1 /*
2 * This file is part of the Emulex Linux Device Driver for Enterprise iSCSI
3 * Host Bus Adapters. Refer to the README file included with this package
4 * for driver version and adapter compatibility.
5 *
6 * Copyright (c) 2018 Broadcom. All Rights Reserved.
7 * The term “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of version 2 of the GNU General Public License as published
11 * by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful. ALL EXPRESS
14 * OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
15 * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
16 * OR NON-INFRINGEMENT, ARE DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH
17 * DISCLAIMERS ARE HELD TO BE LEGALLY INVALID.
18 * See the GNU General Public License for more details, a copy of which
19 * can be found in the file COPYING included with this package.
20 *
21 * Contact Information:
22 * linux-drivers@broadcom.com
23 *
24 */
25
26 #include <linux/reboot.h>
27 #include <linux/delay.h>
28 #include <linux/slab.h>
29 #include <linux/interrupt.h>
30 #include <linux/blkdev.h>
31 #include <linux/pci.h>
32 #include <linux/string.h>
33 #include <linux/kernel.h>
34 #include <linux/semaphore.h>
35 #include <linux/iscsi_boot_sysfs.h>
36 #include <linux/module.h>
37 #include <linux/bsg-lib.h>
38 #include <linux/irq_poll.h>
39
40 #include <scsi/libiscsi.h>
41 #include <scsi/scsi_bsg_iscsi.h>
42 #include <scsi/scsi_netlink.h>
43 #include <scsi/scsi_transport_iscsi.h>
44 #include <scsi/scsi_transport.h>
45 #include <scsi/scsi_cmnd.h>
46 #include <scsi/scsi_device.h>
47 #include <scsi/scsi_host.h>
48 #include <scsi/scsi.h>
49 #include "be_main.h"
50 #include "be_iscsi.h"
51 #include "be_mgmt.h"
52 #include "be_cmds.h"
53
54 static unsigned int be_iopoll_budget = 10;
55 static unsigned int be_max_phys_size = 64;
56 static unsigned int enable_msix = 1;
57
58 MODULE_DESCRIPTION(DRV_DESC " " BUILD_STR);
59 MODULE_VERSION(BUILD_STR);
60 MODULE_AUTHOR("Emulex Corporation");
61 MODULE_LICENSE("GPL");
62 module_param(be_iopoll_budget, int, 0);
63 module_param(enable_msix, int, 0);
64 module_param(be_max_phys_size, uint, S_IRUGO);
65 MODULE_PARM_DESC(be_max_phys_size,
66 "Maximum Size (In Kilobytes) of physically contiguous "
67 "memory that can be allocated. Range is 16 - 128");
68
69 #define beiscsi_disp_param(_name)\
70 static ssize_t \
71 beiscsi_##_name##_disp(struct device *dev,\
72 struct device_attribute *attrib, char *buf) \
73 { \
74 struct Scsi_Host *shost = class_to_shost(dev);\
75 struct beiscsi_hba *phba = iscsi_host_priv(shost); \
76 return snprintf(buf, PAGE_SIZE, "%d\n",\
77 phba->attr_##_name);\
78 }
79
80 #define beiscsi_change_param(_name, _minval, _maxval, _defaval)\
81 static int \
82 beiscsi_##_name##_change(struct beiscsi_hba *phba, uint32_t val)\
83 {\
84 if (val >= _minval && val <= _maxval) {\
85 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,\
86 "BA_%d : beiscsi_"#_name" updated "\
87 "from 0x%x ==> 0x%x\n",\
88 phba->attr_##_name, val); \
89 phba->attr_##_name = val;\
90 return 0;\
91 } \
92 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, \
93 "BA_%d beiscsi_"#_name" attribute "\
94 "cannot be updated to 0x%x, "\
95 "range allowed is ["#_minval" - "#_maxval"]\n", val);\
96 return -EINVAL;\
97 }
98
99 #define beiscsi_store_param(_name) \
100 static ssize_t \
101 beiscsi_##_name##_store(struct device *dev,\
102 struct device_attribute *attr, const char *buf,\
103 size_t count) \
104 { \
105 struct Scsi_Host *shost = class_to_shost(dev);\
106 struct beiscsi_hba *phba = iscsi_host_priv(shost);\
107 uint32_t param_val = 0;\
108 if (!isdigit(buf[0]))\
109 return -EINVAL;\
110 if (sscanf(buf, "%i", ¶m_val) != 1)\
111 return -EINVAL;\
112 if (beiscsi_##_name##_change(phba, param_val) == 0) \
113 return strlen(buf);\
114 else \
115 return -EINVAL;\
116 }
117
118 #define beiscsi_init_param(_name, _minval, _maxval, _defval) \
119 static int \
120 beiscsi_##_name##_init(struct beiscsi_hba *phba, uint32_t val) \
121 { \
122 if (val >= _minval && val <= _maxval) {\
123 phba->attr_##_name = val;\
124 return 0;\
125 } \
126 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,\
127 "BA_%d beiscsi_"#_name" attribute " \
128 "cannot be updated to 0x%x, "\
129 "range allowed is ["#_minval" - "#_maxval"]\n", val);\
130 phba->attr_##_name = _defval;\
131 return -EINVAL;\
132 }
133
134 #define BEISCSI_RW_ATTR(_name, _minval, _maxval, _defval, _descp) \
135 static uint beiscsi_##_name = _defval;\
136 module_param(beiscsi_##_name, uint, S_IRUGO);\
137 MODULE_PARM_DESC(beiscsi_##_name, _descp);\
138 beiscsi_disp_param(_name)\
139 beiscsi_change_param(_name, _minval, _maxval, _defval)\
140 beiscsi_store_param(_name)\
141 beiscsi_init_param(_name, _minval, _maxval, _defval)\
142 DEVICE_ATTR(beiscsi_##_name, S_IRUGO | S_IWUSR,\
143 beiscsi_##_name##_disp, beiscsi_##_name##_store)
144
145 /*
146 * When new log level added update the
147 * the MAX allowed value for log_enable
148 */
149 BEISCSI_RW_ATTR(log_enable, 0x00,
150 0xFF, 0x00, "Enable logging Bit Mask\n"
151 "\t\t\t\tInitialization Events : 0x01\n"
152 "\t\t\t\tMailbox Events : 0x02\n"
153 "\t\t\t\tMiscellaneous Events : 0x04\n"
154 "\t\t\t\tError Handling : 0x08\n"
155 "\t\t\t\tIO Path Events : 0x10\n"
156 "\t\t\t\tConfiguration Path : 0x20\n"
157 "\t\t\t\tiSCSI Protocol : 0x40\n");
158
159 DEVICE_ATTR(beiscsi_drvr_ver, S_IRUGO, beiscsi_drvr_ver_disp, NULL);
160 DEVICE_ATTR(beiscsi_adapter_family, S_IRUGO, beiscsi_adap_family_disp, NULL);
161 DEVICE_ATTR(beiscsi_fw_ver, S_IRUGO, beiscsi_fw_ver_disp, NULL);
162 DEVICE_ATTR(beiscsi_phys_port, S_IRUGO, beiscsi_phys_port_disp, NULL);
163 DEVICE_ATTR(beiscsi_active_session_count, S_IRUGO,
164 beiscsi_active_session_disp, NULL);
165 DEVICE_ATTR(beiscsi_free_session_count, S_IRUGO,
166 beiscsi_free_session_disp, NULL);
167 struct device_attribute *beiscsi_attrs[] = {
168 &dev_attr_beiscsi_log_enable,
169 &dev_attr_beiscsi_drvr_ver,
170 &dev_attr_beiscsi_adapter_family,
171 &dev_attr_beiscsi_fw_ver,
172 &dev_attr_beiscsi_active_session_count,
173 &dev_attr_beiscsi_free_session_count,
174 &dev_attr_beiscsi_phys_port,
175 NULL,
176 };
177
178 static char const *cqe_desc[] = {
179 "RESERVED_DESC",
180 "SOL_CMD_COMPLETE",
181 "SOL_CMD_KILLED_DATA_DIGEST_ERR",
182 "CXN_KILLED_PDU_SIZE_EXCEEDS_DSL",
183 "CXN_KILLED_BURST_LEN_MISMATCH",
184 "CXN_KILLED_AHS_RCVD",
185 "CXN_KILLED_HDR_DIGEST_ERR",
186 "CXN_KILLED_UNKNOWN_HDR",
187 "CXN_KILLED_STALE_ITT_TTT_RCVD",
188 "CXN_KILLED_INVALID_ITT_TTT_RCVD",
189 "CXN_KILLED_RST_RCVD",
190 "CXN_KILLED_TIMED_OUT",
191 "CXN_KILLED_RST_SENT",
192 "CXN_KILLED_FIN_RCVD",
193 "CXN_KILLED_BAD_UNSOL_PDU_RCVD",
194 "CXN_KILLED_BAD_WRB_INDEX_ERROR",
195 "CXN_KILLED_OVER_RUN_RESIDUAL",
196 "CXN_KILLED_UNDER_RUN_RESIDUAL",
197 "CMD_KILLED_INVALID_STATSN_RCVD",
198 "CMD_KILLED_INVALID_R2T_RCVD",
199 "CMD_CXN_KILLED_LUN_INVALID",
200 "CMD_CXN_KILLED_ICD_INVALID",
201 "CMD_CXN_KILLED_ITT_INVALID",
202 "CMD_CXN_KILLED_SEQ_OUTOFORDER",
203 "CMD_CXN_KILLED_INVALID_DATASN_RCVD",
204 "CXN_INVALIDATE_NOTIFY",
205 "CXN_INVALIDATE_INDEX_NOTIFY",
206 "CMD_INVALIDATED_NOTIFY",
207 "UNSOL_HDR_NOTIFY",
208 "UNSOL_DATA_NOTIFY",
209 "UNSOL_DATA_DIGEST_ERROR_NOTIFY",
210 "DRIVERMSG_NOTIFY",
211 "CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN",
212 "SOL_CMD_KILLED_DIF_ERR",
213 "CXN_KILLED_SYN_RCVD",
214 "CXN_KILLED_IMM_DATA_RCVD"
215 };
216
beiscsi_eh_abort(struct scsi_cmnd * sc)217 static int beiscsi_eh_abort(struct scsi_cmnd *sc)
218 {
219 struct iscsi_task *abrt_task = (struct iscsi_task *)sc->SCp.ptr;
220 struct iscsi_cls_session *cls_session;
221 struct beiscsi_io_task *abrt_io_task;
222 struct beiscsi_conn *beiscsi_conn;
223 struct iscsi_session *session;
224 struct invldt_cmd_tbl inv_tbl;
225 struct beiscsi_hba *phba;
226 struct iscsi_conn *conn;
227 int rc;
228
229 cls_session = starget_to_session(scsi_target(sc->device));
230 session = cls_session->dd_data;
231
232 /* check if we raced, task just got cleaned up under us */
233 spin_lock_bh(&session->back_lock);
234 if (!abrt_task || !abrt_task->sc) {
235 spin_unlock_bh(&session->back_lock);
236 return SUCCESS;
237 }
238 /* get a task ref till FW processes the req for the ICD used */
239 __iscsi_get_task(abrt_task);
240 abrt_io_task = abrt_task->dd_data;
241 conn = abrt_task->conn;
242 beiscsi_conn = conn->dd_data;
243 phba = beiscsi_conn->phba;
244 /* mark WRB invalid which have been not processed by FW yet */
245 if (is_chip_be2_be3r(phba)) {
246 AMAP_SET_BITS(struct amap_iscsi_wrb, invld,
247 abrt_io_task->pwrb_handle->pwrb, 1);
248 } else {
249 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, invld,
250 abrt_io_task->pwrb_handle->pwrb, 1);
251 }
252 inv_tbl.cid = beiscsi_conn->beiscsi_conn_cid;
253 inv_tbl.icd = abrt_io_task->psgl_handle->sgl_index;
254 spin_unlock_bh(&session->back_lock);
255
256 rc = beiscsi_mgmt_invalidate_icds(phba, &inv_tbl, 1);
257 iscsi_put_task(abrt_task);
258 if (rc) {
259 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_EH,
260 "BM_%d : sc %p invalidation failed %d\n",
261 sc, rc);
262 return FAILED;
263 }
264
265 return iscsi_eh_abort(sc);
266 }
267
beiscsi_eh_device_reset(struct scsi_cmnd * sc)268 static int beiscsi_eh_device_reset(struct scsi_cmnd *sc)
269 {
270 struct beiscsi_invldt_cmd_tbl {
271 struct invldt_cmd_tbl tbl[BE_INVLDT_CMD_TBL_SZ];
272 struct iscsi_task *task[BE_INVLDT_CMD_TBL_SZ];
273 } *inv_tbl;
274 struct iscsi_cls_session *cls_session;
275 struct beiscsi_conn *beiscsi_conn;
276 struct beiscsi_io_task *io_task;
277 struct iscsi_session *session;
278 struct beiscsi_hba *phba;
279 struct iscsi_conn *conn;
280 struct iscsi_task *task;
281 unsigned int i, nents;
282 int rc, more = 0;
283
284 cls_session = starget_to_session(scsi_target(sc->device));
285 session = cls_session->dd_data;
286
287 spin_lock_bh(&session->frwd_lock);
288 if (!session->leadconn || session->state != ISCSI_STATE_LOGGED_IN) {
289 spin_unlock_bh(&session->frwd_lock);
290 return FAILED;
291 }
292
293 conn = session->leadconn;
294 beiscsi_conn = conn->dd_data;
295 phba = beiscsi_conn->phba;
296
297 inv_tbl = kzalloc(sizeof(*inv_tbl), GFP_ATOMIC);
298 if (!inv_tbl) {
299 spin_unlock_bh(&session->frwd_lock);
300 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_EH,
301 "BM_%d : invldt_cmd_tbl alloc failed\n");
302 return FAILED;
303 }
304 nents = 0;
305 /* take back_lock to prevent task from getting cleaned up under us */
306 spin_lock(&session->back_lock);
307 for (i = 0; i < conn->session->cmds_max; i++) {
308 task = conn->session->cmds[i];
309 if (!task->sc)
310 continue;
311
312 if (sc->device->lun != task->sc->device->lun)
313 continue;
314 /**
315 * Can't fit in more cmds? Normally this won't happen b'coz
316 * BEISCSI_CMD_PER_LUN is same as BE_INVLDT_CMD_TBL_SZ.
317 */
318 if (nents == BE_INVLDT_CMD_TBL_SZ) {
319 more = 1;
320 break;
321 }
322
323 /* get a task ref till FW processes the req for the ICD used */
324 __iscsi_get_task(task);
325 io_task = task->dd_data;
326 /* mark WRB invalid which have been not processed by FW yet */
327 if (is_chip_be2_be3r(phba)) {
328 AMAP_SET_BITS(struct amap_iscsi_wrb, invld,
329 io_task->pwrb_handle->pwrb, 1);
330 } else {
331 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, invld,
332 io_task->pwrb_handle->pwrb, 1);
333 }
334
335 inv_tbl->tbl[nents].cid = beiscsi_conn->beiscsi_conn_cid;
336 inv_tbl->tbl[nents].icd = io_task->psgl_handle->sgl_index;
337 inv_tbl->task[nents] = task;
338 nents++;
339 }
340 spin_unlock(&session->back_lock);
341 spin_unlock_bh(&session->frwd_lock);
342
343 rc = SUCCESS;
344 if (!nents)
345 goto end_reset;
346
347 if (more) {
348 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_EH,
349 "BM_%d : number of cmds exceeds size of invalidation table\n");
350 rc = FAILED;
351 goto end_reset;
352 }
353
354 if (beiscsi_mgmt_invalidate_icds(phba, &inv_tbl->tbl[0], nents)) {
355 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_EH,
356 "BM_%d : cid %u scmds invalidation failed\n",
357 beiscsi_conn->beiscsi_conn_cid);
358 rc = FAILED;
359 }
360
361 end_reset:
362 for (i = 0; i < nents; i++)
363 iscsi_put_task(inv_tbl->task[i]);
364 kfree(inv_tbl);
365
366 if (rc == SUCCESS)
367 rc = iscsi_eh_device_reset(sc);
368 return rc;
369 }
370
371 /*------------------- PCI Driver operations and data ----------------- */
372 static const struct pci_device_id beiscsi_pci_id_table[] = {
373 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
374 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
375 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
376 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
377 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID3) },
378 { PCI_DEVICE(ELX_VENDOR_ID, OC_SKH_ID1) },
379 { 0 }
380 };
381 MODULE_DEVICE_TABLE(pci, beiscsi_pci_id_table);
382
383
384 static struct scsi_host_template beiscsi_sht = {
385 .module = THIS_MODULE,
386 .name = "Emulex 10Gbe open-iscsi Initiator Driver",
387 .proc_name = DRV_NAME,
388 .queuecommand = iscsi_queuecommand,
389 .change_queue_depth = scsi_change_queue_depth,
390 .target_alloc = iscsi_target_alloc,
391 .eh_timed_out = iscsi_eh_cmd_timed_out,
392 .eh_abort_handler = beiscsi_eh_abort,
393 .eh_device_reset_handler = beiscsi_eh_device_reset,
394 .eh_target_reset_handler = iscsi_eh_session_reset,
395 .shost_attrs = beiscsi_attrs,
396 .sg_tablesize = BEISCSI_SGLIST_ELEMENTS,
397 .can_queue = BE2_IO_DEPTH,
398 .this_id = -1,
399 .max_sectors = BEISCSI_MAX_SECTORS,
400 .max_segment_size = 65536,
401 .cmd_per_lun = BEISCSI_CMD_PER_LUN,
402 .vendor_id = SCSI_NL_VID_TYPE_PCI | BE_VENDOR_ID,
403 .track_queue_depth = 1,
404 };
405
406 static struct scsi_transport_template *beiscsi_scsi_transport;
407
beiscsi_hba_alloc(struct pci_dev * pcidev)408 static struct beiscsi_hba *beiscsi_hba_alloc(struct pci_dev *pcidev)
409 {
410 struct beiscsi_hba *phba;
411 struct Scsi_Host *shost;
412
413 shost = iscsi_host_alloc(&beiscsi_sht, sizeof(*phba), 0);
414 if (!shost) {
415 dev_err(&pcidev->dev,
416 "beiscsi_hba_alloc - iscsi_host_alloc failed\n");
417 return NULL;
418 }
419 shost->max_id = BE2_MAX_SESSIONS;
420 shost->max_channel = 0;
421 shost->max_cmd_len = BEISCSI_MAX_CMD_LEN;
422 shost->max_lun = BEISCSI_NUM_MAX_LUN;
423 shost->transportt = beiscsi_scsi_transport;
424 phba = iscsi_host_priv(shost);
425 memset(phba, 0, sizeof(*phba));
426 phba->shost = shost;
427 phba->pcidev = pci_dev_get(pcidev);
428 pci_set_drvdata(pcidev, phba);
429 phba->interface_handle = 0xFFFFFFFF;
430
431 return phba;
432 }
433
beiscsi_unmap_pci_function(struct beiscsi_hba * phba)434 static void beiscsi_unmap_pci_function(struct beiscsi_hba *phba)
435 {
436 if (phba->csr_va) {
437 iounmap(phba->csr_va);
438 phba->csr_va = NULL;
439 }
440 if (phba->db_va) {
441 iounmap(phba->db_va);
442 phba->db_va = NULL;
443 }
444 if (phba->pci_va) {
445 iounmap(phba->pci_va);
446 phba->pci_va = NULL;
447 }
448 }
449
beiscsi_map_pci_bars(struct beiscsi_hba * phba,struct pci_dev * pcidev)450 static int beiscsi_map_pci_bars(struct beiscsi_hba *phba,
451 struct pci_dev *pcidev)
452 {
453 u8 __iomem *addr;
454 int pcicfg_reg;
455
456 addr = ioremap(pci_resource_start(pcidev, 2),
457 pci_resource_len(pcidev, 2));
458 if (addr == NULL)
459 return -ENOMEM;
460 phba->ctrl.csr = addr;
461 phba->csr_va = addr;
462
463 addr = ioremap(pci_resource_start(pcidev, 4), 128 * 1024);
464 if (addr == NULL)
465 goto pci_map_err;
466 phba->ctrl.db = addr;
467 phba->db_va = addr;
468
469 if (phba->generation == BE_GEN2)
470 pcicfg_reg = 1;
471 else
472 pcicfg_reg = 0;
473
474 addr = ioremap(pci_resource_start(pcidev, pcicfg_reg),
475 pci_resource_len(pcidev, pcicfg_reg));
476
477 if (addr == NULL)
478 goto pci_map_err;
479 phba->ctrl.pcicfg = addr;
480 phba->pci_va = addr;
481 return 0;
482
483 pci_map_err:
484 beiscsi_unmap_pci_function(phba);
485 return -ENOMEM;
486 }
487
beiscsi_enable_pci(struct pci_dev * pcidev)488 static int beiscsi_enable_pci(struct pci_dev *pcidev)
489 {
490 int ret;
491
492 ret = pci_enable_device(pcidev);
493 if (ret) {
494 dev_err(&pcidev->dev,
495 "beiscsi_enable_pci - enable device failed\n");
496 return ret;
497 }
498
499 ret = pci_request_regions(pcidev, DRV_NAME);
500 if (ret) {
501 dev_err(&pcidev->dev,
502 "beiscsi_enable_pci - request region failed\n");
503 goto pci_dev_disable;
504 }
505
506 pci_set_master(pcidev);
507 ret = dma_set_mask_and_coherent(&pcidev->dev, DMA_BIT_MASK(64));
508 if (ret) {
509 ret = dma_set_mask_and_coherent(&pcidev->dev, DMA_BIT_MASK(32));
510 if (ret) {
511 dev_err(&pcidev->dev, "Could not set PCI DMA Mask\n");
512 goto pci_region_release;
513 }
514 }
515 return 0;
516
517 pci_region_release:
518 pci_release_regions(pcidev);
519 pci_dev_disable:
520 pci_disable_device(pcidev);
521
522 return ret;
523 }
524
be_ctrl_init(struct beiscsi_hba * phba,struct pci_dev * pdev)525 static int be_ctrl_init(struct beiscsi_hba *phba, struct pci_dev *pdev)
526 {
527 struct be_ctrl_info *ctrl = &phba->ctrl;
528 struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
529 struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
530 int status = 0;
531
532 ctrl->pdev = pdev;
533 status = beiscsi_map_pci_bars(phba, pdev);
534 if (status)
535 return status;
536 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
537 mbox_mem_alloc->va = dma_alloc_coherent(&pdev->dev,
538 mbox_mem_alloc->size, &mbox_mem_alloc->dma, GFP_KERNEL);
539 if (!mbox_mem_alloc->va) {
540 beiscsi_unmap_pci_function(phba);
541 return -ENOMEM;
542 }
543
544 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
545 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
546 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
547 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
548 mutex_init(&ctrl->mbox_lock);
549 spin_lock_init(&phba->ctrl.mcc_lock);
550
551 return status;
552 }
553
554 /**
555 * beiscsi_get_params()- Set the config paramters
556 * @phba: ptr device priv structure
557 **/
beiscsi_get_params(struct beiscsi_hba * phba)558 static void beiscsi_get_params(struct beiscsi_hba *phba)
559 {
560 uint32_t total_cid_count = 0;
561 uint32_t total_icd_count = 0;
562 uint8_t ulp_num = 0;
563
564 total_cid_count = BEISCSI_GET_CID_COUNT(phba, BEISCSI_ULP0) +
565 BEISCSI_GET_CID_COUNT(phba, BEISCSI_ULP1);
566
567 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
568 uint32_t align_mask = 0;
569 uint32_t icd_post_per_page = 0;
570 uint32_t icd_count_unavailable = 0;
571 uint32_t icd_start = 0, icd_count = 0;
572 uint32_t icd_start_align = 0, icd_count_align = 0;
573
574 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
575 icd_start = phba->fw_config.iscsi_icd_start[ulp_num];
576 icd_count = phba->fw_config.iscsi_icd_count[ulp_num];
577
578 /* Get ICD count that can be posted on each page */
579 icd_post_per_page = (PAGE_SIZE / (BE2_SGE *
580 sizeof(struct iscsi_sge)));
581 align_mask = (icd_post_per_page - 1);
582
583 /* Check if icd_start is aligned ICD per page posting */
584 if (icd_start % icd_post_per_page) {
585 icd_start_align = ((icd_start +
586 icd_post_per_page) &
587 ~(align_mask));
588 phba->fw_config.
589 iscsi_icd_start[ulp_num] =
590 icd_start_align;
591 }
592
593 icd_count_align = (icd_count & ~align_mask);
594
595 /* ICD discarded in the process of alignment */
596 if (icd_start_align)
597 icd_count_unavailable = ((icd_start_align -
598 icd_start) +
599 (icd_count -
600 icd_count_align));
601
602 /* Updated ICD count available */
603 phba->fw_config.iscsi_icd_count[ulp_num] = (icd_count -
604 icd_count_unavailable);
605
606 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
607 "BM_%d : Aligned ICD values\n"
608 "\t ICD Start : %d\n"
609 "\t ICD Count : %d\n"
610 "\t ICD Discarded : %d\n",
611 phba->fw_config.
612 iscsi_icd_start[ulp_num],
613 phba->fw_config.
614 iscsi_icd_count[ulp_num],
615 icd_count_unavailable);
616 break;
617 }
618 }
619
620 total_icd_count = phba->fw_config.iscsi_icd_count[ulp_num];
621 phba->params.ios_per_ctrl = (total_icd_count -
622 (total_cid_count +
623 BE2_TMFS + BE2_NOPOUT_REQ));
624 phba->params.cxns_per_ctrl = total_cid_count;
625 phba->params.icds_per_ctrl = total_icd_count;
626 phba->params.num_sge_per_io = BE2_SGE;
627 phba->params.defpdu_hdr_sz = BE2_DEFPDU_HDR_SZ;
628 phba->params.defpdu_data_sz = BE2_DEFPDU_DATA_SZ;
629 phba->params.num_eq_entries = 1024;
630 phba->params.num_cq_entries = 1024;
631 phba->params.wrbs_per_cxn = 256;
632 }
633
hwi_ring_eq_db(struct beiscsi_hba * phba,unsigned int id,unsigned int clr_interrupt,unsigned int num_processed,unsigned char rearm,unsigned char event)634 static void hwi_ring_eq_db(struct beiscsi_hba *phba,
635 unsigned int id, unsigned int clr_interrupt,
636 unsigned int num_processed,
637 unsigned char rearm, unsigned char event)
638 {
639 u32 val = 0;
640
641 if (rearm)
642 val |= 1 << DB_EQ_REARM_SHIFT;
643 if (clr_interrupt)
644 val |= 1 << DB_EQ_CLR_SHIFT;
645 if (event)
646 val |= 1 << DB_EQ_EVNT_SHIFT;
647
648 val |= num_processed << DB_EQ_NUM_POPPED_SHIFT;
649 /* Setting lower order EQ_ID Bits */
650 val |= (id & DB_EQ_RING_ID_LOW_MASK);
651
652 /* Setting Higher order EQ_ID Bits */
653 val |= (((id >> DB_EQ_HIGH_FEILD_SHIFT) &
654 DB_EQ_RING_ID_HIGH_MASK)
655 << DB_EQ_HIGH_SET_SHIFT);
656
657 iowrite32(val, phba->db_va + DB_EQ_OFFSET);
658 }
659
660 /**
661 * be_isr_mcc - The isr routine of the driver.
662 * @irq: Not used
663 * @dev_id: Pointer to host adapter structure
664 */
be_isr_mcc(int irq,void * dev_id)665 static irqreturn_t be_isr_mcc(int irq, void *dev_id)
666 {
667 struct beiscsi_hba *phba;
668 struct be_eq_entry *eqe;
669 struct be_queue_info *eq;
670 struct be_queue_info *mcc;
671 unsigned int mcc_events;
672 struct be_eq_obj *pbe_eq;
673
674 pbe_eq = dev_id;
675 eq = &pbe_eq->q;
676 phba = pbe_eq->phba;
677 mcc = &phba->ctrl.mcc_obj.cq;
678 eqe = queue_tail_node(eq);
679
680 mcc_events = 0;
681 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
682 & EQE_VALID_MASK) {
683 if (((eqe->dw[offsetof(struct amap_eq_entry,
684 resource_id) / 32] &
685 EQE_RESID_MASK) >> 16) == mcc->id) {
686 mcc_events++;
687 }
688 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
689 queue_tail_inc(eq);
690 eqe = queue_tail_node(eq);
691 }
692
693 if (mcc_events) {
694 queue_work(phba->wq, &pbe_eq->mcc_work);
695 hwi_ring_eq_db(phba, eq->id, 1, mcc_events, 1, 1);
696 }
697 return IRQ_HANDLED;
698 }
699
700 /**
701 * be_isr_msix - The isr routine of the driver.
702 * @irq: Not used
703 * @dev_id: Pointer to host adapter structure
704 */
be_isr_msix(int irq,void * dev_id)705 static irqreturn_t be_isr_msix(int irq, void *dev_id)
706 {
707 struct beiscsi_hba *phba;
708 struct be_queue_info *eq;
709 struct be_eq_obj *pbe_eq;
710
711 pbe_eq = dev_id;
712 eq = &pbe_eq->q;
713
714 phba = pbe_eq->phba;
715 /* disable interrupt till iopoll completes */
716 hwi_ring_eq_db(phba, eq->id, 1, 0, 0, 1);
717 irq_poll_sched(&pbe_eq->iopoll);
718
719 return IRQ_HANDLED;
720 }
721
722 /**
723 * be_isr - The isr routine of the driver.
