Initialize and populate the sglq list per host/VF. */
7278 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_els_sgl_list);
7279 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_els_sgl_list);
7280 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_nvmet_sgl_list);
7281 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
7282 
7283 	/* els xri-sgl book keeping */
7284 	phba->sli4_hba.els_xri_cnt = 0;
7285 
7286 	/* nvme xri-buffer book keeping */
7287 	phba->sli4_hba.io_xri_cnt = 0;
7288 }
7289 
7290 /**
7291  * lpfc_sli4_init_rpi_hdrs - Post the rpi header memory region to the port
7292  * @phba: pointer to lpfc hba data structure.
7293  *
7294  * This routine is invoked to post rpi header templates to the
7295  * port for those SLI4 ports that do not support extents.  This routine
7296  * posts a PAGE_SIZE memory region to the port to hold up to
7297  * PAGE_SIZE modulo 64 rpi context headers.  This is an initialization routine
7298  * and should be called only when interrupts are disabled.
7299  *
7300  * Return codes
7301  * 	0 - successful
7302  *	-ERROR - otherwise.
7303  **/
7304 int
lpfc_sli4_init_rpi_hdrs(struct lpfc_hba * phba)7305 lpfc_sli4_init_rpi_hdrs(struct lpfc_hba *phba)
7306 {
7307 	int rc = 0;
7308 	struct lpfc_rpi_hdr *rpi_hdr;
7309 
7310 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_hdr_list);
7311 	if (!phba->sli4_hba.rpi_hdrs_in_use)
7312 		return rc;
7313 	if (phba->sli4_hba.extents_in_use)
7314 		return -EIO;
7315 
7316 	rpi_hdr = lpfc_sli4_create_rpi_hdr(phba);
7317 	if (!rpi_hdr) {
7318 		lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
7319 				"0391 Error during rpi post operation\n");
7320 		lpfc_sli4_remove_rpis(phba);
7321 		rc = -ENODEV;
7322 	}
7323 
7324 	return rc;
7325 }
7326 
7327 /**
7328  * lpfc_sli4_create_rpi_hdr - Allocate an rpi header memory region
7329  * @phba: pointer to lpfc hba data structure.
7330  *
7331  * This routine is invoked to allocate a single 4KB memory region to
7332  * support rpis and stores them in the phba.  This single region
7333  * provides support for up to 64 rpis.  The region is used globally
7334  * by the device.
7335  *
7336  * Returns:
7337  *   A valid rpi hdr on success.
7338  *   A NULL pointer on any failure.
7339  **/
7340 struct lpfc_rpi_hdr *
lpfc_sli4_create_rpi_hdr(struct lpfc_hba * phba)7341 lpfc_sli4_create_rpi_hdr(struct lpfc_hba *phba)
7342 {
7343 	uint16_t rpi_limit, curr_rpi_range;
7344 	struct lpfc_dmabuf *dmabuf;
7345 	struct lpfc_rpi_hdr *rpi_hdr;
7346 
7347 	/*
7348 	 * If the SLI4 port supports extents, posting the rpi header isn't
7349 	 * required.  Set the expected maximum count and let the actual value
7350 	 * get set when extents are fully allocated.
7351 	 */
7352 	if (!phba->sli4_hba.rpi_hdrs_in_use)
7353 		return NULL;
7354 	if (phba->sli4_hba.extents_in_use)
7355 		return NULL;
7356 
7357 	/* The limit on the logical index is just the max_rpi count. */
7358 	rpi_limit = phba->sli4_hba.max_cfg_param.max_rpi;
7359 
7360 	spin_lock_irq(&phba->hbalock);
7361 	/*
7362 	 * Establish the starting RPI in this header block.  The starting
7363 	 * rpi is normalized to a zero base because the physical rpi is
7364 	 * port based.
7365 	 */
7366 	curr_rpi_range = phba->sli4_hba.next_rpi;
7367 	spin_unlock_irq(&phba->hbalock);
7368 
7369 	/* Reached full RPI range */
7370 	if (curr_rpi_range == rpi_limit)
7371 		return NULL;
7372 
7373 	/*
7374 	 * First allocate the protocol header region for the port.  The
7375 	 * port expects a 4KB DMA-mapped memory region that is 4K aligned.
7376 	 */
7377 	dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
7378 	if (!dmabuf)
7379 		return NULL;
7380 
7381 	dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
7382 					  LPFC_HDR_TEMPLATE_SIZE,
7383 					  &dmabuf->phys, GFP_KERNEL);
7384 	if (!dmabuf->virt) {
7385 		rpi_hdr = NULL;
7386 		goto err_free_dmabuf;
7387 	}
7388 
7389 	if (!IS_ALIGNED(dmabuf->phys, LPFC_HDR_TEMPLATE_SIZE)) {
7390 		rpi_hdr = NULL;
7391 		goto err_free_coherent;
7392 	}
7393 
7394 	/* Save the rpi header data for cleanup later. */
7395 	rpi_hdr = kzalloc(sizeof(struct lpfc_rpi_hdr), GFP_KERNEL);
7396 	if (!rpi_hdr)
7397 		goto err_free_coherent;
7398 
7399 	rpi_hdr->dmabuf = dmabuf;
7400 	rpi_hdr->len = LPFC_HDR_TEMPLATE_SIZE;
7401 	rpi_hdr->page_count = 1;
7402 	spin_lock_irq(&phba->hbalock);
7403 
7404 	/* The rpi_hdr stores the logical index only. */
7405 	rpi_hdr->start_rpi = curr_rpi_range;
7406 	rpi_hdr->next_rpi = phba->sli4_hba.next_rpi + LPFC_RPI_HDR_COUNT;
7407 	list_add_tail(&rpi_hdr->list, &phba->sli4_hba.lpfc_rpi_hdr_list);
7408 
7409 	spin_unlock_irq(&phba->hbalock);
7410 	return rpi_hdr;
7411 
7412  err_free_coherent:
7413 	dma_free_coherent(&phba->pcidev->dev, LPFC_HDR_TEMPLATE_SIZE,
7414 			  dmabuf->virt, dmabuf->phys);
7415  err_free_dmabuf:
7416 	kfree(dmabuf);
7417 	return NULL;
7418 }
7419 
7420 /**
7421  * lpfc_sli4_remove_rpi_hdrs - Remove all rpi header memory regions
7422  * @phba: pointer to lpfc hba data structure.
7423  *
7424  * This routine is invoked to remove all memory resources allocated
7425  * to support rpis for SLI4 ports not supporting extents. This routine
7426  * presumes the caller has released all rpis consumed by fabric or port
7427  * logins and is prepared to have the header pages removed.
7428  **/
7429 void
lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba * phba)7430 lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba *phba)
7431 {
7432 	struct lpfc_rpi_hdr *rpi_hdr, *next_rpi_hdr;
7433 
7434 	if (!phba->sli4_hba.rpi_hdrs_in_use)
7435 		goto exit;
7436 
7437 	list_for_each_entry_safe(rpi_hdr, next_rpi_hdr,
7438 				 &phba->sli4_hba.lpfc_rpi_hdr_list, list) {
7439 		list_del(&rpi_hdr->list);
7440 		dma_free_coherent(&phba->pcidev->dev, rpi_hdr->len,
7441 				  rpi_hdr->dmabuf->virt, rpi_hdr->dmabuf->phys);
7442 		kfree(rpi_hdr->dmabuf);
7443 		kfree(rpi_hdr);
7444 	}
7445  exit:
7446 	/* There are no rpis available to the port now. */
7447 	phba->sli4_hba.next_rpi = 0;
7448 }
7449 
7450 /**
7451  * lpfc_hba_alloc - Allocate driver hba data structure for a device.
7452  * @pdev: pointer to pci device data structure.
7453  *
7454  * This routine is invoked to allocate the driver hba data structure for an
7455  * HBA device. If the allocation is successful, the phba reference to the
7456  * PCI device data structure is set.
7457  *
7458  * Return codes
7459  *      pointer to @phba - successful
7460  *      NULL - error
7461  **/
7462 static struct lpfc_hba *
lpfc_hba_alloc(struct pci_dev * pdev)7463 lpfc_hba_alloc(struct pci_dev *pdev)
7464 {
7465 	struct lpfc_hba *phba;
7466 
7467 	/* Allocate memory for HBA structure */
7468 	phba = kzalloc(sizeof(struct lpfc_hba), GFP_KERNEL);
7469 	if (!phba) {
7470 		dev_err(&pdev->dev, "failed to allocate hba struct\n");
7471 		return NULL;
7472 	}
7473 
7474 	/* Set reference to PCI device in HBA structure */
7475 	phba->pcidev = pdev;
7476 
7477 	/* Assign an unused board number */
7478 	phba->brd_no = lpfc_get_instance();
7479 	if (phba->brd_no < 0) {
7480 		kfree(phba);
7481 		return NULL;
7482 	}
7483 	phba->eratt_poll_interval = LPFC_ERATT_POLL_INTERVAL;
7484 
7485 	spin_lock_init(&phba->ct_ev_lock);
7486 	INIT_LIST_HEAD(&phba->ct_ev_waiters);
7487 
7488 	return phba;
7489 }
7490 
7491 /**
7492  * lpfc_hba_free - Free driver hba data structure with a device.
7493  * @phba: pointer to lpfc hba data structure.
7494  *
7495  * This routine is invoked to free the driver hba data structure with an
7496  * HBA device.
7497  **/
7498 static void
lpfc_hba_free(struct lpfc_hba * phba)7499 lpfc_hba_free(struct lpfc_hba *phba)
7500 {
7501 	if (phba->sli_rev == LPFC_SLI_REV4)
7502 		kfree(phba->sli4_hba.hdwq);
7503 
7504 	/* Release the driver assigned board number */
7505 	idr_remove(&lpfc_hba_index, phba->brd_no);
7506 
7507 	/* Free memory allocated with sli3 rings */
7508 	kfree(phba->sli.sli3_ring);
7509 	phba->sli.sli3_ring = NULL;
7510 
7511 	kfree(phba);
7512 	return;
7513 }
7514 
7515 /**
7516  * lpfc_create_shost - Create hba physical port with associated scsi host.
7517  * @phba: pointer to lpfc hba data structure.
7518  *
7519  * This routine is invoked to create HBA physical port and associate a SCSI
7520  * host with it.
7521  *
7522  * Return codes
7523  *      0 - successful
7524  *      other values - error
7525  **/
7526 static int
lpfc_create_shost(struct lpfc_hba * phba)7527 lpfc_create_shost(struct lpfc_hba *phba)
7528 {
7529 	struct lpfc_vport *vport;
7530 	struct Scsi_Host  *shost;
7531 
7532 	/* Initialize HBA FC structure */
7533 	phba->fc_edtov = FF_DEF_EDTOV;
7534 	phba->fc_ratov = FF_DEF_RATOV;
7535 	phba->fc_altov = FF_DEF_ALTOV;
7536 	phba->fc_arbtov = FF_DEF_ARBTOV;
7537 
7538 	atomic_set(&phba->sdev_cnt, 0);
7539 	vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev);
7540 	if (!vport)
7541 		return -ENODEV;
7542 
7543 	shost = lpfc_shost_from_vport(vport);
7544 	phba->pport = vport;
7545 
7546 	if (phba->nvmet_support) {
7547 		/* Only 1 vport (pport) will support NVME target */
7548 		if (phba->txrdy_payload_pool == NULL) {
7549 			phba->txrdy_payload_pool = dma_pool_create(
7550 				"txrdy_pool", &phba->pcidev->dev,
7551 				TXRDY_PAYLOAD_LEN, 16, 0);
7552 			if (phba->txrdy_payload_pool) {
7553 				phba->targetport = NULL;
7554 				phba->cfg_enable_fc4_type = LPFC_ENABLE_NVME;
7555 				lpfc_printf_log(phba, KERN_INFO,
7556 						LOG_INIT | LOG_NVME_DISC,
7557 						"6076 NVME Target Found\n");
7558 			}
7559 		}
7560 	}
7561 
7562 	lpfc_debugfs_initialize(vport);
7563 	/* Put reference to SCSI host to driver's device private data */
7564 	pci_set_drvdata(phba->pcidev, shost);
7565 
7566 	/*
7567 	 * At this point we are fully registered with PSA. In addition,
7568 	 * any initial discovery should be completed.
7569 	 */
7570 	vport->load_flag |= FC_ALLOW_FDMI;
7571 	if (phba->cfg_enable_SmartSAN ||
7572 	    (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) {
7573 
7574 		/* Setup appropriate attribute masks */
7575 		vport->fdmi_hba_mask = LPFC_FDMI2_HBA_ATTR;
7576 		if (phba->cfg_enable_SmartSAN)
7577 			vport->fdmi_port_mask = LPFC_FDMI2_SMART_ATTR;
7578 		else
7579 			vport->fdmi_port_mask = LPFC_FDMI2_PORT_ATTR;
7580 	}
7581 	return 0;
7582 }
7583 
7584 /**
7585  * lpfc_destroy_shost - Destroy hba physical port with associated scsi host.
7586  * @phba: pointer to lpfc hba data structure.
7587  *
7588  * This routine is invoked to destroy HBA physical port and the associated
7589  * SCSI host.
7590  **/
7591 static void
lpfc_destroy_shost(struct lpfc_hba * phba)7592 lpfc_destroy_shost(struct lpfc_hba *phba)
7593 {
7594 	struct lpfc_vport *vport = phba->pport;
7595 
7596 	/* Destroy physical port that associated with the SCSI host */
7597 	destroy_port(vport);
7598 
7599 	return;
7600 }
7601 
7602 /**
7603  * lpfc_setup_bg - Setup Block guard structures and debug areas.
7604  * @phba: pointer to lpfc hba data structure.
7605  * @shost: the shost to be used to detect Block guard settings.
7606  *
7607  * This routine sets up the local Block guard protocol settings for @shost.
7608  * This routine also allocates memory for debugging bg buffers.
7609  **/
7610 static void
lpfc_setup_bg(struct lpfc_hba * phba,struct Scsi_Host * shost)7611 lpfc_setup_bg(struct lpfc_hba *phba, struct Scsi_Host *shost)
7612 {
7613 	uint32_t old_mask;
7614 	uint32_t old_guard;
7615 
7616 	if (phba->cfg_prot_mask && phba->cfg_prot_guard) {
7617 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7618 				"1478 Registering BlockGuard with the "
7619 				"SCSI layer\n");
7620 
7621 		old_mask = phba->cfg_prot_mask;
7622 		old_guard = phba->cfg_prot_guard;
7623 
7624 		/* Only allow supported values */
7625 		phba->cfg_prot_mask &= (SHOST_DIF_TYPE1_PROTECTION |
7626 			SHOST_DIX_TYPE0_PROTECTION |
7627 			SHOST_DIX_TYPE1_PROTECTION);
7628 		phba->cfg_prot_guard &= (SHOST_DIX_GUARD_IP |
7629 					 SHOST_DIX_GUARD_CRC);
7630 
7631 		/* DIF Type 1 protection for profiles AST1/C1 is end to end */
7632 		if (phba->cfg_prot_mask == SHOST_DIX_TYPE1_PROTECTION)
7633 			phba->cfg_prot_mask |= SHOST_DIF_TYPE1_PROTECTION;
7634 
7635 		if (phba->cfg_prot_mask && phba->cfg_prot_guard) {
7636 			if ((old_mask != phba->cfg_prot_mask) ||
7637 				(old_guard != phba->cfg_prot_guard))
7638 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7639 					"1475 Registering BlockGuard with the "
7640 					"SCSI layer: mask %d  guard %d\n",
7641 					phba->cfg_prot_mask,
7642 					phba->cfg_prot_guard);
7643 
7644 			scsi_host_set_prot(shost, phba->cfg_prot_mask);
7645 			scsi_host_set_guard(shost, phba->cfg_prot_guard);
7646 		} else
7647 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7648 				"1479 Not Registering BlockGuard with the SCSI "
7649 				"layer, Bad protection parameters: %d %d\n",
7650 				old_mask, old_guard);
7651 	}
7652 }
7653 
7654 /**
7655  * lpfc_post_init_setup - Perform necessary device post initialization setup.
7656  * @phba: pointer to lpfc hba data structure.
7657  *
7658  * This routine is invoked to perform all the necessary post initialization
7659  * setup for the device.
7660  **/
7661 static void
lpfc_post_init_setup(struct lpfc_hba * phba)7662 lpfc_post_init_setup(struct lpfc_hba *phba)
7663 {
7664 	struct Scsi_Host  *shost;
7665 	struct lpfc_adapter_event_header adapter_event;
7666 
7667 	/* Get the default values for Model Name and Description */
7668 	lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
7669 
7670 	/*
7671 	 * hba setup may have changed the hba_queue_depth so we need to
7672 	 * adjust the value of can_queue.
7673 	 */
7674 	shost = pci_get_drvdata(phba->pcidev);
7675 	shost->can_queue = phba->cfg_hba_queue_depth - 10;
7676 
7677 	lpfc_host_attrib_init(shost);
7678 
7679 	if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
7680 		spin_lock_irq(shost->host_lock);
7681 		lpfc_poll_start_timer(phba);
7682 		spin_unlock_irq(shost->host_lock);
7683 	}
7684 
7685 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7686 			"0428 Perform SCSI scan\n");
7687 	/* Send board arrival event to upper layer */
7688 	adapter_event.event_type = FC_REG_ADAPTER_EVENT;
7689 	adapter_event.subcategory = LPFC_EVENT_ARRIVAL;
7690 	fc_host_post_vendor_event(shost, fc_get_event_number(),
7691 				  sizeof(adapter_event),
7692 				  (char *) &adapter_event,
7693 				  LPFC_NL_VENDOR_ID);
7694 	return;
7695 }
7696 
7697 /**
7698  * lpfc_sli_pci_mem_setup - Setup SLI3 HBA PCI memory space.
7699  * @phba: pointer to lpfc hba data structure.
7700  *
7701  * This routine is invoked to set up the PCI device memory space for device
7702  * with SLI-3 interface spec.
7703  *
7704  * Return codes
7705  * 	0 - successful
7706  * 	other values - error
7707  **/
7708 static int
lpfc_sli_pci_mem_setup(struct lpfc_hba * phba)7709 lpfc_sli_pci_mem_setup(struct lpfc_hba *phba)
7710 {
7711 	struct pci_dev *pdev = phba->pcidev;
7712 	unsigned long bar0map_len, bar2map_len;
7713 	int i, hbq_count;
7714 	void *ptr;
7715 	int error;
7716 
7717 	if (!pdev)
7718 		return -ENODEV;
7719 
7720 	/* Set the device DMA mask size */
7721 	error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
7722 	if (error)
7723 		error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
7724 	if (error)
7725 		return error;
7726 	error = -ENODEV;
7727 
7728 	/* Get the bus address of Bar0 and Bar2 and the number of bytes
7729 	 * required by each mapping.
7730 	 */
7731 	phba->pci_bar0_map = pci_resource_start(pdev, 0);
7732 	bar0map_len = pci_resource_len(pdev, 0);
7733 
7734 	phba->pci_bar2_map = pci_resource_start(pdev, 2);
7735 	bar2map_len = pci_resource_len(pdev, 2);
7736 
7737 	/* Map HBA SLIM to a kernel virtual address. */
7738 	phba->slim_memmap_p = ioremap(phba->pci_bar0_map, bar0map_len);
7739 	if (!phba->slim_memmap_p) {
7740 		dev_printk(KERN_ERR, &pdev->dev,
7741 			   "ioremap failed for SLIM memory.\n");
7742 		goto out;
7743 	}
7744 
7745 	/* Map HBA Control Registers to a kernel virtual address. */
7746 	phba->ctrl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len);
7747 	if (!phba->ctrl_regs_memmap_p) {
7748 		dev_printk(KERN_ERR, &pdev->dev,
7749 			   "ioremap failed for HBA control registers.\n");
7750 		goto out_iounmap_slim;
7751 	}
7752 
7753 	/* Allocate memory for SLI-2 structures */
7754 	phba->slim2p.virt = dma_alloc_coherent(&pdev->dev, SLI2_SLIM_SIZE,
7755 					       &phba->slim2p.phys, GFP_KERNEL);
7756 	if (!phba->slim2p.virt)
7757 		goto out_iounmap;
7758 
7759 	phba->mbox = phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, mbx);
7760 	phba->mbox_ext = (phba->slim2p.virt +
7761 		offsetof(struct lpfc_sli2_slim, mbx_ext_words));
7762 	phba->pcb = (phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, pcb));
7763 	phba->IOCBs = (phba->slim2p.virt +
7764 		       offsetof(struct lpfc_sli2_slim, IOCBs));
7765 
7766 	phba->hbqslimp.virt = dma_alloc_coherent(&pdev->dev,
7767 						 lpfc_sli_hbq_size(),
7768 						 &phba->hbqslimp.phys,
7769 						 GFP_KERNEL);
7770 	if (!phba->hbqslimp.virt)
7771 		goto out_free_slim;
7772 
7773 	hbq_count = lpfc_sli_hbq_count();
7774 	ptr = phba->hbqslimp.virt;
7775 	for (i = 0; i < hbq_count; ++i) {
7776 		phba->hbqs[i].hbq_virt = ptr;
7777 		INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
7778 		ptr += (lpfc_hbq_defs[i]->entry_count *
7779 			sizeof(struct lpfc_hbq_entry));
7780 	}
7781 	phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_els_hbq_alloc;
7782 	phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_els_hbq_free;
7783 
7784 	memset(phba->hbqslimp.virt, 0, lpfc_sli_hbq_size());
7785 
7786 	phba->MBslimaddr = phba->slim_memmap_p;
7787 	phba->HAregaddr = phba->ctrl_regs_memmap_p + HA_REG_OFFSET;
7788 	phba->CAregaddr = phba->ctrl_regs_memmap_p + CA_REG_OFFSET;
7789 	phba->HSregaddr = phba->ctrl_regs_memmap_p + HS_REG_OFFSET;
7790 	phba->HCregaddr = phba->ctrl_regs_memmap_p + HC_REG_OFFSET;
7791 
7792 	return 0;
7793 
7794 out_free_slim:
7795 	dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
7796 			  phba->slim2p.virt, phba->slim2p.phys);
7797 out_iounmap:
7798 	iounmap(phba->ctrl_regs_memmap_p);
7799 out_iounmap_slim:
7800 	iounmap(phba->slim_memmap_p);
7801 out:
7802 	return error;
7803 }
7804 
7805 /**
7806  * lpfc_sli_pci_mem_unset - Unset SLI3 HBA PCI memory space.
7807  * @phba: pointer to lpfc hba data structure.
7808  *
7809  * This routine is invoked to unset the PCI device memory space for device
7810  * with SLI-3 interface spec.
7811  **/
7812 static void
lpfc_sli_pci_mem_unset(struct lpfc_hba * phba)7813 lpfc_sli_pci_mem_unset(struct lpfc_hba *phba)
7814 {
7815 	struct pci_dev *pdev;
7816 
7817 	/* Obtain PCI device reference */
7818 	if (!phba->pcidev)
7819 		return;
7820 	else
7821 		pdev = phba->pcidev;
7822 
7823 	/* Free coherent DMA memory allocated */
7824 	dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
7825 			  phba->hbqslimp.virt, phba->hbqslimp.phys);
7826 	dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
7827 			  phba->slim2p.virt, phba->slim2p.phys);
7828 
7829 	/* I/O memory unmap */
7830 	iounmap(phba->ctrl_regs_memmap_p);
7831 	iounmap(phba->slim_memmap_p);
7832 
7833 	return;
7834 }
7835 
7836 /**
7837  * lpfc_sli4_post_status_check - Wait for SLI4 POST done and check status
7838  * @phba: pointer to lpfc hba data structure.
7839  *
7840  * This routine is invoked to wait for SLI4 device Power On Self Test (POST)
7841  * done and check status.
7842  *
7843  * Return 0 if successful, otherwise -ENODEV.
7844  **/
7845 int
lpfc_sli4_post_status_check(struct lpfc_hba * phba)7846 lpfc_sli4_post_status_check(struct lpfc_hba *phba)
7847 {
7848 	struct lpfc_register portsmphr_reg, uerrlo_reg, uerrhi_reg;
7849 	struct lpfc_register reg_data;
7850 	int i, port_error = 0;
7851 	uint32_t if_type;
7852 
7853 	memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
7854 	memset(&reg_data, 0, sizeof(reg_data));
7855 	if (!phba->sli4_hba.PSMPHRregaddr)
7856 		return -ENODEV;
7857 
7858 	/* Wait up to 30 seconds for the SLI Port POST done and ready */
7859 	for (i = 0; i < 3000; i++) {
7860 		if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
7861 			&portsmphr_reg.word0) ||
7862 			(bf_get(lpfc_port_smphr_perr, &portsmphr_reg))) {
7863 			/* Port has a fatal POST error, break out */
7864 			port_error = -ENODEV;
7865 			break;
7866 		}
7867 		if (LPFC_POST_STAGE_PORT_READY ==
7868 		    bf_get(lpfc_port_smphr_port_status, &portsmphr_reg))
7869 			break;
7870 		msleep(10);
7871 	}
7872 
7873 	/*
7874 	 * If there was a port error during POST, then don't proceed with
7875 	 * other register reads as the data may not be valid.  Just exit.
7876 	 */
7877 	if (port_error) {
7878 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7879 			"1408 Port Failed POST - portsmphr=0x%x, "
7880 			"perr=x%x, sfi=x%x, nip=x%x, ipc=x%x, scr1=x%x, "
7881 			"scr2=x%x, hscratch=x%x, pstatus=x%x\n",
7882 			portsmphr_reg.word0,
7883 			bf_get(lpfc_port_smphr_perr, &portsmphr_reg),
7884 			bf_get(lpfc_port_smphr_sfi, &portsmphr_reg),
7885 			bf_get(lpfc_port_smphr_nip, &portsmphr_reg),
7886 			bf_get(lpfc_port_smphr_ipc, &portsmphr_reg),
7887 			bf_get(lpfc_port_smphr_scr1, &portsmphr_reg),
7888 			bf_get(lpfc_port_smphr_scr2, &portsmphr_reg),
7889 			bf_get(lpfc_port_smphr_host_scratch, &portsmphr_reg),
7890 			bf_get(lpfc_port_smphr_port_status, &portsmphr_reg));
7891 	} else {
7892 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7893 				"2534 Device Info: SLIFamily=0x%x, "
7894 				"SLIRev=0x%x, IFType=0x%x, SLIHint_1=0x%x, "
7895 				"SLIHint_2=0x%x, FT=0x%x\n",
7896 				bf_get(lpfc_sli_intf_sli_family,
7897 				       &phba->sli4_hba.sli_intf),
7898 				bf_get(lpfc_sli_intf_slirev,
7899 				       &phba->sli4_hba.sli_intf),
7900 				bf_get(lpfc_sli_intf_if_type,
7901 				       &phba->sli4_hba.sli_intf),
7902 				bf_get(lpfc_sli_intf_sli_hint1,
7903 				       &phba->sli4_hba.sli_intf),
7904 				bf_get(lpfc_sli_intf_sli_hint2,
7905 				       &phba->sli4_hba.sli_intf),
7906 				bf_get(lpfc_sli_intf_func_type,
7907 				       &phba->sli4_hba.sli_intf));
7908 		/*
7909 		 * Check for other Port errors during the initialization
7910 		 * process.  Fail the load if the port did not come up
7911 		 * correctly.
7912 		 */
7913 		if_type = bf_get(lpfc_sli_intf_if_type,
7914 				 &phba->sli4_hba.sli_intf);
7915 		switch (if_type) {
7916 		case LPFC_SLI_INTF_IF_TYPE_0:
7917 			phba->sli4_hba.ue_mask_lo =
7918 			      readl(phba->sli4_hba.u.if_type0.UEMASKLOregaddr);
7919 			phba->sli4_hba.ue_mask_hi =
7920 			      readl(phba->sli4_hba.u.if_type0.UEMASKHIregaddr);
7921 			uerrlo_reg.word0 =
7922 			      readl(phba->sli4_hba.u.if_type0.UERRLOregaddr);
7923 			uerrhi_reg.word0 =
7924 				readl(phba->sli4_hba.u.if_type0.UERRHIregaddr);
7925 			if ((~phba->sli4_hba.ue_mask_lo & uerrlo_reg.word0) ||
7926 			    (~phba->sli4_hba.ue_mask_hi & uerrhi_reg.word0)) {
7927 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7928 						"1422 Unrecoverable Error "
7929 						"Detected during POST "
7930 						"uerr_lo_reg=0x%x, "
7931 						"uerr_hi_reg=0x%x, "
7932 						"ue_mask_lo_reg=0x%x, "
7933 						"ue_mask_hi_reg=0x%x\n",
7934 						uerrlo_reg.word0,
7935 						uerrhi_reg.word0,
7936 						phba->sli4_hba.ue_mask_lo,
7937 						phba->sli4_hba.ue_mask_hi);
7938 				port_error = -ENODEV;
7939 			}
7940 			break;
7941 		case LPFC_SLI_INTF_IF_TYPE_2:
7942 		case LPFC_SLI_INTF_IF_TYPE_6:
7943 			/* Final checks.  The port status should be clean. */
7944 			if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
7945 				&reg_data.word0) ||
7946 				(bf_get(lpfc_sliport_status_err, &reg_data) &&
7947 				 !bf_get(lpfc_sliport_status_rn, &reg_data))) {
7948 				phba->work_status[0] =
7949 					readl(phba->sli4_hba.u.if_type2.
7950 					      ERR1regaddr);
7951 				phba->work_status[1] =
7952 					readl(phba->sli4_hba.u.if_type2.
7953 					      ERR2regaddr);
7954 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7955 					"2888 Unrecoverable port error "
7956 					"following POST: port status reg "
7957 					"0x%x, port_smphr reg 0x%x, "
7958 					"error 1=0x%x, error 2=0x%x\n",
7959 					reg_data.word0,
7960 					portsmphr_reg.word0,
7961 					phba->work_status[0],
7962 					phba->work_status[1]);
7963 				port_error = -ENODEV;
7964 			}
7965 			break;
7966 		case LPFC_SLI_INTF_IF_TYPE_1:
7967 		default:
7968 			break;
7969 		}
7970 	}
7971 	return port_error;
7972 }
7973 
7974 /**
7975  * lpfc_sli4_bar0_register_memmap - Set up SLI4 BAR0 register memory map.
7976  * @phba: pointer to lpfc hba data structure.
7977  * @if_type:  The SLI4 interface type getting configured.
7978  *
7979  * This routine is invoked to set up SLI4 BAR0 PCI config space register
7980  * memory map.
7981  **/
7982 static void
lpfc_sli4_bar0_register_memmap(struct lpfc_hba * phba,uint32_t if_type)7983 lpfc_sli4_bar0_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
7984 {
7985 	switch (if_type) {
7986 	case LPFC_SLI_INTF_IF_TYPE_0:
7987 		phba->sli4_hba.u.if_type0.UERRLOregaddr =
7988 			phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_LO;
7989 		phba->sli4_hba.u.if_type0.UERRHIregaddr =
7990 			phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_HI;
7991 		phba->sli4_hba.u.if_type0.UEMASKLOregaddr =
7992 			phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_LO;
7993 		phba->sli4_hba.u.if_type0.UEMASKHIregaddr =
7994 			phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_HI;
7995 		phba->sli4_hba.SLIINTFregaddr =
7996 			phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
7997 		break;
7998 	case LPFC_SLI_INTF_IF_TYPE_2:
7999 		phba->sli4_hba.u.if_type2.EQDregaddr =
8000 			phba->sli4_hba.conf_regs_memmap_p +
8001 						LPFC_CTL_PORT_EQ_DELAY_OFFSET;
8002 		phba->sli4_hba.u.if_type2.ERR1regaddr =
8003 			phba->sli4_hba.conf_regs_memmap_p +
8004 						LPFC_CTL_PORT_ER1_OFFSET;
8005 		phba->sli4_hba.u.if_type2.ERR2regaddr =
8006 			phba->sli4_hba.conf_regs_memmap_p +
8007 						LPFC_CTL_PORT_ER2_OFFSET;
8008 		phba->sli4_hba.u.if_type2.CTRLregaddr =
8009 			phba->sli4_hba.conf_regs_memmap_p +
8010 						LPFC_CTL_PORT_CTL_OFFSET;
8011 		phba->sli4_hba.u.if_type2.STATUSregaddr =
8012 			phba->sli4_hba.conf_regs_memmap_p +
8013 						LPFC_CTL_PORT_STA_OFFSET;
8014 		phba->sli4_hba.SLIINTFregaddr =
8015 			phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
8016 		phba->sli4_hba.PSMPHRregaddr =
8017 			phba->sli4_hba.conf_regs_memmap_p +
8018 						LPFC_CTL_PORT_SEM_OFFSET;
8019 		phba->sli4_hba.RQDBregaddr =
8020 			phba->sli4_hba.conf_regs_memmap_p +
8021 						LPFC_ULP0_RQ_DOORBELL;
8022 		phba->sli4_hba.WQDBregaddr =
8023 			phba->sli4_hba.conf_regs_memmap_p +
8024 						LPFC_ULP0_WQ_DOORBELL;
8025 		phba->sli4_hba.CQDBregaddr =
8026 			phba->sli4_hba.conf_regs_memmap_p + LPFC_EQCQ_DOORBELL;
8027 		phba->sli4_hba.EQDBregaddr = phba->sli4_hba.CQDBregaddr;
8028 		phba->sli4_hba.MQDBregaddr =
8029 			phba->sli4_hba.conf_regs_memmap_p + LPFC_MQ_DOORBELL;
8030 		phba->sli4_hba.BMBXregaddr =
8031 			phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
8032 		break;
8033 	case LPFC_SLI_INTF_IF_TYPE_6:
8034 		phba->sli4_hba.u.if_type2.EQDregaddr =
8035 			phba->sli4_hba.conf_regs_memmap_p +
8036 						LPFC_CTL_PORT_EQ_DELAY_OFFSET;
8037 		phba->sli4_hba.u.if_type2.ERR1regaddr =
8038 			phba->sli4_hba.conf_regs_memmap_p +
8039 						LPFC_CTL_PORT_ER1_OFFSET;
8040 		phba->sli4_hba.u.if_type2.ERR2regaddr =
8041 			phba->sli4_hba.conf_regs_memmap_p +
8042 						LPFC_CTL_PORT_ER2_OFFSET;
8043 		phba->sli4_hba.u.if_type2.CTRLregaddr =
8044 			phba->sli4_hba.conf_regs_memmap_p +
8045 						LPFC_CTL_PORT_CTL_OFFSET;
8046 		phba->sli4_hba.u.if_type2.STATUSregaddr =
8047 			phba->sli4_hba.conf_regs_memmap_p +
8048 						LPFC_CTL_PORT_STA_OFFSET;
8049 		phba->sli4_hba.PSMPHRregaddr =
8050 			phba->sli4_hba.conf_regs_memmap_p +
8051 						LPFC_CTL_PORT_SEM_OFFSET;
8052 		phba->sli4_hba.BMBXregaddr =
8053 			phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
8054 		break;
8055 	case LPFC_SLI_INTF_IF_TYPE_1:
8056 	default:
8057 		dev_printk(KERN_ERR, &phba->pcidev->dev,
8058 			   "FATAL - unsupported SLI4 interface type - %d\n",
8059 			   if_type);
8060 		break;
8061 	}
8062 }
8063 
8064 /**
8065  * lpfc_sli4_bar1_register_memmap - Set up SLI4 BAR1 register memory map.
