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/bsg-lib.h>
27 #include <scsi/scsi_transport_iscsi.h>
28 #include <scsi/scsi_bsg_iscsi.h>
29 #include "be_mgmt.h"
30 #include "be_iscsi.h"
31 #include "be_main.h"
32
mgmt_vendor_specific_fw_cmd(struct be_ctrl_info * ctrl,struct beiscsi_hba * phba,struct bsg_job * job,struct be_dma_mem * nonemb_cmd)33 unsigned int mgmt_vendor_specific_fw_cmd(struct be_ctrl_info *ctrl,
34 struct beiscsi_hba *phba,
35 struct bsg_job *job,
36 struct be_dma_mem *nonemb_cmd)
37 {
38 struct be_mcc_wrb *wrb;
39 struct be_sge *mcc_sge;
40 unsigned int tag = 0;
41 struct iscsi_bsg_request *bsg_req = job->request;
42 struct be_bsg_vendor_cmd *req = nonemb_cmd->va;
43 unsigned short region, sector_size, sector, offset;
44
45 nonemb_cmd->size = job->request_payload.payload_len;
46 memset(nonemb_cmd->va, 0, nonemb_cmd->size);
47 region = bsg_req->rqst_data.h_vendor.vendor_cmd[1];
48 sector_size = bsg_req->rqst_data.h_vendor.vendor_cmd[2];
49 sector = bsg_req->rqst_data.h_vendor.vendor_cmd[3];
50 offset = bsg_req->rqst_data.h_vendor.vendor_cmd[4];
51 req->region = region;
52 req->sector = sector;
53 req->offset = offset;
54
55 if (mutex_lock_interruptible(&ctrl->mbox_lock))
56 return 0;
57 switch (bsg_req->rqst_data.h_vendor.vendor_cmd[0]) {
58 case BEISCSI_WRITE_FLASH:
59 offset = sector * sector_size + offset;
60 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
61 OPCODE_COMMON_WRITE_FLASH, sizeof(*req));
62 sg_copy_to_buffer(job->request_payload.sg_list,
63 job->request_payload.sg_cnt,
64 nonemb_cmd->va + offset, job->request_len);
65 break;
66 case BEISCSI_READ_FLASH:
67 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
68 OPCODE_COMMON_READ_FLASH, sizeof(*req));
69 break;
70 default:
71 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
72 "BG_%d : Unsupported cmd = 0x%x\n\n",
73 bsg_req->rqst_data.h_vendor.vendor_cmd[0]);
74
75 mutex_unlock(&ctrl->mbox_lock);
76 return -EPERM;
77 }
78
79 wrb = alloc_mcc_wrb(phba, &tag);
80 if (!wrb) {
81 mutex_unlock(&ctrl->mbox_lock);
82 return 0;
83 }
84
85 mcc_sge = nonembedded_sgl(wrb);
86 be_wrb_hdr_prepare(wrb, nonemb_cmd->size, false,
87 job->request_payload.sg_cnt);
88 mcc_sge->pa_hi = cpu_to_le32(upper_32_bits(nonemb_cmd->dma));
89 mcc_sge->pa_lo = cpu_to_le32(nonemb_cmd->dma & 0xFFFFFFFF);
90 mcc_sge->len = cpu_to_le32(nonemb_cmd->size);
91
92 be_mcc_notify(phba, tag);
93
94 mutex_unlock(&ctrl->mbox_lock);
95 return tag;
96 }
97
98 /**
99 * mgmt_open_connection()- Establish a TCP CXN
100 * @phba: driver priv structure
101 * @dst_addr: Destination Address
102 * @beiscsi_ep: ptr to device endpoint struct
103 * @nonemb_cmd: ptr to memory allocated for command
104 *
105 * return
106 * Success: Tag number of the MBX Command issued
107 * Failure: Error code
108 **/
mgmt_open_connection(struct beiscsi_hba * phba,struct sockaddr * dst_addr,struct beiscsi_endpoint * beiscsi_ep,struct be_dma_mem * nonemb_cmd)109 int mgmt_open_connection(struct beiscsi_hba *phba,
110 struct sockaddr *dst_addr,
111 struct beiscsi_endpoint *beiscsi_ep,
112 struct be_dma_mem *nonemb_cmd)
113 {
114 struct hwi_controller *phwi_ctrlr;
115 struct hwi_context_memory *phwi_context;
116 struct sockaddr_in *daddr_in = (struct sockaddr_in *)dst_addr;
117 struct sockaddr_in6 *daddr_in6 = (struct sockaddr_in6 *)dst_addr;
118 struct be_ctrl_info *ctrl = &phba->ctrl;
119 struct be_mcc_wrb *wrb;
120 struct tcp_connect_and_offload_in_v1 *req;
121 unsigned short def_hdr_id;
122 unsigned short def_data_id;
123 struct phys_addr template_address = { 0, 0 };
124 struct phys_addr *ptemplate_address;
125 unsigned int tag = 0;
126 unsigned int i, ulp_num;
127 unsigned short cid = beiscsi_ep->ep_cid;
128 struct be_sge *sge;
129
130 if (dst_addr->sa_family != PF_INET && dst_addr->sa_family != PF_INET6) {
131 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
132 "BG_%d : unknown addr family %d\n",
133 dst_addr->sa_family);
134 return 0;
135 }
136
137 phwi_ctrlr = phba->phwi_ctrlr;
138 phwi_context = phwi_ctrlr->phwi_ctxt;
139
140 ulp_num = phwi_ctrlr->wrb_context[BE_GET_CRI_FROM_CID(cid)].ulp_num;
141
142 def_hdr_id = (unsigned short)HWI_GET_DEF_HDRQ_ID(phba, ulp_num);
143 def_data_id = (unsigned short)HWI_GET_DEF_BUFQ_ID(phba, ulp_num);
144
145 ptemplate_address = &template_address;
146 ISCSI_GET_PDU_TEMPLATE_ADDRESS(phba, ptemplate_address);
147 if (mutex_lock_interruptible(&ctrl->mbox_lock))
148 return 0;
149 wrb = alloc_mcc_wrb(phba, &tag);
150 if (!wrb) {
151 mutex_unlock(&ctrl->mbox_lock);
152 return 0;
153 }
154
155 sge = nonembedded_sgl(wrb);
156 req = nonemb_cmd->va;
157 memset(req, 0, sizeof(*req));
158
159 be_wrb_hdr_prepare(wrb, nonemb_cmd->size, false, 1);
160 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
161 OPCODE_COMMON_ISCSI_TCP_CONNECT_AND_OFFLOAD,
162 nonemb_cmd->size);
163 if (dst_addr->sa_family == PF_INET) {
164 __be32 s_addr = daddr_in->sin_addr.s_addr;
165 req->ip_address.ip_type = BEISCSI_IP_TYPE_V4;
166 req->ip_address.addr[0] = s_addr & 0x000000ff;
167 req->ip_address.addr[1] = (s_addr & 0x0000ff00) >> 8;
168 req->ip_address.addr[2] = (s_addr & 0x00ff0000) >> 16;
169 req->ip_address.addr[3] = (s_addr & 0xff000000) >> 24;
170 req->tcp_port = ntohs(daddr_in->sin_port);
171 beiscsi_ep->dst_addr = daddr_in->sin_addr.s_addr;
172 beiscsi_ep->dst_tcpport = ntohs(daddr_in->sin_port);
173 beiscsi_ep->ip_type = BEISCSI_IP_TYPE_V4;
174 } else {
175 /* else its PF_INET6 family */
176 req->ip_address.ip_type = BEISCSI_IP_TYPE_V6;
177 memcpy(&req->ip_address.addr,
178 &daddr_in6->sin6_addr.in6_u.u6_addr8, 16);
179 req->tcp_port = ntohs(daddr_in6->sin6_port);
180 beiscsi_ep->dst_tcpport = ntohs(daddr_in6->sin6_port);
181 memcpy(&beiscsi_ep->dst6_addr,
182 &daddr_in6->sin6_addr.in6_u.u6_addr8, 16);
183 beiscsi_ep->ip_type = BEISCSI_IP_TYPE_V6;
184 }
185 req->cid = cid;
186 i = phba->nxt_cqid++;
187 if (phba->nxt_cqid == phba->num_cpus)
188 phba->nxt_cqid = 0;
189 req->cq_id = phwi_context->be_cq[i].id;
190 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
191 "BG_%d : i=%d cq_id=%d\n", i, req->cq_id);
192 req->defq_id = def_hdr_id;
193 req->hdr_ring_id = def_hdr_id;
194 req->data_ring_id = def_data_id;
195 req->do_offload = 1;
196 req->dataout_template_pa.lo = ptemplate_address->lo;
