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 e4_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;
160 set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
161 resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf;
163 iscsi_block_session(session->cls_session);
164 rval = qedi_cleanup_all_io(qedi, qedi_conn, qedi_cmd->task, true);
166 qedi_clear_task_idx(qedi, qedi_cmd->task_id);
167 iscsi_unblock_session(session->cls_session);
171 iscsi_unblock_session(session->cls_session);
172 qedi_clear_task_idx(qedi, qedi_cmd->task_id);
174 spin_lock(&session->back_lock);
175 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0);
176 spin_unlock(&session->back_lock);
180 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
183 static void qedi_process_tmf_resp(struct qedi_ctx *qedi,
184 union iscsi_cqe *cqe,
185 struct iscsi_task *task,
186 struct qedi_conn *qedi_conn)
189 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
190 struct iscsi_session *session = conn->session;
191 struct iscsi_tmf_response_hdr *cqe_tmp_response;
192 struct iscsi_tm_rsp *resp_hdr_ptr;
193 struct iscsi_tm *tmf_hdr;
194 struct qedi_cmd *qedi_cmd = NULL;
196 cqe_tmp_response = &cqe->cqe_common.iscsi_hdr.tmf_response;
198 qedi_cmd = task->dd_data;
199 qedi_cmd->tmf_resp_buf = kzalloc(sizeof(*resp_hdr_ptr), GFP_ATOMIC);
200 if (!qedi_cmd->tmf_resp_buf) {
201 QEDI_ERR(&qedi->dbg_ctx,
202 "Failed to allocate resp buf, cid=0x%x\n",
203 qedi_conn->iscsi_conn_id);
207 spin_lock(&session->back_lock);
208 resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf;
209 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_tm_rsp));
211 /* Fill up the header */
212 resp_hdr_ptr->opcode = cqe_tmp_response->opcode;
213 resp_hdr_ptr->flags = cqe_tmp_response->hdr_flags;
214 resp_hdr_ptr->response = cqe_tmp_response->hdr_response;
215 resp_hdr_ptr->hlength = 0;
217 hton24(resp_hdr_ptr->dlength,
218 (cqe_tmp_response->hdr_second_dword &
219 ISCSI_TMF_RESPONSE_HDR_DATA_SEG_LEN_MASK));
220 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid,
222 resp_hdr_ptr->statsn = cpu_to_be32(cqe_tmp_response->stat_sn);
223 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_tmp_response->exp_cmd_sn);
224 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_tmp_response->max_cmd_sn);
226 tmf_hdr = (struct iscsi_tm *)qedi_cmd->task->hdr;
228 if (likely(qedi_cmd->io_cmd_in_list)) {
229 qedi_cmd->io_cmd_in_list = false;
230 list_del_init(&qedi_cmd->io_cmd);
231 qedi_conn->active_cmd_count--;
234 if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
235 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) ||
236 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
237 ISCSI_TM_FUNC_TARGET_WARM_RESET) ||
238 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
239 ISCSI_TM_FUNC_TARGET_COLD_RESET)) {
240 INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_resp_work);
241 queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work);
245 qedi_clear_task_idx(qedi, qedi_cmd->task_id);
247 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0);
251 spin_unlock(&session->back_lock);
254 static void qedi_process_login_resp(struct qedi_ctx *qedi,
255 union iscsi_cqe *cqe,
256 struct iscsi_task *task,
257 struct qedi_conn *qedi_conn)
259 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
260 struct iscsi_session *session = conn->session;
261 struct e4_iscsi_task_context *task_ctx;
262 struct iscsi_login_rsp *resp_hdr_ptr;
263 struct iscsi_login_response_hdr *cqe_login_response;
264 struct qedi_cmd *cmd;
267 cmd = (struct qedi_cmd *)task->dd_data;
269 cqe_login_response = &cqe->cqe_common.iscsi_hdr.login_response;
270 task_ctx = qedi_get_task_mem(&qedi->tasks, cmd->task_id);
272 spin_lock(&session->back_lock);
273 resp_hdr_ptr = (struct iscsi_login_rsp *)&qedi_conn->gen_pdu.resp_hdr;
274 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_login_rsp));
275 resp_hdr_ptr->opcode = cqe_login_response->opcode;
276 resp_hdr_ptr->flags = cqe_login_response->flags_attr;
277 resp_hdr_ptr->hlength = 0;
279 hton24(resp_hdr_ptr->dlength,
280 (cqe_login_response->hdr_second_dword &
281 ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK));
282 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid,
284 resp_hdr_ptr->tsih = cqe_login_response->tsih;
285 resp_hdr_ptr->statsn = cpu_to_be32(cqe_login_response->stat_sn);
286 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_login_response->exp_cmd_sn);
287 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_login_response->max_cmd_sn);
288 resp_hdr_ptr->status_class = cqe_login_response->status_class;
289 resp_hdr_ptr->status_detail = cqe_login_response->status_detail;
290 pld_len = cqe_login_response->hdr_second_dword &
291 ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK;
292 qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len;
294 if (likely(cmd->io_cmd_in_list)) {
295 cmd->io_cmd_in_list = false;
296 list_del_init(&cmd->io_cmd);
297 qedi_conn->active_cmd_count--;
300 memset(task_ctx, '\0', sizeof(*task_ctx));
302 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr,
303 qedi_conn->gen_pdu.resp_buf,
304 (qedi_conn->gen_pdu.resp_wr_ptr -
305 qedi_conn->gen_pdu.resp_buf));
307 spin_unlock(&session->back_lock);
308 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
309 "Freeing tid=0x%x for cid=0x%x\n",
310 cmd->task_id, qedi_conn->iscsi_conn_id);
311 cmd->state = RESPONSE_RECEIVED;
312 qedi_clear_task_idx(qedi, cmd->task_id);
315 static void qedi_get_rq_bdq_buf(struct qedi_ctx *qedi,
316 struct iscsi_cqe_unsolicited *cqe,
321 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
322 "pld_len [%d], bdq_prod_idx [%d], idx [%d]\n",
323 len, qedi->bdq_prod_idx,
324 (qedi->bdq_prod_idx % qedi->rq_num_entries));
326 /* Obtain buffer address from rqe_opaque */
327 idx = cqe->rqe_opaque;
328 if (idx > (QEDI_BDQ_NUM - 1)) {
329 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
330 "wrong idx %d returned by FW, dropping the unsolicited pkt\n",
335 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
336 "rqe_opaque [0x%p], idx [%d]\n", cqe->rqe_opaque, idx);
338 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
339 "unsol_cqe_type = %d\n", cqe->unsol_cqe_type);
340 switch (cqe->unsol_cqe_type) {
341 case ISCSI_CQE_UNSOLICITED_SINGLE:
342 case ISCSI_CQE_UNSOLICITED_FIRST:
344 memcpy(ptr, (void *)qedi->bdq[idx].buf_addr, len);
346 case ISCSI_CQE_UNSOLICITED_MIDDLE:
347 case ISCSI_CQE_UNSOLICITED_LAST:
354 static void qedi_put_rq_bdq_buf(struct qedi_ctx *qedi,
355 struct iscsi_cqe_unsolicited *cqe,
362 /* Obtain buffer address from rqe_opaque */
363 idx = cqe->rqe_opaque;
364 if (idx > (QEDI_BDQ_NUM - 1)) {
365 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
366 "wrong idx %d returned by FW, dropping the unsolicited pkt\n",
371 pbl = (struct scsi_bd *)qedi->bdq_pbl;
372 pbl += (qedi->bdq_prod_idx % qedi->rq_num_entries);
373 pbl->address.hi = cpu_to_le32(QEDI_U64_HI(qedi->bdq[idx].buf_dma));
374 pbl->address.lo = cpu_to_le32(QEDI_U64_LO(qedi->bdq[idx].buf_dma));
375 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
376 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx] idx [%d]\n",
377 pbl, pbl->address.hi, pbl->address.lo, idx);
378 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0;
