1 // SPDX-License-Identifier: GPL-2.0-only
3 * QLogic iSCSI Offload Driver
4 * Copyright (c) 2016 Cavium Inc.
7 #include <linux/blkdev.h>
8 #include <scsi/scsi_tcq.h>
9 #include <linux/delay.h>
12 #include "qedi_iscsi.h"
14 #include "qedi_fw_iscsi.h"
15 #include "qedi_fw_scsi.h"
17 static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn,
18 struct iscsi_task *mtask);
20 void qedi_iscsi_unmap_sg_list(struct qedi_cmd *cmd)
22 struct scsi_cmnd *sc = cmd->scsi_cmd;
24 if (cmd->io_tbl.sge_valid && sc) {
25 cmd->io_tbl.sge_valid = 0;
30 static void qedi_process_logout_resp(struct qedi_ctx *qedi,
32 struct iscsi_task *task,
33 struct qedi_conn *qedi_conn)
35 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
36 struct iscsi_logout_rsp *resp_hdr;
37 struct iscsi_session *session = conn->session;
38 struct iscsi_logout_response_hdr *cqe_logout_response;
41 cmd = (struct qedi_cmd *)task->dd_data;
42 cqe_logout_response = &cqe->cqe_common.iscsi_hdr.logout_response;
43 spin_lock(&session->back_lock);
44 resp_hdr = (struct iscsi_logout_rsp *)&qedi_conn->gen_pdu.resp_hdr;
45 memset(resp_hdr, 0, sizeof(struct iscsi_hdr));
46 resp_hdr->opcode = cqe_logout_response->opcode;
47 resp_hdr->flags = cqe_logout_response->flags;
48 resp_hdr->hlength = 0;
50 resp_hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age);
51 resp_hdr->statsn = cpu_to_be32(cqe_logout_response->stat_sn);
52 resp_hdr->exp_cmdsn = cpu_to_be32(cqe_logout_response->exp_cmd_sn);
53 resp_hdr->max_cmdsn = cpu_to_be32(cqe_logout_response->max_cmd_sn);
55 resp_hdr->t2wait = cpu_to_be32(cqe_logout_response->time_2_wait);
56 resp_hdr->t2retain = cpu_to_be32(cqe_logout_response->time_2_retain);
58 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
59 "Freeing tid=0x%x for cid=0x%x\n",
60 cmd->task_id, qedi_conn->iscsi_conn_id);
62 if (likely(cmd->io_cmd_in_list)) {
63 cmd->io_cmd_in_list = false;
64 list_del_init(&cmd->io_cmd);
65 qedi_conn->active_cmd_count--;
67 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
68 "Active cmd list node already deleted, tid=0x%x, cid=0x%x, io_cmd_node=%p\n",
69 cmd->task_id, qedi_conn->iscsi_conn_id,
73 cmd->state = RESPONSE_RECEIVED;
74 qedi_clear_task_idx(qedi, cmd->task_id);
75 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0);
77 spin_unlock(&session->back_lock);
80 static void qedi_process_text_resp(struct qedi_ctx *qedi,
82 struct iscsi_task *task,
83 struct qedi_conn *qedi_conn)
85 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
86 struct iscsi_session *session = conn->session;
87 struct e4_iscsi_task_context *task_ctx;
88 struct iscsi_text_rsp *resp_hdr_ptr;
89 struct iscsi_text_response_hdr *cqe_text_response;
93 cmd = (struct qedi_cmd *)task->dd_data;
94 task_ctx = qedi_get_task_mem(&qedi->tasks, cmd->task_id);
96 cqe_text_response = &cqe->cqe_common.iscsi_hdr.text_response;
97 spin_lock(&session->back_lock);
98 resp_hdr_ptr = (struct iscsi_text_rsp *)&qedi_conn->gen_pdu.resp_hdr;
99 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_hdr));
100 resp_hdr_ptr->opcode = cqe_text_response->opcode;
101 resp_hdr_ptr->flags = cqe_text_response->flags;
102 resp_hdr_ptr->hlength = 0;
104 hton24(resp_hdr_ptr->dlength,
105 (cqe_text_response->hdr_second_dword &
106 ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK));
108 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid,
110 resp_hdr_ptr->ttt = cqe_text_response->ttt;
111 resp_hdr_ptr->statsn = cpu_to_be32(cqe_text_response->stat_sn);
112 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_text_response->exp_cmd_sn);
113 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_text_response->max_cmd_sn);
115 pld_len = cqe_text_response->hdr_second_dword &
116 ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK;
117 qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len;
119 memset(task_ctx, '\0', sizeof(*task_ctx));
121 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
122 "Freeing tid=0x%x for cid=0x%x\n",
123 cmd->task_id, qedi_conn->iscsi_conn_id);
125 if (likely(cmd->io_cmd_in_list)) {
126 cmd->io_cmd_in_list = false;
127 list_del_init(&cmd->io_cmd);
128 qedi_conn->active_cmd_count--;
130 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
131 "Active cmd list node already deleted, tid=0x%x, cid=0x%x, io_cmd_node=%p\n",
132 cmd->task_id, qedi_conn->iscsi_conn_id,
136 cmd->state = RESPONSE_RECEIVED;
137 qedi_clear_task_idx(qedi, cmd->task_id);
139 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr,
140 qedi_conn->gen_pdu.resp_buf,
141 (qedi_conn->gen_pdu.resp_wr_ptr -
142 qedi_conn->gen_pdu.resp_buf));
143 spin_unlock(&session->back_lock);
146 static void qedi_tmf_resp_work(struct work_struct *work)
148 struct qedi_cmd *qedi_cmd =
149 container_of(work, struct qedi_cmd, tmf_work);
150 struct qedi_conn *qedi_conn = qedi_cmd->conn;
151 struct qedi_ctx *qedi = qedi_conn->qedi;
152 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
153 struct iscsi_session *session = conn->session;
154 struct iscsi_tm_rsp *resp_hdr_ptr;
157 set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
158 resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf;
160 iscsi_block_session(session->cls_session);
161 rval = qedi_cleanup_all_io(qedi, qedi_conn, qedi_cmd->task, true);
163 qedi_clear_task_idx(qedi, qedi_cmd->task_id);
164 iscsi_unblock_session(session->cls_session);
168 iscsi_unblock_session(session->cls_session);
169 qedi_clear_task_idx(qedi, qedi_cmd->task_id);
171 spin_lock(&session->back_lock);
172 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0);
173 spin_unlock(&session->back_lock);
177 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
180 static void qedi_process_tmf_resp(struct qedi_ctx *qedi,
181 union iscsi_cqe *cqe,
182 struct iscsi_task *task,
183 struct qedi_conn *qedi_conn)
186 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
187 struct iscsi_session *session = conn->session;
188 struct iscsi_tmf_response_hdr *cqe_tmp_response;
189 struct iscsi_tm_rsp *resp_hdr_ptr;
190 struct iscsi_tm *tmf_hdr;
191 struct qedi_cmd *qedi_cmd = NULL;
193 cqe_tmp_response = &cqe->cqe_common.iscsi_hdr.tmf_response;
195 qedi_cmd = task->dd_data;
196 qedi_cmd->tmf_resp_buf = kzalloc(sizeof(*resp_hdr_ptr), GFP_ATOMIC);
197 if (!qedi_cmd->tmf_resp_buf) {
198 QEDI_ERR(&qedi->dbg_ctx,
199 "Failed to allocate resp buf, cid=0x%x\n",
200 qedi_conn->iscsi_conn_id);
204 spin_lock(&session->back_lock);
205 resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf;
206 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_tm_rsp));
208 /* Fill up the header */
209 resp_hdr_ptr->opcode = cqe_tmp_response->opcode;
210 resp_hdr_ptr->flags = cqe_tmp_response->hdr_flags;
211 resp_hdr_ptr->response = cqe_tmp_response->hdr_response;
212 resp_hdr_ptr->hlength = 0;
214 hton24(resp_hdr_ptr->dlength,
215 (cqe_tmp_response->hdr_second_dword &
216 ISCSI_TMF_RESPONSE_HDR_DATA_SEG_LEN_MASK));
217 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid,
219 resp_hdr_ptr->statsn = cpu_to_be32(cqe_tmp_response->stat_sn);
220 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_tmp_response->exp_cmd_sn);
221 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_tmp_response->max_cmd_sn);
223 tmf_hdr = (struct iscsi_tm *)qedi_cmd->task->hdr;
225 if (likely(qedi_cmd->io_cmd_in_list)) {
226 qedi_cmd->io_cmd_in_list = false;
227 list_del_init(&qedi_cmd->io_cmd);
228 qedi_conn->active_cmd_count--;
231 if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
232 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) ||
233 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
234 ISCSI_TM_FUNC_TARGET_WARM_RESET) ||
235 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
236 ISCSI_TM_FUNC_TARGET_COLD_RESET)) {
237 INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_resp_work);
238 queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work);
242 qedi_clear_task_idx(qedi, qedi_cmd->task_id);
244 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0);
248 spin_unlock(&session->back_lock);
251 static void qedi_process_login_resp(struct qedi_ctx *qedi,
252 union iscsi_cqe *cqe,
