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 mmiowb(); 989 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_MP_REQ, 990 "prod_idx=0x%x, fw_prod_idx=0x%x, cid=0x%x\n", 991 qedi_conn->ep->sq_prod_idx, qedi_conn->ep->fw_sq_prod_idx, 992 qedi_conn->iscsi_conn_id); 993 } 994 995 static u16 qedi_get_wqe_idx(struct qedi_conn *qedi_conn) 996 { 997 struct qedi_endpoint *ep; 998 u16 rval; 999 1000 ep = qedi_conn->ep; 1001 rval = ep->sq_prod_idx; 1002 1003 /* Increament SQ index */ 1004 ep->sq_prod_idx++; 1005 ep->fw_sq_prod_idx++; 1006 if (ep->sq_prod_idx == QEDI_SQ_SIZE) 1007 ep->sq_prod_idx = 0; 1008 1009 return rval; 1010 } 1011 1012 int qedi_send_iscsi_login(struct qedi_conn *qedi_conn, 1013 struct iscsi_task *task) 1014 { 1015 struct iscsi_login_req_hdr login_req_pdu_header; 1016 struct scsi_sgl_task_params tx_sgl_task_params; 1017 struct scsi_sgl_task_params rx_sgl_task_params; 1018 struct iscsi_task_params task_params; 1019 struct e4_iscsi_task_context *fw_task_ctx; 1020 struct qedi_ctx *qedi = qedi_conn->qedi; 1021 struct iscsi_login_req *login_hdr; 1022 struct scsi_sge *resp_sge = NULL; 1023 struct qedi_cmd *qedi_cmd; 1024 struct qedi_endpoint *ep; 1025 s16 tid = 0; 1026 u16 sq_idx = 0; 1027 int rval = 0; 1028 1029 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1030 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1031 ep = qedi_conn->ep; 1032 login_hdr = (struct iscsi_login_req *)task->hdr; 1033 1034 tid = qedi_get_task_idx(qedi); 1035 if (tid == -1) 1036 return -ENOMEM; 1037 1038 fw_task_ctx = 1039 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1040 tid); 1041 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1042 1043 qedi_cmd->task_id = tid; 1044 1045 memset(&task_params, 0, sizeof(task_params)); 1046 memset(&login_req_pdu_header, 0, sizeof(login_req_pdu_header)); 1047 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1048 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1049 /* Update header info */ 1050 login_req_pdu_header.opcode = login_hdr->opcode; 1051 login_req_pdu_header.version_min = login_hdr->min_version; 1052 login_req_pdu_header.version_max = login_hdr->max_version; 1053 login_req_pdu_header.flags_attr = login_hdr->flags; 1054 login_req_pdu_header.isid_tabc = swab32p((u32 *)login_hdr->isid); 1055 login_req_pdu_header.isid_d = swab16p((u16 *)&login_hdr->isid[4]); 1056 1057 login_req_pdu_header.tsih = login_hdr->tsih; 1058 login_req_pdu_header.hdr_second_dword = ntoh24(login_hdr->dlength); 1059 1060 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1061 login_req_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1062 login_req_pdu_header.cid = qedi_conn->iscsi_conn_id; 1063 login_req_pdu_header.cmd_sn = be32_to_cpu(login_hdr->cmdsn); 1064 login_req_pdu_header.exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn); 1065 login_req_pdu_header.exp_stat_sn = 0; 1066 1067 /* Fill tx AHS and rx buffer */ 1068 tx_sgl_task_params.sgl = 1069 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1070 tx_sgl_task_params.sgl_phys_addr.lo = 1071 (u32)(qedi_conn->gen_pdu.req_dma_addr); 1072 tx_sgl_task_params.sgl_phys_addr.hi = 1073 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); 1074 tx_sgl_task_params.total_buffer_size = ntoh24(login_hdr->dlength); 1075 tx_sgl_task_params.num_sges = 1; 1076 1077 rx_sgl_task_params.sgl = 1078 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1079 rx_sgl_task_params.sgl_phys_addr.lo = 1080 (u32)(qedi_conn->gen_pdu.resp_dma_addr); 1081 rx_sgl_task_params.sgl_phys_addr.hi = 1082 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); 1083 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; 1084 rx_sgl_task_params.num_sges = 1; 1085 1086 /* Fill fw input params */ 1087 task_params.context = fw_task_ctx; 1088 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1089 task_params.itid = tid; 1090 task_params.cq_rss_number = 0; 1091 task_params.tx_io_size = ntoh24(login_hdr->dlength); 1092 task_params.rx_io_size = resp_sge->sge_len; 1093 1094 sq_idx = qedi_get_wqe_idx(qedi_conn); 1095 task_params.sqe = &ep->sq[sq_idx]; 1096 1097 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1098 rval = init_initiator_login_request_task(&task_params, 1099 &login_req_pdu_header, 1100 &tx_sgl_task_params, 1101 &rx_sgl_task_params); 1102 if (rval) 1103 return -1; 1104 1105 spin_lock(&qedi_conn->list_lock); 1106 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1107 qedi_cmd->io_cmd_in_list = true; 1108 qedi_conn->active_cmd_count++; 1109 spin_unlock(&qedi_conn->list_lock); 1110 1111 qedi_ring_doorbell(qedi_conn); 1112 return 0; 1113 } 1114 1115 int qedi_send_iscsi_logout(struct qedi_conn *qedi_conn, 1116 struct iscsi_task *task) 1117 { 1118 struct iscsi_logout_req_hdr logout_pdu_header; 1119 struct scsi_sgl_task_params tx_sgl_task_params; 1120 struct scsi_sgl_task_params rx_sgl_task_params; 1121 struct iscsi_task_params task_params; 1122 struct e4_iscsi_task_context *fw_task_ctx; 1123 struct iscsi_logout *logout_hdr = NULL; 1124 struct qedi_ctx *qedi = qedi_conn->qedi; 1125 struct qedi_cmd *qedi_cmd; 1126 struct qedi_endpoint *ep; 1127 s16 tid = 0; 1128 u16 sq_idx = 0; 1129 int rval = 0; 1130 1131 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1132 