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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * QLogic iSCSI Offload Driver4 * Copyright (c) 2016 Cavium Inc.5 */6 7#include <linux/blkdev.h>8#include <scsi/scsi_tcq.h>9#include <linux/delay.h>10 11#include "qedi.h"12#include "qedi_iscsi.h"13#include "qedi_gbl.h"14#include "qedi_fw_iscsi.h"15#include "qedi_fw_scsi.h"16 17static int send_iscsi_tmf(struct qedi_conn *qedi_conn,18 struct iscsi_task *mtask, struct iscsi_task *ctask);19 20void qedi_iscsi_unmap_sg_list(struct qedi_cmd *cmd)21{22 struct scsi_cmnd *sc = cmd->scsi_cmd;23 24 if (cmd->io_tbl.sge_valid && sc) {25 cmd->io_tbl.sge_valid = 0;26 scsi_dma_unmap(sc);27 }28}29 30static void qedi_process_logout_resp(struct qedi_ctx *qedi,31 union iscsi_cqe *cqe,32 struct iscsi_task *task,33 struct qedi_conn *qedi_conn)34{35 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;36 struct iscsi_logout_rsp *resp_hdr;37 struct iscsi_session *session = conn->session;38 struct iscsi_logout_response_hdr *cqe_logout_response;39 struct qedi_cmd *cmd;40 41 cmd = (struct qedi_cmd *)task->dd_data;42 cqe_logout_response = &cqe->cqe_common.iscsi_hdr.logout_response;43 spin_lock(&session->back_lock);44 resp_hdr = (struct iscsi_logout_rsp *)&qedi_conn->gen_pdu.resp_hdr;45 memset(resp_hdr, 0, sizeof(struct iscsi_hdr));46 resp_hdr->opcode = cqe_logout_response->opcode;47 resp_hdr->flags = cqe_logout_response->flags;48 resp_hdr->hlength = 0;49 50 resp_hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age);51 resp_hdr->statsn = cpu_to_be32(cqe_logout_response->stat_sn);52 resp_hdr->exp_cmdsn = cpu_to_be32(cqe_logout_response->exp_cmd_sn);53 resp_hdr->max_cmdsn = cpu_to_be32(cqe_logout_response->max_cmd_sn);54 55 resp_hdr->t2wait = cpu_to_be32(cqe_logout_response->time_2_wait);56 resp_hdr->t2retain = cpu_to_be32(cqe_logout_response->time_2_retain);57 58 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,59 "Freeing tid=0x%x for cid=0x%x\n",60 cmd->task_id, qedi_conn->iscsi_conn_id);61 62 spin_lock(&qedi_conn->list_lock);63 if (likely(cmd->io_cmd_in_list)) {64 cmd->io_cmd_in_list = false;65 list_del_init(&cmd->io_cmd);66 qedi_conn->active_cmd_count--;67 } else {68 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,69 "Active cmd list node already deleted, tid=0x%x, cid=0x%x, io_cmd_node=%p\n",70 cmd->task_id, qedi_conn->iscsi_conn_id,71 &cmd->io_cmd);72 }73 spin_unlock(&qedi_conn->list_lock);74 75 cmd->state = RESPONSE_RECEIVED;76 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0);77 78 spin_unlock(&session->back_lock);79}80 81static void qedi_process_text_resp(struct qedi_ctx *qedi,82 union iscsi_cqe *cqe,83 struct iscsi_task *task,84 struct qedi_conn *qedi_conn)85{86 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;87 struct iscsi_session *session = conn->session;88 struct iscsi_task_context *task_ctx;89 struct iscsi_text_rsp *resp_hdr_ptr;90 struct iscsi_text_response_hdr *cqe_text_response;91 struct qedi_cmd *cmd;92 int pld_len;93 94 cmd = (struct qedi_cmd *)task->dd_data;95 task_ctx = qedi_get_task_mem(&qedi->tasks, cmd->task_id);96 97 cqe_text_response = &cqe->cqe_common.iscsi_hdr.text_response;98 spin_lock(&session->back_lock);99 resp_hdr_ptr = (struct iscsi_text_rsp *)&qedi_conn->gen_pdu.resp_hdr;100 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_hdr));101 resp_hdr_ptr->opcode = cqe_text_response->opcode;102 resp_hdr_ptr->flags = cqe_text_response->flags;103 resp_hdr_ptr->hlength = 0;104 105 hton24(resp_hdr_ptr->dlength,106 (cqe_text_response->hdr_second_dword &107 ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK));108 109 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid,110 conn->session->age);111 resp_hdr_ptr->ttt = cqe_text_response->ttt;112 resp_hdr_ptr->statsn = cpu_to_be32(cqe_text_response->stat_sn);113 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_text_response->exp_cmd_sn);114 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_text_response->max_cmd_sn);115 116 pld_len = cqe_text_response->hdr_second_dword &117 ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK;118 qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len;119 120 memset(task_ctx, '\0', sizeof(*task_ctx));121 122 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,123 "Freeing tid=0x%x for cid=0x%x\n",124 cmd->task_id, qedi_conn->iscsi_conn_id);125 126 spin_lock(&qedi_conn->list_lock);127 if (likely(cmd->io_cmd_in_list)) {128 cmd->io_cmd_in_list = false;129 list_del_init(&cmd->io_cmd);130 qedi_conn->active_cmd_count--;131 } else {132 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,133 "Active cmd list node already deleted, tid=0x%x, cid=0x%x, io_cmd_node=%p\n",134 cmd->task_id, qedi_conn->iscsi_conn_id,135 &cmd->io_cmd);136 }137 spin_unlock(&qedi_conn->list_lock);138 139 cmd->state = RESPONSE_RECEIVED;140 141 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr,142 qedi_conn->gen_pdu.resp_buf,143 (qedi_conn->gen_pdu.resp_wr_ptr -144 qedi_conn->gen_pdu.resp_buf));145 spin_unlock(&session->back_lock);146}147 148static void qedi_tmf_resp_work(struct work_struct *work)149{150 struct qedi_cmd *qedi_cmd =151 container_of(work, struct qedi_cmd, tmf_work);152 struct qedi_conn *qedi_conn = qedi_cmd->conn;153 struct qedi_ctx *qedi = qedi_conn->qedi;154 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;155 struct iscsi_session *session = conn->session;156 struct iscsi_tm_rsp *resp_hdr_ptr;157 int rval = 0;158 159 resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf;160 161 rval = qedi_cleanup_all_io(qedi, qedi_conn, qedi_cmd->task, true);162 if (rval)163 goto exit_tmf_resp;164 165 spin_lock(&session->back_lock);166 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0);167 spin_unlock(&session->back_lock);168 169exit_tmf_resp:170 kfree(resp_hdr_ptr);171 172 spin_lock(&qedi_conn->tmf_work_lock);173 qedi_conn->fw_cleanup_works--;174 spin_unlock(&qedi_conn->tmf_work_lock);175}176 177static void qedi_process_tmf_resp(struct qedi_ctx *qedi,178 union iscsi_cqe *cqe,179 struct iscsi_task *task,180 struct qedi_conn *qedi_conn)181 182{183 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;184 struct iscsi_session *session = conn->session;185 struct iscsi_tmf_response_hdr *cqe_tmp_response;186 struct iscsi_tm_rsp *resp_hdr_ptr;187 struct iscsi_tm *tmf_hdr;188 struct qedi_cmd *qedi_cmd = NULL;189 190 cqe_tmp_response = &cqe->cqe_common.iscsi_hdr.tmf_response;191 192 qedi_cmd = task->dd_data;193 qedi_cmd->tmf_resp_buf = kzalloc(sizeof(*resp_hdr_ptr), GFP_ATOMIC);194 if (!qedi_cmd->tmf_resp_buf) {195 QEDI_ERR(&qedi->dbg_ctx,196 "Failed to allocate resp buf, cid=0x%x\n",197 qedi_conn->iscsi_conn_id);198 return;199 }200 201 spin_lock(&session->back_lock);202 resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf;203 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_tm_rsp));204 205 /* Fill up the header */206 resp_hdr_ptr->opcode = cqe_tmp_response->opcode;207 resp_hdr_ptr->flags = cqe_tmp_response->hdr_flags;208 resp_hdr_ptr->response = cqe_tmp_response->hdr_response;209 resp_hdr_ptr->hlength = 0;210 211 hton24(resp_hdr_ptr->dlength,212 (cqe_tmp_response->hdr_second_dword &213 ISCSI_TMF_RESPONSE_HDR_DATA_SEG_LEN_MASK));214 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid,215 conn->session->age);216 resp_hdr_ptr->statsn = cpu_to_be32(cqe_tmp_response->stat_sn);217 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_tmp_response->exp_cmd_sn);218 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_tmp_response->max_cmd_sn);219 220 tmf_hdr = (struct iscsi_tm *)qedi_cmd->task->hdr;221 222 spin_lock(&qedi_conn->list_lock);223 if (likely(qedi_cmd->io_cmd_in_list)) {224 qedi_cmd->io_cmd_in_list = false;225 list_del_init(&qedi_cmd->io_cmd);226 qedi_conn->active_cmd_count--;227 }228 spin_unlock(&qedi_conn->list_lock);229 230 spin_lock(&qedi_conn->tmf_work_lock);231 switch (tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) {232 case ISCSI_TM_FUNC_LOGICAL_UNIT_RESET:233 case ISCSI_TM_FUNC_TARGET_WARM_RESET:234 case ISCSI_TM_FUNC_TARGET_COLD_RESET:235 if (qedi_conn->ep_disconnect_starting) {236 /* Session is down so ep_disconnect will clean up */237 spin_unlock(&qedi_conn->tmf_work_lock);238 goto unblock_sess;239 }240 241 qedi_conn->fw_cleanup_works++;242 spin_unlock(&qedi_conn->tmf_work_lock);243 244 INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_resp_work);245 queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work);246 goto unblock_sess;247 }248 spin_unlock(&qedi_conn->tmf_work_lock);249 250 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0);251 kfree(resp_hdr_ptr);252 253unblock_sess:254 