253 struct iscsi_task *task,
254 struct qedi_conn *qedi_conn)
256 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
257 struct iscsi_session *session = conn->session;
258 struct e4_iscsi_task_context *task_ctx;
259 struct iscsi_login_rsp *resp_hdr_ptr;
260 struct iscsi_login_response_hdr *cqe_login_response;
261 struct qedi_cmd *cmd;
264 cmd = (struct qedi_cmd *)task->dd_data;
266 cqe_login_response = &cqe->cqe_common.iscsi_hdr.login_response;
267 task_ctx = qedi_get_task_mem(&qedi->tasks, cmd->task_id);
269 spin_lock(&session->back_lock);
270 resp_hdr_ptr = (struct iscsi_login_rsp *)&qedi_conn->gen_pdu.resp_hdr;
271 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_login_rsp));
272 resp_hdr_ptr->opcode = cqe_login_response->opcode;
273 resp_hdr_ptr->flags = cqe_login_response->flags_attr;
274 resp_hdr_ptr->hlength = 0;
276 hton24(resp_hdr_ptr->dlength,
277 (cqe_login_response->hdr_second_dword &
278 ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK));
279 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid,
281 resp_hdr_ptr->tsih = cqe_login_response->tsih;
282 resp_hdr_ptr->statsn = cpu_to_be32(cqe_login_response->stat_sn);
283 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_login_response->exp_cmd_sn);
284 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_login_response->max_cmd_sn);
285 resp_hdr_ptr->status_class = cqe_login_response->status_class;
286 resp_hdr_ptr->status_detail = cqe_login_response->status_detail;
287 pld_len = cqe_login_response->hdr_second_dword &
288 ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK;
289 qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len;
291 if (likely(cmd->io_cmd_in_list)) {
292 cmd->io_cmd_in_list = false;
293 list_del_init(&cmd->io_cmd);
294 qedi_conn->active_cmd_count--;
297 memset(task_ctx, '\0', sizeof(*task_ctx));
299 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr,
300 qedi_conn->gen_pdu.resp_buf,
301 (qedi_conn->gen_pdu.resp_wr_ptr -
302 qedi_conn->gen_pdu.resp_buf));
304 spin_unlock(&session->back_lock);
305 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
306 "Freeing tid=0x%x for cid=0x%x\n",
307 cmd->task_id, qedi_conn->iscsi_conn_id);
308 cmd->state = RESPONSE_RECEIVED;
309 qedi_clear_task_idx(qedi, cmd->task_id);
312 static void qedi_get_rq_bdq_buf(struct qedi_ctx *qedi,
313 struct iscsi_cqe_unsolicited *cqe,
318 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
319 "pld_len [%d], bdq_prod_idx [%d], idx [%d]\n",
320 len, qedi->bdq_prod_idx,
321 (qedi->bdq_prod_idx % qedi->rq_num_entries));
323 /* Obtain buffer address from rqe_opaque */
324 idx = cqe->rqe_opaque;
325 if (idx > (QEDI_BDQ_NUM - 1)) {
326 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
327 "wrong idx %d returned by FW, dropping the unsolicited pkt\n",
332 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
333 "rqe_opaque [0x%p], idx [%d]\n", cqe->rqe_opaque, idx);
335 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
336 "unsol_cqe_type = %d\n", cqe->unsol_cqe_type);
337 switch (cqe->unsol_cqe_type) {
338 case ISCSI_CQE_UNSOLICITED_SINGLE:
339 case ISCSI_CQE_UNSOLICITED_FIRST:
341 memcpy(ptr, (void *)qedi->bdq[idx].buf_addr, len);
343 case ISCSI_CQE_UNSOLICITED_MIDDLE:
344 case ISCSI_CQE_UNSOLICITED_LAST:
351 static void qedi_put_rq_bdq_buf(struct qedi_ctx *qedi,
352 struct iscsi_cqe_unsolicited *cqe,
358 /* Obtain buffer address from rqe_opaque */
359 idx = cqe->rqe_opaque;
360 if (idx > (QEDI_BDQ_NUM - 1)) {
361 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
362 "wrong idx %d returned by FW, dropping the unsolicited pkt\n",
367 pbl = (struct scsi_bd *)qedi->bdq_pbl;
368 pbl += (qedi->bdq_prod_idx % qedi->rq_num_entries);
369 pbl->address.hi = cpu_to_le32(QEDI_U64_HI(qedi->bdq[idx].buf_dma));
370 pbl->address.lo = cpu_to_le32(QEDI_U64_LO(qedi->bdq[idx].buf_dma));
371 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
372 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx] idx [%d]\n",
373 pbl, pbl->address.hi, pbl->address.lo, idx);
374 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0;
375 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0;
376 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0;
377 pbl->opaque.iscsi_opaque.opaque = cpu_to_le32(idx);
379 /* Increment producer to let f/w know we've handled the frame */
380 qedi->bdq_prod_idx += count;
382 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);
383 readw(qedi->bdq_primary_prod);
385 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
386 readw(qedi->bdq_secondary_prod);
389 static void qedi_unsol_pdu_adjust_bdq(struct qedi_ctx *qedi,
390 struct iscsi_cqe_unsolicited *cqe,
391 u32 pdu_len, u32 num_bdqs,
394 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
395 "num_bdqs [%d]\n", num_bdqs);
397 qedi_get_rq_bdq_buf(qedi, cqe, bdq_data, pdu_len);
398 qedi_put_rq_bdq_buf(qedi, cqe, (num_bdqs + 1));
401 static int qedi_process_nopin_mesg(struct qedi_ctx *qedi,
402 union iscsi_cqe *cqe,
403 struct iscsi_task *task,
404 struct qedi_conn *qedi_conn, u16 que_idx)
406 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
407 struct iscsi_session *session = conn->session;
408 struct iscsi_nop_in_hdr *cqe_nop_in;
409 struct iscsi_nopin *hdr;
410 struct qedi_cmd *cmd;
411 int tgt_async_nop = 0;
413 u32 pdu_len, num_bdqs;
414 char bdq_data[QEDI_BDQ_BUF_SIZE];
417 spin_lock_bh(&session->back_lock);
418 cqe_nop_in = &cqe->cqe_common.iscsi_hdr.nop_in;
420 pdu_len = cqe_nop_in->hdr_second_dword &
421 ISCSI_NOP_IN_HDR_DATA_SEG_LEN_MASK;
422 num_bdqs = pdu_len / QEDI_BDQ_BUF_SIZE;
424 hdr = (struct iscsi_nopin *)&qedi_conn->gen_pdu.resp_hdr;
425 memset(hdr, 0, sizeof(struct iscsi_hdr));
426 hdr->opcode = cqe_nop_in->opcode;
427 hdr->max_cmdsn = cpu_to_be32(cqe_nop_in->max_cmd_sn);
428 hdr->exp_cmdsn = cpu_to_be32(cqe_nop_in->exp_cmd_sn);
429 hdr->statsn = cpu_to_be32(cqe_nop_in->stat_sn);
430 hdr->ttt = cpu_to_be32(cqe_nop_in->ttt);
432 if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) {
433 spin_lock_irqsave(&qedi->hba_lock, flags);
434 qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited,
435 pdu_len, num_bdqs, bdq_data);
436 hdr->itt = RESERVED_ITT;
438 spin_unlock_irqrestore(&qedi->hba_lock, flags);
442 /* Response to one of our nop-outs */
445 hdr->flags = ISCSI_FLAG_CMD_FINAL;
446 hdr->itt = build_itt(cqe->cqe_solicited.itid,
450 memcpy(&hdr->lun, lun, sizeof(struct scsi_lun));
451 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
452 "Freeing tid=0x%x for cid=0x%x\n",
453 cmd->task_id, qedi_conn->iscsi_conn_id);
454 cmd->state = RESPONSE_RECEIVED;
455 spin_lock(&qedi_conn->list_lock);
456 if (likely(cmd->io_cmd_in_list)) {
457 cmd->io_cmd_in_list = false;
458 list_del_init(&cmd->io_cmd);
459 qedi_conn->active_cmd_count--;
462 spin_unlock(&qedi_conn->list_lock);
463 qedi_clear_task_idx(qedi, cmd->task_id);
467 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, bdq_data, pdu_len);
469 spin_unlock_bh(&session->back_lock);
470 return tgt_async_nop;
473 static void qedi_process_async_mesg(struct qedi_ctx *qedi,
474 union iscsi_cqe *cqe,
475 struct iscsi_task *task,
476 struct qedi_conn *qedi_conn,
479 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
480 struct iscsi_session *session = conn->session;
481 struct iscsi_async_msg_hdr *cqe_async_msg;
482 struct iscsi_async *resp_hdr;
484 u32 pdu_len, num_bdqs;
485 char bdq_data[QEDI_BDQ_BUF_SIZE];
488 spin_lock_bh(&session->back_lock);
490 cqe_async_msg = &cqe->cqe_common.iscsi_hdr.async_msg;
491 pdu_len = cqe_async_msg->hdr_second_dword &
492 ISCSI_ASYNC_MSG_HDR_DATA_SEG_LEN_MASK;
493 num_bdqs = pdu_len / QEDI_BDQ_BUF_SIZE;
495 if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) {
496 spin_lock_irqsave(&qedi->hba_lock, flags);
497 qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited,
498 pdu_len, num_bdqs, bdq_data);
499 spin_unlock_irqrestore(&qedi->hba_lock, flags);
502 resp_hdr = (struct iscsi_async *)&qedi_conn->gen_pdu.resp_hdr;
503 memset(resp_hdr, 0, sizeof(struct iscsi_hdr));
504 resp_hdr->opcode = cqe_async_msg->opcode;
505 resp_hdr->flags = 0x80;