logout_hdr = (struct iscsi_logout *)task->hdr; 1133 ep = qedi_conn->ep; 1134 1135 tid = qedi_get_task_idx(qedi); 1136 if (tid == -1) 1137 return -ENOMEM; 1138 1139 fw_task_ctx = 1140 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1141 tid); 1142 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1143 1144 qedi_cmd->task_id = tid; 1145 1146 memset(&task_params, 0, sizeof(task_params)); 1147 memset(&logout_pdu_header, 0, sizeof(logout_pdu_header)); 1148 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1149 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1150 1151 /* Update header info */ 1152 logout_pdu_header.opcode = logout_hdr->opcode; 1153 logout_pdu_header.reason_code = 0x80 | logout_hdr->flags; 1154 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1155 logout_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1156 logout_pdu_header.exp_stat_sn = be32_to_cpu(logout_hdr->exp_statsn); 1157 logout_pdu_header.cmd_sn = be32_to_cpu(logout_hdr->cmdsn); 1158 logout_pdu_header.cid = qedi_conn->iscsi_conn_id; 1159 1160 /* Fill fw input params */ 1161 task_params.context = fw_task_ctx; 1162 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1163 task_params.itid = tid; 1164 task_params.cq_rss_number = 0; 1165 task_params.tx_io_size = 0; 1166 task_params.rx_io_size = 0; 1167 1168 sq_idx = qedi_get_wqe_idx(qedi_conn); 1169 task_params.sqe = &ep->sq[sq_idx]; 1170 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1171 1172 rval = init_initiator_logout_request_task(&task_params, 1173 &logout_pdu_header, 1174 NULL, NULL); 1175 if (rval) 1176 return -1; 1177 1178 spin_lock(&qedi_conn->list_lock); 1179 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1180 qedi_cmd->io_cmd_in_list = true; 1181 qedi_conn->active_cmd_count++; 1182 spin_unlock(&qedi_conn->list_lock); 1183 1184 qedi_ring_doorbell(qedi_conn); 1185 return 0; 1186 } 1187 1188 int qedi_cleanup_all_io(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn, 1189 struct iscsi_task *task, bool in_recovery) 1190 { 1191 int rval; 1192 struct iscsi_task *ctask; 1193 struct qedi_cmd *cmd, *cmd_tmp; 1194 struct iscsi_tm *tmf_hdr; 1195 unsigned int lun = 0; 1196 bool lun_reset = false; 1197 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 1198 struct iscsi_session *session = conn->session; 1199 1200 /* From recovery, task is NULL or from tmf resp valid task */ 1201 if (task) { 1202 tmf_hdr = (struct iscsi_tm *)task->hdr; 1203 1204 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1205 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) { 1206 lun_reset = true; 1207 lun = scsilun_to_int(&tmf_hdr->lun); 1208 } 1209 } 1210 1211 qedi_conn->cmd_cleanup_req = 0; 1212 qedi_conn->cmd_cleanup_cmpl = 0; 1213 1214 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1215 "active_cmd_count=%d, cid=0x%x, in_recovery=%d, lun_reset=%d\n", 1216 qedi_conn->active_cmd_count, qedi_conn->iscsi_conn_id, 1217 in_recovery, lun_reset); 1218 1219 if (lun_reset) 1220 spin_lock_bh(&session->back_lock); 1221 1222 spin_lock(&qedi_conn->list_lock); 1223 1224 list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list, 1225 io_cmd) { 1226 ctask = cmd->task; 1227 if (ctask == task) 1228 continue; 1229 1230 if (lun_reset) { 1231 if (cmd->scsi_cmd && cmd->scsi_cmd->device) { 1232 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1233 "tid=0x%x itt=0x%x scsi_cmd_ptr=%p device=%p task_state=%d cmd_state=0%x cid=0x%x\n", 1234 cmd->task_id, get_itt(ctask->itt), 1235 cmd->scsi_cmd, cmd->scsi_cmd->device, 1236 ctask->state, cmd->state, 1237 qedi_conn->iscsi_conn_id); 1238 if (cmd->scsi_cmd->device->lun != lun) 1239 continue; 1240 } 1241 } 1242 qedi_conn->cmd_cleanup_req++; 1243 qedi_iscsi_cleanup_task(ctask, true); 1244 1245 list_del_init(&cmd->io_cmd); 1246 qedi_conn->active_cmd_count--; 1247 QEDI_WARN(&qedi->dbg_ctx, 1248 "Deleted active cmd list node io_cmd=%p, cid=0x%x\n", 1249 &cmd->io_cmd, qedi_conn->iscsi_conn_id); 1250 } 1251 1252 spin_unlock(&qedi_conn->list_lock); 1253 1254 if (lun_reset) 1255 spin_unlock_bh(&session->back_lock); 1256 1257 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1258 "cmd_cleanup_req=%d, cid=0x%x\n", 1259 qedi_conn->cmd_cleanup_req, 1260 qedi_conn->iscsi_conn_id); 1261 1262 rval = wait_event_interruptible_timeout(qedi_conn->wait_queue, 1263 ((qedi_conn->cmd_cleanup_req == 1264 qedi_conn->cmd_cleanup_cmpl) || 1265 qedi_conn->ep), 1266 5 * HZ); 1267 if (rval) { 1268 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1269 "i/o cmd_cleanup_req=%d, equal to cmd_cleanup_cmpl=%d, cid=0x%x\n", 1270 qedi_conn->cmd_cleanup_req, 1271 qedi_conn->cmd_cleanup_cmpl, 1272 qedi_conn->iscsi_conn_id); 1273 1274 return 0; 1275 } 1276 1277 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1278 "i/o cmd_cleanup_req=%d, not equal to cmd_cleanup_cmpl=%d, cid=0x%x\n", 1279 qedi_conn->cmd_cleanup_req, 1280 qedi_conn->cmd_cleanup_cmpl, 1281 qedi_conn->iscsi_conn_id); 1282 1283 iscsi_host_for_each_session(qedi->shost, 1284 qedi_mark_device_missing); 1285 qedi_ops->common->drain(qedi->cdev); 1286 1287 /* Enable IOs for all other sessions except current.