spin_unlock(&session->back_lock);255}256 257static void qedi_process_login_resp(struct qedi_ctx *qedi,258 union iscsi_cqe *cqe,259 struct iscsi_task *task,260 struct qedi_conn *qedi_conn)261{262 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;263 struct iscsi_session *session = conn->session;264 struct iscsi_task_context *task_ctx;265 struct iscsi_login_rsp *resp_hdr_ptr;266 struct iscsi_login_response_hdr *cqe_login_response;267 struct qedi_cmd *cmd;268 int pld_len;269 270 cmd = (struct qedi_cmd *)task->dd_data;271 272 cqe_login_response = &cqe->cqe_common.iscsi_hdr.login_response;273 task_ctx = qedi_get_task_mem(&qedi->tasks, cmd->task_id);274 275 spin_lock(&session->back_lock);276 resp_hdr_ptr = (struct iscsi_login_rsp *)&qedi_conn->gen_pdu.resp_hdr;277 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_login_rsp));278 resp_hdr_ptr->opcode = cqe_login_response->opcode;279 resp_hdr_ptr->flags = cqe_login_response->flags_attr;280 resp_hdr_ptr->hlength = 0;281 282 hton24(resp_hdr_ptr->dlength,283 (cqe_login_response->hdr_second_dword &284 ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK));285 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid,286 conn->session->age);287 resp_hdr_ptr->tsih = cqe_login_response->tsih;288 resp_hdr_ptr->statsn = cpu_to_be32(cqe_login_response->stat_sn);289 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_login_response->exp_cmd_sn);290 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_login_response->max_cmd_sn);291 resp_hdr_ptr->status_class = cqe_login_response->status_class;292 resp_hdr_ptr->status_detail = cqe_login_response->status_detail;293 pld_len = cqe_login_response->hdr_second_dword &294 ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK;295 qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len;296 297 spin_lock(&qedi_conn->list_lock);298 if (likely(cmd->io_cmd_in_list)) {299 cmd->io_cmd_in_list = false;300 list_del_init(&cmd->io_cmd);301 qedi_conn->active_cmd_count--;302 }303 spin_unlock(&qedi_conn->list_lock);304 305 memset(task_ctx, '\0', sizeof(*task_ctx));306 307 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr,308 qedi_conn->gen_pdu.resp_buf,309 (qedi_conn->gen_pdu.resp_wr_ptr -310 qedi_conn->gen_pdu.resp_buf));311 312 spin_unlock(&session->back_lock);313 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,314 "Freeing tid=0x%x for cid=0x%x\n",315 cmd->task_id, qedi_conn->iscsi_conn_id);316 cmd->state = RESPONSE_RECEIVED;317}318 319static void qedi_get_rq_bdq_buf(struct qedi_ctx *qedi,320 struct iscsi_cqe_unsolicited *cqe,321 char *ptr, int len)322{323 u16 idx = 0;324 325 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,326 "pld_len [%d], bdq_prod_idx [%d], idx [%d]\n",327 len, qedi->bdq_prod_idx,328 (qedi->bdq_prod_idx % qedi->rq_num_entries));329 330 /* Obtain buffer address from rqe_opaque */331 idx = cqe->rqe_opaque;332 if (idx > (QEDI_BDQ_NUM - 1)) {333 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,334 "wrong idx %d returned by FW, dropping the unsolicited pkt\n",335 idx);336 return;337 }338 339 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,340 "rqe_opaque [0x%p], idx [%d]\n", cqe->rqe_opaque, idx);341 342 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,343 "unsol_cqe_type = %d\n", cqe->unsol_cqe_type);344 switch (cqe->unsol_cqe_type) {345 case ISCSI_CQE_UNSOLICITED_SINGLE:346 case ISCSI_CQE_UNSOLICITED_FIRST:347 if (len)348 memcpy(ptr, (void *)qedi->bdq[idx].buf_addr, len);349 break;350 case ISCSI_CQE_UNSOLICITED_MIDDLE:351 case ISCSI_CQE_UNSOLICITED_LAST:352 break;353 default:354 break;355 }356}357 358static void qedi_put_rq_bdq_buf(struct qedi_ctx *qedi,359 struct iscsi_cqe_unsolicited *cqe,360 int count)361{362 u16 idx = 0;363 struct scsi_bd *pbl;364 365 /* Obtain buffer address from rqe_opaque */366 idx = cqe->rqe_opaque;367 if (idx > (QEDI_BDQ_NUM - 1)) {368 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,369 "wrong idx %d returned by FW, dropping the unsolicited pkt\n",370 idx);371 return;372 }373 374 pbl = (struct scsi_bd *)qedi->bdq_pbl;375 pbl += (qedi->bdq_prod_idx % qedi->rq_num_entries);376 pbl->address.hi = cpu_to_le32(QEDI_U64_HI(qedi->bdq[idx].buf_dma));377 pbl->address.lo = cpu_to_le32(QEDI_U64_LO(qedi->bdq[idx].buf_dma));378 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,379 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx] idx [%d]\n",380 pbl, pbl->address.hi, pbl->address.lo, idx);381 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0;382 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0;383 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0;384 pbl->opaque.iscsi_opaque.opaque = cpu_to_le32(idx);385 386 /* Increment producer to let f/w know we've handled the frame */387 qedi->bdq_prod_idx += count;388 389 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);390 readw(qedi->bdq_primary_prod);391 392 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);393 readw(qedi->bdq_secondary_prod);394}395 396static void qedi_unsol_pdu_adjust_bdq(struct qedi_ctx *qedi,397 struct iscsi_cqe_unsolicited *cqe,398 u32 pdu_len, u32 num_bdqs,399 char *bdq_data)400{401 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,402 "num_bdqs [%d]\n", num_bdqs);403 404 qedi_get_rq_bdq_buf(qedi, cqe, bdq_data, pdu_len);405 qedi_put_rq_bdq_buf(qedi, cqe, (num_bdqs + 1));406}407 408static int qedi_process_nopin_mesg(struct qedi_ctx *qedi,409 union iscsi_cqe *cqe,410 struct iscsi_task *task,411 struct qedi_conn *qedi_conn, u16 que_idx)412{413 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;414 struct iscsi_session *session = conn->session;415 struct iscsi_nop_in_hdr *cqe_nop_in;416 struct iscsi_nopin *hdr;417 struct qedi_cmd *cmd;418 int tgt_async_nop = 0;419 u32 lun[2];420 u32 pdu_len, num_bdqs;421 char bdq_data[QEDI_BDQ_BUF_SIZE];422 unsigned long flags;423 424 spin_lock_bh(&session->back_lock);425 cqe_nop_in = &cqe->cqe_common.iscsi_hdr.nop_in;426 427 pdu_len = cqe_nop_in->hdr_second_dword &428 ISCSI_NOP_IN_HDR_DATA_SEG_LEN_MASK;429 num_bdqs = pdu_len / QEDI_BDQ_BUF_SIZE;430 431 hdr = (struct iscsi_nopin *)&qedi_conn->gen_pdu.resp_hdr;432 memset(hdr, 0, sizeof(struct iscsi_hdr));433 hdr->opcode = cqe_nop_in->opcode;434 hdr->max_cmdsn = cpu_to_be32(cqe_nop_in->max_cmd_sn);435 hdr->exp_cmdsn = cpu_to_be32(cqe_nop_in->exp_cmd_sn);436 hdr->statsn = cpu_to_be32(cqe_nop_in->stat_sn);437 hdr->ttt = cpu_to_be32(cqe_nop_in->ttt);438 439 if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) {440 spin_lock_irqsave(&qedi->hba_lock, flags);441 qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited,442 pdu_len, num_bdqs, bdq_data);443 hdr->itt = RESERVED_ITT;444 tgt_async_nop = 1;445 spin_unlock_irqrestore(&qedi->hba_lock, flags);446 goto done;447 }448 449 /* Response to one of our nop-outs */450 if (task) {451 cmd = task->dd_data;452 hdr->flags = ISCSI_FLAG_CMD_FINAL;453 hdr->itt = build_itt(cqe->cqe_solicited.itid,454 conn->session->age);455 lun[0] = 0xffffffff;456 lun[1] = 0xffffffff;457 memcpy(&hdr->lun, lun, sizeof(struct scsi_lun));458 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,459 "Freeing tid=0x%x for cid=0x%x\n",460 cmd->task_id, qedi_conn->iscsi_conn_id);461 cmd->state = RESPONSE_RECEIVED;462 spin_lock(&qedi_conn->list_lock);463 if (likely(cmd->io_cmd_in_list)) {464 cmd->io_cmd_in_list = false;465 list_del_init(&cmd->io_cmd);466 qedi_conn->active_cmd_count--;467 }468 469 spin_unlock(&qedi_conn->list_lock);470 }471 472done:473 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, bdq_data, pdu_len);474 475 spin_unlock_bh(&session->back_lock);476 return tgt_async_nop;477}478 479static 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,483 u16 que_idx)484{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;489 u32 lun[2];490 u32 pdu_len, num_bdqs;491 char bdq_data[QEDI_BDQ_BUF_SIZE];492 unsigned long flags;493 494 spin_lock_bh(&session->back_lock);495 496 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;500 501 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);506 }507 508 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;512 513 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);519 520 resp_hdr->async_event = cqe_async_msg->async_event;521 resp_hdr->async_vcode = cqe_async_msg->async_vcode;522 523 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);526 527 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, bdq_data,528 pdu_len);529 530 spin_unlock_bh(&session->back_lock);531}532 533static 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,537 uint16_t que_idx)538{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;544 unsigned long flags;545 546 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;551 552 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);557 }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);569 570 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr,571 conn->data, pld_len);572 spin_unlock_bh(&session->back_lock);573}574 575static void qedi_scsi_completion(struct qedi_ctx *qedi,576 union iscsi_cqe *cqe,577 struct iscsi_task *task,578 struct iscsi_conn *conn)579{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;585 int datalen = 0;586 struct qedi_conn *qedi_conn;587 u32 iscsi_cid;588 u8 cqe_err_bits = 0;589 590 iscsi_cid = cqe->cqe_common.conn_id;591 qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];592 593 cqe_data_in = &cqe->cqe_common.iscsi_hdr.data_in;594 cqe_err_bits =595 cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits;596 597 spin_lock_bh(&session->back_lock);598 /* get the scsi command */599 sc_cmd = cmd->scsi_cmd;600 601 if (!sc_cmd) {602 QEDI_WARN(&qedi->dbg_ctx, "sc_cmd is NULL!