379 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0;
380 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0;
381 pbl->opaque.iscsi_opaque.opaque = cpu_to_le32(idx);
383 /* Increment producer to let f/w know we've handled the frame */
384 qedi->bdq_prod_idx += count;
386 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);
387 tmp = readw(qedi->bdq_primary_prod);
389 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
390 tmp = readw(qedi->bdq_secondary_prod);
393 static void qedi_unsol_pdu_adjust_bdq(struct qedi_ctx *qedi,
394 struct iscsi_cqe_unsolicited *cqe,
395 u32 pdu_len, u32 num_bdqs,
398 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
399 "num_bdqs [%d]\n", num_bdqs);
401 qedi_get_rq_bdq_buf(qedi, cqe, bdq_data, pdu_len);
402 qedi_put_rq_bdq_buf(qedi, cqe, (num_bdqs + 1));
405 static int qedi_process_nopin_mesg(struct qedi_ctx *qedi,
406 union iscsi_cqe *cqe,
407 struct iscsi_task *task,
408 struct qedi_conn *qedi_conn, u16 que_idx)
410 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
411 struct iscsi_session *session = conn->session;
412 struct iscsi_nop_in_hdr *cqe_nop_in;
413 struct iscsi_nopin *hdr;
414 struct qedi_cmd *cmd;
415 int tgt_async_nop = 0;
417 u32 pdu_len, num_bdqs;
418 char bdq_data[QEDI_BDQ_BUF_SIZE];
421 spin_lock_bh(&session->back_lock);
422 cqe_nop_in = &cqe->cqe_common.iscsi_hdr.nop_in;
424 pdu_len = cqe_nop_in->hdr_second_dword &
425 ISCSI_NOP_IN_HDR_DATA_SEG_LEN_MASK;
426 num_bdqs = pdu_len / QEDI_BDQ_BUF_SIZE;
428 hdr = (struct iscsi_nopin *)&qedi_conn->gen_pdu.resp_hdr;
429 memset(hdr, 0, sizeof(struct iscsi_hdr));
430 hdr->opcode = cqe_nop_in->opcode;
431 hdr->max_cmdsn = cpu_to_be32(cqe_nop_in->max_cmd_sn);
432 hdr->exp_cmdsn = cpu_to_be32(cqe_nop_in->exp_cmd_sn);
433 hdr->statsn = cpu_to_be32(cqe_nop_in->stat_sn);
434 hdr->ttt = cpu_to_be32(cqe_nop_in->ttt);
436 if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) {
437 spin_lock_irqsave(&qedi->hba_lock, flags);
438 qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited,
439 pdu_len, num_bdqs, bdq_data);
440 hdr->itt = RESERVED_ITT;
442 spin_unlock_irqrestore(&qedi->hba_lock, flags);
446 /* Response to one of our nop-outs */
449 hdr->flags = ISCSI_FLAG_CMD_FINAL;
450 hdr->itt = build_itt(cqe->cqe_solicited.itid,
454 memcpy(&hdr->lun, lun, sizeof(struct scsi_lun));
455 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
456 "Freeing tid=0x%x for cid=0x%x\n",
457 cmd->task_id, qedi_conn->iscsi_conn_id);
458 cmd->state = RESPONSE_RECEIVED;
459 spin_lock(&qedi_conn->list_lock);
460 if (likely(cmd->io_cmd_in_list)) {
461 cmd->io_cmd_in_list = false;
462 list_del_init(&cmd->io_cmd);
463 qedi_conn->active_cmd_count--;
466 spin_unlock(&qedi_conn->list_lock);
467 qedi_clear_task_idx(qedi, cmd->task_id);
471 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, bdq_data, pdu_len);
473 spin_unlock_bh(&session->back_lock);
474 return tgt_async_nop;
477 static void qedi_process_async_mesg(struct qedi_ctx *qedi,
478 union iscsi_cqe *cqe,
479 struct iscsi_task *task,
480 struct qedi_conn *qedi_conn,
483 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
484 struct iscsi_session *session = conn->session;
485 struct iscsi_async_msg_hdr *cqe_async_msg;
486 struct iscsi_async *resp_hdr;
488 u32 pdu_len, num_bdqs;
489 char bdq_data[QEDI_BDQ_BUF_SIZE];
492 spin_lock_bh(&session->back_lock);
494 cqe_async_msg = &cqe->cqe_common.iscsi_hdr.async_msg;
495 pdu_len = cqe_async_msg->hdr_second_dword &
496 ISCSI_ASYNC_MSG_HDR_DATA_SEG_LEN_MASK;
497 num_bdqs = pdu_len / QEDI_BDQ_BUF_SIZE;
499 if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) {
500 spin_lock_irqsave(&qedi->hba_lock, flags);
501 qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited,
502 pdu_len, num_bdqs, bdq_data);
503 spin_unlock_irqrestore(&qedi->hba_lock, flags);
506 resp_hdr = (struct iscsi_async *)&qedi_conn->gen_pdu.resp_hdr;
507 memset(resp_hdr, 0, sizeof(struct iscsi_hdr));
508 resp_hdr->opcode = cqe_async_msg->opcode;
509 resp_hdr->flags = 0x80;
511 lun[0] = cpu_to_be32(cqe_async_msg->lun.lo);
512 lun[1] = cpu_to_be32(cqe_async_msg->lun.hi);
513 memcpy(&resp_hdr->lun, lun, sizeof(struct scsi_lun));
514 resp_hdr->exp_cmdsn = cpu_to_be32(cqe_async_msg->exp_cmd_sn);
515 resp_hdr->max_cmdsn = cpu_to_be32(cqe_async_msg->max_cmd_sn);
516 resp_hdr->statsn = cpu_to_be32(cqe_async_msg->stat_sn);
518 resp_hdr->async_event = cqe_async_msg->async_event;
519 resp_hdr->async_vcode = cqe_async_msg->async_vcode;
521 resp_hdr->param1 = cpu_to_be16(cqe_async_msg->param1_rsrv);
522 resp_hdr->param2 = cpu_to_be16(cqe_async_msg->param2_rsrv);
523 resp_hdr->param3 = cpu_to_be16(cqe_async_msg->param3_rsrv);
525 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, bdq_data,
528 spin_unlock_bh(&session->back_lock);
531 static void qedi_process_reject_mesg(struct qedi_ctx *qedi,
532 union iscsi_cqe *cqe,
533 struct iscsi_task *task,
534 struct qedi_conn *qedi_conn,
537 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
538 struct iscsi_session *session = conn->session;
539 struct iscsi_reject_hdr *cqe_reject;
540 struct iscsi_reject *hdr;
541 u32 pld_len, num_bdqs;
544 spin_lock_bh(&session->back_lock);
545 cqe_reject = &cqe->cqe_common.iscsi_hdr.reject;
546 pld_len = cqe_reject->hdr_second_dword &
547 ISCSI_REJECT_HDR_DATA_SEG_LEN_MASK;
548 num_bdqs = pld_len / QEDI_BDQ_BUF_SIZE;
550 if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) {
551 spin_lock_irqsave(&qedi->hba_lock, flags);
552 qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited,
553 pld_len, num_bdqs, conn->data);
554 spin_unlock_irqrestore(&qedi->hba_lock, flags);
556 hdr = (struct iscsi_reject *)&qedi_conn->gen_pdu.resp_hdr;
557 memset(hdr, 0, sizeof(struct iscsi_hdr));
558 hdr->opcode = cqe_reject->opcode;
559 hdr->reason = cqe_reject->hdr_reason;
560 hdr->flags = cqe_reject->hdr_flags;
561 hton24(hdr->dlength, (cqe_reject->hdr_second_dword &
562 ISCSI_REJECT_HDR_DATA_SEG_LEN_MASK));
563 hdr->max_cmdsn = cpu_to_be32(cqe_reject->max_cmd_sn);
564 hdr->exp_cmdsn = cpu_to_be32(cqe_reject->exp_cmd_sn);
565 hdr->statsn = cpu_to_be32(cqe_reject->stat_sn);
566 hdr->ffffffff = cpu_to_be32(0xffffffff);
568 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr,
569 conn->data, pld_len);
570 spin_unlock_bh(&session->back_lock);
573 static void qedi_scsi_completion(struct qedi_ctx *qedi,
574 union iscsi_cqe *cqe,
575 struct iscsi_task *task,
576 struct iscsi_conn *conn)
578 struct scsi_cmnd *sc_cmd;
579 struct qedi_cmd *cmd = task->dd_data;
580 struct iscsi_session *session = conn->session;
581 struct iscsi_scsi_rsp *hdr;
582 struct iscsi_data_in_hdr *cqe_data_in;
584 struct qedi_conn *qedi_conn;
588 iscsi_cid = cqe->cqe_common.conn_id;
589 qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
591 cqe_data_in = &cqe->cqe_common.iscsi_hdr.data_in;
593 cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits;
595 spin_lock_bh(&session->back_lock);
596 /* get the scsi command */
597 sc_cmd = cmd->scsi_cmd;
600 QEDI_WARN(&qedi->dbg_ctx, "sc_cmd is NULL!\n");
604 if (!sc_cmd->SCp.ptr) {
605 QEDI_WARN(&qedi->dbg_ctx,
606 "SCp.ptr is NULL, returned in another context.\n");
610 if (!sc_cmd->request) {
611 QEDI_WARN(&qedi->dbg_ctx,
612 "sc_cmd->request is NULL, sc_cmd=%p.\n",
