1 /* 2 * QLogic iSCSI Offload Driver 3 * Copyright (c) 2016 Cavium Inc. 4 * 5 * This software is available under the terms of the GNU General Public License 6 * (GPL) Version 2, available from the file COPYING in the main directory of 7 * this source tree. 8 */ 9 10 #include <linux/blkdev.h> 11 #include <scsi/scsi_tcq.h> 12 #include <linux/delay.h> 13 14 #include "qedi.h" 15 #include "qedi_iscsi.h" 16 #include "qedi_gbl.h" 17 #include "qedi_fw_iscsi.h" 18 #include "qedi_fw_scsi.h" 19 20 static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn, 21 struct iscsi_task *mtask); 22 23 void qedi_iscsi_unmap_sg_list(struct qedi_cmd *cmd) 24 { 25 struct scsi_cmnd *sc = cmd->scsi_cmd; 26 27 if (cmd->io_tbl.sge_valid && sc) { 28 cmd->io_tbl.sge_valid = 0; 29 scsi_dma_unmap(sc); 30 } 31 } 32 33 static void qedi_process_logout_resp(struct qedi_ctx *qedi, 34 union iscsi_cqe *cqe, 35 struct iscsi_task *task, 36 struct qedi_conn *qedi_conn) 37 { 38 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 39 struct iscsi_logout_rsp *resp_hdr; 40 struct iscsi_session *session = conn->session; 41 struct iscsi_logout_response_hdr *cqe_logout_response; 42 struct qedi_cmd *cmd; 43 44 cmd = (struct qedi_cmd *)task->dd_data; 45 cqe_logout_response = &cqe->cqe_common.iscsi_hdr.logout_response; 46 spin_lock(&session->back_lock); 47 resp_hdr = (struct iscsi_logout_rsp *)&qedi_conn->gen_pdu.resp_hdr; 48 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 49 resp_hdr->opcode = cqe_logout_response->opcode; 50 resp_hdr->flags = cqe_logout_response->flags; 51 resp_hdr->hlength = 0; 52 53 resp_hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age); 54 resp_hdr->statsn = cpu_to_be32(cqe_logout_response->stat_sn); 55 resp_hdr->exp_cmdsn = cpu_to_be32(cqe_logout_response->exp_cmd_sn); 56 resp_hdr->max_cmdsn = cpu_to_be32(cqe_logout_response->max_cmd_sn); 57 58 resp_hdr->t2wait = cpu_to_be32(cqe_logout_response->time_2_wait); 59 resp_hdr->t2retain = cpu_to_be32(cqe_logout_response->time_2_retain); 60 61 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, 62 "Freeing tid=0x%x for cid=0x%x\n", 63 cmd->task_id, qedi_conn->iscsi_conn_id); 64 65 if (likely(cmd->io_cmd_in_list)) { 66 cmd->io_cmd_in_list = false; 67 list_del_init(&cmd->io_cmd); 68 qedi_conn->active_cmd_count--; 69 } else { 70 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 71 "Active cmd list node already deleted, tid=0x%x, cid=0x%x, io_cmd_node=%p\n", 72 cmd->task_id, qedi_conn->iscsi_conn_id, 73 &cmd->io_cmd); 74 } 75 76 cmd->state = RESPONSE_RECEIVED; 77 qedi_clear_task_idx(qedi, cmd->task_id); 78 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); 79 80 spin_unlock(&session->back_lock); 81 } 82 83 static void qedi_process_text_resp(struct qedi_ctx *qedi, 84 union iscsi_cqe *cqe, 85 struct iscsi_task *task, 86 struct qedi_conn *qedi_conn) 87 { 88 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 89 struct iscsi_session *session = conn->session; 90 struct e4_iscsi_task_context *task_ctx; 91 struct iscsi_text_rsp *resp_hdr_ptr; 92 struct iscsi_text_response_hdr *cqe_text_response; 93 struct qedi_cmd *cmd; 94 int pld_len; 95 96 cmd = (struct qedi_cmd *)task->dd_data; 97 task_ctx = qedi_get_task_mem(&qedi->tasks, cmd->task_id); 98 99 cqe_text_response = &cqe->cqe_common.iscsi_hdr.text_response; 100 spin_lock(&session->back_lock); 101 resp_hdr_ptr = (struct iscsi_text_rsp *)&qedi_conn->gen_pdu.resp_hdr; 102 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_hdr)); 103 resp_hdr_ptr->opcode = cqe_text_response->opcode; 104 resp_hdr_ptr->flags = cqe_text_response->flags; 105 resp_hdr_ptr->hlength = 0; 106 107 hton24(resp_hdr_ptr->dlength, 108 (cqe_text_response->hdr_second_dword & 109 ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK)); 110 111 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid, 112 conn->session->age); 113 resp_hdr_ptr->ttt = cqe_text_response->ttt; 114 resp_hdr_ptr->statsn = cpu_to_be32(cqe_text_response->stat_sn); 115 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_text_response->exp_cmd_sn); 116 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_text_response->max_cmd_sn); 117 118 pld_len = cqe_text_response->hdr_second_dword & 119 ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK; 120 qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len; 121 122 memset(task_ctx, '\0', sizeof(*task_ctx)); 123 124 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, 125 "Freeing tid=0x%x for cid=0x%x\n", 126 cmd->task_id, qedi_conn->iscsi_conn_id); 127 128 if (likely(cmd->io_cmd_in_list)) { 129 cmd->io_cmd_in_list = false; 130 list_del_init(&cmd->io_cmd); 131 qedi_conn->active_cmd_count--; 132 } else { 133 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 134 "Active cmd list node already deleted, tid=0x%x, cid=0x%x, io_cmd_node=%p\n", 135 cmd->task_id, qedi_conn->iscsi_conn_id, 136 &cmd->io_cmd); 137 } 138 139 cmd->state = RESPONSE_RECEIVED; 140 qedi_clear_task_idx(qedi, cmd->task_id); 141 142 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, 143 qedi_conn->gen_pdu.resp_buf, 144 (qedi_conn->gen_pdu.resp_wr_ptr - 145 qedi_conn->gen_pdu.resp_buf)); 146 spin_unlock(&session->back_lock); 147 } 148 149 static void qedi_tmf_resp_work(struct work_struct *work) 150 { 151 struct qedi_cmd *qedi_cmd = 152 container_of(work, struct qedi_cmd, tmf_work); 153 struct qedi_conn *qedi_conn = qedi_cmd->conn; 154 struct qedi_ctx *qedi = qedi_conn->qedi; 155 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 156 struct iscsi_session *session = conn->session; 157 struct iscsi_tm_rsp *resp_hdr_ptr; 158 struct iscsi_cls_session *cls_sess; 159 int rval = 0; 160 161 set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); 162 resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf; 163 cls_sess = iscsi_conn_to_session(qedi_conn->cls_conn); 164 165 iscsi_block_session(session->cls_session); 166 rval = qedi_cleanup_all_io(qedi, qedi_conn, qedi_cmd->task, true); 167 if (rval) { 168 qedi_clear_task_idx(qedi, qedi_cmd->task_id); 169 iscsi_unblock_session(session->cls_session); 170 goto exit_tmf_resp; 171 } 172 173 iscsi_unblock_session(session->cls_session); 174 qedi_clear_task_idx(qedi, qedi_cmd->task_id); 175 176 spin_lock(&session->back_lock); 177 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0); 178 spin_unlock(&session->back_lock); 179 180 exit_tmf_resp: 181 kfree(resp_hdr_ptr); 182 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); 183 } 184 185 static void qedi_process_tmf_resp(struct qedi_ctx *qedi, 186 union iscsi_cqe *cqe, 187 struct iscsi_task *task, 188 struct qedi_conn *qedi_conn) 189 190 { 191 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 192 struct iscsi_session *session = conn->session; 193 struct iscsi_tmf_response_hdr *cqe_tmp_response; 194 struct iscsi_tm_rsp *resp_hdr_ptr; 195 struct iscsi_tm *tmf_hdr; 196 struct qedi_cmd *qedi_cmd = NULL; 197 198 cqe_tmp_response = &cqe->cqe_common.iscsi_hdr.tmf_response; 199 200 qedi_cmd = task->dd_data; 201 qedi_cmd->tmf_resp_buf = kzalloc(sizeof(*resp_hdr_ptr), GFP_ATOMIC); 202 if (!qedi_cmd->tmf_resp_buf) { 203 QEDI_ERR(&qedi->dbg_ctx, 204 "Failed to allocate resp buf, cid=0x%x\n", 205 qedi_conn->iscsi_conn_id); 206 return; 207 } 208 209 spin_lock(&session->back_lock); 210 resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf; 211 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_tm_rsp)); 212 213 /* Fill up the header */ 214 resp_hdr_ptr->opcode = cqe_tmp_response->opcode; 215 resp_hdr_ptr->flags = cqe_tmp_response->hdr_flags; 216 resp_hdr_ptr->response = cqe_tmp_response->hdr_response; 217 resp_hdr_ptr->hlength = 0; 218 219 hton24(resp_hdr_ptr->dlength, 220 (cqe_tmp_response->hdr_second_dword & 221 ISCSI_TMF_RESPONSE_HDR_DATA_SEG_LEN_MASK)); 222 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid, 223 conn->session->age); 224 resp_hdr_ptr->statsn = cpu_to_be32(cqe_tmp_response->stat_sn); 225 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_tmp_response->exp_cmd_sn); 226 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_tmp_response->max_cmd_sn); 227 228 tmf_hdr = (struct iscsi_tm *)qedi_cmd->task->hdr; 229 230 if (likely(qedi_cmd->io_cmd_in_list)) { 231 qedi_cmd->io_cmd_in_list = false; 232 list_del_init(&qedi_cmd->io_cmd); 233 qedi_conn->active_cmd_count--; 234 } 235 236 if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 237 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) || 238 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 239 ISCSI_TM_FUNC_TARGET_WARM_RESET) || 240 