507 lun[0] = cpu_to_be32(cqe_async_msg->lun.lo);
508 lun[1] = cpu_to_be32(cqe_async_msg->lun.hi);
509 memcpy(&resp_hdr->lun, lun, sizeof(struct scsi_lun));
510 resp_hdr->exp_cmdsn = cpu_to_be32(cqe_async_msg->exp_cmd_sn);
511 resp_hdr->max_cmdsn = cpu_to_be32(cqe_async_msg->max_cmd_sn);
512 resp_hdr->statsn = cpu_to_be32(cqe_async_msg->stat_sn);
514 resp_hdr->async_event = cqe_async_msg->async_event;
515 resp_hdr->async_vcode = cqe_async_msg->async_vcode;
517 resp_hdr->param1 = cpu_to_be16(cqe_async_msg->param1_rsrv);
518 resp_hdr->param2 = cpu_to_be16(cqe_async_msg->param2_rsrv);
519 resp_hdr->param3 = cpu_to_be16(cqe_async_msg->param3_rsrv);
521 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, bdq_data,
524 spin_unlock_bh(&session->back_lock);
527 static void qedi_process_reject_mesg(struct qedi_ctx *qedi,
528 union iscsi_cqe *cqe,
529 struct iscsi_task *task,
530 struct qedi_conn *qedi_conn,
533 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
534 struct iscsi_session *session = conn->session;
535 struct iscsi_reject_hdr *cqe_reject;
536 struct iscsi_reject *hdr;
537 u32 pld_len, num_bdqs;
540 spin_lock_bh(&session->back_lock);
541 cqe_reject = &cqe->cqe_common.iscsi_hdr.reject;
542 pld_len = cqe_reject->hdr_second_dword &
543 ISCSI_REJECT_HDR_DATA_SEG_LEN_MASK;
544 num_bdqs = pld_len / QEDI_BDQ_BUF_SIZE;
546 if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) {
547 spin_lock_irqsave(&qedi->hba_lock, flags);
548 qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited,
549 pld_len, num_bdqs, conn->data);
550 spin_unlock_irqrestore(&qedi->hba_lock, flags);
552 hdr = (struct iscsi_reject *)&qedi_conn->gen_pdu.resp_hdr;
553 memset(hdr, 0, sizeof(struct iscsi_hdr));
554 hdr->opcode = cqe_reject->opcode;
555 hdr->reason = cqe_reject->hdr_reason;
556 hdr->flags = cqe_reject->hdr_flags;
557 hton24(hdr->dlength, (cqe_reject->hdr_second_dword &
558 ISCSI_REJECT_HDR_DATA_SEG_LEN_MASK));
559 hdr->max_cmdsn = cpu_to_be32(cqe_reject->max_cmd_sn);
560 hdr->exp_cmdsn = cpu_to_be32(cqe_reject->exp_cmd_sn);
561 hdr->statsn = cpu_to_be32(cqe_reject->stat_sn);
562 hdr->ffffffff = cpu_to_be32(0xffffffff);
564 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr,
565 conn->data, pld_len);
566 spin_unlock_bh(&session->back_lock);
569 static void qedi_scsi_completion(struct qedi_ctx *qedi,
570 union iscsi_cqe *cqe,
571 struct iscsi_task *task,
572 struct iscsi_conn *conn)
574 struct scsi_cmnd *sc_cmd;
575 struct qedi_cmd *cmd = task->dd_data;
576 struct iscsi_session *session = conn->session;
577 struct iscsi_scsi_rsp *hdr;
578 struct iscsi_data_in_hdr *cqe_data_in;
580 struct qedi_conn *qedi_conn;
584 iscsi_cid = cqe->cqe_common.conn_id;
585 qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
587 cqe_data_in = &cqe->cqe_common.iscsi_hdr.data_in;
589 cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits;
591 spin_lock_bh(&session->back_lock);
592 /* get the scsi command */
593 sc_cmd = cmd->scsi_cmd;
596 QEDI_WARN(&qedi->dbg_ctx, "sc_cmd is NULL!\n");
600 if (!sc_cmd->SCp.ptr) {
601 QEDI_WARN(&qedi->dbg_ctx,
602 "SCp.ptr is NULL, returned in another context.\n");
606 if (!sc_cmd->request) {
607 QEDI_WARN(&qedi->dbg_ctx,
608 "sc_cmd->request is NULL, sc_cmd=%p.\n",
613 if (!sc_cmd->request->q) {
614 QEDI_WARN(&qedi->dbg_ctx,
615 "request->q is NULL so request is not valid, sc_cmd=%p.\n",
620 qedi_iscsi_unmap_sg_list(cmd);
622 hdr = (struct iscsi_scsi_rsp *)task->hdr;
623 hdr->opcode = cqe_data_in->opcode;
624 hdr->max_cmdsn = cpu_to_be32(cqe_data_in->max_cmd_sn);
625 hdr->exp_cmdsn = cpu_to_be32(cqe_data_in->exp_cmd_sn);
626 hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age);
627 hdr->response = cqe_data_in->reserved1;
628 hdr->cmd_status = cqe_data_in->status_rsvd;
629 hdr->flags = cqe_data_in->flags;
630 hdr->residual_count = cpu_to_be32(cqe_data_in->residual_count);
632 if (hdr->cmd_status == SAM_STAT_CHECK_CONDITION) {
633 datalen = cqe_data_in->reserved2 &
634 ISCSI_COMMON_HDR_DATA_SEG_LEN_MASK;
635 memcpy((char *)conn->data, (char *)cmd->sense_buffer, datalen);
638 /* If f/w reports data underrun err then set residual to IO transfer
639 * length, set Underrun flag and clear Overrun flag explicitly
641 if (unlikely(cqe_err_bits &&
642 GET_FIELD(cqe_err_bits, CQE_ERROR_BITMAP_UNDER_RUN_ERR))) {
643 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
644 "Under flow itt=0x%x proto flags=0x%x tid=0x%x cid 0x%x fw resid 0x%x sc dlen 0x%x\n",
645 hdr->itt, cqe_data_in->flags, cmd->task_id,
646 qedi_conn->iscsi_conn_id, hdr->residual_count,
647 scsi_bufflen(sc_cmd));
648 hdr->residual_count = cpu_to_be32(scsi_bufflen(sc_cmd));
649 hdr->flags |= ISCSI_FLAG_CMD_UNDERFLOW;
650 hdr->flags &= (~ISCSI_FLAG_CMD_OVERFLOW);
653 spin_lock(&qedi_conn->list_lock);
654 if (likely(cmd->io_cmd_in_list)) {
655 cmd->io_cmd_in_list = false;
656 list_del_init(&cmd->io_cmd);
657 qedi_conn->active_cmd_count--;
659 spin_unlock(&qedi_conn->list_lock);
661 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
662 "Freeing tid=0x%x for cid=0x%x\n",
663 cmd->task_id, qedi_conn->iscsi_conn_id);
664 cmd->state = RESPONSE_RECEIVED;
666 qedi_trace_io(qedi, task, cmd->task_id, QEDI_IO_TRACE_RSP);
668 qedi_clear_task_idx(qedi, cmd->task_id);
669 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr,
670 conn->data, datalen);
672 spin_unlock_bh(&session->back_lock);
675 static void qedi_mtask_completion(struct qedi_ctx *qedi,
676 union iscsi_cqe *cqe,
677 struct iscsi_task *task,
678 struct qedi_conn *conn, uint16_t que_idx)
680 struct iscsi_conn *iscsi_conn;
683 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte;
684 iscsi_conn = conn->cls_conn->dd_data;
686 switch (hdr_opcode) {
687 case ISCSI_OPCODE_SCSI_RESPONSE:
688 case ISCSI_OPCODE_DATA_IN:
689 qedi_scsi_completion(qedi, cqe, task, iscsi_conn);
691 case ISCSI_OPCODE_LOGIN_RESPONSE:
692 qedi_process_login_resp(qedi, cqe, task, conn);
694 case ISCSI_OPCODE_TMF_RESPONSE:
695 qedi_process_tmf_resp(qedi, cqe, task, conn);
697 case ISCSI_OPCODE_TEXT_RESPONSE:
698 qedi_process_text_resp(qedi, cqe, task, conn);
700 case ISCSI_OPCODE_LOGOUT_RESPONSE:
701 qedi_process_logout_resp(qedi, cqe, task, conn);
703 case ISCSI_OPCODE_NOP_IN:
704 qedi_process_nopin_mesg(qedi, cqe, task, conn, que_idx);
707 QEDI_ERR(&qedi->dbg_ctx, "unknown opcode\n");
711 static void qedi_process_nopin_local_cmpl(struct qedi_ctx *qedi,
712 struct iscsi_cqe_solicited *cqe,
713 struct iscsi_task *task,
714 struct qedi_conn *qedi_conn)
716 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
717 struct iscsi_session *session = conn->session;
718 struct qedi_cmd *cmd = task->dd_data;
720 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UNSOL,
721 "itid=0x%x, cmd task id=0x%x\n",
722 cqe->itid, cmd->task_id);
724 cmd->state = RESPONSE_RECEIVED;
725 qedi_clear_task_idx(qedi, cmd->task_id);
727 spin_lock_bh(&session->back_lock);
728 __iscsi_put_task(task);
729 spin_unlock_bh(&session->back_lock);
732 static void qedi_process_cmd_cleanup_resp(struct qedi_ctx *qedi,
733 struct iscsi_cqe_solicited *cqe,
734 struct iscsi_task *task,
735 struct iscsi_conn *conn)
737 struct qedi_work_map *work, *work_tmp;
738 u32 proto_itt = cqe->itid;
742 struct qedi_cmd *qedi_cmd = NULL;
745 struct qedi_conn *qedi_conn;
746 struct qedi_cmd *dbg_cmd;
747 struct iscsi_task *mtask;
748 struct iscsi_tm *tmf_hdr = NULL;
750 iscsi_cid = cqe->conn_id;
751 qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
753 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
754 "icid not found 0x%x\n", cqe->conn_id);
758 /* Based on this itt get the corresponding qedi_cmd */
759 spin_lock_bh(&qedi_conn->tmf_work_lock);
760 list_for_each_entry_safe(work, work_tmp, &qedi_conn->tmf_work_list,
762 if (work->rtid == proto_itt) {
763 /* We found the command */
764 qedi_cmd = work->qedi_cmd;
765 if (!qedi_cmd->list_tmf_work) {
766 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
767 "TMF work not found, cqe->tid=0x%x, cid=0x%x\n",
768 proto_itt, qedi_conn->iscsi_conn_id);
772 mtask = qedi_cmd->task;
773 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
