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 if (likely(cmd->io_cmd_in_list)) {
66 cmd->io_cmd_in_list = false;
67 list_del_init(&cmd->io_cmd);
68 qedi_conn->active_cmd_count--;
70 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
71 "Active cmd list node already deleted, tid=0x%x, cid=0x%x, io_cmd_node=%p\n",
72 cmd->task_id, qedi_conn->iscsi_conn_id,
76 cmd->state = RESPONSE_RECEIVED;
77 qedi_clear_task_idx(qedi, cmd->task_id);
78 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0);
80 spin_unlock(&session->back_lock);
83 static void qedi_process_text_resp(struct qedi_ctx *qedi,
85 struct iscsi_task *task,
86 struct qedi_conn *qedi_conn)
88 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
89 struct iscsi_session *session = conn->session;
90 struct iscsi_task_context *task_ctx;
91 struct iscsi_text_rsp *resp_hdr_ptr;
92 struct iscsi_text_response_hdr *cqe_text_response;
96 cmd = (struct qedi_cmd *)task->dd_data;
97 task_ctx = qedi_get_task_mem(&qedi->tasks, cmd->task_id);
99 cqe_text_response = &cqe->cqe_common.iscsi_hdr.text_response;
100 spin_lock(&session->back_lock);
101 resp_hdr_ptr = (struct iscsi_text_rsp *)&qedi_conn->gen_pdu.resp_hdr;
102 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_hdr));
103 resp_hdr_ptr->opcode = cqe_text_response->opcode;
104 resp_hdr_ptr->flags = cqe_text_response->flags;
105 resp_hdr_ptr->hlength = 0;
107 hton24(resp_hdr_ptr->dlength,
108 (cqe_text_response->hdr_second_dword &
109 ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK));
111 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid,
113 resp_hdr_ptr->ttt = cqe_text_response->ttt;
114 resp_hdr_ptr->statsn = cpu_to_be32(cqe_text_response->stat_sn);
115 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_text_response->exp_cmd_sn);
116 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_text_response->max_cmd_sn);
118 pld_len = cqe_text_response->hdr_second_dword &
119 ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK;
120 qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len;
122 memset(task_ctx, '\0', sizeof(*task_ctx));
124 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
125 "Freeing tid=0x%x for cid=0x%x\n",
126 cmd->task_id, qedi_conn->iscsi_conn_id);
128 if (likely(cmd->io_cmd_in_list)) {
129 cmd->io_cmd_in_list = false;
130 list_del_init(&cmd->io_cmd);
131 qedi_conn->active_cmd_count--;
133 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
134 "Active cmd list node already deleted, tid=0x%x, cid=0x%x, io_cmd_node=%p\n",
135 cmd->task_id, qedi_conn->iscsi_conn_id,
139 cmd->state = RESPONSE_RECEIVED;
140 qedi_clear_task_idx(qedi, cmd->task_id);
142 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr,
143 qedi_conn->gen_pdu.resp_buf,
144 (qedi_conn->gen_pdu.resp_wr_ptr -
145 qedi_conn->gen_pdu.resp_buf));
146 spin_unlock(&session->back_lock);
149 static void qedi_tmf_resp_work(struct work_struct *work)
151 struct qedi_cmd *qedi_cmd =
152 container_of(work, struct qedi_cmd, tmf_work);
153 struct qedi_conn *qedi_conn = qedi_cmd->conn;
154 struct qedi_ctx *qedi = qedi_conn->qedi;
155 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
156 struct iscsi_session *session = conn->session;
157 struct iscsi_tm_rsp *resp_hdr_ptr;
158 struct iscsi_cls_session *cls_sess;
161 set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
162 resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf;
163 cls_sess = iscsi_conn_to_session(qedi_conn->cls_conn);
165 iscsi_block_session(session->cls_session);
166 rval = qedi_cleanup_all_io(qedi, qedi_conn, qedi_cmd->task, true);
168 qedi_clear_task_idx(qedi, qedi_cmd->task_id);
169 iscsi_unblock_session(session->cls_session);
173 iscsi_unblock_session(session->cls_session);
174 qedi_clear_task_idx(qedi, qedi_cmd->task_id);
176 spin_lock(&session->back_lock);
177 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0);
178 spin_unlock(&session->back_lock);
182 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
185 static void qedi_process_tmf_resp(struct qedi_ctx *qedi,
186 union iscsi_cqe *cqe,
187 struct iscsi_task *task,
188 struct qedi_conn *qedi_conn)
191 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
192 struct iscsi_session *session = conn->session;
193 struct iscsi_tmf_response_hdr *cqe_tmp_response;
194 struct iscsi_tm_rsp *resp_hdr_ptr;
195 struct iscsi_tm *tmf_hdr;
196 struct qedi_cmd *qedi_cmd = NULL;
198 cqe_tmp_response = &cqe->cqe_common.iscsi_hdr.tmf_response;
200 qedi_cmd = task->dd_data;
201 qedi_cmd->tmf_resp_buf = kzalloc(sizeof(*resp_hdr_ptr), GFP_ATOMIC);
202 if (!qedi_cmd->tmf_resp_buf) {
203 QEDI_ERR(&qedi->dbg_ctx,
204 "Failed to allocate resp buf, cid=0x%x\n",
205 qedi_conn->iscsi_conn_id);
209 spin_lock(&session->back_lock);
210 resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf;
211 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_tm_rsp));
213 /* Fill up the header */
214 resp_hdr_ptr->opcode = cqe_tmp_response->opcode;
215 resp_hdr_ptr->flags = cqe_tmp_response->hdr_flags;
216 resp_hdr_ptr->response = cqe_tmp_response->hdr_response;
217 resp_hdr_ptr->hlength = 0;
219 hton24(resp_hdr_ptr->dlength,
220 (cqe_tmp_response->hdr_second_dword &
221 ISCSI_TMF_RESPONSE_HDR_DATA_SEG_LEN_MASK));
222 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid,
224 resp_hdr_ptr->statsn = cpu_to_be32(cqe_tmp_response->stat_sn);
225 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_tmp_response->exp_cmd_sn);
226 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_tmp_response->max_cmd_sn);
228 tmf_hdr = (struct iscsi_tm *)qedi_cmd->task->hdr;
230 if (likely(qedi_cmd->io_cmd_in_list)) {
231 qedi_cmd->io_cmd_in_list = false;
232 list_del_init(&qedi_cmd->io_cmd);
233 qedi_conn->active_cmd_count--;
236 if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
237 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) ||
238 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
239 ISCSI_TM_FUNC_TARGET_WARM_RESET) ||
240 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
241 ISCSI_TM_FUNC_TARGET_COLD_RESET)) {
242 INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_resp_work);
243 queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work);
247 qedi_clear_task_idx(qedi, qedi_cmd->task_id);
249 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0);
253 spin_unlock(&session->back_lock);
256 static void qedi_process_login_resp(struct qedi_ctx *qedi,
257 union iscsi_cqe *cqe,
258 struct iscsi_task *task,
259 struct qedi_conn *qedi_conn)
261 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
262 struct iscsi_session *session = conn->session;
263 struct iscsi_task_context *task_ctx;
264 struct iscsi_login_rsp *resp_hdr_ptr;
265 struct iscsi_login_response_hdr *cqe_login_response;
266 struct qedi_cmd *cmd;
269 cmd = (struct qedi_cmd *)task->dd_data;
271 cqe_login_response = &cqe->cqe_common.iscsi_hdr.login_response;
272 task_ctx = qedi_get_task_mem(&qedi->tasks, cmd->task_id);
274 spin_lock(&session->back_lock);
275 resp_hdr_ptr = (struct iscsi_login_rsp *)&qedi_conn->gen_pdu.resp_hdr;
276 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_login_rsp));
277 resp_hdr_ptr->opcode = cqe_login_response->opcode;
278 resp_hdr_ptr->flags = cqe_login_response->flags_attr;
279 resp_hdr_ptr->hlength = 0;
281 hton24(resp_hdr_ptr->dlength,
282 (cqe_login_response->hdr_second_dword &
283 ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK));
284 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid,
286 resp_hdr_ptr->tsih = cqe_login_response->tsih;
287 resp_hdr_ptr->statsn = cpu_to_be32(cqe_login_response->stat_sn);
288 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_login_response->exp_cmd_sn);
289 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_login_response->max_cmd_sn);
290 resp_hdr_ptr->status_class = cqe_login_response->status_class;
291 resp_hdr_ptr->status_detail = cqe_login_response->status_detail;
292 pld_len = cqe_login_response->hdr_second_dword &
293 ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK;
294 qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len;
296 if (likely(cmd->io_cmd_in_list)) {
297 cmd->io_cmd_in_list = false;