\n");603 goto error;604 }605 606 if (!iscsi_cmd(sc_cmd)->task) {607 QEDI_WARN(&qedi->dbg_ctx,608 "NULL task pointer, returned in another context.\n");609 goto error;610 }611 612 if (!scsi_cmd_to_rq(sc_cmd)->q) {613 QEDI_WARN(&qedi->dbg_ctx,614 "request->q is NULL so request is not valid, sc_cmd=%p.\n",615 sc_cmd);616 goto error;617 }618 619 qedi_iscsi_unmap_sg_list(cmd);620 621 hdr = (struct iscsi_scsi_rsp *)task->hdr;622 hdr->opcode = cqe_data_in->opcode;623 hdr->max_cmdsn = cpu_to_be32(cqe_data_in->max_cmd_sn);624 hdr->exp_cmdsn = cpu_to_be32(cqe_data_in->exp_cmd_sn);625 hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age);626 hdr->response = cqe_data_in->reserved1;627 hdr->cmd_status = cqe_data_in->status_rsvd;628 hdr->flags = cqe_data_in->flags;629 hdr->residual_count = cpu_to_be32(cqe_data_in->residual_count);630 631 if (hdr->cmd_status == SAM_STAT_CHECK_CONDITION) {632 datalen = cqe_data_in->reserved2 &633 ISCSI_COMMON_HDR_DATA_SEG_LEN_MASK;634 memcpy((char *)conn->data, (char *)cmd->sense_buffer, datalen);635 }636 637 /* If f/w reports data underrun err then set residual to IO transfer638 * length, set Underrun flag and clear Overrun flag explicitly639 */640 if (unlikely(cqe_err_bits &&641 GET_FIELD(cqe_err_bits, CQE_ERROR_BITMAP_UNDER_RUN_ERR))) {642 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,643 "Under flow itt=0x%x proto flags=0x%x tid=0x%x cid 0x%x fw resid 0x%x sc dlen 0x%x\n",644 hdr->itt, cqe_data_in->flags, cmd->task_id,645 qedi_conn->iscsi_conn_id, hdr->residual_count,646 scsi_bufflen(sc_cmd));647 hdr->residual_count = cpu_to_be32(scsi_bufflen(sc_cmd));648 hdr->flags |= ISCSI_FLAG_CMD_UNDERFLOW;649 hdr->flags &= (~ISCSI_FLAG_CMD_OVERFLOW);650 }651 652 spin_lock(&qedi_conn->list_lock);653 if (likely(cmd->io_cmd_in_list)) {654 cmd->io_cmd_in_list = false;655 list_del_init(&cmd->io_cmd);656 qedi_conn->active_cmd_count--;657 }658 spin_unlock(&qedi_conn->list_lock);659 660 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID,661 "Freeing tid=0x%x for cid=0x%x\n",662 cmd->task_id, qedi_conn->iscsi_conn_id);663 cmd->state = RESPONSE_RECEIVED;664 if (qedi_io_tracing)665 qedi_trace_io(qedi, task, cmd->task_id, QEDI_IO_TRACE_RSP);666 667 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr,668 conn->data, datalen);669error:670 spin_unlock_bh(&session->back_lock);671}672 673static void qedi_mtask_completion(struct qedi_ctx *qedi,674 union iscsi_cqe *cqe,675 struct iscsi_task *task,676 struct qedi_conn *conn, uint16_t que_idx)677{678 struct iscsi_conn *iscsi_conn;679 u32 hdr_opcode;680 681 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte;682 iscsi_conn = conn->cls_conn->dd_data;683 684 switch (hdr_opcode) {685 case ISCSI_OPCODE_SCSI_RESPONSE:686 case ISCSI_OPCODE_DATA_IN:687 qedi_scsi_completion(qedi, cqe, task, iscsi_conn);688 break;689 case ISCSI_OPCODE_LOGIN_RESPONSE:690 qedi_process_login_resp(qedi, cqe, task, conn);691 break;692 case ISCSI_OPCODE_TMF_RESPONSE:693 qedi_process_tmf_resp(qedi, cqe, task, conn);694 break;695 case ISCSI_OPCODE_TEXT_RESPONSE:696 qedi_process_text_resp(qedi, cqe, task, conn);697 break;698 case ISCSI_OPCODE_LOGOUT_RESPONSE:699 qedi_process_logout_resp(qedi, cqe, task, conn);700 break;701 case ISCSI_OPCODE_NOP_IN:702 qedi_process_nopin_mesg(qedi, cqe, task, conn, que_idx);703 break;704 default:705 QEDI_ERR(&qedi->dbg_ctx, "unknown opcode\n");706 }707}708 709static void qedi_process_nopin_local_cmpl(struct qedi_ctx *qedi,710 struct iscsi_cqe_solicited *cqe,711 struct iscsi_task *task,712 struct qedi_conn *qedi_conn)713{714 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;715 struct iscsi_session *session = conn->session;716 struct qedi_cmd *cmd = task->dd_data;717 718 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UNSOL,719 "itid=0x%x, cmd task id=0x%x\n",720 cqe->itid, cmd->task_id);721 722 cmd->state = RESPONSE_RECEIVED;723 724 spin_lock_bh(&session->back_lock);725 __iscsi_put_task(task);726 spin_unlock_bh(&session->back_lock);727}728 729static void qedi_process_cmd_cleanup_resp(struct qedi_ctx *qedi,730 struct iscsi_cqe_solicited *cqe,731 struct iscsi_conn *conn)732{733 struct qedi_work_map *work, *work_tmp;734 u32 proto_itt = cqe->itid;735 int found = 0;736 struct qedi_cmd *qedi_cmd = NULL;737 u32 iscsi_cid;738 struct qedi_conn *qedi_conn;739 struct qedi_cmd *dbg_cmd;740 struct iscsi_task *mtask, *task;741 struct iscsi_tm *tmf_hdr = NULL;742 743 iscsi_cid = cqe->conn_id;744 qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];745 if (!qedi_conn) {746 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,747 "icid not found 0x%x\n", cqe->conn_id);748 return;749 }750 751 /* Based on this itt get the corresponding qedi_cmd */752 spin_lock_bh(&qedi_conn->tmf_work_lock);753 list_for_each_entry_safe(work, work_tmp, &qedi_conn->tmf_work_list,754 list) {755 if (work->rtid == proto_itt) {756 /* We found the command */757 qedi_cmd = work->qedi_cmd;758 if (!qedi_cmd->list_tmf_work) {759 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,760 "TMF work not found, cqe->tid=0x%x, cid=0x%x\n",761 proto_itt, qedi_conn->iscsi_conn_id);762 WARN_ON(1);763 }764 found = 1;765 mtask = qedi_cmd->task;766 task = work->ctask;767 tmf_hdr = (struct iscsi_tm *)mtask->hdr;768 769 list_del_init(&work->list);770 kfree(work);771 qedi_cmd->list_tmf_work = NULL;772 }773 }774 spin_unlock_bh(&qedi_conn->tmf_work_lock);775 776 if (!found)777 goto check_cleanup_reqs;778 779 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,780 "TMF work, cqe->tid=0x%x, tmf flags=0x%x, cid=0x%x\n",781 proto_itt, tmf_hdr->flags, qedi_conn->iscsi_conn_id);782 783 spin_lock_bh(&conn->session->back_lock);784 if (iscsi_task_is_completed(task)) {785 QEDI_NOTICE(&qedi->dbg_ctx,786 "IO task completed, tmf rtt=0x%x, cid=0x%x\n",787 get_itt(tmf_hdr->rtt), qedi_conn->iscsi_conn_id);788 goto unlock;789 }790 791 dbg_cmd = task->dd_data;792 793 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,794 "Abort tmf rtt=0x%x, i/o itt=0x%x, i/o tid=0x%x, cid=0x%x\n",795 get_itt(tmf_hdr->rtt), get_itt(task->itt), dbg_cmd->task_id,796 qedi_conn->iscsi_conn_id);797 798 spin_lock(&qedi_conn->list_lock);799 if (likely(dbg_cmd->io_cmd_in_list)) {800 dbg_cmd->io_cmd_in_list = false;801 list_del_init(&dbg_cmd->io_cmd);802 qedi_conn->active_cmd_count--;803 }804 spin_unlock(&qedi_conn->list_lock);805 qedi_cmd->state = CLEANUP_RECV;806unlock:807 spin_unlock_bh(&conn->session->back_lock);808 wake_up_interruptible(&qedi_conn->wait_queue);809 return;810 811check_cleanup_reqs:812 if (atomic_inc_return(&qedi_conn->cmd_cleanup_cmpl) ==813 qedi_conn->cmd_cleanup_req) {814 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,815 "Freeing tid=0x%x for cid=0x%x\n",816 cqe->itid, qedi_conn->iscsi_conn_id);817 wake_up(&qedi_conn->wait_queue);818 }819}820 821void qedi_fp_process_cqes(struct qedi_work *work)822{823 struct qedi_ctx *qedi = work->qedi;824 union iscsi_cqe *cqe = &work->cqe;825 struct iscsi_task *task = NULL;826 struct iscsi_nopout *nopout_hdr;827 struct qedi_conn *q_conn;828 struct iscsi_conn *conn;829 struct qedi_cmd *qedi_cmd;830 u32 comp_type;831 u32 iscsi_cid;832 u32 hdr_opcode;833 u16 que_idx = work->que_idx;834 u8 cqe_err_bits = 0;835 836 comp_type = cqe->cqe_common.cqe_type;837 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte;838 cqe_err_bits =839 cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits;840 841 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,842 "fw_cid=0x%x, cqe type=0x%x, opcode=0x%x\n",843 cqe->cqe_common.conn_id, comp_type, hdr_opcode);844 845 if (comp_type >= MAX_ISCSI_CQES_TYPE) {846 QEDI_WARN(&qedi->dbg_ctx, "Invalid CqE type\n");847 return;848 }849 850 iscsi_cid = cqe->cqe_common.conn_id;851 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];852 if (!q_conn) {853 QEDI_WARN(&qedi->dbg_ctx,854 "Session no longer exists for cid=0x%x!!