2 * QLogic iSCSI Offload Driver
3 * Copyright (c) 2016 Cavium Inc.
5 * This software is available under the terms of the GNU General Public License
6 * (GPL) Version 2, available from the file COPYING in the main directory of
10 #include <linux/blkdev.h>
11 #include <scsi/scsi_tcq.h>
12 #include <linux/delay.h>
15 #include "qedi_iscsi.h"
17 #include "qedi_fw_iscsi.h"
18 #include "qedi_fw_scsi.h"
20 static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn,
21 struct iscsi_task *mtask);
23 void qedi_iscsi_unmap_sg_list(struct qedi_cmd *cmd)
25 struct scsi_cmnd *sc = cmd->scsi_cmd;
27 if (cmd->io_tbl.sge_valid && sc) {
28 cmd->io_tbl.sge_valid = 0;
33 static void qedi_process_logout_resp(struct qedi_ctx *qedi,
35 struct iscsi_task *task,
36 struct qedi_conn *qedi_conn)
38 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
39 struct iscsi_logout_rsp *resp_hdr;
40 struct iscsi_session *session = conn->session;
41 struct iscsi_logout_response_hdr *cqe_logout_response;
44 cmd = (struct qedi_cmd *)task->dd_data;
45 cqe_logout_response = &cqe->cqe_common.iscsi_hdr.logout_response;
46 spin_lock(&session->back_lock);
47 resp_hdr = (struct iscsi_logout_rsp *)&qedi_conn->gen_pdu.resp_hdr;
48 memset(resp_hdr, 0, sizeof(struct iscsi_hdr));
49 resp_hdr->opcode = cqe_logout_response->opcode;
50 resp_hdr->flags = cqe_logout_response->flags;
51 resp_hdr->hlength = 0;
53 resp_hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age);
54 resp_hdr->statsn = cpu_to_be32(cqe_logout_response->stat_sn);
55 resp_hdr->exp_cmdsn = cpu_to_be32(cqe_logout_response->exp_cmd_sn);
56 resp_hdr->max_cmdsn = cpu_to_be32(cqe_logout_response->max_cmd_sn);
58 resp_hdr->t2wait = cpu_to_be32(cqe_logout_response->time_2_wait);
59 resp_hdr->t2retain = cpu_to_be32(cqe_logout_response->time_2_retain);
61 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
62 "Freeing tid=0x%x for cid=0x%x\n",
63 cmd->task_id, qedi_conn->iscsi_conn_id);
65 spin_lock(&qedi_conn->list_lock);
66 if (likely(cmd->io_cmd_in_list)) {
67 cmd->io_cmd_in_list = false;
68 list_del_init(&cmd->io_cmd);
69 qedi_conn->active_cmd_count--;
71 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
72 "Active cmd list node already deleted, tid=0x%x, cid=0x%x, io_cmd_node=%p\n",
73 cmd->task_id, qedi_conn->iscsi_conn_id,
76 spin_unlock(&qedi_conn->list_lock);
78 cmd->state = RESPONSE_RECEIVED;
79 qedi_clear_task_idx(qedi, cmd->task_id);
80 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0);
82 spin_unlock(&session->back_lock);
85 static void qedi_process_text_resp(struct qedi_ctx *qedi,
87 struct iscsi_task *task,
88 struct qedi_conn *qedi_conn)
90 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
91 struct iscsi_session *session = conn->session;
92 struct iscsi_task_context *task_ctx;
93 struct iscsi_text_rsp *resp_hdr_ptr;
94 struct iscsi_text_response_hdr *cqe_text_response;
99 cmd = (struct qedi_cmd *)task->dd_data;
100 task_ctx = qedi_get_task_mem(&qedi->tasks, cmd->task_id);
102 cqe_text_response = &cqe->cqe_common.iscsi_hdr.text_response;
103 spin_lock(&session->back_lock);
104 resp_hdr_ptr = (struct iscsi_text_rsp *)&qedi_conn->gen_pdu.resp_hdr;
105 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_hdr));
106 resp_hdr_ptr->opcode = cqe_text_response->opcode;
107 resp_hdr_ptr->flags = cqe_text_response->flags;
108 resp_hdr_ptr->hlength = 0;
110 hton24(resp_hdr_ptr->dlength,
111 (cqe_text_response->hdr_second_dword &
112 ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK));
113 tmp = (u32 *)resp_hdr_ptr->dlength;
115 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid,
117 resp_hdr_ptr->ttt = cqe_text_response->ttt;
118 resp_hdr_ptr->statsn = cpu_to_be32(cqe_text_response->stat_sn);
119 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_text_response->exp_cmd_sn);
120 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_text_response->max_cmd_sn);
122 pld_len = cqe_text_response->hdr_second_dword &
123 ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK;
124 qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len;
126 memset(task_ctx, '\0', sizeof(*task_ctx));
128 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
129 "Freeing tid=0x%x for cid=0x%x\n",
130 cmd->task_id, qedi_conn->iscsi_conn_id);
132 spin_lock(&qedi_conn->list_lock);
133 if (likely(cmd->io_cmd_in_list)) {
134 cmd->io_cmd_in_list = false;
135 list_del_init(&cmd->io_cmd);
136 qedi_conn->active_cmd_count--;
138 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
139 "Active cmd list node already deleted, tid=0x%x, cid=0x%x, io_cmd_node=%p\n",
140 cmd->task_id, qedi_conn->iscsi_conn_id,
143 spin_unlock(&qedi_conn->list_lock);
145 cmd->state = RESPONSE_RECEIVED;
146 qedi_clear_task_idx(qedi, cmd->task_id);
148 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr,
149 qedi_conn->gen_pdu.resp_buf,
150 (qedi_conn->gen_pdu.resp_wr_ptr -
151 qedi_conn->gen_pdu.resp_buf));
152 spin_unlock(&session->back_lock);
155 static void qedi_tmf_resp_work(struct work_struct *work)
157 struct qedi_cmd *qedi_cmd =
158 container_of(work, struct qedi_cmd, tmf_work);
159 struct qedi_conn *qedi_conn = qedi_cmd->conn;
160 struct qedi_ctx *qedi = qedi_conn->qedi;
161 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
162 struct iscsi_session *session = conn->session;
163 struct iscsi_tm_rsp *resp_hdr_ptr;
164 struct iscsi_cls_session *cls_sess;
167 set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
168 resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf;
169 cls_sess = iscsi_conn_to_session(qedi_conn->cls_conn);
171 iscsi_block_session(session->cls_session);
172 rval = qedi_cleanup_all_io(qedi, qedi_conn, qedi_cmd->task, true);
174 qedi_clear_task_idx(qedi, qedi_cmd->task_id);
175 iscsi_unblock_session(session->cls_session);
179 iscsi_unblock_session(session->cls_session);
180 qedi_clear_task_idx(qedi, qedi_cmd->task_id);
182 spin_lock(&session->back_lock);
183 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0);
184 spin_unlock(&session->back_lock);
188 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
191 static void qedi_process_tmf_resp(struct qedi_ctx *qedi,
192 union iscsi_cqe *cqe,
193 struct iscsi_task *task,
194 struct qedi_conn *qedi_conn)
197 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
198 struct iscsi_session *session = conn->session;
199 struct iscsi_tmf_response_hdr *cqe_tmp_response;
200 struct iscsi_tm_rsp *resp_hdr_ptr;
201 struct iscsi_tm *tmf_hdr;
202 struct qedi_cmd *qedi_cmd = NULL;
205 cqe_tmp_response = &cqe->cqe_common.iscsi_hdr.tmf_response;
207 qedi_cmd = task->dd_data;
208 qedi_cmd->tmf_resp_buf = kzalloc(sizeof(*resp_hdr_ptr), GFP_KERNEL);
209 if (!qedi_cmd->tmf_resp_buf) {
210 QEDI_ERR(&qedi->dbg_ctx,
211 "Failed to allocate resp buf, cid=0x%x\n",
212 qedi_conn->iscsi_conn_id);
216 spin_lock(&session->back_lock);
217 resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf;
218 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_tm_rsp));
220 /* Fill up the header */
221 resp_hdr_ptr->opcode = cqe_tmp_response->opcode;
222 resp_hdr_ptr->flags = cqe_tmp_response->hdr_flags;
223 resp_hdr_ptr->response = cqe_tmp_response->hdr_response;
224 resp_hdr_ptr->hlength = 0;
226 hton24(resp_hdr_ptr->dlength,
227 (cqe_tmp_response->hdr_second_dword &
228 ISCSI_TMF_RESPONSE_HDR_DATA_SEG_LEN_MASK));
229 tmp = (u32 *)resp_hdr_ptr->dlength;
230 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid,
232 resp_hdr_ptr->statsn = cpu_to_be32(cqe_tmp_response->stat_sn);
233 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_tmp_response->exp_cmd_sn);
234 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_tmp_response->max_cmd_sn);
236 tmf_hdr = (struct iscsi_tm *)qedi_cmd->task->hdr;