724 * @irq: Not used
725 * @dev_id: Pointer to host adapter structure
726 */
be_isr(int irq,void * dev_id)727 static irqreturn_t be_isr(int irq, void *dev_id)
728 {
729 struct beiscsi_hba *phba;
730 struct hwi_controller *phwi_ctrlr;
731 struct hwi_context_memory *phwi_context;
732 struct be_eq_entry *eqe;
733 struct be_queue_info *eq;
734 struct be_queue_info *mcc;
735 unsigned int mcc_events, io_events;
736 struct be_ctrl_info *ctrl;
737 struct be_eq_obj *pbe_eq;
738 int isr, rearm;
739
740 phba = dev_id;
741 ctrl = &phba->ctrl;
742 isr = ioread32(ctrl->csr + CEV_ISR0_OFFSET +
743 (PCI_FUNC(ctrl->pdev->devfn) * CEV_ISR_SIZE));
744 if (!isr)
745 return IRQ_NONE;
746
747 phwi_ctrlr = phba->phwi_ctrlr;
748 phwi_context = phwi_ctrlr->phwi_ctxt;
749 pbe_eq = &phwi_context->be_eq[0];
750
751 eq = &phwi_context->be_eq[0].q;
752 mcc = &phba->ctrl.mcc_obj.cq;
753 eqe = queue_tail_node(eq);
754
755 io_events = 0;
756 mcc_events = 0;
757 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
758 & EQE_VALID_MASK) {
759 if (((eqe->dw[offsetof(struct amap_eq_entry,
760 resource_id) / 32] & EQE_RESID_MASK) >> 16) == mcc->id)
761 mcc_events++;
762 else
763 io_events++;
764 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
765 queue_tail_inc(eq);
766 eqe = queue_tail_node(eq);
767 }
768 if (!io_events && !mcc_events)
769 return IRQ_NONE;
770
771 /* no need to rearm if interrupt is only for IOs */
772 rearm = 0;
773 if (mcc_events) {
774 queue_work(phba->wq, &pbe_eq->mcc_work);
775 /* rearm for MCCQ */
776 rearm = 1;
777 }
778 if (io_events)
779 irq_poll_sched(&pbe_eq->iopoll);
780 hwi_ring_eq_db(phba, eq->id, 0, (io_events + mcc_events), rearm, 1);
781 return IRQ_HANDLED;
782 }
783
beiscsi_free_irqs(struct beiscsi_hba * phba)784 static void beiscsi_free_irqs(struct beiscsi_hba *phba)
785 {
786 struct hwi_context_memory *phwi_context;
787 int i;
788
789 if (!phba->pcidev->msix_enabled) {
790 if (phba->pcidev->irq)
791 free_irq(phba->pcidev->irq, phba);
792 return;
793 }
794
795 phwi_context = phba->phwi_ctrlr->phwi_ctxt;
796 for (i = 0; i <= phba->num_cpus; i++) {
797 free_irq(pci_irq_vector(phba->pcidev, i),
798 &phwi_context->be_eq[i]);
799 kfree(phba->msi_name[i]);
800 }
801 }
802
beiscsi_init_irqs(struct beiscsi_hba * phba)803 static int beiscsi_init_irqs(struct beiscsi_hba *phba)
804 {
805 struct pci_dev *pcidev = phba->pcidev;
806 struct hwi_controller *phwi_ctrlr;
807 struct hwi_context_memory *phwi_context;
808 int ret, i, j;
809
810 phwi_ctrlr = phba->phwi_ctrlr;
811 phwi_context = phwi_ctrlr->phwi_ctxt;
812
813 if (pcidev->msix_enabled) {
814 for (i = 0; i < phba->num_cpus; i++) {
815 phba->msi_name[i] = kasprintf(GFP_KERNEL,
816 "beiscsi_%02x_%02x",
817 phba->shost->host_no, i);
818 if (!phba->msi_name[i]) {
819 ret = -ENOMEM;
820 goto free_msix_irqs;
821 }
822
823 ret = request_irq(pci_irq_vector(pcidev, i),
824 be_isr_msix, 0, phba->msi_name[i],
825 &phwi_context->be_eq[i]);
826 if (ret) {
827 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
828 "BM_%d : beiscsi_init_irqs-Failed to"
829 "register msix for i = %d\n",
830 i);
831 kfree(phba->msi_name[i]);
832 goto free_msix_irqs;
833 }
834 }
835 phba->msi_name[i] = kasprintf(GFP_KERNEL, "beiscsi_mcc_%02x",
836 phba->shost->host_no);
837 if (!phba->msi_name[i]) {
838 ret = -ENOMEM;
839 goto free_msix_irqs;
840 }
841 ret = request_irq(pci_irq_vector(pcidev, i), be_isr_mcc, 0,
842 phba->msi_name[i], &phwi_context->be_eq[i]);
843 if (ret) {
844 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT ,
845 "BM_%d : beiscsi_init_irqs-"
846 "Failed to register beiscsi_msix_mcc\n");
847 kfree(phba->msi_name[i]);
848 goto free_msix_irqs;
849 }
850
851 } else {
852 ret = request_irq(pcidev->irq, be_isr, IRQF_SHARED,
853 "beiscsi", phba);
854 if (ret) {
855 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
856 "BM_%d : beiscsi_init_irqs-"
857 "Failed to register irq\\n");
858 return ret;
859 }
860 }
861 return 0;
862 free_msix_irqs:
863 for (j = i - 1; j >= 0; j--) {
864 free_irq(pci_irq_vector(pcidev, i), &phwi_context->be_eq[j]);
865 kfree(phba->msi_name[j]);
866 }
867 return ret;
868 }
869
hwi_ring_cq_db(struct beiscsi_hba * phba,unsigned int id,unsigned int num_processed,unsigned char rearm)870 void hwi_ring_cq_db(struct beiscsi_hba *phba,
871 unsigned int id, unsigned int num_processed,
872 unsigned char rearm)
873 {
874 u32 val = 0;
875
876 if (rearm)
877 val |= 1 << DB_CQ_REARM_SHIFT;
878
879 val |= num_processed << DB_CQ_NUM_POPPED_SHIFT;
880
881 /* Setting lower order CQ_ID Bits */
882 val |= (id & DB_CQ_RING_ID_LOW_MASK);
883
884 /* Setting Higher order CQ_ID Bits */
885 val |= (((id >> DB_CQ_HIGH_FEILD_SHIFT) &
886 DB_CQ_RING_ID_HIGH_MASK)
887 << DB_CQ_HIGH_SET_SHIFT);
888
889 iowrite32(val, phba->db_va + DB_CQ_OFFSET);
890 }
891
alloc_io_sgl_handle(struct beiscsi_hba * phba)892 static struct sgl_handle *alloc_io_sgl_handle(struct beiscsi_hba *phba)
893 {
894 struct sgl_handle *psgl_handle;
895 unsigned long flags;
896
897 spin_lock_irqsave(&phba->io_sgl_lock, flags);
898 if (phba->io_sgl_hndl_avbl) {
899 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO,
900 "BM_%d : In alloc_io_sgl_handle,"
901 " io_sgl_alloc_index=%d\n",
902 phba->io_sgl_alloc_index);
903
904 psgl_handle = phba->io_sgl_hndl_base[phba->
905 io_sgl_alloc_index];
906 phba->io_sgl_hndl_base[phba->io_sgl_alloc_index] = NULL;
907 phba->io_sgl_hndl_avbl--;
908 if (phba->io_sgl_alloc_index == (phba->params.
909 ios_per_ctrl - 1))
910 phba->io_sgl_alloc_index = 0;
911 else
912 phba->io_sgl_alloc_index++;
913 } else
914 psgl_handle = NULL;
915 spin_unlock_irqrestore(&phba->io_sgl_lock, flags);
916 return psgl_handle;
917 }
918
919 static void
free_io_sgl_handle(struct beiscsi_hba * phba,struct sgl_handle * psgl_handle)920 free_io_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle)
921 {
922 unsigned long flags;
923
924 spin_lock_irqsave(&phba->io_sgl_lock, flags);
925 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO,
926 "BM_%d : In free_,io_sgl_free_index=%d\n",
927 phba->io_sgl_free_index);
928
929 if (phba->io_sgl_hndl_base[phba->io_sgl_free_index]) {
930 /*
931 * this can happen if clean_task is called on a task that
932 * failed in xmit_task or alloc_pdu.
933 */
934 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO,
935 "BM_%d : Double Free in IO SGL io_sgl_free_index=%d, value there=%p\n",
936 phba->io_sgl_free_index,
937 phba->io_sgl_hndl_base[phba->io_sgl_free_index]);
938 spin_unlock_irqrestore(&phba->io_sgl_lock, flags);
939 return;
940 }
941 phba->io_sgl_hndl_base[phba->io_sgl_free_index] = psgl_handle;
942 phba->io_sgl_hndl_avbl++;
943 if (phba->io_sgl_free_index == (phba->params.ios_per_ctrl - 1))
944 phba->io_sgl_free_index = 0;
945 else
946 phba->io_sgl_free_index++;
947 spin_unlock_irqrestore(&phba->io_sgl_lock, flags);
948 }
949
950 static inline struct wrb_handle *
beiscsi_get_wrb_handle(struct hwi_wrb_context * pwrb_context,unsigned int wrbs_per_cxn)951 beiscsi_get_wrb_handle(struct hwi_wrb_context *pwrb_context,
952 unsigned int wrbs_per_cxn)
953 {
954 struct wrb_handle *pwrb_handle;
955 unsigned long flags;
956
957 spin_lock_irqsave(&pwrb_context->wrb_lock, flags);
958 if (!pwrb_context->wrb_handles_available) {
959 spin_unlock_irqrestore(&pwrb_context->wrb_lock, flags);
960 return NULL;
961 }
962 pwrb_handle = pwrb_context->pwrb_handle_base[pwrb_context->alloc_index];
963 pwrb_context->wrb_handles_available--;
964 if (pwrb_context->alloc_index == (wrbs_per_cxn - 1))
965 pwrb_context->alloc_index = 0;
966 else
967 pwrb_context->alloc_index++;
968 spin_unlock_irqrestore(&pwrb_context->wrb_lock, flags);
969
970 if (pwrb_handle)
971 memset(pwrb_handle->pwrb, 0, sizeof(*pwrb_handle->pwrb));
972
973 return pwrb_handle;
974 }
975
976 /**
977 * alloc_wrb_handle - To allocate a wrb handle
978 * @phba: The hba pointer
979 * @cid: The cid to use for allocation
980 * @pcontext: ptr to ptr to wrb context
981 *
982 * This happens under session_lock until submission to chip
983 */
alloc_wrb_handle(struct beiscsi_hba * phba,unsigned int cid,struct hwi_wrb_context ** pcontext)984 struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid,
985 struct hwi_wrb_context **pcontext)
986 {
987 struct hwi_wrb_context *pwrb_context;
988 struct hwi_controller *phwi_ctrlr;
989 uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
990
991 phwi_ctrlr = phba->phwi_ctrlr;
992 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
993 /* return the context address */
994 *pcontext = pwrb_context;
995 return beiscsi_get_wrb_handle(pwrb_context, phba->params.wrbs_per_cxn);
996 }
997
998 static inline void
beiscsi_put_wrb_handle(struct hwi_wrb_context * pwrb_context,struct wrb_handle * pwrb_handle,unsigned int wrbs_per_cxn)999 beiscsi_put_wrb_handle(struct hwi_wrb_context *pwrb_context,
1000 struct wrb_handle *pwrb_handle,
1001 unsigned int wrbs_per_cxn)
1002 {
1003 unsigned long flags;
1004
1005 spin_lock_irqsave(&pwrb_context->wrb_lock, flags);
1006 pwrb_context->pwrb_handle_base[pwrb_context->free_index] = pwrb_handle;
1007 pwrb_context->wrb_handles_available++;
1008 if (pwrb_context->free_index == (wrbs_per_cxn - 1))
1009 pwrb_context->free_index = 0;
1010 else
1011 pwrb_context->free_index++;
1012 pwrb_handle->pio_handle = NULL;
1013 spin_unlock_irqrestore(&pwrb_context->wrb_lock, flags);
1014 }
1015
1016 /**
1017 * free_wrb_handle - To free the wrb handle back to pool
1018 * @phba: The hba pointer
1019 * @pwrb_context: The context to free from
1020 * @pwrb_handle: The wrb_handle to free
1021 *
1022 * This happens under session_lock until submission to chip
1023 */
1024 static void
free_wrb_handle(struct beiscsi_hba * phba,struct hwi_wrb_context * pwrb_context,struct wrb_handle * pwrb_handle)1025 free_wrb_handle(struct beiscsi_hba *phba, struct hwi_wrb_context *pwrb_context,
1026 struct wrb_handle *pwrb_handle)
1027 {
1028 beiscsi_put_wrb_handle(pwrb_context,
1029 pwrb_handle,
1030 phba->params.wrbs_per_cxn);
1031 beiscsi_log(phba, KERN_INFO,
1032 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
1033 "BM_%d : FREE WRB: pwrb_handle=%p free_index=0x%x"
1034 "wrb_handles_available=%d\n",
1035 pwrb_handle, pwrb_context->free_index,
1036 pwrb_context->wrb_handles_available);
1037 }
1038
alloc_mgmt_sgl_handle(struct beiscsi_hba * phba)1039 static struct sgl_handle *alloc_mgmt_sgl_handle(struct beiscsi_hba *phba)
1040 {
1041 struct sgl_handle *psgl_handle;
1042 unsigned long flags;
1043
1044 spin_lock_irqsave(&phba->mgmt_sgl_lock, flags);
1045 if (phba->eh_sgl_hndl_avbl) {
1046 psgl_handle = phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index];
1047 phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index] = NULL;
1048 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1049 "BM_%d : mgmt_sgl_alloc_index=%d=0x%x\n",
1050 phba->eh_sgl_alloc_index,
1051 phba->eh_sgl_alloc_index);
1052
1053 phba->eh_sgl_hndl_avbl--;
1054 if (phba->eh_sgl_alloc_index ==
1055 (phba->params.icds_per_ctrl - phba->params.ios_per_ctrl -
1056 1))
1057 phba->eh_sgl_alloc_index = 0;
1058 else
1059 phba->eh_sgl_alloc_index++;
1060 } else
1061 psgl_handle = NULL;
1062 spin_unlock_irqrestore(&phba->mgmt_sgl_lock, flags);
1063 return psgl_handle;
1064 }
1065
1066 void
free_mgmt_sgl_handle(struct beiscsi_hba * phba,struct sgl_handle * psgl_handle)1067 free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle)
1068 {
1069 unsigned long flags;
1070
1071 spin_lock_irqsave(&phba->mgmt_sgl_lock, flags);
1072 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1073 "BM_%d : In free_mgmt_sgl_handle,"
1074 "eh_sgl_free_index=%d\n",
1075 phba->eh_sgl_free_index);
1076
1077 if (phba->eh_sgl_hndl_base[phba->eh_sgl_free_index]) {
1078 /*
1079 * this can happen if clean_task is called on a task that
1080 * failed in xmit_task or alloc_pdu.
1081 */
1082 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
1083 "BM_%d : Double Free in eh SGL ,"
1084 "eh_sgl_free_index=%d\n",
1085 phba->eh_sgl_free_index);
1086 spin_unlock_irqrestore(&phba->mgmt_sgl_lock, flags);
1087 return;
1088 }
1089 phba->eh_sgl_hndl_base[phba->eh_sgl_free_index] = psgl_handle;
1090 phba->eh_sgl_hndl_avbl++;
1091 if (phba->eh_sgl_free_index ==
1092 (phba->params.icds_per_ctrl - phba->params.ios_per_ctrl - 1))
1093 phba->eh_sgl_free_index = 0;
1094 else
1095 phba->eh_sgl_free_index++;
1096 spin_unlock_irqrestore(&phba->mgmt_sgl_lock, flags);
1097 }
1098
1099 static void
be_complete_io(struct beiscsi_conn * beiscsi_conn,struct iscsi_task * task,struct common_sol_cqe * csol_cqe)1100 be_complete_io(struct beiscsi_conn *beiscsi_conn,
1101 struct iscsi_task *task,
1102 struct common_sol_cqe *csol_cqe)
1103 {
1104 struct beiscsi_io_task *io_task = task->dd_data;
1105 struct be_status_bhs *sts_bhs =
1106 (struct be_status_bhs *)io_task->cmd_bhs;
1107 struct iscsi_conn *conn = beiscsi_conn->conn;
1108 unsigned char *sense;
1109 u32 resid = 0, exp_cmdsn, max_cmdsn;
1110 u8 rsp, status, flags;
1111
1112 exp_cmdsn = csol_cqe->exp_cmdsn;
1113 max_cmdsn = (csol_cqe->exp_cmdsn +
1114 csol_cqe->cmd_wnd - 1);
1115 rsp = csol_cqe->i_resp;
1116 status = csol_cqe->i_sts;
1117 flags = csol_cqe->i_flags;
1118 resid = csol_cqe->res_cnt;
1119
1120 if (!task->sc) {
1121 if (io_task->scsi_cmnd) {
1122 scsi_dma_unmap(io_task->scsi_cmnd);
1123 io_task->scsi_cmnd = NULL;
1124 }
1125
1126 return;
1127 }
1128 task->sc->result = (DID_OK << 16) | status;
1129 if (rsp != ISCSI_STATUS_CMD_COMPLETED) {
1130 task->sc->result = DID_ERROR << 16;
1131 goto unmap;
1132 }
1133
1134 /* bidi not initially supported */
1135 if (flags & (ISCSI_FLAG_CMD_UNDERFLOW | ISCSI_FLAG_CMD_OVERFLOW)) {
1136 if (!status && (flags & ISCSI_FLAG_CMD_OVERFLOW))
1137 task->sc->result = DID_ERROR << 16;
1138
1139 if (flags & ISCSI_FLAG_CMD_UNDERFLOW) {
1140 scsi_set_resid(task->sc, resid);
1141 if (!status && (scsi_bufflen(task->sc) - resid <
1142 task->sc->underflow))
1143 task->sc->result = DID_ERROR << 16;
1144 }
1145 }
1146
1147 if (status == SAM_STAT_CHECK_CONDITION) {
1148 u16 sense_len;
1149 unsigned short *slen = (unsigned short *)sts_bhs->sense_info;
1150
1151 sense = sts_bhs->sense_info + sizeof(unsigned short);
1152 sense_len = be16_to_cpu(*slen);
1153 memcpy(task->sc->sense_buffer, sense,
1154 min_t(u16, sense_len, SCSI_SENSE_BUFFERSIZE));
1155 }
1156
1157 if (io_task->cmd_bhs->iscsi_hdr.flags & ISCSI_FLAG_CMD_READ)
1158 conn->rxdata_octets += resid;
1159 unmap:
1160 if (io_task->scsi_cmnd) {
1161 scsi_dma_unmap(io_task->scsi_cmnd);
1162 io_task->scsi_cmnd = NULL;
1163 }
1164 iscsi_complete_scsi_task(task, exp_cmdsn, max_cmdsn);
1165 }
1166
1167 static void
be_complete_logout(struct beiscsi_conn * beiscsi_conn,struct iscsi_task * task,struct common_sol_cqe * csol_cqe)1168 be_complete_logout(struct beiscsi_conn *beiscsi_conn,
1169 struct iscsi_task *task,
1170 struct common_sol_cqe *csol_cqe)
1171 {
1172 struct iscsi_logout_rsp *hdr;
1173 struct beiscsi_io_task *io_task = task->dd_data;
1174 struct iscsi_conn *conn = beiscsi_conn->conn;
1175
1176 hdr = (struct iscsi_logout_rsp *)task->hdr;
1177 hdr->opcode = ISCSI_OP_LOGOUT_RSP;
1178 hdr->t2wait = 5;
1179 hdr->t2retain = 0;
1180 hdr->flags = csol_cqe->i_flags;
1181 hdr->response = csol_cqe->i_resp;
1182 hdr->exp_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn);
1183 hdr->max_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn +
1184 csol_cqe->cmd_wnd - 1);
1185
1186 hdr->dlength[0] = 0;
1187 hdr->dlength[1] = 0;
1188 hdr->dlength[2] = 0;
1189 hdr->hlength = 0;
1190 hdr->itt = io_task->libiscsi_itt;
1191 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
1192 }
1193
1194 static void
be_complete_tmf(struct beiscsi_conn * beiscsi_conn,struct iscsi_task * task,struct common_sol_cqe * csol_cqe)1195 be_complete_tmf(struct beiscsi_conn *beiscsi_conn,
1196 struct iscsi_task *task,
1197 struct common_sol_cqe *csol_cqe)
1198 {
1199 struct iscsi_tm_rsp *hdr;
1200 struct iscsi_conn *conn = beiscsi_conn->conn;
1201 struct beiscsi_io_task *io_task = task->dd_data;
1202
1203 hdr = (struct iscsi_tm_rsp *)task->hdr;
1204 hdr->opcode = ISCSI_OP_SCSI_TMFUNC_RSP;
1205 hdr->flags = csol_cqe->i_flags;
1206 hdr->response = csol_cqe->i_resp;
1207 hdr->exp_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn);
1208 hdr->max_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn +
1209 csol_cqe->cmd_wnd - 1);
1210
1211 hdr->itt = io_task->libiscsi_itt;
1212 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
1213 }
1214
1215 static void
hwi_complete_drvr_msgs(struct beiscsi_conn * beiscsi_conn,struct beiscsi_hba * phba,struct sol_cqe * psol)1216 hwi_complete_drvr_msgs(struct beiscsi_conn *beiscsi_conn,
1217 struct beiscsi_hba *phba, struct sol_cqe *psol)
1218 {
1219 struct hwi_wrb_context *pwrb_context;
1220 uint16_t wrb_index, cid, cri_index;
1221 struct hwi_controller *phwi_ctrlr;
1222 struct wrb_handle *pwrb_handle;
1223 struct iscsi_session *session;
1224 struct iscsi_task *task;
1225
1226 phwi_ctrlr = phba->phwi_ctrlr;
1227 if (is_chip_be2_be3r(phba)) {
1228 wrb_index = AMAP_GET_BITS(struct amap_it_dmsg_cqe,
1229 wrb_idx, psol);
1230 cid = AMAP_GET_BITS(struct amap_it_dmsg_cqe,
1231 cid, psol);
1232 } else {
1233 wrb_index = AMAP_GET_BITS(struct amap_it_dmsg_cqe_v2,
1234 wrb_idx, psol);
1235 cid = AMAP_GET_BITS(struct amap_it_dmsg_cqe_v2,
1236 cid, psol);
1237 }
1238
1239 cri_index = BE_GET_CRI_FROM_CID(cid);
1240 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
1241 pwrb_handle = pwrb_context->pwrb_handle_basestd[wrb_index];
1242 session = beiscsi_conn->conn->session;
1243 spin_lock_bh(&session->back_lock);
1244 task = pwrb_handle->pio_handle;
1245 if (task)
1246 __iscsi_put_task(task);
1247 spin_unlock_bh(&session->back_lock);
1248 }
1249
1250 static void
be_complete_nopin_resp(struct beiscsi_conn * beiscsi_conn,struct iscsi_task * task,struct common_sol_cqe * csol_cqe)1251 be_complete_nopin_resp(struct beiscsi_conn *beiscsi_conn,
1252 struct iscsi_task *task,
1253 struct common_sol_cqe *csol_cqe)
1254 {
1255 struct iscsi_nopin *hdr;
1256 struct iscsi_conn *conn = beiscsi_conn->conn;
1257 struct beiscsi_io_task *io_task = task->dd_data;
1258
1259 hdr = (struct iscsi_nopin *)task->hdr;
1260 hdr->flags = csol_cqe->i_flags;
1261 hdr->exp_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn);
1262 hdr->max_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn +
1263 csol_cqe->cmd_wnd - 1);
1264
1265 hdr->opcode = ISCSI_OP_NOOP_IN;
1266 hdr->itt = io_task->libiscsi_itt;
1267 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
1268 }
1269
adapter_get_sol_cqe(struct beiscsi_hba * phba,struct sol_cqe * psol,struct common_sol_cqe * csol_cqe)1270 static void adapter_get_sol_cqe(struct beiscsi_hba *phba,
1271 struct sol_cqe *psol,
1272 struct common_sol_cqe *csol_cqe)
1273 {
1274 if (is_chip_be2_be3r(phba)) {
1275 csol_cqe->exp_cmdsn = AMAP_GET_BITS(struct amap_sol_cqe,
1276 i_exp_cmd_sn, psol);
1277 csol_cqe->res_cnt = AMAP_GET_BITS(struct amap_sol_cqe,
1278 i_res_cnt, psol);
1279 csol_cqe->cmd_wnd = AMAP_GET_BITS(struct amap_sol_cqe,
1280 i_cmd_wnd, psol);
1281 csol_cqe->wrb_index = AMAP_GET_BITS(struct amap_sol_cqe,
1282 wrb_index, psol);
1283 csol_cqe->cid = AMAP_GET_BITS(struct amap_sol_cqe,
1284 cid, psol);
1285 csol_cqe->hw_sts = AMAP_GET_BITS(struct amap_sol_cqe,
1286 hw_sts, psol);
1287 csol_cqe->i_resp = AMAP_GET_BITS(struct amap_sol_cqe,
1288 i_resp, psol);
1289 csol_cqe->i_sts = AMAP_GET_BITS(struct amap_sol_cqe,
1290 i_sts, psol);
1291 csol_cqe->i_flags = AMAP_GET_BITS(struct amap_sol_cqe,
1292 i_flags, psol);
1293 } else {
1294 csol_cqe->exp_cmdsn = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1295 i_exp_cmd_sn, psol);
1296 csol_cqe->res_cnt = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1297 i_res_cnt, psol);
1298 csol_cqe->wrb_index = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1299 wrb_index, psol);
1300 csol_cqe->cid = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1301 cid, psol);
1302 csol_cqe->hw_sts = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1303 hw_sts, psol);
1304 csol_cqe->cmd_wnd = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1305 i_cmd_wnd, psol);
1306 if (AMAP_GET_BITS(struct amap_sol_cqe_v2,
1307 cmd_cmpl, psol))
1308 csol_cqe->i_sts = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1309 i_sts, psol);
1310 else
1311 csol_cqe->i_resp = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1312 i_sts, psol);
1313 if (AMAP_GET_BITS(struct amap_sol_cqe_v2,
1314 u, psol))
1315 csol_cqe->i_flags = ISCSI_FLAG_CMD_UNDERFLOW;
1316
1317 if (AMAP_GET_BITS(struct amap_sol_cqe_v2,
1318 o, psol))
1319 csol_cqe->i_flags |= ISCSI_FLAG_CMD_OVERFLOW;
1320 }
1321 }
1322
1323
hwi_complete_cmd(struct beiscsi_conn * beiscsi_conn,struct beiscsi_hba * phba,struct sol_cqe * psol)1324 static void hwi_complete_cmd(struct beiscsi_conn *beiscsi_conn,
1325 struct beiscsi_hba *phba, struct sol_cqe *psol)
1326 {
1327 struct iscsi_conn *conn = beiscsi_conn->conn;
1328 struct iscsi_session *session = conn->session;
1329 struct common_sol_cqe csol_cqe = {0};
1330 struct hwi_wrb_context *pwrb_context;
1331 struct hwi_controller *phwi_ctrlr;
1332 struct wrb_handle *pwrb_handle;
1333 struct iscsi_task *task;
1334 uint16_t cri_index = 0;
1335 uint8_t type;
1336
1337 phwi_ctrlr = phba->phwi_ctrlr;
1338
1339 /* Copy the elements to a common structure */
1340 adapter_get_sol_cqe(phba, psol, &csol_cqe);
1341
1342 cri_index = BE_GET_CRI_FROM_CID(csol_cqe.cid);
1343 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
1344
1345 pwrb_handle = pwrb_context->pwrb_handle_basestd[
1346 csol_cqe.wrb_index];
1347
1348 spin_lock_bh(&session->back_lock);
1349 task = pwrb_handle->pio_handle;
1350 if (!task) {
1351 spin_unlock_bh(&session->back_lock);
1352 return;
1353 }
1354 type = ((struct beiscsi_io_task *)task->dd_data)->wrb_type;
1355
1356 switch (type) {
1357 case HWH_TYPE_IO:
1358 case HWH_TYPE_IO_RD:
1359 if ((task->hdr->opcode & ISCSI_OPCODE_MASK) ==
1360 ISCSI_OP_NOOP_OUT)
1361 be_complete_nopin_resp(beiscsi_conn, task, &csol_cqe);
1362 else
1363 be_complete_io(beiscsi_conn, task, &csol_cqe);
1364 break;
1365
1366 case HWH_TYPE_LOGOUT:
1367 if ((task->hdr->opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGOUT)
1368 be_complete_logout(beiscsi_conn, task, &csol_cqe);
1369 else
1370 be_complete_tmf(beiscsi_conn, task, &csol_cqe);
1371 break;
1372
1373 case HWH_TYPE_LOGIN:
1374 beiscsi_log(phba, KERN_ERR,
1375 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
1376 "BM_%d :\t\t No HWH_TYPE_LOGIN Expected in"
1377 " hwi_complete_cmd- Solicited path\n");
1378 break;
1379
1380 case HWH_TYPE_NOP:
1381 be_complete_nopin_resp(beiscsi_conn, task, &csol_cqe);
1382 break;
1383
1384 default:
1385 beiscsi_log(phba, KERN_WARNING,
1386 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
1387 "BM_%d : In hwi_complete_cmd, unknown type = %d"
1388 "wrb_index 0x%x CID 0x%x\n", type,
1389 csol_cqe.wrb_index,
1390 csol_cqe.cid);
1391 break;
1392 }
1393
1394 spin_unlock_bh(&session->back_lock);
1395 }
1396
1397 /*
1398 * ASYNC PDUs include
1399 * a. Unsolicited NOP-In (target initiated NOP-In)
1400 * b. ASYNC Messages
1401 * c. Reject PDU
1402 * d. Login response
1403 * These headers arrive unprocessed by the EP firmware.
1404 * iSCSI layer processes them.