197 req->dataout_template_pa.hi = ptemplate_address->hi;
198 sge->pa_hi = cpu_to_le32(upper_32_bits(nonemb_cmd->dma));
199 sge->pa_lo = cpu_to_le32(nonemb_cmd->dma & 0xFFFFFFFF);
200 sge->len = cpu_to_le32(nonemb_cmd->size);
201
202 if (!is_chip_be2_be3r(phba)) {
203 req->hdr.version = MBX_CMD_VER1;
204 req->tcp_window_size = 0x8000;
205 req->tcp_window_scale_count = 2;
206 }
207
208 be_mcc_notify(phba, tag);
209 mutex_unlock(&ctrl->mbox_lock);
210 return tag;
211 }
212
213 /**
214 * beiscsi_exec_nemb_cmd()- execute non-embedded MBX cmd
215 * @phba: driver priv structure
216 * @nonemb_cmd: DMA address of the MBX command to be issued
217 * @cbfn: callback func on MCC completion
218 * @resp_buf: buffer to copy the MBX cmd response
219 * @resp_buf_len: response length to be copied
220 *
221 **/
beiscsi_exec_nemb_cmd(struct beiscsi_hba * phba,struct be_dma_mem * nonemb_cmd,void (* cbfn)(struct beiscsi_hba *,unsigned int),void * resp_buf,u32 resp_buf_len)222 static int beiscsi_exec_nemb_cmd(struct beiscsi_hba *phba,
223 struct be_dma_mem *nonemb_cmd,
224 void (*cbfn)(struct beiscsi_hba *,
225 unsigned int),
226 void *resp_buf, u32 resp_buf_len)
227 {
228 struct be_ctrl_info *ctrl = &phba->ctrl;
229 struct be_mcc_wrb *wrb;
230 struct be_sge *sge;
231 unsigned int tag;
232 int rc = 0;
233
234 mutex_lock(&ctrl->mbox_lock);
235 wrb = alloc_mcc_wrb(phba, &tag);
236 if (!wrb) {
237 mutex_unlock(&ctrl->mbox_lock);
238 rc = -ENOMEM;
239 goto free_cmd;
240 }
241
242 sge = nonembedded_sgl(wrb);
243 be_wrb_hdr_prepare(wrb, nonemb_cmd->size, false, 1);
244 sge->pa_hi = cpu_to_le32(upper_32_bits(nonemb_cmd->dma));
245 sge->pa_lo = cpu_to_le32(lower_32_bits(nonemb_cmd->dma));
246 sge->len = cpu_to_le32(nonemb_cmd->size);
247
248 if (cbfn) {
249 struct be_dma_mem *tag_mem;
250
251 set_bit(MCC_TAG_STATE_ASYNC, &ctrl->ptag_state[tag].tag_state);
252 ctrl->ptag_state[tag].cbfn = cbfn;
253 tag_mem = &phba->ctrl.ptag_state[tag].tag_mem_state;
254
255 /* store DMA mem to be freed in callback */
256 tag_mem->size = nonemb_cmd->size;
257 tag_mem->va = nonemb_cmd->va;
258 tag_mem->dma = nonemb_cmd->dma;
259 }
260 be_mcc_notify(phba, tag);
261 mutex_unlock(&ctrl->mbox_lock);
262
263 /* with cbfn set, its async cmd, don't wait */
264 if (cbfn)
265 return 0;
266
267 rc = beiscsi_mccq_compl_wait(phba, tag, NULL, nonemb_cmd);
268
269 /* copy the response, if any */
270 if (resp_buf)
271 memcpy(resp_buf, nonemb_cmd->va, resp_buf_len);
272 /**
273 * This is special case of NTWK_GET_IF_INFO where the size of
274 * response is not known. beiscsi_if_get_info checks the return
275 * value to free DMA buffer.
276 */
277 if (rc == -EAGAIN)
278 return rc;
279
280 /**
281 * If FW is busy that is driver timed out, DMA buffer is saved with
282 * the tag, only when the cmd completes this buffer is freed.
283 */
284 if (rc == -EBUSY)
285 return rc;
286
287 free_cmd:
288 dma_free_coherent(&ctrl->pdev->dev, nonemb_cmd->size,
289 nonemb_cmd->va, nonemb_cmd->dma);
290 return rc;
291 }
292
beiscsi_prep_nemb_cmd(struct beiscsi_hba * phba,struct be_dma_mem * cmd,u8 subsystem,u8 opcode,u32 size)293 static int beiscsi_prep_nemb_cmd(struct beiscsi_hba *phba,
294 struct be_dma_mem *cmd,
295 u8 subsystem, u8 opcode, u32 size)
296 {
297 cmd->va = dma_alloc_coherent(&phba->ctrl.pdev->dev, size, &cmd->dma,
298 GFP_KERNEL);
299 if (!cmd->va) {
300 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
301 "BG_%d : Failed to allocate memory for if info\n");
302 return -ENOMEM;
303 }
304 cmd->size = size;
305 be_cmd_hdr_prepare(cmd->va, subsystem, opcode, size);
306 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
307 "BG_%d : subsystem %u cmd %u size %u\n",
308 subsystem, opcode, size);
309 return 0;
310 }
311
__beiscsi_eq_delay_compl(struct beiscsi_hba * phba,unsigned int tag)312 static void __beiscsi_eq_delay_compl(struct beiscsi_hba *phba, unsigned int tag)
313 {
314 struct be_dma_mem *tag_mem;
315
316 /* status is ignored */
317 __beiscsi_mcc_compl_status(phba, tag, NULL, NULL);
318 tag_mem = &phba->ctrl.ptag_state[tag].tag_mem_state;
319 if (tag_mem->size) {
320 dma_free_coherent(&phba->pcidev->dev, tag_mem->size,
321 tag_mem->va, tag_mem->dma);
322 tag_mem->size = 0;
323 }
324 }
325
beiscsi_modify_eq_delay(struct beiscsi_hba * phba,struct be_set_eqd * set_eqd,int num)326 int beiscsi_modify_eq_delay(struct beiscsi_hba *phba,
327 struct be_set_eqd *set_eqd, int num)
328 {
329 struct be_cmd_req_modify_eq_delay *req;
330 struct be_dma_mem nonemb_cmd;
331 int i, rc;
332
333 rc = beiscsi_prep_nemb_cmd(phba, &nonemb_cmd, CMD_SUBSYSTEM_COMMON,
334 OPCODE_COMMON_MODIFY_EQ_DELAY, sizeof(*req));
335 if (rc)
336 return rc;
337
338 req = nonemb_cmd.va;
339 req->num_eq = cpu_to_le32(num);
340 for (i = 0; i < num; i++) {
341 req->delay[i].eq_id = cpu_to_le32(set_eqd[i].eq_id);
342 req->delay[i].phase = 0;
343 req->delay[i].delay_multiplier =
344 cpu_to_le32(set_eqd[i].delay_multiplier);
345 }
346
347 return beiscsi_exec_nemb_cmd(phba, &nonemb_cmd,
348 __beiscsi_eq_delay_compl, NULL, 0);
349 }
350
351 /**
352 * beiscsi_get_initiator_name - read initiator name from flash
353 * @phba: device priv structure
354 * @name: buffer pointer
355 * @cfg: fetch user configured
356 *
357 */
beiscsi_get_initiator_name(struct beiscsi_hba * phba,char * name,bool cfg)358 int beiscsi_get_initiator_name(struct beiscsi_hba *phba, char *name, bool cfg)
359 {
360 struct be_dma_mem nonemb_cmd;
361 struct be_cmd_hba_name resp;
362 struct be_cmd_hba_name *req;
363 int rc;
364
365 rc = beiscsi_prep_nemb_cmd(phba, &nonemb_cmd, CMD_SUBSYSTEM_ISCSI_INI,
366 OPCODE_ISCSI_INI_CFG_GET_HBA_NAME, sizeof(resp));
367 if (rc)
368 return rc;
369
370 req = nonemb_cmd.va;
371 if (cfg)
372 req->hdr.version = 1;
373 rc = beiscsi_exec_nemb_cmd(phba, &nonemb_cmd, NULL,
374 &resp, sizeof(resp));
375 if (rc) {
376 beiscsi_log(phba, KERN_ERR,
377 BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
378 "BS_%d : Initiator Name MBX Failed\n");
379 return rc;
380 }
381 rc = sprintf(name, "%s\n", resp.initiator_name);
382 return rc;
383 }
384
beiscsi_if_get_handle(struct beiscsi_hba * phba)385 unsigned int beiscsi_if_get_handle(struct beiscsi_hba *phba)
386 {
387 struct be_ctrl_info *ctrl = &phba->ctrl;
388 struct be_mcc_wrb *wrb;
