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;
158 struct iscsi_cls_session *cls_sess;
161 set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
162 resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf;
163 cls_sess = iscsi_conn_to_session(qedi_conn->cls_conn);
165 iscsi_block_session(session->cls_session);
166 rval = qedi_cleanup_all_io(qedi, qedi_conn, qedi_cmd->task, true);
168 qedi_clear_task_idx(qedi, qedi_cmd->task_id);
169 iscsi_unblock_session(session->cls_session);
173 iscsi_unblock_session(session->cls_session);
174 qedi_clear_task_idx(qedi, qedi_cmd->task_id);
176 spin_lock(&session->back_lock);
177 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0);
178 spin_unlock(&session->back_lock);
182 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
185 static void qedi_process_tmf_resp(struct qedi_ctx *qedi,
186 union iscsi_cqe *cqe,
187 struct iscsi_task *task,
188 struct qedi_conn *qedi_conn)
191 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
192 struct iscsi_session *session = conn->session;
193 struct iscsi_tmf_response_hdr *cqe_tmp_response;
194 struct iscsi_tm_rsp *resp_hdr_ptr;
195 struct iscsi_tm *tmf_hdr;
196 struct qedi_cmd *qedi_cmd = NULL;
198 cqe_tmp_response = &cqe->cqe_common.iscsi_hdr.tmf_response;
200 qedi_cmd = task->dd_data;
201 qedi_cmd->tmf_resp_buf = kzalloc(sizeof(*resp_hdr_ptr), GFP_ATOMIC);
202 if (!qedi_cmd->tmf_resp_buf) {
203 QEDI_ERR(&qedi->dbg_ctx,
204 "Failed to allocate resp buf, cid=0x%x\n",
205 qedi_conn->iscsi_conn_id);
209 spin_lock(&session->back_lock);
210 resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf;
211 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_tm_rsp));
213 /* Fill up the header */
214 resp_hdr_ptr->opcode = cqe_tmp_response->opcode;
215 resp_hdr_ptr->flags = cqe_tmp_response->hdr_flags;
216 resp_hdr_ptr->response = cqe_tmp_response->hdr_response;
217 resp_hdr_ptr->hlength = 0;
219 hton24(resp_hdr_ptr->dlength,
220 (cqe_tmp_response->hdr_second_dword &
221 ISCSI_TMF_RESPONSE_HDR_DATA_SEG_LEN_MASK));
222 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid,
224 resp_hdr_ptr->statsn = cpu_to_be32(cqe_tmp_response->stat_sn);
225 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_tmp_response->exp_cmd_sn);
226 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_tmp_response->max_cmd_sn);
228 tmf_hdr = (struct iscsi_tm *)qedi_cmd->task->hdr;
230 if (likely(qedi_cmd->io_cmd_in_list)) {
231 qedi_cmd->io_cmd_in_list = false;
232 list_del_init(&qedi_cmd->io_cmd);
233 qedi_conn->active_cmd_count--;
236 if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
237 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) ||
238 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
239 ISCSI_TM_FUNC_TARGET_WARM_RESET) ||
240 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
241 ISCSI_TM_FUNC_TARGET_COLD_RESET)) {
242 INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_resp_work);
243 queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work);
247 qedi_clear_task_idx(qedi, qedi_cmd->task_id);
249 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0);
253 spin_unlock(&session->back_lock);
256 static void qedi_process_login_resp(struct qedi_ctx *qedi,
257 union iscsi_cqe *cqe,
258 struct iscsi_task *task,
259 struct qedi_conn *qedi_conn)
261 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
262 struct iscsi_session *session = conn->session;
263 struct e4_iscsi_task_context *task_ctx;
264 struct iscsi_login_rsp *resp_hdr_ptr;
265 struct iscsi_login_response_hdr *cqe_login_response;
266 struct qedi_cmd *cmd;
269 cmd = (struct qedi_cmd *)task->dd_data;
271 cqe_login_response = &cqe->cqe_common.iscsi_hdr.login_response;
272 task_ctx = qedi_get_task_mem(&qedi->tasks, cmd->task_id);
274 spin_lock(&session->back_lock);
275 resp_hdr_ptr = (struct iscsi_login_rsp *)&qedi_conn->gen_pdu.resp_hdr;
276 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_login_rsp));
277 resp_hdr_ptr->opcode = cqe_login_response->opcode;
278 resp_hdr_ptr->flags = cqe_login_response->flags_attr;
279 resp_hdr_ptr->hlength = 0;
281 hton24(resp_hdr_ptr->dlength,
282 (cqe_login_response->hdr_second_dword &
283 ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK));
284 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid,
286 resp_hdr_ptr->tsih = cqe_login_response->tsih;
287 resp_hdr_ptr->statsn = cpu_to_be32(cqe_login_response->stat_sn);
288 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_login_response->exp_cmd_sn);
289 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_login_response->max_cmd_sn);
290 resp_hdr_ptr->status_class = cqe_login_response->status_class;
291 resp_hdr_ptr->status_detail = cqe_login_response->status_detail;
292 pld_len = cqe_login_response->hdr_second_dword &
293 ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK;
294 qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len;
296 if (likely(cmd->io_cmd_in_list)) {
297 cmd->io_cmd_in_list = false;
298 list_del_init(&cmd->io_cmd);
299 qedi_conn->active_cmd_count--;
302 memset(task_ctx, '\0', sizeof(*task_ctx));
304 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr,
305 qedi_conn->gen_pdu.resp_buf,
306 (qedi_conn->gen_pdu.resp_wr_ptr -
307 qedi_conn->gen_pdu.resp_buf));
309 spin_unlock(&session->back_lock);
310 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
311 "Freeing tid=0x%x for cid=0x%x\n",
312 cmd->task_id, qedi_conn->iscsi_conn_id);
313 cmd->state = RESPONSE_RECEIVED;
314 qedi_clear_task_idx(qedi, cmd->task_id);
317 static void qedi_get_rq_bdq_buf(struct qedi_ctx *qedi,
318 struct iscsi_cqe_unsolicited *cqe,
323 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
324 "pld_len [%d], bdq_prod_idx [%d], idx [%d]\n",
325 len, qedi->bdq_prod_idx,
326 (qedi->bdq_prod_idx % qedi->rq_num_entries));
328 /* Obtain buffer address from rqe_opaque */
329 idx = cqe->rqe_opaque;
330 if (idx > (QEDI_BDQ_NUM - 1)) {
331 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
332 "wrong idx %d returned by FW, dropping the unsolicited pkt\n",
337 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
338 "rqe_opaque [0x%p], idx [%d]\n", cqe->rqe_opaque, idx);
340 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
341 "unsol_cqe_type = %d\n", cqe->unsol_cqe_type);
342 switch (cqe->unsol_cqe_type) {
343 case ISCSI_CQE_UNSOLICITED_SINGLE:
344 case ISCSI_CQE_UNSOLICITED_FIRST:
346 memcpy(ptr, (void *)qedi->bdq[idx].buf_addr, len);
348 case ISCSI_CQE_UNSOLICITED_MIDDLE:
349 case ISCSI_CQE_UNSOLICITED_LAST:
356 static void qedi_put_rq_bdq_buf(struct qedi_ctx *qedi,
357 struct iscsi_cqe_unsolicited *cqe,
364 /* Obtain buffer address from rqe_opaque */
365 idx = cqe->rqe_opaque;
366 if (idx > (QEDI_BDQ_NUM - 1)) {
367 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
368 "wrong idx %d returned by FW, dropping the unsolicited pkt\n",
373 pbl = (struct scsi_bd *)qedi->bdq_pbl;
374 pbl += (qedi->bdq_prod_idx % qedi->rq_num_entries);
375 pbl->address.hi = cpu_to_le32(QEDI_U64_HI(qedi->bdq[idx].buf_dma));
376 pbl->address.lo = cpu_to_le32(QEDI_U64_LO(qedi->bdq[idx].buf_dma));
377 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
378 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx] idx [%d]\n",
379 pbl, pbl->address.hi, pbl->address.lo, idx);
380 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0;
381 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0;
382 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0;
383 pbl->opaque.iscsi_opaque.opaque = cpu_to_le32(idx);
385 /* Increment producer to let f/w know we've handled the frame */
386 qedi->bdq_prod_idx += count;
388 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);
389 tmp = readw(qedi->bdq_primary_prod);
391 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