238 spin_lock(&qedi_conn->list_lock);
239 if (likely(qedi_cmd->io_cmd_in_list)) {
240 qedi_cmd->io_cmd_in_list = false;
241 list_del_init(&qedi_cmd->io_cmd);
242 qedi_conn->active_cmd_count--;
244 spin_unlock(&qedi_conn->list_lock);
246 if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
247 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) ||
248 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
249 ISCSI_TM_FUNC_TARGET_WARM_RESET) ||
250 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
251 ISCSI_TM_FUNC_TARGET_COLD_RESET)) {
252 INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_resp_work);
253 queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work);
257 qedi_clear_task_idx(qedi, qedi_cmd->task_id);
259 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0);
263 spin_unlock(&session->back_lock);
266 static void qedi_process_login_resp(struct qedi_ctx *qedi,
267 union iscsi_cqe *cqe,
268 struct iscsi_task *task,
269 struct qedi_conn *qedi_conn)
271 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
272 struct iscsi_session *session = conn->session;
273 struct iscsi_task_context *task_ctx;
274 struct iscsi_login_rsp *resp_hdr_ptr;
275 struct iscsi_login_response_hdr *cqe_login_response;
276 struct qedi_cmd *cmd;
280 cmd = (struct qedi_cmd *)task->dd_data;
282 cqe_login_response = &cqe->cqe_common.iscsi_hdr.login_response;
283 task_ctx = qedi_get_task_mem(&qedi->tasks, cmd->task_id);
285 spin_lock(&session->back_lock);
286 resp_hdr_ptr = (struct iscsi_login_rsp *)&qedi_conn->gen_pdu.resp_hdr;
287 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_login_rsp));
288 resp_hdr_ptr->opcode = cqe_login_response->opcode;
289 resp_hdr_ptr->flags = cqe_login_response->flags_attr;
290 resp_hdr_ptr->hlength = 0;
292 hton24(resp_hdr_ptr->dlength,
293 (cqe_login_response->hdr_second_dword &
294 ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK));
295 tmp = (u32 *)resp_hdr_ptr->dlength;
296 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid,
298 resp_hdr_ptr->tsih = cqe_login_response->tsih;
299 resp_hdr_ptr->statsn = cpu_to_be32(cqe_login_response->stat_sn);
300 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_login_response->exp_cmd_sn);
301 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_login_response->max_cmd_sn);
302 resp_hdr_ptr->status_class = cqe_login_response->status_class;
303 resp_hdr_ptr->status_detail = cqe_login_response->status_detail;
304 pld_len = cqe_login_response->hdr_second_dword &
305 ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK;
306 qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len;
308 spin_lock(&qedi_conn->list_lock);
309 if (likely(cmd->io_cmd_in_list)) {
310 cmd->io_cmd_in_list = false;
311 list_del_init(&cmd->io_cmd);
312 qedi_conn->active_cmd_count--;
314 spin_unlock(&qedi_conn->list_lock);
316 memset(task_ctx, '\0', sizeof(*task_ctx));
318 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr,
319 qedi_conn->gen_pdu.resp_buf,
320 (qedi_conn->gen_pdu.resp_wr_ptr -
321 qedi_conn->gen_pdu.resp_buf));
323 spin_unlock(&session->back_lock);
324 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
325 "Freeing tid=0x%x for cid=0x%x\n",
326 cmd->task_id, qedi_conn->iscsi_conn_id);
327 cmd->state = RESPONSE_RECEIVED;
328 qedi_clear_task_idx(qedi, cmd->task_id);
331 static void qedi_get_rq_bdq_buf(struct qedi_ctx *qedi,
332 struct iscsi_cqe_unsolicited *cqe,
337 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
338 "pld_len [%d], bdq_prod_idx [%d], idx [%d]\n",
339 len, qedi->bdq_prod_idx,
340 (qedi->bdq_prod_idx % qedi->rq_num_entries));
342 /* Obtain buffer address from rqe_opaque */
343 idx = cqe->rqe_opaque.lo;
344 if (idx > (QEDI_BDQ_NUM - 1)) {
345 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
346 "wrong idx %d returned by FW, dropping the unsolicited pkt\n",
351 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
352 "rqe_opaque.lo [0x%p], rqe_opaque.hi [0x%p], idx [%d]\n",
353 cqe->rqe_opaque.lo, cqe->rqe_opaque.hi, idx);
355 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
356 "unsol_cqe_type = %d\n", cqe->unsol_cqe_type);
357 switch (cqe->unsol_cqe_type) {
358 case ISCSI_CQE_UNSOLICITED_SINGLE:
359 case ISCSI_CQE_UNSOLICITED_FIRST:
361 memcpy(ptr, (void *)qedi->bdq[idx].buf_addr, len);
363 case ISCSI_CQE_UNSOLICITED_MIDDLE:
364 case ISCSI_CQE_UNSOLICITED_LAST:
371 static void qedi_put_rq_bdq_buf(struct qedi_ctx *qedi,
372 struct iscsi_cqe_unsolicited *cqe,
379 /* Obtain buffer address from rqe_opaque */
380 idx = cqe->rqe_opaque.lo;
381 if (idx > (QEDI_BDQ_NUM - 1)) {
382 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
383 "wrong idx %d returned by FW, dropping the unsolicited pkt\n",
388 pbl = (struct scsi_bd *)qedi->bdq_pbl;
389 pbl += (qedi->bdq_prod_idx % qedi->rq_num_entries);
390 pbl->address.hi = cpu_to_le32(QEDI_U64_HI(qedi->bdq[idx].buf_dma));
391 pbl->address.lo = cpu_to_le32(QEDI_U64_LO(qedi->bdq[idx].buf_dma));
392 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
393 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx] idx [%d]\n",
394 pbl, pbl->address.hi, pbl->address.lo, idx);
396 pbl->opaque.lo = cpu_to_le32(QEDI_U64_LO(idx));
398 /* Increment producer to let f/w know we've handled the frame */
399 qedi->bdq_prod_idx += count;
401 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);
402 tmp = readw(qedi->bdq_primary_prod);
404 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
405 tmp = readw(qedi->bdq_secondary_prod);
408 static void qedi_unsol_pdu_adjust_bdq(struct qedi_ctx *qedi,
409 struct iscsi_cqe_unsolicited *cqe,
410 u32 pdu_len, u32 num_bdqs,
413 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
414 "num_bdqs [%d]\n", num_bdqs);
416 qedi_get_rq_bdq_buf(qedi, cqe, bdq_data, pdu_len);
417 qedi_put_rq_bdq_buf(qedi, cqe, (num_bdqs + 1));
420 static int qedi_process_nopin_mesg(struct qedi_ctx *qedi,
421 union iscsi_cqe *cqe,
422 struct iscsi_task *task,
423 struct qedi_conn *qedi_conn, u16 que_idx)
425 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
426 struct iscsi_session *session = conn->session;
427 struct iscsi_nop_in_hdr *cqe_nop_in;
428 struct iscsi_nopin *hdr;
429 struct qedi_cmd *cmd;
430 int tgt_async_nop = 0;
432 u32 pdu_len, num_bdqs;
433 char bdq_data[QEDI_BDQ_BUF_SIZE];
436 spin_lock_bh(&session->back_lock);
437 cqe_nop_in = &cqe->cqe_common.iscsi_hdr.nop_in;
439 pdu_len = cqe_nop_in->hdr_second_dword &
440 ISCSI_NOP_IN_HDR_DATA_SEG_LEN_MASK;
441 num_bdqs = pdu_len / QEDI_BDQ_BUF_SIZE;
443 hdr = (struct iscsi_nopin *)&qedi_conn->gen_pdu.resp_hdr;
444 memset(hdr, 0, sizeof(struct iscsi_hdr));
445 hdr->opcode = cqe_nop_in->opcode;
446 hdr->max_cmdsn = cpu_to_be32(cqe_nop_in->max_cmd_sn);
447 hdr->exp_cmdsn = cpu_to_be32(cqe_nop_in->exp_cmd_sn);
448 hdr->statsn = cpu_to_be32(cqe_nop_in->stat_sn);
449 hdr->ttt = cpu_to_be32(cqe_nop_in->ttt);
451 if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) {
452 spin_lock_irqsave(&qedi->hba_lock, flags);
453 qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited,
454 pdu_len, num_bdqs, bdq_data);
455 hdr->itt = RESERVED_ITT;
457 spin_unlock_irqrestore(&qedi->hba_lock, flags);
461 /* Response to one of our nop-outs */
464 hdr->flags = ISCSI_FLAG_CMD_FINAL;
465 hdr->itt = build_itt(cqe->cqe_solicited.itid,
469 memcpy(&hdr->lun, lun, sizeof(struct scsi_lun));
470 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
471 "Freeing tid=0x%x for cid=0x%x\n",
472 cmd->task_id, qedi_conn->iscsi_conn_id);
473 cmd->state = RESPONSE_RECEIVED;
474 spin_lock(&qedi_conn->list_lock);
475 if (likely(cmd->io_cmd_in_list)) {
476 cmd->io_cmd_in_list = false;
477 list_del_init(&cmd->io_cmd);
478 qedi_conn->active_cmd_count--;
481 spin_unlock(&qedi_conn->list_lock);