8066  * @phba: pointer to lpfc hba data structure.
8067  *
8068  * This routine is invoked to set up SLI4 BAR1 register memory map.
8069  **/
8070 static void
lpfc_sli4_bar1_register_memmap(struct lpfc_hba * phba,uint32_t if_type)8071 lpfc_sli4_bar1_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
8072 {
8073 	switch (if_type) {
8074 	case LPFC_SLI_INTF_IF_TYPE_0:
8075 		phba->sli4_hba.PSMPHRregaddr =
8076 			phba->sli4_hba.ctrl_regs_memmap_p +
8077 			LPFC_SLIPORT_IF0_SMPHR;
8078 		phba->sli4_hba.ISRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
8079 			LPFC_HST_ISR0;
8080 		phba->sli4_hba.IMRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
8081 			LPFC_HST_IMR0;
8082 		phba->sli4_hba.ISCRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
8083 			LPFC_HST_ISCR0;
8084 		break;
8085 	case LPFC_SLI_INTF_IF_TYPE_6:
8086 		phba->sli4_hba.RQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
8087 			LPFC_IF6_RQ_DOORBELL;
8088 		phba->sli4_hba.WQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
8089 			LPFC_IF6_WQ_DOORBELL;
8090 		phba->sli4_hba.CQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
8091 			LPFC_IF6_CQ_DOORBELL;
8092 		phba->sli4_hba.EQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
8093 			LPFC_IF6_EQ_DOORBELL;
8094 		phba->sli4_hba.MQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
8095 			LPFC_IF6_MQ_DOORBELL;
8096 		break;
8097 	case LPFC_SLI_INTF_IF_TYPE_2:
8098 	case LPFC_SLI_INTF_IF_TYPE_1:
8099 	default:
8100 		dev_err(&phba->pcidev->dev,
8101 			   "FATAL - unsupported SLI4 interface type - %d\n",
8102 			   if_type);
8103 		break;
8104 	}
8105 }
8106 
8107 /**
8108  * lpfc_sli4_bar2_register_memmap - Set up SLI4 BAR2 register memory map.
8109  * @phba: pointer to lpfc hba data structure.
8110  * @vf: virtual function number
8111  *
8112  * This routine is invoked to set up SLI4 BAR2 doorbell register memory map
8113  * based on the given viftual function number, @vf.
8114  *
8115  * Return 0 if successful, otherwise -ENODEV.
8116  **/
8117 static int
lpfc_sli4_bar2_register_memmap(struct lpfc_hba * phba,uint32_t vf)8118 lpfc_sli4_bar2_register_memmap(struct lpfc_hba *phba, uint32_t vf)
8119 {
8120 	if (vf > LPFC_VIR_FUNC_MAX)
8121 		return -ENODEV;
8122 
8123 	phba->sli4_hba.RQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
8124 				vf * LPFC_VFR_PAGE_SIZE +
8125 					LPFC_ULP0_RQ_DOORBELL);
8126 	phba->sli4_hba.WQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
8127 				vf * LPFC_VFR_PAGE_SIZE +
8128 					LPFC_ULP0_WQ_DOORBELL);
8129 	phba->sli4_hba.CQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
8130 				vf * LPFC_VFR_PAGE_SIZE +
8131 					LPFC_EQCQ_DOORBELL);
8132 	phba->sli4_hba.EQDBregaddr = phba->sli4_hba.CQDBregaddr;
8133 	phba->sli4_hba.MQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
8134 				vf * LPFC_VFR_PAGE_SIZE + LPFC_MQ_DOORBELL);
8135 	phba->sli4_hba.BMBXregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
8136 				vf * LPFC_VFR_PAGE_SIZE + LPFC_BMBX);
8137 	return 0;
8138 }
8139 
8140 /**
8141  * lpfc_create_bootstrap_mbox - Create the bootstrap mailbox
8142  * @phba: pointer to lpfc hba data structure.
8143  *
8144  * This routine is invoked to create the bootstrap mailbox
8145  * region consistent with the SLI-4 interface spec.  This
8146  * routine allocates all memory necessary to communicate
8147  * mailbox commands to the port and sets up all alignment
8148  * needs.  No locks are expected to be held when calling
8149  * this routine.
8150  *
8151  * Return codes
8152  * 	0 - successful
8153  * 	-ENOMEM - could not allocated memory.
8154  **/
8155 static int
lpfc_create_bootstrap_mbox(struct lpfc_hba * phba)8156 lpfc_create_bootstrap_mbox(struct lpfc_hba *phba)
8157 {
8158 	uint32_t bmbx_size;
8159 	struct lpfc_dmabuf *dmabuf;
8160 	struct dma_address *dma_address;
8161 	uint32_t pa_addr;
8162 	uint64_t phys_addr;
8163 
8164 	dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
8165 	if (!dmabuf)
8166 		return -ENOMEM;
8167 
8168 	/*
8169 	 * The bootstrap mailbox region is comprised of 2 parts
8170 	 * plus an alignment restriction of 16 bytes.
8171 	 */
8172 	bmbx_size = sizeof(struct lpfc_bmbx_create) + (LPFC_ALIGN_16_BYTE - 1);
8173 	dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev, bmbx_size,
8174 					  &dmabuf->phys, GFP_KERNEL);
8175 	if (!dmabuf->virt) {
8176 		kfree(dmabuf);
8177 		return -ENOMEM;
8178 	}
8179 
8180 	/*
8181 	 * Initialize the bootstrap mailbox pointers now so that the register
8182 	 * operations are simple later.  The mailbox dma address is required
8183 	 * to be 16-byte aligned.  Also align the virtual memory as each
8184 	 * maibox is copied into the bmbx mailbox region before issuing the
8185 	 * command to the port.
8186 	 */
8187 	phba->sli4_hba.bmbx.dmabuf = dmabuf;
8188 	phba->sli4_hba.bmbx.bmbx_size = bmbx_size;
8189 
8190 	phba->sli4_hba.bmbx.avirt = PTR_ALIGN(dmabuf->virt,
8191 					      LPFC_ALIGN_16_BYTE);
8192 	phba->sli4_hba.bmbx.aphys = ALIGN(dmabuf->phys,
8193 					      LPFC_ALIGN_16_BYTE);
8194 
8195 	/*
8196 	 * Set the high and low physical addresses now.  The SLI4 alignment
8197 	 * requirement is 16 bytes and the mailbox is posted to the port
8198 	 * as two 30-bit addresses.  The other data is a bit marking whether
8199 	 * the 30-bit address is the high or low address.
8200 	 * Upcast bmbx aphys to 64bits so shift instruction compiles
8201 	 * clean on 32 bit machines.
8202 	 */
8203 	dma_address = &phba->sli4_hba.bmbx.dma_address;
8204 	phys_addr = (uint64_t)phba->sli4_hba.bmbx.aphys;
8205 	pa_addr = (uint32_t) ((phys_addr >> 34) & 0x3fffffff);
8206 	dma_address->addr_hi = (uint32_t) ((pa_addr << 2) |
8207 					   LPFC_BMBX_BIT1_ADDR_HI);
8208 
8209 	pa_addr = (uint32_t) ((phba->sli4_hba.bmbx.aphys >> 4) & 0x3fffffff);
8210 	dma_address->addr_lo = (uint32_t) ((pa_addr << 2) |
8211 					   LPFC_BMBX_BIT1_ADDR_LO);
8212 	return 0;
8213 }
8214 
8215 /**
8216  * lpfc_destroy_bootstrap_mbox - Destroy all bootstrap mailbox resources
8217  * @phba: pointer to lpfc hba data structure.
8218  *
8219  * This routine is invoked to teardown the bootstrap mailbox
8220  * region and release all host resources. This routine requires
8221  * the caller to ensure all mailbox commands recovered, no
8222  * additional mailbox comands are sent, and interrupts are disabled
8223  * before calling this routine.
8224  *
8225  **/
8226 static void
lpfc_destroy_bootstrap_mbox(struct lpfc_hba * phba)8227 lpfc_destroy_bootstrap_mbox(struct lpfc_hba *phba)
8228 {
8229 	dma_free_coherent(&phba->pcidev->dev,
8230 			  phba->sli4_hba.bmbx.bmbx_size,
8231 			  phba->sli4_hba.bmbx.dmabuf->virt,
8232 			  phba->sli4_hba.bmbx.dmabuf->phys);
8233 
8234 	kfree(phba->sli4_hba.bmbx.dmabuf);
8235 	memset(&phba->sli4_hba.bmbx, 0, sizeof(struct lpfc_bmbx));
8236 }
8237 
8238 /**
8239  * lpfc_sli4_read_config - Get the config parameters.
8240  * @phba: pointer to lpfc hba data structure.
8241  *
8242  * This routine is invoked to read the configuration parameters from the HBA.
8243  * The configuration parameters are used to set the base and maximum values
8244  * for RPI's XRI's VPI's VFI's and FCFIs. These values also affect the resource
8245  * allocation for the port.
8246  *
8247  * Return codes
8248  * 	0 - successful
8249  * 	-ENOMEM - No available memory
8250  *      -EIO - The mailbox failed to complete successfully.
8251  **/
8252 int
lpfc_sli4_read_config(struct lpfc_hba * phba)8253 lpfc_sli4_read_config(struct lpfc_hba *phba)
8254 {
8255 	LPFC_MBOXQ_t *pmb;
8256 	struct lpfc_mbx_read_config *rd_config;
8257 	union  lpfc_sli4_cfg_shdr *shdr;
8258 	uint32_t shdr_status, shdr_add_status;
8259 	struct lpfc_mbx_get_func_cfg *get_func_cfg;
8260 	struct lpfc_rsrc_desc_fcfcoe *desc;
8261 	char *pdesc_0;
8262 	uint16_t forced_link_speed;
8263 	uint32_t if_type, qmin;
8264 	int length, i, rc = 0, rc2;
8265 
8266 	pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
8267 	if (!pmb) {
8268 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8269 				"2011 Unable to allocate memory for issuing "
8270 				"SLI_CONFIG_SPECIAL mailbox command\n");
8271 		return -ENOMEM;
8272 	}
8273 
8274 	lpfc_read_config(phba, pmb);
8275 
8276 	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
8277 	if (rc != MBX_SUCCESS) {
8278 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8279 			"2012 Mailbox failed , mbxCmd x%x "
8280 			"READ_CONFIG, mbxStatus x%x\n",
8281 			bf_get(lpfc_mqe_command, &pmb->u.mqe),
8282 			bf_get(lpfc_mqe_status, &pmb->u.mqe));
8283 		rc = -EIO;
8284 	} else {
8285 		rd_config = &pmb->u.mqe.un.rd_config;
8286 		if (bf_get(lpfc_mbx_rd_conf_lnk_ldv, rd_config)) {
8287 			phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_VAL;
8288 			phba->sli4_hba.lnk_info.lnk_tp =
8289 				bf_get(lpfc_mbx_rd_conf_lnk_type, rd_config);
8290 			phba->sli4_hba.lnk_info.lnk_no =
8291 				bf_get(lpfc_mbx_rd_conf_lnk_numb, rd_config);
8292 			lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
8293 					"3081 lnk_type:%d, lnk_numb:%d\n",
8294 					phba->sli4_hba.lnk_info.lnk_tp,
8295 					phba->sli4_hba.lnk_info.lnk_no);
8296 		} else
8297 			lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8298 					"3082 Mailbox (x%x) returned ldv:x0\n",
8299 					bf_get(lpfc_mqe_command, &pmb->u.mqe));
8300 		if (bf_get(lpfc_mbx_rd_conf_bbscn_def, rd_config)) {
8301 			phba->bbcredit_support = 1;
8302 			phba->sli4_hba.bbscn_params.word0 = rd_config->word8;
8303 		}
8304 
8305 		phba->sli4_hba.conf_trunk =
8306 			bf_get(lpfc_mbx_rd_conf_trunk, rd_config);
8307 		phba->sli4_hba.extents_in_use =
8308 			bf_get(lpfc_mbx_rd_conf_extnts_inuse, rd_config);
8309 		phba->sli4_hba.max_cfg_param.max_xri =
8310 			bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);
8311 		/* Reduce resource usage in kdump environment */
8312 		if (is_kdump_kernel() &&
8313 		    phba->sli4_hba.max_cfg_param.max_xri > 512)
8314 			phba->sli4_hba.max_cfg_param.max_xri = 512;
8315 		phba->sli4_hba.max_cfg_param.xri_base =
8316 			bf_get(lpfc_mbx_rd_conf_xri_base, rd_config);
8317 		phba->sli4_hba.max_cfg_param.max_vpi =
8318 			bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config);
8319 		/* Limit the max we support */
8320 		if (phba->sli4_hba.max_cfg_param.max_vpi > LPFC_MAX_VPORTS)
8321 			phba->sli4_hba.max_cfg_param.max_vpi = LPFC_MAX_VPORTS;
8322 		phba->sli4_hba.max_cfg_param.vpi_base =
8323 			bf_get(lpfc_mbx_rd_conf_vpi_base, rd_config);
8324 		phba->sli4_hba.max_cfg_param.max_rpi =
8325 			bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config);
8326 		phba->sli4_hba.max_cfg_param.rpi_base =
8327 			bf_get(lpfc_mbx_rd_conf_rpi_base, rd_config);
8328 		phba->sli4_hba.max_cfg_param.max_vfi =
8329 			bf_get(lpfc_mbx_rd_conf_vfi_count, rd_config);
8330 		phba->sli4_hba.max_cfg_param.vfi_base =
8331 			bf_get(lpfc_mbx_rd_conf_vfi_base, rd_config);
8332 		phba->sli4_hba.max_cfg_param.max_fcfi =
8333 			bf_get(lpfc_mbx_rd_conf_fcfi_count, rd_config);
8334 		phba->sli4_hba.max_cfg_param.max_eq =
8335 			bf_get(lpfc_mbx_rd_conf_eq_count, rd_config);
8336 		phba->sli4_hba.max_cfg_param.max_rq =
8337 			bf_get(lpfc_mbx_rd_conf_rq_count, rd_config);
8338 		phba->sli4_hba.max_cfg_param.max_wq =
8339 			bf_get(lpfc_mbx_rd_conf_wq_count, rd_config);
8340 		phba->sli4_hba.max_cfg_param.max_cq =
8341 			bf_get(lpfc_mbx_rd_conf_cq_count, rd_config);
8342 		phba->lmt = bf_get(lpfc_mbx_rd_conf_lmt, rd_config);
8343 		phba->sli4_hba.next_xri = phba->sli4_hba.max_cfg_param.xri_base;
8344 		phba->vpi_base = phba->sli4_hba.max_cfg_param.vpi_base;
8345 		phba->vfi_base = phba->sli4_hba.max_cfg_param.vfi_base;
8346 		phba->max_vpi = (phba->sli4_hba.max_cfg_param.max_vpi > 0) ?
8347 				(phba->sli4_hba.max_cfg_param.max_vpi - 1) : 0;
8348 		phba->max_vports = phba->max_vpi;
8349 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
8350 				"2003 cfg params Extents? %d "
8351 				"XRI(B:%d M:%d), "
8352 				"VPI(B:%d M:%d) "
8353 				"VFI(B:%d M:%d) "
8354 				"RPI(B:%d M:%d) "
8355 				"FCFI:%d EQ:%d CQ:%d WQ:%d RQ:%d\n",
8356 				phba->sli4_hba.extents_in_use,
8357 				phba->sli4_hba.max_cfg_param.xri_base,
8358 				phba->sli4_hba.max_cfg_param.max_xri,
8359 				phba->sli4_hba.max_cfg_param.vpi_base,
8360 				phba->sli4_hba.max_cfg_param.max_vpi,
8361 				phba->sli4_hba.max_cfg_param.vfi_base,
8362 				phba->sli4_hba.max_cfg_param.max_vfi,
8363 				phba->sli4_hba.max_cfg_param.rpi_base,
8364 				phba->sli4_hba.max_cfg_param.max_rpi,
8365 				phba->sli4_hba.max_cfg_param.max_fcfi,
8366 				phba->sli4_hba.max_cfg_param.max_eq,
8367 				phba->sli4_hba.max_cfg_param.max_cq,
8368 				phba->sli4_hba.max_cfg_param.max_wq,
8369 				phba->sli4_hba.max_cfg_param.max_rq);
8370 
8371 		/*
8372 		 * Calculate queue resources based on how
8373 		 * many WQ/CQ/EQs are available.
8374 		 */
8375 		qmin = phba->sli4_hba.max_cfg_param.max_wq;
8376 		if (phba->sli4_hba.max_cfg_param.max_cq < qmin)
8377 			qmin = phba->sli4_hba.max_cfg_param.max_cq;
8378 		if (phba->sli4_hba.max_cfg_param.max_eq < qmin)
8379 			qmin = phba->sli4_hba.max_cfg_param.max_eq;
8380 		/*
8381 		 * Whats left after this can go toward NVME / FCP.
8382 		 * The minus 4 accounts for ELS, NVME LS, MBOX
8383 		 * plus one extra. When configured for
8384 		 * NVMET, FCP io channel WQs are not created.
8385 		 */
8386 		qmin -= 4;
8387 
8388 		/* Check to see if there is enough for NVME */
8389 		if ((phba->cfg_irq_chann > qmin) ||
8390 		    (phba->cfg_hdw_queue > qmin)) {
8391 			lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8392 					"2005 Reducing Queues: "
8393 					"WQ %d CQ %d EQ %d: min %d: "
8394 					"IRQ %d HDWQ %d\n",
8395 					phba->sli4_hba.max_cfg_param.max_wq,
8396 					phba->sli4_hba.max_cfg_param.max_cq,
8397 					phba->sli4_hba.max_cfg_param.max_eq,
8398 					qmin, phba->cfg_irq_chann,
8399 					phba->cfg_hdw_queue);
8400 
8401 			if (phba->cfg_irq_chann > qmin)
8402 				phba->cfg_irq_chann = qmin;
8403 			if (phba->cfg_hdw_queue > qmin)
8404 				phba->cfg_hdw_queue = qmin;
8405 		}
8406 	}
8407 
8408 	if (rc)
8409 		goto read_cfg_out;
8410 
8411 	/* Update link speed if forced link speed is supported */
8412 	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
8413 	if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
8414 		forced_link_speed =
8415 			bf_get(lpfc_mbx_rd_conf_link_speed, rd_config);
8416 		if (forced_link_speed) {
8417 			phba->hba_flag |= HBA_FORCED_LINK_SPEED;
8418 
8419 			switch (forced_link_speed) {
8420 			case LINK_SPEED_1G:
8421 				phba->cfg_link_speed =
8422 					LPFC_USER_LINK_SPEED_1G;
8423 				break;
8424 			case LINK_SPEED_2G:
8425 				phba->cfg_link_speed =
8426 					LPFC_USER_LINK_SPEED_2G;
8427 				break;
8428 			case LINK_SPEED_4G:
8429 				phba->cfg_link_speed =
8430 					LPFC_USER_LINK_SPEED_4G;
8431 				break;
8432 			case LINK_SPEED_8G:
8433 				phba->cfg_link_speed =
8434 					LPFC_USER_LINK_SPEED_8G;
8435 				break;
8436 			case LINK_SPEED_10G:
8437 				phba->cfg_link_speed =
8438 					LPFC_USER_LINK_SPEED_10G;
8439 				break;
8440 			case LINK_SPEED_16G:
8441 				phba->cfg_link_speed =
8442 					LPFC_USER_LINK_SPEED_16G;
8443 				break;
8444 			case LINK_SPEED_32G:
8445 				phba->cfg_link_speed =
8446 					LPFC_USER_LINK_SPEED_32G;
8447 				break;
8448 			case LINK_SPEED_64G:
8449 				phba->cfg_link_speed =
8450 					LPFC_USER_LINK_SPEED_64G;
8451 				break;
8452 			case 0xffff:
8453 				phba->cfg_link_speed =
8454 					LPFC_USER_LINK_SPEED_AUTO;
8455 				break;
8456 			default:
8457 				lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8458 						"0047 Unrecognized link "
8459 						"speed : %d\n",
8460 						forced_link_speed);
8461 				phba->cfg_link_speed =
8462 					LPFC_USER_LINK_SPEED_AUTO;
8463 			}
8464 		}
8465 	}
8466 
8467 	/* Reset the DFT_HBA_Q_DEPTH to the max xri  */
8468 	length = phba->sli4_hba.max_cfg_param.max_xri -
8469 			lpfc_sli4_get_els_iocb_cnt(phba);
8470 	if (phba->cfg_hba_queue_depth > length) {
8471 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
8472 				"3361 HBA queue depth changed from %d to %d\n",
8473 				phba->cfg_hba_queue_depth, length);
8474 		phba->cfg_hba_queue_depth = length;
8475 	}
8476 
8477 	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
8478 	    LPFC_SLI_INTF_IF_TYPE_2)
8479 		goto read_cfg_out;
8480 
8481 	/* get the pf# and vf# for SLI4 if_type 2 port */
8482 	length = (sizeof(struct lpfc_mbx_get_func_cfg) -
8483 		  sizeof(struct lpfc_sli4_cfg_mhdr));
8484 	lpfc_sli4_config(phba, pmb, LPFC_MBOX_SUBSYSTEM_COMMON,
8485 			 LPFC_MBOX_OPCODE_GET_FUNCTION_CONFIG,
8486 			 length, LPFC_SLI4_MBX_EMBED);
8487 
8488 	rc2 = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
8489 	shdr = (union lpfc_sli4_cfg_shdr *)
8490 				&pmb->u.mqe.un.sli4_config.header.cfg_shdr;
8491 	shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
8492 	shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
8493 	if (rc2 || shdr_status || shdr_add_status) {
8494 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8495 				"3026 Mailbox failed , mbxCmd x%x "
8496 				"GET_FUNCTION_CONFIG, mbxStatus x%x\n",
8497 				bf_get(lpfc_mqe_command, &pmb->u.mqe),
8498 				bf_get(lpfc_mqe_status, &pmb->u.mqe));
8499 		goto read_cfg_out;
8500 	}
8501 
8502 	/* search for fc_fcoe resrouce descriptor */
8503 	get_func_cfg = &pmb->u.mqe.un.get_func_cfg;
8504 
8505 	pdesc_0 = (char *)&get_func_cfg->func_cfg.desc[0];
8506 	desc = (struct lpfc_rsrc_desc_fcfcoe *)pdesc_0;
8507 	length = bf_get(lpfc_rsrc_desc_fcfcoe_length, desc);
8508 	if (length == LPFC_RSRC_DESC_TYPE_FCFCOE_V0_RSVD)
8509 		length = LPFC_RSRC_DESC_TYPE_FCFCOE_V0_LENGTH;
8510 	else if (length != LPFC_RSRC_DESC_TYPE_FCFCOE_V1_LENGTH)
8511 		goto read_cfg_out;
8512 
8513 	for (i = 0; i < LPFC_RSRC_DESC_MAX_NUM; i++) {
8514 		desc = (struct lpfc_rsrc_desc_fcfcoe *)(pdesc_0 + length * i);
8515 		if (LPFC_RSRC_DESC_TYPE_FCFCOE ==
8516 		    bf_get(lpfc_rsrc_desc_fcfcoe_type, desc)) {
8517 			phba->sli4_hba.iov.pf_number =
8518 				bf_get(lpfc_rsrc_desc_fcfcoe_pfnum, desc);
8519 			phba->sli4_hba.iov.vf_number =
8520 				bf_get(lpfc_rsrc_desc_fcfcoe_vfnum, desc);
8521 			break;
8522 		}
8523 	}
8524 
8525 	if (i < LPFC_RSRC_DESC_MAX_NUM)
8526 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
8527 				"3027 GET_FUNCTION_CONFIG: pf_number:%d, "
8528 				"vf_number:%d\n", phba->sli4_hba.iov.pf_number,
8529 				phba->sli4_hba.iov.vf_number);
8530 	else
8531 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8532 				"3028 GET_FUNCTION_CONFIG: failed to find "
8533 				"Resource Descriptor:x%x\n",
8534 				LPFC_RSRC_DESC_TYPE_FCFCOE);
8535 
8536 read_cfg_out:
8537 	mempool_free(pmb, phba->mbox_mem_pool);
8538 	return rc;
8539 }
8540 
8541 /**
8542  * lpfc_setup_endian_order - Write endian order to an SLI4 if_type 0 port.
8543  * @phba: pointer to lpfc hba data structure.
8544  *
8545  * This routine is invoked to setup the port-side endian order when
8546  * the port if_type is 0.  This routine has no function for other
8547  * if_types.
8548  *
8549  * Return codes
8550  * 	0 - successful
8551  * 	-ENOMEM - No available memory
8552  *      -EIO - The mailbox failed to complete successfully.
8553  **/
8554 static int
lpfc_setup_endian_order(struct lpfc_hba * phba)8555 lpfc_setup_endian_order(struct lpfc_hba *phba)
8556 {
8557 	LPFC_MBOXQ_t *mboxq;
8558 	uint32_t if_type, rc = 0;
8559 	uint32_t endian_mb_data[2] = {HOST_ENDIAN_LOW_WORD0,
8560 				      HOST_ENDIAN_HIGH_WORD1};
8561 
8562 	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
8563 	switch (if_type) {
8564 	case LPFC_SLI_INTF_IF_TYPE_0:
8565 		mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
8566 						       GFP_KERNEL);
8567 		if (!mboxq) {
8568 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8569 					"0492 Unable to allocate memory for "
8570 					"issuing SLI_CONFIG_SPECIAL mailbox "
8571 					"command\n");
8572 			return -ENOMEM;
8573 		}
8574 
8575 		/*
8576 		 * The SLI4_CONFIG_SPECIAL mailbox command requires the first
8577 		 * two words to contain special data values and no other data.
8578 		 */
8579 		memset(mboxq, 0, sizeof(LPFC_MBOXQ_t));
8580 		memcpy(&mboxq->u.mqe, &endian_mb_data, sizeof(endian_mb_data));
8581 		rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
8582 		if (rc != MBX_SUCCESS) {
8583 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8584 					"0493 SLI_CONFIG_SPECIAL mailbox "
8585 					"failed with status x%x\n",
8586 					rc);
8587 			rc = -EIO;
8588 		}
8589 		mempool_free(mboxq, phba->mbox_mem_pool);
8590 		break;
8591 	case LPFC_SLI_INTF_IF_TYPE_6:
8592 	case LPFC_SLI_INTF_IF_TYPE_2:
8593 	case LPFC_SLI_INTF_IF_TYPE_1:
8594 	default:
8595 		break;
8596 	}
8597 	return rc;
8598 }
8599 
8600 /**
8601  * lpfc_sli4_queue_verify - Verify and update EQ counts
8602  * @phba: pointer to lpfc hba data structure.
8603  *
8604  * This routine is invoked to check the user settable queue counts for EQs.
8605  * After this routine is called the counts will be set to valid values that
8606  * adhere to the constraints of the system's interrupt vectors and the port's
8607  * queue resources.
8608  *
8609  * Return codes
8610  *      0 - successful
8611  *      -ENOMEM - No available memory
8612  **/
8613 static int
lpfc_sli4_queue_verify(struct lpfc_hba * phba)8614 lpfc_sli4_queue_verify(struct lpfc_hba *phba)
8615 {
8616 	/*
8617 	 * Sanity check for configured queue parameters against the run-time
8618 	 * device parameters
8619 	 */
8620 
8621 	if (phba->nvmet_support) {
8622 		if (phba->cfg_irq_chann < phba->cfg_nvmet_mrq)
8623 			phba->cfg_nvmet_mrq = phba->cfg_irq_chann;
8624 		if (phba->cfg_nvmet_mrq > LPFC_NVMET_MRQ_MAX)
8625 			phba->cfg_nvmet_mrq = LPFC_NVMET_MRQ_MAX;
8626 	}
8627 
8628 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8629 			"2574 IO channels: hdwQ %d IRQ %d MRQ: %d\n",
8630 			phba->cfg_hdw_queue, phba->cfg_irq_chann,
8631 			phba->cfg_nvmet_mrq);
8632 
8633 	/* Get EQ depth from module parameter, fake the default for now */
8634 	phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;
8635 	phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
8636 
8637 	/* Get CQ depth from module parameter, fake the default for now */
8638 	phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
8639 	phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
8640 	return 0;
8641 }
8642 
8643 static int
lpfc_alloc_io_wq_cq(struct lpfc_hba * phba,int idx)8644 lpfc_alloc_io_wq_cq(struct lpfc_hba *phba, int idx)
8645 {
8646 	struct lpfc_queue *qdesc;
8647 	u32 wqesize;
8648 	int cpu;
8649 
8650 	cpu = lpfc_find_cpu_handle(phba, idx, LPFC_FIND_BY_HDWQ);
8651 	/* Create Fast Path IO CQs */
8652 	if (phba->enab_exp_wqcq_pages)
8653 		/* Increase the CQ size when WQEs contain an embedded cdb */
8654 		qdesc = lpfc_sli4_queue_alloc(phba, LPFC_EXPANDED_PAGE_SIZE,
8655 					      phba->sli4_hba.cq_esize,
8656 					      LPFC_CQE_EXP_COUNT, cpu);
8657 
8658 	else
8659 		qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
8660 					      phba->sli4_hba.cq_esize,
8661 					      phba->sli4_hba.cq_ecount, cpu);
8662 	if (!qdesc) {
8663 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8664 			"0499 Failed allocate fast-path IO CQ (%d)\n", idx);
8665 		return 1;
8666 	}
8667 	qdesc->qe_valid = 1;
8668 	qdesc->hdwq = idx;
8669 	qdesc->chann = cpu;
8670 	phba->sli4_hba.hdwq[idx].io_cq = qdesc;
8671 
8672 	/* Create Fast Path IO WQs */
8673 	if (phba->enab_exp_wqcq_pages) {
8674 		/* Increase the WQ size when WQEs contain an embedded cdb */
8675 		wqesize = (phba->fcp_embed_io) ?
8676 			LPFC_WQE128_SIZE : phba->sli4_hba.wq_esize;
8677 		qdesc = lpfc_sli4_queue_alloc(phba, LPFC_EXPANDED_PAGE_SIZE,
8678 					      wqesize,
8679 					      LPFC_WQE_EXP_COUNT, cpu);
8680 	} else
8681 		qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
8682 					      phba->sli4_hba.wq_esize,
8683 					      phba->sli4_hba.wq_ecount, cpu);
8684 
8685 	if (!qdesc) {
8686 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8687 				"0503 Failed allocate fast-path IO WQ (%d)\n",
8688 				idx);
8689 		return 1;
8690 	}
8691 	qdesc->hdwq = idx;
8692 	qdesc->chann = cpu;
8693 	phba->sli4_hba.hdwq[idx].io_wq = qdesc;
8694 	list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);
8695 	return 0;
8696 }
8697 
8698 /**
8699  * lpfc_sli4_queue_create - Create all the SLI4 queues
8700  * @phba: pointer to lpfc hba data structure.
8701  *
8702  * This routine is invoked to allocate all the SLI4 queues for the FCoE HBA
8703  * operation. For each SLI4 queue type, the parameters such as queue entry
8704  * count (queue depth) shall be taken from the module parameter. For now,
8705  * we just use some constant number as place holder.
8706  *
8707  * Return codes
8708  *      0 - successful
8709  *      -ENOMEM - No availble memory
8710  *      -EIO - The mailbox failed to complete successfully.