*/ 1288 if (!wait_event_interruptible_timeout(qedi_conn->wait_queue, 1289 (qedi_conn->cmd_cleanup_req == 1290 qedi_conn->cmd_cleanup_cmpl), 1291 5 * HZ)) { 1292 iscsi_host_for_each_session(qedi->shost, 1293 qedi_mark_device_available); 1294 return -1; 1295 } 1296 1297 iscsi_host_for_each_session(qedi->shost, 1298 qedi_mark_device_available); 1299 1300 return 0; 1301 } 1302 1303 void qedi_clearsq(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn, 1304 struct iscsi_task *task) 1305 { 1306 struct qedi_endpoint *qedi_ep; 1307 int rval; 1308 1309 qedi_ep = qedi_conn->ep; 1310 qedi_conn->cmd_cleanup_req = 0; 1311 qedi_conn->cmd_cleanup_cmpl = 0; 1312 1313 if (!qedi_ep) { 1314 QEDI_WARN(&qedi->dbg_ctx, 1315 "Cannot proceed, ep already disconnected, cid=0x%x\n", 1316 qedi_conn->iscsi_conn_id); 1317 return; 1318 } 1319 1320 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1321 "Clearing SQ for cid=0x%x, conn=%p, ep=%p\n", 1322 qedi_conn->iscsi_conn_id, qedi_conn, qedi_ep); 1323 1324 qedi_ops->clear_sq(qedi->cdev, qedi_ep->handle); 1325 1326 rval = qedi_cleanup_all_io(qedi, qedi_conn, task, true); 1327 if (rval) { 1328 QEDI_ERR(&qedi->dbg_ctx, 1329 "fatal error, need hard reset, cid=0x%x\n", 1330 qedi_conn->iscsi_conn_id); 1331 WARN_ON(1); 1332 } 1333 } 1334 1335 static int qedi_wait_for_cleanup_request(struct qedi_ctx *qedi, 1336 struct qedi_conn *qedi_conn, 1337 struct iscsi_task *task, 1338 struct qedi_cmd *qedi_cmd, 1339 struct qedi_work_map *list_work) 1340 { 1341 struct qedi_cmd *cmd = (struct qedi_cmd *)task->dd_data; 1342 int wait; 1343 1344 wait = wait_event_interruptible_timeout(qedi_conn->wait_queue, 1345 ((qedi_cmd->state == 1346 CLEANUP_RECV) || 1347 ((qedi_cmd->type == TYPEIO) && 1348 (cmd->state == 1349 RESPONSE_RECEIVED))), 1350 5 * HZ); 1351 if (!wait) { 1352 qedi_cmd->state = CLEANUP_WAIT_FAILED; 1353 1354 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1355 "Cleanup timedout tid=0x%x, issue connection recovery, cid=0x%x\n", 1356 cmd->task_id, qedi_conn->iscsi_conn_id); 1357 1358 return -1; 1359 } 1360 return 0; 1361 } 1362 1363 static void qedi_tmf_work(struct work_struct *work) 1364 { 1365 struct qedi_cmd *qedi_cmd = 1366 container_of(work, struct qedi_cmd, tmf_work); 1367 struct qedi_conn *qedi_conn = qedi_cmd->conn; 1368 struct qedi_ctx *qedi = qedi_conn->qedi; 1369 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 1370 struct iscsi_cls_session *cls_sess; 1371 struct qedi_work_map *list_work = NULL; 1372 struct iscsi_task *mtask; 1373 struct qedi_cmd *cmd; 1374 struct iscsi_task *ctask; 1375 struct iscsi_tm *tmf_hdr; 1376 s16 rval = 0; 1377 s16 tid = 0; 1378 1379 mtask = qedi_cmd->task; 1380 tmf_hdr = (struct iscsi_tm *)mtask->hdr; 1381 cls_sess = iscsi_conn_to_session(qedi_conn->cls_conn); 1382 set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); 1383 1384 ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt); 1385 if (!ctask || !ctask->sc) { 1386 QEDI_ERR(&qedi->dbg_ctx, "Task already completed\n"); 1387 goto abort_ret; 1388 } 1389 1390 cmd = (struct qedi_cmd *)ctask->dd_data; 1391 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1392 "Abort tmf rtt=0x%x, cmd itt=0x%x, cmd tid=0x%x, cid=0x%x\n", 1393 get_itt(tmf_hdr->rtt), get_itt(ctask->itt), cmd->task_id, 1394 qedi_conn->iscsi_conn_id); 1395 1396 if (qedi_do_not_recover) { 1397 QEDI_ERR(&qedi->dbg_ctx, "DONT SEND CLEANUP/ABORT %d\n", 1398 qedi_do_not_recover); 1399 goto abort_ret; 1400 } 1401 1402 list_work = kzalloc(sizeof(*list_work), GFP_ATOMIC); 1403 if (!list_work) { 1404 QEDI_ERR(&qedi->dbg_ctx, "Memory allocation failed\n"); 1405 goto abort_ret; 1406 } 1407 1408 qedi_cmd->type = TYPEIO; 1409 list_work->qedi_cmd = qedi_cmd; 1410 list_work->rtid = cmd->task_id; 1411 list_work->state = QEDI_WORK_SCHEDULED; 1412 qedi_cmd->list_tmf_work = list_work; 1413 1414 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1415 "Queue tmf work=%p, list node=%p, cid=0x%x, tmf flags=0x%x\n", 1416 list_work->ptr_tmf_work, list_work, qedi_conn->iscsi_conn_id, 1417 tmf_hdr->flags); 1418 1419 spin_lock_bh(&qedi_conn->tmf_work_lock); 1420 list_add_tail(&list_work->list, &qedi_conn->tmf_work_list); 1421 spin_unlock_bh(&qedi_conn->tmf_work_lock); 1422 1423 qedi_iscsi_cleanup_task(ctask, false); 1424 1425 rval = qedi_wait_for_cleanup_request(qedi, qedi_conn, ctask, qedi_cmd, 1426 list_work); 1427 if (rval == -1) { 1428 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1429 "FW cleanup got escalated, cid=0x%x\n", 1430 qedi_conn->iscsi_conn_id); 1431 goto ldel_exit; 1432 } 1433 1434 tid = qedi_get_task_idx(qedi); 1435 if (tid == -1) { 1436 QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n", 1437 qedi_conn->iscsi_conn_id); 1438 goto ldel_exit; 1439 } 1440 1441 qedi_cmd->task_id = tid; 1442 qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task); 1443 1444 abort_ret: 1445 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); 1446 return; 1447 1448 ldel_exit: 1449 spin_lock_bh(&qedi_conn->tmf_work_lock); 1450 if (!qedi_cmd->list_tmf_work) { 1451 list_del_init(&list_work->list); 1452 qedi_cmd->list_tmf_work = NULL; 1453 kfree(list_work); 1454 } 1455 spin_unlock_bh(&qedi_conn->tmf_work_lock); 1456 1457 spin_lock(&qedi_conn->list_lock); 1458 list_del_init(&cmd->io_cmd); 1459 qedi_conn->active_cmd_count--; 1460 spin_unlock(&qedi_conn->list_lock); 1461 1462 