482 qedi_clear_task_idx(qedi, cmd->task_id);
486 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, bdq_data, pdu_len);
488 spin_unlock_bh(&session->back_lock);
489 return tgt_async_nop;
492 static void qedi_process_async_mesg(struct qedi_ctx *qedi,
493 union iscsi_cqe *cqe,
494 struct iscsi_task *task,
495 struct qedi_conn *qedi_conn,
498 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
499 struct iscsi_session *session = conn->session;
500 struct iscsi_async_msg_hdr *cqe_async_msg;
501 struct iscsi_async *resp_hdr;
503 u32 pdu_len, num_bdqs;
504 char bdq_data[QEDI_BDQ_BUF_SIZE];
507 spin_lock_bh(&session->back_lock);
509 cqe_async_msg = &cqe->cqe_common.iscsi_hdr.async_msg;
510 pdu_len = cqe_async_msg->hdr_second_dword &
511 ISCSI_ASYNC_MSG_HDR_DATA_SEG_LEN_MASK;
512 num_bdqs = pdu_len / QEDI_BDQ_BUF_SIZE;
514 if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) {
515 spin_lock_irqsave(&qedi->hba_lock, flags);
516 qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited,
517 pdu_len, num_bdqs, bdq_data);
518 spin_unlock_irqrestore(&qedi->hba_lock, flags);
521 resp_hdr = (struct iscsi_async *)&qedi_conn->gen_pdu.resp_hdr;
522 memset(resp_hdr, 0, sizeof(struct iscsi_hdr));
523 resp_hdr->opcode = cqe_async_msg->opcode;
524 resp_hdr->flags = 0x80;
526 lun[0] = cpu_to_be32(cqe_async_msg->lun.lo);
527 lun[1] = cpu_to_be32(cqe_async_msg->lun.hi);
528 memcpy(&resp_hdr->lun, lun, sizeof(struct scsi_lun));
529 resp_hdr->exp_cmdsn = cpu_to_be32(cqe_async_msg->exp_cmd_sn);
530 resp_hdr->max_cmdsn = cpu_to_be32(cqe_async_msg->max_cmd_sn);
531 resp_hdr->statsn = cpu_to_be32(cqe_async_msg->stat_sn);
533 resp_hdr->async_event = cqe_async_msg->async_event;
534 resp_hdr->async_vcode = cqe_async_msg->async_vcode;
536 resp_hdr->param1 = cpu_to_be16(cqe_async_msg->param1_rsrv);
537 resp_hdr->param2 = cpu_to_be16(cqe_async_msg->param2_rsrv);
538 resp_hdr->param3 = cpu_to_be16(cqe_async_msg->param3_rsrv);
540 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, bdq_data,
543 spin_unlock_bh(&session->back_lock);
546 static void qedi_process_reject_mesg(struct qedi_ctx *qedi,
547 union iscsi_cqe *cqe,
548 struct iscsi_task *task,
549 struct qedi_conn *qedi_conn,
552 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
553 struct iscsi_session *session = conn->session;
554 struct iscsi_reject_hdr *cqe_reject;
555 struct iscsi_reject *hdr;
556 u32 pld_len, num_bdqs;
559 spin_lock_bh(&session->back_lock);
560 cqe_reject = &cqe->cqe_common.iscsi_hdr.reject;
561 pld_len = cqe_reject->hdr_second_dword &
562 ISCSI_REJECT_HDR_DATA_SEG_LEN_MASK;
563 num_bdqs = pld_len / QEDI_BDQ_BUF_SIZE;
565 if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) {
566 spin_lock_irqsave(&qedi->hba_lock, flags);
567 qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited,
568 pld_len, num_bdqs, conn->data);
569 spin_unlock_irqrestore(&qedi->hba_lock, flags);
571 hdr = (struct iscsi_reject *)&qedi_conn->gen_pdu.resp_hdr;
572 memset(hdr, 0, sizeof(struct iscsi_hdr));
573 hdr->opcode = cqe_reject->opcode;
574 hdr->reason = cqe_reject->hdr_reason;
575 hdr->flags = cqe_reject->hdr_flags;
576 hton24(hdr->dlength, (cqe_reject->hdr_second_dword &
577 ISCSI_REJECT_HDR_DATA_SEG_LEN_MASK));
578 hdr->max_cmdsn = cpu_to_be32(cqe_reject->max_cmd_sn);
579 hdr->exp_cmdsn = cpu_to_be32(cqe_reject->exp_cmd_sn);
580 hdr->statsn = cpu_to_be32(cqe_reject->stat_sn);
581 hdr->ffffffff = cpu_to_be32(0xffffffff);
583 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr,
584 conn->data, pld_len);
585 spin_unlock_bh(&session->back_lock);
588 static void qedi_scsi_completion(struct qedi_ctx *qedi,
589 union iscsi_cqe *cqe,
590 struct iscsi_task *task,
591 struct iscsi_conn *conn)
593 struct scsi_cmnd *sc_cmd;
594 struct qedi_cmd *cmd = task->dd_data;
595 struct iscsi_session *session = conn->session;
596 struct iscsi_scsi_rsp *hdr;
597 struct iscsi_data_in_hdr *cqe_data_in;
599 struct qedi_conn *qedi_conn;
601 bool mark_cmd_node_deleted = false;
604 iscsi_cid = cqe->cqe_common.conn_id;
605 qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
607 cqe_data_in = &cqe->cqe_common.iscsi_hdr.data_in;
609 cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits;
611 spin_lock_bh(&session->back_lock);
612 /* get the scsi command */
613 sc_cmd = cmd->scsi_cmd;
616 QEDI_WARN(&qedi->dbg_ctx, "sc_cmd is NULL!\n");
620 if (!sc_cmd->SCp.ptr) {
621 QEDI_WARN(&qedi->dbg_ctx,
622 "SCp.ptr is NULL, returned in another context.\n");
626 if (!sc_cmd->request) {
627 QEDI_WARN(&qedi->dbg_ctx,
628 "sc_cmd->request is NULL, sc_cmd=%p.\n",
633 if (!sc_cmd->request->special) {
634 QEDI_WARN(&qedi->dbg_ctx,
635 "request->special is NULL so request not valid, sc_cmd=%p.\n",
640 if (!sc_cmd->request->q) {
641 QEDI_WARN(&qedi->dbg_ctx,
642 "request->q is NULL so request is not valid, sc_cmd=%p.\n",
647 qedi_iscsi_unmap_sg_list(cmd);
649 hdr = (struct iscsi_scsi_rsp *)task->hdr;
650 hdr->opcode = cqe_data_in->opcode;
651 hdr->max_cmdsn = cpu_to_be32(cqe_data_in->max_cmd_sn);
652 hdr->exp_cmdsn = cpu_to_be32(cqe_data_in->exp_cmd_sn);
653 hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age);
654 hdr->response = cqe_data_in->reserved1;
655 hdr->cmd_status = cqe_data_in->status_rsvd;
656 hdr->flags = cqe_data_in->flags;
657 hdr->residual_count = cpu_to_be32(cqe_data_in->residual_count);
659 if (hdr->cmd_status == SAM_STAT_CHECK_CONDITION) {
660 datalen = cqe_data_in->reserved2 &
661 ISCSI_COMMON_HDR_DATA_SEG_LEN_MASK;
662 memcpy((char *)conn->data, (char *)cmd->sense_buffer, datalen);
665 /* If f/w reports data underrun err then set residual to IO transfer
666 * length, set Underrun flag and clear Overrun flag explicitly
668 if (unlikely(cqe_err_bits &&
669 GET_FIELD(cqe_err_bits, CQE_ERROR_BITMAP_UNDER_RUN_ERR))) {
670 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
671 "Under flow itt=0x%x proto flags=0x%x tid=0x%x cid 0x%x fw resid 0x%x sc dlen 0x%x\n",
672 hdr->itt, cqe_data_in->flags, cmd->task_id,
673 qedi_conn->iscsi_conn_id, hdr->residual_count,
674 scsi_bufflen(sc_cmd));
675 hdr->residual_count = cpu_to_be32(scsi_bufflen(sc_cmd));
676 hdr->flags |= ISCSI_FLAG_CMD_UNDERFLOW;
677 hdr->flags &= (~ISCSI_FLAG_CMD_OVERFLOW);
680 spin_lock(&qedi_conn->list_lock);
681 if (likely(cmd->io_cmd_in_list)) {
682 cmd->io_cmd_in_list = false;
683 list_del_init(&cmd->io_cmd);
684 qedi_conn->active_cmd_count--;
685 mark_cmd_node_deleted = true;
687 spin_unlock(&qedi_conn->list_lock);
689 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
690 "Freeing tid=0x%x for cid=0x%x\n",
691 cmd->task_id, qedi_conn->iscsi_conn_id);
692 cmd->state = RESPONSE_RECEIVED;
694 qedi_trace_io(qedi, task, cmd->task_id, QEDI_IO_TRACE_RSP);
696 qedi_clear_task_idx(qedi, cmd->task_id);
697 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr,
698 conn->data, datalen);
700 spin_unlock_bh(&session->back_lock);
703 static void qedi_mtask_completion(struct qedi_ctx *qedi,
704 union iscsi_cqe *cqe,
705 struct iscsi_task *task,
706 struct qedi_conn *conn, uint16_t que_idx)
708 struct iscsi_conn *iscsi_conn;
711 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte;
712 iscsi_conn = conn->cls_conn->dd_data;
714 switch (hdr_opcode) {
715 case ISCSI_OPCODE_SCSI_RESPONSE:
716 case ISCSI_OPCODE_DATA_IN:
717 qedi_scsi_completion(qedi, cqe, task, iscsi_conn);
719 case ISCSI_OPCODE_LOGIN_RESPONSE:
720 qedi_process_login_resp(qedi, cqe, task, conn);
722 case ISCSI_OPCODE_TMF_RESPONSE:
723 qedi_process_tmf_resp(qedi, cqe, task, conn);
725 case ISCSI_OPCODE_TEXT_RESPONSE:
726 qedi_process_text_resp(qedi, cqe, task, conn);
728 case ISCSI_OPCODE_LOGOUT_RESPONSE:
729 qedi_process_logout_resp(qedi, cqe, task, conn);
731 case ISCSI_OPCODE_NOP_IN:
732 qedi_process_nopin_mesg(qedi, cqe, task, conn, que_idx);
735 QEDI_ERR(&qedi->dbg_ctx, "unknown opcode\n");
739 static void qedi_process_nopin_local_cmpl(struct qedi_ctx *qedi,
740 struct iscsi_cqe_solicited *cqe,
741 struct iscsi_task *task,
742 struct qedi_conn *qedi_conn)
744 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
745 struct iscsi_session *session = conn->session;
746 struct qedi_cmd *cmd = task->dd_data;
748 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UNSOL,
749 "itid=0x%x, cmd task id=0x%x\n",
750 cqe->itid, cmd->task_id);
752 cmd->state = RESPONSE_RECEIVED;
753 qedi_clear_task_idx(qedi, cmd->task_id);
755 spin_lock_bh(&session->back_lock);
756 __iscsi_put_task(task);
757 spin_unlock_bh(&session->back_lock);
760 static void qedi_process_cmd_cleanup_resp(struct qedi_ctx *qedi,
761 struct iscsi_cqe_solicited *cqe,
762 struct iscsi_task *task,
763 struct iscsi_conn *conn)
765 struct qedi_work_map *work, *work_tmp;
766 u32 proto_itt = cqe->itid;
770 struct qedi_cmd *qedi_cmd = NULL;
773 struct qedi_conn *qedi_conn;
774 struct qedi_cmd *cmd_new, *dbg_cmd;
775 struct iscsi_task *mtask;
776 struct iscsi_tm *tmf_hdr = NULL;
778 iscsi_cid = cqe->conn_id;
779 qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
781 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
782 "icid not found 0x%x\n", cqe->conn_id);
786 /* Based on this itt get the corresponding qedi_cmd */
787 spin_lock_bh(&qedi_conn->tmf_work_lock);
788 list_for_each_entry_safe(work, work_tmp, &qedi_conn->tmf_work_list,
790 if (work->rtid == proto_itt) {
791 /* We found the command */
792 qedi_cmd = work->qedi_cmd;
793 if (!qedi_cmd->list_tmf_work) {
794 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
795 "TMF work not found, cqe->tid=0x%x, cid=0x%x\n",
796 proto_itt, qedi_conn->iscsi_conn_id);
800 mtask = qedi_cmd->task;
801 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
804 list_del_init(&work->list);
806 qedi_cmd->list_tmf_work = NULL;
809 spin_unlock_bh(&qedi_conn->tmf_work_lock);
812 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
813 "TMF work, cqe->tid=0x%x, tmf flags=0x%x, cid=0x%x\n",
814 proto_itt, tmf_hdr->flags, qedi_conn->iscsi_conn_id);
816 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
817 ISCSI_TM_FUNC_ABORT_TASK) {
818 spin_lock_bh(&conn->session->back_lock);
820 protoitt = build_itt(get_itt(tmf_hdr->rtt),
822 task = iscsi_itt_to_task(conn, protoitt);
824 spin_unlock_bh(&conn->session->back_lock);
827 QEDI_NOTICE(&qedi->dbg_ctx,
828 "IO task completed, tmf rtt=0x%x, cid=0x%x\n",
829 get_itt(tmf_hdr->rtt),
830 qedi_conn->iscsi_conn_id);
834 dbg_cmd = task->dd_data;
836 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
837 "Abort tmf rtt=0x%x, i/o itt=0x%x, i/o tid=0x%x, cid=0x%x\n",
838 get_itt(tmf_hdr->rtt), get_itt(task->itt),
839 dbg_cmd->task_id, qedi_conn->iscsi_conn_id);
841 if (qedi_cmd->state == CLEANUP_WAIT_FAILED)
842 qedi_cmd->state = CLEANUP_RECV;
844 qedi_clear_task_idx(qedi_conn->qedi, rtid);
846 spin_lock(&qedi_conn->list_lock);
847 if (likely(dbg_cmd->io_cmd_in_list)) {
848 dbg_cmd->io_cmd_in_list = false;
849 list_del_init(&dbg_cmd->io_cmd);
850 qedi_conn->active_cmd_count--;
852 spin_unlock(&qedi_conn->list_lock);
853 qedi_cmd->state = CLEANUP_RECV;
854 wake_up_interruptible(&qedi_conn->wait_queue);
856 } else if (qedi_conn->cmd_cleanup_req > 0) {
857 spin_lock_bh(&conn->session->back_lock);
858 qedi_get_proto_itt(qedi, cqe->itid, &ptmp_itt);
859 protoitt = build_itt(ptmp_itt, conn->session->age);
860 task = iscsi_itt_to_task(conn, protoitt);
861 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
862 "cleanup io itid=0x%x, protoitt=0x%x, cmd_cleanup_cmpl=%d, cid=0x%x\n",
863 cqe->itid, protoitt, qedi_conn->cmd_cleanup_cmpl,
864 qedi_conn->iscsi_conn_id);
866 spin_unlock_bh(&conn->session->back_lock);
868 QEDI_NOTICE(&qedi->dbg_ctx,
869 "task is null, itid=0x%x, cid=0x%x\n",
870 cqe->itid, qedi_conn->iscsi_conn_id);
873 qedi_conn->cmd_cleanup_cmpl++;
874 wake_up(&qedi_conn->wait_queue);
875 cmd_new = task->dd_data;
877 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
878 "Freeing tid=0x%x for cid=0x%x\n",
879 cqe->itid, qedi_conn->iscsi_conn_id);
880 qedi_clear_task_idx(qedi_conn->qedi, cqe->itid);
883 qedi_get_proto_itt(qedi, cqe->itid, &ptmp_itt);
884 protoitt = build_itt(ptmp_itt, conn->session->age);
885 task = iscsi_itt_to_task(conn, protoitt);
886 QEDI_ERR(&qedi->dbg_ctx,
887 "Delayed or untracked cleanup response, itt=0x%x, tid=0x%x, cid=0x%x, task=%p\n",
888 protoitt, cqe->itid, qedi_conn->iscsi_conn_id, task);
892 void qedi_fp_process_cqes(struct qedi_work *work)
894 struct qedi_ctx *qedi = work->qedi;
895 union iscsi_cqe *cqe = &work->cqe;
896 struct iscsi_task *task = NULL;
897 struct iscsi_nopout *nopout_hdr;
898 struct qedi_conn *q_conn;
899 struct iscsi_conn *conn;
900 struct qedi_cmd *qedi_cmd;
904 u16 que_idx = work->que_idx;
907 comp_type = cqe->cqe_common.cqe_type;
908 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte;
910 cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits;
912 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
913 "fw_cid=0x%x, cqe type=0x%x, opcode=0x%x\n",
914 cqe->cqe_common.conn_id, comp_type, hdr_opcode);
916 if (comp_type >= MAX_ISCSI_CQES_TYPE) {
917 QEDI_WARN(&qedi->dbg_ctx, "Invalid CqE type\n");
921 iscsi_cid = cqe->cqe_common.conn_id;
922 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
924 QEDI_WARN(&qedi->dbg_ctx,
925 "Session no longer exists for cid=0x%x!!\n",
930 conn = q_conn->cls_conn->dd_data;
932 if (unlikely(cqe_err_bits &&
933 GET_FIELD(cqe_err_bits,
934 CQE_ERROR_BITMAP_DATA_DIGEST_ERR))) {
935 iscsi_conn_failure(conn, ISCSI_ERR_DATA_DGST);
940 case ISCSI_CQE_TYPE_SOLICITED:
941 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
942 qedi_cmd = container_of(work, struct qedi_cmd, cqe_work);
943 task = qedi_cmd->task;
945 QEDI_WARN(&qedi->dbg_ctx, "task is NULL\n");
949 /* Process NOPIN local completion */
950 nopout_hdr = (struct iscsi_nopout *)task->hdr;
951 if ((nopout_hdr->itt == RESERVED_ITT) &&
952 (cqe->cqe_solicited.itid != (u16)RESERVED_ITT)) {
953 qedi_process_nopin_local_cmpl(qedi, &cqe->cqe_solicited,
956 cqe->cqe_solicited.itid =
957 qedi_get_itt(cqe->cqe_solicited);
958 /* Process other solicited responses */
959 qedi_mtask_completion(qedi, cqe, task, q_conn, que_idx);
962 case ISCSI_CQE_TYPE_UNSOLICITED:
963 switch (hdr_opcode) {
964 case ISCSI_OPCODE_NOP_IN:
965 qedi_process_nopin_mesg(qedi, cqe, task, q_conn,
968 case ISCSI_OPCODE_ASYNC_MSG:
969 qedi_process_async_mesg(qedi, cqe, task, q_conn,
972 case ISCSI_OPCODE_REJECT:
973 qedi_process_reject_mesg(qedi, cqe, task, q_conn,
977 goto exit_fp_process;
978 case ISCSI_CQE_TYPE_DUMMY:
979 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "Dummy CqE\n");
980 goto exit_fp_process;
981 case ISCSI_CQE_TYPE_TASK_CLEANUP:
982 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "CleanUp CqE\n");
983 qedi_process_cmd_cleanup_resp(qedi, &cqe->cqe_solicited, task,
985 goto exit_fp_process;
987 QEDI_ERR(&qedi->dbg_ctx, "Error cqe.\n");
995 static void qedi_ring_doorbell(struct qedi_conn *qedi_conn)
997 struct iscsi_db_data dbell = { 0 };
1001 dbell.params |= DB_DEST_XCM << ISCSI_DB_DATA_DEST_SHIFT;
1002 dbell.params |= DB_AGG_CMD_SET << ISCSI_DB_DATA_AGG_CMD_SHIFT;
1004 DQ_XCM_ISCSI_SQ_PROD_CMD << ISCSI_DB_DATA_AGG_VAL_SEL_SHIFT;
1006 dbell.sq_prod = qedi_conn->ep->fw_sq_prod_idx;
1007 writel(*(u32 *)&dbell, qedi_conn->ep->p_doorbell);
1009 /* Make sure fw write idx is coherent, and include both memory barriers
1010 * as a failsafe as for some architectures the call is the same but on
1011 * others they are two different assembly operations.