617 if (!sc_cmd->request->q) {
618 QEDI_WARN(&qedi->dbg_ctx,
619 "request->q is NULL so request is not valid, sc_cmd=%p.\n",
624 qedi_iscsi_unmap_sg_list(cmd);
626 hdr = (struct iscsi_scsi_rsp *)task->hdr;
627 hdr->opcode = cqe_data_in->opcode;
628 hdr->max_cmdsn = cpu_to_be32(cqe_data_in->max_cmd_sn);
629 hdr->exp_cmdsn = cpu_to_be32(cqe_data_in->exp_cmd_sn);
630 hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age);
631 hdr->response = cqe_data_in->reserved1;
632 hdr->cmd_status = cqe_data_in->status_rsvd;
633 hdr->flags = cqe_data_in->flags;
634 hdr->residual_count = cpu_to_be32(cqe_data_in->residual_count);
636 if (hdr->cmd_status == SAM_STAT_CHECK_CONDITION) {
637 datalen = cqe_data_in->reserved2 &
638 ISCSI_COMMON_HDR_DATA_SEG_LEN_MASK;
639 memcpy((char *)conn->data, (char *)cmd->sense_buffer, datalen);
642 /* If f/w reports data underrun err then set residual to IO transfer
643 * length, set Underrun flag and clear Overrun flag explicitly
645 if (unlikely(cqe_err_bits &&
646 GET_FIELD(cqe_err_bits, CQE_ERROR_BITMAP_UNDER_RUN_ERR))) {
647 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
648 "Under flow itt=0x%x proto flags=0x%x tid=0x%x cid 0x%x fw resid 0x%x sc dlen 0x%x\n",
649 hdr->itt, cqe_data_in->flags, cmd->task_id,
650 qedi_conn->iscsi_conn_id, hdr->residual_count,
651 scsi_bufflen(sc_cmd));
652 hdr->residual_count = cpu_to_be32(scsi_bufflen(sc_cmd));
653 hdr->flags |= ISCSI_FLAG_CMD_UNDERFLOW;
654 hdr->flags &= (~ISCSI_FLAG_CMD_OVERFLOW);
657 spin_lock(&qedi_conn->list_lock);
658 if (likely(cmd->io_cmd_in_list)) {
659 cmd->io_cmd_in_list = false;
660 list_del_init(&cmd->io_cmd);
661 qedi_conn->active_cmd_count--;
663 spin_unlock(&qedi_conn->list_lock);
665 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
666 "Freeing tid=0x%x for cid=0x%x\n",
667 cmd->task_id, qedi_conn->iscsi_conn_id);
668 cmd->state = RESPONSE_RECEIVED;
670 qedi_trace_io(qedi, task, cmd->task_id, QEDI_IO_TRACE_RSP);
672 qedi_clear_task_idx(qedi, cmd->task_id);
673 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr,
674 conn->data, datalen);
676 spin_unlock_bh(&session->back_lock);
679 static void qedi_mtask_completion(struct qedi_ctx *qedi,
680 union iscsi_cqe *cqe,
681 struct iscsi_task *task,
682 struct qedi_conn *conn, uint16_t que_idx)
684 struct iscsi_conn *iscsi_conn;
687 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte;
688 iscsi_conn = conn->cls_conn->dd_data;
690 switch (hdr_opcode) {
691 case ISCSI_OPCODE_SCSI_RESPONSE:
692 case ISCSI_OPCODE_DATA_IN:
693 qedi_scsi_completion(qedi, cqe, task, iscsi_conn);
695 case ISCSI_OPCODE_LOGIN_RESPONSE:
696 qedi_process_login_resp(qedi, cqe, task, conn);
698 case ISCSI_OPCODE_TMF_RESPONSE:
699 qedi_process_tmf_resp(qedi, cqe, task, conn);
701 case ISCSI_OPCODE_TEXT_RESPONSE:
702 qedi_process_text_resp(qedi, cqe, task, conn);
704 case ISCSI_OPCODE_LOGOUT_RESPONSE:
705 qedi_process_logout_resp(qedi, cqe, task, conn);
707 case ISCSI_OPCODE_NOP_IN:
708 qedi_process_nopin_mesg(qedi, cqe, task, conn, que_idx);
711 QEDI_ERR(&qedi->dbg_ctx, "unknown opcode\n");
715 static void qedi_process_nopin_local_cmpl(struct qedi_ctx *qedi,
716 struct iscsi_cqe_solicited *cqe,
717 struct iscsi_task *task,
718 struct qedi_conn *qedi_conn)
720 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
721 struct iscsi_session *session = conn->session;
722 struct qedi_cmd *cmd = task->dd_data;
724 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UNSOL,
725 "itid=0x%x, cmd task id=0x%x\n",
726 cqe->itid, cmd->task_id);
728 cmd->state = RESPONSE_RECEIVED;
729 qedi_clear_task_idx(qedi, cmd->task_id);
731 spin_lock_bh(&session->back_lock);
732 __iscsi_put_task(task);
733 spin_unlock_bh(&session->back_lock);
736 static void qedi_process_cmd_cleanup_resp(struct qedi_ctx *qedi,
737 struct iscsi_cqe_solicited *cqe,
738 struct iscsi_task *task,
739 struct iscsi_conn *conn)
741 struct qedi_work_map *work, *work_tmp;
742 u32 proto_itt = cqe->itid;
746 struct qedi_cmd *qedi_cmd = NULL;
749 struct qedi_conn *qedi_conn;
750 struct qedi_cmd *dbg_cmd;
751 struct iscsi_task *mtask;
752 struct iscsi_tm *tmf_hdr = NULL;
754 iscsi_cid = cqe->conn_id;
755 qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
757 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
758 "icid not found 0x%x\n", cqe->conn_id);
762 /* Based on this itt get the corresponding qedi_cmd */
763 spin_lock_bh(&qedi_conn->tmf_work_lock);
764 list_for_each_entry_safe(work, work_tmp, &qedi_conn->tmf_work_list,
766 if (work->rtid == proto_itt) {
767 /* We found the command */
768 qedi_cmd = work->qedi_cmd;
769 if (!qedi_cmd->list_tmf_work) {
770 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
771 "TMF work not found, cqe->tid=0x%x, cid=0x%x\n",
772 proto_itt, qedi_conn->iscsi_conn_id);
776 mtask = qedi_cmd->task;
777 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
780 list_del_init(&work->list);
782 qedi_cmd->list_tmf_work = NULL;
785 spin_unlock_bh(&qedi_conn->tmf_work_lock);
788 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
789 "TMF work, cqe->tid=0x%x, tmf flags=0x%x, cid=0x%x\n",
790 proto_itt, tmf_hdr->flags, qedi_conn->iscsi_conn_id);
792 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
793 ISCSI_TM_FUNC_ABORT_TASK) {
794 spin_lock_bh(&conn->session->back_lock);
796 protoitt = build_itt(get_itt(tmf_hdr->rtt),
798 task = iscsi_itt_to_task(conn, protoitt);
800 spin_unlock_bh(&conn->session->back_lock);
803 QEDI_NOTICE(&qedi->dbg_ctx,
804 "IO task completed, tmf rtt=0x%x, cid=0x%x\n",
805 get_itt(tmf_hdr->rtt),
806 qedi_conn->iscsi_conn_id);
810 dbg_cmd = task->dd_data;
812 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
813 "Abort tmf rtt=0x%x, i/o itt=0x%x, i/o tid=0x%x, cid=0x%x\n",
814 get_itt(tmf_hdr->rtt), get_itt(task->itt),
815 dbg_cmd->task_id, qedi_conn->iscsi_conn_id);
817 if (qedi_cmd->state == CLEANUP_WAIT_FAILED)
818 qedi_cmd->state = CLEANUP_RECV;
820 qedi_clear_task_idx(qedi_conn->qedi, rtid);
822 spin_lock(&qedi_conn->list_lock);
823 list_del_init(&dbg_cmd->io_cmd);
824 qedi_conn->active_cmd_count--;
825 spin_unlock(&qedi_conn->list_lock);
826 qedi_cmd->state = CLEANUP_RECV;
827 wake_up_interruptible(&qedi_conn->wait_queue);
829 } else if (qedi_conn->cmd_cleanup_req > 0) {
830 spin_lock_bh(&conn->session->back_lock);
831 qedi_get_proto_itt(qedi, cqe->itid, &ptmp_itt);
832 protoitt = build_itt(ptmp_itt, conn->session->age);
833 task = iscsi_itt_to_task(conn, protoitt);
834 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
835 "cleanup io itid=0x%x, protoitt=0x%x, cmd_cleanup_cmpl=%d, cid=0x%x\n",
836 cqe->itid, protoitt, qedi_conn->cmd_cleanup_cmpl,
837 qedi_conn->iscsi_conn_id);
839 spin_unlock_bh(&conn->session->back_lock);
841 QEDI_NOTICE(&qedi->dbg_ctx,
842 "task is null, itid=0x%x, cid=0x%x\n",
843 cqe->itid, qedi_conn->iscsi_conn_id);
846 qedi_conn->cmd_cleanup_cmpl++;
847 wake_up(&qedi_conn->wait_queue);
849 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
850 "Freeing tid=0x%x for cid=0x%x\n",
851 cqe->itid, qedi_conn->iscsi_conn_id);
852 qedi_clear_task_idx(qedi_conn->qedi, cqe->itid);
855 qedi_get_proto_itt(qedi, cqe->itid, &ptmp_itt);
856 protoitt = build_itt(ptmp_itt, conn->session->age);
857 task = iscsi_itt_to_task(conn, protoitt);
858 QEDI_ERR(&qedi->dbg_ctx,