298 list_del_init(&cmd->io_cmd);
299 qedi_conn->active_cmd_count--;
302 memset(task_ctx, '\0', sizeof(*task_ctx));
304 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr,
305 qedi_conn->gen_pdu.resp_buf,
306 (qedi_conn->gen_pdu.resp_wr_ptr -
307 qedi_conn->gen_pdu.resp_buf));
309 spin_unlock(&session->back_lock);
310 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
311 "Freeing tid=0x%x for cid=0x%x\n",
312 cmd->task_id, qedi_conn->iscsi_conn_id);
313 cmd->state = RESPONSE_RECEIVED;
314 qedi_clear_task_idx(qedi, cmd->task_id);
317 static void qedi_get_rq_bdq_buf(struct qedi_ctx *qedi,
318 struct iscsi_cqe_unsolicited *cqe,
323 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
324 "pld_len [%d], bdq_prod_idx [%d], idx [%d]\n",
325 len, qedi->bdq_prod_idx,
326 (qedi->bdq_prod_idx % qedi->rq_num_entries));
328 /* Obtain buffer address from rqe_opaque */
329 idx = cqe->rqe_opaque.lo;
330 if (idx > (QEDI_BDQ_NUM - 1)) {
331 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
332 "wrong idx %d returned by FW, dropping the unsolicited pkt\n",
337 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
338 "rqe_opaque.lo [0x%p], rqe_opaque.hi [0x%p], idx [%d]\n",
339 cqe->rqe_opaque.lo, cqe->rqe_opaque.hi, idx);
341 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
342 "unsol_cqe_type = %d\n", cqe->unsol_cqe_type);
343 switch (cqe->unsol_cqe_type) {
344 case ISCSI_CQE_UNSOLICITED_SINGLE:
345 case ISCSI_CQE_UNSOLICITED_FIRST:
347 memcpy(ptr, (void *)qedi->bdq[idx].buf_addr, len);
349 case ISCSI_CQE_UNSOLICITED_MIDDLE:
350 case ISCSI_CQE_UNSOLICITED_LAST:
357 static void qedi_put_rq_bdq_buf(struct qedi_ctx *qedi,
358 struct iscsi_cqe_unsolicited *cqe,
365 /* Obtain buffer address from rqe_opaque */
366 idx = cqe->rqe_opaque.lo;
367 if (idx > (QEDI_BDQ_NUM - 1)) {
368 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
369 "wrong idx %d returned by FW, dropping the unsolicited pkt\n",
374 pbl = (struct scsi_bd *)qedi->bdq_pbl;
375 pbl += (qedi->bdq_prod_idx % qedi->rq_num_entries);
376 pbl->address.hi = cpu_to_le32(QEDI_U64_HI(qedi->bdq[idx].buf_dma));
377 pbl->address.lo = cpu_to_le32(QEDI_U64_LO(qedi->bdq[idx].buf_dma));
378 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
379 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx] idx [%d]\n",
380 pbl, pbl->address.hi, pbl->address.lo, idx);
382 pbl->opaque.lo = cpu_to_le32(QEDI_U64_LO(idx));
384 /* Increment producer to let f/w know we've handled the frame */
385 qedi->bdq_prod_idx += count;
387 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);
388 tmp = readw(qedi->bdq_primary_prod);
390 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
391 tmp = readw(qedi->bdq_secondary_prod);
394 static void qedi_unsol_pdu_adjust_bdq(struct qedi_ctx *qedi,
395 struct iscsi_cqe_unsolicited *cqe,
396 u32 pdu_len, u32 num_bdqs,
399 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
400 "num_bdqs [%d]\n", num_bdqs);
402 qedi_get_rq_bdq_buf(qedi, cqe, bdq_data, pdu_len);
403 qedi_put_rq_bdq_buf(qedi, cqe, (num_bdqs + 1));
406 static int qedi_process_nopin_mesg(struct qedi_ctx *qedi,
407 union iscsi_cqe *cqe,
408 struct iscsi_task *task,
409 struct qedi_conn *qedi_conn, u16 que_idx)
411 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
412 struct iscsi_session *session = conn->session;
413 struct iscsi_nop_in_hdr *cqe_nop_in;
414 struct iscsi_nopin *hdr;
415 struct qedi_cmd *cmd;
416 int tgt_async_nop = 0;
418 u32 pdu_len, num_bdqs;
419 char bdq_data[QEDI_BDQ_BUF_SIZE];
422 spin_lock_bh(&session->back_lock);
423 cqe_nop_in = &cqe->cqe_common.iscsi_hdr.nop_in;
425 pdu_len = cqe_nop_in->hdr_second_dword &
426 ISCSI_NOP_IN_HDR_DATA_SEG_LEN_MASK;
427 num_bdqs = pdu_len / QEDI_BDQ_BUF_SIZE;
429 hdr = (struct iscsi_nopin *)&qedi_conn->gen_pdu.resp_hdr;
430 memset(hdr, 0, sizeof(struct iscsi_hdr));
431 hdr->opcode = cqe_nop_in->opcode;
432 hdr->max_cmdsn = cpu_to_be32(cqe_nop_in->max_cmd_sn);
433 hdr->exp_cmdsn = cpu_to_be32(cqe_nop_in->exp_cmd_sn);
434 hdr->statsn = cpu_to_be32(cqe_nop_in->stat_sn);
435 hdr->ttt = cpu_to_be32(cqe_nop_in->ttt);
437 if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) {
438 spin_lock_irqsave(&qedi->hba_lock, flags);
439 qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited,
440 pdu_len, num_bdqs, bdq_data);
441 hdr->itt = RESERVED_ITT;
443 spin_unlock_irqrestore(&qedi->hba_lock, flags);
447 /* Response to one of our nop-outs */
450 hdr->flags = ISCSI_FLAG_CMD_FINAL;
451 hdr->itt = build_itt(cqe->cqe_solicited.itid,
455 memcpy(&hdr->lun, lun, sizeof(struct scsi_lun));
456 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
457 "Freeing tid=0x%x for cid=0x%x\n",
458 cmd->task_id, qedi_conn->iscsi_conn_id);
459 cmd->state = RESPONSE_RECEIVED;
460 spin_lock(&qedi_conn->list_lock);
461 if (likely(cmd->io_cmd_in_list)) {
462 cmd->io_cmd_in_list = false;
463 list_del_init(&cmd->io_cmd);
464 qedi_conn->active_cmd_count--;
467 spin_unlock(&qedi_conn->list_lock);
468 qedi_clear_task_idx(qedi, cmd->task_id);
472 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, bdq_data, pdu_len);
474 spin_unlock_bh(&session->back_lock);
475 return tgt_async_nop;
478 static void qedi_process_async_mesg(struct qedi_ctx *qedi,
479 union iscsi_cqe *cqe,
480 struct iscsi_task *task,
481 struct qedi_conn *qedi_conn,
484 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
485 struct iscsi_session *session = conn->session;
486 struct iscsi_async_msg_hdr *cqe_async_msg;
487 struct iscsi_async *resp_hdr;
489 u32 pdu_len, num_bdqs;
490 char bdq_data[QEDI_BDQ_BUF_SIZE];
493 spin_lock_bh(&session->back_lock);
495 cqe_async_msg = &cqe->cqe_common.iscsi_hdr.async_msg;
496 pdu_len = cqe_async_msg->hdr_second_dword &
497 ISCSI_ASYNC_MSG_HDR_DATA_SEG_LEN_MASK;
498 num_bdqs = pdu_len / QEDI_BDQ_BUF_SIZE;
500 if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) {
501 spin_lock_irqsave(&qedi->hba_lock, flags);
502 qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited,
503 pdu_len, num_bdqs, bdq_data);
504 spin_unlock_irqrestore(&qedi->hba_lock, flags);
507 resp_hdr = (struct iscsi_async *)&qedi_conn->gen_pdu.resp_hdr;
508 memset(resp_hdr, 0, sizeof(struct iscsi_hdr));
509 resp_hdr->opcode = cqe_async_msg->opcode;
510 resp_hdr->flags = 0x80;
512 lun[0] = cpu_to_be32(cqe_async_msg->lun.lo);
513 lun[1] = cpu_to_be32(cqe_async_msg->lun.hi);
514 memcpy(&resp_hdr->lun, lun, sizeof(struct scsi_lun));
515 resp_hdr->exp_cmdsn = cpu_to_be32(cqe_async_msg->exp_cmd_sn);
516 resp_hdr->max_cmdsn = cpu_to_be32(cqe_async_msg->max_cmd_sn);
517 resp_hdr->statsn = cpu_to_be32(cqe_async_msg->stat_sn);
519 resp_hdr->async_event = cqe_async_msg->async_event;
520 resp_hdr->async_vcode = cqe_async_msg->async_vcode;
522 resp_hdr->param1 = cpu_to_be16(cqe_async_msg->param1_rsrv);
523 resp_hdr->param2 = cpu_to_be16(cqe_async_msg->param2_rsrv);
524 resp_hdr->param3 = cpu_to_be16(cqe_async_msg->param3_rsrv);
526 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, bdq_data,
529 spin_unlock_bh(&session->back_lock);
532 static void qedi_process_reject_mesg(struct qedi_ctx *qedi,
533 union iscsi_cqe *cqe,
534 struct iscsi_task *task,
535 struct qedi_conn *qedi_conn,
538 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
539 struct iscsi_session *session = conn->session;
540 struct iscsi_reject_hdr *cqe_reject;
541 struct iscsi_reject *hdr;
542 u32 pld_len, num_bdqs;
545 spin_lock_bh(&session->back_lock);
546 cqe_reject = &cqe->cqe_common.iscsi_hdr.reject;
547 pld_len = cqe_reject->hdr_second_dword &
548 ISCSI_REJECT_HDR_DATA_SEG_LEN_MASK;
549 num_bdqs = pld_len / QEDI_BDQ_BUF_SIZE;
551 if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) {
552 spin_lock_irqsave(&qedi->hba_lock, flags);
553 qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited,
554 pld_len, num_bdqs, conn->data);
555 spin_unlock_irqrestore(&qedi->hba_lock, flags);
557 hdr = (struct iscsi_reject *)&qedi_conn->gen_pdu.resp_hdr;
558 memset(hdr, 0, sizeof(struct iscsi_hdr));
559 hdr->opcode = cqe_reject->opcode;
560 hdr->reason = cqe_reject->hdr_reason;
561 hdr->flags = cqe_reject->hdr_flags;
562 hton24(hdr->dlength, (cqe_reject->hdr_second_dword &