\n",855 iscsi_cid);856 return;857 }858 859 conn = q_conn->cls_conn->dd_data;860 861 if (unlikely(cqe_err_bits &&862 GET_FIELD(cqe_err_bits,863 CQE_ERROR_BITMAP_DATA_DIGEST_ERR))) {864 iscsi_conn_failure(conn, ISCSI_ERR_DATA_DGST);865 return;866 }867 868 switch (comp_type) {869 case ISCSI_CQE_TYPE_SOLICITED:870 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:871 qedi_cmd = container_of(work, struct qedi_cmd, cqe_work);872 task = qedi_cmd->task;873 if (!task) {874 QEDI_WARN(&qedi->dbg_ctx, "task is NULL\n");875 return;876 }877 878 /* Process NOPIN local completion */879 nopout_hdr = (struct iscsi_nopout *)task->hdr;880 if ((nopout_hdr->itt == RESERVED_ITT) &&881 (cqe->cqe_solicited.itid != (u16)RESERVED_ITT)) {882 qedi_process_nopin_local_cmpl(qedi, &cqe->cqe_solicited,883 task, q_conn);884 } else {885 cqe->cqe_solicited.itid =886 qedi_get_itt(cqe->cqe_solicited);887 /* Process other solicited responses */888 qedi_mtask_completion(qedi, cqe, task, q_conn, que_idx);889 }890 break;891 case ISCSI_CQE_TYPE_UNSOLICITED:892 switch (hdr_opcode) {893 case ISCSI_OPCODE_NOP_IN:894 qedi_process_nopin_mesg(qedi, cqe, task, q_conn,895 que_idx);896 break;897 case ISCSI_OPCODE_ASYNC_MSG:898 qedi_process_async_mesg(qedi, cqe, task, q_conn,899 que_idx);900 break;901 case ISCSI_OPCODE_REJECT:902 qedi_process_reject_mesg(qedi, cqe, task, q_conn,903 que_idx);904 break;905 }906 goto exit_fp_process;907 case ISCSI_CQE_TYPE_DUMMY:908 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "Dummy CqE\n");909 goto exit_fp_process;910 case ISCSI_CQE_TYPE_TASK_CLEANUP:911 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "CleanUp CqE\n");912 qedi_process_cmd_cleanup_resp(qedi, &cqe->cqe_solicited, conn);913 goto exit_fp_process;914 default:915 QEDI_ERR(&qedi->dbg_ctx, "Error cqe.\n");916 break;917 }918 919exit_fp_process:920 return;921}922 923static void qedi_ring_doorbell(struct qedi_conn *qedi_conn)924{925 qedi_conn->ep->db_data.sq_prod = qedi_conn->ep->fw_sq_prod_idx;926 927 /* wmb - Make sure fw idx is coherent */928 wmb();929 writel(*(u32 *)&qedi_conn->ep->db_data, qedi_conn->ep->p_doorbell);930 931 /* Make sure fw write idx is coherent, and include both memory barriers932 * as a failsafe as for some architectures the call is the same but on933 * others they are two different assembly operations.934 */935 wmb();936 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_MP_REQ,937 "prod_idx=0x%x, fw_prod_idx=0x%x, cid=0x%x\n",938 qedi_conn->ep->sq_prod_idx, qedi_conn->ep->fw_sq_prod_idx,939 qedi_conn->iscsi_conn_id);940}941 942static u16 qedi_get_wqe_idx(struct qedi_conn *qedi_conn)943{944 struct qedi_endpoint *ep;945 u16 rval;946 947 ep = qedi_conn->ep;948 rval = ep->sq_prod_idx;949 950 /* Increament SQ index */951 ep->sq_prod_idx++;952 ep->fw_sq_prod_idx++;953 if (ep->sq_prod_idx == QEDI_SQ_SIZE)954 ep->sq_prod_idx = 0;955 956 return rval;957}958 959int qedi_send_iscsi_login(struct qedi_conn *qedi_conn,960 struct iscsi_task *task)961{962 struct iscsi_login_req_hdr login_req_pdu_header;963 struct scsi_sgl_task_params tx_sgl_task_params;964 struct scsi_sgl_task_params rx_sgl_task_params;965 struct iscsi_task_params task_params;966 struct iscsi_task_context *fw_task_ctx;967 struct qedi_ctx *qedi = qedi_conn->qedi;968 struct iscsi_login_req *login_hdr;969 struct scsi_sge *resp_sge = NULL;970 struct qedi_cmd *qedi_cmd;971 struct qedi_endpoint *ep;972 s16 tid = 0;973 u16 sq_idx = 0;974 int rval = 0;975 976 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;977 qedi_cmd = (struct qedi_cmd *)task->dd_data;978 ep = qedi_conn->ep;979 login_hdr = (struct iscsi_login_req *)task->hdr;980 981 tid = qedi_get_task_idx(qedi);982 if (tid == -1)983 return -ENOMEM;984 985 fw_task_ctx =986 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,987 tid);988 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context));989 990 qedi_cmd->task_id = tid;991 992 memset(&task_params, 0, sizeof(task_params));993 memset(&login_req_pdu_header, 0, sizeof(login_req_pdu_header));994 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));995 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));996 /* Update header info */997 login_req_pdu_header.opcode = login_hdr->opcode;998 login_req_pdu_header.version_min = login_hdr->min_version;999 login_req_pdu_header.version_max = login_hdr->max_version;1000 login_req_pdu_header.flags_attr = login_hdr->flags;1001 login_req_pdu_header.isid_tabc = swab32p((u32 *)login_hdr->isid);1002 login_req_pdu_header.isid_d = swab16p((u16 *)&login_hdr->isid[4]);1003 1004 login_req_pdu_header.tsih = login_hdr->tsih;1005 login_req_pdu_header.hdr_second_dword = ntoh24(login_hdr->dlength);1006 1007 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);1008 login_req_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));1009 login_req_pdu_header.cid = qedi_conn->iscsi_conn_id;1010 login_req_pdu_header.cmd_sn = be32_to_cpu(login_hdr->cmdsn);1011 login_req_pdu_header.exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn);1012 login_req_pdu_header.exp_stat_sn = 0;1013 1014 /* Fill tx AHS and rx buffer */1015 tx_sgl_task_params.sgl =1016 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;1017 tx_sgl_task_params.sgl_phys_addr.lo =1018 (u32)(qedi_conn->gen_pdu.req_dma_addr);1019 tx_sgl_task_params.sgl_phys_addr.hi =1020 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);1021 tx_sgl_task_params.total_buffer_size = ntoh24(login_hdr->dlength);1022 tx_sgl_task_params.num_sges = 1;1023 1024 rx_sgl_task_params.sgl =1025 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;1026 rx_sgl_task_params.sgl_phys_addr.lo =1027 (u32)(qedi_conn->gen_pdu.resp_dma_addr);1028 rx_sgl_task_params.sgl_phys_addr.hi =1029 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);1030 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len;1031 rx_sgl_task_params.num_sges = 1;1032 1033 /* Fill fw input params */1034 task_params.context = fw_task_ctx;1035 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;1036 task_params.itid = tid;1037 task_params.cq_rss_number = 0;1038 task_params.tx_io_size = ntoh24(login_hdr->dlength);1039 task_params.rx_io_size = resp_sge->sge_len;1040 1041 sq_idx = qedi_get_wqe_idx(qedi_conn);1042 task_params.sqe = &ep->sq[sq_idx];1043 1044 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));1045 rval = init_initiator_login_request_task(&task_params,1046 &login_req_pdu_header,1047 &tx_sgl_task_params,1048 &rx_sgl_task_params);1049 if (rval)1050 return -1;1051 1052 spin_lock(&qedi_conn->list_lock);1053 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);1054 qedi_cmd->io_cmd_in_list = true;1055 qedi_conn->active_cmd_count++;1056 spin_unlock(&qedi_conn->list_lock);1057 1058 qedi_ring_doorbell(qedi_conn);1059 return 0;1060}1061 1062int qedi_send_iscsi_logout(struct qedi_conn *qedi_conn,1063 struct iscsi_task *task)1064{1065 struct iscsi_logout_req_hdr logout_pdu_header;1066 struct scsi_sgl_task_params tx_sgl_task_params;1067 struct scsi_sgl_task_params rx_sgl_task_params;1068 struct iscsi_task_params task_params;1069 struct iscsi_task_context *fw_task_ctx;1070 struct iscsi_logout *logout_hdr = NULL;1071 struct qedi_ctx *qedi = qedi_conn->qedi;1072 struct qedi_cmd *qedi_cmd;1073 struct qedi_endpoint *ep;1074 s16 tid = 0;1075 u16 sq_idx = 0;1076 int rval = 0;1077 1078 qedi_cmd = (struct qedi_cmd *)task->dd_data;1079 logout_hdr = (struct iscsi_logout *)task->hdr;1080 ep = qedi_conn->ep;1081 1082 tid = qedi_get_task_idx(qedi);1083 if (tid == -1)1084 return -ENOMEM;1085 1086 fw_task_ctx =1087 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,1088 tid);1089 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context));1090 1091 qedi_cmd->task_id = tid;1092 1093 memset(&task_params, 0, sizeof(task_params));1094 memset(&logout_pdu_header, 0, sizeof(logout_pdu_header));1095 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));1096 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));1097 1098 /* Update header info */1099 logout_pdu_header.opcode = logout_hdr->opcode;1100 logout_pdu_header.reason_code = 0x80 | logout_hdr->flags;1101 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);1102 logout_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));1103 logout_pdu_header.exp_stat_sn = be32_to_cpu(logout_hdr->exp_statsn);1104 logout_pdu_header.cmd_sn = be32_to_cpu(logout_hdr->cmdsn);1105 