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 241 ISCSI_TM_FUNC_TARGET_COLD_RESET)) { 242 INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_resp_work); 243 queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work); 244 goto unblock_sess; 245 } 246 247 qedi_clear_task_idx(qedi, qedi_cmd->task_id); 248 249 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0); 250 kfree(resp_hdr_ptr); 251 252 unblock_sess: 253 spin_unlock(&session->back_lock); 254 } 255 256 static void qedi_process_login_resp(struct qedi_ctx *qedi, 257 union iscsi_cqe *cqe, 258 struct iscsi_task *task, 259 struct qedi_conn *qedi_conn) 260 { 261 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 262 struct iscsi_session *session = conn->session; 263 struct e4_iscsi_task_context *task_ctx; 264 struct iscsi_login_rsp *resp_hdr_ptr; 265 struct iscsi_login_response_hdr *cqe_login_response; 266 struct qedi_cmd *cmd; 267 int pld_len; 268 269 cmd = (struct qedi_cmd *)task->dd_data; 270 271 cqe_login_response = &cqe->cqe_common.iscsi_hdr.login_response; 272 task_ctx = qedi_get_task_mem(&qedi->tasks, cmd->task_id); 273 274 spin_lock(&session->back_lock); 275 resp_hdr_ptr = (struct iscsi_login_rsp *)&qedi_conn->gen_pdu.resp_hdr; 276 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_login_rsp)); 277 resp_hdr_ptr->opcode = cqe_login_response->opcode; 278 resp_hdr_ptr->flags = cqe_login_response->flags_attr; 279 resp_hdr_ptr->hlength = 0; 280 281 hton24(resp_hdr_ptr->dlength, 282 (cqe_login_response->hdr_second_dword & 283 ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK)); 284 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid, 285 conn->session->age); 286 resp_hdr_ptr->tsih = cqe_login_response->tsih; 287 resp_hdr_ptr->statsn = cpu_to_be32(cqe_login_response->stat_sn); 288 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_login_response->exp_cmd_sn); 289 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_login_response->max_cmd_sn); 290 resp_hdr_ptr->status_class = cqe_login_response->status_class; 291 resp_hdr_ptr->status_detail = cqe_login_response->status_detail; 292 pld_len = cqe_login_response->hdr_second_dword & 293 ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK; 294 qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len; 295 296 if (likely(cmd->io_cmd_in_list)) { 297 cmd->io_cmd_in_list = false; 298 list_del_init(&cmd->io_cmd); 299 qedi_conn->active_cmd_count--; 300 } 301 302 memset(task_ctx, '\0', sizeof(*task_ctx)); 303 304 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, 305 qedi_conn->gen_pdu.resp_buf, 306 (qedi_conn->gen_pdu.resp_wr_ptr - 307 qedi_conn->gen_pdu.resp_buf)); 308 309 spin_unlock(&session->back_lock); 310 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, 311 "Freeing tid=0x%x for cid=0x%x\n", 312 cmd->task_id, qedi_conn->iscsi_conn_id); 313 cmd->state = RESPONSE_RECEIVED; 314 qedi_clear_task_idx(qedi, cmd->task_id); 315 } 316 317 static void qedi_get_rq_bdq_buf(struct qedi_ctx *qedi, 318 struct iscsi_cqe_unsolicited *cqe, 319 char *ptr, int len) 320 { 321 u16 idx = 0; 322 323 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 324 "pld_len [%d], bdq_prod_idx [%d], idx [%d]\n", 325 len, qedi->bdq_prod_idx, 326 (qedi->bdq_prod_idx % qedi->rq_num_entries)); 327 328 /* Obtain buffer address from rqe_opaque */ 329 idx = cqe->rqe_opaque; 330 if (idx > (QEDI_BDQ_NUM - 1)) { 331 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 332 "wrong idx %d returned by FW, dropping the unsolicited pkt\n", 333 idx); 334 return; 335 } 336 337 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 338 "rqe_opaque [0x%p], idx [%d]\n", cqe->rqe_opaque, idx); 339 340 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 341 "unsol_cqe_type = %d\n", cqe->unsol_cqe_type); 342 switch (cqe->unsol_cqe_type) { 343 case ISCSI_CQE_UNSOLICITED_SINGLE: 344 case ISCSI_CQE_UNSOLICITED_FIRST: 345 if (len) 346 memcpy(ptr, (void *)qedi->bdq[idx].buf_addr, len); 347 break; 348 case ISCSI_CQE_UNSOLICITED_MIDDLE: 349 case ISCSI_CQE_UNSOLICITED_LAST: 350 break; 351 default: 352 break; 353 } 354 } 355 356 static void qedi_put_rq_bdq_buf(struct qedi_ctx *qedi, 357 struct iscsi_cqe_unsolicited *cqe, 358 int count) 359 { 360 u16 tmp; 361 u16 idx = 0; 362 struct scsi_bd *pbl; 363 364 /* Obtain buffer address from rqe_opaque */ 365 idx = cqe->rqe_opaque; 366 if (idx > (QEDI_BDQ_NUM - 1)) { 367 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 368 "wrong idx %d returned by FW, dropping the unsolicited pkt\n", 369 idx); 370 return; 371 } 372 373 pbl = (struct scsi_bd *)qedi->bdq_pbl; 374 pbl += (qedi->bdq_prod_idx % qedi->rq_num_entries); 375 pbl->address.hi = cpu_to_le32(QEDI_U64_HI(qedi->bdq[idx].buf_dma)); 376 pbl->address.lo = cpu_to_le32(QEDI_U64_LO(qedi->bdq[idx].buf_dma)); 377 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 378 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx] idx [%d]\n", 379 pbl, pbl->address.hi, pbl->address.lo, idx); 380 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0; 381 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0; 382 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0; 383 pbl->opaque.iscsi_opaque.opaque = cpu_to_le32(idx); 384 385 /* Increment producer to let f/w know we've handled the frame */ 386 qedi->bdq_prod_idx += count; 387 388 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod); 389 tmp = readw(qedi->bdq_primary_prod); 390 391 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod); 392 tmp = readw(qedi->bdq_secondary_prod); 393 } 394 395 static void qedi_unsol_pdu_adjust_bdq(struct qedi_ctx *qedi, 396 struct iscsi_cqe_unsolicited *cqe, 397 u32 pdu_len, u32 num_bdqs, 398 char *bdq_data) 399 { 400 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 401 "num_bdqs [%d]\n", num_bdqs); 402 403 qedi_get_rq_bdq_buf(qedi, cqe, bdq_data, pdu_len); 404 qedi_put_rq_bdq_buf(qedi, cqe, (num_bdqs + 1)); 405 } 406 407 static int qedi_process_nopin_mesg(struct qedi_ctx *qedi, 408 union iscsi_cqe *cqe, 409 struct iscsi_task *task, 410 struct qedi_conn *qedi_conn, u16 que_idx) 411 { 412 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 413 struct iscsi_session *session = conn->session; 414 struct iscsi_nop_in_hdr *cqe_nop_in; 415 struct iscsi_nopin *hdr; 416 struct qedi_cmd *cmd; 417 int tgt_async_nop = 0; 418 u32 lun[2]; 419 u32 pdu_len, num_bdqs; 420 char bdq_data[QEDI_BDQ_BUF_SIZE]; 421 unsigned long flags; 422 423 spin_lock_bh(&session->back_lock); 424 cqe_nop_in = &cqe->cqe_common.iscsi_hdr.nop_in; 425 426 pdu_len = cqe_nop_in->hdr_second_dword & 427 ISCSI_NOP_IN_HDR_DATA_SEG_LEN_MASK; 428 num_bdqs = pdu_len / QEDI_BDQ_BUF_SIZE; 429 430 hdr = (struct iscsi_nopin *)&qedi_conn->gen_pdu.resp_hdr; 431 memset(hdr, 0, sizeof(struct iscsi_hdr)); 432 hdr->opcode = cqe_nop_in->opcode; 433 hdr->max_cmdsn = cpu_to_be32(cqe_nop_in->max_cmd_sn); 434 hdr->exp_cmdsn = cpu_to_be32(cqe_nop_in->exp_cmd_sn); 435 hdr->statsn = cpu_to_be32(cqe_nop_in->stat_sn); 436 hdr->ttt = cpu_to_be32(cqe_nop_in->ttt); 437 438 if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) { 439 spin_lock_irqsave(&qedi->hba_lock, flags); 440 qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited, 441 pdu_len, num_bdqs, bdq_data); 442 hdr->itt = RESERVED_ITT; 443 tgt_async_nop = 1; 444 spin_unlock_irqrestore(&qedi->hba_lock, flags); 445 goto done; 446 } 447 448 /* Response to one of our nop-outs */ 449 if (task) { 450 cmd = task->dd_data; 451 hdr->flags = ISCSI_FLAG_CMD_FINAL; 452 hdr->itt = build_itt(cqe->cqe_solicited.itid, 453 conn->session->age); 454 lun[0] = 0xffffffff; 455 lun[1] = 0xffffffff; 456 memcpy(&hdr->lun, lun, sizeof(struct scsi_lun)); 457 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, 458 "Freeing tid=0x%x for cid=0x%x\n", 459 cmd->task_id, qedi_conn->iscsi_conn_id); 460 cmd->state = RESPONSE_RECEIVED; 461 spin_lock(&qedi_conn->list_lock); 462 if (likely(cmd->io_cmd_in_list)) { 463 cmd->io_cmd_in_list = false; 464 list_del_init(&cmd->io_cmd); 465 qedi_conn->active_cmd_count--; 466 } 467 468 spin_unlock(&qedi_conn->list_lock); 469 qedi_clear_task_idx(qedi, cmd->task_id); 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 qedi_clear_task_idx(qedi, cmd->task_id); 675 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, 676 conn->data, datalen); 677 error: 678 spin_unlock_bh(&session->back_lock); 679 } 680 681 static void qedi_mtask_completion(struct qedi_ctx *qedi, 682 union iscsi_cqe *cqe, 683 struct iscsi_task *task, 684 struct qedi_conn *conn, uint16_t que_idx) 685 { 686 struct iscsi_conn *iscsi_conn; 687 u32 