389 struct be_cmd_get_all_if_id_req *req;
390 struct be_cmd_get_all_if_id_req *pbe_allid;
391 unsigned int tag;
392 int status = 0;
393
394 if (mutex_lock_interruptible(&ctrl->mbox_lock))
395 return -EINTR;
396 wrb = alloc_mcc_wrb(phba, &tag);
397 if (!wrb) {
398 mutex_unlock(&ctrl->mbox_lock);
399 return -ENOMEM;
400 }
401
402 req = embedded_payload(wrb);
403 be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
404 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
405 OPCODE_COMMON_ISCSI_NTWK_GET_ALL_IF_ID,
406 sizeof(*req));
407 be_mcc_notify(phba, tag);
408 mutex_unlock(&ctrl->mbox_lock);
409
410 status = beiscsi_mccq_compl_wait(phba, tag, &wrb, NULL);
411 if (status) {
412 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
413 "BG_%d : %s failed: %d\n", __func__, status);
414 return -EBUSY;
415 }
416
417 pbe_allid = embedded_payload(wrb);
418 /* we now support only one interface per function */
419 phba->interface_handle = pbe_allid->if_hndl_list[0];
420
421 return status;
422 }
423
beiscsi_if_zero_ip(u8 * ip,u32 ip_type)424 static inline bool beiscsi_if_zero_ip(u8 *ip, u32 ip_type)
425 {
426 u32 len;
427
428 len = (ip_type < BEISCSI_IP_TYPE_V6) ? IP_V4_LEN : IP_V6_LEN;
429 while (len && !ip[len - 1])
430 len--;
431 return (len == 0);
432 }
433
beiscsi_if_mod_gw(struct beiscsi_hba * phba,u32 action,u32 ip_type,u8 * gw)434 static int beiscsi_if_mod_gw(struct beiscsi_hba *phba,
435 u32 action, u32 ip_type, u8 *gw)
436 {
437 struct be_cmd_set_def_gateway_req *req;
438 struct be_dma_mem nonemb_cmd;
439 int rt_val;
440
441 rt_val = beiscsi_prep_nemb_cmd(phba, &nonemb_cmd, CMD_SUBSYSTEM_ISCSI,
442 OPCODE_COMMON_ISCSI_NTWK_MODIFY_DEFAULT_GATEWAY,
443 sizeof(*req));
444 if (rt_val)
445 return rt_val;
446
447 req = nonemb_cmd.va;
448 req->action = action;
449 req->ip_addr.ip_type = ip_type;
450 memcpy(req->ip_addr.addr, gw,
451 (ip_type < BEISCSI_IP_TYPE_V6) ? IP_V4_LEN : IP_V6_LEN);
452 return beiscsi_exec_nemb_cmd(phba, &nonemb_cmd, NULL, NULL, 0);
453 }
454
beiscsi_if_set_gw(struct beiscsi_hba * phba,u32 ip_type,u8 * gw)455 int beiscsi_if_set_gw(struct beiscsi_hba *phba, u32 ip_type, u8 *gw)
456 {
457 struct be_cmd_get_def_gateway_resp gw_resp;
458 int rt_val;
459
460 memset(&gw_resp, 0, sizeof(gw_resp));
461 rt_val = beiscsi_if_get_gw(phba, ip_type, &gw_resp);
462 if (rt_val) {
463 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
464 "BG_%d : Failed to Get Gateway Addr\n");
465 return rt_val;
466 }
467
468 if (!beiscsi_if_zero_ip(gw_resp.ip_addr.addr, ip_type)) {
469 rt_val = beiscsi_if_mod_gw(phba, IP_ACTION_DEL, ip_type,
470 gw_resp.ip_addr.addr);
471 if (rt_val) {
472 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
473 "BG_%d : Failed to clear Gateway Addr Set\n");
474 return rt_val;
475 }
476 }
477
478 rt_val = beiscsi_if_mod_gw(phba, IP_ACTION_ADD, ip_type, gw);
479 if (rt_val)
480 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
481 "BG_%d : Failed to Set Gateway Addr\n");
482
483 return rt_val;
484 }
485
beiscsi_if_get_gw(struct beiscsi_hba * phba,u32 ip_type,struct be_cmd_get_def_gateway_resp * resp)486 int beiscsi_if_get_gw(struct beiscsi_hba *phba, u32 ip_type,
487 struct be_cmd_get_def_gateway_resp *resp)
488 {
489 struct be_cmd_get_def_gateway_req *req;
490 struct be_dma_mem nonemb_cmd;
491 int rc;
492
493 rc = beiscsi_prep_nemb_cmd(phba, &nonemb_cmd, CMD_SUBSYSTEM_ISCSI,
494 OPCODE_COMMON_ISCSI_NTWK_GET_DEFAULT_GATEWAY,
495 sizeof(*resp));
496 if (rc)
497 return rc;
498
499 req = nonemb_cmd.va;
500 req->ip_type = ip_type;
501
502 return beiscsi_exec_nemb_cmd(phba, &nonemb_cmd, NULL,
503 resp, sizeof(*resp));
504 }
505
506 static int
beiscsi_if_clr_ip(struct beiscsi_hba * phba,struct be_cmd_get_if_info_resp * if_info)507 beiscsi_if_clr_ip(struct beiscsi_hba *phba,
508 struct be_cmd_get_if_info_resp *if_info)
509 {
510 struct be_cmd_set_ip_addr_req *req;
511 struct be_dma_mem nonemb_cmd;
512 int rc;
513
514 rc = beiscsi_prep_nemb_cmd(phba, &nonemb_cmd, CMD_SUBSYSTEM_ISCSI,
515 OPCODE_COMMON_ISCSI_NTWK_MODIFY_IP_ADDR,
516 sizeof(*req));
517 if (rc)
518 return rc;
519
520 req = nonemb_cmd.va;
521 req->ip_params.record_entry_count = 1;
522 req->ip_params.ip_record.action = IP_ACTION_DEL;
523 req->ip_params.ip_record.interface_hndl =
524 phba->interface_handle;
525 req->ip_params.ip_record.ip_addr.size_of_structure =
526 sizeof(struct be_ip_addr_subnet_format);
527 req->ip_params.ip_record.ip_addr.ip_type = if_info->ip_addr.ip_type;
528 memcpy(req->ip_params.ip_record.ip_addr.addr,
529 if_info->ip_addr.addr,
530 sizeof(if_info->ip_addr.addr));
531 memcpy(req->ip_params.ip_record.ip_addr.subnet_mask,
532 if_info->ip_addr.subnet_mask,
533 sizeof(if_info->ip_addr.subnet_mask));
534 rc = beiscsi_exec_nemb_cmd(phba, &nonemb_cmd, NULL, NULL, 0);
535 if (rc < 0 || req->ip_params.ip_record.status) {
536 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
537 "BG_%d : failed to clear IP: rc %d status %d\n",
538 rc, req->ip_params.ip_record.status);
539 }
540 return rc;
541 }
542
543 static int
beiscsi_if_set_ip(struct beiscsi_hba * phba,u8 * ip,u8 * subnet,u32 ip_type)544 beiscsi_if_set_ip(struct beiscsi_hba *phba, u8 *ip,
545 u8 *subnet, u32 ip_type)
546 {
547 struct be_cmd_set_ip_addr_req *req;
548 struct be_dma_mem nonemb_cmd;
549 uint32_t ip_len;
550 int rc;
551
552 rc = beiscsi_prep_nemb_cmd(phba, &nonemb_cmd, CMD_SUBSYSTEM_ISCSI,
553 OPCODE_COMMON_ISCSI_NTWK_MODIFY_IP_ADDR,
554 sizeof(*req));
555 if (rc)
556 return rc;
557
558 req = nonemb_cmd.va;
559 req->ip_params.record_entry_count = 1;
560 req->ip_params.ip_record.action = IP_ACTION_ADD;
561 req->ip_params.ip_record.interface_hndl =
562 phba->interface_handle;
563 req->ip_params.ip_record.ip_addr.size_of_structure =
564 sizeof(struct be_ip_addr_subnet_format);
565 req->ip_params.ip_record.ip_addr.ip_type = ip_type;
566 ip_len = (ip_type < BEISCSI_IP_TYPE_V6) ? IP_V4_LEN : IP_V6_LEN;
567 memcpy(req->ip_params.ip_record.ip_addr.addr, ip, ip_len);
568 if (subnet)
569 memcpy(req->ip_params.ip_record.ip_addr.subnet_mask,
570 subnet, ip_len);
571
572 rc = beiscsi_exec_nemb_cmd(phba, &nonemb_cmd, NULL, NULL, 0);
573 /**
574 * In some cases, host needs to look into individual record status
575 * even though FW reported success for that IOCTL.
