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 e4_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 e4_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 (!sc_cmd->request) { 613 QEDI_WARN(&qedi->dbg_ctx, 614 "sc_cmd->request is NULL, sc_cmd=%p.\n", 615 sc_cmd); 616 goto error; 617 } 618 619 if (!sc_cmd->request->q) { 620 QEDI_WARN(&qedi->dbg_ctx, 621 "request->q is NULL so request is not valid, sc_cmd=%p.\n", 622 sc_cmd); 623 goto error; 624 } 625 626 qedi_iscsi_unmap_sg_list(cmd); 627 628 hdr = (struct iscsi_scsi_rsp *)task->hdr; 629 hdr->opcode = cqe_data_in->opcode; 630 hdr->max_cmdsn = cpu_to_be32(cqe_data_in->max_cmd_sn); 631 hdr->exp_cmdsn = cpu_to_be32(cqe_data_in->exp_cmd_sn); 632 hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age); 633 hdr->response = cqe_data_in->reserved1; 634 hdr->cmd_status = cqe_data_in->status_rsvd; 635 hdr->flags = cqe_data_in->flags; 636 hdr->residual_count = cpu_to_be32(cqe_data_in->residual_count); 637 638 if (hdr->cmd_status == SAM_STAT_CHECK_CONDITION) { 639 datalen = cqe_data_in->reserved2 & 640 ISCSI_COMMON_HDR_DATA_SEG_LEN_MASK; 641 memcpy((char *)conn->data, (char *)cmd->sense_buffer, datalen); 642 } 643 644 /* If f/w reports data underrun err then set residual to IO transfer 645 * length, set Underrun flag and clear Overrun flag explicitly 646 */ 647 if (unlikely(cqe_err_bits && 648 GET_FIELD(cqe_err_bits, CQE_ERROR_BITMAP_UNDER_RUN_ERR))) { 649 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 650 "Under flow itt=0x%x proto flags=0x%x tid=0x%x cid 0x%x fw resid 0x%x sc dlen 0x%x\n", 651 hdr->itt, cqe_data_in->flags, cmd->task_id, 652 qedi_conn->iscsi_conn_id, hdr->residual_count, 653 scsi_bufflen(sc_cmd)); 654 hdr->residual_count = cpu_to_be32(scsi_bufflen(sc_cmd)); 655 hdr->flags |= ISCSI_FLAG_CMD_UNDERFLOW; 656 hdr->flags &= (~ISCSI_FLAG_CMD_OVERFLOW); 657 } 658 659 spin_lock(&qedi_conn->list_lock); 660 if (likely(cmd->io_cmd_in_list)) { 661 cmd->io_cmd_in_list = false; 662 list_del_init(&cmd->io_cmd); 663 qedi_conn->active_cmd_count--; 664 } 665 spin_unlock(&qedi_conn->list_lock); 666 667 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, 668 "Freeing tid=0x%x for cid=0x%x\n", 669 cmd->task_id, qedi_conn->iscsi_conn_id); 670 cmd->state = RESPONSE_RECEIVED; 671 if (qedi_io_tracing) 672 qedi_trace_io(qedi, task, cmd->task_id, QEDI_IO_TRACE_RSP); 673 674 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, 675 conn->data, datalen); 676 error: 677 spin_unlock_bh(&session->back_lock); 678 } 679 680 static void qedi_mtask_completion(struct qedi_ctx *qedi, 681 union iscsi_cqe *cqe, 682 struct iscsi_task *task, 683 struct qedi_conn *conn, uint16_t que_idx) 684 { 685 struct iscsi_conn *iscsi_conn; 686 u32 hdr_opcode; 687 688 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte; 689 iscsi_conn = conn->cls_conn->dd_data; 690 691 switch (hdr_opcode) { 692 case ISCSI_OPCODE_SCSI_RESPONSE: 693 case ISCSI_OPCODE_DATA_IN: 694 qedi_scsi_completion(qedi, cqe, task, iscsi_conn); 695 break; 696 case ISCSI_OPCODE_LOGIN_RESPONSE: 697 qedi_process_login_resp(qedi, cqe, task, conn); 698 break; 699 case ISCSI_OPCODE_TMF_RESPONSE: 700 qedi_process_tmf_resp(qedi, cqe, task, conn); 701 break; 702 case ISCSI_OPCODE_TEXT_RESPONSE: 703 qedi_process_text_resp(qedi, cqe, task, conn); 704 break; 705 case ISCSI_OPCODE_LOGOUT_RESPONSE: 706 qedi_process_logout_resp(qedi, cqe, task, conn); 707 break; 708 case ISCSI_OPCODE_NOP_IN: 709 qedi_process_nopin_mesg(qedi, cqe, task, conn, que_idx); 710 break; 711 default: 712 QEDI_ERR(&qedi->dbg_ctx, "unknown opcode\n"); 713 } 714 } 715 716 static void qedi_process_nopin_local_cmpl(struct qedi_ctx *qedi, 717 struct iscsi_cqe_solicited *cqe, 718 struct iscsi_task *task, 719 struct qedi_conn *qedi_conn) 720 { 721 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 722 struct iscsi_session *session = conn->session; 723 struct qedi_cmd *cmd = task->dd_data; 724 725 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UNSOL, 726 "itid=0x%x, cmd task id=0x%x\n", 727 cqe->itid, cmd->task_id); 728 729 cmd->state = RESPONSE_RECEIVED; 730 731 spin_lock_bh(&session->back_lock); 732 __iscsi_put_task(task); 733 spin_unlock_bh(&session->back_lock); 734 } 735 736 static void qedi_process_cmd_cleanup_resp(struct qedi_ctx *qedi, 737 struct iscsi_cqe_solicited *cqe, 738 struct iscsi_conn *conn) 739 { 740 struct qedi_work_map *work, *work_tmp; 741 u32 proto_itt = cqe->itid; 742 itt_t protoitt = 0; 743 int found = 0; 744 struct qedi_cmd *qedi_cmd = NULL; 745 u32 iscsi_cid; 746 struct qedi_conn *qedi_conn; 747 struct qedi_cmd *dbg_cmd; 748 struct iscsi_task *mtask, *task; 749 struct iscsi_tm *tmf_hdr = NULL; 750 751 iscsi_cid = cqe->conn_id; 752 qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; 753 if (!qedi_conn) { 754 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 755 "icid not found 0x%x\n", cqe->conn_id); 756 return; 757 } 758 759 /* Based on this itt get the corresponding qedi_cmd */ 760 spin_lock_bh(&qedi_conn->tmf_work_lock); 761 list_for_each_entry_safe(work, work_tmp, &qedi_conn->tmf_work_list, 762 list) { 763 if (work->rtid == proto_itt) { 764 /* We found the command */ 765 qedi_cmd = work->qedi_cmd; 766 if (!qedi_cmd->list_tmf_work) { 767 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 768 "TMF work not found, cqe->tid=0x%x, cid=0x%x\n", 769 proto_itt, qedi_conn->iscsi_conn_id); 770 WARN_ON(1); 771 } 772 found = 1; 773 mtask = qedi_cmd->task; 774 task = work->ctask; 775 tmf_hdr = (struct iscsi_tm *)mtask->hdr; 776 777 list_del_init(&work->list); 778 kfree(work); 779 qedi_cmd->list_tmf_work = NULL; 780 } 781 } 782 783 if (!found) { 784 spin_unlock_bh(&qedi_conn->tmf_work_lock); 785 goto check_cleanup_reqs; 786 } 787 788 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 789 "TMF work, cqe->tid=0x%x, tmf flags=0x%x, cid=0x%x\n", 790 proto_itt, tmf_hdr->flags, qedi_conn->iscsi_conn_id); 791 792 spin_lock_bh(&conn->session->back_lock); 793 if (iscsi_task_is_completed(task)) { 794 QEDI_NOTICE(&qedi->dbg_ctx, 795 "IO task completed, tmf rtt=0x%x, cid=0x%x\n", 796 get_itt(tmf_hdr->rtt), qedi_conn->iscsi_conn_id); 797 goto unlock; 798 } 799 800 dbg_cmd = task->dd_data; 801 802 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 803 "Abort tmf rtt=0x%x, i/o itt=0x%x, i/o tid=0x%x, cid=0x%x\n", 804 get_itt(tmf_hdr->rtt), get_itt(task->itt), dbg_cmd->task_id, 805 qedi_conn->iscsi_conn_id); 806 807 spin_lock(&qedi_conn->list_lock); 808 if (likely(dbg_cmd->io_cmd_in_list)) { 809 dbg_cmd->io_cmd_in_list = false; 810 list_del_init(&dbg_cmd->io_cmd); 