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->q) {
620 QEDI_WARN(&qedi->dbg_ctx,
621 "request->q is NULL so request is not valid, sc_cmd=%p.\n",
626 qedi_iscsi_unmap_sg_list(cmd);
628 hdr = (struct iscsi_scsi_rsp *)task->hdr;
629 hdr->opcode = cqe_data_in->opcode;
630 hdr->max_cmdsn = cpu_to_be32(cqe_data_in->max_cmd_sn);
631 hdr->exp_cmdsn = cpu_to_be32(cqe_data_in->exp_cmd_sn);
632 hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age);
633 hdr->response = cqe_data_in->reserved1;
634 hdr->cmd_status = cqe_data_in->status_rsvd;
635 hdr->flags = cqe_data_in->flags;
636 hdr->residual_count = cpu_to_be32(cqe_data_in->residual_count);
638 if (hdr->cmd_status == SAM_STAT_CHECK_CONDITION) {
639 datalen = cqe_data_in->reserved2 &
640 ISCSI_COMMON_HDR_DATA_SEG_LEN_MASK;
641 memcpy((char *)conn->data, (char *)cmd->sense_buffer, datalen);
644 /* If f/w reports data underrun err then set residual to IO transfer
645 * length, set Underrun flag and clear Overrun flag explicitly
647 if (unlikely(cqe_err_bits &&
648 GET_FIELD(cqe_err_bits, CQE_ERROR_BITMAP_UNDER_RUN_ERR))) {
649 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
650 "Under flow itt=0x%x proto flags=0x%x tid=0x%x cid 0x%x fw resid 0x%x sc dlen 0x%x\n",
651 hdr->itt, cqe_data_in->flags, cmd->task_id,
652 qedi_conn->iscsi_conn_id, hdr->residual_count,
653 scsi_bufflen(sc_cmd));
654 hdr->residual_count = cpu_to_be32(scsi_bufflen(sc_cmd));
655 hdr->flags |= ISCSI_FLAG_CMD_UNDERFLOW;
656 hdr->flags &= (~ISCSI_FLAG_CMD_OVERFLOW);
659 spin_lock(&qedi_conn->list_lock);
660 if (likely(cmd->io_cmd_in_list)) {
661 cmd->io_cmd_in_list = false;
662 list_del_init(&cmd->io_cmd);
663 qedi_conn->active_cmd_count--;
665 spin_unlock(&qedi_conn->list_lock);
667 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
668 "Freeing tid=0x%x for cid=0x%x\n",
669 cmd->task_id, qedi_conn->iscsi_conn_id);
670 cmd->state = RESPONSE_RECEIVED;
672 qedi_trace_io(qedi, task, cmd->task_id, QEDI_IO_TRACE_RSP);
674 qedi_clear_task_idx(qedi, cmd->task_id);
675 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr,
676 conn->data, datalen);
678 spin_unlock_bh(&session->back_lock);
681 static void qedi_mtask_completion(struct qedi_ctx *qedi,
682 union iscsi_cqe *cqe,
683 struct iscsi_task *task,
684 struct qedi_conn *conn, uint16_t que_idx)
686 struct iscsi_conn *iscsi_conn;
689 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte;
690 iscsi_conn = conn->cls_conn->dd_data;
692 switch (hdr_opcode) {
693 case ISCSI_OPCODE_SCSI_RESPONSE:
694 case ISCSI_OPCODE_DATA_IN:
695 qedi_scsi_completion(qedi, cqe, task, iscsi_conn);
697 case ISCSI_OPCODE_LOGIN_RESPONSE:
698 qedi_process_login_resp(qedi, cqe, task, conn);
700 case ISCSI_OPCODE_TMF_RESPONSE:
701 qedi_process_tmf_resp(qedi, cqe, task, conn);
703 case ISCSI_OPCODE_TEXT_RESPONSE:
704 qedi_process_text_resp(qedi, cqe, task, conn);
706 case ISCSI_OPCODE_LOGOUT_RESPONSE:
707 qedi_process_logout_resp(qedi, cqe, task, conn);
709 case ISCSI_OPCODE_NOP_IN:
710 qedi_process_nopin_mesg(qedi, cqe, task, conn, que_idx);
713 QEDI_ERR(&qedi->dbg_ctx, "unknown opcode\n");
717 static void qedi_process_nopin_local_cmpl(struct qedi_ctx *qedi,
718 struct iscsi_cqe_solicited *cqe,
719 struct iscsi_task *task,
720 struct qedi_conn *qedi_conn)
722 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
723 struct iscsi_session *session = conn->session;
724 struct qedi_cmd *cmd = task->dd_data;
726 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UNSOL,
727 "itid=0x%x, cmd task id=0x%x\n",
728 cqe->itid, cmd->task_id);
730 cmd->state = RESPONSE_RECEIVED;
731 qedi_clear_task_idx(qedi, cmd->task_id);
733 spin_lock_bh(&session->back_lock);
734 __iscsi_put_task(task);
735 spin_unlock_bh(&session->back_lock);
738 static void qedi_process_cmd_cleanup_resp(struct qedi_ctx *qedi,
739 struct iscsi_cqe_solicited *cqe,
740 struct iscsi_task *task,
741 struct iscsi_conn *conn)
743 struct qedi_work_map *work, *work_tmp;
744 u32 proto_itt = cqe->itid;
748 struct qedi_cmd *qedi_cmd = NULL;
751 struct qedi_conn *qedi_conn;
752 struct qedi_cmd *dbg_cmd;
753 struct iscsi_task *mtask;
754 struct iscsi_tm *tmf_hdr = NULL;
756 iscsi_cid = cqe->conn_id;
757 qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
759 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
760 "icid not found 0x%x\n", cqe->conn_id);
764 /* Based on this itt get the corresponding qedi_cmd */
765 spin_lock_bh(&qedi_conn->tmf_work_lock);
766 list_for_each_entry_safe(work, work_tmp, &qedi_conn->tmf_work_list,
768 if (work->rtid == proto_itt) {
769 /* We found the command */
770 qedi_cmd = work->qedi_cmd;
771 if (!qedi_cmd->list_tmf_work) {
772 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
773 "TMF work not found, cqe->tid=0x%x, cid=0x%x\n",
774 proto_itt, qedi_conn->iscsi_conn_id);
778 mtask = qedi_cmd->task;
779 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
782 list_del_init(&work->list);
784 qedi_cmd->list_tmf_work = NULL;
787 spin_unlock_bh(&qedi_conn->tmf_work_lock);
790 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
791 "TMF work, cqe->tid=0x%x, tmf flags=0x%x, cid=0x%x\n",
792 proto_itt, tmf_hdr->flags, qedi_conn->iscsi_conn_id);
794 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
795 ISCSI_TM_FUNC_ABORT_TASK) {