392 tmp = readw(qedi->bdq_secondary_prod);
395 static void qedi_unsol_pdu_adjust_bdq(struct qedi_ctx *qedi,
396 struct iscsi_cqe_unsolicited *cqe,
397 u32 pdu_len, u32 num_bdqs,
400 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
401 "num_bdqs [%d]\n", num_bdqs);
403 qedi_get_rq_bdq_buf(qedi, cqe, bdq_data, pdu_len);
404 qedi_put_rq_bdq_buf(qedi, cqe, (num_bdqs + 1));
407 static int qedi_process_nopin_mesg(struct qedi_ctx *qedi,
408 union iscsi_cqe *cqe,
409 struct iscsi_task *task,
410 struct qedi_conn *qedi_conn, u16 que_idx)
412 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
413 struct iscsi_session *session = conn->session;
414 struct iscsi_nop_in_hdr *cqe_nop_in;
415 struct iscsi_nopin *hdr;
416 struct qedi_cmd *cmd;
417 int tgt_async_nop = 0;
419 u32 pdu_len, num_bdqs;
420 char bdq_data[QEDI_BDQ_BUF_SIZE];
423 spin_lock_bh(&session->back_lock);
424 cqe_nop_in = &cqe->cqe_common.iscsi_hdr.nop_in;
426 pdu_len = cqe_nop_in->hdr_second_dword &
427 ISCSI_NOP_IN_HDR_DATA_SEG_LEN_MASK;
428 num_bdqs = pdu_len / QEDI_BDQ_BUF_SIZE;
430 hdr = (struct iscsi_nopin *)&qedi_conn->gen_pdu.resp_hdr;
431 memset(hdr, 0, sizeof(struct iscsi_hdr));
432 hdr->opcode = cqe_nop_in->opcode;
433 hdr->max_cmdsn = cpu_to_be32(cqe_nop_in->max_cmd_sn);
434 hdr->exp_cmdsn = cpu_to_be32(cqe_nop_in->exp_cmd_sn);
435 hdr->statsn = cpu_to_be32(cqe_nop_in->stat_sn);
436 hdr->ttt = cpu_to_be32(cqe_nop_in->ttt);
438 if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) {
439 spin_lock_irqsave(&qedi->hba_lock, flags);
440 qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited,
441 pdu_len, num_bdqs, bdq_data);
442 hdr->itt = RESERVED_ITT;
444 spin_unlock_irqrestore(&qedi->hba_lock, flags);
448 /* Response to one of our nop-outs */
451 hdr->flags = ISCSI_FLAG_CMD_FINAL;
452 hdr->itt = build_itt(cqe->cqe_solicited.itid,
456 memcpy(&hdr->lun, lun, sizeof(struct scsi_lun));
457 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
458 "Freeing tid=0x%x for cid=0x%x\n",
459 cmd->task_id, qedi_conn->iscsi_conn_id);
460 cmd->state = RESPONSE_RECEIVED;
461 spin_lock(&qedi_conn->list_lock);
462 if (likely(cmd->io_cmd_in_list)) {
463 cmd->io_cmd_in_list = false;
464 list_del_init(&cmd->io_cmd);
465 qedi_conn->active_cmd_count--;
468 spin_unlock(&qedi_conn->list_lock);
469 qedi_clear_task_idx(qedi, cmd->task_id);
473 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, bdq_data, pdu_len);
475 spin_unlock_bh(&session->back_lock);
476 return tgt_async_nop;
479 static void qedi_process_async_mesg(struct qedi_ctx *qedi,
480 union iscsi_cqe *cqe,
481 struct iscsi_task *task,
482 struct qedi_conn *qedi_conn,
485 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
486 struct iscsi_session *session = conn->session;
487 struct iscsi_async_msg_hdr *cqe_async_msg;
488 struct iscsi_async *resp_hdr;
490 u32 pdu_len, num_bdqs;
491 char bdq_data[QEDI_BDQ_BUF_SIZE];
494 spin_lock_bh(&session->back_lock);
496 cqe_async_msg = &cqe->cqe_common.iscsi_hdr.async_msg;
497 pdu_len = cqe_async_msg->hdr_second_dword &
498 ISCSI_ASYNC_MSG_HDR_DATA_SEG_LEN_MASK;
499 num_bdqs = pdu_len / QEDI_BDQ_BUF_SIZE;
501 if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) {
502 spin_lock_irqsave(&qedi->hba_lock, flags);
503 qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited,
504 pdu_len, num_bdqs, bdq_data);
505 spin_unlock_irqrestore(&qedi->hba_lock, flags);
508 resp_hdr = (struct iscsi_async *)&qedi_conn->gen_pdu.resp_hdr;
509 memset(resp_hdr, 0, sizeof(struct iscsi_hdr));
510 resp_hdr->opcode = cqe_async_msg->opcode;
511 resp_hdr->flags = 0x80;
513 lun[0] = cpu_to_be32(cqe_async_msg->lun.lo);
514 lun[1] = cpu_to_be32(cqe_async_msg->lun.hi);
515 memcpy(&resp_hdr->lun, lun, sizeof(struct scsi_lun));
516 resp_hdr->exp_cmdsn = cpu_to_be32(cqe_async_msg->exp_cmd_sn);
517 resp_hdr->max_cmdsn = cpu_to_be32(cqe_async_msg->max_cmd_sn);
518 resp_hdr->statsn = cpu_to_be32(cqe_async_msg->stat_sn);
520 resp_hdr->async_event = cqe_async_msg->async_event;
521 resp_hdr->async_vcode = cqe_async_msg->async_vcode;
523 resp_hdr->param1 = cpu_to_be16(cqe_async_msg->param1_rsrv);
524 resp_hdr->param2 = cpu_to_be16(cqe_async_msg->param2_rsrv);
525 resp_hdr->param3 = cpu_to_be16(cqe_async_msg->param3_rsrv);
527 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, bdq_data,
530 spin_unlock_bh(&session->back_lock);
533 static void qedi_process_reject_mesg(struct qedi_ctx *qedi,
534 union iscsi_cqe *cqe,
535 struct iscsi_task *task,
536 struct qedi_conn *qedi_conn,
539 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
540 struct iscsi_session *session = conn->session;
541 struct iscsi_reject_hdr *cqe_reject;
542 struct iscsi_reject *hdr;
543 u32 pld_len, num_bdqs;
546 spin_lock_bh(&session->back_lock);
547 cqe_reject = &cqe->cqe_common.iscsi_hdr.reject;
548 pld_len = cqe_reject->hdr_second_dword &
549 ISCSI_REJECT_HDR_DATA_SEG_LEN_MASK;
550 num_bdqs = pld_len / QEDI_BDQ_BUF_SIZE;
552 if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) {
553 spin_lock_irqsave(&qedi->hba_lock, flags);
554 qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited,
555 pld_len, num_bdqs, conn->data);
556 spin_unlock_irqrestore(&qedi->hba_lock, flags);
558 hdr = (struct iscsi_reject *)&qedi_conn->gen_pdu.resp_hdr;
559 memset(hdr, 0, sizeof(struct iscsi_hdr));
560 hdr->opcode = cqe_reject->opcode;
561 hdr->reason = cqe_reject->hdr_reason;
562 hdr->flags = cqe_reject->hdr_flags;
563 hton24(hdr->dlength, (cqe_reject->hdr_second_dword &
564 ISCSI_REJECT_HDR_DATA_SEG_LEN_MASK));
565 hdr->max_cmdsn = cpu_to_be32(cqe_reject->max_cmd_sn);
566 hdr->exp_cmdsn = cpu_to_be32(cqe_reject->exp_cmd_sn);
567 hdr->statsn = cpu_to_be32(cqe_reject->stat_sn);
568 hdr->ffffffff = cpu_to_be32(0xffffffff);
570 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr,
571 conn->data, pld_len);
572 spin_unlock_bh(&session->back_lock);
575 static void qedi_scsi_completion(struct qedi_ctx *qedi,
576 union iscsi_cqe *cqe,
577 struct iscsi_task *task,
578 struct iscsi_conn *conn)
580 struct scsi_cmnd *sc_cmd;
581 struct qedi_cmd *cmd = task->dd_data;
582 struct iscsi_session *session = conn->session;
583 struct iscsi_scsi_rsp *hdr;
584 struct iscsi_data_in_hdr *cqe_data_in;
586 struct qedi_conn *qedi_conn;
590 iscsi_cid = cqe->cqe_common.conn_id;
591 qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
593 cqe_data_in = &cqe->cqe_common.iscsi_hdr.data_in;
595 cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits;
597 spin_lock_bh(&session->back_lock);
598 /* get the scsi command */
599 sc_cmd = cmd->scsi_cmd;
602 QEDI_WARN(&qedi->dbg_ctx, "sc_cmd is NULL!\n");
606 if (!sc_cmd->SCp.ptr) {
607 QEDI_WARN(&qedi->dbg_ctx,
608 "SCp.ptr is NULL, returned in another context.\n");
612 if (!sc_cmd->request) {
613 QEDI_WARN(&qedi->dbg_ctx,
614 "sc_cmd->request is NULL, sc_cmd=%p.\n",
619 if (!sc_cmd->request->special) {
620 QEDI_WARN(&qedi->dbg_ctx,
621 "request->special is NULL so request not valid, sc_cmd=%p.\n",
626 if (!sc_cmd->request->q) {
627 QEDI_WARN(&qedi->dbg_ctx,
628 "request->q is NULL so request is not valid, sc_cmd=%p.\n",
633 qedi_iscsi_unmap_sg_list(cmd);
635 hdr = (struct iscsi_scsi_rsp *)task->hdr;
636 hdr->opcode = cqe_data_in->opcode;
637 hdr->max_cmdsn = cpu_to_be32(cqe_data_in->max_cmd_sn);
638 hdr->exp_cmdsn = cpu_to_be32(cqe_data_in->exp_cmd_sn);
639 hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age);
640 hdr->response = cqe_data_in->reserved1;
641 hdr->cmd_status = cqe_data_in->status_rsvd;
642 hdr->flags = cqe_data_in->flags;
643 hdr->residual_count = cpu_to_be32(cqe_data_in->residual_count);
645 if (hdr->cmd_status == SAM_STAT_CHECK_CONDITION) {
646 datalen = cqe_data_in->reserved2 &
647 ISCSI_COMMON_HDR_DATA_SEG_LEN_MASK;
648 memcpy((char *)conn->data, (char *)cmd->sense_buffer, datalen);