811 qedi_conn->active_cmd_count--; 812 } 813 spin_unlock(&qedi_conn->list_lock); 814 qedi_cmd->state = CLEANUP_RECV; 815 unlock: 816 spin_unlock_bh(&conn->session->back_lock); 817 spin_unlock_bh(&qedi_conn->tmf_work_lock); 818 wake_up_interruptible(&qedi_conn->wait_queue); 819 return; 820 821 check_cleanup_reqs: 822 if (qedi_conn->cmd_cleanup_req > 0) { 823 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, 824 "Freeing tid=0x%x for cid=0x%x\n", 825 cqe->itid, qedi_conn->iscsi_conn_id); 826 qedi_conn->cmd_cleanup_cmpl++; 827 wake_up(&qedi_conn->wait_queue); 828 } else { 829 QEDI_ERR(&qedi->dbg_ctx, 830 "Delayed or untracked cleanup response, itt=0x%x, tid=0x%x, cid=0x%x\n", 831 protoitt, cqe->itid, qedi_conn->iscsi_conn_id); 832 } 833 } 834 835 void qedi_fp_process_cqes(struct qedi_work *work) 836 { 837 struct qedi_ctx *qedi = work->qedi; 838 union iscsi_cqe *cqe = &work->cqe; 839 struct iscsi_task *task = NULL; 840 struct iscsi_nopout *nopout_hdr; 841 struct qedi_conn *q_conn; 842 struct iscsi_conn *conn; 843 struct qedi_cmd *qedi_cmd; 844 u32 comp_type; 845 u32 iscsi_cid; 846 u32 hdr_opcode; 847 u16 que_idx = work->que_idx; 848 u8 cqe_err_bits = 0; 849 850 comp_type = cqe->cqe_common.cqe_type; 851 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte; 852 cqe_err_bits = 853 cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits; 854 855 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 856 "fw_cid=0x%x, cqe type=0x%x, opcode=0x%x\n", 857 cqe->cqe_common.conn_id, comp_type, hdr_opcode); 858 859 if (comp_type >= MAX_ISCSI_CQES_TYPE) { 860 QEDI_WARN(&qedi->dbg_ctx, "Invalid CqE type\n"); 861 return; 862 } 863 864 iscsi_cid = cqe->cqe_common.conn_id; 865 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; 866 if (!q_conn) { 867 QEDI_WARN(&qedi->dbg_ctx, 868 "Session no longer exists for cid=0x%x!!\n", 869 iscsi_cid); 870 return; 871 } 872 873 conn = q_conn->cls_conn->dd_data; 874 875 if (unlikely(cqe_err_bits && 876 GET_FIELD(cqe_err_bits, 877 CQE_ERROR_BITMAP_DATA_DIGEST_ERR))) { 878 iscsi_conn_failure(conn, ISCSI_ERR_DATA_DGST); 879 return; 880 } 881 882 switch (comp_type) { 883 case ISCSI_CQE_TYPE_SOLICITED: 884 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE: 885 qedi_cmd = container_of(work, struct qedi_cmd, cqe_work); 886 task = qedi_cmd->task; 887 if (!task) { 888 QEDI_WARN(&qedi->dbg_ctx, "task is NULL\n"); 889 return; 890 } 891 892 /* Process NOPIN local completion */ 893 nopout_hdr = (struct iscsi_nopout *)task->hdr; 894 if ((nopout_hdr->itt == RESERVED_ITT) && 895 (cqe->cqe_solicited.itid != (u16)RESERVED_ITT)) { 896 qedi_process_nopin_local_cmpl(qedi, &cqe->cqe_solicited, 897 task, q_conn); 898 } else { 899 cqe->cqe_solicited.itid = 900 qedi_get_itt(cqe->cqe_solicited); 901 /* Process other solicited responses */ 902 qedi_mtask_completion(qedi, cqe, task, q_conn, que_idx); 903 } 904 break; 905 case ISCSI_CQE_TYPE_UNSOLICITED: 906 switch (hdr_opcode) { 907 case ISCSI_OPCODE_NOP_IN: 908 qedi_process_nopin_mesg(qedi, cqe, task, q_conn, 909 que_idx); 910 break; 911 case ISCSI_OPCODE_ASYNC_MSG: 912 qedi_process_async_mesg(qedi, cqe, task, q_conn, 913 que_idx); 914 break; 915 case ISCSI_OPCODE_REJECT: 916 qedi_process_reject_mesg(qedi, cqe, task, q_conn, 917 que_idx); 918 break; 919 } 920 goto exit_fp_process; 921 case ISCSI_CQE_TYPE_DUMMY: 922 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "Dummy CqE\n"); 923 goto exit_fp_process; 924 case ISCSI_CQE_TYPE_TASK_CLEANUP: 925 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "CleanUp CqE\n"); 926 qedi_process_cmd_cleanup_resp(qedi, &cqe->cqe_solicited, conn); 927 goto exit_fp_process; 928 default: 929 QEDI_ERR(&qedi->dbg_ctx, "Error cqe.\n"); 930 break; 931 } 932 933 exit_fp_process: 934 return; 935 } 936 937 static void qedi_ring_doorbell(struct qedi_conn *qedi_conn) 938 { 939 struct iscsi_db_data dbell = { 0 }; 940 941 dbell.agg_flags = 0; 942 943 dbell.params |= DB_DEST_XCM << ISCSI_DB_DATA_DEST_SHIFT; 944 dbell.params |= DB_AGG_CMD_SET << ISCSI_DB_DATA_AGG_CMD_SHIFT; 945 dbell.params |= 946 DQ_XCM_ISCSI_SQ_PROD_CMD << ISCSI_DB_DATA_AGG_VAL_SEL_SHIFT; 947 948 dbell.sq_prod = qedi_conn->ep->fw_sq_prod_idx; 949 writel(*(u32 *)&dbell, qedi_conn->ep->p_doorbell); 950 951 /* Make sure fw write idx is coherent, and include both memory barriers 952 * as a failsafe as for some architectures the call is the same but on 953 * others they are two different assembly operations. 954 */ 955 wmb(); 956 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_MP_REQ, 957 "prod_idx=0x%x, fw_prod_idx=0x%x, cid=0x%x\n", 958 qedi_conn->ep->sq_prod_idx, qedi_conn->ep->fw_sq_prod_idx, 959 qedi_conn->iscsi_conn_id); 960 } 961 962 static u16 qedi_get_wqe_idx(struct qedi_conn *qedi_conn) 963 { 964 struct qedi_endpoint *ep; 965 u16 rval; 966 967 ep = qedi_conn->ep; 968 rval = ep->sq_prod_idx; 969 970 /* Increament SQ index */ 971 ep->sq_prod_idx++; 972 ep->fw_sq_prod_idx++; 973 if (ep->sq_prod_idx == QEDI_SQ_SIZE) 974 ep->sq_prod_idx = 0; 975 976 return rval; 977 } 978 979 int qedi_send_iscsi_login(struct qedi_conn *qedi_conn, 980 struct iscsi_task *task) 981 { 982 struct iscsi_login_req_hdr login_req_pdu_header; 983 struct scsi_sgl_task_params tx_sgl_task_params; 984 struct scsi_sgl_task_params rx_sgl_task_params; 985 struct iscsi_task_params task_params; 986 struct e4_iscsi_task_context *fw_task_ctx; 987 struct qedi_ctx *qedi = qedi_conn->qedi; 988 struct iscsi_login_req *login_hdr; 989 struct scsi_sge *resp_sge = NULL; 990 struct qedi_cmd *qedi_cmd; 991 struct qedi_endpoint *ep; 992 s16 tid = 0; 993 u16 sq_idx = 0; 994 int rval = 0; 995 996 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 997 qedi_cmd = (struct qedi_cmd *)task->dd_data; 998 ep = qedi_conn->ep; 999 login_hdr = (struct iscsi_login_req *)task->hdr; 1000 1001 tid = qedi_get_task_idx(qedi); 1002 if (tid == -1) 1003 return -ENOMEM; 1004 1005 fw_task_ctx = 1006 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1007 tid); 1008 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1009 1010 qedi_cmd->task_id = tid; 1011 1012 memset(&task_params, 0, sizeof(task_params)); 1013 memset(&login_req_pdu_header, 0, sizeof(login_req_pdu_header)); 1014 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1015 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1016 /* Update header info */ 1017 login_req_pdu_header.opcode = login_hdr->opcode; 1018 login_req_pdu_header.version_min = login_hdr->min_version; 1019 login_req_pdu_header.version_max = login_hdr->max_version; 1020 