1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * QLogic iSCSI Offload Driver 4 * 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 17 static int send_iscsi_tmf(struct qedi_conn *qedi_conn, 18 struct iscsi_task *mtask, struct iscsi_task *ctask); 19 20 void 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 30 static 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 81 static 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 } 147 148 static 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); 168 169 exit_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 } 176 177 static 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); 252 253 unblock_sess: 254 spin_unlock(&session->back_lock); 255 } 256 257 static 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 } 318 319 static 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 } 357 358 static 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 } 395 396 static 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 } 407 408 static 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 } 471 472 done: 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 } 478 479 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, 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 } 532 533 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, 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 } 574 575 static void qedi_scsi_completion(struct qedi_ctx *qedi, 576 union iscsi_cqe *cqe, 577 struct iscsi_task *task, 578 struct iscsi_conn *conn) 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 (!sc_cmd->SCp.ptr) { 607 QEDI_WARN(&qedi->dbg_ctx, 608 "SCp.ptr is NULL, 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 transfer 638 * length, set Underrun flag and clear Overrun flag explicitly 639 */ 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); 669 error: 670 spin_unlock_bh(&session->back_lock); 671 } 672 673 static 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 } 708 709 static 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 } 728 729 static 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 } 774 775 if (!found) { 776 spin_unlock_bh(&qedi_conn->tmf_work_lock); 777 goto check_cleanup_reqs; 778 } 779 780 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 781 "TMF work, cqe->tid=0x%x, tmf flags=0x%x, cid=0x%x\n", 782 proto_itt, tmf_hdr->flags, qedi_conn->iscsi_conn_id); 783 784 spin_lock_bh(&conn->session->back_lock); 785 if (iscsi_task_is_completed(task)) { 786 QEDI_NOTICE(&qedi->dbg_ctx, 787 "IO task completed, tmf rtt=0x%x, cid=0x%x\n", 788 get_itt(tmf_hdr->rtt), qedi_conn->iscsi_conn_id); 789 goto unlock; 790 } 791 792 dbg_cmd = task->dd_data; 793 794 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 795 "Abort tmf rtt=0x%x, i/o itt=0x%x, i/o tid=0x%x, cid=0x%x\n", 796 get_itt(tmf_hdr->rtt), get_itt(task->itt), dbg_cmd->task_id, 797 qedi_conn->iscsi_conn_id); 798 799 spin_lock(&qedi_conn->list_lock); 800 if (likely(dbg_cmd->io_cmd_in_list)) { 801 dbg_cmd->io_cmd_in_list = false; 802 list_del_init(&dbg_cmd->io_cmd); 803 qedi_conn->active_cmd_count--; 804 } 805 spin_unlock(&qedi_conn->list_lock); 806 qedi_cmd->state = CLEANUP_RECV; 807 unlock: 808 spin_unlock_bh(&conn->session->back_lock); 809 spin_unlock_bh(&qedi_conn->tmf_work_lock); 810 wake_up_interruptible(&qedi_conn->wait_queue); 811 return; 812 813 check_cleanup_reqs: 814 if (atomic_inc_return(&qedi_conn->cmd_cleanup_cmpl) == 815 qedi_conn->cmd_cleanup_req) { 816 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 817 "Freeing tid=0x%x for cid=0x%x\n", 818 cqe->itid, qedi_conn->iscsi_conn_id); 819 wake_up(&qedi_conn->wait_queue); 820 } 821 } 822 823 void qedi_fp_process_cqes(struct qedi_work *work) 824 { 825 struct qedi_ctx *qedi = work->qedi; 826 union iscsi_cqe *cqe = &work->cqe; 827 struct iscsi_task *task = NULL; 828 struct iscsi_nopout *nopout_hdr; 829 struct qedi_conn *q_conn; 830 struct iscsi_conn *conn; 831 struct qedi_cmd *qedi_cmd; 832 u32 comp_type; 833 u32 iscsi_cid; 834 u32 hdr_opcode; 835 u16 que_idx = work->que_idx; 836 u8 cqe_err_bits = 0; 837 838 comp_type = cqe->cqe_common.cqe_type; 839 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte; 840 cqe_err_bits = 841 cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits; 842 843 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 844 "fw_cid=0x%x, cqe type=0x%x, opcode=0x%x\n", 845 cqe->cqe_common.conn_id, comp_type, hdr_opcode); 846 847 if (comp_type >= MAX_ISCSI_CQES_TYPE) { 848 QEDI_WARN(&qedi->dbg_ctx, "Invalid CqE type\n"); 849 return; 850 } 851 852 iscsi_cid = cqe->cqe_common.conn_id; 853 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; 854 if (!q_conn) { 855 QEDI_WARN(&qedi->dbg_ctx, 856 "Session no longer exists for cid=0x%x!!\n", 857 iscsi_cid); 858 return; 859 } 860 861 conn = q_conn->cls_conn->dd_data; 862 863 if (unlikely(cqe_err_bits && 864 GET_FIELD(cqe_err_bits, 865 CQE_ERROR_BITMAP_DATA_DIGEST_ERR))) { 866 iscsi_conn_failure(conn, ISCSI_ERR_DATA_DGST); 867 return; 868 } 869 870 switch (comp_type) { 871 case ISCSI_CQE_TYPE_SOLICITED: 872 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE: 873 qedi_cmd = container_of(work, struct qedi_cmd, cqe_work); 874 task = qedi_cmd->task; 875 if (!task) { 876 QEDI_WARN(&qedi->dbg_ctx, "task is NULL\n"); 877 return; 878 } 879 880 /* Process NOPIN local completion */ 881 nopout_hdr = (struct iscsi_nopout *)task->hdr; 882 if ((nopout_hdr->itt == RESERVED_ITT) && 883 (cqe->cqe_solicited.itid != (u16)RESERVED_ITT)) { 884 qedi_process_nopin_local_cmpl(qedi, &cqe->cqe_solicited, 885 task, q_conn); 886 } else { 887 cqe->cqe_solicited.itid = 888 qedi_get_itt(cqe->cqe_solicited); 889 /* Process other solicited responses */ 890 qedi_mtask_completion(qedi, cqe, task, q_conn, que_idx); 891 } 892 break; 893 case ISCSI_CQE_TYPE_UNSOLICITED: 894 switch (hdr_opcode) { 895 case ISCSI_OPCODE_NOP_IN: 896 qedi_process_nopin_mesg(qedi, cqe, task, q_conn, 897 que_idx); 898 break; 899 case ISCSI_OPCODE_ASYNC_MSG: 900 qedi_process_async_mesg(qedi, cqe, task, q_conn, 901 que_idx); 902 break; 903 case ISCSI_OPCODE_REJECT: 904 qedi_process_reject_mesg(qedi, cqe, task, q_conn, 905 que_idx); 906 break; 907 } 908 goto exit_fp_process; 909 case ISCSI_CQE_TYPE_DUMMY: 910 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "Dummy CqE\n"); 911 goto exit_fp_process; 912 case ISCSI_CQE_TYPE_TASK_CLEANUP: 913 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "CleanUp CqE\n"); 914 qedi_process_cmd_cleanup_resp(qedi, &cqe->cqe_solicited, conn); 915 goto exit_fp_process; 916 default: 917 QEDI_ERR(&qedi->dbg_ctx, "Error cqe.