hdr_opcode; 688 689 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte; 690 iscsi_conn = conn->cls_conn->dd_data; 691 692 switch (hdr_opcode) { 693 case ISCSI_OPCODE_SCSI_RESPONSE: 694 case ISCSI_OPCODE_DATA_IN: 695 qedi_scsi_completion(qedi, cqe, task, iscsi_conn); 696 break; 697 case ISCSI_OPCODE_LOGIN_RESPONSE: 698 qedi_process_login_resp(qedi, cqe, task, conn); 699 break; 700 case ISCSI_OPCODE_TMF_RESPONSE: 701 qedi_process_tmf_resp(qedi, cqe, task, conn); 702 break; 703 case ISCSI_OPCODE_TEXT_RESPONSE: 704 qedi_process_text_resp(qedi, cqe, task, conn); 705 break; 706 case ISCSI_OPCODE_LOGOUT_RESPONSE: 707 qedi_process_logout_resp(qedi, cqe, task, conn); 708 break; 709 case ISCSI_OPCODE_NOP_IN: 710 qedi_process_nopin_mesg(qedi, cqe, task, conn, que_idx); 711 break; 712 default: 713 QEDI_ERR(&qedi->dbg_ctx, "unknown opcode\n"); 714 } 715 } 716 717 static void qedi_process_nopin_local_cmpl(struct qedi_ctx *qedi, 718 struct iscsi_cqe_solicited *cqe, 719 struct iscsi_task *task, 720 struct qedi_conn *qedi_conn) 721 { 722 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 723 struct iscsi_session *session = conn->session; 724 struct qedi_cmd *cmd = task->dd_data; 725 726 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UNSOL, 727 "itid=0x%x, cmd task id=0x%x\n", 728 cqe->itid, cmd->task_id); 729 730 cmd->state = RESPONSE_RECEIVED; 731 qedi_clear_task_idx(qedi, cmd->task_id); 732 733 spin_lock_bh(&session->back_lock); 734 __iscsi_put_task(task); 735 spin_unlock_bh(&session->back_lock); 736 } 737 738 static void qedi_process_cmd_cleanup_resp(struct qedi_ctx *qedi, 739 struct iscsi_cqe_solicited *cqe, 740 struct iscsi_task *task, 741 struct iscsi_conn *conn) 742 { 743 struct qedi_work_map *work, *work_tmp; 744 u32 proto_itt = cqe->itid; 745 u32 ptmp_itt = 0; 746 itt_t protoitt = 0; 747 int found = 0; 748 struct qedi_cmd *qedi_cmd = NULL; 749 u32 rtid = 0; 750 u32 iscsi_cid; 751 struct qedi_conn *qedi_conn; 752 struct qedi_cmd *dbg_cmd; 753 struct iscsi_task *mtask; 754 struct iscsi_tm *tmf_hdr = NULL; 755 756 iscsi_cid = cqe->conn_id; 757 qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; 758 if (!qedi_conn) { 759 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 760 "icid not found 0x%x\n", cqe->conn_id); 761 return; 762 } 763 764 /* Based on this itt get the corresponding qedi_cmd */ 765 spin_lock_bh(&qedi_conn->tmf_work_lock); 766 list_for_each_entry_safe(work, work_tmp, &qedi_conn->tmf_work_list, 767 list) { 768 if (work->rtid == proto_itt) { 769 /* We found the command */ 770 qedi_cmd = work->qedi_cmd; 771 if (!qedi_cmd->list_tmf_work) { 772 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 773 "TMF work not found, cqe->tid=0x%x, cid=0x%x\n", 774 proto_itt, qedi_conn->iscsi_conn_id); 775 WARN_ON(1); 776 } 777 found = 1; 778 mtask = qedi_cmd->task; 779 tmf_hdr = (struct iscsi_tm *)mtask->hdr; 780 rtid = work->rtid; 781 782 list_del_init(&work->list); 783 kfree(work); 784 qedi_cmd->list_tmf_work = NULL; 785 } 786 } 787 spin_unlock_bh(&qedi_conn->tmf_work_lock); 788 789 if (found) { 790 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 791 "TMF work, cqe->tid=0x%x, tmf flags=0x%x, cid=0x%x\n", 792 proto_itt, tmf_hdr->flags, qedi_conn->iscsi_conn_id); 793 794 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 795 ISCSI_TM_FUNC_ABORT_TASK) { 796 spin_lock_bh(&conn->session->back_lock); 797 798 protoitt = build_itt(get_itt(tmf_hdr->rtt), 799 conn->session->age); 800 task = iscsi_itt_to_task(conn, protoitt); 801 802 spin_unlock_bh(&conn->session->back_lock); 803 804 if (!task) { 805 QEDI_NOTICE(&qedi->dbg_ctx, 806 "IO task completed, tmf rtt=0x%x, cid=0x%x\n", 807 get_itt(tmf_hdr->rtt), 808 qedi_conn->iscsi_conn_id); 809 return; 810 } 811 812 dbg_cmd = task->dd_data; 813 814 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 815 "Abort tmf rtt=0x%x, i/o itt=0x%x, i/o tid=0x%x, cid=0x%x\n", 816 get_itt(tmf_hdr->rtt), get_itt(task->itt), 817 dbg_cmd->task_id, qedi_conn->iscsi_conn_id); 818 819 if (qedi_cmd->state == CLEANUP_WAIT_FAILED) 820 qedi_cmd->state = CLEANUP_RECV; 821 822 qedi_clear_task_idx(qedi_conn->qedi, rtid); 823 824 spin_lock(&qedi_conn->list_lock); 825 list_del_init(&dbg_cmd->io_cmd); 826 qedi_conn->active_cmd_count--; 827 spin_unlock(&qedi_conn->list_lock); 828 qedi_cmd->state = CLEANUP_RECV; 829 wake_up_interruptible(&qedi_conn->wait_queue); 830 } 831 } else if (qedi_conn->cmd_cleanup_req > 0) { 832 spin_lock_bh(&conn->session->back_lock); 833 qedi_get_proto_itt(qedi, cqe->itid, &ptmp_itt); 834 protoitt = build_itt(ptmp_itt, conn->session->age); 835 task = iscsi_itt_to_task(conn, protoitt); 836 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 837 "cleanup io itid=0x%x, protoitt=0x%x, cmd_cleanup_cmpl=%d, cid=0x%x\n", 838 cqe->itid, protoitt, qedi_conn->cmd_cleanup_cmpl, 839 qedi_conn->iscsi_conn_id); 840 841 spin_unlock_bh(&conn->session->back_lock); 842 if (!task) { 843 QEDI_NOTICE(&qedi->dbg_ctx, 844 "task is null, itid=0x%x, cid=0x%x\n", 845 cqe->itid, qedi_conn->iscsi_conn_id); 846 return; 847 } 848 qedi_conn->cmd_cleanup_cmpl++; 849 wake_up(&qedi_conn->wait_queue); 850 851 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, 852 "Freeing tid=0x%x for cid=0x%x\n", 853 cqe->itid, qedi_conn->iscsi_conn_id); 854 qedi_clear_task_idx(qedi_conn->qedi, cqe->itid); 855 856 } else { 857 qedi_get_proto_itt(qedi, cqe->itid, &ptmp_itt); 858 protoitt = build_itt(ptmp_itt, conn->session->age); 859 task = iscsi_itt_to_task(conn, protoitt); 860 QEDI_ERR(&qedi->dbg_ctx, 861 "Delayed or untracked cleanup response, itt=0x%x, tid=0x%x, cid=0x%x, task=%p\n", 862 protoitt, cqe->itid, qedi_conn->iscsi_conn_id, task); 863 } 864 } 865 866 void qedi_fp_process_cqes(struct qedi_work *work) 867 { 868 struct qedi_ctx *qedi = work->qedi; 869 union iscsi_cqe *cqe = &work->cqe; 870 struct iscsi_task *task = NULL; 871 struct iscsi_nopout *nopout_hdr; 872 struct qedi_conn *q_conn; 873 struct iscsi_conn *conn; 874 struct qedi_cmd *qedi_cmd; 875 u32 comp_type; 876 u32 iscsi_cid; 877 u32 hdr_opcode; 878 u16 que_idx = work->que_idx; 879 u8 cqe_err_bits = 0; 880 881 comp_type = cqe->cqe_common.cqe_type; 882 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte; 883 cqe_err_bits = 884 cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits; 885 886 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 887 "fw_cid=0x%x, cqe type=0x%x, opcode=0x%x\n", 888 cqe->cqe_common.conn_id, comp_type, hdr_opcode); 889 890 if (comp_type >= MAX_ISCSI_CQES_TYPE) { 891 QEDI_WARN(&qedi->dbg_ctx, "Invalid CqE type\n"); 892 return; 893 } 894 895 iscsi_cid = cqe->cqe_common.conn_id; 896 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; 897 if (!q_conn) { 898 QEDI_WARN(&qedi->dbg_ctx, 899 "Session no longer exists for cid=0x%x!!\n", 900 iscsi_cid); 901 return; 902 } 903 904 conn = q_conn->cls_conn->dd_data; 905 906 if (unlikely(cqe_err_bits && 907 GET_FIELD(cqe_err_bits, 908 CQE_ERROR_BITMAP_DATA_DIGEST_ERR))) { 909 iscsi_conn_failure(conn, ISCSI_ERR_DATA_DGST); 910 return; 911 } 912 913 switch (comp_type) { 914 case ISCSI_CQE_TYPE_SOLICITED: 915 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE: 916 qedi_cmd = container_of(work, struct qedi_cmd, cqe_work); 917 task = qedi_cmd->task; 918 if (!task) { 919 QEDI_WARN(&qedi->dbg_ctx, "task is NULL\n"); 920 return; 921 } 922 923 /* Process NOPIN local completion */ 924 nopout_hdr = (struct iscsi_nopout *)task->hdr; 925 if ((nopout_hdr->itt == RESERVED_ITT) && 926 (cqe->cqe_solicited.itid != (u16)RESERVED_ITT)) { 927 qedi_process_nopin_local_cmpl(qedi, &cqe->cqe_solicited, 928 task, q_conn); 929 } else { 930 cqe->cqe_solicited.itid = 931 qedi_get_itt(cqe->cqe_solicited); 932 /* Process other solicited responses */ 933 qedi_mtask_completion(qedi, cqe, task, q_conn, que_idx); 934 } 935 break; 936 case ISCSI_CQE_TYPE_UNSOLICITED: 937 switch (hdr_opcode) { 938 case ISCSI_OPCODE_NOP_IN: 939 qedi_process_nopin_mesg(qedi, cqe, task, q_conn, 940 que_idx); 941 break; 942 case ISCSI_OPCODE_ASYNC_MSG: 943 qedi_process_async_mesg(qedi, cqe, task, q_conn, 944 que_idx); 945 break; 946 case ISCSI_OPCODE_REJECT: 947 qedi_process_reject_mesg(qedi, cqe, task, q_conn, 948 que_idx); 949 break; 950 } 951 goto exit_fp_process; 952 case ISCSI_CQE_TYPE_DUMMY: 953 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "Dummy CqE\n"); 954 goto exit_fp_process; 955 case ISCSI_CQE_TYPE_TASK_CLEANUP: 956 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "CleanUp CqE\n"); 957 qedi_process_cmd_cleanup_resp(qedi, &cqe->cqe_solicited, task, 958 conn); 959 goto exit_fp_process; 960 default: 961 QEDI_ERR(&qedi->dbg_ctx, "Error cqe.