859 "Delayed or untracked cleanup response, itt=0x%x, tid=0x%x, cid=0x%x, task=%p\n",
860 protoitt, cqe->itid, qedi_conn->iscsi_conn_id, task);
864 void qedi_fp_process_cqes(struct qedi_work *work)
866 struct qedi_ctx *qedi = work->qedi;
867 union iscsi_cqe *cqe = &work->cqe;
868 struct iscsi_task *task = NULL;
869 struct iscsi_nopout *nopout_hdr;
870 struct qedi_conn *q_conn;
871 struct iscsi_conn *conn;
872 struct qedi_cmd *qedi_cmd;
876 u16 que_idx = work->que_idx;
879 comp_type = cqe->cqe_common.cqe_type;
880 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte;
882 cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits;
884 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
885 "fw_cid=0x%x, cqe type=0x%x, opcode=0x%x\n",
886 cqe->cqe_common.conn_id, comp_type, hdr_opcode);
888 if (comp_type >= MAX_ISCSI_CQES_TYPE) {
889 QEDI_WARN(&qedi->dbg_ctx, "Invalid CqE type\n");
893 iscsi_cid = cqe->cqe_common.conn_id;
894 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
896 QEDI_WARN(&qedi->dbg_ctx,
897 "Session no longer exists for cid=0x%x!!\n",
902 conn = q_conn->cls_conn->dd_data;
904 if (unlikely(cqe_err_bits &&
905 GET_FIELD(cqe_err_bits,
906 CQE_ERROR_BITMAP_DATA_DIGEST_ERR))) {
907 iscsi_conn_failure(conn, ISCSI_ERR_DATA_DGST);
912 case ISCSI_CQE_TYPE_SOLICITED:
913 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
914 qedi_cmd = container_of(work, struct qedi_cmd, cqe_work);
915 task = qedi_cmd->task;
917 QEDI_WARN(&qedi->dbg_ctx, "task is NULL\n");
921 /* Process NOPIN local completion */
922 nopout_hdr = (struct iscsi_nopout *)task->hdr;
923 if ((nopout_hdr->itt == RESERVED_ITT) &&
924 (cqe->cqe_solicited.itid != (u16)RESERVED_ITT)) {
925 qedi_process_nopin_local_cmpl(qedi, &cqe->cqe_solicited,
928 cqe->cqe_solicited.itid =
929 qedi_get_itt(cqe->cqe_solicited);
930 /* Process other solicited responses */
931 qedi_mtask_completion(qedi, cqe, task, q_conn, que_idx);
934 case ISCSI_CQE_TYPE_UNSOLICITED:
935 switch (hdr_opcode) {
936 case ISCSI_OPCODE_NOP_IN:
937 qedi_process_nopin_mesg(qedi, cqe, task, q_conn,
940 case ISCSI_OPCODE_ASYNC_MSG:
941 qedi_process_async_mesg(qedi, cqe, task, q_conn,
944 case ISCSI_OPCODE_REJECT:
945 qedi_process_reject_mesg(qedi, cqe, task, q_conn,
949 goto exit_fp_process;
950 case ISCSI_CQE_TYPE_DUMMY:
951 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "Dummy CqE\n");
952 goto exit_fp_process;
953 case ISCSI_CQE_TYPE_TASK_CLEANUP:
954 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "CleanUp CqE\n");
955 qedi_process_cmd_cleanup_resp(qedi, &cqe->cqe_solicited, task,
957 goto exit_fp_process;
959 QEDI_ERR(&qedi->dbg_ctx, "Error cqe.\n");
967 static void qedi_ring_doorbell(struct qedi_conn *qedi_conn)
969 struct iscsi_db_data dbell = { 0 };
973 dbell.params |= DB_DEST_XCM << ISCSI_DB_DATA_DEST_SHIFT;
974 dbell.params |= DB_AGG_CMD_SET << ISCSI_DB_DATA_AGG_CMD_SHIFT;
976 DQ_XCM_ISCSI_SQ_PROD_CMD << ISCSI_DB_DATA_AGG_VAL_SEL_SHIFT;
978 dbell.sq_prod = qedi_conn->ep->fw_sq_prod_idx;
979 writel(*(u32 *)&dbell, qedi_conn->ep->p_doorbell);
981 /* Make sure fw write idx is coherent, and include both memory barriers
982 * as a failsafe as for some architectures the call is the same but on
983 * others they are two different assembly operations.
986 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_MP_REQ,
987 "prod_idx=0x%x, fw_prod_idx=0x%x, cid=0x%x\n",
988 qedi_conn->ep->sq_prod_idx, qedi_conn->ep->fw_sq_prod_idx,
989 qedi_conn->iscsi_conn_id);
992 static u16 qedi_get_wqe_idx(struct qedi_conn *qedi_conn)
994 struct qedi_endpoint *ep;
998 rval = ep->sq_prod_idx;
1000 /* Increament SQ index */
1002 ep->fw_sq_prod_idx++;
1003 if (ep->sq_prod_idx == QEDI_SQ_SIZE)
1004 ep->sq_prod_idx = 0;
1009 int qedi_send_iscsi_login(struct qedi_conn *qedi_conn,
1010 struct iscsi_task *task)
1012 struct iscsi_login_req_hdr login_req_pdu_header;
1013 struct scsi_sgl_task_params tx_sgl_task_params;
1014 struct scsi_sgl_task_params rx_sgl_task_params;
1015 struct iscsi_task_params task_params;
1016 struct e4_iscsi_task_context *fw_task_ctx;
1017 struct qedi_ctx *qedi = qedi_conn->qedi;
1018 struct iscsi_login_req *login_hdr;
1019 struct scsi_sge *resp_sge = NULL;
1020 struct qedi_cmd *qedi_cmd;
1021 struct qedi_endpoint *ep;
1026 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1027 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1029 login_hdr = (struct iscsi_login_req *)task->hdr;
1031 tid = qedi_get_task_idx(qedi);
1036 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
1038 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
1040 qedi_cmd->task_id = tid;
1042 memset(&task_params, 0, sizeof(task_params));
1043 memset(&login_req_pdu_header, 0, sizeof(login_req_pdu_header));
1044 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1045 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1046 /* Update header info */
1047 login_req_pdu_header.opcode = login_hdr->opcode;
1048 login_req_pdu_header.version_min = login_hdr->min_version;
1049 login_req_pdu_header.version_max = login_hdr->max_version;
1050 login_req_pdu_header.flags_attr = login_hdr->flags;
1051 login_req_pdu_header.isid_tabc = swab32p((u32 *)login_hdr->isid);
1052 login_req_pdu_header.isid_d = swab16p((u16 *)&login_hdr->isid[4]);
1054 login_req_pdu_header.tsih = login_hdr->tsih;
1055 login_req_pdu_header.hdr_second_dword = ntoh24(login_hdr->dlength);
1057 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1058 login_req_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1059 login_req_pdu_header.cid = qedi_conn->iscsi_conn_id;
1060 login_req_pdu_header.cmd_sn = be32_to_cpu(login_hdr->cmdsn);
1061 login_req_pdu_header.exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn);
1062 login_req_pdu_header.exp_stat_sn = 0;
1064 /* Fill tx AHS and rx buffer */
1065 tx_sgl_task_params.sgl =
1066 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1067 tx_sgl_task_params.sgl_phys_addr.lo =
1068 (u32)(qedi_conn->gen_pdu.req_dma_addr);
1069 tx_sgl_task_params.sgl_phys_addr.hi =
1070 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
1071 tx_sgl_task_params.total_buffer_size = ntoh24(login_hdr->dlength);
1072 tx_sgl_task_params.num_sges = 1;
1074 rx_sgl_task_params.sgl =
1075 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1076 rx_sgl_task_params.sgl_phys_addr.lo =
1077 (u32)(qedi_conn->gen_pdu.resp_dma_addr);
1078 rx_sgl_task_params.sgl_phys_addr.hi =
1079 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
1080 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len;
1081 rx_sgl_task_params.num_sges = 1;
1083 /* Fill fw input params */
1084 task_params.context = fw_task_ctx;
1085 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1086 task_params.itid = tid;
1087 task_params.cq_rss_number = 0;
1088 task_params.tx_io_size = ntoh24(login_hdr->dlength);
1089 task_params.rx_io_size = resp_sge->sge_len;
1091 sq_idx = qedi_get_wqe_idx(qedi_conn);
1092 task_params.sqe = &ep->sq[sq_idx];
1094 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1095 rval = init_initiator_login_request_task(&task_params,
1096 &login_req_pdu_header,
1097 &tx_sgl_task_params,
1098 &rx_sgl_task_params);
1102 spin_lock(&qedi_conn->list_lock);
1103 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1104 qedi_cmd->io_cmd_in_list = true;