8711  **/
8712 int
lpfc_sli4_queue_create(struct lpfc_hba * phba)8713 lpfc_sli4_queue_create(struct lpfc_hba *phba)
8714 {
8715 	struct lpfc_queue *qdesc;
8716 	int idx, cpu, eqcpu;
8717 	struct lpfc_sli4_hdw_queue *qp;
8718 	struct lpfc_vector_map_info *cpup;
8719 	struct lpfc_vector_map_info *eqcpup;
8720 	struct lpfc_eq_intr_info *eqi;
8721 
8722 	/*
8723 	 * Create HBA Record arrays.
8724 	 * Both NVME and FCP will share that same vectors / EQs
8725 	 */
8726 	phba->sli4_hba.mq_esize = LPFC_MQE_SIZE;
8727 	phba->sli4_hba.mq_ecount = LPFC_MQE_DEF_COUNT;
8728 	phba->sli4_hba.wq_esize = LPFC_WQE_SIZE;
8729 	phba->sli4_hba.wq_ecount = LPFC_WQE_DEF_COUNT;
8730 	phba->sli4_hba.rq_esize = LPFC_RQE_SIZE;
8731 	phba->sli4_hba.rq_ecount = LPFC_RQE_DEF_COUNT;
8732 	phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;
8733 	phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
8734 	phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
8735 	phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
8736 
8737 	if (!phba->sli4_hba.hdwq) {
8738 		phba->sli4_hba.hdwq = kcalloc(
8739 			phba->cfg_hdw_queue, sizeof(struct lpfc_sli4_hdw_queue),
8740 			GFP_KERNEL);
8741 		if (!phba->sli4_hba.hdwq) {
8742 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8743 					"6427 Failed allocate memory for "
8744 					"fast-path Hardware Queue array\n");
8745 			goto out_error;
8746 		}
8747 		/* Prepare hardware queues to take IO buffers */
8748 		for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
8749 			qp = &phba->sli4_hba.hdwq[idx];
8750 			spin_lock_init(&qp->io_buf_list_get_lock);
8751 			spin_lock_init(&qp->io_buf_list_put_lock);
8752 			INIT_LIST_HEAD(&qp->lpfc_io_buf_list_get);
8753 			INIT_LIST_HEAD(&qp->lpfc_io_buf_list_put);
8754 			qp->get_io_bufs = 0;
8755 			qp->put_io_bufs = 0;
8756 			qp->total_io_bufs = 0;
8757 			spin_lock_init(&qp->abts_io_buf_list_lock);
8758 			INIT_LIST_HEAD(&qp->lpfc_abts_io_buf_list);
8759 			qp->abts_scsi_io_bufs = 0;
8760 			qp->abts_nvme_io_bufs = 0;
8761 			INIT_LIST_HEAD(&qp->sgl_list);
8762 			INIT_LIST_HEAD(&qp->cmd_rsp_buf_list);
8763 			spin_lock_init(&qp->hdwq_lock);
8764 		}
8765 	}
8766 
8767 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
8768 		if (phba->nvmet_support) {
8769 			phba->sli4_hba.nvmet_cqset = kcalloc(
8770 					phba->cfg_nvmet_mrq,
8771 					sizeof(struct lpfc_queue *),
8772 					GFP_KERNEL);
8773 			if (!phba->sli4_hba.nvmet_cqset) {
8774 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8775 					"3121 Fail allocate memory for "
8776 					"fast-path CQ set array\n");
8777 				goto out_error;
8778 			}
8779 			phba->sli4_hba.nvmet_mrq_hdr = kcalloc(
8780 					phba->cfg_nvmet_mrq,
8781 					sizeof(struct lpfc_queue *),
8782 					GFP_KERNEL);
8783 			if (!phba->sli4_hba.nvmet_mrq_hdr) {
8784 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8785 					"3122 Fail allocate memory for "
8786 					"fast-path RQ set hdr array\n");
8787 				goto out_error;
8788 			}
8789 			phba->sli4_hba.nvmet_mrq_data = kcalloc(
8790 					phba->cfg_nvmet_mrq,
8791 					sizeof(struct lpfc_queue *),
8792 					GFP_KERNEL);
8793 			if (!phba->sli4_hba.nvmet_mrq_data) {
8794 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8795 					"3124 Fail allocate memory for "
8796 					"fast-path RQ set data array\n");
8797 				goto out_error;
8798 			}
8799 		}
8800 	}
8801 
8802 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_wq_list);
8803 
8804 	/* Create HBA Event Queues (EQs) */
8805 	for_each_present_cpu(cpu) {
8806 		/* We only want to create 1 EQ per vector, even though
8807 		 * multiple CPUs might be using that vector. so only
8808 		 * selects the CPUs that are LPFC_CPU_FIRST_IRQ.
8809 		 */
8810 		cpup = &phba->sli4_hba.cpu_map[cpu];
8811 		if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
8812 			continue;
8813 
8814 		/* Get a ptr to the Hardware Queue associated with this CPU */
8815 		qp = &phba->sli4_hba.hdwq[cpup->hdwq];
8816 
8817 		/* Allocate an EQ */
8818 		qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
8819 					      phba->sli4_hba.eq_esize,
8820 					      phba->sli4_hba.eq_ecount, cpu);
8821 		if (!qdesc) {
8822 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8823 					"0497 Failed allocate EQ (%d)\n",
8824 					cpup->hdwq);
8825 			goto out_error;
8826 		}
8827 		qdesc->qe_valid = 1;
8828 		qdesc->hdwq = cpup->hdwq;
8829 		qdesc->chann = cpu; /* First CPU this EQ is affinitized to */
8830 		qdesc->last_cpu = qdesc->chann;
8831 
8832 		/* Save the allocated EQ in the Hardware Queue */
8833 		qp->hba_eq = qdesc;
8834 
8835 		eqi = per_cpu_ptr(phba->sli4_hba.eq_info, qdesc->last_cpu);
8836 		list_add(&qdesc->cpu_list, &eqi->list);
8837 	}
8838 
8839 	/* Now we need to populate the other Hardware Queues, that share
8840 	 * an IRQ vector, with the associated EQ ptr.
8841 	 */
8842 	for_each_present_cpu(cpu) {
8843 		cpup = &phba->sli4_hba.cpu_map[cpu];
8844 
8845 		/* Check for EQ already allocated in previous loop */
8846 		if (cpup->flag & LPFC_CPU_FIRST_IRQ)
8847 			continue;
8848 
8849 		/* Check for multiple CPUs per hdwq */
8850 		qp = &phba->sli4_hba.hdwq[cpup->hdwq];
8851 		if (qp->hba_eq)
8852 			continue;
8853 
8854 		/* We need to share an EQ for this hdwq */
8855 		eqcpu = lpfc_find_cpu_handle(phba, cpup->eq, LPFC_FIND_BY_EQ);
8856 		eqcpup = &phba->sli4_hba.cpu_map[eqcpu];
8857 		qp->hba_eq = phba->sli4_hba.hdwq[eqcpup->hdwq].hba_eq;
8858 	}
8859 
8860 	/* Allocate IO Path SLI4 CQ/WQs */
8861 	for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
8862 		if (lpfc_alloc_io_wq_cq(phba, idx))
8863 			goto out_error;
8864 	}
8865 
8866 	if (phba->nvmet_support) {
8867 		for (idx = 0; idx < phba->cfg_nvmet_mrq; idx++) {
8868 			cpu = lpfc_find_cpu_handle(phba, idx,
8869 						   LPFC_FIND_BY_HDWQ);
8870 			qdesc = lpfc_sli4_queue_alloc(phba,
8871 						      LPFC_DEFAULT_PAGE_SIZE,
8872 						      phba->sli4_hba.cq_esize,
8873 						      phba->sli4_hba.cq_ecount,
8874 						      cpu);
8875 			if (!qdesc) {
8876 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8877 						"3142 Failed allocate NVME "
8878 						"CQ Set (%d)\n", idx);
8879 				goto out_error;
8880 			}
8881 			qdesc->qe_valid = 1;
8882 			qdesc->hdwq = idx;
8883 			qdesc->chann = cpu;
8884 			phba->sli4_hba.nvmet_cqset[idx] = qdesc;
8885 		}
8886 	}
8887 
8888 	/*
8889 	 * Create Slow Path Completion Queues (CQs)
8890 	 */
8891 
8892 	cpu = lpfc_find_cpu_handle(phba, 0, LPFC_FIND_BY_EQ);
8893 	/* Create slow-path Mailbox Command Complete Queue */
8894 	qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
8895 				      phba->sli4_hba.cq_esize,
8896 				      phba->sli4_hba.cq_ecount, cpu);
8897 	if (!qdesc) {
8898 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8899 				"0500 Failed allocate slow-path mailbox CQ\n");
8900 		goto out_error;
8901 	}
8902 	qdesc->qe_valid = 1;
8903 	phba->sli4_hba.mbx_cq = qdesc;
8904 
8905 	/* Create slow-path ELS Complete Queue */
8906 	qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
8907 				      phba->sli4_hba.cq_esize,
8908 				      phba->sli4_hba.cq_ecount, cpu);
8909 	if (!qdesc) {
8910 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8911 				"0501 Failed allocate slow-path ELS CQ\n");
8912 		goto out_error;
8913 	}
8914 	qdesc->qe_valid = 1;
8915 	qdesc->chann = cpu;
8916 	phba->sli4_hba.els_cq = qdesc;
8917 
8918 
8919 	/*
8920 	 * Create Slow Path Work Queues (WQs)
8921 	 */
8922 
8923 	/* Create Mailbox Command Queue */
8924 
8925 	qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
8926 				      phba->sli4_hba.mq_esize,
8927 				      phba->sli4_hba.mq_ecount, cpu);
8928 	if (!qdesc) {
8929 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8930 				"0505 Failed allocate slow-path MQ\n");
8931 		goto out_error;
8932 	}
8933 	qdesc->chann = cpu;
8934 	phba->sli4_hba.mbx_wq = qdesc;
8935 
8936 	/*
8937 	 * Create ELS Work Queues
8938 	 */
8939 
8940 	/* Create slow-path ELS Work Queue */
8941 	qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
8942 				      phba->sli4_hba.wq_esize,
8943 				      phba->sli4_hba.wq_ecount, cpu);
8944 	if (!qdesc) {
8945 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8946 				"0504 Failed allocate slow-path ELS WQ\n");
8947 		goto out_error;
8948 	}
8949 	qdesc->chann = cpu;
8950 	phba->sli4_hba.els_wq = qdesc;
8951 	list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);
8952 
8953 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
8954 		/* Create NVME LS Complete Queue */
8955 		qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
8956 					      phba->sli4_hba.cq_esize,
8957 					      phba->sli4_hba.cq_ecount, cpu);
8958 		if (!qdesc) {
8959 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8960 					"6079 Failed allocate NVME LS CQ\n");
8961 			goto out_error;
8962 		}
8963 		qdesc->chann = cpu;
8964 		qdesc->qe_valid = 1;
8965 		phba->sli4_hba.nvmels_cq = qdesc;
8966 
8967 		/* Create NVME LS Work Queue */
8968 		qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
8969 					      phba->sli4_hba.wq_esize,
8970 					      phba->sli4_hba.wq_ecount, cpu);
8971 		if (!qdesc) {
8972 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8973 					"6080 Failed allocate NVME LS WQ\n");
8974 			goto out_error;
8975 		}
8976 		qdesc->chann = cpu;
8977 		phba->sli4_hba.nvmels_wq = qdesc;
8978 		list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);
8979 	}
8980 
8981 	/*
8982 	 * Create Receive Queue (RQ)
8983 	 */
8984 
8985 	/* Create Receive Queue for header */
8986 	qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
8987 				      phba->sli4_hba.rq_esize,
8988 				      phba->sli4_hba.rq_ecount, cpu);
8989 	if (!qdesc) {
8990 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8991 				"0506 Failed allocate receive HRQ\n");
8992 		goto out_error;
8993 	}
8994 	phba->sli4_hba.hdr_rq = qdesc;
8995 
8996 	/* Create Receive Queue for data */
8997 	qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
8998 				      phba->sli4_hba.rq_esize,
8999 				      phba->sli4_hba.rq_ecount, cpu);
9000 	if (!qdesc) {
9001 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9002 				"0507 Failed allocate receive DRQ\n");
9003 		goto out_error;
9004 	}
9005 	phba->sli4_hba.dat_rq = qdesc;
9006 
9007 	if ((phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) &&
9008 	    phba->nvmet_support) {
9009 		for (idx = 0; idx < phba->cfg_nvmet_mrq; idx++) {
9010 			cpu = lpfc_find_cpu_handle(phba, idx,
9011 						   LPFC_FIND_BY_HDWQ);
9012 			/* Create NVMET Receive Queue for header */
9013 			qdesc = lpfc_sli4_queue_alloc(phba,
9014 						      LPFC_DEFAULT_PAGE_SIZE,
9015 						      phba->sli4_hba.rq_esize,
9016 						      LPFC_NVMET_RQE_DEF_COUNT,
9017 						      cpu);
9018 			if (!qdesc) {
9019 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9020 						"3146 Failed allocate "
9021 						"receive HRQ\n");
9022 				goto out_error;
9023 			}
9024 			qdesc->hdwq = idx;
9025 			phba->sli4_hba.nvmet_mrq_hdr[idx] = qdesc;
9026 
9027 			/* Only needed for header of RQ pair */
9028 			qdesc->rqbp = kzalloc_node(sizeof(*qdesc->rqbp),
9029 						   GFP_KERNEL,
9030 						   cpu_to_node(cpu));
9031 			if (qdesc->rqbp == NULL) {
9032 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9033 						"6131 Failed allocate "
9034 						"Header RQBP\n");
9035 				goto out_error;
9036 			}
9037 
9038 			/* Put list in known state in case driver load fails. */
9039 			INIT_LIST_HEAD(&qdesc->rqbp->rqb_buffer_list);
9040 
9041 			/* Create NVMET Receive Queue for data */
9042 			qdesc = lpfc_sli4_queue_alloc(phba,
9043 						      LPFC_DEFAULT_PAGE_SIZE,
9044 						      phba->sli4_hba.rq_esize,
9045 						      LPFC_NVMET_RQE_DEF_COUNT,
9046 						      cpu);
9047 			if (!qdesc) {
9048 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9049 						"3156 Failed allocate "
9050 						"receive DRQ\n");
9051 				goto out_error;
9052 			}
9053 			qdesc->hdwq = idx;
9054 			phba->sli4_hba.nvmet_mrq_data[idx] = qdesc;
9055 		}
9056 	}
9057 
9058 	/* Clear NVME stats */
9059 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
9060 		for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
9061 			memset(&phba->sli4_hba.hdwq[idx].nvme_cstat, 0,
9062 			       sizeof(phba->sli4_hba.hdwq[idx].nvme_cstat));
9063 		}
9064 	}
9065 
9066 	/* Clear SCSI stats */
9067 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) {
9068 		for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
9069 			memset(&phba->sli4_hba.hdwq[idx].scsi_cstat, 0,
9070 			       sizeof(phba->sli4_hba.hdwq[idx].scsi_cstat));
9071 		}
9072 	}
9073 
9074 	return 0;
9075 
9076 out_error:
9077 	lpfc_sli4_queue_destroy(phba);
9078 	return -ENOMEM;
9079 }
9080 
9081 static inline void
__lpfc_sli4_release_queue(struct lpfc_queue ** qp)9082 __lpfc_sli4_release_queue(struct lpfc_queue **qp)
9083 {
9084 	if (*qp != NULL) {
9085 		lpfc_sli4_queue_free(*qp);
9086 		*qp = NULL;
9087 	}
9088 }
9089 
9090 static inline void
lpfc_sli4_release_queues(struct lpfc_queue *** qs,int max)9091 lpfc_sli4_release_queues(struct lpfc_queue ***qs, int max)
9092 {
9093 	int idx;
9094 
9095 	if (*qs == NULL)
9096 		return;
9097 
9098 	for (idx = 0; idx < max; idx++)
9099 		__lpfc_sli4_release_queue(&(*qs)[idx]);
9100 
9101 	kfree(*qs);
9102 	*qs = NULL;
9103 }
9104 
9105 static inline void
lpfc_sli4_release_hdwq(struct lpfc_hba * phba)9106 lpfc_sli4_release_hdwq(struct lpfc_hba *phba)
9107 {
9108 	struct lpfc_sli4_hdw_queue *hdwq;
9109 	struct lpfc_queue *eq;
9110 	uint32_t idx;
9111 
9112 	hdwq = phba->sli4_hba.hdwq;
9113 
9114 	/* Loop thru all Hardware Queues */
9115 	for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
9116 		/* Free the CQ/WQ corresponding to the Hardware Queue */
9117 		lpfc_sli4_queue_free(hdwq[idx].io_cq);
9118 		lpfc_sli4_queue_free(hdwq[idx].io_wq);
9119 		hdwq[idx].io_cq = NULL;
9120 		hdwq[idx].io_wq = NULL;
9121 		if (phba->cfg_xpsgl && !phba->nvmet_support)
9122 			lpfc_free_sgl_per_hdwq(phba, &hdwq[idx]);
9123 		lpfc_free_cmd_rsp_buf_per_hdwq(phba, &hdwq[idx]);
9124 	}
9125 	/* Loop thru all IRQ vectors */
9126 	for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
9127 		/* Free the EQ corresponding to the IRQ vector */
9128 		eq = phba->sli4_hba.hba_eq_hdl[idx].eq;
9129 		lpfc_sli4_queue_free(eq);
9130 		phba->sli4_hba.hba_eq_hdl[idx].eq = NULL;
9131 	}
9132 }
9133 
9134 /**
9135  * lpfc_sli4_queue_destroy - Destroy all the SLI4 queues
9136  * @phba: pointer to lpfc hba data structure.
9137  *
9138  * This routine is invoked to release all the SLI4 queues with the FCoE HBA
9139  * operation.
9140  *
9141  * Return codes
9142  *      0 - successful
9143  *      -ENOMEM - No available memory
9144  *      -EIO - The mailbox failed to complete successfully.
9145  **/
9146 void
lpfc_sli4_queue_destroy(struct lpfc_hba * phba)9147 lpfc_sli4_queue_destroy(struct lpfc_hba *phba)
9148 {
9149 	/*
9150 	 * Set FREE_INIT before beginning to free the queues.
9151 	 * Wait until the users of queues to acknowledge to
9152 	 * release queues by clearing FREE_WAIT.
9153 	 */
9154 	spin_lock_irq(&phba->hbalock);
9155 	phba->sli.sli_flag |= LPFC_QUEUE_FREE_INIT;
9156 	while (phba->sli.sli_flag & LPFC_QUEUE_FREE_WAIT) {
9157 		spin_unlock_irq(&phba->hbalock);
9158 		msleep(20);
9159 		spin_lock_irq(&phba->hbalock);
9160 	}
9161 	spin_unlock_irq(&phba->hbalock);
9162 
9163 	/* Release HBA eqs */
9164 	if (phba->sli4_hba.hdwq)
9165 		lpfc_sli4_release_hdwq(phba);
9166 
9167 	if (phba->nvmet_support) {
9168 		lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_cqset,
9169 					 phba->cfg_nvmet_mrq);
9170 
9171 		lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_mrq_hdr,
9172 					 phba->cfg_nvmet_mrq);
9173 		lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_mrq_data,
9174 					 phba->cfg_nvmet_mrq);
9175 	}
9176 
9177 	/* Release mailbox command work queue */
9178 	__lpfc_sli4_release_queue(&phba->sli4_hba.mbx_wq);
9179 
9180 	/* Release ELS work queue */
9181 	__lpfc_sli4_release_queue(&phba->sli4_hba.els_wq);
9182 
9183 	/* Release ELS work queue */
9184 	__lpfc_sli4_release_queue(&phba->sli4_hba.nvmels_wq);
9185 
9186 	/* Release unsolicited receive queue */
9187 	__lpfc_sli4_release_queue(&phba->sli4_hba.hdr_rq);
9188 	__lpfc_sli4_release_queue(&phba->sli4_hba.dat_rq);
9189 
9190 	/* Release ELS complete queue */
9191 	__lpfc_sli4_release_queue(&phba->sli4_hba.els_cq);
9192 
9193 	/* Release NVME LS complete queue */
9194 	__lpfc_sli4_release_queue(&phba->sli4_hba.nvmels_cq);
9195 
9196 	/* Release mailbox command complete queue */
9197 	__lpfc_sli4_release_queue(&phba->sli4_hba.mbx_cq);
9198 
9199 	/* Everything on this list has been freed */
9200 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_wq_list);
9201 
9202 	/* Done with freeing the queues */
9203 	spin_lock_irq(&phba->hbalock);
9204 	phba->sli.sli_flag &= ~LPFC_QUEUE_FREE_INIT;
9205 	spin_unlock_irq(&phba->hbalock);
9206 }
9207 
9208 int
lpfc_free_rq_buffer(struct lpfc_hba * phba,struct lpfc_queue * rq)9209 lpfc_free_rq_buffer(struct lpfc_hba *phba, struct lpfc_queue *rq)
9210 {
9211 	struct lpfc_rqb *rqbp;
9212 	struct lpfc_dmabuf *h_buf;
9213 	struct rqb_dmabuf *rqb_buffer;
9214 
9215 	rqbp = rq->rqbp;
9216 	while (!list_empty(&rqbp->rqb_buffer_list)) {
9217 		list_remove_head(&rqbp->rqb_buffer_list, h_buf,
9218 				 struct lpfc_dmabuf, list);
9219 
9220 		rqb_buffer = container_of(h_buf, struct rqb_dmabuf, hbuf);
9221 		(rqbp->rqb_free_buffer)(phba, rqb_buffer);
9222 		rqbp->buffer_count--;
9223 	}
9224 	return 1;
9225 }
9226 
9227 static int
lpfc_create_wq_cq(struct lpfc_hba * phba,struct lpfc_queue * eq,struct lpfc_queue * cq,struct lpfc_queue * wq,uint16_t * cq_map,int qidx,uint32_t qtype)9228 lpfc_create_wq_cq(struct lpfc_hba *phba, struct lpfc_queue *eq,
9229 	struct lpfc_queue *cq, struct lpfc_queue *wq, uint16_t *cq_map,
9230 	int qidx, uint32_t qtype)
9231 {
9232 	struct lpfc_sli_ring *pring;
9233 	int rc;
9234 
9235 	if (!eq || !cq || !wq) {
9236 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9237 			"6085 Fast-path %s (%d) not allocated\n",
9238 			((eq) ? ((cq) ? "WQ" : "CQ") : "EQ"), qidx);
9239 		return -ENOMEM;
9240 	}
9241 
9242 	/* create the Cq first */
9243 	rc = lpfc_cq_create(phba, cq, eq,
9244 			(qtype == LPFC_MBOX) ? LPFC_MCQ : LPFC_WCQ, qtype);
9245 	if (rc) {
9246 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9247 			"6086 Failed setup of CQ (%d), rc = 0x%x\n",
9248 			qidx, (uint32_t)rc);
9249 		return rc;
9250 	}
9251 
9252 	if (qtype != LPFC_MBOX) {
9253 		/* Setup cq_map for fast lookup */
9254 		if (cq_map)
9255 			*cq_map = cq->queue_id;
9256 
9257 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9258 			"6087 CQ setup: cq[%d]-id=%d, parent eq[%d]-id=%d\n",
9259 			qidx, cq->queue_id, qidx, eq->queue_id);
9260 
9261 		/* create the wq */
9262 		rc = lpfc_wq_create(phba, wq, cq, qtype);
9263 		if (rc) {
9264 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9265 				"4618 Fail setup fastpath WQ (%d), rc = 0x%x\n",
9266 				qidx, (uint32_t)rc);
9267 			/* no need to tear down cq - caller will do so */
9268 			return rc;
9269 		}
9270 
9271 		/* Bind this CQ/WQ to the NVME ring */
9272 		pring = wq->pring;
9273 		pring->sli.sli4.wqp = (void *)wq;
9274 		cq->pring = pring;
9275 
9276 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9277 			"2593 WQ setup: wq[%d]-id=%d assoc=%d, cq[%d]-id=%d\n",
9278 			qidx, wq->queue_id, wq->assoc_qid, qidx, cq->queue_id);
9279 	} else {
9280 		rc = lpfc_mq_create(phba, wq, cq, LPFC_MBOX);
9281 		if (rc) {
9282 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9283 				"0539 Failed setup of slow-path MQ: "
9284 				"rc = 0x%x\n", rc);
9285 			/* no need to tear down cq - caller will do so */
9286 			return rc;
9287 		}
9288 
9289 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9290 			"2589 MBX MQ setup: wq-id=%d, parent cq-id=%d\n",
9291 			phba->sli4_hba.mbx_wq->queue_id,
9292 			phba->sli4_hba.mbx_cq->queue_id);
9293 	}
9294 
9295 	return 0;
9296 }
9297 
9298 /**
9299  * lpfc_setup_cq_lookup - Setup the CQ lookup table
9300  * @phba: pointer to lpfc hba data structure.
9301  *
9302  * This routine will populate the cq_lookup table by all
9303  * available CQ queue_id's.
9304  **/
9305 static void
lpfc_setup_cq_lookup(struct lpfc_hba * phba)9306 lpfc_setup_cq_lookup(struct lpfc_hba *phba)
9307 {
9308 	struct lpfc_queue *eq, *childq;
9309 	int qidx;
9310 
9311 	memset(phba->sli4_hba.cq_lookup, 0,
9312 	       (sizeof(struct lpfc_queue *) * (phba->sli4_hba.cq_max + 1)));
9313 	/* Loop thru all IRQ vectors */
9314 	for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
9315 		/* Get the EQ corresponding to the IRQ vector */
9316 		eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;
9317 		if (!eq)
9318 			continue;
9319 		/* Loop through all CQs associated with that EQ */
9320 		list_for_each_entry(childq, &eq->child_list, list) {
9321 			if (childq->queue_id > phba->sli4_hba.cq_max)
9322 				continue;
9323 			if (childq->subtype == LPFC_IO)
9324 				phba->sli4_hba.cq_lookup[childq->queue_id] =
9325 					childq;
9326 		}
9327 	}
9328 }
9329 
9330 /**
9331  * lpfc_sli4_queue_setup - Set up all the SLI4 queues
9332  * @phba: pointer to lpfc hba data structure.
9333  *
9334  * This routine is invoked to set up all the SLI4 queues for the FCoE HBA
9335  * operation.
9336  *
9337  * Return codes
9338  *      0 - successful
9339  *      -ENOMEM - No available memory
9340  *      -EIO - The mailbox failed to complete successfully.
9341  **/
9342 int
lpfc_sli4_queue_setup(struct lpfc_hba * phba)9343 lpfc_sli4_queue_setup(struct lpfc_hba *phba)
9344 {
9345 	uint32_t shdr_status, shdr_add_status;
9346 	union lpfc_sli4_cfg_shdr *shdr;
9347 	struct lpfc_vector_map_info *cpup;
9348 	struct lpfc_sli4_hdw_queue *qp;
9349 	LPFC_MBOXQ_t *mboxq;
9350 	int qidx, cpu;
9351 	uint32_t length, usdelay;
9352 	int rc = -ENOMEM;
9353 
9354 	/* Check for dual-ULP support */
9355 	mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
9356 	if (!mboxq) {
9357 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9358 				"3249 Unable to allocate memory for "
9359 				"QUERY_FW_CFG mailbox command\n");
9360 		return -ENOMEM;
9361 	}
9362 	length = (sizeof(struct lpfc_mbx_query_fw_config) -
9363 		  sizeof(struct lpfc_sli4_cfg_mhdr));
9364 	lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
9365 			 LPFC_MBOX_OPCODE_QUERY_FW_CFG,
9366 			 length, LPFC_SLI4_MBX_EMBED);
9367 
9368 	rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
9369 
9370 	shdr = (union lpfc_sli4_cfg_shdr *)
9371 			&mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
9372 	shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9373 	shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9374 	if (shdr_status || shdr_add_status || rc) {
9375 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9376 				"3250 QUERY_FW_CFG mailbox failed with status "
9377 				"x%x add_status x%x, mbx status x%x\n",
9378 				shdr_status, shdr_add_status, rc);
9379 		if (rc != MBX_TIMEOUT)
9380 			mempool_free(mboxq, phba->mbox_mem_pool);
9381 		rc = -ENXIO;
9382 		goto out_error;
9383 	}
9384 
9385 	phba->sli4_hba.fw_func_mode =
9386 			mboxq->u.mqe.un.query_fw_cfg.rsp.function_mode;
9387 	phba->sli4_hba.ulp0_mode = mboxq->u.mqe.un.query_fw_cfg.rsp.ulp0_mode;
9388 	phba->sli4_hba.ulp1_mode = mboxq->u.mqe.un.query_fw_cfg.rsp.ulp1_mode;
9389 	phba->sli4_hba.physical_port =
9390 			mboxq->u.mqe.un.query_fw_cfg.rsp.physical_port;
9391 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9392 			"3251 QUERY_FW_CFG: func_mode:x%x, ulp0_mode:x%x, "
9393 			"ulp1_mode:x%x\n", phba->sli4_hba.fw_func_mode,
9394 			phba->sli4_hba.ulp0_mode, phba->sli4_hba.ulp1_mode);
9395 
9396 	if (rc != MBX_TIMEOUT)
9397 		mempool_free(mboxq, phba->mbox_mem_pool);
9398 
9399 	/*
9400 	 * Set up HBA Event Queues (EQs)
9401 	 */
9402 	qp = phba->sli4_hba.hdwq;
9403 
9404 	/* Set up HBA event queue */
9405 	if (!qp) {
9406 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9407 				"3147 Fast-path EQs not allocated\n");
9408 		rc = -ENOMEM;
9409 		goto out_error;
9410 	}
9411 
9412 	/* Loop thru all IRQ vectors */
9413 	for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
9414 		/* Create HBA Event Queues (EQs) in order */
9415 		for_each_present_cpu(cpu) {
9416 			cpup = &phba->sli4_hba.cpu_map[cpu];
9417 
9418 			/* Look for the CPU thats using that vector with
9419 			 * LPFC_CPU_FIRST_IRQ set.
9420 			 */
9421 			if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
9422 				continue;
9423 			if (qidx != cpup->eq)
9424 				continue;
9425 
9426 			/* Create an EQ for that vector */
9427 			rc = lpfc_eq_create(phba, qp[cpup->hdwq].hba_eq,
9428 					    phba->cfg_fcp_imax);
9429 			if (rc) {
9430 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9431 						"0523 Failed setup of fast-path"
9432 						" EQ (%d), rc = 0x%x\n",
9433 						cpup->eq, (uint32_t)rc);
9434 				goto out_destroy;
9435 			}
9436 
9437 			/* Save the EQ for that vector in the hba_eq_hdl */
9438 			phba->sli4_hba.hba_eq_hdl[cpup->eq].eq =
9439 				qp[cpup->hdwq].hba_eq;
9440 
9441 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9442 					"2584 HBA EQ setup: queue[%d]-id=%d\n",
9443 					cpup->eq,
9444 					qp[cpup->hdwq].hba_eq->queue_id);
9445 		}
9446 	}
9447 
9448 	/* Loop thru all Hardware Queues */
9449 	for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
9450 		cpu = lpfc_find_cpu_handle(phba, qidx, LPFC_FIND_BY_HDWQ);
9451 		cpup = &phba->sli4_hba.cpu_map[cpu];
9452 
9453 		/* Create the CQ/WQ corresponding to the Hardware Queue */
9454 		rc = lpfc_create_wq_cq(phba,
9455 				       phba->sli4_hba.hdwq[cpup->hdwq].hba_eq,
9456 				       qp[qidx].io_cq,
9457 				       qp[qidx].io_wq,
9458 				       &phba->sli4_hba.hdwq[qidx].io_cq_map,
9459 				       qidx,
9460 				       LPFC_IO);
9461 		if (rc) {
9462 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9463 					"0535 Failed to setup fastpath "
9464 					"IO WQ/CQ (%d), rc = 0x%x\n",
9465 					qidx, (uint32_t)rc);
9466 			goto out_destroy;
9467 		}
9468 	}
9469 
9470 	/*
9471 	 * Set up Slow Path Complete Queues (CQs)
9472 	 */
9473 
9474 	/* Set up slow-path MBOX CQ/MQ */
9475 
9476 	if (!phba->sli4_hba.mbx_cq || !phba->sli4_hba.mbx_wq) {
9477 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9478 				"0528 %s not allocated\n",
9479 				phba->sli4_hba.mbx_cq ?
