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->special) { 620 QEDI_WARN(&qedi->dbg_ctx, 621 "request->special is NULL so request not valid, sc_cmd=%p.\n", 622 sc_cmd); 623 goto error; 624 } 625 626 if (!sc_cmd->request->q) { 627 QEDI_WARN(&qedi->dbg_ctx, 628 "request->q is NULL so request is not valid, sc_cmd=%p.\n", 629 sc_cmd); 630 goto error; 631 } 632 633 qedi_iscsi_unmap_sg_list(cmd); 634 635 hdr = (struct iscsi_scsi_rsp *)task->hdr; 636 hdr->opcode = cqe_data_in->opcode; 637 hdr->max_cmdsn = cpu_to_be32(cqe_data_in->max_cmd_sn); 638 hdr->exp_cmdsn = cpu_to_be32(cqe_data_in->exp_cmd_sn); 639 hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age); 640 hdr->response = cqe_data_in->reserved1; 641 hdr->cmd_status = cqe_data_in->status_rsvd; 642 hdr->flags = cqe_data_in->flags; 643 hdr->residual_count = cpu_to_be32(cqe_data_in->residual_count); 644 645 if (hdr->cmd_status == SAM_STAT_CHECK_CONDITION) { 646 datalen = cqe_data_in->reserved2 & 647 ISCSI_COMMON_HDR_DATA_SEG_LEN_MASK; 648 memcpy((char *)conn->data, (char *)cmd->sense_buffer, datalen); 649 } 650 651 /* If f/w reports data underrun err then set residual to IO transfer 652 * length, set Underrun flag and clear Overrun flag explicitly 653 */ 654 if (unlikely(cqe_err_bits && 655 GET_FIELD(cqe_err_bits, CQE_ERROR_BITMAP_UNDER_RUN_ERR))) { 656 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 657 "Under flow itt=0x%x proto flags=0x%x tid=0x%x cid 0x%x fw resid 0x%x sc dlen 0x%x\n", 658 hdr->itt, cqe_data_in->flags, cmd->task_id, 659 qedi_conn->iscsi_conn_id, hdr->residual_count, 660 scsi_bufflen(sc_cmd)); 661 hdr->residual_count = cpu_to_be32(scsi_bufflen(sc_cmd)); 662 hdr->flags |= ISCSI_FLAG_CMD_UNDERFLOW; 663 hdr->flags &= (~ISCSI_FLAG_CMD_OVERFLOW); 664 } 665 666 spin_lock(&qedi_conn->list_lock); 667 if (likely(cmd->io_cmd_in_list)) { 668 cmd->io_cmd_in_list = false; 669 list_del_init(&cmd->io_cmd); 670 qedi_conn->active_cmd_count--; 671 } 672 spin_unlock(&qedi_conn->list_lock); 673 674 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, 675 "Freeing tid=0x%x for cid=0x%x\n", 676 cmd->task_id, qedi_conn->iscsi_conn_id); 677 cmd->state = RESPONSE_RECEIVED; 678 if (qedi_io_tracing) 679 qedi_trace_io(qedi, task, cmd->task_id, QEDI_IO_TRACE_RSP); 680 681 qedi_clear_task_idx(qedi, cmd->task_id); 682 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, 683 conn->data, datalen); 684 error: 685 spin_unlock_bh(&session->back_lock); 686 } 687 688 static void qedi_mtask_completion(struct qedi_ctx *qedi, 689 union iscsi_cqe *cqe, 690 struct iscsi_task *task, 691 struct qedi_conn *conn, uint16_t que_idx) 692 { 693 struct iscsi_conn *iscsi_conn; 694 u32 hdr_opcode; 695 696 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte; 697 iscsi_conn = conn->cls_conn->dd_data; 698 699 switch (hdr_opcode) { 700 case ISCSI_OPCODE_SCSI_RESPONSE: 701 case ISCSI_OPCODE_DATA_IN: 702 qedi_scsi_completion(qedi, cqe, task, iscsi_conn); 703 break; 704 case ISCSI_OPCODE_LOGIN_RESPONSE: 705 qedi_process_login_resp(qedi, cqe, task, conn); 706 break; 707 case ISCSI_OPCODE_TMF_RESPONSE: 708 qedi_process_tmf_resp(qedi, cqe, task, conn); 709 break; 710 case ISCSI_OPCODE_TEXT_RESPONSE: 711 qedi_process_text_resp(qedi, cqe, task, conn); 712 break; 713 case ISCSI_OPCODE_LOGOUT_RESPONSE: 714 qedi_process_logout_resp(qedi, cqe, task, conn); 715 break; 716 case ISCSI_OPCODE_NOP_IN: 717 qedi_process_nopin_mesg(qedi, cqe, task, conn, que_idx); 718 break; 719 default: 720 QEDI_ERR(&qedi->dbg_ctx, "unknown opcode\n"); 721 } 722 } 723 724 static void qedi_process_nopin_local_cmpl(struct qedi_ctx *qedi, 725 struct iscsi_cqe_solicited *cqe, 726 struct iscsi_task *task, 727 struct qedi_conn *qedi_conn) 728 { 729 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 730 struct iscsi_session *session = conn->session; 731 struct qedi_cmd *cmd = task->dd_data; 732 733 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UNSOL, 734 "itid=0x%x, cmd task id=0x%x\n", 735 cqe->itid, cmd->task_id); 736 737 cmd->state = RESPONSE_RECEIVED; 738 qedi_clear_task_idx(qedi, cmd->task_id); 739 740 spin_lock_bh(&session->back_lock); 741 __iscsi_put_task(task); 742 spin_unlock_bh(&session->back_lock); 743 } 744 745 static void qedi_process_cmd_cleanup_resp(struct qedi_ctx *qedi, 746 struct iscsi_cqe_solicited *cqe, 747 struct iscsi_task *task, 748 struct iscsi_conn *conn) 749 { 750 struct qedi_work_map *work, *work_tmp; 751 u32 proto_itt = cqe->itid; 752 u32 ptmp_itt = 0; 753 itt_t protoitt = 0; 754 int found = 0; 755 struct qedi_cmd *qedi_cmd = NULL; 756 u32 rtid = 0; 757 u32 iscsi_cid; 758 struct qedi_conn *qedi_conn; 759 struct qedi_cmd *dbg_cmd; 760 struct iscsi_task *mtask; 761 struct iscsi_tm *tmf_hdr = NULL; 762 763 iscsi_cid = cqe->conn_id; 764 qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; 765 if (!qedi_conn) { 766 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 767 "icid not found 0x%x\n", cqe->conn_id); 768 return; 769 } 770 771 /* Based on this itt get the corresponding qedi_cmd */ 772 spin_lock_bh(&qedi_conn->tmf_work_lock); 773 list_for_each_entry_safe(work, work_tmp, &qedi_conn->tmf_work_list, 774 list) { 775 if (work->rtid == proto_itt) { 776 /* We found the command */ 777 qedi_cmd = work->qedi_cmd; 778 if (!qedi_cmd->list_tmf_work) { 779 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 780 "TMF work not found, cqe->tid=0x%x, cid=0x%x\n", 781 proto_itt, qedi_conn->iscsi_conn_id); 782 WARN_ON(1); 783 } 784 found = 1; 785 mtask = qedi_cmd->task; 786 tmf_hdr = (struct iscsi_tm *)mtask->hdr; 787 rtid = work->rtid; 788 789 list_del_init(&work->list); 790 kfree(work); 791 qedi_cmd->list_tmf_work = NULL; 792 } 793 } 794 spin_unlock_bh(&qedi_conn->tmf_work_lock); 795 796 if (found) { 797 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 798 "TMF work, cqe->tid=0x%x, tmf flags=0x%x, cid=0x%x\n", 799 proto_itt, tmf_hdr->flags, qedi_conn->iscsi_conn_id); 800 801 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 802 ISCSI_TM_FUNC_ABORT_TASK) { 803 spin_lock_bh(&conn->session->back_lock); 804 805 protoitt = build_itt(get_itt(tmf_hdr->rtt), 806 conn->session->age); 807 task = iscsi_itt_to_task(conn, protoitt); 808 809 spin_unlock_bh(&conn->session->back_lock); 810 811 if (!task) { 812 QEDI_NOTICE(&qedi->dbg_ctx, 813 "IO task completed, tmf rtt=0x%x, cid=0x%x\n", 814 get_itt(tmf_hdr->rtt), 815 qedi_conn->iscsi_conn_id); 816 return; 817 } 818 819 dbg_cmd = task->dd_data; 820 821 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 822 "Abort tmf rtt=0x%x, i/o itt=0x%x, i/o tid=0x%x, cid=0x%x\n", 823 get_itt(tmf_hdr->rtt), get_itt(task->itt), 824 dbg_cmd->task_id, qedi_conn->iscsi_conn_id); 825 826 if (qedi_cmd->state == CLEANUP_WAIT_FAILED) 827 qedi_cmd->state = CLEANUP_RECV; 828 829 qedi_clear_task_idx(qedi_conn->qedi, rtid); 830 831 spin_lock(&qedi_conn->list_lock); 832 list_del_init(&dbg_cmd->io_cmd); 833 qedi_conn->active_cmd_count--; 834 spin_unlock(&qedi_conn->list_lock); 835 qedi_cmd->state = CLEANUP_RECV; 836 wake_up_interruptible(&qedi_conn->wait_queue); 837 } 838 } else if (qedi_conn->cmd_cleanup_req > 0) { 839 spin_lock_bh(&conn->session->back_lock); 840 qedi_get_proto_itt(qedi, cqe->itid, &ptmp_itt); 841 protoitt = build_itt(ptmp_itt, conn->session->age); 842 task = iscsi_itt_to_task(conn, protoitt); 843 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 844 "cleanup io itid=0x%x, protoitt=0x%x, cmd_cleanup_cmpl=%d, cid=0x%x\n", 845 cqe->itid, protoitt, qedi_conn->cmd_cleanup_cmpl, 846 qedi_conn->iscsi_conn_id); 847 848 spin_unlock_bh(&conn->session->back_lock); 849 if (!task) { 850 QEDI_NOTICE(&qedi->dbg_ctx, 851 "task is null, itid=0x%x, cid=0x%x\n", 852 cqe->itid, qedi_conn->iscsi_conn_id); 853 return; 854 } 855 qedi_conn->cmd_cleanup_cmpl++; 856 wake_up(&qedi_conn->wait_queue); 857 858 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, 859 "Freeing tid=0x%x for cid=0x%x\n", 860 cqe->itid, qedi_conn->iscsi_conn_id); 861 qedi_clear_task_idx(qedi_conn->qedi, cqe->itid); 862 863 } else { 864 qedi_get_proto_itt(qedi, cqe->itid, &ptmp_itt); 865 protoitt = build_itt(ptmp_itt, conn->session->age); 866 task = iscsi_itt_to_task(conn, protoitt); 867 QEDI_ERR(&qedi->dbg_ctx, 868 "Delayed or untracked cleanup response, itt=0x%x, tid=0x%x, cid=0x%x, task=%p\n", 869 protoitt, cqe->itid, qedi_conn->iscsi_conn_id, task); 870 } 871 } 872 873 void qedi_fp_process_cqes(struct qedi_work *work) 874 { 875 struct qedi_ctx *qedi = work->qedi; 876 union iscsi_cqe *cqe = &work->cqe; 877 struct iscsi_task *task = NULL; 878 struct iscsi_nopout *nopout_hdr; 879 struct qedi_conn *q_conn; 880 struct iscsi_conn *conn; 881 struct qedi_cmd *qedi_cmd; 882 u32 comp_type; 883 u32 iscsi_cid; 884 u32 hdr_opcode; 885 u16 que_idx = work->que_idx; 886 u8 cqe_err_bits = 0; 887 888 comp_type = cqe->cqe_common.cqe_type; 889 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte; 890 cqe_err_bits = 891 cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits; 892 893 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 894 "fw_cid=0x%x, cqe type=0x%x, opcode=0x%x\n", 895 cqe->cqe_common.conn_id, comp_type, hdr_opcode); 896 897 if (comp_type >= MAX_ISCSI_CQES_TYPE) { 898 QEDI_WARN(&qedi->dbg_ctx, "Invalid CqE type\n"); 899 return; 900 } 901 902 iscsi_cid = cqe->cqe_common.conn_id; 903 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; 904 if (!q_conn) { 905 QEDI_WARN(&qedi->dbg_ctx, 906 "Session no longer exists for cid=0x%x!!\n", 907 iscsi_cid); 908 return; 909 } 910 911 conn = q_conn->cls_conn->dd_data; 912 913 if (unlikely(cqe_err_bits && 914 GET_FIELD(cqe_err_bits, 915 CQE_ERROR_BITMAP_DATA_DIGEST_ERR))) { 916 iscsi_conn_failure(conn, ISCSI_ERR_DATA_DGST); 917 return; 918 } 919 920 switch (comp_type) { 921 case ISCSI_CQE_TYPE_SOLICITED: 922 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE: 923 qedi_cmd = container_of(work, struct qedi_cmd, cqe_work); 924 task = qedi_cmd->task; 925 if (!task) { 926 QEDI_WARN(&qedi->dbg_ctx, "task is NULL\n"); 927 return; 928 } 929 930 /* Process NOPIN local completion */ 931 nopout_hdr = (struct iscsi_nopout *)task->hdr; 932 if ((nopout_hdr->itt == RESERVED_ITT) && 933 (cqe->cqe_solicited.itid != (u16)RESERVED_ITT)) { 934 qedi_process_nopin_local_cmpl(qedi, &cqe->cqe_solicited, 935 task, q_conn); 936 } else { 937 cqe->cqe_solicited.itid = 938 qedi_get_itt(cqe->cqe_solicited); 939 /* Process other solicited responses */ 940 qedi_mtask_completion(qedi, cqe, task, q_conn, que_idx); 941 } 942 break; 943 case ISCSI_CQE_TYPE_UNSOLICITED: 944 switch (hdr_opcode) { 945 case ISCSI_OPCODE_NOP_IN: 946 qedi_process_nopin_mesg(qedi, cqe, task, q_conn, 947 que_idx); 948 break; 949 case ISCSI_OPCODE_ASYNC_MSG: 950 qedi_process_async_mesg(qedi, cqe, task, q_conn, 951 que_idx); 952 break; 953 case ISCSI_OPCODE_REJECT: 954 qedi_process_reject_mesg(qedi, cqe, task, q_conn, 955 que_idx); 956 break; 957 } 958 goto exit_fp_process; 959 case ISCSI_CQE_TYPE_DUMMY: 960 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "Dummy CqE\n"); 961 goto exit_fp_process; 962 case ISCSI_CQE_TYPE_TASK_CLEANUP: 963 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "CleanUp CqE\n"); 964 qedi_process_cmd_cleanup_resp(qedi, &cqe->cqe_solicited, task, 965 conn); 966 goto exit_fp_process; 967 default: 968 QEDI_ERR(&qedi->dbg_ctx, "Error cqe.\n"); 969 break; 970 } 971 972 exit_fp_process: 973 return; 974 } 975 976 static void qedi_ring_doorbell(struct qedi_conn *qedi_conn) 977 { 978 struct iscsi_db_data dbell = { 0 }; 979 980 dbell.agg_flags = 0; 981 982 dbell.params |= DB_DEST_XCM << ISCSI_DB_DATA_DEST_SHIFT; 983 dbell.params |= DB_AGG_CMD_SET << ISCSI_DB_DATA_AGG_CMD_SHIFT; 984 dbell.params |= 985 DQ_XCM_ISCSI_SQ_PROD_CMD << ISCSI_DB_DATA_AGG_VAL_SEL_SHIFT; 986 987 dbell.sq_prod = qedi_conn->ep->fw_sq_prod_idx; 988 writel(*(u32 *)&dbell, qedi_conn->ep->p_doorbell); 989 990 /* Make sure fw write idx is coherent, and include both memory barriers 991 * as a failsafe as for some architectures the call is the same but on 992 * others they are two different assembly operations. 993 */ 994 wmb(); 995 mmiowb(); 996 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_MP_REQ, 997 "prod_idx=0x%x, fw_prod_idx=0x%x, cid=0x%x\n", 998 qedi_conn->ep->sq_prod_idx, qedi_conn->ep->fw_sq_prod_idx, 999 qedi_conn->iscsi_conn_id); 1000 } 1001 1002 static u16 qedi_get_wqe_idx(struct qedi_conn *qedi_conn) 1003 { 1004 struct qedi_endpoint *ep; 1005 u16 rval; 1006 1007 ep = qedi_conn->ep; 1008 rval = ep->sq_prod_idx; 1009 1010 /* Increament SQ index */ 1011 ep->sq_prod_idx++; 1012 ep->fw_sq_prod_idx++; 1013 if (ep->sq_prod_idx == QEDI_SQ_SIZE) 1014 ep->sq_prod_idx = 0; 1015 1016 return rval; 1017 } 1018 1019 int qedi_send_iscsi_login(struct qedi_conn *qedi_conn, 1020 struct iscsi_task *task) 1021 { 1022 struct iscsi_login_req_hdr login_req_pdu_header; 1023 struct scsi_sgl_task_params tx_sgl_task_params; 1024 struct scsi_sgl_task_params rx_sgl_task_params; 1025 struct iscsi_task_params task_params; 1026 struct e4_iscsi_task_context *fw_task_ctx; 1027 struct qedi_ctx *qedi = qedi_conn->qedi; 1028 struct iscsi_login_req *login_hdr; 1029 struct scsi_sge *resp_sge = NULL; 1030 struct qedi_cmd *qedi_cmd; 1031 struct qedi_endpoint *ep; 1032 s16 tid = 0; 1033 u16 sq_idx = 0; 1034 int rval = 0; 1035 1036 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1037 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1038 ep = qedi_conn->ep; 1039 login_hdr = (struct iscsi_login_req *)task->hdr; 1040 1041 tid = qedi_get_task_idx(qedi); 1042 if (tid == -1) 1043 return -ENOMEM; 1044 1045 fw_task_ctx = 1046 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1047 tid); 1048 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1049 1050 qedi_cmd->task_id = tid; 1051 1052 memset(&task_params, 0, sizeof(task_params)); 1053 memset(&login_req_pdu_header, 0, sizeof(login_req_pdu_header)); 1054 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1055 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1056 /* Update header info */ 1057 login_req_pdu_header.opcode = login_hdr->opcode; 1058 login_req_pdu_header.version_min = login_hdr->min_version; 1059 login_req_pdu_header.version_max = login_hdr->max_version; 1060 login_req_pdu_header.flags_attr = login_hdr->flags; 1061 login_req_pdu_header.isid_tabc = swab32p((u32 *)login_hdr->isid); 1062 login_req_pdu_header.isid_d = swab16p((u16 *)&login_hdr->isid[4]); 1063 1064 login_req_pdu_header.tsih = login_hdr->tsih; 1065 login_req_pdu_header.hdr_second_dword = ntoh24(login_hdr->dlength); 1066 1067 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1068 login_req_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1069 login_req_pdu_header.cid = qedi_conn->iscsi_conn_id; 1070 login_req_pdu_header.cmd_sn = be32_to_cpu(login_hdr->cmdsn); 1071 login_req_pdu_header.exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn); 1072 login_req_pdu_header.exp_stat_sn = 0; 1073 1074 /* Fill tx AHS and rx buffer */ 1075 tx_sgl_task_params.sgl = 1076 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1077 tx_sgl_task_params.sgl_phys_addr.lo = 1078 (u32)(qedi_conn->gen_pdu.req_dma_addr); 1079 tx_sgl_task_params.sgl_phys_addr.hi = 1080 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); 1081 tx_sgl_task_params.total_buffer_size = ntoh24(login_hdr->dlength); 1082 tx_sgl_task_params.num_sges = 1; 1083 1084 rx_sgl_task_params.sgl = 1085 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1086 rx_sgl_task_params.sgl_phys_addr.lo = 1087 (u32)(qedi_conn->gen_pdu.resp_dma_addr); 1088 rx_sgl_task_params.sgl_phys_addr.hi = 1089 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); 1090 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; 1091 rx_sgl_task_params.num_sges = 1; 1092 1093 /* Fill fw input params */ 1094 task_params.context = fw_task_ctx; 1095 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1096 task_params.itid = tid; 1097 task_params.cq_rss_number = 0; 1098 task_params.tx_io_size = ntoh24(login_hdr->dlength); 1099 task_params.rx_io_size = resp_sge->sge_len; 1100 1101 sq_idx = qedi_get_wqe_idx(qedi_conn); 1102 task_params.sqe = &ep->sq[sq_idx]; 1103 1104 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1105 rval = init_initiator_login_request_task(&task_params, 1106 &login_req_pdu_header, 1107 &tx_sgl_task_params, 1108 &rx_sgl_task_params); 1109 if (rval) 1110 return -1; 1111 1112 spin_lock(&qedi_conn->list_lock); 1113 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1114 qedi_cmd->io_cmd_in_list = true; 1115 qedi_conn->active_cmd_count++; 1116 spin_unlock(&qedi_conn->list_lock); 1117 1118 qedi_ring_doorbell(qedi_conn); 1119 return 0; 1120 } 1121 1122 int qedi_send_iscsi_logout(struct qedi_conn *qedi_conn, 1123 struct iscsi_task *task) 1124 { 1125 struct iscsi_logout_req_hdr logout_pdu_header; 1126 struct scsi_sgl_task_params tx_sgl_task_params; 1127 struct scsi_sgl_task_params rx_sgl_task_params; 1128 struct iscsi_task_params task_params; 1129 struct e4_iscsi_task_context *fw_task_ctx; 1130 struct iscsi_logout *logout_hdr = NULL; 1131 struct qedi_ctx *qedi = qedi_conn->qedi; 1132 struct qedi_cmd *qedi_cmd; 1133 struct qedi_endpoint *ep; 1134 s16 tid = 0; 1135 u16 sq_idx = 0; 1136 int rval = 0; 1137 1138 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1139 logout_hdr = (struct iscsi_logout *)task->hdr; 1140 ep = qedi_conn->ep; 1141 1142 tid = qedi_get_task_idx(qedi); 1143 if (tid == -1) 1144 return -ENOMEM; 1145 1146 fw_task_ctx = 1147 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1148 tid); 1149 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1150 1151 qedi_cmd->task_id = tid; 1152 1153 memset(&task_params, 0, sizeof(task_params)); 1154 memset(&logout_pdu_header, 0, sizeof(logout_pdu_header)); 1155 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1156 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1157 1158 /* Update header info */ 1159 logout_pdu_header.opcode = logout_hdr->opcode; 1160 logout_pdu_header.reason_code = 0x80 | logout_hdr->flags; 1161 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1162 logout_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1163 logout_pdu_header.exp_stat_sn = be32_to_cpu(logout_hdr->exp_statsn); 1164 logout_pdu_header.cmd_sn = be32_to_cpu(logout_hdr->cmdsn); 1165 logout_pdu_header.cid = qedi_conn->iscsi_conn_id; 1166 1167 /* Fill fw input params */ 1168 task_params.context = fw_task_ctx; 1169 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1170 task_params.itid = tid; 1171 task_params.cq_rss_number = 0; 1172 task_params.tx_io_size = 0; 1173 task_params.rx_io_size = 0; 1174 1175 sq_idx = qedi_get_wqe_idx(qedi_conn); 1176 task_params.sqe = &ep->sq[sq_idx]; 1177 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1178 1179 rval = init_initiator_logout_request_task(&task_params, 1180 &logout_pdu_header, 1181 NULL, NULL); 1182 if (rval) 1183 return -1; 1184 1185 spin_lock(&qedi_conn->list_lock); 1186 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1187 qedi_cmd->io_cmd_in_list = true; 1188 qedi_conn->active_cmd_count++; 1189 spin_unlock(&qedi_conn->list_lock); 1190 1191 qedi_ring_doorbell(qedi_conn); 1192 return 0; 1193 } 1194 1195 int qedi_cleanup_all_io(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn, 1196 struct iscsi_task *task, bool in_recovery) 1197 { 1198 int rval; 1199 struct iscsi_task *ctask; 1200 struct qedi_cmd *cmd, *cmd_tmp; 1201 struct iscsi_tm *tmf_hdr; 1202 unsigned int lun = 0; 1203 bool lun_reset = false; 1204 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 1205 struct iscsi_session *session = conn->session; 1206 1207 /* From recovery, task is NULL or from tmf resp valid task */ 1208 if (task) { 1209 tmf_hdr = (struct iscsi_tm *)task->hdr; 1210 1211 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1212 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) { 1213 lun_reset = true; 1214 lun = scsilun_to_int(&tmf_hdr->lun); 1215 } 1216 } 1217 1218 qedi_conn->cmd_cleanup_req = 0; 1219 qedi_conn->cmd_cleanup_cmpl = 0; 1220 1221 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1222 "active_cmd_count=%d, cid=0x%x, in_recovery=%d, lun_reset=%d\n", 1223 qedi_conn->active_cmd_count, qedi_conn->iscsi_conn_id, 1224 in_recovery, lun_reset); 1225 1226 if (lun_reset) 1227 spin_lock_bh(&session->back_lock); 1228 1229 spin_lock(&qedi_conn->list_lock); 1230 1231 list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list, 1232 io_cmd) { 1233 ctask = cmd->task; 1234 if (ctask == task) 1235 continue; 1236 1237 if (lun_reset) { 1238 if (cmd->scsi_cmd && cmd->scsi_cmd->device) { 1239 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1240 "tid=0x%x itt=0x%x scsi_cmd_ptr=%p device=%p task_state=%d cmd_state=0%x cid=0x%x\n", 1241 cmd->task_id, get_itt(ctask->itt), 1242 cmd->scsi_cmd, cmd->scsi_cmd->device, 1243 ctask->state, cmd->state, 1244 qedi_conn->iscsi_conn_id); 1245 if (cmd->scsi_cmd->device->lun != lun) 1246 continue; 1247 } 1248 } 1249 qedi_conn->cmd_cleanup_req++; 1250 qedi_iscsi_cleanup_task(ctask, true); 1251 1252 list_del_init(&cmd->io_cmd); 1253 qedi_conn->active_cmd_count--; 1254 QEDI_WARN(&qedi->dbg_ctx, 1255 "Deleted active cmd list node io_cmd=%p, cid=0x%x\n", 1256 &cmd->io_cmd, qedi_conn->iscsi_conn_id); 1257 } 1258 1259 spin_unlock(&qedi_conn->list_lock); 1260 1261 if (lun_reset) 1262 spin_unlock_bh(&session->back_lock); 1263 1264 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1265 "cmd_cleanup_req=%d, cid=0x%x\n", 1266 qedi_conn->cmd_cleanup_req, 1267 qedi_conn->iscsi_conn_id); 1268 1269 rval = wait_event_interruptible_timeout(qedi_conn->wait_queue, 1270 ((qedi_conn->cmd_cleanup_req == 1271 qedi_conn->cmd_cleanup_cmpl) || 1272 qedi_conn->ep), 1273 5 * HZ); 1274 if (rval) { 1275 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1276 "i/o cmd_cleanup_req=%d, equal to cmd_cleanup_cmpl=%d, cid=0x%x\n", 1277 qedi_conn->cmd_cleanup_req, 1278 qedi_conn->cmd_cleanup_cmpl, 1279 qedi_conn->iscsi_conn_id); 1280 1281 return 0; 1282 } 1283 1284 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1285 "i/o cmd_cleanup_req=%d, not equal to cmd_cleanup_cmpl=%d, cid=0x%x\n", 1286 qedi_conn->cmd_cleanup_req, 1287 qedi_conn->cmd_cleanup_cmpl, 1288 qedi_conn->iscsi_conn_id); 1289 1290 iscsi_host_for_each_session(qedi->shost, 1291 qedi_mark_device_missing); 1292 qedi_ops->common->drain(qedi->cdev); 1293 1294 /* Enable IOs for all other sessions except current.*/ 1295 if (!wait_event_interruptible_timeout(qedi_conn->wait_queue, 1296 (qedi_conn->cmd_cleanup_req == 1297 qedi_conn->cmd_cleanup_cmpl), 1298 5 * HZ)) { 1299 iscsi_host_for_each_session(qedi->shost, 1300 qedi_mark_device_available); 1301 return -1; 1302 } 1303 1304 iscsi_host_for_each_session(qedi->shost, 1305 qedi_mark_device_available); 1306 1307 return 0; 1308 } 1309 1310 void qedi_clearsq(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn, 1311 struct iscsi_task *task) 1312 { 1313 struct qedi_endpoint *qedi_ep; 1314 int rval; 1315 1316 qedi_ep = qedi_conn->ep; 1317 qedi_conn->cmd_cleanup_req = 0; 1318 qedi_conn->cmd_cleanup_cmpl = 0; 1319 1320 if (!qedi_ep) { 1321 QEDI_WARN(&qedi->dbg_ctx, 1322 "Cannot proceed, ep already disconnected, cid=0x%x\n", 1323 qedi_conn->iscsi_conn_id); 1324 return; 1325 } 1326 1327 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1328 "Clearing SQ for cid=0x%x, conn=%p, ep=%p\n", 1329 qedi_conn->iscsi_conn_id, qedi_conn, qedi_ep); 1330 1331 qedi_ops->clear_sq(qedi->cdev, qedi_ep->handle); 1332 1333 rval = qedi_cleanup_all_io(qedi, qedi_conn, task, true); 1334 if (rval) { 1335 QEDI_ERR(&qedi->dbg_ctx, 1336 "fatal error, need hard reset, cid=0x%x\n", 1337 qedi_conn->iscsi_conn_id); 1338 WARN_ON(1); 1339 } 1340 } 1341 1342 static int qedi_wait_for_cleanup_request(struct qedi_ctx *qedi, 1343 struct qedi_conn *qedi_conn, 1344 struct iscsi_task *task, 1345 struct qedi_cmd *qedi_cmd, 1346 struct qedi_work_map *list_work) 1347 { 1348 struct qedi_cmd *cmd = (struct qedi_cmd *)task->dd_data; 1349 int wait; 1350 1351 wait = wait_event_interruptible_timeout(qedi_conn->wait_queue, 1352 ((qedi_cmd->state == 1353 CLEANUP_RECV) || 1354 ((qedi_cmd->type == TYPEIO) && 1355 (cmd->state == 1356 RESPONSE_RECEIVED))), 1357 5 * HZ); 1358 if (!wait) { 1359 qedi_cmd->state = CLEANUP_WAIT_FAILED; 1360 1361 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1362 "Cleanup timedout tid=0x%x, issue connection recovery, cid=0x%x\n", 1363 cmd->task_id, qedi_conn->iscsi_conn_id); 1364 1365 return -1; 1366 } 1367 return 0; 1368 } 1369 1370 static void qedi_tmf_work(struct work_struct *work) 1371 { 1372 struct qedi_cmd *qedi_cmd = 1373 container_of(work, struct qedi_cmd, tmf_work); 1374 struct qedi_conn *qedi_conn = qedi_cmd->conn; 1375 struct qedi_ctx *qedi = qedi_conn->qedi; 1376 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 1377 struct iscsi_cls_session *cls_sess; 1378 struct qedi_work_map *list_work = NULL; 1379 struct iscsi_task *mtask; 1380 struct qedi_cmd *cmd; 1381 struct iscsi_task *ctask; 1382 struct iscsi_tm *tmf_hdr; 1383 s16 rval = 0; 1384 s16 tid = 0; 1385 1386 mtask = qedi_cmd->task; 1387 tmf_hdr = (struct iscsi_tm *)mtask->hdr; 1388 cls_sess = iscsi_conn_to_session(qedi_conn->cls_conn); 1389 set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); 1390 1391 ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt); 1392 if (!ctask || !ctask->sc) { 1393 QEDI_ERR(&qedi->dbg_ctx, "Task already completed\n"); 1394 goto abort_ret; 1395 } 1396 1397 cmd = (struct qedi_cmd *)ctask->dd_data; 1398 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1399 "Abort tmf rtt=0x%x, cmd itt=0x%x, cmd tid=0x%x, cid=0x%x\n", 1400 get_itt(tmf_hdr->rtt), get_itt(ctask->itt), cmd->task_id, 1401 qedi_conn->iscsi_conn_id); 1402 1403 if (qedi_do_not_recover) { 1404 QEDI_ERR(&qedi->dbg_ctx, "DONT SEND CLEANUP/ABORT %d\n", 1405 qedi_do_not_recover); 1406 goto abort_ret; 1407 } 1408 1409 list_work = kzalloc(sizeof(*list_work), GFP_ATOMIC); 1410 if (!list_work) { 1411 QEDI_ERR(&qedi->dbg_ctx, "Memory allocation failed\n"); 1412 goto abort_ret; 1413 } 1414 1415 qedi_cmd->type = TYPEIO; 1416 list_work->qedi_cmd = qedi_cmd; 1417 list_work->rtid = cmd->task_id; 1418 list_work->state = QEDI_WORK_SCHEDULED; 1419 qedi_cmd->list_tmf_work = list_work; 1420 1421 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1422 "Queue tmf work=%p, list node=%p, cid=0x%x, tmf flags=0x%x\n", 1423 list_work->ptr_tmf_work, list_work, qedi_conn->iscsi_conn_id, 1424 tmf_hdr->flags); 1425 1426 spin_lock_bh(&qedi_conn->tmf_work_lock); 1427 list_add_tail(&list_work->list, &qedi_conn->tmf_work_list); 1428 spin_unlock_bh(&qedi_conn->tmf_work_lock); 1429 1430 qedi_iscsi_cleanup_task(ctask, false); 1431 1432 rval = qedi_wait_for_cleanup_request(qedi, qedi_conn, ctask, qedi_cmd, 1433 list_work); 1434 if (rval == -1) { 1435 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1436 "FW cleanup got escalated, cid=0x%x\n", 1437 qedi_conn->iscsi_conn_id); 1438 goto ldel_exit; 1439 } 1440 1441 tid = qedi_get_task_idx(qedi); 1442 if (tid == -1) { 1443 QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n", 1444 qedi_conn->iscsi_conn_id); 1445 goto ldel_exit; 1446 } 1447 1448 qedi_cmd->task_id = tid; 1449 qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task); 1450 1451 abort_ret: 1452 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); 1453 return; 1454 1455 ldel_exit: 1456 spin_lock_bh(&qedi_conn->tmf_work_lock); 1457 if (!qedi_cmd->list_tmf_work) { 1458 list_del_init(&list_work->list); 1459 qedi_cmd->list_tmf_work = NULL; 1460 kfree(list_work); 1461 } 1462 spin_unlock_bh(&qedi_conn->tmf_work_lock); 1463 1464 spin_lock(&qedi_conn->list_lock); 1465 list_del_init(&cmd->io_cmd); 1466 qedi_conn->active_cmd_count--; 1467 spin_unlock(&qedi_conn->list_lock); 1468 1469 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); 1470 } 1471 1472 static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn, 1473 struct iscsi_task *mtask) 1474 { 1475 struct iscsi_tmf_request_hdr tmf_pdu_header; 1476 struct iscsi_task_params task_params; 1477 struct qedi_ctx *qedi = qedi_conn->qedi; 1478 struct e4_iscsi_task_context *fw_task_ctx; 1479 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 1480 struct iscsi_task *ctask; 1481 struct iscsi_tm *tmf_hdr; 1482 struct qedi_cmd *qedi_cmd; 1483 struct qedi_cmd *cmd; 1484 struct qedi_endpoint *ep; 1485 u32 scsi_lun[2]; 1486 s16 tid = 0; 1487 u16 sq_idx = 0; 1488 int rval = 0; 1489 1490 tmf_hdr = (struct iscsi_tm *)mtask->hdr; 1491 qedi_cmd = (struct qedi_cmd *)mtask->dd_data; 1492 ep = qedi_conn->ep; 1493 if (!ep) 1494 return -ENODEV; 1495 1496 tid = qedi_get_task_idx(qedi); 1497 if (tid == -1) 1498 return -ENOMEM; 1499 1500 fw_task_ctx = 1501 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1502 tid); 1503 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1504 1505 qedi_cmd->task_id = tid; 1506 1507 memset(&task_params, 0, sizeof(task_params)); 1508 memset(&tmf_pdu_header, 0, sizeof(tmf_pdu_header)); 1509 1510 /* Update header info */ 1511 qedi_update_itt_map(qedi, tid, mtask->itt, qedi_cmd); 1512 tmf_pdu_header.itt = qedi_set_itt(tid, get_itt(mtask->itt)); 1513 tmf_pdu_header.cmd_sn = be32_to_cpu(tmf_hdr->cmdsn); 1514 1515 memcpy(scsi_lun, &tmf_hdr->lun, sizeof(struct scsi_lun)); 1516 tmf_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); 1517 tmf_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); 1518 1519 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1520 ISCSI_TM_FUNC_ABORT_TASK) { 1521 ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt); 1522 if (!ctask || !ctask->sc) { 1523 QEDI_ERR(&qedi->dbg_ctx, 1524 "Could not get reference task\n"); 1525 return 0; 1526 } 1527 cmd = (struct qedi_cmd *)ctask->dd_data; 1528 tmf_pdu_header.rtt = 1529 qedi_set_itt(cmd->task_id, 1530 get_itt(tmf_hdr->rtt)); 1531 } else { 1532 tmf_pdu_header.rtt = ISCSI_RESERVED_TAG; 1533 } 1534 1535 tmf_pdu_header.opcode = tmf_hdr->opcode; 1536 tmf_pdu_header.function = tmf_hdr->flags; 1537 tmf_pdu_header.hdr_second_dword = ntoh24(tmf_hdr->dlength); 1538 tmf_pdu_header.ref_cmd_sn = be32_to_cpu(tmf_hdr->refcmdsn); 1539 1540 /* Fill fw input params */ 1541 task_params.context = fw_task_ctx; 1542 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1543 task_params.itid = tid; 1544 task_params.cq_rss_number = 0; 1545 task_params.tx_io_size = 0; 1546 task_params.rx_io_size = 0; 1547 1548 sq_idx = qedi_get_wqe_idx(qedi_conn); 1549 task_params.sqe = &ep->sq[sq_idx]; 1550 1551 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1552 rval = init_initiator_tmf_request_task(&task_params, 1553 &tmf_pdu_header); 1554 if (rval) 1555 return -1; 1556 1557 spin_lock(&qedi_conn->list_lock); 1558 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1559 qedi_cmd->io_cmd_in_list = true; 1560 qedi_conn->active_cmd_count++; 1561 spin_unlock(&qedi_conn->list_lock); 1562 1563 qedi_ring_doorbell(qedi_conn); 1564 return 0; 1565 } 1566 1567 int qedi_iscsi_abort_work(struct qedi_conn *qedi_conn, 1568 struct iscsi_task *mtask) 1569 { 1570 struct qedi_ctx *qedi = qedi_conn->qedi; 1571 struct iscsi_tm *tmf_hdr; 1572 struct qedi_cmd *qedi_cmd = (struct qedi_cmd *)mtask->dd_data; 1573 s16 tid = 0; 1574 1575 tmf_hdr = (struct iscsi_tm *)mtask->hdr; 1576 qedi_cmd->task = mtask; 1577 1578 /* If abort task then schedule the work and return */ 1579 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1580 ISCSI_TM_FUNC_ABORT_TASK) { 1581 qedi_cmd->state = CLEANUP_WAIT; 1582 INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_work); 1583 queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work); 1584 1585 } else if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1586 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) || 1587 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1588 ISCSI_TM_FUNC_TARGET_WARM_RESET) || 1589 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1590 ISCSI_TM_FUNC_TARGET_COLD_RESET)) { 1591 tid = qedi_get_task_idx(qedi); 1592 if (tid == -1) { 1593 QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n", 1594 qedi_conn->iscsi_conn_id); 1595 return -1; 1596 } 1597 qedi_cmd->task_id = tid; 1598 1599 qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task); 1600 1601 } else { 1602 QEDI_ERR(&qedi->dbg_ctx, "Invalid tmf, cid=0x%x\n", 1603 qedi_conn->iscsi_conn_id); 1604 return -1; 1605 } 1606 1607 return 0; 1608 } 1609 1610 int qedi_send_iscsi_text(struct qedi_conn *qedi_conn, 1611 struct iscsi_task *task) 1612 { 1613 struct iscsi_text_request_hdr text_request_pdu_header; 1614 struct scsi_sgl_task_params tx_sgl_task_params; 1615 struct scsi_sgl_task_params rx_sgl_task_params; 1616 struct iscsi_task_params task_params; 1617 struct e4_iscsi_task_context *fw_task_ctx; 1618 struct qedi_ctx *qedi = qedi_conn->qedi; 1619 struct iscsi_text *text_hdr; 1620 struct scsi_sge *req_sge = NULL; 1621 struct scsi_sge *resp_sge = NULL; 1622 struct qedi_cmd *qedi_cmd; 1623 struct qedi_endpoint *ep; 1624 s16 tid = 0; 1625 u16 sq_idx = 0; 1626 int rval = 0; 1627 1628 req_sge = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1629 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1630 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1631 text_hdr = (struct iscsi_text *)task->hdr; 1632 ep = qedi_conn->ep; 1633 1634 tid = qedi_get_task_idx(qedi); 1635 if (tid == -1) 1636 return -ENOMEM; 1637 1638 fw_task_ctx = 1639 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1640 tid); 1641 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1642 1643 qedi_cmd->task_id = tid; 1644 1645 memset(&task_params, 0, sizeof(task_params)); 1646 memset(&text_request_pdu_header, 0, sizeof(text_request_pdu_header)); 1647 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1648 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1649 