796 spin_lock_bh(&conn->session->back_lock);
798 protoitt = build_itt(get_itt(tmf_hdr->rtt),
800 task = iscsi_itt_to_task(conn, protoitt);
802 spin_unlock_bh(&conn->session->back_lock);
805 QEDI_NOTICE(&qedi->dbg_ctx,
806 "IO task completed, tmf rtt=0x%x, cid=0x%x\n",
807 get_itt(tmf_hdr->rtt),
808 qedi_conn->iscsi_conn_id);
812 dbg_cmd = task->dd_data;
814 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
815 "Abort tmf rtt=0x%x, i/o itt=0x%x, i/o tid=0x%x, cid=0x%x\n",
816 get_itt(tmf_hdr->rtt), get_itt(task->itt),
817 dbg_cmd->task_id, qedi_conn->iscsi_conn_id);
819 if (qedi_cmd->state == CLEANUP_WAIT_FAILED)
820 qedi_cmd->state = CLEANUP_RECV;
822 qedi_clear_task_idx(qedi_conn->qedi, rtid);
824 spin_lock(&qedi_conn->list_lock);
825 list_del_init(&dbg_cmd->io_cmd);
826 qedi_conn->active_cmd_count--;
827 spin_unlock(&qedi_conn->list_lock);
828 qedi_cmd->state = CLEANUP_RECV;
829 wake_up_interruptible(&qedi_conn->wait_queue);
831 } else if (qedi_conn->cmd_cleanup_req > 0) {
832 spin_lock_bh(&conn->session->back_lock);
833 qedi_get_proto_itt(qedi, cqe->itid, &ptmp_itt);
834 protoitt = build_itt(ptmp_itt, conn->session->age);
835 task = iscsi_itt_to_task(conn, protoitt);
836 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
837 "cleanup io itid=0x%x, protoitt=0x%x, cmd_cleanup_cmpl=%d, cid=0x%x\n",
838 cqe->itid, protoitt, qedi_conn->cmd_cleanup_cmpl,
839 qedi_conn->iscsi_conn_id);
841 spin_unlock_bh(&conn->session->back_lock);
843 QEDI_NOTICE(&qedi->dbg_ctx,
844 "task is null, itid=0x%x, cid=0x%x\n",
845 cqe->itid, qedi_conn->iscsi_conn_id);
848 qedi_conn->cmd_cleanup_cmpl++;
849 wake_up(&qedi_conn->wait_queue);
851 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,
852 "Freeing tid=0x%x for cid=0x%x\n",
853 cqe->itid, qedi_conn->iscsi_conn_id);
854 qedi_clear_task_idx(qedi_conn->qedi, cqe->itid);
857 qedi_get_proto_itt(qedi, cqe->itid, &ptmp_itt);
858 protoitt = build_itt(ptmp_itt, conn->session->age);
859 task = iscsi_itt_to_task(conn, protoitt);
860 QEDI_ERR(&qedi->dbg_ctx,
861 "Delayed or untracked cleanup response, itt=0x%x, tid=0x%x, cid=0x%x, task=%p\n",
862 protoitt, cqe->itid, qedi_conn->iscsi_conn_id, task);
866 void qedi_fp_process_cqes(struct qedi_work *work)
868 struct qedi_ctx *qedi = work->qedi;
869 union iscsi_cqe *cqe = &work->cqe;
870 struct iscsi_task *task = NULL;
871 struct iscsi_nopout *nopout_hdr;
872 struct qedi_conn *q_conn;
873 struct iscsi_conn *conn;
874 struct qedi_cmd *qedi_cmd;
878 u16 que_idx = work->que_idx;
881 comp_type = cqe->cqe_common.cqe_type;
882 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte;
884 cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits;
886 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
887 "fw_cid=0x%x, cqe type=0x%x, opcode=0x%x\n",
888 cqe->cqe_common.conn_id, comp_type, hdr_opcode);
890 if (comp_type >= MAX_ISCSI_CQES_TYPE) {
891 QEDI_WARN(&qedi->dbg_ctx, "Invalid CqE type\n");
895 iscsi_cid = cqe->cqe_common.conn_id;
896 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
898 QEDI_WARN(&qedi->dbg_ctx,
899 "Session no longer exists for cid=0x%x!!\n",
904 conn = q_conn->cls_conn->dd_data;
906 if (unlikely(cqe_err_bits &&
907 GET_FIELD(cqe_err_bits,
908 CQE_ERROR_BITMAP_DATA_DIGEST_ERR))) {
909 iscsi_conn_failure(conn, ISCSI_ERR_DATA_DGST);
914 case ISCSI_CQE_TYPE_SOLICITED:
915 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
916 qedi_cmd = container_of(work, struct qedi_cmd, cqe_work);
917 task = qedi_cmd->task;
919 QEDI_WARN(&qedi->dbg_ctx, "task is NULL\n");
923 /* Process NOPIN local completion */
924 nopout_hdr = (struct iscsi_nopout *)task->hdr;
925 if ((nopout_hdr->itt == RESERVED_ITT) &&
926 (cqe->cqe_solicited.itid != (u16)RESERVED_ITT)) {
927 qedi_process_nopin_local_cmpl(qedi, &cqe->cqe_solicited,
930 cqe->cqe_solicited.itid =
931 qedi_get_itt(cqe->cqe_solicited);
932 /* Process other solicited responses */
933 qedi_mtask_completion(qedi, cqe, task, q_conn, que_idx);
936 case ISCSI_CQE_TYPE_UNSOLICITED:
937 switch (hdr_opcode) {
938 case ISCSI_OPCODE_NOP_IN:
939 qedi_process_nopin_mesg(qedi, cqe, task, q_conn,
942 case ISCSI_OPCODE_ASYNC_MSG:
943 qedi_process_async_mesg(qedi, cqe, task, q_conn,
946 case ISCSI_OPCODE_REJECT:
947 qedi_process_reject_mesg(qedi, cqe, task, q_conn,
951 goto exit_fp_process;
952 case ISCSI_CQE_TYPE_DUMMY:
953 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "Dummy CqE\n");
954 goto exit_fp_process;
955 case ISCSI_CQE_TYPE_TASK_CLEANUP:
956 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "CleanUp CqE\n");
957 qedi_process_cmd_cleanup_resp(qedi, &cqe->cqe_solicited, task,
959 goto exit_fp_process;
961 QEDI_ERR(&qedi->dbg_ctx, "Error cqe.\n");
969 static void qedi_ring_doorbell(struct qedi_conn *qedi_conn)
971 struct iscsi_db_data dbell = { 0 };
975 dbell.params |= DB_DEST_XCM << ISCSI_DB_DATA_DEST_SHIFT;
976 dbell.params |= DB_AGG_CMD_SET << ISCSI_DB_DATA_AGG_CMD_SHIFT;
978 DQ_XCM_ISCSI_SQ_PROD_CMD << ISCSI_DB_DATA_AGG_VAL_SEL_SHIFT;
980 dbell.sq_prod = qedi_conn->ep->fw_sq_prod_idx;
981 writel(*(u32 *)&dbell, qedi_conn->ep->p_doorbell);
983 /* Make sure fw write idx is coherent, and include both memory barriers
984 * as a failsafe as for some architectures the call is the same but on
985 * others they are two different assembly operations.