1405 */
1406 static unsigned int
beiscsi_complete_pdu(struct beiscsi_conn * beiscsi_conn,struct pdu_base * phdr,void * pdata,unsigned int dlen)1407 beiscsi_complete_pdu(struct beiscsi_conn *beiscsi_conn,
1408 struct pdu_base *phdr, void *pdata, unsigned int dlen)
1409 {
1410 struct beiscsi_hba *phba = beiscsi_conn->phba;
1411 struct iscsi_conn *conn = beiscsi_conn->conn;
1412 struct beiscsi_io_task *io_task;
1413 struct iscsi_hdr *login_hdr;
1414 struct iscsi_task *task;
1415 u8 code;
1416
1417 code = AMAP_GET_BITS(struct amap_pdu_base, opcode, phdr);
1418 switch (code) {
1419 case ISCSI_OP_NOOP_IN:
1420 pdata = NULL;
1421 dlen = 0;
1422 break;
1423 case ISCSI_OP_ASYNC_EVENT:
1424 break;
1425 case ISCSI_OP_REJECT:
1426 WARN_ON(!pdata);
1427 WARN_ON(!(dlen == 48));
1428 beiscsi_log(phba, KERN_ERR,
1429 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
1430 "BM_%d : In ISCSI_OP_REJECT\n");
1431 break;
1432 case ISCSI_OP_LOGIN_RSP:
1433 case ISCSI_OP_TEXT_RSP:
1434 task = conn->login_task;
1435 io_task = task->dd_data;
1436 login_hdr = (struct iscsi_hdr *)phdr;
1437 login_hdr->itt = io_task->libiscsi_itt;
1438 break;
1439 default:
1440 beiscsi_log(phba, KERN_WARNING,
1441 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
1442 "BM_%d : unrecognized async PDU opcode 0x%x\n",
1443 code);
1444 return 1;
1445 }
1446 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)phdr, pdata, dlen);
1447 return 0;
1448 }
1449
1450 static inline void
beiscsi_hdl_put_handle(struct hd_async_context * pasync_ctx,struct hd_async_handle * pasync_handle)1451 beiscsi_hdl_put_handle(struct hd_async_context *pasync_ctx,
1452 struct hd_async_handle *pasync_handle)
1453 {
1454 pasync_handle->is_final = 0;
1455 pasync_handle->buffer_len = 0;
1456 pasync_handle->in_use = 0;
1457 list_del_init(&pasync_handle->link);
1458 }
1459
1460 static void
beiscsi_hdl_purge_handles(struct beiscsi_hba * phba,struct hd_async_context * pasync_ctx,u16 cri)1461 beiscsi_hdl_purge_handles(struct beiscsi_hba *phba,
1462 struct hd_async_context *pasync_ctx,
1463 u16 cri)
1464 {
1465 struct hd_async_handle *pasync_handle, *tmp_handle;
1466 struct list_head *plist;
1467
1468 plist = &pasync_ctx->async_entry[cri].wq.list;
1469 list_for_each_entry_safe(pasync_handle, tmp_handle, plist, link)
1470 beiscsi_hdl_put_handle(pasync_ctx, pasync_handle);
1471
1472 INIT_LIST_HEAD(&pasync_ctx->async_entry[cri].wq.list);
1473 pasync_ctx->async_entry[cri].wq.hdr_len = 0;
1474 pasync_ctx->async_entry[cri].wq.bytes_received = 0;
1475 pasync_ctx->async_entry[cri].wq.bytes_needed = 0;
1476 }
1477
1478 static struct hd_async_handle *
beiscsi_hdl_get_handle(struct beiscsi_conn * beiscsi_conn,struct hd_async_context * pasync_ctx,struct i_t_dpdu_cqe * pdpdu_cqe,u8 * header)1479 beiscsi_hdl_get_handle(struct beiscsi_conn *beiscsi_conn,
1480 struct hd_async_context *pasync_ctx,
1481 struct i_t_dpdu_cqe *pdpdu_cqe,
1482 u8 *header)
1483 {
1484 struct beiscsi_hba *phba = beiscsi_conn->phba;
1485 struct hd_async_handle *pasync_handle;
1486 struct be_bus_address phys_addr;
1487 u16 cid, code, ci, cri;
1488 u8 final, error = 0;
1489 u32 dpl;
1490
1491 cid = beiscsi_conn->beiscsi_conn_cid;
1492 cri = BE_GET_ASYNC_CRI_FROM_CID(cid);
1493 /**
1494 * This function is invoked to get the right async_handle structure
1495 * from a given DEF PDU CQ entry.
1496 *
1497 * - index in CQ entry gives the vertical index
1498 * - address in CQ entry is the offset where the DMA last ended
1499 * - final - no more notifications for this PDU
1500 */
1501 if (is_chip_be2_be3r(phba)) {
1502 dpl = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
1503 dpl, pdpdu_cqe);
1504 ci = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
1505 index, pdpdu_cqe);
1506 final = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
1507 final, pdpdu_cqe);
1508 } else {
1509 dpl = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2,
1510 dpl, pdpdu_cqe);
1511 ci = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2,
1512 index, pdpdu_cqe);
1513 final = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2,
1514 final, pdpdu_cqe);
1515 }
1516
1517 /**
1518 * DB addr Hi/Lo is same for BE and SKH.
1519 * Subtract the dataplacementlength to get to the base.
1520 */
1521 phys_addr.u.a32.address_lo = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
1522 db_addr_lo, pdpdu_cqe);
1523 phys_addr.u.a32.address_lo -= dpl;
1524 phys_addr.u.a32.address_hi = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
1525 db_addr_hi, pdpdu_cqe);
1526
1527 code = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe, code, pdpdu_cqe);
1528 switch (code) {
1529 case UNSOL_HDR_NOTIFY:
1530 pasync_handle = pasync_ctx->async_entry[ci].header;
1531 *header = 1;
1532 break;
1533 case UNSOL_DATA_DIGEST_ERROR_NOTIFY:
1534 error = 1;
1535 fallthrough;
1536 case UNSOL_DATA_NOTIFY:
1537 pasync_handle = pasync_ctx->async_entry[ci].data;
1538 break;
1539 /* called only for above codes */
1540 default:
1541 return NULL;
1542 }
1543
1544 if (pasync_handle->pa.u.a64.address != phys_addr.u.a64.address ||
1545 pasync_handle->index != ci) {
1546 /* driver bug - if ci does not match async handle index */
1547 error = 1;
1548 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_ISCSI,
1549 "BM_%d : cid %u async PDU handle mismatch - addr in %cQE %llx at %u:addr in CQE %llx ci %u\n",
1550 cid, pasync_handle->is_header ? 'H' : 'D',
1551 pasync_handle->pa.u.a64.address,
1552 pasync_handle->index,
1553 phys_addr.u.a64.address, ci);
1554 /* FW has stale address - attempt continuing by dropping */
1555 }
1556
1557 /**
1558 * DEF PDU header and data buffers with errors should be simply
1559 * dropped as there are no consumers for it.
1560 */
1561 if (error) {
1562 beiscsi_hdl_put_handle(pasync_ctx, pasync_handle);
1563 return NULL;
1564 }
1565
1566 if (pasync_handle->in_use || !list_empty(&pasync_handle->link)) {
1567 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_ISCSI,
1568 "BM_%d : cid %d async PDU handle in use - code %d ci %d addr %llx\n",
1569 cid, code, ci, phys_addr.u.a64.address);
1570 beiscsi_hdl_purge_handles(phba, pasync_ctx, cri);
1571 }
1572
1573 list_del_init(&pasync_handle->link);
1574 /**
1575 * Each CID is associated with unique CRI.
1576 * ASYNC_CRI_FROM_CID mapping and CRI_FROM_CID are totaly different.
1577 **/
1578 pasync_handle->cri = cri;
1579 pasync_handle->is_final = final;
1580 pasync_handle->buffer_len = dpl;
1581 pasync_handle->in_use = 1;
1582
1583 return pasync_handle;
1584 }
1585
1586 static unsigned int
beiscsi_hdl_fwd_pdu(struct beiscsi_conn * beiscsi_conn,struct hd_async_context * pasync_ctx,u16 cri)1587 beiscsi_hdl_fwd_pdu(struct beiscsi_conn *beiscsi_conn,
1588 struct hd_async_context *pasync_ctx,
1589 u16 cri)
1590 {
1591 struct iscsi_session *session = beiscsi_conn->conn->session;
1592 struct hd_async_handle *pasync_handle, *plast_handle;
1593 struct beiscsi_hba *phba = beiscsi_conn->phba;
1594 void *phdr = NULL, *pdata = NULL;
1595 u32 dlen = 0, status = 0;
1596 struct list_head *plist;
1597
1598 plist = &pasync_ctx->async_entry[cri].wq.list;
1599 plast_handle = NULL;
1600 list_for_each_entry(pasync_handle, plist, link) {
1601 plast_handle = pasync_handle;
1602 /* get the header, the first entry */
1603 if (!phdr) {
1604 phdr = pasync_handle->pbuffer;
1605 continue;
1606 }
1607 /* use first buffer to collect all the data */
1608 if (!pdata) {
1609 pdata = pasync_handle->pbuffer;
1610 dlen = pasync_handle->buffer_len;
1611 continue;
1612 }
1613 if (!pasync_handle->buffer_len ||
1614 (dlen + pasync_handle->buffer_len) >
1615 pasync_ctx->async_data.buffer_size)
1616 break;
1617 memcpy(pdata + dlen, pasync_handle->pbuffer,
1618 pasync_handle->buffer_len);
1619 dlen += pasync_handle->buffer_len;
1620 }
1621
1622 if (!plast_handle->is_final) {
1623 /* last handle should have final PDU notification from FW */
1624 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_ISCSI,
1625 "BM_%d : cid %u %p fwd async PDU opcode %x with last handle missing - HL%u:DN%u:DR%u\n",
1626 beiscsi_conn->beiscsi_conn_cid, plast_handle,
1627 AMAP_GET_BITS(struct amap_pdu_base, opcode, phdr),
1628 pasync_ctx->async_entry[cri].wq.hdr_len,
1629 pasync_ctx->async_entry[cri].wq.bytes_needed,
1630 pasync_ctx->async_entry[cri].wq.bytes_received);
1631 }
1632 spin_lock_bh(&session->back_lock);
1633 status = beiscsi_complete_pdu(beiscsi_conn, phdr, pdata, dlen);
1634 spin_unlock_bh(&session->back_lock);
1635 beiscsi_hdl_purge_handles(phba, pasync_ctx, cri);
1636 return status;
1637 }
1638
1639 static unsigned int
beiscsi_hdl_gather_pdu(struct beiscsi_conn * beiscsi_conn,struct hd_async_context * pasync_ctx,struct hd_async_handle * pasync_handle)1640 beiscsi_hdl_gather_pdu(struct beiscsi_conn *beiscsi_conn,
1641 struct hd_async_context *pasync_ctx,
1642 struct hd_async_handle *pasync_handle)
1643 {
1644 unsigned int bytes_needed = 0, status = 0;
1645 u16 cri = pasync_handle->cri;
1646 struct cri_wait_queue *wq;
1647 struct beiscsi_hba *phba;
1648 struct pdu_base *ppdu;
1649 char *err = "";
1650
1651 phba = beiscsi_conn->phba;
1652 wq = &pasync_ctx->async_entry[cri].wq;
1653 if (pasync_handle->is_header) {
1654 /* check if PDU hdr is rcv'd when old hdr not completed */
1655 if (wq->hdr_len) {
1656 err = "incomplete";
1657 goto drop_pdu;
1658 }
1659 ppdu = pasync_handle->pbuffer;
1660 bytes_needed = AMAP_GET_BITS(struct amap_pdu_base,
1661 data_len_hi, ppdu);
1662 bytes_needed <<= 16;
1663 bytes_needed |= be16_to_cpu(AMAP_GET_BITS(struct amap_pdu_base,
1664 data_len_lo, ppdu));
1665 wq->hdr_len = pasync_handle->buffer_len;
1666 wq->bytes_received = 0;
1667 wq->bytes_needed = bytes_needed;
1668 list_add_tail(&pasync_handle->link, &wq->list);
1669 if (!bytes_needed)
1670 status = beiscsi_hdl_fwd_pdu(beiscsi_conn,
1671 pasync_ctx, cri);
1672 } else {
1673 /* check if data received has header and is needed */
1674 if (!wq->hdr_len || !wq->bytes_needed) {
1675 err = "header less";
1676 goto drop_pdu;
1677 }
1678 wq->bytes_received += pasync_handle->buffer_len;
1679 /* Something got overwritten? Better catch it here. */
1680 if (wq->bytes_received > wq->bytes_needed) {
1681 err = "overflow";
1682 goto drop_pdu;
1683 }
1684 list_add_tail(&pasync_handle->link, &wq->list);
1685 if (wq->bytes_received == wq->bytes_needed)
1686 status = beiscsi_hdl_fwd_pdu(beiscsi_conn,
1687 pasync_ctx, cri);
1688 }
1689 return status;
1690
1691 drop_pdu:
1692 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_ISCSI,
1693 "BM_%d : cid %u async PDU %s - def-%c:HL%u:DN%u:DR%u\n",
1694 beiscsi_conn->beiscsi_conn_cid, err,
1695 pasync_handle->is_header ? 'H' : 'D',
1696 wq->hdr_len, wq->bytes_needed,
1697 pasync_handle->buffer_len);
1698 /* discard this handle */
1699 beiscsi_hdl_put_handle(pasync_ctx, pasync_handle);
1700 /* free all the other handles in cri_wait_queue */
1701 beiscsi_hdl_purge_handles(phba, pasync_ctx, cri);
1702 /* try continuing */
1703 return status;
1704 }
1705
1706 static void
beiscsi_hdq_post_handles(struct beiscsi_hba * phba,u8 header,u8 ulp_num,u16 nbuf)1707 beiscsi_hdq_post_handles(struct beiscsi_hba *phba,
1708 u8 header, u8 ulp_num, u16 nbuf)
1709 {
1710 struct hd_async_handle *pasync_handle;
1711 struct hd_async_context *pasync_ctx;
1712 struct hwi_controller *phwi_ctrlr;
1713 struct phys_addr *pasync_sge;
1714 u32 ring_id, doorbell = 0;
1715 u32 doorbell_offset;
1716 u16 prod, pi;
1717
1718 phwi_ctrlr = phba->phwi_ctrlr;
1719 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr, ulp_num);
1720 if (header) {
1721 pasync_sge = pasync_ctx->async_header.ring_base;
1722 pi = pasync_ctx->async_header.pi;
1723 ring_id = phwi_ctrlr->default_pdu_hdr[ulp_num].id;
1724 doorbell_offset = phwi_ctrlr->default_pdu_hdr[ulp_num].
1725 doorbell_offset;
1726 } else {
1727 pasync_sge = pasync_ctx->async_data.ring_base;
1728 pi = pasync_ctx->async_data.pi;
1729 ring_id = phwi_ctrlr->default_pdu_data[ulp_num].id;
1730 doorbell_offset = phwi_ctrlr->default_pdu_data[ulp_num].
1731 doorbell_offset;
1732 }
1733
1734 for (prod = 0; prod < nbuf; prod++) {
1735 if (header)
1736 pasync_handle = pasync_ctx->async_entry[pi].header;
1737 else
1738 pasync_handle = pasync_ctx->async_entry[pi].data;
1739 WARN_ON(pasync_handle->is_header != header);
1740 WARN_ON(pasync_handle->index != pi);
1741 /* setup the ring only once */
1742 if (nbuf == pasync_ctx->num_entries) {
1743 /* note hi is lo */
1744 pasync_sge[pi].hi = pasync_handle->pa.u.a32.address_lo;
1745 pasync_sge[pi].lo = pasync_handle->pa.u.a32.address_hi;
1746 }
1747 if (++pi == pasync_ctx->num_entries)
1748 pi = 0;
1749 }
1750
1751 if (header)
1752 pasync_ctx->async_header.pi = pi;
1753 else
1754 pasync_ctx->async_data.pi = pi;
1755
1756 doorbell |= ring_id & DB_DEF_PDU_RING_ID_MASK;
1757 doorbell |= 1 << DB_DEF_PDU_REARM_SHIFT;
1758 doorbell |= 0 << DB_DEF_PDU_EVENT_SHIFT;
1759 doorbell |= (prod & DB_DEF_PDU_CQPROC_MASK) << DB_DEF_PDU_CQPROC_SHIFT;
1760 iowrite32(doorbell, phba->db_va + doorbell_offset);
1761 }
1762
1763 static void
beiscsi_hdq_process_compl(struct beiscsi_conn * beiscsi_conn,struct i_t_dpdu_cqe * pdpdu_cqe)1764 beiscsi_hdq_process_compl(struct beiscsi_conn *beiscsi_conn,
1765 struct i_t_dpdu_cqe *pdpdu_cqe)
1766 {
1767 struct beiscsi_hba *phba = beiscsi_conn->phba;
1768 struct hd_async_handle *pasync_handle = NULL;
1769 struct hd_async_context *pasync_ctx;
1770 struct hwi_controller *phwi_ctrlr;
1771 u8 ulp_num, consumed, header = 0;
1772 u16 cid_cri;
1773
1774 phwi_ctrlr = phba->phwi_ctrlr;
1775 cid_cri = BE_GET_CRI_FROM_CID(beiscsi_conn->beiscsi_conn_cid);
1776 ulp_num = BEISCSI_GET_ULP_FROM_CRI(phwi_ctrlr, cid_cri);
1777 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr, ulp_num);
1778 pasync_handle = beiscsi_hdl_get_handle(beiscsi_conn, pasync_ctx,
1779 pdpdu_cqe, &header);
1780 if (is_chip_be2_be3r(phba))
1781 consumed = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
1782 num_cons, pdpdu_cqe);
1783 else
1784 consumed = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2,
1785 num_cons, pdpdu_cqe);
1786 if (pasync_handle)
1787 beiscsi_hdl_gather_pdu(beiscsi_conn, pasync_ctx, pasync_handle);
1788 /* num_cons indicates number of 8 RQEs consumed */
1789 if (consumed)
1790 beiscsi_hdq_post_handles(phba, header, ulp_num, 8 * consumed);
1791 }
1792
beiscsi_process_mcc_cq(struct beiscsi_hba * phba)1793 void beiscsi_process_mcc_cq(struct beiscsi_hba *phba)
1794 {
1795 struct be_queue_info *mcc_cq;
1796 struct be_mcc_compl *mcc_compl;
1797 unsigned int num_processed = 0;
1798
1799 mcc_cq = &phba->ctrl.mcc_obj.cq;
1800 mcc_compl = queue_tail_node(mcc_cq);
1801 mcc_compl->flags = le32_to_cpu(mcc_compl->flags);
1802 while (mcc_compl->flags & CQE_FLAGS_VALID_MASK) {
1803 if (beiscsi_hba_in_error(phba))
1804 return;
1805
1806 if (num_processed >= 32) {
1807 hwi_ring_cq_db(phba, mcc_cq->id,
1808 num_processed, 0);
1809 num_processed = 0;
1810 }
1811 if (mcc_compl->flags & CQE_FLAGS_ASYNC_MASK) {
1812 beiscsi_process_async_event(phba, mcc_compl);
1813 } else if (mcc_compl->flags & CQE_FLAGS_COMPLETED_MASK) {
1814 beiscsi_process_mcc_compl(&phba->ctrl, mcc_compl);
1815 }
1816
1817 mcc_compl->flags = 0;
1818 queue_tail_inc(mcc_cq);
1819 mcc_compl = queue_tail_node(mcc_cq);
1820 mcc_compl->flags = le32_to_cpu(mcc_compl->flags);
1821 num_processed++;
1822 }
1823
1824 if (num_processed > 0)
1825 hwi_ring_cq_db(phba, mcc_cq->id, num_processed, 1);
1826 }
1827
beiscsi_mcc_work(struct work_struct * work)1828 static void beiscsi_mcc_work(struct work_struct *work)
1829 {
1830 struct be_eq_obj *pbe_eq;
1831 struct beiscsi_hba *phba;
1832
1833 pbe_eq = container_of(work, struct be_eq_obj, mcc_work);
1834 phba = pbe_eq->phba;
1835 beiscsi_process_mcc_cq(phba);
1836 /* rearm EQ for further interrupts */
1837 if (!beiscsi_hba_in_error(phba))
1838 hwi_ring_eq_db(phba, pbe_eq->q.id, 0, 0, 1, 1);
1839 }
1840
1841 /**
1842 * beiscsi_process_cq()- Process the Completion Queue
1843 * @pbe_eq: Event Q on which the Completion has come
1844 * @budget: Max number of events to processed
1845 *
1846 * return
1847 * Number of Completion Entries processed.
1848 **/
beiscsi_process_cq(struct be_eq_obj * pbe_eq,int budget)1849 unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq, int budget)
1850 {
1851 struct be_queue_info *cq;
1852 struct sol_cqe *sol;
1853 unsigned int total = 0;
1854 unsigned int num_processed = 0;
1855 unsigned short code = 0, cid = 0;
1856 uint16_t cri_index = 0;
1857 struct beiscsi_conn *beiscsi_conn;
1858 struct beiscsi_endpoint *beiscsi_ep;
1859 struct iscsi_endpoint *ep;
1860 struct beiscsi_hba *phba;
1861
1862 cq = pbe_eq->cq;
1863 sol = queue_tail_node(cq);
1864 phba = pbe_eq->phba;
1865
1866 while (sol->dw[offsetof(struct amap_sol_cqe, valid) / 32] &
1867 CQE_VALID_MASK) {
1868 if (beiscsi_hba_in_error(phba))
1869 return 0;
1870
1871 be_dws_le_to_cpu(sol, sizeof(struct sol_cqe));
1872
1873 code = (sol->dw[offsetof(struct amap_sol_cqe, code) / 32] &
1874 CQE_CODE_MASK);
1875
1876 /* Get the CID */
1877 if (is_chip_be2_be3r(phba)) {
1878 cid = AMAP_GET_BITS(struct amap_sol_cqe, cid, sol);
1879 } else {
1880 if ((code == DRIVERMSG_NOTIFY) ||
1881 (code == UNSOL_HDR_NOTIFY) ||
1882 (code == UNSOL_DATA_NOTIFY))
1883 cid = AMAP_GET_BITS(
1884 struct amap_i_t_dpdu_cqe_v2,
1885 cid, sol);
1886 else
1887 cid = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1888 cid, sol);
1889 }
1890
1891 cri_index = BE_GET_CRI_FROM_CID(cid);
1892 ep = phba->ep_array[cri_index];
1893
1894 if (ep == NULL) {
1895 /* connection has already been freed
1896 * just move on to next one
1897 */
1898 beiscsi_log(phba, KERN_WARNING,
1899 BEISCSI_LOG_INIT,
1900 "BM_%d : proc cqe of disconn ep: cid %d\n",
1901 cid);
1902 goto proc_next_cqe;
1903 }
1904
1905 beiscsi_ep = ep->dd_data;
1906 beiscsi_conn = beiscsi_ep->conn;
1907
1908 /* replenish cq */
1909 if (num_processed == 32) {
1910 hwi_ring_cq_db(phba, cq->id, 32, 0);
1911 num_processed = 0;
1912 }
1913 total++;
1914
1915 switch (code) {
1916 case SOL_CMD_COMPLETE:
1917 hwi_complete_cmd(beiscsi_conn, phba, sol);
1918 break;
1919 case DRIVERMSG_NOTIFY:
1920 beiscsi_log(phba, KERN_INFO,
1921 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
1922 "BM_%d : Received %s[%d] on CID : %d\n",
1923 cqe_desc[code], code, cid);
1924
1925 hwi_complete_drvr_msgs(beiscsi_conn, phba, sol);
1926 break;
1927 case UNSOL_HDR_NOTIFY:
1928 beiscsi_log(phba, KERN_INFO,
1929 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
1930 "BM_%d : Received %s[%d] on CID : %d\n",
1931 cqe_desc[code], code, cid);
1932
1933 spin_lock_bh(&phba->async_pdu_lock);
1934 beiscsi_hdq_process_compl(beiscsi_conn,
1935 (struct i_t_dpdu_cqe *)sol);
1936 spin_unlock_bh(&phba->async_pdu_lock);
1937 break;
1938 case UNSOL_DATA_NOTIFY:
1939 beiscsi_log(phba, KERN_INFO,
1940 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
1941 "BM_%d : Received %s[%d] on CID : %d\n",
1942 cqe_desc[code], code, cid);
1943
1944 spin_lock_bh(&phba->async_pdu_lock);
1945 beiscsi_hdq_process_compl(beiscsi_conn,
1946 (struct i_t_dpdu_cqe *)sol);
1947 spin_unlock_bh(&phba->async_pdu_lock);
1948 break;
1949 case CXN_INVALIDATE_INDEX_NOTIFY:
1950 case CMD_INVALIDATED_NOTIFY:
1951 case CXN_INVALIDATE_NOTIFY:
1952 beiscsi_log(phba, KERN_ERR,
1953 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
1954 "BM_%d : Ignoring %s[%d] on CID : %d\n",
1955 cqe_desc[code], code, cid);
1956 break;
1957 case CXN_KILLED_HDR_DIGEST_ERR:
1958 case SOL_CMD_KILLED_DATA_DIGEST_ERR:
1959 beiscsi_log(phba, KERN_ERR,
1960 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
1961 "BM_%d : Cmd Notification %s[%d] on CID : %d\n",
1962 cqe_desc[code], code, cid);
1963 break;
1964 case CMD_KILLED_INVALID_STATSN_RCVD:
1965 case CMD_KILLED_INVALID_R2T_RCVD:
1966 case CMD_CXN_KILLED_LUN_INVALID:
1967 case CMD_CXN_KILLED_ICD_INVALID:
1968 case CMD_CXN_KILLED_ITT_INVALID:
1969 case CMD_CXN_KILLED_SEQ_OUTOFORDER:
1970 case CMD_CXN_KILLED_INVALID_DATASN_RCVD:
1971 beiscsi_log(phba, KERN_ERR,
1972 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
1973 "BM_%d : Cmd Notification %s[%d] on CID : %d\n",
1974 cqe_desc[code], code, cid);
1975 break;
1976 case UNSOL_DATA_DIGEST_ERROR_NOTIFY:
1977 beiscsi_log(phba, KERN_ERR,
1978 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
1979 "BM_%d : Dropping %s[%d] on DPDU ring on CID : %d\n",
1980 cqe_desc[code], code, cid);
1981 spin_lock_bh(&phba->async_pdu_lock);
1982 /* driver consumes the entry and drops the contents */
1983 beiscsi_hdq_process_compl(beiscsi_conn,
1984 (struct i_t_dpdu_cqe *)sol);
1985 spin_unlock_bh(&phba->async_pdu_lock);
1986 break;
1987 case CXN_KILLED_PDU_SIZE_EXCEEDS_DSL:
1988 case CXN_KILLED_BURST_LEN_MISMATCH:
1989 case CXN_KILLED_AHS_RCVD:
1990 case CXN_KILLED_UNKNOWN_HDR:
1991 case CXN_KILLED_STALE_ITT_TTT_RCVD:
1992 case CXN_KILLED_INVALID_ITT_TTT_RCVD:
1993 case CXN_KILLED_TIMED_OUT:
1994 case CXN_KILLED_FIN_RCVD:
1995 case CXN_KILLED_RST_SENT:
1996 case CXN_KILLED_RST_RCVD:
1997 case CXN_KILLED_BAD_UNSOL_PDU_RCVD:
1998 case CXN_KILLED_BAD_WRB_INDEX_ERROR:
1999 case CXN_KILLED_OVER_RUN_RESIDUAL:
2000 case CXN_KILLED_UNDER_RUN_RESIDUAL:
2001 case CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN:
2002 beiscsi_log(phba, KERN_ERR,
2003 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
2004 "BM_%d : Event %s[%d] received on CID : %d\n",
2005 cqe_desc[code], code, cid);
2006 if (beiscsi_conn)
2007 iscsi_conn_failure(beiscsi_conn->conn,
2008 ISCSI_ERR_CONN_FAILED);
2009 break;
2010 default:
2011 beiscsi_log(phba, KERN_ERR,
2012 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
2013 "BM_%d : Invalid CQE Event Received Code : %d"
2014 "CID 0x%x...\n",
2015 code, cid);
2016 break;
2017 }
2018
2019 proc_next_cqe:
2020 AMAP_SET_BITS(struct amap_sol_cqe, valid, sol, 0);
2021 queue_tail_inc(cq);
2022 sol = queue_tail_node(cq);
2023 num_processed++;
2024 if (total == budget)
2025 break;
2026 }
2027
2028 hwi_ring_cq_db(phba, cq->id, num_processed, 1);
2029 return total;
2030 }
2031
be_iopoll(struct irq_poll * iop,int budget)2032 static int be_iopoll(struct irq_poll *iop, int budget)
2033 {
2034 unsigned int ret, io_events;
2035 struct beiscsi_hba *phba;
2036 struct be_eq_obj *pbe_eq;
2037 struct be_eq_entry *eqe = NULL;
2038 struct be_queue_info *eq;
2039
2040 pbe_eq = container_of(iop, struct be_eq_obj, iopoll);
2041 phba = pbe_eq->phba;
2042 if (beiscsi_hba_in_error(phba)) {
2043 irq_poll_complete(iop);
2044 return 0;
2045 }
2046
2047 io_events = 0;
2048 eq = &pbe_eq->q;
2049 eqe = queue_tail_node(eq);
2050 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32] &
2051 EQE_VALID_MASK) {
2052 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
2053 queue_tail_inc(eq);
2054 eqe = queue_tail_node(eq);
2055 io_events++;
2056 }
2057 hwi_ring_eq_db(phba, eq->id, 1, io_events, 0, 1);
2058
2059 ret = beiscsi_process_cq(pbe_eq, budget);
2060 pbe_eq->cq_count += ret;
2061 if (ret < budget) {
2062 irq_poll_complete(iop);
2063 beiscsi_log(phba, KERN_INFO,
2064 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
2065 "BM_%d : rearm pbe_eq->q.id =%d ret %d\n",
2066 pbe_eq->q.id, ret);
2067 if (!beiscsi_hba_in_error(phba))
2068 hwi_ring_eq_db(phba, pbe_eq->q.id, 0, 0, 1, 1);
2069 }
2070 return ret;
2071 }
2072
2073 static void
hwi_write_sgl_v2(struct iscsi_wrb * pwrb,struct scatterlist * sg,unsigned int num_sg,struct beiscsi_io_task * io_task)2074 hwi_write_sgl_v2(struct iscsi_wrb *pwrb, struct scatterlist *sg,
2075 unsigned int num_sg, struct beiscsi_io_task *io_task)
2076 {
2077 struct iscsi_sge *psgl;
2078 unsigned int sg_len, index;
2079 unsigned int sge_len = 0;
2080 unsigned long long addr;
2081 struct scatterlist *l_sg;
2082 unsigned int offset;
2083
2084 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, iscsi_bhs_addr_lo, pwrb,
2085 io_task->bhs_pa.u.a32.address_lo);
2086 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, iscsi_bhs_addr_hi, pwrb,
2087 io_task->bhs_pa.u.a32.address_hi);
2088
2089 l_sg = sg;
2090 for (index = 0; (index < num_sg) && (index < 2); index++,
2091 sg = sg_next(sg)) {
2092 if (index == 0) {
2093 sg_len = sg_dma_len(sg);
2094 addr = (u64) sg_dma_address(sg);
2095 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2096 sge0_addr_lo, pwrb,
2097 lower_32_bits(addr));
2098 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2099 sge0_addr_hi, pwrb,
2100 upper_32_bits(addr));
2101 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2102 sge0_len, pwrb,
2103 sg_len);
2104 sge_len = sg_len;
2105 } else {
2106 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_r2t_offset,
2107 pwrb, sge_len);
2108 sg_len = sg_dma_len(sg);
2109 addr = (u64) sg_dma_address(sg);
2110 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2111 sge1_addr_lo, pwrb,
2112 lower_32_bits(addr));
2113 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2114 sge1_addr_hi, pwrb,
2115 upper_32_bits(addr));
2116 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2117 sge1_len, pwrb,
2118 sg_len);
2119 }
2120 }
2121 psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;
2122 memset(psgl, 0, sizeof(*psgl) * BE2_SGE);