651 /* If f/w reports data underrun err then set residual to IO transfer
652 * length, set Underrun flag and clear Overrun flag explicitly
654 if (unlikely(cqe_err_bits &&
655 GET_FIELD(cqe_err_bits, CQE_ERROR_BITMAP_UNDER_RUN_ERR))) {
656 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
657 "Under flow itt=0x%x proto flags=0x%x tid=0x%x cid 0x%x fw resid 0x%x sc dlen 0x%x\n",
658 hdr->itt, cqe_data_in->flags, cmd->task_id,
659 qedi_conn->iscsi_conn_id, hdr->residual_count,
660 scsi_bufflen(sc_cmd));
661 hdr->residual_count = cpu_to_be32(scsi_bufflen(sc_cmd));
662 hdr->flags |= ISCSI_FLAG_CMD_UNDERFLOW;
663 hdr->flags &= (~ISCSI_FLAG_CMD_OVERFLOW);
666 spin_lock(&qedi_conn->list_lock);
667 if (likely(cmd->io_cmd_in_list)) {
668 cmd->io_cmd_in_list = false;
669 list_del_init(&cmd->io_cmd);
670 qedi_conn->active_cmd_count--;
672 spin_unlock(&qedi_conn->list_lock);
674 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
675 "Freeing tid=0x%x for cid=0x%x\n",
676 cmd->task_id, qedi_conn->iscsi_conn_id);
677 cmd->state = RESPONSE_RECEIVED;
679 qedi_trace_io(qedi, task, cmd->task_id, QEDI_IO_TRACE_RSP);
681 qedi_clear_task_idx(qedi, cmd->task_id);
682 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr,
683 conn->data, datalen);
685 spin_unlock_bh(&session->back_lock);
688 static void qedi_mtask_completion(struct qedi_ctx *qedi,
689 union iscsi_cqe *cqe,
690 struct iscsi_task *task,
691 struct qedi_conn *conn, uint16_t que_idx)
693 struct iscsi_conn *iscsi_conn;
696 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte;
697 iscsi_conn = conn->cls_conn->dd_data;
699 switch (hdr_opcode) {
700 case ISCSI_OPCODE_SCSI_RESPONSE:
701 case ISCSI_OPCODE_DATA_IN:
702 qedi_scsi_completion(qedi, cqe, task, iscsi_conn);
704 case ISCSI_OPCODE_LOGIN_RESPONSE:
705 qedi_process_login_resp(qedi, cqe, task, conn);
707 case ISCSI_OPCODE_TMF_RESPONSE:
708 qedi_process_tmf_resp(qedi, cqe, task, conn);
710 case ISCSI_OPCODE_TEXT_RESPONSE:
711 qedi_process_text_resp(qedi, cqe, task, conn);
713 case ISCSI_OPCODE_LOGOUT_RESPONSE:
714 qedi_process_logout_resp(qedi, cqe, task, conn);
716 case ISCSI_OPCODE_NOP_IN:
717 qedi_process_nopin_mesg(qedi, cqe, task, conn, que_idx);
720 QEDI_ERR(&qedi->dbg_ctx, "unknown opcode\n");
724 static void qedi_process_nopin_local_cmpl(struct qedi_ctx *qedi,
725 struct iscsi_cqe_solicited *cqe,
726 struct iscsi_task *task,
727 struct qedi_conn *qedi_conn)
729 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
730 struct iscsi_session *session = conn->session;
731 struct qedi_cmd *cmd = task->dd_data;
733 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UNSOL,
734 "itid=0x%x, cmd task id=0x%x\n",
735 cqe->itid, cmd->task_id);
737 cmd->state = RESPONSE_RECEIVED;
738 qedi_clear_task_idx(qedi, cmd->task_id);
740 spin_lock_bh(&session->back_lock);
741 __iscsi_put_task(task);
742 spin_unlock_bh(&session->back_lock);
745 static void qedi_process_cmd_cleanup_resp(struct qedi_ctx *qedi,
746 struct iscsi_cqe_solicited *cqe,
747 struct iscsi_task *task,
748 struct iscsi_conn *conn)
750 struct qedi_work_map *work, *work_tmp;
751 u32 proto_itt = cqe->itid;
755 struct qedi_cmd *qedi_cmd = NULL;
758 struct qedi_conn *qedi_conn;
759 struct qedi_cmd *dbg_cmd;
760 struct iscsi_task *mtask;
761 struct iscsi_tm *tmf_hdr = NULL;
763 iscsi_cid = cqe->conn_id;
764 qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
766 /* Based on this itt get the corresponding qedi_cmd */
767 spin_lock_bh(&qedi_conn->tmf_work_lock);
768 list_for_each_entry_safe(work, work_tmp, &qedi_conn->tmf_work_list,
770 if (work->rtid == proto_itt) {
771 /* We found the command */
772 qedi_cmd = work->qedi_cmd;
773 if (!qedi_cmd->list_tmf_work) {
774 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
775 "TMF work not found, cqe->tid=0x%x, cid=0x%x\n",
776 proto_itt, qedi_conn->iscsi_conn_id);
780 mtask = qedi_cmd->task;
781 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
784 list_del_init(&work->list);
786 qedi_cmd->list_tmf_work = NULL;
789 spin_unlock_bh(&qedi_conn->tmf_work_lock);
792 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
793 "TMF work, cqe->tid=0x%x, tmf flags=0x%x, cid=0x%x\n",
794 proto_itt, tmf_hdr->flags, qedi_conn->iscsi_conn_id);
796 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
797 ISCSI_TM_FUNC_ABORT_TASK) {
798 spin_lock_bh(&conn->session->back_lock);
800 protoitt = build_itt(get_itt(tmf_hdr->rtt),
802 task = iscsi_itt_to_task(conn, protoitt);
804 spin_unlock_bh(&conn->session->back_lock);
807 QEDI_NOTICE(&qedi->dbg_ctx,
808 "IO task completed, tmf rtt=0x%x, cid=0x%x\n",
809 get_itt(tmf_hdr->rtt),
810 qedi_conn->iscsi_conn_id);
814 dbg_cmd = task->dd_data;
816 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
817 "Abort tmf rtt=0x%x, i/o itt=0x%x, i/o tid=0x%x, cid=0x%x\n",
818 get_itt(tmf_hdr->rtt), get_itt(task->itt),
819 dbg_cmd->task_id, qedi_conn->iscsi_conn_id);
821 if (qedi_cmd->state == CLEANUP_WAIT_FAILED)
822 qedi_cmd->state = CLEANUP_RECV;
824 qedi_clear_task_idx(qedi_conn->qedi, rtid);
826 spin_lock(&qedi_conn->list_lock);
827 list_del_init(&dbg_cmd->io_cmd);
828 qedi_conn->active_cmd_count--;
829 spin_unlock(&qedi_conn->list_lock);
830 qedi_cmd->state = CLEANUP_RECV;
831 wake_up_interruptible(&qedi_conn->wait_queue);
833 } else if (qedi_conn->cmd_cleanup_req > 0) {
834 spin_lock_bh(&conn->session->back_lock);
835 qedi_get_proto_itt(qedi, cqe->itid, &ptmp_itt);
836 protoitt = build_itt(ptmp_itt, conn->session->age);
837 task = iscsi_itt_to_task(conn, protoitt);
838 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
839 "cleanup io itid=0x%x, protoitt=0x%x, cmd_cleanup_cmpl=%d, cid=0x%x\n",
840 cqe->itid, protoitt, qedi_conn->cmd_cleanup_cmpl,
841 qedi_conn->iscsi_conn_id);
843 spin_unlock_bh(&conn->session->back_lock);
845 QEDI_NOTICE(&qedi->dbg_ctx,
846 "task is null, itid=0x%x, cid=0x%x\n",
847 cqe->itid, qedi_conn->iscsi_conn_id);
850 qedi_conn->cmd_cleanup_cmpl++;
851 wake_up(&qedi_conn->wait_queue);
853 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
854 "Freeing tid=0x%x for cid=0x%x\n",
855 cqe->itid, qedi_conn->iscsi_conn_id);
856 qedi_clear_task_idx(qedi_conn->qedi, cqe->itid);
859 qedi_get_proto_itt(qedi, cqe->itid, &ptmp_itt);
860 protoitt = build_itt(ptmp_itt, conn->session->age);
861 task = iscsi_itt_to_task(conn, protoitt);
862 QEDI_ERR(&qedi->dbg_ctx,
863 "Delayed or untracked cleanup response, itt=0x%x, tid=0x%x, cid=0x%x, task=%p\n",
864 protoitt, cqe->itid, qedi_conn->iscsi_conn_id, task);
868 void qedi_fp_process_cqes(struct qedi_work *work)
870 struct qedi_ctx *qedi = work->qedi;
871 union iscsi_cqe *cqe = &work->cqe;
872 struct iscsi_task *task = NULL;
873 struct iscsi_nopout *nopout_hdr;
874 struct qedi_conn *q_conn;
875 struct iscsi_conn *conn;
876 struct qedi_cmd *qedi_cmd;
880 u16 que_idx = work->que_idx;
883 comp_type = cqe->cqe_common.cqe_type;
884 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte;
886 cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits;
888 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
889 "fw_cid=0x%x, cqe type=0x%x, opcode=0x%x\n",
890 cqe->cqe_common.conn_id, comp_type, hdr_opcode);
892 if (comp_type >= MAX_ISCSI_CQES_TYPE) {
893 QEDI_WARN(&qedi->dbg_ctx, "Invalid CqE type\n");
897 iscsi_cid = cqe->cqe_common.conn_id;
898 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
900 QEDI_WARN(&qedi->dbg_ctx,
901 "Session no longer exists for cid=0x%x!!\n",
906 conn = q_conn->cls_conn->dd_data;
908 if (unlikely(cqe_err_bits &&
909 GET_FIELD(cqe_err_bits,
910 CQE_ERROR_BITMAP_DATA_DIGEST_ERR))) {
911 iscsi_conn_failure(conn, ISCSI_ERR_DATA_DGST);
916 case ISCSI_CQE_TYPE_SOLICITED:
917 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
918 qedi_cmd = container_of(work, struct qedi_cmd, cqe_work);
