1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * QLogic iSCSI Offload Driver 4 * Copyright (c) 2016 Cavium Inc. 5 */ 6 7#include <linux/blkdev.h> 8#include <scsi/scsi_tcq.h> 9#include <linux/delay.h> 10 11#include "qedi.h" 12#include "qedi_iscsi.h" 13#include "qedi_gbl.h" 14#include "qedi_fw_iscsi.h" 15#include "qedi_fw_scsi.h" 16 17static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn, 18 struct iscsi_task *mtask); 19 20void qedi_iscsi_unmap_sg_list(struct qedi_cmd *cmd) 21{ 22 struct scsi_cmnd *sc = cmd->scsi_cmd; 23 24 if (cmd->io_tbl.sge_valid && sc) { 25 cmd->io_tbl.sge_valid = 0; 26 scsi_dma_unmap(sc); 27 } 28} 29 30static void qedi_process_logout_resp(struct qedi_ctx *qedi, 31 union iscsi_cqe *cqe, 32 struct iscsi_task *task, 33 struct qedi_conn *qedi_conn) 34{ 35 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 36 struct iscsi_logout_rsp *resp_hdr; 37 struct iscsi_session *session = conn->session; 38 struct iscsi_logout_response_hdr *cqe_logout_response; 39 struct qedi_cmd *cmd; 40 41 cmd = (struct qedi_cmd *)task->dd_data; 42 cqe_logout_response = &cqe->cqe_common.iscsi_hdr.logout_response; 43 spin_lock(&session->back_lock); 44 resp_hdr = (struct iscsi_logout_rsp *)&qedi_conn->gen_pdu.resp_hdr; 45 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 46 resp_hdr->opcode = cqe_logout_response->opcode; 47 resp_hdr->flags = cqe_logout_response->flags; 48 resp_hdr->hlength = 0; 49 50 resp_hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age); 51 resp_hdr->statsn = cpu_to_be32(cqe_logout_response->stat_sn); 52 resp_hdr->exp_cmdsn = cpu_to_be32(cqe_logout_response->exp_cmd_sn); 53 resp_hdr->max_cmdsn = cpu_to_be32(cqe_logout_response->max_cmd_sn); 54 55 resp_hdr->t2wait = cpu_to_be32(cqe_logout_response->time_2_wait); 56 resp_hdr->t2retain = cpu_to_be32(cqe_logout_response->time_2_retain); 57 58 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, 59 "Freeing tid=0x%x for cid=0x%x\n", 60 cmd->task_id, qedi_conn->iscsi_conn_id); 61 62 spin_lock(&qedi_conn->list_lock); 63 if (likely(cmd->io_cmd_in_list)) { 64 cmd->io_cmd_in_list = false; 65 list_del_init(&cmd->io_cmd); 66 qedi_conn->active_cmd_count--; 67 } else { 68 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 69 "Active cmd list node already deleted, tid=0x%x, cid=0x%x, io_cmd_node=%p\n", 70 cmd->task_id, qedi_conn->iscsi_conn_id, 71 &cmd->io_cmd); 72 } 73 spin_unlock(&qedi_conn->list_lock); 74 75 cmd->state = RESPONSE_RECEIVED; 76 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); 77 78 spin_unlock(&session->back_lock); 79} 80 81static void qedi_process_text_resp(struct qedi_ctx *qedi, 82 union iscsi_cqe *cqe, 83 struct iscsi_task *task, 84 struct qedi_conn *qedi_conn) 85{ 86 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 87 struct iscsi_session *session = conn->session; 88 struct e4_iscsi_task_context *task_ctx; 89 struct iscsi_text_rsp *resp_hdr_ptr; 90 struct iscsi_text_response_hdr *cqe_text_response; 91 struct qedi_cmd *cmd; 92 int pld_len; 93 94 cmd = (struct qedi_cmd *)task->dd_data; 95 task_ctx = qedi_get_task_mem(&qedi->tasks, cmd->task_id); 96 97 cqe_text_response = &cqe->cqe_common.iscsi_hdr.text_response; 98 spin_lock(&session->back_lock); 99 resp_hdr_ptr = (struct iscsi_text_rsp *)&qedi_conn->gen_pdu.resp_hdr; 100 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_hdr)); 101 resp_hdr_ptr->opcode = cqe_text_response->opcode; 102 resp_hdr_ptr->flags = cqe_text_response->flags; 103 resp_hdr_ptr->hlength = 0; 104 105 hton24(resp_hdr_ptr->dlength, 106 (cqe_text_response->hdr_second_dword & 107 ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK)); 108 109 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid, 110 conn->session->age); 111 resp_hdr_ptr->ttt = cqe_text_response->ttt; 112 resp_hdr_ptr->statsn = cpu_to_be32(cqe_text_response->stat_sn); 113 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_text_response->exp_cmd_sn); 114 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_text_response->max_cmd_sn); 115 116 pld_len = cqe_text_response->hdr_second_dword & 117 ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK; 118 qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len; 119 120 memset(task_ctx, '\0', sizeof(*task_ctx)); 121 122 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, 123 "Freeing tid=0x%x for cid=0x%x\n", 124 cmd->task_id, qedi_conn->iscsi_conn_id); 125 126 spin_lock(&qedi_conn->list_lock); 127 if (likely(cmd->io_cmd_in_list)) { 128 cmd->io_cmd_in_list = false; 129 list_del_init(&cmd->io_cmd); 130 qedi_conn->active_cmd_count--; 131 } else { 132 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 133 "Active cmd list node already deleted, tid=0x%x, cid=0x%x, io_cmd_node=%p\n", 134 cmd->task_id, qedi_conn->iscsi_conn_id, 135 &cmd->io_cmd); 136 } 137 spin_unlock(&qedi_conn->list_lock); 138 139 cmd->state = RESPONSE_RECEIVED; 140 141 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, 142 qedi_conn->gen_pdu.resp_buf, 143 (qedi_conn->gen_pdu.resp_wr_ptr - 144 qedi_conn->gen_pdu.resp_buf)); 145 spin_unlock(&session->back_lock); 146} 147 148static void qedi_tmf_resp_work(struct work_struct *work) 149{ 150 struct qedi_cmd *qedi_cmd = 151 container_of(work, struct qedi_cmd, tmf_work); 152 struct qedi_conn *qedi_conn = qedi_cmd->conn; 153 struct qedi_ctx *qedi = qedi_conn->qedi; 154 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 155 struct iscsi_session *session = conn->session; 156 struct iscsi_tm_rsp *resp_hdr_ptr; 157 int rval = 0; 158 159 set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); 160 resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf; 161 162 rval = qedi_cleanup_all_io(qedi, qedi_conn, qedi_cmd->task, true); 163 if (rval) 164 goto exit_tmf_resp; 165 166 spin_lock(&session->back_lock); 167 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0); 168 spin_unlock(&session->back_lock); 169 170exit_tmf_resp: 171 kfree(resp_hdr_ptr); 172 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); 173} 174 175static void qedi_process_tmf_resp(struct qedi_ctx *qedi, 176 union iscsi_cqe *cqe, 177 struct iscsi_task *task, 178 struct qedi_conn *qedi_conn) 179 180{ 181 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 182 struct iscsi_session *session = conn->session; 183 struct iscsi_tmf_response_hdr *cqe_tmp_response; 184 struct iscsi_tm_rsp *resp_hdr_ptr; 185 struct iscsi_tm *tmf_hdr; 186 struct qedi_cmd *qedi_cmd = NULL; 187 188 cqe_tmp_response = &cqe->cqe_common.iscsi_hdr.tmf_response; 189 190 qedi_cmd = task->dd_data; 191 qedi_cmd->tmf_resp_buf = kzalloc(sizeof(*resp_hdr_ptr), GFP_ATOMIC); 192 if (!qedi_cmd->tmf_resp_buf) { 193 QEDI_ERR(&qedi->dbg_ctx, 194 "Failed to allocate resp buf, cid=0x%x\n", 195 qedi_conn->iscsi_conn_id); 196 return; 197 } 198 199 spin_lock(&session->back_lock); 200 resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf; 201 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_tm_rsp)); 202 203 /* Fill up the header */ 204 resp_hdr_ptr->opcode = cqe_tmp_response->opcode; 205 resp_hdr_ptr->flags = cqe_tmp_response->hdr_flags; 206 resp_hdr_ptr->response = cqe_tmp_response->hdr_response; 207 resp_hdr_ptr->hlength = 0; 208 209 hton24(resp_hdr_ptr->dlength, 210 (cqe_tmp_response->hdr_second_dword & 211 ISCSI_TMF_RESPONSE_HDR_DATA_SEG_LEN_MASK)); 212 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid, 213 conn->session->age); 214 resp_hdr_ptr->statsn = cpu_to_be32(cqe_tmp_response->stat_sn); 215 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_tmp_response->exp_cmd_sn); 216 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_tmp_response->max_cmd_sn); 217 218 tmf_hdr = (struct iscsi_tm *)qedi_cmd->task->hdr; 219 220 spin_lock(&qedi_conn->list_lock); 221 if (likely(qedi_cmd->io_cmd_in_list)) { 222 qedi_cmd->io_cmd_in_list = false; 223 list_del_init(&qedi_cmd->io_cmd); 224 qedi_conn->active_cmd_count--; 225 } 226 spin_unlock(&qedi_conn->list_lock); 227 228 if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 229 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) || 230 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 231 ISCSI_TM_FUNC_TARGET_WARM_RESET) || 232 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 233 ISCSI_TM_FUNC_TARGET_COLD_RESET)) { 234 INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_resp_work); 235 queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work); 236 goto unblock_sess; 237 } 238 239 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0); 240 kfree(resp_hdr_ptr); 241 242unblock_sess: 243 spin_unlock(&session->back_lock); 244} 245 246static void qedi_process_login_resp(struct qedi_ctx *qedi, 247 union iscsi_cqe *cqe, 248 struct iscsi_task *task, 249 struct qedi_conn *qedi_conn) 250{ 251 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 252 struct iscsi_session *session = conn->session; 253 struct e4_iscsi_task_context *task_ctx; 254 struct iscsi_login_rsp *resp_hdr_ptr; 255 struct iscsi_login_response_hdr *cqe_login_response; 256 struct qedi_cmd *cmd; 257 int pld_len; 258 259 cmd = (struct qedi_cmd *)task->dd_data; 260 261 cqe_login_response = &cqe->cqe_common.iscsi_hdr.login_response; 262 task_ctx = qedi_get_task_mem(&qedi->tasks, cmd->task_id); 263 264 spin_lock(&session->back_lock); 265 resp_hdr_ptr = (struct iscsi_login_rsp *)&qedi_conn->gen_pdu.resp_hdr; 266 memset(resp_hdr_ptr, 0, sizeof(struct iscsi_login_rsp)); 267 resp_hdr_ptr->opcode = cqe_login_response->opcode; 268 resp_hdr_ptr->flags = cqe_login_response->flags_attr; 269 resp_hdr_ptr->hlength = 0; 270 271 hton24(resp_hdr_ptr->dlength, 272 (cqe_login_response->hdr_second_dword & 273 ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK)); 274 resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid, 275 conn->session->age); 276 resp_hdr_ptr->tsih = cqe_login_response->tsih; 277 resp_hdr_ptr->statsn = cpu_to_be32(cqe_login_response->stat_sn); 278 resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_login_response->exp_cmd_sn); 279 resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_login_response->max_cmd_sn); 280 resp_hdr_ptr->status_class = cqe_login_response->status_class; 281 resp_hdr_ptr->status_detail = cqe_login_response->status_detail; 282 pld_len = cqe_login_response->hdr_second_dword & 283 ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK; 284 qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len; 285 286 spin_lock(&qedi_conn->list_lock); 287 if (likely(cmd->io_cmd_in_list)) { 288 cmd->io_cmd_in_list = false; 289 list_del_init(&cmd->io_cmd); 290 qedi_conn->active_cmd_count--; 291 } 292 spin_unlock(&qedi_conn->list_lock); 293 294 memset(task_ctx, '\0', sizeof(*task_ctx)); 295 296 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, 297 qedi_conn->gen_pdu.resp_buf, 298 (qedi_conn->gen_pdu.resp_wr_ptr - 299 qedi_conn->gen_pdu.resp_buf)); 300 301 spin_unlock(&session->back_lock); 302 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, 303 "Freeing tid=0x%x for cid=0x%x\n", 304 cmd->task_id, qedi_conn->iscsi_conn_id); 305 cmd->state = RESPONSE_RECEIVED; 306} 307 308static void qedi_get_rq_bdq_buf(struct qedi_ctx *qedi, 309 struct iscsi_cqe_unsolicited *cqe, 310 char *ptr, int len) 311{ 312 u16 idx = 0; 313 314 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 315 "pld_len [%d], bdq_prod_idx [%d], idx [%d]\n", 316 len, qedi->bdq_prod_idx, 317 (qedi->bdq_prod_idx % qedi->rq_num_entries)); 318 319 /* Obtain buffer address from rqe_opaque */ 320 idx = cqe->rqe_opaque; 321 if (idx > (QEDI_BDQ_NUM - 1)) { 322 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 323 "wrong idx %d returned by FW, dropping the unsolicited pkt\n", 324 idx); 325 return; 326 } 327 328 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 329 "rqe_opaque [0x%p], idx [%d]\n", cqe->rqe_opaque, idx); 330 331 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 332 "unsol_cqe_type = %d\n", cqe->unsol_cqe_type); 333 switch (cqe->unsol_cqe_type) { 334 case ISCSI_CQE_UNSOLICITED_SINGLE: 335 case ISCSI_CQE_UNSOLICITED_FIRST: 336 if (len) 337 memcpy(ptr, (void *)qedi->bdq[idx].buf_addr, len); 338 break; 339 case ISCSI_CQE_UNSOLICITED_MIDDLE: 340 case ISCSI_CQE_UNSOLICITED_LAST: 341 break; 342 default: 343 break; 344 } 345} 346 347static void qedi_put_rq_bdq_buf(struct qedi_ctx *qedi, 348 struct iscsi_cqe_unsolicited *cqe, 349 int count) 350{ 351 u16 idx = 0; 352 struct scsi_bd *pbl; 353 354 /* Obtain buffer address from rqe_opaque */ 355 idx = cqe->rqe_opaque; 356 if (idx > (QEDI_BDQ_NUM - 1)) { 357 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 358 "wrong idx %d returned by FW, dropping the unsolicited pkt\n", 359 idx); 360 return; 361 } 362 363 pbl = (struct scsi_bd *)qedi->bdq_pbl; 364 pbl += (qedi->bdq_prod_idx % qedi->rq_num_entries); 365 pbl->address.hi = cpu_to_le32(QEDI_U64_HI(qedi->bdq[idx].buf_dma)); 366 pbl->address.lo = cpu_to_le32(QEDI_U64_LO(qedi->bdq[idx].buf_dma)); 367 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 368 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx] idx [%d]\n", 369 pbl, pbl->address.hi, pbl->address.lo, idx); 370 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0; 371 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0; 372 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0; 373 pbl->opaque.iscsi_opaque.opaque = cpu_to_le32(idx); 374 375 /* Increment producer to let f/w know we've handled the frame */ 376 qedi->bdq_prod_idx += count; 377 378 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod); 379 readw(qedi->bdq_primary_prod); 380 381 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod); 382 readw(qedi->bdq_secondary_prod); 383} 384 385static void qedi_unsol_pdu_adjust_bdq(struct qedi_ctx *qedi, 386 struct iscsi_cqe_unsolicited *cqe, 387 u32 pdu_len, u32 num_bdqs, 388 char *bdq_data) 389{ 390 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 391 "num_bdqs [%d]\n", num_bdqs); 392 393 qedi_get_rq_bdq_buf(qedi, cqe, bdq_data, pdu_len); 394 qedi_put_rq_bdq_buf(qedi, cqe, (num_bdqs + 1)); 395} 396 397static int qedi_process_nopin_mesg(struct qedi_ctx *qedi, 398 union iscsi_cqe *cqe, 399 struct iscsi_task *task, 400 struct qedi_conn *qedi_conn, u16 que_idx) 401{ 402 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 403 struct iscsi_session *session = conn->session; 404 struct iscsi_nop_in_hdr *cqe_nop_in; 405 struct iscsi_nopin *hdr; 406 struct qedi_cmd *cmd; 407 int tgt_async_nop = 0; 408 u32 lun[2]; 409 u32 pdu_len, num_bdqs; 410 char bdq_data[QEDI_BDQ_BUF_SIZE]; 411 unsigned long flags; 412 413 spin_lock_bh(&session->back_lock); 414 cqe_nop_in = &cqe->cqe_common.iscsi_hdr.nop_in; 415 416 pdu_len = cqe_nop_in->hdr_second_dword & 417 ISCSI_NOP_IN_HDR_DATA_SEG_LEN_MASK; 418 num_bdqs = pdu_len / QEDI_BDQ_BUF_SIZE; 419 420 hdr = (struct iscsi_nopin *)&qedi_conn->gen_pdu.resp_hdr; 421 memset(hdr, 0, sizeof(struct iscsi_hdr)); 422 hdr->opcode = cqe_nop_in->opcode; 423 hdr->max_cmdsn = cpu_to_be32(cqe_nop_in->max_cmd_sn); 424 hdr->exp_cmdsn = cpu_to_be32(cqe_nop_in->exp_cmd_sn); 425 hdr->statsn = cpu_to_be32(cqe_nop_in->stat_sn); 426 hdr->ttt = cpu_to_be32(cqe_nop_in->ttt); 427 428 if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) { 429 spin_lock_irqsave(&qedi->hba_lock, flags); 430 qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited, 431 pdu_len, num_bdqs, bdq_data); 432 hdr->itt = RESERVED_ITT; 433 tgt_async_nop = 1; 434 spin_unlock_irqrestore(&qedi->hba_lock, flags); 435 goto done; 436 } 437 438 /* Response to one of our nop-outs */ 439 if (task) { 440 cmd = task->dd_data; 441 hdr->flags = ISCSI_FLAG_CMD_FINAL; 442 hdr->itt = build_itt(cqe->cqe_solicited.itid, 443 conn->session->age); 444 lun[0] = 0xffffffff; 445 lun[1] = 0xffffffff; 446 memcpy(&hdr->lun, lun, sizeof(struct scsi_lun)); 447 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, 448 "Freeing tid=0x%x for cid=0x%x\n", 449 cmd->task_id, qedi_conn->iscsi_conn_id); 450 cmd->state = RESPONSE_RECEIVED; 451 spin_lock(&qedi_conn->list_lock); 452 if (likely(cmd->io_cmd_in_list)) { 453 cmd->io_cmd_in_list = false; 454 list_del_init(&cmd->io_cmd); 455 qedi_conn->active_cmd_count--; 456 } 457 458 spin_unlock(&qedi_conn->list_lock); 459 } 460 461done: 462 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, bdq_data, pdu_len); 463 464 spin_unlock_bh(&session->back_lock); 465 return tgt_async_nop; 466} 467 468static void qedi_process_async_mesg(struct qedi_ctx *qedi, 469 union iscsi_cqe *cqe, 470 struct iscsi_task *task, 471 struct qedi_conn *qedi_conn, 472 u16 que_idx) 473{ 474 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 475 struct iscsi_session *session = conn->session; 476 struct iscsi_async_msg_hdr *cqe_async_msg; 477 struct iscsi_async *resp_hdr; 478 u32 lun[2]; 479 u32 pdu_len, num_bdqs; 480 char bdq_data[QEDI_BDQ_BUF_SIZE]; 481 unsigned long flags; 482 483 spin_lock_bh(&session->back_lock); 484 485 cqe_async_msg = &cqe->cqe_common.iscsi_hdr.async_msg; 486 pdu_len = cqe_async_msg->hdr_second_dword & 487 ISCSI_ASYNC_MSG_HDR_DATA_SEG_LEN_MASK; 488 num_bdqs = pdu_len / QEDI_BDQ_BUF_SIZE; 489 490 if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) { 491 spin_lock_irqsave(&qedi->hba_lock, flags); 492 qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited, 493 pdu_len, num_bdqs, bdq_data); 494 spin_unlock_irqrestore(&qedi->hba_lock, flags); 495 } 496 497 resp_hdr = (struct iscsi_async *)&qedi_conn->gen_pdu.resp_hdr; 498 memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); 499 resp_hdr->opcode = cqe_async_msg->opcode; 500 resp_hdr->flags = 0x80; 501 502 lun[0] = cpu_to_be32(cqe_async_msg->lun.lo); 503 lun[1] = cpu_to_be32(cqe_async_msg->lun.hi); 504 