1015 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_MP_REQ,
1016 "prod_idx=0x%x, fw_prod_idx=0x%x, cid=0x%x\n",
1017 qedi_conn->ep->sq_prod_idx, qedi_conn->ep->fw_sq_prod_idx,
1018 qedi_conn->iscsi_conn_id);
1021 static u16 qedi_get_wqe_idx(struct qedi_conn *qedi_conn)
1023 struct qedi_endpoint *ep;
1027 rval = ep->sq_prod_idx;
1029 /* Increament SQ index */
1031 ep->fw_sq_prod_idx++;
1032 if (ep->sq_prod_idx == QEDI_SQ_SIZE)
1033 ep->sq_prod_idx = 0;
1038 int qedi_send_iscsi_login(struct qedi_conn *qedi_conn,
1039 struct iscsi_task *task)
1041 struct iscsi_login_req_hdr login_req_pdu_header;
1042 struct scsi_sgl_task_params tx_sgl_task_params;
1043 struct scsi_sgl_task_params rx_sgl_task_params;
1044 struct iscsi_task_params task_params;
1045 struct iscsi_task_context *fw_task_ctx;
1046 struct qedi_ctx *qedi = qedi_conn->qedi;
1047 struct iscsi_login_req *login_hdr;
1048 struct scsi_sge *req_sge = NULL;
1049 struct scsi_sge *resp_sge = NULL;
1050 struct qedi_cmd *qedi_cmd;
1051 struct qedi_endpoint *ep;
1056 req_sge = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1057 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1058 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1060 login_hdr = (struct iscsi_login_req *)task->hdr;
1062 tid = qedi_get_task_idx(qedi);
1067 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, tid);
1068 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context));
1070 qedi_cmd->task_id = tid;
1072 memset(&task_params, 0, sizeof(task_params));
1073 memset(&login_req_pdu_header, 0, sizeof(login_req_pdu_header));
1074 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1075 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1076 /* Update header info */
1077 login_req_pdu_header.opcode = login_hdr->opcode;
1078 login_req_pdu_header.version_min = login_hdr->min_version;
1079 login_req_pdu_header.version_max = login_hdr->max_version;
1080 login_req_pdu_header.flags_attr = login_hdr->flags;
1081 login_req_pdu_header.isid_tabc = swab32p((u32 *)login_hdr->isid);
1082 login_req_pdu_header.isid_d = swab16p((u16 *)&login_hdr->isid[4]);
1084 login_req_pdu_header.tsih = login_hdr->tsih;
1085 login_req_pdu_header.hdr_second_dword = ntoh24(login_hdr->dlength);
1087 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1088 login_req_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1089 login_req_pdu_header.cid = qedi_conn->iscsi_conn_id;
1090 login_req_pdu_header.cmd_sn = be32_to_cpu(login_hdr->cmdsn);
1091 login_req_pdu_header.exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn);
1092 login_req_pdu_header.exp_stat_sn = 0;
1094 /* Fill tx AHS and rx buffer */
1095 tx_sgl_task_params.sgl =
1096 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1097 tx_sgl_task_params.sgl_phys_addr.lo =
1098 (u32)(qedi_conn->gen_pdu.req_dma_addr);
1099 tx_sgl_task_params.sgl_phys_addr.hi =
1100 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
1101 tx_sgl_task_params.total_buffer_size = ntoh24(login_hdr->dlength);
1102 tx_sgl_task_params.num_sges = 1;
1104 rx_sgl_task_params.sgl =
1105 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1106 rx_sgl_task_params.sgl_phys_addr.lo =
1107 (u32)(qedi_conn->gen_pdu.resp_dma_addr);
1108 rx_sgl_task_params.sgl_phys_addr.hi =
1109 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
1110 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len;
1111 rx_sgl_task_params.num_sges = 1;
1113 /* Fill fw input params */
1114 task_params.context = fw_task_ctx;
1115 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1116 task_params.itid = tid;
1117 task_params.cq_rss_number = 0;
1118 task_params.tx_io_size = ntoh24(login_hdr->dlength);
1119 task_params.rx_io_size = resp_sge->sge_len;
1121 sq_idx = qedi_get_wqe_idx(qedi_conn);
1122 task_params.sqe = &ep->sq[sq_idx];
1124 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1125 rval = init_initiator_login_request_task(&task_params,
1126 &login_req_pdu_header,
1127 &tx_sgl_task_params,
1128 &rx_sgl_task_params);
1132 spin_lock(&qedi_conn->list_lock);
1133 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1134 qedi_cmd->io_cmd_in_list = true;
1135 qedi_conn->active_cmd_count++;
1136 spin_unlock(&qedi_conn->list_lock);
1138 qedi_ring_doorbell(qedi_conn);
1142 int qedi_send_iscsi_logout(struct qedi_conn *qedi_conn,
1143 struct iscsi_task *task)
1145 struct iscsi_logout_req_hdr logout_pdu_header;
1146 struct scsi_sgl_task_params tx_sgl_task_params;
1147 struct scsi_sgl_task_params rx_sgl_task_params;
1148 struct iscsi_task_params task_params;
1149 struct iscsi_task_context *fw_task_ctx;
1150 struct iscsi_logout *logout_hdr = NULL;
1151 struct qedi_ctx *qedi = qedi_conn->qedi;
1152 struct qedi_cmd *qedi_cmd;
1153 struct qedi_endpoint *ep;
1158 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1159 logout_hdr = (struct iscsi_logout *)task->hdr;
1162 tid = qedi_get_task_idx(qedi);
1167 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, tid);
1168 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context));
1170 qedi_cmd->task_id = tid;
1172 memset(&task_params, 0, sizeof(task_params));
1173 memset(&logout_pdu_header, 0, sizeof(logout_pdu_header));
1174 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1175 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1177 /* Update header info */
1178 logout_pdu_header.opcode = logout_hdr->opcode;
1179 logout_pdu_header.reason_code = 0x80 | logout_hdr->flags;
1180 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1181 logout_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1182 logout_pdu_header.exp_stat_sn = be32_to_cpu(logout_hdr->exp_statsn);
1183 logout_pdu_header.cmd_sn = be32_to_cpu(logout_hdr->cmdsn);
1184 logout_pdu_header.cid = qedi_conn->iscsi_conn_id;
1186 /* Fill fw input params */
1187 task_params.context = fw_task_ctx;
1188 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1189 task_params.itid = tid;
1190 task_params.cq_rss_number = 0;
1191 task_params.tx_io_size = 0;
1192 task_params.rx_io_size = 0;
1194 sq_idx = qedi_get_wqe_idx(qedi_conn);
1195 task_params.sqe = &ep->sq[sq_idx];
1196 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1198 rval = init_initiator_logout_request_task(&task_params,
1204 spin_lock(&qedi_conn->list_lock);
1205 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1206 qedi_cmd->io_cmd_in_list = true;
1207 qedi_conn->active_cmd_count++;
1208 spin_unlock(&qedi_conn->list_lock);
1210 qedi_ring_doorbell(qedi_conn);
1214 int qedi_cleanup_all_io(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn,
1215 struct iscsi_task *task, bool in_recovery)
1218 struct iscsi_task *ctask;
1219 struct qedi_cmd *cmd, *cmd_tmp;
1220 struct iscsi_tm *tmf_hdr;
1221 unsigned int lun = 0;
1222 bool lun_reset = false;
1223 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
1224 struct iscsi_session *session = conn->session;
1226 /* From recovery, task is NULL or from tmf resp valid task */
1228 tmf_hdr = (struct iscsi_tm *)task->hdr;
1230 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1231 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) {
1233 lun = scsilun_to_int(&tmf_hdr->lun);
1237 qedi_conn->cmd_cleanup_req = 0;
1238 qedi_conn->cmd_cleanup_cmpl = 0;
1240 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1241 "active_cmd_count=%d, cid=0x%x, in_recovery=%d, lun_reset=%d\n",
1242 qedi_conn->active_cmd_count, qedi_conn->iscsi_conn_id,
1243 in_recovery, lun_reset);
1246 spin_lock_bh(&session->back_lock);
1248 spin_lock(&qedi_conn->list_lock);
1250 list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list,
1257 if (cmd->scsi_cmd && cmd->scsi_cmd->device) {
1258 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1259 "tid=0x%x itt=0x%x scsi_cmd_ptr=%p device=%p task_state=%d cmd_state=0%x cid=0x%x\n",
1260 cmd->task_id, get_itt(ctask->itt),
1261 cmd->scsi_cmd, cmd->scsi_cmd->device,
1262 ctask->state, cmd->state,
1263 qedi_conn->iscsi_conn_id);
1264 if (cmd->scsi_cmd->device->lun != lun)
1268 qedi_conn->cmd_cleanup_req++;
1269 qedi_iscsi_cleanup_task(ctask, true);
1271 cmd->io_cmd_in_list = false;
1272 list_del_init(&cmd->io_cmd);
1273 qedi_conn->active_cmd_count--;
1274 QEDI_WARN(&qedi->dbg_ctx,
1275 "Deleted active cmd list node io_cmd=%p, cid=0x%x\n",
1276 &cmd->io_cmd, qedi_conn->iscsi_conn_id);
1279 spin_unlock(&qedi_conn->list_lock);
1282 spin_unlock_bh(&session->back_lock);
1284 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1285 "cmd_cleanup_req=%d, cid=0x%x\n",
1286 qedi_conn->cmd_cleanup_req,
1287 qedi_conn->iscsi_conn_id);
1289 rval = wait_event_interruptible_timeout(qedi_conn->wait_queue,
1290 ((qedi_conn->cmd_cleanup_req ==
1291 qedi_conn->cmd_cleanup_cmpl) ||
1295 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1296 "i/o cmd_cleanup_req=%d, equal to cmd_cleanup_cmpl=%d, cid=0x%x\n",
1297 qedi_conn->cmd_cleanup_req,
1298 qedi_conn->cmd_cleanup_cmpl,
1299 qedi_conn->iscsi_conn_id);
1304 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1305 "i/o cmd_cleanup_req=%d, not equal to cmd_cleanup_cmpl=%d, cid=0x%x\n",
1306 qedi_conn->cmd_cleanup_req,