576 */
577 if (rc < 0 || req->ip_params.ip_record.status) {
578 __beiscsi_log(phba, KERN_ERR,
579 "BG_%d : failed to set IP: rc %d status %d\n",
580 rc, req->ip_params.ip_record.status);
581 if (req->ip_params.ip_record.status)
582 rc = -EINVAL;
583 }
584 return rc;
585 }
586
beiscsi_if_en_static(struct beiscsi_hba * phba,u32 ip_type,u8 * ip,u8 * subnet)587 int beiscsi_if_en_static(struct beiscsi_hba *phba, u32 ip_type,
588 u8 *ip, u8 *subnet)
589 {
590 struct be_cmd_get_if_info_resp *if_info;
591 struct be_cmd_rel_dhcp_req *reldhcp;
592 struct be_dma_mem nonemb_cmd;
593 int rc;
594
595 rc = beiscsi_if_get_info(phba, ip_type, &if_info);
596 if (rc)
597 return rc;
598
599 if (if_info->dhcp_state) {
600 rc = beiscsi_prep_nemb_cmd(phba, &nonemb_cmd,
601 CMD_SUBSYSTEM_ISCSI,
602 OPCODE_COMMON_ISCSI_NTWK_REL_STATELESS_IP_ADDR,
603 sizeof(*reldhcp));
604 if (rc)
605 goto exit;
606
607 reldhcp = nonemb_cmd.va;
608 reldhcp->interface_hndl = phba->interface_handle;
609 reldhcp->ip_type = ip_type;
610 rc = beiscsi_exec_nemb_cmd(phba, &nonemb_cmd, NULL, NULL, 0);
611 if (rc < 0) {
612 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
613 "BG_%d : failed to release existing DHCP: %d\n",
614 rc);
615 goto exit;
616 }
617 }
618
619 /* first delete any IP set */
620 if (!beiscsi_if_zero_ip(if_info->ip_addr.addr, ip_type)) {
621 rc = beiscsi_if_clr_ip(phba, if_info);
622 if (rc)
623 goto exit;
624 }
625
626 /* if ip == NULL then this is called just to release DHCP IP */
627 if (ip)
628 rc = beiscsi_if_set_ip(phba, ip, subnet, ip_type);
629 exit:
630 kfree(if_info);
631 return rc;
632 }
633
beiscsi_if_en_dhcp(struct beiscsi_hba * phba,u32 ip_type)634 int beiscsi_if_en_dhcp(struct beiscsi_hba *phba, u32 ip_type)
635 {
636 struct be_cmd_get_def_gateway_resp gw_resp;
637 struct be_cmd_get_if_info_resp *if_info;
638 struct be_cmd_set_dhcp_req *dhcpreq;
639 struct be_dma_mem nonemb_cmd;
640 u8 *gw;
641 int rc;
642
643 rc = beiscsi_if_get_info(phba, ip_type, &if_info);
644 if (rc)
645 return rc;
646
647 if (if_info->dhcp_state) {
648 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
649 "BG_%d : DHCP Already Enabled\n");
650 goto exit;
651 }
652
653 /* first delete any IP set */
654 if (!beiscsi_if_zero_ip(if_info->ip_addr.addr, ip_type)) {
655 rc = beiscsi_if_clr_ip(phba, if_info);
656 if (rc)
657 goto exit;
658 }
659
660 /* delete gateway settings if mode change is to DHCP */
661 memset(&gw_resp, 0, sizeof(gw_resp));
662 /* use ip_type provided in if_info */
663 rc = beiscsi_if_get_gw(phba, if_info->ip_addr.ip_type, &gw_resp);
664 if (rc) {
665 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
666 "BG_%d : Failed to Get Gateway Addr\n");
667 goto exit;
668 }
669 gw = (u8 *)&gw_resp.ip_addr.addr;
670 if (!beiscsi_if_zero_ip(gw, if_info->ip_addr.ip_type)) {
671 rc = beiscsi_if_mod_gw(phba, IP_ACTION_DEL,
672 if_info->ip_addr.ip_type, gw);
673 if (rc) {
674 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
675 "BG_%d : Failed to clear Gateway Addr Set\n");
676 goto exit;
677 }
678 }
679
680 rc = beiscsi_prep_nemb_cmd(phba, &nonemb_cmd, CMD_SUBSYSTEM_ISCSI,
681 OPCODE_COMMON_ISCSI_NTWK_CONFIG_STATELESS_IP_ADDR,
682 sizeof(*dhcpreq));
683 if (rc)
684 goto exit;
685
686 dhcpreq = nonemb_cmd.va;
687 dhcpreq->flags = 1; /* 1 - blocking; 0 - non-blocking */
688 dhcpreq->retry_count = 1;
689 dhcpreq->interface_hndl = phba->interface_handle;
690 dhcpreq->ip_type = ip_type;
691 rc = beiscsi_exec_nemb_cmd(phba, &nonemb_cmd, NULL, NULL, 0);
692
693 exit:
694 kfree(if_info);
695 return rc;
696 }
697
698 /**
699 * beiscsi_if_set_vlan()- Issue and wait for CMD completion
700 * @phba: device private structure instance
701 * @vlan_tag: VLAN tag
702 *
703 * Issue the MBX Cmd and wait for the completion of the
704 * command.
705 *
706 * returns
707 * Success: 0
708 * Failure: Non-Xero Value
709 **/
beiscsi_if_set_vlan(struct beiscsi_hba * phba,uint16_t vlan_tag)710 int beiscsi_if_set_vlan(struct beiscsi_hba *phba, uint16_t vlan_tag)
711 {
712 int rc;
713 unsigned int tag;
714
715 tag = be_cmd_set_vlan(phba, vlan_tag);
716 if (!tag) {
717 beiscsi_log(phba, KERN_ERR,
718 (BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX),
719 "BG_%d : VLAN Setting Failed\n");
720 return -EBUSY;
721 }
722
723 rc = beiscsi_mccq_compl_wait(phba, tag, NULL, NULL);
724 if (rc) {
725 beiscsi_log(phba, KERN_ERR,
726 (BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX),
727 "BS_%d : VLAN MBX Cmd Failed\n");
728 return rc;
729 }
730 return rc;
731 }
732
733
beiscsi_if_get_info(struct beiscsi_hba * phba,int ip_type,struct be_cmd_get_if_info_resp ** if_info)734 int beiscsi_if_get_info(struct beiscsi_hba *phba, int ip_type,
735 struct be_cmd_get_if_info_resp **if_info)
736 {
737 struct be_cmd_get_if_info_req *req;
738 struct be_dma_mem nonemb_cmd;
739 uint32_t ioctl_size = sizeof(struct be_cmd_get_if_info_resp);
740 int rc;
741
742 rc = beiscsi_if_get_handle(phba);
743 if (rc)
744 return rc;
745
746 do {
747 rc = beiscsi_prep_nemb_cmd(phba, &nonemb_cmd,
748 CMD_SUBSYSTEM_ISCSI,
749 OPCODE_COMMON_ISCSI_NTWK_GET_IF_INFO,
750 ioctl_size);
751 if (rc)
752 return rc;
753
754 req = nonemb_cmd.va;
755 req->interface_hndl = phba->interface_handle;
756 req->ip_type = ip_type;
757
758 /* Allocate memory for if_info */
759 *if_info = kzalloc(ioctl_size, GFP_KERNEL);
760 if (!*if_info) {
761 beiscsi_log(phba, KERN_ERR,
762 BEISCSI_LOG_INIT | BEISCSI_LOG_CONFIG,
763 "BG_%d : Memory Allocation Failure\n");
764
765 /* Free the DMA memory for the IOCTL issuing */
766 dma_free_coherent(&phba->ctrl.pdev->dev,
767 nonemb_cmd.size,
768 nonemb_cmd.va,
769 nonemb_cmd.dma);
770 return -ENOMEM;
771 }
772
773 rc = beiscsi_exec_nemb_cmd(phba, &nonemb_cmd, NULL, *if_info,
774 ioctl_size);
775
776 /* Check if the error is because of Insufficent_Buffer */
777 if (rc == -EAGAIN) {
778
779 /* Get the new memory size */
780 ioctl_size = ((struct be_cmd_resp_hdr *)
781 nonemb_cmd.va)->actual_resp_len;
782 ioctl_size += sizeof(struct be_cmd_req_hdr);
783
784 /* Free the previous allocated DMA memory */
785 dma_free_coherent(&phba->ctrl.pdev->dev, nonemb_cmd.size,
786 nonemb_cmd.va,
787 nonemb_cmd.dma);
788
789 /* Free the virtual memory */