logout_pdu_header.cid = qedi_conn->iscsi_conn_id;1106 1107 /* Fill fw input params */1108 task_params.context = fw_task_ctx;1109 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;1110 task_params.itid = tid;1111 task_params.cq_rss_number = 0;1112 task_params.tx_io_size = 0;1113 task_params.rx_io_size = 0;1114 1115 sq_idx = qedi_get_wqe_idx(qedi_conn);1116 task_params.sqe = &ep->sq[sq_idx];1117 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));1118 1119 rval = init_initiator_logout_request_task(&task_params,1120 &logout_pdu_header,1121 NULL, NULL);1122 if (rval)1123 return -1;1124 1125 spin_lock(&qedi_conn->list_lock);1126 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);1127 qedi_cmd->io_cmd_in_list = true;1128 qedi_conn->active_cmd_count++;1129 spin_unlock(&qedi_conn->list_lock);1130 1131 qedi_ring_doorbell(qedi_conn);1132 return 0;1133}1134 1135int qedi_cleanup_all_io(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn,1136 struct iscsi_task *task, bool in_recovery)1137{1138 int rval;1139 struct iscsi_task *ctask;1140 struct qedi_cmd *cmd, *cmd_tmp;1141 struct iscsi_tm *tmf_hdr;1142 unsigned int lun = 0;1143 bool lun_reset = false;1144 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;1145 struct iscsi_session *session = conn->session;1146 1147 /* From recovery, task is NULL or from tmf resp valid task */1148 if (task) {1149 tmf_hdr = (struct iscsi_tm *)task->hdr;1150 1151 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==1152 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) {1153 lun_reset = true;1154 lun = scsilun_to_int(&tmf_hdr->lun);1155 }1156 }1157 1158 qedi_conn->cmd_cleanup_req = 0;1159 atomic_set(&qedi_conn->cmd_cleanup_cmpl, 0);1160 1161 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,1162 "active_cmd_count=%d, cid=0x%x, in_recovery=%d, lun_reset=%d\n",1163 qedi_conn->active_cmd_count, qedi_conn->iscsi_conn_id,1164 in_recovery, lun_reset);1165 1166 if (lun_reset)1167 spin_lock_bh(&session->back_lock);1168 1169 spin_lock(&qedi_conn->list_lock);1170 1171 list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list,1172 io_cmd) {1173 ctask = cmd->task;1174 if (ctask == task)1175 continue;1176 1177 if (lun_reset) {1178 if (cmd->scsi_cmd && cmd->scsi_cmd->device) {1179 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,1180 "tid=0x%x itt=0x%x scsi_cmd_ptr=%p device=%p task_state=%d cmd_state=0%x cid=0x%x\n",1181 cmd->task_id, get_itt(ctask->itt),1182 cmd->scsi_cmd, cmd->scsi_cmd->device,1183 ctask->state, cmd->state,1184 qedi_conn->iscsi_conn_id);1185 if (cmd->scsi_cmd->device->lun != lun)1186 continue;1187 }1188 }1189 qedi_conn->cmd_cleanup_req++;1190 qedi_iscsi_cleanup_task(ctask, true);1191 1192 cmd->io_cmd_in_list = false;1193 list_del_init(&cmd->io_cmd);1194 qedi_conn->active_cmd_count--;1195 QEDI_WARN(&qedi->dbg_ctx,1196 "Deleted active cmd list node io_cmd=%p, cid=0x%x\n",1197 &cmd->io_cmd, qedi_conn->iscsi_conn_id);1198 }1199 1200 spin_unlock(&qedi_conn->list_lock);1201 1202 if (lun_reset)1203 spin_unlock_bh(&session->back_lock);1204 1205 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,1206 "cmd_cleanup_req=%d, cid=0x%x\n",1207 qedi_conn->cmd_cleanup_req,1208 qedi_conn->iscsi_conn_id);1209 1210 rval = wait_event_interruptible_timeout(qedi_conn->wait_queue,1211 (qedi_conn->cmd_cleanup_req ==1212 atomic_read(&qedi_conn->cmd_cleanup_cmpl)) ||1213 test_bit(QEDI_IN_RECOVERY, &qedi->flags),1214 5 * HZ);1215 if (rval) {1216 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,1217 "i/o cmd_cleanup_req=%d, equal to cmd_cleanup_cmpl=%d, cid=0x%x\n",1218 qedi_conn->cmd_cleanup_req,1219 atomic_read(&qedi_conn->cmd_cleanup_cmpl),1220 qedi_conn->iscsi_conn_id);1221 1222 return 0;1223 }1224 1225 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,1226 "i/o cmd_cleanup_req=%d, not equal to cmd_cleanup_cmpl=%d, cid=0x%x\n",1227 qedi_conn->cmd_cleanup_req,1228 atomic_read(&qedi_conn->cmd_cleanup_cmpl),1229 qedi_conn->iscsi_conn_id);1230 1231 iscsi_host_for_each_session(qedi->shost,1232 qedi_mark_device_missing);1233 qedi_ops->common->drain(qedi->cdev);1234 1235 /* Enable IOs for all other sessions except current.*/1236 if (!wait_event_interruptible_timeout(qedi_conn->wait_queue,1237 (qedi_conn->cmd_cleanup_req ==1238 atomic_read(&qedi_conn->cmd_cleanup_cmpl)) ||1239 test_bit(QEDI_IN_RECOVERY, &qedi->flags),1240 5 * HZ)) {1241 iscsi_host_for_each_session(qedi->shost,1242 qedi_mark_device_available);1243 return -1;1244 }1245 1246 iscsi_host_for_each_session(qedi->shost,1247 qedi_mark_device_available);1248 1249 return 0;1250}1251 1252void qedi_clearsq(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn,1253 struct iscsi_task *task)1254{1255 struct qedi_endpoint *qedi_ep;1256 int rval;1257 1258 qedi_ep = qedi_conn->ep;1259 qedi_conn->cmd_cleanup_req = 0;1260 atomic_set(&qedi_conn->cmd_cleanup_cmpl, 0);1261 1262 if (!qedi_ep) {1263 QEDI_WARN(&qedi->dbg_ctx,1264 "Cannot proceed, ep already disconnected, cid=0x%x\n",1265 qedi_conn->iscsi_conn_id);1266 return;1267 }1268 1269 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,1270 "Clearing SQ for cid=0x%x, conn=%p, ep=%p\n",1271 qedi_conn->iscsi_conn_id, qedi_conn, qedi_ep);1272 1273 qedi_ops->clear_sq(qedi->cdev, qedi_ep->handle);1274 1275 rval = qedi_cleanup_all_io(qedi, qedi_conn, task, true);1276 if (rval) {1277 QEDI_ERR(&qedi->dbg_ctx,1278 "fatal error, need hard reset, cid=0x%x\n",1279 qedi_conn->iscsi_conn_id);1280 WARN_ON(1);1281 }1282}1283 1284static int qedi_wait_for_cleanup_request(struct qedi_ctx *qedi,1285 struct qedi_conn *qedi_conn,1286 struct iscsi_task *task,1287 struct qedi_cmd *qedi_cmd,1288 struct qedi_work_map *list_work)1289{1290 struct qedi_cmd *cmd = (struct qedi_cmd *)task->dd_data;1291 int wait;1292 1293 wait = wait_event_interruptible_timeout(qedi_conn->wait_queue,1294 ((qedi_cmd->state ==1295 CLEANUP_RECV) ||1296 ((qedi_cmd->type == TYPEIO) &&1297 (cmd->state ==1298 RESPONSE_RECEIVED))),1299 5 * HZ);1300 if (!wait) {1301 qedi_cmd->state = CLEANUP_WAIT_FAILED;1302 1303 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,1304 "Cleanup timedout tid=0x%x, issue connection recovery, cid=0x%x\n",1305 cmd->task_id, qedi_conn->iscsi_conn_id);1306 1307 return -1;1308 }1309 return 0;1310}1311 1312static void qedi_abort_work(struct work_struct *work)1313{1314 struct qedi_cmd *qedi_cmd =1315 container_of(work, struct qedi_cmd, tmf_work);1316 struct qedi_conn *qedi_conn = qedi_cmd->conn;1317 struct qedi_ctx *qedi = qedi_conn->qedi;1318 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data;1319 struct qedi_work_map *list_work = NULL;1320 struct iscsi_task *mtask;1321 struct qedi_cmd *cmd;1322 struct iscsi_task *ctask;1323 struct iscsi_tm *tmf_hdr;1324 s16 rval = 0;1325 1326 mtask = qedi_cmd->task;1327 tmf_hdr = (struct iscsi_tm *)mtask->hdr;1328 1329 spin_lock_bh(&conn->session->back_lock);1330 ctask = iscsi_itt_to_ctask(conn, tmf_hdr->rtt);1331 if (!ctask) {1332 spin_unlock_bh(&conn->session->back_lock);1333 QEDI_ERR(&qedi->dbg_ctx, "Invalid RTT. Letting abort timeout.\n");1334 goto clear_cleanup;1335 }1336 1337 if (iscsi_task_is_completed(ctask)) {1338 spin_unlock_bh(&conn->session->back_lock);1339 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,1340 "Task already completed\n");1341 /*1342 * We have to still send the TMF because libiscsi needs the1343 * response to avoid a timeout.1344 */1345 goto send_tmf;1346 }1347 spin_unlock_bh(&conn->session->back_lock);1348 1349 cmd = (struct qedi_cmd *)ctask->dd_data;1350 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,1351 "Abort tmf rtt=0x%x, cmd itt=0x%x, cmd tid=0x%x, cid=0x%x\n",1352 get_itt(tmf_hdr->rtt), get_itt(ctask->itt), cmd->task_id,1353 qedi_conn->iscsi_conn_id);1354 1355 if (qedi_do_not_recover) {1356 QEDI_ERR(&qedi->dbg_ctx, "DONT SEND CLEANUP/ABORT %d\n",1357 qedi_do_not_recover);1358 goto clear_cleanup;1359 }1360 1361 list_work = kzalloc(sizeof(*list_work), GFP_NOIO);1362 if (!list_work) {1363 QEDI_ERR(&qedi->dbg_ctx, "Memory allocation failed\n");1364 goto clear_cleanup;1365 }1366 1367 qedi_cmd->type = TYPEIO;1368 qedi_cmd->state = CLEANUP_WAIT;1369 list_work->qedi_cmd = qedi_cmd;1370 list_work->rtid = cmd->task_id;1371 list_work->state = QEDI_WORK_SCHEDULED;1372 list_work->ctask = ctask;1373 qedi_cmd->list_tmf_work = list_work;1374 1375 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM,1376 "Queue tmf work=%p, list node=%p, cid=0x%x, tmf flags=0x%x\n",1377 list_work->ptr_tmf_work, list_work, qedi_conn->iscsi_conn_id,1378 tmf_hdr->flags);1379 1380 spin_lock_bh(&qedi_conn->tmf_work_lock);1381 list_add_tail(&list_work->list, &qedi_conn->tmf_work_list);1382 