919 task = qedi_cmd->task;
921 QEDI_WARN(&qedi->dbg_ctx, "task is NULL\n");
925 /* Process NOPIN local completion */
926 nopout_hdr = (struct iscsi_nopout *)task->hdr;
927 if ((nopout_hdr->itt == RESERVED_ITT) &&
928 (cqe->cqe_solicited.itid != (u16)RESERVED_ITT)) {
929 qedi_process_nopin_local_cmpl(qedi, &cqe->cqe_solicited,
932 cqe->cqe_solicited.itid =
933 qedi_get_itt(cqe->cqe_solicited);
934 /* Process other solicited responses */
935 qedi_mtask_completion(qedi, cqe, task, q_conn, que_idx);
938 case ISCSI_CQE_TYPE_UNSOLICITED:
939 switch (hdr_opcode) {
940 case ISCSI_OPCODE_NOP_IN:
941 qedi_process_nopin_mesg(qedi, cqe, task, q_conn,
944 case ISCSI_OPCODE_ASYNC_MSG:
945 qedi_process_async_mesg(qedi, cqe, task, q_conn,
948 case ISCSI_OPCODE_REJECT:
949 qedi_process_reject_mesg(qedi, cqe, task, q_conn,
953 goto exit_fp_process;
954 case ISCSI_CQE_TYPE_DUMMY:
955 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "Dummy CqE\n");
956 goto exit_fp_process;
957 case ISCSI_CQE_TYPE_TASK_CLEANUP:
958 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "CleanUp CqE\n");
959 qedi_process_cmd_cleanup_resp(qedi, &cqe->cqe_solicited, task,
961 goto exit_fp_process;
963 QEDI_ERR(&qedi->dbg_ctx, "Error cqe.\n");
971 static void qedi_ring_doorbell(struct qedi_conn *qedi_conn)
973 struct iscsi_db_data dbell = { 0 };
977 dbell.params |= DB_DEST_XCM << ISCSI_DB_DATA_DEST_SHIFT;
978 dbell.params |= DB_AGG_CMD_SET << ISCSI_DB_DATA_AGG_CMD_SHIFT;
980 DQ_XCM_ISCSI_SQ_PROD_CMD << ISCSI_DB_DATA_AGG_VAL_SEL_SHIFT;
982 dbell.sq_prod = qedi_conn->ep->fw_sq_prod_idx;
983 writel(*(u32 *)&dbell, qedi_conn->ep->p_doorbell);
985 /* Make sure fw write idx is coherent, and include both memory barriers
986 * as a failsafe as for some architectures the call is the same but on
987 * others they are two different assembly operations.
991 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_MP_REQ,
992 "prod_idx=0x%x, fw_prod_idx=0x%x, cid=0x%x\n",
993 qedi_conn->ep->sq_prod_idx, qedi_conn->ep->fw_sq_prod_idx,
994 qedi_conn->iscsi_conn_id);
997 static u16 qedi_get_wqe_idx(struct qedi_conn *qedi_conn)
999 struct qedi_endpoint *ep;
1003 rval = ep->sq_prod_idx;
1005 /* Increament SQ index */
1007 ep->fw_sq_prod_idx++;
1008 if (ep->sq_prod_idx == QEDI_SQ_SIZE)
1009 ep->sq_prod_idx = 0;
1014 int qedi_send_iscsi_login(struct qedi_conn *qedi_conn,
1015 struct iscsi_task *task)
1017 struct iscsi_login_req_hdr login_req_pdu_header;
1018 struct scsi_sgl_task_params tx_sgl_task_params;
1019 struct scsi_sgl_task_params rx_sgl_task_params;
1020 struct iscsi_task_params task_params;
1021 struct e4_iscsi_task_context *fw_task_ctx;
1022 struct qedi_ctx *qedi = qedi_conn->qedi;
1023 struct iscsi_login_req *login_hdr;
1024 struct scsi_sge *resp_sge = NULL;
1025 struct qedi_cmd *qedi_cmd;
1026 struct qedi_endpoint *ep;
1031 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1032 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1034 login_hdr = (struct iscsi_login_req *)task->hdr;
1036 tid = qedi_get_task_idx(qedi);
1041 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
1043 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
1045 qedi_cmd->task_id = tid;
1047 memset(&task_params, 0, sizeof(task_params));
1048 memset(&login_req_pdu_header, 0, sizeof(login_req_pdu_header));
1049 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1050 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1051 /* Update header info */
1052 login_req_pdu_header.opcode = login_hdr->opcode;
1053 login_req_pdu_header.version_min = login_hdr->min_version;
1054 login_req_pdu_header.version_max = login_hdr->max_version;
1055 login_req_pdu_header.flags_attr = login_hdr->flags;
1056 login_req_pdu_header.isid_tabc = swab32p((u32 *)login_hdr->isid);
1057 login_req_pdu_header.isid_d = swab16p((u16 *)&login_hdr->isid[4]);
1059 login_req_pdu_header.tsih = login_hdr->tsih;
1060 login_req_pdu_header.hdr_second_dword = ntoh24(login_hdr->dlength);
1062 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1063 login_req_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1064 login_req_pdu_header.cid = qedi_conn->iscsi_conn_id;
1065 login_req_pdu_header.cmd_sn = be32_to_cpu(login_hdr->cmdsn);
1066 login_req_pdu_header.exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn);
1067 login_req_pdu_header.exp_stat_sn = 0;
1069 /* Fill tx AHS and rx buffer */
1070 tx_sgl_task_params.sgl =
1071 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1072 tx_sgl_task_params.sgl_phys_addr.lo =
1073 (u32)(qedi_conn->gen_pdu.req_dma_addr);
1074 tx_sgl_task_params.sgl_phys_addr.hi =
1075 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
1076 tx_sgl_task_params.total_buffer_size = ntoh24(login_hdr->dlength);
1077 tx_sgl_task_params.num_sges = 1;
1079 rx_sgl_task_params.sgl =
1080 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1081 rx_sgl_task_params.sgl_phys_addr.lo =
1082 (u32)(qedi_conn->gen_pdu.resp_dma_addr);
1083 rx_sgl_task_params.sgl_phys_addr.hi =
1084 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
1085 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len;
1086 rx_sgl_task_params.num_sges = 1;
1088 /* Fill fw input params */
1089 task_params.context = fw_task_ctx;
1090 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1091 task_params.itid = tid;
1092 task_params.cq_rss_number = 0;
1093 task_params.tx_io_size = ntoh24(login_hdr->dlength);
1094 task_params.rx_io_size = resp_sge->sge_len;
1096 sq_idx = qedi_get_wqe_idx(qedi_conn);
1097 task_params.sqe = &ep->sq[sq_idx];
1099 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1100 rval = init_initiator_login_request_task(&task_params,
1101 &login_req_pdu_header,
1102 &tx_sgl_task_params,
1103 &rx_sgl_task_params);
1107 spin_lock(&qedi_conn->list_lock);
1108 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1109 qedi_cmd->io_cmd_in_list = true;
1110 qedi_conn->active_cmd_count++;
1111 spin_unlock(&qedi_conn->list_lock);
1113 qedi_ring_doorbell(qedi_conn);
1117 int qedi_send_iscsi_logout(struct qedi_conn *qedi_conn,
1118 struct iscsi_task *task)
1120 struct iscsi_logout_req_hdr logout_pdu_header;
1121 struct scsi_sgl_task_params tx_sgl_task_params;
1122 struct scsi_sgl_task_params rx_sgl_task_params;
1123 struct iscsi_task_params task_params;
1124 struct e4_iscsi_task_context *fw_task_ctx;
1125 struct iscsi_logout *logout_hdr = NULL;
1126 struct qedi_ctx *qedi = qedi_conn->qedi;
1127 struct qedi_cmd *qedi_cmd;
1128 struct qedi_endpoint *ep;
1133 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1134 logout_hdr = (struct iscsi_logout *)task->hdr;
1137 tid = qedi_get_task_idx(qedi);
1142 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
1144 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
1146 qedi_cmd->task_id = tid;
1148 memset(&task_params, 0, sizeof(task_params));
1149 memset(&logout_pdu_header, 0, sizeof(logout_pdu_header));
1150 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1151 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1153 /* Update header info */
1154 logout_pdu_header.opcode = logout_hdr->opcode;
1155 logout_pdu_header.reason_code = 0x80 | logout_hdr->flags;
1156 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1157 logout_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1158 logout_pdu_header.exp_stat_sn = be32_to_cpu(logout_hdr->exp_statsn);
1159 logout_pdu_header.cmd_sn = be32_to_cpu(logout_hdr->cmdsn);
1160 logout_pdu_header.cid = qedi_conn->iscsi_conn_id;
1162 /* Fill fw input params */
1163 task_params.context = fw_task_ctx;
1164 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1165 task_params.itid = tid;
1166 task_params.cq_rss_number = 0;
1167 task_params.tx_io_size = 0;
1168 task_params.rx_io_size = 0;
1170 sq_idx = qedi_get_wqe_idx(qedi_conn);