9480 				"Mailbox WQ" : "Mailbox CQ");
9481 		rc = -ENOMEM;
9482 		goto out_destroy;
9483 	}
9484 
9485 	rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,
9486 			       phba->sli4_hba.mbx_cq,
9487 			       phba->sli4_hba.mbx_wq,
9488 			       NULL, 0, LPFC_MBOX);
9489 	if (rc) {
9490 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9491 			"0529 Failed setup of mailbox WQ/CQ: rc = 0x%x\n",
9492 			(uint32_t)rc);
9493 		goto out_destroy;
9494 	}
9495 	if (phba->nvmet_support) {
9496 		if (!phba->sli4_hba.nvmet_cqset) {
9497 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9498 					"3165 Fast-path NVME CQ Set "
9499 					"array not allocated\n");
9500 			rc = -ENOMEM;
9501 			goto out_destroy;
9502 		}
9503 		if (phba->cfg_nvmet_mrq > 1) {
9504 			rc = lpfc_cq_create_set(phba,
9505 					phba->sli4_hba.nvmet_cqset,
9506 					qp,
9507 					LPFC_WCQ, LPFC_NVMET);
9508 			if (rc) {
9509 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9510 						"3164 Failed setup of NVME CQ "
9511 						"Set, rc = 0x%x\n",
9512 						(uint32_t)rc);
9513 				goto out_destroy;
9514 			}
9515 		} else {
9516 			/* Set up NVMET Receive Complete Queue */
9517 			rc = lpfc_cq_create(phba, phba->sli4_hba.nvmet_cqset[0],
9518 					    qp[0].hba_eq,
9519 					    LPFC_WCQ, LPFC_NVMET);
9520 			if (rc) {
9521 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9522 						"6089 Failed setup NVMET CQ: "
9523 						"rc = 0x%x\n", (uint32_t)rc);
9524 				goto out_destroy;
9525 			}
9526 			phba->sli4_hba.nvmet_cqset[0]->chann = 0;
9527 
9528 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9529 					"6090 NVMET CQ setup: cq-id=%d, "
9530 					"parent eq-id=%d\n",
9531 					phba->sli4_hba.nvmet_cqset[0]->queue_id,
9532 					qp[0].hba_eq->queue_id);
9533 		}
9534 	}
9535 
9536 	/* Set up slow-path ELS WQ/CQ */
9537 	if (!phba->sli4_hba.els_cq || !phba->sli4_hba.els_wq) {
9538 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9539 				"0530 ELS %s not allocated\n",
9540 				phba->sli4_hba.els_cq ? "WQ" : "CQ");
9541 		rc = -ENOMEM;
9542 		goto out_destroy;
9543 	}
9544 	rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,
9545 			       phba->sli4_hba.els_cq,
9546 			       phba->sli4_hba.els_wq,
9547 			       NULL, 0, LPFC_ELS);
9548 	if (rc) {
9549 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9550 				"0525 Failed setup of ELS WQ/CQ: rc = 0x%x\n",
9551 				(uint32_t)rc);
9552 		goto out_destroy;
9553 	}
9554 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9555 			"2590 ELS WQ setup: wq-id=%d, parent cq-id=%d\n",
9556 			phba->sli4_hba.els_wq->queue_id,
9557 			phba->sli4_hba.els_cq->queue_id);
9558 
9559 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
9560 		/* Set up NVME LS Complete Queue */
9561 		if (!phba->sli4_hba.nvmels_cq || !phba->sli4_hba.nvmels_wq) {
9562 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9563 					"6091 LS %s not allocated\n",
9564 					phba->sli4_hba.nvmels_cq ? "WQ" : "CQ");
9565 			rc = -ENOMEM;
9566 			goto out_destroy;
9567 		}
9568 		rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,
9569 				       phba->sli4_hba.nvmels_cq,
9570 				       phba->sli4_hba.nvmels_wq,
9571 				       NULL, 0, LPFC_NVME_LS);
9572 		if (rc) {
9573 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9574 					"0526 Failed setup of NVVME LS WQ/CQ: "
9575 					"rc = 0x%x\n", (uint32_t)rc);
9576 			goto out_destroy;
9577 		}
9578 
9579 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9580 				"6096 ELS WQ setup: wq-id=%d, "
9581 				"parent cq-id=%d\n",
9582 				phba->sli4_hba.nvmels_wq->queue_id,
9583 				phba->sli4_hba.nvmels_cq->queue_id);
9584 	}
9585 
9586 	/*
9587 	 * Create NVMET Receive Queue (RQ)
9588 	 */
9589 	if (phba->nvmet_support) {
9590 		if ((!phba->sli4_hba.nvmet_cqset) ||
9591 		    (!phba->sli4_hba.nvmet_mrq_hdr) ||
9592 		    (!phba->sli4_hba.nvmet_mrq_data)) {
9593 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9594 					"6130 MRQ CQ Queues not "
9595 					"allocated\n");
9596 			rc = -ENOMEM;
9597 			goto out_destroy;
9598 		}
9599 		if (phba->cfg_nvmet_mrq > 1) {
9600 			rc = lpfc_mrq_create(phba,
9601 					     phba->sli4_hba.nvmet_mrq_hdr,
9602 					     phba->sli4_hba.nvmet_mrq_data,
9603 					     phba->sli4_hba.nvmet_cqset,
9604 					     LPFC_NVMET);
9605 			if (rc) {
9606 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9607 						"6098 Failed setup of NVMET "
9608 						"MRQ: rc = 0x%x\n",
9609 						(uint32_t)rc);
9610 				goto out_destroy;
9611 			}
9612 
9613 		} else {
9614 			rc = lpfc_rq_create(phba,
9615 					    phba->sli4_hba.nvmet_mrq_hdr[0],
9616 					    phba->sli4_hba.nvmet_mrq_data[0],
9617 					    phba->sli4_hba.nvmet_cqset[0],
9618 					    LPFC_NVMET);
9619 			if (rc) {
9620 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9621 						"6057 Failed setup of NVMET "
9622 						"Receive Queue: rc = 0x%x\n",
9623 						(uint32_t)rc);
9624 				goto out_destroy;
9625 			}
9626 
9627 			lpfc_printf_log(
9628 				phba, KERN_INFO, LOG_INIT,
9629 				"6099 NVMET RQ setup: hdr-rq-id=%d, "
9630 				"dat-rq-id=%d parent cq-id=%d\n",
9631 				phba->sli4_hba.nvmet_mrq_hdr[0]->queue_id,
9632 				phba->sli4_hba.nvmet_mrq_data[0]->queue_id,
9633 				phba->sli4_hba.nvmet_cqset[0]->queue_id);
9634 
9635 		}
9636 	}
9637 
9638 	if (!phba->sli4_hba.hdr_rq || !phba->sli4_hba.dat_rq) {
9639 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9640 				"0540 Receive Queue not allocated\n");
9641 		rc = -ENOMEM;
9642 		goto out_destroy;
9643 	}
9644 
9645 	rc = lpfc_rq_create(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq,
9646 			    phba->sli4_hba.els_cq, LPFC_USOL);
9647 	if (rc) {
9648 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9649 				"0541 Failed setup of Receive Queue: "
9650 				"rc = 0x%x\n", (uint32_t)rc);
9651 		goto out_destroy;
9652 	}
9653 
9654 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9655 			"2592 USL RQ setup: hdr-rq-id=%d, dat-rq-id=%d "
9656 			"parent cq-id=%d\n",
9657 			phba->sli4_hba.hdr_rq->queue_id,
9658 			phba->sli4_hba.dat_rq->queue_id,
9659 			phba->sli4_hba.els_cq->queue_id);
9660 
9661 	if (phba->cfg_fcp_imax)
9662 		usdelay = LPFC_SEC_TO_USEC / phba->cfg_fcp_imax;
9663 	else
9664 		usdelay = 0;
9665 
9666 	for (qidx = 0; qidx < phba->cfg_irq_chann;
9667 	     qidx += LPFC_MAX_EQ_DELAY_EQID_CNT)
9668 		lpfc_modify_hba_eq_delay(phba, qidx, LPFC_MAX_EQ_DELAY_EQID_CNT,
9669 					 usdelay);
9670 
9671 	if (phba->sli4_hba.cq_max) {
9672 		kfree(phba->sli4_hba.cq_lookup);
9673 		phba->sli4_hba.cq_lookup = kcalloc((phba->sli4_hba.cq_max + 1),
9674 			sizeof(struct lpfc_queue *), GFP_KERNEL);
9675 		if (!phba->sli4_hba.cq_lookup) {
9676 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9677 					"0549 Failed setup of CQ Lookup table: "
9678 					"size 0x%x\n", phba->sli4_hba.cq_max);
9679 			rc = -ENOMEM;
9680 			goto out_destroy;
9681 		}
9682 		lpfc_setup_cq_lookup(phba);
9683 	}
9684 	return 0;
9685 
9686 out_destroy:
9687 	lpfc_sli4_queue_unset(phba);
9688 out_error:
9689 	return rc;
9690 }
9691 
9692 /**
9693  * lpfc_sli4_queue_unset - Unset all the SLI4 queues
9694  * @phba: pointer to lpfc hba data structure.
9695  *
9696  * This routine is invoked to unset all the SLI4 queues with the FCoE HBA
9697  * operation.
9698  *
9699  * Return codes
9700  *      0 - successful
9701  *      -ENOMEM - No available memory
9702  *      -EIO - The mailbox failed to complete successfully.
9703  **/
9704 void
lpfc_sli4_queue_unset(struct lpfc_hba * phba)9705 lpfc_sli4_queue_unset(struct lpfc_hba *phba)
9706 {
9707 	struct lpfc_sli4_hdw_queue *qp;
9708 	struct lpfc_queue *eq;
9709 	int qidx;
9710 
9711 	/* Unset mailbox command work queue */
9712 	if (phba->sli4_hba.mbx_wq)
9713 		lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq);
9714 
9715 	/* Unset NVME LS work queue */
9716 	if (phba->sli4_hba.nvmels_wq)
9717 		lpfc_wq_destroy(phba, phba->sli4_hba.nvmels_wq);
9718 
9719 	/* Unset ELS work queue */
9720 	if (phba->sli4_hba.els_wq)
9721 		lpfc_wq_destroy(phba, phba->sli4_hba.els_wq);
9722 
9723 	/* Unset unsolicited receive queue */
9724 	if (phba->sli4_hba.hdr_rq)
9725 		lpfc_rq_destroy(phba, phba->sli4_hba.hdr_rq,
9726 				phba->sli4_hba.dat_rq);
9727 
9728 	/* Unset mailbox command complete queue */
9729 	if (phba->sli4_hba.mbx_cq)
9730 		lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq);
9731 
9732 	/* Unset ELS complete queue */
9733 	if (phba->sli4_hba.els_cq)
9734 		lpfc_cq_destroy(phba, phba->sli4_hba.els_cq);
9735 
9736 	/* Unset NVME LS complete queue */
9737 	if (phba->sli4_hba.nvmels_cq)
9738 		lpfc_cq_destroy(phba, phba->sli4_hba.nvmels_cq);
9739 
9740 	if (phba->nvmet_support) {
9741 		/* Unset NVMET MRQ queue */
9742 		if (phba->sli4_hba.nvmet_mrq_hdr) {
9743 			for (qidx = 0; qidx < phba->cfg_nvmet_mrq; qidx++)
9744 				lpfc_rq_destroy(
9745 					phba,
9746 					phba->sli4_hba.nvmet_mrq_hdr[qidx],
9747 					phba->sli4_hba.nvmet_mrq_data[qidx]);
9748 		}
9749 
9750 		/* Unset NVMET CQ Set complete queue */
9751 		if (phba->sli4_hba.nvmet_cqset) {
9752 			for (qidx = 0; qidx < phba->cfg_nvmet_mrq; qidx++)
9753 				lpfc_cq_destroy(
9754 					phba, phba->sli4_hba.nvmet_cqset[qidx]);
9755 		}
9756 	}
9757 
9758 	/* Unset fast-path SLI4 queues */
9759 	if (phba->sli4_hba.hdwq) {
9760 		/* Loop thru all Hardware Queues */
9761 		for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
9762 			/* Destroy the CQ/WQ corresponding to Hardware Queue */
9763 			qp = &phba->sli4_hba.hdwq[qidx];
9764 			lpfc_wq_destroy(phba, qp->io_wq);
9765 			lpfc_cq_destroy(phba, qp->io_cq);
9766 		}
9767 		/* Loop thru all IRQ vectors */
9768 		for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
9769 			/* Destroy the EQ corresponding to the IRQ vector */
9770 			eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;
9771 			lpfc_eq_destroy(phba, eq);
9772 		}
9773 	}
9774 
9775 	kfree(phba->sli4_hba.cq_lookup);
9776 	phba->sli4_hba.cq_lookup = NULL;
9777 	phba->sli4_hba.cq_max = 0;
9778 }
9779 
9780 /**
9781  * lpfc_sli4_cq_event_pool_create - Create completion-queue event free pool
9782  * @phba: pointer to lpfc hba data structure.
9783  *
9784  * This routine is invoked to allocate and set up a pool of completion queue
9785  * events. The body of the completion queue event is a completion queue entry
9786  * CQE. For now, this pool is used for the interrupt service routine to queue
9787  * the following HBA completion queue events for the worker thread to process:
9788  *   - Mailbox asynchronous events
9789  *   - Receive queue completion unsolicited events
9790  * Later, this can be used for all the slow-path events.
9791  *
9792  * Return codes
9793  *      0 - successful
9794  *      -ENOMEM - No available memory
9795  **/
9796 static int
lpfc_sli4_cq_event_pool_create(struct lpfc_hba * phba)9797 lpfc_sli4_cq_event_pool_create(struct lpfc_hba *phba)
9798 {
9799 	struct lpfc_cq_event *cq_event;
9800 	int i;
9801 
9802 	for (i = 0; i < (4 * phba->sli4_hba.cq_ecount); i++) {
9803 		cq_event = kmalloc(sizeof(struct lpfc_cq_event), GFP_KERNEL);
9804 		if (!cq_event)
9805 			goto out_pool_create_fail;
9806 		list_add_tail(&cq_event->list,
9807 			      &phba->sli4_hba.sp_cqe_event_pool);
9808 	}
9809 	return 0;
9810 
9811 out_pool_create_fail:
9812 	lpfc_sli4_cq_event_pool_destroy(phba);
9813 	return -ENOMEM;
9814 }
9815 
9816 /**
9817  * lpfc_sli4_cq_event_pool_destroy - Free completion-queue event free pool
9818  * @phba: pointer to lpfc hba data structure.
9819  *
9820  * This routine is invoked to free the pool of completion queue events at
9821  * driver unload time. Note that, it is the responsibility of the driver
9822  * cleanup routine to free all the outstanding completion-queue events
9823  * allocated from this pool back into the pool before invoking this routine
9824  * to destroy the pool.
9825  **/
9826 static void
lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba * phba)9827 lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *phba)
9828 {
9829 	struct lpfc_cq_event *cq_event, *next_cq_event;
9830 
9831 	list_for_each_entry_safe(cq_event, next_cq_event,
9832 				 &phba->sli4_hba.sp_cqe_event_pool, list) {
9833 		list_del(&cq_event->list);
9834 		kfree(cq_event);
9835 	}
9836 }
9837 
9838 /**
9839  * __lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
9840  * @phba: pointer to lpfc hba data structure.
9841  *
9842  * This routine is the lock free version of the API invoked to allocate a
9843  * completion-queue event from the free pool.
9844  *
9845  * Return: Pointer to the newly allocated completion-queue event if successful
9846  *         NULL otherwise.
9847  **/
9848 struct lpfc_cq_event *
__lpfc_sli4_cq_event_alloc(struct lpfc_hba * phba)9849 __lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
9850 {
9851 	struct lpfc_cq_event *cq_event = NULL;
9852 
9853 	list_remove_head(&phba->sli4_hba.sp_cqe_event_pool, cq_event,
9854 			 struct lpfc_cq_event, list);
9855 	return cq_event;
9856 }
9857 
9858 /**
9859  * lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
9860  * @phba: pointer to lpfc hba data structure.
9861  *
9862  * This routine is the lock version of the API invoked to allocate a
9863  * completion-queue event from the free pool.
9864  *
9865  * Return: Pointer to the newly allocated completion-queue event if successful
9866  *         NULL otherwise.
9867  **/
9868 struct lpfc_cq_event *
lpfc_sli4_cq_event_alloc(struct lpfc_hba * phba)9869 lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
9870 {
9871 	struct lpfc_cq_event *cq_event;
9872 	unsigned long iflags;
9873 
9874 	spin_lock_irqsave(&phba->hbalock, iflags);
9875 	cq_event = __lpfc_sli4_cq_event_alloc(phba);
9876 	spin_unlock_irqrestore(&phba->hbalock, iflags);
9877 	return cq_event;
9878 }
9879 
9880 /**
9881  * __lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
9882  * @phba: pointer to lpfc hba data structure.
9883  * @cq_event: pointer to the completion queue event to be freed.
9884  *
9885  * This routine is the lock free version of the API invoked to release a
9886  * completion-queue event back into the free pool.
9887  **/
9888 void
__lpfc_sli4_cq_event_release(struct lpfc_hba * phba,struct lpfc_cq_event * cq_event)9889 __lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
9890 			     struct lpfc_cq_event *cq_event)
9891 {
9892 	list_add_tail(&cq_event->list, &phba->sli4_hba.sp_cqe_event_pool);
9893 }
9894 
9895 /**
9896  * lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
9897  * @phba: pointer to lpfc hba data structure.
9898  * @cq_event: pointer to the completion queue event to be freed.
9899  *
9900  * This routine is the lock version of the API invoked to release a
9901  * completion-queue event back into the free pool.
9902  **/
9903 void
lpfc_sli4_cq_event_release(struct lpfc_hba * phba,struct lpfc_cq_event * cq_event)9904 lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
9905 			   struct lpfc_cq_event *cq_event)
9906 {
9907 	unsigned long iflags;
9908 	spin_lock_irqsave(&phba->hbalock, iflags);
9909 	__lpfc_sli4_cq_event_release(phba, cq_event);
9910 	spin_unlock_irqrestore(&phba->hbalock, iflags);
9911 }
9912 
9913 /**
9914  * lpfc_sli4_cq_event_release_all - Release all cq events to the free pool
9915  * @phba: pointer to lpfc hba data structure.
9916  *
9917  * This routine is to free all the pending completion-queue events to the
9918  * back into the free pool for device reset.
9919  **/
9920 static void
lpfc_sli4_cq_event_release_all(struct lpfc_hba * phba)9921 lpfc_sli4_cq_event_release_all(struct lpfc_hba *phba)
9922 {
9923 	LIST_HEAD(cqelist);
9924 	struct lpfc_cq_event *cqe;
9925 	unsigned long iflags;
9926 
9927 	/* Retrieve all the pending WCQEs from pending WCQE lists */
9928 	spin_lock_irqsave(&phba->hbalock, iflags);
9929 	/* Pending FCP XRI abort events */
9930 	list_splice_init(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue,
9931 			 &cqelist);
9932 	/* Pending ELS XRI abort events */
9933 	list_splice_init(&phba->sli4_hba.sp_els_xri_aborted_work_queue,
9934 			 &cqelist);
9935 	/* Pending asynnc events */
9936 	list_splice_init(&phba->sli4_hba.sp_asynce_work_queue,
9937 			 &cqelist);
9938 	spin_unlock_irqrestore(&phba->hbalock, iflags);
9939 
9940 	while (!list_empty(&cqelist)) {
9941 		list_remove_head(&cqelist, cqe, struct lpfc_cq_event, list);
9942 		lpfc_sli4_cq_event_release(phba, cqe);
9943 	}
9944 }
9945 
9946 /**
9947  * lpfc_pci_function_reset - Reset pci function.
9948  * @phba: pointer to lpfc hba data structure.
9949  *
9950  * This routine is invoked to request a PCI function reset. It will destroys
9951  * all resources assigned to the PCI function which originates this request.
9952  *
9953  * Return codes
9954  *      0 - successful
9955  *      -ENOMEM - No available memory
9956  *      -EIO - The mailbox failed to complete successfully.
9957  **/
9958 int
lpfc_pci_function_reset(struct lpfc_hba * phba)9959 lpfc_pci_function_reset(struct lpfc_hba *phba)
9960 {
9961 	LPFC_MBOXQ_t *mboxq;
9962 	uint32_t rc = 0, if_type;
9963 	uint32_t shdr_status, shdr_add_status;
9964 	uint32_t rdy_chk;
9965 	uint32_t port_reset = 0;
9966 	union lpfc_sli4_cfg_shdr *shdr;
9967 	struct lpfc_register reg_data;
9968 	uint16_t devid;
9969 
9970 	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
9971 	switch (if_type) {
9972 	case LPFC_SLI_INTF_IF_TYPE_0:
9973 		mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
9974 						       GFP_KERNEL);
9975 		if (!mboxq) {
9976 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9977 					"0494 Unable to allocate memory for "
9978 					"issuing SLI_FUNCTION_RESET mailbox "
9979 					"command\n");
9980 			return -ENOMEM;
9981 		}
9982 
9983 		/* Setup PCI function reset mailbox-ioctl command */
9984 		lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
9985 				 LPFC_MBOX_OPCODE_FUNCTION_RESET, 0,
9986 				 LPFC_SLI4_MBX_EMBED);
9987 		rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
9988 		shdr = (union lpfc_sli4_cfg_shdr *)
9989 			&mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
9990 		shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9991 		shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
9992 					 &shdr->response);
9993 		if (rc != MBX_TIMEOUT)
9994 			mempool_free(mboxq, phba->mbox_mem_pool);
9995 		if (shdr_status || shdr_add_status || rc) {
9996 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9997 					"0495 SLI_FUNCTION_RESET mailbox "
9998 					"failed with status x%x add_status x%x,"
9999 					" mbx status x%x\n",
10000 					shdr_status, shdr_add_status, rc);
10001 			rc = -ENXIO;
10002 		}
10003 		break;
10004 	case LPFC_SLI_INTF_IF_TYPE_2:
10005 	case LPFC_SLI_INTF_IF_TYPE_6:
10006 wait:
10007 		/*
10008 		 * Poll the Port Status Register and wait for RDY for
10009 		 * up to 30 seconds. If the port doesn't respond, treat
10010 		 * it as an error.
10011 		 */
10012 		for (rdy_chk = 0; rdy_chk < 1500; rdy_chk++) {
10013 			if (lpfc_readl(phba->sli4_hba.u.if_type2.
10014 				STATUSregaddr, &reg_data.word0)) {
10015 				rc = -ENODEV;
10016 				goto out;
10017 			}
10018 			if (bf_get(lpfc_sliport_status_rdy, &reg_data))
10019 				break;
10020 			msleep(20);
10021 		}
10022 
10023 		if (!bf_get(lpfc_sliport_status_rdy, &reg_data)) {
10024 			phba->work_status[0] = readl(
10025 				phba->sli4_hba.u.if_type2.ERR1regaddr);
10026 			phba->work_status[1] = readl(
10027 				phba->sli4_hba.u.if_type2.ERR2regaddr);
10028 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10029 					"2890 Port not ready, port status reg "
10030 					"0x%x error 1=0x%x, error 2=0x%x\n",
10031 					reg_data.word0,
10032 					phba->work_status[0],
10033 					phba->work_status[1]);
10034 			rc = -ENODEV;
10035 			goto out;
10036 		}
10037 
10038 		if (!port_reset) {
10039 			/*
10040 			 * Reset the port now
10041 			 */
10042 			reg_data.word0 = 0;
10043 			bf_set(lpfc_sliport_ctrl_end, &reg_data,
10044 			       LPFC_SLIPORT_LITTLE_ENDIAN);
10045 			bf_set(lpfc_sliport_ctrl_ip, &reg_data,
10046 			       LPFC_SLIPORT_INIT_PORT);
10047 			writel(reg_data.word0, phba->sli4_hba.u.if_type2.
10048 			       CTRLregaddr);
10049 			/* flush */
10050 			pci_read_config_word(phba->pcidev,
10051 					     PCI_DEVICE_ID, &devid);
10052 
10053 			port_reset = 1;
10054 			msleep(20);
10055 			goto wait;
10056 		} else if (bf_get(lpfc_sliport_status_rn, &reg_data)) {
10057 			rc = -ENODEV;
10058 			goto out;
10059 		}
10060 		break;
10061 
10062 	case LPFC_SLI_INTF_IF_TYPE_1:
10063 	default:
10064 		break;
10065 	}
10066 
10067 out:
10068 	/* Catch the not-ready port failure after a port reset. */
10069 	if (rc) {
10070 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10071 				"3317 HBA not functional: IP Reset Failed "
10072 				"try: echo fw_reset > board_mode\n");
10073 		rc = -ENODEV;
10074 	}
10075 
10076 	return rc;
10077 }
10078 
10079 /**
10080  * lpfc_sli4_pci_mem_setup - Setup SLI4 HBA PCI memory space.
10081  * @phba: pointer to lpfc hba data structure.
10082  *
10083  * This routine is invoked to set up the PCI device memory space for device
10084  * with SLI-4 interface spec.
10085  *
10086  * Return codes
10087  * 	0 - successful
10088  * 	other values - error
10089  **/
10090 static int
lpfc_sli4_pci_mem_setup(struct lpfc_hba * phba)10091 lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba)
10092 {
10093 	struct pci_dev *pdev = phba->pcidev;
10094 	unsigned long bar0map_len, bar1map_len, bar2map_len;
10095 	int error;
10096 	uint32_t if_type;
10097 
10098 	if (!pdev)
10099 		return -ENODEV;
10100 
10101 	/* Set the device DMA mask size */
10102 	error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10103 	if (error)
10104 		error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10105 	if (error)
10106 		return error;
10107 
10108 	/*
10109 	 * The BARs and register set definitions and offset locations are
10110 	 * dependent on the if_type.
10111 	 */
10112 	if (pci_read_config_dword(pdev, LPFC_SLI_INTF,
10113 				  &phba->sli4_hba.sli_intf.word0)) {
10114 		return -ENODEV;
10115 	}
10116 
10117 	/* There is no SLI3 failback for SLI4 devices. */
10118 	if (bf_get(lpfc_sli_intf_valid, &phba->sli4_hba.sli_intf) !=
10119 	    LPFC_SLI_INTF_VALID) {
10120 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10121 				"2894 SLI_INTF reg contents invalid "
10122 				"sli_intf reg 0x%x\n",
10123 				phba->sli4_hba.sli_intf.word0);
10124 		return -ENODEV;
10125 	}
10126 
10127 	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
10128 	/*
10129 	 * Get the bus address of SLI4 device Bar regions and the
10130 	 * number of bytes required by each mapping. The mapping of the
10131 	 * particular PCI BARs regions is dependent on the type of
10132 	 * SLI4 device.
10133 	 */
10134 	if (pci_resource_start(pdev, PCI_64BIT_BAR0)) {
10135 		phba->pci_bar0_map = pci_resource_start(pdev, PCI_64BIT_BAR0);
10136 		bar0map_len = pci_resource_len(pdev, PCI_64BIT_BAR0);
10137 
10138 		/*
10139 		 * Map SLI4 PCI Config Space Register base to a kernel virtual
10140 		 * addr
10141 		 */
10142 		phba->sli4_hba.conf_regs_memmap_p =
10143 			ioremap(phba->pci_bar0_map, bar0map_len);
10144 		if (!phba->sli4_hba.conf_regs_memmap_p) {
10145 			dev_printk(KERN_ERR, &pdev->dev,
10146 				   "ioremap failed for SLI4 PCI config "
10147 				   "registers.\n");
10148 			return -ENODEV;
10149 		}
10150 		phba->pci_bar0_memmap_p = phba->sli4_hba.conf_regs_memmap_p;
10151 		/* Set up BAR0 PCI config space register memory map */
10152 		lpfc_sli4_bar0_register_memmap(phba, if_type);
10153 	} else {
10154 		phba->pci_bar0_map = pci_resource_start(pdev, 1);
10155 		bar0map_len = pci_resource_len(pdev, 1);
10156 		if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
10157 			dev_printk(KERN_ERR, &pdev->dev,
10158 			   "FATAL - No BAR0 mapping for SLI4, if_type 2\n");
10159 			return -ENODEV;
10160 		}
10161 		phba->sli4_hba.conf_regs_memmap_p =
10162 				ioremap(phba->pci_bar0_map, bar0map_len);
10163 		if (!phba->sli4_hba.conf_regs_memmap_p) {
10164 			dev_printk(KERN_ERR, &pdev->dev,
10165 				"ioremap failed for SLI4 PCI config "
10166 				"registers.\n");
10167 			return -ENODEV;
10168 		}
10169 		lpfc_sli4_bar0_register_memmap(phba, if_type);
10170 	}
10171 
10172 	if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
10173 		if (pci_resource_start(pdev, PCI_64BIT_BAR2)) {
10174 			/*
10175 			 * Map SLI4 if type 0 HBA Control Register base to a
10176 			 * kernel virtual address and setup the registers.
10177 			 */
10178 			phba->pci_bar1_map = pci_resource_start(pdev,
10179 								PCI_64BIT_BAR2);
10180 			bar1map_len = pci_resource_len(pdev, PCI_64BIT_BAR2);
10181 			phba->sli4_hba.ctrl_regs_memmap_p =
10182 					ioremap(phba->pci_bar1_map,
10183 						bar1map_len);
10184 			if (!phba->sli4_hba.ctrl_regs_memmap_p) {
10185 				dev_err(&pdev->dev,
10186 					   "ioremap failed for SLI4 HBA "
10187 					    "control registers.\n");
10188 				error = -ENOMEM;
10189 				goto out_iounmap_conf;
10190 			}
10191 			phba->pci_bar2_memmap_p =
10192 					 phba->sli4_hba.ctrl_regs_memmap_p;
10193 			lpfc_sli4_bar1_register_memmap(phba, if_type);
10194 		} else {
10195 			error = -ENOMEM;
10196 			goto out_iounmap_conf;
10197 		}
10198 	}
10199 
10200 	if ((if_type == LPFC_SLI_INTF_IF_TYPE_6) &&
10201 	    (pci_resource_start(pdev, PCI_64BIT_BAR2))) {
10202 		/*
10203 		 * Map SLI4 if type 6 HBA Doorbell Register base to a kernel
10204 		 * virtual address and setup the registers.
10205 		 */
10206 		phba->pci_bar1_map = pci_resource_start(pdev, PCI_64BIT_BAR2);
10207 		bar1map_len = pci_resource_len(pdev, PCI_64BIT_BAR2);
10208 		phba->sli4_hba.drbl_regs_memmap_p =
10209 				ioremap(phba->pci_bar1_map, bar1map_len);
10210 		if (!phba->sli4_hba.drbl_regs_memmap_p) {
10211 			dev_err(&pdev->dev,
10212 			   "ioremap failed for SLI4 HBA doorbell registers.\n");
10213 			error = -ENOMEM;
10214 			goto out_iounmap_conf;
10215 		}
10216 		phba->pci_bar2_memmap_p = phba->sli4_hba.drbl_regs_memmap_p;
10217 		lpfc_sli4_bar1_register_memmap(phba, if_type);
10218 	}
10219 
10220 	if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
10221 		if (pci_resource_start(pdev, PCI_64BIT_BAR4)) {
10222 			/*
10223 			 * Map SLI4 if type 0 HBA Doorbell Register base to
10224 			 * a kernel virtual address and setup the registers.
10225 			 */
10226 			phba->pci_bar2_map = pci_resource_start(pdev,
10227 								PCI_64BIT_BAR4);
10228 			bar2map_len = pci_resource_len(pdev, PCI_64BIT_BAR4);
10229 			phba->sli4_hba.drbl_regs_memmap_p =
10230 					ioremap(phba->pci_bar2_map,
10231 						bar2map_len);
10232 			if (!phba->sli4_hba.drbl_regs_memmap_p) {
10233 				dev_err(&pdev->dev,
10234 					   "ioremap failed for SLI4 HBA"
10235 					   " doorbell registers.\n");
10236 				error = -ENOMEM;
10237 				goto out_iounmap_ctrl;
10238 			}
10239 			phba->pci_bar4_memmap_p =
10240 					phba->sli4_hba.drbl_regs_memmap_p;
10241 			error = lpfc_sli4_bar2_register_memmap(phba, LPFC_VF0);
10242 			if (error)
10243 				goto out_iounmap_all;
10244 		} else {
10245 			error = -ENOMEM;
10246 			goto out_iounmap_all;
10247 		}
10248 	}
10249 
10250 	if (if_type == LPFC_SLI_INTF_IF_TYPE_6 &&
10251 	    pci_resource_start(pdev, PCI_64BIT_BAR4)) {
10252 		/*
10253 		 * Map SLI4 if type 6 HBA DPP Register base to a kernel
10254 		 * virtual address and setup the registers.
10255 		 */
10256 		phba->pci_bar2_map = pci_resource_start(pdev, PCI_64BIT_BAR4);
10257 		bar2map_len = pci_resource_len(pdev, PCI_64BIT_BAR4);
10258 		phba->sli4_hba.dpp_regs_memmap_p =
10259 				ioremap(phba->pci_bar2_map, bar2map_len);
10260 		if (!phba->sli4_hba.dpp_regs_memmap_p) {
10261 			dev_err(&pdev->dev,
10262 			   "ioremap failed for SLI4 HBA dpp registers.\n");
10263 			error = -ENOMEM;
10264 			goto out_iounmap_ctrl;
10265 		}
10266 		phba->pci_bar4_memmap_p = phba->sli4_hba.dpp_regs_memmap_p;
10267 	}
10268 
10269 	/* Set up the EQ/CQ register handeling functions now */
10270 	switch (if_type) {
10271 	case LPFC_SLI_INTF_IF_TYPE_0:
10272 	case LPFC_SLI_INTF_IF_TYPE_2:
10273 		phba->sli4_hba.sli4_eq_clr_intr = lpfc_sli4_eq_clr_intr;
10274 		phba->sli4_hba.sli4_write_eq_db = lpfc_sli4_write_eq_db;
10275 		phba->sli4_hba.sli4_write_cq_db = lpfc_sli4_write_cq_db;
10276 		break;
10277 	case LPFC_SLI_INTF_IF_TYPE_6:
10278 		phba->sli4_hba.sli4_eq_clr_intr = lpfc_sli4_if6_eq_clr_intr;
10279 		phba->sli4_hba.sli4_write_eq_db = lpfc_sli4_if6_write_eq_db;
10280 		phba->sli4_hba.sli4_write_cq_db = lpfc_sli4_if6_write_cq_db;
10281 		break;
10282 	default:
10283 		break;
10284 	}
10285 
10286 	return 0;
10287 
10288 out_iounmap_all:
10289 	iounmap(phba->sli4_hba.drbl_regs_memmap_p);
10290 out_iounmap_ctrl:
10291 	iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
10292 out_iounmap_conf:
10293 	iounmap(phba->sli4_hba.conf_regs_memmap_p);
10294 
10295 	return error;
10296 }
10297 
10298 /**
10299  * lpfc_sli4_pci_mem_unset - Unset SLI4 HBA PCI memory space.