spin_unlock_bh(&qedi_conn->tmf_work_lock);1383 1384 qedi_iscsi_cleanup_task(ctask, false);1385 1386 rval = qedi_wait_for_cleanup_request(qedi, qedi_conn, ctask, qedi_cmd,1387 list_work);1388 if (rval == -1) {1389 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,1390 "FW cleanup got escalated, cid=0x%x\n",1391 qedi_conn->iscsi_conn_id);1392 goto ldel_exit;1393 }1394 1395send_tmf:1396 send_iscsi_tmf(qedi_conn, qedi_cmd->task, ctask);1397 goto clear_cleanup;1398 1399ldel_exit:1400 spin_lock_bh(&qedi_conn->tmf_work_lock);1401 if (qedi_cmd->list_tmf_work) {1402 list_del_init(&list_work->list);1403 qedi_cmd->list_tmf_work = NULL;1404 kfree(list_work);1405 }1406 spin_unlock_bh(&qedi_conn->tmf_work_lock);1407 1408 spin_lock(&qedi_conn->list_lock);1409 if (likely(cmd->io_cmd_in_list)) {1410 cmd->io_cmd_in_list = false;1411 list_del_init(&cmd->io_cmd);1412 qedi_conn->active_cmd_count--;1413 }1414 spin_unlock(&qedi_conn->list_lock);1415 1416clear_cleanup:1417 spin_lock(&qedi_conn->tmf_work_lock);1418 qedi_conn->fw_cleanup_works--;1419 spin_unlock(&qedi_conn->tmf_work_lock);1420}1421 1422static int send_iscsi_tmf(struct qedi_conn *qedi_conn, struct iscsi_task *mtask,1423 struct iscsi_task *ctask)1424{1425 struct iscsi_tmf_request_hdr tmf_pdu_header;1426 struct iscsi_task_params task_params;1427 struct qedi_ctx *qedi = qedi_conn->qedi;1428 struct iscsi_task_context *fw_task_ctx;1429 struct iscsi_tm *tmf_hdr;1430 struct qedi_cmd *qedi_cmd;1431 struct qedi_cmd *cmd;1432 struct qedi_endpoint *ep;1433 u32 scsi_lun[2];1434 s16 tid = 0;1435 u16 sq_idx = 0;1436 1437 tmf_hdr = (struct iscsi_tm *)mtask->hdr;1438 qedi_cmd = (struct qedi_cmd *)mtask->dd_data;1439 ep = qedi_conn->ep;1440 if (!ep)1441 return -ENODEV;1442 1443 tid = qedi_get_task_idx(qedi);1444 if (tid == -1)1445 return -ENOMEM;1446 1447 fw_task_ctx =1448 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,1449 tid);1450 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context));1451 1452 qedi_cmd->task_id = tid;1453 1454 memset(&task_params, 0, sizeof(task_params));1455 memset(&tmf_pdu_header, 0, sizeof(tmf_pdu_header));1456 1457 /* Update header info */1458 qedi_update_itt_map(qedi, tid, mtask->itt, qedi_cmd);1459 tmf_pdu_header.itt = qedi_set_itt(tid, get_itt(mtask->itt));1460 tmf_pdu_header.cmd_sn = be32_to_cpu(tmf_hdr->cmdsn);1461 1462 memcpy(scsi_lun, &tmf_hdr->lun, sizeof(struct scsi_lun));1463 tmf_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]);1464 tmf_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]);1465 1466 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==1467 ISCSI_TM_FUNC_ABORT_TASK) {1468 cmd = (struct qedi_cmd *)ctask->dd_data;1469 tmf_pdu_header.rtt =1470 qedi_set_itt(cmd->task_id,1471 get_itt(tmf_hdr->rtt));1472 } else {1473 tmf_pdu_header.rtt = ISCSI_RESERVED_TAG;1474 }1475 1476 tmf_pdu_header.opcode = tmf_hdr->opcode;1477 tmf_pdu_header.function = tmf_hdr->flags;1478 tmf_pdu_header.hdr_second_dword = ntoh24(tmf_hdr->dlength);1479 tmf_pdu_header.ref_cmd_sn = be32_to_cpu(tmf_hdr->refcmdsn);1480 1481 /* Fill fw input params */1482 task_params.context = fw_task_ctx;1483 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;1484 task_params.itid = tid;1485 task_params.cq_rss_number = 0;1486 task_params.tx_io_size = 0;1487 task_params.rx_io_size = 0;1488 1489 sq_idx = qedi_get_wqe_idx(qedi_conn);1490 task_params.sqe = &ep->sq[sq_idx];1491 1492 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));1493 init_initiator_tmf_request_task(&task_params, &tmf_pdu_header);1494 1495 spin_lock(&qedi_conn->list_lock);1496 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);1497 qedi_cmd->io_cmd_in_list = true;1498 qedi_conn->active_cmd_count++;1499 spin_unlock(&qedi_conn->list_lock);1500 1501 qedi_ring_doorbell(qedi_conn);1502 return 0;1503}1504 1505int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn, struct iscsi_task *mtask)1506{1507 struct iscsi_tm *tmf_hdr = (struct iscsi_tm *)mtask->hdr;1508 struct qedi_cmd *qedi_cmd = mtask->dd_data;1509 struct qedi_ctx *qedi = qedi_conn->qedi;1510 int rc = 0;1511 1512 switch (tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) {1513 case ISCSI_TM_FUNC_ABORT_TASK:1514 spin_lock(&qedi_conn->tmf_work_lock);1515 qedi_conn->fw_cleanup_works++;1516 spin_unlock(&qedi_conn->tmf_work_lock);1517 1518 INIT_WORK(&qedi_cmd->tmf_work, qedi_abort_work);1519 queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work);1520 break;1521 case ISCSI_TM_FUNC_LOGICAL_UNIT_RESET:1522 case ISCSI_TM_FUNC_TARGET_WARM_RESET:1523 case ISCSI_TM_FUNC_TARGET_COLD_RESET:1524 rc = send_iscsi_tmf(qedi_conn, mtask, NULL);1525 break;1526 default:1527 QEDI_ERR(&qedi->dbg_ctx, "Invalid tmf, cid=0x%x\n",1528 qedi_conn->iscsi_conn_id);1529 return -EINVAL;1530 }1531 1532 return rc;1533}1534 1535int qedi_send_iscsi_text(struct qedi_conn *qedi_conn,1536 struct iscsi_task *task)1537{1538 struct iscsi_text_request_hdr text_request_pdu_header;1539 struct scsi_sgl_task_params tx_sgl_task_params;1540 struct scsi_sgl_task_params rx_sgl_task_params;1541 struct iscsi_task_params task_params;1542 struct iscsi_task_context *fw_task_ctx;1543 struct qedi_ctx *qedi = qedi_conn->qedi;1544 struct iscsi_text *text_hdr;1545 struct scsi_sge *req_sge = NULL;1546 struct scsi_sge *resp_sge = NULL;1547 struct qedi_cmd *qedi_cmd;1548 struct qedi_endpoint *ep;1549 s16 tid = 0;1550 u16 sq_idx = 0;1551 int rval = 0;1552 1553 req_sge = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;1554 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;1555 qedi_cmd = (struct qedi_cmd *)task->dd_data;1556 text_hdr = (struct iscsi_text *)task->hdr;1557 ep = qedi_conn->ep;1558 1559 tid = qedi_get_task_idx(qedi);1560 if (tid == -1)1561 return -ENOMEM;1562 1563 fw_task_ctx =1564 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,1565 tid);1566 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context));1567 1568 qedi_cmd->task_id = tid;1569 1570 memset(&task_params, 0, sizeof(task_params));1571 memset(&text_request_pdu_header, 0, sizeof(text_request_pdu_header));1572 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));1573 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));1574 1575 /* Update header info */1576 text_request_pdu_header.opcode = text_hdr->opcode;1577 text_request_pdu_header.flags_attr = text_hdr->flags;1578 1579 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);1580 text_request_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));1581 text_request_pdu_header.ttt = text_hdr->ttt;1582 text_request_pdu_header.cmd_sn = be32_to_cpu(text_hdr->cmdsn);1583 text_request_pdu_header.exp_stat_sn = be32_to_cpu(text_hdr->exp_statsn);1584 text_request_pdu_header.hdr_second_dword = ntoh24(text_hdr->dlength);1585 1586 /* Fill tx AHS and rx buffer */1587 tx_sgl_task_params.sgl =1588 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;1589 tx_sgl_task_params.sgl_phys_addr.lo =1590 (u32)(qedi_conn->gen_pdu.req_dma_addr);1591 tx_sgl_task_params.sgl_phys_addr.hi =1592 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);1593 tx_sgl_task_params.total_buffer_size = req_sge->sge_len;1594 tx_sgl_task_params.num_sges = 1;1595 1596 rx_sgl_task_params.sgl =1597 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;1598 rx_sgl_task_params.sgl_phys_addr.lo =1599 (u32)(qedi_conn->gen_pdu.resp_dma_addr);1600 rx_sgl_task_params.sgl_phys_addr.hi =1601 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);1602 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len;1603 rx_sgl_task_params.num_sges = 1;1604 1605 /* Fill fw input params */1606 task_params.context = fw_task_ctx;1607 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;1608 task_params.itid = tid;1609 task_params.cq_rss_number = 0;1610 task_params.tx_io_size = ntoh24(text_hdr->dlength);1611 task_params.rx_io_size = resp_sge->sge_len;1612 1613 sq_idx = qedi_get_wqe_idx(qedi_conn);1614 task_params.sqe = &ep->sq[sq_idx];1615 1616 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));1617 rval = init_initiator_text_request_task(&task_params,1618 &text_request_pdu_header,1619 &tx_sgl_task_params,1620 &rx_sgl_task_params);1621 if (rval)1622 return -1;1623 1624 spin_lock(&qedi_conn->list_lock);1625 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);1626 qedi_cmd->io_cmd_in_list = true;1627 qedi_conn->active_cmd_count++;1628 spin_unlock(&qedi_conn->list_lock);1629 1630 qedi_ring_doorbell(qedi_conn);1631 return 0;1632}1633 1634int qedi_send_iscsi_nopout(struct qedi_conn *qedi_conn,1635 struct iscsi_task *task,1636 char *datap, int data_len, int unsol)1637{1638 struct iscsi_nop_out_hdr