563 ISCSI_REJECT_HDR_DATA_SEG_LEN_MASK));
564 hdr->max_cmdsn = cpu_to_be32(cqe_reject->max_cmd_sn);
565 hdr->exp_cmdsn = cpu_to_be32(cqe_reject->exp_cmd_sn);
566 hdr->statsn = cpu_to_be32(cqe_reject->stat_sn);
567 hdr->ffffffff = cpu_to_be32(0xffffffff);
569 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr,
570 conn->data, pld_len);
571 spin_unlock_bh(&session->back_lock);
574 static void qedi_scsi_completion(struct qedi_ctx *qedi,
575 union iscsi_cqe *cqe,
576 struct iscsi_task *task,
577 struct iscsi_conn *conn)
579 struct scsi_cmnd *sc_cmd;
580 struct qedi_cmd *cmd = task->dd_data;
581 struct iscsi_session *session = conn->session;
582 struct iscsi_scsi_rsp *hdr;
583 struct iscsi_data_in_hdr *cqe_data_in;
585 struct qedi_conn *qedi_conn;
589 iscsi_cid = cqe->cqe_common.conn_id;
590 qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
592 cqe_data_in = &cqe->cqe_common.iscsi_hdr.data_in;
594 cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits;
596 spin_lock_bh(&session->back_lock);
597 /* get the scsi command */
598 sc_cmd = cmd->scsi_cmd;
601 QEDI_WARN(&qedi->dbg_ctx, "sc_cmd is NULL!\n");
605 if (!sc_cmd->SCp.ptr) {
606 QEDI_WARN(&qedi->dbg_ctx,
607 "SCp.ptr is NULL, returned in another context.\n");
611 if (!sc_cmd->request) {
612 QEDI_WARN(&qedi->dbg_ctx,
613 "sc_cmd->request is NULL, sc_cmd=%p.\n",
618 if (!sc_cmd->request->special) {
619 QEDI_WARN(&qedi->dbg_ctx,
620 "request->special is NULL so request not valid, sc_cmd=%p.\n",
625 if (!sc_cmd->request->q) {
626 QEDI_WARN(&qedi->dbg_ctx,
627 "request->q is NULL so request is not valid, sc_cmd=%p.\n",
632 qedi_iscsi_unmap_sg_list(cmd);
634 hdr = (struct iscsi_scsi_rsp *)task->hdr;
635 hdr->opcode = cqe_data_in->opcode;
636 hdr->max_cmdsn = cpu_to_be32(cqe_data_in->max_cmd_sn);
637 hdr->exp_cmdsn = cpu_to_be32(cqe_data_in->exp_cmd_sn);
638 hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age);
639 hdr->response = cqe_data_in->reserved1;
640 hdr->cmd_status = cqe_data_in->status_rsvd;
641 hdr->flags = cqe_data_in->flags;
642 hdr->residual_count = cpu_to_be32(cqe_data_in->residual_count);
644 if (hdr->cmd_status == SAM_STAT_CHECK_CONDITION) {
645 datalen = cqe_data_in->reserved2 &
646 ISCSI_COMMON_HDR_DATA_SEG_LEN_MASK;
647 memcpy((char *)conn->data, (char *)cmd->sense_buffer, datalen);
650 /* If f/w reports data underrun err then set residual to IO transfer
651 * length, set Underrun flag and clear Overrun flag explicitly
653 if (unlikely(cqe_err_bits &&
654 GET_FIELD(cqe_err_bits, CQE_ERROR_BITMAP_UNDER_RUN_ERR))) {
655 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
656 "Under flow itt=0x%x proto flags=0x%x tid=0x%x cid 0x%x fw resid 0x%x sc dlen 0x%x\n",
657 hdr->itt, cqe_data_in->flags, cmd->task_id,
658 qedi_conn->iscsi_conn_id, hdr->residual_count,
659 scsi_bufflen(sc_cmd));
660 hdr->residual_count = cpu_to_be32(scsi_bufflen(sc_cmd));
661 hdr->flags |= ISCSI_FLAG_CMD_UNDERFLOW;
662 hdr->flags &= (~ISCSI_FLAG_CMD_OVERFLOW);
665 spin_lock(&qedi_conn->list_lock);
666 if (likely(cmd->io_cmd_in_list)) {
667 cmd->io_cmd_in_list = false;
668 list_del_init(&cmd->io_cmd);
669 qedi_conn->active_cmd_count--;
671 spin_unlock(&qedi_conn->list_lock);
673 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
674 "Freeing tid=0x%x for cid=0x%x\n",
675 cmd->task_id, qedi_conn->iscsi_conn_id);
676 cmd->state = RESPONSE_RECEIVED;
678 qedi_trace_io(qedi, task, cmd->task_id, QEDI_IO_TRACE_RSP);
680 qedi_clear_task_idx(qedi, cmd->task_id);
681 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr,
682 conn->data, datalen);
684 spin_unlock_bh(&session->back_lock);
687 static void qedi_mtask_completion(struct qedi_ctx *qedi,
688 union iscsi_cqe *cqe,
689 struct iscsi_task *task,
690 struct qedi_conn *conn, uint16_t que_idx)
692 struct iscsi_conn *iscsi_conn;
695 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte;
696 iscsi_conn = conn->cls_conn->dd_data;
698 switch (hdr_opcode) {
699 case ISCSI_OPCODE_SCSI_RESPONSE:
700 case ISCSI_OPCODE_DATA_IN:
701 qedi_scsi_completion(qedi, cqe, task, iscsi_conn);
703 case ISCSI_OPCODE_LOGIN_RESPONSE:
704 qedi_process_login_resp(qedi, cqe, task, conn);
706 case ISCSI_OPCODE_TMF_RESPONSE:
707 qedi_process_tmf_resp(qedi, cqe, task, conn);
709 case ISCSI_OPCODE_TEXT_RESPONSE:
710 qedi_process_text_resp(qedi, cqe, task, conn);
712 case ISCSI_OPCODE_LOGOUT_RESPONSE:
713 qedi_process_logout_resp(qedi, cqe, task, conn);
715 case ISCSI_OPCODE_NOP_IN:
716 qedi_process_nopin_mesg(qedi, cqe, task, conn, que_idx);
719 QEDI_ERR(&qedi->dbg_ctx, "unknown opcode\n");
723 static void qedi_process_nopin_local_cmpl(struct qedi_ctx *qedi,
724 struct iscsi_cqe_solicited *cqe,
725 struct iscsi_task *task,
726 struct qedi_conn *qedi_conn)
728 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
729 struct iscsi_session *session = conn->session;
730 struct qedi_cmd *cmd = task->dd_data;
732 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UNSOL,
733 "itid=0x%x, cmd task id=0x%x\n",
734 cqe->itid, cmd->task_id);
736 cmd->state = RESPONSE_RECEIVED;
737 qedi_clear_task_idx(qedi, cmd->task_id);
739 spin_lock_bh(&session->back_lock);
740 __iscsi_put_task(task);
741 spin_unlock_bh(&session->back_lock);
744 static void qedi_process_cmd_cleanup_resp(struct qedi_ctx *qedi,
745 struct iscsi_cqe_solicited *cqe,
746 struct iscsi_task *task,
747 struct iscsi_conn *conn)
749 struct qedi_work_map *work, *work_tmp;
750 u32 proto_itt = cqe->itid;
754 struct qedi_cmd *qedi_cmd = NULL;
757 struct qedi_conn *qedi_conn;
758 struct qedi_cmd *dbg_cmd;
759 struct iscsi_task *mtask;
760 struct iscsi_tm *tmf_hdr = NULL;
762 iscsi_cid = cqe->conn_id;
763 qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
765 /* Based on this itt get the corresponding qedi_cmd */
766 spin_lock_bh(&qedi_conn->tmf_work_lock);
767 list_for_each_entry_safe(work, work_tmp, &qedi_conn->tmf_work_list,
769 if (work->rtid == proto_itt) {
770 /* We found the command */
771 qedi_cmd = work->qedi_cmd;
772 if (!qedi_cmd->list_tmf_work) {
773 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
774 "TMF work not found, cqe->tid=0x%x, cid=0x%x\n",
775 proto_itt, qedi_conn->iscsi_conn_id);
779 mtask = qedi_cmd->task;
780 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
783 list_del_init(&work->list);
785 qedi_cmd->list_tmf_work = NULL;
788 spin_unlock_bh(&qedi_conn->tmf_work_lock);
791 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
792 "TMF work, cqe->tid=0x%x, tmf flags=0x%x, cid=0x%x\n",
793 proto_itt, tmf_hdr->flags, qedi_conn->iscsi_conn_id);
795 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
796 ISCSI_TM_FUNC_ABORT_TASK) {
797 spin_lock_bh(&conn->session->back_lock);
799 protoitt = build_itt(get_itt(tmf_hdr->rtt),
801 task = iscsi_itt_to_task(conn, protoitt);
803 spin_unlock_bh(&conn->session->back_lock);
806 QEDI_NOTICE(&qedi->dbg_ctx,
807 "IO task completed, tmf rtt=0x%x, cid=0x%x\n",
808 get_itt(tmf_hdr->rtt),
809 qedi_conn->iscsi_conn_id);
813 dbg_cmd = task->dd_data;
815 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
816 "Abort tmf rtt=0x%x, i/o itt=0x%x, i/o tid=0x%x, cid=0x%x\n",
817 get_itt(tmf_hdr->rtt), get_itt(task->itt),
818 dbg_cmd->task_id, qedi_conn->iscsi_conn_id);
820 if (qedi_cmd->state == CLEANUP_WAIT_FAILED)
821 qedi_cmd->state = CLEANUP_RECV;
823 qedi_clear_task_idx(qedi_conn->qedi, rtid);
825 spin_lock(&qedi_conn->list_lock);
826 list_del_init(&dbg_cmd->io_cmd);
827 qedi_conn->active_cmd_count--;
828 spin_unlock(&qedi_conn->list_lock);
829 qedi_cmd->state = CLEANUP_RECV;
830 wake_up_interruptible(&qedi_conn->wait_queue);
832 } else if (qedi_conn->cmd_cleanup_req > 0) {
833 spin_lock_bh(&conn->session->back_lock);
834 qedi_get_proto_itt(qedi, cqe->itid, &ptmp_itt);
835 protoitt = build_itt(ptmp_itt, conn->session->age);
836 task = iscsi_itt_to_task(conn, protoitt);
837 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
838 "cleanup io itid=0x%x, protoitt=0x%x, cmd_cleanup_cmpl=%d, cid=0x%x\n",
839 cqe->itid, protoitt, qedi_conn->cmd_cleanup_cmpl,
840 qedi_conn->iscsi_conn_id);
842 spin_unlock_bh(&conn->session->back_lock);
844 QEDI_NOTICE(&qedi->dbg_ctx,
845 "task is null, itid=0x%x, cid=0x%x\n",