1105 qedi_conn->active_cmd_count++;
1106 spin_unlock(&qedi_conn->list_lock);
1108 qedi_ring_doorbell(qedi_conn);
1112 int qedi_send_iscsi_logout(struct qedi_conn *qedi_conn,
1113 struct iscsi_task *task)
1115 struct iscsi_logout_req_hdr logout_pdu_header;
1116 struct scsi_sgl_task_params tx_sgl_task_params;
1117 struct scsi_sgl_task_params rx_sgl_task_params;
1118 struct iscsi_task_params task_params;
1119 struct e4_iscsi_task_context *fw_task_ctx;
1120 struct iscsi_logout *logout_hdr = NULL;
1121 struct qedi_ctx *qedi = qedi_conn->qedi;
1122 struct qedi_cmd *qedi_cmd;
1123 struct qedi_endpoint *ep;
1128 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1129 logout_hdr = (struct iscsi_logout *)task->hdr;
1132 tid = qedi_get_task_idx(qedi);
1137 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
1139 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
1141 qedi_cmd->task_id = tid;
1143 memset(&task_params, 0, sizeof(task_params));
1144 memset(&logout_pdu_header, 0, sizeof(logout_pdu_header));
1145 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1146 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1148 /* Update header info */
1149 logout_pdu_header.opcode = logout_hdr->opcode;
1150 logout_pdu_header.reason_code = 0x80 | logout_hdr->flags;
1151 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1152 logout_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1153 logout_pdu_header.exp_stat_sn = be32_to_cpu(logout_hdr->exp_statsn);
1154 logout_pdu_header.cmd_sn = be32_to_cpu(logout_hdr->cmdsn);
1155 logout_pdu_header.cid = qedi_conn->iscsi_conn_id;
1157 /* Fill fw input params */
1158 task_params.context = fw_task_ctx;
1159 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1160 task_params.itid = tid;
1161 task_params.cq_rss_number = 0;
1162 task_params.tx_io_size = 0;
1163 task_params.rx_io_size = 0;
1165 sq_idx = qedi_get_wqe_idx(qedi_conn);
1166 task_params.sqe = &ep->sq[sq_idx];
1167 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1169 rval = init_initiator_logout_request_task(&task_params,
1175 spin_lock(&qedi_conn->list_lock);
1176 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1177 qedi_cmd->io_cmd_in_list = true;
1178 qedi_conn->active_cmd_count++;
1179 spin_unlock(&qedi_conn->list_lock);
1181 qedi_ring_doorbell(qedi_conn);
1185 int qedi_cleanup_all_io(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn,
1186 struct iscsi_task *task, bool in_recovery)
1189 struct iscsi_task *ctask;
1190 struct qedi_cmd *cmd, *cmd_tmp;
1191 struct iscsi_tm *tmf_hdr;
1192 unsigned int lun = 0;
1193 bool lun_reset = false;
1194 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
1195 struct iscsi_session *session = conn->session;
1197 /* From recovery, task is NULL or from tmf resp valid task */
1199 tmf_hdr = (struct iscsi_tm *)task->hdr;
1201 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1202 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) {
1204 lun = scsilun_to_int(&tmf_hdr->lun);
1208 qedi_conn->cmd_cleanup_req = 0;
1209 qedi_conn->cmd_cleanup_cmpl = 0;
1211 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1212 "active_cmd_count=%d, cid=0x%x, in_recovery=%d, lun_reset=%d\n",
1213 qedi_conn->active_cmd_count, qedi_conn->iscsi_conn_id,
1214 in_recovery, lun_reset);
1217 spin_lock_bh(&session->back_lock);
1219 spin_lock(&qedi_conn->list_lock);
1221 list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list,
1228 if (cmd->scsi_cmd && cmd->scsi_cmd->device) {
1229 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1230 "tid=0x%x itt=0x%x scsi_cmd_ptr=%p device=%p task_state=%d cmd_state=0%x cid=0x%x\n",
1231 cmd->task_id, get_itt(ctask->itt),
1232 cmd->scsi_cmd, cmd->scsi_cmd->device,
1233 ctask->state, cmd->state,
1234 qedi_conn->iscsi_conn_id);
1235 if (cmd->scsi_cmd->device->lun != lun)
1239 qedi_conn->cmd_cleanup_req++;
1240 qedi_iscsi_cleanup_task(ctask, true);
1242 list_del_init(&cmd->io_cmd);
1243 qedi_conn->active_cmd_count--;
1244 QEDI_WARN(&qedi->dbg_ctx,
1245 "Deleted active cmd list node io_cmd=%p, cid=0x%x\n",
1246 &cmd->io_cmd, qedi_conn->iscsi_conn_id);
1249 spin_unlock(&qedi_conn->list_lock);
1252 spin_unlock_bh(&session->back_lock);
1254 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1255 "cmd_cleanup_req=%d, cid=0x%x\n",
1256 qedi_conn->cmd_cleanup_req,
1257 qedi_conn->iscsi_conn_id);
1259 rval = wait_event_interruptible_timeout(qedi_conn->wait_queue,
1260 ((qedi_conn->cmd_cleanup_req ==
1261 qedi_conn->cmd_cleanup_cmpl) ||
1265 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1266 "i/o cmd_cleanup_req=%d, equal to cmd_cleanup_cmpl=%d, cid=0x%x\n",
1267 qedi_conn->cmd_cleanup_req,
1268 qedi_conn->cmd_cleanup_cmpl,
1269 qedi_conn->iscsi_conn_id);
1274 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1275 "i/o cmd_cleanup_req=%d, not equal to cmd_cleanup_cmpl=%d, cid=0x%x\n",
1276 qedi_conn->cmd_cleanup_req,
1277 qedi_conn->cmd_cleanup_cmpl,
1278 qedi_conn->iscsi_conn_id);
1280 iscsi_host_for_each_session(qedi->shost,
1281 qedi_mark_device_missing);
1282 qedi_ops->common->drain(qedi->cdev);
1284 /* Enable IOs for all other sessions except current.*/
1285 if (!wait_event_interruptible_timeout(qedi_conn->wait_queue,
1286 (qedi_conn->cmd_cleanup_req ==
1287 qedi_conn->cmd_cleanup_cmpl),
1289 iscsi_host_for_each_session(qedi->shost,
1290 qedi_mark_device_available);
1294 iscsi_host_for_each_session(qedi->shost,
1295 qedi_mark_device_available);
1300 void qedi_clearsq(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn,
1301 struct iscsi_task *task)
1303 struct qedi_endpoint *qedi_ep;
1306 qedi_ep = qedi_conn->ep;
1307 qedi_conn->cmd_cleanup_req = 0;
1308 qedi_conn->cmd_cleanup_cmpl = 0;
1311 QEDI_WARN(&qedi->dbg_ctx,
1312 "Cannot proceed, ep already disconnected, cid=0x%x\n",
1313 qedi_conn->iscsi_conn_id);
1317 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1318 "Clearing SQ for cid=0x%x, conn=%p, ep=%p\n",
1319 qedi_conn->iscsi_conn_id, qedi_conn, qedi_ep);
1321 qedi_ops->clear_sq(qedi->cdev, qedi_ep->handle);
1323 rval = qedi_cleanup_all_io(qedi, qedi_conn, task, true);
1325 QEDI_ERR(&qedi->dbg_ctx,
1326 "fatal error, need hard reset, cid=0x%x\n",
1327 qedi_conn->iscsi_conn_id);
1332 static int qedi_wait_for_cleanup_request(struct qedi_ctx *qedi,
1333 struct qedi_conn *qedi_conn,
1334 struct iscsi_task *task,
1335 struct qedi_cmd *qedi_cmd,
1336 struct qedi_work_map *list_work)
1338 struct qedi_cmd *cmd = (struct qedi_cmd *)task->dd_data;
1341 wait = wait_event_interruptible_timeout(qedi_conn->wait_queue,
1342 ((qedi_cmd->state ==
1344 ((qedi_cmd->type == TYPEIO) &&
1346 RESPONSE_RECEIVED))),
1349 qedi_cmd->state = CLEANUP_WAIT_FAILED;
1351 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1352 "Cleanup timedout tid=0x%x, issue connection recovery, cid=0x%x\n",
1353 cmd->task_id, qedi_conn->iscsi_conn_id);
1360 static void qedi_tmf_work(struct work_struct *work)
1362 struct qedi_cmd *qedi_cmd =
1363 container_of(work, struct qedi_cmd, tmf_work);
1364 struct qedi_conn *qedi_conn = qedi_cmd->conn;
1365 struct qedi_ctx *qedi = qedi_conn->qedi;
1366 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
1367 struct qedi_work_map *list_work = NULL;
1368 struct iscsi_task *mtask;
1369 struct qedi_cmd *cmd;
1370 struct iscsi_task *ctask;