login_req_pdu_header.flags_attr = login_hdr->flags; 1021 login_req_pdu_header.isid_tabc = swab32p((u32 *)login_hdr->isid); 1022 login_req_pdu_header.isid_d = swab16p((u16 *)&login_hdr->isid[4]); 1023 1024 login_req_pdu_header.tsih = login_hdr->tsih; 1025 login_req_pdu_header.hdr_second_dword = ntoh24(login_hdr->dlength); 1026 1027 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1028 login_req_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1029 login_req_pdu_header.cid = qedi_conn->iscsi_conn_id; 1030 login_req_pdu_header.cmd_sn = be32_to_cpu(login_hdr->cmdsn); 1031 login_req_pdu_header.exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn); 1032 login_req_pdu_header.exp_stat_sn = 0; 1033 1034 /* Fill tx AHS and rx buffer */ 1035 tx_sgl_task_params.sgl = 1036 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1037 tx_sgl_task_params.sgl_phys_addr.lo = 1038 (u32)(qedi_conn->gen_pdu.req_dma_addr); 1039 tx_sgl_task_params.sgl_phys_addr.hi = 1040 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); 1041 tx_sgl_task_params.total_buffer_size = ntoh24(login_hdr->dlength); 1042 tx_sgl_task_params.num_sges = 1; 1043 1044 rx_sgl_task_params.sgl = 1045 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1046 rx_sgl_task_params.sgl_phys_addr.lo = 1047 (u32)(qedi_conn->gen_pdu.resp_dma_addr); 1048 rx_sgl_task_params.sgl_phys_addr.hi = 1049 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); 1050 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; 1051 rx_sgl_task_params.num_sges = 1; 1052 1053 /* Fill fw input params */ 1054 task_params.context = fw_task_ctx; 1055 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1056 task_params.itid = tid; 1057 task_params.cq_rss_number = 0; 1058 task_params.tx_io_size = ntoh24(login_hdr->dlength); 1059 task_params.rx_io_size = resp_sge->sge_len; 1060 1061 sq_idx = qedi_get_wqe_idx(qedi_conn); 1062 task_params.sqe = &ep->sq[sq_idx]; 1063 1064 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1065 rval = init_initiator_login_request_task(&task_params, 1066 &login_req_pdu_header, 1067 &tx_sgl_task_params, 1068 &rx_sgl_task_params); 1069 if (rval) 1070 return -1; 1071 1072 spin_lock(&qedi_conn->list_lock); 1073 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1074 qedi_cmd->io_cmd_in_list = true; 1075 qedi_conn->active_cmd_count++; 1076 spin_unlock(&qedi_conn->list_lock); 1077 1078 qedi_ring_doorbell(qedi_conn); 1079 return 0; 1080 } 1081 1082 int qedi_send_iscsi_logout(struct qedi_conn *qedi_conn, 1083 struct iscsi_task *task) 1084 { 1085 struct iscsi_logout_req_hdr logout_pdu_header; 1086 struct scsi_sgl_task_params tx_sgl_task_params; 1087 struct scsi_sgl_task_params rx_sgl_task_params; 1088 struct iscsi_task_params task_params; 1089 struct e4_iscsi_task_context *fw_task_ctx; 1090 struct iscsi_logout *logout_hdr = NULL; 1091 struct qedi_ctx *qedi = qedi_conn->qedi; 1092 struct qedi_cmd *qedi_cmd; 1093 struct qedi_endpoint *ep; 1094 s16 tid = 0; 1095 u16 sq_idx = 0; 1096 int rval = 0; 1097 1098 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1099 logout_hdr = (struct iscsi_logout *)task->hdr; 1100 ep = qedi_conn->ep; 1101 1102 tid = qedi_get_task_idx(qedi); 1103 if (tid == -1) 1104 return -ENOMEM; 1105 1106 fw_task_ctx = 1107 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1108 tid); 1109 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1110 1111 qedi_cmd->task_id = tid; 1112 1113 memset(&task_params, 0, sizeof(task_params)); 1114 memset(&logout_pdu_header, 0, sizeof(logout_pdu_header)); 1115 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1116 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1117 1118 /* Update header info */ 1119 logout_pdu_header.opcode = logout_hdr->opcode; 1120 logout_pdu_header.reason_code = 0x80 | logout_hdr->flags; 1121 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1122 logout_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1123 logout_pdu_header.exp_stat_sn = be32_to_cpu(logout_hdr->exp_statsn); 1124 logout_pdu_header.cmd_sn = be32_to_cpu(logout_hdr->cmdsn); 1125 logout_pdu_header.cid = qedi_conn->iscsi_conn_id; 1126 1127 /* Fill fw input params */ 1128 task_params.context = fw_task_ctx; 1129 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1130 task_params.itid = tid; 1131 task_params.cq_rss_number = 0; 1132 task_params.tx_io_size = 0; 1133 task_params.rx_io_size = 0; 1134 1135 sq_idx = qedi_get_wqe_idx(qedi_conn); 1136 task_params.sqe = &ep->sq[sq_idx]; 1137 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1138 1139 rval = init_initiator_logout_request_task(&task_params, 1140 &logout_pdu_header, 1141 NULL, NULL); 1142 if (rval) 1143 return -1; 1144 1145 spin_lock(&qedi_conn->list_lock); 1146 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1147 qedi_cmd->io_cmd_in_list = true; 1148 qedi_conn->active_cmd_count++; 1149 spin_unlock(&qedi_conn->list_lock); 1150 1151 qedi_ring_doorbell(qedi_conn); 1152 return 0; 1153 } 1154 1155 int qedi_cleanup_all_io(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn, 1156 struct iscsi_task *task, bool in_recovery) 1157 { 1158 int rval; 1159 struct iscsi_task *ctask; 1160 struct qedi_cmd *cmd, *cmd_tmp; 1161 struct iscsi_tm *tmf_hdr; 1162 unsigned int lun = 0; 1163 bool lun_reset = false; 1164 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 1165 struct iscsi_session *session = conn->session; 1166 1167 /* From recovery, task is NULL or from tmf resp valid task */ 1168 if (task) { 1169 tmf_hdr = (struct iscsi_tm *)task->hdr; 1170 1171 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1172 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) { 1173 lun_reset = true; 1174 lun = scsilun_to_int(&tmf_hdr->lun); 1175 } 1176 } 1177 1178 qedi_conn->cmd_cleanup_req = 0; 1179 qedi_conn->cmd_cleanup_cmpl = 0; 1180 1181 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1182 "active_cmd_count=%d, cid=0x%x, in_recovery=%d, lun_reset=%d\n", 1183 qedi_conn->active_cmd_count, qedi_conn->iscsi_conn_id, 1184 in_recovery, lun_reset); 1185 1186 if (lun_reset) 1187 spin_lock_bh(&session->back_lock); 1188 1189 spin_lock(&qedi_conn->list_lock); 1190 1191 list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list, 1192 io_cmd) { 1193 ctask = cmd->task; 1194 if (ctask == task) 1195 continue; 1196 1197 if (lun_reset) { 1198 if (cmd->scsi_cmd && cmd->scsi_cmd->device) { 1199 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1200 "tid=0x%x itt=0x%x scsi_cmd_ptr=%p device=%p task_state=%d cmd_state=0%x cid=0x%x\n", 1201 cmd->task_id, get_itt(ctask->itt), 1202 cmd->scsi_cmd, cmd->scsi_cmd->device, 