\n"); 962 break; 963 } 964 965 exit_fp_process: 966 return; 967 } 968 969 static void qedi_ring_doorbell(struct qedi_conn *qedi_conn) 970 { 971 struct iscsi_db_data dbell = { 0 }; 972 973 dbell.agg_flags = 0; 974 975 dbell.params |= DB_DEST_XCM << ISCSI_DB_DATA_DEST_SHIFT; 976 dbell.params |= DB_AGG_CMD_SET << ISCSI_DB_DATA_AGG_CMD_SHIFT; 977 dbell.params |= 978 DQ_XCM_ISCSI_SQ_PROD_CMD << ISCSI_DB_DATA_AGG_VAL_SEL_SHIFT; 979 980 dbell.sq_prod = qedi_conn->ep->fw_sq_prod_idx; 981 writel(*(u32 *)&dbell, qedi_conn->ep->p_doorbell); 982 983 /* Make sure fw write idx is coherent, and include both memory barriers 984 * as a failsafe as for some architectures the call is the same but on 985 * others they are two different assembly operations. 986 */ 987 wmb(); 988 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_MP_REQ, 989 "prod_idx=0x%x, fw_prod_idx=0x%x, cid=0x%x\n", 990 qedi_conn->ep->sq_prod_idx, qedi_conn->ep->fw_sq_prod_idx, 991 qedi_conn->iscsi_conn_id); 992 } 993 994 static u16 qedi_get_wqe_idx(struct qedi_conn *qedi_conn) 995 { 996 struct qedi_endpoint *ep; 997 u16 rval; 998 999 ep = qedi_conn->ep; 1000 rval = ep->sq_prod_idx; 1001 1002 /* Increament SQ index */ 1003 ep->sq_prod_idx++; 1004 ep->fw_sq_prod_idx++; 1005 if (ep->sq_prod_idx == QEDI_SQ_SIZE) 1006 ep->sq_prod_idx = 0; 1007 1008 return rval; 1009 } 1010 1011 int qedi_send_iscsi_login(struct qedi_conn *qedi_conn, 1012 struct iscsi_task *task) 1013 { 1014 struct iscsi_login_req_hdr login_req_pdu_header; 1015 struct scsi_sgl_task_params tx_sgl_task_params; 1016 struct scsi_sgl_task_params rx_sgl_task_params; 1017 struct iscsi_task_params task_params; 1018 struct e4_iscsi_task_context *fw_task_ctx; 1019 struct qedi_ctx *qedi = qedi_conn->qedi; 1020 struct iscsi_login_req *login_hdr; 1021 struct scsi_sge *resp_sge = NULL; 1022 struct qedi_cmd *qedi_cmd; 1023 struct qedi_endpoint *ep; 1024 s16 tid = 0; 1025 u16 sq_idx = 0; 1026 int rval = 0; 1027 1028 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1029 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1030 ep = qedi_conn->ep; 1031 login_hdr = (struct iscsi_login_req *)task->hdr; 1032 1033 tid = qedi_get_task_idx(qedi); 1034 if (tid == -1) 1035 return -ENOMEM; 1036 1037 fw_task_ctx = 1038 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1039 tid); 1040 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1041 1042 qedi_cmd->task_id = tid; 1043 1044 memset(&task_params, 0, sizeof(task_params)); 1045 memset(&login_req_pdu_header, 0, sizeof(login_req_pdu_header)); 1046 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1047 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1048 /* Update header info */ 1049 login_req_pdu_header.opcode = login_hdr->opcode; 1050 login_req_pdu_header.version_min = login_hdr->min_version; 1051 login_req_pdu_header.version_max = login_hdr->max_version; 1052 login_req_pdu_header.flags_attr = login_hdr->flags; 1053 login_req_pdu_header.isid_tabc = swab32p((u32 *)login_hdr->isid); 1054 login_req_pdu_header.isid_d = swab16p((u16 *)&login_hdr->isid[4]); 1055 1056 login_req_pdu_header.tsih = login_hdr->tsih; 1057 login_req_pdu_header.hdr_second_dword = ntoh24(login_hdr->dlength); 1058 1059 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1060 login_req_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1061 login_req_pdu_header.cid = qedi_conn->iscsi_conn_id; 1062 login_req_pdu_header.cmd_sn = be32_to_cpu(login_hdr->cmdsn); 1063 login_req_pdu_header.exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn); 1064 login_req_pdu_header.exp_stat_sn = 0; 1065 1066 /* Fill tx AHS and rx buffer */ 1067 tx_sgl_task_params.sgl = 1068 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1069 tx_sgl_task_params.sgl_phys_addr.lo = 1070 (u32)(qedi_conn->gen_pdu.req_dma_addr); 1071 tx_sgl_task_params.sgl_phys_addr.hi = 1072 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); 1073 tx_sgl_task_params.total_buffer_size = ntoh24(login_hdr->dlength); 1074 tx_sgl_task_params.num_sges = 1; 1075 1076 rx_sgl_task_params.sgl = 1077 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1078 rx_sgl_task_params.sgl_phys_addr.lo = 1079 (u32)(qedi_conn->gen_pdu.resp_dma_addr); 1080 rx_sgl_task_params.sgl_phys_addr.hi = 1081 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); 1082 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; 1083 rx_sgl_task_params.num_sges = 1; 1084 1085 /* Fill fw input params */ 1086 task_params.context = fw_task_ctx; 1087 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1088 task_params.itid = tid; 1089 task_params.cq_rss_number = 0; 1090 task_params.tx_io_size = ntoh24(login_hdr->dlength); 1091 task_params.rx_io_size = resp_sge->sge_len; 1092 1093 sq_idx = qedi_get_wqe_idx(qedi_conn); 1094 task_params.sqe = &ep->sq[sq_idx]; 1095 1096 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1097 rval = init_initiator_login_request_task(&task_params, 1098 &login_req_pdu_header, 1099 &tx_sgl_task_params, 1100 &rx_sgl_task_params); 1101 if (rval) 1102 return -1; 1103 1104 spin_lock(&qedi_conn->list_lock); 1105 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1106 qedi_cmd->io_cmd_in_list = true; 1107 qedi_conn->active_cmd_count++; 1108 spin_unlock(&qedi_conn->list_lock); 1109 1110 qedi_ring_doorbell(qedi_conn); 1111 return 0; 1112 } 1113 1114 int qedi_send_iscsi_logout(struct qedi_conn *qedi_conn, 1115 struct iscsi_task *task) 1116 { 1117 struct iscsi_logout_req_hdr logout_pdu_header; 1118 struct scsi_sgl_task_params tx_sgl_task_params; 1119 struct scsi_sgl_task_params rx_sgl_task_params; 1120 struct iscsi_task_params task_params; 1121 struct e4_iscsi_task_context *fw_task_ctx; 1122 struct iscsi_logout *logout_hdr = NULL; 1123 struct qedi_ctx *qedi = qedi_conn->qedi; 1124 struct qedi_cmd *qedi_cmd; 1125 struct qedi_endpoint *ep; 1126 s16 tid = 0; 1127 u16 sq_idx = 0; 1128 int rval = 0; 1129 1130 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1131 logout_hdr = (struct iscsi_logout *)task->hdr; 1132 ep = qedi_conn->ep; 1133 1134 tid = qedi_get_task_idx(qedi); 1135 if (tid == -1) 1136 return -ENOMEM; 1137 1138 fw_task_ctx = 1139 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1140 tid); 1141 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1142 1143 qedi_cmd->task_id = tid; 1144 1145 memset(&task_params, 0, sizeof(task_params)); 1146 memset(&logout_pdu_header, 0, sizeof(logout_pdu_header)); 1147 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1148 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1149 1150 /* Update header info */ 1151 logout_pdu_header.opcode = logout_hdr->opcode; 1152 logout_pdu_header.reason_code = 0x80 | logout_hdr->flags; 1153 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1154 logout_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1155 logout_pdu_header.exp_stat_sn = be32_to_cpu(logout_hdr->exp_statsn); 1156 logout_pdu_header.cmd_sn = be32_to_cpu(logout_hdr->cmdsn); 1157 logout_pdu_header.cid = qedi_conn->iscsi_conn_id; 1158 1159 /* Fill fw input params */ 1160 task_params.context = fw_task_ctx; 1161 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1162 task_params.itid = tid; 1163 task_params.cq_rss_number = 0; 1164 task_params.tx_io_size = 0; 1165 task_params.rx_io_size = 0; 1166 1167 sq_idx = qedi_get_wqe_idx(qedi_conn); 1168 task_params.sqe = &ep->sq[sq_idx]; 1169 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1170 1171 rval = init_initiator_logout_request_task(&task_params, 1172 &logout_pdu_header, 1173 NULL, NULL); 1174 if (rval) 1175 return -1; 1176 1177 spin_lock(&qedi_conn->list_lock); 1178 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1179 qedi_cmd->io_cmd_in_list = true; 1180 qedi_conn->active_cmd_count++; 1181 spin_unlock(&qedi_conn->list_lock); 1182 1183 qedi_ring_doorbell(qedi_conn); 1184 return 0; 1185 } 1186 1187 int qedi_cleanup_all_io(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn, 1188 struct iscsi_task *task, bool in_recovery) 1189 { 1190 int rval; 1191 struct iscsi_task *ctask; 1192 struct qedi_cmd *cmd, *cmd_tmp; 1193 struct iscsi_tm *tmf_hdr; 1194 unsigned int lun = 0; 1195 bool lun_reset = false; 1196 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 1197 struct iscsi_session *session = conn->session; 1198 1199 /* From recovery, task is NULL or from tmf resp valid task */ 1200 if (task) { 1201 tmf_hdr = (struct iscsi_tm *)task->hdr; 1202 1203 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1204 