1371 struct iscsi_tm *tmf_hdr;
1375 mtask = qedi_cmd->task;
1376 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
1377 set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
1379 ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt);
1380 if (!ctask || !ctask->sc) {
1381 QEDI_ERR(&qedi->dbg_ctx, "Task already completed\n");
1385 cmd = (struct qedi_cmd *)ctask->dd_data;
1386 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1387 "Abort tmf rtt=0x%x, cmd itt=0x%x, cmd tid=0x%x, cid=0x%x\n",
1388 get_itt(tmf_hdr->rtt), get_itt(ctask->itt), cmd->task_id,
1389 qedi_conn->iscsi_conn_id);
1391 if (qedi_do_not_recover) {
1392 QEDI_ERR(&qedi->dbg_ctx, "DONT SEND CLEANUP/ABORT %d\n",
1393 qedi_do_not_recover);
1397 list_work = kzalloc(sizeof(*list_work), GFP_ATOMIC);
1399 QEDI_ERR(&qedi->dbg_ctx, "Memory allocation failed\n");
1403 qedi_cmd->type = TYPEIO;
1404 list_work->qedi_cmd = qedi_cmd;
1405 list_work->rtid = cmd->task_id;
1406 list_work->state = QEDI_WORK_SCHEDULED;
1407 qedi_cmd->list_tmf_work = list_work;
1409 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1410 "Queue tmf work=%p, list node=%p, cid=0x%x, tmf flags=0x%x\n",
1411 list_work->ptr_tmf_work, list_work, qedi_conn->iscsi_conn_id,
1414 spin_lock_bh(&qedi_conn->tmf_work_lock);
1415 list_add_tail(&list_work->list, &qedi_conn->tmf_work_list);
1416 spin_unlock_bh(&qedi_conn->tmf_work_lock);
1418 qedi_iscsi_cleanup_task(ctask, false);
1420 rval = qedi_wait_for_cleanup_request(qedi, qedi_conn, ctask, qedi_cmd,
1423 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1424 "FW cleanup got escalated, cid=0x%x\n",
1425 qedi_conn->iscsi_conn_id);
1429 tid = qedi_get_task_idx(qedi);
1431 QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n",
1432 qedi_conn->iscsi_conn_id);
1436 qedi_cmd->task_id = tid;
1437 qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task);
1440 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
1444 spin_lock_bh(&qedi_conn->tmf_work_lock);
1445 if (!qedi_cmd->list_tmf_work) {
1446 list_del_init(&list_work->list);
1447 qedi_cmd->list_tmf_work = NULL;
1450 spin_unlock_bh(&qedi_conn->tmf_work_lock);
1452 spin_lock(&qedi_conn->list_lock);
1453 list_del_init(&cmd->io_cmd);
1454 qedi_conn->active_cmd_count--;
1455 spin_unlock(&qedi_conn->list_lock);
1457 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
1460 static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn,
1461 struct iscsi_task *mtask)
1463 struct iscsi_tmf_request_hdr tmf_pdu_header;
1464 struct iscsi_task_params task_params;
1465 struct qedi_ctx *qedi = qedi_conn->qedi;
1466 struct e4_iscsi_task_context *fw_task_ctx;
1467 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
1468 struct iscsi_task *ctask;
1469 struct iscsi_tm *tmf_hdr;
1470 struct qedi_cmd *qedi_cmd;
1471 struct qedi_cmd *cmd;
1472 struct qedi_endpoint *ep;
1478 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
1479 qedi_cmd = (struct qedi_cmd *)mtask->dd_data;
1484 tid = qedi_get_task_idx(qedi);
1489 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
1491 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
1493 qedi_cmd->task_id = tid;
1495 memset(&task_params, 0, sizeof(task_params));
1496 memset(&tmf_pdu_header, 0, sizeof(tmf_pdu_header));
1498 /* Update header info */
1499 qedi_update_itt_map(qedi, tid, mtask->itt, qedi_cmd);
1500 tmf_pdu_header.itt = qedi_set_itt(tid, get_itt(mtask->itt));
1501 tmf_pdu_header.cmd_sn = be32_to_cpu(tmf_hdr->cmdsn);
1503 memcpy(scsi_lun, &tmf_hdr->lun, sizeof(struct scsi_lun));
1504 tmf_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]);
1505 tmf_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]);
1507 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1508 ISCSI_TM_FUNC_ABORT_TASK) {
1509 ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt);
1510 if (!ctask || !ctask->sc) {
1511 QEDI_ERR(&qedi->dbg_ctx,
1512 "Could not get reference task\n");
1515 cmd = (struct qedi_cmd *)ctask->dd_data;
1516 tmf_pdu_header.rtt =
1517 qedi_set_itt(cmd->task_id,
1518 get_itt(tmf_hdr->rtt));
1520 tmf_pdu_header.rtt = ISCSI_RESERVED_TAG;
1523 tmf_pdu_header.opcode = tmf_hdr->opcode;
1524 tmf_pdu_header.function = tmf_hdr->flags;
1525 tmf_pdu_header.hdr_second_dword = ntoh24(tmf_hdr->dlength);
1526 tmf_pdu_header.ref_cmd_sn = be32_to_cpu(tmf_hdr->refcmdsn);
1528 /* Fill fw input params */
1529 task_params.context = fw_task_ctx;
1530 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1531 task_params.itid = tid;
1532 task_params.cq_rss_number = 0;
1533 task_params.tx_io_size = 0;
1534 task_params.rx_io_size = 0;
1536 sq_idx = qedi_get_wqe_idx(qedi_conn);
1537 task_params.sqe = &ep->sq[sq_idx];
1539 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1540 rval = init_initiator_tmf_request_task(&task_params,
1545 spin_lock(&qedi_conn->list_lock);
1546 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1547 qedi_cmd->io_cmd_in_list = true;
1548 qedi_conn->active_cmd_count++;
1549 spin_unlock(&qedi_conn->list_lock);
1551 qedi_ring_doorbell(qedi_conn);
1555 int qedi_iscsi_abort_work(struct qedi_conn *qedi_conn,
1556 struct iscsi_task *mtask)
1558 struct qedi_ctx *qedi = qedi_conn->qedi;
1559 struct iscsi_tm *tmf_hdr;
1560 struct qedi_cmd *qedi_cmd = (struct qedi_cmd *)mtask->dd_data;
1563 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
1564 qedi_cmd->task = mtask;
1566 /* If abort task then schedule the work and return */
1567 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1568 ISCSI_TM_FUNC_ABORT_TASK) {
1569 qedi_cmd->state = CLEANUP_WAIT;
1570 INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_work);
1571 queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work);
1573 } else if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1574 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) ||
1575 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1576 ISCSI_TM_FUNC_TARGET_WARM_RESET) ||
1577 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1578 ISCSI_TM_FUNC_TARGET_COLD_RESET)) {
1579 tid = qedi_get_task_idx(qedi);
1581 QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n",
1582 qedi_conn->iscsi_conn_id);
1585 qedi_cmd->task_id = tid;
1587 qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task);
1590 QEDI_ERR(&qedi->dbg_ctx, "Invalid tmf, cid=0x%x\n",
1591 qedi_conn->iscsi_conn_id);
1598 int qedi_send_iscsi_text(struct qedi_conn *qedi_conn,
1599 struct iscsi_task *task)
1601 struct iscsi_text_request_hdr text_request_pdu_header;
1602 struct scsi_sgl_task_params tx_sgl_task_params;
1603 struct scsi_sgl_task_params rx_sgl_task_params;
1604 struct iscsi_task_params task_params;
1605 struct e4_iscsi_task_context *fw_task_ctx;
1606 struct qedi_ctx *qedi = qedi_conn->qedi;
1607 struct iscsi_text *text_hdr;
1608 struct scsi_sge *req_sge = NULL;
1609 struct scsi_sge *resp_sge = NULL;
1610 struct qedi_cmd *qedi_cmd;
1611 struct qedi_endpoint *ep;
1616 req_sge = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1617 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1618 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1619 text_hdr = (struct iscsi_text *)task->hdr;
1622 tid = qedi_get_task_idx(qedi);
1627 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
1629 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