10300  * @phba: pointer to lpfc hba data structure.
10301  *
10302  * This routine is invoked to unset the PCI device memory space for device
10303  * with SLI-4 interface spec.
10304  **/
10305 static void
lpfc_sli4_pci_mem_unset(struct lpfc_hba * phba)10306 lpfc_sli4_pci_mem_unset(struct lpfc_hba *phba)
10307 {
10308 	uint32_t if_type;
10309 	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
10310 
10311 	switch (if_type) {
10312 	case LPFC_SLI_INTF_IF_TYPE_0:
10313 		iounmap(phba->sli4_hba.drbl_regs_memmap_p);
10314 		iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
10315 		iounmap(phba->sli4_hba.conf_regs_memmap_p);
10316 		break;
10317 	case LPFC_SLI_INTF_IF_TYPE_2:
10318 		iounmap(phba->sli4_hba.conf_regs_memmap_p);
10319 		break;
10320 	case LPFC_SLI_INTF_IF_TYPE_6:
10321 		iounmap(phba->sli4_hba.drbl_regs_memmap_p);
10322 		iounmap(phba->sli4_hba.conf_regs_memmap_p);
10323 		break;
10324 	case LPFC_SLI_INTF_IF_TYPE_1:
10325 	default:
10326 		dev_printk(KERN_ERR, &phba->pcidev->dev,
10327 			   "FATAL - unsupported SLI4 interface type - %d\n",
10328 			   if_type);
10329 		break;
10330 	}
10331 }
10332 
10333 /**
10334  * lpfc_sli_enable_msix - Enable MSI-X interrupt mode on SLI-3 device
10335  * @phba: pointer to lpfc hba data structure.
10336  *
10337  * This routine is invoked to enable the MSI-X interrupt vectors to device
10338  * with SLI-3 interface specs.
10339  *
10340  * Return codes
10341  *   0 - successful
10342  *   other values - error
10343  **/
10344 static int
lpfc_sli_enable_msix(struct lpfc_hba * phba)10345 lpfc_sli_enable_msix(struct lpfc_hba *phba)
10346 {
10347 	int rc;
10348 	LPFC_MBOXQ_t *pmb;
10349 
10350 	/* Set up MSI-X multi-message vectors */
10351 	rc = pci_alloc_irq_vectors(phba->pcidev,
10352 			LPFC_MSIX_VECTORS, LPFC_MSIX_VECTORS, PCI_IRQ_MSIX);
10353 	if (rc < 0) {
10354 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10355 				"0420 PCI enable MSI-X failed (%d)\n", rc);
10356 		goto vec_fail_out;
10357 	}
10358 
10359 	/*
10360 	 * Assign MSI-X vectors to interrupt handlers
10361 	 */
10362 
10363 	/* vector-0 is associated to slow-path handler */
10364 	rc = request_irq(pci_irq_vector(phba->pcidev, 0),
10365 			 &lpfc_sli_sp_intr_handler, 0,
10366 			 LPFC_SP_DRIVER_HANDLER_NAME, phba);
10367 	if (rc) {
10368 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
10369 				"0421 MSI-X slow-path request_irq failed "
10370 				"(%d)\n", rc);
10371 		goto msi_fail_out;
10372 	}
10373 
10374 	/* vector-1 is associated to fast-path handler */
10375 	rc = request_irq(pci_irq_vector(phba->pcidev, 1),
10376 			 &lpfc_sli_fp_intr_handler, 0,
10377 			 LPFC_FP_DRIVER_HANDLER_NAME, phba);
10378 
10379 	if (rc) {
10380 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
10381 				"0429 MSI-X fast-path request_irq failed "
10382 				"(%d)\n", rc);
10383 		goto irq_fail_out;
10384 	}
10385 
10386 	/*
10387 	 * Configure HBA MSI-X attention conditions to messages
10388 	 */
10389 	pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
10390 
10391 	if (!pmb) {
10392 		rc = -ENOMEM;
10393 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10394 				"0474 Unable to allocate memory for issuing "
10395 				"MBOX_CONFIG_MSI command\n");
10396 		goto mem_fail_out;
10397 	}
10398 	rc = lpfc_config_msi(phba, pmb);
10399 	if (rc)
10400 		goto mbx_fail_out;
10401 	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
10402 	if (rc != MBX_SUCCESS) {
10403 		lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
10404 				"0351 Config MSI mailbox command failed, "
10405 				"mbxCmd x%x, mbxStatus x%x\n",
10406 				pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus);
10407 		goto mbx_fail_out;
10408 	}
10409 
10410 	/* Free memory allocated for mailbox command */
10411 	mempool_free(pmb, phba->mbox_mem_pool);
10412 	return rc;
10413 
10414 mbx_fail_out:
10415 	/* Free memory allocated for mailbox command */
10416 	mempool_free(pmb, phba->mbox_mem_pool);
10417 
10418 mem_fail_out:
10419 	/* free the irq already requested */
10420 	free_irq(pci_irq_vector(phba->pcidev, 1), phba);
10421 
10422 irq_fail_out:
10423 	/* free the irq already requested */
10424 	free_irq(pci_irq_vector(phba->pcidev, 0), phba);
10425 
10426 msi_fail_out:
10427 	/* Unconfigure MSI-X capability structure */
10428 	pci_free_irq_vectors(phba->pcidev);
10429 
10430 vec_fail_out:
10431 	return rc;
10432 }
10433 
10434 /**
10435  * lpfc_sli_enable_msi - Enable MSI interrupt mode on SLI-3 device.
10436  * @phba: pointer to lpfc hba data structure.
10437  *
10438  * This routine is invoked to enable the MSI interrupt mode to device with
10439  * SLI-3 interface spec. The kernel function pci_enable_msi() is called to
10440  * enable the MSI vector. The device driver is responsible for calling the
10441  * request_irq() to register MSI vector with a interrupt the handler, which
10442  * is done in this function.
10443  *
10444  * Return codes
10445  * 	0 - successful
10446  * 	other values - error
10447  */
10448 static int
lpfc_sli_enable_msi(struct lpfc_hba * phba)10449 lpfc_sli_enable_msi(struct lpfc_hba *phba)
10450 {
10451 	int rc;
10452 
10453 	rc = pci_enable_msi(phba->pcidev);
10454 	if (!rc)
10455 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10456 				"0462 PCI enable MSI mode success.\n");
10457 	else {
10458 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10459 				"0471 PCI enable MSI mode failed (%d)\n", rc);
10460 		return rc;
10461 	}
10462 
10463 	rc = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
10464 			 0, LPFC_DRIVER_NAME, phba);
10465 	if (rc) {
10466 		pci_disable_msi(phba->pcidev);
10467 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
10468 				"0478 MSI request_irq failed (%d)\n", rc);
10469 	}
10470 	return rc;
10471 }
10472 
10473 /**
10474  * lpfc_sli_enable_intr - Enable device interrupt to SLI-3 device.
10475  * @phba: pointer to lpfc hba data structure.
10476  *
10477  * This routine is invoked to enable device interrupt and associate driver's
10478  * interrupt handler(s) to interrupt vector(s) to device with SLI-3 interface
10479  * spec. Depends on the interrupt mode configured to the driver, the driver
10480  * will try to fallback from the configured interrupt mode to an interrupt
10481  * mode which is supported by the platform, kernel, and device in the order
10482  * of:
10483  * MSI-X -> MSI -> IRQ.
10484  *
10485  * Return codes
10486  *   0 - successful
10487  *   other values - error
10488  **/
10489 static uint32_t
lpfc_sli_enable_intr(struct lpfc_hba * phba,uint32_t cfg_mode)10490 lpfc_sli_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
10491 {
10492 	uint32_t intr_mode = LPFC_INTR_ERROR;
10493 	int retval;
10494 
10495 	if (cfg_mode == 2) {
10496 		/* Need to issue conf_port mbox cmd before conf_msi mbox cmd */
10497 		retval = lpfc_sli_config_port(phba, LPFC_SLI_REV3);
10498 		if (!retval) {
10499 			/* Now, try to enable MSI-X interrupt mode */
10500 			retval = lpfc_sli_enable_msix(phba);
10501 			if (!retval) {
10502 				/* Indicate initialization to MSI-X mode */
10503 				phba->intr_type = MSIX;
10504 				intr_mode = 2;
10505 			}
10506 		}
10507 	}
10508 
10509 	/* Fallback to MSI if MSI-X initialization failed */
10510 	if (cfg_mode >= 1 && phba->intr_type == NONE) {
10511 		retval = lpfc_sli_enable_msi(phba);
10512 		if (!retval) {
10513 			/* Indicate initialization to MSI mode */
10514 			phba->intr_type = MSI;
10515 			intr_mode = 1;
10516 		}
10517 	}
10518 
10519 	/* Fallback to INTx if both MSI-X/MSI initalization failed */
10520 	if (phba->intr_type == NONE) {
10521 		retval = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
10522 				     IRQF_SHARED, LPFC_DRIVER_NAME, phba);
10523 		if (!retval) {
10524 			/* Indicate initialization to INTx mode */
10525 			phba->intr_type = INTx;
10526 			intr_mode = 0;
10527 		}
10528 	}
10529 	return intr_mode;
10530 }
10531 
10532 /**
10533  * lpfc_sli_disable_intr - Disable device interrupt to SLI-3 device.
10534  * @phba: pointer to lpfc hba data structure.
10535  *
10536  * This routine is invoked to disable device interrupt and disassociate the
10537  * driver's interrupt handler(s) from interrupt vector(s) to device with
10538  * SLI-3 interface spec. Depending on the interrupt mode, the driver will
10539  * release the interrupt vector(s) for the message signaled interrupt.
10540  **/
10541 static void
lpfc_sli_disable_intr(struct lpfc_hba * phba)10542 lpfc_sli_disable_intr(struct lpfc_hba *phba)
10543 {
10544 	int nr_irqs, i;
10545 
10546 	if (phba->intr_type == MSIX)
10547 		nr_irqs = LPFC_MSIX_VECTORS;
10548 	else
10549 		nr_irqs = 1;
10550 
10551 	for (i = 0; i < nr_irqs; i++)
10552 		free_irq(pci_irq_vector(phba->pcidev, i), phba);
10553 	pci_free_irq_vectors(phba->pcidev);
10554 
10555 	/* Reset interrupt management states */
10556 	phba->intr_type = NONE;
10557 	phba->sli.slistat.sli_intr = 0;
10558 }
10559 
10560 /**
10561  * lpfc_find_cpu_handle - Find the CPU that corresponds to the specified Queue
10562  * @phba: pointer to lpfc hba data structure.
10563  * @id: EQ vector index or Hardware Queue index
10564  * @match: LPFC_FIND_BY_EQ = match by EQ
10565  *         LPFC_FIND_BY_HDWQ = match by Hardware Queue
10566  * Return the CPU that matches the selection criteria
10567  */
10568 static uint16_t
lpfc_find_cpu_handle(struct lpfc_hba * phba,uint16_t id,int match)10569 lpfc_find_cpu_handle(struct lpfc_hba *phba, uint16_t id, int match)
10570 {
10571 	struct lpfc_vector_map_info *cpup;
10572 	int cpu;
10573 
10574 	/* Loop through all CPUs */
10575 	for_each_present_cpu(cpu) {
10576 		cpup = &phba->sli4_hba.cpu_map[cpu];
10577 
10578 		/* If we are matching by EQ, there may be multiple CPUs using
10579 		 * using the same vector, so select the one with
10580 		 * LPFC_CPU_FIRST_IRQ set.
10581 		 */
10582 		if ((match == LPFC_FIND_BY_EQ) &&
10583 		    (cpup->flag & LPFC_CPU_FIRST_IRQ) &&
10584 		    (cpup->irq != LPFC_VECTOR_MAP_EMPTY) &&
10585 		    (cpup->eq == id))
10586 			return cpu;
10587 
10588 		/* If matching by HDWQ, select the first CPU that matches */
10589 		if ((match == LPFC_FIND_BY_HDWQ) && (cpup->hdwq == id))
10590 			return cpu;
10591 	}
10592 	return 0;
10593 }
10594 
10595 #ifdef CONFIG_X86
10596 /**
10597  * lpfc_find_hyper - Determine if the CPU map entry is hyper-threaded
10598  * @phba: pointer to lpfc hba data structure.
10599  * @cpu: CPU map index
10600  * @phys_id: CPU package physical id
10601  * @core_id: CPU core id
10602  */
10603 static int
lpfc_find_hyper(struct lpfc_hba * phba,int cpu,uint16_t phys_id,uint16_t core_id)10604 lpfc_find_hyper(struct lpfc_hba *phba, int cpu,
10605 		uint16_t phys_id, uint16_t core_id)
10606 {
10607 	struct lpfc_vector_map_info *cpup;
10608 	int idx;
10609 
10610 	for_each_present_cpu(idx) {
10611 		cpup = &phba->sli4_hba.cpu_map[idx];
10612 		/* Does the cpup match the one we are looking for */
10613 		if ((cpup->phys_id == phys_id) &&
10614 		    (cpup->core_id == core_id) &&
10615 		    (cpu != idx))
10616 			return 1;
10617 	}
10618 	return 0;
10619 }
10620 #endif
10621 
10622 /**
10623  * lpfc_cpu_affinity_check - Check vector CPU affinity mappings
10624  * @phba: pointer to lpfc hba data structure.
10625  * @vectors: number of msix vectors allocated.
10626  *
10627  * The routine will figure out the CPU affinity assignment for every
10628  * MSI-X vector allocated for the HBA.
10629  * In addition, the CPU to IO channel mapping will be calculated
10630  * and the phba->sli4_hba.cpu_map array will reflect this.
10631  */
10632 static void
lpfc_cpu_affinity_check(struct lpfc_hba * phba,int vectors)10633 lpfc_cpu_affinity_check(struct lpfc_hba *phba, int vectors)
10634 {
10635 	int i, cpu, idx, next_idx, new_cpu, start_cpu, first_cpu;
10636 	int max_phys_id, min_phys_id;
10637 	int max_core_id, min_core_id;
10638 	struct lpfc_vector_map_info *cpup;
10639 	struct lpfc_vector_map_info *new_cpup;
10640 	const struct cpumask *maskp;
10641 #ifdef CONFIG_X86
10642 	struct cpuinfo_x86 *cpuinfo;
10643 #endif
10644 
10645 	/* Init cpu_map array */
10646 	for_each_possible_cpu(cpu) {
10647 		cpup = &phba->sli4_hba.cpu_map[cpu];
10648 		cpup->phys_id = LPFC_VECTOR_MAP_EMPTY;
10649 		cpup->core_id = LPFC_VECTOR_MAP_EMPTY;
10650 		cpup->hdwq = LPFC_VECTOR_MAP_EMPTY;
10651 		cpup->eq = LPFC_VECTOR_MAP_EMPTY;
10652 		cpup->irq = LPFC_VECTOR_MAP_EMPTY;
10653 		cpup->flag = 0;
10654 	}
10655 
10656 	max_phys_id = 0;
10657 	min_phys_id = LPFC_VECTOR_MAP_EMPTY;
10658 	max_core_id = 0;
10659 	min_core_id = LPFC_VECTOR_MAP_EMPTY;
10660 
10661 	/* Update CPU map with physical id and core id of each CPU */
10662 	for_each_present_cpu(cpu) {
10663 		cpup = &phba->sli4_hba.cpu_map[cpu];
10664 #ifdef CONFIG_X86
10665 		cpuinfo = &cpu_data(cpu);
10666 		cpup->phys_id = cpuinfo->phys_proc_id;
10667 		cpup->core_id = cpuinfo->cpu_core_id;
10668 		if (lpfc_find_hyper(phba, cpu, cpup->phys_id, cpup->core_id))
10669 			cpup->flag |= LPFC_CPU_MAP_HYPER;
10670 #else
10671 		/* No distinction between CPUs for other platforms */
10672 		cpup->phys_id = 0;
10673 		cpup->core_id = cpu;
10674 #endif
10675 
10676 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10677 				"3328 CPU %d physid %d coreid %d flag x%x\n",
10678 				cpu, cpup->phys_id, cpup->core_id, cpup->flag);
10679 
10680 		if (cpup->phys_id > max_phys_id)
10681 			max_phys_id = cpup->phys_id;
10682 		if (cpup->phys_id < min_phys_id)
10683 			min_phys_id = cpup->phys_id;
10684 
10685 		if (cpup->core_id > max_core_id)
10686 			max_core_id = cpup->core_id;
10687 		if (cpup->core_id < min_core_id)
10688 			min_core_id = cpup->core_id;
10689 	}
10690 
10691 	for_each_possible_cpu(i) {
10692 		struct lpfc_eq_intr_info *eqi =
10693 			per_cpu_ptr(phba->sli4_hba.eq_info, i);
10694 
10695 		INIT_LIST_HEAD(&eqi->list);
10696 		eqi->icnt = 0;
10697 	}
10698 
10699 	/* This loop sets up all CPUs that are affinitized with a
10700 	 * irq vector assigned to the driver. All affinitized CPUs
10701 	 * will get a link to that vectors IRQ and EQ.
10702 	 *
10703 	 * NULL affinity mask handling:
10704 	 * If irq count is greater than one, log an error message.
10705 	 * If the null mask is received for the first irq, find the
10706 	 * first present cpu, and assign the eq index to ensure at
10707 	 * least one EQ is assigned.
10708 	 */
10709 	for (idx = 0; idx <  phba->cfg_irq_chann; idx++) {
10710 		/* Get a CPU mask for all CPUs affinitized to this vector */
10711 		maskp = pci_irq_get_affinity(phba->pcidev, idx);
10712 		if (!maskp) {
10713 			if (phba->cfg_irq_chann > 1)
10714 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10715 						"3329 No affinity mask found "
10716 						"for vector %d (%d)\n",
10717 						idx, phba->cfg_irq_chann);
10718 			if (!idx) {
10719 				cpu = cpumask_first(cpu_present_mask);
10720 				cpup = &phba->sli4_hba.cpu_map[cpu];
10721 				cpup->eq = idx;
10722 				cpup->irq = pci_irq_vector(phba->pcidev, idx);
10723 				cpup->flag |= LPFC_CPU_FIRST_IRQ;
10724 			}
10725 			break;
10726 		}
10727 
10728 		i = 0;
10729 		/* Loop through all CPUs associated with vector idx */
10730 		for_each_cpu_and(cpu, maskp, cpu_present_mask) {
10731 			/* Set the EQ index and IRQ for that vector */
10732 			cpup = &phba->sli4_hba.cpu_map[cpu];
10733 			cpup->eq = idx;
10734 			cpup->irq = pci_irq_vector(phba->pcidev, idx);
10735 
10736 			/* If this is the first CPU thats assigned to this
10737 			 * vector, set LPFC_CPU_FIRST_IRQ.
10738 			 */
10739 			if (!i)
10740 				cpup->flag |= LPFC_CPU_FIRST_IRQ;
10741 			i++;
10742 
10743 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10744 					"3336 Set Affinity: CPU %d "
10745 					"irq %d eq %d flag x%x\n",
10746 					cpu, cpup->irq, cpup->eq, cpup->flag);
10747 		}
10748 	}
10749 
10750 	/* After looking at each irq vector assigned to this pcidev, its
10751 	 * possible to see that not ALL CPUs have been accounted for.
10752 	 * Next we will set any unassigned (unaffinitized) cpu map
10753 	 * entries to a IRQ on the same phys_id.
10754 	 */
10755 	first_cpu = cpumask_first(cpu_present_mask);
10756 	start_cpu = first_cpu;
10757 
10758 	for_each_present_cpu(cpu) {
10759 		cpup = &phba->sli4_hba.cpu_map[cpu];
10760 
10761 		/* Is this CPU entry unassigned */
10762 		if (cpup->eq == LPFC_VECTOR_MAP_EMPTY) {
10763 			/* Mark CPU as IRQ not assigned by the kernel */
10764 			cpup->flag |= LPFC_CPU_MAP_UNASSIGN;
10765 
10766 			/* If so, find a new_cpup thats on the the SAME
10767 			 * phys_id as cpup. start_cpu will start where we
10768 			 * left off so all unassigned entries don't get assgined
10769 			 * the IRQ of the first entry.
10770 			 */
10771 			new_cpu = start_cpu;
10772 			for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
10773 				new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
10774 				if (!(new_cpup->flag & LPFC_CPU_MAP_UNASSIGN) &&
10775 				    (new_cpup->irq != LPFC_VECTOR_MAP_EMPTY) &&
10776 				    (new_cpup->phys_id == cpup->phys_id))
10777 					goto found_same;
10778 				new_cpu = cpumask_next(
10779 					new_cpu, cpu_present_mask);
10780 				if (new_cpu == nr_cpumask_bits)
10781 					new_cpu = first_cpu;
10782 			}
10783 			/* At this point, we leave the CPU as unassigned */
10784 			continue;
10785 found_same:
10786 			/* We found a matching phys_id, so copy the IRQ info */
10787 			cpup->eq = new_cpup->eq;
10788 			cpup->irq = new_cpup->irq;
10789 
10790 			/* Bump start_cpu to the next slot to minmize the
10791 			 * chance of having multiple unassigned CPU entries
10792 			 * selecting the same IRQ.
10793 			 */
10794 			start_cpu = cpumask_next(new_cpu, cpu_present_mask);
10795 			if (start_cpu == nr_cpumask_bits)
10796 				start_cpu = first_cpu;
10797 
10798 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10799 					"3337 Set Affinity: CPU %d "
10800 					"irq %d from id %d same "
10801 					"phys_id (%d)\n",
10802 					cpu, cpup->irq, new_cpu, cpup->phys_id);
10803 		}
10804 	}
10805 
10806 	/* Set any unassigned cpu map entries to a IRQ on any phys_id */
10807 	start_cpu = first_cpu;
10808 
10809 	for_each_present_cpu(cpu) {
10810 		cpup = &phba->sli4_hba.cpu_map[cpu];
10811 
10812 		/* Is this entry unassigned */
10813 		if (cpup->eq == LPFC_VECTOR_MAP_EMPTY) {
10814 			/* Mark it as IRQ not assigned by the kernel */
10815 			cpup->flag |= LPFC_CPU_MAP_UNASSIGN;
10816 
10817 			/* If so, find a new_cpup thats on ANY phys_id
10818 			 * as the cpup. start_cpu will start where we
10819 			 * left off so all unassigned entries don't get
10820 			 * assigned the IRQ of the first entry.
10821 			 */
10822 			new_cpu = start_cpu;
10823 			for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
10824 				new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
10825 				if (!(new_cpup->flag & LPFC_CPU_MAP_UNASSIGN) &&
10826 				    (new_cpup->irq != LPFC_VECTOR_MAP_EMPTY))
10827 					goto found_any;
10828 				new_cpu = cpumask_next(
10829 					new_cpu, cpu_present_mask);
10830 				if (new_cpu == nr_cpumask_bits)
10831 					new_cpu = first_cpu;
10832 			}
10833 			/* We should never leave an entry unassigned */
10834 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10835 					"3339 Set Affinity: CPU %d "
10836 					"irq %d UNASSIGNED\n",
10837 					cpup->hdwq, cpup->irq);
10838 			continue;
10839 found_any:
10840 			/* We found an available entry, copy the IRQ info */
10841 			cpup->eq = new_cpup->eq;
10842 			cpup->irq = new_cpup->irq;
10843 
10844 			/* Bump start_cpu to the next slot to minmize the
10845 			 * chance of having multiple unassigned CPU entries
10846 			 * selecting the same IRQ.
10847 			 */
10848 			start_cpu = cpumask_next(new_cpu, cpu_present_mask);
10849 			if (start_cpu == nr_cpumask_bits)
10850 				start_cpu = first_cpu;
10851 
10852 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10853 					"3338 Set Affinity: CPU %d "
10854 					"irq %d from id %d (%d/%d)\n",
10855 					cpu, cpup->irq, new_cpu,
10856 					new_cpup->phys_id, new_cpup->core_id);
10857 		}
10858 	}
10859 
10860 	/* Assign hdwq indices that are unique across all cpus in the map
10861 	 * that are also FIRST_CPUs.
10862 	 */
10863 	idx = 0;
10864 	for_each_present_cpu(cpu) {
10865 		cpup = &phba->sli4_hba.cpu_map[cpu];
10866 
10867 		/* Only FIRST IRQs get a hdwq index assignment. */
10868 		if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
10869 			continue;
10870 
10871 		/* 1 to 1, the first LPFC_CPU_FIRST_IRQ cpus to a unique hdwq */
10872 		cpup->hdwq = idx;
10873 		idx++;
10874 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10875 				"3333 Set Affinity: CPU %d (phys %d core %d): "
10876 				"hdwq %d eq %d irq %d flg x%x\n",
10877 				cpu, cpup->phys_id, cpup->core_id,
10878 				cpup->hdwq, cpup->eq, cpup->irq, cpup->flag);
10879 	}
10880 	/* Finally we need to associate a hdwq with each cpu_map entry
10881 	 * This will be 1 to 1 - hdwq to cpu, unless there are less
10882 	 * hardware queues then CPUs. For that case we will just round-robin
10883 	 * the available hardware queues as they get assigned to CPUs.
10884 	 * The next_idx is the idx from the FIRST_CPU loop above to account
10885 	 * for irq_chann < hdwq.  The idx is used for round-robin assignments
10886 	 * and needs to start at 0.
10887 	 */
10888 	next_idx = idx;
10889 	start_cpu = 0;
10890 	idx = 0;
10891 	for_each_present_cpu(cpu) {
10892 		cpup = &phba->sli4_hba.cpu_map[cpu];
10893 
10894 		/* FIRST cpus are already mapped. */
10895 		if (cpup->flag & LPFC_CPU_FIRST_IRQ)
10896 			continue;
10897 
10898 		/* If the cfg_irq_chann < cfg_hdw_queue, set the hdwq
10899 		 * of the unassigned cpus to the next idx so that all
10900 		 * hdw queues are fully utilized.
10901 		 */
10902 		if (next_idx < phba->cfg_hdw_queue) {
10903 			cpup->hdwq = next_idx;
10904 			next_idx++;
10905 			continue;
10906 		}
10907 
10908 		/* Not a First CPU and all hdw_queues are used.  Reuse a
10909 		 * Hardware Queue for another CPU, so be smart about it
10910 		 * and pick one that has its IRQ/EQ mapped to the same phys_id
10911 		 * (CPU package) and core_id.
10912 		 */
10913 		new_cpu = start_cpu;
10914 		for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
10915 			new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
10916 			if (new_cpup->hdwq != LPFC_VECTOR_MAP_EMPTY &&
10917 			    new_cpup->phys_id == cpup->phys_id &&
10918 			    new_cpup->core_id == cpup->core_id) {
10919 				goto found_hdwq;
10920 			}
10921 			new_cpu = cpumask_next(new_cpu, cpu_present_mask);
10922 			if (new_cpu == nr_cpumask_bits)
10923 				new_cpu = first_cpu;
10924 		}
10925 
10926 		/* If we can't match both phys_id and core_id,
10927 		 * settle for just a phys_id match.
10928 		 */
10929 		new_cpu = start_cpu;
10930 		for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
10931 			new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
10932 			if (new_cpup->hdwq != LPFC_VECTOR_MAP_EMPTY &&
10933 			    new_cpup->phys_id == cpup->phys_id)
10934 				goto found_hdwq;
10935 
10936 			new_cpu = cpumask_next(new_cpu, cpu_present_mask);
10937 			if (new_cpu == nr_cpumask_bits)
10938 				new_cpu = first_cpu;
10939 		}
10940 
10941 		/* Otherwise just round robin on cfg_hdw_queue */
10942 		cpup->hdwq = idx % phba->cfg_hdw_queue;
10943 		idx++;
10944 		goto logit;
10945  found_hdwq:
10946 		/* We found an available entry, copy the IRQ info */
10947 		start_cpu = cpumask_next(new_cpu, cpu_present_mask);
10948 		if (start_cpu == nr_cpumask_bits)
10949 			start_cpu = first_cpu;
10950 		cpup->hdwq = new_cpup->hdwq;
10951  logit:
10952 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10953 				"3335 Set Affinity: CPU %d (phys %d core %d): "
10954 				"hdwq %d eq %d irq %d flg x%x\n",
10955 				cpu, cpup->phys_id, cpup->core_id,
10956 				cpup->hdwq, cpup->eq, cpup->irq, cpup->flag);
10957 	}
10958 
10959 	/* The cpu_map array will be used later during initialization
10960 	 * when EQ / CQ / WQs are allocated and configured.
10961 	 */
10962 	return;
10963 }
10964 
10965 /**
10966  * lpfc_sli4_enable_msix - Enable MSI-X interrupt mode to SLI-4 device
10967  * @phba: pointer to lpfc hba data structure.
10968  *
10969  * This routine is invoked to enable the MSI-X interrupt vectors to device
10970  * with SLI-4 interface spec.
10971  *
10972  * Return codes
10973  * 0 - successful
10974  * other values - error
10975  **/
10976 static int
lpfc_sli4_enable_msix(struct lpfc_hba * phba)10977 lpfc_sli4_enable_msix(struct lpfc_hba *phba)
10978 {
10979 	int vectors, rc, index;
10980 	char *name;
10981 
10982 	/* Set up MSI-X multi-message vectors */
10983 	vectors = phba->cfg_irq_chann;
10984 
10985 	rc = pci_alloc_irq_vectors(phba->pcidev,
10986 				1,
10987 				vectors, PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
10988 	if (rc < 0) {
10989 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10990 				"0484 PCI enable MSI-X failed (%d)\n", rc);
10991 		goto vec_fail_out;
10992 	}
10993 	vectors = rc;
10994 
10995 	/* Assign MSI-X vectors to interrupt handlers */
10996 	for (index = 0; index < vectors; index++) {
10997 		name = phba->sli4_hba.hba_eq_hdl[index].handler_name;
10998 		memset(name, 0, LPFC_SLI4_HANDLER_NAME_SZ);
10999 		snprintf(name, LPFC_SLI4_HANDLER_NAME_SZ,
11000 			 LPFC_DRIVER_HANDLER_NAME"%d", index);
11001 
11002 		phba->sli4_hba.hba_eq_hdl[index].idx = index;
11003 		phba->sli4_hba.hba_eq_hdl[index].phba = phba;
11004 		rc = request_irq(pci_irq_vector(phba->pcidev, index),
11005 			 &lpfc_sli4_hba_intr_handler, 0,
11006 			 name,
11007 			 &phba->sli4_hba.hba_eq_hdl[index]);
11008 		if (rc) {
11009 			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
11010 					"0486 MSI-X fast-path (%d) "
11011 					"request_irq failed (%d)\n", index, rc);
11012 			goto cfg_fail_out;
11013 		}
11014 	}
11015 
11016 	if (vectors != phba->cfg_irq_chann) {
11017 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
11018 				"3238 Reducing IO channels to match number of "
11019 				"MSI-X vectors, requested %d got %d\n",
11020 				phba->cfg_irq_chann, vectors);
11021 		if (phba->cfg_irq_chann > vectors)
11022 			phba->cfg_irq_chann = vectors;
11023 		if (phba->nvmet_support && (phba->cfg_nvmet_mrq > vectors))
11024 			phba->cfg_nvmet_mrq = vectors;
11025 	}
11026 
11027 	return rc;
11028 
11029 cfg_fail_out:
11030 	/* free the irq already requested */
11031 	for (--index; index >= 0; index--)
11032 		free_irq(pci_irq_vector(phba->pcidev, index),
11033 				&phba->sli4_hba.hba_eq_hdl[index]);
11034 
11035 	/* Unconfigure MSI-X capability structure */
11036 	pci_free_irq_vectors(phba->pcidev);
11037 
11038 vec_fail_out:
11039 	return rc;
11040 }
11041 
11042 /**
11043  * lpfc_sli4_enable_msi - Enable MSI interrupt mode to SLI-4 device
11044  * @phba: pointer to lpfc hba data structure.
11045  *
11046  * This routine is invoked to enable the MSI interrupt mode to device with
11047  * SLI-4 interface spec. The kernel function pci_alloc_irq_vectors() is
11048  * called to enable the MSI vector. The device driver is responsible for
11049  * calling the request_irq() to register MSI vector with a interrupt the
11050  * handler, which is done in this function.
11051  *
11052  * Return codes
11053  * 	0 - successful
11054  * 	other values - error
11055  **/
11056 static int
lpfc_sli4_enable_msi(struct lpfc_hba * phba)11057 lpfc_sli4_enable_msi(struct lpfc_hba *phba)
11058 {
11059 	int rc, index;
11060 
11061 	rc = pci_alloc_irq_vectors(phba->pcidev, 1, 1,
11062 				   PCI_IRQ_MSI | PCI_IRQ_AFFINITY);
11063 	if (rc > 0)
11064 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11065 				"0487 PCI enable MSI mode success.\n");
11066 	else {
11067 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11068 				"0488 PCI enable MSI mode failed (%d)\n", rc);
11069 		return rc ? rc : -1;
11070 	}
11071 
11072 	rc = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
11073 			 0, LPFC_DRIVER_NAME, phba);
11074 	if (rc) {
11075 		pci_free_irq_vectors(phba->pcidev);
11076 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
11077 				"0490 MSI request_irq failed (%d)\n", rc);
11078 		return rc;
11079 	}
11080 
11081 	for (index = 0; index < phba->cfg_irq_chann; index++) {
11082 		phba->sli4_hba.hba_eq_hdl[index].idx = index;
11083 		phba->sli4_hba.hba_eq_hdl[index].phba = phba;
11084 	}
11085 
11086 	return 0;
11087 }
11088 
11089 /**
11090  * lpfc_sli4_enable_intr - Enable device interrupt to SLI-4 device
11091  * @phba: pointer to lpfc hba data structure.