776 list_del_init(&work->list);
778 qedi_cmd->list_tmf_work = NULL;
781 spin_unlock_bh(&qedi_conn->tmf_work_lock);
784 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
785 "TMF work, cqe->tid=0x%x, tmf flags=0x%x, cid=0x%x\n",
786 proto_itt, tmf_hdr->flags, qedi_conn->iscsi_conn_id);
788 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
789 ISCSI_TM_FUNC_ABORT_TASK) {
790 spin_lock_bh(&conn->session->back_lock);
792 protoitt = build_itt(get_itt(tmf_hdr->rtt),
794 task = iscsi_itt_to_task(conn, protoitt);
796 spin_unlock_bh(&conn->session->back_lock);
799 QEDI_NOTICE(&qedi->dbg_ctx,
800 "IO task completed, tmf rtt=0x%x, cid=0x%x\n",
801 get_itt(tmf_hdr->rtt),
802 qedi_conn->iscsi_conn_id);
806 dbg_cmd = task->dd_data;
808 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
809 "Abort tmf rtt=0x%x, i/o itt=0x%x, i/o tid=0x%x, cid=0x%x\n",
810 get_itt(tmf_hdr->rtt), get_itt(task->itt),
811 dbg_cmd->task_id, qedi_conn->iscsi_conn_id);
813 if (qedi_cmd->state == CLEANUP_WAIT_FAILED)
814 qedi_cmd->state = CLEANUP_RECV;
816 qedi_clear_task_idx(qedi_conn->qedi, rtid);
818 spin_lock(&qedi_conn->list_lock);
819 list_del_init(&dbg_cmd->io_cmd);
820 qedi_conn->active_cmd_count--;
821 spin_unlock(&qedi_conn->list_lock);
822 qedi_cmd->state = CLEANUP_RECV;
823 wake_up_interruptible(&qedi_conn->wait_queue);
825 } else if (qedi_conn->cmd_cleanup_req > 0) {
826 spin_lock_bh(&conn->session->back_lock);
827 qedi_get_proto_itt(qedi, cqe->itid, &ptmp_itt);
828 protoitt = build_itt(ptmp_itt, conn->session->age);
829 task = iscsi_itt_to_task(conn, protoitt);
830 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
831 "cleanup io itid=0x%x, protoitt=0x%x, cmd_cleanup_cmpl=%d, cid=0x%x\n",
832 cqe->itid, protoitt, qedi_conn->cmd_cleanup_cmpl,
833 qedi_conn->iscsi_conn_id);
835 spin_unlock_bh(&conn->session->back_lock);
837 QEDI_NOTICE(&qedi->dbg_ctx,
838 "task is null, itid=0x%x, cid=0x%x\n",
839 cqe->itid, qedi_conn->iscsi_conn_id);
842 qedi_conn->cmd_cleanup_cmpl++;
843 wake_up(&qedi_conn->wait_queue);
845 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
846 "Freeing tid=0x%x for cid=0x%x\n",
847 cqe->itid, qedi_conn->iscsi_conn_id);
848 qedi_clear_task_idx(qedi_conn->qedi, cqe->itid);
851 qedi_get_proto_itt(qedi, cqe->itid, &ptmp_itt);
852 protoitt = build_itt(ptmp_itt, conn->session->age);
853 task = iscsi_itt_to_task(conn, protoitt);
854 QEDI_ERR(&qedi->dbg_ctx,
855 "Delayed or untracked cleanup response, itt=0x%x, tid=0x%x, cid=0x%x, task=%p\n",
856 protoitt, cqe->itid, qedi_conn->iscsi_conn_id, task);
860 void qedi_fp_process_cqes(struct qedi_work *work)
862 struct qedi_ctx *qedi = work->qedi;
863 union iscsi_cqe *cqe = &work->cqe;
864 struct iscsi_task *task = NULL;
865 struct iscsi_nopout *nopout_hdr;
866 struct qedi_conn *q_conn;
867 struct iscsi_conn *conn;
868 struct qedi_cmd *qedi_cmd;
872 u16 que_idx = work->que_idx;
875 comp_type = cqe->cqe_common.cqe_type;
876 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte;
878 cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits;
880 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
881 "fw_cid=0x%x, cqe type=0x%x, opcode=0x%x\n",
882 cqe->cqe_common.conn_id, comp_type, hdr_opcode);
884 if (comp_type >= MAX_ISCSI_CQES_TYPE) {
885 QEDI_WARN(&qedi->dbg_ctx, "Invalid CqE type\n");
889 iscsi_cid = cqe->cqe_common.conn_id;
890 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
892 QEDI_WARN(&qedi->dbg_ctx,
893 "Session no longer exists for cid=0x%x!!\n",
898 conn = q_conn->cls_conn->dd_data;
900 if (unlikely(cqe_err_bits &&
901 GET_FIELD(cqe_err_bits,
902 CQE_ERROR_BITMAP_DATA_DIGEST_ERR))) {
903 iscsi_conn_failure(conn, ISCSI_ERR_DATA_DGST);
908 case ISCSI_CQE_TYPE_SOLICITED:
909 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
910 qedi_cmd = container_of(work, struct qedi_cmd, cqe_work);
911 task = qedi_cmd->task;
913 QEDI_WARN(&qedi->dbg_ctx, "task is NULL\n");
917 /* Process NOPIN local completion */
918 nopout_hdr = (struct iscsi_nopout *)task->hdr;
919 if ((nopout_hdr->itt == RESERVED_ITT) &&
920 (cqe->cqe_solicited.itid != (u16)RESERVED_ITT)) {
921 qedi_process_nopin_local_cmpl(qedi, &cqe->cqe_solicited,
924 cqe->cqe_solicited.itid =
925 qedi_get_itt(cqe->cqe_solicited);
926 /* Process other solicited responses */
927 qedi_mtask_completion(qedi, cqe, task, q_conn, que_idx);
930 case ISCSI_CQE_TYPE_UNSOLICITED:
931 switch (hdr_opcode) {
932 case ISCSI_OPCODE_NOP_IN:
933 qedi_process_nopin_mesg(qedi, cqe, task, q_conn,
936 case ISCSI_OPCODE_ASYNC_MSG:
937 qedi_process_async_mesg(qedi, cqe, task, q_conn,
940 case ISCSI_OPCODE_REJECT:
941 qedi_process_reject_mesg(qedi, cqe, task, q_conn,
945 goto exit_fp_process;
946 case ISCSI_CQE_TYPE_DUMMY:
947 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "Dummy CqE\n");
948 goto exit_fp_process;
949 case ISCSI_CQE_TYPE_TASK_CLEANUP:
950 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "CleanUp CqE\n");
951 qedi_process_cmd_cleanup_resp(qedi, &cqe->cqe_solicited, task,
953 goto exit_fp_process;
955 QEDI_ERR(&qedi->dbg_ctx, "Error cqe.\n");
963 static void qedi_ring_doorbell(struct qedi_conn *qedi_conn)
965 struct iscsi_db_data dbell = { 0 };
969 dbell.params |= DB_DEST_XCM << ISCSI_DB_DATA_DEST_SHIFT;
970 dbell.params |= DB_AGG_CMD_SET << ISCSI_DB_DATA_AGG_CMD_SHIFT;
972 DQ_XCM_ISCSI_SQ_PROD_CMD << ISCSI_DB_DATA_AGG_VAL_SEL_SHIFT;
974 dbell.sq_prod = qedi_conn->ep->fw_sq_prod_idx;
975 writel(*(u32 *)&dbell, qedi_conn->ep->p_doorbell);
977 /* Make sure fw write idx is coherent, and include both memory barriers
978 * as a failsafe as for some architectures the call is the same but on
979 * others they are two different assembly operations.
982 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_MP_REQ,
983 "prod_idx=0x%x, fw_prod_idx=0x%x, cid=0x%x\n",
984 qedi_conn->ep->sq_prod_idx, qedi_conn->ep->fw_sq_prod_idx,
985 qedi_conn->iscsi_conn_id);
988 static u16 qedi_get_wqe_idx(struct qedi_conn *qedi_conn)
990 struct qedi_endpoint *ep;
994 rval = ep->sq_prod_idx;
996 /* Increament SQ index */
998 ep->fw_sq_prod_idx++;
999 if (ep->sq_prod_idx == QEDI_SQ_SIZE)
1000 ep->sq_prod_idx = 0;
1005 int qedi_send_iscsi_login(struct qedi_conn *qedi_conn,
1006 struct iscsi_task *task)
1008 struct iscsi_login_req_hdr login_req_pdu_header;
1009 struct scsi_sgl_task_params tx_sgl_task_params;
1010 struct scsi_sgl_task_params rx_sgl_task_params;
1011 struct iscsi_task_params task_params;
1012 struct e4_iscsi_task_context *fw_task_ctx;
1013 struct qedi_ctx *qedi = qedi_conn->qedi;
1014 struct iscsi_login_req *login_hdr;
1015 struct scsi_sge *resp_sge = NULL;
1016 struct qedi_cmd *qedi_cmd;
1017 struct qedi_endpoint *ep;
1022 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1023 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1025 login_hdr = (struct iscsi_login_req *)task->hdr;
1027 tid = qedi_get_task_idx(qedi);
1032 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
1034 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
1036 qedi_cmd->task_id = tid;
1038 memset(&task_params, 0, sizeof(task_params));
1039 memset(&login_req_pdu_header, 0, sizeof(login_req_pdu_header));
1040 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1041 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1042 /* Update header info */
1043 login_req_pdu_header.opcode = login_hdr->opcode;
1044 login_req_pdu_header.version_min = login_hdr->min_version;
1045 login_req_pdu_header.version_max = login_hdr->max_version;
1046 login_req_pdu_header.flags_attr = login_hdr->flags;
1047 login_req_pdu_header.isid_tabc = swab32p((u32 *)login_hdr->isid);
1048 login_req_pdu_header.isid_d = swab16p((u16 *)&login_hdr->isid[4]);
1050 login_req_pdu_header.tsih = login_hdr->tsih;
1051 login_req_pdu_header.hdr_second_dword = ntoh24(login_hdr->dlength);
1053 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1054 login_req_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1055 login_req_pdu_header.cid = qedi_conn->iscsi_conn_id;
1056 login_req_pdu_header.cmd_sn = be32_to_cpu(login_hdr->cmdsn);
1057 login_req_pdu_header.exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn);