988 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_MP_REQ,
989 "prod_idx=0x%x, fw_prod_idx=0x%x, cid=0x%x\n",
990 qedi_conn->ep->sq_prod_idx, qedi_conn->ep->fw_sq_prod_idx,
991 qedi_conn->iscsi_conn_id);
994 static u16 qedi_get_wqe_idx(struct qedi_conn *qedi_conn)
996 struct qedi_endpoint *ep;
1000 rval = ep->sq_prod_idx;
1002 /* Increament SQ index */
1004 ep->fw_sq_prod_idx++;
1005 if (ep->sq_prod_idx == QEDI_SQ_SIZE)
1006 ep->sq_prod_idx = 0;
1011 int qedi_send_iscsi_login(struct qedi_conn *qedi_conn,
1012 struct iscsi_task *task)
1014 struct iscsi_login_req_hdr login_req_pdu_header;
1015 struct scsi_sgl_task_params tx_sgl_task_params;
1016 struct scsi_sgl_task_params rx_sgl_task_params;
1017 struct iscsi_task_params task_params;
1018 struct e4_iscsi_task_context *fw_task_ctx;
1019 struct qedi_ctx *qedi = qedi_conn->qedi;
1020 struct iscsi_login_req *login_hdr;
1021 struct scsi_sge *resp_sge = NULL;
1022 struct qedi_cmd *qedi_cmd;
1023 struct qedi_endpoint *ep;
1028 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1029 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1031 login_hdr = (struct iscsi_login_req *)task->hdr;
1033 tid = qedi_get_task_idx(qedi);
1038 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
1040 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
1042 qedi_cmd->task_id = tid;
1044 memset(&task_params, 0, sizeof(task_params));
1045 memset(&login_req_pdu_header, 0, sizeof(login_req_pdu_header));
1046 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1047 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1048 /* Update header info */
1049 login_req_pdu_header.opcode = login_hdr->opcode;
1050 login_req_pdu_header.version_min = login_hdr->min_version;
1051 login_req_pdu_header.version_max = login_hdr->max_version;
1052 login_req_pdu_header.flags_attr = login_hdr->flags;
1053 login_req_pdu_header.isid_tabc = swab32p((u32 *)login_hdr->isid);
1054 login_req_pdu_header.isid_d = swab16p((u16 *)&login_hdr->isid[4]);
1056 login_req_pdu_header.tsih = login_hdr->tsih;
1057 login_req_pdu_header.hdr_second_dword = ntoh24(login_hdr->dlength);
1059 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1060 login_req_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1061 login_req_pdu_header.cid = qedi_conn->iscsi_conn_id;
1062 login_req_pdu_header.cmd_sn = be32_to_cpu(login_hdr->cmdsn);
1063 login_req_pdu_header.exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn);
1064 login_req_pdu_header.exp_stat_sn = 0;
1066 /* Fill tx AHS and rx buffer */
1067 tx_sgl_task_params.sgl =
1068 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1069 tx_sgl_task_params.sgl_phys_addr.lo =
1070 (u32)(qedi_conn->gen_pdu.req_dma_addr);
1071 tx_sgl_task_params.sgl_phys_addr.hi =
1072 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
1073 tx_sgl_task_params.total_buffer_size = ntoh24(login_hdr->dlength);
1074 tx_sgl_task_params.num_sges = 1;
1076 rx_sgl_task_params.sgl =
1077 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1078 rx_sgl_task_params.sgl_phys_addr.lo =
1079 (u32)(qedi_conn->gen_pdu.resp_dma_addr);
1080 rx_sgl_task_params.sgl_phys_addr.hi =
1081 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
1082 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len;
1083 rx_sgl_task_params.num_sges = 1;
1085 /* Fill fw input params */
1086 task_params.context = fw_task_ctx;
1087 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1088 task_params.itid = tid;
1089 task_params.cq_rss_number = 0;
1090 task_params.tx_io_size = ntoh24(login_hdr->dlength);
1091 task_params.rx_io_size = resp_sge->sge_len;
1093 sq_idx = qedi_get_wqe_idx(qedi_conn);
1094 task_params.sqe = &ep->sq[sq_idx];
1096 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1097 rval = init_initiator_login_request_task(&task_params,
1098 &login_req_pdu_header,
1099 &tx_sgl_task_params,
1100 &rx_sgl_task_params);
1104 spin_lock(&qedi_conn->list_lock);
1105 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1106 qedi_cmd->io_cmd_in_list = true;
1107 qedi_conn->active_cmd_count++;
1108 spin_unlock(&qedi_conn->list_lock);
1110 qedi_ring_doorbell(qedi_conn);
1114 int qedi_send_iscsi_logout(struct qedi_conn *qedi_conn,
1115 struct iscsi_task *task)
1117 struct iscsi_logout_req_hdr logout_pdu_header;
1118 struct scsi_sgl_task_params tx_sgl_task_params;
1119 struct scsi_sgl_task_params rx_sgl_task_params;
1120 struct iscsi_task_params task_params;
1121 struct e4_iscsi_task_context *fw_task_ctx;
1122 struct iscsi_logout *logout_hdr = NULL;
1123 struct qedi_ctx *qedi = qedi_conn->qedi;
1124 struct qedi_cmd *qedi_cmd;
1125 struct qedi_endpoint *ep;
1130 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1131 logout_hdr = (struct iscsi_logout *)task->hdr;
1134 tid = qedi_get_task_idx(qedi);
1139 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
1141 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
1143 qedi_cmd->task_id = tid;
1145 memset(&task_params, 0, sizeof(task_params));
1146 memset(&logout_pdu_header, 0, sizeof(logout_pdu_header));
1147 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1148 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1150 /* Update header info */
1151 logout_pdu_header.opcode = logout_hdr->opcode;
1152 logout_pdu_header.reason_code = 0x80 | logout_hdr->flags;
1153 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1154 logout_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1155 logout_pdu_header.exp_stat_sn = be32_to_cpu(logout_hdr->exp_statsn);
1156 logout_pdu_header.cmd_sn = be32_to_cpu(logout_hdr->cmdsn);
1157 logout_pdu_header.cid = qedi_conn->iscsi_conn_id;
1159 /* Fill fw input params */
1160 task_params.context = fw_task_ctx;
1161 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1162 task_params.itid = tid;
1163 task_params.cq_rss_number = 0;
1164 task_params.tx_io_size = 0;
1165 task_params.rx_io_size = 0;
1167 sq_idx = qedi_get_wqe_idx(qedi_conn);
1168 task_params.sqe = &ep->sq[sq_idx];
1169 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1171 rval = init_initiator_logout_request_task(&task_params,
1177 spin_lock(&qedi_conn->list_lock);
1178 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1179 qedi_cmd->io_cmd_in_list = true;
1180 qedi_conn->active_cmd_count++;
1181 spin_unlock(&qedi_conn->list_lock);
1183 qedi_ring_doorbell(qedi_conn);
1187 int qedi_cleanup_all_io(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn,
1188 struct iscsi_task *task, bool in_recovery)
1191 struct iscsi_task *ctask;