nop_out_pdu_header;1639 struct scsi_sgl_task_params tx_sgl_task_params;1640 struct scsi_sgl_task_params rx_sgl_task_params;1641 struct iscsi_task_params task_params;1642 struct qedi_ctx *qedi = qedi_conn->qedi;1643 struct iscsi_task_context *fw_task_ctx;1644 struct iscsi_nopout *nopout_hdr;1645 struct scsi_sge *resp_sge = NULL;1646 struct qedi_cmd *qedi_cmd;1647 struct qedi_endpoint *ep;1648 u32 scsi_lun[2];1649 s16 tid = 0;1650 u16 sq_idx = 0;1651 int rval = 0;1652 1653 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;1654 qedi_cmd = (struct qedi_cmd *)task->dd_data;1655 nopout_hdr = (struct iscsi_nopout *)task->hdr;1656 ep = qedi_conn->ep;1657 1658 tid = qedi_get_task_idx(qedi);1659 if (tid == -1)1660 return -ENOMEM;1661 1662 fw_task_ctx =1663 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,1664 tid);1665 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context));1666 1667 qedi_cmd->task_id = tid;1668 1669 memset(&task_params, 0, sizeof(task_params));1670 memset(&nop_out_pdu_header, 0, sizeof(nop_out_pdu_header));1671 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));1672 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));1673 1674 /* Update header info */1675 nop_out_pdu_header.opcode = nopout_hdr->opcode;1676 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_CONST1, 1);1677 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_RSRV, 0);1678 1679 memcpy(scsi_lun, &nopout_hdr->lun, sizeof(struct scsi_lun));1680 nop_out_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]);1681 nop_out_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]);1682 nop_out_pdu_header.cmd_sn = be32_to_cpu(nopout_hdr->cmdsn);1683 nop_out_pdu_header.exp_stat_sn = be32_to_cpu(nopout_hdr->exp_statsn);1684 1685 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd);1686 1687 if (nopout_hdr->ttt != ISCSI_TTT_ALL_ONES) {1688 nop_out_pdu_header.itt = be32_to_cpu(nopout_hdr->itt);1689 nop_out_pdu_header.ttt = be32_to_cpu(nopout_hdr->ttt);1690 } else {1691 nop_out_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));1692 nop_out_pdu_header.ttt = ISCSI_TTT_ALL_ONES;1693 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);1699 }1700 1701 /* Fill tx AHS and rx buffer */1702 if (data_len) {1703 tx_sgl_task_params.sgl =1704 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;1705 tx_sgl_task_params.sgl_phys_addr.lo =1706 (u32)(qedi_conn->gen_pdu.req_dma_addr);1707 tx_sgl_task_params.sgl_phys_addr.hi =1708 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);1709 tx_sgl_task_params.total_buffer_size = data_len;1710 tx_sgl_task_params.num_sges = 1;1711 1712 rx_sgl_task_params.sgl =1713 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;1714 rx_sgl_task_params.sgl_phys_addr.lo =1715 (u32)(qedi_conn->gen_pdu.resp_dma_addr);1716 rx_sgl_task_params.sgl_phys_addr.hi =1717 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);1718 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len;1719 rx_sgl_task_params.num_sges = 1;1720 }1721 1722 /* Fill fw input params */1723 task_params.context = fw_task_ctx;1724 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;1725 task_params.itid = tid;1726 task_params.cq_rss_number = 0;1727 task_params.tx_io_size = data_len;1728 task_params.rx_io_size = resp_sge->sge_len;1729 1730 sq_idx = qedi_get_wqe_idx(qedi_conn);1731 task_params.sqe = &ep->sq[sq_idx];1732 1733 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));1734 rval = init_initiator_nop_out_task(&task_params,1735 &nop_out_pdu_header,1736 &tx_sgl_task_params,1737 &rx_sgl_task_params);1738 if (rval)1739 return -1;1740 1741 qedi_ring_doorbell(qedi_conn);1742 return 0;1743}1744 1745static int qedi_split_bd(struct qedi_cmd *cmd, u64 addr, int sg_len,1746 int bd_index)1747{1748 struct scsi_sge *bd = cmd->io_tbl.sge_tbl;1749 int frag_size, sg_frags;1750 1751 sg_frags = 0;1752 1753 while (sg_len) {1754 if (addr % QEDI_PAGE_SIZE)1755 frag_size =1756 (QEDI_PAGE_SIZE - (addr % QEDI_PAGE_SIZE));1757 else1758 frag_size = (sg_len > QEDI_BD_SPLIT_SZ) ? 0 :1759 (sg_len % QEDI_BD_SPLIT_SZ);1760 1761 if (frag_size == 0)1762 frag_size = QEDI_BD_SPLIT_SZ;1763 1764 bd[bd_index + sg_frags].sge_addr.lo = (addr & 0xffffffff);1765 bd[bd_index + sg_frags].sge_addr.hi = (addr >> 32);1766 bd[bd_index + sg_frags].sge_len = (u16)frag_size;1767 QEDI_INFO(&cmd->conn->qedi->dbg_ctx, QEDI_LOG_IO,1768 "split sge %d: addr=%llx, len=%x",1769 (bd_index + sg_frags), addr, frag_size);1770 1771 addr += (u64)frag_size;1772 sg_frags++;1773 sg_len -= frag_size;1774 }1775 return sg_frags;1776}1777 1778static int qedi_map_scsi_sg(struct qedi_ctx *qedi, struct qedi_cmd *cmd)1779{1780 struct scsi_cmnd *sc = cmd->scsi_cmd;1781 struct scsi_sge *bd = cmd->io_tbl.sge_tbl;1782 struct scatterlist *sg;1783 int byte_count = 0;1784 int bd_count = 0;1785 int sg_count;1786 int sg_len;1787 int sg_frags;1788 u64 addr, end_addr;1789 int i;1790 1791 WARN_ON(scsi_sg_count(sc) > QEDI_ISCSI_MAX_BDS_PER_CMD);1792 1793 sg_count = dma_map_sg(&qedi->pdev->dev, scsi_sglist(sc),1794 scsi_sg_count(sc), sc->sc_data_direction);1795 1796 /*1797 * New condition to send single SGE as cached-SGL.1798 * Single SGE with length less than 64K.1799 */1800 sg = scsi_sglist(sc);1801 if ((sg_count == 1) && (sg_dma_len(sg) <= MAX_SGLEN_FOR_CACHESGL)) {1802 sg_len = sg_dma_len(sg);1803 addr = (u64)sg_dma_address(sg);1804 1805 bd[bd_count].sge_addr.lo = (addr & 0xffffffff);1806 bd[bd_count].sge_addr.hi = (addr >> 32);1807 bd[bd_count].sge_len = (u16)sg_len;1808 1809 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,1810 "single-cached-sgl: bd_count:%d addr=%llx, len=%x",1811 sg_count, addr, sg_len);1812 1813 return ++bd_count;1814 }1815 1816 scsi_for_each_sg(sc, sg, sg_count, i) {1817 sg_len = sg_dma_len(sg);1818 addr = (u64)sg_dma_address(sg);1819 end_addr = (addr + sg_len);1820 1821 /*1822 * first sg elem in the 'list',1823 * check if end addr is page-aligned.1824 */1825 if ((i == 0) && (sg_count > 1) && (end_addr % QEDI_PAGE_SIZE))1826 cmd->use_slowpath = true;1827 1828 /*1829 * last sg elem in the 'list',1830 * check if start addr is page-aligned.1831 */1832 else if ((i == (sg_count - 1)) &&1833 (sg_count > 1) && (addr % QEDI_PAGE_SIZE))1834 cmd->use_slowpath = true;1835 1836 /*1837 * middle sg elements in list,1838 * check if start and end addr is page-aligned1839 */1840 else if ((i != 0) && (i != (sg_count - 1)) &&1841 ((addr % QEDI_PAGE_SIZE) ||1842 (end_addr % QEDI_PAGE_SIZE)))1843 cmd->use_slowpath = true;1844 1845 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "sg[%d] size=0x%x",1846 i, sg_len);1847 1848 if (sg_len > QEDI_BD_SPLIT_SZ) {1849 sg_frags = qedi_split_bd(cmd, addr, sg_len, bd_count);1850 } else {1851 sg_frags = 1;1852 bd[bd_count].sge_addr.lo = addr & 0xffffffff;1853 bd[bd_count].sge_addr.hi = addr >> 32;1854 bd[bd_count].sge_len = sg_len;1855 }1856 byte_count += sg_len;1857 bd_count += sg_frags;1858 }1859 1860 if (byte_count != scsi_bufflen(sc))1861 QEDI_ERR(&qedi->dbg_ctx,1862 "byte_count = %d != scsi_bufflen = %d\n", byte_count,1863 scsi_bufflen(sc));1864 else1865 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "byte_count = %d\n",1866 byte_count);1867 1868 WARN_ON(byte_count != scsi_bufflen(sc));1869 1870 return bd_count;1871}1872 1873static void qedi_iscsi_map_sg_list(struct qedi_cmd *cmd)1874{1875 int bd_count;1876 struct scsi_cmnd *sc = cmd->scsi_cmd;1877 1878 if (scsi_sg_count(sc)) {1879 bd_count = qedi_map_scsi_sg(cmd->conn->qedi, cmd);1880 if (bd_count == 0)1881 return;1882 } else {1883 struct scsi_sge *bd = cmd->io_tbl.sge_tbl;1884 1885 bd[0].sge_addr.lo = 0;1886 bd[0].sge_addr.hi = 0;1887 bd[0].sge_len = 0;1888 bd_count = 0;1889 }1890 cmd->io_tbl.sge_valid = bd_count;1891}1892 1893static void qedi_cpy_scsi_cdb(struct scsi_cmnd *sc, u32 *dstp)1894{1895 u32 dword;1896 int lpcnt;1897 u8 *srcp;1898 1899 lpcnt = sc->cmd_len / sizeof(dword);1900 srcp = (u8 *)sc->cmnd;1901 while (lpcnt--) {1902 memcpy(&dword, (const void *)srcp, 4);1903 *dstp = cpu_to_be32(dword);1904 srcp += 4;1905 dstp++;1906 }1907 if (sc->cmd_len & 0x3) {1908 dword = (u32)srcp[0] | ((u32)srcp[1] << 8);1909 *dstp = cpu_to_be32(dword);1910 }1911}1912 1913void qedi_trace_io(struct qedi_ctx *qedi, struct iscsi_task *task,1914 u16 tid, int8_t direction)1915{1916 struct qedi_io_log *io_log;1917 struct iscsi_conn *conn = task->conn;1918 struct qedi_conn *qedi_conn = conn->dd_data;1919 struct scsi_cmnd *sc_cmd = task->sc;1920 unsigned long flags;1921 1922 spin_lock_irqsave(&qedi->io_trace_lock, flags);1923 1924 io_log = &qedi->io_trace_buf[qedi->io_trace_idx];1925 io_log->direction = direction;1926 io_log->task_id = tid;1927 