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); 1463 } 1464 1465 static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn, 1466 struct iscsi_task *mtask) 1467 { 1468 struct iscsi_tmf_request_hdr tmf_pdu_header; 1469 struct iscsi_task_params task_params; 1470 struct qedi_ctx *qedi = qedi_conn->qedi; 1471 struct e4_iscsi_task_context *fw_task_ctx; 1472 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 1473 struct iscsi_task *ctask; 1474 struct iscsi_tm *tmf_hdr; 1475 struct qedi_cmd *qedi_cmd; 1476 struct qedi_cmd *cmd; 1477 struct qedi_endpoint *ep; 1478 u32 scsi_lun[2]; 1479 s16 tid = 0; 1480 u16 sq_idx = 0; 1481 int rval = 0; 1482 1483 tmf_hdr = (struct iscsi_tm *)mtask->hdr; 1484 qedi_cmd = (struct qedi_cmd *)mtask->dd_data; 1485 ep = qedi_conn->ep; 1486 if (!ep) 1487 return -ENODEV; 1488 1489 tid = qedi_get_task_idx(qedi); 1490 if (tid == -1) 1491 return -ENOMEM; 1492 1493 fw_task_ctx = 1494 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1495 tid); 1496 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1497 1498 qedi_cmd->task_id = tid; 1499 1500 memset(&task_params, 0, sizeof(task_params)); 1501 memset(&tmf_pdu_header, 0, sizeof(tmf_pdu_header)); 1502 1503 /* Update header info */ 1504 qedi_update_itt_map(qedi, tid, mtask->itt, qedi_cmd); 1505 tmf_pdu_header.itt = qedi_set_itt(tid, get_itt(mtask->itt)); 1506 tmf_pdu_header.cmd_sn = be32_to_cpu(tmf_hdr->cmdsn); 1507 1508 memcpy(scsi_lun, &tmf_hdr->lun, sizeof(struct scsi_lun)); 1509 tmf_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); 1510 tmf_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); 1511 1512 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1513 ISCSI_TM_FUNC_ABORT_TASK) { 1514 ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt); 1515 if (!ctask || !ctask->sc) { 1516 QEDI_ERR(&qedi->dbg_ctx, 1517 "Could not get reference task\n"); 1518 return 0; 1519 } 1520 cmd = (struct qedi_cmd *)ctask->dd_data; 1521 tmf_pdu_header.rtt = 1522 qedi_set_itt(cmd->task_id, 1523 get_itt(tmf_hdr->rtt)); 1524 } else { 1525 tmf_pdu_header.rtt = ISCSI_RESERVED_TAG; 1526 } 1527 1528 tmf_pdu_header.opcode = tmf_hdr->opcode; 1529 tmf_pdu_header.function = tmf_hdr->flags; 1530 tmf_pdu_header.hdr_second_dword = ntoh24(tmf_hdr->dlength); 1531 tmf_pdu_header.ref_cmd_sn = be32_to_cpu(tmf_hdr->refcmdsn); 1532 1533 /* Fill fw input params */ 1534 task_params.context = fw_task_ctx; 1535 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1536 task_params.itid = tid; 1537 task_params.cq_rss_number = 0; 1538 task_params.tx_io_size = 0; 1539 task_params.rx_io_size = 0; 1540 1541 sq_idx = qedi_get_wqe_idx(qedi_conn); 1542 task_params.sqe = &ep->sq[sq_idx]; 1543 1544 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1545 rval = init_initiator_tmf_request_task(&task_params, 1546 &tmf_pdu_header); 1547 if (rval) 1548 return -1; 1549 1550 spin_lock(&qedi_conn->list_lock); 1551 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1552 qedi_cmd->io_cmd_in_list = true; 1553 qedi_conn->active_cmd_count++; 1554 spin_unlock(&qedi_conn->list_lock); 1555 1556 qedi_ring_doorbell(qedi_conn); 1557 return 0; 1558 } 1559 1560 int qedi_iscsi_abort_work(struct qedi_conn *qedi_conn, 1561 struct iscsi_task *mtask) 1562 { 1563 struct qedi_ctx *qedi = qedi_conn->qedi; 1564 struct iscsi_tm *tmf_hdr; 1565 struct qedi_cmd *qedi_cmd = (struct qedi_cmd *)mtask->dd_data; 1566 s16 tid = 0; 1567 1568 tmf_hdr = (struct iscsi_tm *)mtask->hdr; 1569 qedi_cmd->task = mtask; 1570 1571 /* If abort task then schedule the work and return */ 1572 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1573 ISCSI_TM_FUNC_ABORT_TASK) { 1574 qedi_cmd->state = CLEANUP_WAIT; 1575 INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_work); 1576 queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work); 1577 1578 } else if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1579 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) || 1580 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1581 ISCSI_TM_FUNC_TARGET_WARM_RESET) || 1582 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1583 ISCSI_TM_FUNC_TARGET_COLD_RESET)) { 1584 tid = qedi_get_task_idx(qedi); 1585 if (tid == -1) { 1586 QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n", 1587 qedi_conn->iscsi_conn_id); 1588 return -1; 1589 } 1590 qedi_cmd->task_id = tid; 1591 1592 qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task); 1593 1594 } else { 1595 QEDI_ERR(&qedi->dbg_ctx, "Invalid tmf, cid=0x%x\n", 1596 qedi_conn->iscsi_conn_id); 1597 return -1; 1598 } 1599 1600 return 0; 1601 } 1602 1603 int qedi_send_iscsi_text(struct qedi_conn *qedi_conn, 1604 struct iscsi_task *task) 1605 { 1606 struct iscsi_text_request_hdr text_request_pdu_header; 1607 struct scsi_sgl_task_params tx_sgl_task_params; 1608 struct scsi_sgl_task_params rx_sgl_task_params; 1609 struct iscsi_task_params task_params; 1610 struct e4_iscsi_task_context *fw_task_ctx; 1611 struct qedi_ctx *qedi = qedi_conn->qedi; 1612 struct iscsi_text *text_hdr; 1613 struct scsi_sge *req_sge = NULL; 1614 struct scsi_sge *resp_sge = NULL; 1615 struct qedi_cmd *qedi_cmd; 1616 struct qedi_endpoint *ep; 1617 s16 tid = 0; 1618 u16 sq_idx = 0; 1619 int rval = 0; 1620 1621 req_sge = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1622 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1623 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1624 text_hdr = (struct iscsi_text *)task->hdr; 1625 ep = qedi_conn->ep; 1626 1627 tid = qedi_get_task_idx(qedi); 1628 if (tid == -1) 1629 return -ENOMEM; 1630 1631 fw_task_ctx = 1632 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1633 tid); 1634 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1635 1636 qedi_cmd->task_id = tid; 1637 1638 memset(&task_params, 0, sizeof(task_params)); 1639 memset(&text_request_pdu_header, 0, sizeof(text_request_pdu_header)); 1640 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1641 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1642 1643 /* Update header info */ 1644 text_request_pdu_header.opcode = text_hdr->opcode; 1645 text_request_pdu_header.flags_attr = text_hdr->flags; 1646 1647 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1648 text_request_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1649 text_request_pdu_header.ttt = text_hdr->ttt; 1650 text_request_pdu_header.cmd_sn = be32_to_cpu(text_hdr->cmdsn); 1651 text_request_pdu_header.exp_stat_sn = be32_to_cpu(text_hdr->exp_statsn); 1652 text_request_pdu_header.hdr_second_dword = ntoh24(text_hdr->dlength); 1653 1654 /* Fill tx AHS and rx buffer */ 1655 tx_sgl_task_params.sgl = 1656 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1657 tx_sgl_task_params.sgl_phys_addr.lo = 1658 (u32)(qedi_conn->gen_pdu.req_dma_addr); 1659 tx_sgl_task_params.sgl_phys_addr.hi = 1660 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); 1661 tx_sgl_task_params.total_buffer_size = req_sge->sge_len; 1662 tx_sgl_task_params.num_sges = 1; 1663 1664 rx_sgl_task_params.sgl = 1665 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1666 rx_sgl_task_params.sgl_phys_addr.lo = 1667 (u32)(qedi_conn->gen_pdu.resp_dma_addr); 1668 rx_sgl_task_params.sgl_phys_addr.hi = 1669 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); 1670 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; 1671 rx_sgl_task_params.num_sges = 1; 1672 1673 /* Fill fw input params */ 1674 task_params.context = fw_task_ctx; 1675 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1676 task_params.itid = tid; 1677 task_params.cq_rss_number = 0; 1678 task_params.tx_io_size = ntoh24(text_hdr->dlength); 1679 task_params.rx_io_size = resp_sge->sge_len; 1680 1681 sq_idx = qedi_get_wqe_idx(qedi_conn); 1682 task_params.sqe = &ep->sq[sq_idx]; 1683 1684 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1685 rval = init_initiator_text_request_task(&task_params, 1686 &text_request_pdu_header, 1687 &tx_sgl_task_params, 1688 &rx_sgl_task_params); 1689 if (rval) 1690 return -1; 1691 1692 spin_lock(&qedi_conn->list_lock); 1693 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1694 qedi_cmd->io_cmd_in_list = true; 1695 qedi_conn->active_cmd_count++; 1696 spin_unlock(&qedi_conn->list_lock); 1697 1698 qedi_ring_doorbell(qedi_conn); 1699 return 0; 1700 } 1701 1702 int qedi_send_iscsi_nopout(struct qedi_conn *qedi_conn, 1703 struct iscsi_task *task, 1704 char *datap, int data_len, int unsol) 1705 { 1706 struct iscsi_nop_out_hdr nop_out_pdu_header; 1707 struct scsi_sgl_task_params tx_sgl_task_params; 1708 struct scsi_sgl_task_params rx_sgl_task_params; 1709 struct iscsi_task_params task_params; 1710 struct qedi_ctx *qedi = qedi_conn->qedi; 1711 struct e4_iscsi_task_context *fw_task_ctx; 1712 struct iscsi_nopout *nopout_hdr; 1713 struct scsi_sge *resp_sge = NULL; 1714 struct qedi_cmd *qedi_cmd; 1715 struct qedi_endpoint *ep; 1716 u32 scsi_lun[2]; 1717 s16 tid = 0; 1718 u16 sq_idx = 0; 1719 int rval = 0; 1720 1721 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1722 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1723 nopout_hdr = (struct iscsi_nopout *)task->hdr; 1724 ep = qedi_conn->ep; 1725 1726 tid = qedi_get_task_idx(qedi); 1727 if (tid == -1) 1728 return -ENOMEM; 1729 1730 fw_task_ctx = 1731 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1732 tid); 1733 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1734 1735 qedi_cmd->task_id = tid; 1736 1737 memset(&task_params, 0, sizeof(task_params)); 1738 memset(&nop_out_pdu_header, 0, sizeof(nop_out_pdu_header)); 1739 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1740 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1741 1742 /* Update header info */ 1743 nop_out_pdu_header.opcode = nopout_hdr->opcode; 1744 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_CONST1, 1); 1745 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_RSRV, 0); 1746 1747 memcpy(scsi_lun, &nopout_hdr->lun, sizeof(struct scsi_lun)); 1748 nop_out_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); 1749 nop_out_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); 1750 nop_out_pdu_header.cmd_sn = be32_to_cpu(nopout_hdr->cmdsn); 1751 nop_out_pdu_header.exp_stat_sn = be32_to_cpu(nopout_hdr->exp_statsn); 1752 1753 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1754 1755 if (nopout_hdr->ttt != ISCSI_TTT_ALL_ONES) { 1756 nop_out_pdu_header.itt = be32_to_cpu(nopout_hdr->itt); 1757 nop_out_pdu_header.ttt = be32_to_cpu(nopout_hdr->ttt); 1758 } else { 1759 