846 cqe->itid, qedi_conn->iscsi_conn_id);
849 qedi_conn->cmd_cleanup_cmpl++;
850 wake_up(&qedi_conn->wait_queue);
852 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
853 "Freeing tid=0x%x for cid=0x%x\n",
854 cqe->itid, qedi_conn->iscsi_conn_id);
855 qedi_clear_task_idx(qedi_conn->qedi, cqe->itid);
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_ERR(&qedi->dbg_ctx,
862 "Delayed or untracked cleanup response, itt=0x%x, tid=0x%x, cid=0x%x, task=%p\n",
863 protoitt, cqe->itid, qedi_conn->iscsi_conn_id, task);
867 void qedi_fp_process_cqes(struct qedi_work *work)
869 struct qedi_ctx *qedi = work->qedi;
870 union iscsi_cqe *cqe = &work->cqe;
871 struct iscsi_task *task = NULL;
872 struct iscsi_nopout *nopout_hdr;
873 struct qedi_conn *q_conn;
874 struct iscsi_conn *conn;
875 struct qedi_cmd *qedi_cmd;
879 u16 que_idx = work->que_idx;
882 comp_type = cqe->cqe_common.cqe_type;
883 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte;
885 cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits;
887 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
888 "fw_cid=0x%x, cqe type=0x%x, opcode=0x%x\n",
889 cqe->cqe_common.conn_id, comp_type, hdr_opcode);
891 if (comp_type >= MAX_ISCSI_CQES_TYPE) {
892 QEDI_WARN(&qedi->dbg_ctx, "Invalid CqE type\n");
896 iscsi_cid = cqe->cqe_common.conn_id;
897 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
899 QEDI_WARN(&qedi->dbg_ctx,
900 "Session no longer exists for cid=0x%x!!\n",
905 conn = q_conn->cls_conn->dd_data;
907 if (unlikely(cqe_err_bits &&
908 GET_FIELD(cqe_err_bits,
909 CQE_ERROR_BITMAP_DATA_DIGEST_ERR))) {
910 iscsi_conn_failure(conn, ISCSI_ERR_DATA_DGST);
915 case ISCSI_CQE_TYPE_SOLICITED:
916 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
917 qedi_cmd = container_of(work, struct qedi_cmd, cqe_work);
918 task = qedi_cmd->task;
920 QEDI_WARN(&qedi->dbg_ctx, "task is NULL\n");
924 /* Process NOPIN local completion */
925 nopout_hdr = (struct iscsi_nopout *)task->hdr;
926 if ((nopout_hdr->itt == RESERVED_ITT) &&
927 (cqe->cqe_solicited.itid != (u16)RESERVED_ITT)) {
928 qedi_process_nopin_local_cmpl(qedi, &cqe->cqe_solicited,
931 cqe->cqe_solicited.itid =
932 qedi_get_itt(cqe->cqe_solicited);
933 /* Process other solicited responses */
934 qedi_mtask_completion(qedi, cqe, task, q_conn, que_idx);
937 case ISCSI_CQE_TYPE_UNSOLICITED:
938 switch (hdr_opcode) {
939 case ISCSI_OPCODE_NOP_IN:
940 qedi_process_nopin_mesg(qedi, cqe, task, q_conn,
943 case ISCSI_OPCODE_ASYNC_MSG:
944 qedi_process_async_mesg(qedi, cqe, task, q_conn,
947 case ISCSI_OPCODE_REJECT:
948 qedi_process_reject_mesg(qedi, cqe, task, q_conn,
952 goto exit_fp_process;
953 case ISCSI_CQE_TYPE_DUMMY:
954 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "Dummy CqE\n");
955 goto exit_fp_process;
956 case ISCSI_CQE_TYPE_TASK_CLEANUP:
957 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "CleanUp CqE\n");
958 qedi_process_cmd_cleanup_resp(qedi, &cqe->cqe_solicited, task,
960 goto exit_fp_process;
962 QEDI_ERR(&qedi->dbg_ctx, "Error cqe.\n");
970 static void qedi_ring_doorbell(struct qedi_conn *qedi_conn)
972 struct iscsi_db_data dbell = { 0 };
976 dbell.params |= DB_DEST_XCM << ISCSI_DB_DATA_DEST_SHIFT;
977 dbell.params |= DB_AGG_CMD_SET << ISCSI_DB_DATA_AGG_CMD_SHIFT;
979 DQ_XCM_ISCSI_SQ_PROD_CMD << ISCSI_DB_DATA_AGG_VAL_SEL_SHIFT;
981 dbell.sq_prod = qedi_conn->ep->fw_sq_prod_idx;
982 writel(*(u32 *)&dbell, qedi_conn->ep->p_doorbell);
984 /* Make sure fw write idx is coherent, and include both memory barriers
985 * as a failsafe as for some architectures the call is the same but on
986 * others they are two different assembly operations.
990 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_MP_REQ,
991 "prod_idx=0x%x, fw_prod_idx=0x%x, cid=0x%x\n",
992 qedi_conn->ep->sq_prod_idx, qedi_conn->ep->fw_sq_prod_idx,
993 qedi_conn->iscsi_conn_id);
996 static u16 qedi_get_wqe_idx(struct qedi_conn *qedi_conn)
998 struct qedi_endpoint *ep;
1002 rval = ep->sq_prod_idx;
1004 /* Increament SQ index */
1006 ep->fw_sq_prod_idx++;
1007 if (ep->sq_prod_idx == QEDI_SQ_SIZE)
1008 ep->sq_prod_idx = 0;
1013 int qedi_send_iscsi_login(struct qedi_conn *qedi_conn,
1014 struct iscsi_task *task)
1016 struct iscsi_login_req_hdr login_req_pdu_header;
1017 struct scsi_sgl_task_params tx_sgl_task_params;
1018 struct scsi_sgl_task_params rx_sgl_task_params;
1019 struct iscsi_task_params task_params;
1020 struct iscsi_task_context *fw_task_ctx;
1021 struct qedi_ctx *qedi = qedi_conn->qedi;
1022 struct iscsi_login_req *login_hdr;
1023 struct scsi_sge *resp_sge = NULL;
1024 struct qedi_cmd *qedi_cmd;
1025 struct qedi_endpoint *ep;
1030 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1031 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1033 login_hdr = (struct iscsi_login_req *)task->hdr;
1035 tid = qedi_get_task_idx(qedi);
1040 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, tid);
1041 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context));
1043 qedi_cmd->task_id = tid;
1045 memset(&task_params, 0, sizeof(task_params));
1046 memset(&login_req_pdu_header, 0, sizeof(login_req_pdu_header));
1047 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1048 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1049 /* Update header info */
1050 login_req_pdu_header.opcode = login_hdr->opcode;
1051 login_req_pdu_header.version_min = login_hdr->min_version;
1052 login_req_pdu_header.version_max = login_hdr->max_version;
1053 login_req_pdu_header.flags_attr = login_hdr->flags;
1054 login_req_pdu_header.isid_tabc = swab32p((u32 *)login_hdr->isid);
1055 login_req_pdu_header.isid_d = swab16p((u16 *)&login_hdr->isid[4]);
1057 login_req_pdu_header.tsih = login_hdr->tsih;
1058 login_req_pdu_header.hdr_second_dword = ntoh24(login_hdr->dlength);
1060 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1061 login_req_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1062 login_req_pdu_header.cid = qedi_conn->iscsi_conn_id;
1063 login_req_pdu_header.cmd_sn = be32_to_cpu(login_hdr->cmdsn);
1064 login_req_pdu_header.exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn);
1065 login_req_pdu_header.exp_stat_sn = 0;
1067 /* Fill tx AHS and rx buffer */
1068 tx_sgl_task_params.sgl =
1069 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1070 tx_sgl_task_params.sgl_phys_addr.lo =
1071 (u32)(qedi_conn->gen_pdu.req_dma_addr);
1072 tx_sgl_task_params.sgl_phys_addr.hi =
1073 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
1074 tx_sgl_task_params.total_buffer_size = ntoh24(login_hdr->dlength);
1075 tx_sgl_task_params.num_sges = 1;
1077 rx_sgl_task_params.sgl =
1078 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1079 rx_sgl_task_params.sgl_phys_addr.lo =
1080 (u32)(qedi_conn->gen_pdu.resp_dma_addr);
1081 rx_sgl_task_params.sgl_phys_addr.hi =
1082 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
1083 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len;
1084 rx_sgl_task_params.num_sges = 1;
1086 /* Fill fw input params */
1087 task_params.context = fw_task_ctx;
1088 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1089 task_params.itid = tid;
1090 task_params.cq_rss_number = 0;
1091 task_params.tx_io_size = ntoh24(login_hdr->dlength);
1092 task_params.rx_io_size = resp_sge->sge_len;
1094 sq_idx = qedi_get_wqe_idx(qedi_conn);
1095 task_params.sqe = &ep->sq[sq_idx];
1097 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1098 rval = init_initiator_login_request_task(&task_params,
1099 &login_req_pdu_header,
1100 &tx_sgl_task_params,
1101 &rx_sgl_task_params);
1105 spin_lock(&qedi_conn->list_lock);
1106 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1107 qedi_cmd->io_cmd_in_list = true;
1108 qedi_conn->active_cmd_count++;
1109 spin_unlock(&qedi_conn->list_lock);
1111 qedi_ring_doorbell(qedi_conn);
1115 int qedi_send_iscsi_logout(struct qedi_conn *qedi_conn,
1116 struct iscsi_task *task)
1118 struct iscsi_logout_req_hdr logout_pdu_header;
1119 struct scsi_sgl_task_params tx_sgl_task_params;
1120 struct scsi_sgl_task_params rx_sgl_task_params;
1121 struct iscsi_task_params task_params;
1122 struct iscsi_task_context *fw_task_ctx;
1123 struct iscsi_logout *logout_hdr = NULL;