1058 login_req_pdu_header.exp_stat_sn = 0;
1060 /* Fill tx AHS and rx buffer */
1061 tx_sgl_task_params.sgl =
1062 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1063 tx_sgl_task_params.sgl_phys_addr.lo =
1064 (u32)(qedi_conn->gen_pdu.req_dma_addr);
1065 tx_sgl_task_params.sgl_phys_addr.hi =
1066 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
1067 tx_sgl_task_params.total_buffer_size = ntoh24(login_hdr->dlength);
1068 tx_sgl_task_params.num_sges = 1;
1070 rx_sgl_task_params.sgl =
1071 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1072 rx_sgl_task_params.sgl_phys_addr.lo =
1073 (u32)(qedi_conn->gen_pdu.resp_dma_addr);
1074 rx_sgl_task_params.sgl_phys_addr.hi =
1075 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
1076 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len;
1077 rx_sgl_task_params.num_sges = 1;
1079 /* Fill fw input params */
1080 task_params.context = fw_task_ctx;
1081 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1082 task_params.itid = tid;
1083 task_params.cq_rss_number = 0;
1084 task_params.tx_io_size = ntoh24(login_hdr->dlength);
1085 task_params.rx_io_size = resp_sge->sge_len;
1087 sq_idx = qedi_get_wqe_idx(qedi_conn);
1088 task_params.sqe = &ep->sq[sq_idx];
1090 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1091 rval = init_initiator_login_request_task(&task_params,
1092 &login_req_pdu_header,
1093 &tx_sgl_task_params,
1094 &rx_sgl_task_params);
1098 spin_lock(&qedi_conn->list_lock);
1099 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1100 qedi_cmd->io_cmd_in_list = true;
1101 qedi_conn->active_cmd_count++;
1102 spin_unlock(&qedi_conn->list_lock);
1104 qedi_ring_doorbell(qedi_conn);
1108 int qedi_send_iscsi_logout(struct qedi_conn *qedi_conn,
1109 struct iscsi_task *task)
1111 struct iscsi_logout_req_hdr logout_pdu_header;
1112 struct scsi_sgl_task_params tx_sgl_task_params;
1113 struct scsi_sgl_task_params rx_sgl_task_params;
1114 struct iscsi_task_params task_params;
1115 struct e4_iscsi_task_context *fw_task_ctx;
1116 struct iscsi_logout *logout_hdr = NULL;
1117 struct qedi_ctx *qedi = qedi_conn->qedi;
1118 struct qedi_cmd *qedi_cmd;
1119 struct qedi_endpoint *ep;
1124 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1125 logout_hdr = (struct iscsi_logout *)task->hdr;
1128 tid = qedi_get_task_idx(qedi);
1133 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
1135 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
1137 qedi_cmd->task_id = tid;
1139 memset(&task_params, 0, sizeof(task_params));
1140 memset(&logout_pdu_header, 0, sizeof(logout_pdu_header));
1141 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1142 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1144 /* Update header info */
1145 logout_pdu_header.opcode = logout_hdr->opcode;
1146 logout_pdu_header.reason_code = 0x80 | logout_hdr->flags;
1147 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1148 logout_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1149 logout_pdu_header.exp_stat_sn = be32_to_cpu(logout_hdr->exp_statsn);
1150 logout_pdu_header.cmd_sn = be32_to_cpu(logout_hdr->cmdsn);
1151 logout_pdu_header.cid = qedi_conn->iscsi_conn_id;
1153 /* Fill fw input params */
1154 task_params.context = fw_task_ctx;
1155 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1156 task_params.itid = tid;
1157 task_params.cq_rss_number = 0;
1158 task_params.tx_io_size = 0;
1159 task_params.rx_io_size = 0;
1161 sq_idx = qedi_get_wqe_idx(qedi_conn);
1162 task_params.sqe = &ep->sq[sq_idx];
1163 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1165 rval = init_initiator_logout_request_task(&task_params,
1171 spin_lock(&qedi_conn->list_lock);
1172 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1173 qedi_cmd->io_cmd_in_list = true;
1174 qedi_conn->active_cmd_count++;
1175 spin_unlock(&qedi_conn->list_lock);
1177 qedi_ring_doorbell(qedi_conn);
1181 int qedi_cleanup_all_io(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn,
1182 struct iscsi_task *task, bool in_recovery)
1185 struct iscsi_task *ctask;
1186 struct qedi_cmd *cmd, *cmd_tmp;
1187 struct iscsi_tm *tmf_hdr;
1188 unsigned int lun = 0;
1189 bool lun_reset = false;
1190 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
1191 struct iscsi_session *session = conn->session;
1193 /* From recovery, task is NULL or from tmf resp valid task */
1195 tmf_hdr = (struct iscsi_tm *)task->hdr;
1197 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1198 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) {
1200 lun = scsilun_to_int(&tmf_hdr->lun);
1204 qedi_conn->cmd_cleanup_req = 0;
1205 qedi_conn->cmd_cleanup_cmpl = 0;
1207 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1208 "active_cmd_count=%d, cid=0x%x, in_recovery=%d, lun_reset=%d\n",
1209 qedi_conn->active_cmd_count, qedi_conn->iscsi_conn_id,
1210 in_recovery, lun_reset);
1213 spin_lock_bh(&session->back_lock);
1215 spin_lock(&qedi_conn->list_lock);
1217 list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list,
1224 if (cmd->scsi_cmd && cmd->scsi_cmd->device) {
1225 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1226 "tid=0x%x itt=0x%x scsi_cmd_ptr=%p device=%p task_state=%d cmd_state=0%x cid=0x%x\n",
1227 cmd->task_id, get_itt(ctask->itt),
1228 cmd->scsi_cmd, cmd->scsi_cmd->device,
1229 ctask->state, cmd->state,
1230 qedi_conn->iscsi_conn_id);
1231 if (cmd->scsi_cmd->device->lun != lun)
1235 qedi_conn->cmd_cleanup_req++;
1236 qedi_iscsi_cleanup_task(ctask, true);
1238 list_del_init(&cmd->io_cmd);
1239 qedi_conn->active_cmd_count--;
1240 QEDI_WARN(&qedi->dbg_ctx,
1241 "Deleted active cmd list node io_cmd=%p, cid=0x%x\n",
1242 &cmd->io_cmd, qedi_conn->iscsi_conn_id);
1245 spin_unlock(&qedi_conn->list_lock);
1248 spin_unlock_bh(&session->back_lock);
1250 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1251 "cmd_cleanup_req=%d, cid=0x%x\n",
1252 qedi_conn->cmd_cleanup_req,
1253 qedi_conn->iscsi_conn_id);
1255 rval = wait_event_interruptible_timeout(qedi_conn->wait_queue,
1256 ((qedi_conn->cmd_cleanup_req ==
1257 qedi_conn->cmd_cleanup_cmpl) ||
1261 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1262 "i/o cmd_cleanup_req=%d, equal to cmd_cleanup_cmpl=%d, cid=0x%x\n",
1263 qedi_conn->cmd_cleanup_req,
1264 qedi_conn->cmd_cleanup_cmpl,
1265 qedi_conn->iscsi_conn_id);
1270 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1271 "i/o cmd_cleanup_req=%d, not equal to cmd_cleanup_cmpl=%d, cid=0x%x\n",
1272 qedi_conn->cmd_cleanup_req,
1273 qedi_conn->cmd_cleanup_cmpl,
1274 qedi_conn->iscsi_conn_id);
1276 iscsi_host_for_each_session(qedi->shost,
1277 qedi_mark_device_missing);
1278 qedi_ops->common->drain(qedi->cdev);
1280 /* Enable IOs for all other sessions except current.*/
1281 if (!wait_event_interruptible_timeout(qedi_conn->wait_queue,
1282 (qedi_conn->cmd_cleanup_req ==
1283 qedi_conn->cmd_cleanup_cmpl),
1285 iscsi_host_for_each_session(qedi->shost,
1286 qedi_mark_device_available);
1290 iscsi_host_for_each_session(qedi->shost,
1291 qedi_mark_device_available);
1296 void qedi_clearsq(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn,
1297 struct iscsi_task *task)
1299 struct qedi_endpoint *qedi_ep;
1302 qedi_ep = qedi_conn->ep;
1303 qedi_conn->cmd_cleanup_req = 0;
1304 qedi_conn->cmd_cleanup_cmpl = 0;
1307 QEDI_WARN(&qedi->dbg_ctx,
1308 "Cannot proceed, ep already disconnected, cid=0x%x\n",
1309 qedi_conn->iscsi_conn_id);
1313 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1314 "Clearing SQ for cid=0x%x, conn=%p, ep=%p\n",
1315 qedi_conn->iscsi_conn_id, qedi_conn, qedi_ep);
1317 qedi_ops->clear_sq(qedi->cdev, qedi_ep->handle);
1319 rval = qedi_cleanup_all_io(qedi, qedi_conn, task, true);
1321 QEDI_ERR(&qedi->dbg_ctx,
1322 "fatal error, need hard reset, cid=0x%x\n",
1323 qedi_conn->iscsi_conn_id);
1328 static int qedi_wait_for_cleanup_request(struct qedi_ctx *qedi,
1329 struct qedi_conn *qedi_conn,
1330 struct iscsi_task *task,
1331 struct qedi_cmd *qedi_cmd,
1332 struct qedi_work_map *list_work)
1334 struct qedi_cmd *cmd = (struct qedi_cmd *)task->dd_data;
1337 wait = wait_event_interruptible_timeout(qedi_conn->wait_queue,