nop_out_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1760 nop_out_pdu_header.ttt = ISCSI_TTT_ALL_ONES; 1761 1762 spin_lock(&qedi_conn->list_lock); 1763 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1764 qedi_cmd->io_cmd_in_list = true; 1765 qedi_conn->active_cmd_count++; 1766 spin_unlock(&qedi_conn->list_lock); 1767 } 1768 1769 /* Fill tx AHS and rx buffer */ 1770 if (data_len) { 1771 tx_sgl_task_params.sgl = 1772 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1773 tx_sgl_task_params.sgl_phys_addr.lo = 1774 (u32)(qedi_conn->gen_pdu.req_dma_addr); 1775 tx_sgl_task_params.sgl_phys_addr.hi = 1776 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); 1777 tx_sgl_task_params.total_buffer_size = data_len; 1778 tx_sgl_task_params.num_sges = 1; 1779 1780 rx_sgl_task_params.sgl = 1781 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1782 rx_sgl_task_params.sgl_phys_addr.lo = 1783 (u32)(qedi_conn->gen_pdu.resp_dma_addr); 1784 rx_sgl_task_params.sgl_phys_addr.hi = 1785 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); 1786 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; 1787 rx_sgl_task_params.num_sges = 1; 1788 } 1789 1790 /* Fill fw input params */ 1791 task_params.context = fw_task_ctx; 1792 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1793 task_params.itid = tid; 1794 task_params.cq_rss_number = 0; 1795 task_params.tx_io_size = data_len; 1796 task_params.rx_io_size = resp_sge->sge_len; 1797 1798 sq_idx = qedi_get_wqe_idx(qedi_conn); 1799 task_params.sqe = &ep->sq[sq_idx]; 1800 1801 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1802 rval = init_initiator_nop_out_task(&task_params, 1803 &nop_out_pdu_header, 1804 &tx_sgl_task_params, 1805 &rx_sgl_task_params); 1806 if (rval) 1807 return -1; 1808 1809 qedi_ring_doorbell(qedi_conn); 1810 return 0; 1811 } 1812 1813 static int qedi_split_bd(struct qedi_cmd *cmd, u64 addr, int sg_len, 1814 int bd_index) 1815 { 1816 struct scsi_sge *bd = cmd->io_tbl.sge_tbl; 1817 int frag_size, sg_frags; 1818 1819 sg_frags = 0; 1820 1821 while (sg_len) { 1822 if (addr % QEDI_PAGE_SIZE) 1823 frag_size = 1824 (QEDI_PAGE_SIZE - (addr % QEDI_PAGE_SIZE)); 1825 else 1826 frag_size = (sg_len > QEDI_BD_SPLIT_SZ) ? 0 : 1827 (sg_len % QEDI_BD_SPLIT_SZ); 1828 1829 if (frag_size == 0) 1830 frag_size = QEDI_BD_SPLIT_SZ; 1831 1832 bd[bd_index + sg_frags].sge_addr.lo = (addr & 0xffffffff); 1833 bd[bd_index + sg_frags].sge_addr.hi = (addr >> 32); 1834 bd[bd_index + sg_frags].sge_len = (u16)frag_size; 1835 QEDI_INFO(&cmd->conn->qedi->dbg_ctx, QEDI_LOG_IO, 1836 "split sge %d: addr=%llx, len=%x", 1837 (bd_index + sg_frags), addr, frag_size); 1838 1839 addr += (u64)frag_size; 1840 sg_frags++; 1841 sg_len -= frag_size; 1842 } 1843 return sg_frags; 1844 } 1845 1846 static int qedi_map_scsi_sg(struct qedi_ctx *qedi, struct qedi_cmd *cmd) 1847 { 1848 struct scsi_cmnd *sc = cmd->scsi_cmd; 1849 struct scsi_sge *bd = cmd->io_tbl.sge_tbl; 1850 struct scatterlist *sg; 1851 int byte_count = 0; 1852 int bd_count = 0; 1853 int sg_count; 1854 int sg_len; 1855 int sg_frags; 1856 u64 addr, end_addr; 1857 int i; 1858 1859 WARN_ON(scsi_sg_count(sc) > QEDI_ISCSI_MAX_BDS_PER_CMD); 1860 1861 sg_count = dma_map_sg(&qedi->pdev->dev, scsi_sglist(sc), 1862 scsi_sg_count(sc), sc->sc_data_direction); 1863 1864 /* 1865 * New condition to send single SGE as cached-SGL. 1866 * Single SGE with length less than 64K. 1867 */ 1868 sg = scsi_sglist(sc); 1869 if ((sg_count == 1) && (sg_dma_len(sg) <= MAX_SGLEN_FOR_CACHESGL)) { 1870 sg_len = sg_dma_len(sg); 1871 addr = (u64)sg_dma_address(sg); 1872 1873 bd[bd_count].sge_addr.lo = (addr & 0xffffffff); 1874 bd[bd_count].sge_addr.hi = (addr >> 32); 1875 bd[bd_count].sge_len = (u16)sg_len; 1876 1877 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 1878 "single-cached-sgl: bd_count:%d addr=%llx, len=%x", 1879 sg_count, addr, sg_len); 1880 1881 return ++bd_count; 1882 } 1883 1884 scsi_for_each_sg(sc, sg, sg_count, i) { 1885 sg_len = sg_dma_len(sg); 1886 addr = (u64)sg_dma_address(sg); 1887 end_addr = (addr + sg_len); 1888 1889 /* 1890 * first sg elem in the 'list', 1891 * check if end addr is page-aligned. 1892 */ 1893 if ((i == 0) && (sg_count > 1) && (end_addr % QEDI_PAGE_SIZE)) 1894 cmd->use_slowpath = true; 1895 1896 /* 1897 * last sg elem in the 'list', 1898 * check if start addr is page-aligned. 1899 */ 1900 else if ((i == (sg_count - 1)) && 1901 (sg_count > 1) && (addr % QEDI_PAGE_SIZE)) 1902 cmd->use_slowpath = true; 1903 1904 /* 1905 * middle sg elements in list, 1906 * check if start and end addr is page-aligned 1907 */ 1908 else if ((i != 0) && (i != (sg_count - 1)) && 1909 ((addr % QEDI_PAGE_SIZE) || 1910 (end_addr % QEDI_PAGE_SIZE))) 1911 cmd->use_slowpath = true; 1912 1913 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "sg[%d] size=0x%x", 1914 i, sg_len); 1915 1916 if (sg_len > QEDI_BD_SPLIT_SZ) { 1917 sg_frags = qedi_split_bd(cmd, addr, sg_len, bd_count); 1918 } else { 1919 sg_frags = 1; 1920 bd[bd_count].sge_addr.lo = addr & 0xffffffff; 1921 bd[bd_count].sge_addr.hi = addr >> 32; 1922 bd[bd_count].sge_len = sg_len; 1923 } 1924 byte_count += sg_len; 1925 bd_count += sg_frags; 1926 } 1927 1928 if (byte_count != scsi_bufflen(sc)) 1929 QEDI_ERR(&qedi->dbg_ctx, 1930 "byte_count = %d != scsi_bufflen = %d\n", byte_count, 1931 scsi_bufflen(sc)); 1932 else 1933 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "byte_count = %d\n", 1934 byte_count); 1935 1936 WARN_ON(byte_count != scsi_bufflen(sc)); 1937 1938 return bd_count; 1939 } 1940 1941 static void qedi_iscsi_map_sg_list(struct qedi_cmd *cmd) 1942 { 1943 int bd_count; 1944 struct scsi_cmnd *sc = cmd->scsi_cmd; 1945 1946 if (scsi_sg_count(sc)) { 1947 bd_count = qedi_map_scsi_sg(cmd->conn->qedi, cmd); 1948 if (bd_count == 0) 1949 return; 1950 } else { 1951 struct scsi_sge *bd = cmd->io_tbl.sge_tbl; 1952 1953 bd[0].sge_addr.lo = 0; 1954 bd[0].sge_addr.hi = 0; 1955 bd[0].sge_len = 0; 1956 bd_count = 0; 1957 } 1958 cmd->io_tbl.sge_valid = bd_count; 1959 } 1960 1961 static void qedi_cpy_scsi_cdb(struct scsi_cmnd *sc, u32 *dstp) 1962 { 1963 u32 dword; 1964 int lpcnt; 1965 u8 *srcp; 1966 1967 lpcnt = sc->cmd_len / sizeof(dword); 1968 srcp = (u8 *)sc->cmnd; 1969 while (lpcnt--) { 1970 memcpy(&dword, (const void *)srcp, 4); 1971 *dstp = cpu_to_be32(dword); 1972 srcp += 4; 1973 dstp++; 1974 } 1975 if (sc->cmd_len & 0x3) { 1976 dword = (u32)srcp[0] | ((u32)srcp[1] << 8); 1977 *dstp = cpu_to_be32(dword); 1978 } 1979 } 1980 1981 void qedi_trace_io(struct qedi_ctx *qedi, struct iscsi_task *task, 1982 u16 tid, int8_t direction) 1983 { 1984 struct qedi_io_log *io_log; 1985 struct iscsi_conn *conn = task->conn; 1986 struct qedi_conn *qedi_conn = conn->dd_data; 1987 struct scsi_cmnd *sc_cmd = task->sc; 1988 unsigned long flags; 1989 1990 spin_lock_irqsave(&qedi->io_trace_lock, flags); 1991 1992 io_log = &qedi->io_trace_buf[qedi->io_trace_idx]; 1993 io_log->direction = direction; 1994 io_log->task_id = tid; 1995 io_log->cid = qedi_conn->iscsi_conn_id; 1996 io_log->lun = sc_cmd->device->lun; 1997 io_log->op = sc_cmd->cmnd[0]; 1998 io_log->lba[0] = sc_cmd->cmnd[2]; 1999 io_log->lba[1] = sc_cmd->cmnd[3]; 2000 io_log->lba[2] = sc_cmd->cmnd[4]; 2001 io_log->lba[3] = sc_cmd->cmnd[5]; 2002 io_log->bufflen = scsi_bufflen(sc_cmd); 2003 io_log->sg_count = scsi_sg_count(sc_cmd); 2004 io_log->fast_sgs = qedi->fast_sgls; 2005 io_log->cached_sgs = qedi->cached_sgls; 2006 io_log->slow_sgs = qedi->slow_sgls; 2007 io_log->cached_sge = qedi->use_cached_sge; 2008 io_log->slow_sge = qedi->use_slow_sge; 2009 io_log->fast_sge = qedi->use_fast_sge; 2010 io_log->result = sc_cmd->result; 2011 io_log->jiffies = jiffies; 2012 io_log->blk_req_cpu = smp_processor_id(); 2013 2014 if (direction == QEDI_IO_TRACE_REQ) { 2015 /* For requests we only care about the submission CPU */ 2016 io_log->req_cpu = smp_processor_id() % qedi->num_queues; 2017 io_log->intr_cpu = 0; 2018 io_log->blk_rsp_cpu = 0; 2019 } else if (direction == QEDI_IO_TRACE_RSP) { 2020 io_log->req_cpu = smp_processor_id() % qedi->num_queues; 2021 io_log->intr_cpu = qedi->intr_cpu; 2022 io_log->blk_rsp_cpu = smp_processor_id(); 2023 } 2024 2025 qedi->io_trace_idx++; 2026 if (qedi->io_trace_idx == QEDI_IO_TRACE_SIZE) 2027 qedi->io_trace_idx = 0; 2028 2029 qedi->use_cached_sge = false; 2030 qedi->use_slow_sge = false; 2031 qedi->use_fast_sge = false; 2032 2033 spin_unlock_irqrestore(&qedi->io_trace_lock, flags); 2034 } 2035 2036 int qedi_iscsi_send_ioreq(struct iscsi_task *task) 2037 { 2038 struct iscsi_conn *conn = task->conn; 2039 struct iscsi_session *session = conn->session; 2040 struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session); 2041 struct qedi_ctx *qedi = iscsi_host_priv(shost); 2042 struct qedi_conn *qedi_conn = conn->dd_data; 2043 struct qedi_cmd *cmd = task->dd_data; 2044 struct scsi_cmnd *sc = task->sc; 2045 struct iscsi_cmd_hdr cmd_pdu_header; 2046 struct scsi_sgl_task_params tx_sgl_task_params; 2047 struct scsi_sgl_task_params rx_sgl_task_params; 2048 struct scsi_sgl_task_params *prx_sgl = NULL; 2049 struct scsi_sgl_task_params *ptx_sgl = NULL; 2050 struct iscsi_task_params task_params; 2051 struct iscsi_conn_params conn_params; 2052 struct scsi_initiator_cmd_params cmd_params; 2053 struct e4_iscsi_task_context *fw_task_ctx; 2054 struct iscsi_cls_conn *cls_conn; 2055 struct iscsi_scsi_req *hdr = (struct iscsi_scsi_req *)task->hdr; 2056 enum iscsi_task_type task_type = MAX_ISCSI_TASK_TYPE; 2057 struct qedi_endpoint *ep; 2058 u32 scsi_lun[2]; 2059 s16 tid = 0; 2060 u16 sq_idx = 0; 2061 u16 cq_idx; 2062 int rval = 0; 2063 2064 ep = qedi_conn->ep; 2065 cls_conn = qedi_conn->cls_conn; 2066 conn = cls_conn->dd_data; 2067 2068 qedi_iscsi_map_sg_list(cmd); 2069 int_to_scsilun(sc->device->lun, (struct scsi_lun *)scsi_lun); 2070 2071 tid = qedi_get_task_idx(qedi); 2072 if (tid == -1) 2073 return -ENOMEM; 2074 2075 fw_task_ctx = 2076 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 2077 tid); 2078 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 2079 2080 cmd->task_id = tid; 2081 2082 memset(&task_params, 0, sizeof(task_params)); 2083 memset(&cmd_pdu_header, 0, sizeof(cmd_pdu_header)); 2084 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 2085 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 2086 memset(&conn_params, 0, sizeof(conn_params)); 2087 memset(&cmd_params, 0, sizeof(cmd_params)); 2088 2089 cq_idx = smp_processor_id() % qedi->num_queues; 2090 /* Update header info */ 2091 