io_log->cid = qedi_conn->iscsi_conn_id;1928 io_log->lun = sc_cmd->device->lun;1929 io_log->op = sc_cmd->cmnd[0];1930 io_log->lba[0] = sc_cmd->cmnd[2];1931 io_log->lba[1] = sc_cmd->cmnd[3];1932 io_log->lba[2] = sc_cmd->cmnd[4];1933 io_log->lba[3] = sc_cmd->cmnd[5];1934 io_log->bufflen = scsi_bufflen(sc_cmd);1935 io_log->sg_count = scsi_sg_count(sc_cmd);1936 io_log->fast_sgs = qedi->fast_sgls;1937 io_log->cached_sgs = qedi->cached_sgls;1938 io_log->slow_sgs = qedi->slow_sgls;1939 io_log->cached_sge = qedi->use_cached_sge;1940 io_log->slow_sge = qedi->use_slow_sge;1941 io_log->fast_sge = qedi->use_fast_sge;1942 io_log->result = sc_cmd->result;1943 io_log->jiffies = jiffies;1944 io_log->blk_req_cpu = smp_processor_id();1945 1946 if (direction == QEDI_IO_TRACE_REQ) {1947 /* For requests we only care about the submission CPU */1948 io_log->req_cpu = smp_processor_id() % qedi->num_queues;1949 io_log->intr_cpu = 0;1950 io_log->blk_rsp_cpu = 0;1951 } else if (direction == QEDI_IO_TRACE_RSP) {1952 io_log->req_cpu = smp_processor_id() % qedi->num_queues;1953 io_log->intr_cpu = qedi->intr_cpu;1954 io_log->blk_rsp_cpu = smp_processor_id();1955 }1956 1957 qedi->io_trace_idx++;1958 if (qedi->io_trace_idx == QEDI_IO_TRACE_SIZE)1959 qedi->io_trace_idx = 0;1960 1961 qedi->use_cached_sge = false;1962 qedi->use_slow_sge = false;1963 qedi->use_fast_sge = false;1964 1965 spin_unlock_irqrestore(&qedi->io_trace_lock, flags);1966}1967 1968int qedi_iscsi_send_ioreq(struct iscsi_task *task)1969{1970 struct iscsi_conn *conn = task->conn;1971 struct iscsi_session *session = conn->session;1972 struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session);1973 struct qedi_ctx *qedi = iscsi_host_priv(shost);1974 struct qedi_conn *qedi_conn = conn->dd_data;1975 struct qedi_cmd *cmd = task->dd_data;1976 struct scsi_cmnd *sc = task->sc;1977 struct iscsi_cmd_hdr cmd_pdu_header;1978 struct scsi_sgl_task_params tx_sgl_task_params;1979 struct scsi_sgl_task_params rx_sgl_task_params;1980 struct scsi_sgl_task_params *prx_sgl = NULL;1981 struct scsi_sgl_task_params *ptx_sgl = NULL;1982 struct iscsi_task_params task_params;1983 struct iscsi_conn_params conn_params;1984 struct scsi_initiator_cmd_params cmd_params;1985 struct iscsi_task_context *fw_task_ctx;1986 struct iscsi_cls_conn *cls_conn;1987 struct iscsi_scsi_req *hdr = (struct iscsi_scsi_req *)task->hdr;1988 enum iscsi_task_type task_type = MAX_ISCSI_TASK_TYPE;1989 struct qedi_endpoint *ep;1990 u32 scsi_lun[2];1991 s16 tid = 0;1992 u16 sq_idx = 0;1993 u16 cq_idx;1994 int rval = 0;1995 1996 ep = qedi_conn->ep;1997 cls_conn = qedi_conn->cls_conn;1998 conn = cls_conn->dd_data;1999 2000 qedi_iscsi_map_sg_list(cmd);2001 int_to_scsilun(sc->device->lun, (struct scsi_lun *)scsi_lun);2002 2003 tid = qedi_get_task_idx(qedi);2004 if (tid == -1)2005 return -ENOMEM;2006 2007 fw_task_ctx =2008 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks,2009 tid);2010 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context));2011 2012 cmd->task_id = tid;2013 2014 memset(&task_params, 0, sizeof(task_params));2015 memset(&cmd_pdu_header, 0, sizeof(cmd_pdu_header));2016 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params));2017 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params));2018 memset(&conn_params, 0, sizeof(conn_params));2019 memset(&cmd_params, 0, sizeof(cmd_params));2020 2021 cq_idx = smp_processor_id() % qedi->num_queues;2022 /* Update header info */2023 SET_FIELD(cmd_pdu_header.flags_attr, ISCSI_CMD_HDR_ATTR,2024 ISCSI_ATTR_SIMPLE);2025 if (hdr->cdb[0] != TEST_UNIT_READY) {2026 if (sc->sc_data_direction == DMA_TO_DEVICE) {2027 SET_FIELD(cmd_pdu_header.flags_attr,2028 ISCSI_CMD_HDR_WRITE, 1);2029 task_type = ISCSI_TASK_TYPE_INITIATOR_WRITE;2030 } else {2031 SET_FIELD(cmd_pdu_header.flags_attr,2032 ISCSI_CMD_HDR_READ, 1);2033 task_type = ISCSI_TASK_TYPE_INITIATOR_READ;2034 }2035 }2036 2037 cmd_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]);2038 cmd_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]);2039 2040 qedi_update_itt_map(qedi, tid, task->itt, cmd);2041 cmd_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt));2042 cmd_pdu_header.expected_transfer_length = cpu_to_be32(hdr->data_length);2043 cmd_pdu_header.hdr_second_dword = ntoh24(hdr->dlength);2044 cmd_pdu_header.cmd_sn = be32_to_cpu(hdr->cmdsn);2045 cmd_pdu_header.hdr_first_byte = hdr->opcode;2046 qedi_cpy_scsi_cdb(sc, (u32 *)cmd_pdu_header.cdb);2047 2048 /* Fill tx AHS and rx buffer */2049 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) {2050 tx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl;2051 tx_sgl_task_params.sgl_phys_addr.lo =2052 (u32)(cmd->io_tbl.sge_tbl_dma);2053 tx_sgl_task_params.sgl_phys_addr.hi =2054 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32);2055 tx_sgl_task_params.total_buffer_size = scsi_bufflen(sc);2056 tx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid;2057 if (cmd->use_slowpath)2058 tx_sgl_task_params.small_mid_sge = true;2059 } else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) {2060 rx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl;2061 rx_sgl_task_params.sgl_phys_addr.lo =2062 (u32)(cmd->io_tbl.sge_tbl_dma);2063 rx_sgl_task_params.sgl_phys_addr.hi =2064 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32);2065 rx_sgl_task_params.total_buffer_size = scsi_bufflen(sc);2066 rx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid;2067 }2068 2069 /* Add conn param */2070 conn_params.first_burst_length = conn->session->first_burst;2071 conn_params.max_send_pdu_length = conn->max_xmit_dlength;2072 conn_params.max_burst_length = conn->session->max_burst;2073 if (conn->session->initial_r2t_en)2074 conn_params.initial_r2t = true;2075 if (conn->session->imm_data_en)2076 conn_params.immediate_data = true;2077 2078 /* Add cmd params */2079 cmd_params.sense_data_buffer_phys_addr.lo = (u32)cmd->sense_buffer_dma;2080 cmd_params.sense_data_buffer_phys_addr.hi =2081 (u32)((u64)cmd->sense_buffer_dma >> 32);2082 /* Fill fw input params */2083 task_params.context = fw_task_ctx;2084 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id;2085 task_params.itid = tid;2086 task_params.cq_rss_number = cq_idx;2087 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE)2088 task_params.tx_io_size = scsi_bufflen(sc);2089 else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ)2090 task_params.rx_io_size = scsi_bufflen(sc);2091 2092 sq_idx = qedi_get_wqe_idx(qedi_conn);2093 task_params.sqe = &ep->sq[sq_idx];2094 2095 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,2096 "%s: %s-SGL: sg_len=0x%x num_sges=0x%x first-sge-lo=0x%x first-sge-hi=0x%x\n",2097 (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) ?2098 "Write " : "Read ", (cmd->io_tbl.sge_valid == 1) ?2099 "Single" : (cmd->use_slowpath ? "SLOW" : "FAST"),2100 (u16)cmd->io_tbl.sge_valid, scsi_bufflen(sc),2101 (u32)(cmd->io_tbl.sge_tbl_dma),2102 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32));2103 2104 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));2105 2106 if (task_params.tx_io_size != 0)2107 ptx_sgl = &tx_sgl_task_params;2108 if (task_params.rx_io_size != 0)2109 prx_sgl = &rx_sgl_task_params;2110 2111 rval = init_initiator_rw_iscsi_task(&task_params, &conn_params,2112 &cmd_params, &cmd_pdu_header,2113 ptx_sgl, prx_sgl,2114 NULL);2115 if (rval)2116 return -1;2117 2118 spin_lock(&qedi_conn->list_lock);2119 list_add_tail(&cmd->io_cmd, &qedi_conn->active_cmd_list);2120 cmd->io_cmd_in_list = true;2121 qedi_conn->active_cmd_count++;2122 spin_unlock(&qedi_conn->list_lock);2123 2124 qedi_ring_doorbell(qedi_conn);2125 return 0;2126}2127 2128int qedi_iscsi_cleanup_task(struct iscsi_task *task, bool mark_cmd_node_deleted)2129{2130 struct iscsi_task_params task_params;2131 struct qedi_endpoint *ep;2132 struct iscsi_conn *conn = task->conn;2133 struct qedi_conn *qedi_conn = conn->dd_data;2134 struct qedi_cmd *cmd = task->dd_data;2135 u16 sq_idx = 0;2136 int rval = 0;2137 2138 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_SCSI_TM,2139 "issue cleanup tid=0x%x itt=0x%x task_state=%d cmd_state=0%x cid=0x%x\n",2140 cmd->task_id, get_itt(task->itt), task->state,2141 cmd->state, qedi_conn->iscsi_conn_id);2142 2143 memset(&task_params, 0, sizeof(task_params));2144 ep = qedi_conn->ep;2145 2146 sq_idx = qedi_get_wqe_idx(qedi_conn);2147 2148 task_params.sqe = &ep->sq[sq_idx];2149 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));2150 task_params.itid = cmd->task_id;2151 2152 rval = init_cleanup_task(&task_params);2153 if (rval)2154 return rval;2155 2156 qedi_ring_doorbell(qedi_conn);2157 return 0;2158}2159