1203 ctask->state, cmd->state, 1204 qedi_conn->iscsi_conn_id); 1205 if (cmd->scsi_cmd->device->lun != lun) 1206 continue; 1207 } 1208 } 1209 qedi_conn->cmd_cleanup_req++; 1210 qedi_iscsi_cleanup_task(ctask, true); 1211 1212 cmd->io_cmd_in_list = false; 1213 list_del_init(&cmd->io_cmd); 1214 qedi_conn->active_cmd_count--; 1215 QEDI_WARN(&qedi->dbg_ctx, 1216 "Deleted active cmd list node io_cmd=%p, cid=0x%x\n", 1217 &cmd->io_cmd, qedi_conn->iscsi_conn_id); 1218 } 1219 1220 spin_unlock(&qedi_conn->list_lock); 1221 1222 if (lun_reset) 1223 spin_unlock_bh(&session->back_lock); 1224 1225 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1226 "cmd_cleanup_req=%d, cid=0x%x\n", 1227 qedi_conn->cmd_cleanup_req, 1228 qedi_conn->iscsi_conn_id); 1229 1230 rval = wait_event_interruptible_timeout(qedi_conn->wait_queue, 1231 ((qedi_conn->cmd_cleanup_req == 1232 qedi_conn->cmd_cleanup_cmpl) || 1233 test_bit(QEDI_IN_RECOVERY, 1234 &qedi->flags)), 1235 5 * HZ); 1236 if (rval) { 1237 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1238 "i/o cmd_cleanup_req=%d, equal to cmd_cleanup_cmpl=%d, cid=0x%x\n", 1239 qedi_conn->cmd_cleanup_req, 1240 qedi_conn->cmd_cleanup_cmpl, 1241 qedi_conn->iscsi_conn_id); 1242 1243 return 0; 1244 } 1245 1246 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1247 "i/o cmd_cleanup_req=%d, not equal to cmd_cleanup_cmpl=%d, cid=0x%x\n", 1248 qedi_conn->cmd_cleanup_req, 1249 qedi_conn->cmd_cleanup_cmpl, 1250 qedi_conn->iscsi_conn_id); 1251 1252 iscsi_host_for_each_session(qedi->shost, 1253 qedi_mark_device_missing); 1254 qedi_ops->common->drain(qedi->cdev); 1255 1256 /* Enable IOs for all other sessions except current.*/ 1257 if (!wait_event_interruptible_timeout(qedi_conn->wait_queue, 1258 (qedi_conn->cmd_cleanup_req == 1259 qedi_conn->cmd_cleanup_cmpl) || 1260 test_bit(QEDI_IN_RECOVERY, 1261 &qedi->flags), 1262 5 * HZ)) { 1263 iscsi_host_for_each_session(qedi->shost, 1264 qedi_mark_device_available); 1265 return -1; 1266 } 1267 1268 iscsi_host_for_each_session(qedi->shost, 1269 qedi_mark_device_available); 1270 1271 return 0; 1272 } 1273 1274 void qedi_clearsq(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn, 1275 struct iscsi_task *task) 1276 { 1277 struct qedi_endpoint *qedi_ep; 1278 int rval; 1279 1280 qedi_ep = qedi_conn->ep; 1281 qedi_conn->cmd_cleanup_req = 0; 1282 qedi_conn->cmd_cleanup_cmpl = 0; 1283 1284 if (!qedi_ep) { 1285 QEDI_WARN(&qedi->dbg_ctx, 1286 "Cannot proceed, ep already disconnected, cid=0x%x\n", 1287 qedi_conn->iscsi_conn_id); 1288 return; 1289 } 1290 1291 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1292 "Clearing SQ for cid=0x%x, conn=%p, ep=%p\n", 1293 qedi_conn->iscsi_conn_id, qedi_conn, qedi_ep); 1294 1295 qedi_ops->clear_sq(qedi->cdev, qedi_ep->handle); 1296 1297 rval = qedi_cleanup_all_io(qedi, qedi_conn, task, true); 1298 if (rval) { 1299 QEDI_ERR(&qedi->dbg_ctx, 1300 "fatal error, need hard reset, cid=0x%x\n", 1301 qedi_conn->iscsi_conn_id); 1302 WARN_ON(1); 1303 } 1304 } 1305 1306 static int qedi_wait_for_cleanup_request(struct qedi_ctx *qedi, 1307 struct qedi_conn *qedi_conn, 1308 struct iscsi_task *task, 1309 struct qedi_cmd *qedi_cmd, 1310 struct qedi_work_map *list_work) 1311 { 1312 struct qedi_cmd *cmd = (struct qedi_cmd *)task->dd_data; 1313 int wait; 1314 1315 wait = wait_event_interruptible_timeout(qedi_conn->wait_queue, 1316 ((qedi_cmd->state == 1317 CLEANUP_RECV) || 1318 ((qedi_cmd->type == TYPEIO) && 1319 (cmd->state == 1320 RESPONSE_RECEIVED))), 1321 5 * HZ); 1322 if (!wait) { 1323 qedi_cmd->state = CLEANUP_WAIT_FAILED; 1324 1325 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1326 "Cleanup timedout tid=0x%x, issue connection recovery, cid=0x%x\n", 1327 cmd->task_id, qedi_conn->iscsi_conn_id); 1328 1329 return -1; 1330 } 1331 return 0; 1332 } 1333 1334 static void qedi_abort_work(struct work_struct *work) 1335 { 1336 struct qedi_cmd *qedi_cmd = 1337 container_of(work, struct qedi_cmd, tmf_work); 1338 struct qedi_conn *qedi_conn = qedi_cmd->conn; 1339 struct qedi_ctx *qedi = qedi_conn->qedi; 1340 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 1341 struct qedi_work_map *list_work = NULL; 1342 struct iscsi_task *mtask; 1343 struct qedi_cmd *cmd; 1344 struct iscsi_task *ctask; 1345 struct iscsi_tm *tmf_hdr; 1346 s16 rval = 0; 1347 1348 mtask = qedi_cmd->task; 1349 tmf_hdr = (struct iscsi_tm *)mtask->hdr; 1350 1351 spin_lock_bh(&conn->session->back_lock); 1352 ctask = iscsi_itt_to_ctask(conn, tmf_hdr->rtt); 1353 if (!ctask) { 1354 spin_unlock_bh(&conn->session->back_lock); 1355 QEDI_ERR(&qedi->dbg_ctx, "Invalid RTT. Letting abort timeout.\n"); 1356 goto clear_cleanup; 1357 } 1358 1359 if (iscsi_task_is_completed(ctask)) { 1360 spin_unlock_bh(&conn->session->back_lock); 1361 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1362 "Task already completed\n"); 1363 /* 1364 * We have to still send the TMF because libiscsi needs the 1365 * response to avoid a timeout. 1366 */ 1367 goto send_tmf; 1368 } 1369 spin_unlock_bh(&conn->session->back_lock); 1370 1371 cmd = (struct qedi_cmd *)ctask->dd_data; 1372 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1373 "Abort tmf rtt=0x%x, cmd itt=0x%x, cmd tid=0x%x, cid=0x%x\n", 1374 get_itt(tmf_hdr->rtt), get_itt(ctask->itt), cmd->task_id, 1375 qedi_conn->iscsi_conn_id); 1376 1377 if (qedi_do_not_recover) { 1378 QEDI_ERR(&qedi->dbg_ctx, "DONT SEND CLEANUP/ABORT %d\n", 1379 qedi_do_not_recover); 1380 goto clear_cleanup; 1381 } 1382 1383 list_work = kzalloc(sizeof(*list_work), GFP_NOIO); 1384 if (!list_work) { 1385 QEDI_ERR(&qedi->dbg_ctx, "Memory allocation failed\n"); 1386 goto clear_cleanup; 1387 } 1388 1389 qedi_cmd->type = TYPEIO; 1390 qedi_cmd->state = CLEANUP_WAIT; 1391 list_work->qedi_cmd = qedi_cmd; 1392 list_work->rtid = cmd->task_id; 1393 list_work->state = QEDI_WORK_SCHEDULED; 1394 list_work->ctask = ctask; 1395 qedi_cmd->list_tmf_work = list_work; 1396 1397 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1398 "Queue tmf work=%p, list node=%p, cid=0x%x, tmf flags=0x%x\n", 1399 list_work->ptr_tmf_work, list_work, qedi_conn->iscsi_conn_id, 1400 tmf_hdr->flags); 1401 1402 spin_lock_bh(&qedi_conn->tmf_work_lock); 1403 list_add_tail(&list_work->list, &qedi_conn->tmf_work_list); 1404 spin_unlock_bh(&qedi_conn->tmf_work_lock); 1405 1406 qedi_iscsi_cleanup_task(ctask, false); 1407 1408 rval = qedi_wait_for_cleanup_request(qedi, qedi_conn, ctask, qedi_cmd, 1409 list_work); 1410 if (rval == -1) { 1411 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1412 "FW cleanup got