memcpy(&resp_hdr->lun, lun, sizeof(struct scsi_lun)); 505 resp_hdr->exp_cmdsn = cpu_to_be32(cqe_async_msg->exp_cmd_sn); 506 resp_hdr->max_cmdsn = cpu_to_be32(cqe_async_msg->max_cmd_sn); 507 resp_hdr->statsn = cpu_to_be32(cqe_async_msg->stat_sn); 508 509 resp_hdr->async_event = cqe_async_msg->async_event; 510 resp_hdr->async_vcode = cqe_async_msg->async_vcode; 511 512 resp_hdr->param1 = cpu_to_be16(cqe_async_msg->param1_rsrv); 513 resp_hdr->param2 = cpu_to_be16(cqe_async_msg->param2_rsrv); 514 resp_hdr->param3 = cpu_to_be16(cqe_async_msg->param3_rsrv); 515 516 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, bdq_data, 517 pdu_len); 518 519 spin_unlock_bh(&session->back_lock); 520} 521 522static void qedi_process_reject_mesg(struct qedi_ctx *qedi, 523 union iscsi_cqe *cqe, 524 struct iscsi_task *task, 525 struct qedi_conn *qedi_conn, 526 uint16_t que_idx) 527{ 528 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 529 struct iscsi_session *session = conn->session; 530 struct iscsi_reject_hdr *cqe_reject; 531 struct iscsi_reject *hdr; 532 u32 pld_len, num_bdqs; 533 unsigned long flags; 534 535 spin_lock_bh(&session->back_lock); 536 cqe_reject = &cqe->cqe_common.iscsi_hdr.reject; 537 pld_len = cqe_reject->hdr_second_dword & 538 ISCSI_REJECT_HDR_DATA_SEG_LEN_MASK; 539 num_bdqs = pld_len / QEDI_BDQ_BUF_SIZE; 540 541 if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) { 542 spin_lock_irqsave(&qedi->hba_lock, flags); 543 qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited, 544 pld_len, num_bdqs, conn->data); 545 spin_unlock_irqrestore(&qedi->hba_lock, flags); 546 } 547 hdr = (struct iscsi_reject *)&qedi_conn->gen_pdu.resp_hdr; 548 memset(hdr, 0, sizeof(struct iscsi_hdr)); 549 hdr->opcode = cqe_reject->opcode; 550 hdr->reason = cqe_reject->hdr_reason; 551 hdr->flags = cqe_reject->hdr_flags; 552 hton24(hdr->dlength, (cqe_reject->hdr_second_dword & 553 ISCSI_REJECT_HDR_DATA_SEG_LEN_MASK)); 554 hdr->max_cmdsn = cpu_to_be32(cqe_reject->max_cmd_sn); 555 hdr->exp_cmdsn = cpu_to_be32(cqe_reject->exp_cmd_sn); 556 hdr->statsn = cpu_to_be32(cqe_reject->stat_sn); 557 hdr->ffffffff = cpu_to_be32(0xffffffff); 558 559 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, 560 conn->data, pld_len); 561 spin_unlock_bh(&session->back_lock); 562} 563 564static void qedi_scsi_completion(struct qedi_ctx *qedi, 565 union iscsi_cqe *cqe, 566 struct iscsi_task *task, 567 struct iscsi_conn *conn) 568{ 569 struct scsi_cmnd *sc_cmd; 570 struct qedi_cmd *cmd = task->dd_data; 571 struct iscsi_session *session = conn->session; 572 struct iscsi_scsi_rsp *hdr; 573 struct iscsi_data_in_hdr *cqe_data_in; 574 int datalen = 0; 575 struct qedi_conn *qedi_conn; 576 u32 iscsi_cid; 577 u8 cqe_err_bits = 0; 578 579 iscsi_cid = cqe->cqe_common.conn_id; 580 qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; 581 582 cqe_data_in = &cqe->cqe_common.iscsi_hdr.data_in; 583 cqe_err_bits = 584 cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits; 585 586 spin_lock_bh(&session->back_lock); 587 /* get the scsi command */ 588 sc_cmd = cmd->scsi_cmd; 589 590 if (!sc_cmd) { 591 QEDI_WARN(&qedi->dbg_ctx, "sc_cmd is NULL!\n"); 592 goto error; 593 } 594 595 if (!sc_cmd->SCp.ptr) { 596 QEDI_WARN(&qedi->dbg_ctx, 597 "SCp.ptr is NULL, returned in another context.\n"); 598 goto error; 599 } 600 601 if (!sc_cmd->request) { 602 QEDI_WARN(&qedi->dbg_ctx, 603 "sc_cmd->request is NULL, sc_cmd=%p.\n", 604 sc_cmd); 605 goto error; 606 } 607 608 if (!sc_cmd->request->q) { 609 QEDI_WARN(&qedi->dbg_ctx, 610 "request->q is NULL so request is not valid, sc_cmd=%p.\n", 611 sc_cmd); 612 goto error; 613 } 614 615 qedi_iscsi_unmap_sg_list(cmd); 616 617 hdr = (struct iscsi_scsi_rsp *)task->hdr; 618 hdr->opcode = cqe_data_in->opcode; 619 hdr->max_cmdsn = cpu_to_be32(cqe_data_in->max_cmd_sn); 620 hdr->exp_cmdsn = cpu_to_be32(cqe_data_in->exp_cmd_sn); 621 hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age); 622 hdr->response = cqe_data_in->reserved1; 623 hdr->cmd_status = cqe_data_in->status_rsvd; 624 hdr->flags = cqe_data_in->flags; 625 hdr->residual_count = cpu_to_be32(cqe_data_in->residual_count); 626 627 if (hdr->cmd_status == SAM_STAT_CHECK_CONDITION) { 628 datalen = cqe_data_in->reserved2 & 629 ISCSI_COMMON_HDR_DATA_SEG_LEN_MASK; 630 memcpy((char *)conn->data, (char *)cmd->sense_buffer, datalen); 631 } 632 633 /* If f/w reports data underrun err then set residual to IO transfer 634 * length, set Underrun flag and clear Overrun flag explicitly 635 */ 636 if (unlikely(cqe_err_bits && 637 GET_FIELD(cqe_err_bits, CQE_ERROR_BITMAP_UNDER_RUN_ERR))) { 638 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 639 "Under flow itt=0x%x proto flags=0x%x tid=0x%x cid 0x%x fw resid 0x%x sc dlen 0x%x\n", 640 hdr->itt, cqe_data_in->flags, cmd->task_id, 641 qedi_conn->iscsi_conn_id, hdr->residual_count, 642 scsi_bufflen(sc_cmd)); 643 hdr->residual_count = cpu_to_be32(scsi_bufflen(sc_cmd)); 644 hdr->flags |= ISCSI_FLAG_CMD_UNDERFLOW; 645 hdr->flags &= (~ISCSI_FLAG_CMD_OVERFLOW); 646 } 647 648 spin_lock(&qedi_conn->list_lock); 649 if (likely(cmd->io_cmd_in_list)) { 650 cmd->io_cmd_in_list = false; 651 list_del_init(&cmd->io_cmd); 652 qedi_conn->active_cmd_count--; 653 } 654 spin_unlock(&qedi_conn->list_lock); 655 656 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, 657 "Freeing tid=0x%x for cid=0x%x\n", 658 cmd->task_id, qedi_conn->iscsi_conn_id); 659 cmd->state = RESPONSE_RECEIVED; 660 if (qedi_io_tracing) 661 qedi_trace_io(qedi, task, cmd->task_id, QEDI_IO_TRACE_RSP); 662 663 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, 664 conn->data, datalen); 665error: 666 spin_unlock_bh(&session->back_lock); 667} 668 669static void qedi_mtask_completion(struct qedi_ctx *qedi, 670 union iscsi_cqe *cqe, 671 struct iscsi_task *task, 672 struct qedi_conn *conn, uint16_t que_idx) 673{ 674 struct iscsi_conn *iscsi_conn; 675 u32 hdr_opcode; 676 677 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte; 678 iscsi_conn = conn->cls_conn->dd_data; 679 680 switch (hdr_opcode) { 681 case ISCSI_OPCODE_SCSI_RESPONSE: 682 case ISCSI_OPCODE_DATA_IN: 683 qedi_scsi_completion(qedi, cqe, task, iscsi_conn); 684 break; 685 case ISCSI_OPCODE_LOGIN_RESPONSE: 686 qedi_process_login_resp(qedi, cqe, task, conn); 687 break; 688 case ISCSI_OPCODE_TMF_RESPONSE: 689 qedi_process_tmf_resp(qedi, cqe, task, conn); 690 break; 691 case ISCSI_OPCODE_TEXT_RESPONSE: 692 qedi_process_text_resp(qedi, cqe, task, conn); 693 break; 694 case ISCSI_OPCODE_LOGOUT_RESPONSE: 695 qedi_process_logout_resp(qedi, cqe, task, conn); 696 break; 697 case ISCSI_OPCODE_NOP_IN: 698 qedi_process_nopin_mesg(qedi, cqe, task, conn, que_idx); 699 break; 700 default: 701 QEDI_ERR(&qedi->dbg_ctx, "unknown opcode\n"); 702 } 703} 704 705static void qedi_process_nopin_local_cmpl(struct qedi_ctx *qedi, 706 struct iscsi_cqe_solicited *cqe, 707 struct iscsi_task *task, 708 struct qedi_conn *qedi_conn) 709{ 710 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 711 struct iscsi_session *session = conn->session; 712 struct qedi_cmd *cmd = task->dd_data; 713 714 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UNSOL, 715 "itid=0x%x, cmd task id=0x%x\n", 716 cqe->itid, cmd->task_id); 717 718 cmd->state = RESPONSE_RECEIVED; 719 720 spin_lock_bh(&session->back_lock); 721 __iscsi_put_task(task); 722 spin_unlock_bh(&session->back_lock); 723} 724 725static void qedi_process_cmd_cleanup_resp(struct qedi_ctx *qedi, 726 struct iscsi_cqe_solicited *cqe, 727 struct iscsi_task *task, 728 struct iscsi_conn *conn) 729{ 730 struct qedi_work_map *work, *work_tmp; 731 u32 proto_itt = cqe->itid; 732 u32 ptmp_itt = 0; 733 itt_t protoitt = 0; 734 int found = 0; 735 struct qedi_cmd *qedi_cmd = NULL; 736 u32 iscsi_cid; 737 struct qedi_conn *qedi_conn; 738 struct qedi_cmd *dbg_cmd; 739 struct iscsi_task *mtask; 740 struct iscsi_tm *tmf_hdr = NULL; 741 742 iscsi_cid = cqe->conn_id; 743 qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; 744 if (!qedi_conn) { 745 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 746 "icid not found 0x%x\n", cqe->conn_id); 747 return; 748 } 749 750 /* Based on this itt get the corresponding qedi_cmd */ 751 spin_lock_bh(&qedi_conn->tmf_work_lock); 752 list_for_each_entry_safe(work, work_tmp, &qedi_conn->tmf_work_list, 753 list) { 754 if (work->rtid == proto_itt) { 755 /* We found the command */ 756 qedi_cmd = work->qedi_cmd; 757 if (!qedi_cmd->list_tmf_work) { 758 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 759 "TMF work not found, cqe->tid=0x%x, cid=0x%x\n", 760 proto_itt, qedi_conn->iscsi_conn_id); 761 WARN_ON(1); 762 } 763 found = 1; 764 mtask = qedi_cmd->task; 765 tmf_hdr = (struct iscsi_tm *)mtask->hdr; 766 767 list_del_init(&work->list); 768 kfree(work); 769 qedi_cmd->list_tmf_work = NULL; 770 } 771 } 772 