1338 ((qedi_cmd->state ==
1340 ((qedi_cmd->type == TYPEIO) &&
1342 RESPONSE_RECEIVED))),
1345 qedi_cmd->state = CLEANUP_WAIT_FAILED;
1347 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1348 "Cleanup timedout tid=0x%x, issue connection recovery, cid=0x%x\n",
1349 cmd->task_id, qedi_conn->iscsi_conn_id);
1356 static void qedi_tmf_work(struct work_struct *work)
1358 struct qedi_cmd *qedi_cmd =
1359 container_of(work, struct qedi_cmd, tmf_work);
1360 struct qedi_conn *qedi_conn = qedi_cmd->conn;
1361 struct qedi_ctx *qedi = qedi_conn->qedi;
1362 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
1363 struct qedi_work_map *list_work = NULL;
1364 struct iscsi_task *mtask;
1365 struct qedi_cmd *cmd;
1366 struct iscsi_task *ctask;
1367 struct iscsi_tm *tmf_hdr;
1371 mtask = qedi_cmd->task;
1372 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
1373 set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
1375 ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt);
1376 if (!ctask || !ctask->sc) {
1377 QEDI_ERR(&qedi->dbg_ctx, "Task already completed\n");
1381 cmd = (struct qedi_cmd *)ctask->dd_data;
1382 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1383 "Abort tmf rtt=0x%x, cmd itt=0x%x, cmd tid=0x%x, cid=0x%x\n",
1384 get_itt(tmf_hdr->rtt), get_itt(ctask->itt), cmd->task_id,
1385 qedi_conn->iscsi_conn_id);
1387 if (qedi_do_not_recover) {
1388 QEDI_ERR(&qedi->dbg_ctx, "DONT SEND CLEANUP/ABORT %d\n",
1389 qedi_do_not_recover);
1393 list_work = kzalloc(sizeof(*list_work), GFP_ATOMIC);
1395 QEDI_ERR(&qedi->dbg_ctx, "Memory allocation failed\n");
1399 qedi_cmd->type = TYPEIO;
1400 list_work->qedi_cmd = qedi_cmd;
1401 list_work->rtid = cmd->task_id;
1402 list_work->state = QEDI_WORK_SCHEDULED;
1403 qedi_cmd->list_tmf_work = list_work;
1405 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1406 "Queue tmf work=%p, list node=%p, cid=0x%x, tmf flags=0x%x\n",
1407 list_work->ptr_tmf_work, list_work, qedi_conn->iscsi_conn_id,
1410 spin_lock_bh(&qedi_conn->tmf_work_lock);
1411 list_add_tail(&list_work->list, &qedi_conn->tmf_work_list);
1412 spin_unlock_bh(&qedi_conn->tmf_work_lock);
1414 qedi_iscsi_cleanup_task(ctask, false);
1416 rval = qedi_wait_for_cleanup_request(qedi, qedi_conn, ctask, qedi_cmd,
1419 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1420 "FW cleanup got escalated, cid=0x%x\n",
1421 qedi_conn->iscsi_conn_id);
1425 tid = qedi_get_task_idx(qedi);
1427 QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n",
1428 qedi_conn->iscsi_conn_id);
1432 qedi_cmd->task_id = tid;
1433 qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task);
1436 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
1440 spin_lock_bh(&qedi_conn->tmf_work_lock);
1441 if (!qedi_cmd->list_tmf_work) {
1442 list_del_init(&list_work->list);
1443 qedi_cmd->list_tmf_work = NULL;
1446 spin_unlock_bh(&qedi_conn->tmf_work_lock);
1448 spin_lock(&qedi_conn->list_lock);
1449 list_del_init(&cmd->io_cmd);
1450 qedi_conn->active_cmd_count--;
1451 spin_unlock(&qedi_conn->list_lock);
1453 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
1456 static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn,
1457 struct iscsi_task *mtask)
1459 struct iscsi_tmf_request_hdr tmf_pdu_header;
1460 struct iscsi_task_params task_params;
1461 struct qedi_ctx *qedi = qedi_conn->qedi;
1462 struct e4_iscsi_task_context *fw_task_ctx;
1463 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
1464 struct iscsi_task *ctask;
1465 struct iscsi_tm *tmf_hdr;
1466 struct qedi_cmd *qedi_cmd;
1467 struct qedi_cmd *cmd;
1468 struct qedi_endpoint *ep;
1474 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
1475 qedi_cmd = (struct qedi_cmd *)mtask->dd_data;
1480 tid = qedi_get_task_idx(qedi);
1485 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
1487 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
1489 qedi_cmd->task_id = tid;
1491 memset(&task_params, 0, sizeof(task_params));
1492 memset(&tmf_pdu_header, 0, sizeof(tmf_pdu_header));
1494 /* Update header info */
1495 qedi_update_itt_map(qedi, tid, mtask->itt, qedi_cmd);
1496 tmf_pdu_header.itt = qedi_set_itt(tid, get_itt(mtask->itt));
1497 tmf_pdu_header.cmd_sn = be32_to_cpu(tmf_hdr->cmdsn);
1499 memcpy(scsi_lun, &tmf_hdr->lun, sizeof(struct scsi_lun));
1500 tmf_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]);
1501 tmf_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]);
1503 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1504 ISCSI_TM_FUNC_ABORT_TASK) {
1505 ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt);
1506 if (!ctask || !ctask->sc) {
1507 QEDI_ERR(&qedi->dbg_ctx,
1508 "Could not get reference task\n");
1511 cmd = (struct qedi_cmd *)ctask->dd_data;
1512 tmf_pdu_header.rtt =
1513 qedi_set_itt(cmd->task_id,
1514 get_itt(tmf_hdr->rtt));
1516 tmf_pdu_header.rtt = ISCSI_RESERVED_TAG;
1519 tmf_pdu_header.opcode = tmf_hdr->opcode;
1520 tmf_pdu_header.function = tmf_hdr->flags;
1521 tmf_pdu_header.hdr_second_dword = ntoh24(tmf_hdr->dlength);
1522 tmf_pdu_header.ref_cmd_sn = be32_to_cpu(tmf_hdr->refcmdsn);
1524 /* Fill fw input params */
1525 task_params.context = fw_task_ctx;
1526 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1527 task_params.itid = tid;
1528 task_params.cq_rss_number = 0;
1529 task_params.tx_io_size = 0;
1530 task_params.rx_io_size = 0;
1532 sq_idx = qedi_get_wqe_idx(qedi_conn);
1533 task_params.sqe = &ep->sq[sq_idx];
1535 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1536 rval = init_initiator_tmf_request_task(&task_params,
1541 spin_lock(&qedi_conn->list_lock);
1542 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1543 qedi_cmd->io_cmd_in_list = true;
1544 qedi_conn->active_cmd_count++;
1545 spin_unlock(&qedi_conn->list_lock);
1547 qedi_ring_doorbell(qedi_conn);
1551 int qedi_iscsi_abort_work(struct qedi_conn *qedi_conn,
1552 struct iscsi_task *mtask)
1554 struct qedi_ctx *qedi = qedi_conn->qedi;
1555 struct iscsi_tm *tmf_hdr;
1556 struct qedi_cmd *qedi_cmd = (struct qedi_cmd *)mtask->dd_data;
1559 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
1560 qedi_cmd->task = mtask;
1562 /* If abort task then schedule the work and return */
1563 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1564 ISCSI_TM_FUNC_ABORT_TASK) {
1565 qedi_cmd->state = CLEANUP_WAIT;
1566 INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_work);
1567 queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work);
1569 } else if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1570 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) ||
1571 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1572 ISCSI_TM_FUNC_TARGET_WARM_RESET) ||
1573 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1574 ISCSI_TM_FUNC_TARGET_COLD_RESET)) {
1575 tid = qedi_get_task_idx(qedi);
1577 QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n",
1578 qedi_conn->iscsi_conn_id);
1581 qedi_cmd->task_id = tid;
1583 qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task);
1586 QEDI_ERR(&qedi->dbg_ctx, "Invalid tmf, cid=0x%x\n",
1587 qedi_conn->iscsi_conn_id);
1594 int qedi_send_iscsi_text(struct qedi_conn *qedi_conn,
1595 struct iscsi_task *task)
1597 struct iscsi_text_request_hdr text_request_pdu_header;
1598 struct scsi_sgl_task_params tx_sgl_task_params;
1599 struct scsi_sgl_task_params rx_sgl_task_params;
1600 struct iscsi_task_params task_params;
1601 struct e4_iscsi_task_context *fw_task_ctx;
1602 struct qedi_ctx *qedi = qedi_conn->qedi;
1603 struct iscsi_text *text_hdr;
1604 struct scsi_sge *req_sge = NULL;
1605 struct scsi_sge *resp_sge = NULL;
1606 struct qedi_cmd *qedi_cmd;
1607 struct qedi_endpoint *ep;
1612 req_sge = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1613 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1614 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1615 text_hdr = (struct iscsi_text *)task->hdr;
1618 tid = qedi_get_task_idx(qedi);
1623 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
1625 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
1627 qedi_cmd->task_id = tid;
1629 memset(&task_params, 0, sizeof(task_params));