790 kfree(*if_info);
791 } else
792 break;
793 } while (true);
794 return rc;
795 }
796
mgmt_get_nic_conf(struct beiscsi_hba * phba,struct be_cmd_get_nic_conf_resp * nic)797 int mgmt_get_nic_conf(struct beiscsi_hba *phba,
798 struct be_cmd_get_nic_conf_resp *nic)
799 {
800 struct be_dma_mem nonemb_cmd;
801 int rc;
802
803 rc = beiscsi_prep_nemb_cmd(phba, &nonemb_cmd, CMD_SUBSYSTEM_ISCSI,
804 OPCODE_COMMON_ISCSI_NTWK_GET_NIC_CONFIG,
805 sizeof(*nic));
806 if (rc)
807 return rc;
808
809 return beiscsi_exec_nemb_cmd(phba, &nonemb_cmd, NULL,
810 nic, sizeof(*nic));
811 }
812
beiscsi_boot_process_compl(struct beiscsi_hba * phba,unsigned int tag)813 static void beiscsi_boot_process_compl(struct beiscsi_hba *phba,
814 unsigned int tag)
815 {
816 struct be_cmd_get_boot_target_resp *boot_resp;
817 struct be_cmd_resp_logout_fw_sess *logo_resp;
818 struct be_cmd_get_session_resp *sess_resp;
819 struct be_mcc_wrb *wrb;
820 struct boot_struct *bs;
821 int boot_work, status;
822
823 if (!test_bit(BEISCSI_HBA_BOOT_WORK, &phba->state)) {
824 __beiscsi_log(phba, KERN_ERR,
825 "BG_%d : %s no boot work %lx\n",
826 __func__, phba->state);
827 return;
828 }
829
830 if (phba->boot_struct.tag != tag) {
831 __beiscsi_log(phba, KERN_ERR,
832 "BG_%d : %s tag mismatch %d:%d\n",
833 __func__, tag, phba->boot_struct.tag);
834 return;
835 }
836 bs = &phba->boot_struct;
837 boot_work = 1;
838 status = 0;
839 switch (bs->action) {
840 case BEISCSI_BOOT_REOPEN_SESS:
841 status = __beiscsi_mcc_compl_status(phba, tag, NULL, NULL);
842 if (!status)
843 bs->action = BEISCSI_BOOT_GET_SHANDLE;
844 else
845 bs->retry--;
846 break;
847 case BEISCSI_BOOT_GET_SHANDLE:
848 status = __beiscsi_mcc_compl_status(phba, tag, &wrb, NULL);
849 if (!status) {
850 boot_resp = embedded_payload(wrb);
851 bs->s_handle = boot_resp->boot_session_handle;
852 }
853 if (bs->s_handle == BE_BOOT_INVALID_SHANDLE) {
854 bs->action = BEISCSI_BOOT_REOPEN_SESS;
855 bs->retry--;
856 } else {
857 bs->action = BEISCSI_BOOT_GET_SINFO;
858 }
859 break;
860 case BEISCSI_BOOT_GET_SINFO:
861 status = __beiscsi_mcc_compl_status(phba, tag, NULL,
862 &bs->nonemb_cmd);
863 if (!status) {
864 sess_resp = bs->nonemb_cmd.va;
865 memcpy(&bs->boot_sess, &sess_resp->session_info,
866 sizeof(struct mgmt_session_info));
867 bs->action = BEISCSI_BOOT_LOGOUT_SESS;
868 } else {
869 __beiscsi_log(phba, KERN_ERR,
870 "BG_%d : get boot session info error : 0x%x\n",
871 status);
872 boot_work = 0;
873 }
874 dma_free_coherent(&phba->ctrl.pdev->dev, bs->nonemb_cmd.size,
875 bs->nonemb_cmd.va, bs->nonemb_cmd.dma);
876 bs->nonemb_cmd.va = NULL;
877 break;
878 case BEISCSI_BOOT_LOGOUT_SESS:
879 status = __beiscsi_mcc_compl_status(phba, tag, &wrb, NULL);
880 if (!status) {
881 logo_resp = embedded_payload(wrb);
882 if (logo_resp->session_status != BE_SESS_STATUS_CLOSE) {
883 __beiscsi_log(phba, KERN_ERR,
884 "BG_%d : FW boot session logout error : 0x%x\n",
885 logo_resp->session_status);
886 }
887 }
888 /* continue to create boot_kset even if logout failed? */
889 bs->action = BEISCSI_BOOT_CREATE_KSET;
890 break;
891 default:
892 break;
893 }
894
895 /* clear the tag so no other completion matches this tag */
896 bs->tag = 0;
897 if (!bs->retry) {
898 boot_work = 0;
899 __beiscsi_log(phba, KERN_ERR,
900 "BG_%d : failed to setup boot target: status %d action %d\n",
901 status, bs->action);
902 }
903 if (!boot_work) {
904 /* wait for next event to start boot_work */
905 clear_bit(BEISCSI_HBA_BOOT_WORK, &phba->state);
906 return;
907 }
908 schedule_work(&phba->boot_work);
909 }
910
911 /**
912 * beiscsi_boot_logout_sess()- Logout from boot FW session
913 * @phba: Device priv structure instance
914 *
915 * return
916 * the TAG used for MBOX Command
917 *
918 */
beiscsi_boot_logout_sess(struct beiscsi_hba * phba)919 unsigned int beiscsi_boot_logout_sess(struct beiscsi_hba *phba)
920 {
921 struct be_ctrl_info *ctrl = &phba->ctrl;
922 struct be_mcc_wrb *wrb;
923 struct be_cmd_req_logout_fw_sess *req;
924 unsigned int tag;
925
926 mutex_lock(&ctrl->mbox_lock);
927 wrb = alloc_mcc_wrb(phba, &tag);
928 if (!wrb) {
929 mutex_unlock(&ctrl->mbox_lock);
930 return 0;
931 }
932
933 req = embedded_payload(wrb);
934 be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
935 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI_INI,
936 OPCODE_ISCSI_INI_SESSION_LOGOUT_TARGET,
937 sizeof(struct be_cmd_req_logout_fw_sess));
938 /* Use the session handle copied into boot_sess */
939 req->session_handle = phba->boot_struct.boot_sess.session_handle;
940
941 phba->boot_struct.tag = tag;
942 set_bit(MCC_TAG_STATE_ASYNC, &ctrl->ptag_state[tag].tag_state);
943 ctrl->ptag_state[tag].cbfn = beiscsi_boot_process_compl;
944
945 be_mcc_notify(phba, tag);
946 mutex_unlock(&ctrl->mbox_lock);
947
948 return tag;
949 }
950 /**
951 * beiscsi_boot_reopen_sess()- Reopen boot session
952 * @phba: Device priv structure instance
953 *
954 * return
955 * the TAG used for MBOX Command
956 *
957 **/
beiscsi_boot_reopen_sess(struct beiscsi_hba * phba)958 unsigned int beiscsi_boot_reopen_sess(struct beiscsi_hba *phba)
959 {
960 struct be_ctrl_info *ctrl = &phba->ctrl;
961 struct be_mcc_wrb *wrb;
962 struct be_cmd_reopen_session_req *req;
963 unsigned int tag;
964
965 mutex_lock(&ctrl->mbox_lock);
966 wrb = alloc_mcc_wrb(phba, &tag);
967 if (!wrb) {
968 mutex_unlock(&ctrl->mbox_lock);
969 return 0;
970 }
971
972 req = embedded_payload(wrb);
973 be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
974 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI_INI,
975 OPCODE_ISCSI_INI_DRIVER_REOPEN_ALL_SESSIONS,
976 sizeof(struct be_cmd_reopen_session_resp));
977 req->reopen_type = BE_REOPEN_BOOT_SESSIONS;
978 req->session_handle = BE_BOOT_INVALID_SHANDLE;
979
980 phba->boot_struct.tag = tag;
981 set_bit(MCC_TAG_STATE_ASYNC, &ctrl->ptag_state[tag].tag_state);
982 ctrl->ptag_state[tag].cbfn = beiscsi_boot_process_compl;
983
984 be_mcc_notify(phba, tag);
985 mutex_unlock(&ctrl->mbox_lock);
986 return tag;
987 }
988
989
990 /**
991 * beiscsi_boot_get_sinfo()- Get boot session info
992 * @phba: device priv structure instance
993 *
994 * Fetches the boot_struct.s_handle info from FW.