\n"); 918 break; 919 } 920 921 exit_fp_process: 922 return; 923 } 924 925 static void qedi_ring_doorbell(struct qedi_conn *qedi_conn) 926 { 927 qedi_conn->ep->db_data.sq_prod = qedi_conn->ep->fw_sq_prod_idx; 928 929 /* wmb - Make sure fw idx is coherent */ 930 wmb(); 931 writel(*(u32 *)&qedi_conn->ep->db_data, qedi_conn->ep->p_doorbell); 932 933 /* Make sure fw write idx is coherent, and include both memory barriers 934 * as a failsafe as for some architectures the call is the same but on 935 * others they are two different assembly operations. 936 */ 937 wmb(); 938 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_MP_REQ, 939 "prod_idx=0x%x, fw_prod_idx=0x%x, cid=0x%x\n", 940 qedi_conn->ep->sq_prod_idx, qedi_conn->ep->fw_sq_prod_idx, 941 qedi_conn->iscsi_conn_id); 942 } 943 944 static u16 qedi_get_wqe_idx(struct qedi_conn *qedi_conn) 945 { 946 struct qedi_endpoint *ep; 947 u16 rval; 948 949 ep = qedi_conn->ep; 950 rval = ep->sq_prod_idx; 951 952 /* Increament SQ index */ 953 ep->sq_prod_idx++; 954 ep->fw_sq_prod_idx++; 955 if (ep->sq_prod_idx == QEDI_SQ_SIZE) 956 ep->sq_prod_idx = 0; 957 958 return rval; 959 } 960 961 int qedi_send_iscsi_login(struct qedi_conn *qedi_conn, 962 struct iscsi_task *task) 963 { 964 struct iscsi_login_req_hdr login_req_pdu_header; 965 struct scsi_sgl_task_params tx_sgl_task_params; 966 struct scsi_sgl_task_params rx_sgl_task_params; 967 struct iscsi_task_params task_params; 968 struct iscsi_task_context *fw_task_ctx; 969 struct qedi_ctx *qedi = qedi_conn->qedi; 970 struct iscsi_login_req *login_hdr; 971 struct scsi_sge *resp_sge = NULL; 972 struct qedi_cmd *qedi_cmd; 973 struct qedi_endpoint *ep; 974 s16 tid = 0; 975 u16 sq_idx = 0; 976 int rval = 0; 977 978 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 979 qedi_cmd = (struct qedi_cmd *)task->dd_data; 980 ep = qedi_conn->ep; 981 login_hdr = (struct iscsi_login_req *)task->hdr; 982 983 tid = qedi_get_task_idx(qedi); 984 if (tid == -1) 985 return -ENOMEM; 986 987 fw_task_ctx = 988 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 989 tid); 990 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context)); 991 992 qedi_cmd->task_id = tid; 993 994 memset(&task_params, 0, sizeof(task_params)); 995 memset(&login_req_pdu_header, 0, sizeof(login_req_pdu_header)); 996 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 997 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 998 /* Update header info */ 999 login_req_pdu_header.opcode = login_hdr->opcode; 1000 login_req_pdu_header.version_min = login_hdr->min_version; 1001 login_req_pdu_header.version_max = login_hdr->max_version; 1002 login_req_pdu_header.flags_attr = login_hdr->flags; 1003 login_req_pdu_header.isid_tabc = swab32p((u32 *)login_hdr->isid); 1004 login_req_pdu_header.isid_d = swab16p((u16 *)&login_hdr->isid[4]); 1005 1006 login_req_pdu_header.tsih = login_hdr->tsih; 1007 login_req_pdu_header.hdr_second_dword = ntoh24(login_hdr->dlength); 1008 1009 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1010 login_req_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1011 login_req_pdu_header.cid = qedi_conn->iscsi_conn_id; 1012 login_req_pdu_header.cmd_sn = be32_to_cpu(login_hdr->cmdsn); 1013 login_req_pdu_header.exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn); 1014 login_req_pdu_header.exp_stat_sn = 0; 1015 1016 /* Fill tx AHS and rx buffer */ 1017 tx_sgl_task_params.sgl = 1018 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1019 tx_sgl_task_params.sgl_phys_addr.lo = 1020 (u32)(qedi_conn->gen_pdu.req_dma_addr); 1021 tx_sgl_task_params.sgl_phys_addr.hi = 1022 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); 1023 tx_sgl_task_params.total_buffer_size = ntoh24(login_hdr->dlength); 1024 tx_sgl_task_params.num_sges = 1; 1025 1026 rx_sgl_task_params.sgl = 1027 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1028 rx_sgl_task_params.sgl_phys_addr.lo = 1029 (u32)(qedi_conn->gen_pdu.resp_dma_addr); 1030 rx_sgl_task_params.sgl_phys_addr.hi = 1031 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); 1032 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; 1033 rx_sgl_task_params.num_sges = 1; 1034 1035 /* Fill fw input params */ 1036 task_params.context = fw_task_ctx; 1037 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1038 task_params.itid = tid; 1039 task_params.cq_rss_number = 0; 1040 task_params.tx_io_size = ntoh24(login_hdr->dlength); 1041 task_params.rx_io_size = resp_sge->sge_len; 1042 1043 sq_idx = qedi_get_wqe_idx(qedi_conn); 1044 task_params.sqe = &ep->sq[sq_idx]; 1045 1046 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1047 rval = init_initiator_login_request_task(&task_params, 1048 &login_req_pdu_header, 1049 &tx_sgl_task_params, 1050 &rx_sgl_task_params); 1051 if (rval) 1052 return -1; 1053 1054 spin_lock(&qedi_conn->list_lock); 1055 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1056 qedi_cmd->io_cmd_in_list = true; 1057 qedi_conn->active_cmd_count++; 1058 spin_unlock(&qedi_conn->list_lock); 1059 1060 qedi_ring_doorbell(qedi_conn); 1061 return 0; 1062 } 1063 1064 int qedi_send_iscsi_logout(struct qedi_conn *qedi_conn, 1065 struct iscsi_task *task) 1066 { 1067 struct iscsi_logout_req_hdr logout_pdu_header; 1068 struct scsi_sgl_task_params tx_sgl_task_params; 1069 struct scsi_sgl_task_params rx_sgl_task_params; 1070 struct iscsi_task_params task_params; 1071 struct iscsi_task_context *fw_task_ctx; 1072 struct iscsi_logout *logout_hdr = NULL; 1073 struct qedi_ctx *qedi = qedi_conn->qedi; 1074 struct qedi_cmd *qedi_cmd; 1075 struct qedi_endpoint *ep; 1076 s16 tid = 0; 1077 u16 sq_idx = 0; 1078 int rval = 0; 1079 1080 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1081 logout_hdr = (struct iscsi_logout *)task->hdr; 1082 ep = qedi_conn->ep; 1083 1084 tid = qedi_get_task_idx(qedi); 1085 if (tid == -1) 1086 return -ENOMEM; 1087 1088 fw_task_ctx = 1089 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1090 tid); 1091 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context)); 1092 1093 qedi_cmd->task_id = tid; 1094 1095 memset(&task_params, 0, sizeof(task_params)); 1096 memset(&logout_pdu_header, 0, sizeof(logout_pdu_header)); 1097 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1098 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1099 1100 /* Update header info */ 1101 logout_pdu_header.opcode = logout_hdr->opcode; 1102 logout_pdu_header.reason_code = 0x80 | logout_hdr->flags; 1103 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1104 logout_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1105 logout_pdu_header.exp_stat_sn = be32_to_cpu(logout_hdr->exp_statsn); 1106 logout_pdu_header.cmd_sn = be32_to_cpu(logout_hdr->cmdsn); 1107 logout_pdu_header.cid = qedi_conn->iscsi_conn_id; 1108 1109 /* Fill fw input params */ 1110 task_params.context = fw_task_ctx; 1111 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1112 task_params.itid = tid; 1113 task_params.cq_rss_number = 0; 1114 task_params.tx_io_size = 0; 1115 task_params.rx_io_size = 0; 1116 1117 sq_idx = qedi_get_wqe_idx(qedi_conn); 1118 task_params.sqe = &ep->sq[sq_idx]; 1119 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1120 1121 rval = init_initiator_logout_request_task(&task_params, 1122 &logout_pdu_header, 1123 NULL, NULL); 1124 if (rval) 1125 return -1; 1126 1127 spin_lock(&qedi_conn->list_lock); 1128 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1129 qedi_cmd->io_cmd_in_list = true; 1130 qedi_conn->active_cmd_count++; 1131 spin_unlock(&qedi_conn->list_lock); 1132 1133 qedi_ring_doorbell(qedi_conn); 1134 return 0; 1135 } 1136 1137 int qedi_cleanup_all_io(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn, 1138 struct iscsi_task *task, bool in_recovery) 1139 { 1140 int rval; 1141 struct iscsi_task *ctask; 1142 struct qedi_cmd *cmd, *cmd_tmp; 1143 struct iscsi_tm *tmf_hdr; 1144 unsigned int lun = 0; 1145 bool lun_reset = false; 1146 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 1147 struct iscsi_session *session = conn->session; 1148 1149 /* From recovery, task is NULL or from tmf resp valid task */ 1150 if (task) { 1151 tmf_hdr = (struct iscsi_tm *)task->hdr; 1152 1153 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1154 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) { 1155 lun_reset = true; 1156 lun = scsilun_to_int(&tmf_hdr->lun); 1157 } 1158 } 1159 1160 qedi_conn->cmd_cleanup_req = 0; 1161 atomic_set(&qedi_conn->cmd_cleanup_cmpl, 0); 1162 1163 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1164 "active_cmd_count=%d, cid=0x%x, in_recovery=%d, lun_reset=%d\n", 1165 qedi_conn->active_cmd_count, qedi_conn->iscsi_conn_id, 1166 in_recovery, lun_reset); 1167 1168 if (lun_reset) 1169 spin_lock_bh(&session->back_lock); 1170 1171 spin_lock(&qedi_conn->list_lock); 1172 1173 list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list, 1174 io_cmd) { 1175 ctask = cmd->task; 1176 if (ctask == task) 1177 continue; 1178 1179 if (lun_reset) { 1180 if (cmd->scsi_cmd && cmd->scsi_cmd->device) { 1181 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1182 "tid=0x%x itt=0x%x scsi_cmd_ptr=%p device=%p task_state=%d cmd_state=0%x cid=0x%x\n", 1183 cmd->task_id, get_itt(ctask->itt), 1184 cmd->scsi_cmd, cmd->scsi_cmd->device, 1185 ctask->state, cmd->state, 1186 qedi_conn->iscsi_conn_id); 1187 if (cmd->scsi_cmd->device->lun != lun) 1188 continue; 1189 } 1190 } 1191 qedi_conn->cmd_cleanup_req++; 1192 qedi_iscsi_cleanup_task(ctask, true); 1193 1194 cmd->io_cmd_in_list = false; 1195 list_del_init(&cmd->io_cmd); 1196 qedi_conn->active_cmd_count--; 1197 QEDI_WARN(&qedi->dbg_ctx, 1198 "Deleted active cmd list node io_cmd=%p, cid=0x%x\n", 1199 &cmd->io_cmd, qedi_conn->iscsi_conn_id); 1200 } 1201 1202 spin_unlock(&qedi_conn->list_lock); 1203 1204 if (lun_reset) 1205 spin_unlock_bh(&session->back_lock); 1206 1207 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1208 "cmd_cleanup_req=%d, cid=0x%x\n", 1209 qedi_conn->cmd_cleanup_req, 1210 qedi_conn->iscsi_conn_id); 1211 1212 rval = wait_event_interruptible_timeout(qedi_conn->wait_queue, 1213 (qedi_conn->cmd_cleanup_req == 1214 atomic_read(&qedi_conn->cmd_cleanup_cmpl)) || 1215 test_bit(QEDI_IN_RECOVERY, &qedi->flags), 1216 5 * HZ); 1217 if (rval) { 1218 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1219 "i/o cmd_cleanup_req=%d, equal to cmd_cleanup_cmpl=%d, cid=0x%x\n", 1220 qedi_conn->cmd_cleanup_req, 1221 atomic_read(&qedi_conn->cmd_cleanup_cmpl), 1222 qedi_conn->iscsi_conn_id); 1223 1224 return 0; 1225 } 1226 1227 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1228 "i/o cmd_cleanup_req=%d, not equal to cmd_cleanup_cmpl=%d, cid=0x%x\n", 1229 qedi_conn->cmd_cleanup_req, 1230 atomic_read(&qedi_conn->cmd_cleanup_cmpl), 1231 qedi_conn->iscsi_conn_id); 1232 1233 iscsi_host_for_each_session(qedi->shost, 1234 qedi_mark_device_missing); 1235 qedi_ops->common->drain(qedi->cdev); 1236 1237 /* Enable IOs for all other sessions except current.