11092  *
11093  * This routine is invoked to enable device interrupt and associate driver's
11094  * interrupt handler(s) to interrupt vector(s) to device with SLI-4
11095  * interface spec. Depends on the interrupt mode configured to the driver,
11096  * the driver will try to fallback from the configured interrupt mode to an
11097  * interrupt mode which is supported by the platform, kernel, and device in
11098  * the order of:
11099  * MSI-X -> MSI -> IRQ.
11100  *
11101  * Return codes
11102  * 	0 - successful
11103  * 	other values - error
11104  **/
11105 static uint32_t
lpfc_sli4_enable_intr(struct lpfc_hba * phba,uint32_t cfg_mode)11106 lpfc_sli4_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
11107 {
11108 	uint32_t intr_mode = LPFC_INTR_ERROR;
11109 	int retval, idx;
11110 
11111 	if (cfg_mode == 2) {
11112 		/* Preparation before conf_msi mbox cmd */
11113 		retval = 0;
11114 		if (!retval) {
11115 			/* Now, try to enable MSI-X interrupt mode */
11116 			retval = lpfc_sli4_enable_msix(phba);
11117 			if (!retval) {
11118 				/* Indicate initialization to MSI-X mode */
11119 				phba->intr_type = MSIX;
11120 				intr_mode = 2;
11121 			}
11122 		}
11123 	}
11124 
11125 	/* Fallback to MSI if MSI-X initialization failed */
11126 	if (cfg_mode >= 1 && phba->intr_type == NONE) {
11127 		retval = lpfc_sli4_enable_msi(phba);
11128 		if (!retval) {
11129 			/* Indicate initialization to MSI mode */
11130 			phba->intr_type = MSI;
11131 			intr_mode = 1;
11132 		}
11133 	}
11134 
11135 	/* Fallback to INTx if both MSI-X/MSI initalization failed */
11136 	if (phba->intr_type == NONE) {
11137 		retval = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
11138 				     IRQF_SHARED, LPFC_DRIVER_NAME, phba);
11139 		if (!retval) {
11140 			struct lpfc_hba_eq_hdl *eqhdl;
11141 
11142 			/* Indicate initialization to INTx mode */
11143 			phba->intr_type = INTx;
11144 			intr_mode = 0;
11145 
11146 			for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
11147 				eqhdl = &phba->sli4_hba.hba_eq_hdl[idx];
11148 				eqhdl->idx = idx;
11149 				eqhdl->phba = phba;
11150 			}
11151 		}
11152 	}
11153 	return intr_mode;
11154 }
11155 
11156 /**
11157  * lpfc_sli4_disable_intr - Disable device interrupt to SLI-4 device
11158  * @phba: pointer to lpfc hba data structure.
11159  *
11160  * This routine is invoked to disable device interrupt and disassociate
11161  * the driver's interrupt handler(s) from interrupt vector(s) to device
11162  * with SLI-4 interface spec. Depending on the interrupt mode, the driver
11163  * will release the interrupt vector(s) for the message signaled interrupt.
11164  **/
11165 static void
lpfc_sli4_disable_intr(struct lpfc_hba * phba)11166 lpfc_sli4_disable_intr(struct lpfc_hba *phba)
11167 {
11168 	/* Disable the currently initialized interrupt mode */
11169 	if (phba->intr_type == MSIX) {
11170 		int index;
11171 
11172 		/* Free up MSI-X multi-message vectors */
11173 		for (index = 0; index < phba->cfg_irq_chann; index++) {
11174 			irq_set_affinity_hint(
11175 				pci_irq_vector(phba->pcidev, index),
11176 				NULL);
11177 			free_irq(pci_irq_vector(phba->pcidev, index),
11178 					&phba->sli4_hba.hba_eq_hdl[index]);
11179 		}
11180 	} else {
11181 		free_irq(phba->pcidev->irq, phba);
11182 	}
11183 
11184 	pci_free_irq_vectors(phba->pcidev);
11185 
11186 	/* Reset interrupt management states */
11187 	phba->intr_type = NONE;
11188 	phba->sli.slistat.sli_intr = 0;
11189 }
11190 
11191 /**
11192  * lpfc_unset_hba - Unset SLI3 hba device initialization
11193  * @phba: pointer to lpfc hba data structure.
11194  *
11195  * This routine is invoked to unset the HBA device initialization steps to
11196  * a device with SLI-3 interface spec.
11197  **/
11198 static void
lpfc_unset_hba(struct lpfc_hba * phba)11199 lpfc_unset_hba(struct lpfc_hba *phba)
11200 {
11201 	struct lpfc_vport *vport = phba->pport;
11202 	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
11203 
11204 	spin_lock_irq(shost->host_lock);
11205 	vport->load_flag |= FC_UNLOADING;
11206 	spin_unlock_irq(shost->host_lock);
11207 
11208 	kfree(phba->vpi_bmask);
11209 	kfree(phba->vpi_ids);
11210 
11211 	lpfc_stop_hba_timers(phba);
11212 
11213 	phba->pport->work_port_events = 0;
11214 
11215 	lpfc_sli_hba_down(phba);
11216 
11217 	lpfc_sli_brdrestart(phba);
11218 
11219 	lpfc_sli_disable_intr(phba);
11220 
11221 	return;
11222 }
11223 
11224 /**
11225  * lpfc_sli4_xri_exchange_busy_wait - Wait for device XRI exchange busy
11226  * @phba: Pointer to HBA context object.
11227  *
11228  * This function is called in the SLI4 code path to wait for completion
11229  * of device's XRIs exchange busy. It will check the XRI exchange busy
11230  * on outstanding FCP and ELS I/Os every 10ms for up to 10 seconds; after
11231  * that, it will check the XRI exchange busy on outstanding FCP and ELS
11232  * I/Os every 30 seconds, log error message, and wait forever. Only when
11233  * all XRI exchange busy complete, the driver unload shall proceed with
11234  * invoking the function reset ioctl mailbox command to the CNA and the
11235  * the rest of the driver unload resource release.
11236  **/
11237 static void
lpfc_sli4_xri_exchange_busy_wait(struct lpfc_hba * phba)11238 lpfc_sli4_xri_exchange_busy_wait(struct lpfc_hba *phba)
11239 {
11240 	struct lpfc_sli4_hdw_queue *qp;
11241 	int idx, ccnt;
11242 	int wait_time = 0;
11243 	int io_xri_cmpl = 1;
11244 	int nvmet_xri_cmpl = 1;
11245 	int els_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
11246 
11247 	/* Driver just aborted IOs during the hba_unset process.  Pause
11248 	 * here to give the HBA time to complete the IO and get entries
11249 	 * into the abts lists.
11250 	 */
11251 	msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1 * 5);
11252 
11253 	/* Wait for NVME pending IO to flush back to transport. */
11254 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
11255 		lpfc_nvme_wait_for_io_drain(phba);
11256 
11257 	ccnt = 0;
11258 	for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
11259 		qp = &phba->sli4_hba.hdwq[idx];
11260 		io_xri_cmpl = list_empty(&qp->lpfc_abts_io_buf_list);
11261 		if (!io_xri_cmpl) /* if list is NOT empty */
11262 			ccnt++;
11263 	}
11264 	if (ccnt)
11265 		io_xri_cmpl = 0;
11266 
11267 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
11268 		nvmet_xri_cmpl =
11269 			list_empty(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
11270 	}
11271 
11272 	while (!els_xri_cmpl || !io_xri_cmpl || !nvmet_xri_cmpl) {
11273 		if (wait_time > LPFC_XRI_EXCH_BUSY_WAIT_TMO) {
11274 			if (!nvmet_xri_cmpl)
11275 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
11276 						"6424 NVMET XRI exchange busy "
11277 						"wait time: %d seconds.\n",
11278 						wait_time/1000);
11279 			if (!io_xri_cmpl)
11280 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
11281 						"6100 IO XRI exchange busy "
11282 						"wait time: %d seconds.\n",
11283 						wait_time/1000);
11284 			if (!els_xri_cmpl)
11285 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
11286 						"2878 ELS XRI exchange busy "
11287 						"wait time: %d seconds.\n",
11288 						wait_time/1000);
11289 			msleep(LPFC_XRI_EXCH_BUSY_WAIT_T2);
11290 			wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T2;
11291 		} else {
11292 			msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1);
11293 			wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T1;
11294 		}
11295 
11296 		ccnt = 0;
11297 		for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
11298 			qp = &phba->sli4_hba.hdwq[idx];
11299 			io_xri_cmpl = list_empty(
11300 			    &qp->lpfc_abts_io_buf_list);
11301 			if (!io_xri_cmpl) /* if list is NOT empty */
11302 				ccnt++;
11303 		}
11304 		if (ccnt)
11305 			io_xri_cmpl = 0;
11306 
11307 		if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
11308 			nvmet_xri_cmpl = list_empty(
11309 				&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
11310 		}
11311 		els_xri_cmpl =
11312 			list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
11313 
11314 	}
11315 }
11316 
11317 /**
11318  * lpfc_sli4_hba_unset - Unset the fcoe hba
11319  * @phba: Pointer to HBA context object.
11320  *
11321  * This function is called in the SLI4 code path to reset the HBA's FCoE
11322  * function. The caller is not required to hold any lock. This routine
11323  * issues PCI function reset mailbox command to reset the FCoE function.
11324  * At the end of the function, it calls lpfc_hba_down_post function to
11325  * free any pending commands.
11326  **/
11327 static void
lpfc_sli4_hba_unset(struct lpfc_hba * phba)11328 lpfc_sli4_hba_unset(struct lpfc_hba *phba)
11329 {
11330 	int wait_cnt = 0;
11331 	LPFC_MBOXQ_t *mboxq;
11332 	struct pci_dev *pdev = phba->pcidev;
11333 
11334 	lpfc_stop_hba_timers(phba);
11335 	if (phba->pport)
11336 		phba->sli4_hba.intr_enable = 0;
11337 
11338 	/*
11339 	 * Gracefully wait out the potential current outstanding asynchronous
11340 	 * mailbox command.
11341 	 */
11342 
11343 	/* First, block any pending async mailbox command from posted */
11344 	spin_lock_irq(&phba->hbalock);
11345 	phba->sli.sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
11346 	spin_unlock_irq(&phba->hbalock);
11347 	/* Now, trying to wait it out if we can */
11348 	while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
11349 		msleep(10);
11350 		if (++wait_cnt > LPFC_ACTIVE_MBOX_WAIT_CNT)
11351 			break;
11352 	}
11353 	/* Forcefully release the outstanding mailbox command if timed out */
11354 	if (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
11355 		spin_lock_irq(&phba->hbalock);
11356 		mboxq = phba->sli.mbox_active;
11357 		mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;
11358 		__lpfc_mbox_cmpl_put(phba, mboxq);
11359 		phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
11360 		phba->sli.mbox_active = NULL;
11361 		spin_unlock_irq(&phba->hbalock);
11362 	}
11363 
11364 	/* Abort all iocbs associated with the hba */
11365 	lpfc_sli_hba_iocb_abort(phba);
11366 
11367 	/* Wait for completion of device XRI exchange busy */
11368 	lpfc_sli4_xri_exchange_busy_wait(phba);
11369 
11370 	/* Disable PCI subsystem interrupt */
11371 	lpfc_sli4_disable_intr(phba);
11372 
11373 	/* Disable SR-IOV if enabled */
11374 	if (phba->cfg_sriov_nr_virtfn)
11375 		pci_disable_sriov(pdev);
11376 
11377 	/* Stop kthread signal shall trigger work_done one more time */
11378 	kthread_stop(phba->worker_thread);
11379 
11380 	/* Disable FW logging to host memory */
11381 	lpfc_ras_stop_fwlog(phba);
11382 
11383 	/* Unset the queues shared with the hardware then release all
11384 	 * allocated resources.
11385 	 */
11386 	lpfc_sli4_queue_unset(phba);
11387 	lpfc_sli4_queue_destroy(phba);
11388 
11389 	/* Reset SLI4 HBA FCoE function */
11390 	lpfc_pci_function_reset(phba);
11391 
11392 	/* Free RAS DMA memory */
11393 	if (phba->ras_fwlog.ras_enabled)
11394 		lpfc_sli4_ras_dma_free(phba);
11395 
11396 	/* Stop the SLI4 device port */
11397 	if (phba->pport)
11398 		phba->pport->work_port_events = 0;
11399 }
11400 
11401  /**
11402  * lpfc_pc_sli4_params_get - Get the SLI4_PARAMS port capabilities.
11403  * @phba: Pointer to HBA context object.
11404  * @mboxq: Pointer to the mailboxq memory for the mailbox command response.
11405  *
11406  * This function is called in the SLI4 code path to read the port's
11407  * sli4 capabilities.
11408  *
11409  * This function may be be called from any context that can block-wait
11410  * for the completion.  The expectation is that this routine is called
11411  * typically from probe_one or from the online routine.
11412  **/
11413 int
lpfc_pc_sli4_params_get(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)11414 lpfc_pc_sli4_params_get(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
11415 {
11416 	int rc;
11417 	struct lpfc_mqe *mqe;
11418 	struct lpfc_pc_sli4_params *sli4_params;
11419 	uint32_t mbox_tmo;
11420 
11421 	rc = 0;
11422 	mqe = &mboxq->u.mqe;
11423 
11424 	/* Read the port's SLI4 Parameters port capabilities */
11425 	lpfc_pc_sli4_params(mboxq);
11426 	if (!phba->sli4_hba.intr_enable)
11427 		rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
11428 	else {
11429 		mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq);
11430 		rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
11431 	}
11432 
11433 	if (unlikely(rc))
11434 		return 1;
11435 
11436 	sli4_params = &phba->sli4_hba.pc_sli4_params;
11437 	sli4_params->if_type = bf_get(if_type, &mqe->un.sli4_params);
11438 	sli4_params->sli_rev = bf_get(sli_rev, &mqe->un.sli4_params);
11439 	sli4_params->sli_family = bf_get(sli_family, &mqe->un.sli4_params);
11440 	sli4_params->featurelevel_1 = bf_get(featurelevel_1,
11441 					     &mqe->un.sli4_params);
11442 	sli4_params->featurelevel_2 = bf_get(featurelevel_2,
11443 					     &mqe->un.sli4_params);
11444 	sli4_params->proto_types = mqe->un.sli4_params.word3;
11445 	sli4_params->sge_supp_len = mqe->un.sli4_params.sge_supp_len;
11446 	sli4_params->if_page_sz = bf_get(if_page_sz, &mqe->un.sli4_params);
11447 	sli4_params->rq_db_window = bf_get(rq_db_window, &mqe->un.sli4_params);
11448 	sli4_params->loopbk_scope = bf_get(loopbk_scope, &mqe->un.sli4_params);
11449 	sli4_params->eq_pages_max = bf_get(eq_pages, &mqe->un.sli4_params);
11450 	sli4_params->eqe_size = bf_get(eqe_size, &mqe->un.sli4_params);
11451 	sli4_params->cq_pages_max = bf_get(cq_pages, &mqe->un.sli4_params);
11452 	sli4_params->cqe_size = bf_get(cqe_size, &mqe->un.sli4_params);
11453 	sli4_params->mq_pages_max = bf_get(mq_pages, &mqe->un.sli4_params);
11454 	sli4_params->mqe_size = bf_get(mqe_size, &mqe->un.sli4_params);
11455 	sli4_params->mq_elem_cnt = bf_get(mq_elem_cnt, &mqe->un.sli4_params);
11456 	sli4_params->wq_pages_max = bf_get(wq_pages, &mqe->un.sli4_params);
11457 	sli4_params->wqe_size = bf_get(wqe_size, &mqe->un.sli4_params);
11458 	sli4_params->rq_pages_max = bf_get(rq_pages, &mqe->un.sli4_params);
11459 	sli4_params->rqe_size = bf_get(rqe_size, &mqe->un.sli4_params);
11460 	sli4_params->hdr_pages_max = bf_get(hdr_pages, &mqe->un.sli4_params);
11461 	sli4_params->hdr_size = bf_get(hdr_size, &mqe->un.sli4_params);
11462 	sli4_params->hdr_pp_align = bf_get(hdr_pp_align, &mqe->un.sli4_params);
11463 	sli4_params->sgl_pages_max = bf_get(sgl_pages, &mqe->un.sli4_params);
11464 	sli4_params->sgl_pp_align = bf_get(sgl_pp_align, &mqe->un.sli4_params);
11465 
11466 	/* Make sure that sge_supp_len can be handled by the driver */
11467 	if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)
11468 		sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;
11469 
11470 	return rc;
11471 }
11472 
11473 /**
11474  * lpfc_get_sli4_parameters - Get the SLI4 Config PARAMETERS.
11475  * @phba: Pointer to HBA context object.
11476  * @mboxq: Pointer to the mailboxq memory for the mailbox command response.
11477  *
11478  * This function is called in the SLI4 code path to read the port's
11479  * sli4 capabilities.
11480  *
11481  * This function may be be called from any context that can block-wait
11482  * for the completion.  The expectation is that this routine is called
11483  * typically from probe_one or from the online routine.
11484  **/
11485 int
lpfc_get_sli4_parameters(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)11486 lpfc_get_sli4_parameters(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
11487 {
11488 	int rc;
11489 	struct lpfc_mqe *mqe = &mboxq->u.mqe;
11490 	struct lpfc_pc_sli4_params *sli4_params;
11491 	uint32_t mbox_tmo;
11492 	int length;
11493 	bool exp_wqcq_pages = true;
11494 	struct lpfc_sli4_parameters *mbx_sli4_parameters;
11495 
11496 	/*
11497 	 * By default, the driver assumes the SLI4 port requires RPI
11498 	 * header postings.  The SLI4_PARAM response will correct this
11499 	 * assumption.
11500 	 */
11501 	phba->sli4_hba.rpi_hdrs_in_use = 1;
11502 
11503 	/* Read the port's SLI4 Config Parameters */
11504 	length = (sizeof(struct lpfc_mbx_get_sli4_parameters) -
11505 		  sizeof(struct lpfc_sli4_cfg_mhdr));
11506 	lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
11507 			 LPFC_MBOX_OPCODE_GET_SLI4_PARAMETERS,
11508 			 length, LPFC_SLI4_MBX_EMBED);
11509 	if (!phba->sli4_hba.intr_enable)
11510 		rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
11511 	else {
11512 		mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq);
11513 		rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
11514 	}
11515 	if (unlikely(rc))
11516 		return rc;
11517 	sli4_params = &phba->sli4_hba.pc_sli4_params;
11518 	mbx_sli4_parameters = &mqe->un.get_sli4_parameters.sli4_parameters;
11519 	sli4_params->if_type = bf_get(cfg_if_type, mbx_sli4_parameters);
11520 	sli4_params->sli_rev = bf_get(cfg_sli_rev, mbx_sli4_parameters);
11521 	sli4_params->sli_family = bf_get(cfg_sli_family, mbx_sli4_parameters);
11522 	sli4_params->featurelevel_1 = bf_get(cfg_sli_hint_1,
11523 					     mbx_sli4_parameters);
11524 	sli4_params->featurelevel_2 = bf_get(cfg_sli_hint_2,
11525 					     mbx_sli4_parameters);
11526 	if (bf_get(cfg_phwq, mbx_sli4_parameters))
11527 		phba->sli3_options |= LPFC_SLI4_PHWQ_ENABLED;
11528 	else
11529 		phba->sli3_options &= ~LPFC_SLI4_PHWQ_ENABLED;
11530 	sli4_params->sge_supp_len = mbx_sli4_parameters->sge_supp_len;
11531 	sli4_params->loopbk_scope = bf_get(loopbk_scope, mbx_sli4_parameters);
11532 	sli4_params->oas_supported = bf_get(cfg_oas, mbx_sli4_parameters);
11533 	sli4_params->cqv = bf_get(cfg_cqv, mbx_sli4_parameters);
11534 	sli4_params->mqv = bf_get(cfg_mqv, mbx_sli4_parameters);
11535 	sli4_params->wqv = bf_get(cfg_wqv, mbx_sli4_parameters);
11536 	sli4_params->rqv = bf_get(cfg_rqv, mbx_sli4_parameters);
11537 	sli4_params->eqav = bf_get(cfg_eqav, mbx_sli4_parameters);
11538 	sli4_params->cqav = bf_get(cfg_cqav, mbx_sli4_parameters);
11539 	sli4_params->wqsize = bf_get(cfg_wqsize, mbx_sli4_parameters);
11540 	sli4_params->bv1s = bf_get(cfg_bv1s, mbx_sli4_parameters);
11541 	sli4_params->sgl_pages_max = bf_get(cfg_sgl_page_cnt,
11542 					    mbx_sli4_parameters);
11543 	sli4_params->wqpcnt = bf_get(cfg_wqpcnt, mbx_sli4_parameters);
11544 	sli4_params->sgl_pp_align = bf_get(cfg_sgl_pp_align,
11545 					   mbx_sli4_parameters);
11546 	phba->sli4_hba.extents_in_use = bf_get(cfg_ext, mbx_sli4_parameters);
11547 	phba->sli4_hba.rpi_hdrs_in_use = bf_get(cfg_hdrr, mbx_sli4_parameters);
11548 
11549 	/* Check for Extended Pre-Registered SGL support */
11550 	phba->cfg_xpsgl = bf_get(cfg_xpsgl, mbx_sli4_parameters);
11551 
11552 	/* Check for firmware nvme support */
11553 	rc = (bf_get(cfg_nvme, mbx_sli4_parameters) &&
11554 		     bf_get(cfg_xib, mbx_sli4_parameters));
11555 
11556 	if (rc) {
11557 		/* Save this to indicate the Firmware supports NVME */
11558 		sli4_params->nvme = 1;
11559 
11560 		/* Firmware NVME support, check driver FC4 NVME support */
11561 		if (phba->cfg_enable_fc4_type == LPFC_ENABLE_FCP) {
11562 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME,
11563 					"6133 Disabling NVME support: "
11564 					"FC4 type not supported: x%x\n",
11565 					phba->cfg_enable_fc4_type);
11566 			goto fcponly;
11567 		}
11568 	} else {
11569 		/* No firmware NVME support, check driver FC4 NVME support */
11570 		sli4_params->nvme = 0;
11571 		if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
11572 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_NVME,
11573 					"6101 Disabling NVME support: Not "
11574 					"supported by firmware (%d %d) x%x\n",
11575 					bf_get(cfg_nvme, mbx_sli4_parameters),
11576 					bf_get(cfg_xib, mbx_sli4_parameters),
11577 					phba->cfg_enable_fc4_type);
11578 fcponly:
11579 			phba->nvme_support = 0;
11580 			phba->nvmet_support = 0;
11581 			phba->cfg_nvmet_mrq = 0;
11582 			phba->cfg_nvme_seg_cnt = 0;
11583 
11584 			/* If no FC4 type support, move to just SCSI support */
11585 			if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
11586 				return -ENODEV;
11587 			phba->cfg_enable_fc4_type = LPFC_ENABLE_FCP;
11588 		}
11589 	}
11590 
11591 	/* If the NVME FC4 type is enabled, scale the sg_seg_cnt to
11592 	 * accommodate 512K and 1M IOs in a single nvme buf and supply
11593 	 * enough NVME LS iocb buffers for larger connectivity counts.
11594 	 */
11595 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
11596 		phba->cfg_sg_seg_cnt = LPFC_MAX_NVME_SEG_CNT;
11597 		phba->cfg_iocb_cnt = 5;
11598 	}
11599 
11600 	/* Only embed PBDE for if_type 6, PBDE support requires xib be set */
11601 	if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
11602 	    LPFC_SLI_INTF_IF_TYPE_6) || (!bf_get(cfg_xib, mbx_sli4_parameters)))
11603 		phba->cfg_enable_pbde = 0;
11604 
11605 	/*
11606 	 * To support Suppress Response feature we must satisfy 3 conditions.
11607 	 * lpfc_suppress_rsp module parameter must be set (default).
11608 	 * In SLI4-Parameters Descriptor:
11609 	 * Extended Inline Buffers (XIB) must be supported.
11610 	 * Suppress Response IU Not Supported (SRIUNS) must NOT be supported
11611 	 * (double negative).
11612 	 */
11613 	if (phba->cfg_suppress_rsp && bf_get(cfg_xib, mbx_sli4_parameters) &&
11614 	    !(bf_get(cfg_nosr, mbx_sli4_parameters)))
11615 		phba->sli.sli_flag |= LPFC_SLI_SUPPRESS_RSP;
11616 	else
11617 		phba->cfg_suppress_rsp = 0;
11618 
11619 	if (bf_get(cfg_eqdr, mbx_sli4_parameters))
11620 		phba->sli.sli_flag |= LPFC_SLI_USE_EQDR;
11621 
11622 	/* Make sure that sge_supp_len can be handled by the driver */
11623 	if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)
11624 		sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;
11625 
11626 	/*
11627 	 * Check whether the adapter supports an embedded copy of the
11628 	 * FCP CMD IU within the WQE for FCP_Ixxx commands. In order
11629 	 * to use this option, 128-byte WQEs must be used.
11630 	 */
11631 	if (bf_get(cfg_ext_embed_cb, mbx_sli4_parameters))
11632 		phba->fcp_embed_io = 1;
11633 	else
11634 		phba->fcp_embed_io = 0;
11635 
11636 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME,
11637 			"6422 XIB %d PBDE %d: FCP %d NVME %d %d %d\n",
11638 			bf_get(cfg_xib, mbx_sli4_parameters),
11639 			phba->cfg_enable_pbde,
11640 			phba->fcp_embed_io, phba->nvme_support,
11641 			phba->cfg_nvme_embed_cmd, phba->cfg_suppress_rsp);
11642 
11643 	if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
11644 	    LPFC_SLI_INTF_IF_TYPE_2) &&
11645 	    (bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf) ==
11646 		 LPFC_SLI_INTF_FAMILY_LNCR_A0))
11647 		exp_wqcq_pages = false;
11648 
11649 	if ((bf_get(cfg_cqpsize, mbx_sli4_parameters) & LPFC_CQ_16K_PAGE_SZ) &&
11650 	    (bf_get(cfg_wqpsize, mbx_sli4_parameters) & LPFC_WQ_16K_PAGE_SZ) &&
11651 	    exp_wqcq_pages &&
11652 	    (sli4_params->wqsize & LPFC_WQ_SZ128_SUPPORT))
11653 		phba->enab_exp_wqcq_pages = 1;
11654 	else
11655 		phba->enab_exp_wqcq_pages = 0;
11656 	/*
11657 	 * Check if the SLI port supports MDS Diagnostics
11658 	 */
11659 	if (bf_get(cfg_mds_diags, mbx_sli4_parameters))
11660 		phba->mds_diags_support = 1;
11661 	else
11662 		phba->mds_diags_support = 0;
11663 
11664 	/*
11665 	 * Check if the SLI port supports NSLER
11666 	 */
11667 	if (bf_get(cfg_nsler, mbx_sli4_parameters))
11668 		phba->nsler = 1;
11669 	else
11670 		phba->nsler = 0;
11671 
11672 	return 0;
11673 }
11674 
11675 /**
11676  * lpfc_pci_probe_one_s3 - PCI probe func to reg SLI-3 device to PCI subsystem.
11677  * @pdev: pointer to PCI device
11678  * @pid: pointer to PCI device identifier
11679  *
11680  * This routine is to be called to attach a device with SLI-3 interface spec
11681  * to the PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
11682  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
11683  * information of the device and driver to see if the driver state that it can
11684  * support this kind of device. If the match is successful, the driver core
11685  * invokes this routine. If this routine determines it can claim the HBA, it
11686  * does all the initialization that it needs to do to handle the HBA properly.
11687  *
11688  * Return code
11689  * 	0 - driver can claim the device
11690  * 	negative value - driver can not claim the device
11691  **/
11692 static int
lpfc_pci_probe_one_s3(struct pci_dev * pdev,const struct pci_device_id * pid)11693 lpfc_pci_probe_one_s3(struct pci_dev *pdev, const struct pci_device_id *pid)
11694 {
11695 	struct lpfc_hba   *phba;
11696 	struct lpfc_vport *vport = NULL;
11697 	struct Scsi_Host  *shost = NULL;
11698 	int error;
11699 	uint32_t cfg_mode, intr_mode;
11700 
11701 	/* Allocate memory for HBA structure */
11702 	phba = lpfc_hba_alloc(pdev);
11703 	if (!phba)
11704 		return -ENOMEM;
11705 
11706 	/* Perform generic PCI device enabling operation */
11707 	error = lpfc_enable_pci_dev(phba);
11708 	if (error)
11709 		goto out_free_phba;
11710 
11711 	/* Set up SLI API function jump table for PCI-device group-0 HBAs */
11712 	error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_LP);
11713 	if (error)
11714 		goto out_disable_pci_dev;
11715 
11716 	/* Set up SLI-3 specific device PCI memory space */
11717 	error = lpfc_sli_pci_mem_setup(phba);
11718 	if (error) {
11719 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
11720 				"1402 Failed to set up pci memory space.\n");
11721 		goto out_disable_pci_dev;
11722 	}
11723 
11724 	/* Set up SLI-3 specific device driver resources */
11725 	error = lpfc_sli_driver_resource_setup(phba);
11726 	if (error) {
11727 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
11728 				"1404 Failed to set up driver resource.\n");
11729 		goto out_unset_pci_mem_s3;
11730 	}
11731 
11732 	/* Initialize and populate the iocb list per host */
11733 
11734 	error = lpfc_init_iocb_list(phba, LPFC_IOCB_LIST_CNT);
11735 	if (error) {
11736 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
11737 				"1405 Failed to initialize iocb list.\n");
11738 		goto out_unset_driver_resource_s3;
11739 	}
11740 
11741 	/* Set up common device driver resources */
11742 	error = lpfc_setup_driver_resource_phase2(phba);
11743 	if (error) {
11744 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
11745 				"1406 Failed to set up driver resource.\n");
11746 		goto out_free_iocb_list;
11747 	}
11748 
11749 	/* Get the default values for Model Name and Description */
11750 	lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
11751 
11752 	/* Create SCSI host to the physical port */
11753 	error = lpfc_create_shost(phba);
11754 	if (error) {
11755 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
11756 				"1407 Failed to create scsi host.\n");
11757 		goto out_unset_driver_resource;
11758 	}
11759 
11760 	/* Configure sysfs attributes */
11761 	vport = phba->pport;
11762 	error = lpfc_alloc_sysfs_attr(vport);
11763 	if (error) {
11764 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
11765 				"1476 Failed to allocate sysfs attr\n");
11766 		goto out_destroy_shost;
11767 	}
11768 
11769 	shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
11770 	/* Now, trying to enable interrupt and bring up the device */
11771 	cfg_mode = phba->cfg_use_msi;
11772 	while (true) {
11773 		/* Put device to a known state before enabling interrupt */
11774 		lpfc_stop_port(phba);
11775 		/* Configure and enable interrupt */
11776 		intr_mode = lpfc_sli_enable_intr(phba, cfg_mode);
11777 		if (intr_mode == LPFC_INTR_ERROR) {
11778 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
11779 					"0431 Failed to enable interrupt.\n");
11780 			error = -ENODEV;
11781 			goto out_free_sysfs_attr;
11782 		}
11783 		/* SLI-3 HBA setup */
11784 		if (lpfc_sli_hba_setup(phba)) {
11785 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
11786 					"1477 Failed to set up hba\n");
11787 			error = -ENODEV;
11788 			goto out_remove_device;
11789 		}
11790 
11791 		/* Wait 50ms for the interrupts of previous mailbox commands */
11792 		msleep(50);
11793 		/* Check active interrupts on message signaled interrupts */
11794 		if (intr_mode == 0 ||
11795 		    phba->sli.slistat.sli_intr > LPFC_MSIX_VECTORS) {
11796 			/* Log the current active interrupt mode */
11797 			phba->intr_mode = intr_mode;
11798 			lpfc_log_intr_mode(phba, intr_mode);
11799 			break;
11800 		} else {
11801 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11802 					"0447 Configure interrupt mode (%d) "
11803 					"failed active interrupt test.\n",
11804 					intr_mode);
11805 			/* Disable the current interrupt mode */
11806 			lpfc_sli_disable_intr(phba);
11807 			/* Try next level of interrupt mode */
11808 			cfg_mode = --intr_mode;
11809 		}
11810 	}
11811 
11812 	/* Perform post initialization setup */
11813 	lpfc_post_init_setup(phba);
11814 
11815 	/* Check if there are static vports to be created. */
11816 	lpfc_create_static_vport(phba);
11817 
11818 	return 0;
11819 
11820 out_remove_device:
11821 	lpfc_unset_hba(phba);
11822 out_free_sysfs_attr:
11823 	lpfc_free_sysfs_attr(vport);
11824 out_destroy_shost:
11825 	lpfc_destroy_shost(phba);
11826 out_unset_driver_resource:
11827 	lpfc_unset_driver_resource_phase2(phba);
11828 out_free_iocb_list:
11829 	lpfc_free_iocb_list(phba);
11830 out_unset_driver_resource_s3:
11831 	lpfc_sli_driver_resource_unset(phba);
11832 out_unset_pci_mem_s3:
11833 	lpfc_sli_pci_mem_unset(phba);
11834 out_disable_pci_dev:
11835 	lpfc_disable_pci_dev(phba);
11836 	if (shost)
11837 		scsi_host_put(shost);
11838 out_free_phba:
11839 	lpfc_hba_free(phba);
11840 	return error;
11841 }
11842 
11843 /**
11844  * lpfc_pci_remove_one_s3 - PCI func to unreg SLI-3 device from PCI subsystem.