1192 struct qedi_cmd *cmd, *cmd_tmp;
1193 struct iscsi_tm *tmf_hdr;
1194 unsigned int lun = 0;
1195 bool lun_reset = false;
1196 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
1197 struct iscsi_session *session = conn->session;
1199 /* From recovery, task is NULL or from tmf resp valid task */
1201 tmf_hdr = (struct iscsi_tm *)task->hdr;
1203 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1204 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) {
1206 lun = scsilun_to_int(&tmf_hdr->lun);
1210 qedi_conn->cmd_cleanup_req = 0;
1211 qedi_conn->cmd_cleanup_cmpl = 0;
1213 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1214 "active_cmd_count=%d, cid=0x%x, in_recovery=%d, lun_reset=%d\n",
1215 qedi_conn->active_cmd_count, qedi_conn->iscsi_conn_id,
1216 in_recovery, lun_reset);
1219 spin_lock_bh(&session->back_lock);
1221 spin_lock(&qedi_conn->list_lock);
1223 list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list,
1230 if (cmd->scsi_cmd && cmd->scsi_cmd->device) {
1231 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1232 "tid=0x%x itt=0x%x scsi_cmd_ptr=%p device=%p task_state=%d cmd_state=0%x cid=0x%x\n",
1233 cmd->task_id, get_itt(ctask->itt),
1234 cmd->scsi_cmd, cmd->scsi_cmd->device,
1235 ctask->state, cmd->state,
1236 qedi_conn->iscsi_conn_id);
1237 if (cmd->scsi_cmd->device->lun != lun)
1241 qedi_conn->cmd_cleanup_req++;
1242 qedi_iscsi_cleanup_task(ctask, true);
1244 list_del_init(&cmd->io_cmd);
1245 qedi_conn->active_cmd_count--;
1246 QEDI_WARN(&qedi->dbg_ctx,
1247 "Deleted active cmd list node io_cmd=%p, cid=0x%x\n",
1248 &cmd->io_cmd, qedi_conn->iscsi_conn_id);
1251 spin_unlock(&qedi_conn->list_lock);
1254 spin_unlock_bh(&session->back_lock);
1256 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1257 "cmd_cleanup_req=%d, cid=0x%x\n",
1258 qedi_conn->cmd_cleanup_req,
1259 qedi_conn->iscsi_conn_id);
1261 rval = wait_event_interruptible_timeout(qedi_conn->wait_queue,
1262 ((qedi_conn->cmd_cleanup_req ==
1263 qedi_conn->cmd_cleanup_cmpl) ||
1267 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1268 "i/o cmd_cleanup_req=%d, equal to cmd_cleanup_cmpl=%d, cid=0x%x\n",
1269 qedi_conn->cmd_cleanup_req,
1270 qedi_conn->cmd_cleanup_cmpl,
1271 qedi_conn->iscsi_conn_id);
1276 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1277 "i/o cmd_cleanup_req=%d, not equal to cmd_cleanup_cmpl=%d, cid=0x%x\n",
1278 qedi_conn->cmd_cleanup_req,
1279 qedi_conn->cmd_cleanup_cmpl,
1280 qedi_conn->iscsi_conn_id);
1282 iscsi_host_for_each_session(qedi->shost,
1283 qedi_mark_device_missing);
1284 qedi_ops->common->drain(qedi->cdev);
1286 /* Enable IOs for all other sessions except current.*/
1287 if (!wait_event_interruptible_timeout(qedi_conn->wait_queue,
1288 (qedi_conn->cmd_cleanup_req ==
1289 qedi_conn->cmd_cleanup_cmpl),
1291 iscsi_host_for_each_session(qedi->shost,
1292 qedi_mark_device_available);
1296 iscsi_host_for_each_session(qedi->shost,
1297 qedi_mark_device_available);
1302 void qedi_clearsq(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn,
1303 struct iscsi_task *task)
1305 struct qedi_endpoint *qedi_ep;
1308 qedi_ep = qedi_conn->ep;
1309 qedi_conn->cmd_cleanup_req = 0;
1310 qedi_conn->cmd_cleanup_cmpl = 0;
1313 QEDI_WARN(&qedi->dbg_ctx,
1314 "Cannot proceed, ep already disconnected, cid=0x%x\n",
1315 qedi_conn->iscsi_conn_id);
1319 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1320 "Clearing SQ for cid=0x%x, conn=%p, ep=%p\n",
1321 qedi_conn->iscsi_conn_id, qedi_conn, qedi_ep);
1323 qedi_ops->clear_sq(qedi->cdev, qedi_ep->handle);
1325 rval = qedi_cleanup_all_io(qedi, qedi_conn, task, true);
1327 QEDI_ERR(&qedi->dbg_ctx,
1328 "fatal error, need hard reset, cid=0x%x\n",
1329 qedi_conn->iscsi_conn_id);
1334 static int qedi_wait_for_cleanup_request(struct qedi_ctx *qedi,
1335 struct qedi_conn *qedi_conn,
1336 struct iscsi_task *task,
1337 struct qedi_cmd *qedi_cmd,
1338 struct qedi_work_map *list_work)
1340 struct qedi_cmd *cmd = (struct qedi_cmd *)task->dd_data;
1343 wait = wait_event_interruptible_timeout(qedi_conn->wait_queue,
1344 ((qedi_cmd->state ==
1346 ((qedi_cmd->type == TYPEIO) &&
1348 RESPONSE_RECEIVED))),
1351 qedi_cmd->state = CLEANUP_WAIT_FAILED;
1353 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1354 "Cleanup timedout tid=0x%x, issue connection recovery, cid=0x%x\n",
1355 cmd->task_id, qedi_conn->iscsi_conn_id);
1362 static void qedi_tmf_work(struct work_struct *work)
1364 struct qedi_cmd *qedi_cmd =
1365 container_of(work, struct qedi_cmd, tmf_work);
1366 struct qedi_conn *qedi_conn = qedi_cmd->conn;
1367 struct qedi_ctx *qedi = qedi_conn->qedi;
1368 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
1369 struct iscsi_cls_session *cls_sess;
1370 struct qedi_work_map *list_work = NULL;
1371 struct iscsi_task *mtask;
1372 struct qedi_cmd *cmd;
1373 struct iscsi_task *ctask;
1374 struct iscsi_tm *tmf_hdr;
1378 mtask = qedi_cmd->task;
1379 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
1380 cls_sess = iscsi_conn_to_session(qedi_conn->cls_conn);
1381 set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
1383 ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt);
1384 if (!ctask || !ctask->sc) {
1385 QEDI_ERR(&qedi->dbg_ctx, "Task already completed\n");
1389 cmd = (struct qedi_cmd *)ctask->dd_data;
1390 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1391 "Abort tmf rtt=0x%x, cmd itt=0x%x, cmd tid=0x%x, cid=0x%x\n",
1392 get_itt(tmf_hdr->rtt), get_itt(ctask->itt), cmd->task_id,
1393 qedi_conn->iscsi_conn_id);
1395 if (qedi_do_not_recover) {
1396 QEDI_ERR(&qedi->dbg_ctx, "DONT SEND CLEANUP/ABORT %d\n",
1397 qedi_do_not_recover);
1401 list_work = kzalloc(sizeof(*list_work), GFP_ATOMIC);
1403 QEDI_ERR(&qedi->dbg_ctx, "Memory allocation failed\n");
1407 qedi_cmd->type = TYPEIO;
1408 list_work->qedi_cmd = qedi_cmd;
1409 list_work->rtid = cmd->task_id;
1410 list_work->state = QEDI_WORK_SCHEDULED;
1411 qedi_cmd->list_tmf_work = list_work;
1413 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
1414 "Queue tmf work=%p, list node=%p, cid=0x%x, tmf flags=0x%x\n",
1415 list_work->ptr_tmf_work, list_work, qedi_conn->iscsi_conn_id,
1418 spin_lock_bh(&qedi_conn->tmf_work_lock);
1419 list_add_tail(&list_work->list, &qedi_conn->tmf_work_list);
1420 spin_unlock_bh(&qedi_conn->tmf_work_lock);
1422 qedi_iscsi_cleanup_task(ctask, false);
1424 rval = qedi_wait_for_cleanup_request(qedi, qedi_conn, ctask, qedi_cmd,
1427 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1428 "FW cleanup got escalated, cid=0x%x\n",