1307 qedi_conn->cmd_cleanup_cmpl,
1308 qedi_conn->iscsi_conn_id);
1310 iscsi_host_for_each_session(qedi->shost,
1311 qedi_mark_device_missing);
1312 qedi_ops->common->drain(qedi->cdev);
1314 /* Enable IOs for all other sessions except current.*/
1315 if (!wait_event_interruptible_timeout(qedi_conn->wait_queue,
1316 (qedi_conn->cmd_cleanup_req ==
1317 qedi_conn->cmd_cleanup_cmpl),
1319 iscsi_host_for_each_session(qedi->shost,
1320 qedi_mark_device_available);
1324 iscsi_host_for_each_session(qedi->shost,
1325 qedi_mark_device_available);
1330 void qedi_clearsq(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn,
1331 struct iscsi_task *task)
1333 struct qedi_endpoint *qedi_ep;
1336 qedi_ep = qedi_conn->ep;
1337 qedi_conn->cmd_cleanup_req = 0;
1338 qedi_conn->cmd_cleanup_cmpl = 0;
1341 QEDI_WARN(&qedi->dbg_ctx,
1342 "Cannot proceed, ep already disconnected, cid=0x%x\n",
1343 qedi_conn->iscsi_conn_id);
1347 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1348 "Clearing SQ for cid=0x%x, conn=%p, ep=%p\n",
1349 qedi_conn->iscsi_conn_id, qedi_conn, qedi_ep);
1351 qedi_ops->clear_sq(qedi->cdev, qedi_ep->handle);
1353 rval = qedi_cleanup_all_io(qedi, qedi_conn, task, true);
1355 QEDI_ERR(&qedi->dbg_ctx,
1356 "fatal error, need hard reset, cid=0x%x\n",
1357 qedi_conn->iscsi_conn_id);
1362 static int qedi_wait_for_cleanup_request(struct qedi_ctx *qedi,
1363 struct qedi_conn *qedi_conn,
1364 struct iscsi_task *task,
1365 struct qedi_cmd *qedi_cmd,
1366 struct qedi_work_map *list_work)
1368 struct qedi_cmd *cmd = (struct qedi_cmd *)task->dd_data;
1371 wait = wait_event_interruptible_timeout(qedi_conn->wait_queue,
1372 ((qedi_cmd->state ==
1374 ((qedi_cmd->type == TYPEIO) &&
1376 RESPONSE_RECEIVED))),
1379 qedi_cmd->state = CLEANUP_WAIT_FAILED;
1381 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1382 "Cleanup timedout tid=0x%x, issue connection recovery, cid=0x%x\n",
1383 cmd->task_id, qedi_conn->iscsi_conn_id);
1390 static void qedi_tmf_work(struct work_struct *work)
1392 struct qedi_cmd *qedi_cmd =
1393 container_of(work, struct qedi_cmd, tmf_work);
1394 struct qedi_conn *qedi_conn = qedi_cmd->conn;
1395 struct qedi_ctx *qedi = qedi_conn->qedi;
1396 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
1397 struct iscsi_cls_session *cls_sess;
1398 struct qedi_work_map *list_work = NULL;
1399 struct iscsi_task *mtask;
1400 struct qedi_cmd *cmd;
1401 struct iscsi_task *ctask;
1402 struct iscsi_tm *tmf_hdr;
1406 mtask = qedi_cmd->task;
1407 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
1408 cls_sess = iscsi_conn_to_session(qedi_conn->cls_conn);
1409 set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
1411 ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt);
1412 if (!ctask || !ctask->sc) {
1413 QEDI_ERR(&qedi->dbg_ctx, "Task already completed\n");
1417 cmd = (struct qedi_cmd *)ctask->dd_data;
1418 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1419 "Abort tmf rtt=0x%x, cmd itt=0x%x, cmd tid=0x%x, cid=0x%x\n",
1420 get_itt(tmf_hdr->rtt), get_itt(ctask->itt), cmd->task_id,
1421 qedi_conn->iscsi_conn_id);
1423 if (qedi_do_not_recover) {
1424 QEDI_ERR(&qedi->dbg_ctx, "DONT SEND CLEANUP/ABORT %d\n",
1425 qedi_do_not_recover);
1429 list_work = kzalloc(sizeof(*list_work), GFP_ATOMIC);
1431 QEDI_ERR(&qedi->dbg_ctx, "Memory allocation failed\n");
1435 qedi_cmd->type = TYPEIO;
1436 list_work->qedi_cmd = qedi_cmd;
1437 list_work->rtid = cmd->task_id;
1438 list_work->state = QEDI_WORK_SCHEDULED;
1439 qedi_cmd->list_tmf_work = list_work;
1441 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1442 "Queue tmf work=%p, list node=%p, cid=0x%x, tmf flags=0x%x\n",
1443 list_work->ptr_tmf_work, list_work, qedi_conn->iscsi_conn_id,
1446 spin_lock_bh(&qedi_conn->tmf_work_lock);
1447 list_add_tail(&list_work->list, &qedi_conn->tmf_work_list);
1448 spin_unlock_bh(&qedi_conn->tmf_work_lock);
1450 qedi_iscsi_cleanup_task(ctask, false);
1452 rval = qedi_wait_for_cleanup_request(qedi, qedi_conn, ctask, qedi_cmd,
1455 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1456 "FW cleanup got escalated, cid=0x%x\n",
1457 qedi_conn->iscsi_conn_id);
1461 tid = qedi_get_task_idx(qedi);
1463 QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n",
1464 qedi_conn->iscsi_conn_id);
1468 qedi_cmd->task_id = tid;
1469 qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task);
1472 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
1476 spin_lock_bh(&qedi_conn->tmf_work_lock);
1477 if (qedi_cmd->list_tmf_work) {
1478 list_del_init(&list_work->list);
1479 qedi_cmd->list_tmf_work = NULL;
1482 spin_unlock_bh(&qedi_conn->tmf_work_lock);
1484 spin_lock(&qedi_conn->list_lock);
1485 if (likely(cmd->io_cmd_in_list)) {
1486 cmd->io_cmd_in_list = false;
1487 list_del_init(&cmd->io_cmd);
1488 qedi_conn->active_cmd_count--;
1490 spin_unlock(&qedi_conn->list_lock);
1492 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
1495 static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn,
1496 struct iscsi_task *mtask)
1498 struct iscsi_tmf_request_hdr tmf_pdu_header;
1499 struct iscsi_task_params task_params;
1500 struct qedi_ctx *qedi = qedi_conn->qedi;
1501 struct iscsi_task_context *fw_task_ctx;
1502 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
1503 struct iscsi_task *ctask;
1504 struct iscsi_tm *tmf_hdr;
1505 struct qedi_cmd *qedi_cmd;
1506 struct qedi_cmd *cmd;
1507 struct qedi_endpoint *ep;
1513 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
1514 qedi_cmd = (struct qedi_cmd *)mtask->dd_data;
1519 tid = qedi_get_task_idx(qedi);
1524 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, tid);
1525 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context));
1527 qedi_cmd->task_id = tid;
1529 memset(&task_params, 0, sizeof(task_params));
1530 memset(&tmf_pdu_header, 0, sizeof(tmf_pdu_header));
1532 /* Update header info */
1533 qedi_update_itt_map(qedi, tid, mtask->itt, qedi_cmd);
1534 tmf_pdu_header.itt = qedi_set_itt(tid, get_itt(mtask->itt));
1535 tmf_pdu_header.cmd_sn = be32_to_cpu(tmf_hdr->cmdsn);
1537 memcpy(scsi_lun, &tmf_hdr->lun, sizeof(struct scsi_lun));
1538 tmf_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]);
1539 tmf_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]);
1541 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1542 ISCSI_TM_FUNC_ABORT_TASK) {
1543 ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt);
1544 if (!ctask || !ctask->sc) {
1545 QEDI_ERR(&qedi->dbg_ctx,
1546 "Could not get reference task\n");
1549 cmd = (struct qedi_cmd *)ctask->dd_data;
1550 tmf_pdu_header.rtt =
1551 qedi_set_itt(cmd->task_id,
1552 get_itt(tmf_hdr->rtt));
1554 tmf_pdu_header.rtt = ISCSI_RESERVED_TAG;
1557 tmf_pdu_header.opcode = tmf_hdr->opcode;
1558 tmf_pdu_header.function = tmf_hdr->flags;
1559 tmf_pdu_header.hdr_second_dword = ntoh24(tmf_hdr->dlength);
1560 tmf_pdu_header.ref_cmd_sn = be32_to_cpu(tmf_hdr->refcmdsn);
1562 /* Fill fw input params */
1563 task_params.context = fw_task_ctx;
1564 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1565 task_params.itid = tid;
1566 task_params.cq_rss_number = 0;
1567 task_params.tx_io_size = 0;
1568 task_params.rx_io_size = 0;
1570 sq_idx = qedi_get_wqe_idx(qedi_conn);
1571 task_params.sqe = &ep->sq[sq_idx];
1573 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1574 rval = init_initiator_tmf_request_task(&task_params,
1579 spin_lock(&qedi_conn->list_lock);
1580 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1581 qedi_cmd->io_cmd_in_list = true;
1582 qedi_conn->active_cmd_count++;
1583 spin_unlock(&qedi_conn->list_lock);
1585 qedi_ring_doorbell(qedi_conn);
1589 int qedi_iscsi_abort_work(struct qedi_conn *qedi_conn,
1590 struct iscsi_task *mtask)
1592 struct qedi_ctx *qedi = qedi_conn->qedi;
1593 struct iscsi_tm *tmf_hdr;
1594 struct qedi_cmd *qedi_cmd = (struct qedi_cmd *)mtask->dd_data;
1597 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
1598 qedi_cmd->task = mtask;
1600 /* If abort task then schedule the work and return */
1601 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1602 ISCSI_TM_FUNC_ABORT_TASK) {
1603 qedi_cmd->state = CLEANUP_WAIT;
1604 INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_work);
1605 queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work);
1607 } else if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1608 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) ||
1609 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1610 ISCSI_TM_FUNC_TARGET_WARM_RESET) ||
1611 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1612 ISCSI_TM_FUNC_TARGET_COLD_RESET)) {
1613 tid = qedi_get_task_idx(qedi);
1615 QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n",
1616 qedi_conn->iscsi_conn_id);
1619 qedi_cmd->task_id = tid;
1621 qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task);
1624 QEDI_ERR(&qedi->dbg_ctx, "Invalid tmf, cid=0x%x\n",
1625 qedi_conn->iscsi_conn_id);
1632 int qedi_send_iscsi_text(struct qedi_conn *qedi_conn,
1633 struct iscsi_task *task)
1635 struct iscsi_text_request_hdr text_request_pdu_header;
1636 struct scsi_sgl_task_params tx_sgl_task_params;