1630 memset(&text_request_pdu_header, 0, sizeof(text_request_pdu_header));
1631 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1632 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1634 /* Update header info */
1635 text_request_pdu_header.opcode = text_hdr->opcode;
1636 text_request_pdu_header.flags_attr = text_hdr->flags;
1638 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1639 text_request_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1640 text_request_pdu_header.ttt = text_hdr->ttt;
1641 text_request_pdu_header.cmd_sn = be32_to_cpu(text_hdr->cmdsn);
1642 text_request_pdu_header.exp_stat_sn = be32_to_cpu(text_hdr->exp_statsn);
1643 text_request_pdu_header.hdr_second_dword = ntoh24(text_hdr->dlength);
1645 /* Fill tx AHS and rx buffer */
1646 tx_sgl_task_params.sgl =
1647 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1648 tx_sgl_task_params.sgl_phys_addr.lo =
1649 (u32)(qedi_conn->gen_pdu.req_dma_addr);
1650 tx_sgl_task_params.sgl_phys_addr.hi =
1651 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
1652 tx_sgl_task_params.total_buffer_size = req_sge->sge_len;
1653 tx_sgl_task_params.num_sges = 1;
1655 rx_sgl_task_params.sgl =
1656 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1657 rx_sgl_task_params.sgl_phys_addr.lo =
1658 (u32)(qedi_conn->gen_pdu.resp_dma_addr);
1659 rx_sgl_task_params.sgl_phys_addr.hi =
1660 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
1661 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len;
1662 rx_sgl_task_params.num_sges = 1;
1664 /* Fill fw input params */
1665 task_params.context = fw_task_ctx;
1666 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1667 task_params.itid = tid;
1668 task_params.cq_rss_number = 0;
1669 task_params.tx_io_size = ntoh24(text_hdr->dlength);
1670 task_params.rx_io_size = resp_sge->sge_len;
1672 sq_idx = qedi_get_wqe_idx(qedi_conn);
1673 task_params.sqe = &ep->sq[sq_idx];
1675 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1676 rval = init_initiator_text_request_task(&task_params,
1677 &text_request_pdu_header,
1678 &tx_sgl_task_params,
1679 &rx_sgl_task_params);
1683 spin_lock(&qedi_conn->list_lock);
1684 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1685 qedi_cmd->io_cmd_in_list = true;
1686 qedi_conn->active_cmd_count++;
1687 spin_unlock(&qedi_conn->list_lock);
1689 qedi_ring_doorbell(qedi_conn);
1693 int qedi_send_iscsi_nopout(struct qedi_conn *qedi_conn,
1694 struct iscsi_task *task,
1695 char *datap, int data_len, int unsol)
1697 struct iscsi_nop_out_hdr nop_out_pdu_header;
1698 struct scsi_sgl_task_params tx_sgl_task_params;
1699 struct scsi_sgl_task_params rx_sgl_task_params;
1700 struct iscsi_task_params task_params;
1701 struct qedi_ctx *qedi = qedi_conn->qedi;
1702 struct e4_iscsi_task_context *fw_task_ctx;
1703 struct iscsi_nopout *nopout_hdr;
1704 struct scsi_sge *resp_sge = NULL;
1705 struct qedi_cmd *qedi_cmd;
1706 struct qedi_endpoint *ep;
1712 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1713 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1714 nopout_hdr = (struct iscsi_nopout *)task->hdr;
1717 tid = qedi_get_task_idx(qedi);
1722 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
1724 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
1726 qedi_cmd->task_id = tid;
1728 memset(&task_params, 0, sizeof(task_params));
1729 memset(&nop_out_pdu_header, 0, sizeof(nop_out_pdu_header));
1730 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1731 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1733 /* Update header info */
1734 nop_out_pdu_header.opcode = nopout_hdr->opcode;
1735 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_CONST1, 1);
1736 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_RSRV, 0);
1738 memcpy(scsi_lun, &nopout_hdr->lun, sizeof(struct scsi_lun));
1739 nop_out_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]);
1740 nop_out_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]);
1741 nop_out_pdu_header.cmd_sn = be32_to_cpu(nopout_hdr->cmdsn);
1742 nop_out_pdu_header.exp_stat_sn = be32_to_cpu(nopout_hdr->exp_statsn);
1744 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1746 if (nopout_hdr->ttt != ISCSI_TTT_ALL_ONES) {
1747 nop_out_pdu_header.itt = be32_to_cpu(nopout_hdr->itt);
1748 nop_out_pdu_header.ttt = be32_to_cpu(nopout_hdr->ttt);
1750 nop_out_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1751 nop_out_pdu_header.ttt = ISCSI_TTT_ALL_ONES;
1753 spin_lock(&qedi_conn->list_lock);
1754 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1755 qedi_cmd->io_cmd_in_list = true;
1756 qedi_conn->active_cmd_count++;
1757 spin_unlock(&qedi_conn->list_lock);
1760 /* Fill tx AHS and rx buffer */
1762 tx_sgl_task_params.sgl =
1763 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1764 tx_sgl_task_params.sgl_phys_addr.lo =
1765 (u32)(qedi_conn->gen_pdu.req_dma_addr);
1766 tx_sgl_task_params.sgl_phys_addr.hi =
1767 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
1768 tx_sgl_task_params.total_buffer_size = data_len;
1769 tx_sgl_task_params.num_sges = 1;
1771 rx_sgl_task_params.sgl =
1772 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1773 rx_sgl_task_params.sgl_phys_addr.lo =
1774 (u32)(qedi_conn->gen_pdu.resp_dma_addr);
1775 rx_sgl_task_params.sgl_phys_addr.hi =
1776 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
1777 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len;
1778 rx_sgl_task_params.num_sges = 1;
1781 /* Fill fw input params */
1782 task_params.context = fw_task_ctx;
1783 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1784 task_params.itid = tid;
1785 task_params.cq_rss_number = 0;
1786 task_params.tx_io_size = data_len;
1787 task_params.rx_io_size = resp_sge->sge_len;
1789 sq_idx = qedi_get_wqe_idx(qedi_conn);
1790 task_params.sqe = &ep->sq[sq_idx];
1792 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1793 rval = init_initiator_nop_out_task(&task_params,
1794 &nop_out_pdu_header,
1795 &tx_sgl_task_params,
1796 &rx_sgl_task_params);
1800 qedi_ring_doorbell(qedi_conn);
1804 static int qedi_split_bd(struct qedi_cmd *cmd, u64 addr, int sg_len,
1807 struct scsi_sge *bd = cmd->io_tbl.sge_tbl;
1808 int frag_size, sg_frags;
1813 if (addr % QEDI_PAGE_SIZE)
1815 (QEDI_PAGE_SIZE - (addr % QEDI_PAGE_SIZE));
1817 frag_size = (sg_len > QEDI_BD_SPLIT_SZ) ? 0 :
1818 (sg_len % QEDI_BD_SPLIT_SZ);
1821 frag_size = QEDI_BD_SPLIT_SZ;
1823 bd[bd_index + sg_frags].sge_addr.lo = (addr & 0xffffffff);
1824 bd[bd_index + sg_frags].sge_addr.hi = (addr >> 32);
1825 bd[bd_index + sg_frags].sge_len = (u16)frag_size;
1826 QEDI_INFO(&cmd->conn->qedi->dbg_ctx, QEDI_LOG_IO,
1827 "split sge %d: addr=%llx, len=%x",
1828 (bd_index + sg_frags), addr, frag_size);
1830 addr += (u64)frag_size;
1832 sg_len -= frag_size;
1837 static int qedi_map_scsi_sg(struct qedi_ctx *qedi, struct qedi_cmd *cmd)
1839 struct scsi_cmnd *sc = cmd->scsi_cmd;
1840 struct scsi_sge *bd = cmd->io_tbl.sge_tbl;
1841 struct scatterlist *sg;
1850 WARN_ON(scsi_sg_count(sc) > QEDI_ISCSI_MAX_BDS_PER_CMD);
1852 sg_count = dma_map_sg(&qedi->pdev->dev, scsi_sglist(sc),
1853 scsi_sg_count(sc), sc->sc_data_direction);
1856 * New condition to send single SGE as cached-SGL.
1857 * Single SGE with length less than 64K.
1859 sg = scsi_sglist(sc);
1860 if ((sg_count == 1) && (sg_dma_len(sg) <= MAX_SGLEN_FOR_CACHESGL)) {
1861 sg_len = sg_dma_len(sg);
1862 addr = (u64)sg_dma_address(sg);
1864 bd[bd_count].sge_addr.lo = (addr & 0xffffffff);
1865 bd[bd_count].sge_addr.hi = (addr >> 32);
1866 bd[bd_count].sge_len = (u16)sg_len;
1868 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1869 "single-cached-sgl: bd_count:%d addr=%llx, len=%x",
1870 sg_count, addr, sg_len);
1875 scsi_for_each_sg(sc, sg, sg_count, i) {
1876 sg_len = sg_dma_len(sg);
1877 addr = (u64)sg_dma_address(sg);
1878 end_addr = (addr + sg_len);
1881 * first sg elem in the 'list',
1882 * check if end addr is page-aligned.
1884 if ((i == 0) && (sg_count > 1) && (end_addr % QEDI_PAGE_SIZE))
1885 cmd->use_slowpath = true;
1888 * last sg elem in the 'list',
1889 * check if start addr is page-aligned.