1429 qedi_conn->iscsi_conn_id);
1433 tid = qedi_get_task_idx(qedi);
1435 QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n",
1436 qedi_conn->iscsi_conn_id);
1440 qedi_cmd->task_id = tid;
1441 qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task);
1444 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
1448 spin_lock_bh(&qedi_conn->tmf_work_lock);
1449 if (!qedi_cmd->list_tmf_work) {
1450 list_del_init(&list_work->list);
1451 qedi_cmd->list_tmf_work = NULL;
1454 spin_unlock_bh(&qedi_conn->tmf_work_lock);
1456 spin_lock(&qedi_conn->list_lock);
1457 list_del_init(&cmd->io_cmd);
1458 qedi_conn->active_cmd_count--;
1459 spin_unlock(&qedi_conn->list_lock);
1461 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
1464 static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn,
1465 struct iscsi_task *mtask)
1467 struct iscsi_tmf_request_hdr tmf_pdu_header;
1468 struct iscsi_task_params task_params;
1469 struct qedi_ctx *qedi = qedi_conn->qedi;
1470 struct e4_iscsi_task_context *fw_task_ctx;
1471 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;
1472 struct iscsi_task *ctask;
1473 struct iscsi_tm *tmf_hdr;
1474 struct qedi_cmd *qedi_cmd;
1475 struct qedi_cmd *cmd;
1476 struct qedi_endpoint *ep;
1482 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
1483 qedi_cmd = (struct qedi_cmd *)mtask->dd_data;
1488 tid = qedi_get_task_idx(qedi);
1493 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
1495 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
1497 qedi_cmd->task_id = tid;
1499 memset(&task_params, 0, sizeof(task_params));
1500 memset(&tmf_pdu_header, 0, sizeof(tmf_pdu_header));
1502 /* Update header info */
1503 qedi_update_itt_map(qedi, tid, mtask->itt, qedi_cmd);
1504 tmf_pdu_header.itt = qedi_set_itt(tid, get_itt(mtask->itt));
1505 tmf_pdu_header.cmd_sn = be32_to_cpu(tmf_hdr->cmdsn);
1507 memcpy(scsi_lun, &tmf_hdr->lun, sizeof(struct scsi_lun));
1508 tmf_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]);
1509 tmf_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]);
1511 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1512 ISCSI_TM_FUNC_ABORT_TASK) {
1513 ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt);
1514 if (!ctask || !ctask->sc) {
1515 QEDI_ERR(&qedi->dbg_ctx,
1516 "Could not get reference task\n");
1519 cmd = (struct qedi_cmd *)ctask->dd_data;
1520 tmf_pdu_header.rtt =
1521 qedi_set_itt(cmd->task_id,
1522 get_itt(tmf_hdr->rtt));
1524 tmf_pdu_header.rtt = ISCSI_RESERVED_TAG;
1527 tmf_pdu_header.opcode = tmf_hdr->opcode;
1528 tmf_pdu_header.function = tmf_hdr->flags;
1529 tmf_pdu_header.hdr_second_dword = ntoh24(tmf_hdr->dlength);
1530 tmf_pdu_header.ref_cmd_sn = be32_to_cpu(tmf_hdr->refcmdsn);
1532 /* Fill fw input params */
1533 task_params.context = fw_task_ctx;
1534 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1535 task_params.itid = tid;
1536 task_params.cq_rss_number = 0;
1537 task_params.tx_io_size = 0;
1538 task_params.rx_io_size = 0;
1540 sq_idx = qedi_get_wqe_idx(qedi_conn);
1541 task_params.sqe = &ep->sq[sq_idx];
1543 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1544 rval = init_initiator_tmf_request_task(&task_params,
1549 spin_lock(&qedi_conn->list_lock);
1550 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1551 qedi_cmd->io_cmd_in_list = true;
1552 qedi_conn->active_cmd_count++;
1553 spin_unlock(&qedi_conn->list_lock);
1555 qedi_ring_doorbell(qedi_conn);
1559 int qedi_iscsi_abort_work(struct qedi_conn *qedi_conn,
1560 struct iscsi_task *mtask)
1562 struct qedi_ctx *qedi = qedi_conn->qedi;
1563 struct iscsi_tm *tmf_hdr;
1564 struct qedi_cmd *qedi_cmd = (struct qedi_cmd *)mtask->dd_data;
1567 tmf_hdr = (struct iscsi_tm *)mtask->hdr;
1568 qedi_cmd->task = mtask;
1570 /* If abort task then schedule the work and return */
1571 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1572 ISCSI_TM_FUNC_ABORT_TASK) {
1573 qedi_cmd->state = CLEANUP_WAIT;
1574 INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_work);
1575 queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work);
1577 } else if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1578 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) ||
1579 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1580 ISCSI_TM_FUNC_TARGET_WARM_RESET) ||
1581 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
1582 ISCSI_TM_FUNC_TARGET_COLD_RESET)) {
1583 tid = qedi_get_task_idx(qedi);
1585 QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n",
1586 qedi_conn->iscsi_conn_id);
1589 qedi_cmd->task_id = tid;
1591 qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task);
1594 QEDI_ERR(&qedi->dbg_ctx, "Invalid tmf, cid=0x%x\n",
1595 qedi_conn->iscsi_conn_id);
1602 int qedi_send_iscsi_text(struct qedi_conn *qedi_conn,
1603 struct iscsi_task *task)
1605 struct iscsi_text_request_hdr text_request_pdu_header;
1606 struct scsi_sgl_task_params tx_sgl_task_params;
1607 struct scsi_sgl_task_params rx_sgl_task_params;
1608 struct iscsi_task_params task_params;
1609 struct e4_iscsi_task_context *fw_task_ctx;
1610 struct qedi_ctx *qedi = qedi_conn->qedi;
1611 struct iscsi_text *text_hdr;
1612 struct scsi_sge *req_sge = NULL;
1613 struct scsi_sge *resp_sge = NULL;
1614 struct qedi_cmd *qedi_cmd;
1615 struct qedi_endpoint *ep;
1620 req_sge = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1621 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1622 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1623 text_hdr = (struct iscsi_text *)task->hdr;
1626 tid = qedi_get_task_idx(qedi);
1631 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
1633 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
1635 qedi_cmd->task_id = tid;
1637 memset(&task_params, 0, sizeof(task_params));
1638 memset(&text_request_pdu_header, 0, sizeof(text_request_pdu_header));
1639 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1640 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1642 /* Update header info */
1643 text_request_pdu_header.opcode = text_hdr->opcode;
1644 text_request_pdu_header.flags_attr = text_hdr->flags;
1646 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1647 text_request_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1648 text_request_pdu_header.ttt = text_hdr->ttt;
1649 text_request_pdu_header.cmd_sn = be32_to_cpu(text_hdr->cmdsn);
1650 text_request_pdu_header.exp_stat_sn = be32_to_cpu(text_hdr->exp_statsn);
1651 text_request_pdu_header.hdr_second_dword = ntoh24(text_hdr->dlength);