1637 struct scsi_sgl_task_params rx_sgl_task_params;
1638 struct iscsi_task_params task_params;
1639 struct iscsi_task_context *fw_task_ctx;
1640 struct qedi_ctx *qedi = qedi_conn->qedi;
1641 struct iscsi_text *text_hdr;
1642 struct scsi_sge *req_sge = NULL;
1643 struct scsi_sge *resp_sge = NULL;
1644 struct qedi_cmd *qedi_cmd;
1645 struct qedi_endpoint *ep;
1650 req_sge = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1651 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1652 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1653 text_hdr = (struct iscsi_text *)task->hdr;
1656 tid = qedi_get_task_idx(qedi);
1661 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, tid);
1662 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context));
1664 qedi_cmd->task_id = tid;
1666 memset(&task_params, 0, sizeof(task_params));
1667 memset(&text_request_pdu_header, 0, sizeof(text_request_pdu_header));
1668 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1669 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1671 /* Update header info */
1672 text_request_pdu_header.opcode = text_hdr->opcode;
1673 text_request_pdu_header.flags_attr = text_hdr->flags;
1675 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1676 text_request_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1677 text_request_pdu_header.ttt = text_hdr->ttt;
1678 text_request_pdu_header.cmd_sn = be32_to_cpu(text_hdr->cmdsn);
1679 text_request_pdu_header.exp_stat_sn = be32_to_cpu(text_hdr->exp_statsn);
1680 text_request_pdu_header.hdr_second_dword = ntoh24(text_hdr->dlength);
1682 /* Fill tx AHS and rx buffer */
1683 tx_sgl_task_params.sgl =
1684 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1685 tx_sgl_task_params.sgl_phys_addr.lo =
1686 (u32)(qedi_conn->gen_pdu.req_dma_addr);
1687 tx_sgl_task_params.sgl_phys_addr.hi =
1688 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
1689 tx_sgl_task_params.total_buffer_size = req_sge->sge_len;
1690 tx_sgl_task_params.num_sges = 1;
1692 rx_sgl_task_params.sgl =
1693 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1694 rx_sgl_task_params.sgl_phys_addr.lo =
1695 (u32)(qedi_conn->gen_pdu.resp_dma_addr);
1696 rx_sgl_task_params.sgl_phys_addr.hi =
1697 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
1698 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len;
1699 rx_sgl_task_params.num_sges = 1;
1701 /* Fill fw input params */
1702 task_params.context = fw_task_ctx;
1703 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1704 task_params.itid = tid;
1705 task_params.cq_rss_number = 0;
1706 task_params.tx_io_size = ntoh24(text_hdr->dlength);
1707 task_params.rx_io_size = resp_sge->sge_len;
1709 sq_idx = qedi_get_wqe_idx(qedi_conn);
1710 task_params.sqe = &ep->sq[sq_idx];
1712 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1713 rval = init_initiator_text_request_task(&task_params,
1714 &text_request_pdu_header,
1715 &tx_sgl_task_params,
1716 &rx_sgl_task_params);
1720 spin_lock(&qedi_conn->list_lock);
1721 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1722 qedi_cmd->io_cmd_in_list = true;
1723 qedi_conn->active_cmd_count++;
1724 spin_unlock(&qedi_conn->list_lock);
1726 qedi_ring_doorbell(qedi_conn);
1730 int qedi_send_iscsi_nopout(struct qedi_conn *qedi_conn,
1731 struct iscsi_task *task,
1732 char *datap, int data_len, int unsol)
1734 struct iscsi_nop_out_hdr nop_out_pdu_header;
1735 struct scsi_sgl_task_params tx_sgl_task_params;
1736 struct scsi_sgl_task_params rx_sgl_task_params;
1737 struct iscsi_task_params task_params;
1738 struct qedi_ctx *qedi = qedi_conn->qedi;
1739 struct iscsi_task_context *fw_task_ctx;
1740 struct iscsi_nopout *nopout_hdr;
1741 struct scsi_sge *req_sge = NULL;
1742 struct scsi_sge *resp_sge = NULL;
1743 struct qedi_cmd *qedi_cmd;
1744 struct qedi_endpoint *ep;
1750 req_sge = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1751 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1752 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1753 nopout_hdr = (struct iscsi_nopout *)task->hdr;
1756 tid = qedi_get_task_idx(qedi);
1761 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, tid);
1762 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context));
1764 qedi_cmd->task_id = tid;
1766 memset(&task_params, 0, sizeof(task_params));
1767 memset(&nop_out_pdu_header, 0, sizeof(nop_out_pdu_header));
1768 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1769 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1771 /* Update header info */
1772 nop_out_pdu_header.opcode = nopout_hdr->opcode;
1773 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_CONST1, 1);
1774 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_RSRV, 0);
1776 memcpy(scsi_lun, &nopout_hdr->lun, sizeof(struct scsi_lun));
1777 nop_out_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]);
1778 nop_out_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]);
1779 nop_out_pdu_header.cmd_sn = be32_to_cpu(nopout_hdr->cmdsn);
1780 nop_out_pdu_header.exp_stat_sn = be32_to_cpu(nopout_hdr->exp_statsn);
1782 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1784 if (nopout_hdr->ttt != ISCSI_TTT_ALL_ONES) {
1785 nop_out_pdu_header.itt = be32_to_cpu(nopout_hdr->itt);
1786 nop_out_pdu_header.ttt = be32_to_cpu(nopout_hdr->ttt);
1788 nop_out_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1789 nop_out_pdu_header.ttt = ISCSI_TTT_ALL_ONES;
1791 spin_lock(&qedi_conn->list_lock);
1792 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1793 qedi_cmd->io_cmd_in_list = true;
1794 qedi_conn->active_cmd_count++;
1795 spin_unlock(&qedi_conn->list_lock);
1798 /* Fill tx AHS and rx buffer */
1800 tx_sgl_task_params.sgl =
1801 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1802 tx_sgl_task_params.sgl_phys_addr.lo =
1803 (u32)(qedi_conn->gen_pdu.req_dma_addr);
1804 tx_sgl_task_params.sgl_phys_addr.hi =
1805 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
1806 tx_sgl_task_params.total_buffer_size = data_len;
1807 tx_sgl_task_params.num_sges = 1;
1809 rx_sgl_task_params.sgl =
1810 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1811 rx_sgl_task_params.sgl_phys_addr.lo =
1812 (u32)(qedi_conn->gen_pdu.resp_dma_addr);
1813 rx_sgl_task_params.sgl_phys_addr.hi =
1814 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
1815 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len;
1816 rx_sgl_task_params.num_sges = 1;
1819 /* Fill fw input params */
1820 task_params.context = fw_task_ctx;
1821 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1822 task_params.itid = tid;
1823 task_params.cq_rss_number = 0;
1824 task_params.tx_io_size = data_len;
1825 task_params.rx_io_size = resp_sge->sge_len;
1827 sq_idx = qedi_get_wqe_idx(qedi_conn);
1828 task_params.sqe = &ep->sq[sq_idx];
1830 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1831 rval = init_initiator_nop_out_task(&task_params,
1832 &nop_out_pdu_header,
1833 &tx_sgl_task_params,
1834 &rx_sgl_task_params);
1838 qedi_ring_doorbell(qedi_conn);
1842 static int qedi_split_bd(struct qedi_cmd *cmd, u64 addr, int sg_len,
1845 struct scsi_sge *bd = cmd->io_tbl.sge_tbl;
1846 int frag_size, sg_frags;
1851 if (addr % QEDI_PAGE_SIZE)
1853 (QEDI_PAGE_SIZE - (addr % QEDI_PAGE_SIZE));
1855 frag_size = (sg_len > QEDI_BD_SPLIT_SZ) ? 0 :
1856 (sg_len % QEDI_BD_SPLIT_SZ);
1859 frag_size = QEDI_BD_SPLIT_SZ;
1861 bd[bd_index + sg_frags].sge_addr.lo = (addr & 0xffffffff);
1862 bd[bd_index + sg_frags].sge_addr.hi = (addr >> 32);
1863 bd[bd_index + sg_frags].sge_len = (u16)frag_size;
1864 QEDI_INFO(&cmd->conn->qedi->dbg_ctx, QEDI_LOG_IO,
1865 "split sge %d: addr=%llx, len=%x",
1866 (bd_index + sg_frags), addr, frag_size);
1868 addr += (u64)frag_size;
1870 sg_len -= frag_size;
1875 static int qedi_map_scsi_sg(struct qedi_ctx *qedi, struct qedi_cmd *cmd)
1877 struct scsi_cmnd *sc = cmd->scsi_cmd;
1878 struct scsi_sge *bd = cmd->io_tbl.sge_tbl;
1879 struct scatterlist *sg;
1888 WARN_ON(scsi_sg_count(sc) > QEDI_ISCSI_MAX_BDS_PER_CMD);
1890 sg_count = dma_map_sg(&qedi->pdev->dev, scsi_sglist(sc),
1891 scsi_sg_count(sc), sc->sc_data_direction);
1894 * New condition to send single SGE as cached-SGL.
1895 * Single SGE with length less than 64K.
1897 sg = scsi_sglist(sc);
1898 if ((sg_count == 1) && (sg_dma_len(sg) <= MAX_SGLEN_FOR_CACHESGL)) {
1899 sg_len = sg_dma_len(sg);
1900 addr = (u64)sg_dma_address(sg);
1902 bd[bd_count].sge_addr.lo = (addr & 0xffffffff);
1903 bd[bd_count].sge_addr.hi = (addr >> 32);
1904 bd[bd_count].sge_len = (u16)sg_len;
1906 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1907 "single-cashed-sgl: bd_count:%d addr=%llx, len=%x",
1908 sg_count, addr, sg_len);
1913 scsi_for_each_sg(sc, sg, sg_count, i) {
1914 sg_len = sg_dma_len(sg);
1915 addr = (u64)sg_dma_address(sg);
1916 end_addr = (addr + sg_len);
1919 * first sg elem in the 'list',
1920 * check if end addr is page-aligned.
1922 if ((i == 0) && (sg_count > 1) && (end_addr % QEDI_PAGE_SIZE))
1923 cmd->use_slowpath = true;
1926 * last sg elem in the 'list',
1927 * check if start addr is page-aligned.