*/ 1238 if (!wait_event_interruptible_timeout(qedi_conn->wait_queue, 1239 (qedi_conn->cmd_cleanup_req == 1240 atomic_read(&qedi_conn->cmd_cleanup_cmpl)) || 1241 test_bit(QEDI_IN_RECOVERY, &qedi->flags), 1242 5 * HZ)) { 1243 iscsi_host_for_each_session(qedi->shost, 1244 qedi_mark_device_available); 1245 return -1; 1246 } 1247 1248 iscsi_host_for_each_session(qedi->shost, 1249 qedi_mark_device_available); 1250 1251 return 0; 1252 } 1253 1254 void qedi_clearsq(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn, 1255 struct iscsi_task *task) 1256 { 1257 struct qedi_endpoint *qedi_ep; 1258 int rval; 1259 1260 qedi_ep = qedi_conn->ep; 1261 qedi_conn->cmd_cleanup_req = 0; 1262 atomic_set(&qedi_conn->cmd_cleanup_cmpl, 0); 1263 1264 if (!qedi_ep) { 1265 QEDI_WARN(&qedi->dbg_ctx, 1266 "Cannot proceed, ep already disconnected, cid=0x%x\n", 1267 qedi_conn->iscsi_conn_id); 1268 return; 1269 } 1270 1271 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1272 "Clearing SQ for cid=0x%x, conn=%p, ep=%p\n", 1273 qedi_conn->iscsi_conn_id, qedi_conn, qedi_ep); 1274 1275 qedi_ops->clear_sq(qedi->cdev, qedi_ep->handle); 1276 1277 rval = qedi_cleanup_all_io(qedi, qedi_conn, task, true); 1278 if (rval) { 1279 QEDI_ERR(&qedi->dbg_ctx, 1280 "fatal error, need hard reset, cid=0x%x\n", 1281 qedi_conn->iscsi_conn_id); 1282 WARN_ON(1); 1283 } 1284 } 1285 1286 static int qedi_wait_for_cleanup_request(struct qedi_ctx *qedi, 1287 struct qedi_conn *qedi_conn, 1288 struct iscsi_task *task, 1289 struct qedi_cmd *qedi_cmd, 1290 struct qedi_work_map *list_work) 1291 { 1292 struct qedi_cmd *cmd = (struct qedi_cmd *)task->dd_data; 1293 int wait; 1294 1295 wait = wait_event_interruptible_timeout(qedi_conn->wait_queue, 1296 ((qedi_cmd->state == 1297 CLEANUP_RECV) || 1298 ((qedi_cmd->type == TYPEIO) && 1299 (cmd->state == 1300 RESPONSE_RECEIVED))), 1301 5 * HZ); 1302 if (!wait) { 1303 qedi_cmd->state = CLEANUP_WAIT_FAILED; 1304 1305 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1306 "Cleanup timedout tid=0x%x, issue connection recovery, cid=0x%x\n", 1307 cmd->task_id, qedi_conn->iscsi_conn_id); 1308 1309 return -1; 1310 } 1311 return 0; 1312 } 1313 1314 static void qedi_abort_work(struct work_struct *work) 1315 { 1316 struct qedi_cmd *qedi_cmd = 1317 container_of(work, struct qedi_cmd, tmf_work); 1318 struct qedi_conn *qedi_conn = qedi_cmd->conn; 1319 struct qedi_ctx *qedi = qedi_conn->qedi; 1320 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 1321 struct qedi_work_map *list_work = NULL; 1322 struct iscsi_task *mtask; 1323 struct qedi_cmd *cmd; 1324 struct iscsi_task *ctask; 1325 struct iscsi_tm *tmf_hdr; 1326 s16 rval = 0; 1327 1328 mtask = qedi_cmd->task; 1329 tmf_hdr = (struct iscsi_tm *)mtask->hdr; 1330 1331 spin_lock_bh(&conn->session->back_lock); 1332 ctask = iscsi_itt_to_ctask(conn, tmf_hdr->rtt); 1333 if (!ctask) { 1334 spin_unlock_bh(&conn->session->back_lock); 1335 QEDI_ERR(&qedi->dbg_ctx, "Invalid RTT. Letting abort timeout.\n"); 1336 goto clear_cleanup; 1337 } 1338 1339 if (iscsi_task_is_completed(ctask)) { 1340 spin_unlock_bh(&conn->session->back_lock); 1341 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1342 "Task already completed\n"); 1343 /* 1344 * We have to still send the TMF because libiscsi needs the 1345 * response to avoid a timeout. 1346 */ 1347 goto send_tmf; 1348 } 1349 spin_unlock_bh(&conn->session->back_lock); 1350 1351 cmd = (struct qedi_cmd *)ctask->dd_data; 1352 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1353 "Abort tmf rtt=0x%x, cmd itt=0x%x, cmd tid=0x%x, cid=0x%x\n", 1354 get_itt(tmf_hdr->rtt), get_itt(ctask->itt), cmd->task_id, 1355 qedi_conn->iscsi_conn_id); 1356 1357 if (qedi_do_not_recover) { 1358 QEDI_ERR(&qedi->dbg_ctx, "DONT SEND CLEANUP/ABORT %d\n", 1359 qedi_do_not_recover); 1360 goto clear_cleanup; 1361 } 1362 1363 list_work = kzalloc(sizeof(*list_work), GFP_NOIO); 1364 if (!list_work) { 1365 QEDI_ERR(&qedi->dbg_ctx, "Memory allocation failed\n"); 1366 goto clear_cleanup; 1367 } 1368 1369 qedi_cmd->type = TYPEIO; 1370 qedi_cmd->state = CLEANUP_WAIT; 1371 list_work->qedi_cmd = qedi_cmd; 1372 list_work->rtid = cmd->task_id; 1373 list_work->state = QEDI_WORK_SCHEDULED; 1374 list_work->ctask = ctask; 1375 qedi_cmd->list_tmf_work = list_work; 1376 1377 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1378 "Queue tmf work=%p, list node=%p, cid=0x%x, tmf flags=0x%x\n", 1379 list_work->ptr_tmf_work, list_work, qedi_conn->iscsi_conn_id, 1380 tmf_hdr->flags); 1381 1382 spin_lock_bh(&qedi_conn->tmf_work_lock); 1383 list_add_tail(&list_work->list, &qedi_conn->tmf_work_list); 1384 spin_unlock_bh(&qedi_conn->tmf_work_lock); 1385 1386 qedi_iscsi_cleanup_task(ctask, false); 1387 1388 rval = qedi_wait_for_cleanup_request(qedi, qedi_conn, ctask, qedi_cmd, 1389 list_work); 1390 if (rval == -1) { 1391 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1392 "FW cleanup got escalated, cid=0x%x\n", 1393 qedi_conn->iscsi_conn_id); 1394 goto ldel_exit; 1395 } 1396 1397 send_tmf: 1398 send_iscsi_tmf(qedi_conn, qedi_cmd->task, ctask); 1399 goto clear_cleanup; 1400 1401 ldel_exit: 1402 spin_lock_bh(&qedi_conn->tmf_work_lock); 1403 if (qedi_cmd->list_tmf_work) { 1404 list_del_init(&list_work->list); 1405 qedi_cmd->list_tmf_work = NULL; 1406 kfree(list_work); 1407 } 1408 spin_unlock_bh(&qedi_conn->tmf_work_lock); 1409 1410 spin_lock(&qedi_conn->list_lock); 1411 if (likely(cmd->io_cmd_in_list)) { 1412 cmd->io_cmd_in_list = false; 1413 list_del_init(&cmd->io_cmd); 1414 qedi_conn->active_cmd_count--; 1415 } 1416 spin_unlock(&qedi_conn->list_lock); 1417 1418 clear_cleanup: 1419 spin_lock(&qedi_conn->tmf_work_lock); 1420 qedi_conn->fw_cleanup_works--; 1421 spin_unlock(&qedi_conn->tmf_work_lock); 1422 } 1423 1424 static int send_iscsi_tmf(struct qedi_conn *qedi_conn, struct iscsi_task *mtask, 1425 struct iscsi_task *ctask) 1426 { 1427 struct iscsi_tmf_request_hdr tmf_pdu_header; 1428 struct iscsi_task_params task_params; 1429 struct qedi_ctx *qedi = qedi_conn->qedi; 1430 struct iscsi_task_context *fw_task_ctx; 1431 struct iscsi_tm *tmf_hdr; 1432 struct qedi_cmd *qedi_cmd; 1433 struct qedi_cmd *cmd; 1434 struct qedi_endpoint *ep; 1435 u32 scsi_lun[2]; 1436 s16 tid = 0; 1437 u16 sq_idx = 0; 1438 1439 tmf_hdr = (struct iscsi_tm *)mtask->hdr; 1440 qedi_cmd = (struct qedi_cmd *)mtask->dd_data; 1441 ep = qedi_conn->ep; 1442 if (!ep) 1443 return -ENODEV; 1444 1445 tid = qedi_get_task_idx(qedi); 1446 if (tid == -1) 1447 return -ENOMEM; 1448 1449 fw_task_ctx = 1450 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1451 tid); 1452 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context)); 1453 1454 qedi_cmd->task_id = tid; 1455 1456 memset(&task_params, 0, sizeof(task_params)); 1457 memset(&tmf_pdu_header, 0, sizeof(tmf_pdu_header)); 1458 1459 /* Update header