1124 struct qedi_ctx *qedi = qedi_conn->qedi;
1125 struct qedi_cmd *qedi_cmd;
1126 struct qedi_endpoint *ep;
1131 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1132 logout_hdr = (struct iscsi_logout *)task->hdr;
1135 tid = qedi_get_task_idx(qedi);
1140 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, tid);
1141 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context));
1143 qedi_cmd->task_id = tid;
1145 memset(&task_params, 0, sizeof(task_params));
1146 memset(&logout_pdu_header, 0, sizeof(logout_pdu_header));
1147 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1148 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1150 /* Update header info */
1151 logout_pdu_header.opcode = logout_hdr->opcode;
1152 logout_pdu_header.reason_code = 0x80 | logout_hdr->flags;
1153 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1154 logout_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1155 logout_pdu_header.exp_stat_sn = be32_to_cpu(logout_hdr->exp_statsn);
1156 logout_pdu_header.cmd_sn = be32_to_cpu(logout_hdr->cmdsn);
1157 logout_pdu_header.cid = qedi_conn->iscsi_conn_id;
1159 /* Fill fw input params */
1160 task_params.context = fw_task_ctx;
1161 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1162 task_params.itid = tid;
1163 task_params.cq_rss_number = 0;
1164 task_params.tx_io_size = 0;
1165 task_params.rx_io_size = 0;
1167 sq_idx = qedi_get_wqe_idx(qedi_conn);
1168 task_params.sqe = &ep->sq[sq_idx];
1169 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1171 rval = init_initiator_logout_request_task(&task_params,
1177 spin_lock(&qedi_conn->list_lock);
1178 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1179 qedi_cmd->io_cmd_in_list = true;
1180 qedi_conn->active_cmd_count++;
1181 spin_unlock(&qedi_conn->list_lock);
1183 qedi_ring_doorbell(qedi_conn);
1187 int qedi_cleanup_all_io(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn,
1188 struct iscsi_task *task, bool in_recovery)
1191 struct iscsi_task *ctask;
1192 struct qedi_cmd *cmd, *cmd_tmp;
1193 struct iscsi_tm *tmf_hdr;
1194 unsigned int lun = 0;
1195 bool lun_reset = false;
1196 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
1197 struct iscsi_session *session = conn->session;
1199 /* From recovery, task is NULL or from tmf resp valid task */
1201 tmf_hdr = (struct iscsi_tm *)task->hdr;
1203 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1204 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) {
1206 lun = scsilun_to_int(&tmf_hdr->lun);
1210 qedi_conn->cmd_cleanup_req = 0;
1211 qedi_conn->cmd_cleanup_cmpl = 0;
1213 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1214 "active_cmd_count=%d, cid=0x%x, in_recovery=%d, lun_reset=%d\n",
1215 qedi_conn->active_cmd_count, qedi_conn->iscsi_conn_id,
1216 in_recovery, lun_reset);
1219 spin_lock_bh(&session->back_lock);
1221 spin_lock(&qedi_conn->list_lock);
1223 list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list,
1230 if (cmd->scsi_cmd && cmd->scsi_cmd->device) {
1231 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1232 "tid=0x%x itt=0x%x scsi_cmd_ptr=%p device=%p task_state=%d cmd_state=0%x cid=0x%x\n",
1233 cmd->task_id, get_itt(ctask->itt),
1234 cmd->scsi_cmd, cmd->scsi_cmd->device,
1235 ctask->state, cmd->state,
1236 qedi_conn->iscsi_conn_id);
1237 if (cmd->scsi_cmd->device->lun != lun)
1241 qedi_conn->cmd_cleanup_req++;
1242 qedi_iscsi_cleanup_task(ctask, true);
1244 list_del_init(&cmd->io_cmd);
1245 qedi_conn->active_cmd_count--;
1246 QEDI_WARN(&qedi->dbg_ctx,
1247 "Deleted active cmd list node io_cmd=%p, cid=0x%x\n",
1248 &cmd->io_cmd, qedi_conn->iscsi_conn_id);
1251 spin_unlock(&qedi_conn->list_lock);
1254 spin_unlock_bh(&session->back_lock);
1256 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1257 "cmd_cleanup_req=%d, cid=0x%x\n",
1258 qedi_conn->cmd_cleanup_req,
1259 qedi_conn->iscsi_conn_id);
1261 rval = wait_event_interruptible_timeout(qedi_conn->wait_queue,
1262 ((qedi_conn->cmd_cleanup_req ==
1263 qedi_conn->cmd_cleanup_cmpl) ||
1267 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1268 "i/o cmd_cleanup_req=%d, equal to cmd_cleanup_cmpl=%d, cid=0x%x\n",
1269 qedi_conn->cmd_cleanup_req,
1270 qedi_conn->cmd_cleanup_cmpl,
1271 qedi_conn->iscsi_conn_id);
1276 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1277 "i/o cmd_cleanup_req=%d, not equal to cmd_cleanup_cmpl=%d, cid=0x%x\n",
1278 qedi_conn->cmd_cleanup_req,
1279 qedi_conn->cmd_cleanup_cmpl,
1280 qedi_conn->iscsi_conn_id);
1282 iscsi_host_for_each_session(qedi->shost,
1283 qedi_mark_device_missing);
1284 qedi_ops->common->drain(qedi->cdev);
1286 /* Enable IOs for all other sessions except current.*/
1287 if (!wait_event_interruptible_timeout(qedi_conn->wait_queue,
1288 (qedi_conn->cmd_cleanup_req ==
1289 qedi_conn->cmd_cleanup_cmpl),
1291 iscsi_host_for_each_session(qedi->shost,
1292 qedi_mark_device_available);
1296 iscsi_host_for_each_session(qedi->shost,
1297 qedi_mark_device_available);
1302 void qedi_clearsq(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn,
1303 struct iscsi_task *task)
1305 struct qedi_endpoint *qedi_ep;
1308 qedi_ep = qedi_conn->ep;
1309 qedi_conn->cmd_cleanup_req = 0;
1310 qedi_conn->cmd_cleanup_cmpl = 0;
1313 QEDI_WARN(&qedi->dbg_ctx,
1314 "Cannot proceed, ep already disconnected, cid=0x%x\n",
1315 qedi_conn->iscsi_conn_id);
1319 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1320 "Clearing SQ for cid=0x%x, conn=%p, ep=%p\n",
1321 qedi_conn->iscsi_conn_id, qedi_conn, qedi_ep);
1323 qedi_ops->clear_sq(qedi->cdev, qedi_ep->handle);
1325 rval = qedi_cleanup_all_io(qedi, qedi_conn, task, true);
1327 QEDI_ERR(&qedi->dbg_ctx,
1328 "fatal error, need hard reset, cid=0x%x\n",
1329 qedi_conn->iscsi_conn_id);
1334 static int qedi_wait_for_cleanup_request(struct qedi_ctx *qedi,
1335 struct qedi_conn *qedi_conn,
1336 struct iscsi_task *task,
1337 struct qedi_cmd *qedi_cmd,
1338 struct qedi_work_map *list_work)
1340 struct qedi_cmd *cmd = (struct qedi_cmd *)task->dd_data;
1343 wait = wait_event_interruptible_timeout(qedi_conn->wait_queue,
1344 ((qedi_cmd->state ==
1346 ((qedi_cmd->type == TYPEIO) &&
1348 RESPONSE_RECEIVED))),
1351 qedi_cmd->state = CLEANUP_WAIT_FAILED;
1353 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1354 "Cleanup timedout tid=0x%x, issue connection recovery, cid=0x%x\n",
1355 cmd->task_id, qedi_conn->iscsi_conn_id);
1362 static void qedi_tmf_work(struct work_struct *work)
1364 struct qedi_cmd *qedi_cmd =
1365 container_of(work, struct qedi_cmd, tmf_work);
1366 struct qedi_conn *qedi_conn = qedi_cmd->conn;
1367 struct qedi_ctx *qedi = qedi_conn->qedi;
1368 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
1369 struct iscsi_cls_session *cls_sess;
1370 struct qedi_work_map *list_work = NULL;
1371 struct iscsi_task *mtask;
1372 struct qedi_cmd *cmd;
1373 struct iscsi_task *ctask;
1374 struct iscsi_tm *tmf_hdr;
1378 mtask = qedi_cmd->task;
1379 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
1380 cls_sess = iscsi_conn_to_session(qedi_conn->cls_conn);
1381 set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
1383 ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt);
1384 if (!ctask || !ctask->sc) {
1385 QEDI_ERR(&qedi->dbg_ctx, "Task already completed\n");
1389 cmd = (struct qedi_cmd *)ctask->dd_data;
1390 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1391 "Abort tmf rtt=0x%x, cmd itt=0x%x, cmd tid=0x%x, cid=0x%x\n",
1392 get_itt(tmf_hdr->rtt), get_itt(ctask->itt), cmd->task_id,
1393 qedi_conn->iscsi_conn_id);
1395 if (qedi_do_not_recover) {
1396 QEDI_ERR(&qedi->dbg_ctx, "DONT SEND CLEANUP/ABORT %d\n",
1397 qedi_do_not_recover);
1401 list_work = kzalloc(sizeof(*list_work), GFP_ATOMIC);
1403 QEDI_ERR(&qedi->dbg_ctx, "Memory allocation failed\n");
1407 qedi_cmd->type = TYPEIO;
1408 list_work->qedi_cmd = qedi_cmd;
1409 list_work->rtid = cmd->task_id;
1410 list_work->state = QEDI_WORK_SCHEDULED;
1411 qedi_cmd->list_tmf_work = list_work;
1413 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1414 "Queue tmf work=%p, list node=%p, cid=0x%x, tmf flags=0x%x\n",
1415 list_work->ptr_tmf_work, list_work, qedi_conn->iscsi_conn_id,