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) { 1205 lun_reset = true; 1206 lun = scsilun_to_int(&tmf_hdr->lun); 1207 } 1208 } 1209 1210 qedi_conn->cmd_cleanup_req = 0; 1211 qedi_conn->cmd_cleanup_cmpl = 0; 1212 1213 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1214 "active_cmd_count=%d, cid=0x%x, in_recovery=%d, lun_reset=%d\n", 1215 qedi_conn->active_cmd_count, qedi_conn->iscsi_conn_id, 1216 in_recovery, lun_reset); 1217 1218 if (lun_reset) 1219 spin_lock_bh(&session->back_lock); 1220 1221 spin_lock(&qedi_conn->list_lock); 1222 1223 list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list, 1224 io_cmd) { 1225 ctask = cmd->task; 1226 if (ctask == task) 1227 continue; 1228 1229 if (lun_reset) { 1230 if (cmd->scsi_cmd && cmd->scsi_cmd->device) { 1231 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1232 "tid=0x%x itt=0x%x scsi_cmd_ptr=%p device=%p task_state=%d cmd_state=0%x cid=0x%x\n", 1233 cmd->task_id, get_itt(ctask->itt), 1234 cmd->scsi_cmd, cmd->scsi_cmd->device, 1235 ctask->state, cmd->state, 1236 qedi_conn->iscsi_conn_id); 1237 if (cmd->scsi_cmd->device->lun != lun) 1238 continue; 1239 } 1240 } 1241 qedi_conn->cmd_cleanup_req++; 1242 qedi_iscsi_cleanup_task(ctask, true); 1243 1244 list_del_init(&cmd->io_cmd); 1245 qedi_conn->active_cmd_count--; 1246 QEDI_WARN(&qedi->dbg_ctx, 1247 "Deleted active cmd list node io_cmd=%p, cid=0x%x\n", 1248 &cmd->io_cmd, qedi_conn->iscsi_conn_id); 1249 } 1250 1251 spin_unlock(&qedi_conn->list_lock); 1252 1253 if (lun_reset) 1254 spin_unlock_bh(&session->back_lock); 1255 1256 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1257 "cmd_cleanup_req=%d, cid=0x%x\n", 1258 qedi_conn->cmd_cleanup_req, 1259 qedi_conn->iscsi_conn_id); 1260 1261 rval = wait_event_interruptible_timeout(qedi_conn->wait_queue, 1262 ((qedi_conn->cmd_cleanup_req == 1263 qedi_conn->cmd_cleanup_cmpl) || 1264 qedi_conn->ep), 1265 5 * HZ); 1266 if (rval) { 1267 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1268 "i/o cmd_cleanup_req=%d, equal to cmd_cleanup_cmpl=%d, cid=0x%x\n", 1269 qedi_conn->cmd_cleanup_req, 1270 qedi_conn->cmd_cleanup_cmpl, 1271 qedi_conn->iscsi_conn_id); 1272 1273 return 0; 1274 } 1275 1276 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1277 "i/o cmd_cleanup_req=%d, not equal to cmd_cleanup_cmpl=%d, cid=0x%x\n", 1278 qedi_conn->cmd_cleanup_req, 1279 qedi_conn->cmd_cleanup_cmpl, 1280 qedi_conn->iscsi_conn_id); 1281 1282 iscsi_host_for_each_session(qedi->shost, 1283 qedi_mark_device_missing); 1284 qedi_ops->common->drain(qedi->cdev); 1285 1286 /* Enable IOs for all other sessions except current.*/ 1287 if (!wait_event_interruptible_timeout(qedi_conn->wait_queue, 1288 (qedi_conn->cmd_cleanup_req == 1289 qedi_conn->cmd_cleanup_cmpl), 1290 5 * HZ)) { 1291 iscsi_host_for_each_session(qedi->shost, 1292 qedi_mark_device_available); 1293 return -1; 1294 } 1295 1296 iscsi_host_for_each_session(qedi->shost, 1297 qedi_mark_device_available); 1298 1299 return 0; 1300 } 1301 1302 void qedi_clearsq(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn, 1303 struct iscsi_task *task) 1304 { 1305 struct qedi_endpoint *qedi_ep; 1306 int rval; 1307 1308 qedi_ep = qedi_conn->ep; 1309 qedi_conn->cmd_cleanup_req = 0; 1310 qedi_conn->cmd_cleanup_cmpl = 0; 1311 1312 if (!qedi_ep) { 1313 QEDI_WARN(&qedi->dbg_ctx, 1314 "Cannot proceed, ep already disconnected, cid=0x%x\n", 1315 qedi_conn->iscsi_conn_id); 1316 return; 1317 } 1318 1319 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1320 "Clearing SQ for cid=0x%x, conn=%p, ep=%p\n", 1321 qedi_conn->iscsi_conn_id, qedi_conn, qedi_ep); 1322 1323 qedi_ops->clear_sq(qedi->cdev, qedi_ep->handle); 1324 1325 rval = qedi_cleanup_all_io(qedi, qedi_conn, task, true); 1326 if (rval) { 1327 QEDI_ERR(&qedi->dbg_ctx, 1328 "fatal error, need hard reset, cid=0x%x\n", 1329 qedi_conn->iscsi_conn_id); 1330 WARN_ON(1); 1331 } 1332 } 1333 1334 static int qedi_wait_for_cleanup_request(struct qedi_ctx *qedi, 1335 struct qedi_conn *qedi_conn, 1336 struct iscsi_task *task, 1337 struct qedi_cmd *qedi_cmd, 1338 struct qedi_work_map *list_work) 1339 { 1340 struct qedi_cmd *cmd = (struct qedi_cmd *)task->dd_data; 1341 int wait; 1342 1343 wait = wait_event_interruptible_timeout(qedi_conn->wait_queue, 1344 ((qedi_cmd->state == 1345 CLEANUP_RECV) || 1346 ((qedi_cmd->type == TYPEIO) && 1347 (cmd->state == 1348 RESPONSE_RECEIVED))), 1349 5 * HZ); 1350 if (!wait) { 1351 qedi_cmd->state = CLEANUP_WAIT_FAILED; 1352 1353 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1354 "Cleanup timedout tid=0x%x, issue connection recovery, cid=0x%x\n", 1355 cmd->task_id, qedi_conn->iscsi_conn_id); 1356 1357 return -1; 1358 } 1359 return 0; 1360 } 1361 1362 static void qedi_tmf_work(struct work_struct *work) 1363 { 1364 struct qedi_cmd *qedi_cmd = 1365 container_of(work, struct qedi_cmd, tmf_work); 1366 struct qedi_conn *qedi_conn = qedi_cmd->conn; 1367 struct qedi_ctx *qedi = qedi_conn->qedi; 1368 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 1369 struct iscsi_cls_session *cls_sess; 1370 struct qedi_work_map *list_work = NULL; 1371 struct iscsi_task *mtask; 1372 struct qedi_cmd *cmd; 1373 struct iscsi_task *ctask; 1374 struct iscsi_tm *tmf_hdr; 1375 s16 rval = 0; 1376 s16 tid = 0; 1377 1378 mtask = qedi_cmd->task; 1379 tmf_hdr = (struct iscsi_tm *)mtask->hdr; 1380 cls_sess = iscsi_conn_to_session(qedi_conn->cls_conn); 1381 set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); 1382 1383 ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt); 1384 if (!ctask || !ctask->sc) { 1385 QEDI_ERR(&qedi->dbg_ctx, "Task already completed\n"); 1386 goto abort_ret; 1387 } 1388 1389 cmd = (struct qedi_cmd *)ctask->dd_data; 1390 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1391 "Abort tmf rtt=0x%x, cmd itt=0x%x, cmd tid=0x%x, cid=0x%x\n", 1392 get_itt(tmf_hdr->rtt), get_itt(ctask->itt), cmd->task_id, 1393 qedi_conn->iscsi_conn_id); 1394 1395 if (qedi_do_not_recover) { 1396 QEDI_ERR(&qedi->dbg_ctx, "DONT SEND CLEANUP/ABORT %d\n", 1397 qedi_do_not_recover); 1398 goto abort_ret; 1399 } 1400 1401 list_work = kzalloc(sizeof(*list_work), GFP_ATOMIC); 1402 if (!list_work) { 1403 QEDI_ERR(&qedi->dbg_ctx, "Memory allocation failed\n"); 1404 goto abort_ret; 1405 } 1406 1407 qedi_cmd->type = TYPEIO; 1408 list_work->qedi_cmd = qedi_cmd; 1409 list_work->rtid = cmd->task_id; 1410 list_work->state = QEDI_WORK_SCHEDULED; 1411 qedi_cmd->list_tmf_work = list_work; 1412 1413 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1414 "Queue tmf work=%p, list node=%p, cid=0x%x, tmf flags=0x%x\n", 1415 list_work->ptr_tmf_work, list_work, qedi_conn->iscsi_conn_id, 1416 tmf_hdr->flags); 1417 1418 spin_lock_bh(&qedi_conn->tmf_work_lock); 1419 list_add_tail(&list_work->list, &qedi_conn->tmf_work_list); 1420 spin_unlock_bh(&qedi_conn->tmf_work_lock); 1421 1422 qedi_iscsi_cleanup_task(ctask, false); 1423 1424 rval = qedi_wait_for_cleanup_request(qedi, qedi_conn, ctask, qedi_cmd, 1425 list_work); 1426 if (rval == -1) { 1427 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1428 "FW cleanup got escalated, cid=0x%x\n", 1429 qedi_conn->iscsi_conn_id); 1430 goto ldel_exit; 1431 } 1432 1433 tid = qedi_get_task_idx(qedi); 1434 if (tid == -1) { 1435 QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n", 1436 qedi_conn->iscsi_conn_id); 1437 goto ldel_exit; 1438 } 1439 1440 qedi_cmd->task_id = tid; 1441 qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task); 1442 1443 abort_ret: 1444 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); 1445 return; 1446 1447 ldel_exit: 1448 spin_lock_bh(&qedi_conn->tmf_work_lock); 1449 if (!qedi_cmd->list_tmf_work) { 1450 list_del_init(&list_work->list); 1451 qedi_cmd->list_tmf_work = NULL; 1452 kfree(list_work); 1453 } 1454 spin_unlock_bh(&qedi_conn->tmf_work_lock); 1455 1456 spin_lock(&qedi_conn->list_lock); 1457 list_del_init(&cmd->io_cmd); 1458 qedi_conn->active_cmd_count--; 1459 spin_unlock(&qedi_conn->list_lock); 1460 1461 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); 1462 } 1463 1464 static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn, 1465 struct iscsi_task *mtask) 1466 { 1467 struct iscsi_tmf_request_hdr tmf_pdu_header; 1468 struct iscsi_task_params task_params; 1469 struct qedi_ctx *qedi = qedi_conn->qedi; 1470 struct e4_iscsi_task_context *fw_task_ctx; 1471 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 1472 struct iscsi_task *ctask; 1473 struct iscsi_tm *tmf_hdr; 1474 struct qedi_cmd *qedi_cmd; 1475 struct qedi_cmd *cmd; 1476 struct qedi_endpoint *ep; 1477 u32 scsi_lun[2]; 