info */ 1460 qedi_update_itt_map(qedi, tid, mtask->itt, qedi_cmd); 1461 tmf_pdu_header.itt = qedi_set_itt(tid, get_itt(mtask->itt)); 1462 tmf_pdu_header.cmd_sn = be32_to_cpu(tmf_hdr->cmdsn); 1463 1464 memcpy(scsi_lun, &tmf_hdr->lun, sizeof(struct scsi_lun)); 1465 tmf_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); 1466 tmf_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); 1467 1468 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1469 ISCSI_TM_FUNC_ABORT_TASK) { 1470 cmd = (struct qedi_cmd *)ctask->dd_data; 1471 tmf_pdu_header.rtt = 1472 qedi_set_itt(cmd->task_id, 1473 get_itt(tmf_hdr->rtt)); 1474 } else { 1475 tmf_pdu_header.rtt = ISCSI_RESERVED_TAG; 1476 } 1477 1478 tmf_pdu_header.opcode = tmf_hdr->opcode; 1479 tmf_pdu_header.function = tmf_hdr->flags; 1480 tmf_pdu_header.hdr_second_dword = ntoh24(tmf_hdr->dlength); 1481 tmf_pdu_header.ref_cmd_sn = be32_to_cpu(tmf_hdr->refcmdsn); 1482 1483 /* Fill fw input params */ 1484 task_params.context = fw_task_ctx; 1485 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1486 task_params.itid = tid; 1487 task_params.cq_rss_number = 0; 1488 task_params.tx_io_size = 0; 1489 task_params.rx_io_size = 0; 1490 1491 sq_idx = qedi_get_wqe_idx(qedi_conn); 1492 task_params.sqe = &ep->sq[sq_idx]; 1493 1494 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1495 init_initiator_tmf_request_task(&task_params, &tmf_pdu_header); 1496 1497 spin_lock(&qedi_conn->list_lock); 1498 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1499 qedi_cmd->io_cmd_in_list = true; 1500 qedi_conn->active_cmd_count++; 1501 spin_unlock(&qedi_conn->list_lock); 1502 1503 qedi_ring_doorbell(qedi_conn); 1504 return 0; 1505 } 1506 1507 int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn, struct iscsi_task *mtask) 1508 { 1509 struct iscsi_tm *tmf_hdr = (struct iscsi_tm *)mtask->hdr; 1510 struct qedi_cmd *qedi_cmd = mtask->dd_data; 1511 struct qedi_ctx *qedi = qedi_conn->qedi; 1512 int rc = 0; 1513 1514 switch (tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) { 1515 case ISCSI_TM_FUNC_ABORT_TASK: 1516 spin_lock(&qedi_conn->tmf_work_lock); 1517 qedi_conn->fw_cleanup_works++; 1518 spin_unlock(&qedi_conn->tmf_work_lock); 1519 1520 INIT_WORK(&qedi_cmd->tmf_work, qedi_abort_work); 1521 queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work); 1522 break; 1523 case ISCSI_TM_FUNC_LOGICAL_UNIT_RESET: 1524 case ISCSI_TM_FUNC_TARGET_WARM_RESET: 1525 case ISCSI_TM_FUNC_TARGET_COLD_RESET: 1526 rc = send_iscsi_tmf(qedi_conn, mtask, NULL); 1527 break; 1528 default: 1529 QEDI_ERR(&qedi->dbg_ctx, "Invalid tmf, cid=0x%x\n", 1530 qedi_conn->iscsi_conn_id); 1531 return -EINVAL; 1532 } 1533 1534 return rc; 1535 } 1536 1537 int qedi_send_iscsi_text(struct qedi_conn *qedi_conn, 1538 struct iscsi_task *task) 1539 { 1540 struct iscsi_text_request_hdr text_request_pdu_header; 1541 struct scsi_sgl_task_params tx_sgl_task_params; 1542 struct scsi_sgl_task_params rx_sgl_task_params; 1543 struct iscsi_task_params task_params; 1544 struct iscsi_task_context *fw_task_ctx; 1545 struct qedi_ctx *qedi = qedi_conn->qedi; 1546 struct iscsi_text *text_hdr; 1547 struct scsi_sge *req_sge = NULL; 1548 struct scsi_sge *resp_sge = NULL; 1549 struct qedi_cmd *qedi_cmd; 1550 struct qedi_endpoint *ep; 1551 s16 tid = 0; 1552 u16 sq_idx = 0; 1553 int rval = 0; 1554 1555 req_sge = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1556 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1557 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1558 text_hdr = (struct iscsi_text *)task->hdr; 1559 ep = qedi_conn->ep; 1560 1561 tid = qedi_get_task_idx(qedi); 1562 if (tid == -1) 1563 return -ENOMEM; 1564 1565 fw_task_ctx = 1566 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1567 tid); 1568 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context)); 1569 1570 qedi_cmd->task_id = tid; 1571 1572 memset(&task_params, 0, sizeof(task_params)); 1573 memset(&text_request_pdu_header, 0, sizeof(text_request_pdu_header)); 1574 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1575 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1576 1577 /* Update header info */ 1578 text_request_pdu_header.opcode = text_hdr->opcode; 1579 text_request_pdu_header.flags_attr = text_hdr->flags; 1580 1581 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1582 text_request_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1583 text_request_pdu_header.ttt = text_hdr->ttt; 1584 text_request_pdu_header.cmd_sn = be32_to_cpu(text_hdr->cmdsn); 1585 text_request_pdu_header.exp_stat_sn = be32_to_cpu(text_hdr->exp_statsn); 1586 text_request_pdu_header.hdr_second_dword = ntoh24(text_hdr->dlength); 1587 1588 /* Fill tx AHS and rx buffer */ 1589 tx_sgl_task_params.sgl = 1590 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1591 tx_sgl_task_params.sgl_phys_addr.lo = 1592 (u32)(qedi_conn->gen_pdu.req_dma_addr); 1593 tx_sgl_task_params.sgl_phys_addr.hi = 1594 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); 1595 tx_sgl_task_params.total_buffer_size = req_sge->sge_len; 1596 tx_sgl_task_params.num_sges = 1; 1597 1598 rx_sgl_task_params.sgl = 1599 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1600 rx_sgl_task_params.sgl_phys_addr.lo = 1601 (u32)(qedi_conn->gen_pdu.resp_dma_addr); 1602 rx_sgl_task_params.sgl_phys_addr.hi = 1603 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); 1604 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; 1605 rx_sgl_task_params.num_sges = 1; 1606 1607 /* Fill fw input params */ 1608 task_params.context = fw_task_ctx; 1609 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1610 task_params.itid = tid; 1611 task_params.cq_rss_number = 0; 1612 task_params.tx_io_size = ntoh24(text_hdr->dlength); 1613 task_params.rx_io_size = resp_sge->sge_len; 1614 1615 sq_idx = qedi_get_wqe_idx(qedi_conn); 1616 task_params.sqe = &ep->sq[sq_idx]; 1617 1618 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1619 rval = init_initiator_text_request_task(&task_params, 1620 &text_request_pdu_header, 1621 &tx_sgl_task_params, 1622 &rx_sgl_task_params); 1623 if (rval) 