2123
2124 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len - 2);
2125
2126 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2127 io_task->bhs_pa.u.a32.address_hi);
2128 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2129 io_task->bhs_pa.u.a32.address_lo);
2130
2131 if (num_sg == 1) {
2132 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb,
2133 1);
2134 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb,
2135 0);
2136 } else if (num_sg == 2) {
2137 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb,
2138 0);
2139 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb,
2140 1);
2141 } else {
2142 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb,
2143 0);
2144 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb,
2145 0);
2146 }
2147
2148 sg = l_sg;
2149 psgl++;
2150 psgl++;
2151 offset = 0;
2152 for (index = 0; index < num_sg; index++, sg = sg_next(sg), psgl++) {
2153 sg_len = sg_dma_len(sg);
2154 addr = (u64) sg_dma_address(sg);
2155 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2156 lower_32_bits(addr));
2157 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2158 upper_32_bits(addr));
2159 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, sg_len);
2160 AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, offset);
2161 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);
2162 offset += sg_len;
2163 }
2164 psgl--;
2165 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);
2166 }
2167
2168 static void
hwi_write_sgl(struct iscsi_wrb * pwrb,struct scatterlist * sg,unsigned int num_sg,struct beiscsi_io_task * io_task)2169 hwi_write_sgl(struct iscsi_wrb *pwrb, struct scatterlist *sg,
2170 unsigned int num_sg, struct beiscsi_io_task *io_task)
2171 {
2172 struct iscsi_sge *psgl;
2173 unsigned int sg_len, index;
2174 unsigned int sge_len = 0;
2175 unsigned long long addr;
2176 struct scatterlist *l_sg;
2177 unsigned int offset;
2178
2179 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_lo, pwrb,
2180 io_task->bhs_pa.u.a32.address_lo);
2181 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_hi, pwrb,
2182 io_task->bhs_pa.u.a32.address_hi);
2183
2184 l_sg = sg;
2185 for (index = 0; (index < num_sg) && (index < 2); index++,
2186 sg = sg_next(sg)) {
2187 if (index == 0) {
2188 sg_len = sg_dma_len(sg);
2189 addr = (u64) sg_dma_address(sg);
2190 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_lo, pwrb,
2191 ((u32)(addr & 0xFFFFFFFF)));
2192 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_hi, pwrb,
2193 ((u32)(addr >> 32)));
2194 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_len, pwrb,
2195 sg_len);
2196 sge_len = sg_len;
2197 } else {
2198 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_r2t_offset,
2199 pwrb, sge_len);
2200 sg_len = sg_dma_len(sg);
2201 addr = (u64) sg_dma_address(sg);
2202 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_addr_lo, pwrb,
2203 ((u32)(addr & 0xFFFFFFFF)));
2204 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_addr_hi, pwrb,
2205 ((u32)(addr >> 32)));
2206 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_len, pwrb,
2207 sg_len);
2208 }
2209 }
2210 psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;
2211 memset(psgl, 0, sizeof(*psgl) * BE2_SGE);
2212
2213 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len - 2);
2214
2215 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2216 io_task->bhs_pa.u.a32.address_hi);
2217 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2218 io_task->bhs_pa.u.a32.address_lo);
2219
2220 if (num_sg == 1) {
2221 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
2222 1);
2223 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
2224 0);
2225 } else if (num_sg == 2) {
2226 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
2227 0);
2228 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
2229 1);
2230 } else {
2231 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
2232 0);
2233 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
2234 0);
2235 }
2236 sg = l_sg;
2237 psgl++;
2238 psgl++;
2239 offset = 0;
2240 for (index = 0; index < num_sg; index++, sg = sg_next(sg), psgl++) {
2241 sg_len = sg_dma_len(sg);
2242 addr = (u64) sg_dma_address(sg);
2243 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2244 (addr & 0xFFFFFFFF));
2245 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2246 (addr >> 32));
2247 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, sg_len);
2248 AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, offset);
2249 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);
2250 offset += sg_len;
2251 }
2252 psgl--;
2253 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);
2254 }
2255
2256 /**
2257 * hwi_write_buffer()- Populate the WRB with task info
2258 * @pwrb: ptr to the WRB entry
2259 * @task: iscsi task which is to be executed
2260 **/
hwi_write_buffer(struct iscsi_wrb * pwrb,struct iscsi_task * task)2261 static int hwi_write_buffer(struct iscsi_wrb *pwrb, struct iscsi_task *task)
2262 {
2263 struct iscsi_sge *psgl;
2264 struct beiscsi_io_task *io_task = task->dd_data;
2265 struct beiscsi_conn *beiscsi_conn = io_task->conn;
2266 struct beiscsi_hba *phba = beiscsi_conn->phba;
2267 uint8_t dsp_value = 0;
2268
2269 io_task->bhs_len = sizeof(struct be_nonio_bhs) - 2;
2270 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_lo, pwrb,
2271 io_task->bhs_pa.u.a32.address_lo);
2272 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_hi, pwrb,
2273 io_task->bhs_pa.u.a32.address_hi);
2274
2275 if (task->data) {
2276
2277 /* Check for the data_count */
2278 dsp_value = (task->data_count) ? 1 : 0;
2279
2280 if (is_chip_be2_be3r(phba))
2281 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp,
2282 pwrb, dsp_value);
2283 else
2284 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp,
2285 pwrb, dsp_value);
2286
2287 /* Map addr only if there is data_count */
2288 if (dsp_value) {
2289 io_task->mtask_addr = dma_map_single(&phba->pcidev->dev,
2290 task->data,
2291 task->data_count,
2292 DMA_TO_DEVICE);
2293 if (dma_mapping_error(&phba->pcidev->dev,
2294 io_task->mtask_addr))
2295 return -ENOMEM;
2296 io_task->mtask_data_count = task->data_count;
2297 } else
2298 io_task->mtask_addr = 0;
2299
2300 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_lo, pwrb,
2301 lower_32_bits(io_task->mtask_addr));
2302 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_hi, pwrb,
2303 upper_32_bits(io_task->mtask_addr));
2304 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_len, pwrb,
2305 task->data_count);
2306
2307 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb, 1);
2308 } else {
2309 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0);
2310 io_task->mtask_addr = 0;
2311 }
2312
2313 psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;
2314
2315 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len);
2316
2317 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2318 io_task->bhs_pa.u.a32.address_hi);
2319 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2320 io_task->bhs_pa.u.a32.address_lo);
2321 if (task->data) {
2322 psgl++;
2323 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, 0);
2324 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, 0);
2325 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, 0);
2326 AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, 0);
2327 AMAP_SET_BITS(struct amap_iscsi_sge, rsvd0, psgl, 0);
2328 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);
2329
2330 psgl++;
2331 if (task->data) {
2332 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2333 lower_32_bits(io_task->mtask_addr));
2334 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2335 upper_32_bits(io_task->mtask_addr));
2336 }
2337 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, 0x106);
2338 }
2339 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);
2340 return 0;
2341 }
2342
2343 /**
2344 * beiscsi_find_mem_req()- Find mem needed
2345 * @phba: ptr to HBA struct
2346 **/
beiscsi_find_mem_req(struct beiscsi_hba * phba)2347 static void beiscsi_find_mem_req(struct beiscsi_hba *phba)
2348 {
2349 uint8_t mem_descr_index, ulp_num;
2350 unsigned int num_async_pdu_buf_pages;
2351 unsigned int num_async_pdu_data_pages, wrb_sz_per_cxn;
2352 unsigned int num_async_pdu_buf_sgl_pages, num_async_pdu_data_sgl_pages;
2353
2354 phba->params.hwi_ws_sz = sizeof(struct hwi_controller);
2355
2356 phba->mem_req[ISCSI_MEM_GLOBAL_HEADER] = 2 *
2357 BE_ISCSI_PDU_HEADER_SIZE;
2358 phba->mem_req[HWI_MEM_ADDN_CONTEXT] =
2359 sizeof(struct hwi_context_memory);
2360
2361
2362 phba->mem_req[HWI_MEM_WRB] = sizeof(struct iscsi_wrb)
2363 * (phba->params.wrbs_per_cxn)
2364 * phba->params.cxns_per_ctrl;
2365 wrb_sz_per_cxn = sizeof(struct wrb_handle) *
2366 (phba->params.wrbs_per_cxn);
2367 phba->mem_req[HWI_MEM_WRBH] = roundup_pow_of_two((wrb_sz_per_cxn) *
2368 phba->params.cxns_per_ctrl);
2369
2370 phba->mem_req[HWI_MEM_SGLH] = sizeof(struct sgl_handle) *
2371 phba->params.icds_per_ctrl;
2372 phba->mem_req[HWI_MEM_SGE] = sizeof(struct iscsi_sge) *
2373 phba->params.num_sge_per_io * phba->params.icds_per_ctrl;
2374 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
2375 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
2376
2377 num_async_pdu_buf_sgl_pages =
2378 PAGES_REQUIRED(BEISCSI_ASYNC_HDQ_SIZE(
2379 phba, ulp_num) *
2380 sizeof(struct phys_addr));
2381
2382 num_async_pdu_buf_pages =
2383 PAGES_REQUIRED(BEISCSI_ASYNC_HDQ_SIZE(
2384 phba, ulp_num) *
2385 phba->params.defpdu_hdr_sz);
2386
2387 num_async_pdu_data_pages =
2388 PAGES_REQUIRED(BEISCSI_ASYNC_HDQ_SIZE(
2389 phba, ulp_num) *
2390 phba->params.defpdu_data_sz);
2391
2392 num_async_pdu_data_sgl_pages =
2393 PAGES_REQUIRED(BEISCSI_ASYNC_HDQ_SIZE(
2394 phba, ulp_num) *
2395 sizeof(struct phys_addr));
2396
2397 mem_descr_index = (HWI_MEM_TEMPLATE_HDR_ULP0 +
2398 (ulp_num * MEM_DESCR_OFFSET));
2399 phba->mem_req[mem_descr_index] =
2400 BEISCSI_GET_CID_COUNT(phba, ulp_num) *
2401 BEISCSI_TEMPLATE_HDR_PER_CXN_SIZE;
2402
2403 mem_descr_index = (HWI_MEM_ASYNC_HEADER_BUF_ULP0 +
2404 (ulp_num * MEM_DESCR_OFFSET));
2405 phba->mem_req[mem_descr_index] =
2406 num_async_pdu_buf_pages *
2407 PAGE_SIZE;
2408
2409 mem_descr_index = (HWI_MEM_ASYNC_DATA_BUF_ULP0 +
2410 (ulp_num * MEM_DESCR_OFFSET));
2411 phba->mem_req[mem_descr_index] =
2412 num_async_pdu_data_pages *
2413 PAGE_SIZE;
2414
2415 mem_descr_index = (HWI_MEM_ASYNC_HEADER_RING_ULP0 +
2416 (ulp_num * MEM_DESCR_OFFSET));
2417 phba->mem_req[mem_descr_index] =
2418 num_async_pdu_buf_sgl_pages *
2419 PAGE_SIZE;
2420
2421 mem_descr_index = (HWI_MEM_ASYNC_DATA_RING_ULP0 +
2422 (ulp_num * MEM_DESCR_OFFSET));
2423 phba->mem_req[mem_descr_index] =
2424 num_async_pdu_data_sgl_pages *
2425 PAGE_SIZE;
2426
2427 mem_descr_index = (HWI_MEM_ASYNC_HEADER_HANDLE_ULP0 +
2428 (ulp_num * MEM_DESCR_OFFSET));
2429 phba->mem_req[mem_descr_index] =
2430 BEISCSI_ASYNC_HDQ_SIZE(phba, ulp_num) *
2431 sizeof(struct hd_async_handle);
2432
2433 mem_descr_index = (HWI_MEM_ASYNC_DATA_HANDLE_ULP0 +
2434 (ulp_num * MEM_DESCR_OFFSET));
2435 phba->mem_req[mem_descr_index] =
2436 BEISCSI_ASYNC_HDQ_SIZE(phba, ulp_num) *
2437 sizeof(struct hd_async_handle);
2438
2439 mem_descr_index = (HWI_MEM_ASYNC_PDU_CONTEXT_ULP0 +
2440 (ulp_num * MEM_DESCR_OFFSET));
2441 phba->mem_req[mem_descr_index] =
2442 sizeof(struct hd_async_context) +
2443 (BEISCSI_ASYNC_HDQ_SIZE(phba, ulp_num) *
2444 sizeof(struct hd_async_entry));
2445 }
2446 }
2447 }
2448
beiscsi_alloc_mem(struct beiscsi_hba * phba)2449 static int beiscsi_alloc_mem(struct beiscsi_hba *phba)
2450 {
2451 dma_addr_t bus_add;
2452 struct hwi_controller *phwi_ctrlr;
2453 struct be_mem_descriptor *mem_descr;
2454 struct mem_array *mem_arr, *mem_arr_orig;
2455 unsigned int i, j, alloc_size, curr_alloc_size;
2456
2457 phba->phwi_ctrlr = kzalloc(phba->params.hwi_ws_sz, GFP_KERNEL);
2458 if (!phba->phwi_ctrlr)
2459 return -ENOMEM;
2460
2461 /* Allocate memory for wrb_context */
2462 phwi_ctrlr = phba->phwi_ctrlr;
2463 phwi_ctrlr->wrb_context = kcalloc(phba->params.cxns_per_ctrl,
2464 sizeof(struct hwi_wrb_context),
2465 GFP_KERNEL);
2466 if (!phwi_ctrlr->wrb_context) {
2467 kfree(phba->phwi_ctrlr);
2468 return -ENOMEM;
2469 }
2470
2471 phba->init_mem = kcalloc(SE_MEM_MAX, sizeof(*mem_descr),
2472 GFP_KERNEL);
2473 if (!phba->init_mem) {
2474 kfree(phwi_ctrlr->wrb_context);
2475 kfree(phba->phwi_ctrlr);
2476 return -ENOMEM;
2477 }
2478
2479 mem_arr_orig = kmalloc_array(BEISCSI_MAX_FRAGS_INIT,
2480 sizeof(*mem_arr_orig),
2481 GFP_KERNEL);
2482 if (!mem_arr_orig) {
2483 kfree(phba->init_mem);
2484 kfree(phwi_ctrlr->wrb_context);
2485 kfree(phba->phwi_ctrlr);
2486 return -ENOMEM;
2487 }
2488
2489 mem_descr = phba->init_mem;
2490 for (i = 0; i < SE_MEM_MAX; i++) {
2491 if (!phba->mem_req[i]) {
2492 mem_descr->mem_array = NULL;
2493 mem_descr++;
2494 continue;
2495 }
2496
2497 j = 0;
2498 mem_arr = mem_arr_orig;
2499 alloc_size = phba->mem_req[i];
2500 memset(mem_arr, 0, sizeof(struct mem_array) *
2501 BEISCSI_MAX_FRAGS_INIT);
2502 curr_alloc_size = min(be_max_phys_size * 1024, alloc_size);
2503 do {
2504 mem_arr->virtual_address =
2505 dma_alloc_coherent(&phba->pcidev->dev,
2506 curr_alloc_size, &bus_add, GFP_KERNEL);
2507 if (!mem_arr->virtual_address) {
2508 if (curr_alloc_size <= BE_MIN_MEM_SIZE)
2509 goto free_mem;
2510 if (curr_alloc_size -
2511 rounddown_pow_of_two(curr_alloc_size))
2512 curr_alloc_size = rounddown_pow_of_two
2513 (curr_alloc_size);
2514 else
2515 curr_alloc_size = curr_alloc_size / 2;
2516 } else {
2517 mem_arr->bus_address.u.
2518 a64.address = (__u64) bus_add;
2519 mem_arr->size = curr_alloc_size;
2520 alloc_size -= curr_alloc_size;
2521 curr_alloc_size = min(be_max_phys_size *
2522 1024, alloc_size);
2523 j++;
2524 mem_arr++;
2525 }
2526 } while (alloc_size);
2527 mem_descr->num_elements = j;
2528 mem_descr->size_in_bytes = phba->mem_req[i];
2529 mem_descr->mem_array = kmalloc_array(j, sizeof(*mem_arr),
2530 GFP_KERNEL);
2531 if (!mem_descr->mem_array)
2532 goto free_mem;
2533
2534 memcpy(mem_descr->mem_array, mem_arr_orig,
2535 sizeof(struct mem_array) * j);
2536 mem_descr++;
2537 }
2538 kfree(mem_arr_orig);
2539 return 0;
2540 free_mem:
2541 mem_descr->num_elements = j;
2542 while ((i) || (j)) {
2543 for (j = mem_descr->num_elements; j > 0; j--) {
2544 dma_free_coherent(&phba->pcidev->dev,
2545 mem_descr->mem_array[j - 1].size,
2546 mem_descr->mem_array[j - 1].
2547 virtual_address,
2548 (unsigned long)mem_descr->
2549 mem_array[j - 1].
2550 bus_address.u.a64.address);
2551 }
2552 if (i) {
2553 i--;
2554 kfree(mem_descr->mem_array);
2555 mem_descr--;
2556 }
2557 }
2558 kfree(mem_arr_orig);
2559 kfree(phba->init_mem);
2560 kfree(phba->phwi_ctrlr->wrb_context);
2561 kfree(phba->phwi_ctrlr);
2562 return -ENOMEM;
2563 }
2564
beiscsi_get_memory(struct beiscsi_hba * phba)2565 static int beiscsi_get_memory(struct beiscsi_hba *phba)
2566 {
2567 beiscsi_find_mem_req(phba);
2568 return beiscsi_alloc_mem(phba);
2569 }
2570
iscsi_init_global_templates(struct beiscsi_hba * phba)2571 static void iscsi_init_global_templates(struct beiscsi_hba *phba)
2572 {
2573 struct pdu_data_out *pdata_out;
2574 struct pdu_nop_out *pnop_out;
2575 struct be_mem_descriptor *mem_descr;
2576
2577 mem_descr = phba->init_mem;
2578 mem_descr += ISCSI_MEM_GLOBAL_HEADER;
2579 pdata_out =
2580 (struct pdu_data_out *)mem_descr->mem_array[0].virtual_address;
2581 memset(pdata_out, 0, BE_ISCSI_PDU_HEADER_SIZE);
2582
2583 AMAP_SET_BITS(struct amap_pdu_data_out, opcode, pdata_out,
2584 IIOC_SCSI_DATA);
2585
2586 pnop_out =
2587 (struct pdu_nop_out *)((unsigned char *)mem_descr->mem_array[0].
2588 virtual_address + BE_ISCSI_PDU_HEADER_SIZE);
2589
2590 memset(pnop_out, 0, BE_ISCSI_PDU_HEADER_SIZE);
2591 AMAP_SET_BITS(struct amap_pdu_nop_out, ttt, pnop_out, 0xFFFFFFFF);
2592 AMAP_SET_BITS(struct amap_pdu_nop_out, f_bit, pnop_out, 1);
2593 AMAP_SET_BITS(struct amap_pdu_nop_out, i_bit, pnop_out, 0);
2594 }
2595
beiscsi_init_wrb_handle(struct beiscsi_hba * phba)2596 static int beiscsi_init_wrb_handle(struct beiscsi_hba *phba)
2597 {
2598 struct be_mem_descriptor *mem_descr_wrbh, *mem_descr_wrb;
2599 struct hwi_context_memory *phwi_ctxt;
2600 struct wrb_handle *pwrb_handle = NULL;
2601 struct hwi_controller *phwi_ctrlr;
2602 struct hwi_wrb_context *pwrb_context;
2603 struct iscsi_wrb *pwrb = NULL;
2604 unsigned int num_cxn_wrbh = 0;
2605 unsigned int num_cxn_wrb = 0, j, idx = 0, index;
2606
2607 mem_descr_wrbh = phba->init_mem;
2608 mem_descr_wrbh += HWI_MEM_WRBH;
2609
2610 mem_descr_wrb = phba->init_mem;
2611 mem_descr_wrb += HWI_MEM_WRB;
2612 phwi_ctrlr = phba->phwi_ctrlr;
2613
2614 /* Allocate memory for WRBQ */
2615 phwi_ctxt = phwi_ctrlr->phwi_ctxt;
2616 phwi_ctxt->be_wrbq = kcalloc(phba->params.cxns_per_ctrl,
2617 sizeof(struct be_queue_info),
2618 GFP_KERNEL);
2619 if (!phwi_ctxt->be_wrbq) {
2620 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
2621 "BM_%d : WRBQ Mem Alloc Failed\n");
2622 return -ENOMEM;
2623 }
2624
2625 for (index = 0; index < phba->params.cxns_per_ctrl; index++) {
2626 pwrb_context = &phwi_ctrlr->wrb_context[index];
2627 pwrb_context->pwrb_handle_base =
2628 kcalloc(phba->params.wrbs_per_cxn,
2629 sizeof(struct wrb_handle *),
2630 GFP_KERNEL);
2631 if (!pwrb_context->pwrb_handle_base) {
2632 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
2633 "BM_%d : Mem Alloc Failed. Failing to load\n");
2634 goto init_wrb_hndl_failed;
2635 }
2636 pwrb_context->pwrb_handle_basestd =
2637 kcalloc(phba->params.wrbs_per_cxn,
2638 sizeof(struct wrb_handle *),
2639 GFP_KERNEL);
2640 if (!pwrb_context->pwrb_handle_basestd) {
2641 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
2642 "BM_%d : Mem Alloc Failed. Failing to load\n");
2643 goto init_wrb_hndl_failed;
2644 }
2645 if (!num_cxn_wrbh) {
2646 pwrb_handle =
2647 mem_descr_wrbh->mem_array[idx].virtual_address;
2648 num_cxn_wrbh = ((mem_descr_wrbh->mem_array[idx].size) /
2649 ((sizeof(struct wrb_handle)) *
2650 phba->params.wrbs_per_cxn));
2651 idx++;
2652 }
2653 pwrb_context->alloc_index = 0;
2654 pwrb_context->wrb_handles_available = 0;
2655 pwrb_context->free_index = 0;
2656
2657 if (num_cxn_wrbh) {
2658 for (j = 0; j < phba->params.wrbs_per_cxn; j++) {
2659 pwrb_context->pwrb_handle_base[j] = pwrb_handle;
2660 pwrb_context->pwrb_handle_basestd[j] =
2661 pwrb_handle;
2662 pwrb_context->wrb_handles_available++;
2663 pwrb_handle->wrb_index = j;
2664 pwrb_handle++;
2665 }
2666 num_cxn_wrbh--;
2667 }
2668 spin_lock_init(&pwrb_context->wrb_lock);
2669 }
2670 idx = 0;
2671 for (index = 0; index < phba->params.cxns_per_ctrl; index++) {
2672 pwrb_context = &phwi_ctrlr->wrb_context[index];
2673 if (!num_cxn_wrb) {
2674 pwrb = mem_descr_wrb->mem_array[idx].virtual_address;
2675 num_cxn_wrb = (mem_descr_wrb->mem_array[idx].size) /
2676 ((sizeof(struct iscsi_wrb) *
2677 phba->params.wrbs_per_cxn));
2678 idx++;
2679 }
2680
2681 if (num_cxn_wrb) {
2682 for (j = 0; j < phba->params.wrbs_per_cxn; j++) {
2683 pwrb_handle = pwrb_context->pwrb_handle_base[j];
2684 pwrb_handle->pwrb = pwrb;
2685 pwrb++;
2686 }
2687 num_cxn_wrb--;
2688 }
2689 }
2690 return 0;
2691 init_wrb_hndl_failed:
2692 for (j = index; j > 0; j--) {
2693 pwrb_context = &phwi_ctrlr->wrb_context[j];
2694 kfree(pwrb_context->pwrb_handle_base);
2695 kfree(pwrb_context->pwrb_handle_basestd);
2696 }
2697 return -ENOMEM;
2698 }
2699
hwi_init_async_pdu_ctx(struct beiscsi_hba * phba)2700 static int hwi_init_async_pdu_ctx(struct beiscsi_hba *phba)
2701 {
2702 uint8_t ulp_num;
2703 struct hwi_controller *phwi_ctrlr;
2704 struct hba_parameters *p = &phba->params;
2705 struct hd_async_context *pasync_ctx;
2706 struct hd_async_handle *pasync_header_h, *pasync_data_h;
2707 unsigned int index, idx, num_per_mem, num_async_data;
2708 struct be_mem_descriptor *mem_descr;
2709
2710 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
2711 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
2712 /* get async_ctx for each ULP */
2713 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2714 mem_descr += (HWI_MEM_ASYNC_PDU_CONTEXT_ULP0 +
2715 (ulp_num * MEM_DESCR_OFFSET));
2716
2717 phwi_ctrlr = phba->phwi_ctrlr;
2718 phwi_ctrlr->phwi_ctxt->pasync_ctx[ulp_num] =
2719 (struct hd_async_context *)
2720 mem_descr->mem_array[0].virtual_address;
2721
2722 pasync_ctx = phwi_ctrlr->phwi_ctxt->pasync_ctx[ulp_num];
2723 memset(pasync_ctx, 0, sizeof(*pasync_ctx));
2724
2725 pasync_ctx->async_entry =
2726 (struct hd_async_entry *)
2727 ((long unsigned int)pasync_ctx +
2728 sizeof(struct hd_async_context));
2729
2730 pasync_ctx->num_entries = BEISCSI_ASYNC_HDQ_SIZE(phba,
2731 ulp_num);
2732 /* setup header buffers */
2733 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2734 mem_descr += HWI_MEM_ASYNC_HEADER_BUF_ULP0 +
2735 (ulp_num * MEM_DESCR_OFFSET);
2736 if (mem_descr->mem_array[0].virtual_address) {
2737 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
2738 "BM_%d : hwi_init_async_pdu_ctx"
2739 " HWI_MEM_ASYNC_HEADER_BUF_ULP%d va=%p\n",
2740 ulp_num,
2741 mem_descr->mem_array[0].
2742 virtual_address);
2743 } else
2744 beiscsi_log(phba, KERN_WARNING,
2745 BEISCSI_LOG_INIT,
2746 "BM_%d : No Virtual address for ULP : %d\n",
2747 ulp_num);
2748
2749 pasync_ctx->async_header.pi = 0;
2750 pasync_ctx->async_header.buffer_size = p->defpdu_hdr_sz;
2751 pasync_ctx->async_header.va_base =
2752 mem_descr->mem_array[0].virtual_address;
2753
2754 pasync_ctx->async_header.pa_base.u.a64.address =
2755 mem_descr->mem_array[0].
2756 bus_address.u.a64.address;
2757
2758 /* setup header buffer sgls */
2759 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2760 mem_descr += HWI_MEM_ASYNC_HEADER_RING_ULP0 +
2761 (ulp_num * MEM_DESCR_OFFSET);
2762 if (mem_descr->mem_array[0].virtual_address) {
2763 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
2764 "BM_%d : hwi_init_async_pdu_ctx"
2765 " HWI_MEM_ASYNC_HEADER_RING_ULP%d va=%p\n",
2766 ulp_num,
2767 mem_descr->mem_array[0].
2768 virtual_address);
2769 } else
2770 beiscsi_log(phba, KERN_WARNING,
2771 BEISCSI_LOG_INIT,
2772 "BM_%d : No Virtual address for ULP : %d\n",
2773 ulp_num);
2774
2775 pasync_ctx->async_header.ring_base =
2776 mem_descr->mem_array[0].virtual_address;
2777
2778 /* setup header buffer handles */
2779 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2780 mem_descr += HWI_MEM_ASYNC_HEADER_HANDLE_ULP0 +
2781 (ulp_num * MEM_DESCR_OFFSET);
2782 if (mem_descr->mem_array[0].virtual_address) {
2783 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
2784 "BM_%d : hwi_init_async_pdu_ctx"
2785 " HWI_MEM_ASYNC_HEADER_HANDLE_ULP%d va=%p\n",
2786 ulp_num,
2787 mem_descr->mem_array[0].
2788 virtual_address);
2789 } else
2790 beiscsi_log(phba, KERN_WARNING,
2791 BEISCSI_LOG_INIT,
2792 "BM_%d : No Virtual address for ULP : %d\n",
2793 ulp_num);
2794
2795 pasync_ctx->async_header.handle_base =
2796 mem_descr->mem_array[0].virtual_address;
2797
2798 /* setup data buffer sgls */
2799 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2800 mem_descr += HWI_MEM_ASYNC_DATA_RING_ULP0 +
2801 (ulp_num * MEM_DESCR_OFFSET);
2802 if (mem_descr->mem_array[0].virtual_address) {
2803 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
2804 "BM_%d : hwi_init_async_pdu_ctx"
2805 " HWI_MEM_ASYNC_DATA_RING_ULP%d va=%p\n",
2806 ulp_num,
2807 mem_descr->mem_array[0].
2808 virtual_address);
2809 } else
2810 beiscsi_log(phba, KERN_WARNING,
2811 BEISCSI_LOG_INIT,
2812 "BM_%d : No Virtual address for ULP : %d\n",
2813 ulp_num);
2814
2815 pasync_ctx->async_data.ring_base =
2816 mem_descr->mem_array[0].virtual_address;
2817
2818 /* setup data buffer handles */
2819 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2820 mem_descr += HWI_MEM_ASYNC_DATA_HANDLE_ULP0 +
2821 (ulp_num * MEM_DESCR_OFFSET);
2822 if (!mem_descr->mem_array[0].virtual_address)
2823 beiscsi_log(phba, KERN_WARNING,
2824 BEISCSI_LOG_INIT,
2825 "BM_%d : No Virtual address for ULP : %d\n",
2826 ulp_num);
2827
2828 pasync_ctx->async_data.handle_base =
2829 mem_descr->mem_array[0].virtual_address;
2830
2831 pasync_header_h =
2832 (struct hd_async_handle *)
2833 pasync_ctx->async_header.handle_base;
2834 pasync_data_h =
2835 (struct hd_async_handle *)
2836 pasync_ctx->async_data.handle_base;
2837
2838 /* setup data buffers */
2839 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2840 mem_descr += HWI_MEM_ASYNC_DATA_BUF_ULP0 +
2841 (ulp_num * MEM_DESCR_OFFSET);
2842 if (mem_descr->mem_array[0].virtual_address) {
2843 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
2844 "BM_%d : hwi_init_async_pdu_ctx"
2845 " HWI_MEM_ASYNC_DATA_BUF_ULP%d va=%p\n",
2846 ulp_num,
2847 mem_descr->mem_array[0].
2848 virtual_address);
2849 } else
2850 beiscsi_log(phba, KERN_WARNING,
2851 BEISCSI_LOG_INIT,
2852 "BM_%d : No Virtual address for ULP : %d\n",
2853 ulp_num);
2854
2855 idx = 0;
2856 pasync_ctx->async_data.pi = 0;
2857 pasync_ctx->async_data.buffer_size = p->defpdu_data_sz;
2858 pasync_ctx->async_data.va_base =
2859 mem_descr->mem_array[idx].virtual_address;
2860 pasync_ctx->async_data.pa_base.u.a64.address =
2861 mem_descr->mem_array[idx].