1478 s16 tid = 0; 1479 u16 sq_idx = 0; 1480 int rval = 0; 1481 1482 tmf_hdr = (struct iscsi_tm *)mtask->hdr; 1483 qedi_cmd = (struct qedi_cmd *)mtask->dd_data; 1484 ep = qedi_conn->ep; 1485 if (!ep) 1486 return -ENODEV; 1487 1488 tid = qedi_get_task_idx(qedi); 1489 if (tid == -1) 1490 return -ENOMEM; 1491 1492 fw_task_ctx = 1493 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1494 tid); 1495 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1496 1497 qedi_cmd->task_id = tid; 1498 1499 memset(&task_params, 0, sizeof(task_params)); 1500 memset(&tmf_pdu_header, 0, sizeof(tmf_pdu_header)); 1501 1502 /* Update header info */ 1503 qedi_update_itt_map(qedi, tid, mtask->itt, qedi_cmd); 1504 tmf_pdu_header.itt = qedi_set_itt(tid, get_itt(mtask->itt)); 1505 tmf_pdu_header.cmd_sn = be32_to_cpu(tmf_hdr->cmdsn); 1506 1507 memcpy(scsi_lun, &tmf_hdr->lun, sizeof(struct scsi_lun)); 1508 tmf_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); 1509 tmf_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); 1510 1511 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1512 ISCSI_TM_FUNC_ABORT_TASK) { 1513 ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt); 1514 if (!ctask || !ctask->sc) { 1515 QEDI_ERR(&qedi->dbg_ctx, 1516 "Could not get reference task\n"); 1517 return 0; 1518 } 1519 cmd = (struct qedi_cmd *)ctask->dd_data; 1520 tmf_pdu_header.rtt = 1521 qedi_set_itt(cmd->task_id, 1522 get_itt(tmf_hdr->rtt)); 1523 } else { 1524 tmf_pdu_header.rtt = ISCSI_RESERVED_TAG; 1525 } 1526 1527 tmf_pdu_header.opcode = tmf_hdr->opcode; 1528 tmf_pdu_header.function = tmf_hdr->flags; 1529 tmf_pdu_header.hdr_second_dword = ntoh24(tmf_hdr->dlength); 1530 tmf_pdu_header.ref_cmd_sn = be32_to_cpu(tmf_hdr->refcmdsn); 1531 1532 /* Fill fw input params */ 1533 task_params.context = fw_task_ctx; 1534 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1535 task_params.itid = tid; 1536 task_params.cq_rss_number = 0; 1537 task_params.tx_io_size = 0; 1538 task_params.rx_io_size = 0; 1539 1540 sq_idx = qedi_get_wqe_idx(qedi_conn); 1541 task_params.sqe = &ep->sq[sq_idx]; 1542 1543 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1544 rval = init_initiator_tmf_request_task(&task_params, 1545 &tmf_pdu_header); 1546 if (rval) 1547 return -1; 1548 1549 spin_lock(&qedi_conn->list_lock); 1550 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1551 qedi_cmd->io_cmd_in_list = true; 1552 qedi_conn->active_cmd_count++; 1553 spin_unlock(&qedi_conn->list_lock); 1554 1555 qedi_ring_doorbell(qedi_conn); 1556 return 0; 1557 } 1558 1559 int qedi_iscsi_abort_work(struct qedi_conn *qedi_conn, 1560 struct iscsi_task *mtask) 1561 { 1562 struct qedi_ctx *qedi = qedi_conn->qedi; 1563 struct iscsi_tm *tmf_hdr; 1564 struct qedi_cmd *qedi_cmd = (struct qedi_cmd *)mtask->dd_data; 1565 s16 tid = 0; 1566 1567 tmf_hdr = (struct iscsi_tm *)mtask->hdr; 1568 qedi_cmd->task = mtask; 1569 1570 /* If abort task then schedule the work and return */ 1571 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1572 ISCSI_TM_FUNC_ABORT_TASK) { 1573 qedi_cmd->state = CLEANUP_WAIT; 1574 INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_work); 1575 queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work); 1576 1577 } else if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1578 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) || 1579 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1580 ISCSI_TM_FUNC_TARGET_WARM_RESET) || 1581 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1582 ISCSI_TM_FUNC_TARGET_COLD_RESET)) { 1583 tid = qedi_get_task_idx(qedi); 1584 if (tid == -1) { 1585 QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n", 1586 qedi_conn->iscsi_conn_id); 1587 return -1; 1588 } 1589 qedi_cmd->task_id = tid; 1590 1591 qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task); 1592 1593 } else { 1594 QEDI_ERR(&qedi->dbg_ctx, "Invalid tmf, cid=0x%x\n", 1595 qedi_conn->iscsi_conn_id); 1596 return -1; 1597 } 1598 1599 return 0; 1600 } 1601 1602 int qedi_send_iscsi_text(struct qedi_conn *qedi_conn, 1603 struct iscsi_task *task) 1604 { 1605 struct iscsi_text_request_hdr text_request_pdu_header; 1606 struct scsi_sgl_task_params tx_sgl_task_params; 1607 struct scsi_sgl_task_params rx_sgl_task_params; 1608 struct iscsi_task_params task_params; 1609 struct e4_iscsi_task_context *fw_task_ctx; 1610 struct qedi_ctx *qedi = qedi_conn->qedi; 1611 struct iscsi_text *text_hdr; 1612 struct scsi_sge *req_sge = NULL; 1613 struct scsi_sge *resp_sge = NULL; 1614 struct qedi_cmd *qedi_cmd; 1615 struct qedi_endpoint *ep; 1616 s16 tid = 0; 1617 u16 sq_idx = 0; 1618 int rval = 0; 1619 1620 req_sge = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1621 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1622 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1623 text_hdr = (struct iscsi_text *)task->hdr; 1624 ep = qedi_conn->ep; 1625 1626 tid = qedi_get_task_idx(qedi); 1627 if (tid == -1) 1628 return -ENOMEM; 1629 1630 fw_task_ctx = 1631 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1632 tid); 1633 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1634 1635 qedi_cmd->task_id = tid; 1636 1637 memset(&task_params, 0, sizeof(task_params)); 1638 memset(&text_request_pdu_header, 0, sizeof(text_request_pdu_header)); 1639 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1640 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1641 1642 /* Update header info */ 1643 text_request_pdu_header.opcode = text_hdr->opcode; 1644 text_request_pdu_header.flags_attr = text_hdr->flags; 1645 1646 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1647 text_request_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1648 text_request_pdu_header.ttt = text_hdr->ttt; 1649 text_request_pdu_header.cmd_sn = be32_to_cpu(text_hdr->cmdsn); 1650 text_request_pdu_header.exp_stat_sn = be32_to_cpu(text_hdr->exp_statsn); 1651 text_request_pdu_header.hdr_second_dword = ntoh24(text_hdr->dlength); 1652 1653 /* Fill tx AHS and rx buffer */ 1654 tx_sgl_task_params.sgl = 1655 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1656 tx_sgl_task_params.sgl_phys_addr.lo = 1657 (u32)(qedi_conn->gen_pdu.req_dma_addr); 1658 tx_sgl_task_params.sgl_phys_addr.hi = 1659 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); 1660 tx_sgl_task_params.total_buffer_size = req_sge->sge_len; 1661 tx_sgl_task_params.num_sges = 1; 1662 1663 rx_sgl_task_params.sgl = 1664 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1665 rx_sgl_task_params.sgl_phys_addr.lo = 1666 (u32)(qedi_conn->gen_pdu.resp_dma_addr); 1667 rx_sgl_task_params.sgl_phys_addr.hi = 1668 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); 1669 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; 1670 rx_sgl_task_params.num_sges = 1; 1671 1672 /* Fill fw input params */ 1673 task_params.context = fw_task_ctx; 1674 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1675 task_params.itid = tid; 1676 task_params.cq_rss_number = 0; 1677 task_params.tx_io_size = ntoh24(text_hdr->dlength); 1678 task_params.rx_io_size = resp_sge->sge_len; 1679 1680 sq_idx = qedi_get_wqe_idx(qedi_conn); 1681 task_params.sqe = &ep->sq[sq_idx]; 1682 1683 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1684 rval = init_initiator_text_request_task(&task_params, 1685 &text_request_pdu_header, 1686 &tx_sgl_task_params, 1687 &rx_sgl_task_params); 1688 if (rval) 1689 return -1; 1690 1691 spin_lock(&qedi_conn->list_lock); 1692 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1693 qedi_cmd->io_cmd_in_list = true; 1694 qedi_conn->active_cmd_count++; 1695 spin_unlock(&qedi_conn->list_lock); 1696 1697 qedi_ring_doorbell(qedi_conn); 1698 return 0; 1699 } 1700 1701 int qedi_send_iscsi_nopout(struct qedi_conn *qedi_conn, 1702 struct iscsi_task *task, 1703 char *datap, int data_len, int unsol) 1704 { 1705 struct iscsi_nop_out_hdr nop_out_pdu_header; 1706 struct scsi_sgl_task_params tx_sgl_task_params; 1707 struct scsi_sgl_task_params rx_sgl_task_params; 1708 struct iscsi_task_params task_params; 1709 struct qedi_ctx *qedi = qedi_conn->qedi; 1710 struct e4_iscsi_task_context *fw_task_ctx; 1711 struct iscsi_nopout *nopout_hdr; 1712 struct scsi_sge *resp_sge = NULL; 1713 struct qedi_cmd *qedi_cmd; 1714 struct qedi_endpoint *ep; 1715 u32 scsi_lun[2]; 1716 s16 tid = 0; 1717 u16 sq_idx = 0; 1718 int rval = 0; 1719 1720 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1721 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1722 nopout_hdr = (struct iscsi_nopout *)task->hdr; 1723 ep = qedi_conn->ep; 