1418 spin_lock_bh(&qedi_conn->tmf_work_lock);
1419 list_add_tail(&list_work->list, &qedi_conn->tmf_work_list);
1420 spin_unlock_bh(&qedi_conn->tmf_work_lock);
1422 qedi_iscsi_cleanup_task(ctask, false);
1424 rval = qedi_wait_for_cleanup_request(qedi, qedi_conn, ctask, qedi_cmd,
1427 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1428 "FW cleanup got escalated, cid=0x%x\n",
1429 qedi_conn->iscsi_conn_id);
1433 tid = qedi_get_task_idx(qedi);
1435 QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n",
1436 qedi_conn->iscsi_conn_id);
1440 qedi_cmd->task_id = tid;
1441 qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task);
1444 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
1448 spin_lock_bh(&qedi_conn->tmf_work_lock);
1449 if (!qedi_cmd->list_tmf_work) {
1450 list_del_init(&list_work->list);
1451 qedi_cmd->list_tmf_work = NULL;
1454 spin_unlock_bh(&qedi_conn->tmf_work_lock);
1456 spin_lock(&qedi_conn->list_lock);
1457 list_del_init(&cmd->io_cmd);
1458 qedi_conn->active_cmd_count--;
1459 spin_unlock(&qedi_conn->list_lock);
1461 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
1464 static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn,
1465 struct iscsi_task *mtask)
1467 struct iscsi_tmf_request_hdr tmf_pdu_header;
1468 struct iscsi_task_params task_params;
1469 struct qedi_ctx *qedi = qedi_conn->qedi;
1470 struct iscsi_task_context *fw_task_ctx;
1471 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
1472 struct iscsi_task *ctask;
1473 struct iscsi_tm *tmf_hdr;
1474 struct qedi_cmd *qedi_cmd;
1475 struct qedi_cmd *cmd;
1476 struct qedi_endpoint *ep;
1482 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
1483 qedi_cmd = (struct qedi_cmd *)mtask->dd_data;
1488 tid = qedi_get_task_idx(qedi);
1493 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, tid);
1494 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context));
1496 qedi_cmd->task_id = tid;
1498 memset(&task_params, 0, sizeof(task_params));
1499 memset(&tmf_pdu_header, 0, sizeof(tmf_pdu_header));
1501 /* Update header info */
1502 qedi_update_itt_map(qedi, tid, mtask->itt, qedi_cmd);
1503 tmf_pdu_header.itt = qedi_set_itt(tid, get_itt(mtask->itt));
1504 tmf_pdu_header.cmd_sn = be32_to_cpu(tmf_hdr->cmdsn);
1506 memcpy(scsi_lun, &tmf_hdr->lun, sizeof(struct scsi_lun));
1507 tmf_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]);
1508 tmf_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]);
1510 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1511 ISCSI_TM_FUNC_ABORT_TASK) {
1512 ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt);
1513 if (!ctask || !ctask->sc) {
1514 QEDI_ERR(&qedi->dbg_ctx,
1515 "Could not get reference task\n");
1518 cmd = (struct qedi_cmd *)ctask->dd_data;
1519 tmf_pdu_header.rtt =
1520 qedi_set_itt(cmd->task_id,
1521 get_itt(tmf_hdr->rtt));
1523 tmf_pdu_header.rtt = ISCSI_RESERVED_TAG;
1526 tmf_pdu_header.opcode = tmf_hdr->opcode;
1527 tmf_pdu_header.function = tmf_hdr->flags;
1528 tmf_pdu_header.hdr_second_dword = ntoh24(tmf_hdr->dlength);
1529 tmf_pdu_header.ref_cmd_sn = be32_to_cpu(tmf_hdr->refcmdsn);
1531 /* Fill fw input params */
1532 task_params.context = fw_task_ctx;
1533 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1534 task_params.itid = tid;
1535 task_params.cq_rss_number = 0;
1536 task_params.tx_io_size = 0;
1537 task_params.rx_io_size = 0;
1539 sq_idx = qedi_get_wqe_idx(qedi_conn);
1540 task_params.sqe = &ep->sq[sq_idx];
1542 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1543 rval = init_initiator_tmf_request_task(&task_params,
1548 spin_lock(&qedi_conn->list_lock);
1549 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1550 qedi_cmd->io_cmd_in_list = true;
1551 qedi_conn->active_cmd_count++;
1552 spin_unlock(&qedi_conn->list_lock);
1554 qedi_ring_doorbell(qedi_conn);
1558 int qedi_iscsi_abort_work(struct qedi_conn *qedi_conn,
1559 struct iscsi_task *mtask)
1561 struct qedi_ctx *qedi = qedi_conn->qedi;
1562 struct iscsi_tm *tmf_hdr;
1563 struct qedi_cmd *qedi_cmd = (struct qedi_cmd *)mtask->dd_data;
1566 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
1567 qedi_cmd->task = mtask;
1569 /* If abort task then schedule the work and return */
1570 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1571 ISCSI_TM_FUNC_ABORT_TASK) {
1572 qedi_cmd->state = CLEANUP_WAIT;
1573 INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_work);
1574 queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work);
1576 } else if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1577 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) ||
1578 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1579 ISCSI_TM_FUNC_TARGET_WARM_RESET) ||
1580 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1581 ISCSI_TM_FUNC_TARGET_COLD_RESET)) {
1582 tid = qedi_get_task_idx(qedi);
1584 QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n",
1585 qedi_conn->iscsi_conn_id);
1588 qedi_cmd->task_id = tid;
1590 qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task);
1593 QEDI_ERR(&qedi->dbg_ctx, "Invalid tmf, cid=0x%x\n",
1594 qedi_conn->iscsi_conn_id);
1601 int qedi_send_iscsi_text(struct qedi_conn *qedi_conn,
1602 struct iscsi_task *task)
1604 struct iscsi_text_request_hdr text_request_pdu_header;
1605 struct scsi_sgl_task_params tx_sgl_task_params;
1606 struct scsi_sgl_task_params rx_sgl_task_params;
1607 struct iscsi_task_params task_params;
1608 struct iscsi_task_context *fw_task_ctx;
1609 struct qedi_ctx *qedi = qedi_conn->qedi;
1610 struct iscsi_text *text_hdr;
1611 struct scsi_sge *req_sge = NULL;
1612 struct scsi_sge *resp_sge = NULL;
1613 struct qedi_cmd *qedi_cmd;
1614 struct qedi_endpoint *ep;
1619 req_sge = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1620 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1621 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1622 text_hdr = (struct iscsi_text *)task->hdr;
1625 tid = qedi_get_task_idx(qedi);
1630 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, tid);
1631 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context));
1633 qedi_cmd->task_id = tid;
1635 memset(&task_params, 0, sizeof(task_params));
1636 memset(&text_request_pdu_header, 0, sizeof(text_request_pdu_header));
1637 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1638 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1640 /* Update header info */
1641 text_request_pdu_header.opcode = text_hdr->opcode;
1642 text_request_pdu_header.flags_attr = text_hdr->flags;
1644 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1645 text_request_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1646 text_request_pdu_header.ttt = text_hdr->ttt;
1647 text_request_pdu_header.cmd_sn = be32_to_cpu(text_hdr->cmdsn);
1648 text_request_pdu_header.exp_stat_sn = be32_to_cpu(text_hdr->exp_statsn);
1649 text_request_pdu_header.hdr_second_dword = ntoh24(text_hdr->dlength);
1651 /* Fill tx AHS and rx buffer */
1652 tx_sgl_task_params.sgl =
1653 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1654 tx_sgl_task_params.sgl_phys_addr.lo =
1655 (u32)(qedi_conn->gen_pdu.req_dma_addr);
1656 tx_sgl_task_params.sgl_phys_addr.hi =
1657 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
1658 tx_sgl_task_params.total_buffer_size = req_sge->sge_len;
1659 tx_sgl_task_params.num_sges = 1;
1661 rx_sgl_task_params.sgl =
1662 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1663 rx_sgl_task_params.sgl_phys_addr.lo =
1664 (u32)(qedi_conn->gen_pdu.resp_dma_addr);
1665 rx_sgl_task_params.sgl_phys_addr.hi =
1666 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
1667 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len;
1668 rx_sgl_task_params.num_sges = 1;
1670 /* Fill fw input params */
1671 task_params.context = fw_task_ctx;
1672 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1673 task_params.itid = tid;
1674 task_params.cq_rss_number = 0;
1675 task_params.tx_io_size = ntoh24(text_hdr->dlength);
1676 task_params.rx_io_size = resp_sge->sge_len;
1678 sq_idx = qedi_get_wqe_idx(qedi_conn);
1679 task_params.sqe = &ep->sq[sq_idx];
1681 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1682 rval = init_initiator_text_request_task(&task_params,