1171 task_params.sqe = &ep->sq[sq_idx];
1172 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1174 rval = init_initiator_logout_request_task(&task_params,
1180 spin_lock(&qedi_conn->list_lock);
1181 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1182 qedi_cmd->io_cmd_in_list = true;
1183 qedi_conn->active_cmd_count++;
1184 spin_unlock(&qedi_conn->list_lock);
1186 qedi_ring_doorbell(qedi_conn);
1190 int qedi_cleanup_all_io(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn,
1191 struct iscsi_task *task, bool in_recovery)
1194 struct iscsi_task *ctask;
1195 struct qedi_cmd *cmd, *cmd_tmp;
1196 struct iscsi_tm *tmf_hdr;
1197 unsigned int lun = 0;
1198 bool lun_reset = false;
1199 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
1200 struct iscsi_session *session = conn->session;
1202 /* From recovery, task is NULL or from tmf resp valid task */
1204 tmf_hdr = (struct iscsi_tm *)task->hdr;
1206 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1207 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) {
1209 lun = scsilun_to_int(&tmf_hdr->lun);
1213 qedi_conn->cmd_cleanup_req = 0;
1214 qedi_conn->cmd_cleanup_cmpl = 0;
1216 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1217 "active_cmd_count=%d, cid=0x%x, in_recovery=%d, lun_reset=%d\n",
1218 qedi_conn->active_cmd_count, qedi_conn->iscsi_conn_id,
1219 in_recovery, lun_reset);
1222 spin_lock_bh(&session->back_lock);
1224 spin_lock(&qedi_conn->list_lock);
1226 list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list,
1233 if (cmd->scsi_cmd && cmd->scsi_cmd->device) {
1234 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1235 "tid=0x%x itt=0x%x scsi_cmd_ptr=%p device=%p task_state=%d cmd_state=0%x cid=0x%x\n",
1236 cmd->task_id, get_itt(ctask->itt),
1237 cmd->scsi_cmd, cmd->scsi_cmd->device,
1238 ctask->state, cmd->state,
1239 qedi_conn->iscsi_conn_id);
1240 if (cmd->scsi_cmd->device->lun != lun)
1244 qedi_conn->cmd_cleanup_req++;
1245 qedi_iscsi_cleanup_task(ctask, true);
1247 list_del_init(&cmd->io_cmd);
1248 qedi_conn->active_cmd_count--;
1249 QEDI_WARN(&qedi->dbg_ctx,
1250 "Deleted active cmd list node io_cmd=%p, cid=0x%x\n",
1251 &cmd->io_cmd, qedi_conn->iscsi_conn_id);
1254 spin_unlock(&qedi_conn->list_lock);
1257 spin_unlock_bh(&session->back_lock);
1259 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1260 "cmd_cleanup_req=%d, cid=0x%x\n",
1261 qedi_conn->cmd_cleanup_req,
1262 qedi_conn->iscsi_conn_id);
1264 rval = wait_event_interruptible_timeout(qedi_conn->wait_queue,
1265 ((qedi_conn->cmd_cleanup_req ==
1266 qedi_conn->cmd_cleanup_cmpl) ||
1270 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1271 "i/o cmd_cleanup_req=%d, 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);
1279 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1280 "i/o cmd_cleanup_req=%d, not equal to cmd_cleanup_cmpl=%d, cid=0x%x\n",
1281 qedi_conn->cmd_cleanup_req,
1282 qedi_conn->cmd_cleanup_cmpl,
1283 qedi_conn->iscsi_conn_id);
1285 iscsi_host_for_each_session(qedi->shost,
1286 qedi_mark_device_missing);
1287 qedi_ops->common->drain(qedi->cdev);
1289 /* Enable IOs for all other sessions except current.*/
1290 if (!wait_event_interruptible_timeout(qedi_conn->wait_queue,
1291 (qedi_conn->cmd_cleanup_req ==
1292 qedi_conn->cmd_cleanup_cmpl),
1294 iscsi_host_for_each_session(qedi->shost,
1295 qedi_mark_device_available);
1299 iscsi_host_for_each_session(qedi->shost,
1300 qedi_mark_device_available);
1305 void qedi_clearsq(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn,
1306 struct iscsi_task *task)
1308 struct qedi_endpoint *qedi_ep;
1311 qedi_ep = qedi_conn->ep;
1312 qedi_conn->cmd_cleanup_req = 0;
1313 qedi_conn->cmd_cleanup_cmpl = 0;
1316 QEDI_WARN(&qedi->dbg_ctx,
1317 "Cannot proceed, ep already disconnected, cid=0x%x\n",
1318 qedi_conn->iscsi_conn_id);
1322 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1323 "Clearing SQ for cid=0x%x, conn=%p, ep=%p\n",
1324 qedi_conn->iscsi_conn_id, qedi_conn, qedi_ep);
1326 qedi_ops->clear_sq(qedi->cdev, qedi_ep->handle);
1328 rval = qedi_cleanup_all_io(qedi, qedi_conn, task, true);
1330 QEDI_ERR(&qedi->dbg_ctx,
1331 "fatal error, need hard reset, cid=0x%x\n",
1332 qedi_conn->iscsi_conn_id);
1337 static int qedi_wait_for_cleanup_request(struct qedi_ctx *qedi,
1338 struct qedi_conn *qedi_conn,
1339 struct iscsi_task *task,
1340 struct qedi_cmd *qedi_cmd,
1341 struct qedi_work_map *list_work)
1343 struct qedi_cmd *cmd = (struct qedi_cmd *)task->dd_data;
1346 wait = wait_event_interruptible_timeout(qedi_conn->wait_queue,
1347 ((qedi_cmd->state ==
1349 ((qedi_cmd->type == TYPEIO) &&
1351 RESPONSE_RECEIVED))),
1354 qedi_cmd->state = CLEANUP_WAIT_FAILED;
1356 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1357 "Cleanup timedout tid=0x%x, issue connection recovery, cid=0x%x\n",
1358 cmd->task_id, qedi_conn->iscsi_conn_id);
1365 static void qedi_tmf_work(struct work_struct *work)
1367 struct qedi_cmd *qedi_cmd =
1368 container_of(work, struct qedi_cmd, tmf_work);
1369 struct qedi_conn *qedi_conn = qedi_cmd->conn;
1370 struct qedi_ctx *qedi = qedi_conn->qedi;
1371 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
1372 struct iscsi_cls_session *cls_sess;
1373 struct qedi_work_map *list_work = NULL;
1374 struct iscsi_task *mtask;
1375 struct qedi_cmd *cmd;
1376 struct iscsi_task *ctask;
1377 struct iscsi_tm *tmf_hdr;
1381 mtask = qedi_cmd->task;
1382 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
1383 cls_sess = iscsi_conn_to_session(qedi_conn->cls_conn);
1384 set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
1386 ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt);
1387 if (!ctask || !ctask->sc) {
1388 QEDI_ERR(&qedi->dbg_ctx, "Task already completed\n");
1392 cmd = (struct qedi_cmd *)ctask->dd_data;
1393 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1394 "Abort tmf rtt=0x%x, cmd itt=0x%x, cmd tid=0x%x, cid=0x%x\n",
1395 get_itt(tmf_hdr->rtt), get_itt(ctask->itt), cmd->task_id,
1396 qedi_conn->iscsi_conn_id);
1398 if (qedi_do_not_recover) {
1399 QEDI_ERR(&qedi->dbg_ctx, "DONT SEND CLEANUP/ABORT %d\n",
1400 qedi_do_not_recover);
1404 list_work = kzalloc(sizeof(*list_work), GFP_ATOMIC);
1406 QEDI_ERR(&qedi->dbg_ctx, "Memory allocation failed\n");
1410 qedi_cmd->type = TYPEIO;
1411 list_work->qedi_cmd = qedi_cmd;
1412 list_work->rtid = cmd->task_id;
1413 list_work->state = QEDI_WORK_SCHEDULED;
1414 qedi_cmd->list_tmf_work = list_work;
1416 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1417 "Queue tmf work=%p, list node=%p, cid=0x%x, tmf flags=0x%x\n",
1418 list_work->ptr_tmf_work, list_work, qedi_conn->iscsi_conn_id,
1421 spin_lock_bh(&qedi_conn->tmf_work_lock);
1422 list_add_tail(&list_work->list, &qedi_conn->tmf_work_list);
1423 spin_unlock_bh(&qedi_conn->tmf_work_lock);
1425 qedi_iscsi_cleanup_task(ctask, false);
1427 rval = qedi_wait_for_cleanup_request(qedi, qedi_conn, ctask, qedi_cmd,
1430 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1431 "FW cleanup got escalated, cid=0x%x\n",
1432 qedi_conn->iscsi_conn_id);
1436 tid = qedi_get_task_idx(qedi);
1438 QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n",
1439 qedi_conn->iscsi_conn_id);
1443 qedi_cmd->task_id = tid;
1444 qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task);
1447 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
1451 spin_lock_bh(&qedi_conn->tmf_work_lock);
1452 if (!qedi_cmd->list_tmf_work) {
1453 list_del_init(&list_work->list);
1454 qedi_cmd->list_tmf_work = NULL;
1457 spin_unlock_bh(&qedi_conn->tmf_work_lock);
1459 spin_lock(&qedi_conn->list_lock);
1460 list_del_init(&cmd->io_cmd);
1461 qedi_conn->active_cmd_count--;
1462 spin_unlock(&qedi_conn->list_lock);
1464 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