1724 1725 tid = qedi_get_task_idx(qedi); 1726 if (tid == -1) 1727 return -ENOMEM; 1728 1729 fw_task_ctx = 1730 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1731 tid); 1732 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1733 1734 qedi_cmd->task_id = tid; 1735 1736 memset(&task_params, 0, sizeof(task_params)); 1737 memset(&nop_out_pdu_header, 0, sizeof(nop_out_pdu_header)); 1738 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1739 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1740 1741 /* Update header info */ 1742 nop_out_pdu_header.opcode = nopout_hdr->opcode; 1743 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_CONST1, 1); 1744 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_RSRV, 0); 1745 1746 memcpy(scsi_lun, &nopout_hdr->lun, sizeof(struct scsi_lun)); 1747 nop_out_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); 1748 nop_out_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); 1749 nop_out_pdu_header.cmd_sn = be32_to_cpu(nopout_hdr->cmdsn); 1750 nop_out_pdu_header.exp_stat_sn = be32_to_cpu(nopout_hdr->exp_statsn); 1751 1752 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1753 1754 if (nopout_hdr->ttt != ISCSI_TTT_ALL_ONES) { 1755 nop_out_pdu_header.itt = be32_to_cpu(nopout_hdr->itt); 1756 nop_out_pdu_header.ttt = be32_to_cpu(nopout_hdr->ttt); 1757 } else { 1758 nop_out_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1759 nop_out_pdu_header.ttt = ISCSI_TTT_ALL_ONES; 1760 1761 spin_lock(&qedi_conn->list_lock); 1762 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1763 qedi_cmd->io_cmd_in_list = true; 1764 qedi_conn->active_cmd_count++; 1765 spin_unlock(&qedi_conn->list_lock); 1766 } 1767 1768 /* Fill tx AHS and rx buffer */ 1769 if (data_len) { 1770 tx_sgl_task_params.sgl = 1771 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1772 tx_sgl_task_params.sgl_phys_addr.lo = 1773 (u32)(qedi_conn->gen_pdu.req_dma_addr); 1774 tx_sgl_task_params.sgl_phys_addr.hi = 1775 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); 1776 tx_sgl_task_params.total_buffer_size = data_len; 1777 tx_sgl_task_params.num_sges = 1; 1778 1779 rx_sgl_task_params.sgl = 1780 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1781 rx_sgl_task_params.sgl_phys_addr.lo = 1782 (u32)(qedi_conn->gen_pdu.resp_dma_addr); 1783 rx_sgl_task_params.sgl_phys_addr.hi = 1784 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); 1785 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; 1786 rx_sgl_task_params.num_sges = 1; 1787 } 1788 1789 /* Fill fw input params */ 1790 task_params.context = fw_task_ctx; 1791 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1792 task_params.itid = tid; 1793 task_params.cq_rss_number = 0; 1794 task_params.tx_io_size = data_len; 1795 task_params.rx_io_size = resp_sge->sge_len; 1796 1797 sq_idx = qedi_get_wqe_idx(qedi_conn); 1798 task_params.sqe = &ep->sq[sq_idx]; 1799 1800 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1801 rval = init_initiator_nop_out_task(&task_params, 1802 &nop_out_pdu_header, 1803 &tx_sgl_task_params, 1804 &rx_sgl_task_params); 1805 if (rval) 1806 return -1; 1807 1808 qedi_ring_doorbell(qedi_conn); 1809 return 0; 1810 } 1811 1812 static int qedi_split_bd(struct qedi_cmd *cmd, u64 addr, int sg_len, 1813 int bd_index) 1814 { 1815 struct scsi_sge *bd = cmd->io_tbl.sge_tbl; 1816 int frag_size, sg_frags; 1817 1818 sg_frags = 0; 1819 1820 while (sg_len) { 1821 if (addr % QEDI_PAGE_SIZE) 1822 frag_size = 1823 (QEDI_PAGE_SIZE - (addr % QEDI_PAGE_SIZE)); 1824 else 1825 frag_size = (sg_len > QEDI_BD_SPLIT_SZ) ? 0 : 1826 (sg_len % QEDI_BD_SPLIT_SZ); 1827 1828 if (frag_size == 0) 1829 frag_size = QEDI_BD_SPLIT_SZ; 1830 1831 bd[bd_index + sg_frags].sge_addr.lo = (addr & 0xffffffff); 1832 bd[bd_index + sg_frags].sge_addr.hi = (addr >> 32); 1833 bd[bd_index + sg_frags].sge_len = (u16)frag_size; 1834 QEDI_INFO(&cmd->conn->qedi->dbg_ctx, QEDI_LOG_IO, 1835 "split sge %d: addr=%llx, len=%x", 1836 (bd_index + sg_frags), addr, frag_size); 1837 1838 addr += (u64)frag_size; 1839 sg_frags++; 1840 sg_len -= frag_size; 1841 } 1842 return sg_frags; 1843 } 1844 1845 static int qedi_map_scsi_sg(struct qedi_ctx *qedi, struct qedi_cmd *cmd) 1846 { 1847 struct scsi_cmnd *sc = cmd->scsi_cmd; 1848 struct scsi_sge *bd = cmd->io_tbl.sge_tbl; 1849 struct scatterlist *sg; 1850 int byte_count = 0; 1851 int bd_count = 0; 1852 int sg_count; 1853 int sg_len; 1854 int sg_frags; 1855 u64 addr, end_addr; 1856 int i; 1857 1858 WARN_ON(scsi_sg_count(sc) > QEDI_ISCSI_MAX_BDS_PER_CMD); 1859 1860 sg_count = dma_map_sg(&qedi->pdev->dev, scsi_sglist(sc), 1861 scsi_sg_count(sc), sc->sc_data_direction); 1862 1863 /* 1864 * New condition to send single SGE as cached-SGL. 1865 * Single SGE with length less than 64K. 1866 */ 1867 sg = scsi_sglist(sc); 1868 if ((sg_count == 1) && (sg_dma_len(sg) <= MAX_SGLEN_FOR_CACHESGL)) { 1869 sg_len = sg_dma_len(sg); 1870 addr = (u64)sg_dma_address(sg); 1871 1872 bd[bd_count].sge_addr.lo = (addr & 0xffffffff); 1873 bd[bd_count].sge_addr.hi = (addr >> 32); 1874 bd[bd_count].sge_len = (u16)sg_len; 1875 1876 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 1877 "single-cached-sgl: bd_count:%d addr=%llx, len=%x", 1878 sg_count, addr, sg_len); 1879 1880 return ++bd_count; 1881 } 1882 1883 scsi_for_each_sg(sc, sg, sg_count, i) { 1884 sg_len = sg_dma_len(sg); 1885 addr = (u64)sg_dma_address(sg); 1886 end_addr = (addr + sg_len); 1887 1888 /* 1889 * first sg elem in the 'list', 1890 * check if end addr is page-aligned. 1891 */ 1892 if ((i == 0) && (sg_count > 1) && (end_addr % QEDI_PAGE_SIZE)) 1893 cmd->use_slowpath = true; 1894 1895 /* 1896 * last sg elem in the 'list', 1897 * check if start addr is page-aligned. 1898 */ 1899 else if ((i == (sg_count - 1)) && 1900 (sg_count > 1) && (addr % QEDI_PAGE_SIZE)) 1901 cmd->use_slowpath = true; 1902 1903 /* 1904 * middle sg elements in list, 1905 * check if start and end addr is page-aligned 1906 */ 1907 else if ((i != 0) && (i != (sg_count - 1)) && 1908 ((addr % QEDI_PAGE_SIZE) || 1909 (end_addr % QEDI_PAGE_SIZE))) 1910 cmd->use_slowpath = true; 1911 1912 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "sg[%d] size=0x%x", 1913 i, sg_len); 1914 1915 if (sg_len > QEDI_BD_SPLIT_SZ) { 1916 sg_frags = qedi_split_bd(cmd, addr, sg_len, bd_count); 1917 } else { 1918 sg_frags = 1; 1919 bd[bd_count].sge_addr.lo = addr & 0xffffffff; 1920 bd[bd_count].sge_addr.hi = addr >> 32; 1921 bd[bd_count].sge_len = sg_len; 1922 } 1923 byte_count += sg_len; 1924 bd_count += sg_frags; 1925 } 1926 1927 if (byte_count != scsi_bufflen(sc)) 1928 QEDI_ERR(&qedi->dbg_ctx, 1929 "byte_count = %d != scsi_bufflen = %d\n", byte_count, 1930 scsi_bufflen(sc)); 1931 else 1932 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "byte_count = %d\n", 1933 byte_count); 1934 1935 WARN_ON(byte_count != scsi_bufflen(sc)); 1936 1937 return bd_count; 1938 } 1939 1940 static void qedi_iscsi_map_sg_list(struct qedi_cmd *cmd) 1941 { 1942 int bd_count; 1943 struct scsi_cmnd *sc = cmd->scsi_cmd; 1944 1945 if (scsi_sg_count(sc)) { 1946 bd_count = qedi_map_scsi_sg(cmd->conn->qedi, cmd); 1947 if (bd_count == 0) 1948 return; 1949 } else { 1950 struct scsi_sge *bd = cmd->io_tbl.sge_tbl; 1951 1952 bd[0].sge_addr.lo = 0; 1953 bd[0].sge_addr.hi = 0; 1954 bd[0].sge_len = 0; 1955 bd_count = 0; 1956 } 1957 cmd->io_tbl.sge_valid = bd_count; 1958 } 1959 1960 static void qedi_cpy_scsi_cdb(struct scsi_cmnd *sc, u32 *dstp) 1961 { 1962 u32 dword; 1963 int lpcnt; 1964 u8 *srcp; 1965 1966 lpcnt = sc->cmd_len / sizeof(dword); 1967 srcp = (u8 *)sc->cmnd; 1968 while (lpcnt--) { 1969 memcpy(&dword, (const void *)srcp, 4); 1970 *dstp = cpu_to_be32(dword); 1971 srcp += 4; 1972 dstp++; 1973 } 1974 if (sc->cmd_len & 0x3) { 1975 dword = (u32)srcp[0] | ((u32)srcp[1] << 8); 1976 *dstp = cpu_to_be32(dword); 1977 } 1978 } 1979 1980 void qedi_trace_io(struct qedi_ctx *qedi, struct iscsi_task *task, 1981 u16 tid, int8_t direction) 1982 { 1983 struct qedi_io_log *io_log; 1984 struct iscsi_conn *conn = task->conn; 1985 struct qedi_conn *qedi_conn = conn->dd_data; 1986 struct scsi_cmnd *sc_cmd = task->sc; 1987 unsigned long flags; 1988 1989 spin_lock_irqsave(&qedi->io_trace_lock, flags); 1990 1991 io_log = &qedi->io_trace_buf[qedi->io_trace_idx]; 1992 io_log->direction = direction; 1993 io_log->task_id = tid; 1994 io_log->cid = qedi_conn->iscsi_conn_id; 1995 io_log->lun = sc_cmd->device->lun; 1996 io_log->op = sc_cmd->cmnd[0]; 1997 io_log->lba[0] = sc_cmd->cmnd[2]; 1998 io_log->lba[1] = sc_cmd->cmnd[3]; 1999 io_log->lba[2] = sc_cmd->cmnd[4]; 