1891 else if ((i == (sg_count - 1)) &&
1892 (sg_count > 1) && (addr % QEDI_PAGE_SIZE))
1893 cmd->use_slowpath = true;
1896 * middle sg elements in list,
1897 * check if start and end addr is page-aligned
1899 else if ((i != 0) && (i != (sg_count - 1)) &&
1900 ((addr % QEDI_PAGE_SIZE) ||
1901 (end_addr % QEDI_PAGE_SIZE)))
1902 cmd->use_slowpath = true;
1904 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "sg[%d] size=0x%x",
1907 if (sg_len > QEDI_BD_SPLIT_SZ) {
1908 sg_frags = qedi_split_bd(cmd, addr, sg_len, bd_count);
1911 bd[bd_count].sge_addr.lo = addr & 0xffffffff;
1912 bd[bd_count].sge_addr.hi = addr >> 32;
1913 bd[bd_count].sge_len = sg_len;
1915 byte_count += sg_len;
1916 bd_count += sg_frags;
1919 if (byte_count != scsi_bufflen(sc))
1920 QEDI_ERR(&qedi->dbg_ctx,
1921 "byte_count = %d != scsi_bufflen = %d\n", byte_count,
1924 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "byte_count = %d\n",
1927 WARN_ON(byte_count != scsi_bufflen(sc));
1932 static void qedi_iscsi_map_sg_list(struct qedi_cmd *cmd)
1935 struct scsi_cmnd *sc = cmd->scsi_cmd;
1937 if (scsi_sg_count(sc)) {
1938 bd_count = qedi_map_scsi_sg(cmd->conn->qedi, cmd);
1942 struct scsi_sge *bd = cmd->io_tbl.sge_tbl;
1944 bd[0].sge_addr.lo = 0;
1945 bd[0].sge_addr.hi = 0;
1949 cmd->io_tbl.sge_valid = bd_count;
1952 static void qedi_cpy_scsi_cdb(struct scsi_cmnd *sc, u32 *dstp)
1958 lpcnt = sc->cmd_len / sizeof(dword);
1959 srcp = (u8 *)sc->cmnd;
1961 memcpy(&dword, (const void *)srcp, 4);
1962 *dstp = cpu_to_be32(dword);
1966 if (sc->cmd_len & 0x3) {
1967 dword = (u32)srcp[0] | ((u32)srcp[1] << 8);
1968 *dstp = cpu_to_be32(dword);
1972 void qedi_trace_io(struct qedi_ctx *qedi, struct iscsi_task *task,
1973 u16 tid, int8_t direction)
1975 struct qedi_io_log *io_log;
1976 struct iscsi_conn *conn = task->conn;
1977 struct qedi_conn *qedi_conn = conn->dd_data;
1978 struct scsi_cmnd *sc_cmd = task->sc;
1979 unsigned long flags;
1981 spin_lock_irqsave(&qedi->io_trace_lock, flags);
1983 io_log = &qedi->io_trace_buf[qedi->io_trace_idx];
1984 io_log->direction = direction;
1985 io_log->task_id = tid;
1986 io_log->cid = qedi_conn->iscsi_conn_id;
1987 io_log->lun = sc_cmd->device->lun;
1988 io_log->op = sc_cmd->cmnd[0];
1989 io_log->lba[0] = sc_cmd->cmnd[2];
1990 io_log->lba[1] = sc_cmd->cmnd[3];
1991 io_log->lba[2] = sc_cmd->cmnd[4];
1992 io_log->lba[3] = sc_cmd->cmnd[5];
1993 io_log->bufflen = scsi_bufflen(sc_cmd);
1994 io_log->sg_count = scsi_sg_count(sc_cmd);
1995 io_log->fast_sgs = qedi->fast_sgls;
1996 io_log->cached_sgs = qedi->cached_sgls;
1997 io_log->slow_sgs = qedi->slow_sgls;
1998 io_log->cached_sge = qedi->use_cached_sge;
1999 io_log->slow_sge = qedi->use_slow_sge;
2000 io_log->fast_sge = qedi->use_fast_sge;
2001 io_log->result = sc_cmd->result;
2002 io_log->jiffies = jiffies;
2003 io_log->blk_req_cpu = smp_processor_id();
2005 if (direction == QEDI_IO_TRACE_REQ) {
2006 /* For requests we only care about the submission CPU */
2007 io_log->req_cpu = smp_processor_id() % qedi->num_queues;
2008 io_log->intr_cpu = 0;
2009 io_log->blk_rsp_cpu = 0;
2010 } else if (direction == QEDI_IO_TRACE_RSP) {
2011 io_log->req_cpu = smp_processor_id() % qedi->num_queues;
2012 io_log->intr_cpu = qedi->intr_cpu;
2013 io_log->blk_rsp_cpu = smp_processor_id();
2016 qedi->io_trace_idx++;
2017 if (qedi->io_trace_idx == QEDI_IO_TRACE_SIZE)
2018 qedi->io_trace_idx = 0;
2020 qedi->use_cached_sge = false;
2021 qedi->use_slow_sge = false;
2022 qedi->use_fast_sge = false;
2024 spin_unlock_irqrestore(&qedi->io_trace_lock, flags);
2027 int qedi_iscsi_send_ioreq(struct iscsi_task *task)
2029 struct iscsi_conn *conn = task->conn;
2030 struct iscsi_session *session = conn->session;
2031 struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session);
2032 struct qedi_ctx *qedi = iscsi_host_priv(shost);
2033 struct qedi_conn *qedi_conn = conn->dd_data;
2034 struct qedi_cmd *cmd = task->dd_data;
2035 struct scsi_cmnd *sc = task->sc;
2036 struct iscsi_cmd_hdr cmd_pdu_header;
2037 struct scsi_sgl_task_params tx_sgl_task_params;
2038 struct scsi_sgl_task_params rx_sgl_task_params;
2039 struct scsi_sgl_task_params *prx_sgl = NULL;
2040 struct scsi_sgl_task_params *ptx_sgl = NULL;
2041 struct iscsi_task_params task_params;
2042 struct iscsi_conn_params conn_params;
2043 struct scsi_initiator_cmd_params cmd_params;
2044 struct e4_iscsi_task_context *fw_task_ctx;
2045 struct iscsi_cls_conn *cls_conn;
2046 struct iscsi_scsi_req *hdr = (struct iscsi_scsi_req *)task->hdr;
2047 enum iscsi_task_type task_type = MAX_ISCSI_TASK_TYPE;
2048 struct qedi_endpoint *ep;
2056 cls_conn = qedi_conn->cls_conn;
2057 conn = cls_conn->dd_data;
2059 qedi_iscsi_map_sg_list(cmd);
2060 int_to_scsilun(sc->device->lun, (struct scsi_lun *)scsi_lun);
2062 tid = qedi_get_task_idx(qedi);
2067 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
2069 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
2073 memset(&task_params, 0, sizeof(task_params));
2074 memset(&cmd_pdu_header, 0, sizeof(cmd_pdu_header));
2075 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
2076 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
2077 memset(&conn_params, 0, sizeof(conn_params));
2078 memset(&cmd_params, 0, sizeof(cmd_params));
2080 cq_idx = smp_processor_id() % qedi->num_queues;
2081 /* Update header info */
2082 SET_FIELD(cmd_pdu_header.flags_attr, ISCSI_CMD_HDR_ATTR,
2084 if (hdr->cdb[0] != TEST_UNIT_READY) {
2085 if (sc->sc_data_direction == DMA_TO_DEVICE) {
2086 SET_FIELD(cmd_pdu_header.flags_attr,
2087 ISCSI_CMD_HDR_WRITE, 1);
2088 task_type = ISCSI_TASK_TYPE_INITIATOR_WRITE;
2090 SET_FIELD(cmd_pdu_header.flags_attr,
2091 ISCSI_CMD_HDR_READ, 1);
2092 task_type = ISCSI_TASK_TYPE_INITIATOR_READ;
2096 cmd_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]);
2097 cmd_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]);
2099 qedi_update_itt_map(qedi, tid, task->itt, cmd);
2100 cmd_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
2101 cmd_pdu_header.expected_transfer_length = cpu_to_be32(hdr->data_length);
2102 cmd_pdu_header.hdr_second_dword = ntoh24(hdr->dlength);
2103 cmd_pdu_header.cmd_sn = be32_to_cpu(hdr->cmdsn);
2104 cmd_pdu_header.hdr_first_byte = hdr->opcode;
2105 qedi_cpy_scsi_cdb(sc, (u32 *)cmd_pdu_header.cdb);
2107 /* Fill tx AHS and rx buffer */
2108 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) {
2109 tx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl;
2110 tx_sgl_task_params.sgl_phys_addr.lo =
2111 (u32)(cmd->io_tbl.sge_tbl_dma);
2112 tx_sgl_task_params.sgl_phys_addr.hi =
2113 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32);
2114 tx_sgl_task_params.total_buffer_size = scsi_bufflen(sc);
2115 tx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid;
2116 if (cmd->use_slowpath)
2117 tx_sgl_task_params.small_mid_sge = true;
2118 } else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) {
2119 rx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl;
2120 rx_sgl_task_params.sgl_phys_addr.lo =
2121 (u32)(cmd->io_tbl.sge_tbl_dma);
2122 rx_sgl_task_params.sgl_phys_addr.hi =
2123 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32);
2124 rx_sgl_task_params.total_buffer_size = scsi_bufflen(sc);
2125 rx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid;
2128 /* Add conn param */
2129 conn_params.first_burst_length = conn->session->first_burst;
2130 conn_params.max_send_pdu_length = conn->max_xmit_dlength;
2131 conn_params.max_burst_length = conn->session->max_burst;
2132 if (conn->session->initial_r2t_en)
2133 conn_params.initial_r2t = true;
2134 if (conn->session->imm_data_en)
2135 conn_params.immediate_data = true;
2137 /* Add cmd params */
2138 cmd_params.sense_data_buffer_phys_addr.lo = (u32)cmd->sense_buffer_dma;
2139 cmd_params.sense_data_buffer_phys_addr.hi =
2140 (u32)((u64)cmd->sense_buffer_dma >> 32);
2141 /* Fill fw input params */
2142 task_params.context = fw_task_ctx;
2143 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
2144 task_params.itid = tid;
2145 task_params.cq_rss_number = cq_idx;
2146 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE)
2147 task_params.tx_io_size = scsi_bufflen(sc);
2148 else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ)
2149 task_params.rx_io_size = scsi_bufflen(sc);
2151 sq_idx = qedi_get_wqe_idx(qedi_conn);
2152 task_params.sqe = &ep->sq[sq_idx];
2154 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
2155 "%s: %s-SGL: sg_len=0x%x num_sges=0x%x first-sge-lo=0x%x first-sge-hi=0x%x\n",
2156 (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) ?
2157 "Write " : "Read ", (cmd->io_tbl.sge_valid == 1) ?
2158 "Single" : (cmd->use_slowpath ? "SLOW" : "FAST"),
2159 (u16)cmd->io_tbl.sge_valid, scsi_bufflen(sc),
2160 (u32)(cmd->io_tbl.sge_tbl_dma),
2161 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32));
2163 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
2165 if (task_params.tx_io_size != 0)
2166 ptx_sgl = &tx_sgl_task_params;
2167 if (task_params.rx_io_size != 0)
2168 prx_sgl = &rx_sgl_task_params;
2170 rval = init_initiator_rw_iscsi_task(&task_params, &conn_params,
2171 &cmd_params, &cmd_pdu_header,
2177 spin_lock(&qedi_conn->list_lock);
2178 list_add_tail(&cmd->io_cmd, &qedi_conn->active_cmd_list);
2179 cmd->io_cmd_in_list = true;
2180 qedi_conn->active_cmd_count++;
2181 spin_unlock(&qedi_conn->list_lock);
2183 qedi_ring_doorbell(qedi_conn);
2187 int qedi_iscsi_cleanup_task(struct iscsi_task *task, bool mark_cmd_node_deleted)
2189 struct iscsi_task_params task_params;
2190 struct qedi_endpoint *ep;
2191 struct iscsi_conn *conn = task->conn;
2192 struct qedi_conn *qedi_conn = conn->dd_data;
2193 struct qedi_cmd *cmd = task->dd_data;
2197 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
2198 "issue cleanup tid=0x%x itt=0x%x task_state=%d cmd_state=0%x cid=0x%x\n",
2199 cmd->task_id, get_itt(task->itt), task->state,
2200 cmd->state, qedi_conn->iscsi_conn_id);
2202 memset(&task_params, 0, sizeof(task_params));
2205 sq_idx = qedi_get_wqe_idx(qedi_conn);
2207 task_params.sqe = &ep->sq[sq_idx];
2208 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
2209 task_params.itid = cmd->task_id;
2211 rval = init_cleanup_task(&task_params);
2215 qedi_ring_doorbell(qedi_conn);