2862 bus_address.u.a64.address;
2863
2864 num_async_data = ((mem_descr->mem_array[idx].size) /
2865 phba->params.defpdu_data_sz);
2866 num_per_mem = 0;
2867
2868 for (index = 0; index < BEISCSI_ASYNC_HDQ_SIZE
2869 (phba, ulp_num); index++) {
2870 pasync_header_h->cri = -1;
2871 pasync_header_h->is_header = 1;
2872 pasync_header_h->index = index;
2873 INIT_LIST_HEAD(&pasync_header_h->link);
2874 pasync_header_h->pbuffer =
2875 (void *)((unsigned long)
2876 (pasync_ctx->
2877 async_header.va_base) +
2878 (p->defpdu_hdr_sz * index));
2879
2880 pasync_header_h->pa.u.a64.address =
2881 pasync_ctx->async_header.pa_base.u.a64.
2882 address + (p->defpdu_hdr_sz * index);
2883
2884 pasync_ctx->async_entry[index].header =
2885 pasync_header_h;
2886 pasync_header_h++;
2887 INIT_LIST_HEAD(&pasync_ctx->async_entry[index].
2888 wq.list);
2889
2890 pasync_data_h->cri = -1;
2891 pasync_data_h->is_header = 0;
2892 pasync_data_h->index = index;
2893 INIT_LIST_HEAD(&pasync_data_h->link);
2894
2895 if (!num_async_data) {
2896 num_per_mem = 0;
2897 idx++;
2898 pasync_ctx->async_data.va_base =
2899 mem_descr->mem_array[idx].
2900 virtual_address;
2901 pasync_ctx->async_data.pa_base.u.
2902 a64.address =
2903 mem_descr->mem_array[idx].
2904 bus_address.u.a64.address;
2905 num_async_data =
2906 ((mem_descr->mem_array[idx].
2907 size) /
2908 phba->params.defpdu_data_sz);
2909 }
2910 pasync_data_h->pbuffer =
2911 (void *)((unsigned long)
2912 (pasync_ctx->async_data.va_base) +
2913 (p->defpdu_data_sz * num_per_mem));
2914
2915 pasync_data_h->pa.u.a64.address =
2916 pasync_ctx->async_data.pa_base.u.a64.
2917 address + (p->defpdu_data_sz *
2918 num_per_mem);
2919 num_per_mem++;
2920 num_async_data--;
2921
2922 pasync_ctx->async_entry[index].data =
2923 pasync_data_h;
2924 pasync_data_h++;
2925 }
2926 }
2927 }
2928
2929 return 0;
2930 }
2931
2932 static int
be_sgl_create_contiguous(void * virtual_address,u64 physical_address,u32 length,struct be_dma_mem * sgl)2933 be_sgl_create_contiguous(void *virtual_address,
2934 u64 physical_address, u32 length,
2935 struct be_dma_mem *sgl)
2936 {
2937 WARN_ON(!virtual_address);
2938 WARN_ON(!physical_address);
2939 WARN_ON(!length);
2940 WARN_ON(!sgl);
2941
2942 sgl->va = virtual_address;
2943 sgl->dma = (unsigned long)physical_address;
2944 sgl->size = length;
2945
2946 return 0;
2947 }
2948
be_sgl_destroy_contiguous(struct be_dma_mem * sgl)2949 static void be_sgl_destroy_contiguous(struct be_dma_mem *sgl)
2950 {
2951 memset(sgl, 0, sizeof(*sgl));
2952 }
2953
2954 static void
hwi_build_be_sgl_arr(struct beiscsi_hba * phba,struct mem_array * pmem,struct be_dma_mem * sgl)2955 hwi_build_be_sgl_arr(struct beiscsi_hba *phba,
2956 struct mem_array *pmem, struct be_dma_mem *sgl)
2957 {
2958 if (sgl->va)
2959 be_sgl_destroy_contiguous(sgl);
2960
2961 be_sgl_create_contiguous(pmem->virtual_address,
2962 pmem->bus_address.u.a64.address,
2963 pmem->size, sgl);
2964 }
2965
2966 static void
hwi_build_be_sgl_by_offset(struct beiscsi_hba * phba,struct mem_array * pmem,struct be_dma_mem * sgl)2967 hwi_build_be_sgl_by_offset(struct beiscsi_hba *phba,
2968 struct mem_array *pmem, struct be_dma_mem *sgl)
2969 {
2970 if (sgl->va)
2971 be_sgl_destroy_contiguous(sgl);
2972
2973 be_sgl_create_contiguous((unsigned char *)pmem->virtual_address,
2974 pmem->bus_address.u.a64.address,
2975 pmem->size, sgl);
2976 }
2977
be_fill_queue(struct be_queue_info * q,u16 len,u16 entry_size,void * vaddress)2978 static int be_fill_queue(struct be_queue_info *q,
2979 u16 len, u16 entry_size, void *vaddress)
2980 {
2981 struct be_dma_mem *mem = &q->dma_mem;
2982
2983 memset(q, 0, sizeof(*q));
2984 q->len = len;
2985 q->entry_size = entry_size;
2986 mem->size = len * entry_size;
2987 mem->va = vaddress;
2988 if (!mem->va)
2989 return -ENOMEM;
2990 memset(mem->va, 0, mem->size);
2991 return 0;
2992 }
2993
beiscsi_create_eqs(struct beiscsi_hba * phba,struct hwi_context_memory * phwi_context)2994 static int beiscsi_create_eqs(struct beiscsi_hba *phba,
2995 struct hwi_context_memory *phwi_context)
2996 {
2997 int ret = -ENOMEM, eq_for_mcc;
2998 unsigned int i, num_eq_pages;
2999 struct be_queue_info *eq;
3000 struct be_dma_mem *mem;
3001 void *eq_vaddress;
3002 dma_addr_t paddr;
3003
3004 num_eq_pages = PAGES_REQUIRED(phba->params.num_eq_entries * \
3005 sizeof(struct be_eq_entry));
3006
3007 if (phba->pcidev->msix_enabled)
3008 eq_for_mcc = 1;
3009 else
3010 eq_for_mcc = 0;
3011 for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) {
3012 eq = &phwi_context->be_eq[i].q;
3013 mem = &eq->dma_mem;
3014 phwi_context->be_eq[i].phba = phba;
3015 eq_vaddress = dma_alloc_coherent(&phba->pcidev->dev,
3016 num_eq_pages * PAGE_SIZE,
3017 &paddr, GFP_KERNEL);
3018 if (!eq_vaddress) {
3019 ret = -ENOMEM;
3020 goto create_eq_error;
3021 }
3022
3023 mem->va = eq_vaddress;
3024 ret = be_fill_queue(eq, phba->params.num_eq_entries,
3025 sizeof(struct be_eq_entry), eq_vaddress);
3026 if (ret) {
3027 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3028 "BM_%d : be_fill_queue Failed for EQ\n");
3029 goto create_eq_error;
3030 }
3031
3032 mem->dma = paddr;
3033 ret = beiscsi_cmd_eq_create(&phba->ctrl, eq,
3034 BEISCSI_EQ_DELAY_DEF);
3035 if (ret) {
3036 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3037 "BM_%d : beiscsi_cmd_eq_create"
3038 "Failed for EQ\n");
3039 goto create_eq_error;
3040 }
3041
3042 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3043 "BM_%d : eqid = %d\n",
3044 phwi_context->be_eq[i].q.id);
3045 }
3046 return 0;
3047
3048 create_eq_error:
3049 for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) {
3050 eq = &phwi_context->be_eq[i].q;
3051 mem = &eq->dma_mem;
3052 if (mem->va)
3053 dma_free_coherent(&phba->pcidev->dev, num_eq_pages
3054 * PAGE_SIZE,
3055 mem->va, mem->dma);
3056 }
3057 return ret;
3058 }
3059
beiscsi_create_cqs(struct beiscsi_hba * phba,struct hwi_context_memory * phwi_context)3060 static int beiscsi_create_cqs(struct beiscsi_hba *phba,
3061 struct hwi_context_memory *phwi_context)
3062 {
3063 unsigned int i, num_cq_pages;
3064 struct be_queue_info *cq, *eq;
3065 struct be_dma_mem *mem;
3066 struct be_eq_obj *pbe_eq;
3067 void *cq_vaddress;
3068 int ret = -ENOMEM;
3069 dma_addr_t paddr;
3070
3071 num_cq_pages = PAGES_REQUIRED(phba->params.num_cq_entries * \
3072 sizeof(struct sol_cqe));
3073
3074 for (i = 0; i < phba->num_cpus; i++) {
3075 cq = &phwi_context->be_cq[i];
3076 eq = &phwi_context->be_eq[i].q;
3077 pbe_eq = &phwi_context->be_eq[i];
3078 pbe_eq->cq = cq;
3079 pbe_eq->phba = phba;
3080 mem = &cq->dma_mem;
3081 cq_vaddress = dma_alloc_coherent(&phba->pcidev->dev,
3082 num_cq_pages * PAGE_SIZE,
3083 &paddr, GFP_KERNEL);
3084 if (!cq_vaddress) {
3085 ret = -ENOMEM;
3086 goto create_cq_error;
3087 }
3088
3089 ret = be_fill_queue(cq, phba->params.num_cq_entries,
3090 sizeof(struct sol_cqe), cq_vaddress);
3091 if (ret) {
3092 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3093 "BM_%d : be_fill_queue Failed "
3094 "for ISCSI CQ\n");
3095 goto create_cq_error;
3096 }
3097
3098 mem->dma = paddr;
3099 ret = beiscsi_cmd_cq_create(&phba->ctrl, cq, eq, false,
3100 false, 0);
3101 if (ret) {
3102 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3103 "BM_%d : beiscsi_cmd_eq_create"
3104 "Failed for ISCSI CQ\n");
3105 goto create_cq_error;
3106 }
3107 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3108 "BM_%d : iscsi cq_id is %d for eq_id %d\n"
3109 "iSCSI CQ CREATED\n", cq->id, eq->id);
3110 }
3111 return 0;
3112
3113 create_cq_error:
3114 for (i = 0; i < phba->num_cpus; i++) {
3115 cq = &phwi_context->be_cq[i];
3116 mem = &cq->dma_mem;
3117 if (mem->va)
3118 dma_free_coherent(&phba->pcidev->dev, num_cq_pages
3119 * PAGE_SIZE,
3120 mem->va, mem->dma);
3121 }
3122 return ret;
3123 }
3124
3125 static int
beiscsi_create_def_hdr(struct beiscsi_hba * phba,struct hwi_context_memory * phwi_context,struct hwi_controller * phwi_ctrlr,unsigned int def_pdu_ring_sz,uint8_t ulp_num)3126 beiscsi_create_def_hdr(struct beiscsi_hba *phba,
3127 struct hwi_context_memory *phwi_context,
3128 struct hwi_controller *phwi_ctrlr,
3129 unsigned int def_pdu_ring_sz, uint8_t ulp_num)
3130 {
3131 unsigned int idx;
3132 int ret;
3133 struct be_queue_info *dq, *cq;
3134 struct be_dma_mem *mem;
3135 struct be_mem_descriptor *mem_descr;
3136 void *dq_vaddress;
3137
3138 idx = 0;
3139 dq = &phwi_context->be_def_hdrq[ulp_num];
3140 cq = &phwi_context->be_cq[0];
3141 mem = &dq->dma_mem;
3142 mem_descr = phba->init_mem;
3143 mem_descr += HWI_MEM_ASYNC_HEADER_RING_ULP0 +
3144 (ulp_num * MEM_DESCR_OFFSET);
3145 dq_vaddress = mem_descr->mem_array[idx].virtual_address;
3146 ret = be_fill_queue(dq, mem_descr->mem_array[0].size /
3147 sizeof(struct phys_addr),
3148 sizeof(struct phys_addr), dq_vaddress);
3149 if (ret) {
3150 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3151 "BM_%d : be_fill_queue Failed for DEF PDU HDR on ULP : %d\n",
3152 ulp_num);
3153
3154 return ret;
3155 }
3156 mem->dma = (unsigned long)mem_descr->mem_array[idx].
3157 bus_address.u.a64.address;
3158 ret = be_cmd_create_default_pdu_queue(&phba->ctrl, cq, dq,
3159 def_pdu_ring_sz,
3160 phba->params.defpdu_hdr_sz,
3161 BEISCSI_DEFQ_HDR, ulp_num);
3162 if (ret) {
3163 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3164 "BM_%d : be_cmd_create_default_pdu_queue Failed DEFHDR on ULP : %d\n",
3165 ulp_num);
3166
3167 return ret;
3168 }
3169
3170 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3171 "BM_%d : iscsi hdr def pdu id for ULP : %d is %d\n",
3172 ulp_num,
3173 phwi_context->be_def_hdrq[ulp_num].id);
3174 return 0;
3175 }
3176
3177 static int
beiscsi_create_def_data(struct beiscsi_hba * phba,struct hwi_context_memory * phwi_context,struct hwi_controller * phwi_ctrlr,unsigned int def_pdu_ring_sz,uint8_t ulp_num)3178 beiscsi_create_def_data(struct beiscsi_hba *phba,
3179 struct hwi_context_memory *phwi_context,
3180 struct hwi_controller *phwi_ctrlr,
3181 unsigned int def_pdu_ring_sz, uint8_t ulp_num)
3182 {
3183 unsigned int idx;
3184 int ret;
3185 struct be_queue_info *dataq, *cq;
3186 struct be_dma_mem *mem;
3187 struct be_mem_descriptor *mem_descr;
3188 void *dq_vaddress;
3189
3190 idx = 0;
3191 dataq = &phwi_context->be_def_dataq[ulp_num];
3192 cq = &phwi_context->be_cq[0];
3193 mem = &dataq->dma_mem;
3194 mem_descr = phba->init_mem;
3195 mem_descr += HWI_MEM_ASYNC_DATA_RING_ULP0 +
3196 (ulp_num * MEM_DESCR_OFFSET);
3197 dq_vaddress = mem_descr->mem_array[idx].virtual_address;
3198 ret = be_fill_queue(dataq, mem_descr->mem_array[0].size /
3199 sizeof(struct phys_addr),
3200 sizeof(struct phys_addr), dq_vaddress);
3201 if (ret) {
3202 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3203 "BM_%d : be_fill_queue Failed for DEF PDU "
3204 "DATA on ULP : %d\n",
3205 ulp_num);
3206
3207 return ret;
3208 }
3209 mem->dma = (unsigned long)mem_descr->mem_array[idx].
3210 bus_address.u.a64.address;
3211 ret = be_cmd_create_default_pdu_queue(&phba->ctrl, cq, dataq,
3212 def_pdu_ring_sz,
3213 phba->params.defpdu_data_sz,
3214 BEISCSI_DEFQ_DATA, ulp_num);
3215 if (ret) {
3216 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3217 "BM_%d be_cmd_create_default_pdu_queue"
3218 " Failed for DEF PDU DATA on ULP : %d\n",
3219 ulp_num);
3220 return ret;
3221 }
3222
3223 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3224 "BM_%d : iscsi def data id on ULP : %d is %d\n",
3225 ulp_num,
3226 phwi_context->be_def_dataq[ulp_num].id);
3227
3228 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3229 "BM_%d : DEFAULT PDU DATA RING CREATED"
3230 "on ULP : %d\n", ulp_num);
3231 return 0;
3232 }
3233
3234
3235 static int
beiscsi_post_template_hdr(struct beiscsi_hba * phba)3236 beiscsi_post_template_hdr(struct beiscsi_hba *phba)
3237 {
3238 struct be_mem_descriptor *mem_descr;
3239 struct mem_array *pm_arr;
3240 struct be_dma_mem sgl;
3241 int status, ulp_num;
3242
3243 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
3244 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
3245 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
3246 mem_descr += HWI_MEM_TEMPLATE_HDR_ULP0 +
3247 (ulp_num * MEM_DESCR_OFFSET);
3248 pm_arr = mem_descr->mem_array;
3249
3250 hwi_build_be_sgl_arr(phba, pm_arr, &sgl);
3251 status = be_cmd_iscsi_post_template_hdr(
3252 &phba->ctrl, &sgl);
3253
3254 if (status != 0) {
3255 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3256 "BM_%d : Post Template HDR Failed for"
3257 "ULP_%d\n", ulp_num);
3258 return status;
3259 }
3260
3261 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3262 "BM_%d : Template HDR Pages Posted for"
3263 "ULP_%d\n", ulp_num);
3264 }
3265 }
3266 return 0;
3267 }
3268
3269 static int
beiscsi_post_pages(struct beiscsi_hba * phba)3270 beiscsi_post_pages(struct beiscsi_hba *phba)
3271 {
3272 struct be_mem_descriptor *mem_descr;
3273 struct mem_array *pm_arr;
3274 unsigned int page_offset, i;
3275 struct be_dma_mem sgl;
3276 int status, ulp_num = 0;
3277
3278 mem_descr = phba->init_mem;
3279 mem_descr += HWI_MEM_SGE;
3280 pm_arr = mem_descr->mem_array;
3281
3282 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)
3283 if (test_bit(ulp_num, &phba->fw_config.ulp_supported))
3284 break;
3285
3286 page_offset = (sizeof(struct iscsi_sge) * phba->params.num_sge_per_io *
3287 phba->fw_config.iscsi_icd_start[ulp_num]) / PAGE_SIZE;
3288 for (i = 0; i < mem_descr->num_elements; i++) {
3289 hwi_build_be_sgl_arr(phba, pm_arr, &sgl);
3290 status = be_cmd_iscsi_post_sgl_pages(&phba->ctrl, &sgl,
3291 page_offset,
3292 (pm_arr->size / PAGE_SIZE));
3293 page_offset += pm_arr->size / PAGE_SIZE;
3294 if (status != 0) {
3295 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3296 "BM_%d : post sgl failed.\n");
3297 return status;
3298 }
3299 pm_arr++;
3300 }
3301 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3302 "BM_%d : POSTED PAGES\n");
3303 return 0;
3304 }
3305
be_queue_free(struct beiscsi_hba * phba,struct be_queue_info * q)3306 static void be_queue_free(struct beiscsi_hba *phba, struct be_queue_info *q)
3307 {
3308 struct be_dma_mem *mem = &q->dma_mem;
3309 if (mem->va) {
3310 dma_free_coherent(&phba->pcidev->dev, mem->size,
3311 mem->va, mem->dma);
3312 mem->va = NULL;
3313 }
3314 }
3315
be_queue_alloc(struct beiscsi_hba * phba,struct be_queue_info * q,u16 len,u16 entry_size)3316 static int be_queue_alloc(struct beiscsi_hba *phba, struct be_queue_info *q,
3317 u16 len, u16 entry_size)
3318 {
3319 struct be_dma_mem *mem = &q->dma_mem;
3320
3321 memset(q, 0, sizeof(*q));
3322 q->len = len;
3323 q->entry_size = entry_size;
3324 mem->size = len * entry_size;
3325 mem->va = dma_alloc_coherent(&phba->pcidev->dev, mem->size, &mem->dma,
3326 GFP_KERNEL);
3327 if (!mem->va)
3328 return -ENOMEM;
3329 return 0;
3330 }
3331
3332 static int
beiscsi_create_wrb_rings(struct beiscsi_hba * phba,struct hwi_context_memory * phwi_context,struct hwi_controller * phwi_ctrlr)3333 beiscsi_create_wrb_rings(struct beiscsi_hba *phba,
3334 struct hwi_context_memory *phwi_context,
3335 struct hwi_controller *phwi_ctrlr)
3336 {
3337 unsigned int num_wrb_rings;
3338 u64 pa_addr_lo;
3339 unsigned int idx, num, i, ulp_num;
3340 struct mem_array *pwrb_arr;
3341 void *wrb_vaddr;
3342 struct be_dma_mem sgl;
3343 struct be_mem_descriptor *mem_descr;
3344 struct hwi_wrb_context *pwrb_context;
3345 int status;
3346 uint8_t ulp_count = 0, ulp_base_num = 0;
3347 uint16_t cid_count_ulp[BEISCSI_ULP_COUNT] = { 0 };
3348
3349 idx = 0;
3350 mem_descr = phba->init_mem;
3351 mem_descr += HWI_MEM_WRB;
3352 pwrb_arr = kmalloc_array(phba->params.cxns_per_ctrl,
3353 sizeof(*pwrb_arr),
3354 GFP_KERNEL);
3355 if (!pwrb_arr) {
3356 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3357 "BM_%d : Memory alloc failed in create wrb ring.\n");
3358 return -ENOMEM;
3359 }
3360 wrb_vaddr = mem_descr->mem_array[idx].virtual_address;
3361 pa_addr_lo = mem_descr->mem_array[idx].bus_address.u.a64.address;
3362 num_wrb_rings = mem_descr->mem_array[idx].size /
3363 (phba->params.wrbs_per_cxn * sizeof(struct iscsi_wrb));
3364
3365 for (num = 0; num < phba->params.cxns_per_ctrl; num++) {
3366 if (num_wrb_rings) {
3367 pwrb_arr[num].virtual_address = wrb_vaddr;
3368 pwrb_arr[num].bus_address.u.a64.address = pa_addr_lo;
3369 pwrb_arr[num].size = phba->params.wrbs_per_cxn *
3370 sizeof(struct iscsi_wrb);
3371 wrb_vaddr += pwrb_arr[num].size;
3372 pa_addr_lo += pwrb_arr[num].size;
3373 num_wrb_rings--;
3374 } else {
3375 idx++;
3376 wrb_vaddr = mem_descr->mem_array[idx].virtual_address;
3377 pa_addr_lo = mem_descr->mem_array[idx].\
3378 bus_address.u.a64.address;
3379 num_wrb_rings = mem_descr->mem_array[idx].size /
3380 (phba->params.wrbs_per_cxn *
3381 sizeof(struct iscsi_wrb));
3382 pwrb_arr[num].virtual_address = wrb_vaddr;
3383 pwrb_arr[num].bus_address.u.a64.address\
3384 = pa_addr_lo;
3385 pwrb_arr[num].size = phba->params.wrbs_per_cxn *
3386 sizeof(struct iscsi_wrb);
3387 wrb_vaddr += pwrb_arr[num].size;
3388 pa_addr_lo += pwrb_arr[num].size;
3389 num_wrb_rings--;
3390 }
3391 }
3392
3393 /* Get the ULP Count */
3394 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)
3395 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
3396 ulp_count++;
3397 ulp_base_num = ulp_num;
3398 cid_count_ulp[ulp_num] =
3399 BEISCSI_GET_CID_COUNT(phba, ulp_num);
3400 }
3401
3402 for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
3403 if (ulp_count > 1) {
3404 ulp_base_num = (ulp_base_num + 1) % BEISCSI_ULP_COUNT;
3405
3406 if (!cid_count_ulp[ulp_base_num])
3407 ulp_base_num = (ulp_base_num + 1) %
3408 BEISCSI_ULP_COUNT;
3409
3410 cid_count_ulp[ulp_base_num]--;
3411 }
3412
3413
3414 hwi_build_be_sgl_by_offset(phba, &pwrb_arr[i], &sgl);
3415 status = be_cmd_wrbq_create(&phba->ctrl, &sgl,
3416 &phwi_context->be_wrbq[i],
3417 &phwi_ctrlr->wrb_context[i],
3418 ulp_base_num);
3419 if (status != 0) {
3420 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3421 "BM_%d : wrbq create failed.");
3422 kfree(pwrb_arr);
3423 return status;
3424 }
3425 pwrb_context = &phwi_ctrlr->wrb_context[i];
3426 BE_SET_CID_TO_CRI(i, pwrb_context->cid);
3427 }
3428 kfree(pwrb_arr);
3429 return 0;
3430 }
3431
free_wrb_handles(struct beiscsi_hba * phba)3432 static void free_wrb_handles(struct beiscsi_hba *phba)
3433 {
3434 unsigned int index;
3435 struct hwi_controller *phwi_ctrlr;
3436 struct hwi_wrb_context *pwrb_context;
3437
3438 phwi_ctrlr = phba->phwi_ctrlr;
3439 for (index = 0; index < phba->params.cxns_per_ctrl; index++) {
3440 pwrb_context = &phwi_ctrlr->wrb_context[index];
3441 kfree(pwrb_context->pwrb_handle_base);
3442 kfree(pwrb_context->pwrb_handle_basestd);
3443 }
3444 }
3445
be_mcc_queues_destroy(struct beiscsi_hba * phba)3446 static void be_mcc_queues_destroy(struct beiscsi_hba *phba)
3447 {
3448 struct be_ctrl_info *ctrl = &phba->ctrl;
3449 struct be_dma_mem *ptag_mem;
3450 struct be_queue_info *q;
3451 int i, tag;
3452
3453 q = &phba->ctrl.mcc_obj.q;
3454 for (i = 0; i < MAX_MCC_CMD; i++) {
3455 tag = i + 1;
3456 if (!test_bit(MCC_TAG_STATE_RUNNING,
3457 &ctrl->ptag_state[tag].tag_state))
3458 continue;
3459
3460 if (test_bit(MCC_TAG_STATE_TIMEOUT,
3461 &ctrl->ptag_state[tag].tag_state)) {
3462 ptag_mem = &ctrl->ptag_state[tag].tag_mem_state;
3463 if (ptag_mem->size) {
3464 dma_free_coherent(&ctrl->pdev->dev,
3465 ptag_mem->size,
3466 ptag_mem->va,
3467 ptag_mem->dma);
3468 ptag_mem->size = 0;
3469 }
3470 continue;
3471 }
3472 /**
3473 * If MCC is still active and waiting then wake up the process.
3474 * We are here only because port is going offline. The process
3475 * sees that (BEISCSI_HBA_ONLINE is cleared) and EIO error is
3476 * returned for the operation and allocated memory cleaned up.
3477 */
3478 if (waitqueue_active(&ctrl->mcc_wait[tag])) {
3479 ctrl->mcc_tag_status[tag] = MCC_STATUS_FAILED;
3480 ctrl->mcc_tag_status[tag] |= CQE_VALID_MASK;
3481 wake_up_interruptible(&ctrl->mcc_wait[tag]);
3482 /*
3483 * Control tag info gets reinitialized in enable
3484 * so wait for the process to clear running state.
3485 */
3486 while (test_bit(MCC_TAG_STATE_RUNNING,
3487 &ctrl->ptag_state[tag].tag_state))
3488 schedule_timeout_uninterruptible(HZ);
3489 }
3490 /**
3491 * For MCC with tag_states MCC_TAG_STATE_ASYNC and
3492 * MCC_TAG_STATE_IGNORE nothing needs to done.
3493 */
3494 }
3495 if (q->created) {
3496 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_MCCQ);
3497 be_queue_free(phba, q);
3498 }
3499
3500 q = &phba->ctrl.mcc_obj.cq;
3501 if (q->created) {
3502 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_CQ);
3503 be_queue_free(phba, q);
3504 }
3505 }
3506
be_mcc_queues_create(struct beiscsi_hba * phba,struct hwi_context_memory * phwi_context)3507 static int be_mcc_queues_create(struct beiscsi_hba *phba,
3508 struct hwi_context_memory *phwi_context)
3509 {
3510 struct be_queue_info *q, *cq;
3511 struct be_ctrl_info *ctrl = &phba->ctrl;
3512
3513 /* Alloc MCC compl queue */
3514 cq = &phba->ctrl.mcc_obj.cq;
3515 if (be_queue_alloc(phba, cq, MCC_CQ_LEN,
3516 sizeof(struct be_mcc_compl)))
3517 goto err;
3518 /* Ask BE to create MCC compl queue; */
3519 if (phba->pcidev->msix_enabled) {
3520 if (beiscsi_cmd_cq_create(ctrl, cq,
3521 &phwi_context->be_eq[phba->num_cpus].q,
3522 false, true, 0))
3523 goto mcc_cq_free;
3524 } else {
3525 if (beiscsi_cmd_cq_create(ctrl, cq, &phwi_context->be_eq[0].q,
3526 false, true, 0))
3527 goto mcc_cq_free;
3528 }
3529
3530 /* Alloc MCC queue */
3531 q = &phba->ctrl.mcc_obj.q;
3532 if (be_queue_alloc(phba, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
3533 goto mcc_cq_destroy;
3534
3535 /* Ask BE to create MCC queue */
3536 if (beiscsi_cmd_mccq_create(phba, q, cq))
3537 goto mcc_q_free;
3538
3539 return 0;
3540
3541 mcc_q_free:
3542 be_queue_free(phba, q);
3543 mcc_cq_destroy:
3544 beiscsi_cmd_q_destroy(ctrl, cq, QTYPE_CQ);
3545 mcc_cq_free:
3546 be_queue_free(phba, cq);
3547 err:
3548 return -ENOMEM;
3549 }
3550
be2iscsi_enable_msix(struct beiscsi_hba * phba)3551 static void be2iscsi_enable_msix(struct beiscsi_hba *phba)
3552 {
3553 int nvec = 1;
3554
3555 switch (phba->generation) {
3556 case BE_GEN2:
3557 case BE_GEN3:
3558 nvec = BEISCSI_MAX_NUM_CPUS + 1;
3559 break;
3560 case BE_GEN4:
3561 nvec = phba->fw_config.eqid_count;
3562 break;
3563 default:
3564 nvec = 2;
3565 break;
3566 }
3567
3568 /* if eqid_count == 1 fall back to INTX */
3569 if (enable_msix && nvec > 1) {
3570 struct irq_affinity desc = { .post_vectors = 1 };
3571
3572 if (pci_alloc_irq_vectors_affinity(phba->pcidev, 2, nvec,
3573 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY, &desc) < 0) {
3574 phba->num_cpus = nvec - 1;
3575 return;
3576 }
3577 }
3578
3579 phba->num_cpus = 1;
3580 }
3581
hwi_purge_eq(struct beiscsi_hba * phba)3582 static void hwi_purge_eq(struct beiscsi_hba *phba)
3583 {
3584 struct hwi_controller *phwi_ctrlr;
3585 struct hwi_context_memory *phwi_context;
3586 struct be_queue_info *eq;
3587 struct be_eq_entry *eqe = NULL;
3588 int i, eq_msix;
3589 unsigned int num_processed;
3590
3591 if (beiscsi_hba_in_error(phba))
3592 return;
3593
3594 phwi_ctrlr = phba->phwi_ctrlr;
3595 phwi_context = phwi_ctrlr->phwi_ctxt;
3596 if (phba->pcidev->msix_enabled)
3597 eq_msix = 1;
3598 else
3599 eq_msix = 0;
3600
3601 for (i = 0; i < (phba->num_cpus + eq_msix); i++) {
3602 eq = &phwi_context->be_eq[i].q;
3603 eqe = queue_tail_node(eq);
3604 num_processed = 0;
3605 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
3606 & EQE_VALID_MASK) {
3607 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
3608 queue_tail_inc(eq);
3609 eqe = queue_tail_node(eq);
3610 num_processed++;
3611 }
3612
3613 if (num_processed)
3614 hwi_ring_eq_db(phba, eq->id, 1, num_processed, 1, 1);
3615 }
3616 }
3617
hwi_cleanup_port(struct beiscsi_hba * phba)3618 static void hwi_cleanup_port(struct beiscsi_hba *phba)
3619 {
3620 struct be_queue_info *q;
3621 struct be_ctrl_info *ctrl = &phba->ctrl;
3622 struct hwi_controller *phwi_ctrlr;
3623 struct hwi_context_memory *phwi_context;
3624 int i, eq_for_mcc, ulp_num;
3625
3626 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)
3627 if (test_bit(ulp_num, &phba->fw_config.ulp_supported))
3628 beiscsi_cmd_iscsi_cleanup(phba, ulp_num);
3629
3630 /**
3631 * Purge all EQ entries that may have been left out. This is to
3632 * workaround a problem we've seen occasionally where driver gets an
3633 * interrupt with EQ entry bit set after stopping the controller.