escalated, cid=0x%x\n", 1413 qedi_conn->iscsi_conn_id); 1414 goto ldel_exit; 1415 } 1416 1417 send_tmf: 1418 send_iscsi_tmf(qedi_conn, qedi_cmd->task, ctask); 1419 goto clear_cleanup; 1420 1421 ldel_exit: 1422 spin_lock_bh(&qedi_conn->tmf_work_lock); 1423 if (qedi_cmd->list_tmf_work) { 1424 list_del_init(&list_work->list); 1425 qedi_cmd->list_tmf_work = NULL; 1426 kfree(list_work); 1427 } 1428 spin_unlock_bh(&qedi_conn->tmf_work_lock); 1429 1430 spin_lock(&qedi_conn->list_lock); 1431 if (likely(cmd->io_cmd_in_list)) { 1432 cmd->io_cmd_in_list = false; 1433 list_del_init(&cmd->io_cmd); 1434 qedi_conn->active_cmd_count--; 1435 } 1436 spin_unlock(&qedi_conn->list_lock); 1437 1438 clear_cleanup: 1439 spin_lock(&qedi_conn->tmf_work_lock); 1440 qedi_conn->fw_cleanup_works--; 1441 spin_unlock(&qedi_conn->tmf_work_lock); 1442 } 1443 1444 static int send_iscsi_tmf(struct qedi_conn *qedi_conn, struct iscsi_task *mtask, 1445 struct iscsi_task *ctask) 1446 { 1447 struct iscsi_tmf_request_hdr tmf_pdu_header; 1448 struct iscsi_task_params task_params; 1449 struct qedi_ctx *qedi = qedi_conn->qedi; 1450 struct e4_iscsi_task_context *fw_task_ctx; 1451 struct iscsi_tm *tmf_hdr; 1452 struct qedi_cmd *qedi_cmd; 1453 struct qedi_cmd *cmd; 1454 struct qedi_endpoint *ep; 1455 u32 scsi_lun[2]; 1456 s16 tid = 0; 1457 u16 sq_idx = 0; 1458 1459 tmf_hdr = (struct iscsi_tm *)mtask->hdr; 1460 qedi_cmd = (struct qedi_cmd *)mtask->dd_data; 1461 ep = qedi_conn->ep; 1462 if (!ep) 1463 return -ENODEV; 1464 1465 tid = qedi_get_task_idx(qedi); 1466 if (tid == -1) 1467 return -ENOMEM; 1468 1469 fw_task_ctx = 1470 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1471 tid); 1472 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1473 1474 qedi_cmd->task_id = tid; 1475 1476 memset(&task_params, 0, sizeof(task_params)); 1477 memset(&tmf_pdu_header, 0, sizeof(tmf_pdu_header)); 1478 1479 /* Update header info */ 1480 qedi_update_itt_map(qedi, tid, mtask->itt, qedi_cmd); 1481 tmf_pdu_header.itt = qedi_set_itt(tid, get_itt(mtask->itt)); 1482 tmf_pdu_header.cmd_sn = be32_to_cpu(tmf_hdr->cmdsn); 1483 1484 memcpy(scsi_lun, &tmf_hdr->lun, sizeof(struct scsi_lun)); 1485 tmf_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); 1486 tmf_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); 1487 1488 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1489 ISCSI_TM_FUNC_ABORT_TASK) { 1490 cmd = (struct qedi_cmd *)ctask->dd_data; 1491 tmf_pdu_header.rtt = 1492 qedi_set_itt(cmd->task_id, 1493 get_itt(tmf_hdr->rtt)); 1494 } else { 1495 tmf_pdu_header.rtt = ISCSI_RESERVED_TAG; 1496 } 1497 1498 tmf_pdu_header.opcode = tmf_hdr->opcode; 1499 tmf_pdu_header.function = tmf_hdr->flags; 1500 tmf_pdu_header.hdr_second_dword = ntoh24(tmf_hdr->dlength); 1501 tmf_pdu_header.ref_cmd_sn = be32_to_cpu(tmf_hdr->refcmdsn); 1502 1503 /* Fill fw input params */ 1504 task_params.context = fw_task_ctx; 1505 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1506 task_params.itid = tid; 1507 task_params.cq_rss_number = 0; 1508 task_params.tx_io_size = 0; 1509 task_params.rx_io_size = 0; 1510 1511 sq_idx = qedi_get_wqe_idx(qedi_conn); 1512 task_params.sqe = &ep->sq[sq_idx]; 1513 1514 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1515 init_initiator_tmf_request_task(&task_params, &tmf_pdu_header); 1516 1517 spin_lock(&qedi_conn->list_lock); 1518 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1519 qedi_cmd->io_cmd_in_list = true; 1520 qedi_conn->active_cmd_count++; 1521 spin_unlock(&qedi_conn->list_lock); 1522 1523 qedi_ring_doorbell(qedi_conn); 1524 return 0; 1525 } 1526 1527 int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn, struct iscsi_task *mtask) 1528 { 1529 struct iscsi_tm *tmf_hdr = (struct iscsi_tm *)mtask->hdr; 1530 struct qedi_cmd *qedi_cmd = mtask->dd_data; 1531 struct qedi_ctx *qedi = qedi_conn->qedi; 1532 int rc = 0; 1533 1534 switch (tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) { 1535 case ISCSI_TM_FUNC_ABORT_TASK: 1536 spin_lock(&qedi_conn->tmf_work_lock); 1537 qedi_conn->fw_cleanup_works++; 1538 spin_unlock(&qedi_conn->tmf_work_lock); 1539 1540 INIT_WORK(&qedi_cmd->tmf_work, qedi_abort_work); 1541 queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work); 1542 break; 1543 case ISCSI_TM_FUNC_LOGICAL_UNIT_RESET: 1544 case ISCSI_TM_FUNC_TARGET_WARM_RESET: 1545 case ISCSI_TM_FUNC_TARGET_COLD_RESET: 1546 rc = send_iscsi_tmf(qedi_conn, mtask, NULL); 1547 break; 1548 default: 1549 QEDI_ERR(&qedi->dbg_ctx, "Invalid tmf, cid=0x%x\n", 1550 qedi_conn->iscsi_conn_id); 1551 return -EINVAL; 1552 } 1553 1554 return rc; 1555 } 1556 1557 int qedi_send_iscsi_text(struct qedi_conn *qedi_conn, 1558 struct iscsi_task *task) 1559 { 1560 struct iscsi_text_request_hdr text_request_pdu_header; 1561 struct scsi_sgl_task_params tx_sgl_task_params; 1562 struct scsi_sgl_task_params rx_sgl_task_params; 1563 struct iscsi_task_params task_params; 1564 struct e4_iscsi_task_context *fw_task_ctx; 1565 struct qedi_ctx *qedi = qedi_conn->qedi; 1566 struct iscsi_text *text_hdr; 1567 struct scsi_sge *req_sge = NULL; 1568 struct scsi_sge *resp_sge = NULL; 1569 struct qedi_cmd *qedi_cmd; 1570 struct qedi_endpoint *ep; 1571 s16 tid = 0; 1572 u16 sq_idx = 0; 1573 int rval = 0; 1574 1575 req_sge = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1576 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1577 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1578 text_hdr = (struct iscsi_text *)task->hdr; 1579 ep = qedi_conn->ep; 1580 1581 tid = qedi_get_task_idx(qedi); 1582 if (tid == -1) 1583 return -ENOMEM; 1584 1585 fw_task_ctx = 1586 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1587 tid); 1588 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1589 1590 qedi_cmd->task_id = tid; 1591 1592 memset(&task_params, 0, sizeof(task_params)); 1593 memset(&text_request_pdu_header, 0, sizeof(text_request_pdu_header)); 1594 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1595 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1596 1597 /* Update header info */ 1598 text_request_pdu_header.opcode = text_hdr->opcode; 1599 text_request_pdu_header.flags_attr = text_hdr->flags; 1600 1601 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1602 text_request_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1603 text_request_pdu_header.ttt = text_hdr->ttt; 1604 text_request_pdu_header.cmd_sn = be32_to_cpu(text_hdr->cmdsn); 1605 text_request_pdu_header.exp_stat_sn = be32_to_cpu(text_hdr->exp_statsn); 1606 text_request_pdu_header.hdr_second_dword = ntoh24(text_hdr->dlength); 