1683 &text_request_pdu_header,
1684 &tx_sgl_task_params,
1685 &rx_sgl_task_params);
1689 spin_lock(&qedi_conn->list_lock);
1690 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1691 qedi_cmd->io_cmd_in_list = true;
1692 qedi_conn->active_cmd_count++;
1693 spin_unlock(&qedi_conn->list_lock);
1695 qedi_ring_doorbell(qedi_conn);
1699 int qedi_send_iscsi_nopout(struct qedi_conn *qedi_conn,
1700 struct iscsi_task *task,
1701 char *datap, int data_len, int unsol)
1703 struct iscsi_nop_out_hdr nop_out_pdu_header;
1704 struct scsi_sgl_task_params tx_sgl_task_params;
1705 struct scsi_sgl_task_params rx_sgl_task_params;
1706 struct iscsi_task_params task_params;
1707 struct qedi_ctx *qedi = qedi_conn->qedi;
1708 struct iscsi_task_context *fw_task_ctx;
1709 struct iscsi_nopout *nopout_hdr;
1710 struct scsi_sge *resp_sge = NULL;
1711 struct qedi_cmd *qedi_cmd;
1712 struct qedi_endpoint *ep;
1718 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1719 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1720 nopout_hdr = (struct iscsi_nopout *)task->hdr;
1723 tid = qedi_get_task_idx(qedi);
1728 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, tid);
1729 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context));
1731 qedi_cmd->task_id = tid;
1733 memset(&task_params, 0, sizeof(task_params));
1734 memset(&nop_out_pdu_header, 0, sizeof(nop_out_pdu_header));
1735 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1736 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1738 /* Update header info */
1739 nop_out_pdu_header.opcode = nopout_hdr->opcode;
1740 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_CONST1, 1);
1741 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_RSRV, 0);
1743 memcpy(scsi_lun, &nopout_hdr->lun, sizeof(struct scsi_lun));
1744 nop_out_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]);
1745 nop_out_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]);
1746 nop_out_pdu_header.cmd_sn = be32_to_cpu(nopout_hdr->cmdsn);
1747 nop_out_pdu_header.exp_stat_sn = be32_to_cpu(nopout_hdr->exp_statsn);
1749 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1751 if (nopout_hdr->ttt != ISCSI_TTT_ALL_ONES) {
1752 nop_out_pdu_header.itt = be32_to_cpu(nopout_hdr->itt);
1753 nop_out_pdu_header.ttt = be32_to_cpu(nopout_hdr->ttt);
1755 nop_out_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1756 nop_out_pdu_header.ttt = ISCSI_TTT_ALL_ONES;
1758 spin_lock(&qedi_conn->list_lock);
1759 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1760 qedi_cmd->io_cmd_in_list = true;
1761 qedi_conn->active_cmd_count++;
1762 spin_unlock(&qedi_conn->list_lock);
1765 /* Fill tx AHS and rx buffer */
1767 tx_sgl_task_params.sgl =
1768 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1769 tx_sgl_task_params.sgl_phys_addr.lo =
1770 (u32)(qedi_conn->gen_pdu.req_dma_addr);
1771 tx_sgl_task_params.sgl_phys_addr.hi =
1772 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
1773 tx_sgl_task_params.total_buffer_size = data_len;
1774 tx_sgl_task_params.num_sges = 1;
1776 rx_sgl_task_params.sgl =
1777 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1778 rx_sgl_task_params.sgl_phys_addr.lo =
1779 (u32)(qedi_conn->gen_pdu.resp_dma_addr);
1780 rx_sgl_task_params.sgl_phys_addr.hi =
1781 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
1782 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len;
1783 rx_sgl_task_params.num_sges = 1;
1786 /* Fill fw input params */
1787 task_params.context = fw_task_ctx;
1788 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1789 task_params.itid = tid;
1790 task_params.cq_rss_number = 0;
1791 task_params.tx_io_size = data_len;
1792 task_params.rx_io_size = resp_sge->sge_len;
1794 sq_idx = qedi_get_wqe_idx(qedi_conn);
1795 task_params.sqe = &ep->sq[sq_idx];
1797 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1798 rval = init_initiator_nop_out_task(&task_params,
1799 &nop_out_pdu_header,
1800 &tx_sgl_task_params,
1801 &rx_sgl_task_params);
1805 qedi_ring_doorbell(qedi_conn);
1809 static int qedi_split_bd(struct qedi_cmd *cmd, u64 addr, int sg_len,
1812 struct scsi_sge *bd = cmd->io_tbl.sge_tbl;
1813 int frag_size, sg_frags;
1818 if (addr % QEDI_PAGE_SIZE)
1820 (QEDI_PAGE_SIZE - (addr % QEDI_PAGE_SIZE));
1822 frag_size = (sg_len > QEDI_BD_SPLIT_SZ) ? 0 :
1823 (sg_len % QEDI_BD_SPLIT_SZ);
1826 frag_size = QEDI_BD_SPLIT_SZ;
1828 bd[bd_index + sg_frags].sge_addr.lo = (addr & 0xffffffff);
1829 bd[bd_index + sg_frags].sge_addr.hi = (addr >> 32);
1830 bd[bd_index + sg_frags].sge_len = (u16)frag_size;
1831 QEDI_INFO(&cmd->conn->qedi->dbg_ctx, QEDI_LOG_IO,
1832 "split sge %d: addr=%llx, len=%x",
1833 (bd_index + sg_frags), addr, frag_size);
1835 addr += (u64)frag_size;
1837 sg_len -= frag_size;
1842 static int qedi_map_scsi_sg(struct qedi_ctx *qedi, struct qedi_cmd *cmd)
1844 struct scsi_cmnd *sc = cmd->scsi_cmd;
1845 struct scsi_sge *bd = cmd->io_tbl.sge_tbl;
1846 struct scatterlist *sg;
1855 WARN_ON(scsi_sg_count(sc) > QEDI_ISCSI_MAX_BDS_PER_CMD);
1857 sg_count = dma_map_sg(&qedi->pdev->dev, scsi_sglist(sc),
1858 scsi_sg_count(sc), sc->sc_data_direction);
1861 * New condition to send single SGE as cached-SGL.
1862 * Single SGE with length less than 64K.
1864 sg = scsi_sglist(sc);
1865 if ((sg_count == 1) && (sg_dma_len(sg) <= MAX_SGLEN_FOR_CACHESGL)) {
1866 sg_len = sg_dma_len(sg);
1867 addr = (u64)sg_dma_address(sg);
1869 bd[bd_count].sge_addr.lo = (addr & 0xffffffff);
1870 bd[bd_count].sge_addr.hi = (addr >> 32);
1871 bd[bd_count].sge_len = (u16)sg_len;
1873 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1874 "single-cashed-sgl: bd_count:%d addr=%llx, len=%x",
1875 sg_count, addr, sg_len);
1880 scsi_for_each_sg(sc, sg, sg_count, i) {
1881 sg_len = sg_dma_len(sg);
1882 addr = (u64)sg_dma_address(sg);
1883 end_addr = (addr + sg_len);
1886 * first sg elem in the 'list',
1887 * check if end addr is page-aligned.
1889 if ((i == 0) && (sg_count > 1) && (end_addr % QEDI_PAGE_SIZE))
1890 cmd->use_slowpath = true;
1893 * last sg elem in the 'list',
1894 * check if start addr is page-aligned.
1896 else if ((i == (sg_count - 1)) &&
1897 (sg_count > 1) && (addr % QEDI_PAGE_SIZE))
1898 cmd->use_slowpath = true;
1901 * middle sg elements in list,
1902 * check if start and end addr is page-aligned
1904 else if ((i != 0) && (i != (sg_count - 1)) &&
1905 ((addr % QEDI_PAGE_SIZE) ||
1906 (end_addr % QEDI_PAGE_SIZE)))
1907 cmd->use_slowpath = true;
1909 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "sg[%d] size=0x%x",
1912 if (sg_len > QEDI_BD_SPLIT_SZ) {
1913 sg_frags = qedi_split_bd(cmd, addr, sg_len, bd_count);
1916 bd[bd_count].sge_addr.lo = addr & 0xffffffff;
1917 bd[bd_count].sge_addr.hi = addr >> 32;
1918 bd[bd_count].sge_len = sg_len;
1920 byte_count += sg_len;
1921 bd_count += sg_frags;
1924 if (byte_count != scsi_bufflen(sc))
1925 QEDI_ERR(&qedi->dbg_ctx,
1926 "byte_count = %d != scsi_bufflen = %d\n", byte_count,
1929 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "byte_count = %d\n",
1932 WARN_ON(byte_count != scsi_bufflen(sc));
1937 static void qedi_iscsi_map_sg_list(struct qedi_cmd *cmd)
1940 struct scsi_cmnd *sc = cmd->scsi_cmd;
1942 if (scsi_sg_count(sc)) {
1943 bd_count = qedi_map_scsi_sg(cmd->conn->qedi, cmd);
1947 struct scsi_sge *bd = cmd->io_tbl.sge_tbl;
1949 bd[0].sge_addr.lo = 0;
1950 bd[0].sge_addr.hi = 0;
1954 cmd->io_tbl.sge_valid = bd_count;
1957 static void qedi_cpy_scsi_cdb(struct scsi_cmnd *sc, u32 *dstp)
1963 lpcnt = sc->cmd_len / sizeof(dword);
1964 srcp = (u8 *)sc->cmnd;
1966 memcpy(&dword, (const void *)srcp, 4);
1967 *dstp = cpu_to_be32(dword);
1971 if (sc->cmd_len & 0x3) {
1972 dword = (u32)srcp[0] | ((u32)srcp[1] << 8);
1973 *dstp = cpu_to_be32(dword);
1977 void qedi_trace_io(struct qedi_ctx *qedi, struct iscsi_task *task,
1978 u16 tid, int8_t direction)
1980 struct qedi_io_log *io_log;
1981 struct iscsi_conn *conn = task->conn;
1982 struct qedi_conn *qedi_conn = conn->dd_data;
1983 struct scsi_cmnd *sc_cmd = task->sc;
1984 unsigned long flags;
1986 spin_lock_irqsave(&qedi->io_trace_lock, flags);
1988 io_log = &qedi->io_trace_buf[qedi->io_trace_idx];
1989 io_log->direction = direction;