1467 static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn,
1468 struct iscsi_task *mtask)
1470 struct iscsi_tmf_request_hdr tmf_pdu_header;
1471 struct iscsi_task_params task_params;
1472 struct qedi_ctx *qedi = qedi_conn->qedi;
1473 struct e4_iscsi_task_context *fw_task_ctx;
1474 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
1475 struct iscsi_task *ctask;
1476 struct iscsi_tm *tmf_hdr;
1477 struct qedi_cmd *qedi_cmd;
1478 struct qedi_cmd *cmd;
1479 struct qedi_endpoint *ep;
1485 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
1486 qedi_cmd = (struct qedi_cmd *)mtask->dd_data;
1491 tid = qedi_get_task_idx(qedi);
1496 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
1498 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
1500 qedi_cmd->task_id = tid;
1502 memset(&task_params, 0, sizeof(task_params));
1503 memset(&tmf_pdu_header, 0, sizeof(tmf_pdu_header));
1505 /* Update header info */
1506 qedi_update_itt_map(qedi, tid, mtask->itt, qedi_cmd);
1507 tmf_pdu_header.itt = qedi_set_itt(tid, get_itt(mtask->itt));
1508 tmf_pdu_header.cmd_sn = be32_to_cpu(tmf_hdr->cmdsn);
1510 memcpy(scsi_lun, &tmf_hdr->lun, sizeof(struct scsi_lun));
1511 tmf_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]);
1512 tmf_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]);
1514 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1515 ISCSI_TM_FUNC_ABORT_TASK) {
1516 ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt);
1517 if (!ctask || !ctask->sc) {
1518 QEDI_ERR(&qedi->dbg_ctx,
1519 "Could not get reference task\n");
1522 cmd = (struct qedi_cmd *)ctask->dd_data;
1523 tmf_pdu_header.rtt =
1524 qedi_set_itt(cmd->task_id,
1525 get_itt(tmf_hdr->rtt));
1527 tmf_pdu_header.rtt = ISCSI_RESERVED_TAG;
1530 tmf_pdu_header.opcode = tmf_hdr->opcode;
1531 tmf_pdu_header.function = tmf_hdr->flags;
1532 tmf_pdu_header.hdr_second_dword = ntoh24(tmf_hdr->dlength);
1533 tmf_pdu_header.ref_cmd_sn = be32_to_cpu(tmf_hdr->refcmdsn);
1535 /* Fill fw input params */
1536 task_params.context = fw_task_ctx;
1537 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1538 task_params.itid = tid;
1539 task_params.cq_rss_number = 0;
1540 task_params.tx_io_size = 0;
1541 task_params.rx_io_size = 0;
1543 sq_idx = qedi_get_wqe_idx(qedi_conn);
1544 task_params.sqe = &ep->sq[sq_idx];
1546 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1547 rval = init_initiator_tmf_request_task(&task_params,
1552 spin_lock(&qedi_conn->list_lock);
1553 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1554 qedi_cmd->io_cmd_in_list = true;
1555 qedi_conn->active_cmd_count++;
1556 spin_unlock(&qedi_conn->list_lock);
1558 qedi_ring_doorbell(qedi_conn);
1562 int qedi_iscsi_abort_work(struct qedi_conn *qedi_conn,
1563 struct iscsi_task *mtask)
1565 struct qedi_ctx *qedi = qedi_conn->qedi;
1566 struct iscsi_tm *tmf_hdr;
1567 struct qedi_cmd *qedi_cmd = (struct qedi_cmd *)mtask->dd_data;
1570 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
1571 qedi_cmd->task = mtask;
1573 /* If abort task then schedule the work and return */
1574 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1575 ISCSI_TM_FUNC_ABORT_TASK) {
1576 qedi_cmd->state = CLEANUP_WAIT;
1577 INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_work);
1578 queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work);
1580 } else if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1581 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) ||
1582 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1583 ISCSI_TM_FUNC_TARGET_WARM_RESET) ||
1584 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1585 ISCSI_TM_FUNC_TARGET_COLD_RESET)) {
1586 tid = qedi_get_task_idx(qedi);
1588 QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n",
1589 qedi_conn->iscsi_conn_id);
1592 qedi_cmd->task_id = tid;
1594 qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task);
1597 QEDI_ERR(&qedi->dbg_ctx, "Invalid tmf, cid=0x%x\n",
1598 qedi_conn->iscsi_conn_id);
1605 int qedi_send_iscsi_text(struct qedi_conn *qedi_conn,
1606 struct iscsi_task *task)
1608 struct iscsi_text_request_hdr text_request_pdu_header;
1609 struct scsi_sgl_task_params tx_sgl_task_params;
1610 struct scsi_sgl_task_params rx_sgl_task_params;
1611 struct iscsi_task_params task_params;
1612 struct e4_iscsi_task_context *fw_task_ctx;
1613 struct qedi_ctx *qedi = qedi_conn->qedi;
1614 struct iscsi_text *text_hdr;
1615 struct scsi_sge *req_sge = NULL;
1616 struct scsi_sge *resp_sge = NULL;
1617 struct qedi_cmd *qedi_cmd;
1618 struct qedi_endpoint *ep;
1623 req_sge = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1624 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1625 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1626 text_hdr = (struct iscsi_text *)task->hdr;
1629 tid = qedi_get_task_idx(qedi);
1634 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
1636 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
1638 qedi_cmd->task_id = tid;
1640 memset(&task_params, 0, sizeof(task_params));
1641 memset(&text_request_pdu_header, 0, sizeof(text_request_pdu_header));
1642 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1643 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1645 /* Update header info */
1646 text_request_pdu_header.opcode = text_hdr->opcode;
1647 text_request_pdu_header.flags_attr = text_hdr->flags;
1649 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1650 text_request_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1651 text_request_pdu_header.ttt = text_hdr->ttt;
1652 text_request_pdu_header.cmd_sn = be32_to_cpu(text_hdr->cmdsn);
1653 text_request_pdu_header.exp_stat_sn = be32_to_cpu(text_hdr->exp_statsn);
1654 text_request_pdu_header.hdr_second_dword = ntoh24(text_hdr->dlength);
1656 /* Fill tx AHS and rx buffer */
1657 tx_sgl_task_params.sgl =
1658 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1659 tx_sgl_task_params.sgl_phys_addr.lo =
1660 (u32)(qedi_conn->gen_pdu.req_dma_addr);
1661 tx_sgl_task_params.sgl_phys_addr.hi =
1662 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
1663 tx_sgl_task_params.total_buffer_size = req_sge->sge_len;
1664 tx_sgl_task_params.num_sges = 1;
1666 rx_sgl_task_params.sgl =
1667 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1668 rx_sgl_task_params.sgl_phys_addr.lo =
1669 (u32)(qedi_conn->gen_pdu.resp_dma_addr);
1670 rx_sgl_task_params.sgl_phys_addr.hi =
1671 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
1672 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len;
1673 rx_sgl_task_params.num_sges = 1;
1675 /* Fill fw input params */
1676 task_params.context = fw_task_ctx;
1677 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1678 task_params.itid = tid;
1679 task_params.cq_rss_number = 0;
1680 task_params.tx_io_size = ntoh24(text_hdr->dlength);
1681 task_params.rx_io_size = resp_sge->sge_len;
1683 sq_idx = qedi_get_wqe_idx(qedi_conn);
1684 task_params.sqe = &ep->sq[sq_idx];
1686 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1687 rval = init_initiator_text_request_task(&task_params,
1688 &text_request_pdu_header,
1689 &tx_sgl_task_params,
1690 &rx_sgl_task_params);
1694 spin_lock(&qedi_conn->list_lock);
1695 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1696 qedi_cmd->io_cmd_in_list = true;
1697 qedi_conn->active_cmd_count++;
1698 spin_unlock(&qedi_conn->list_lock);
1700 qedi_ring_doorbell(qedi_conn);
1704 int qedi_send_iscsi_nopout(struct qedi_conn *qedi_conn,
1705 struct iscsi_task *task,
1706 char *datap, int data_len, int unsol)
1708 struct iscsi_nop_out_hdr nop_out_pdu_header;
1709 struct scsi_sgl_task_params tx_sgl_task_params;
1710 struct scsi_sgl_task_params rx_sgl_task_params;
1711 struct iscsi_task_params task_params;
1712 struct qedi_ctx *qedi = qedi_conn->qedi;