3634 */
3635 hwi_purge_eq(phba);
3636
3637 phwi_ctrlr = phba->phwi_ctrlr;
3638 phwi_context = phwi_ctrlr->phwi_ctxt;
3639
3640 be_cmd_iscsi_remove_template_hdr(ctrl);
3641
3642 for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
3643 q = &phwi_context->be_wrbq[i];
3644 if (q->created)
3645 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_WRBQ);
3646 }
3647 kfree(phwi_context->be_wrbq);
3648 free_wrb_handles(phba);
3649
3650 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
3651 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
3652
3653 q = &phwi_context->be_def_hdrq[ulp_num];
3654 if (q->created)
3655 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_DPDUQ);
3656
3657 q = &phwi_context->be_def_dataq[ulp_num];
3658 if (q->created)
3659 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_DPDUQ);
3660 }
3661 }
3662
3663 beiscsi_cmd_q_destroy(ctrl, NULL, QTYPE_SGL);
3664
3665 for (i = 0; i < (phba->num_cpus); i++) {
3666 q = &phwi_context->be_cq[i];
3667 if (q->created) {
3668 be_queue_free(phba, q);
3669 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_CQ);
3670 }
3671 }
3672
3673 be_mcc_queues_destroy(phba);
3674 if (phba->pcidev->msix_enabled)
3675 eq_for_mcc = 1;
3676 else
3677 eq_for_mcc = 0;
3678 for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) {
3679 q = &phwi_context->be_eq[i].q;
3680 if (q->created) {
3681 be_queue_free(phba, q);
3682 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_EQ);
3683 }
3684 }
3685 /* this ensures complete FW cleanup */
3686 beiscsi_cmd_function_reset(phba);
3687 /* last communication, indicate driver is unloading */
3688 beiscsi_cmd_special_wrb(&phba->ctrl, 0);
3689 }
3690
hwi_init_port(struct beiscsi_hba * phba)3691 static int hwi_init_port(struct beiscsi_hba *phba)
3692 {
3693 struct hwi_controller *phwi_ctrlr;
3694 struct hwi_context_memory *phwi_context;
3695 unsigned int def_pdu_ring_sz;
3696 struct be_ctrl_info *ctrl = &phba->ctrl;
3697 int status, ulp_num;
3698 u16 nbufs;
3699
3700 phwi_ctrlr = phba->phwi_ctrlr;
3701 phwi_context = phwi_ctrlr->phwi_ctxt;
3702 /* set port optic state to unknown */
3703 phba->optic_state = 0xff;
3704
3705 status = beiscsi_create_eqs(phba, phwi_context);
3706 if (status != 0) {
3707 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3708 "BM_%d : EQ not created\n");
3709 goto error;
3710 }
3711
3712 status = be_mcc_queues_create(phba, phwi_context);
3713 if (status != 0)
3714 goto error;
3715
3716 status = beiscsi_check_supported_fw(ctrl, phba);
3717 if (status != 0) {
3718 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3719 "BM_%d : Unsupported fw version\n");
3720 goto error;
3721 }
3722
3723 status = beiscsi_create_cqs(phba, phwi_context);
3724 if (status != 0) {
3725 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3726 "BM_%d : CQ not created\n");
3727 goto error;
3728 }
3729
3730 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
3731 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
3732 nbufs = phwi_context->pasync_ctx[ulp_num]->num_entries;
3733 def_pdu_ring_sz = nbufs * sizeof(struct phys_addr);
3734
3735 status = beiscsi_create_def_hdr(phba, phwi_context,
3736 phwi_ctrlr,
3737 def_pdu_ring_sz,
3738 ulp_num);
3739 if (status != 0) {
3740 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3741 "BM_%d : Default Header not created for ULP : %d\n",
3742 ulp_num);
3743 goto error;
3744 }
3745
3746 status = beiscsi_create_def_data(phba, phwi_context,
3747 phwi_ctrlr,
3748 def_pdu_ring_sz,
3749 ulp_num);
3750 if (status != 0) {
3751 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3752 "BM_%d : Default Data not created for ULP : %d\n",
3753 ulp_num);
3754 goto error;
3755 }
3756 /**
3757 * Now that the default PDU rings have been created,
3758 * let EP know about it.
3759 */
3760 beiscsi_hdq_post_handles(phba, BEISCSI_DEFQ_HDR,
3761 ulp_num, nbufs);
3762 beiscsi_hdq_post_handles(phba, BEISCSI_DEFQ_DATA,
3763 ulp_num, nbufs);
3764 }
3765 }
3766
3767 status = beiscsi_post_pages(phba);
3768 if (status != 0) {
3769 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3770 "BM_%d : Post SGL Pages Failed\n");
3771 goto error;
3772 }
3773
3774 status = beiscsi_post_template_hdr(phba);
3775 if (status != 0) {
3776 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3777 "BM_%d : Template HDR Posting for CXN Failed\n");
3778 }
3779
3780 status = beiscsi_create_wrb_rings(phba, phwi_context, phwi_ctrlr);
3781 if (status != 0) {
3782 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3783 "BM_%d : WRB Rings not created\n");
3784 goto error;
3785 }
3786
3787 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
3788 uint16_t async_arr_idx = 0;
3789
3790 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
3791 uint16_t cri = 0;
3792 struct hd_async_context *pasync_ctx;
3793
3794 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(
3795 phwi_ctrlr, ulp_num);
3796 for (cri = 0; cri <
3797 phba->params.cxns_per_ctrl; cri++) {
3798 if (ulp_num == BEISCSI_GET_ULP_FROM_CRI
3799 (phwi_ctrlr, cri))
3800 pasync_ctx->cid_to_async_cri_map[
3801 phwi_ctrlr->wrb_context[cri].cid] =
3802 async_arr_idx++;
3803 }
3804 }
3805 }
3806
3807 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3808 "BM_%d : hwi_init_port success\n");
3809 return 0;
3810
3811 error:
3812 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3813 "BM_%d : hwi_init_port failed");
3814 hwi_cleanup_port(phba);
3815 return status;
3816 }
3817
hwi_init_controller(struct beiscsi_hba * phba)3818 static int hwi_init_controller(struct beiscsi_hba *phba)
3819 {
3820 struct hwi_controller *phwi_ctrlr;
3821
3822 phwi_ctrlr = phba->phwi_ctrlr;
3823 if (1 == phba->init_mem[HWI_MEM_ADDN_CONTEXT].num_elements) {
3824 phwi_ctrlr->phwi_ctxt = (struct hwi_context_memory *)phba->
3825 init_mem[HWI_MEM_ADDN_CONTEXT].mem_array[0].virtual_address;
3826 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3827 "BM_%d : phwi_ctrlr->phwi_ctxt=%p\n",
3828 phwi_ctrlr->phwi_ctxt);
3829 } else {
3830 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3831 "BM_%d : HWI_MEM_ADDN_CONTEXT is more "
3832 "than one element.Failing to load\n");
3833 return -ENOMEM;
3834 }
3835
3836 iscsi_init_global_templates(phba);
3837 if (beiscsi_init_wrb_handle(phba))
3838 return -ENOMEM;
3839
3840 if (hwi_init_async_pdu_ctx(phba)) {
3841 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3842 "BM_%d : hwi_init_async_pdu_ctx failed\n");
3843 return -ENOMEM;
3844 }
3845
3846 if (hwi_init_port(phba) != 0) {
3847 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3848 "BM_%d : hwi_init_controller failed\n");
3849
3850 return -ENOMEM;
3851 }
3852 return 0;
3853 }
3854
beiscsi_free_mem(struct beiscsi_hba * phba)3855 static void beiscsi_free_mem(struct beiscsi_hba *phba)
3856 {
3857 struct be_mem_descriptor *mem_descr;
3858 int i, j;
3859
3860 mem_descr = phba->init_mem;
3861 i = 0;
3862 j = 0;
3863 for (i = 0; i < SE_MEM_MAX; i++) {
3864 for (j = mem_descr->num_elements; j > 0; j--) {
3865 dma_free_coherent(&phba->pcidev->dev,
3866 mem_descr->mem_array[j - 1].size,
3867 mem_descr->mem_array[j - 1].virtual_address,
3868 (unsigned long)mem_descr->mem_array[j - 1].
3869 bus_address.u.a64.address);
3870 }
3871
3872 kfree(mem_descr->mem_array);
3873 mem_descr++;
3874 }
3875 kfree(phba->init_mem);
3876 kfree(phba->phwi_ctrlr->wrb_context);
3877 kfree(phba->phwi_ctrlr);
3878 }
3879
beiscsi_init_sgl_handle(struct beiscsi_hba * phba)3880 static int beiscsi_init_sgl_handle(struct beiscsi_hba *phba)
3881 {
3882 struct be_mem_descriptor *mem_descr_sglh, *mem_descr_sg;
3883 struct sgl_handle *psgl_handle;
3884 struct iscsi_sge *pfrag;
3885 unsigned int arr_index, i, idx;
3886 unsigned int ulp_icd_start, ulp_num = 0;
3887
3888 phba->io_sgl_hndl_avbl = 0;
3889 phba->eh_sgl_hndl_avbl = 0;
3890
3891 mem_descr_sglh = phba->init_mem;
3892 mem_descr_sglh += HWI_MEM_SGLH;
3893 if (1 == mem_descr_sglh->num_elements) {
3894 phba->io_sgl_hndl_base = kcalloc(phba->params.ios_per_ctrl,
3895 sizeof(struct sgl_handle *),
3896 GFP_KERNEL);
3897 if (!phba->io_sgl_hndl_base) {
3898 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3899 "BM_%d : Mem Alloc Failed. Failing to load\n");
3900 return -ENOMEM;
3901 }
3902 phba->eh_sgl_hndl_base =
3903 kcalloc(phba->params.icds_per_ctrl -
3904 phba->params.ios_per_ctrl,
3905 sizeof(struct sgl_handle *), GFP_KERNEL);
3906 if (!phba->eh_sgl_hndl_base) {
3907 kfree(phba->io_sgl_hndl_base);
3908 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3909 "BM_%d : Mem Alloc Failed. Failing to load\n");
3910 return -ENOMEM;
3911 }
3912 } else {
3913 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3914 "BM_%d : HWI_MEM_SGLH is more than one element."
3915 "Failing to load\n");
3916 return -ENOMEM;
3917 }
3918
3919 arr_index = 0;
3920 idx = 0;
3921 while (idx < mem_descr_sglh->num_elements) {
3922 psgl_handle = mem_descr_sglh->mem_array[idx].virtual_address;
3923
3924 for (i = 0; i < (mem_descr_sglh->mem_array[idx].size /
3925 sizeof(struct sgl_handle)); i++) {
3926 if (arr_index < phba->params.ios_per_ctrl) {
3927 phba->io_sgl_hndl_base[arr_index] = psgl_handle;
3928 phba->io_sgl_hndl_avbl++;
3929 arr_index++;
3930 } else {
3931 phba->eh_sgl_hndl_base[arr_index -
3932 phba->params.ios_per_ctrl] =
3933 psgl_handle;
3934 arr_index++;
3935 phba->eh_sgl_hndl_avbl++;
3936 }
3937 psgl_handle++;
3938 }
3939 idx++;
3940 }
3941 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3942 "BM_%d : phba->io_sgl_hndl_avbl=%d"
3943 "phba->eh_sgl_hndl_avbl=%d\n",
3944 phba->io_sgl_hndl_avbl,
3945 phba->eh_sgl_hndl_avbl);
3946
3947 mem_descr_sg = phba->init_mem;
3948 mem_descr_sg += HWI_MEM_SGE;
3949 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3950 "\n BM_%d : mem_descr_sg->num_elements=%d\n",
3951 mem_descr_sg->num_elements);
3952
3953 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)
3954 if (test_bit(ulp_num, &phba->fw_config.ulp_supported))
3955 break;
3956
3957 ulp_icd_start = phba->fw_config.iscsi_icd_start[ulp_num];
3958
3959 arr_index = 0;
3960 idx = 0;
3961 while (idx < mem_descr_sg->num_elements) {
3962 pfrag = mem_descr_sg->mem_array[idx].virtual_address;
3963
3964 for (i = 0;
3965 i < (mem_descr_sg->mem_array[idx].size) /
3966 (sizeof(struct iscsi_sge) * phba->params.num_sge_per_io);
3967 i++) {
3968 if (arr_index < phba->params.ios_per_ctrl)
3969 psgl_handle = phba->io_sgl_hndl_base[arr_index];
3970 else
3971 psgl_handle = phba->eh_sgl_hndl_base[arr_index -
3972 phba->params.ios_per_ctrl];
3973 psgl_handle->pfrag = pfrag;
3974 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, pfrag, 0);
3975 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, pfrag, 0);
3976 pfrag += phba->params.num_sge_per_io;
3977 psgl_handle->sgl_index = ulp_icd_start + arr_index++;
3978 }
3979 idx++;
3980 }
3981 phba->io_sgl_free_index = 0;
3982 phba->io_sgl_alloc_index = 0;
3983 phba->eh_sgl_free_index = 0;
3984 phba->eh_sgl_alloc_index = 0;
3985 return 0;
3986 }
3987
hba_setup_cid_tbls(struct beiscsi_hba * phba)3988 static int hba_setup_cid_tbls(struct beiscsi_hba *phba)
3989 {
3990 int ret;
3991 uint16_t i, ulp_num;
3992 struct ulp_cid_info *ptr_cid_info = NULL;
3993
3994 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
3995 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
3996 ptr_cid_info = kzalloc(sizeof(struct ulp_cid_info),
3997 GFP_KERNEL);
3998
3999 if (!ptr_cid_info) {
4000 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4001 "BM_%d : Failed to allocate memory"
4002 "for ULP_CID_INFO for ULP : %d\n",
4003 ulp_num);
4004 ret = -ENOMEM;
4005 goto free_memory;
4006
4007 }
4008
4009 /* Allocate memory for CID array */
4010 ptr_cid_info->cid_array =
4011 kcalloc(BEISCSI_GET_CID_COUNT(phba, ulp_num),
4012 sizeof(*ptr_cid_info->cid_array),
4013 GFP_KERNEL);
4014 if (!ptr_cid_info->cid_array) {
4015 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4016 "BM_%d : Failed to allocate memory"
4017 "for CID_ARRAY for ULP : %d\n",
4018 ulp_num);
4019 kfree(ptr_cid_info);
4020 ptr_cid_info = NULL;
4021 ret = -ENOMEM;
4022
4023 goto free_memory;
4024 }
4025 ptr_cid_info->avlbl_cids = BEISCSI_GET_CID_COUNT(
4026 phba, ulp_num);
4027
4028 /* Save the cid_info_array ptr */
4029 phba->cid_array_info[ulp_num] = ptr_cid_info;
4030 }
4031 }
4032 phba->ep_array = kcalloc(phba->params.cxns_per_ctrl,
4033 sizeof(struct iscsi_endpoint *),
4034 GFP_KERNEL);
4035 if (!phba->ep_array) {
4036 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4037 "BM_%d : Failed to allocate memory in "
4038 "hba_setup_cid_tbls\n");
4039 ret = -ENOMEM;
4040
4041 goto free_memory;
4042 }
4043
4044 phba->conn_table = kcalloc(phba->params.cxns_per_ctrl,
4045 sizeof(struct beiscsi_conn *),
4046 GFP_KERNEL);
4047 if (!phba->conn_table) {
4048 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4049 "BM_%d : Failed to allocate memory in"
4050 "hba_setup_cid_tbls\n");
4051
4052 kfree(phba->ep_array);
4053 phba->ep_array = NULL;
4054 ret = -ENOMEM;
4055
4056 goto free_memory;
4057 }
4058
4059 for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
4060 ulp_num = phba->phwi_ctrlr->wrb_context[i].ulp_num;
4061
4062 ptr_cid_info = phba->cid_array_info[ulp_num];
4063 ptr_cid_info->cid_array[ptr_cid_info->cid_alloc++] =
4064 phba->phwi_ctrlr->wrb_context[i].cid;
4065
4066 }
4067
4068 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
4069 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
4070 ptr_cid_info = phba->cid_array_info[ulp_num];
4071
4072 ptr_cid_info->cid_alloc = 0;
4073 ptr_cid_info->cid_free = 0;
4074 }
4075 }
4076 return 0;
4077
4078 free_memory:
4079 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
4080 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
4081 ptr_cid_info = phba->cid_array_info[ulp_num];
4082
4083 if (ptr_cid_info) {
4084 kfree(ptr_cid_info->cid_array);
4085 kfree(ptr_cid_info);
4086 phba->cid_array_info[ulp_num] = NULL;
4087 }
4088 }
4089 }
4090
4091 return ret;
4092 }
4093
hwi_enable_intr(struct beiscsi_hba * phba)4094 static void hwi_enable_intr(struct beiscsi_hba *phba)
4095 {
4096 struct be_ctrl_info *ctrl = &phba->ctrl;
4097 struct hwi_controller *phwi_ctrlr;
4098 struct hwi_context_memory *phwi_context;
4099 struct be_queue_info *eq;
4100 u8 __iomem *addr;
4101 u32 reg, i;
4102 u32 enabled;
4103
4104 phwi_ctrlr = phba->phwi_ctrlr;
4105 phwi_context = phwi_ctrlr->phwi_ctxt;
4106
4107 addr = (u8 __iomem *) ((u8 __iomem *) ctrl->pcicfg +
4108 PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
4109 reg = ioread32(addr);
4110
4111 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
4112 if (!enabled) {
4113 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
4114 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
4115 "BM_%d : reg =x%08x addr=%p\n", reg, addr);
4116 iowrite32(reg, addr);
4117 }
4118
4119 if (!phba->pcidev->msix_enabled) {
4120 eq = &phwi_context->be_eq[0].q;
4121 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
4122 "BM_%d : eq->id=%d\n", eq->id);
4123
4124 hwi_ring_eq_db(phba, eq->id, 0, 0, 1, 1);
4125 } else {
4126 for (i = 0; i <= phba->num_cpus; i++) {
4127 eq = &phwi_context->be_eq[i].q;
4128 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
4129 "BM_%d : eq->id=%d\n", eq->id);
4130 hwi_ring_eq_db(phba, eq->id, 0, 0, 1, 1);
4131 }
4132 }
4133 }
4134
hwi_disable_intr(struct beiscsi_hba * phba)4135 static void hwi_disable_intr(struct beiscsi_hba *phba)
4136 {
4137 struct be_ctrl_info *ctrl = &phba->ctrl;
4138
4139 u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
4140 u32 reg = ioread32(addr);
4141
4142 u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
4143 if (enabled) {
4144 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
4145 iowrite32(reg, addr);
4146 } else
4147 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
4148 "BM_%d : In hwi_disable_intr, Already Disabled\n");
4149 }
4150
beiscsi_init_port(struct beiscsi_hba * phba)4151 static int beiscsi_init_port(struct beiscsi_hba *phba)
4152 {
4153 int ret;
4154
4155 ret = hwi_init_controller(phba);
4156 if (ret < 0) {
4157 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4158 "BM_%d : init controller failed\n");
4159 return ret;
4160 }
4161 ret = beiscsi_init_sgl_handle(phba);
4162 if (ret < 0) {
4163 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4164 "BM_%d : init sgl handles failed\n");
4165 goto cleanup_port;
4166 }
4167
4168 ret = hba_setup_cid_tbls(phba);
4169 if (ret < 0) {
4170 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4171 "BM_%d : setup CID table failed\n");
4172 kfree(phba->io_sgl_hndl_base);
4173 kfree(phba->eh_sgl_hndl_base);
4174 goto cleanup_port;
4175 }
4176 return ret;
4177
4178 cleanup_port:
4179 hwi_cleanup_port(phba);
4180 return ret;
4181 }
4182
beiscsi_cleanup_port(struct beiscsi_hba * phba)4183 static void beiscsi_cleanup_port(struct beiscsi_hba *phba)
4184 {
4185 struct ulp_cid_info *ptr_cid_info = NULL;
4186 int ulp_num;
4187
4188 kfree(phba->io_sgl_hndl_base);
4189 kfree(phba->eh_sgl_hndl_base);
4190 kfree(phba->ep_array);
4191 kfree(phba->conn_table);
4192
4193 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
4194 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
4195 ptr_cid_info = phba->cid_array_info[ulp_num];
4196
4197 if (ptr_cid_info) {
4198 kfree(ptr_cid_info->cid_array);
4199 kfree(ptr_cid_info);
4200 phba->cid_array_info[ulp_num] = NULL;
4201 }
4202 }
4203 }
4204 }
4205
4206 /**
4207 * beiscsi_free_mgmt_task_handles()- Free driver CXN resources
4208 * @beiscsi_conn: ptr to the conn to be cleaned up
4209 * @task: ptr to iscsi_task resource to be freed.
4210 *
4211 * Free driver mgmt resources binded to CXN.
4212 **/
4213 void
beiscsi_free_mgmt_task_handles(struct beiscsi_conn * beiscsi_conn,struct iscsi_task * task)4214 beiscsi_free_mgmt_task_handles(struct beiscsi_conn *beiscsi_conn,
4215 struct iscsi_task *task)
4216 {
4217 struct beiscsi_io_task *io_task;
4218 struct beiscsi_hba *phba = beiscsi_conn->phba;
4219 struct hwi_wrb_context *pwrb_context;
4220 struct hwi_controller *phwi_ctrlr;
4221 uint16_t cri_index = BE_GET_CRI_FROM_CID(
4222 beiscsi_conn->beiscsi_conn_cid);
4223
4224 phwi_ctrlr = phba->phwi_ctrlr;
4225 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
4226
4227 io_task = task->dd_data;
4228
4229 if (io_task->pwrb_handle) {
4230 free_wrb_handle(phba, pwrb_context, io_task->pwrb_handle);
4231 io_task->pwrb_handle = NULL;
4232 }
4233
4234 if (io_task->psgl_handle) {
4235 free_mgmt_sgl_handle(phba, io_task->psgl_handle);
4236 io_task->psgl_handle = NULL;
4237 }
4238
4239 if (io_task->mtask_addr) {
4240 dma_unmap_single(&phba->pcidev->dev,
4241 io_task->mtask_addr,
4242 io_task->mtask_data_count,
4243 DMA_TO_DEVICE);
4244 io_task->mtask_addr = 0;
4245 }
4246 }
4247
4248 /**
4249 * beiscsi_cleanup_task()- Free driver resources of the task
4250 * @task: ptr to the iscsi task
4251 *
4252 **/
beiscsi_cleanup_task(struct iscsi_task * task)4253 static void beiscsi_cleanup_task(struct iscsi_task *task)
4254 {
4255 struct beiscsi_io_task *io_task = task->dd_data;
4256 struct iscsi_conn *conn = task->conn;
4257 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
4258 struct beiscsi_hba *phba = beiscsi_conn->phba;
4259 struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess;
4260 struct hwi_wrb_context *pwrb_context;
4261 struct hwi_controller *phwi_ctrlr;
4262 uint16_t cri_index = BE_GET_CRI_FROM_CID(
4263 beiscsi_conn->beiscsi_conn_cid);
4264
4265 phwi_ctrlr = phba->phwi_ctrlr;
4266 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
4267
4268 if (io_task->cmd_bhs) {
4269 dma_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs,
4270 io_task->bhs_pa.u.a64.address);
4271 io_task->cmd_bhs = NULL;
4272 task->hdr = NULL;
4273 }
4274
4275 if (task->sc) {
4276 if (io_task->pwrb_handle) {
4277 free_wrb_handle(phba, pwrb_context,
4278 io_task->pwrb_handle);
4279 io_task->pwrb_handle = NULL;
4280 }
4281
4282 if (io_task->psgl_handle) {
4283 free_io_sgl_handle(phba, io_task->psgl_handle);
4284 io_task->psgl_handle = NULL;
4285 }
4286
4287 if (io_task->scsi_cmnd) {
4288 if (io_task->num_sg)
4289 scsi_dma_unmap(io_task->scsi_cmnd);
4290 io_task->scsi_cmnd = NULL;
4291 }
4292 } else {
4293 if (!beiscsi_conn->login_in_progress)
4294 beiscsi_free_mgmt_task_handles(beiscsi_conn, task);
4295 }
4296 }
4297
4298 void
beiscsi_offload_connection(struct beiscsi_conn * beiscsi_conn,struct beiscsi_offload_params * params)4299 beiscsi_offload_connection(struct beiscsi_conn *beiscsi_conn,
4300 struct beiscsi_offload_params *params)
4301 {
4302 struct wrb_handle *pwrb_handle;
4303 struct hwi_wrb_context *pwrb_context = NULL;
4304 struct beiscsi_hba *phba = beiscsi_conn->phba;
4305 struct iscsi_task *task = beiscsi_conn->task;
4306 struct iscsi_session *session = task->conn->session;
4307 u32 doorbell = 0;
4308
4309 /*
4310 * We can always use 0 here because it is reserved by libiscsi for
4311 * login/startup related tasks.
4312 */
4313 beiscsi_conn->login_in_progress = 0;
4314 spin_lock_bh(&session->back_lock);
4315 beiscsi_cleanup_task(task);
4316 spin_unlock_bh(&session->back_lock);
4317
4318 pwrb_handle = alloc_wrb_handle(phba, beiscsi_conn->beiscsi_conn_cid,
4319 &pwrb_context);
4320
4321 /* Check for the adapter family */
4322 if (is_chip_be2_be3r(phba))
4323 beiscsi_offload_cxn_v0(params, pwrb_handle,
4324 phba->init_mem,
4325 pwrb_context);
4326 else
4327 beiscsi_offload_cxn_v2(params, pwrb_handle,
4328 pwrb_context);
4329
4330 be_dws_le_to_cpu(pwrb_handle->pwrb,
4331 sizeof(struct iscsi_target_context_update_wrb));
4332
4333 doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
4334 doorbell |= (pwrb_handle->wrb_index & DB_DEF_PDU_WRB_INDEX_MASK)
4335 << DB_DEF_PDU_WRB_INDEX_SHIFT;
4336 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
4337 iowrite32(doorbell, phba->db_va +
4338 beiscsi_conn->doorbell_offset);
4339
4340 /*
4341 * There is no completion for CONTEXT_UPDATE. The completion of next
4342 * WRB posted guarantees FW's processing and DMA'ing of it.
4343 * Use beiscsi_put_wrb_handle to put it back in the pool which makes
4344 * sure zero'ing or reuse of the WRB only after wrbs_per_cxn.
4345 */
4346 beiscsi_put_wrb_handle(pwrb_context, pwrb_handle,
4347 phba->params.wrbs_per_cxn);
4348 beiscsi_log(phba, KERN_INFO,
4349 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
4350 "BM_%d : put CONTEXT_UPDATE pwrb_handle=%p free_index=0x%x wrb_handles_available=%d\n",
4351 pwrb_handle, pwrb_context->free_index,
4352 pwrb_context->wrb_handles_available);
4353 }
4354
beiscsi_parse_pdu(struct iscsi_conn * conn,itt_t itt,int * index,int * age)4355 static void beiscsi_parse_pdu(struct iscsi_conn *conn, itt_t itt,
4356 int *index, int *age)
4357 {
4358 *index = (int)itt;
4359 if (age)
4360 *age = conn->session->age;
4361 }
4362
4363 /**
4364 * beiscsi_alloc_pdu - allocates pdu and related resources
4365 * @task: libiscsi task
4366 * @opcode: opcode of pdu for task
4367 *
4368 * This is called with the session lock held. It will allocate
4369 * the wrb and sgl if needed for the command. And it will prep
4370 * the pdu's itt. beiscsi_parse_pdu will later translate
4371 * the pdu itt to the libiscsi task itt.