1607 1608 /* Fill tx AHS and rx buffer */ 1609 tx_sgl_task_params.sgl = 1610 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1611 tx_sgl_task_params.sgl_phys_addr.lo = 1612 (u32)(qedi_conn->gen_pdu.req_dma_addr); 1613 tx_sgl_task_params.sgl_phys_addr.hi = 1614 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); 1615 tx_sgl_task_params.total_buffer_size = req_sge->sge_len; 1616 tx_sgl_task_params.num_sges = 1; 1617 1618 rx_sgl_task_params.sgl = 1619 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1620 rx_sgl_task_params.sgl_phys_addr.lo = 1621 (u32)(qedi_conn->gen_pdu.resp_dma_addr); 1622 rx_sgl_task_params.sgl_phys_addr.hi = 1623 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); 1624 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; 1625 rx_sgl_task_params.num_sges = 1; 1626 1627 /* Fill fw input params */ 1628 task_params.context = fw_task_ctx; 1629 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1630 task_params.itid = tid; 1631 task_params.cq_rss_number = 0; 1632 task_params.tx_io_size = ntoh24(text_hdr->dlength); 1633 task_params.rx_io_size = resp_sge->sge_len; 1634 1635 sq_idx = qedi_get_wqe_idx(qedi_conn); 1636 task_params.sqe = &ep->sq[sq_idx]; 1637 1638 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1639 rval = init_initiator_text_request_task(&task_params, 1640 &text_request_pdu_header, 1641 &tx_sgl_task_params, 1642 &rx_sgl_task_params); 1643 if (rval) 1644 return -1; 1645 1646 spin_lock(&qedi_conn->list_lock); 1647 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1648 qedi_cmd->io_cmd_in_list = true; 1649 qedi_conn->active_cmd_count++; 1650 spin_unlock(&qedi_conn->list_lock); 1651 1652 qedi_ring_doorbell(qedi_conn); 1653 return 0; 1654 } 1655 1656 int qedi_send_iscsi_nopout(struct qedi_conn *qedi_conn, 1657 struct iscsi_task *task, 1658 char *datap, int data_len, int unsol) 1659 { 1660 struct iscsi_nop_out_hdr nop_out_pdu_header; 1661 struct scsi_sgl_task_params tx_sgl_task_params; 1662 struct scsi_sgl_task_params rx_sgl_task_params; 1663 struct iscsi_task_params task_params; 1664 struct qedi_ctx *qedi = qedi_conn->qedi; 1665 struct e4_iscsi_task_context *fw_task_ctx; 1666 struct iscsi_nopout *nopout_hdr; 1667 struct scsi_sge *resp_sge = NULL; 1668 struct qedi_cmd *qedi_cmd; 1669 struct qedi_endpoint *ep; 1670 u32 scsi_lun[2]; 1671 s16 tid = 0; 1672 u16 sq_idx = 0; 1673 int rval = 0; 1674 1675 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1676 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1677 nopout_hdr = (struct iscsi_nopout *)task->hdr; 1678 ep = qedi_conn->ep; 1679 1680 tid = qedi_get_task_idx(qedi); 1681 if (tid == -1) 1682 return -ENOMEM; 1683 1684 fw_task_ctx = 1685 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1686 tid); 1687 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1688 1689 qedi_cmd->task_id = tid; 1690 1691 memset(&task_params, 0, sizeof(task_params)); 1692 memset(&nop_out_pdu_header, 0, sizeof(nop_out_pdu_header)); 1693 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1694 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1695 1696 /* Update header info */ 1697 nop_out_pdu_header.opcode = nopout_hdr->opcode; 1698 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_CONST1, 1); 1699 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_RSRV, 0); 1700 1701 memcpy(scsi_lun, &nopout_hdr->lun, sizeof(struct scsi_lun)); 1702 nop_out_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); 1703 nop_out_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); 1704 nop_out_pdu_header.cmd_sn = be32_to_cpu(nopout_hdr->cmdsn); 1705 nop_out_pdu_header.exp_stat_sn = be32_to_cpu(nopout_hdr->exp_statsn); 1706 1707 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1708 1709 if (nopout_hdr->ttt != ISCSI_TTT_ALL_ONES) { 1710 nop_out_pdu_header.itt = be32_to_cpu(nopout_hdr->itt); 1711 nop_out_pdu_header.ttt = be32_to_cpu(nopout_hdr->ttt); 1712 } else { 1713 nop_out_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1714 nop_out_pdu_header.ttt = ISCSI_TTT_ALL_ONES; 1715 1716 spin_lock(&qedi_conn->list_lock); 1717 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1718 qedi_cmd->io_cmd_in_list = true; 1719 qedi_conn->active_cmd_count++; 1720 spin_unlock(&qedi_conn->list_lock); 1721 } 1722 1723 /* Fill tx AHS and rx buffer */ 1724 if (data_len) { 1725 tx_sgl_task_params.sgl = 1726 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1727 tx_sgl_task_params.sgl_phys_addr.lo = 1728 (u32)(qedi_conn->gen_pdu.req_dma_addr); 1729 tx_sgl_task_params.sgl_phys_addr.hi = 1730 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); 1731 tx_sgl_task_params.total_buffer_size = data_len; 1732 tx_sgl_task_params.num_sges = 1; 1733 1734 rx_sgl_task_params.sgl = 1735 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1736 rx_sgl_task_params.sgl_phys_addr.lo = 1737 (u32)(qedi_conn->gen_pdu.resp_dma_addr); 1738 rx_sgl_task_params.sgl_phys_addr.hi = 1739 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); 1740 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; 1741 rx_sgl_task_params.num_sges = 1; 1742 } 1743 1744 /* Fill fw input params */ 1745 task_params.context = fw_task_ctx; 1746 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1747 task_params.itid = tid; 1748 task_params.cq_rss_number = 0; 1749 task_params.tx_io_size = data_len; 1750 task_params.rx_io_size = resp_sge->sge_len; 1751 1752 sq_idx = qedi_get_wqe_idx(qedi_conn); 1753 task_params.sqe = &ep->sq[sq_idx]; 1754 1755 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1756 rval = init_initiator_nop_out_task(&task_params, 1757 &nop_out_pdu_header, 1758 &tx_sgl_task_params, 1759 &rx_sgl_task_params); 1760 if (rval) 1761 return -1; 1762 1763 qedi_ring_doorbell(qedi_conn); 1764 return 0; 1765 } 1766 1767 static int qedi_split_bd(struct qedi_cmd *cmd, u64 addr, int sg_len, 1768 int bd_index) 1769 { 1770 struct scsi_sge *bd = cmd->io_tbl.sge_tbl; 1771 int frag_size, sg_frags; 1772 1773 sg_frags = 0; 1774 1775 while (sg_len) { 1776 if (addr % QEDI_PAGE_SIZE) 1777 frag_size = 1778 (QEDI_PAGE_SIZE - (addr % QEDI_PAGE_SIZE)); 1779 else 1780 frag_size = (sg_len > QEDI_BD_SPLIT_SZ) ? 