1650 /* Update header info */ 1651 text_request_pdu_header.opcode = text_hdr->opcode; 1652 text_request_pdu_header.flags_attr = text_hdr->flags; 1653 1654 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1655 text_request_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1656 text_request_pdu_header.ttt = text_hdr->ttt; 1657 text_request_pdu_header.cmd_sn = be32_to_cpu(text_hdr->cmdsn); 1658 text_request_pdu_header.exp_stat_sn = be32_to_cpu(text_hdr->exp_statsn); 1659 text_request_pdu_header.hdr_second_dword = ntoh24(text_hdr->dlength); 1660 1661 /* Fill tx AHS and rx buffer */ 1662 tx_sgl_task_params.sgl = 1663 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1664 tx_sgl_task_params.sgl_phys_addr.lo = 1665 (u32)(qedi_conn->gen_pdu.req_dma_addr); 1666 tx_sgl_task_params.sgl_phys_addr.hi = 1667 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); 1668 tx_sgl_task_params.total_buffer_size = req_sge->sge_len; 1669 tx_sgl_task_params.num_sges = 1; 1670 1671 rx_sgl_task_params.sgl = 1672 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1673 rx_sgl_task_params.sgl_phys_addr.lo = 1674 (u32)(qedi_conn->gen_pdu.resp_dma_addr); 1675 rx_sgl_task_params.sgl_phys_addr.hi = 1676 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); 1677 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; 1678 rx_sgl_task_params.num_sges = 1; 1679 1680 /* Fill fw input params */ 1681 task_params.context = fw_task_ctx; 1682 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1683 task_params.itid = tid; 1684 task_params.cq_rss_number = 0; 1685 task_params.tx_io_size = ntoh24(text_hdr->dlength); 1686 task_params.rx_io_size = resp_sge->sge_len; 1687 1688 sq_idx = qedi_get_wqe_idx(qedi_conn); 1689 task_params.sqe = &ep->sq[sq_idx]; 1690 1691 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1692 rval = init_initiator_text_request_task(&task_params, 1693 &text_request_pdu_header, 1694 &tx_sgl_task_params, 1695 &rx_sgl_task_params); 1696 if (rval) 1697 return -1; 1698 1699 spin_lock(&qedi_conn->list_lock); 1700 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1701 qedi_cmd->io_cmd_in_list = true; 1702 qedi_conn->active_cmd_count++; 1703 spin_unlock(&qedi_conn->list_lock); 1704 1705 qedi_ring_doorbell(qedi_conn); 1706 return 0; 1707 } 1708 1709 int qedi_send_iscsi_nopout(struct qedi_conn *qedi_conn, 1710 struct iscsi_task *task, 1711 char *datap, int data_len, int unsol) 1712 { 1713 struct iscsi_nop_out_hdr nop_out_pdu_header; 1714 struct scsi_sgl_task_params tx_sgl_task_params; 1715 struct scsi_sgl_task_params rx_sgl_task_params; 1716 struct iscsi_task_params task_params; 1717 struct qedi_ctx *qedi = qedi_conn->qedi; 1718 struct e4_iscsi_task_context *fw_task_ctx; 1719 struct iscsi_nopout *nopout_hdr; 1720 struct scsi_sge *resp_sge = NULL; 1721 struct qedi_cmd *qedi_cmd; 1722 struct qedi_endpoint *ep; 1723 u32 scsi_lun[2]; 1724 s16 tid = 0; 1725 u16 sq_idx = 0; 1726 int rval = 0; 1727 1728 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1729 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1730 nopout_hdr = (struct iscsi_nopout *)task->hdr; 1731 ep = qedi_conn->ep; 1732 1733 tid = qedi_get_task_idx(qedi); 1734 if (tid == -1) 1735 return -ENOMEM; 1736 1737 fw_task_ctx = 1738 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1739 tid); 1740 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1741 1742 qedi_cmd->task_id = tid; 1743 1744 memset(&task_params, 0, sizeof(task_params)); 1745 memset(&nop_out_pdu_header, 0, sizeof(nop_out_pdu_header)); 1746 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1747 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1748 1749 /* Update header info */ 1750 nop_out_pdu_header.opcode = nopout_hdr->opcode; 1751 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_CONST1, 1); 1752 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_RSRV, 0); 1753 1754 memcpy(scsi_lun, &nopout_hdr->lun, sizeof(struct scsi_lun)); 1755 nop_out_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); 1756 nop_out_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); 1757 nop_out_pdu_header.cmd_sn = be32_to_cpu(nopout_hdr->cmdsn); 1758 nop_out_pdu_header.exp_stat_sn = be32_to_cpu(nopout_hdr->exp_statsn); 1759 1760 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1761 1762 if (nopout_hdr->ttt != ISCSI_TTT_ALL_ONES) { 1763 nop_out_pdu_header.itt = be32_to_cpu(nopout_hdr->itt); 1764 nop_out_pdu_header.ttt = be32_to_cpu(nopout_hdr->ttt); 1765 } else { 1766 nop_out_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1767 nop_out_pdu_header.ttt = ISCSI_TTT_ALL_ONES; 1768 1769 spin_lock(&qedi_conn->list_lock); 1770 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1771 qedi_cmd->io_cmd_in_list = true; 1772 qedi_conn->active_cmd_count++; 1773 spin_unlock(&qedi_conn->list_lock); 1774 } 1775 1776 /* Fill tx AHS and rx buffer */ 1777 if (data_len) { 1778 tx_sgl_task_params.sgl = 1779 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1780 tx_sgl_task_params.sgl_phys_addr.lo = 1781 (u32)(qedi_conn->gen_pdu.req_dma_addr); 1782 tx_sgl_task_params.sgl_phys_addr.hi = 1783 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); 1784 tx_sgl_task_params.total_buffer_size = data_len; 1785 tx_sgl_task_params.num_sges = 1; 1786 1787 rx_sgl_task_params.sgl = 1788 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1789 rx_sgl_task_params.sgl_phys_addr.lo = 1790 (u32)(qedi_conn->gen_pdu.resp_dma_addr); 1791 rx_sgl_task_params.sgl_phys_addr.hi = 1792 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); 1793 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; 1794 rx_sgl_task_params.num_sges = 1; 1795 } 1796 1797 /* Fill fw input params */ 1798 task_params.context = fw_task_ctx; 1799 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1800 task_params.itid = tid; 1801 task_params.cq_rss_number = 0; 1802 task_params.tx_io_size = data_len; 1803 task_params.rx_io_size = resp_sge->sge_len; 1804 1805 sq_idx = qedi_get_wqe_idx(qedi_conn); 1806 task_params.sqe = &ep->sq[sq_idx]; 1807 1808 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1809 rval = init_initiator_nop_out_task(&task_params, 1810 &nop_out_pdu_header, 1811 &tx_sgl_task_params, 1812 &rx_sgl_task_params); 1813 if (rval) 1814 return -1; 1815 1816 qedi_ring_doorbell(qedi_conn); 1817 return 0; 1818 } 1819 1820 static int qedi_split_bd(struct qedi_cmd *cmd, u64 addr, int sg_len, 1821 int bd_index) 1822 { 1823 struct scsi_sge *bd = cmd->io_tbl.sge_tbl; 1824 int frag_size, sg_frags; 1825 1826 sg_frags = 0; 1827 1828 while (sg_len) { 1829 if (addr % QEDI_PAGE_SIZE) 1830 frag_size = 1831 (QEDI_PAGE_SIZE - (addr % QEDI_PAGE_SIZE)); 1832 else 1833 frag_size = (sg_len > QEDI_BD_SPLIT_SZ) ? 