spin_unlock_bh(&qedi_conn->tmf_work_lock); 773 774 if (found) { 775 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 776 "TMF work, cqe->tid=0x%x, tmf flags=0x%x, cid=0x%x\n", 777 proto_itt, tmf_hdr->flags, qedi_conn->iscsi_conn_id); 778 779 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 780 ISCSI_TM_FUNC_ABORT_TASK) { 781 spin_lock_bh(&conn->session->back_lock); 782 783 protoitt = build_itt(get_itt(tmf_hdr->rtt), 784 conn->session->age); 785 task = iscsi_itt_to_task(conn, protoitt); 786 787 spin_unlock_bh(&conn->session->back_lock); 788 789 if (!task) { 790 QEDI_NOTICE(&qedi->dbg_ctx, 791 "IO task completed, tmf rtt=0x%x, cid=0x%x\n", 792 get_itt(tmf_hdr->rtt), 793 qedi_conn->iscsi_conn_id); 794 return; 795 } 796 797 dbg_cmd = task->dd_data; 798 799 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 800 "Abort tmf rtt=0x%x, i/o itt=0x%x, i/o tid=0x%x, cid=0x%x\n", 801 get_itt(tmf_hdr->rtt), get_itt(task->itt), 802 dbg_cmd->task_id, qedi_conn->iscsi_conn_id); 803 804 if (qedi_cmd->state == CLEANUP_WAIT_FAILED) 805 qedi_cmd->state = CLEANUP_RECV; 806 807 spin_lock(&qedi_conn->list_lock); 808 if (likely(dbg_cmd->io_cmd_in_list)) { 809 dbg_cmd->io_cmd_in_list = false; 810 list_del_init(&dbg_cmd->io_cmd); 811 qedi_conn->active_cmd_count--; 812 } 813 spin_unlock(&qedi_conn->list_lock); 814 qedi_cmd->state = CLEANUP_RECV; 815 wake_up_interruptible(&qedi_conn->wait_queue); 816 } 817 } else if (qedi_conn->cmd_cleanup_req > 0) { 818 spin_lock_bh(&conn->session->back_lock); 819 qedi_get_proto_itt(qedi, cqe->itid, &ptmp_itt); 820 protoitt = build_itt(ptmp_itt, conn->session->age); 821 task = iscsi_itt_to_task(conn, protoitt); 822 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 823 "cleanup io itid=0x%x, protoitt=0x%x, cmd_cleanup_cmpl=%d, cid=0x%x\n", 824 cqe->itid, protoitt, qedi_conn->cmd_cleanup_cmpl, 825 qedi_conn->iscsi_conn_id); 826 827 spin_unlock_bh(&conn->session->back_lock); 828 if (!task) { 829 QEDI_NOTICE(&qedi->dbg_ctx, 830 "task is null, itid=0x%x, cid=0x%x\n", 831 cqe->itid, qedi_conn->iscsi_conn_id); 832 return; 833 } 834 qedi_conn->cmd_cleanup_cmpl++; 835 wake_up(&qedi_conn->wait_queue); 836 837 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, 838 "Freeing tid=0x%x for cid=0x%x\n", 839 cqe->itid, qedi_conn->iscsi_conn_id); 840 841 } else { 842 qedi_get_proto_itt(qedi, cqe->itid, &ptmp_itt); 843 protoitt = build_itt(ptmp_itt, conn->session->age); 844 task = iscsi_itt_to_task(conn, protoitt); 845 QEDI_ERR(&qedi->dbg_ctx, 846 "Delayed or untracked cleanup response, itt=0x%x, tid=0x%x, cid=0x%x, task=%p\n", 847 protoitt, cqe->itid, qedi_conn->iscsi_conn_id, task); 848 } 849} 850 851void qedi_fp_process_cqes(struct qedi_work *work) 852{ 853 struct qedi_ctx *qedi = work->qedi; 854 union iscsi_cqe *cqe = &work->cqe; 855 struct iscsi_task *task = NULL; 856 struct iscsi_nopout *nopout_hdr; 857 struct qedi_conn *q_conn; 858 struct iscsi_conn *conn; 859 struct qedi_cmd *qedi_cmd; 860 u32 comp_type; 861 u32 iscsi_cid; 862 u32 hdr_opcode; 863 u16 que_idx = work->que_idx; 864 u8 cqe_err_bits = 0; 865 866 comp_type = cqe->cqe_common.cqe_type; 867 hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte; 868 cqe_err_bits = 869 cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits; 870 871 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 872 "fw_cid=0x%x, cqe type=0x%x, opcode=0x%x\n", 873 cqe->cqe_common.conn_id, comp_type, hdr_opcode); 874 875 if (comp_type >= MAX_ISCSI_CQES_TYPE) { 876 QEDI_WARN(&qedi->dbg_ctx, "Invalid CqE type\n"); 877 return; 878 } 879 880 iscsi_cid = cqe->cqe_common.conn_id; 881 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; 882 if (!q_conn) { 883 QEDI_WARN(&qedi->dbg_ctx, 884 "Session no longer exists for cid=0x%x!!\n", 885 iscsi_cid); 886 return; 887 } 888 889 conn = q_conn->cls_conn->dd_data; 890 891 if (unlikely(cqe_err_bits && 892 GET_FIELD(cqe_err_bits, 893 CQE_ERROR_BITMAP_DATA_DIGEST_ERR))) { 894 iscsi_conn_failure(conn, ISCSI_ERR_DATA_DGST); 895 return; 896 } 897 898 switch (comp_type) { 899 case ISCSI_CQE_TYPE_SOLICITED: 900 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE: 901 qedi_cmd = container_of(work, struct qedi_cmd, cqe_work); 902 task = qedi_cmd->task; 903 if (!task) { 904 QEDI_WARN(&qedi->dbg_ctx, "task is NULL\n"); 905 return; 906 } 907 908 /* Process NOPIN local completion */ 909 nopout_hdr = (struct iscsi_nopout *)task->hdr; 910 if ((nopout_hdr->itt == RESERVED_ITT) && 911 (cqe->cqe_solicited.itid != (u16)RESERVED_ITT)) { 912 qedi_process_nopin_local_cmpl(qedi, &cqe->cqe_solicited, 913 task, q_conn); 914 } else { 915 cqe->cqe_solicited.itid = 916 qedi_get_itt(cqe->cqe_solicited); 917 /* Process other solicited responses */ 918 qedi_mtask_completion(qedi, cqe, task, q_conn, que_idx); 919 } 920 break; 921 case ISCSI_CQE_TYPE_UNSOLICITED: 922 switch (hdr_opcode) { 923 case ISCSI_OPCODE_NOP_IN: 924 qedi_process_nopin_mesg(qedi, cqe, task, q_conn, 925 que_idx); 926 break; 927 case ISCSI_OPCODE_ASYNC_MSG: 928 qedi_process_async_mesg(qedi, cqe, task, q_conn, 929 que_idx); 930 break; 931 case ISCSI_OPCODE_REJECT: 932 qedi_process_reject_mesg(qedi, cqe, task, q_conn, 933 que_idx); 934 break; 935 } 936 goto exit_fp_process; 937 case ISCSI_CQE_TYPE_DUMMY: 938 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "Dummy CqE\n"); 939 goto exit_fp_process; 940 case ISCSI_CQE_TYPE_TASK_CLEANUP: 941 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "CleanUp CqE\n"); 942 qedi_process_cmd_cleanup_resp(qedi, &cqe->cqe_solicited, task, 943 conn); 944 goto exit_fp_process; 945 default: 946 QEDI_ERR(&qedi->dbg_ctx, "Error cqe.\n"); 947 break; 948 } 949 950exit_fp_process: 951 return; 952} 953 954static void qedi_ring_doorbell(struct qedi_conn *qedi_conn) 955{ 956 struct iscsi_db_data dbell = { 0 }; 957 958 dbell.agg_flags = 0; 959 960 dbell.params |= DB_DEST_XCM << ISCSI_DB_DATA_DEST_SHIFT; 961 dbell.params |= DB_AGG_CMD_SET << ISCSI_DB_DATA_AGG_CMD_SHIFT; 962 dbell.params |= 963 DQ_XCM_ISCSI_SQ_PROD_CMD << ISCSI_DB_DATA_AGG_VAL_SEL_SHIFT; 964 965 dbell.sq_prod = qedi_conn->ep->fw_sq_prod_idx; 966 writel(*(u32 *)&dbell, qedi_conn->ep->p_doorbell); 967 968 /* Make sure fw write idx is coherent, and include both memory barriers 969 * as a failsafe as for some architectures the call is the same but on 970 * others they are two different assembly operations. 971 */ 972 wmb(); 973 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_MP_REQ, 974 "prod_idx=0x%x, fw_prod_idx=0x%x, cid=0x%x\n", 975 qedi_conn->ep->sq_prod_idx, qedi_conn->ep->fw_sq_prod_idx, 976 qedi_conn->iscsi_conn_id); 977} 978 979static u16 qedi_get_wqe_idx(struct qedi_conn *qedi_conn) 980{ 981 struct qedi_endpoint *ep; 982 u16 rval; 983 984 ep = qedi_conn->ep; 985 rval = ep->sq_prod_idx; 986 987 /* Increament SQ index */ 988 ep->sq_prod_idx++; 989 ep->fw_sq_prod_idx++; 990 if (ep->sq_prod_idx == QEDI_SQ_SIZE) 991 ep->sq_prod_idx = 0; 992 993 return rval; 994} 995 996int qedi_send_iscsi_login(struct qedi_conn *qedi_conn, 997 struct iscsi_task *task) 998{ 999 struct iscsi_login_req_hdr login_req_pdu_header; 1000 struct scsi_sgl_task_params tx_sgl_task_params; 1001 struct scsi_sgl_task_params rx_sgl_task_params; 1002 struct iscsi_task_params task_params; 1003 struct e4_iscsi_task_context *fw_task_ctx; 1004 struct qedi_ctx *qedi = qedi_conn->qedi; 1005 struct iscsi_login_req *login_hdr; 1006 struct scsi_sge *resp_sge = NULL; 1007 struct qedi_cmd *qedi_cmd; 1008 struct qedi_endpoint *ep; 1009 s16 tid = 0; 1010 u16 sq_idx = 0; 1011 int rval = 0; 1012 1013 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1014 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1015 ep = qedi_conn->ep; 1016 login_hdr = (struct iscsi_login_req *)task->hdr; 1017 1018 tid = qedi_get_task_idx(qedi); 1019 if (tid == -1) 1020 return -ENOMEM; 1021 1022 fw_task_ctx = 1023 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1024 tid); 1025 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1026 1027 qedi_cmd->task_id = tid; 1028 1029 memset(&task_params, 0, sizeof(task_params)); 1030 memset(&login_req_pdu_header, 0, sizeof(login_req_pdu_header)); 1031 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1032 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1033 /* Update header info */ 1034 login_req_pdu_header.opcode = login_hdr->opcode; 1035 login_req_pdu_header.version_min = login_hdr->min_version; 1036 login_req_pdu_header.version_max = login_hdr->max_version; 1037 login_req_pdu_header.flags_attr = login_hdr->flags; 1038 login_req_pdu_header.isid_tabc = swab32p((u32 *)login_hdr->isid); 1039 login_req_pdu_header.isid_d = swab16p((u16 *)&login_hdr->isid[4]); 1040 1041 login_req_pdu_header.tsih = login_hdr->tsih; 1042 login_req_pdu_header.hdr_second_dword = ntoh24(login_hdr->dlength); 1043 1044 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1045 