1653 /* Fill tx AHS and rx buffer */
1654 tx_sgl_task_params.sgl =
1655 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1656 tx_sgl_task_params.sgl_phys_addr.lo =
1657 (u32)(qedi_conn->gen_pdu.req_dma_addr);
1658 tx_sgl_task_params.sgl_phys_addr.hi =
1659 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
1660 tx_sgl_task_params.total_buffer_size = req_sge->sge_len;
1661 tx_sgl_task_params.num_sges = 1;
1663 rx_sgl_task_params.sgl =
1664 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1665 rx_sgl_task_params.sgl_phys_addr.lo =
1666 (u32)(qedi_conn->gen_pdu.resp_dma_addr);
1667 rx_sgl_task_params.sgl_phys_addr.hi =
1668 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
1669 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len;
1670 rx_sgl_task_params.num_sges = 1;
1672 /* Fill fw input params */
1673 task_params.context = fw_task_ctx;
1674 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1675 task_params.itid = tid;
1676 task_params.cq_rss_number = 0;
1677 task_params.tx_io_size = ntoh24(text_hdr->dlength);
1678 task_params.rx_io_size = resp_sge->sge_len;
1680 sq_idx = qedi_get_wqe_idx(qedi_conn);
1681 task_params.sqe = &ep->sq[sq_idx];
1683 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1684 rval = init_initiator_text_request_task(&task_params,
1685 &text_request_pdu_header,
1686 &tx_sgl_task_params,
1687 &rx_sgl_task_params);
1691 spin_lock(&qedi_conn->list_lock);
1692 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1693 qedi_cmd->io_cmd_in_list = true;
1694 qedi_conn->active_cmd_count++;
1695 spin_unlock(&qedi_conn->list_lock);
1697 qedi_ring_doorbell(qedi_conn);
1701 int qedi_send_iscsi_nopout(struct qedi_conn *qedi_conn,
1702 struct iscsi_task *task,
1703 char *datap, int data_len, int unsol)
1705 struct iscsi_nop_out_hdr nop_out_pdu_header;
1706 struct scsi_sgl_task_params tx_sgl_task_params;
1707 struct scsi_sgl_task_params rx_sgl_task_params;
1708 struct iscsi_task_params task_params;
1709 struct qedi_ctx *qedi = qedi_conn->qedi;
1710 struct e4_iscsi_task_context *fw_task_ctx;
1711 struct iscsi_nopout *nopout_hdr;
1712 struct scsi_sge *resp_sge = NULL;
1713 struct qedi_cmd *qedi_cmd;
1714 struct qedi_endpoint *ep;
1720 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1721 qedi_cmd = (struct qedi_cmd *)task->dd_data;
1722 nopout_hdr = (struct iscsi_nopout *)task->hdr;
1725 tid = qedi_get_task_idx(qedi);
1730 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
1732 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
1734 qedi_cmd->task_id = tid;
1736 memset(&task_params, 0, sizeof(task_params));
1737 memset(&nop_out_pdu_header, 0, sizeof(nop_out_pdu_header));
1738 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
1739 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
1741 /* Update header info */
1742 nop_out_pdu_header.opcode = nopout_hdr->opcode;
1743 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_CONST1, 1);
1744 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_RSRV, 0);
1746 memcpy(scsi_lun, &nopout_hdr->lun, sizeof(struct scsi_lun));
1747 nop_out_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]);
1748 nop_out_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]);
1749 nop_out_pdu_header.cmd_sn = be32_to_cpu(nopout_hdr->cmdsn);
1750 nop_out_pdu_header.exp_stat_sn = be32_to_cpu(nopout_hdr->exp_statsn);
1752 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);
1754 if (nopout_hdr->ttt != ISCSI_TTT_ALL_ONES) {
1755 nop_out_pdu_header.itt = be32_to_cpu(nopout_hdr->itt);
1756 nop_out_pdu_header.ttt = be32_to_cpu(nopout_hdr->ttt);
1758 nop_out_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
1759 nop_out_pdu_header.ttt = ISCSI_TTT_ALL_ONES;
1761 spin_lock(&qedi_conn->list_lock);
1762 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
1763 qedi_cmd->io_cmd_in_list = true;
1764 qedi_conn->active_cmd_count++;
1765 spin_unlock(&qedi_conn->list_lock);
1768 /* Fill tx AHS and rx buffer */
1770 tx_sgl_task_params.sgl =
1771 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
1772 tx_sgl_task_params.sgl_phys_addr.lo =
1773 (u32)(qedi_conn->gen_pdu.req_dma_addr);
1774 tx_sgl_task_params.sgl_phys_addr.hi =
1775 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
1776 tx_sgl_task_params.total_buffer_size = data_len;
1777 tx_sgl_task_params.num_sges = 1;
1779 rx_sgl_task_params.sgl =
1780 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
1781 rx_sgl_task_params.sgl_phys_addr.lo =
1782 (u32)(qedi_conn->gen_pdu.resp_dma_addr);
1783 rx_sgl_task_params.sgl_phys_addr.hi =
1784 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
1785 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len;
1786 rx_sgl_task_params.num_sges = 1;
1789 /* Fill fw input params */
1790 task_params.context = fw_task_ctx;
1791 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
1792 task_params.itid = tid;
1793 task_params.cq_rss_number = 0;
1794 task_params.tx_io_size = data_len;
1795 task_params.rx_io_size = resp_sge->sge_len;
1797 sq_idx = qedi_get_wqe_idx(qedi_conn);
1798 task_params.sqe = &ep->sq[sq_idx];
1800 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
1801 rval = init_initiator_nop_out_task(&task_params,
1802 &nop_out_pdu_header,
1803 &tx_sgl_task_params,
1804 &rx_sgl_task_params);
1808 qedi_ring_doorbell(qedi_conn);
1812 static int qedi_split_bd(struct qedi_cmd *cmd, u64 addr, int sg_len,
1815 struct scsi_sge *bd = cmd->io_tbl.sge_tbl;
1816 int frag_size, sg_frags;
1821 if (addr % QEDI_PAGE_SIZE)
1823 (QEDI_PAGE_SIZE - (addr % QEDI_PAGE_SIZE));
1825 frag_size = (sg_len > QEDI_BD_SPLIT_SZ) ? 0 :
1826 (sg_len % QEDI_BD_SPLIT_SZ);
1829 frag_size = QEDI_BD_SPLIT_SZ;
1831 bd[bd_index + sg_frags].sge_addr.lo = (addr & 0xffffffff);
1832 bd[bd_index + sg_frags].sge_addr.hi = (addr >> 32);
1833 bd[bd_index + sg_frags].sge_len = (u16)frag_size;
1834 QEDI_INFO(&cmd->conn->qedi->dbg_ctx, QEDI_LOG_IO,
1835 "split sge %d: addr=%llx, len=%x",
1836 (bd_index + sg_frags), addr, frag_size);
1838 addr += (u64)frag_size;
1840 sg_len -= frag_size;
1845 static int qedi_map_scsi_sg(struct qedi_ctx *qedi, struct qedi_cmd *cmd)
1847 struct scsi_cmnd *sc = cmd->scsi_cmd;
1848 struct scsi_sge *bd = cmd->io_tbl.sge_tbl;
1849 struct scatterlist *sg;
1858 WARN_ON(scsi_sg_count(sc) > QEDI_ISCSI_MAX_BDS_PER_CMD);
1860 sg_count = dma_map_sg(&qedi->pdev->dev, scsi_sglist(sc),
1861 scsi_sg_count(sc), sc->sc_data_direction);
1864 * New condition to send single SGE as cached-SGL.