1624 return -1; 1625 1626 spin_lock(&qedi_conn->list_lock); 1627 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1628 qedi_cmd->io_cmd_in_list = true; 1629 qedi_conn->active_cmd_count++; 1630 spin_unlock(&qedi_conn->list_lock); 1631 1632 qedi_ring_doorbell(qedi_conn); 1633 return 0; 1634 } 1635 1636 int qedi_send_iscsi_nopout(struct qedi_conn *qedi_conn, 1637 struct iscsi_task *task, 1638 char *datap, int data_len, int unsol) 1639 { 1640 struct iscsi_nop_out_hdr nop_out_pdu_header; 1641 struct scsi_sgl_task_params tx_sgl_task_params; 1642 struct scsi_sgl_task_params rx_sgl_task_params; 1643 struct iscsi_task_params task_params; 1644 struct qedi_ctx *qedi = qedi_conn->qedi; 1645 struct iscsi_task_context *fw_task_ctx; 1646 struct iscsi_nopout *nopout_hdr; 1647 struct scsi_sge *resp_sge = NULL; 1648 struct qedi_cmd *qedi_cmd; 1649 struct qedi_endpoint *ep; 1650 u32 scsi_lun[2]; 1651 s16 tid = 0; 1652 u16 sq_idx = 0; 1653 int rval = 0; 1654 1655 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1656 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1657 nopout_hdr = (struct iscsi_nopout *)task->hdr; 1658 ep = qedi_conn->ep; 1659 1660 tid = qedi_get_task_idx(qedi); 1661 if (tid == -1) 1662 return -ENOMEM; 1663 1664 fw_task_ctx = 1665 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1666 tid); 1667 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context)); 1668 1669 qedi_cmd->task_id = tid; 1670 1671 memset(&task_params, 0, sizeof(task_params)); 1672 memset(&nop_out_pdu_header, 0, sizeof(nop_out_pdu_header)); 1673 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1674 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1675 1676 /* Update header info */ 1677 nop_out_pdu_header.opcode = nopout_hdr->opcode; 1678 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_CONST1, 1); 1679 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_RSRV, 0); 1680 1681 memcpy(scsi_lun, &nopout_hdr->lun, sizeof(struct scsi_lun)); 1682 nop_out_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); 1683 nop_out_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); 1684 nop_out_pdu_header.cmd_sn = be32_to_cpu(nopout_hdr->cmdsn); 1685 nop_out_pdu_header.exp_stat_sn = be32_to_cpu(nopout_hdr->exp_statsn); 1686 1687 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1688 1689 if (nopout_hdr->ttt != ISCSI_TTT_ALL_ONES) { 1690 nop_out_pdu_header.itt = be32_to_cpu(nopout_hdr->itt); 1691 nop_out_pdu_header.ttt = be32_to_cpu(nopout_hdr->ttt); 1692 } else { 1693 nop_out_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1694 nop_out_pdu_header.ttt = ISCSI_TTT_ALL_ONES; 1695 1696 spin_lock(&qedi_conn->list_lock); 1697 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1698 qedi_cmd->io_cmd_in_list = true; 1699 qedi_conn->active_cmd_count++; 1700 spin_unlock(&qedi_conn->list_lock); 1701 } 1702 1703 /* Fill tx AHS and rx buffer */ 1704 if (data_len) { 1705 tx_sgl_task_params.sgl = 1706 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1707 tx_sgl_task_params.sgl_phys_addr.lo = 1708 (u32)(qedi_conn->gen_pdu.req_dma_addr); 1709 tx_sgl_task_params.sgl_phys_addr.hi = 1710 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); 1711 tx_sgl_task_params.total_buffer_size = data_len; 1712 tx_sgl_task_params.num_sges = 1; 1713 1714 rx_sgl_task_params.sgl = 1715 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1716 rx_sgl_task_params.sgl_phys_addr.lo = 1717 (u32)(qedi_conn->gen_pdu.resp_dma_addr); 1718 rx_sgl_task_params.sgl_phys_addr.hi = 1719 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); 1720 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; 1721 rx_sgl_task_params.num_sges = 1; 1722 } 1723 1724 /* Fill fw input params */ 1725 task_params.context = fw_task_ctx; 1726 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1727 task_params.itid = tid; 1728 task_params.cq_rss_number = 0; 1729 task_params.tx_io_size = data_len; 1730 task_params.rx_io_size = resp_sge->sge_len; 1731 1732 sq_idx = qedi_get_wqe_idx(qedi_conn); 1733 task_params.sqe = &ep->sq[sq_idx]; 1734 1735 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1736 rval = init_initiator_nop_out_task(&task_params, 1737 &nop_out_pdu_header, 1738 &tx_sgl_task_params, 1739 &rx_sgl_task_params); 1740 if (rval) 1741 return -1; 1742 1743 qedi_ring_doorbell(qedi_conn); 1744 return 0; 1745 } 1746 1747 static int qedi_split_bd(struct qedi_cmd *cmd, u64 addr, int sg_len, 1748 int bd_index) 1749 { 1750 struct scsi_sge *bd = cmd->io_tbl.sge_tbl; 1751 int frag_size, sg_frags; 1752 1753 sg_frags = 0; 1754 1755 while (sg_len) { 1756 if (addr % QEDI_PAGE_SIZE) 1757 frag_size = 1758 (QEDI_PAGE_SIZE - (addr % QEDI_PAGE_SIZE)); 1759 else 1760 frag_size = (sg_len > QEDI_BD_SPLIT_SZ) ? 0 : 1761 (sg_len % QEDI_BD_SPLIT_SZ); 1762 1763 if (frag_size == 0) 1764 frag_size = QEDI_BD_SPLIT_SZ; 1765 1766 bd[bd_index + sg_frags].sge_addr.lo = (addr & 0xffffffff); 1767 bd[bd_index + sg_frags].sge_addr.hi = (addr >> 32); 1768 bd[bd_index + sg_frags].sge_len = (u16)frag_size; 1769 QEDI_INFO(&cmd->conn->qedi->dbg_ctx, QEDI_LOG_IO, 1770 "split sge %d: addr=%llx, len=%x", 1771 (bd_index + sg_frags), addr, frag_size); 1772 1773 addr += (u64)frag_size; 1774 sg_frags++; 1775 sg_len -= frag_size; 1776 } 1777 return sg_frags; 1778 } 1779 1780 static int qedi_map_scsi_sg(struct qedi_ctx *qedi, struct qedi_cmd *cmd) 1781 { 1782 struct scsi_cmnd *sc = cmd->scsi_cmd; 1783 struct scsi_sge *bd = cmd->io_tbl.sge_tbl; 1784 struct scatterlist *sg; 1785 int byte_count = 0; 1786 int bd_count = 0; 1787 int sg_count; 1788 int sg_len; 1789 int sg_frags; 1790 u64 addr, end_addr; 1791 int i; 1792 1793 WARN_ON(scsi_sg_count(sc) > QEDI_ISCSI_MAX_BDS_PER_CMD); 1794 1795 sg_count = dma_map_sg(&qedi->pdev->dev, scsi_sglist(sc), 1796 scsi_sg_count(sc), sc->sc_data_direction); 1797 1798 /* 1799 * New condition to send single SGE as cached-SGL. 1800 * Single SGE with length less than 64K. 1801 */ 1802 sg = scsi_sglist(sc); 1803 if ((sg_count == 1) && (sg_dma_len(sg) <= MAX_SGLEN_FOR_CACHESGL)) { 1804 sg_len = sg_dma_len(sg); 1805 addr = (u64)sg_dma_address(sg); 1806 1807 bd[bd_count].sge_addr.lo = (addr & 0xffffffff); 1808 bd[bd_count].sge_addr.hi = (addr >> 32); 1809 bd[bd_count].sge_len = (u16)sg_len; 1810 1811 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 1812 "single-cached-sgl: bd_count:%d addr=%llx, len=%x", 1813 sg_count, addr, sg_len); 1814 1815 return ++bd_count; 1816 } 1817 1818 scsi_for_each_sg(sc, sg, sg_count, i) { 1819 sg_len = sg_dma_len(sg); 1820 addr = (u64)sg_dma_address(sg); 1821 end_addr = (addr + sg_len); 1822 1823 /* 1824 * first sg elem in the 'list', 1825 * check if end addr is page-aligned. 