login_req_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1046 login_req_pdu_header.cid = qedi_conn->iscsi_conn_id; 1047 login_req_pdu_header.cmd_sn = be32_to_cpu(login_hdr->cmdsn); 1048 login_req_pdu_header.exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn); 1049 login_req_pdu_header.exp_stat_sn = 0; 1050 1051 /* Fill tx AHS and rx buffer */ 1052 tx_sgl_task_params.sgl = 1053 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1054 tx_sgl_task_params.sgl_phys_addr.lo = 1055 (u32)(qedi_conn->gen_pdu.req_dma_addr); 1056 tx_sgl_task_params.sgl_phys_addr.hi = 1057 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); 1058 tx_sgl_task_params.total_buffer_size = ntoh24(login_hdr->dlength); 1059 tx_sgl_task_params.num_sges = 1; 1060 1061 rx_sgl_task_params.sgl = 1062 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1063 rx_sgl_task_params.sgl_phys_addr.lo = 1064 (u32)(qedi_conn->gen_pdu.resp_dma_addr); 1065 rx_sgl_task_params.sgl_phys_addr.hi = 1066 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); 1067 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; 1068 rx_sgl_task_params.num_sges = 1; 1069 1070 /* Fill fw input params */ 1071 task_params.context = fw_task_ctx; 1072 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1073 task_params.itid = tid; 1074 task_params.cq_rss_number = 0; 1075 task_params.tx_io_size = ntoh24(login_hdr->dlength); 1076 task_params.rx_io_size = resp_sge->sge_len; 1077 1078 sq_idx = qedi_get_wqe_idx(qedi_conn); 1079 task_params.sqe = &ep->sq[sq_idx]; 1080 1081 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1082 rval = init_initiator_login_request_task(&task_params, 1083 &login_req_pdu_header, 1084 &tx_sgl_task_params, 1085 &rx_sgl_task_params); 1086 if (rval) 1087 return -1; 1088 1089 spin_lock(&qedi_conn->list_lock); 1090 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1091 qedi_cmd->io_cmd_in_list = true; 1092 qedi_conn->active_cmd_count++; 1093 spin_unlock(&qedi_conn->list_lock); 1094 1095 qedi_ring_doorbell(qedi_conn); 1096 return 0; 1097} 1098 1099int qedi_send_iscsi_logout(struct qedi_conn *qedi_conn, 1100 struct iscsi_task *task) 1101{ 1102 struct iscsi_logout_req_hdr logout_pdu_header; 1103 struct scsi_sgl_task_params tx_sgl_task_params; 1104 struct scsi_sgl_task_params rx_sgl_task_params; 1105 struct iscsi_task_params task_params; 1106 struct e4_iscsi_task_context *fw_task_ctx; 1107 struct iscsi_logout *logout_hdr = NULL; 1108 struct qedi_ctx *qedi = qedi_conn->qedi; 1109 struct qedi_cmd *qedi_cmd; 1110 struct qedi_endpoint *ep; 1111 s16 tid = 0; 1112 u16 sq_idx = 0; 1113 int rval = 0; 1114 1115 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1116 logout_hdr = (struct iscsi_logout *)task->hdr; 1117 ep = qedi_conn->ep; 1118 1119 tid = qedi_get_task_idx(qedi); 1120 if (tid == -1) 1121 return -ENOMEM; 1122 1123 fw_task_ctx = 1124 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1125 tid); 1126 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1127 1128 qedi_cmd->task_id = tid; 1129 1130 memset(&task_params, 0, sizeof(task_params)); 1131 memset(&logout_pdu_header, 0, sizeof(logout_pdu_header)); 1132 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1133 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1134 1135 /* Update header info */ 1136 logout_pdu_header.opcode = logout_hdr->opcode; 1137 logout_pdu_header.reason_code = 0x80 | logout_hdr->flags; 1138 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1139 logout_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1140 logout_pdu_header.exp_stat_sn = be32_to_cpu(logout_hdr->exp_statsn); 1141 logout_pdu_header.cmd_sn = be32_to_cpu(logout_hdr->cmdsn); 1142 logout_pdu_header.cid = qedi_conn->iscsi_conn_id; 1143 1144 /* Fill fw input params */ 1145 task_params.context = fw_task_ctx; 1146 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1147 task_params.itid = tid; 1148 task_params.cq_rss_number = 0; 1149 task_params.tx_io_size = 0; 1150 task_params.rx_io_size = 0; 1151 1152 sq_idx = qedi_get_wqe_idx(qedi_conn); 1153 task_params.sqe = &ep->sq[sq_idx]; 1154 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1155 1156 rval = init_initiator_logout_request_task(&task_params, 1157 &logout_pdu_header, 1158 NULL, NULL); 1159 if (rval) 1160 return -1; 1161 1162 spin_lock(&qedi_conn->list_lock); 1163 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1164 qedi_cmd->io_cmd_in_list = true; 1165 qedi_conn->active_cmd_count++; 1166 spin_unlock(&qedi_conn->list_lock); 1167 1168 qedi_ring_doorbell(qedi_conn); 1169 return 0; 1170} 1171 1172int qedi_cleanup_all_io(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn, 1173 struct iscsi_task *task, bool in_recovery) 1174{ 1175 int rval; 1176 struct iscsi_task *ctask; 1177 struct qedi_cmd *cmd, *cmd_tmp; 1178 struct iscsi_tm *tmf_hdr; 1179 unsigned int lun = 0; 1180 bool lun_reset = false; 1181 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 1182 struct iscsi_session *session = conn->session; 1183 1184 /* From recovery, task is NULL or from tmf resp valid task */ 1185 if (task) { 1186 tmf_hdr = (struct iscsi_tm *)task->hdr; 1187 1188 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1189 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) { 1190 lun_reset = true; 1191 lun = scsilun_to_int(&tmf_hdr->lun); 1192 } 1193 } 1194 1195 qedi_conn->cmd_cleanup_req = 0; 1196 qedi_conn->cmd_cleanup_cmpl = 0; 1197 1198 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1199 "active_cmd_count=%d, cid=0x%x, in_recovery=%d, lun_reset=%d\n", 1200 qedi_conn->active_cmd_count, qedi_conn->iscsi_conn_id, 1201 in_recovery, lun_reset); 1202 1203 if (lun_reset) 1204 spin_lock_bh(&session->back_lock); 1205 1206 spin_lock(&qedi_conn->list_lock); 1207 1208 list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list, 1209 io_cmd) { 1210 ctask = cmd->task; 1211 if (ctask == task) 1212 continue; 1213 1214 if (lun_reset) { 1215 if (cmd->scsi_cmd && cmd->scsi_cmd->device) { 1216 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1217 "tid=0x%x itt=0x%x scsi_cmd_ptr=%p device=%p task_state=%d cmd_state=0%x cid=0x%x\n", 1218 cmd->task_id, get_itt(ctask->itt), 1219 cmd->scsi_cmd, cmd->scsi_cmd->device, 1220 ctask->state, cmd->state, 1221 qedi_conn->iscsi_conn_id); 1222 if (cmd->scsi_cmd->device->lun != lun) 1223 continue; 1224 } 1225 } 1226 qedi_conn->cmd_cleanup_req++; 1227 qedi_iscsi_cleanup_task(ctask, true); 1228 1229 cmd->io_cmd_in_list = false; 1230 list_del_init(&cmd->io_cmd); 1231 qedi_conn->active_cmd_count--; 1232 QEDI_WARN(&qedi->dbg_ctx, 1233 "Deleted active cmd list node io_cmd=%p, cid=0x%x\n", 1234 &cmd->io_cmd, qedi_conn->iscsi_conn_id); 1235 } 1236 1237 spin_unlock(&qedi_conn->list_lock); 1238 1239 if (lun_reset) 1240 spin_unlock_bh(&session->back_lock); 1241 1242 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1243 "cmd_cleanup_req=%d, cid=0x%x\n", 1244 qedi_conn->cmd_cleanup_req, 1245 qedi_conn->iscsi_conn_id); 1246 1247 rval = wait_event_interruptible_timeout(qedi_conn->wait_queue, 1248 ((qedi_conn->cmd_cleanup_req == 1249 qedi_conn->cmd_cleanup_cmpl) || 1250 test_bit(QEDI_IN_RECOVERY, 1251 &qedi->flags)), 1252 5 * HZ); 1253 if (rval) { 1254 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1255 "i/o cmd_cleanup_req=%d, equal to cmd_cleanup_cmpl=%d, cid=0x%x\n", 1256 qedi_conn->cmd_cleanup_req, 1257 qedi_conn->cmd_cleanup_cmpl, 1258 qedi_conn->iscsi_conn_id); 1259 1260 return 0; 1261 } 1262 1263 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1264 "i/o cmd_cleanup_req=%d, not equal to cmd_cleanup_cmpl=%d, cid=0x%x\n", 1265 qedi_conn->cmd_cleanup_req, 1266 qedi_conn->cmd_cleanup_cmpl, 1267 qedi_conn->iscsi_conn_id); 1268 1269 iscsi_host_for_each_session(qedi->shost, 1270 qedi_mark_device_missing); 1271 qedi_ops->common->drain(qedi->cdev); 1272 1273 /* Enable IOs for all other sessions except current.