11845  * @pdev: pointer to PCI device
11846  *
11847  * This routine is to be called to disattach a device with SLI-3 interface
11848  * spec from PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
11849  * removed from PCI bus, it performs all the necessary cleanup for the HBA
11850  * device to be removed from the PCI subsystem properly.
11851  **/
11852 static void
lpfc_pci_remove_one_s3(struct pci_dev * pdev)11853 lpfc_pci_remove_one_s3(struct pci_dev *pdev)
11854 {
11855 	struct Scsi_Host  *shost = pci_get_drvdata(pdev);
11856 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
11857 	struct lpfc_vport **vports;
11858 	struct lpfc_hba   *phba = vport->phba;
11859 	int i;
11860 
11861 	spin_lock_irq(&phba->hbalock);
11862 	vport->load_flag |= FC_UNLOADING;
11863 	spin_unlock_irq(&phba->hbalock);
11864 
11865 	lpfc_free_sysfs_attr(vport);
11866 
11867 	/* Release all the vports against this physical port */
11868 	vports = lpfc_create_vport_work_array(phba);
11869 	if (vports != NULL)
11870 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
11871 			if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
11872 				continue;
11873 			fc_vport_terminate(vports[i]->fc_vport);
11874 		}
11875 	lpfc_destroy_vport_work_array(phba, vports);
11876 
11877 	/* Remove FC host and then SCSI host with the physical port */
11878 	fc_remove_host(shost);
11879 	scsi_remove_host(shost);
11880 
11881 	lpfc_cleanup(vport);
11882 
11883 	/*
11884 	 * Bring down the SLI Layer. This step disable all interrupts,
11885 	 * clears the rings, discards all mailbox commands, and resets
11886 	 * the HBA.
11887 	 */
11888 
11889 	/* HBA interrupt will be disabled after this call */
11890 	lpfc_sli_hba_down(phba);
11891 	/* Stop kthread signal shall trigger work_done one more time */
11892 	kthread_stop(phba->worker_thread);
11893 	/* Final cleanup of txcmplq and reset the HBA */
11894 	lpfc_sli_brdrestart(phba);
11895 
11896 	kfree(phba->vpi_bmask);
11897 	kfree(phba->vpi_ids);
11898 
11899 	lpfc_stop_hba_timers(phba);
11900 	spin_lock_irq(&phba->port_list_lock);
11901 	list_del_init(&vport->listentry);
11902 	spin_unlock_irq(&phba->port_list_lock);
11903 
11904 	lpfc_debugfs_terminate(vport);
11905 
11906 	/* Disable SR-IOV if enabled */
11907 	if (phba->cfg_sriov_nr_virtfn)
11908 		pci_disable_sriov(pdev);
11909 
11910 	/* Disable interrupt */
11911 	lpfc_sli_disable_intr(phba);
11912 
11913 	scsi_host_put(shost);
11914 
11915 	/*
11916 	 * Call scsi_free before mem_free since scsi bufs are released to their
11917 	 * corresponding pools here.
11918 	 */
11919 	lpfc_scsi_free(phba);
11920 	lpfc_free_iocb_list(phba);
11921 
11922 	lpfc_mem_free_all(phba);
11923 
11924 	dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
11925 			  phba->hbqslimp.virt, phba->hbqslimp.phys);
11926 
11927 	/* Free resources associated with SLI2 interface */
11928 	dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
11929 			  phba->slim2p.virt, phba->slim2p.phys);
11930 
11931 	/* unmap adapter SLIM and Control Registers */
11932 	iounmap(phba->ctrl_regs_memmap_p);
11933 	iounmap(phba->slim_memmap_p);
11934 
11935 	lpfc_hba_free(phba);
11936 
11937 	pci_release_mem_regions(pdev);
11938 	pci_disable_device(pdev);
11939 }
11940 
11941 /**
11942  * lpfc_pci_suspend_one_s3 - PCI func to suspend SLI-3 device for power mgmnt
11943  * @pdev: pointer to PCI device
11944  * @msg: power management message
11945  *
11946  * This routine is to be called from the kernel's PCI subsystem to support
11947  * system Power Management (PM) to device with SLI-3 interface spec. When
11948  * PM invokes this method, it quiesces the device by stopping the driver's
11949  * worker thread for the device, turning off device's interrupt and DMA,
11950  * and bring the device offline. Note that as the driver implements the
11951  * minimum PM requirements to a power-aware driver's PM support for the
11952  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
11953  * to the suspend() method call will be treated as SUSPEND and the driver will
11954  * fully reinitialize its device during resume() method call, the driver will
11955  * set device to PCI_D3hot state in PCI config space instead of setting it
11956  * according to the @msg provided by the PM.
11957  *
11958  * Return code
11959  * 	0 - driver suspended the device
11960  * 	Error otherwise
11961  **/
11962 static int
lpfc_pci_suspend_one_s3(struct pci_dev * pdev,pm_message_t msg)11963 lpfc_pci_suspend_one_s3(struct pci_dev *pdev, pm_message_t msg)
11964 {
11965 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
11966 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
11967 
11968 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11969 			"0473 PCI device Power Management suspend.\n");
11970 
11971 	/* Bring down the device */
11972 	lpfc_offline_prep(phba, LPFC_MBX_WAIT);
11973 	lpfc_offline(phba);
11974 	kthread_stop(phba->worker_thread);
11975 
11976 	/* Disable interrupt from device */
11977 	lpfc_sli_disable_intr(phba);
11978 
11979 	/* Save device state to PCI config space */
11980 	pci_save_state(pdev);
11981 	pci_set_power_state(pdev, PCI_D3hot);
11982 
11983 	return 0;
11984 }
11985 
11986 /**
11987  * lpfc_pci_resume_one_s3 - PCI func to resume SLI-3 device for power mgmnt
11988  * @pdev: pointer to PCI device
11989  *
11990  * This routine is to be called from the kernel's PCI subsystem to support
11991  * system Power Management (PM) to device with SLI-3 interface spec. When PM
11992  * invokes this method, it restores the device's PCI config space state and
11993  * fully reinitializes the device and brings it online. Note that as the
11994  * driver implements the minimum PM requirements to a power-aware driver's
11995  * PM for suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE,
11996  * FREEZE) to the suspend() method call will be treated as SUSPEND and the
11997  * driver will fully reinitialize its device during resume() method call,
11998  * the device will be set to PCI_D0 directly in PCI config space before
11999  * restoring the state.
12000  *
12001  * Return code
12002  * 	0 - driver suspended the device
12003  * 	Error otherwise
12004  **/
12005 static int
lpfc_pci_resume_one_s3(struct pci_dev * pdev)12006 lpfc_pci_resume_one_s3(struct pci_dev *pdev)
12007 {
12008 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
12009 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12010 	uint32_t intr_mode;
12011 	int error;
12012 
12013 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12014 			"0452 PCI device Power Management resume.\n");
12015 
12016 	/* Restore device state from PCI config space */
12017 	pci_set_power_state(pdev, PCI_D0);
12018 	pci_restore_state(pdev);
12019 
12020 	/*
12021 	 * As the new kernel behavior of pci_restore_state() API call clears
12022 	 * device saved_state flag, need to save the restored state again.
12023 	 */
12024 	pci_save_state(pdev);
12025 
12026 	if (pdev->is_busmaster)
12027 		pci_set_master(pdev);
12028 
12029 	/* Startup the kernel thread for this host adapter. */
12030 	phba->worker_thread = kthread_run(lpfc_do_work, phba,
12031 					"lpfc_worker_%d", phba->brd_no);
12032 	if (IS_ERR(phba->worker_thread)) {
12033 		error = PTR_ERR(phba->worker_thread);
12034 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12035 				"0434 PM resume failed to start worker "
12036 				"thread: error=x%x.\n", error);
12037 		return error;
12038 	}
12039 
12040 	/* Configure and enable interrupt */
12041 	intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
12042 	if (intr_mode == LPFC_INTR_ERROR) {
12043 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12044 				"0430 PM resume Failed to enable interrupt\n");
12045 		return -EIO;
12046 	} else
12047 		phba->intr_mode = intr_mode;
12048 
12049 	/* Restart HBA and bring it online */
12050 	lpfc_sli_brdrestart(phba);
12051 	lpfc_online(phba);
12052 
12053 	/* Log the current active interrupt mode */
12054 	lpfc_log_intr_mode(phba, phba->intr_mode);
12055 
12056 	return 0;
12057 }
12058 
12059 /**
12060  * lpfc_sli_prep_dev_for_recover - Prepare SLI3 device for pci slot recover
12061  * @phba: pointer to lpfc hba data structure.
12062  *
12063  * This routine is called to prepare the SLI3 device for PCI slot recover. It
12064  * aborts all the outstanding SCSI I/Os to the pci device.
12065  **/
12066 static void
lpfc_sli_prep_dev_for_recover(struct lpfc_hba * phba)12067 lpfc_sli_prep_dev_for_recover(struct lpfc_hba *phba)
12068 {
12069 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12070 			"2723 PCI channel I/O abort preparing for recovery\n");
12071 
12072 	/*
12073 	 * There may be errored I/Os through HBA, abort all I/Os on txcmplq
12074 	 * and let the SCSI mid-layer to retry them to recover.
12075 	 */
12076 	lpfc_sli_abort_fcp_rings(phba);
12077 }
12078 
12079 /**
12080  * lpfc_sli_prep_dev_for_reset - Prepare SLI3 device for pci slot reset
12081  * @phba: pointer to lpfc hba data structure.
12082  *
12083  * This routine is called to prepare the SLI3 device for PCI slot reset. It
12084  * disables the device interrupt and pci device, and aborts the internal FCP
12085  * pending I/Os.
12086  **/
12087 static void
lpfc_sli_prep_dev_for_reset(struct lpfc_hba * phba)12088 lpfc_sli_prep_dev_for_reset(struct lpfc_hba *phba)
12089 {
12090 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12091 			"2710 PCI channel disable preparing for reset\n");
12092 
12093 	/* Block any management I/Os to the device */
12094 	lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT);
12095 
12096 	/* Block all SCSI devices' I/Os on the host */
12097 	lpfc_scsi_dev_block(phba);
12098 
12099 	/* Flush all driver's outstanding SCSI I/Os as we are to reset */
12100 	lpfc_sli_flush_io_rings(phba);
12101 
12102 	/* stop all timers */
12103 	lpfc_stop_hba_timers(phba);
12104 
12105 	/* Disable interrupt and pci device */
12106 	lpfc_sli_disable_intr(phba);
12107 	pci_disable_device(phba->pcidev);
12108 }
12109 
12110 /**
12111  * lpfc_sli_prep_dev_for_perm_failure - Prepare SLI3 dev for pci slot disable
12112  * @phba: pointer to lpfc hba data structure.
12113  *
12114  * This routine is called to prepare the SLI3 device for PCI slot permanently
12115  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
12116  * pending I/Os.
12117  **/
12118 static void
lpfc_sli_prep_dev_for_perm_failure(struct lpfc_hba * phba)12119 lpfc_sli_prep_dev_for_perm_failure(struct lpfc_hba *phba)
12120 {
12121 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12122 			"2711 PCI channel permanent disable for failure\n");
12123 	/* Block all SCSI devices' I/Os on the host */
12124 	lpfc_scsi_dev_block(phba);
12125 
12126 	/* stop all timers */
12127 	lpfc_stop_hba_timers(phba);
12128 
12129 	/* Clean up all driver's outstanding SCSI I/Os */
12130 	lpfc_sli_flush_io_rings(phba);
12131 }
12132 
12133 /**
12134  * lpfc_io_error_detected_s3 - Method for handling SLI-3 device PCI I/O error
12135  * @pdev: pointer to PCI device.
12136  * @state: the current PCI connection state.
12137  *
12138  * This routine is called from the PCI subsystem for I/O error handling to
12139  * device with SLI-3 interface spec. This function is called by the PCI
12140  * subsystem after a PCI bus error affecting this device has been detected.
12141  * When this function is invoked, it will need to stop all the I/Os and
12142  * interrupt(s) to the device. Once that is done, it will return
12143  * PCI_ERS_RESULT_NEED_RESET for the PCI subsystem to perform proper recovery
12144  * as desired.
12145  *
12146  * Return codes
12147  * 	PCI_ERS_RESULT_CAN_RECOVER - can be recovered with reset_link
12148  * 	PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
12149  * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered
12150  **/
12151 static pci_ers_result_t
lpfc_io_error_detected_s3(struct pci_dev * pdev,pci_channel_state_t state)12152 lpfc_io_error_detected_s3(struct pci_dev *pdev, pci_channel_state_t state)
12153 {
12154 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
12155 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12156 
12157 	switch (state) {
12158 	case pci_channel_io_normal:
12159 		/* Non-fatal error, prepare for recovery */
12160 		lpfc_sli_prep_dev_for_recover(phba);
12161 		return PCI_ERS_RESULT_CAN_RECOVER;
12162 	case pci_channel_io_frozen:
12163 		/* Fatal error, prepare for slot reset */
12164 		lpfc_sli_prep_dev_for_reset(phba);
12165 		return PCI_ERS_RESULT_NEED_RESET;
12166 	case pci_channel_io_perm_failure:
12167 		/* Permanent failure, prepare for device down */
12168 		lpfc_sli_prep_dev_for_perm_failure(phba);
12169 		return PCI_ERS_RESULT_DISCONNECT;
12170 	default:
12171 		/* Unknown state, prepare and request slot reset */
12172 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12173 				"0472 Unknown PCI error state: x%x\n", state);
12174 		lpfc_sli_prep_dev_for_reset(phba);
12175 		return PCI_ERS_RESULT_NEED_RESET;
12176 	}
12177 }
12178 
12179 /**
12180  * lpfc_io_slot_reset_s3 - Method for restarting PCI SLI-3 device from scratch.
12181  * @pdev: pointer to PCI device.
12182  *
12183  * This routine is called from the PCI subsystem for error handling to
12184  * device with SLI-3 interface spec. This is called after PCI bus has been
12185  * reset to restart the PCI card from scratch, as if from a cold-boot.
12186  * During the PCI subsystem error recovery, after driver returns
12187  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
12188  * recovery and then call this routine before calling the .resume method
12189  * to recover the device. This function will initialize the HBA device,
12190  * enable the interrupt, but it will just put the HBA to offline state
12191  * without passing any I/O traffic.
12192  *
12193  * Return codes
12194  * 	PCI_ERS_RESULT_RECOVERED - the device has been recovered
12195  * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered
12196  */
12197 static pci_ers_result_t
lpfc_io_slot_reset_s3(struct pci_dev * pdev)12198 lpfc_io_slot_reset_s3(struct pci_dev *pdev)
12199 {
12200 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
12201 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12202 	struct lpfc_sli *psli = &phba->sli;
12203 	uint32_t intr_mode;
12204 
12205 	dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
12206 	if (pci_enable_device_mem(pdev)) {
12207 		printk(KERN_ERR "lpfc: Cannot re-enable "
12208 			"PCI device after reset.\n");
12209 		return PCI_ERS_RESULT_DISCONNECT;
12210 	}
12211 
12212 	pci_restore_state(pdev);
12213 
12214 	/*
12215 	 * As the new kernel behavior of pci_restore_state() API call clears
12216 	 * device saved_state flag, need to save the restored state again.
12217 	 */
12218 	pci_save_state(pdev);
12219 
12220 	if (pdev->is_busmaster)
12221 		pci_set_master(pdev);
12222 
12223 	spin_lock_irq(&phba->hbalock);
12224 	psli->sli_flag &= ~LPFC_SLI_ACTIVE;
12225 	spin_unlock_irq(&phba->hbalock);
12226 
12227 	/* Configure and enable interrupt */
12228 	intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
12229 	if (intr_mode == LPFC_INTR_ERROR) {
12230 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12231 				"0427 Cannot re-enable interrupt after "
12232 				"slot reset.\n");
12233 		return PCI_ERS_RESULT_DISCONNECT;
12234 	} else
12235 		phba->intr_mode = intr_mode;
12236 
12237 	/* Take device offline, it will perform cleanup */
12238 	lpfc_offline_prep(phba, LPFC_MBX_WAIT);
12239 	lpfc_offline(phba);
12240 	lpfc_sli_brdrestart(phba);
12241 
12242 	/* Log the current active interrupt mode */
12243 	lpfc_log_intr_mode(phba, phba->intr_mode);
12244 
12245 	return PCI_ERS_RESULT_RECOVERED;
12246 }
12247 
12248 /**
12249  * lpfc_io_resume_s3 - Method for resuming PCI I/O operation on SLI-3 device.
12250  * @pdev: pointer to PCI device
12251  *
12252  * This routine is called from the PCI subsystem for error handling to device
12253  * with SLI-3 interface spec. It is called when kernel error recovery tells
12254  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
12255  * error recovery. After this call, traffic can start to flow from this device
12256  * again.
12257  */
12258 static void
lpfc_io_resume_s3(struct pci_dev * pdev)12259 lpfc_io_resume_s3(struct pci_dev *pdev)
12260 {
12261 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
12262 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12263 
12264 	/* Bring device online, it will be no-op for non-fatal error resume */
12265 	lpfc_online(phba);
12266 }
12267 
12268 /**
12269  * lpfc_sli4_get_els_iocb_cnt - Calculate the # of ELS IOCBs to reserve
12270  * @phba: pointer to lpfc hba data structure.
12271  *
12272  * returns the number of ELS/CT IOCBs to reserve
12273  **/
12274 int
lpfc_sli4_get_els_iocb_cnt(struct lpfc_hba * phba)12275 lpfc_sli4_get_els_iocb_cnt(struct lpfc_hba *phba)
12276 {
12277 	int max_xri = phba->sli4_hba.max_cfg_param.max_xri;
12278 
12279 	if (phba->sli_rev == LPFC_SLI_REV4) {
12280 		if (max_xri <= 100)
12281 			return 10;
12282 		else if (max_xri <= 256)
12283 			return 25;
12284 		else if (max_xri <= 512)
12285 			return 50;
12286 		else if (max_xri <= 1024)
12287 			return 100;
12288 		else if (max_xri <= 1536)
12289 			return 150;
12290 		else if (max_xri <= 2048)
12291 			return 200;
12292 		else
12293 			return 250;
12294 	} else
12295 		return 0;
12296 }
12297 
12298 /**
12299  * lpfc_sli4_get_iocb_cnt - Calculate the # of total IOCBs to reserve
12300  * @phba: pointer to lpfc hba data structure.
12301  *
12302  * returns the number of ELS/CT + NVMET IOCBs to reserve
12303  **/
12304 int
lpfc_sli4_get_iocb_cnt(struct lpfc_hba * phba)12305 lpfc_sli4_get_iocb_cnt(struct lpfc_hba *phba)
12306 {
12307 	int max_xri = lpfc_sli4_get_els_iocb_cnt(phba);
12308 
12309 	if (phba->nvmet_support)
12310 		max_xri += LPFC_NVMET_BUF_POST;
12311 	return max_xri;
12312 }
12313 
12314 
12315 static void
lpfc_log_write_firmware_error(struct lpfc_hba * phba,uint32_t offset,uint32_t magic_number,uint32_t ftype,uint32_t fid,uint32_t fsize,const struct firmware * fw)12316 lpfc_log_write_firmware_error(struct lpfc_hba *phba, uint32_t offset,
12317 	uint32_t magic_number, uint32_t ftype, uint32_t fid, uint32_t fsize,
12318 	const struct firmware *fw)
12319 {
12320 	if ((offset == ADD_STATUS_FW_NOT_SUPPORTED) ||
12321 	    (phba->pcidev->device == PCI_DEVICE_ID_LANCER_G6_FC &&
12322 	     magic_number != MAGIC_NUMER_G6) ||
12323 	    (phba->pcidev->device == PCI_DEVICE_ID_LANCER_G7_FC &&
12324 	     magic_number != MAGIC_NUMER_G7))
12325 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12326 			"3030 This firmware version is not supported on "
12327 			"this HBA model. Device:%x Magic:%x Type:%x "
12328 			"ID:%x Size %d %zd\n",
12329 			phba->pcidev->device, magic_number, ftype, fid,
12330 			fsize, fw->size);
12331 	else
12332 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12333 			"3022 FW Download failed. Device:%x Magic:%x Type:%x "
12334 			"ID:%x Size %d %zd\n",
12335 			phba->pcidev->device, magic_number, ftype, fid,
12336 			fsize, fw->size);
12337 }
12338 
12339 
12340 /**
12341  * lpfc_write_firmware - attempt to write a firmware image to the port
12342  * @fw: pointer to firmware image returned from request_firmware.
12343  * @phba: pointer to lpfc hba data structure.
12344  *
12345  **/
12346 static void
lpfc_write_firmware(const struct firmware * fw,void * context)12347 lpfc_write_firmware(const struct firmware *fw, void *context)
12348 {
12349 	struct lpfc_hba *phba = (struct lpfc_hba *)context;
12350 	char fwrev[FW_REV_STR_SIZE];
12351 	struct lpfc_grp_hdr *image;
12352 	struct list_head dma_buffer_list;
12353 	int i, rc = 0;
12354 	struct lpfc_dmabuf *dmabuf, *next;
12355 	uint32_t offset = 0, temp_offset = 0;
12356 	uint32_t magic_number, ftype, fid, fsize;
12357 
12358 	/* It can be null in no-wait mode, sanity check */
12359 	if (!fw) {
12360 		rc = -ENXIO;
12361 		goto out;
12362 	}
12363 	image = (struct lpfc_grp_hdr *)fw->data;
12364 
12365 	magic_number = be32_to_cpu(image->magic_number);
12366 	ftype = bf_get_be32(lpfc_grp_hdr_file_type, image);
12367 	fid = bf_get_be32(lpfc_grp_hdr_id, image);
12368 	fsize = be32_to_cpu(image->size);
12369 
12370 	INIT_LIST_HEAD(&dma_buffer_list);
12371 	lpfc_decode_firmware_rev(phba, fwrev, 1);
12372 	if (strncmp(fwrev, image->revision, strnlen(image->revision, 16))) {
12373 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12374 				"3023 Updating Firmware, Current Version:%s "
12375 				"New Version:%s\n",
12376 				fwrev, image->revision);
12377 		for (i = 0; i < LPFC_MBX_WR_CONFIG_MAX_BDE; i++) {
12378 			dmabuf = kzalloc(sizeof(struct lpfc_dmabuf),
12379 					 GFP_KERNEL);
12380 			if (!dmabuf) {
12381 				rc = -ENOMEM;
12382 				goto release_out;
12383 			}
12384 			dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
12385 							  SLI4_PAGE_SIZE,
12386 							  &dmabuf->phys,
12387 							  GFP_KERNEL);
12388 			if (!dmabuf->virt) {
12389 				kfree(dmabuf);
12390 				rc = -ENOMEM;
12391 				goto release_out;
12392 			}
12393 			list_add_tail(&dmabuf->list, &dma_buffer_list);
12394 		}
12395 		while (offset < fw->size) {
12396 			temp_offset = offset;
12397 			list_for_each_entry(dmabuf, &dma_buffer_list, list) {
12398 				if (temp_offset + SLI4_PAGE_SIZE > fw->size) {
12399 					memcpy(dmabuf->virt,
12400 					       fw->data + temp_offset,
12401 					       fw->size - temp_offset);
12402 					temp_offset = fw->size;
12403 					break;
12404 				}
12405 				memcpy(dmabuf->virt, fw->data + temp_offset,
12406 				       SLI4_PAGE_SIZE);
12407 				temp_offset += SLI4_PAGE_SIZE;
12408 			}
12409 			rc = lpfc_wr_object(phba, &dma_buffer_list,
12410 				    (fw->size - offset), &offset);
12411 			if (rc) {
12412 				lpfc_log_write_firmware_error(phba, offset,
12413 					magic_number, ftype, fid, fsize, fw);
12414 				goto release_out;
12415 			}
12416 		}
12417 		rc = offset;
12418 	} else
12419 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12420 				"3029 Skipped Firmware update, Current "
12421 				"Version:%s New Version:%s\n",
12422 				fwrev, image->revision);
12423 
12424 release_out:
12425 	list_for_each_entry_safe(dmabuf, next, &dma_buffer_list, list) {
12426 		list_del(&dmabuf->list);
12427 		dma_free_coherent(&phba->pcidev->dev, SLI4_PAGE_SIZE,
12428 				  dmabuf->virt, dmabuf->phys);
12429 		kfree(dmabuf);
12430 	}
12431 	release_firmware(fw);
12432 out:
12433 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12434 			"3024 Firmware update done: %d.\n", rc);
12435 	return;
12436 }
12437 
12438 /**
12439  * lpfc_sli4_request_firmware_update - Request linux generic firmware upgrade
12440  * @phba: pointer to lpfc hba data structure.
12441  *
12442  * This routine is called to perform Linux generic firmware upgrade on device
12443  * that supports such feature.
12444  **/
12445 int
lpfc_sli4_request_firmware_update(struct lpfc_hba * phba,uint8_t fw_upgrade)12446 lpfc_sli4_request_firmware_update(struct lpfc_hba *phba, uint8_t fw_upgrade)
12447 {
12448 	uint8_t file_name[ELX_MODEL_NAME_SIZE];
12449 	int ret;
12450 	const struct firmware *fw;
12451 
12452 	/* Only supported on SLI4 interface type 2 for now */
12453 	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
12454 	    LPFC_SLI_INTF_IF_TYPE_2)
12455 		return -EPERM;
12456 
12457 	snprintf(file_name, ELX_MODEL_NAME_SIZE, "%s.grp", phba->ModelName);
12458 
12459 	if (fw_upgrade == INT_FW_UPGRADE) {
12460 		ret = request_firmware_nowait(THIS_MODULE, FW_ACTION_HOTPLUG,
12461 					file_name, &phba->pcidev->dev,
12462 					GFP_KERNEL, (void *)phba,
12463 					lpfc_write_firmware);
12464 	} else if (fw_upgrade == RUN_FW_UPGRADE) {
12465 		ret = request_firmware(&fw, file_name, &phba->pcidev->dev);
12466 		if (!ret)
12467 			lpfc_write_firmware(fw, (void *)phba);
12468 	} else {
12469 		ret = -EINVAL;
12470 	}
12471 
12472 	return ret;
12473 }
12474 
12475 /**
12476  * lpfc_pci_probe_one_s4 - PCI probe func to reg SLI-4 device to PCI subsys
12477  * @pdev: pointer to PCI device
12478  * @pid: pointer to PCI device identifier
12479  *
12480  * This routine is called from the kernel's PCI subsystem to device with
12481  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
12482  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
12483  * information of the device and driver to see if the driver state that it
12484  * can support this kind of device. If the match is successful, the driver
12485  * core invokes this routine. If this routine determines it can claim the HBA,
12486  * it does all the initialization that it needs to do to handle the HBA
12487  * properly.
12488  *
12489  * Return code
12490  * 	0 - driver can claim the device
12491  * 	negative value - driver can not claim the device
12492  **/
12493 static int
lpfc_pci_probe_one_s4(struct pci_dev * pdev,const struct pci_device_id * pid)12494 lpfc_pci_probe_one_s4(struct pci_dev *pdev, const struct pci_device_id *pid)
12495 {
12496 	struct lpfc_hba   *phba;
12497 	struct lpfc_vport *vport = NULL;
12498 	struct Scsi_Host  *shost = NULL;
12499 	int error;
12500 	uint32_t cfg_mode, intr_mode;
12501 
12502 	/* Allocate memory for HBA structure */
12503 	phba = lpfc_hba_alloc(pdev);
12504 	if (!phba)
12505 		return -ENOMEM;
12506 
12507 	/* Perform generic PCI device enabling operation */
12508 	error = lpfc_enable_pci_dev(phba);
12509 	if (error)
12510 		goto out_free_phba;
12511 
12512 	/* Set up SLI API function jump table for PCI-device group-1 HBAs */
12513 	error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_OC);
12514 	if (error)
12515 		goto out_disable_pci_dev;
12516 
12517 	/* Set up SLI-4 specific device PCI memory space */
12518 	error = lpfc_sli4_pci_mem_setup(phba);
12519 	if (error) {
12520 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12521 				"1410 Failed to set up pci memory space.\n");
12522 		goto out_disable_pci_dev;
12523 	}
12524 
12525 	/* Set up SLI-4 Specific device driver resources */
12526 	error = lpfc_sli4_driver_resource_setup(phba);
12527 	if (error) {
12528 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12529 				"1412 Failed to set up driver resource.\n");
12530 		goto out_unset_pci_mem_s4;
12531 	}
12532 
12533 	INIT_LIST_HEAD(&phba->active_rrq_list);
12534 	INIT_LIST_HEAD(&phba->fcf.fcf_pri_list);
12535 
12536 	/* Set up common device driver resources */
12537 	error = lpfc_setup_driver_resource_phase2(phba);
12538 	if (error) {
12539 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12540 				"1414 Failed to set up driver resource.\n");
12541 		goto out_unset_driver_resource_s4;
12542 	}
12543 
12544 	/* Get the default values for Model Name and Description */
12545 	lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
12546 
12547 	/* Now, trying to enable interrupt and bring up the device */
12548 	cfg_mode = phba->cfg_use_msi;
12549 
12550 	/* Put device to a known state before enabling interrupt */
12551 	phba->pport = NULL;
12552 	lpfc_stop_port(phba);
12553 
12554 	/* Configure and enable interrupt */
12555 	intr_mode = lpfc_sli4_enable_intr(phba, cfg_mode);
12556 	if (intr_mode == LPFC_INTR_ERROR) {
12557 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12558 				"0426 Failed to enable interrupt.\n");
12559 		error = -ENODEV;
12560 		goto out_unset_driver_resource;
12561 	}
12562 	/* Default to single EQ for non-MSI-X */
12563 	if (phba->intr_type != MSIX) {
12564 		phba->cfg_irq_chann = 1;
12565 		if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
12566 			if (phba->nvmet_support)
12567 				phba->cfg_nvmet_mrq = 1;
12568 		}
12569 	}
12570 	lpfc_cpu_affinity_check(phba, phba->cfg_irq_chann);
12571 
12572 	/* Create SCSI host to the physical port */
12573 	error = lpfc_create_shost(phba);
12574 	if (error) {
12575 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12576 				"1415 Failed to create scsi host.\n");
12577 		goto out_disable_intr;
12578 	}
12579 	vport = phba->pport;
12580 	shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
12581 
12582 	/* Configure sysfs attributes */
12583 	error = lpfc_alloc_sysfs_attr(vport);
12584 	if (error) {
12585 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12586 				"1416 Failed to allocate sysfs attr\n");
12587 		goto out_destroy_shost;
12588 	}
12589 
12590 	/* Set up SLI-4 HBA */
12591 	if (lpfc_sli4_hba_setup(phba)) {
12592 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12593 				"1421 Failed to set up hba\n");
12594 		error = -ENODEV;
12595 		goto out_free_sysfs_attr;
12596 	}
12597 
12598 	/* Log the current active interrupt mode */
12599 	phba->intr_mode = intr_mode;
12600 	lpfc_log_intr_mode(phba, intr_mode);
12601 
12602 	/* Perform post initialization setup */
12603 	lpfc_post_init_setup(phba);
12604 
12605 	/* NVME support in FW earlier in the driver load corrects the
12606 	 * FC4 type making a check for nvme_support unnecessary.
12607 	 */
12608 	if (phba->nvmet_support == 0) {
12609 		if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
12610 			/* Create NVME binding with nvme_fc_transport. This
12611 			 * ensures the vport is initialized.  If the localport
12612 			 * create fails, it should not unload the driver to
12613 			 * support field issues.
12614 			 */
12615 			error = lpfc_nvme_create_localport(vport);
12616 			if (error) {
12617 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12618 						"6004 NVME registration "
12619 						"failed, error x%x\n",
12620 						error);
12621 			}
12622 		}
12623 	}
12624 
12625 	/* check for firmware upgrade or downgrade */
12626 	if (phba->cfg_request_firmware_upgrade)
12627 		lpfc_sli4_request_firmware_update(phba, INT_FW_UPGRADE);
12628 
12629 	/* Check if there are static vports to be created. */
12630 	lpfc_create_static_vport(phba);
12631 
12632 	/* Enable RAS FW log support */
12633 	lpfc_sli4_ras_setup(phba);
12634 
12635 	return 0;
12636 
12637 out_free_sysfs_attr:
12638 	lpfc_free_sysfs_attr(vport);
12639 out_destroy_shost:
12640 	lpfc_destroy_shost(phba);
12641 out_disable_intr:
12642 	lpfc_sli4_disable_intr(phba);
12643 out_unset_driver_resource:
12644 	lpfc_unset_driver_resource_phase2(phba);
12645 out_unset_driver_resource_s4:
12646 	lpfc_sli4_driver_resource_unset(phba);
12647 out_unset_pci_mem_s4:
12648 	lpfc_sli4_pci_mem_unset(phba);
12649 out_disable_pci_dev:
12650 	lpfc_disable_pci_dev(phba);
12651 	if (shost)
12652 		scsi_host_put(shost);
12653 out_free_phba:
12654 	lpfc_hba_free(phba);
12655 	return error;
12656 }
12657 
12658 /**
12659  * lpfc_pci_remove_one_s4 - PCI func to unreg SLI-4 device from PCI subsystem
12660  * @pdev: pointer to PCI device
12661  *
12662  * This routine is called from the kernel's PCI subsystem to device with
12663  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
12664  * removed from PCI bus, it performs all the necessary cleanup for the HBA
12665  * device to be removed from the PCI subsystem properly.