995 * return
996 * the TAG used for MBOX Command
997 *
998 **/
beiscsi_boot_get_sinfo(struct beiscsi_hba * phba)999 unsigned int beiscsi_boot_get_sinfo(struct beiscsi_hba *phba)
1000 {
1001 struct be_ctrl_info *ctrl = &phba->ctrl;
1002 struct be_cmd_get_session_req *req;
1003 struct be_dma_mem *nonemb_cmd;
1004 struct be_mcc_wrb *wrb;
1005 struct be_sge *sge;
1006 unsigned int tag;
1007
1008 mutex_lock(&ctrl->mbox_lock);
1009 wrb = alloc_mcc_wrb(phba, &tag);
1010 if (!wrb) {
1011 mutex_unlock(&ctrl->mbox_lock);
1012 return 0;
1013 }
1014
1015 nonemb_cmd = &phba->boot_struct.nonemb_cmd;
1016 nonemb_cmd->size = sizeof(struct be_cmd_get_session_resp);
1017 nonemb_cmd->va = dma_alloc_coherent(&phba->ctrl.pdev->dev,
1018 nonemb_cmd->size,
1019 &nonemb_cmd->dma,
1020 GFP_KERNEL);
1021 if (!nonemb_cmd->va) {
1022 mutex_unlock(&ctrl->mbox_lock);
1023 return 0;
1024 }
1025
1026 req = nonemb_cmd->va;
1027 memset(req, 0, sizeof(*req));
1028 sge = nonembedded_sgl(wrb);
1029 be_wrb_hdr_prepare(wrb, sizeof(*req), false, 1);
1030 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI_INI,
1031 OPCODE_ISCSI_INI_SESSION_GET_A_SESSION,
1032 sizeof(struct be_cmd_get_session_resp));
1033 req->session_handle = phba->boot_struct.s_handle;
1034 sge->pa_hi = cpu_to_le32(upper_32_bits(nonemb_cmd->dma));
1035 sge->pa_lo = cpu_to_le32(nonemb_cmd->dma & 0xFFFFFFFF);
1036 sge->len = cpu_to_le32(nonemb_cmd->size);
1037
1038 phba->boot_struct.tag = tag;
1039 set_bit(MCC_TAG_STATE_ASYNC, &ctrl->ptag_state[tag].tag_state);
1040 ctrl->ptag_state[tag].cbfn = beiscsi_boot_process_compl;
1041
1042 be_mcc_notify(phba, tag);
1043 mutex_unlock(&ctrl->mbox_lock);
1044 return tag;
1045 }
1046
__beiscsi_boot_get_shandle(struct beiscsi_hba * phba,int async)1047 unsigned int __beiscsi_boot_get_shandle(struct beiscsi_hba *phba, int async)
1048 {
1049 struct be_ctrl_info *ctrl = &phba->ctrl;
1050 struct be_mcc_wrb *wrb;
1051 struct be_cmd_get_boot_target_req *req;
1052 unsigned int tag;
1053
1054 mutex_lock(&ctrl->mbox_lock);
1055 wrb = alloc_mcc_wrb(phba, &tag);
1056 if (!wrb) {
1057 mutex_unlock(&ctrl->mbox_lock);
1058 return 0;
1059 }
1060
1061 req = embedded_payload(wrb);
1062 be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
1063 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI_INI,
1064 OPCODE_ISCSI_INI_BOOT_GET_BOOT_TARGET,
1065 sizeof(struct be_cmd_get_boot_target_resp));
1066
1067 if (async) {
1068 phba->boot_struct.tag = tag;
1069 set_bit(MCC_TAG_STATE_ASYNC, &ctrl->ptag_state[tag].tag_state);
1070 ctrl->ptag_state[tag].cbfn = beiscsi_boot_process_compl;
1071 }
1072
1073 be_mcc_notify(phba, tag);
1074 mutex_unlock(&ctrl->mbox_lock);
1075 return tag;
1076 }
1077
1078 /**
1079 * beiscsi_boot_get_shandle()- Get boot session handle
1080 * @phba: device priv structure instance
1081 * @s_handle: session handle returned for boot session.
1082 *
1083 * return
1084 * Success: 1
1085 * Failure: negative
1086 *
1087 **/
beiscsi_boot_get_shandle(struct beiscsi_hba * phba,unsigned int * s_handle)1088 int beiscsi_boot_get_shandle(struct beiscsi_hba *phba, unsigned int *s_handle)
1089 {
1090 struct be_cmd_get_boot_target_resp *boot_resp;
1091 struct be_mcc_wrb *wrb;
1092 unsigned int tag;
1093 int rc;
1094
1095 *s_handle = BE_BOOT_INVALID_SHANDLE;
1096 /* get configured boot session count and handle */
1097 tag = __beiscsi_boot_get_shandle(phba, 0);
1098 if (!tag) {
1099 beiscsi_log(phba, KERN_ERR,
1100 BEISCSI_LOG_CONFIG | BEISCSI_LOG_INIT,
1101 "BG_%d : Getting Boot Target Info Failed\n");
1102 return -EAGAIN;
1103 }
1104
1105 rc = beiscsi_mccq_compl_wait(phba, tag, &wrb, NULL);
1106 if (rc) {
1107 beiscsi_log(phba, KERN_ERR,
1108 BEISCSI_LOG_INIT | BEISCSI_LOG_CONFIG,
1109 "BG_%d : MBX CMD get_boot_target Failed\n");
1110 return -EBUSY;
1111 }
1112
1113 boot_resp = embedded_payload(wrb);
1114 /* check if there are any boot targets configured */
1115 if (!boot_resp->boot_session_count) {
1116 __beiscsi_log(phba, KERN_INFO,
1117 "BG_%d : No boot targets configured\n");
1118 return -ENXIO;
1119 }
1120
1121 /* only if FW has logged in to the boot target, s_handle is valid */
1122 *s_handle = boot_resp->boot_session_handle;
1123 return 1;
1124 }
1125
1126 /**
1127 * beiscsi_drvr_ver_disp()- Display the driver Name and Version
1128 * @dev: ptr to device not used.
1129 * @attr: device attribute, not used.
1130 * @buf: contains formatted text driver name and version
1131 *
1132 * return
1133 * size of the formatted string
1134 **/
1135 ssize_t
beiscsi_drvr_ver_disp(struct device * dev,struct device_attribute * attr,char * buf)1136 beiscsi_drvr_ver_disp(struct device *dev, struct device_attribute *attr,
1137 char *buf)
1138 {
1139 return snprintf(buf, PAGE_SIZE, BE_NAME "\n");
1140 }
1141
1142 /**
1143 * beiscsi_fw_ver_disp()- Display Firmware Version
1144 * @dev: ptr to device not used.
1145 * @attr: device attribute, not used.
1146 * @buf: contains formatted text Firmware version
1147 *
1148 * return
1149 * size of the formatted string
1150 **/
1151 ssize_t
beiscsi_fw_ver_disp(struct device * dev,struct device_attribute * attr,char * buf)1152 beiscsi_fw_ver_disp(struct device *dev, struct device_attribute *attr,
1153 char *buf)
1154 {
1155 struct Scsi_Host *shost = class_to_shost(dev);
1156 struct beiscsi_hba *phba = iscsi_host_priv(shost);
1157
1158 return snprintf(buf, PAGE_SIZE, "%s\n", phba->fw_ver_str);
1159 }
1160
1161 /**
1162 * beiscsi_active_session_disp()- Display Sessions Active
1163 * @dev: ptr to device not used.
1164 * @attr: device attribute, not used.
1165 * @buf: contains formatted text Session Count
1166 *
1167 * return
1168 * size of the formatted string
1169 **/
1170 ssize_t
beiscsi_active_session_disp(struct device * dev,struct device_attribute * attr,char * buf)1171 beiscsi_active_session_disp(struct device *dev, struct device_attribute *attr,
1172 char *buf)
1173 {
1174 struct Scsi_Host *shost = class_to_shost(dev);
1175 struct beiscsi_hba *phba = iscsi_host_priv(shost);
1176 uint16_t avlbl_cids = 0, ulp_num, len = 0, total_cids = 0;
1177
1178 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
1179 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
1180 avlbl_cids = BEISCSI_ULP_AVLBL_CID(phba, ulp_num);
1181 total_cids = BEISCSI_GET_CID_COUNT(phba, ulp_num);
1182 len += scnprintf(buf+len, PAGE_SIZE - len,
1183 "ULP%d : %d\n", ulp_num,
1184 (total_cids - avlbl_cids));
1185 } else
1186 len += scnprintf(buf+len, PAGE_SIZE - len,
1187 "ULP%d : %d\n", ulp_num, 0);
1188 }
1189
1190 return len;
1191 }
1192
1193 /**
1194 * beiscsi_free_session_disp()- Display Avaliable Session
1195 * @dev: ptr to device not used.