0 : 1834 (sg_len % QEDI_BD_SPLIT_SZ); 1835 1836 if (frag_size == 0) 1837 frag_size = QEDI_BD_SPLIT_SZ; 1838 1839 bd[bd_index + sg_frags].sge_addr.lo = (addr & 0xffffffff); 1840 bd[bd_index + sg_frags].sge_addr.hi = (addr >> 32); 1841 bd[bd_index + sg_frags].sge_len = (u16)frag_size; 1842 QEDI_INFO(&cmd->conn->qedi->dbg_ctx, QEDI_LOG_IO, 1843 "split sge %d: addr=%llx, len=%x", 1844 (bd_index + sg_frags), addr, frag_size); 1845 1846 addr += (u64)frag_size; 1847 sg_frags++; 1848 sg_len -= frag_size; 1849 } 1850 return sg_frags; 1851 } 1852 1853 static int qedi_map_scsi_sg(struct qedi_ctx *qedi, struct qedi_cmd *cmd) 1854 { 1855 struct scsi_cmnd *sc = cmd->scsi_cmd; 1856 struct scsi_sge *bd = cmd->io_tbl.sge_tbl; 1857 struct scatterlist *sg; 1858 int byte_count = 0; 1859 int bd_count = 0; 1860 int sg_count; 1861 int sg_len; 1862 int sg_frags; 1863 u64 addr, end_addr; 1864 int i; 1865 1866 WARN_ON(scsi_sg_count(sc) > QEDI_ISCSI_MAX_BDS_PER_CMD); 1867 1868 sg_count = dma_map_sg(&qedi->pdev->dev, scsi_sglist(sc), 1869 scsi_sg_count(sc), sc->sc_data_direction); 1870 1871 /* 1872 * New condition to send single SGE as cached-SGL. 1873 * Single SGE with length less than 64K. 1874 */ 1875 sg = scsi_sglist(sc); 1876 if ((sg_count == 1) && (sg_dma_len(sg) <= MAX_SGLEN_FOR_CACHESGL)) { 1877 sg_len = sg_dma_len(sg); 1878 addr = (u64)sg_dma_address(sg); 1879 1880 bd[bd_count].sge_addr.lo = (addr & 0xffffffff); 1881 bd[bd_count].sge_addr.hi = (addr >> 32); 1882 bd[bd_count].sge_len = (u16)sg_len; 1883 1884 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 1885 "single-cached-sgl: bd_count:%d addr=%llx, len=%x", 1886 sg_count, addr, sg_len); 1887 1888 return ++bd_count; 1889 } 1890 1891 scsi_for_each_sg(sc, sg, sg_count, i) { 1892 sg_len = sg_dma_len(sg); 1893 addr = (u64)sg_dma_address(sg); 1894 end_addr = (addr + sg_len); 1895 1896 /* 1897 * first sg elem in the 'list', 1898 * check if end addr is page-aligned. 1899 */ 1900 if ((i == 0) && (sg_count > 1) && (end_addr % QEDI_PAGE_SIZE)) 1901 cmd->use_slowpath = true; 1902 1903 /* 1904 * last sg elem in the 'list', 1905 * check if start addr is page-aligned. 1906 */ 1907 else if ((i == (sg_count - 1)) && 1908 (sg_count > 1) && (addr % QEDI_PAGE_SIZE)) 1909 cmd->use_slowpath = true; 1910 1911 /* 1912 * middle sg elements in list, 1913 * check if start and end addr is page-aligned 1914 */ 1915 else if ((i != 0) && (i != (sg_count - 1)) && 1916 ((addr % QEDI_PAGE_SIZE) || 1917 (end_addr % QEDI_PAGE_SIZE))) 1918 cmd->use_slowpath = true; 1919 1920 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "sg[%d] size=0x%x", 1921 i, sg_len); 1922 1923 if (sg_len > QEDI_BD_SPLIT_SZ) { 1924 sg_frags = qedi_split_bd(cmd, addr, sg_len, bd_count); 1925 } else { 1926 sg_frags = 1; 1927 bd[bd_count].sge_addr.lo = addr & 0xffffffff; 1928 bd[bd_count].sge_addr.hi = addr >> 32; 1929 bd[bd_count].sge_len = sg_len; 1930 } 1931 byte_count += sg_len; 1932 bd_count += sg_frags; 1933 } 1934 1935 if (byte_count != scsi_bufflen(sc)) 1936 QEDI_ERR(&qedi->dbg_ctx, 1937 "byte_count = %d != scsi_bufflen = %d\n", byte_count, 1938 scsi_bufflen(sc)); 1939 else 1940 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "byte_count = %d\n", 1941 byte_count); 1942 1943 WARN_ON(byte_count != scsi_bufflen(sc)); 1944 1945 return bd_count; 1946 } 1947 1948 static void qedi_iscsi_map_sg_list(struct qedi_cmd *cmd) 1949 { 1950 int bd_count; 1951 struct scsi_cmnd *sc = cmd->scsi_cmd; 1952 1953 if (scsi_sg_count(sc)) { 1954 bd_count = qedi_map_scsi_sg(cmd->conn->qedi, cmd); 1955 if (bd_count == 0) 1956 return; 1957 } else { 1958 struct scsi_sge *bd = cmd->io_tbl.sge_tbl; 1959 1960 bd[0].sge_addr.lo = 0; 1961 bd[0].sge_addr.hi = 0; 1962 bd[0].sge_len = 0; 1963 bd_count = 0; 1964 } 1965 cmd->io_tbl.sge_valid = bd_count; 1966 } 1967 1968 static void qedi_cpy_scsi_cdb(struct scsi_cmnd *sc, u32 *dstp) 1969 { 1970 u32 dword; 1971 int lpcnt; 1972 u8 *srcp; 1973 1974 lpcnt = sc->cmd_len / sizeof(dword); 1975 srcp = (u8 *)sc->cmnd; 1976 while (lpcnt--) { 1977 memcpy(&dword, (const void *)srcp, 4); 1978 *dstp = cpu_to_be32(dword); 1979 srcp += 4; 1980 dstp++; 1981 } 1982 if (sc->cmd_len & 0x3) { 1983 dword = (u32)srcp[0] | ((u32)srcp[1] << 8); 1984 *dstp = cpu_to_be32(dword); 1985 } 1986 } 1987 1988 void qedi_trace_io(struct qedi_ctx *qedi, struct iscsi_task *task, 1989 u16 tid, int8_t direction) 1990 { 1991 struct qedi_io_log *io_log; 1992 struct iscsi_conn *conn = task->conn; 1993 struct qedi_conn *qedi_conn = conn->dd_data; 1994 struct scsi_cmnd *sc_cmd = task->sc; 1995 unsigned long flags; 1996 1997 spin_lock_irqsave(&qedi->io_trace_lock, flags); 1998 1999 io_log = &qedi->io_trace_buf[qedi->io_trace_idx]; 2000 io_log->direction = direction; 2001 io_log->task_id = tid; 2002 io_log->cid = qedi_conn->iscsi_conn_id; 2003 io_log->lun = sc_cmd->device->lun; 2004 io_log->op = sc_cmd->cmnd[0]; 2005 io_log->lba[0] = sc_cmd->cmnd[2]; 2006 io_log->lba[1] = sc_cmd->cmnd[3]; 2007 io_log->lba[2] = sc_cmd->cmnd[4]; 2008 io_log->lba[3] = sc_cmd->cmnd[5]; 2009 io_log->bufflen = scsi_bufflen(sc_cmd); 2010 io_log->sg_count = scsi_sg_count(sc_cmd); 2011 io_log->fast_sgs = qedi->fast_sgls; 2012 io_log->cached_sgs = qedi->cached_sgls; 2013 io_log->slow_sgs = qedi->slow_sgls; 2014 io_log->cached_sge = qedi->use_cached_sge; 2015 io_log->slow_sge = qedi->use_slow_sge; 2016 io_log->fast_sge = qedi->use_fast_sge; 2017 io_log->result = sc_cmd->result; 2018 io_log->jiffies = jiffies; 2019 io_log->blk_req_cpu = smp_processor_id(); 2020 2021 if (direction == QEDI_IO_TRACE_REQ) { 2022 /* For requests we only care about the submission CPU */ 2023 io_log->req_cpu = smp_processor_id() % qedi->num_queues; 2024 io_log->intr_cpu = 0; 2025 io_log->blk_rsp_cpu = 0; 2026 } else if (direction == QEDI_IO_TRACE_RSP) { 2027 io_log->req_cpu = smp_processor_id() % qedi->num_queues; 2028 io_log->intr_cpu = qedi->intr_cpu; 2029 io_log->blk_rsp_cpu = smp_processor_id(); 2030 } 2031 2032 qedi->io_trace_idx++; 2033 if (qedi->io_trace_idx == QEDI_IO_TRACE_SIZE) 2034 qedi->io_trace_idx = 0; 2035 2036 qedi->use_cached_sge = false; 2037 qedi->use_slow_sge = false; 2038 qedi->use_fast_sge = false; 2039 2040 spin_unlock_irqrestore(&qedi->io_trace_lock, flags); 2041 } 2042 2043 int qedi_iscsi_send_ioreq(struct iscsi_task *task) 2044 { 2045 struct iscsi_conn *conn = task->conn; 2046 struct iscsi_session *session = conn->session; 2047 struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session); 2048 struct qedi_ctx *qedi = iscsi_host_priv(shost); 2049 struct qedi_conn *qedi_conn = conn->dd_data; 2050 struct qedi_cmd *cmd = task->dd_data; 2051 struct scsi_cmnd *sc = task->sc; 2052 struct iscsi_cmd_hdr cmd_pdu_header; 2053 struct scsi_sgl_task_params tx_sgl_task_params; 2054 struct scsi_sgl_task_params