4372 */
beiscsi_alloc_pdu(struct iscsi_task * task,uint8_t opcode)4373 static int beiscsi_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
4374 {
4375 struct beiscsi_io_task *io_task = task->dd_data;
4376 struct iscsi_conn *conn = task->conn;
4377 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
4378 struct beiscsi_hba *phba = beiscsi_conn->phba;
4379 struct hwi_wrb_context *pwrb_context;
4380 struct hwi_controller *phwi_ctrlr;
4381 itt_t itt;
4382 uint16_t cri_index = 0;
4383 struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess;
4384 dma_addr_t paddr;
4385
4386 io_task->cmd_bhs = dma_pool_alloc(beiscsi_sess->bhs_pool,
4387 GFP_ATOMIC, &paddr);
4388 if (!io_task->cmd_bhs)
4389 return -ENOMEM;
4390 io_task->bhs_pa.u.a64.address = paddr;
4391 io_task->libiscsi_itt = (itt_t)task->itt;
4392 io_task->conn = beiscsi_conn;
4393
4394 task->hdr = (struct iscsi_hdr *)&io_task->cmd_bhs->iscsi_hdr;
4395 task->hdr_max = sizeof(struct be_cmd_bhs);
4396 io_task->psgl_handle = NULL;
4397 io_task->pwrb_handle = NULL;
4398
4399 if (task->sc) {
4400 io_task->psgl_handle = alloc_io_sgl_handle(phba);
4401 if (!io_task->psgl_handle) {
4402 beiscsi_log(phba, KERN_ERR,
4403 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
4404 "BM_%d : Alloc of IO_SGL_ICD Failed"
4405 "for the CID : %d\n",
4406 beiscsi_conn->beiscsi_conn_cid);
4407 goto free_hndls;
4408 }
4409 io_task->pwrb_handle = alloc_wrb_handle(phba,
4410 beiscsi_conn->beiscsi_conn_cid,
4411 &io_task->pwrb_context);
4412 if (!io_task->pwrb_handle) {
4413 beiscsi_log(phba, KERN_ERR,
4414 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
4415 "BM_%d : Alloc of WRB_HANDLE Failed"
4416 "for the CID : %d\n",
4417 beiscsi_conn->beiscsi_conn_cid);
4418 goto free_io_hndls;
4419 }
4420 } else {
4421 io_task->scsi_cmnd = NULL;
4422 if ((opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGIN) {
4423 beiscsi_conn->task = task;
4424 if (!beiscsi_conn->login_in_progress) {
4425 io_task->psgl_handle = (struct sgl_handle *)
4426 alloc_mgmt_sgl_handle(phba);
4427 if (!io_task->psgl_handle) {
4428 beiscsi_log(phba, KERN_ERR,
4429 BEISCSI_LOG_IO |
4430 BEISCSI_LOG_CONFIG,
4431 "BM_%d : Alloc of MGMT_SGL_ICD Failed"
4432 "for the CID : %d\n",
4433 beiscsi_conn->
4434 beiscsi_conn_cid);
4435 goto free_hndls;
4436 }
4437
4438 beiscsi_conn->login_in_progress = 1;
4439 beiscsi_conn->plogin_sgl_handle =
4440 io_task->psgl_handle;
4441 io_task->pwrb_handle =
4442 alloc_wrb_handle(phba,
4443 beiscsi_conn->beiscsi_conn_cid,
4444 &io_task->pwrb_context);
4445 if (!io_task->pwrb_handle) {
4446 beiscsi_log(phba, KERN_ERR,
4447 BEISCSI_LOG_IO |
4448 BEISCSI_LOG_CONFIG,
4449 "BM_%d : Alloc of WRB_HANDLE Failed"
4450 "for the CID : %d\n",
4451 beiscsi_conn->
4452 beiscsi_conn_cid);
4453 goto free_mgmt_hndls;
4454 }
4455 beiscsi_conn->plogin_wrb_handle =
4456 io_task->pwrb_handle;
4457
4458 } else {
4459 io_task->psgl_handle =
4460 beiscsi_conn->plogin_sgl_handle;
4461 io_task->pwrb_handle =
4462 beiscsi_conn->plogin_wrb_handle;
4463 }
4464 } else {
4465 io_task->psgl_handle = alloc_mgmt_sgl_handle(phba);
4466 if (!io_task->psgl_handle) {
4467 beiscsi_log(phba, KERN_ERR,
4468 BEISCSI_LOG_IO |
4469 BEISCSI_LOG_CONFIG,
4470 "BM_%d : Alloc of MGMT_SGL_ICD Failed"
4471 "for the CID : %d\n",
4472 beiscsi_conn->
4473 beiscsi_conn_cid);
4474 goto free_hndls;
4475 }
4476 io_task->pwrb_handle =
4477 alloc_wrb_handle(phba,
4478 beiscsi_conn->beiscsi_conn_cid,
4479 &io_task->pwrb_context);
4480 if (!io_task->pwrb_handle) {
4481 beiscsi_log(phba, KERN_ERR,
4482 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
4483 "BM_%d : Alloc of WRB_HANDLE Failed"
4484 "for the CID : %d\n",
4485 beiscsi_conn->beiscsi_conn_cid);
4486 goto free_mgmt_hndls;
4487 }
4488
4489 }
4490 }
4491 itt = (itt_t) cpu_to_be32(((unsigned int)io_task->pwrb_handle->
4492 wrb_index << 16) | (unsigned int)
4493 (io_task->psgl_handle->sgl_index));
4494 io_task->pwrb_handle->pio_handle = task;
4495
4496 io_task->cmd_bhs->iscsi_hdr.itt = itt;
4497 return 0;
4498
4499 free_io_hndls:
4500 free_io_sgl_handle(phba, io_task->psgl_handle);
4501 goto free_hndls;
4502 free_mgmt_hndls:
4503 free_mgmt_sgl_handle(phba, io_task->psgl_handle);
4504 io_task->psgl_handle = NULL;
4505 free_hndls:
4506 phwi_ctrlr = phba->phwi_ctrlr;
4507 cri_index = BE_GET_CRI_FROM_CID(
4508 beiscsi_conn->beiscsi_conn_cid);
4509 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
4510 if (io_task->pwrb_handle)
4511 free_wrb_handle(phba, pwrb_context, io_task->pwrb_handle);
4512 io_task->pwrb_handle = NULL;
4513 dma_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs,
4514 io_task->bhs_pa.u.a64.address);
4515 io_task->cmd_bhs = NULL;
4516 return -ENOMEM;
4517 }
beiscsi_iotask_v2(struct iscsi_task * task,struct scatterlist * sg,unsigned int num_sg,unsigned int xferlen,unsigned int writedir)4518 static int beiscsi_iotask_v2(struct iscsi_task *task, struct scatterlist *sg,
4519 unsigned int num_sg, unsigned int xferlen,
4520 unsigned int writedir)
4521 {
4522
4523 struct beiscsi_io_task *io_task = task->dd_data;
4524 struct iscsi_conn *conn = task->conn;
4525 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
4526 struct beiscsi_hba *phba = beiscsi_conn->phba;
4527 struct iscsi_wrb *pwrb = NULL;
4528 unsigned int doorbell = 0;
4529
4530 pwrb = io_task->pwrb_handle->pwrb;
4531
4532 io_task->bhs_len = sizeof(struct be_cmd_bhs);
4533
4534 if (writedir) {
4535 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, type, pwrb,
4536 INI_WR_CMD);
4537 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp, pwrb, 1);
4538 } else {
4539 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, type, pwrb,
4540 INI_RD_CMD);
4541 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp, pwrb, 0);
4542 }
4543
4544 io_task->wrb_type = AMAP_GET_BITS(struct amap_iscsi_wrb_v2,
4545 type, pwrb);
4546
4547 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, lun, pwrb,
4548 cpu_to_be16(*(unsigned short *)
4549 &io_task->cmd_bhs->iscsi_hdr.lun));
4550 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, r2t_exp_dtl, pwrb, xferlen);
4551 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, wrb_idx, pwrb,
4552 io_task->pwrb_handle->wrb_index);
4553 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, cmdsn_itt, pwrb,
4554 be32_to_cpu(task->cmdsn));
4555 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sgl_idx, pwrb,
4556 io_task->psgl_handle->sgl_index);
4557
4558 hwi_write_sgl_v2(pwrb, sg, num_sg, io_task);
4559 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb, pwrb,
4560 io_task->pwrb_handle->wrb_index);
4561 if (io_task->pwrb_context->plast_wrb)
4562 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb,
4563 io_task->pwrb_context->plast_wrb,
4564 io_task->pwrb_handle->wrb_index);
4565 io_task->pwrb_context->plast_wrb = pwrb;
4566
4567 be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));
4568
4569 doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
4570 doorbell |= (io_task->pwrb_handle->wrb_index &
4571 DB_DEF_PDU_WRB_INDEX_MASK) <<
4572 DB_DEF_PDU_WRB_INDEX_SHIFT;
4573 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
4574 iowrite32(doorbell, phba->db_va +
4575 beiscsi_conn->doorbell_offset);
4576 return 0;
4577 }
4578
beiscsi_iotask(struct iscsi_task * task,struct scatterlist * sg,unsigned int num_sg,unsigned int xferlen,unsigned int writedir)4579 static int beiscsi_iotask(struct iscsi_task *task, struct scatterlist *sg,
4580 unsigned int num_sg, unsigned int xferlen,
4581 unsigned int writedir)
4582 {
4583
4584 struct beiscsi_io_task *io_task = task->dd_data;
4585 struct iscsi_conn *conn = task->conn;
4586 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
4587 struct beiscsi_hba *phba = beiscsi_conn->phba;
4588 struct iscsi_wrb *pwrb = NULL;
4589 unsigned int doorbell = 0;
4590
4591 pwrb = io_task->pwrb_handle->pwrb;
4592 io_task->bhs_len = sizeof(struct be_cmd_bhs);
4593
4594 if (writedir) {
4595 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
4596 INI_WR_CMD);
4597 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 1);
4598 } else {
4599 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
4600 INI_RD_CMD);
4601 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0);
4602 }
4603
4604 io_task->wrb_type = AMAP_GET_BITS(struct amap_iscsi_wrb,
4605 type, pwrb);
4606
4607 AMAP_SET_BITS(struct amap_iscsi_wrb, lun, pwrb,
4608 cpu_to_be16(*(unsigned short *)
4609 &io_task->cmd_bhs->iscsi_hdr.lun));
4610 AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb, xferlen);
4611 AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb,
4612 io_task->pwrb_handle->wrb_index);
4613 AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb,
4614 be32_to_cpu(task->cmdsn));
4615 AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb,
4616 io_task->psgl_handle->sgl_index);
4617
4618 hwi_write_sgl(pwrb, sg, num_sg, io_task);
4619
4620 AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb,
4621 io_task->pwrb_handle->wrb_index);
4622 if (io_task->pwrb_context->plast_wrb)
4623 AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb,
4624 io_task->pwrb_context->plast_wrb,
4625 io_task->pwrb_handle->wrb_index);
4626 io_task->pwrb_context->plast_wrb = pwrb;
4627
4628 be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));
4629
4630 doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
4631 doorbell |= (io_task->pwrb_handle->wrb_index &
4632 DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT;
4633 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
4634
4635 iowrite32(doorbell, phba->db_va +
4636 beiscsi_conn->doorbell_offset);
4637 return 0;
4638 }
4639
beiscsi_mtask(struct iscsi_task * task)4640 static int beiscsi_mtask(struct iscsi_task *task)
4641 {
4642 struct beiscsi_io_task *io_task = task->dd_data;
4643 struct iscsi_conn *conn = task->conn;
4644 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
4645 struct beiscsi_hba *phba = beiscsi_conn->phba;
4646 struct iscsi_wrb *pwrb = NULL;
4647 unsigned int doorbell = 0;
4648 unsigned int cid;
4649 unsigned int pwrb_typeoffset = 0;
4650 int ret = 0;
4651
4652 cid = beiscsi_conn->beiscsi_conn_cid;
4653 pwrb = io_task->pwrb_handle->pwrb;
4654
4655 if (is_chip_be2_be3r(phba)) {
4656 AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb,
4657 be32_to_cpu(task->cmdsn));
4658 AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb,
4659 io_task->pwrb_handle->wrb_index);
4660 AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb,
4661 io_task->psgl_handle->sgl_index);
4662 AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb,
4663 task->data_count);
4664 AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb,
4665 io_task->pwrb_handle->wrb_index);
4666 if (io_task->pwrb_context->plast_wrb)
4667 AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb,
4668 io_task->pwrb_context->plast_wrb,
4669 io_task->pwrb_handle->wrb_index);
4670 io_task->pwrb_context->plast_wrb = pwrb;
4671
4672 pwrb_typeoffset = BE_WRB_TYPE_OFFSET;
4673 } else {
4674 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, cmdsn_itt, pwrb,
4675 be32_to_cpu(task->cmdsn));
4676 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, wrb_idx, pwrb,
4677 io_task->pwrb_handle->wrb_index);
4678 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sgl_idx, pwrb,
4679 io_task->psgl_handle->sgl_index);
4680 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, r2t_exp_dtl, pwrb,
4681 task->data_count);
4682 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb, pwrb,
4683 io_task->pwrb_handle->wrb_index);
4684 if (io_task->pwrb_context->plast_wrb)
4685 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb,
4686 io_task->pwrb_context->plast_wrb,
4687 io_task->pwrb_handle->wrb_index);
4688 io_task->pwrb_context->plast_wrb = pwrb;
4689
4690 pwrb_typeoffset = SKH_WRB_TYPE_OFFSET;
4691 }
4692
4693
4694 switch (task->hdr->opcode & ISCSI_OPCODE_MASK) {
4695 case ISCSI_OP_LOGIN:
4696 AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb, 1);
4697 ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset);
4698 ret = hwi_write_buffer(pwrb, task);
4699 break;
4700 case ISCSI_OP_NOOP_OUT:
4701 if (task->hdr->ttt != ISCSI_RESERVED_TAG) {
4702 ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset);
4703 if (is_chip_be2_be3r(phba))
4704 AMAP_SET_BITS(struct amap_iscsi_wrb,
4705 dmsg, pwrb, 1);
4706 else
4707 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
4708 dmsg, pwrb, 1);
4709 } else {
4710 ADAPTER_SET_WRB_TYPE(pwrb, INI_RD_CMD, pwrb_typeoffset);
4711 if (is_chip_be2_be3r(phba))
4712 AMAP_SET_BITS(struct amap_iscsi_wrb,
4713 dmsg, pwrb, 0);
4714 else
4715 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
4716 dmsg, pwrb, 0);
4717 }
4718 ret = hwi_write_buffer(pwrb, task);
4719 break;
4720 case ISCSI_OP_TEXT:
4721 ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset);
4722 ret = hwi_write_buffer(pwrb, task);
4723 break;
4724 case ISCSI_OP_SCSI_TMFUNC:
4725 ADAPTER_SET_WRB_TYPE(pwrb, INI_TMF_CMD, pwrb_typeoffset);
4726 ret = hwi_write_buffer(pwrb, task);
4727 break;
4728 case ISCSI_OP_LOGOUT:
4729 ADAPTER_SET_WRB_TYPE(pwrb, HWH_TYPE_LOGOUT, pwrb_typeoffset);
4730 ret = hwi_write_buffer(pwrb, task);
4731 break;
4732
4733 default:
4734 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
4735 "BM_%d : opcode =%d Not supported\n",
4736 task->hdr->opcode & ISCSI_OPCODE_MASK);
4737
4738 return -EINVAL;
4739 }
4740
4741 if (ret)
4742 return ret;
4743
4744 /* Set the task type */
4745 io_task->wrb_type = (is_chip_be2_be3r(phba)) ?
4746 AMAP_GET_BITS(struct amap_iscsi_wrb, type, pwrb) :
4747 AMAP_GET_BITS(struct amap_iscsi_wrb_v2, type, pwrb);
4748
4749 doorbell |= cid & DB_WRB_POST_CID_MASK;
4750 doorbell |= (io_task->pwrb_handle->wrb_index &
4751 DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT;
4752 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
4753 iowrite32(doorbell, phba->db_va +
4754 beiscsi_conn->doorbell_offset);
4755 return 0;
4756 }
4757
beiscsi_task_xmit(struct iscsi_task * task)4758 static int beiscsi_task_xmit(struct iscsi_task *task)
4759 {
4760 struct beiscsi_io_task *io_task = task->dd_data;
4761 struct scsi_cmnd *sc = task->sc;
4762 struct beiscsi_hba *phba;
4763 struct scatterlist *sg;
4764 int num_sg;
4765 unsigned int writedir = 0, xferlen = 0;
4766
4767 phba = io_task->conn->phba;
4768 /**
4769 * HBA in error includes BEISCSI_HBA_FW_TIMEOUT. IO path might be
4770 * operational if FW still gets heartbeat from EP FW. Is management
4771 * path really needed to continue further?
4772 */
4773 if (!beiscsi_hba_is_online(phba))
4774 return -EIO;
4775
4776 if (!io_task->conn->login_in_progress)
4777 task->hdr->exp_statsn = 0;
4778
4779 if (!sc)
4780 return beiscsi_mtask(task);
4781
4782 io_task->scsi_cmnd = sc;
4783 io_task->num_sg = 0;
4784 num_sg = scsi_dma_map(sc);
4785 if (num_sg < 0) {
4786 beiscsi_log(phba, KERN_ERR,
4787 BEISCSI_LOG_IO | BEISCSI_LOG_ISCSI,
4788 "BM_%d : scsi_dma_map Failed "
4789 "Driver_ITT : 0x%x ITT : 0x%x Xferlen : 0x%x\n",
4790 be32_to_cpu(io_task->cmd_bhs->iscsi_hdr.itt),
4791 io_task->libiscsi_itt, scsi_bufflen(sc));
4792
4793 return num_sg;
4794 }
4795 /**
4796 * For scsi cmd task, check num_sg before unmapping in cleanup_task.
4797 * For management task, cleanup_task checks mtask_addr before unmapping.
4798 */
4799 io_task->num_sg = num_sg;
4800 xferlen = scsi_bufflen(sc);
4801 sg = scsi_sglist(sc);
4802 if (sc->sc_data_direction == DMA_TO_DEVICE)
4803 writedir = 1;
4804 else
4805 writedir = 0;
4806
4807 return phba->iotask_fn(task, sg, num_sg, xferlen, writedir);
4808 }
4809
4810 /**
4811 * beiscsi_bsg_request - handle bsg request from ISCSI transport
4812 * @job: job to handle
4813 */
beiscsi_bsg_request(struct bsg_job * job)4814 static int beiscsi_bsg_request(struct bsg_job *job)
4815 {
4816 struct Scsi_Host *shost;
4817 struct beiscsi_hba *phba;
4818 struct iscsi_bsg_request *bsg_req = job->request;
4819 int rc = -EINVAL;
4820 unsigned int tag;
4821 struct be_dma_mem nonemb_cmd;
4822 struct be_cmd_resp_hdr *resp;
4823 struct iscsi_bsg_reply *bsg_reply = job->reply;
4824 unsigned short status, extd_status;
4825
4826 shost = iscsi_job_to_shost(job);
4827 phba = iscsi_host_priv(shost);
4828
4829 if (!beiscsi_hba_is_online(phba)) {
4830 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
4831 "BM_%d : HBA in error 0x%lx\n", phba->state);
4832 return -ENXIO;
4833 }
4834
4835 switch (bsg_req->msgcode) {
4836 case ISCSI_BSG_HST_VENDOR:
4837 nonemb_cmd.va = dma_alloc_coherent(&phba->ctrl.pdev->dev,
4838 job->request_payload.payload_len,
4839 &nonemb_cmd.dma, GFP_KERNEL);
4840 if (nonemb_cmd.va == NULL) {
4841 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
4842 "BM_%d : Failed to allocate memory for "
4843 "beiscsi_bsg_request\n");
4844 return -ENOMEM;
4845 }
4846 tag = mgmt_vendor_specific_fw_cmd(&phba->ctrl, phba, job,
4847 &nonemb_cmd);
4848 if (!tag) {
4849 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
4850 "BM_%d : MBX Tag Allocation Failed\n");
4851
4852 dma_free_coherent(&phba->ctrl.pdev->dev, nonemb_cmd.size,
4853 nonemb_cmd.va, nonemb_cmd.dma);
4854 return -EAGAIN;
4855 }
4856
4857 rc = wait_event_interruptible_timeout(
4858 phba->ctrl.mcc_wait[tag],
4859 phba->ctrl.mcc_tag_status[tag],
4860 msecs_to_jiffies(
4861 BEISCSI_HOST_MBX_TIMEOUT));
4862
4863 if (!test_bit(BEISCSI_HBA_ONLINE, &phba->state)) {
4864 clear_bit(MCC_TAG_STATE_RUNNING,
4865 &phba->ctrl.ptag_state[tag].tag_state);
4866 dma_free_coherent(&phba->ctrl.pdev->dev, nonemb_cmd.size,
4867 nonemb_cmd.va, nonemb_cmd.dma);
4868 return -EIO;
4869 }
4870 extd_status = (phba->ctrl.mcc_tag_status[tag] &
4871 CQE_STATUS_ADDL_MASK) >> CQE_STATUS_ADDL_SHIFT;
4872 status = phba->ctrl.mcc_tag_status[tag] & CQE_STATUS_MASK;
4873 free_mcc_wrb(&phba->ctrl, tag);
4874 resp = (struct be_cmd_resp_hdr *)nonemb_cmd.va;
4875 sg_copy_from_buffer(job->reply_payload.sg_list,
4876 job->reply_payload.sg_cnt,
4877 nonemb_cmd.va, (resp->response_length
4878 + sizeof(*resp)));
4879 bsg_reply->reply_payload_rcv_len = resp->response_length;
4880 bsg_reply->result = status;
4881 bsg_job_done(job, bsg_reply->result,
4882 bsg_reply->reply_payload_rcv_len);
4883 dma_free_coherent(&phba->ctrl.pdev->dev, nonemb_cmd.size,
4884 nonemb_cmd.va, nonemb_cmd.dma);
4885 if (status || extd_status) {
4886 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
4887 "BM_%d : MBX Cmd Failed"
4888 " status = %d extd_status = %d\n",
4889 status, extd_status);
4890
4891 return -EIO;
4892 } else {
4893 rc = 0;
4894 }
4895 break;
4896
4897 default:
4898 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
4899 "BM_%d : Unsupported bsg command: 0x%x\n",
4900 bsg_req->msgcode);
4901 break;
4902 }
4903
4904 return rc;
4905 }
4906
beiscsi_hba_attrs_init(struct beiscsi_hba * phba)4907 static void beiscsi_hba_attrs_init(struct beiscsi_hba *phba)
4908 {
4909 /* Set the logging parameter */
4910 beiscsi_log_enable_init(phba, beiscsi_log_enable);
4911 }
4912
beiscsi_start_boot_work(struct beiscsi_hba * phba,unsigned int s_handle)4913 void beiscsi_start_boot_work(struct beiscsi_hba *phba, unsigned int s_handle)
4914 {
4915 if (phba->boot_struct.boot_kset)
4916 return;
4917
4918 /* skip if boot work is already in progress */
4919 if (test_and_set_bit(BEISCSI_HBA_BOOT_WORK, &phba->state))
4920 return;
4921
4922 phba->boot_struct.retry = 3;
4923 phba->boot_struct.tag = 0;
4924 phba->boot_struct.s_handle = s_handle;
4925 phba->boot_struct.action = BEISCSI_BOOT_GET_SHANDLE;
4926 schedule_work(&phba->boot_work);
4927 }
4928
4929 /**
4930 * Boot flag info for iscsi-utilities
4931 * Bit 0 Block valid flag
4932 * Bit 1 Firmware booting selected
4933 */
4934 #define BEISCSI_SYSFS_ISCSI_BOOT_FLAGS 3
4935
beiscsi_show_boot_tgt_info(void * data,int type,char * buf)4936 static ssize_t beiscsi_show_boot_tgt_info(void *data, int type, char *buf)
4937 {
4938 struct beiscsi_hba *phba = data;
4939 struct mgmt_session_info *boot_sess = &phba->boot_struct.boot_sess;
4940 struct mgmt_conn_info *boot_conn = &boot_sess->conn_list[0];
4941 char *str = buf;
4942 int rc = -EPERM;
4943
4944 switch (type) {
4945 case ISCSI_BOOT_TGT_NAME:
4946 rc = sprintf(buf, "%.*s\n",
4947 (int)strlen(boot_sess->target_name),
4948 (char *)&boot_sess->target_name);
4949 break;
4950 case ISCSI_BOOT_TGT_IP_ADDR:
4951 if (boot_conn->dest_ipaddr.ip_type == BEISCSI_IP_TYPE_V4)
4952 rc = sprintf(buf, "%pI4\n",
4953 (char *)&boot_conn->dest_ipaddr.addr);
4954 else
4955 rc = sprintf(str, "%pI6\n",
4956 (char *)&boot_conn->dest_ipaddr.addr);
4957 break;
4958 case ISCSI_BOOT_TGT_PORT:
4959 rc = sprintf(str, "%d\n", boot_conn->dest_port);
4960 break;
4961
4962 case ISCSI_BOOT_TGT_CHAP_NAME:
4963 rc = sprintf(str, "%.*s\n",
4964 boot_conn->negotiated_login_options.auth_data.chap.
4965 target_chap_name_length,
4966 (char *)&boot_conn->negotiated_login_options.
4967 auth_data.chap.target_chap_name);
4968 break;
4969 case ISCSI_BOOT_TGT_CHAP_SECRET:
4970 rc = sprintf(str, "%.*s\n",
4971 boot_conn->negotiated_login_options.auth_data.chap.
4972 target_secret_length,
4973 (char *)&boot_conn->negotiated_login_options.
4974 auth_data.chap.target_secret);
4975 break;
4976 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
4977 rc = sprintf(str, "%.*s\n",
4978 boot_conn->negotiated_login_options.auth_data.chap.
4979 intr_chap_name_length,
4980 (char *)&boot_conn->negotiated_login_options.
4981 auth_data.chap.intr_chap_name);
4982 break;
4983 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
4984 rc = sprintf(str, "%.*s\n",
4985 boot_conn->negotiated_login_options.auth_data.chap.
4986 intr_secret_length,
4987 (char *)&boot_conn->negotiated_login_options.
4988 auth_data.chap.intr_secret);
4989 break;
4990 case ISCSI_BOOT_TGT_FLAGS:
4991 rc = sprintf(str, "%d\n", BEISCSI_SYSFS_ISCSI_BOOT_FLAGS);
4992 break;
4993 case ISCSI_BOOT_TGT_NIC_ASSOC:
4994 rc = sprintf(str, "0\n");
4995 break;
4996 }
4997 return rc;
4998 }
4999
beiscsi_show_boot_ini_info(void * data,int type,char * buf)5000 static ssize_t beiscsi_show_boot_ini_info(void *data, int type, char *buf)
5001 {
5002 struct beiscsi_hba *phba = data;
5003 char *str = buf;
5004 int rc = -EPERM;
5005
5006 switch (type) {
5007 case ISCSI_BOOT_INI_INITIATOR_NAME:
5008 rc = sprintf(str, "%s\n",
5009 phba->boot_struct.boot_sess.initiator_iscsiname);
5010 break;
5011 }
5012 return rc;
5013 }
5014
beiscsi_show_boot_eth_info(void * data,int type,char * buf)5015 static ssize_t beiscsi_show_boot_eth_info(void *data, int type, char *buf)
5016 {
5017 struct beiscsi_hba *phba = data;
5018 char *str = buf;
5019 int rc = -EPERM;
5020
5021 switch (type) {
5022 case ISCSI_BOOT_ETH_FLAGS:
5023 rc = sprintf(str, "%d\n", BEISCSI_SYSFS_ISCSI_BOOT_FLAGS);
5024 break;
5025 case ISCSI_BOOT_ETH_INDEX:
5026 rc = sprintf(str, "0\n");
5027 break;
5028 case ISCSI_BOOT_ETH_MAC:
5029 rc = beiscsi_get_macaddr(str, phba);
5030 break;
5031 }
5032 return rc;
5033 }
5034
beiscsi_tgt_get_attr_visibility(void * data,int type)5035 static umode_t beiscsi_tgt_get_attr_visibility(void *data, int type)
5036 {
5037 umode_t rc = 0;
5038
5039 switch (type) {
5040 case ISCSI_BOOT_TGT_NAME:
5041 case ISCSI_BOOT_TGT_IP_ADDR:
5042 case ISCSI_BOOT_TGT_PORT:
5043 case ISCSI_BOOT_TGT_CHAP_NAME:
5044 case ISCSI_BOOT_TGT_CHAP_SECRET:
5045 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5046 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5047 case ISCSI_BOOT_TGT_NIC_ASSOC:
5048 case ISCSI_BOOT_TGT_FLAGS:
5049 rc = S_IRUGO;
5050 break;
5051 }
5052 return rc;
5053 }
5054
beiscsi_ini_get_attr_visibility(void * data,int type)5055 static umode_t beiscsi_ini_get_attr_visibility(void *data, int type)
5056 {
5057 umode_t rc = 0;
5058
5059 switch (type) {
5060 case ISCSI_BOOT_INI_INITIATOR_NAME:
5061 rc = S_IRUGO;
5062 break;
5063 }
5064 return rc;
5065 }
5066
beiscsi_eth_get_attr_visibility(void * data,int type)5067 static umode_t beiscsi_eth_get_attr_visibility(void *data, int type)
5068 {
5069 umode_t rc = 0;
5070
5071 switch (type) {
5072 case ISCSI_BOOT_ETH_FLAGS:
5073 case ISCSI_BOOT_ETH_MAC:
5074 case ISCSI_BOOT_ETH_INDEX:
5075 rc = S_IRUGO;
5076 break;
5077 }
5078 return rc;
5079 }
5080
beiscsi_boot_kobj_release(void * data)5081 static void beiscsi_boot_kobj_release(void *data)
5082 {
5083 struct beiscsi_hba *phba = data;
5084
5085 scsi_host_put(phba->shost);
5086 }
5087
beiscsi_boot_create_kset(struct beiscsi_hba * phba)5088 static int beiscsi_boot_create_kset(struct beiscsi_hba *phba)
5089 {
5090 struct boot_struct *bs = &phba->boot_struct;
5091 struct iscsi_boot_kobj *boot_kobj;
5092
5093 if (bs->boot_kset) {
5094 __beiscsi_log(phba, KERN_ERR,
5095 "BM_%d: boot_kset already created\n");
5096 return 0;
5097 }
5098
5099 bs->boot_kset = iscsi_boot_create_host_kset(phba->shost->host_no);
5100 if (!bs->boot_kset) {
5101 __beiscsi_log(phba, KERN_ERR,
5102 "BM_%d: boot_kset alloc failed\n");
5103 return -ENOMEM;
5104 }
5105
5106 /* get shost ref because the show function will refer phba */
5107 if (!scsi_host_get(phba->shost))
5108 goto free_kset;
5109
5110 boot_kobj = iscsi_boot_create_target(bs->boot_kset, 0, phba,
5111 beiscsi_show_boot_tgt_info,
5112 beiscsi_tgt_get_attr_visibility,
5113 beiscsi_boot_kobj_release);
5114 if (!boot_kobj)
5115 goto put_shost;
5116
5117 if (!scsi_host_get(phba->shost))
5118 goto free_kset;
5119
5120 boot_kobj = iscsi_boot_create_initiator(bs->boot_kset, 0, phba,
5121 beiscsi_show_boot_ini_info,
5122 beiscsi_ini_get_attr_visibility,
5123 beiscsi_boot_kobj_release);
5124 if (!boot_kobj)
5125 goto put_shost;
5126
5127 if (!scsi_host_get(phba->shost))
5128 goto free_kset;
5129
5130 boot_kobj = iscsi_boot_create_ethernet(bs->boot_kset, 0, phba,
5131 beiscsi_show_boot_eth_info,
5132 beiscsi_eth_get_attr_visibility,
5133 beiscsi_boot_kobj_release);
5134 if (!boot_kobj)
5135 goto put_shost;
5136
5137 return 0;
5138
5139 put_shost:
5140 scsi_host_put(phba->shost);
5141 free_kset:
5142 iscsi_boot_destroy_kset(bs->boot_kset);
5143 bs->boot_kset = NULL;
5144 return -ENOMEM;
5145 }
5146
beiscsi_boot_work(struct work_struct * work)5147 static void beiscsi_boot_work(struct work_struct *work)
5148 {
5149 struct beiscsi_hba *phba =
5150 container_of(work, struct beiscsi_hba, boot_work);
5151 struct boot_struct *bs = &phba->boot_struct;
5152 unsigned int tag = 0;
5153
5154 if (!beiscsi_hba_is_online(phba))
5155 return;
5156
5157 beiscsi_log(phba, KERN_INFO,
5158 BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
5159 "BM_%d : %s action %d\n",
5160 __func__, phba->boot_struct.action);
5161
5162 switch (phba->boot_struct.action) {
5163 case BEISCSI_BOOT_REOPEN_SESS:
5164 tag = beiscsi_boot_reopen_sess(phba);
5165 break;
5166 case BEISCSI_BOOT_GET_SHANDLE:
5167 tag = __beiscsi_boot_get_shandle(phba, 1);
5168 break;
5169 case BEISCSI_BOOT_GET_SINFO:
5170 tag = beiscsi_boot_get_sinfo(phba);
5171 break;
5172 case BEISCSI_BOOT_LOGOUT_SESS:
5173 tag = beiscsi_boot_logout_sess(phba);
5174 break;
5175 case BEISCSI_BOOT_CREATE_KSET:
5176 beiscsi_boot_create_kset(phba);
5177 /**
5178 * updated boot_kset is made visible to all before
5179 * ending the boot work.