1196 * @attr: device attribute, not used.
1197 * @buf: contains formatted text Session Count
1198 *
1199 * return
1200 * size of the formatted string
1201 **/
1202 ssize_t
beiscsi_free_session_disp(struct device * dev,struct device_attribute * attr,char * buf)1203 beiscsi_free_session_disp(struct device *dev, struct device_attribute *attr,
1204 char *buf)
1205 {
1206 struct Scsi_Host *shost = class_to_shost(dev);
1207 struct beiscsi_hba *phba = iscsi_host_priv(shost);
1208 uint16_t ulp_num, len = 0;
1209
1210 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
1211 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported))
1212 len += scnprintf(buf+len, PAGE_SIZE - len,
1213 "ULP%d : %d\n", ulp_num,
1214 BEISCSI_ULP_AVLBL_CID(phba, ulp_num));
1215 else
1216 len += scnprintf(buf+len, PAGE_SIZE - len,
1217 "ULP%d : %d\n", ulp_num, 0);
1218 }
1219
1220 return len;
1221 }
1222
1223 /**
1224 * beiscsi_adap_family_disp()- Display adapter family.
1225 * @dev: ptr to device to get priv structure
1226 * @attr: device attribute, not used.
1227 * @buf: contains formatted text driver name and version
1228 *
1229 * return
1230 * size of the formatted string
1231 **/
1232 ssize_t
beiscsi_adap_family_disp(struct device * dev,struct device_attribute * attr,char * buf)1233 beiscsi_adap_family_disp(struct device *dev, struct device_attribute *attr,
1234 char *buf)
1235 {
1236 uint16_t dev_id = 0;
1237 struct Scsi_Host *shost = class_to_shost(dev);
1238 struct beiscsi_hba *phba = iscsi_host_priv(shost);
1239
1240 dev_id = phba->pcidev->device;
1241 switch (dev_id) {
1242 case BE_DEVICE_ID1:
1243 case OC_DEVICE_ID1:
1244 case OC_DEVICE_ID2:
1245 return snprintf(buf, PAGE_SIZE,
1246 "Obsolete/Unsupported BE2 Adapter Family\n");
1247 break;
1248 case BE_DEVICE_ID2:
1249 case OC_DEVICE_ID3:
1250 return snprintf(buf, PAGE_SIZE, "BE3-R Adapter Family\n");
1251 break;
1252 case OC_SKH_ID1:
1253 return snprintf(buf, PAGE_SIZE, "Skyhawk-R Adapter Family\n");
1254 break;
1255 default:
1256 return snprintf(buf, PAGE_SIZE,
1257 "Unknown Adapter Family: 0x%x\n", dev_id);
1258 break;
1259 }
1260 }
1261
1262 /**
1263 * beiscsi_phys_port()- Display Physical Port Identifier
1264 * @dev: ptr to device not used.
1265 * @attr: device attribute, not used.
1266 * @buf: contains formatted text port identifier
1267 *
1268 * return
1269 * size of the formatted string
1270 **/
1271 ssize_t
beiscsi_phys_port_disp(struct device * dev,struct device_attribute * attr,char * buf)1272 beiscsi_phys_port_disp(struct device *dev, struct device_attribute *attr,
1273 char *buf)
1274 {
1275 struct Scsi_Host *shost = class_to_shost(dev);
1276 struct beiscsi_hba *phba = iscsi_host_priv(shost);
1277
1278 return snprintf(buf, PAGE_SIZE, "Port Identifier : %u\n",
1279 phba->fw_config.phys_port);
1280 }
1281
beiscsi_offload_cxn_v0(struct beiscsi_offload_params * params,struct wrb_handle * pwrb_handle,struct be_mem_descriptor * mem_descr,struct hwi_wrb_context * pwrb_context)1282 void beiscsi_offload_cxn_v0(struct beiscsi_offload_params *params,
1283 struct wrb_handle *pwrb_handle,
1284 struct be_mem_descriptor *mem_descr,
1285 struct hwi_wrb_context *pwrb_context)
1286 {
1287 struct iscsi_wrb *pwrb = pwrb_handle->pwrb;
1288
1289 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
1290 max_send_data_segment_length, pwrb,
1291 params->dw[offsetof(struct amap_beiscsi_offload_params,
1292 max_send_data_segment_length) / 32]);
1293 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, type, pwrb,
1294 BE_TGT_CTX_UPDT_CMD);
1295 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
1296 first_burst_length,
1297 pwrb,
1298 params->dw[offsetof(struct amap_beiscsi_offload_params,
1299 first_burst_length) / 32]);
1300 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, erl, pwrb,
1301 (params->dw[offsetof(struct amap_beiscsi_offload_params,
1302 erl) / 32] & OFFLD_PARAMS_ERL));
1303 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, dde, pwrb,
1304 (params->dw[offsetof(struct amap_beiscsi_offload_params,
1305 dde) / 32] & OFFLD_PARAMS_DDE) >> 2);
1306 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, hde, pwrb,
1307 (params->dw[offsetof(struct amap_beiscsi_offload_params,
1308 hde) / 32] & OFFLD_PARAMS_HDE) >> 3);
1309 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, ir2t, pwrb,
1310 (params->dw[offsetof(struct amap_beiscsi_offload_params,
1311 ir2t) / 32] & OFFLD_PARAMS_IR2T) >> 4);
1312 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, imd, pwrb,
1313 (params->dw[offsetof(struct amap_beiscsi_offload_params,
1314 imd) / 32] & OFFLD_PARAMS_IMD) >> 5);
1315 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, stat_sn,
1316 pwrb,
1317 (params->dw[offsetof(struct amap_beiscsi_offload_params,
1318 exp_statsn) / 32] + 1));
1319 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, wrb_idx,
1320 pwrb, pwrb_handle->wrb_index);
1321
1322 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
1323 max_burst_length, pwrb, params->dw[offsetof
1324 (struct amap_beiscsi_offload_params,
1325 max_burst_length) / 32]);
1326
1327 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, ptr2nextwrb,
1328 pwrb, pwrb_handle->wrb_index);
1329 if (pwrb_context->plast_wrb)
1330 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
1331 ptr2nextwrb,
1332 pwrb_context->plast_wrb,
1333 pwrb_handle->wrb_index);
1334 pwrb_context->plast_wrb = pwrb;
1335
1336 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
1337 session_state, pwrb, 0);
1338 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, compltonack,
1339 pwrb, 1);
1340 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, notpredblq,
1341 pwrb, 0);
1342 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, mode, pwrb,
1343 0);
1344
1345 mem_descr += ISCSI_MEM_GLOBAL_HEADER;
1346 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
1347 pad_buffer_addr_hi, pwrb,
1348 mem_descr->mem_array[0].bus_address.u.a32.address_hi);
1349 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
1350 pad_buffer_addr_lo, pwrb,
1351 mem_descr->mem_array[0].bus_address.u.a32.address_lo);
1352 }
1353
beiscsi_offload_cxn_v2(struct beiscsi_offload_params * params,struct wrb_handle * pwrb_handle,struct hwi_wrb_context * pwrb_context)1354 void beiscsi_offload_cxn_v2(struct beiscsi_offload_params *params,
1355 struct wrb_handle *pwrb_handle,
1356 struct hwi_wrb_context *pwrb_context)
1357 {
1358 struct iscsi_wrb *pwrb = pwrb_handle->pwrb;
1359
1360 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2,
1361 max_burst_length, pwrb, params->dw[offsetof
1362 (struct amap_beiscsi_offload_params,
1363 max_burst_length) / 32]);
1364 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2,
1365 type, pwrb,
1366 BE_TGT_CTX_UPDT_CMD);
1367 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2,
1368 ptr2nextwrb,
1369 pwrb, pwrb_handle->wrb_index);
1370 if (pwrb_context->plast_wrb)
1371 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2,