1713 struct e4_iscsi_task_context *fw_task_ctx;
1714 struct iscsi_nopout *nopout_hdr;
1715 struct scsi_sge *resp_sge = NULL;
1716 struct qedi_cmd *qedi_cmd;
1717 struct qedi_endpoint *ep;
1723 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1724 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1725 nopout_hdr = (struct iscsi_nopout *)task->hdr;
1728 tid = qedi_get_task_idx(qedi);
1733 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
1735 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
1737 qedi_cmd->task_id = tid;
1739 memset(&task_params, 0, sizeof(task_params));
1740 memset(&nop_out_pdu_header, 0, sizeof(nop_out_pdu_header));
1741 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1742 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1744 /* Update header info */
1745 nop_out_pdu_header.opcode = nopout_hdr->opcode;
1746 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_CONST1, 1);
1747 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_RSRV, 0);
1749 memcpy(scsi_lun, &nopout_hdr->lun, sizeof(struct scsi_lun));
1750 nop_out_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]);
1751 nop_out_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]);
1752 nop_out_pdu_header.cmd_sn = be32_to_cpu(nopout_hdr->cmdsn);
1753 nop_out_pdu_header.exp_stat_sn = be32_to_cpu(nopout_hdr->exp_statsn);
1755 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1757 if (nopout_hdr->ttt != ISCSI_TTT_ALL_ONES) {
1758 nop_out_pdu_header.itt = be32_to_cpu(nopout_hdr->itt);
1759 nop_out_pdu_header.ttt = be32_to_cpu(nopout_hdr->ttt);
1761 nop_out_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1762 nop_out_pdu_header.ttt = ISCSI_TTT_ALL_ONES;
1764 spin_lock(&qedi_conn->list_lock);
1765 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1766 qedi_cmd->io_cmd_in_list = true;
1767 qedi_conn->active_cmd_count++;
1768 spin_unlock(&qedi_conn->list_lock);
1771 /* Fill tx AHS and rx buffer */
1773 tx_sgl_task_params.sgl =
1774 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1775 tx_sgl_task_params.sgl_phys_addr.lo =
1776 (u32)(qedi_conn->gen_pdu.req_dma_addr);
1777 tx_sgl_task_params.sgl_phys_addr.hi =
1778 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
1779 tx_sgl_task_params.total_buffer_size = data_len;
1780 tx_sgl_task_params.num_sges = 1;
1782 rx_sgl_task_params.sgl =
1783 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1784 rx_sgl_task_params.sgl_phys_addr.lo =
1785 (u32)(qedi_conn->gen_pdu.resp_dma_addr);
1786 rx_sgl_task_params.sgl_phys_addr.hi =
1787 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
1788 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len;
1789 rx_sgl_task_params.num_sges = 1;
1792 /* Fill fw input params */
1793 task_params.context = fw_task_ctx;
1794 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1795 task_params.itid = tid;
1796 task_params.cq_rss_number = 0;
1797 task_params.tx_io_size = data_len;
1798 task_params.rx_io_size = resp_sge->sge_len;
1800 sq_idx = qedi_get_wqe_idx(qedi_conn);
1801 task_params.sqe = &ep->sq[sq_idx];
1803 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1804 rval = init_initiator_nop_out_task(&task_params,
1805 &nop_out_pdu_header,
1806 &tx_sgl_task_params,
1807 &rx_sgl_task_params);
1811 qedi_ring_doorbell(qedi_conn);
1815 static int qedi_split_bd(struct qedi_cmd *cmd, u64 addr, int sg_len,
1818 struct scsi_sge *bd = cmd->io_tbl.sge_tbl;
1819 int frag_size, sg_frags;
1824 if (addr % QEDI_PAGE_SIZE)
1826 (QEDI_PAGE_SIZE - (addr % QEDI_PAGE_SIZE));
1828 frag_size = (sg_len > QEDI_BD_SPLIT_SZ) ? 0 :
1829 (sg_len % QEDI_BD_SPLIT_SZ);
1832 frag_size = QEDI_BD_SPLIT_SZ;
1834 bd[bd_index + sg_frags].sge_addr.lo = (addr & 0xffffffff);
1835 bd[bd_index + sg_frags].sge_addr.hi = (addr >> 32);
1836 bd[bd_index + sg_frags].sge_len = (u16)frag_size;
1837 QEDI_INFO(&cmd->conn->qedi->dbg_ctx, QEDI_LOG_IO,
1838 "split sge %d: addr=%llx, len=%x",
1839 (bd_index + sg_frags), addr, frag_size);
1841 addr += (u64)frag_size;
1843 sg_len -= frag_size;
1848 static int qedi_map_scsi_sg(struct qedi_ctx *qedi, struct qedi_cmd *cmd)
1850 struct scsi_cmnd *sc = cmd->scsi_cmd;
1851 struct scsi_sge *bd = cmd->io_tbl.sge_tbl;
1852 struct scatterlist *sg;
1861 WARN_ON(scsi_sg_count(sc) > QEDI_ISCSI_MAX_BDS_PER_CMD);
1863 sg_count = dma_map_sg(&qedi->pdev->dev, scsi_sglist(sc),
1864 scsi_sg_count(sc), sc->sc_data_direction);
1867 * New condition to send single SGE as cached-SGL.
1868 * Single SGE with length less than 64K.
1870 sg = scsi_sglist(sc);
1871 if ((sg_count == 1) && (sg_dma_len(sg) <= MAX_SGLEN_FOR_CACHESGL)) {
1872 sg_len = sg_dma_len(sg);
1873 addr = (u64)sg_dma_address(sg);
1875 bd[bd_count].sge_addr.lo = (addr & 0xffffffff);
1876 bd[bd_count].sge_addr.hi = (addr >> 32);
1877 bd[bd_count].sge_len = (u16)sg_len;
1879 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1880 "single-cashed-sgl: bd_count:%d addr=%llx, len=%x",
1881 sg_count, addr, sg_len);
1886 scsi_for_each_sg(sc, sg, sg_count, i) {
1887 sg_len = sg_dma_len(sg);
1888 addr = (u64)sg_dma_address(sg);
1889 end_addr = (addr + sg_len);
1892 * first sg elem in the 'list',
1893 * check if end addr is page-aligned.
1895 if ((i == 0) && (sg_count > 1) && (end_addr % QEDI_PAGE_SIZE))
1896 cmd->use_slowpath = true;
1899 * last sg elem in the 'list',
1900 * check if start addr is page-aligned.
1902 else if ((i == (sg_count - 1)) &&
1903 (sg_count > 1) && (addr % QEDI_PAGE_SIZE))
1904 cmd->use_slowpath = true;
1907 * middle sg elements in list,
1908 * check if start and end addr is page-aligned
1910 else if ((i != 0) && (i != (sg_count - 1)) &&
1911 ((addr % QEDI_PAGE_SIZE) ||
1912 (end_addr % QEDI_PAGE_SIZE)))
1913 cmd->use_slowpath = true;
1915 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "sg[%d] size=0x%x",
1918 if (sg_len > QEDI_BD_SPLIT_SZ) {
1919 sg_frags = qedi_split_bd(cmd, addr, sg_len, bd_count);
1922 bd[bd_count].sge_addr.lo = addr & 0xffffffff;
1923 bd[bd_count].sge_addr.hi = addr >> 32;
1924 bd[bd_count].sge_len = sg_len;
1926 byte_count += sg_len;
1927 bd_count += sg_frags;
1930 if (byte_count != scsi_bufflen(sc))
1931 QEDI_ERR(&qedi->dbg_ctx,
1932 "byte_count = %d != scsi_bufflen = %d\n", byte_count,
1935 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "byte_count = %d\n",
1938 WARN_ON(byte_count != scsi_bufflen(sc));
1943 static void qedi_iscsi_map_sg_list(struct qedi_cmd *cmd)
1946 struct scsi_cmnd *sc = cmd->scsi_cmd;
1948 if (scsi_sg_count(sc)) {
1949 bd_count = qedi_map_scsi_sg(cmd->conn->qedi, cmd);
1953 struct scsi_sge *bd = cmd->io_tbl.sge_tbl;
1955 bd[0].sge_addr.lo = 0;
1956 bd[0].sge_addr.hi = 0;
1960 cmd->io_tbl.sge_valid = bd_count;
1963 static void qedi_cpy_scsi_cdb(struct scsi_cmnd *sc, u32 *dstp)
1969 lpcnt = sc->cmd_len / sizeof(dword);
1970 srcp = (u8 *)sc->cmnd;
1972 memcpy(&dword, (const void *)srcp, 4);
1973 *dstp = cpu_to_be32(dword);
1977 if (sc->cmd_len & 0x3) {
1978 dword = (u32)srcp[0] | ((u32)srcp[1] << 8);
1979 *dstp = cpu_to_be32(dword);
1983 void qedi_trace_io(struct qedi_ctx *qedi, struct iscsi_task *task,
1984 u16 tid, int8_t direction)
1986 struct qedi_io_log *io_log;
1987 struct iscsi_conn *conn = task->conn;
1988 struct qedi_conn *qedi_conn = conn->dd_data;
1989 struct scsi_cmnd *sc_cmd = task->sc;
1990 unsigned long flags;
1992 spin_lock_irqsave(&qedi->io_trace_lock, flags);
1994 io_log = &qedi->io_trace_buf[qedi->io_trace_idx];
1995 io_log->direction = direction;
1996 io_log->task_id = tid;
1997 io_log->cid = qedi_conn->iscsi_conn_id;
1998 io_log->lun = sc_cmd->device->lun;
1999 io_log->op = sc_cmd->cmnd[0];
2000 io_log->lba[0] = sc_cmd->cmnd[2];
2001 io_log->lba[1] = sc_cmd->cmnd[3];
2002 io_log->lba[2] = sc_cmd->cmnd[4];
2003 io_log->lba[3] = sc_cmd->cmnd[5];
2004 io_log->bufflen = scsi_bufflen(sc_cmd);