1865 * Single SGE with length less than 64K.
1867 sg = scsi_sglist(sc);
1868 if ((sg_count == 1) && (sg_dma_len(sg) <= MAX_SGLEN_FOR_CACHESGL)) {
1869 sg_len = sg_dma_len(sg);
1870 addr = (u64)sg_dma_address(sg);
1872 bd[bd_count].sge_addr.lo = (addr & 0xffffffff);
1873 bd[bd_count].sge_addr.hi = (addr >> 32);
1874 bd[bd_count].sge_len = (u16)sg_len;
1876 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1877 "single-cached-sgl: bd_count:%d addr=%llx, len=%x",
1878 sg_count, addr, sg_len);
1883 scsi_for_each_sg(sc, sg, sg_count, i) {
1884 sg_len = sg_dma_len(sg);
1885 addr = (u64)sg_dma_address(sg);
1886 end_addr = (addr + sg_len);
1889 * first sg elem in the 'list',
1890 * check if end addr is page-aligned.
1892 if ((i == 0) && (sg_count > 1) && (end_addr % QEDI_PAGE_SIZE))
1893 cmd->use_slowpath = true;
1896 * last sg elem in the 'list',
1897 * check if start addr is page-aligned.
1899 else if ((i == (sg_count - 1)) &&
1900 (sg_count > 1) && (addr % QEDI_PAGE_SIZE))
1901 cmd->use_slowpath = true;
1904 * middle sg elements in list,
1905 * check if start and end addr is page-aligned
1907 else if ((i != 0) && (i != (sg_count - 1)) &&
1908 ((addr % QEDI_PAGE_SIZE) ||
1909 (end_addr % QEDI_PAGE_SIZE)))
1910 cmd->use_slowpath = true;
1912 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "sg[%d] size=0x%x",
1915 if (sg_len > QEDI_BD_SPLIT_SZ) {
1916 sg_frags = qedi_split_bd(cmd, addr, sg_len, bd_count);
1919 bd[bd_count].sge_addr.lo = addr & 0xffffffff;
1920 bd[bd_count].sge_addr.hi = addr >> 32;
1921 bd[bd_count].sge_len = sg_len;
1923 byte_count += sg_len;
1924 bd_count += sg_frags;
1927 if (byte_count != scsi_bufflen(sc))
1928 QEDI_ERR(&qedi->dbg_ctx,
1929 "byte_count = %d != scsi_bufflen = %d\n", byte_count,
1932 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "byte_count = %d\n",
1935 WARN_ON(byte_count != scsi_bufflen(sc));
1940 static void qedi_iscsi_map_sg_list(struct qedi_cmd *cmd)
1943 struct scsi_cmnd *sc = cmd->scsi_cmd;
1945 if (scsi_sg_count(sc)) {
1946 bd_count = qedi_map_scsi_sg(cmd->conn->qedi, cmd);
1950 struct scsi_sge *bd = cmd->io_tbl.sge_tbl;
1952 bd[0].sge_addr.lo = 0;
1953 bd[0].sge_addr.hi = 0;
1957 cmd->io_tbl.sge_valid = bd_count;
1960 static void qedi_cpy_scsi_cdb(struct scsi_cmnd *sc, u32 *dstp)
1966 lpcnt = sc->cmd_len / sizeof(dword);
1967 srcp = (u8 *)sc->cmnd;
1969 memcpy(&dword, (const void *)srcp, 4);
1970 *dstp = cpu_to_be32(dword);
1974 if (sc->cmd_len & 0x3) {
1975 dword = (u32)srcp[0] | ((u32)srcp[1] << 8);
1976 *dstp = cpu_to_be32(dword);
1980 void qedi_trace_io(struct qedi_ctx *qedi, struct iscsi_task *task,
1981 u16 tid, int8_t direction)
1983 struct qedi_io_log *io_log;
1984 struct iscsi_conn *conn = task->conn;
1985 struct qedi_conn *qedi_conn = conn->dd_data;
1986 struct scsi_cmnd *sc_cmd = task->sc;
1987 unsigned long flags;
1989 spin_lock_irqsave(&qedi->io_trace_lock, flags);
1991 io_log = &qedi->io_trace_buf[qedi->io_trace_idx];
1992 io_log->direction = direction;
1993 io_log->task_id = tid;
1994 io_log->cid = qedi_conn->iscsi_conn_id;
1995 io_log->lun = sc_cmd->device->lun;
1996 io_log->op = sc_cmd->cmnd[0];
1997 io_log->lba[0] = sc_cmd->cmnd[2];
1998 io_log->lba[1] = sc_cmd->cmnd[3];
1999 io_log->lba[2] = sc_cmd->cmnd[4];
2000 io_log->lba[3] = sc_cmd->cmnd[5];
2001 io_log->bufflen = scsi_bufflen(sc_cmd);
2002 io_log->sg_count = scsi_sg_count(sc_cmd);
2003 io_log->fast_sgs = qedi->fast_sgls;
2004 io_log->cached_sgs = qedi->cached_sgls;
2005 io_log->slow_sgs = qedi->slow_sgls;
2006 io_log->cached_sge = qedi->use_cached_sge;
2007 io_log->slow_sge = qedi->use_slow_sge;
2008 io_log->fast_sge = qedi->use_fast_sge;
2009 io_log->result = sc_cmd->result;
2010 io_log->jiffies = jiffies;
2011 io_log->blk_req_cpu = smp_processor_id();
2013 if (direction == QEDI_IO_TRACE_REQ) {
2014 /* For requests we only care about the submission CPU */
2015 io_log->req_cpu = smp_processor_id() % qedi->num_queues;
2016 io_log->intr_cpu = 0;
2017 io_log->blk_rsp_cpu = 0;
2018 } else if (direction == QEDI_IO_TRACE_RSP) {
2019 io_log->req_cpu = smp_processor_id() % qedi->num_queues;
2020 io_log->intr_cpu = qedi->intr_cpu;
2021 io_log->blk_rsp_cpu = smp_processor_id();
2024 qedi->io_trace_idx++;
2025 if (qedi->io_trace_idx == QEDI_IO_TRACE_SIZE)
2026 qedi->io_trace_idx = 0;
2028 qedi->use_cached_sge = false;
2029 qedi->use_slow_sge = false;
2030 qedi->use_fast_sge = false;
2032 spin_unlock_irqrestore(&qedi->io_trace_lock, flags);
2035 int qedi_iscsi_send_ioreq(struct iscsi_task *task)
2037 struct iscsi_conn *conn = task->conn;
2038 struct iscsi_session *session = conn->session;
2039 struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session);
2040 struct qedi_ctx *qedi = iscsi_host_priv(shost);
2041 struct qedi_conn *qedi_conn = conn->dd_data;
2042 struct qedi_cmd *cmd = task->dd_data;
2043 struct scsi_cmnd *sc = task->sc;
2044 struct iscsi_cmd_hdr cmd_pdu_header;
2045 struct scsi_sgl_task_params tx_sgl_task_params;
2046 struct scsi_sgl_task_params rx_sgl_task_params;
2047 struct scsi_sgl_task_params *prx_sgl = NULL;
2048 struct scsi_sgl_task_params *ptx_sgl = NULL;
2049 struct iscsi_task_params task_params;
2050 struct iscsi_conn_params conn_params;
2051 struct scsi_initiator_cmd_params cmd_params;
2052 struct e4_iscsi_task_context *fw_task_ctx;
2053 struct iscsi_cls_conn *cls_conn;
2054 struct iscsi_scsi_req *hdr = (struct iscsi_scsi_req *)task->hdr;
2055 enum iscsi_task_type task_type = MAX_ISCSI_TASK_TYPE;
2056 struct qedi_endpoint *ep;
2064 cls_conn = qedi_conn->cls_conn;
2065 conn = cls_conn->dd_data;