5180 */
5181 mb();
5182 clear_bit(BEISCSI_HBA_BOOT_WORK, &phba->state);
5183 return;
5184 }
5185 if (!tag) {
5186 if (bs->retry--)
5187 schedule_work(&phba->boot_work);
5188 else
5189 clear_bit(BEISCSI_HBA_BOOT_WORK, &phba->state);
5190 }
5191 }
5192
beiscsi_eqd_update_work(struct work_struct * work)5193 static void beiscsi_eqd_update_work(struct work_struct *work)
5194 {
5195 struct hwi_context_memory *phwi_context;
5196 struct be_set_eqd set_eqd[MAX_CPUS];
5197 struct hwi_controller *phwi_ctrlr;
5198 struct be_eq_obj *pbe_eq;
5199 struct beiscsi_hba *phba;
5200 unsigned int pps, delta;
5201 struct be_aic_obj *aic;
5202 int eqd, i, num = 0;
5203 unsigned long now;
5204
5205 phba = container_of(work, struct beiscsi_hba, eqd_update.work);
5206 if (!beiscsi_hba_is_online(phba))
5207 return;
5208
5209 phwi_ctrlr = phba->phwi_ctrlr;
5210 phwi_context = phwi_ctrlr->phwi_ctxt;
5211
5212 for (i = 0; i <= phba->num_cpus; i++) {
5213 aic = &phba->aic_obj[i];
5214 pbe_eq = &phwi_context->be_eq[i];
5215 now = jiffies;
5216 if (!aic->jiffies || time_before(now, aic->jiffies) ||
5217 pbe_eq->cq_count < aic->eq_prev) {
5218 aic->jiffies = now;
5219 aic->eq_prev = pbe_eq->cq_count;
5220 continue;
5221 }
5222 delta = jiffies_to_msecs(now - aic->jiffies);
5223 pps = (((u32)(pbe_eq->cq_count - aic->eq_prev) * 1000) / delta);
5224 eqd = (pps / 1500) << 2;
5225
5226 if (eqd < 8)
5227 eqd = 0;
5228 eqd = min_t(u32, eqd, BEISCSI_EQ_DELAY_MAX);
5229 eqd = max_t(u32, eqd, BEISCSI_EQ_DELAY_MIN);
5230
5231 aic->jiffies = now;
5232 aic->eq_prev = pbe_eq->cq_count;
5233
5234 if (eqd != aic->prev_eqd) {
5235 set_eqd[num].delay_multiplier = (eqd * 65)/100;
5236 set_eqd[num].eq_id = pbe_eq->q.id;
5237 aic->prev_eqd = eqd;
5238 num++;
5239 }
5240 }
5241 if (num)
5242 /* completion of this is ignored */
5243 beiscsi_modify_eq_delay(phba, set_eqd, num);
5244
5245 schedule_delayed_work(&phba->eqd_update,
5246 msecs_to_jiffies(BEISCSI_EQD_UPDATE_INTERVAL));
5247 }
5248
beiscsi_hw_tpe_check(struct timer_list * t)5249 static void beiscsi_hw_tpe_check(struct timer_list *t)
5250 {
5251 struct beiscsi_hba *phba = from_timer(phba, t, hw_check);
5252 u32 wait;
5253
5254 /* if not TPE, do nothing */
5255 if (!beiscsi_detect_tpe(phba))
5256 return;
5257
5258 /* wait default 4000ms before recovering */
5259 wait = 4000;
5260 if (phba->ue2rp > BEISCSI_UE_DETECT_INTERVAL)
5261 wait = phba->ue2rp - BEISCSI_UE_DETECT_INTERVAL;
5262 queue_delayed_work(phba->wq, &phba->recover_port,
5263 msecs_to_jiffies(wait));
5264 }
5265
beiscsi_hw_health_check(struct timer_list * t)5266 static void beiscsi_hw_health_check(struct timer_list *t)
5267 {
5268 struct beiscsi_hba *phba = from_timer(phba, t, hw_check);
5269
5270 beiscsi_detect_ue(phba);
5271 if (beiscsi_detect_ue(phba)) {
5272 __beiscsi_log(phba, KERN_ERR,
5273 "BM_%d : port in error: %lx\n", phba->state);
5274 /* sessions are no longer valid, so first fail the sessions */
5275 queue_work(phba->wq, &phba->sess_work);
5276
5277 /* detect UER supported */
5278 if (!test_bit(BEISCSI_HBA_UER_SUPP, &phba->state))
5279 return;
5280 /* modify this timer to check TPE */
5281 phba->hw_check.function = beiscsi_hw_tpe_check;
5282 }
5283
5284 mod_timer(&phba->hw_check,
5285 jiffies + msecs_to_jiffies(BEISCSI_UE_DETECT_INTERVAL));
5286 }
5287
5288 /*
5289 * beiscsi_enable_port()- Enables the disabled port.
5290 * Only port resources freed in disable function are reallocated.
5291 * This is called in HBA error handling path.
5292 *
5293 * @phba: Instance of driver private structure
5294 *
5295 **/
beiscsi_enable_port(struct beiscsi_hba * phba)5296 static int beiscsi_enable_port(struct beiscsi_hba *phba)
5297 {
5298 struct hwi_context_memory *phwi_context;
5299 struct hwi_controller *phwi_ctrlr;
5300 struct be_eq_obj *pbe_eq;
5301 int ret, i;
5302
5303 if (test_bit(BEISCSI_HBA_ONLINE, &phba->state)) {
5304 __beiscsi_log(phba, KERN_ERR,
5305 "BM_%d : %s : port is online %lx\n",
5306 __func__, phba->state);
5307 return 0;
5308 }
5309
5310 ret = beiscsi_init_sliport(phba);
5311 if (ret)
5312 return ret;
5313
5314 be2iscsi_enable_msix(phba);
5315
5316 beiscsi_get_params(phba);
5317 beiscsi_set_host_data(phba);
5318 /* Re-enable UER. If different TPE occurs then it is recoverable. */
5319 beiscsi_set_uer_feature(phba);
5320
5321 phba->shost->max_id = phba->params.cxns_per_ctrl;
5322 phba->shost->can_queue = phba->params.ios_per_ctrl;
5323 ret = beiscsi_init_port(phba);
5324 if (ret < 0) {
5325 __beiscsi_log(phba, KERN_ERR,
5326 "BM_%d : init port failed\n");
5327 goto disable_msix;
5328 }
5329
5330 for (i = 0; i < MAX_MCC_CMD; i++) {
5331 init_waitqueue_head(&phba->ctrl.mcc_wait[i + 1]);
5332 phba->ctrl.mcc_tag[i] = i + 1;
5333 phba->ctrl.mcc_tag_status[i + 1] = 0;
5334 phba->ctrl.mcc_tag_available++;
5335 }
5336
5337 phwi_ctrlr = phba->phwi_ctrlr;
5338 phwi_context = phwi_ctrlr->phwi_ctxt;
5339 for (i = 0; i < phba->num_cpus; i++) {
5340 pbe_eq = &phwi_context->be_eq[i];
5341 irq_poll_init(&pbe_eq->iopoll, be_iopoll_budget, be_iopoll);
5342 }
5343
5344 i = (phba->pcidev->msix_enabled) ? i : 0;
5345 /* Work item for MCC handling */
5346 pbe_eq = &phwi_context->be_eq[i];
5347 INIT_WORK(&pbe_eq->mcc_work, beiscsi_mcc_work);
5348
5349 ret = beiscsi_init_irqs(phba);
5350 if (ret < 0) {
5351 __beiscsi_log(phba, KERN_ERR,
5352 "BM_%d : setup IRQs failed %d\n", ret);
5353 goto cleanup_port;
5354 }
5355 hwi_enable_intr(phba);
5356 /* port operational: clear all error bits */
5357 set_bit(BEISCSI_HBA_ONLINE, &phba->state);
5358 __beiscsi_log(phba, KERN_INFO,
5359 "BM_%d : port online: 0x%lx\n", phba->state);
5360
5361 /* start hw_check timer and eqd_update work */
5362 schedule_delayed_work(&phba->eqd_update,
5363 msecs_to_jiffies(BEISCSI_EQD_UPDATE_INTERVAL));
5364
5365 /**
5366 * Timer function gets modified for TPE detection.
5367 * Always reinit to do health check first.
5368 */
5369 phba->hw_check.function = beiscsi_hw_health_check;
5370 mod_timer(&phba->hw_check,
5371 jiffies + msecs_to_jiffies(BEISCSI_UE_DETECT_INTERVAL));
5372 return 0;
5373
5374 cleanup_port:
5375 for (i = 0; i < phba->num_cpus; i++) {
5376 pbe_eq = &phwi_context->be_eq[i];
5377 irq_poll_disable(&pbe_eq->iopoll);
5378 }
5379 hwi_cleanup_port(phba);
5380
5381 disable_msix:
5382 pci_free_irq_vectors(phba->pcidev);
5383 return ret;
5384 }
5385
5386 /*
5387 * beiscsi_disable_port()- Disable port and cleanup driver resources.
5388 * This is called in HBA error handling and driver removal.
5389 * @phba: Instance Priv structure
5390 * @unload: indicate driver is unloading
5391 *
5392 * Free the OS and HW resources held by the driver
5393 **/
beiscsi_disable_port(struct beiscsi_hba * phba,int unload)5394 static void beiscsi_disable_port(struct beiscsi_hba *phba, int unload)
5395 {
5396 struct hwi_context_memory *phwi_context;
5397 struct hwi_controller *phwi_ctrlr;
5398 struct be_eq_obj *pbe_eq;
5399 unsigned int i;
5400
5401 if (!test_and_clear_bit(BEISCSI_HBA_ONLINE, &phba->state))
5402 return;
5403
5404 phwi_ctrlr = phba->phwi_ctrlr;
5405 phwi_context = phwi_ctrlr->phwi_ctxt;
5406 hwi_disable_intr(phba);
5407 beiscsi_free_irqs(phba);
5408 pci_free_irq_vectors(phba->pcidev);
5409
5410 for (i = 0; i < phba->num_cpus; i++) {
5411 pbe_eq = &phwi_context->be_eq[i];
5412 irq_poll_disable(&pbe_eq->iopoll);
5413 }
5414 cancel_delayed_work_sync(&phba->eqd_update);
5415 cancel_work_sync(&phba->boot_work);
5416 /* WQ might be running cancel queued mcc_work if we are not exiting */
5417 if (!unload && beiscsi_hba_in_error(phba)) {
5418 pbe_eq = &phwi_context->be_eq[i];
5419 cancel_work_sync(&pbe_eq->mcc_work);
5420 }
5421 hwi_cleanup_port(phba);
5422 beiscsi_cleanup_port(phba);
5423 }
5424
beiscsi_sess_work(struct work_struct * work)5425 static void beiscsi_sess_work(struct work_struct *work)
5426 {
5427 struct beiscsi_hba *phba;
5428
5429 phba = container_of(work, struct beiscsi_hba, sess_work);
5430 /*
5431 * This work gets scheduled only in case of HBA error.
5432 * Old sessions are gone so need to be re-established.
5433 * iscsi_session_failure needs process context hence this work.
5434 */
5435 iscsi_host_for_each_session(phba->shost, beiscsi_session_fail);
5436 }
5437
beiscsi_recover_port(struct work_struct * work)5438 static void beiscsi_recover_port(struct work_struct *work)
5439 {
5440 struct beiscsi_hba *phba;
5441
5442 phba = container_of(work, struct beiscsi_hba, recover_port.work);
5443 beiscsi_disable_port(phba, 0);
5444 beiscsi_enable_port(phba);
5445 }
5446
beiscsi_eeh_err_detected(struct pci_dev * pdev,pci_channel_state_t state)5447 static pci_ers_result_t beiscsi_eeh_err_detected(struct pci_dev *pdev,
5448 pci_channel_state_t state)
5449 {
5450 struct beiscsi_hba *phba = NULL;
5451
5452 phba = (struct beiscsi_hba *)pci_get_drvdata(pdev);
5453 set_bit(BEISCSI_HBA_PCI_ERR, &phba->state);
5454
5455 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5456 "BM_%d : EEH error detected\n");
5457
5458 /* first stop UE detection when PCI error detected */
5459 del_timer_sync(&phba->hw_check);
5460 cancel_delayed_work_sync(&phba->recover_port);
5461
5462 /* sessions are no longer valid, so first fail the sessions */
5463 iscsi_host_for_each_session(phba->shost, beiscsi_session_fail);
5464 beiscsi_disable_port(phba, 0);
5465
5466 if (state == pci_channel_io_perm_failure) {
5467 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5468 "BM_%d : EEH : State PERM Failure");
5469 return PCI_ERS_RESULT_DISCONNECT;
5470 }
5471
5472 pci_disable_device(pdev);
5473
5474 /* The error could cause the FW to trigger a flash debug dump.
5475 * Resetting the card while flash dump is in progress
5476 * can cause it not to recover; wait for it to finish.
5477 * Wait only for first function as it is needed only once per
5478 * adapter.
5479 **/
5480 if (pdev->devfn == 0)
5481 ssleep(30);
5482
5483 return PCI_ERS_RESULT_NEED_RESET;
5484 }
5485
beiscsi_eeh_reset(struct pci_dev * pdev)5486 static pci_ers_result_t beiscsi_eeh_reset(struct pci_dev *pdev)
5487 {
5488 struct beiscsi_hba *phba = NULL;
5489 int status = 0;
5490
5491 phba = (struct beiscsi_hba *)pci_get_drvdata(pdev);
5492
5493 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5494 "BM_%d : EEH Reset\n");
5495
5496 status = pci_enable_device(pdev);
5497 if (status)
5498 return PCI_ERS_RESULT_DISCONNECT;
5499
5500 pci_set_master(pdev);
5501 pci_set_power_state(pdev, PCI_D0);
5502 pci_restore_state(pdev);
5503
5504 status = beiscsi_check_fw_rdy(phba);
5505 if (status) {
5506 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
5507 "BM_%d : EEH Reset Completed\n");
5508 } else {
5509 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
5510 "BM_%d : EEH Reset Completion Failure\n");
5511 return PCI_ERS_RESULT_DISCONNECT;
5512 }
5513
5514 return PCI_ERS_RESULT_RECOVERED;
5515 }
5516
beiscsi_eeh_resume(struct pci_dev * pdev)5517 static void beiscsi_eeh_resume(struct pci_dev *pdev)
5518 {
5519 struct beiscsi_hba *phba;
5520 int ret;
5521
5522 phba = (struct beiscsi_hba *)pci_get_drvdata(pdev);
5523 pci_save_state(pdev);
5524
5525 ret = beiscsi_enable_port(phba);
5526 if (ret)
5527 __beiscsi_log(phba, KERN_ERR,
5528 "BM_%d : AER EEH resume failed\n");
5529 }
5530
beiscsi_dev_probe(struct pci_dev * pcidev,const struct pci_device_id * id)5531 static int beiscsi_dev_probe(struct pci_dev *pcidev,
5532 const struct pci_device_id *id)
5533 {
5534 struct hwi_context_memory *phwi_context;
5535 struct hwi_controller *phwi_ctrlr;
5536 struct beiscsi_hba *phba = NULL;
5537 struct be_eq_obj *pbe_eq;
5538 unsigned int s_handle;
5539 char wq_name[20];
5540 int ret, i;
5541
5542 ret = beiscsi_enable_pci(pcidev);
5543 if (ret < 0) {
5544 dev_err(&pcidev->dev,
5545 "beiscsi_dev_probe - Failed to enable pci device\n");
5546 return ret;
5547 }
5548
5549 phba = beiscsi_hba_alloc(pcidev);
5550 if (!phba) {
5551 dev_err(&pcidev->dev,
5552 "beiscsi_dev_probe - Failed in beiscsi_hba_alloc\n");
5553 ret = -ENOMEM;
5554 goto disable_pci;
5555 }
5556
5557 /* Enable EEH reporting */
5558 ret = pci_enable_pcie_error_reporting(pcidev);
5559 if (ret)
5560 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
5561 "BM_%d : PCIe Error Reporting "
5562 "Enabling Failed\n");
5563
5564 pci_save_state(pcidev);
5565
5566 /* Initialize Driver configuration Paramters */
5567 beiscsi_hba_attrs_init(phba);
5568
5569 phba->mac_addr_set = false;
5570
5571 switch (pcidev->device) {
5572 case BE_DEVICE_ID1:
5573 case OC_DEVICE_ID1:
5574 case OC_DEVICE_ID2:
5575 phba->generation = BE_GEN2;
5576 phba->iotask_fn = beiscsi_iotask;
5577 dev_warn(&pcidev->dev,
5578 "Obsolete/Unsupported BE2 Adapter Family\n");
5579 break;
5580 case BE_DEVICE_ID2:
5581 case OC_DEVICE_ID3:
5582 phba->generation = BE_GEN3;
5583 phba->iotask_fn = beiscsi_iotask;
5584 break;
5585 case OC_SKH_ID1:
5586 phba->generation = BE_GEN4;
5587 phba->iotask_fn = beiscsi_iotask_v2;
5588 break;
5589 default:
5590 phba->generation = 0;
5591 }
5592
5593 ret = be_ctrl_init(phba, pcidev);
5594 if (ret) {
5595 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5596 "BM_%d : be_ctrl_init failed\n");
5597 goto free_hba;
5598 }
5599
5600 ret = beiscsi_init_sliport(phba);
5601 if (ret)
5602 goto free_hba;
5603
5604 spin_lock_init(&phba->io_sgl_lock);
5605 spin_lock_init(&phba->mgmt_sgl_lock);
5606 spin_lock_init(&phba->async_pdu_lock);
5607 ret = beiscsi_get_fw_config(&phba->ctrl, phba);
5608 if (ret != 0) {
5609 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5610 "BM_%d : Error getting fw config\n");
5611 goto free_port;
5612 }
5613 beiscsi_get_port_name(&phba->ctrl, phba);
5614 beiscsi_get_params(phba);
5615 beiscsi_set_host_data(phba);
5616 beiscsi_set_uer_feature(phba);
5617
5618 be2iscsi_enable_msix(phba);
5619
5620 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
5621 "BM_%d : num_cpus = %d\n",
5622 phba->num_cpus);
5623
5624 phba->shost->max_id = phba->params.cxns_per_ctrl;
5625 phba->shost->can_queue = phba->params.ios_per_ctrl;
5626 ret = beiscsi_get_memory(phba);
5627 if (ret < 0) {
5628 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5629 "BM_%d : alloc host mem failed\n");
5630 goto free_port;
5631 }
5632
5633 ret = beiscsi_init_port(phba);
5634 if (ret < 0) {
5635 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5636 "BM_%d : init port failed\n");
5637 beiscsi_free_mem(phba);
5638 goto free_port;
5639 }
5640
5641 for (i = 0; i < MAX_MCC_CMD; i++) {
5642 init_waitqueue_head(&phba->ctrl.mcc_wait[i + 1]);
5643 phba->ctrl.mcc_tag[i] = i + 1;
5644 phba->ctrl.mcc_tag_status[i + 1] = 0;
5645 phba->ctrl.mcc_tag_available++;
5646 memset(&phba->ctrl.ptag_state[i].tag_mem_state, 0,
5647 sizeof(struct be_dma_mem));
5648 }
5649
5650 phba->ctrl.mcc_alloc_index = phba->ctrl.mcc_free_index = 0;
5651
5652 snprintf(wq_name, sizeof(wq_name), "beiscsi_%02x_wq",
5653 phba->shost->host_no);
5654 phba->wq = alloc_workqueue("%s", WQ_MEM_RECLAIM, 1, wq_name);
5655 if (!phba->wq) {
5656 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5657 "BM_%d : beiscsi_dev_probe-"
5658 "Failed to allocate work queue\n");
5659 ret = -ENOMEM;
5660 goto free_twq;
5661 }
5662
5663 INIT_DELAYED_WORK(&phba->eqd_update, beiscsi_eqd_update_work);
5664
5665 phwi_ctrlr = phba->phwi_ctrlr;
5666 phwi_context = phwi_ctrlr->phwi_ctxt;
5667
5668 for (i = 0; i < phba->num_cpus; i++) {
5669 pbe_eq = &phwi_context->be_eq[i];
5670 irq_poll_init(&pbe_eq->iopoll, be_iopoll_budget, be_iopoll);
5671 }
5672
5673 i = (phba->pcidev->msix_enabled) ? i : 0;
5674 /* Work item for MCC handling */
5675 pbe_eq = &phwi_context->be_eq[i];
5676 INIT_WORK(&pbe_eq->mcc_work, beiscsi_mcc_work);
5677
5678 ret = beiscsi_init_irqs(phba);
5679 if (ret < 0) {
5680 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5681 "BM_%d : beiscsi_dev_probe-"
5682 "Failed to beiscsi_init_irqs\n");
5683 goto disable_iopoll;
5684 }
5685 hwi_enable_intr(phba);
5686
5687 ret = iscsi_host_add(phba->shost, &phba->pcidev->dev);
5688 if (ret)
5689 goto free_irqs;
5690
5691 /* set online bit after port is operational */
5692 set_bit(BEISCSI_HBA_ONLINE, &phba->state);
5693 __beiscsi_log(phba, KERN_INFO,
5694 "BM_%d : port online: 0x%lx\n", phba->state);
5695
5696 INIT_WORK(&phba->boot_work, beiscsi_boot_work);
5697 ret = beiscsi_boot_get_shandle(phba, &s_handle);
5698 if (ret > 0) {
5699 beiscsi_start_boot_work(phba, s_handle);
5700 /**
5701 * Set this bit after starting the work to let
5702 * probe handle it first.
5703 * ASYNC event can too schedule this work.
5704 */
5705 set_bit(BEISCSI_HBA_BOOT_FOUND, &phba->state);
5706 }
5707
5708 beiscsi_iface_create_default(phba);
5709 schedule_delayed_work(&phba->eqd_update,
5710 msecs_to_jiffies(BEISCSI_EQD_UPDATE_INTERVAL));
5711
5712 INIT_WORK(&phba->sess_work, beiscsi_sess_work);
5713 INIT_DELAYED_WORK(&phba->recover_port, beiscsi_recover_port);
5714 /**
5715 * Start UE detection here. UE before this will cause stall in probe
5716 * and eventually fail the probe.
5717 */
5718 timer_setup(&phba->hw_check, beiscsi_hw_health_check, 0);
5719 mod_timer(&phba->hw_check,
5720 jiffies + msecs_to_jiffies(BEISCSI_UE_DETECT_INTERVAL));
5721 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
5722 "\n\n\n BM_%d : SUCCESS - DRIVER LOADED\n\n\n");
5723 return 0;
5724
5725 free_irqs:
5726 hwi_disable_intr(phba);
5727 beiscsi_free_irqs(phba);
5728 disable_iopoll:
5729 for (i = 0; i < phba->num_cpus; i++) {
5730 pbe_eq = &phwi_context->be_eq[i];
5731 irq_poll_disable(&pbe_eq->iopoll);
5732 }
5733 destroy_workqueue(phba->wq);
5734 free_twq:
5735 hwi_cleanup_port(phba);
5736 beiscsi_cleanup_port(phba);
5737 beiscsi_free_mem(phba);
5738 free_port:
5739 dma_free_coherent(&phba->pcidev->dev,
5740 phba->ctrl.mbox_mem_alloced.size,
5741 phba->ctrl.mbox_mem_alloced.va,
5742 phba->ctrl.mbox_mem_alloced.dma);
5743 beiscsi_unmap_pci_function(phba);
5744 free_hba:
5745 pci_disable_msix(phba->pcidev);
5746 pci_dev_put(phba->pcidev);
5747 iscsi_host_free(phba->shost);
5748 pci_set_drvdata(pcidev, NULL);
5749 disable_pci:
5750 pci_release_regions(pcidev);
5751 pci_disable_device(pcidev);
5752 return ret;
5753 }
5754
beiscsi_remove(struct pci_dev * pcidev)5755 static void beiscsi_remove(struct pci_dev *pcidev)
5756 {
5757 struct beiscsi_hba *phba = NULL;
5758
5759 phba = pci_get_drvdata(pcidev);
5760 if (!phba) {
5761 dev_err(&pcidev->dev, "beiscsi_remove called with no phba\n");
5762 return;
5763 }
5764
5765 /* first stop UE detection before unloading */
5766 del_timer_sync(&phba->hw_check);
5767 cancel_delayed_work_sync(&phba->recover_port);
5768 cancel_work_sync(&phba->sess_work);
5769
5770 beiscsi_iface_destroy_default(phba);
5771 iscsi_host_remove(phba->shost);
5772 beiscsi_disable_port(phba, 1);
5773
5774 /* after cancelling boot_work */
5775 iscsi_boot_destroy_kset(phba->boot_struct.boot_kset);
5776
5777 /* free all resources */
5778 destroy_workqueue(phba->wq);
5779 beiscsi_free_mem(phba);
5780
5781 /* ctrl uninit */
5782 beiscsi_unmap_pci_function(phba);
5783 dma_free_coherent(&phba->pcidev->dev,
5784 phba->ctrl.mbox_mem_alloced.size,
5785 phba->ctrl.mbox_mem_alloced.va,
5786 phba->ctrl.mbox_mem_alloced.dma);
5787
5788 pci_dev_put(phba->pcidev);
5789 iscsi_host_free(phba->shost);
5790 pci_disable_pcie_error_reporting(pcidev);
5791 pci_set_drvdata(pcidev, NULL);
5792 pci_release_regions(pcidev);
5793 pci_disable_device(pcidev);
5794 }
5795
5796
5797 static struct pci_error_handlers beiscsi_eeh_handlers = {
5798 .error_detected = beiscsi_eeh_err_detected,
5799 .slot_reset = beiscsi_eeh_reset,
5800 .resume = beiscsi_eeh_resume,
5801 };
5802
5803 struct iscsi_transport beiscsi_iscsi_transport = {
5804 .owner = THIS_MODULE,
5805 .name = DRV_NAME,
5806 .caps = CAP_RECOVERY_L0 | CAP_HDRDGST | CAP_TEXT_NEGO |
5807 CAP_MULTI_R2T | CAP_DATADGST | CAP_DATA_PATH_OFFLOAD,
5808 .create_session = beiscsi_session_create,
5809 .destroy_session = beiscsi_session_destroy,
5810 .create_conn = beiscsi_conn_create,
5811 .bind_conn = beiscsi_conn_bind,
5812 .destroy_conn = iscsi_conn_teardown,
5813 .attr_is_visible = beiscsi_attr_is_visible,
5814 .set_iface_param = beiscsi_iface_set_param,
5815 .get_iface_param = beiscsi_iface_get_param,
5816 .set_param = beiscsi_set_param,
5817 .get_conn_param = iscsi_conn_get_param,
5818 .get_session_param = iscsi_session_get_param,
5819 .get_host_param = beiscsi_get_host_param,
5820 .start_conn = beiscsi_conn_start,
5821 .stop_conn = iscsi_conn_stop,
5822 .send_pdu = iscsi_conn_send_pdu,
5823 .xmit_task = beiscsi_task_xmit,
5824 .cleanup_task = beiscsi_cleanup_task,
5825 .alloc_pdu = beiscsi_alloc_pdu,
5826 .parse_pdu_itt = beiscsi_parse_pdu,
5827 .get_stats = beiscsi_conn_get_stats,
5828 .get_ep_param = beiscsi_ep_get_param,
5829 .ep_connect = beiscsi_ep_connect,
5830 .ep_poll = beiscsi_ep_poll,
5831 .ep_disconnect = beiscsi_ep_disconnect,
5832 .session_recovery_timedout = iscsi_session_recovery_timedout,
5833 .bsg_request = beiscsi_bsg_request,
5834 };
5835
5836 static struct pci_driver beiscsi_pci_driver = {
5837 .name = DRV_NAME,
5838 .probe = beiscsi_dev_probe,
5839 .remove = beiscsi_remove,
5840 .id_table = beiscsi_pci_id_table,
5841 .err_handler = &beiscsi_eeh_handlers
5842 };
5843
beiscsi_module_init(void)5844 static int __init beiscsi_module_init(void)
5845 {
5846 int ret;
5847
5848 beiscsi_scsi_transport =
5849 iscsi_register_transport(&beiscsi_iscsi_transport);
5850 if (!beiscsi_scsi_transport) {
5851 printk(KERN_ERR
5852 "beiscsi_module_init - Unable to register beiscsi transport.\n");
5853 return -ENOMEM;
5854 }
5855 printk(KERN_INFO "In beiscsi_module_init, tt=%p\n",
5856 &beiscsi_iscsi_transport);
5857
5858 ret = pci_register_driver(&beiscsi_pci_driver);
5859 if (ret) {
5860 printk(KERN_ERR
5861 "beiscsi_module_init - Unable to register beiscsi pci driver.\n");
5862 goto unregister_iscsi_transport;
5863 }
5864 return 0;
5865
5866 unregister_iscsi_transport:
5867 iscsi_unregister_transport(&beiscsi_iscsi_transport);
5868 return ret;
5869 }
5870
beiscsi_module_exit(void)5871 static void __exit beiscsi_module_exit(void)
5872 {
5873 pci_unregister_driver(&beiscsi_pci_driver);
5874 iscsi_unregister_transport(&beiscsi_iscsi_transport);
5875 }
5876
5877 module_init(beiscsi_module_init);
5878 module_exit(beiscsi_module_exit);
5879