0 : 1781 (sg_len % QEDI_BD_SPLIT_SZ); 1782 1783 if (frag_size == 0) 1784 frag_size = QEDI_BD_SPLIT_SZ; 1785 1786 bd[bd_index + sg_frags].sge_addr.lo = (addr & 0xffffffff); 1787 bd[bd_index + sg_frags].sge_addr.hi = (addr >> 32); 1788 bd[bd_index + sg_frags].sge_len = (u16)frag_size; 1789 QEDI_INFO(&cmd->conn->qedi->dbg_ctx, QEDI_LOG_IO, 1790 "split sge %d: addr=%llx, len=%x", 1791 (bd_index + sg_frags), addr, frag_size); 1792 1793 addr += (u64)frag_size; 1794 sg_frags++; 1795 sg_len -= frag_size; 1796 } 1797 return sg_frags; 1798 } 1799 1800 static int qedi_map_scsi_sg(struct qedi_ctx *qedi, struct qedi_cmd *cmd) 1801 { 1802 struct scsi_cmnd *sc = cmd->scsi_cmd; 1803 struct scsi_sge *bd = cmd->io_tbl.sge_tbl; 1804 struct scatterlist *sg; 1805 int byte_count = 0; 1806 int bd_count = 0; 1807 int sg_count; 1808 int sg_len; 1809 int sg_frags; 1810 u64 addr, end_addr; 1811 int i; 1812 1813 WARN_ON(scsi_sg_count(sc) > QEDI_ISCSI_MAX_BDS_PER_CMD); 1814 1815 sg_count = dma_map_sg(&qedi->pdev->dev, scsi_sglist(sc), 1816 scsi_sg_count(sc), sc->sc_data_direction); 1817 1818 /* 1819 * New condition to send single SGE as cached-SGL. 1820 * Single SGE with length less than 64K. 1821 */ 1822 sg = scsi_sglist(sc); 1823 if ((sg_count == 1) && (sg_dma_len(sg) <= MAX_SGLEN_FOR_CACHESGL)) { 1824 sg_len = sg_dma_len(sg); 1825 addr = (u64)sg_dma_address(sg); 1826 1827 bd[bd_count].sge_addr.lo = (addr & 0xffffffff); 1828 bd[bd_count].sge_addr.hi = (addr >> 32); 1829 bd[bd_count].sge_len = (u16)sg_len; 1830 1831 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 1832 "single-cached-sgl: bd_count:%d addr=%llx, len=%x", 1833 sg_count, addr, sg_len); 1834 1835 return ++bd_count; 1836 } 1837 1838 scsi_for_each_sg(sc, sg, sg_count, i) { 1839 sg_len = sg_dma_len(sg); 1840 addr = (u64)sg_dma_address(sg); 1841 end_addr = (addr + sg_len); 1842 1843 /* 1844 * first sg elem in the 'list', 1845 * check if end addr is page-aligned. 1846 */ 1847 if ((i == 0) && (sg_count > 1) && (end_addr % QEDI_PAGE_SIZE)) 1848 cmd->use_slowpath = true; 1849 1850 /* 1851 * last sg elem in the 'list', 1852 * check if start addr is page-aligned. 1853 */ 1854 else if ((i == (sg_count - 1)) && 1855 (sg_count > 1) && (addr % QEDI_PAGE_SIZE)) 1856 cmd->use_slowpath = true; 1857 1858 /* 1859 * middle sg elements in list, 1860 * check if start and end addr is page-aligned 1861 */ 1862 else if ((i != 0) && (i != (sg_count - 1)) && 1863 ((addr % QEDI_PAGE_SIZE) || 1864 (end_addr % QEDI_PAGE_SIZE))) 1865 cmd->use_slowpath = true; 1866 1867 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "sg[%d] size=0x%x", 1868 i, sg_len); 1869 1870 if (sg_len > QEDI_BD_SPLIT_SZ) { 1871 sg_frags = qedi_split_bd(cmd, addr, sg_len, bd_count); 1872 } else { 1873 sg_frags = 1; 1874 bd[bd_count].sge_addr.lo = addr & 0xffffffff; 1875 bd[bd_count].sge_addr.hi = addr >> 32; 1876 bd[bd_count].sge_len = sg_len; 1877 } 1878 byte_count += sg_len; 1879 bd_count += sg_frags; 1880 } 1881 1882 if (byte_count != scsi_bufflen(sc)) 1883 QEDI_ERR(&qedi->dbg_ctx, 1884 "byte_count = %d != scsi_bufflen = %d\n", byte_count, 1885 scsi_bufflen(sc)); 1886 else 1887 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "byte_count = %d\n", 1888 byte_count); 1889 1890 WARN_ON(byte_count != scsi_bufflen(sc)); 1891 1892 return bd_count; 1893 } 1894 1895 static void qedi_iscsi_map_sg_list(struct qedi_cmd *cmd) 1896 { 1897 int bd_count; 1898 struct scsi_cmnd *sc = cmd->scsi_cmd; 1899 1900 if (scsi_sg_count(sc)) { 1901 bd_count = qedi_map_scsi_sg(cmd->conn->qedi, cmd); 1902 if (bd_count == 0) 1903 return; 1904 } else { 1905 struct scsi_sge *bd = cmd->io_tbl.sge_tbl; 1906 1907 bd[0].sge_addr.lo = 0; 1908 bd[0].sge_addr.hi = 0; 1909 bd[0].sge_len = 0; 1910 bd_count = 0; 1911 } 1912 cmd->io_tbl.sge_valid = bd_count; 1913 } 1914 1915 static void qedi_cpy_scsi_cdb(struct scsi_cmnd *sc, u32 *dstp) 1916 { 1917 u32 dword; 1918 int lpcnt; 1919 u8 *srcp; 1920 1921 lpcnt = sc->cmd_len / sizeof(dword); 1922 srcp = (u8 *)sc->cmnd; 1923 while (lpcnt--) { 1924 memcpy(&dword, (const void *)srcp, 4); 1925 *dstp = cpu_to_be32(dword); 1926 srcp += 4; 1927 dstp++; 1928 } 1929 if (sc->cmd_len & 0x3) { 1930 dword = (u32)srcp[0] | ((u32)srcp[1] << 8); 1931 *dstp = cpu_to_be32(dword); 1932 } 1933 } 1934 1935 void qedi_trace_io(struct qedi_ctx *qedi, struct iscsi_task *task, 1936 u16 tid, int8_t direction) 1937 { 1938 struct qedi_io_log *io_log; 1939 struct iscsi_conn *conn = task->conn; 1940 struct qedi_conn *qedi_conn = conn->dd_data; 1941 struct scsi_cmnd *sc_cmd = task->sc; 1942 unsigned long flags; 1943 1944 spin_lock_irqsave(&qedi->io_trace_lock, flags); 1945 1946 io_log = &qedi->io_trace_buf[qedi->io_trace_idx]; 1947 io_log->direction = direction; 1948 io_log->task_id = tid; 1949 io_log->cid = qedi_conn->iscsi_conn_id; 1950 io_log->lun = sc_cmd->device->lun; 1951 io_log->op = sc_cmd->cmnd[0]; 1952 io_log->lba[0] = sc_cmd->cmnd[2]; 1953 io_log->lba[1] = sc_cmd->cmnd[3]; 1954 io_log->lba[2] = sc_cmd->cmnd[4]; 1955 io_log->lba[3] = sc_cmd->cmnd[5]; 1956 io_log->bufflen = scsi_bufflen(sc_cmd); 1957 io_log->sg_count = scsi_sg_count(sc_cmd); 1958 io_log->fast_sgs = qedi->fast_sgls; 1959 io_log->cached_sgs = qedi->cached_sgls; 1960 io_log->slow_sgs = qedi->slow_sgls; 1961 io_log->cached_sge = qedi->use_cached_sge; 1962 io_log->slow_sge = qedi->use_slow_sge; 1963 io_log->fast_sge = qedi->use_fast_sge; 1964 io_log->result = sc_cmd->result; 1965 io_log->jiffies = jiffies; 1966 io_log->blk_req_cpu = smp_processor_id(); 1967 1968 if (direction == QEDI_IO_TRACE_REQ) { 1969 /* For requests we only care about the submission CPU */ 1970 io_log->req_cpu = smp_processor_id() % qedi->num_queues; 1971 io_log->intr_cpu = 0; 1972 io_log->blk_rsp_cpu = 0; 1973 } else if (direction == QEDI_IO_TRACE_RSP) { 1974 io_log->req_cpu = smp_processor_id() % qedi->num_queues; 1975 io_log->intr_cpu = qedi->intr_cpu; 1976 io_log->blk_rsp_cpu = smp_processor_id(); 1977 } 1978 1979 qedi->io_trace_idx++; 1980 if (qedi->io_trace_idx == QEDI_IO_TRACE_SIZE) 1981 qedi->io_trace_idx = 0; 1982 1983 qedi->use_cached_sge = false; 1984 qedi->use_slow_sge = false; 1985 qedi->use_fast_sge = false; 1986 1987 spin_unlock_irqrestore(&qedi->io_trace_lock, flags); 1988 } 1989 1990 int qedi_iscsi_send_ioreq(struct iscsi_task *task) 1991 { 1992 struct iscsi_conn *conn = task->conn; 1993 struct iscsi_session *session = conn->session; 1994 struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session); 1995 struct qedi_ctx *qedi = iscsi_host_priv(shost); 1996 struct qedi_conn *qedi_conn = conn->dd_data; 1997 struct qedi_cmd *cmd = task->dd_data; 1998 struct scsi_cmnd *sc = task->sc; 1999 struct iscsi_cmd_hdr cmd_pdu_header; 2000 struct scsi_sgl_task_params tx_sgl_task_params; 2001 struct scsi_sgl_task_params rx_sgl_task_params; 2002 struct scsi_sgl_task_params *prx_sgl = NULL; 2003 struct scsi_sgl_task_params *ptx_sgl = NULL; 2004 struct iscsi_task_params task_params; 2005 struct iscsi_conn_params