2067 qedi_iscsi_map_sg_list(cmd);
2068 int_to_scsilun(sc->device->lun, (struct scsi_lun *)scsi_lun);
2070 tid = qedi_get_task_idx(qedi);
2075 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,
2077 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context));
2081 memset(&task_params, 0, sizeof(task_params));
2082 memset(&cmd_pdu_header, 0, sizeof(cmd_pdu_header));
2083 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));
2084 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));
2085 memset(&conn_params, 0, sizeof(conn_params));
2086 memset(&cmd_params, 0, sizeof(cmd_params));
2088 cq_idx = smp_processor_id() % qedi->num_queues;
2089 /* Update header info */
2090 SET_FIELD(cmd_pdu_header.flags_attr, ISCSI_CMD_HDR_ATTR,
2092 if (hdr->cdb[0] != TEST_UNIT_READY) {
2093 if (sc->sc_data_direction == DMA_TO_DEVICE) {
2094 SET_FIELD(cmd_pdu_header.flags_attr,
2095 ISCSI_CMD_HDR_WRITE, 1);
2096 task_type = ISCSI_TASK_TYPE_INITIATOR_WRITE;
2098 SET_FIELD(cmd_pdu_header.flags_attr,
2099 ISCSI_CMD_HDR_READ, 1);
2100 task_type = ISCSI_TASK_TYPE_INITIATOR_READ;
2104 cmd_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]);
2105 cmd_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]);
2107 qedi_update_itt_map(qedi, tid, task->itt, cmd);
2108 cmd_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));
2109 cmd_pdu_header.expected_transfer_length = cpu_to_be32(hdr->data_length);
2110 cmd_pdu_header.hdr_second_dword = ntoh24(hdr->dlength);
2111 cmd_pdu_header.cmd_sn = be32_to_cpu(hdr->cmdsn);
2112 cmd_pdu_header.hdr_first_byte = hdr->opcode;
2113 qedi_cpy_scsi_cdb(sc, (u32 *)cmd_pdu_header.cdb);
2115 /* Fill tx AHS and rx buffer */
2116 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) {
2117 tx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl;
2118 tx_sgl_task_params.sgl_phys_addr.lo =
2119 (u32)(cmd->io_tbl.sge_tbl_dma);
2120 tx_sgl_task_params.sgl_phys_addr.hi =
2121 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32);
2122 tx_sgl_task_params.total_buffer_size = scsi_bufflen(sc);
2123 tx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid;
2124 if (cmd->use_slowpath)
2125 tx_sgl_task_params.small_mid_sge = true;
2126 } else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) {
2127 rx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl;
2128 rx_sgl_task_params.sgl_phys_addr.lo =
2129 (u32)(cmd->io_tbl.sge_tbl_dma);
2130 rx_sgl_task_params.sgl_phys_addr.hi =
2131 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32);
2132 rx_sgl_task_params.total_buffer_size = scsi_bufflen(sc);
2133 rx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid;
2136 /* Add conn param */
2137 conn_params.first_burst_length = conn->session->first_burst;
2138 conn_params.max_send_pdu_length = conn->max_xmit_dlength;
2139 conn_params.max_burst_length = conn->session->max_burst;
2140 if (conn->session->initial_r2t_en)
2141 conn_params.initial_r2t = true;
2142 if (conn->session->imm_data_en)
2143 conn_params.immediate_data = true;
2145 /* Add cmd params */
2146 cmd_params.sense_data_buffer_phys_addr.lo = (u32)cmd->sense_buffer_dma;
2147 cmd_params.sense_data_buffer_phys_addr.hi =
2148 (u32)((u64)cmd->sense_buffer_dma >> 32);
2149 /* Fill fw input params */
2150 task_params.context = fw_task_ctx;
2151 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;
2152 task_params.itid = tid;
2153 task_params.cq_rss_number = cq_idx;
2154 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE)
2155 task_params.tx_io_size = scsi_bufflen(sc);
2156 else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ)
2157 task_params.rx_io_size = scsi_bufflen(sc);
2159 sq_idx = qedi_get_wqe_idx(qedi_conn);
2160 task_params.sqe = &ep->sq[sq_idx];
2162 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
2163 "%s: %s-SGL: sg_len=0x%x num_sges=0x%x first-sge-lo=0x%x first-sge-hi=0x%x\n",
2164 (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) ?
2165 "Write " : "Read ", (cmd->io_tbl.sge_valid == 1) ?
2166 "Single" : (cmd->use_slowpath ? "SLOW" : "FAST"),
2167 (u16)cmd->io_tbl.sge_valid, scsi_bufflen(sc),
2168 (u32)(cmd->io_tbl.sge_tbl_dma),
2169 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32));
2171 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
2173 if (task_params.tx_io_size != 0)
2174 ptx_sgl = &tx_sgl_task_params;
2175 if (task_params.rx_io_size != 0)
2176 prx_sgl = &rx_sgl_task_params;
2178 rval = init_initiator_rw_iscsi_task(&task_params, &conn_params,
2179 &cmd_params, &cmd_pdu_header,
2185 spin_lock(&qedi_conn->list_lock);
2186 list_add_tail(&cmd->io_cmd, &qedi_conn->active_cmd_list);
2187 cmd->io_cmd_in_list = true;
2188 qedi_conn->active_cmd_count++;
2189 spin_unlock(&qedi_conn->list_lock);
2191 qedi_ring_doorbell(qedi_conn);
2195 int qedi_iscsi_cleanup_task(struct iscsi_task *task, bool mark_cmd_node_deleted)
2197 struct iscsi_task_params task_params;
2198 struct qedi_endpoint *ep;
2199 struct iscsi_conn *conn = task->conn;
2200 struct qedi_conn *qedi_conn = conn->dd_data;
2201 struct qedi_cmd *cmd = task->dd_data;
2205 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_SCSI_TM,
2206 "issue cleanup tid=0x%x itt=0x%x task_state=%d cmd_state=0%x cid=0x%x\n",
2207 cmd->task_id, get_itt(task->itt), task->state,
2208 cmd->state, qedi_conn->iscsi_conn_id);
2210 memset(&task_params, 0, sizeof(task_params));
2213 sq_idx = qedi_get_wqe_idx(qedi_conn);
2215 task_params.sqe = &ep->sq[sq_idx];
2216 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
2217 task_params.itid = cmd->task_id;
2219 rval = init_cleanup_task(&task_params);
2223 qedi_ring_doorbell(qedi_conn);