1631 qedi_cmd->task_id = tid;
1633 memset(&task_params, 0, sizeof(task_params));
1634 memset(&text_request_pdu_header, 0, sizeof(text_request_pdu_header));
1635 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1636 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1638 /* Update header info */
1639 text_request_pdu_header.opcode = text_hdr->opcode;
1640 text_request_pdu_header.flags_attr = text_hdr->flags;
1642 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1643 text_request_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1644 text_request_pdu_header.ttt = text_hdr->ttt;
1645 text_request_pdu_header.cmd_sn = be32_to_cpu(text_hdr->cmdsn);
1646 text_request_pdu_header.exp_stat_sn = be32_to_cpu(text_hdr->exp_statsn);
1647 text_request_pdu_header.hdr_second_dword = ntoh24(text_hdr->dlength);
1649 /* Fill tx AHS and rx buffer */
1650 tx_sgl_task_params.sgl =
1651 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1652 tx_sgl_task_params.sgl_phys_addr.lo =
1653 (u32)(qedi_conn->gen_pdu.req_dma_addr);
1654 tx_sgl_task_params.sgl_phys_addr.hi =
1655 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
1656 tx_sgl_task_params.total_buffer_size = req_sge->sge_len;
1657 tx_sgl_task_params.num_sges = 1;
1659 rx_sgl_task_params.sgl =
1660 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1661 rx_sgl_task_params.sgl_phys_addr.lo =
1662 (u32)(qedi_conn->gen_pdu.resp_dma_addr);
1663 rx_sgl_task_params.sgl_phys_addr.hi =
1664 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
1665 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len;
1666 rx_sgl_task_params.num_sges = 1;
1668 /* Fill fw input params */
1669 task_params.context = fw_task_ctx;
1670 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1671 task_params.itid = tid;
1672 task_params.cq_rss_number = 0;
1673 task_params.tx_io_size = ntoh24(text_hdr->dlength);
1674 task_params.rx_io_size = resp_sge->sge_len;
1676 sq_idx = qedi_get_wqe_idx(qedi_conn);
1677 task_params.sqe = &ep->sq[sq_idx];
1679 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1680 rval = init_initiator_text_request_task(&task_params,
1681 &text_request_pdu_header,
1682 &tx_sgl_task_params,
1683 &rx_sgl_task_params);
1687 spin_lock(&qedi_conn->list_lock);
1688 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1689 qedi_cmd->io_cmd_in_list = true;
1690 qedi_conn->active_cmd_count++;
1691 spin_unlock(&qedi_conn->list_lock);
1693 qedi_ring_doorbell(qedi_conn);
1697 int qedi_send_iscsi_nopout(struct qedi_conn *qedi_conn,
1698 struct iscsi_task *task,
1699 char *datap, int data_len, int unsol)
1701 struct iscsi_nop_out_hdr nop_out_pdu_header;
1702 struct scsi_sgl_task_params tx_sgl_task_params;
1703 struct scsi_sgl_task_params rx_sgl_task_params;
1704 struct iscsi_task_params task_params;
1705 struct qedi_ctx *qedi = qedi_conn->qedi;
1706 struct e4_iscsi_task_context *fw_task_ctx;
1707 struct iscsi_nopout *nopout_hdr;
1708 struct scsi_sge *resp_sge = NULL;
1709 struct qedi_cmd *qedi_cmd;
1710 struct qedi_endpoint *ep;
1716 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1717 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1718 nopout_hdr = (struct iscsi_nopout *)task->hdr;
1721 tid = qedi_get_task_idx(qedi);
1726 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
1728 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
1730 qedi_cmd->task_id = tid;
1732 memset(&task_params, 0, sizeof(task_params));
1733 memset(&nop_out_pdu_header, 0, sizeof(nop_out_pdu_header));
1734 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1735 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1737 /* Update header info */
1738 nop_out_pdu_header.opcode = nopout_hdr->opcode;
1739 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_CONST1, 1);
1740 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_RSRV, 0);
1742 memcpy(scsi_lun, &nopout_hdr->lun, sizeof(struct scsi_lun));
1743 nop_out_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]);
1744 nop_out_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]);
1745 nop_out_pdu_header.cmd_sn = be32_to_cpu(nopout_hdr->cmdsn);
1746 nop_out_pdu_header.exp_stat_sn = be32_to_cpu(nopout_hdr->exp_statsn);
1748 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1750 if (nopout_hdr->ttt != ISCSI_TTT_ALL_ONES) {
1751 nop_out_pdu_header.itt = be32_to_cpu(nopout_hdr->itt);
1752 nop_out_pdu_header.ttt = be32_to_cpu(nopout_hdr->ttt);
1754 nop_out_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1755 nop_out_pdu_header.ttt = ISCSI_TTT_ALL_ONES;
1757 spin_lock(&qedi_conn->list_lock);
1758 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1759 qedi_cmd->io_cmd_in_list = true;
1760 qedi_conn->active_cmd_count++;
1761 spin_unlock(&qedi_conn->list_lock);
1764 /* Fill tx AHS and rx buffer */
1766 tx_sgl_task_params.sgl =
1767 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1768 tx_sgl_task_params.sgl_phys_addr.lo =
1769 (u32)(qedi_conn->gen_pdu.req_dma_addr);
1770 tx_sgl_task_params.sgl_phys_addr.hi =
1771 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
1772 tx_sgl_task_params.total_buffer_size = data_len;
1773 tx_sgl_task_params.num_sges = 1;
1775 rx_sgl_task_params.sgl =
1776 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1777 rx_sgl_task_params.sgl_phys_addr.lo =
1778 (u32)(qedi_conn->gen_pdu.resp_dma_addr);
1779 rx_sgl_task_params.sgl_phys_addr.hi =
1780 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
1781 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len;
1782 rx_sgl_task_params.num_sges = 1;
1785 /* Fill fw input params */
1786 task_params.context = fw_task_ctx;
1787 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1788 task_params.itid = tid;
1789 task_params.cq_rss_number = 0;
1790 task_params.tx_io_size = data_len;
1791 task_params.rx_io_size = resp_sge->sge_len;
1793 sq_idx = qedi_get_wqe_idx(qedi_conn);
1794 task_params.sqe = &ep->sq[sq_idx];
1796 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1797 rval = init_initiator_nop_out_task(&task_params,
1798 &nop_out_pdu_header,
1799 &tx_sgl_task_params,
1800 &rx_sgl_task_params);
1804 qedi_ring_doorbell(qedi_conn);
1808 static int qedi_split_bd(struct qedi_cmd *cmd, u64 addr, int sg_len,
1811 struct scsi_sge *bd = cmd->io_tbl.sge_tbl;
1812 int frag_size, sg_frags;
1817 if (addr % QEDI_PAGE_SIZE)
1819 (QEDI_PAGE_SIZE - (addr % QEDI_PAGE_SIZE));
1821 frag_size = (sg_len > QEDI_BD_SPLIT_SZ) ? 0 :
1822 (sg_len % QEDI_BD_SPLIT_SZ);
1825 frag_size = QEDI_BD_SPLIT_SZ;
1827 bd[bd_index + sg_frags].sge_addr.lo = (addr & 0xffffffff);
1828 bd[bd_index + sg_frags].sge_addr.hi = (addr >> 32);
1829 bd[bd_index + sg_frags].sge_len = (u16)frag_size;
1830 QEDI_INFO(&cmd->conn->qedi->dbg_ctx, QEDI_LOG_IO,
1831 "split sge %d: addr=%llx, len=%x",
1832 (bd_index + sg_frags), addr, frag_size);
1834 addr += (u64)frag_size;
1836 sg_len -= frag_size;
1841 static int qedi_map_scsi_sg(struct qedi_ctx *qedi, struct qedi_cmd *cmd)
1843 struct scsi_cmnd *sc = cmd->scsi_cmd;
1844 struct scsi_sge *bd = cmd->io_tbl.sge_tbl;
1845 struct scatterlist *sg;
1854 WARN_ON(scsi_sg_count(sc) > QEDI_ISCSI_MAX_BDS_PER_CMD);
1856 sg_count = dma_map_sg(&qedi->pdev->dev, scsi_sglist(sc),
1857 scsi_sg_count(sc), sc->sc_data_direction);
1860 * New condition to send single SGE as cached-SGL.