1990 io_log->task_id = tid;
1991 io_log->cid = qedi_conn->iscsi_conn_id;
1992 io_log->lun = sc_cmd->device->lun;
1993 io_log->op = sc_cmd->cmnd[0];
1994 io_log->lba[0] = sc_cmd->cmnd[2];
1995 io_log->lba[1] = sc_cmd->cmnd[3];
1996 io_log->lba[2] = sc_cmd->cmnd[4];
1997 io_log->lba[3] = sc_cmd->cmnd[5];
1998 io_log->bufflen = scsi_bufflen(sc_cmd);
1999 io_log->sg_count = scsi_sg_count(sc_cmd);
2000 io_log->fast_sgs = qedi->fast_sgls;
2001 io_log->cached_sgs = qedi->cached_sgls;
2002 io_log->slow_sgs = qedi->slow_sgls;
2003 io_log->cached_sge = qedi->use_cached_sge;
2004 io_log->slow_sge = qedi->use_slow_sge;
2005 io_log->fast_sge = qedi->use_fast_sge;
2006 io_log->result = sc_cmd->result;
2007 io_log->jiffies = jiffies;
2008 io_log->blk_req_cpu = smp_processor_id();
2010 if (direction == QEDI_IO_TRACE_REQ) {
2011 /* For requests we only care about the submission CPU */
2012 io_log->req_cpu = smp_processor_id() % qedi->num_queues;
2013 io_log->intr_cpu = 0;
2014 io_log->blk_rsp_cpu = 0;
2015 } else if (direction == QEDI_IO_TRACE_RSP) {
2016 io_log->req_cpu = smp_processor_id() % qedi->num_queues;
2017 io_log->intr_cpu = qedi->intr_cpu;
2018 io_log->blk_rsp_cpu = smp_processor_id();
2021 qedi->io_trace_idx++;
2022 if (qedi->io_trace_idx == QEDI_IO_TRACE_SIZE)
2023 qedi->io_trace_idx = 0;
2025 qedi->use_cached_sge = false;
2026 qedi->use_slow_sge = false;
2027 qedi->use_fast_sge = false;
2029 spin_unlock_irqrestore(&qedi->io_trace_lock, flags);
2032 int qedi_iscsi_send_ioreq(struct iscsi_task *task)
2034 struct iscsi_conn *conn = task->conn;
2035 struct iscsi_session *session = conn->session;
2036 struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session);
2037 struct qedi_ctx *qedi = iscsi_host_priv(shost);
2038 struct qedi_conn *qedi_conn = conn->dd_data;
2039 struct qedi_cmd *cmd = task->dd_data;
2040 struct scsi_cmnd *sc = task->sc;
2041 struct iscsi_cmd_hdr cmd_pdu_header;
2042 struct scsi_sgl_task_params tx_sgl_task_params;
2043 struct scsi_sgl_task_params rx_sgl_task_params;
2044 struct scsi_sgl_task_params *prx_sgl = NULL;
2045 struct scsi_sgl_task_params *ptx_sgl = NULL;
2046 struct iscsi_task_params task_params;
2047 struct iscsi_conn_params conn_params;
2048 struct scsi_initiator_cmd_params cmd_params;
2049 struct iscsi_task_context *fw_task_ctx;
2050 struct iscsi_cls_conn *cls_conn;
2051 struct iscsi_scsi_req *hdr = (struct iscsi_scsi_req *)task->hdr;
2052 enum iscsi_task_type task_type = MAX_ISCSI_TASK_TYPE;
2053 struct qedi_endpoint *ep;
2061 cls_conn = qedi_conn->cls_conn;
2062 conn = cls_conn->dd_data;
2064 qedi_iscsi_map_sg_list(cmd);
2065 int_to_scsilun(sc->device->lun, (struct scsi_lun *)scsi_lun);
2067 tid = qedi_get_task_idx(qedi);
2072 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, tid);
2073 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context));
2077 memset(&task_params, 0, sizeof(task_params));
2078 memset(&cmd_pdu_header, 0, sizeof(cmd_pdu_header));
2079 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
2080 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
2081 memset(&conn_params, 0, sizeof(conn_params));
2082 memset(&cmd_params, 0, sizeof(cmd_params));
2084 cq_idx = smp_processor_id() % qedi->num_queues;
2085 /* Update header info */
2086 SET_FIELD(cmd_pdu_header.flags_attr, ISCSI_CMD_HDR_ATTR,
2088 if (hdr->cdb[0] != TEST_UNIT_READY) {
2089 if (sc->sc_data_direction == DMA_TO_DEVICE) {
2090 SET_FIELD(cmd_pdu_header.flags_attr,
2091 ISCSI_CMD_HDR_WRITE, 1);
2092 task_type = ISCSI_TASK_TYPE_INITIATOR_WRITE;
2094 SET_FIELD(cmd_pdu_header.flags_attr,
2095 ISCSI_CMD_HDR_READ, 1);
2096 task_type = ISCSI_TASK_TYPE_INITIATOR_READ;
2100 cmd_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]);
2101 cmd_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]);
2103 qedi_update_itt_map(qedi, tid, task->itt, cmd);
2104 cmd_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
2105 cmd_pdu_header.expected_transfer_length = cpu_to_be32(hdr->data_length);
2106 cmd_pdu_header.hdr_second_dword = ntoh24(hdr->dlength);
2107 cmd_pdu_header.cmd_sn = be32_to_cpu(hdr->cmdsn);
2108 cmd_pdu_header.hdr_first_byte = hdr->opcode;
2109 qedi_cpy_scsi_cdb(sc, (u32 *)cmd_pdu_header.cdb);
2111 /* Fill tx AHS and rx buffer */
2112 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) {
2113 tx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl;
2114 tx_sgl_task_params.sgl_phys_addr.lo =
2115 (u32)(cmd->io_tbl.sge_tbl_dma);
2116 tx_sgl_task_params.sgl_phys_addr.hi =
2117 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32);
2118 tx_sgl_task_params.total_buffer_size = scsi_bufflen(sc);
2119 tx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid;
2120 if (cmd->use_slowpath)
2121 tx_sgl_task_params.small_mid_sge = true;
2122 } else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) {
2123 rx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl;
2124 rx_sgl_task_params.sgl_phys_addr.lo =
2125 (u32)(cmd->io_tbl.sge_tbl_dma);
2126 rx_sgl_task_params.sgl_phys_addr.hi =
2127 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32);
2128 rx_sgl_task_params.total_buffer_size = scsi_bufflen(sc);
2129 rx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid;
2132 /* Add conn param */
2133 conn_params.first_burst_length = conn->session->first_burst;
2134 conn_params.max_send_pdu_length = conn->max_xmit_dlength;
2135 conn_params.max_burst_length = conn->session->max_burst;
2136 if (conn->session->initial_r2t_en)
2137 conn_params.initial_r2t = true;
2138 if (conn->session->imm_data_en)
2139 conn_params.immediate_data = true;
2141 /* Add cmd params */
2142 cmd_params.sense_data_buffer_phys_addr.lo = (u32)cmd->sense_buffer_dma;
2143 cmd_params.sense_data_buffer_phys_addr.hi =
2144 (u32)((u64)cmd->sense_buffer_dma >> 32);
2145 /* Fill fw input params */
2146 task_params.context = fw_task_ctx;
2147 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
2148 task_params.itid = tid;
2149 task_params.cq_rss_number = cq_idx;
2150 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE)
2151 task_params.tx_io_size = scsi_bufflen(sc);
2152 else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ)
2153 task_params.rx_io_size = scsi_bufflen(sc);
2155 sq_idx = qedi_get_wqe_idx(qedi_conn);
2156 task_params.sqe = &ep->sq[sq_idx];
2158 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
2159 "%s: %s-SGL: sg_len=0x%x num_sges=0x%x first-sge-lo=0x%x first-sge-hi=0x%x\n",
2160 (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) ?
2161 "Write " : "Read ", (cmd->io_tbl.sge_valid == 1) ?
2162 "Single" : (cmd->use_slowpath ? "SLOW" : "FAST"),
2163 (u16)cmd->io_tbl.sge_valid, scsi_bufflen(sc),
2164 (u32)(cmd->io_tbl.sge_tbl_dma),
2165 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32));
2167 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
2169 if (task_params.tx_io_size != 0)
2170 ptx_sgl = &tx_sgl_task_params;
2171 if (task_params.rx_io_size != 0)
2172 prx_sgl = &rx_sgl_task_params;
2174 rval = init_initiator_rw_iscsi_task(&task_params, &conn_params,
2175 &cmd_params, &cmd_pdu_header,
2181 spin_lock(&qedi_conn->list_lock);
2182 list_add_tail(&cmd->io_cmd, &qedi_conn->active_cmd_list);
2183 cmd->io_cmd_in_list = true;
2184 qedi_conn->active_cmd_count++;
2185 spin_unlock(&qedi_conn->list_lock);
2187 qedi_ring_doorbell(qedi_conn);
2191 int qedi_iscsi_cleanup_task(struct iscsi_task *task, bool mark_cmd_node_deleted)
2193 struct iscsi_task_params task_params;
2194 struct qedi_endpoint *ep;
2195 struct iscsi_conn *conn = task->conn;
2196 struct qedi_conn *qedi_conn = conn->dd_data;
2197 struct qedi_cmd *cmd = task->dd_data;
2201 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
2202 "issue cleanup tid=0x%x itt=0x%x task_state=%d cmd_state=0%x cid=0x%x\n",
2203 cmd->task_id, get_itt(task->itt), task->state,
2204 cmd->state, qedi_conn->iscsi_conn_id);
2206 memset(&task_params, 0, sizeof(task_params));
2209 sq_idx = qedi_get_wqe_idx(qedi_conn);
2211 task_params.sqe = &ep->sq[sq_idx];
2212 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
2213 task_params.itid = cmd->task_id;
2215 rval = init_cleanup_task(&task_params);
2219 qedi_ring_doorbell(qedi_conn);