rx_sgl_task_params; 2055 struct scsi_sgl_task_params *prx_sgl = NULL; 2056 struct scsi_sgl_task_params *ptx_sgl = NULL; 2057 struct iscsi_task_params task_params; 2058 struct iscsi_conn_params conn_params; 2059 struct scsi_initiator_cmd_params cmd_params; 2060 struct e4_iscsi_task_context *fw_task_ctx; 2061 struct iscsi_cls_conn *cls_conn; 2062 struct iscsi_scsi_req *hdr = (struct iscsi_scsi_req *)task->hdr; 2063 enum iscsi_task_type task_type = MAX_ISCSI_TASK_TYPE; 2064 struct qedi_endpoint *ep; 2065 u32 scsi_lun[2]; 2066 s16 tid = 0; 2067 u16 sq_idx = 0; 2068 u16 cq_idx; 2069 int rval = 0; 2070 2071 ep = qedi_conn->ep; 2072 cls_conn = qedi_conn->cls_conn; 2073 conn = cls_conn->dd_data; 2074 2075 qedi_iscsi_map_sg_list(cmd); 2076 int_to_scsilun(sc->device->lun, (struct scsi_lun *)scsi_lun); 2077 2078 tid = qedi_get_task_idx(qedi); 2079 if (tid == -1) 2080 return -ENOMEM; 2081 2082 fw_task_ctx = 2083 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 2084 tid); 2085 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 2086 2087 cmd->task_id = tid; 2088 2089 memset(&task_params, 0, sizeof(task_params)); 2090 memset(&cmd_pdu_header, 0, sizeof(cmd_pdu_header)); 2091 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 2092 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 2093 memset(&conn_params, 0, sizeof(conn_params)); 2094 memset(&cmd_params, 0, sizeof(cmd_params)); 2095 2096 cq_idx = smp_processor_id() % qedi->num_queues; 2097 /* Update header info */ 2098 SET_FIELD(cmd_pdu_header.flags_attr, ISCSI_CMD_HDR_ATTR, 2099 ISCSI_ATTR_SIMPLE); 2100 if (hdr->cdb[0] != TEST_UNIT_READY) { 2101 if (sc->sc_data_direction == DMA_TO_DEVICE) { 2102 SET_FIELD(cmd_pdu_header.flags_attr, 2103 ISCSI_CMD_HDR_WRITE, 1); 2104 task_type = ISCSI_TASK_TYPE_INITIATOR_WRITE; 2105 } else { 2106 SET_FIELD(cmd_pdu_header.flags_attr, 2107 ISCSI_CMD_HDR_READ, 1); 2108 task_type = ISCSI_TASK_TYPE_INITIATOR_READ; 2109 } 2110 } 2111 2112 cmd_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); 2113 cmd_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); 2114 2115 qedi_update_itt_map(qedi, tid, task->itt, cmd); 2116 cmd_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 2117 cmd_pdu_header.expected_transfer_length = cpu_to_be32(hdr->data_length); 2118 cmd_pdu_header.hdr_second_dword = ntoh24(hdr->dlength); 2119 cmd_pdu_header.cmd_sn = be32_to_cpu(hdr->cmdsn); 2120 cmd_pdu_header.hdr_first_byte = hdr->opcode; 2121 qedi_cpy_scsi_cdb(sc, (u32 *)cmd_pdu_header.cdb); 2122 2123 /* Fill tx AHS and rx buffer */ 2124 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) { 2125 tx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl; 2126 tx_sgl_task_params.sgl_phys_addr.lo = 2127 (u32)(cmd->io_tbl.sge_tbl_dma); 2128 tx_sgl_task_params.sgl_phys_addr.hi = 2129 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32); 2130 tx_sgl_task_params.total_buffer_size = scsi_bufflen(sc); 2131 tx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid; 2132 if (cmd->use_slowpath) 2133 tx_sgl_task_params.small_mid_sge = true; 2134 } else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) { 2135 rx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl; 2136 rx_sgl_task_params.sgl_phys_addr.lo = 2137 (u32)(cmd->io_tbl.sge_tbl_dma); 2138 rx_sgl_task_params.sgl_phys_addr.hi = 2139 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32); 2140 rx_sgl_task_params.total_buffer_size = scsi_bufflen(sc); 2141 rx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid; 2142 } 2143 2144 /* Add conn param */ 2145 conn_params.first_burst_length = conn->session->first_burst; 2146 conn_params.max_send_pdu_length = conn->max_xmit_dlength; 2147 conn_params.max_burst_length = conn->session->max_burst; 2148 if (conn->session->initial_r2t_en) 2149 conn_params.initial_r2t = true; 2150 if (conn->session->imm_data_en) 2151 conn_params.immediate_data = true; 2152 2153 /* Add cmd params */ 2154 cmd_params.sense_data_buffer_phys_addr.lo = (u32)cmd->sense_buffer_dma; 2155 cmd_params.sense_data_buffer_phys_addr.hi = 2156 (u32)((u64)cmd->sense_buffer_dma >> 32); 2157 /* Fill fw input params */ 2158 task_params.context = fw_task_ctx; 2159 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 2160 task_params.itid = tid; 2161 task_params.cq_rss_number = cq_idx; 2162 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) 2163 task_params.tx_io_size = scsi_bufflen(sc); 2164 else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) 2165 task_params.rx_io_size = scsi_bufflen(sc); 2166 2167 sq_idx = qedi_get_wqe_idx(qedi_conn); 2168 task_params.sqe = &ep->sq[sq_idx]; 2169 2170 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 2171 "%s: %s-SGL: sg_len=0x%x num_sges=0x%x first-sge-lo=0x%x first-sge-hi=0x%x\n", 2172 (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) ? 2173 "Write " : "Read ", (cmd->io_tbl.sge_valid == 1) ? 2174 "Single" : (cmd->use_slowpath ? "SLOW" : "FAST"), 2175 (u16)cmd->io_tbl.sge_valid, scsi_bufflen(sc), 2176 (u32)(cmd->io_tbl.sge_tbl_dma), 2177 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32)); 2178 2179 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 2180 2181 if (task_params.tx_io_size != 0) 2182 ptx_sgl = &tx_sgl_task_params; 2183 if (task_params.rx_io_size != 0) 2184 prx_sgl = &rx_sgl_task_params; 2185 2186 rval = init_initiator_rw_iscsi_task(&task_params, &conn_params, 2187 &cmd_params, &cmd_pdu_header, 2188 ptx_sgl, prx_sgl, 2189 NULL); 2190 if (rval) 2191 return -1; 2192 2193 spin_lock(&qedi_conn->list_lock); 2194 list_add_tail(&cmd->io_cmd, &qedi_conn->active_cmd_list); 2195 cmd->io_cmd_in_list = true; 2196 qedi_conn->active_cmd_count++; 2197 spin_unlock(&qedi_conn->list_lock); 2198 2199 qedi_ring_doorbell(qedi_conn); 2200 return 0; 2201 } 2202 2203 int qedi_iscsi_cleanup_task(struct iscsi_task *task, bool mark_cmd_node_deleted) 2204 { 2205 struct iscsi_task_params task_params; 2206 struct qedi_endpoint *ep; 2207 struct iscsi_conn *conn = task->conn; 2208 struct qedi_conn *qedi_conn = conn->dd_data; 2209 struct qedi_cmd *cmd = task->dd_data; 2210 u16 sq_idx = 0; 2211 int rval = 0; 2212 2213 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 2214 "issue cleanup tid=0x%x itt=0x%x task_state=%d cmd_state=0%x cid=0x%x\n", 2215 cmd->task_id, get_itt(task->itt), task->state, 2216 cmd->state, qedi_conn->iscsi_conn_id); 2217 2218 memset(&task_params, 0, sizeof(task_params)); 2219 ep = qedi_conn->ep; 2220 2221 sq_idx = qedi_get_wqe_idx(qedi_conn); 2222 2223 task_params.sqe = &ep->sq[sq_idx]; 2224 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 2225 task_params.itid = cmd->task_id; 2226 2227 rval = init_cleanup_task(&task_params); 2228 if (rval) 2229 return rval; 2230 2231 qedi_ring_doorbell(qedi_conn); 2232 return 0; 2233 } 2234