1861 * Single SGE with length less than 64K.
1863 sg = scsi_sglist(sc);
1864 if ((sg_count == 1) && (sg_dma_len(sg) <= MAX_SGLEN_FOR_CACHESGL)) {
1865 sg_len = sg_dma_len(sg);
1866 addr = (u64)sg_dma_address(sg);
1868 bd[bd_count].sge_addr.lo = (addr & 0xffffffff);
1869 bd[bd_count].sge_addr.hi = (addr >> 32);
1870 bd[bd_count].sge_len = (u16)sg_len;
1872 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1873 "single-cached-sgl: bd_count:%d addr=%llx, len=%x",
1874 sg_count, addr, sg_len);
1879 scsi_for_each_sg(sc, sg, sg_count, i) {
1880 sg_len = sg_dma_len(sg);
1881 addr = (u64)sg_dma_address(sg);
1882 end_addr = (addr + sg_len);
1885 * first sg elem in the 'list',
1886 * check if end addr is page-aligned.
1888 if ((i == 0) && (sg_count > 1) && (end_addr % QEDI_PAGE_SIZE))
1889 cmd->use_slowpath = true;
1892 * last sg elem in the 'list',
1893 * check if start addr is page-aligned.
1895 else if ((i == (sg_count - 1)) &&
1896 (sg_count > 1) && (addr % QEDI_PAGE_SIZE))
1897 cmd->use_slowpath = true;
1900 * middle sg elements in list,
1901 * check if start and end addr is page-aligned
1903 else if ((i != 0) && (i != (sg_count - 1)) &&
1904 ((addr % QEDI_PAGE_SIZE) ||
1905 (end_addr % QEDI_PAGE_SIZE)))
1906 cmd->use_slowpath = true;
1908 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "sg[%d] size=0x%x",
1911 if (sg_len > QEDI_BD_SPLIT_SZ) {
1912 sg_frags = qedi_split_bd(cmd, addr, sg_len, bd_count);
1915 bd[bd_count].sge_addr.lo = addr & 0xffffffff;
1916 bd[bd_count].sge_addr.hi = addr >> 32;
1917 bd[bd_count].sge_len = sg_len;
1919 byte_count += sg_len;
1920 bd_count += sg_frags;
1923 if (byte_count != scsi_bufflen(sc))
1924 QEDI_ERR(&qedi->dbg_ctx,
1925 "byte_count = %d != scsi_bufflen = %d\n", byte_count,
1928 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "byte_count = %d\n",
1931 WARN_ON(byte_count != scsi_bufflen(sc));
1936 static void qedi_iscsi_map_sg_list(struct qedi_cmd *cmd)
1939 struct scsi_cmnd *sc = cmd->scsi_cmd;
1941 if (scsi_sg_count(sc)) {
1942 bd_count = qedi_map_scsi_sg(cmd->conn->qedi, cmd);
1946 struct scsi_sge *bd = cmd->io_tbl.sge_tbl;
1948 bd[0].sge_addr.lo = 0;
1949 bd[0].sge_addr.hi = 0;
1953 cmd->io_tbl.sge_valid = bd_count;
1956 static void qedi_cpy_scsi_cdb(struct scsi_cmnd *sc, u32 *dstp)
1962 lpcnt = sc->cmd_len / sizeof(dword);
1963 srcp = (u8 *)sc->cmnd;
1965 memcpy(&dword, (const void *)srcp, 4);
1966 *dstp = cpu_to_be32(dword);
1970 if (sc->cmd_len & 0x3) {
1971 dword = (u32)srcp[0] | ((u32)srcp[1] << 8);
1972 *dstp = cpu_to_be32(dword);
1976 void qedi_trace_io(struct qedi_ctx *qedi, struct iscsi_task *task,
1977 u16 tid, int8_t direction)
1979 struct qedi_io_log *io_log;
1980 struct iscsi_conn *conn = task->conn;
1981 struct qedi_conn *qedi_conn = conn->dd_data;
1982 struct scsi_cmnd *sc_cmd = task->sc;
1983 unsigned long flags;
1985 spin_lock_irqsave(&qedi->io_trace_lock, flags);
1987 io_log = &qedi->io_trace_buf[qedi->io_trace_idx];
1988 io_log->direction = direction;
1989 io_log->task_id = tid;
1990 io_log->cid = qedi_conn->iscsi_conn_id;
1991 io_log->lun = sc_cmd->device->lun;
1992 io_log->op = sc_cmd->cmnd[0];
1993 io_log->lba[0] = sc_cmd->cmnd[2];
1994 io_log->lba[1] = sc_cmd->cmnd[3];
1995 io_log->lba[2] = sc_cmd->cmnd[4];
1996 io_log->lba[3] = sc_cmd->cmnd[5];
1997 io_log->bufflen = scsi_bufflen(sc_cmd);
1998 io_log->sg_count = scsi_sg_count(sc_cmd);
1999 io_log->fast_sgs = qedi->fast_sgls;
2000 io_log->cached_sgs = qedi->cached_sgls;
2001 io_log->slow_sgs = qedi->slow_sgls;
2002 io_log->cached_sge = qedi->use_cached_sge;
2003 io_log->slow_sge = qedi->use_slow_sge;
2004 io_log->fast_sge = qedi->use_fast_sge;
2005 io_log->result = sc_cmd->result;
2006 io_log->jiffies = jiffies;
2007 io_log->blk_req_cpu = smp_processor_id();
2009 if (direction == QEDI_IO_TRACE_REQ) {
2010 /* For requests we only care about the submission CPU */
2011 io_log->req_cpu = smp_processor_id() % qedi->num_queues;
2012 io_log->intr_cpu = 0;
2013 io_log->blk_rsp_cpu = 0;
2014 } else if (direction == QEDI_IO_TRACE_RSP) {
2015 io_log->req_cpu = smp_processor_id() % qedi->num_queues;
2016 io_log->intr_cpu = qedi->intr_cpu;
2017 io_log->blk_rsp_cpu = smp_processor_id();
2020 qedi->io_trace_idx++;
2021 if (qedi->io_trace_idx == QEDI_IO_TRACE_SIZE)
2022 qedi->io_trace_idx = 0;
2024 qedi->use_cached_sge = false;
2025 qedi->use_slow_sge = false;
2026 qedi->use_fast_sge = false;
2028 spin_unlock_irqrestore(&qedi->io_trace_lock, flags);
2031 int qedi_iscsi_send_ioreq(struct iscsi_task *task)
2033 struct iscsi_conn *conn = task->conn;
2034 struct iscsi_session *session = conn->session;
2035 struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session);
2036 struct qedi_ctx *qedi = iscsi_host_priv(shost);
2037 struct qedi_conn *qedi_conn = conn->dd_data;
2038 struct qedi_cmd *cmd = task->dd_data;
2039 struct scsi_cmnd *sc = task->sc;
2040 struct iscsi_cmd_hdr cmd_pdu_header;
2041 struct scsi_sgl_task_params tx_sgl_task_params;
2042 struct scsi_sgl_task_params rx_sgl_task_params;
2043 struct scsi_sgl_task_params *prx_sgl = NULL;
2044 struct scsi_sgl_task_params *ptx_sgl = NULL;
2045 struct iscsi_task_params task_params;
2046 struct iscsi_conn_params conn_params;
2047 struct scsi_initiator_cmd_params cmd_params;
2048 struct e4_iscsi_task_context *fw_task_ctx;
2049 struct iscsi_cls_conn *cls_conn;
2050 struct iscsi_scsi_req *hdr = (struct iscsi_scsi_req *)task->hdr;
2051 enum iscsi_task_type task_type = MAX_ISCSI_TASK_TYPE;
2052 struct qedi_endpoint *ep;
2060 cls_conn = qedi_conn->cls_conn;
2061 conn = cls_conn->dd_data;
2063 qedi_iscsi_map_sg_list(cmd);
2064 int_to_scsilun(sc->device->lun, (struct scsi_lun *)scsi_lun);
2066 tid = qedi_get_task_idx(qedi);
2071 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
2073 memset(fw_task_ctx, 0, sizeof(struct e4_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);