12666  **/
12667 static void
lpfc_pci_remove_one_s4(struct pci_dev * pdev)12668 lpfc_pci_remove_one_s4(struct pci_dev *pdev)
12669 {
12670 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
12671 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
12672 	struct lpfc_vport **vports;
12673 	struct lpfc_hba *phba = vport->phba;
12674 	int i;
12675 
12676 	/* Mark the device unloading flag */
12677 	spin_lock_irq(&phba->hbalock);
12678 	vport->load_flag |= FC_UNLOADING;
12679 	spin_unlock_irq(&phba->hbalock);
12680 
12681 	/* Free the HBA sysfs attributes */
12682 	lpfc_free_sysfs_attr(vport);
12683 
12684 	/* Release all the vports against this physical port */
12685 	vports = lpfc_create_vport_work_array(phba);
12686 	if (vports != NULL)
12687 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
12688 			if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
12689 				continue;
12690 			fc_vport_terminate(vports[i]->fc_vport);
12691 		}
12692 	lpfc_destroy_vport_work_array(phba, vports);
12693 
12694 	/* Remove FC host and then SCSI host with the physical port */
12695 	fc_remove_host(shost);
12696 	scsi_remove_host(shost);
12697 
12698 	/* Perform ndlp cleanup on the physical port.  The nvme and nvmet
12699 	 * localports are destroyed after to cleanup all transport memory.
12700 	 */
12701 	lpfc_cleanup(vport);
12702 	lpfc_nvmet_destroy_targetport(phba);
12703 	lpfc_nvme_destroy_localport(vport);
12704 
12705 	/* De-allocate multi-XRI pools */
12706 	if (phba->cfg_xri_rebalancing)
12707 		lpfc_destroy_multixri_pools(phba);
12708 
12709 	/*
12710 	 * Bring down the SLI Layer. This step disables all interrupts,
12711 	 * clears the rings, discards all mailbox commands, and resets
12712 	 * the HBA FCoE function.
12713 	 */
12714 	lpfc_debugfs_terminate(vport);
12715 
12716 	lpfc_stop_hba_timers(phba);
12717 	spin_lock_irq(&phba->port_list_lock);
12718 	list_del_init(&vport->listentry);
12719 	spin_unlock_irq(&phba->port_list_lock);
12720 
12721 	/* Perform scsi free before driver resource_unset since scsi
12722 	 * buffers are released to their corresponding pools here.
12723 	 */
12724 	lpfc_io_free(phba);
12725 	lpfc_free_iocb_list(phba);
12726 	lpfc_sli4_hba_unset(phba);
12727 
12728 	lpfc_unset_driver_resource_phase2(phba);
12729 	lpfc_sli4_driver_resource_unset(phba);
12730 
12731 	/* Unmap adapter Control and Doorbell registers */
12732 	lpfc_sli4_pci_mem_unset(phba);
12733 
12734 	/* Release PCI resources and disable device's PCI function */
12735 	scsi_host_put(shost);
12736 	lpfc_disable_pci_dev(phba);
12737 
12738 	/* Finally, free the driver's device data structure */
12739 	lpfc_hba_free(phba);
12740 
12741 	return;
12742 }
12743 
12744 /**
12745  * lpfc_pci_suspend_one_s4 - PCI func to suspend SLI-4 device for power mgmnt
12746  * @pdev: pointer to PCI device
12747  * @msg: power management message
12748  *
12749  * This routine is called from the kernel's PCI subsystem to support system
12750  * Power Management (PM) to device with SLI-4 interface spec. When PM invokes
12751  * this method, it quiesces the device by stopping the driver's worker
12752  * thread for the device, turning off device's interrupt and DMA, and bring
12753  * the device offline. Note that as the driver implements the minimum PM
12754  * requirements to a power-aware driver's PM support for suspend/resume -- all
12755  * the possible PM messages (SUSPEND, HIBERNATE, FREEZE) to the suspend()
12756  * method call will be treated as SUSPEND and the driver will fully
12757  * reinitialize its device during resume() method call, the driver will set
12758  * device to PCI_D3hot state in PCI config space instead of setting it
12759  * according to the @msg provided by the PM.
12760  *
12761  * Return code
12762  * 	0 - driver suspended the device
12763  * 	Error otherwise
12764  **/
12765 static int
lpfc_pci_suspend_one_s4(struct pci_dev * pdev,pm_message_t msg)12766 lpfc_pci_suspend_one_s4(struct pci_dev *pdev, pm_message_t msg)
12767 {
12768 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
12769 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12770 
12771 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12772 			"2843 PCI device Power Management suspend.\n");
12773 
12774 	/* Bring down the device */
12775 	lpfc_offline_prep(phba, LPFC_MBX_WAIT);
12776 	lpfc_offline(phba);
12777 	kthread_stop(phba->worker_thread);
12778 
12779 	/* Disable interrupt from device */
12780 	lpfc_sli4_disable_intr(phba);
12781 	lpfc_sli4_queue_destroy(phba);
12782 
12783 	/* Save device state to PCI config space */
12784 	pci_save_state(pdev);
12785 	pci_set_power_state(pdev, PCI_D3hot);
12786 
12787 	return 0;
12788 }
12789 
12790 /**
12791  * lpfc_pci_resume_one_s4 - PCI func to resume SLI-4 device for power mgmnt
12792  * @pdev: pointer to PCI device
12793  *
12794  * This routine is called from the kernel's PCI subsystem to support system
12795  * Power Management (PM) to device with SLI-4 interface spac. When PM invokes
12796  * this method, it restores the device's PCI config space state and fully
12797  * reinitializes the device and brings it online. Note that as the driver
12798  * implements the minimum PM requirements to a power-aware driver's PM for
12799  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
12800  * to the suspend() method call will be treated as SUSPEND and the driver
12801  * will fully reinitialize its device during resume() method call, the device
12802  * will be set to PCI_D0 directly in PCI config space before restoring the
12803  * state.
12804  *
12805  * Return code
12806  * 	0 - driver suspended the device
12807  * 	Error otherwise
12808  **/
12809 static int
lpfc_pci_resume_one_s4(struct pci_dev * pdev)12810 lpfc_pci_resume_one_s4(struct pci_dev *pdev)
12811 {
12812 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
12813 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12814 	uint32_t intr_mode;
12815 	int error;
12816 
12817 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12818 			"0292 PCI device Power Management resume.\n");
12819 
12820 	/* Restore device state from PCI config space */
12821 	pci_set_power_state(pdev, PCI_D0);
12822 	pci_restore_state(pdev);
12823 
12824 	/*
12825 	 * As the new kernel behavior of pci_restore_state() API call clears
12826 	 * device saved_state flag, need to save the restored state again.
12827 	 */
12828 	pci_save_state(pdev);
12829 
12830 	if (pdev->is_busmaster)
12831 		pci_set_master(pdev);
12832 
12833 	 /* Startup the kernel thread for this host adapter. */
12834 	phba->worker_thread = kthread_run(lpfc_do_work, phba,
12835 					"lpfc_worker_%d", phba->brd_no);
12836 	if (IS_ERR(phba->worker_thread)) {
12837 		error = PTR_ERR(phba->worker_thread);
12838 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12839 				"0293 PM resume failed to start worker "
12840 				"thread: error=x%x.\n", error);
12841 		return error;
12842 	}
12843 
12844 	/* Configure and enable interrupt */
12845 	intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
12846 	if (intr_mode == LPFC_INTR_ERROR) {
12847 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12848 				"0294 PM resume Failed to enable interrupt\n");
12849 		return -EIO;
12850 	} else
12851 		phba->intr_mode = intr_mode;
12852 
12853 	/* Restart HBA and bring it online */
12854 	lpfc_sli_brdrestart(phba);
12855 	lpfc_online(phba);
12856 
12857 	/* Log the current active interrupt mode */
12858 	lpfc_log_intr_mode(phba, phba->intr_mode);
12859 
12860 	return 0;
12861 }
12862 
12863 /**
12864  * lpfc_sli4_prep_dev_for_recover - Prepare SLI4 device for pci slot recover
12865  * @phba: pointer to lpfc hba data structure.
12866  *
12867  * This routine is called to prepare the SLI4 device for PCI slot recover. It
12868  * aborts all the outstanding SCSI I/Os to the pci device.
12869  **/
12870 static void
lpfc_sli4_prep_dev_for_recover(struct lpfc_hba * phba)12871 lpfc_sli4_prep_dev_for_recover(struct lpfc_hba *phba)
12872 {
12873 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12874 			"2828 PCI channel I/O abort preparing for recovery\n");
12875 	/*
12876 	 * There may be errored I/Os through HBA, abort all I/Os on txcmplq
12877 	 * and let the SCSI mid-layer to retry them to recover.
12878 	 */
12879 	lpfc_sli_abort_fcp_rings(phba);
12880 }
12881 
12882 /**
12883  * lpfc_sli4_prep_dev_for_reset - Prepare SLI4 device for pci slot reset
12884  * @phba: pointer to lpfc hba data structure.
12885  *
12886  * This routine is called to prepare the SLI4 device for PCI slot reset. It
12887  * disables the device interrupt and pci device, and aborts the internal FCP
12888  * pending I/Os.
12889  **/
12890 static void
lpfc_sli4_prep_dev_for_reset(struct lpfc_hba * phba)12891 lpfc_sli4_prep_dev_for_reset(struct lpfc_hba *phba)
12892 {
12893 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12894 			"2826 PCI channel disable preparing for reset\n");
12895 
12896 	/* Block any management I/Os to the device */
12897 	lpfc_block_mgmt_io(phba, LPFC_MBX_NO_WAIT);
12898 
12899 	/* Block all SCSI devices' I/Os on the host */
12900 	lpfc_scsi_dev_block(phba);
12901 
12902 	/* Flush all driver's outstanding I/Os as we are to reset */
12903 	lpfc_sli_flush_io_rings(phba);
12904 
12905 	/* stop all timers */
12906 	lpfc_stop_hba_timers(phba);
12907 
12908 	/* Disable interrupt and pci device */
12909 	lpfc_sli4_disable_intr(phba);
12910 	lpfc_sli4_queue_destroy(phba);
12911 	pci_disable_device(phba->pcidev);
12912 }
12913 
12914 /**
12915  * lpfc_sli4_prep_dev_for_perm_failure - Prepare SLI4 dev for pci slot disable
12916  * @phba: pointer to lpfc hba data structure.
12917  *
12918  * This routine is called to prepare the SLI4 device for PCI slot permanently
12919  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
12920  * pending I/Os.
12921  **/
12922 static void
lpfc_sli4_prep_dev_for_perm_failure(struct lpfc_hba * phba)12923 lpfc_sli4_prep_dev_for_perm_failure(struct lpfc_hba *phba)
12924 {
12925 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12926 			"2827 PCI channel permanent disable for failure\n");
12927 
12928 	/* Block all SCSI devices' I/Os on the host */
12929 	lpfc_scsi_dev_block(phba);
12930 
12931 	/* stop all timers */
12932 	lpfc_stop_hba_timers(phba);
12933 
12934 	/* Clean up all driver's outstanding I/Os */
12935 	lpfc_sli_flush_io_rings(phba);
12936 }
12937 
12938 /**
12939  * lpfc_io_error_detected_s4 - Method for handling PCI I/O error to SLI-4 device
12940  * @pdev: pointer to PCI device.
12941  * @state: the current PCI connection state.
12942  *
12943  * This routine is called from the PCI subsystem for error handling to device
12944  * with SLI-4 interface spec. This function is called by the PCI subsystem
12945  * after a PCI bus error affecting this device has been detected. When this
12946  * function is invoked, it will need to stop all the I/Os and interrupt(s)
12947  * to the device. Once that is done, it will return PCI_ERS_RESULT_NEED_RESET
12948  * for the PCI subsystem to perform proper recovery as desired.
12949  *
12950  * Return codes
12951  * 	PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
12952  * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered
12953  **/
12954 static pci_ers_result_t
lpfc_io_error_detected_s4(struct pci_dev * pdev,pci_channel_state_t state)12955 lpfc_io_error_detected_s4(struct pci_dev *pdev, pci_channel_state_t state)
12956 {
12957 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
12958 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12959 
12960 	switch (state) {
12961 	case pci_channel_io_normal:
12962 		/* Non-fatal error, prepare for recovery */
12963 		lpfc_sli4_prep_dev_for_recover(phba);
12964 		return PCI_ERS_RESULT_CAN_RECOVER;
12965 	case pci_channel_io_frozen:
12966 		/* Fatal error, prepare for slot reset */
12967 		lpfc_sli4_prep_dev_for_reset(phba);
12968 		return PCI_ERS_RESULT_NEED_RESET;
12969 	case pci_channel_io_perm_failure:
12970 		/* Permanent failure, prepare for device down */
12971 		lpfc_sli4_prep_dev_for_perm_failure(phba);
12972 		return PCI_ERS_RESULT_DISCONNECT;
12973 	default:
12974 		/* Unknown state, prepare and request slot reset */
12975 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12976 				"2825 Unknown PCI error state: x%x\n", state);
12977 		lpfc_sli4_prep_dev_for_reset(phba);
12978 		return PCI_ERS_RESULT_NEED_RESET;
12979 	}
12980 }
12981 
12982 /**
12983  * lpfc_io_slot_reset_s4 - Method for restart PCI SLI-4 device from scratch
12984  * @pdev: pointer to PCI device.
12985  *
12986  * This routine is called from the PCI subsystem for error handling to device
12987  * with SLI-4 interface spec. It is called after PCI bus has been reset to
12988  * restart the PCI card from scratch, as if from a cold-boot. During the
12989  * PCI subsystem error recovery, after the driver returns
12990  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
12991  * recovery and then call this routine before calling the .resume method to
12992  * recover the device. This function will initialize the HBA device, enable
12993  * the interrupt, but it will just put the HBA to offline state without
12994  * passing any I/O traffic.
12995  *
12996  * Return codes
12997  * 	PCI_ERS_RESULT_RECOVERED - the device has been recovered
12998  * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered
12999  */
13000 static pci_ers_result_t
lpfc_io_slot_reset_s4(struct pci_dev * pdev)13001 lpfc_io_slot_reset_s4(struct pci_dev *pdev)
13002 {
13003 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
13004 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13005 	struct lpfc_sli *psli = &phba->sli;
13006 	uint32_t intr_mode;
13007 
13008 	dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
13009 	if (pci_enable_device_mem(pdev)) {
13010 		printk(KERN_ERR "lpfc: Cannot re-enable "
13011 			"PCI device after reset.\n");
13012 		return PCI_ERS_RESULT_DISCONNECT;
13013 	}
13014 
13015 	pci_restore_state(pdev);
13016 
13017 	/*
13018 	 * As the new kernel behavior of pci_restore_state() API call clears
13019 	 * device saved_state flag, need to save the restored state again.
13020 	 */
13021 	pci_save_state(pdev);
13022 
13023 	if (pdev->is_busmaster)
13024 		pci_set_master(pdev);
13025 
13026 	spin_lock_irq(&phba->hbalock);
13027 	psli->sli_flag &= ~LPFC_SLI_ACTIVE;
13028 	spin_unlock_irq(&phba->hbalock);
13029 
13030 	/* Configure and enable interrupt */
13031 	intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
13032 	if (intr_mode == LPFC_INTR_ERROR) {
13033 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13034 				"2824 Cannot re-enable interrupt after "
13035 				"slot reset.\n");
13036 		return PCI_ERS_RESULT_DISCONNECT;
13037 	} else
13038 		phba->intr_mode = intr_mode;
13039 
13040 	/* Log the current active interrupt mode */
13041 	lpfc_log_intr_mode(phba, phba->intr_mode);
13042 
13043 	return PCI_ERS_RESULT_RECOVERED;
13044 }
13045 
13046 /**
13047  * lpfc_io_resume_s4 - Method for resuming PCI I/O operation to SLI-4 device
13048  * @pdev: pointer to PCI device
13049  *
13050  * This routine is called from the PCI subsystem for error handling to device
13051  * with SLI-4 interface spec. It is called when kernel error recovery tells
13052  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
13053  * error recovery. After this call, traffic can start to flow from this device
13054  * again.
13055  **/
13056 static void
lpfc_io_resume_s4(struct pci_dev * pdev)13057 lpfc_io_resume_s4(struct pci_dev *pdev)
13058 {
13059 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
13060 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13061 
13062 	/*
13063 	 * In case of slot reset, as function reset is performed through
13064 	 * mailbox command which needs DMA to be enabled, this operation
13065 	 * has to be moved to the io resume phase. Taking device offline
13066 	 * will perform the necessary cleanup.
13067 	 */
13068 	if (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)) {
13069 		/* Perform device reset */
13070 		lpfc_offline_prep(phba, LPFC_MBX_WAIT);
13071 		lpfc_offline(phba);
13072 		lpfc_sli_brdrestart(phba);
13073 		/* Bring the device back online */
13074 		lpfc_online(phba);
13075 	}
13076 }
13077 
13078 /**
13079  * lpfc_pci_probe_one - lpfc PCI probe func to reg dev to PCI subsystem
13080  * @pdev: pointer to PCI device
13081  * @pid: pointer to PCI device identifier
13082  *
13083  * This routine is to be registered to the kernel's PCI subsystem. When an
13084  * Emulex HBA device is presented on PCI bus, the kernel PCI subsystem looks
13085  * at PCI device-specific information of the device and driver to see if the
13086  * driver state that it can support this kind of device. If the match is
13087  * successful, the driver core invokes this routine. This routine dispatches
13088  * the action to the proper SLI-3 or SLI-4 device probing routine, which will
13089  * do all the initialization that it needs to do to handle the HBA device
13090  * properly.
13091  *
13092  * Return code
13093  * 	0 - driver can claim the device
13094  * 	negative value - driver can not claim the device
13095  **/
13096 static int
lpfc_pci_probe_one(struct pci_dev * pdev,const struct pci_device_id * pid)13097 lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
13098 {
13099 	int rc;
13100 	struct lpfc_sli_intf intf;
13101 
13102 	if (pci_read_config_dword(pdev, LPFC_SLI_INTF, &intf.word0))
13103 		return -ENODEV;
13104 
13105 	if ((bf_get(lpfc_sli_intf_valid, &intf) == LPFC_SLI_INTF_VALID) &&
13106 	    (bf_get(lpfc_sli_intf_slirev, &intf) == LPFC_SLI_INTF_REV_SLI4))
13107 		rc = lpfc_pci_probe_one_s4(pdev, pid);
13108 	else
13109 		rc = lpfc_pci_probe_one_s3(pdev, pid);
13110 
13111 	return rc;
13112 }
13113 
13114 /**
13115  * lpfc_pci_remove_one - lpfc PCI func to unreg dev from PCI subsystem
13116  * @pdev: pointer to PCI device
13117  *
13118  * This routine is to be registered to the kernel's PCI subsystem. When an
13119  * Emulex HBA is removed from PCI bus, the driver core invokes this routine.
13120  * This routine dispatches the action to the proper SLI-3 or SLI-4 device
13121  * remove routine, which will perform all the necessary cleanup for the
13122  * device to be removed from the PCI subsystem properly.
13123  **/
13124 static void
lpfc_pci_remove_one(struct pci_dev * pdev)13125 lpfc_pci_remove_one(struct pci_dev *pdev)
13126 {
13127 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
13128 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13129 
13130 	switch (phba->pci_dev_grp) {
13131 	case LPFC_PCI_DEV_LP:
13132 		lpfc_pci_remove_one_s3(pdev);
13133 		break;
13134 	case LPFC_PCI_DEV_OC:
13135 		lpfc_pci_remove_one_s4(pdev);
13136 		break;
13137 	default:
13138 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13139 				"1424 Invalid PCI device group: 0x%x\n",
13140 				phba->pci_dev_grp);
13141 		break;
13142 	}
13143 	return;
13144 }
13145 
13146 /**
13147  * lpfc_pci_suspend_one - lpfc PCI func to suspend dev for power management
13148  * @pdev: pointer to PCI device
13149  * @msg: power management message
13150  *
13151  * This routine is to be registered to the kernel's PCI subsystem to support
13152  * system Power Management (PM). When PM invokes this method, it dispatches
13153  * the action to the proper SLI-3 or SLI-4 device suspend routine, which will
13154  * suspend the device.
13155  *
13156  * Return code
13157  * 	0 - driver suspended the device
13158  * 	Error otherwise
13159  **/
13160 static int
lpfc_pci_suspend_one(struct pci_dev * pdev,pm_message_t msg)13161 lpfc_pci_suspend_one(struct pci_dev *pdev, pm_message_t msg)
13162 {
13163 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
13164 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13165 	int rc = -ENODEV;
13166 
13167 	switch (phba->pci_dev_grp) {
13168 	case LPFC_PCI_DEV_LP:
13169 		rc = lpfc_pci_suspend_one_s3(pdev, msg);
13170 		break;
13171 	case LPFC_PCI_DEV_OC:
13172 		rc = lpfc_pci_suspend_one_s4(pdev, msg);
13173 		break;
13174 	default:
13175 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13176 				"1425 Invalid PCI device group: 0x%x\n",
13177 				phba->pci_dev_grp);
13178 		break;
13179 	}
13180 	return rc;
13181 }
13182 
13183 /**
13184  * lpfc_pci_resume_one - lpfc PCI func to resume dev for power management
13185  * @pdev: pointer to PCI device
13186  *
13187  * This routine is to be registered to the kernel's PCI subsystem to support
13188  * system Power Management (PM). When PM invokes this method, it dispatches
13189  * the action to the proper SLI-3 or SLI-4 device resume routine, which will
13190  * resume the device.
13191  *
13192  * Return code
13193  * 	0 - driver suspended the device
13194  * 	Error otherwise
13195  **/
13196 static int
lpfc_pci_resume_one(struct pci_dev * pdev)13197 lpfc_pci_resume_one(struct pci_dev *pdev)
13198 {
13199 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
13200 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13201 	int rc = -ENODEV;
13202 
13203 	switch (phba->pci_dev_grp) {
13204 	case LPFC_PCI_DEV_LP:
13205 		rc = lpfc_pci_resume_one_s3(pdev);
13206 		break;
13207 	case LPFC_PCI_DEV_OC:
13208 		rc = lpfc_pci_resume_one_s4(pdev);
13209 		break;
13210 	default:
13211 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13212 				"1426 Invalid PCI device group: 0x%x\n",
13213 				phba->pci_dev_grp);
13214 		break;
13215 	}
13216 	return rc;
13217 }
13218 
13219 /**
13220  * lpfc_io_error_detected - lpfc method for handling PCI I/O error
13221  * @pdev: pointer to PCI device.
13222  * @state: the current PCI connection state.
13223  *
13224  * This routine is registered to the PCI subsystem for error handling. This
13225  * function is called by the PCI subsystem after a PCI bus error affecting
13226  * this device has been detected. When this routine is invoked, it dispatches
13227  * the action to the proper SLI-3 or SLI-4 device error detected handling
13228  * routine, which will perform the proper error detected operation.
13229  *
13230  * Return codes
13231  * 	PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
13232  * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered
13233  **/
13234 static pci_ers_result_t
lpfc_io_error_detected(struct pci_dev * pdev,pci_channel_state_t state)13235 lpfc_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
13236 {
13237 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
13238 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13239 	pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
13240 
13241 	switch (phba->pci_dev_grp) {
13242 	case LPFC_PCI_DEV_LP:
13243 		rc = lpfc_io_error_detected_s3(pdev, state);
13244 		break;
13245 	case LPFC_PCI_DEV_OC:
13246 		rc = lpfc_io_error_detected_s4(pdev, state);
13247 		break;
13248 	default:
13249 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13250 				"1427 Invalid PCI device group: 0x%x\n",
13251 				phba->pci_dev_grp);
13252 		break;
13253 	}
13254 	return rc;
13255 }
13256 
13257 /**
13258  * lpfc_io_slot_reset - lpfc method for restart PCI dev from scratch
13259  * @pdev: pointer to PCI device.
13260  *
13261  * This routine is registered to the PCI subsystem for error handling. This
13262  * function is called after PCI bus has been reset to restart the PCI card
13263  * from scratch, as if from a cold-boot. When this routine is invoked, it
13264  * dispatches the action to the proper SLI-3 or SLI-4 device reset handling
13265  * routine, which will perform the proper device reset.
13266  *
13267  * Return codes
13268  * 	PCI_ERS_RESULT_RECOVERED - the device has been recovered
13269  * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered
13270  **/
13271 static pci_ers_result_t
lpfc_io_slot_reset(struct pci_dev * pdev)13272 lpfc_io_slot_reset(struct pci_dev *pdev)
13273 {
13274 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
13275 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13276 	pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
13277 
13278 	switch (phba->pci_dev_grp) {
13279 	case LPFC_PCI_DEV_LP:
13280 		rc = lpfc_io_slot_reset_s3(pdev);
13281 		break;
13282 	case LPFC_PCI_DEV_OC:
13283 		rc = lpfc_io_slot_reset_s4(pdev);
13284 		break;
13285 	default:
13286 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13287 				"1428 Invalid PCI device group: 0x%x\n",
13288 				phba->pci_dev_grp);
13289 		break;
13290 	}
13291 	return rc;
13292 }
13293 
13294 /**
13295  * lpfc_io_resume - lpfc method for resuming PCI I/O operation
13296  * @pdev: pointer to PCI device
13297  *
13298  * This routine is registered to the PCI subsystem for error handling. It
13299  * is called when kernel error recovery tells the lpfc driver that it is
13300  * OK to resume normal PCI operation after PCI bus error recovery. When
13301  * this routine is invoked, it dispatches the action to the proper SLI-3
13302  * or SLI-4 device io_resume routine, which will resume the device operation.
13303  **/
13304 static void
lpfc_io_resume(struct pci_dev * pdev)13305 lpfc_io_resume(struct pci_dev *pdev)
13306 {
13307 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
13308 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13309 
13310 	switch (phba->pci_dev_grp) {
13311 	case LPFC_PCI_DEV_LP:
13312 		lpfc_io_resume_s3(pdev);
13313 		break;
13314 	case LPFC_PCI_DEV_OC:
13315 		lpfc_io_resume_s4(pdev);
13316 		break;
13317 	default:
13318 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13319 				"1429 Invalid PCI device group: 0x%x\n",
13320 				phba->pci_dev_grp);
13321 		break;
13322 	}
13323 	return;
13324 }
13325 
13326 /**
13327  * lpfc_sli4_oas_verify - Verify OAS is supported by this adapter
13328  * @phba: pointer to lpfc hba data structure.
13329  *
13330  * This routine checks to see if OAS is supported for this adapter. If
13331  * supported, the configure Flash Optimized Fabric flag is set.  Otherwise,
13332  * the enable oas flag is cleared and the pool created for OAS device data
13333  * is destroyed.
13334  *
13335  **/
13336 static void
lpfc_sli4_oas_verify(struct lpfc_hba * phba)13337 lpfc_sli4_oas_verify(struct lpfc_hba *phba)
13338 {
13339 
13340 	if (!phba->cfg_EnableXLane)
13341 		return;
13342 
13343 	if (phba->sli4_hba.pc_sli4_params.oas_supported) {
13344 		phba->cfg_fof = 1;
13345 	} else {
13346 		phba->cfg_fof = 0;
13347 		if (phba->device_data_mem_pool)
13348 			mempool_destroy(phba->device_data_mem_pool);
13349 		phba->device_data_mem_pool = NULL;
13350 	}
13351 
13352 	return;
13353 }
13354 
13355 /**
13356  * lpfc_sli4_ras_init - Verify RAS-FW log is supported by this adapter
13357  * @phba: pointer to lpfc hba data structure.
13358  *
13359  * This routine checks to see if RAS is supported by the adapter. Check the
13360  * function through which RAS support enablement is to be done.
13361  **/
13362 void
lpfc_sli4_ras_init(struct lpfc_hba * phba)13363 lpfc_sli4_ras_init(struct lpfc_hba *phba)
13364 {
13365 	switch (phba->pcidev->device) {
13366 	case PCI_DEVICE_ID_LANCER_G6_FC:
13367 	case PCI_DEVICE_ID_LANCER_G7_FC:
13368 		phba->ras_fwlog.ras_hwsupport = true;
13369 		if (phba->cfg_ras_fwlog_func == PCI_FUNC(phba->pcidev->devfn) &&
13370 		    phba->cfg_ras_fwlog_buffsize)
13371 			phba->ras_fwlog.ras_enabled = true;
13372 		else
13373 			phba->ras_fwlog.ras_enabled = false;
13374 		break;
13375 	default:
13376 		phba->ras_fwlog.ras_hwsupport = false;
13377 	}
13378 }
13379 
13380 
13381 MODULE_DEVICE_TABLE(pci, lpfc_id_table);
13382 
13383 static const struct pci_error_handlers lpfc_err_handler = {
13384 	.error_detected = lpfc_io_error_detected,
13385 	.slot_reset = lpfc_io_slot_reset,
13386 	.resume = lpfc_io_resume,
13387 };
13388 
13389 static struct pci_driver lpfc_driver = {
13390 	.name		= LPFC_DRIVER_NAME,
13391 	.id_table	= lpfc_id_table,
13392 	.probe		= lpfc_pci_probe_one,
13393 	.remove		= lpfc_pci_remove_one,
13394 	.shutdown	= lpfc_pci_remove_one,
13395 	.suspend        = lpfc_pci_suspend_one,
13396 	.resume		= lpfc_pci_resume_one,
13397 	.err_handler    = &lpfc_err_handler,
13398 };
13399 
13400 static const struct file_operations lpfc_mgmt_fop = {
13401 	.owner = THIS_MODULE,
13402 };
13403 
13404 static struct miscdevice lpfc_mgmt_dev = {
13405 	.minor = MISC_DYNAMIC_MINOR,
13406 	.name = "lpfcmgmt",
13407 	.fops = &lpfc_mgmt_fop,
13408 };
13409 
13410 /**
13411  * lpfc_init - lpfc module initialization routine
13412  *
13413  * This routine is to be invoked when the lpfc module is loaded into the
13414  * kernel. The special kernel macro module_init() is used to indicate the
13415  * role of this routine to the kernel as lpfc module entry point.
13416  *
13417  * Return codes
13418  *   0 - successful
13419  *   -ENOMEM - FC attach transport failed
13420  *   all others - failed
13421  */
13422 static int __init
lpfc_init(void)13423 lpfc_init(void)
13424 {
13425 	int error = 0;
13426 
13427 	printk(LPFC_MODULE_DESC "\n");
13428 	printk(LPFC_COPYRIGHT "\n");
13429 
13430 	error = misc_register(&lpfc_mgmt_dev);
13431 	if (error)
13432 		printk(KERN_ERR "Could not register lpfcmgmt device, "
13433 			"misc_register returned with status %d", error);
13434 
13435 	lpfc_transport_functions.vport_create = lpfc_vport_create;
13436 	lpfc_transport_functions.vport_delete = lpfc_vport_delete;
13437 	lpfc_transport_template =
13438 				fc_attach_transport(&lpfc_transport_functions);
13439 	if (lpfc_transport_template == NULL)
13440 		return -ENOMEM;
13441 	lpfc_vport_transport_template =
13442 		fc_attach_transport(&lpfc_vport_transport_functions);
13443 	if (lpfc_vport_transport_template == NULL) {
13444 		fc_release_transport(lpfc_transport_template);
13445 		return -ENOMEM;
13446 	}
13447 	lpfc_nvme_cmd_template();
13448 	lpfc_nvmet_cmd_template();
13449 
13450 	/* Initialize in case vector mapping is needed */
13451 	lpfc_present_cpu = num_present_cpus();
13452 
13453 	error = pci_register_driver(&lpfc_driver);
13454 	if (error) {
13455 		fc_release_transport(lpfc_transport_template);
13456 		fc_release_transport(lpfc_vport_transport_template);
13457 	}
13458 
13459 	return error;
13460 }
13461 
13462 /**
13463  * lpfc_exit - lpfc module removal routine
13464  *
13465  * This routine is invoked when the lpfc module is removed from the kernel.
13466  * The special kernel macro module_exit() is used to indicate the role of
13467  * this routine to the kernel as lpfc module exit point.
13468  */
13469 static void __exit
lpfc_exit(void)13470 lpfc_exit(void)
13471 {
13472 	misc_deregister(&lpfc_mgmt_dev);
13473 	pci_unregister_driver(&lpfc_driver);
13474 	fc_release_transport(lpfc_transport_template);
13475 	fc_release_transport(lpfc_vport_transport_template);
13476 	idr_destroy(&lpfc_hba_index);
13477 }
13478 
13479 module_init(lpfc_init);
13480 module_exit(lpfc_exit);
13481 MODULE_LICENSE("GPL");
13482 MODULE_DESCRIPTION(LPFC_MODULE_DESC);
13483 MODULE_AUTHOR("Broadcom");
13484 MODULE_VERSION("0:" LPFC_DRIVER_VERSION);
13485