1826 */ 1827 if ((i == 0) && (sg_count > 1) && (end_addr % QEDI_PAGE_SIZE)) 1828 cmd->use_slowpath = true; 1829 1830 /* 1831 * last sg elem in the 'list', 1832 * check if start addr is page-aligned. 1833 */ 1834 else if ((i == (sg_count - 1)) && 1835 (sg_count > 1) && (addr % QEDI_PAGE_SIZE)) 1836 cmd->use_slowpath = true; 1837 1838 /* 1839 * middle sg elements in list, 1840 * check if start and end addr is page-aligned 1841 */ 1842 else if ((i != 0) && (i != (sg_count - 1)) && 1843 ((addr % QEDI_PAGE_SIZE) || 1844 (end_addr % QEDI_PAGE_SIZE))) 1845 cmd->use_slowpath = true; 1846 1847 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "sg[%d] size=0x%x", 1848 i, sg_len); 1849 1850 if (sg_len > QEDI_BD_SPLIT_SZ) { 1851 sg_frags = qedi_split_bd(cmd, addr, sg_len, bd_count); 1852 } else { 1853 sg_frags = 1; 1854 bd[bd_count].sge_addr.lo = addr & 0xffffffff; 1855 bd[bd_count].sge_addr.hi = addr >> 32; 1856 bd[bd_count].sge_len = sg_len; 1857 } 1858 byte_count += sg_len; 1859 bd_count += sg_frags; 1860 } 1861 1862 if (byte_count != scsi_bufflen(sc)) 1863 QEDI_ERR(&qedi->dbg_ctx, 1864 "byte_count = %d != scsi_bufflen = %d\n", byte_count, 1865 scsi_bufflen(sc)); 1866 else 1867 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "byte_count = %d\n", 1868 byte_count); 1869 1870 WARN_ON(byte_count != scsi_bufflen(sc)); 1871 1872 return bd_count; 1873 } 1874 1875 static void qedi_iscsi_map_sg_list(struct qedi_cmd *cmd) 1876 { 1877 int bd_count; 1878 struct scsi_cmnd *sc = cmd->scsi_cmd; 1879 1880 if (scsi_sg_count(sc)) { 1881 bd_count = qedi_map_scsi_sg(cmd->conn->qedi, cmd); 1882 if (bd_count == 0) 1883 return; 1884 } else { 1885 struct scsi_sge *bd = cmd->io_tbl.sge_tbl; 1886 1887 bd[0].sge_addr.lo = 0; 1888 bd[0].sge_addr.hi = 0; 1889 bd[0].sge_len = 0; 1890 bd_count = 0; 1891 } 1892 cmd->io_tbl.sge_valid = bd_count; 1893 } 1894 1895 static void qedi_cpy_scsi_cdb(struct scsi_cmnd *sc, u32 *dstp) 1896 { 1897 u32 dword; 1898 int lpcnt; 1899 u8 *srcp; 1900 1901 lpcnt = sc->cmd_len / sizeof(dword); 1902 srcp = (u8 *)sc->cmnd; 1903 while (lpcnt--) { 1904 memcpy(&dword, (const void *)srcp, 4); 1905 *dstp = cpu_to_be32(dword); 1906 srcp += 4; 1907 dstp++; 1908 } 1909 if (sc->cmd_len & 0x3) { 1910 dword = (u32)srcp[0] | ((u32)srcp[1] << 8); 1911 *dstp = cpu_to_be32(dword); 1912 } 1913 } 1914 1915 void qedi_trace_io(struct qedi_ctx *qedi, struct iscsi_task *task, 1916 u16 tid, int8_t direction) 1917 { 1918 struct qedi_io_log *io_log; 1919 struct iscsi_conn *conn = task->conn; 1920 struct qedi_conn *qedi_conn = conn->dd_data; 1921 struct scsi_cmnd *sc_cmd = task->sc; 1922 unsigned long flags; 1923 1924 spin_lock_irqsave(&qedi->io_trace_lock, flags); 1925 1926 io_log = &qedi->io_trace_buf[qedi->io_trace_idx]; 1927 io_log->direction = direction; 1928 io_log->task_id = tid; 1929 io_log->cid = qedi_conn->iscsi_conn_id; 1930 io_log->lun = sc_cmd->device->lun; 1931 io_log->op = sc_cmd->cmnd[0]; 1932 io_log->lba[0] = sc_cmd->cmnd[2]; 1933 io_log->lba[1] = sc_cmd->cmnd[3]; 1934 io_log->lba[2] = sc_cmd->cmnd[4]; 1935 io_log->lba[3] = sc_cmd->cmnd[5]; 1936 io_log->bufflen = scsi_bufflen(sc_cmd); 1937 io_log->sg_count = scsi_sg_count(sc_cmd); 1938 io_log->fast_sgs = qedi->fast_sgls; 1939 io_log->cached_sgs = qedi->cached_sgls; 1940 io_log->slow_sgs = qedi->slow_sgls; 1941 io_log->cached_sge = qedi->use_cached_sge; 1942 io_log->slow_sge = qedi->use_slow_sge; 1943 io_log->fast_sge = qedi->use_fast_sge; 1944 io_log->result = sc_cmd->result; 1945 io_log->jiffies = jiffies; 1946 io_log->blk_req_cpu = smp_processor_id(); 1947 1948 if (direction == QEDI_IO_TRACE_REQ) { 1949 /* For requests we only care about the submission CPU */ 1950 io_log->req_cpu = smp_processor_id() % qedi->num_queues; 1951 io_log->intr_cpu = 0; 1952 io_log->blk_rsp_cpu = 0; 1953 } else if (direction == QEDI_IO_TRACE_RSP) { 1954 io_log->req_cpu = smp_processor_id() % qedi->num_queues; 1955 io_log->intr_cpu = qedi->intr_cpu; 1956 io_log->blk_rsp_cpu = smp_processor_id(); 1957 } 1958 1959 qedi->io_trace_idx++; 1960 if (qedi->io_trace_idx == QEDI_IO_TRACE_SIZE) 1961 qedi->io_trace_idx = 0; 1962 1963 qedi->use_cached_sge = false; 1964 qedi->use_slow_sge = false; 1965 qedi->use_fast_sge = false; 1966 1967 spin_unlock_irqrestore(&qedi->io_trace_lock, flags); 1968 } 1969 1970 int qedi_iscsi_send_ioreq(struct iscsi_task *task) 1971 { 1972 struct iscsi_conn *conn = task->conn; 1973 struct iscsi_session *session = conn->session; 1974 struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session); 1975 struct qedi_ctx *qedi = iscsi_host_priv(shost); 1976 struct qedi_conn *qedi_conn = conn->dd_data; 1977 struct qedi_cmd *cmd = task->dd_data; 1978 struct scsi_cmnd *sc = task->sc; 1979 struct iscsi_cmd_hdr cmd_pdu_header; 1980 struct scsi_sgl_task_params tx_sgl_task_params; 1981 struct scsi_sgl_task_params rx_sgl_task_params; 1982 struct scsi_sgl_task_params *prx_sgl = NULL; 1983 struct scsi_sgl_task_params *ptx_sgl = NULL; 1984 struct iscsi_task_params task_params; 1985 struct iscsi_conn_params conn_params; 1986 struct scsi_initiator_cmd_params cmd_params; 1987 struct iscsi_task_context *fw_task_ctx; 1988 struct iscsi_cls_conn *cls_conn; 1989 struct iscsi_scsi_req *hdr = (struct iscsi_scsi_req *)task->hdr; 1990 enum iscsi_task_type task_type = MAX_ISCSI_TASK_TYPE; 1991 struct qedi_endpoint *ep; 1992 u32 scsi_lun[2]; 1993 s16 tid = 0; 1994 u16 sq_idx = 0; 1995 u16 cq_idx; 1996 int rval = 0; 1997 1998 ep = qedi_conn->ep; 1999 cls_conn = qedi_conn->cls_conn; 2000 conn = cls_conn->dd_data; 2001 2002 qedi_iscsi_map_sg_list(cmd); 2003 int_to_scsilun(sc->device->lun, (struct scsi_lun *)scsi_lun); 2004 2005 tid = qedi_get_task_idx(qedi); 2006 if (tid == -1) 2007 return -ENOMEM; 2008 2009 fw_task_ctx = 2010 (struct iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 2011 tid); 2012 memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context)); 2013 2014 cmd->task_id = tid; 2015 2016 memset(&task_params, 0, sizeof(task_params)); 2017 memset(&cmd_pdu_header, 0, sizeof(cmd_pdu_header)); 2018 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 2019 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 2020 memset(&conn_params, 0, sizeof(conn_params)); 2021 memset(&cmd_params, 0, sizeof(cmd_params)); 2022 2023 cq_idx = smp_processor_id() % qedi->num_queues; 2024 /* Update header info */ 2025 SET_FIELD(cmd_pdu_header.flags_attr, ISCSI_CMD_HDR_ATTR, 2026 ISCSI_ATTR_SIMPLE); 2027 if (hdr->cdb[0] != TEST_UNIT_READY) { 2028 if (sc->sc_data_direction == DMA_TO_DEVICE) { 2029 SET_FIELD(cmd_pdu_header.flags_attr, 2030 ISCSI_CMD_HDR_WRITE, 1); 2031 task_type = ISCSI_TASK_TYPE_INITIATOR_WRITE; 2032 } else { 2033 SET_FIELD(cmd_pdu_header.flags_attr, 2034 ISCSI_CMD_HDR_READ, 1); 2035 task_type = ISCSI_TASK_TYPE_INITIATOR_READ; 2036 } 2037 } 2038 2039 cmd_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); 2040 cmd_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); 2041 2042 qedi_update_itt_map(qedi, tid, task->itt, cmd); 2043 cmd_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 2044 cmd_pdu_header.expected_transfer_length = cpu_to_be32(hdr->data_length); 2045 cmd_pdu_header.hdr_second_dword = ntoh24(hdr->dlength); 2046 cmd_pdu_header.cmd_sn = be32_to_cpu(hdr->cmdsn); 2047 cmd_pdu_header.hdr_first_byte = hdr->opcode; 2048 qedi_cpy_scsi_cdb(sc, (u32 *)cmd_pdu_header.cdb); 2049 2050 /* Fill tx AHS and rx buffer */ 2051 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) { 2052 tx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl; 2053 tx_sgl_task_params.sgl_phys_addr.lo = 2054 (u32)(cmd->io_tbl.sge_tbl_dma); 2055 tx_sgl_task_params.sgl_phys_addr.hi = 2056 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32); 2057 tx_sgl_task_params.total_buffer_size = scsi_bufflen(sc); 2058 tx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid; 2059 if (cmd->use_slowpath) 2060 tx_sgl_task_params.small_mid_sge = true; 2061 } else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) { 2062 rx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl; 2063 rx_sgl_task_params.sgl_phys_addr.lo = 2064 (u32)(cmd->io_tbl.sge_tbl_dma); 2065 rx_sgl_task_params.sgl_phys_addr.hi = 2066 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32); 2067 rx_sgl_task_params.total_buffer_size = scsi_bufflen(sc); 2068 rx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid; 2069 } 2070 2071 /* Add conn param */ 2072 conn_params.first_burst_length = conn->session->first_burst; 2073 conn_params.max_send_pdu_length = conn->max_xmit_dlength; 2074 conn_params.max_burst_length = conn->session->max_burst; 2075 if (conn->session->initial_r2t_en) 2076 conn_params.initial_r2t = true; 2077 if (conn->session->imm_data_en) 2078 conn_params.immediate_data = true; 2079 2080 /* Add cmd params */ 2081 cmd_params.sense_data_buffer_phys_addr.lo = (u32)cmd->sense_buffer_dma; 2082 cmd_params.sense_data_buffer_phys_addr.hi = 2083 (u32)((u64)cmd->sense_buffer_dma >> 32); 2084 /* Fill fw input params */ 2085 task_params.context = fw_task_ctx; 2086 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 2087 task_params.itid = tid; 2088 task_params.cq_rss_number = cq_idx; 2089 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) 2090 task_params.tx_io_size = scsi_bufflen(sc); 2091 else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) 2092 task_params.rx_io_size = scsi_bufflen(sc); 2093 2094 sq_idx = qedi_get_wqe_idx(qedi_conn); 2095 task_params.sqe = &ep->sq[sq_idx]; 2096 2097 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 2098 "%s: %s-SGL: sg_len=0x%x num_sges=0x%x first-sge-lo=0x%x first-sge-hi=0x%x\n", 2099 (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) ? 2100 "Write " : "Read ", (cmd->io_tbl.sge_valid == 1) ? 2101 "Single" : (cmd->use_slowpath ? "SLOW" : "FAST"), 2102 (u16)cmd->io_tbl.sge_valid, scsi_bufflen(sc), 2103 (u32)(cmd->io_tbl.sge_tbl_dma), 2104 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32)); 2105 2106 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 2107 2108 if (task_params.tx_io_size != 0) 2109 ptx_sgl = &tx_sgl_task_params; 2110 if (task_params.rx_io_size != 0) 2111 prx_sgl = &rx_sgl_task_params; 2112 2113 rval = init_initiator_rw_iscsi_task(&task_params, &conn_params, 2114 &cmd_params, &cmd_pdu_header, 2115 ptx_sgl, prx_sgl, 2116 NULL); 2117 if (rval) 2118 return -1; 2119 2120 spin_lock(&qedi_conn->list_lock); 2121 list_add_tail(&cmd->io_cmd, &qedi_conn->active_cmd_list); 2122 cmd->io_cmd_in_list = true; 2123 qedi_conn->active_cmd_count++; 2124 spin_unlock(&qedi_conn->list_lock); 2125 2126 qedi_ring_doorbell(qedi_conn); 2127 return 0; 2128 } 2129 2130 int qedi_iscsi_cleanup_task(struct iscsi_task *task, bool mark_cmd_node_deleted) 2131 { 2132 struct iscsi_task_params task_params; 2133 struct qedi_endpoint *ep; 2134 struct iscsi_conn *conn = task->conn; 2135 struct qedi_conn *qedi_conn = conn->dd_data; 2136 struct qedi_cmd *cmd = task->dd_data; 2137 u16 sq_idx = 0; 2138 int rval = 0; 2139 2140 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 2141 "issue cleanup tid=0x%x itt=0x%x task_state=%d cmd_state=0%x cid=0x%x\n", 2142 cmd->task_id, get_itt(task->itt), task->state, 2143 cmd->state, qedi_conn->iscsi_conn_id); 2144 2145 memset(&task_params, 0, sizeof(task_params)); 2146 ep = qedi_conn->ep; 2147 2148 sq_idx = qedi_get_wqe_idx(qedi_conn); 2149 2150 task_params.sqe = &ep->sq[sq_idx]; 2151 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 2152 task_params.itid = cmd->task_id; 2153 2154 rval = init_cleanup_task(&task_params); 2155 if (rval) 2156 return rval; 2157 2158 qedi_ring_doorbell(qedi_conn); 2159 return 0; 2160 } 2161