*/ 1274 if (!wait_event_interruptible_timeout(qedi_conn->wait_queue, 1275 (qedi_conn->cmd_cleanup_req == 1276 qedi_conn->cmd_cleanup_cmpl) || 1277 test_bit(QEDI_IN_RECOVERY, 1278 &qedi->flags), 1279 5 * HZ)) { 1280 iscsi_host_for_each_session(qedi->shost, 1281 qedi_mark_device_available); 1282 return -1; 1283 } 1284 1285 iscsi_host_for_each_session(qedi->shost, 1286 qedi_mark_device_available); 1287 1288 return 0; 1289} 1290 1291void qedi_clearsq(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn, 1292 struct iscsi_task *task) 1293{ 1294 struct qedi_endpoint *qedi_ep; 1295 int rval; 1296 1297 qedi_ep = qedi_conn->ep; 1298 qedi_conn->cmd_cleanup_req = 0; 1299 qedi_conn->cmd_cleanup_cmpl = 0; 1300 1301 if (!qedi_ep) { 1302 QEDI_WARN(&qedi->dbg_ctx, 1303 "Cannot proceed, ep already disconnected, cid=0x%x\n", 1304 qedi_conn->iscsi_conn_id); 1305 return; 1306 } 1307 1308 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1309 "Clearing SQ for cid=0x%x, conn=%p, ep=%p\n", 1310 qedi_conn->iscsi_conn_id, qedi_conn, qedi_ep); 1311 1312 qedi_ops->clear_sq(qedi->cdev, qedi_ep->handle); 1313 1314 rval = qedi_cleanup_all_io(qedi, qedi_conn, task, true); 1315 if (rval) { 1316 QEDI_ERR(&qedi->dbg_ctx, 1317 "fatal error, need hard reset, cid=0x%x\n", 1318 qedi_conn->iscsi_conn_id); 1319 WARN_ON(1); 1320 } 1321} 1322 1323static int qedi_wait_for_cleanup_request(struct qedi_ctx *qedi, 1324 struct qedi_conn *qedi_conn, 1325 struct iscsi_task *task, 1326 struct qedi_cmd *qedi_cmd, 1327 struct qedi_work_map *list_work) 1328{ 1329 struct qedi_cmd *cmd = (struct qedi_cmd *)task->dd_data; 1330 int wait; 1331 1332 wait = wait_event_interruptible_timeout(qedi_conn->wait_queue, 1333 ((qedi_cmd->state == 1334 CLEANUP_RECV) || 1335 ((qedi_cmd->type == TYPEIO) && 1336 (cmd->state == 1337 RESPONSE_RECEIVED))), 1338 5 * HZ); 1339 if (!wait) { 1340 qedi_cmd->state = CLEANUP_WAIT_FAILED; 1341 1342 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1343 "Cleanup timedout tid=0x%x, issue connection recovery, cid=0x%x\n", 1344 cmd->task_id, qedi_conn->iscsi_conn_id); 1345 1346 return -1; 1347 } 1348 return 0; 1349} 1350 1351static void qedi_tmf_work(struct work_struct *work) 1352{ 1353 struct qedi_cmd *qedi_cmd = 1354 container_of(work, struct qedi_cmd, tmf_work); 1355 struct qedi_conn *qedi_conn = qedi_cmd->conn; 1356 struct qedi_ctx *qedi = qedi_conn->qedi; 1357 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 1358 struct qedi_work_map *list_work = NULL; 1359 struct iscsi_task *mtask; 1360 struct qedi_cmd *cmd; 1361 struct iscsi_task *ctask; 1362 struct iscsi_tm *tmf_hdr; 1363 s16 rval = 0; 1364 s16 tid = 0; 1365 1366 mtask = qedi_cmd->task; 1367 tmf_hdr = (struct iscsi_tm *)mtask->hdr; 1368 set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); 1369 1370 ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt); 1371 if (!ctask || !ctask->sc) { 1372 QEDI_ERR(&qedi->dbg_ctx, "Task already completed\n"); 1373 goto abort_ret; 1374 } 1375 1376 cmd = (struct qedi_cmd *)ctask->dd_data; 1377 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1378 "Abort tmf rtt=0x%x, cmd itt=0x%x, cmd tid=0x%x, cid=0x%x\n", 1379 get_itt(tmf_hdr->rtt), get_itt(ctask->itt), cmd->task_id, 1380 qedi_conn->iscsi_conn_id); 1381 1382 if (qedi_do_not_recover) { 1383 QEDI_ERR(&qedi->dbg_ctx, "DONT SEND CLEANUP/ABORT %d\n", 1384 qedi_do_not_recover); 1385 goto abort_ret; 1386 } 1387 1388 list_work = kzalloc(sizeof(*list_work), GFP_ATOMIC); 1389 if (!list_work) { 1390 QEDI_ERR(&qedi->dbg_ctx, "Memory allocation failed\n"); 1391 goto abort_ret; 1392 } 1393 1394 qedi_cmd->type = TYPEIO; 1395 list_work->qedi_cmd = qedi_cmd; 1396 list_work->rtid = cmd->task_id; 1397 list_work->state = QEDI_WORK_SCHEDULED; 1398 qedi_cmd->list_tmf_work = list_work; 1399 1400 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 1401 "Queue tmf work=%p, list node=%p, cid=0x%x, tmf flags=0x%x\n", 1402 list_work->ptr_tmf_work, list_work, qedi_conn->iscsi_conn_id, 1403 tmf_hdr->flags); 1404 1405 spin_lock_bh(&qedi_conn->tmf_work_lock); 1406 list_add_tail(&list_work->list, &qedi_conn->tmf_work_list); 1407 spin_unlock_bh(&qedi_conn->tmf_work_lock); 1408 1409 qedi_iscsi_cleanup_task(ctask, false); 1410 1411 rval = qedi_wait_for_cleanup_request(qedi, qedi_conn, ctask, qedi_cmd, 1412 list_work); 1413 if (rval == -1) { 1414 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1415 "FW cleanup got escalated, cid=0x%x\n", 1416 qedi_conn->iscsi_conn_id); 1417 goto ldel_exit; 1418 } 1419 1420 tid = qedi_get_task_idx(qedi); 1421 if (tid == -1) { 1422 QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n", 1423 qedi_conn->iscsi_conn_id); 1424 goto ldel_exit; 1425 } 1426 1427 qedi_cmd->task_id = tid; 1428 qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task); 1429 1430abort_ret: 1431 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); 1432 return; 1433 1434ldel_exit: 1435 spin_lock_bh(&qedi_conn->tmf_work_lock); 1436 if (qedi_cmd->list_tmf_work) { 1437 list_del_init(&list_work->list); 1438 qedi_cmd->list_tmf_work = NULL; 1439 kfree(list_work); 1440 } 1441 spin_unlock_bh(&qedi_conn->tmf_work_lock); 1442 1443 spin_lock(&qedi_conn->list_lock); 1444 if (likely(cmd->io_cmd_in_list)) { 1445 cmd->io_cmd_in_list = false; 1446 list_del_init(&cmd->io_cmd); 1447 qedi_conn->active_cmd_count--; 1448 } 1449 spin_unlock(&qedi_conn->list_lock); 1450 1451 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); 1452} 1453 1454static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn, 1455 struct iscsi_task *mtask) 1456{ 1457 struct iscsi_tmf_request_hdr tmf_pdu_header; 1458 struct iscsi_task_params task_params; 1459 struct qedi_ctx *qedi = qedi_conn->qedi; 1460 struct e4_iscsi_task_context *fw_task_ctx; 1461 struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; 1462 struct iscsi_task *ctask; 1463 struct iscsi_tm *tmf_hdr; 1464 struct qedi_cmd *qedi_cmd; 1465 struct qedi_cmd *cmd; 1466 struct qedi_endpoint *ep; 1467 u32 scsi_lun[2]; 1468 s16 tid = 0; 1469 u16 sq_idx = 0; 1470 int rval = 0; 1471 1472 tmf_hdr = (struct iscsi_tm *)mtask->hdr; 1473 qedi_cmd = (struct qedi_cmd *)mtask->dd_data; 1474 ep = qedi_conn->ep; 1475 if (!ep) 1476 return -ENODEV; 1477 1478 tid = qedi_get_task_idx(qedi); 1479 if (tid == -1) 1480 return -ENOMEM; 1481 1482 fw_task_ctx = 1483 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1484 tid); 1485 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1486 1487 qedi_cmd->task_id = tid; 1488 1489 memset(&task_params, 0, sizeof(task_params)); 1490 memset(&tmf_pdu_header, 0, sizeof(tmf_pdu_header)); 1491 1492 /* Update header info */ 1493 qedi_update_itt_map(qedi, tid, mtask->itt, qedi_cmd); 1494 tmf_pdu_header.itt = qedi_set_itt(tid, get_itt(mtask->itt)); 1495 tmf_pdu_header.cmd_sn = be32_to_cpu(tmf_hdr->cmdsn); 1496 1497 memcpy(scsi_lun, &tmf_hdr->lun, sizeof(struct scsi_lun)); 1498 tmf_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); 1499 tmf_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); 1500 1501 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1502 ISCSI_TM_FUNC_ABORT_TASK) { 1503 ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt); 1504 if (!ctask || !ctask->sc) { 1505 QEDI_ERR(&qedi->dbg_ctx, 1506 "Could not get reference task\n"); 1507 return 0; 1508 } 1509 cmd = (struct qedi_cmd *)ctask->dd_data; 1510 tmf_pdu_header.rtt = 1511 qedi_set_itt(cmd->task_id, 1512 get_itt(tmf_hdr->rtt)); 1513 } else { 1514 tmf_pdu_header.rtt = ISCSI_RESERVED_TAG; 1515 } 1516 1517 tmf_pdu_header.opcode = tmf_hdr->opcode; 1518 tmf_pdu_header.function = tmf_hdr->flags; 1519 tmf_pdu_header.hdr_second_dword = ntoh24(tmf_hdr->dlength); 1520 tmf_pdu_header.ref_cmd_sn = be32_to_cpu(tmf_hdr->refcmdsn); 1521 1522 /* Fill fw input params */ 1523 task_params.context = fw_task_ctx; 1524 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1525 task_params.itid = tid; 1526 task_params.cq_rss_number = 0; 1527 task_params.tx_io_size = 0; 1528 task_params.rx_io_size = 0; 1529 1530 sq_idx = qedi_get_wqe_idx(qedi_conn); 1531 task_params.sqe = &ep->sq[sq_idx]; 1532 1533 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1534 rval = init_initiator_tmf_request_task(&task_params, 1535 &tmf_pdu_header); 1536 if (rval) 1537 return -1; 1538 1539 spin_lock(&qedi_conn->list_lock); 1540 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1541 qedi_cmd->io_cmd_in_list = true; 1542 qedi_conn->active_cmd_count++; 1543 spin_unlock(&qedi_conn->list_lock); 1544 1545 qedi_ring_doorbell(qedi_conn); 1546 return 0; 1547} 1548 1549int qedi_iscsi_abort_work(struct qedi_conn *qedi_conn, 1550 struct iscsi_task *mtask) 1551{ 1552 struct qedi_ctx *qedi = qedi_conn->qedi; 1553 struct iscsi_tm *tmf_hdr; 1554 struct qedi_cmd *qedi_cmd = (struct qedi_cmd *)mtask->dd_data; 1555 s16 tid = 0; 1556 1557 tmf_hdr = (struct iscsi_tm *)mtask->hdr; 1558 qedi_cmd->task = mtask; 1559 1560 /* If abort task then schedule the work and return */ 1561 if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1562 ISCSI_TM_FUNC_ABORT_TASK) { 1563 qedi_cmd->state = CLEANUP_WAIT; 1564 INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_work); 1565 queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work); 1566 1567 } else if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1568 ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) || 1569 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1570 ISCSI_TM_FUNC_TARGET_WARM_RESET) || 1571 ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == 1572 ISCSI_TM_FUNC_TARGET_COLD_RESET)) { 1573 tid = qedi_get_task_idx(qedi); 1574 if (tid == -1) { 1575 QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n", 1576 qedi_conn->iscsi_conn_id); 1577 return -1; 1578 } 1579 qedi_cmd->task_id = tid; 1580 1581 qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task); 1582 1583 } else { 1584 QEDI_ERR(&qedi->dbg_ctx, "Invalid tmf, cid=0x%x\n", 1585 qedi_conn->iscsi_conn_id); 1586 return -1; 1587 } 1588 1589 return 0; 1590} 1591 1592int qedi_send_iscsi_text(struct qedi_conn *qedi_conn, 1593 struct iscsi_task *task) 1594{ 1595 struct iscsi_text_request_hdr text_request_pdu_header; 1596 struct scsi_sgl_task_params tx_sgl_task_params; 1597 struct scsi_sgl_task_params rx_sgl_task_params; 1598 struct iscsi_task_params task_params; 1599 struct e4_iscsi_task_context *fw_task_ctx; 1600 struct qedi_ctx *qedi = qedi_conn->qedi; 1601 struct iscsi_text *text_hdr; 1602 struct scsi_sge *req_sge = NULL; 1603 struct scsi_sge *resp_sge = NULL; 1604 struct qedi_cmd *qedi_cmd; 1605 struct qedi_endpoint *ep; 1606 s16 tid = 0; 1607 u16 sq_idx = 0; 1608 int rval = 0; 1609 1610 req_sge = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1611 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1612 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1613 text_hdr = (struct iscsi_text *)task->hdr; 1614 ep = qedi_conn->ep; 1615 1616 tid = qedi_get_task_idx(qedi); 1617 if (tid == -1) 1618 return -ENOMEM; 1619 1620 fw_task_ctx = 1621 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1622 tid); 1623 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1624 1625 qedi_cmd->task_id = tid; 1626 1627 memset(&task_params, 0, sizeof(task_params)); 1628 memset(&text_request_pdu_header, 0, sizeof(text_request_pdu_header)); 1629 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1630 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1631 1632 /* Update header info */ 1633 text_request_pdu_header.opcode = text_hdr->opcode; 1634 text_request_pdu_header.flags_attr = text_hdr->flags; 1635 1636 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1637 text_request_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1638 text_request_pdu_header.ttt = text_hdr->ttt; 1639 text_request_pdu_header.cmd_sn = be32_to_cpu(text_hdr->cmdsn); 1640 text_request_pdu_header.exp_stat_sn = be32_to_cpu(text_hdr->exp_statsn); 1641 text_request_pdu_header.hdr_second_dword = ntoh24(text_hdr->dlength); 1642 1643 /* Fill tx AHS and rx buffer */ 1644 tx_sgl_task_params.sgl = 1645 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1646 tx_sgl_task_params.sgl_phys_addr.lo = 1647 (u32)(qedi_conn->gen_pdu.req_dma_addr); 1648 tx_sgl_task_params.sgl_phys_addr.hi = 1649 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); 1650 tx_sgl_task_params.total_buffer_size = req_sge->sge_len; 1651 tx_sgl_task_params.num_sges = 1; 1652 1653 rx_sgl_task_params.sgl = 1654 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1655 rx_sgl_task_params.sgl_phys_addr.lo = 1656 (u32)(qedi_conn->gen_pdu.resp_dma_addr); 1657 rx_sgl_task_params.sgl_phys_addr.hi = 1658 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); 1659 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; 1660 rx_sgl_task_params.num_sges = 1; 1661 1662 /* Fill fw input params */ 1663 task_params.context = fw_task_ctx; 1664 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1665 task_params.itid = tid; 1666 task_params.cq_rss_number = 0; 1667 task_params.tx_io_size = ntoh24(text_hdr->dlength); 1668 task_params.rx_io_size = resp_sge->sge_len; 1669 1670 sq_idx = qedi_get_wqe_idx(qedi_conn); 1671 task_params.sqe = &ep->sq[sq_idx]; 1672 1673 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1674 rval = init_initiator_text_request_task(&task_params, 1675 &text_request_pdu_header, 1676 &tx_sgl_task_params, 1677 &rx_sgl_task_params); 1678 if (rval) 1679 return -1; 1680 1681 spin_lock(&qedi_conn->list_lock); 1682 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1683 qedi_cmd->io_cmd_in_list = true; 1684 qedi_conn->active_cmd_count++; 1685 spin_unlock(&qedi_conn->list_lock); 1686 1687 qedi_ring_doorbell(qedi_conn); 1688 return 0; 1689} 1690 1691int qedi_send_iscsi_nopout(struct qedi_conn *qedi_conn, 1692 struct iscsi_task *task, 1693 char *datap, int data_len, int unsol) 1694{ 1695 struct iscsi_nop_out_hdr nop_out_pdu_header; 1696 struct scsi_sgl_task_params tx_sgl_task_params; 1697 struct scsi_sgl_task_params rx_sgl_task_params; 1698 struct iscsi_task_params task_params; 1699 struct qedi_ctx *qedi = qedi_conn->qedi; 1700 struct e4_iscsi_task_context *fw_task_ctx; 1701 struct iscsi_nopout *nopout_hdr; 1702 struct scsi_sge *resp_sge = NULL; 1703 struct qedi_cmd *qedi_cmd; 1704 struct qedi_endpoint *ep; 1705 u32 scsi_lun[2]; 1706 s16 tid = 0; 1707 u16 sq_idx = 0; 1708 int rval = 0; 1709 1710 resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1711 qedi_cmd = (struct qedi_cmd *)task->dd_data; 1712 nopout_hdr = (struct iscsi_nopout *)task->hdr; 1713 ep = qedi_conn->ep; 1714 1715 tid = qedi_get_task_idx(qedi); 1716 if (tid == -1) 1717 return -ENOMEM; 1718 1719 fw_task_ctx = 1720 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 1721 tid); 1722 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 1723 1724 qedi_cmd->task_id = tid; 1725 1726 memset(&task_params, 0, sizeof(task_params)); 1727 memset(&nop_out_pdu_header, 0, sizeof(nop_out_pdu_header)); 1728 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 1729 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 1730 1731 /* Update header info */ 1732 nop_out_pdu_header.opcode = nopout_hdr->opcode; 1733 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_CONST1, 1); 1734 SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_RSRV, 0); 1735 1736 memcpy(scsi_lun, &nopout_hdr->lun, sizeof(struct scsi_lun)); 1737 nop_out_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); 1738 nop_out_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); 1739 nop_out_pdu_header.cmd_sn = be32_to_cpu(nopout_hdr->cmdsn); 1740 nop_out_pdu_header.exp_stat_sn = be32_to_cpu(nopout_hdr->exp_statsn); 1741 1742 qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); 1743 1744 if (nopout_hdr->ttt != ISCSI_TTT_ALL_ONES) { 1745 nop_out_pdu_header.itt = be32_to_cpu(nopout_hdr->itt); 1746 nop_out_pdu_header.ttt = be32_to_cpu(nopout_hdr->ttt); 1747 } else { 1748 nop_out_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 1749 nop_out_pdu_header.ttt = ISCSI_TTT_ALL_ONES; 1750 1751 spin_lock(&qedi_conn->list_lock); 1752 list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); 1753 qedi_cmd->io_cmd_in_list = true; 1754 qedi_conn->active_cmd_count++; 1755 spin_unlock(&qedi_conn->list_lock); 1756 } 1757 1758 /* Fill tx AHS and rx buffer */ 1759 if (data_len) { 1760 tx_sgl_task_params.sgl = 1761 (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; 1762 tx_sgl_task_params.sgl_phys_addr.lo = 1763 (u32)(qedi_conn->gen_pdu.req_dma_addr); 1764 tx_sgl_task_params.sgl_phys_addr.hi = 1765 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); 1766 tx_sgl_task_params.total_buffer_size = data_len; 1767 tx_sgl_task_params.num_sges = 1; 1768 1769 rx_sgl_task_params.sgl = 1770 (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; 1771 rx_sgl_task_params.sgl_phys_addr.lo = 1772 (u32)(qedi_conn->gen_pdu.resp_dma_addr); 1773 rx_sgl_task_params.sgl_phys_addr.hi = 1774 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); 1775 rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; 1776 rx_sgl_task_params.num_sges = 1; 1777 } 1778 1779 /* Fill fw input params */ 1780 task_params.context = fw_task_ctx; 1781 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 1782 task_params.itid = tid; 1783 task_params.cq_rss_number = 0; 1784 task_params.tx_io_size = data_len; 1785 task_params.rx_io_size = resp_sge->sge_len; 1786 1787 sq_idx = qedi_get_wqe_idx(qedi_conn); 1788 task_params.sqe = &ep->sq[sq_idx]; 1789 1790 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 1791 rval = init_initiator_nop_out_task(&task_params, 1792 &nop_out_pdu_header, 1793 &tx_sgl_task_params, 1794 &rx_sgl_task_params); 1795 if (rval) 1796 return -1; 1797 1798 qedi_ring_doorbell(qedi_conn); 1799 return 0; 1800} 1801 1802static int qedi_split_bd(struct qedi_cmd *cmd, u64 addr, int sg_len, 1803 int bd_index) 1804{ 1805 struct scsi_sge *bd = cmd->io_tbl.sge_tbl; 1806 int frag_size, sg_frags; 1807 1808 sg_frags = 0; 1809 1810 while (sg_len) { 1811 if (addr % QEDI_PAGE_SIZE) 1812 frag_size = 1813 (QEDI_PAGE_SIZE - (addr % QEDI_PAGE_SIZE)); 1814 else 1815 frag_size = (sg_len > QEDI_BD_SPLIT_SZ) ? 