SET_FIELD(cmd_pdu_header.flags_attr, ISCSI_CMD_HDR_ATTR, 2092 ISCSI_ATTR_SIMPLE); 2093 if (hdr->cdb[0] != TEST_UNIT_READY) { 2094 if (sc->sc_data_direction == DMA_TO_DEVICE) { 2095 SET_FIELD(cmd_pdu_header.flags_attr, 2096 ISCSI_CMD_HDR_WRITE, 1); 2097 task_type = ISCSI_TASK_TYPE_INITIATOR_WRITE; 2098 } else { 2099 SET_FIELD(cmd_pdu_header.flags_attr, 2100 ISCSI_CMD_HDR_READ, 1); 2101 task_type = ISCSI_TASK_TYPE_INITIATOR_READ; 2102 } 2103 } 2104 2105 cmd_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); 2106 cmd_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); 2107 2108 qedi_update_itt_map(qedi, tid, task->itt, cmd); 2109 cmd_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 2110 cmd_pdu_header.expected_transfer_length = cpu_to_be32(hdr->data_length); 2111 cmd_pdu_header.hdr_second_dword = ntoh24(hdr->dlength); 2112 cmd_pdu_header.cmd_sn = be32_to_cpu(hdr->cmdsn); 2113 cmd_pdu_header.hdr_first_byte = hdr->opcode; 2114 qedi_cpy_scsi_cdb(sc, (u32 *)cmd_pdu_header.cdb); 2115 2116 /* Fill tx AHS and rx buffer */ 2117 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) { 2118 tx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl; 2119 tx_sgl_task_params.sgl_phys_addr.lo = 2120 (u32)(cmd->io_tbl.sge_tbl_dma); 2121 tx_sgl_task_params.sgl_phys_addr.hi = 2122 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32); 2123 tx_sgl_task_params.total_buffer_size = scsi_bufflen(sc); 2124 tx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid; 2125 if (cmd->use_slowpath) 2126 tx_sgl_task_params.small_mid_sge = true; 2127 } else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) { 2128 rx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl; 2129 rx_sgl_task_params.sgl_phys_addr.lo = 2130 (u32)(cmd->io_tbl.sge_tbl_dma); 2131 rx_sgl_task_params.sgl_phys_addr.hi = 2132 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32); 2133 rx_sgl_task_params.total_buffer_size = scsi_bufflen(sc); 2134 rx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid; 2135 } 2136 2137 /* Add conn param */ 2138 conn_params.first_burst_length = conn->session->first_burst; 2139 conn_params.max_send_pdu_length = conn->max_xmit_dlength; 2140 conn_params.max_burst_length = conn->session->max_burst; 2141 if (conn->session->initial_r2t_en) 2142 conn_params.initial_r2t = true; 2143 if (conn->session->imm_data_en) 2144 conn_params.immediate_data = true; 2145 2146 /* Add cmd params */ 2147 cmd_params.sense_data_buffer_phys_addr.lo = (u32)cmd->sense_buffer_dma; 2148 cmd_params.sense_data_buffer_phys_addr.hi = 2149 (u32)((u64)cmd->sense_buffer_dma >> 32); 2150 /* Fill fw input params */ 2151 task_params.context = fw_task_ctx; 2152 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 2153 task_params.itid = tid; 2154 task_params.cq_rss_number = cq_idx; 2155 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) 2156 task_params.tx_io_size = scsi_bufflen(sc); 2157 else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) 2158 task_params.rx_io_size = scsi_bufflen(sc); 2159 2160 sq_idx = qedi_get_wqe_idx(qedi_conn); 2161 task_params.sqe = &ep->sq[sq_idx]; 2162 2163 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 2164 "%s: %s-SGL: sg_len=0x%x num_sges=0x%x first-sge-lo=0x%x first-sge-hi=0x%x\n", 2165 (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) ? 2166 "Write " : "Read ", (cmd->io_tbl.sge_valid == 1) ? 2167 "Single" : (cmd->use_slowpath ? "SLOW" : "FAST"), 2168 (u16)cmd->io_tbl.sge_valid, scsi_bufflen(sc), 2169 (u32)(cmd->io_tbl.sge_tbl_dma), 2170 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32)); 2171 2172 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 2173 2174 if (task_params.tx_io_size != 0) 2175 ptx_sgl = &tx_sgl_task_params; 2176 if (task_params.rx_io_size != 0) 2177 prx_sgl = &rx_sgl_task_params; 2178 2179 rval = init_initiator_rw_iscsi_task(&task_params, &conn_params, 2180 &cmd_params, &cmd_pdu_header, 2181 ptx_sgl, prx_sgl, 2182 NULL); 2183 if (rval) 2184 return -1; 2185 2186 spin_lock(&qedi_conn->list_lock); 2187 list_add_tail(&cmd->io_cmd, &qedi_conn->active_cmd_list); 2188 cmd->io_cmd_in_list = true; 2189 qedi_conn->active_cmd_count++; 2190 spin_unlock(&qedi_conn->list_lock); 2191 2192 qedi_ring_doorbell(qedi_conn); 2193 return 0; 2194 } 2195 2196 int qedi_iscsi_cleanup_task(struct iscsi_task *task, bool mark_cmd_node_deleted) 2197 { 2198 struct iscsi_task_params task_params; 2199 struct qedi_endpoint *ep; 2200 struct iscsi_conn *conn = task->conn; 2201 struct qedi_conn *qedi_conn = conn->dd_data; 2202 struct qedi_cmd *cmd = task->dd_data; 2203 u16 sq_idx = 0; 2204 int rval = 0; 2205 2206 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 2207 "issue cleanup tid=0x%x itt=0x%x task_state=%d cmd_state=0%x cid=0x%x\n", 2208 cmd->task_id, get_itt(task->itt), task->state, 2209 cmd->state, qedi_conn->iscsi_conn_id); 2210 2211 memset(&task_params, 0, sizeof(task_params)); 2212 ep = qedi_conn->ep; 2213 2214 sq_idx = qedi_get_wqe_idx(qedi_conn); 2215 2216 task_params.sqe = &ep->sq[sq_idx]; 2217 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 2218 task_params.itid = cmd->task_id; 2219 2220 rval = init_cleanup_task(&task_params); 2221 if (rval) 2222 return rval; 2223 2224 qedi_ring_doorbell(qedi_conn); 2225 return 0; 2226 } 2227