2005 io_log->sg_count = scsi_sg_count(sc_cmd);
2006 io_log->fast_sgs = qedi->fast_sgls;
2007 io_log->cached_sgs = qedi->cached_sgls;
2008 io_log->slow_sgs = qedi->slow_sgls;
2009 io_log->cached_sge = qedi->use_cached_sge;
2010 io_log->slow_sge = qedi->use_slow_sge;
2011 io_log->fast_sge = qedi->use_fast_sge;
2012 io_log->result = sc_cmd->result;
2013 io_log->jiffies = jiffies;
2014 io_log->blk_req_cpu = smp_processor_id();
2016 if (direction == QEDI_IO_TRACE_REQ) {
2017 /* For requests we only care about the submission CPU */
2018 io_log->req_cpu = smp_processor_id() % qedi->num_queues;
2019 io_log->intr_cpu = 0;
2020 io_log->blk_rsp_cpu = 0;
2021 } else if (direction == QEDI_IO_TRACE_RSP) {
2022 io_log->req_cpu = smp_processor_id() % qedi->num_queues;
2023 io_log->intr_cpu = qedi->intr_cpu;
2024 io_log->blk_rsp_cpu = smp_processor_id();
2027 qedi->io_trace_idx++;
2028 if (qedi->io_trace_idx == QEDI_IO_TRACE_SIZE)
2029 qedi->io_trace_idx = 0;
2031 qedi->use_cached_sge = false;
2032 qedi->use_slow_sge = false;
2033 qedi->use_fast_sge = false;
2035 spin_unlock_irqrestore(&qedi->io_trace_lock, flags);
2038 int qedi_iscsi_send_ioreq(struct iscsi_task *task)
2040 struct iscsi_conn *conn = task->conn;
2041 struct iscsi_session *session = conn->session;
2042 struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session);
2043 struct qedi_ctx *qedi = iscsi_host_priv(shost);
2044 struct qedi_conn *qedi_conn = conn->dd_data;
2045 struct qedi_cmd *cmd = task->dd_data;
2046 struct scsi_cmnd *sc = task->sc;
2047 struct iscsi_cmd_hdr cmd_pdu_header;
2048 struct scsi_sgl_task_params tx_sgl_task_params;
2049 struct scsi_sgl_task_params rx_sgl_task_params;
2050 struct scsi_sgl_task_params *prx_sgl = NULL;
2051 struct scsi_sgl_task_params *ptx_sgl = NULL;
2052 struct iscsi_task_params task_params;
2053 struct iscsi_conn_params conn_params;
2054 struct scsi_initiator_cmd_params cmd_params;
2055 struct e4_iscsi_task_context *fw_task_ctx;
2056 struct iscsi_cls_conn *cls_conn;
2057 struct iscsi_scsi_req *hdr = (struct iscsi_scsi_req *)task->hdr;
2058 enum iscsi_task_type task_type = MAX_ISCSI_TASK_TYPE;
2059 struct qedi_endpoint *ep;
2067 cls_conn = qedi_conn->cls_conn;
2068 conn = cls_conn->dd_data;
2070 qedi_iscsi_map_sg_list(cmd);
2071 int_to_scsilun(sc->device->lun, (struct scsi_lun *)scsi_lun);
2073 tid = qedi_get_task_idx(qedi);
2078 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
2080 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
2084 memset(&task_params, 0, sizeof(task_params));
2085 memset(&cmd_pdu_header, 0, sizeof(cmd_pdu_header));
2086 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
2087 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
2088 memset(&conn_params, 0, sizeof(conn_params));
2089 memset(&cmd_params, 0, sizeof(cmd_params));
2091 cq_idx = smp_processor_id() % qedi->num_queues;
2092 /* Update header info */
2093 SET_FIELD(cmd_pdu_header.flags_attr, ISCSI_CMD_HDR_ATTR,
2095 if (hdr->cdb[0] != TEST_UNIT_READY) {
2096 if (sc->sc_data_direction == DMA_TO_DEVICE) {
2097 SET_FIELD(cmd_pdu_header.flags_attr,
2098 ISCSI_CMD_HDR_WRITE, 1);
2099 task_type = ISCSI_TASK_TYPE_INITIATOR_WRITE;
2101 SET_FIELD(cmd_pdu_header.flags_attr,
2102 ISCSI_CMD_HDR_READ, 1);
2103 task_type = ISCSI_TASK_TYPE_INITIATOR_READ;
2107 cmd_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]);
2108 cmd_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]);
2110 qedi_update_itt_map(qedi, tid, task->itt, cmd);
2111 cmd_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
2112 cmd_pdu_header.expected_transfer_length = cpu_to_be32(hdr->data_length);
2113 cmd_pdu_header.hdr_second_dword = ntoh24(hdr->dlength);
2114 cmd_pdu_header.cmd_sn = be32_to_cpu(hdr->cmdsn);
2115 cmd_pdu_header.hdr_first_byte = hdr->opcode;
2116 qedi_cpy_scsi_cdb(sc, (u32 *)cmd_pdu_header.cdb);
2118 /* Fill tx AHS and rx buffer */
2119 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) {
2120 tx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl;
2121 tx_sgl_task_params.sgl_phys_addr.lo =
2122 (u32)(cmd->io_tbl.sge_tbl_dma);
2123 tx_sgl_task_params.sgl_phys_addr.hi =
2124 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32);
2125 tx_sgl_task_params.total_buffer_size = scsi_bufflen(sc);
2126 tx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid;
2127 if (cmd->use_slowpath)
2128 tx_sgl_task_params.small_mid_sge = true;
2129 } else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) {
2130 rx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl;
2131 rx_sgl_task_params.sgl_phys_addr.lo =
2132 (u32)(cmd->io_tbl.sge_tbl_dma);
2133 rx_sgl_task_params.sgl_phys_addr.hi =
2134 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32);
2135 rx_sgl_task_params.total_buffer_size = scsi_bufflen(sc);
2136 rx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid;
2139 /* Add conn param */
2140 conn_params.first_burst_length = conn->session->first_burst;
2141 conn_params.max_send_pdu_length = conn->max_xmit_dlength;
2142 conn_params.max_burst_length = conn->session->max_burst;
2143 if (conn->session->initial_r2t_en)
2144 conn_params.initial_r2t = true;
2145 if (conn->session->imm_data_en)
2146 conn_params.immediate_data = true;
2148 /* Add cmd params */
2149 cmd_params.sense_data_buffer_phys_addr.lo = (u32)cmd->sense_buffer_dma;
2150 cmd_params.sense_data_buffer_phys_addr.hi =
2151 (u32)((u64)cmd->sense_buffer_dma >> 32);
2152 /* Fill fw input params */
2153 task_params.context = fw_task_ctx;
2154 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
2155 task_params.itid = tid;
2156 task_params.cq_rss_number = cq_idx;
2157 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE)
2158 task_params.tx_io_size = scsi_bufflen(sc);
2159 else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ)
2160 task_params.rx_io_size = scsi_bufflen(sc);
2162 sq_idx = qedi_get_wqe_idx(qedi_conn);
2163 task_params.sqe = &ep->sq[sq_idx];
2165 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
2166 "%s: %s-SGL: sg_len=0x%x num_sges=0x%x first-sge-lo=0x%x first-sge-hi=0x%x\n",
2167 (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) ?
2168 "Write " : "Read ", (cmd->io_tbl.sge_valid == 1) ?
2169 "Single" : (cmd->use_slowpath ? "SLOW" : "FAST"),
2170 (u16)cmd->io_tbl.sge_valid, scsi_bufflen(sc),
2171 (u32)(cmd->io_tbl.sge_tbl_dma),
2172 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32));
2174 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
2176 if (task_params.tx_io_size != 0)
2177 ptx_sgl = &tx_sgl_task_params;
2178 if (task_params.rx_io_size != 0)
2179 prx_sgl = &rx_sgl_task_params;
2181 rval = init_initiator_rw_iscsi_task(&task_params, &conn_params,
2182 &cmd_params, &cmd_pdu_header,
2188 spin_lock(&qedi_conn->list_lock);
2189 list_add_tail(&cmd->io_cmd, &qedi_conn->active_cmd_list);
2190 cmd->io_cmd_in_list = true;
2191 qedi_conn->active_cmd_count++;
2192 spin_unlock(&qedi_conn->list_lock);
2194 qedi_ring_doorbell(qedi_conn);
2198 int qedi_iscsi_cleanup_task(struct iscsi_task *task, bool mark_cmd_node_deleted)
2200 struct iscsi_task_params task_params;
2201 struct qedi_endpoint *ep;
2202 struct iscsi_conn *conn = task->conn;
2203 struct qedi_conn *qedi_conn = conn->dd_data;
2204 struct qedi_cmd *cmd = task->dd_data;
2208 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
2209 "issue cleanup tid=0x%x itt=0x%x task_state=%d cmd_state=0%x cid=0x%x\n",
2210 cmd->task_id, get_itt(task->itt), task->state,
2211 cmd->state, qedi_conn->iscsi_conn_id);
2213 memset(&task_params, 0, sizeof(task_params));
2216 sq_idx = qedi_get_wqe_idx(qedi_conn);
2218 task_params.sqe = &ep->sq[sq_idx];
2219 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
2220 task_params.itid = cmd->task_id;
2222 rval = init_cleanup_task(&task_params);
2226 qedi_ring_doorbell(qedi_conn);