conn_params; 2006 struct scsi_initiator_cmd_params cmd_params; 2007 struct e4_iscsi_task_context *fw_task_ctx; 2008 struct iscsi_cls_conn *cls_conn; 2009 struct iscsi_scsi_req *hdr = (struct iscsi_scsi_req *)task->hdr; 2010 enum iscsi_task_type task_type = MAX_ISCSI_TASK_TYPE; 2011 struct qedi_endpoint *ep; 2012 u32 scsi_lun[2]; 2013 s16 tid = 0; 2014 u16 sq_idx = 0; 2015 u16 cq_idx; 2016 int rval = 0; 2017 2018 ep = qedi_conn->ep; 2019 cls_conn = qedi_conn->cls_conn; 2020 conn = cls_conn->dd_data; 2021 2022 qedi_iscsi_map_sg_list(cmd); 2023 int_to_scsilun(sc->device->lun, (struct scsi_lun *)scsi_lun); 2024 2025 tid = qedi_get_task_idx(qedi); 2026 if (tid == -1) 2027 return -ENOMEM; 2028 2029 fw_task_ctx = 2030 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 2031 tid); 2032 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 2033 2034 cmd->task_id = tid; 2035 2036 memset(&task_params, 0, sizeof(task_params)); 2037 memset(&cmd_pdu_header, 0, sizeof(cmd_pdu_header)); 2038 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 2039 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 2040 memset(&conn_params, 0, sizeof(conn_params)); 2041 memset(&cmd_params, 0, sizeof(cmd_params)); 2042 2043 cq_idx = smp_processor_id() % qedi->num_queues; 2044 /* Update header info */ 2045 SET_FIELD(cmd_pdu_header.flags_attr, ISCSI_CMD_HDR_ATTR, 2046 ISCSI_ATTR_SIMPLE); 2047 if (hdr->cdb[0] != TEST_UNIT_READY) { 2048 if (sc->sc_data_direction == DMA_TO_DEVICE) { 2049 SET_FIELD(cmd_pdu_header.flags_attr, 2050 ISCSI_CMD_HDR_WRITE, 1); 2051 task_type = ISCSI_TASK_TYPE_INITIATOR_WRITE; 2052 } else { 2053 SET_FIELD(cmd_pdu_header.flags_attr, 2054 ISCSI_CMD_HDR_READ, 1); 2055 task_type = ISCSI_TASK_TYPE_INITIATOR_READ; 2056 } 2057 } 2058 2059 cmd_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); 2060 cmd_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); 2061 2062 qedi_update_itt_map(qedi, tid, task->itt, cmd); 2063 cmd_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 2064 cmd_pdu_header.expected_transfer_length = cpu_to_be32(hdr->data_length); 2065 cmd_pdu_header.hdr_second_dword = ntoh24(hdr->dlength); 2066 cmd_pdu_header.cmd_sn = be32_to_cpu(hdr->cmdsn); 2067 cmd_pdu_header.hdr_first_byte = hdr->opcode; 2068 qedi_cpy_scsi_cdb(sc, (u32 *)cmd_pdu_header.cdb); 2069 2070 /* Fill tx AHS and rx buffer */ 2071 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) { 2072 tx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl; 2073 tx_sgl_task_params.sgl_phys_addr.lo = 2074 (u32)(cmd->io_tbl.sge_tbl_dma); 2075 tx_sgl_task_params.sgl_phys_addr.hi = 2076 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32); 2077 tx_sgl_task_params.total_buffer_size = scsi_bufflen(sc); 2078 tx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid; 2079 if (cmd->use_slowpath) 2080 tx_sgl_task_params.small_mid_sge = true; 2081 } else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) { 2082 rx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl; 2083 rx_sgl_task_params.sgl_phys_addr.lo = 2084 (u32)(cmd->io_tbl.sge_tbl_dma); 2085 rx_sgl_task_params.sgl_phys_addr.hi = 2086 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32); 2087 rx_sgl_task_params.total_buffer_size = scsi_bufflen(sc); 2088 rx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid; 2089 } 2090 2091 /* Add conn param */ 2092 conn_params.first_burst_length = conn->session->first_burst; 2093 conn_params.max_send_pdu_length = conn->max_xmit_dlength; 2094 conn_params.max_burst_length = conn->session->max_burst; 2095 if (conn->session->initial_r2t_en) 2096 conn_params.initial_r2t = true; 2097 if (conn->session->imm_data_en) 2098 conn_params.immediate_data = true; 2099 2100 /* Add cmd params */ 2101 cmd_params.sense_data_buffer_phys_addr.lo = (u32)cmd->sense_buffer_dma; 2102 cmd_params.sense_data_buffer_phys_addr.hi = 2103 (u32)((u64)cmd->sense_buffer_dma >> 32); 2104 /* Fill fw input params */ 2105 task_params.context = fw_task_ctx; 2106 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 2107 task_params.itid = tid; 2108 task_params.cq_rss_number = cq_idx; 2109 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) 2110 task_params.tx_io_size = scsi_bufflen(sc); 2111 else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) 2112 task_params.rx_io_size = scsi_bufflen(sc); 2113 2114 sq_idx = qedi_get_wqe_idx(qedi_conn); 2115 task_params.sqe = &ep->sq[sq_idx]; 2116 2117 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 2118 "%s: %s-SGL: sg_len=0x%x num_sges=0x%x first-sge-lo=0x%x first-sge-hi=0x%x\n", 2119 (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) ? 2120 "Write " : "Read ", (cmd->io_tbl.sge_valid == 1) ? 2121 "Single" : (cmd->use_slowpath ? "SLOW" : "FAST"), 2122 (u16)cmd->io_tbl.sge_valid, scsi_bufflen(sc), 2123 (u32)(cmd->io_tbl.sge_tbl_dma), 2124 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32)); 2125 2126 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 2127 2128 if (task_params.tx_io_size != 0) 2129 ptx_sgl = &tx_sgl_task_params; 2130 if (task_params.rx_io_size != 0) 2131 prx_sgl = &rx_sgl_task_params; 2132 2133 rval = init_initiator_rw_iscsi_task(&task_params, &conn_params, 2134 &cmd_params, &cmd_pdu_header, 2135 ptx_sgl, prx_sgl, 2136 NULL); 2137 if (rval) 2138 return -1; 2139 2140 spin_lock(&qedi_conn->list_lock); 2141 list_add_tail(&cmd->io_cmd, &qedi_conn->active_cmd_list); 2142 cmd->io_cmd_in_list = true; 2143 qedi_conn->active_cmd_count++; 2144 spin_unlock(&qedi_conn->list_lock); 2145 2146 qedi_ring_doorbell(qedi_conn); 2147 return 0; 2148 } 2149 2150 int qedi_iscsi_cleanup_task(struct iscsi_task *task, bool mark_cmd_node_deleted) 2151 { 2152 struct iscsi_task_params task_params; 2153 struct qedi_endpoint *ep; 2154 struct iscsi_conn *conn = task->conn; 2155 struct qedi_conn *qedi_conn = conn->dd_data; 2156 struct qedi_cmd *cmd = task->dd_data; 2157 u16 sq_idx = 0; 2158 int rval = 0; 2159 2160 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 2161 "issue cleanup tid=0x%x itt=0x%x task_state=%d cmd_state=0%x cid=0x%x\n", 2162 cmd->task_id, get_itt(task->itt), task->state, 2163 cmd->state, qedi_conn->iscsi_conn_id); 2164 2165 memset(&task_params, 0, sizeof(task_params)); 2166 ep = qedi_conn->ep; 2167 2168 sq_idx = qedi_get_wqe_idx(qedi_conn); 2169 2170 task_params.sqe = &ep->sq[sq_idx]; 2171 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 2172 task_params.itid = cmd->task_id; 2173 2174 rval = init_cleanup_task(&task_params); 2175 if (rval) 2176 return rval; 2177 2178 qedi_ring_doorbell(qedi_conn); 2179 return 0; 2180 } 2181