2000 io_log->lba[3] = sc_cmd->cmnd[5]; 2001 io_log->bufflen = scsi_bufflen(sc_cmd); 2002 io_log->sg_count = scsi_sg_count(sc_cmd); 2003 io_log->fast_sgs = qedi->fast_sgls; 2004 io_log->cached_sgs = qedi->cached_sgls; 2005 io_log->slow_sgs = qedi->slow_sgls; 2006 io_log->cached_sge = qedi->use_cached_sge; 2007 io_log->slow_sge = qedi->use_slow_sge; 2008 io_log->fast_sge = qedi->use_fast_sge; 2009 io_log->result = sc_cmd->result; 2010 io_log->jiffies = jiffies; 2011 io_log->blk_req_cpu = smp_processor_id(); 2012 2013 if (direction == QEDI_IO_TRACE_REQ) { 2014 /* For requests we only care about the submission CPU */ 2015 io_log->req_cpu = smp_processor_id() % qedi->num_queues; 2016 io_log->intr_cpu = 0; 2017 io_log->blk_rsp_cpu = 0; 2018 } else if (direction == QEDI_IO_TRACE_RSP) { 2019 io_log->req_cpu = smp_processor_id() % qedi->num_queues; 2020 io_log->intr_cpu = qedi->intr_cpu; 2021 io_log->blk_rsp_cpu = smp_processor_id(); 2022 } 2023 2024 qedi->io_trace_idx++; 2025 if (qedi->io_trace_idx == QEDI_IO_TRACE_SIZE) 2026 qedi->io_trace_idx = 0; 2027 2028 qedi->use_cached_sge = false; 2029 qedi->use_slow_sge = false; 2030 qedi->use_fast_sge = false; 2031 2032 spin_unlock_irqrestore(&qedi->io_trace_lock, flags); 2033 } 2034 2035 int qedi_iscsi_send_ioreq(struct iscsi_task *task) 2036 { 2037 struct iscsi_conn *conn = task->conn; 2038 struct iscsi_session *session = conn->session; 2039 struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session); 2040 struct qedi_ctx *qedi = iscsi_host_priv(shost); 2041 struct qedi_conn *qedi_conn = conn->dd_data; 2042 struct qedi_cmd *cmd = task->dd_data; 2043 struct scsi_cmnd *sc = task->sc; 2044 struct iscsi_cmd_hdr cmd_pdu_header; 2045 struct scsi_sgl_task_params tx_sgl_task_params; 2046 struct scsi_sgl_task_params rx_sgl_task_params; 2047 struct scsi_sgl_task_params *prx_sgl = NULL; 2048 struct scsi_sgl_task_params *ptx_sgl = NULL; 2049 struct iscsi_task_params task_params; 2050 struct iscsi_conn_params conn_params; 2051 struct scsi_initiator_cmd_params cmd_params; 2052 struct e4_iscsi_task_context *fw_task_ctx; 2053 struct iscsi_cls_conn *cls_conn; 2054 struct iscsi_scsi_req *hdr = (struct iscsi_scsi_req *)task->hdr; 2055 enum iscsi_task_type task_type = MAX_ISCSI_TASK_TYPE; 2056 struct qedi_endpoint *ep; 2057 u32 scsi_lun[2]; 2058 s16 tid = 0; 2059 u16 sq_idx = 0; 2060 u16 cq_idx; 2061 int rval = 0; 2062 2063 ep = qedi_conn->ep; 2064 cls_conn = qedi_conn->cls_conn; 2065 conn = cls_conn->dd_data; 2066 2067 qedi_iscsi_map_sg_list(cmd); 2068 int_to_scsilun(sc->device->lun, (struct scsi_lun *)scsi_lun); 2069 2070 tid = qedi_get_task_idx(qedi); 2071 if (tid == -1) 2072 return -ENOMEM; 2073 2074 fw_task_ctx = 2075 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 2076 tid); 2077 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 2078 2079 cmd->task_id = tid; 2080 2081 memset(&task_params, 0, sizeof(task_params)); 2082 memset(&cmd_pdu_header, 0, sizeof(cmd_pdu_header)); 2083 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 2084 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 2085 memset(&conn_params, 0, sizeof(conn_params)); 2086 memset(&cmd_params, 0, sizeof(cmd_params)); 2087 2088 cq_idx = smp_processor_id() % qedi->num_queues; 2089 /* Update header info */ 2090 SET_FIELD(cmd_pdu_header.flags_attr, ISCSI_CMD_HDR_ATTR, 2091 ISCSI_ATTR_SIMPLE); 2092 if (hdr->cdb[0] != TEST_UNIT_READY) { 2093 if (sc->sc_data_direction == DMA_TO_DEVICE) { 2094 SET_FIELD(cmd_pdu_header.flags_attr, 2095 ISCSI_CMD_HDR_WRITE, 1); 2096 task_type = ISCSI_TASK_TYPE_INITIATOR_WRITE; 2097 } else { 2098 SET_FIELD(cmd_pdu_header.flags_attr, 2099 ISCSI_CMD_HDR_READ, 1); 2100 task_type = ISCSI_TASK_TYPE_INITIATOR_READ; 2101 } 2102 } 2103 2104 cmd_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); 2105 cmd_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); 2106 2107 qedi_update_itt_map(qedi, tid, task->itt, cmd); 2108 cmd_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 2109 cmd_pdu_header.expected_transfer_length = cpu_to_be32(hdr->data_length); 2110 cmd_pdu_header.hdr_second_dword = ntoh24(hdr->dlength); 2111 cmd_pdu_header.cmd_sn = be32_to_cpu(hdr->cmdsn); 2112 cmd_pdu_header.hdr_first_byte = hdr->opcode; 2113 qedi_cpy_scsi_cdb(sc, (u32 *)cmd_pdu_header.cdb); 2114 2115 /* Fill tx AHS and rx buffer */ 2116 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) { 2117 tx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl; 2118 tx_sgl_task_params.sgl_phys_addr.lo = 2119 (u32)(cmd->io_tbl.sge_tbl_dma); 2120 tx_sgl_task_params.sgl_phys_addr.hi = 2121 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32); 2122 tx_sgl_task_params.total_buffer_size = scsi_bufflen(sc); 2123 tx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid; 2124 if (cmd->use_slowpath) 2125 tx_sgl_task_params.small_mid_sge = true; 2126 } else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) { 2127 rx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl; 2128 rx_sgl_task_params.sgl_phys_addr.lo = 2129 (u32)(cmd->io_tbl.sge_tbl_dma); 2130 rx_sgl_task_params.sgl_phys_addr.hi = 2131 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32); 2132 rx_sgl_task_params.total_buffer_size = scsi_bufflen(sc); 2133 rx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid; 2134 } 2135 2136 /* Add conn param */ 2137 conn_params.first_burst_length = conn->session->first_burst; 2138 conn_params.max_send_pdu_length = conn->max_xmit_dlength; 2139 conn_params.max_burst_length = conn->session->max_burst; 2140 if (conn->session->initial_r2t_en) 2141 conn_params.initial_r2t = true; 2142 if (conn->session->imm_data_en) 2143 conn_params.immediate_data = true; 2144 2145 /* Add cmd params */ 2146 cmd_params.sense_data_buffer_phys_addr.lo = (u32)cmd->sense_buffer_dma; 2147 cmd_params.sense_data_buffer_phys_addr.hi = 2148 (u32)((u64)cmd->sense_buffer_dma >> 32); 2149 /* Fill fw input params */ 2150 task_params.context = fw_task_ctx; 2151 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 2152 task_params.itid = tid; 2153 task_params.cq_rss_number = cq_idx; 2154 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) 2155 task_params.tx_io_size = scsi_bufflen(sc); 2156 else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) 2157 task_params.rx_io_size = scsi_bufflen(sc); 2158 2159 sq_idx = qedi_get_wqe_idx(qedi_conn); 2160 task_params.sqe = &ep->sq[sq_idx]; 2161 2162 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 2163 "%s: %s-SGL: sg_len=0x%x num_sges=0x%x first-sge-lo=0x%x first-sge-hi=0x%x\n", 2164 (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) ? 2165 "Write " : "Read ", (cmd->io_tbl.sge_valid == 1) ? 2166 "Single" : (cmd->use_slowpath ? "SLOW" : "FAST"), 2167 (u16)cmd->io_tbl.sge_valid, scsi_bufflen(sc), 2168 (u32)(cmd->io_tbl.sge_tbl_dma), 2169 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32)); 2170 2171 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 2172 2173 if (task_params.tx_io_size != 0) 2174 ptx_sgl = &tx_sgl_task_params; 2175 if (task_params.rx_io_size != 0) 2176 prx_sgl = &rx_sgl_task_params; 2177 2178 rval = init_initiator_rw_iscsi_task(&task_params, &conn_params, 2179 &cmd_params, &cmd_pdu_header, 2180 ptx_sgl, prx_sgl, 2181 NULL); 2182 if (rval) 2183 return -1; 2184 2185 spin_lock(&qedi_conn->list_lock); 2186 list_add_tail(&cmd->io_cmd, &qedi_conn->active_cmd_list); 2187 cmd->io_cmd_in_list = true; 2188 qedi_conn->active_cmd_count++; 2189 spin_unlock(&qedi_conn->list_lock); 2190 2191 qedi_ring_doorbell(qedi_conn); 2192 return 0; 2193 } 2194 2195 int qedi_iscsi_cleanup_task(struct iscsi_task *task, bool mark_cmd_node_deleted) 2196 { 2197 struct iscsi_task_params task_params; 2198 struct qedi_endpoint *ep; 2199 struct iscsi_conn *conn = task->conn; 2200 struct qedi_conn *qedi_conn = conn->dd_data; 2201 struct qedi_cmd *cmd = task->dd_data; 2202 u16 sq_idx = 0; 2203 int rval = 0; 2204 2205 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 2206 "issue cleanup tid=0x%x itt=0x%x task_state=%d cmd_state=0%x cid=0x%x\n", 2207 cmd->task_id, get_itt(task->itt), task->state, 2208 cmd->state, qedi_conn->iscsi_conn_id); 2209 2210 memset(&task_params, 0, sizeof(task_params)); 2211 ep = qedi_conn->ep; 2212 2213 sq_idx = qedi_get_wqe_idx(qedi_conn); 2214 2215 task_params.sqe = &ep->sq[sq_idx]; 2216 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 2217 task_params.itid = cmd->task_id; 2218 2219 rval = init_cleanup_task(&task_params); 2220 if (rval) 2221 return rval; 2222 2223 qedi_ring_doorbell(qedi_conn); 2224 return 0; 2225 } 2226