1372 ptr2nextwrb,
1373 pwrb_context->plast_wrb,
1374 pwrb_handle->wrb_index);
1375 pwrb_context->plast_wrb = pwrb;
1376
1377 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2, wrb_idx,
1378 pwrb, pwrb_handle->wrb_index);
1379 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2,
1380 max_send_data_segment_length, pwrb,
1381 params->dw[offsetof(struct amap_beiscsi_offload_params,
1382 max_send_data_segment_length) / 32]);
1383 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2,
1384 first_burst_length, pwrb,
1385 params->dw[offsetof(struct amap_beiscsi_offload_params,
1386 first_burst_length) / 32]);
1387 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2,
1388 max_recv_dataseg_len, pwrb,
1389 params->dw[offsetof(struct amap_beiscsi_offload_params,
1390 max_recv_data_segment_length) / 32]);
1391 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2,
1392 max_cxns, pwrb, BEISCSI_MAX_CXNS);
1393 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2, erl, pwrb,
1394 (params->dw[offsetof(struct amap_beiscsi_offload_params,
1395 erl) / 32] & OFFLD_PARAMS_ERL));
1396 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2, dde, pwrb,
1397 (params->dw[offsetof(struct amap_beiscsi_offload_params,
1398 dde) / 32] & OFFLD_PARAMS_DDE) >> 2);
1399 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2, hde, pwrb,
1400 (params->dw[offsetof(struct amap_beiscsi_offload_params,
1401 hde) / 32] & OFFLD_PARAMS_HDE) >> 3);
1402 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2,
1403 ir2t, pwrb,
1404 (params->dw[offsetof(struct amap_beiscsi_offload_params,
1405 ir2t) / 32] & OFFLD_PARAMS_IR2T) >> 4);
1406 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2, imd, pwrb,
1407 (params->dw[offsetof(struct amap_beiscsi_offload_params,
1408 imd) / 32] & OFFLD_PARAMS_IMD) >> 5);
1409 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2,
1410 data_seq_inorder,
1411 pwrb,
1412 (params->dw[offsetof(struct amap_beiscsi_offload_params,
1413 data_seq_inorder) / 32] &
1414 OFFLD_PARAMS_DATA_SEQ_INORDER) >> 6);
1415 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2,
1416 pdu_seq_inorder,
1417 pwrb,
1418 (params->dw[offsetof(struct amap_beiscsi_offload_params,
1419 pdu_seq_inorder) / 32] &
1420 OFFLD_PARAMS_PDU_SEQ_INORDER) >> 7);
1421 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2, max_r2t,
1422 pwrb,
1423 (params->dw[offsetof(struct amap_beiscsi_offload_params,
1424 max_r2t) / 32] &
1425 OFFLD_PARAMS_MAX_R2T) >> 8);
1426 AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2, stat_sn,
1427 pwrb,
1428 (params->dw[offsetof(struct amap_beiscsi_offload_params,
1429 exp_statsn) / 32] + 1));
1430 }
1431
beiscsi_invalidate_cxn(struct beiscsi_hba * phba,struct beiscsi_endpoint * beiscsi_ep)1432 unsigned int beiscsi_invalidate_cxn(struct beiscsi_hba *phba,
1433 struct beiscsi_endpoint *beiscsi_ep)
1434 {
1435 struct be_invalidate_connection_params_in *req;
1436 struct be_ctrl_info *ctrl = &phba->ctrl;
1437 struct be_mcc_wrb *wrb;
1438 unsigned int tag = 0;
1439
1440 mutex_lock(&ctrl->mbox_lock);
1441 wrb = alloc_mcc_wrb(phba, &tag);
1442 if (!wrb) {
1443 mutex_unlock(&ctrl->mbox_lock);
1444 return 0;
1445 }
1446
1447 req = embedded_payload(wrb);
1448 be_wrb_hdr_prepare(wrb, sizeof(union be_invalidate_connection_params),
1449 true, 0);
1450 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI_INI,
1451 OPCODE_ISCSI_INI_DRIVER_INVALIDATE_CONNECTION,
1452 sizeof(*req));
1453 req->session_handle = beiscsi_ep->fw_handle;
1454 req->cid = beiscsi_ep->ep_cid;
1455 if (beiscsi_ep->conn)
1456 req->cleanup_type = BE_CLEANUP_TYPE_INVALIDATE;
1457 else
1458 req->cleanup_type = BE_CLEANUP_TYPE_ISSUE_TCP_RST;
1459 /**
1460 * 0 - non-persistent targets
1461 * 1 - save session info on flash
1462 */
1463 req->save_cfg = 0;
1464 be_mcc_notify(phba, tag);
1465 mutex_unlock(&ctrl->mbox_lock);
1466 return tag;
1467 }
1468
beiscsi_upload_cxn(struct beiscsi_hba * phba,struct beiscsi_endpoint * beiscsi_ep)1469 unsigned int beiscsi_upload_cxn(struct beiscsi_hba *phba,
1470 struct beiscsi_endpoint *beiscsi_ep)
1471 {
1472 struct be_ctrl_info *ctrl = &phba->ctrl;
1473 struct be_mcc_wrb *wrb;
1474 struct be_tcp_upload_params_in *req;
1475 unsigned int tag;
1476
1477 mutex_lock(&ctrl->mbox_lock);
1478 wrb = alloc_mcc_wrb(phba, &tag);
1479 if (!wrb) {
1480 mutex_unlock(&ctrl->mbox_lock);
1481 return 0;
1482 }
1483
1484 req = embedded_payload(wrb);
1485 be_wrb_hdr_prepare(wrb, sizeof(union be_tcp_upload_params), true, 0);
1486 be_cmd_hdr_prepare(&req->hdr, CMD_COMMON_TCP_UPLOAD,
1487 OPCODE_COMMON_TCP_UPLOAD, sizeof(*req));
1488 req->id = beiscsi_ep->ep_cid;
1489 if (beiscsi_ep->conn)
1490 req->upload_type = BE_UPLOAD_TYPE_GRACEFUL;
1491 else
1492 req->upload_type = BE_UPLOAD_TYPE_ABORT;
1493 be_mcc_notify(phba, tag);
1494 mutex_unlock(&ctrl->mbox_lock);
1495 return tag;
1496 }
1497
beiscsi_mgmt_invalidate_icds(struct beiscsi_hba * phba,struct invldt_cmd_tbl * inv_tbl,unsigned int nents)1498 int beiscsi_mgmt_invalidate_icds(struct beiscsi_hba *phba,
1499 struct invldt_cmd_tbl *inv_tbl,
1500 unsigned int nents)
1501 {
1502 struct be_ctrl_info *ctrl = &phba->ctrl;
1503 struct invldt_cmds_params_in *req;
1504 struct be_dma_mem nonemb_cmd;
1505 struct be_mcc_wrb *wrb;
1506 unsigned int i, tag;
1507 struct be_sge *sge;
1508 int rc;
1509
1510 if (!nents || nents > BE_INVLDT_CMD_TBL_SZ)
1511 return -EINVAL;
1512
1513 nonemb_cmd.size = sizeof(union be_invldt_cmds_params);
1514 nonemb_cmd.va = dma_alloc_coherent(&phba->ctrl.pdev->dev,
1515 nonemb_cmd.size, &nonemb_cmd.dma,
1516 GFP_KERNEL);
1517 if (!nonemb_cmd.va) {
1518 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_EH,
1519 "BM_%d : invldt_cmds_params alloc failed\n");
1520 return -ENOMEM;
1521 }
1522
1523 mutex_lock(&ctrl->mbox_lock);
1524 wrb = alloc_mcc_wrb(phba, &tag);
1525 if (!wrb) {
1526 mutex_unlock(&ctrl->mbox_lock);
1527 dma_free_coherent(&phba->ctrl.pdev->dev, nonemb_cmd.size,
1528 nonemb_cmd.va, nonemb_cmd.dma);
1529 return -ENOMEM;
1530 }
1531
1532 req = nonemb_cmd.va;
1533 be_wrb_hdr_prepare(wrb, nonemb_cmd.size, false, 1);
1534 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
1535 OPCODE_COMMON_ISCSI_ERROR_RECOVERY_INVALIDATE_COMMANDS,
1536 sizeof(*req));
1537 req->ref_handle = 0;
1538 req->cleanup_type = CMD_ISCSI_COMMAND_INVALIDATE;
1539 for (i = 0; i < nents; i++) {
1540 req->table[i].icd = inv_tbl[i].icd;
1541 req->table[i].cid = inv_tbl[i].cid;
1542 req->icd_count++;
1543 }
1544 sge = nonembedded_sgl(wrb);
1545 sge->pa_hi = cpu_to_le32(upper_32_bits(nonemb_cmd.dma));
1546 sge->pa_lo = cpu_to_le32(lower_32_bits(nonemb_cmd.dma));
1547 sge->len = cpu_to_le32(nonemb_cmd.size);
1548
1549 be_mcc_notify(phba, tag);
1550 mutex_unlock(&ctrl->mbox_lock);
1551
1552 rc = beiscsi_mccq_compl_wait(phba, tag, NULL, &nonemb_cmd);
1553 if (rc != -EBUSY)
1554 dma_free_coherent(&phba->ctrl.pdev->dev, nonemb_cmd.size,
1555 nonemb_cmd.va, nonemb_cmd.dma);
1556 return rc;
1557 }
1558