1929 else if ((i == (sg_count - 1)) &&
1930 (sg_count > 1) && (addr % QEDI_PAGE_SIZE))
1931 cmd->use_slowpath = true;
1934 * middle sg elements in list,
1935 * check if start and end addr is page-aligned
1937 else if ((i != 0) && (i != (sg_count - 1)) &&
1938 ((addr % QEDI_PAGE_SIZE) ||
1939 (end_addr % QEDI_PAGE_SIZE)))
1940 cmd->use_slowpath = true;
1942 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "sg[%d] size=0x%x",
1945 if (sg_len > QEDI_BD_SPLIT_SZ) {
1946 sg_frags = qedi_split_bd(cmd, addr, sg_len, bd_count);
1949 bd[bd_count].sge_addr.lo = addr & 0xffffffff;
1950 bd[bd_count].sge_addr.hi = addr >> 32;
1951 bd[bd_count].sge_len = sg_len;
1953 byte_count += sg_len;
1954 bd_count += sg_frags;
1957 if (byte_count != scsi_bufflen(sc))
1958 QEDI_ERR(&qedi->dbg_ctx,
1959 "byte_count = %d != scsi_bufflen = %d\n", byte_count,
1962 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "byte_count = %d\n",
1965 WARN_ON(byte_count != scsi_bufflen(sc));
1970 static void qedi_iscsi_map_sg_list(struct qedi_cmd *cmd)
1973 struct scsi_cmnd *sc = cmd->scsi_cmd;
1975 if (scsi_sg_count(sc)) {
1976 bd_count = qedi_map_scsi_sg(cmd->conn->qedi, cmd);
1980 struct scsi_sge *bd = cmd->io_tbl.sge_tbl;
1982 bd[0].sge_addr.lo = 0;
1983 bd[0].sge_addr.hi = 0;
1987 cmd->io_tbl.sge_valid = bd_count;
1990 static void qedi_cpy_scsi_cdb(struct scsi_cmnd *sc, u32 *dstp)
1996 lpcnt = sc->cmd_len / sizeof(dword);
1997 srcp = (u8 *)sc->cmnd;
1999 memcpy(&dword, (const void *)srcp, 4);
2000 *dstp = cpu_to_be32(dword);
2004 if (sc->cmd_len & 0x3) {
2005 dword = (u32)srcp[0] | ((u32)srcp[1] << 8);
2006 *dstp = cpu_to_be32(dword);
2010 void qedi_trace_io(struct qedi_ctx *qedi, struct iscsi_task *task,
2011 u16 tid, int8_t direction)
2013 struct qedi_io_log *io_log;
2014 struct iscsi_conn *conn = task->conn;
2015 struct qedi_conn *qedi_conn = conn->dd_data;
2016 struct scsi_cmnd *sc_cmd = task->sc;
2017 unsigned long flags;
2020 spin_lock_irqsave(&qedi->io_trace_lock, flags);
2022 io_log = &qedi->io_trace_buf[qedi->io_trace_idx];
2023 io_log->direction = direction;
2024 io_log->task_id = tid;
2025 io_log->cid = qedi_conn->iscsi_conn_id;
2026 io_log->lun = sc_cmd->device->lun;
2027 io_log->op = sc_cmd->cmnd[0];
2028 op = sc_cmd->cmnd[0];
2029 io_log->lba[0] = sc_cmd->cmnd[2];
2030 io_log->lba[1] = sc_cmd->cmnd[3];
2031 io_log->lba[2] = sc_cmd->cmnd[4];
2032 io_log->lba[3] = sc_cmd->cmnd[5];
2033 io_log->bufflen = scsi_bufflen(sc_cmd);
2034 io_log->sg_count = scsi_sg_count(sc_cmd);
2035 io_log->fast_sgs = qedi->fast_sgls;
2036 io_log->cached_sgs = qedi->cached_sgls;
2037 io_log->slow_sgs = qedi->slow_sgls;
2038 io_log->cached_sge = qedi->use_cached_sge;
2039 io_log->slow_sge = qedi->use_slow_sge;
2040 io_log->fast_sge = qedi->use_fast_sge;
2041 io_log->result = sc_cmd->result;
2042 io_log->jiffies = jiffies;
2043 io_log->blk_req_cpu = smp_processor_id();
2045 if (direction == QEDI_IO_TRACE_REQ) {
2046 /* For requests we only care about the submission CPU */
2047 io_log->req_cpu = smp_processor_id() % qedi->num_queues;
2048 io_log->intr_cpu = 0;
2049 io_log->blk_rsp_cpu = 0;
2050 } else if (direction == QEDI_IO_TRACE_RSP) {
2051 io_log->req_cpu = smp_processor_id() % qedi->num_queues;
2052 io_log->intr_cpu = qedi->intr_cpu;
2053 io_log->blk_rsp_cpu = smp_processor_id();
2056 qedi->io_trace_idx++;
2057 if (qedi->io_trace_idx == QEDI_IO_TRACE_SIZE)
2058 qedi->io_trace_idx = 0;
2060 qedi->use_cached_sge = false;
2061 qedi->use_slow_sge = false;
2062 qedi->use_fast_sge = false;
2064 spin_unlock_irqrestore(&qedi->io_trace_lock, flags);
2067 int qedi_iscsi_send_ioreq(struct iscsi_task *task)
2069 struct iscsi_conn *conn = task->conn;
2070 struct iscsi_session *session = conn->session;
2071 struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session);
2072 struct qedi_ctx *qedi = iscsi_host_priv(shost);
2073 struct qedi_conn *qedi_conn = conn->dd_data;
2074 struct qedi_cmd *cmd = task->dd_data;
2075 struct scsi_cmnd *sc = task->sc;
2076 struct iscsi_cmd_hdr cmd_pdu_header;
2077 struct scsi_sgl_task_params tx_sgl_task_params;
2078 struct scsi_sgl_task_params rx_sgl_task_params;
2079 struct scsi_sgl_task_params *prx_sgl = NULL;
2080 struct scsi_sgl_task_params *ptx_sgl = NULL;
2081 struct iscsi_task_params task_params;
2082 struct iscsi_conn_params conn_params;
2083 struct scsi_initiator_cmd_params cmd_params;
2084 struct iscsi_task_context *fw_task_ctx;
2085 struct iscsi_cls_conn *cls_conn;
2086 struct iscsi_scsi_req *hdr = (struct iscsi_scsi_req *)task->hdr;
2087 enum iscsi_task_type task_type = MAX_ISCSI_TASK_TYPE;
2088 struct qedi_endpoint *ep;
2096 cls_conn = qedi_conn->cls_conn;
2097 conn = cls_conn->dd_data;
2099 qedi_iscsi_map_sg_list(cmd);
2100 int_to_scsilun(sc->device->lun, (struct scsi_lun *)scsi_lun);
2102 tid = qedi_get_task_idx(qedi);
2107 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, tid);
2108 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context));
2112 memset(&task_params, 0, sizeof(task_params));
2113 memset(&cmd_pdu_header, 0, sizeof(cmd_pdu_header));
2114 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
2115 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
2116 memset(&conn_params, 0, sizeof(conn_params));
2117 memset(&cmd_params, 0, sizeof(cmd_params));
2119 cq_idx = smp_processor_id() % qedi->num_queues;
2120 /* Update header info */
2121 SET_FIELD(cmd_pdu_header.flags_attr, ISCSI_CMD_HDR_ATTR,
2123 if (hdr->cdb[0] != TEST_UNIT_READY) {
2124 if (sc->sc_data_direction == DMA_TO_DEVICE) {
2125 SET_FIELD(cmd_pdu_header.flags_attr,
2126 ISCSI_CMD_HDR_WRITE, 1);
2127 task_type = ISCSI_TASK_TYPE_INITIATOR_WRITE;
2129 SET_FIELD(cmd_pdu_header.flags_attr,
2130 ISCSI_CMD_HDR_READ, 1);
2131 task_type = ISCSI_TASK_TYPE_INITIATOR_READ;
2135 cmd_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]);
2136 cmd_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]);
2138 qedi_update_itt_map(qedi, tid, task->itt, cmd);
2139 cmd_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
2140 cmd_pdu_header.expected_transfer_length = cpu_to_be32(hdr->data_length);
2141 cmd_pdu_header.hdr_second_dword = ntoh24(hdr->dlength);
2142 cmd_pdu_header.cmd_sn = be32_to_cpu(hdr->cmdsn);
2143 cmd_pdu_header.hdr_first_byte = hdr->opcode;
2144 qedi_cpy_scsi_cdb(sc, (u32 *)cmd_pdu_header.cdb);
2146 /* Fill tx AHS and rx buffer */
2147 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) {
2148 tx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl;
2149 tx_sgl_task_params.sgl_phys_addr.lo =
2150 (u32)(cmd->io_tbl.sge_tbl_dma);
2151 tx_sgl_task_params.sgl_phys_addr.hi =
2152 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32);
2153 tx_sgl_task_params.total_buffer_size = scsi_bufflen(sc);
2154 tx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid;
2155 if (cmd->use_slowpath)
2156 tx_sgl_task_params.small_mid_sge = true;
2157 } else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) {
2158 rx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl;
2159 rx_sgl_task_params.sgl_phys_addr.lo =
2160 (u32)(cmd->io_tbl.sge_tbl_dma);
2161 rx_sgl_task_params.sgl_phys_addr.hi =
2162 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32);
2163 rx_sgl_task_params.total_buffer_size = scsi_bufflen(sc);
2164 rx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid;
2167 /* Add conn param */
2168 conn_params.first_burst_length = conn->session->first_burst;
2169 conn_params.max_send_pdu_length = conn->max_xmit_dlength;
2170 conn_params.max_burst_length = conn->session->max_burst;
2171 if (conn->session->initial_r2t_en)
2172 conn_params.initial_r2t = true;
2173 if (conn->session->imm_data_en)
2174 conn_params.immediate_data = true;
2176 /* Add cmd params */
2177 cmd_params.sense_data_buffer_phys_addr.lo = (u32)cmd->sense_buffer_dma;
2178 cmd_params.sense_data_buffer_phys_addr.hi =
2179 (u32)((u64)cmd->sense_buffer_dma >> 32);
2180 /* Fill fw input params */
2181 task_params.context = fw_task_ctx;
2182 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
2183 task_params.itid = tid;
2184 task_params.cq_rss_number = cq_idx;
2185 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE)
2186 task_params.tx_io_size = scsi_bufflen(sc);
2187 else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ)
2188 task_params.rx_io_size = scsi_bufflen(sc);
2190 sq_idx = qedi_get_wqe_idx(qedi_conn);
2191 task_params.sqe = &ep->sq[sq_idx];
2193 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
2194 "%s: %s-SGL: sg_len=0x%x num_sges=0x%x first-sge-lo=0x%x first-sge-hi=0x%x\n",
2195 (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) ?
2196 "Write " : "Read ", (cmd->io_tbl.sge_valid == 1) ?
2197 "Single" : (cmd->use_slowpath ? "SLOW" : "FAST"),
2198 (u16)cmd->io_tbl.sge_valid, scsi_bufflen(sc),
2199 (u32)(cmd->io_tbl.sge_tbl_dma),
2200 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32));
2202 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
2204 if (task_params.tx_io_size != 0)
2205 ptx_sgl = &tx_sgl_task_params;
2206 if (task_params.rx_io_size != 0)
2207 prx_sgl = &rx_sgl_task_params;
2209 rval = init_initiator_rw_iscsi_task(&task_params, &conn_params,
2210 &cmd_params, &cmd_pdu_header,
2216 spin_lock(&qedi_conn->list_lock);
2217 list_add_tail(&cmd->io_cmd, &qedi_conn->active_cmd_list);
2218 cmd->io_cmd_in_list = true;
2219 qedi_conn->active_cmd_count++;
2220 spin_unlock(&qedi_conn->list_lock);
2222 qedi_ring_doorbell(qedi_conn);
2226 int qedi_iscsi_cleanup_task(struct iscsi_task *task, bool mark_cmd_node_deleted)
2228 struct iscsi_task_params task_params;
2229 struct qedi_endpoint *ep;
2230 struct iscsi_conn *conn = task->conn;
2231 struct qedi_conn *qedi_conn = conn->dd_data;
2232 struct qedi_cmd *cmd = task->dd_data;
2236 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
2237 "issue cleanup tid=0x%x itt=0x%x task_state=%d cmd_state=0%x cid=0x%x\n",
2238 cmd->task_id, get_itt(task->itt), task->state,
2239 cmd->state, qedi_conn->iscsi_conn_id);
2241 memset(&task_params, 0, sizeof(task_params));
2244 sq_idx = qedi_get_wqe_idx(qedi_conn);
2246 task_params.sqe = &ep->sq[sq_idx];
2247 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
2248 task_params.itid = cmd->task_id;
2250 rval = init_cleanup_task(&task_params);
2254 qedi_ring_doorbell(qedi_conn);