0 : 1816 (sg_len % QEDI_BD_SPLIT_SZ); 1817 1818 if (frag_size == 0) 1819 frag_size = QEDI_BD_SPLIT_SZ; 1820 1821 bd[bd_index + sg_frags].sge_addr.lo = (addr & 0xffffffff); 1822 bd[bd_index + sg_frags].sge_addr.hi = (addr >> 32); 1823 bd[bd_index + sg_frags].sge_len = (u16)frag_size; 1824 QEDI_INFO(&cmd->conn->qedi->dbg_ctx, QEDI_LOG_IO, 1825 "split sge %d: addr=%llx, len=%x", 1826 (bd_index + sg_frags), addr, frag_size); 1827 1828 addr += (u64)frag_size; 1829 sg_frags++; 1830 sg_len -= frag_size; 1831 } 1832 return sg_frags; 1833} 1834 1835static int qedi_map_scsi_sg(struct qedi_ctx *qedi, struct qedi_cmd *cmd) 1836{ 1837 struct scsi_cmnd *sc = cmd->scsi_cmd; 1838 struct scsi_sge *bd = cmd->io_tbl.sge_tbl; 1839 struct scatterlist *sg; 1840 int byte_count = 0; 1841 int bd_count = 0; 1842 int sg_count; 1843 int sg_len; 1844 int sg_frags; 1845 u64 addr, end_addr; 1846 int i; 1847 1848 WARN_ON(scsi_sg_count(sc) > QEDI_ISCSI_MAX_BDS_PER_CMD); 1849 1850 sg_count = dma_map_sg(&qedi->pdev->dev, scsi_sglist(sc), 1851 scsi_sg_count(sc), sc->sc_data_direction); 1852 1853 /* 1854 * New condition to send single SGE as cached-SGL. 1855 * Single SGE with length less than 64K. 1856 */ 1857 sg = scsi_sglist(sc); 1858 if ((sg_count == 1) && (sg_dma_len(sg) <= MAX_SGLEN_FOR_CACHESGL)) { 1859 sg_len = sg_dma_len(sg); 1860 addr = (u64)sg_dma_address(sg); 1861 1862 bd[bd_count].sge_addr.lo = (addr & 0xffffffff); 1863 bd[bd_count].sge_addr.hi = (addr >> 32); 1864 bd[bd_count].sge_len = (u16)sg_len; 1865 1866 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 1867 "single-cached-sgl: bd_count:%d addr=%llx, len=%x", 1868 sg_count, addr, sg_len); 1869 1870 return ++bd_count; 1871 } 1872 1873 scsi_for_each_sg(sc, sg, sg_count, i) { 1874 sg_len = sg_dma_len(sg); 1875 addr = (u64)sg_dma_address(sg); 1876 end_addr = (addr + sg_len); 1877 1878 /* 1879 * first sg elem in the 'list', 1880 * check if end addr is page-aligned. 1881 */ 1882 if ((i == 0) && (sg_count > 1) && (end_addr % QEDI_PAGE_SIZE)) 1883 cmd->use_slowpath = true; 1884 1885 /* 1886 * last sg elem in the 'list', 1887 * check if start addr is page-aligned. 1888 */ 1889 else if ((i == (sg_count - 1)) && 1890 (sg_count > 1) && (addr % QEDI_PAGE_SIZE)) 1891 cmd->use_slowpath = true; 1892 1893 /* 1894 * middle sg elements in list, 1895 * check if start and end addr is page-aligned 1896 */ 1897 else if ((i != 0) && (i != (sg_count - 1)) && 1898 ((addr % QEDI_PAGE_SIZE) || 1899 (end_addr % QEDI_PAGE_SIZE))) 1900 cmd->use_slowpath = true; 1901 1902 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "sg[%d] size=0x%x", 1903 i, sg_len); 1904 1905 if (sg_len > QEDI_BD_SPLIT_SZ) { 1906 sg_frags = qedi_split_bd(cmd, addr, sg_len, bd_count); 1907 } else { 1908 sg_frags = 1; 1909 bd[bd_count].sge_addr.lo = addr & 0xffffffff; 1910 bd[bd_count].sge_addr.hi = addr >> 32; 1911 bd[bd_count].sge_len = sg_len; 1912 } 1913 byte_count += sg_len; 1914 bd_count += sg_frags; 1915 } 1916 1917 if (byte_count != scsi_bufflen(sc)) 1918 QEDI_ERR(&qedi->dbg_ctx, 1919 "byte_count = %d != scsi_bufflen = %d\n", byte_count, 1920 scsi_bufflen(sc)); 1921 else 1922 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "byte_count = %d\n", 1923 byte_count); 1924 1925 WARN_ON(byte_count != scsi_bufflen(sc)); 1926 1927 return bd_count; 1928} 1929 1930static void qedi_iscsi_map_sg_list(struct qedi_cmd *cmd) 1931{ 1932 int bd_count; 1933 struct scsi_cmnd *sc = cmd->scsi_cmd; 1934 1935 if (scsi_sg_count(sc)) { 1936 bd_count = qedi_map_scsi_sg(cmd->conn->qedi, cmd); 1937 if (bd_count == 0) 1938 return; 1939 } else { 1940 struct scsi_sge *bd = cmd->io_tbl.sge_tbl; 1941 1942 bd[0].sge_addr.lo = 0; 1943 bd[0].sge_addr.hi = 0; 1944 bd[0].sge_len = 0; 1945 bd_count = 0; 1946 } 1947 cmd->io_tbl.sge_valid = bd_count; 1948} 1949 1950static void qedi_cpy_scsi_cdb(struct scsi_cmnd *sc, u32 *dstp) 1951{ 1952 u32 dword; 1953 int lpcnt; 1954 u8 *srcp; 1955 1956 lpcnt = sc->cmd_len / sizeof(dword); 1957 srcp = (u8 *)sc->cmnd; 1958 while (lpcnt--) { 1959 memcpy(&dword, (const void *)srcp, 4); 1960 *dstp = cpu_to_be32(dword); 1961 srcp += 4; 1962 dstp++; 1963 } 1964 if (sc->cmd_len & 0x3) { 1965 dword = (u32)srcp[0] | ((u32)srcp[1] << 8); 1966 *dstp = cpu_to_be32(dword); 1967 } 1968} 1969 1970void qedi_trace_io(struct qedi_ctx *qedi, struct iscsi_task *task, 1971 u16 tid, int8_t direction) 1972{ 1973 struct qedi_io_log *io_log; 1974 struct iscsi_conn *conn = task->conn; 1975 struct qedi_conn *qedi_conn = conn->dd_data; 1976 struct scsi_cmnd *sc_cmd = task->sc; 1977 unsigned long flags; 1978 1979 spin_lock_irqsave(&qedi->io_trace_lock, flags); 1980 1981 io_log = &qedi->io_trace_buf[qedi->io_trace_idx]; 1982 io_log->direction = direction; 1983 io_log->task_id = tid; 1984 io_log->cid = qedi_conn->iscsi_conn_id; 1985 io_log->lun = sc_cmd->device->lun; 1986 io_log->op = sc_cmd->cmnd[0]; 1987 io_log->lba[0] = sc_cmd->cmnd[2]; 1988 io_log->lba[1] = sc_cmd->cmnd[3]; 1989 io_log->lba[2] = sc_cmd->cmnd[4]; 1990 io_log->lba[3] = sc_cmd->cmnd[5]; 1991 io_log->bufflen = scsi_bufflen(sc_cmd); 1992 io_log->sg_count = scsi_sg_count(sc_cmd); 1993 io_log->fast_sgs = qedi->fast_sgls; 1994 io_log->cached_sgs = qedi->cached_sgls; 1995 io_log->slow_sgs = qedi->slow_sgls; 1996 io_log->cached_sge = qedi->use_cached_sge; 1997 io_log->slow_sge = qedi->use_slow_sge; 1998 io_log->fast_sge = qedi->use_fast_sge; 1999 io_log->result = sc_cmd->result; 2000 io_log->jiffies = jiffies; 2001 io_log->blk_req_cpu = smp_processor_id(); 2002 2003 if (direction == QEDI_IO_TRACE_REQ) { 2004 /* For requests we only care about the submission CPU */ 2005 io_log->req_cpu = smp_processor_id() % qedi->num_queues; 2006 io_log->intr_cpu = 0; 2007 io_log->blk_rsp_cpu = 0; 2008 } else if (direction == QEDI_IO_TRACE_RSP) { 2009 io_log->req_cpu = smp_processor_id() % qedi->num_queues; 2010 io_log->intr_cpu = qedi->intr_cpu; 2011 io_log->blk_rsp_cpu = smp_processor_id(); 2012 } 2013 2014 qedi->io_trace_idx++; 2015 if (qedi->io_trace_idx == QEDI_IO_TRACE_SIZE) 2016 qedi->io_trace_idx = 0; 2017 2018 qedi->use_cached_sge = false; 2019 qedi->use_slow_sge = false; 2020 qedi->use_fast_sge = false; 2021 2022 spin_unlock_irqrestore(&qedi->io_trace_lock, flags); 2023} 2024 2025int qedi_iscsi_send_ioreq(struct iscsi_task *task) 2026{ 2027 struct iscsi_conn *conn = task->conn; 2028 struct iscsi_session *session = conn->session; 2029 struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session); 2030 struct qedi_ctx *qedi = iscsi_host_priv(shost); 2031 struct qedi_conn *qedi_conn = conn->dd_data; 2032 struct qedi_cmd *cmd = task->dd_data; 2033 struct scsi_cmnd *sc = task->sc; 2034 struct iscsi_cmd_hdr cmd_pdu_header; 2035 struct scsi_sgl_task_params tx_sgl_task_params; 2036 struct scsi_sgl_task_params rx_sgl_task_params; 2037 struct scsi_sgl_task_params *prx_sgl = NULL; 2038 struct scsi_sgl_task_params *ptx_sgl = NULL; 2039 struct iscsi_task_params task_params; 2040 struct iscsi_conn_params conn_params; 2041 struct scsi_initiator_cmd_params cmd_params; 2042 struct e4_iscsi_task_context *fw_task_ctx; 2043 struct iscsi_cls_conn *cls_conn; 2044 struct iscsi_scsi_req *hdr = (struct iscsi_scsi_req *)task->hdr; 2045 enum iscsi_task_type task_type = MAX_ISCSI_TASK_TYPE; 2046 struct qedi_endpoint *ep; 2047 u32 scsi_lun[2]; 2048 s16 tid = 0; 2049 u16 sq_idx = 0; 2050 u16 cq_idx; 2051 int rval = 0; 2052 2053 ep = qedi_conn->ep; 2054 cls_conn = qedi_conn->cls_conn; 2055 conn = cls_conn->dd_data; 2056 2057 qedi_iscsi_map_sg_list(cmd); 2058 int_to_scsilun(sc->device->lun, (struct scsi_lun *)scsi_lun); 2059 2060 tid = qedi_get_task_idx(qedi); 2061 if (tid == -1) 2062 return -ENOMEM; 2063 2064 fw_task_ctx = 2065 (struct e4_iscsi_task_context *)qedi_get_task_mem(&qedi->tasks, 2066 tid); 2067 memset(fw_task_ctx, 0, sizeof(struct e4_iscsi_task_context)); 2068 2069 cmd->task_id = tid; 2070 2071 memset(&task_params, 0, sizeof(task_params)); 2072 memset(&cmd_pdu_header, 0, sizeof(cmd_pdu_header)); 2073 memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); 2074 memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); 2075 memset(&conn_params, 0, sizeof(conn_params)); 2076 memset(&cmd_params, 0, sizeof(cmd_params)); 2077 2078 cq_idx = smp_processor_id() % qedi->num_queues; 2079 /* Update header info */ 2080 SET_FIELD(cmd_pdu_header.flags_attr, ISCSI_CMD_HDR_ATTR, 2081 ISCSI_ATTR_SIMPLE); 2082 if (hdr->cdb[0] != TEST_UNIT_READY) { 2083 if (sc->sc_data_direction == DMA_TO_DEVICE) { 2084 SET_FIELD(cmd_pdu_header.flags_attr, 2085 ISCSI_CMD_HDR_WRITE, 1); 2086 task_type = ISCSI_TASK_TYPE_INITIATOR_WRITE; 2087 } else { 2088 SET_FIELD(cmd_pdu_header.flags_attr, 2089 ISCSI_CMD_HDR_READ, 1); 2090 task_type = ISCSI_TASK_TYPE_INITIATOR_READ; 2091 } 2092 } 2093 2094 cmd_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); 2095 cmd_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); 2096 2097 qedi_update_itt_map(qedi, tid, task->itt, cmd); 2098 cmd_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); 2099 cmd_pdu_header.expected_transfer_length = cpu_to_be32(hdr->data_length); 2100 cmd_pdu_header.hdr_second_dword = ntoh24(hdr->dlength); 2101 cmd_pdu_header.cmd_sn = be32_to_cpu(hdr->cmdsn); 2102 cmd_pdu_header.hdr_first_byte = hdr->opcode; 2103 qedi_cpy_scsi_cdb(sc, (u32 *)cmd_pdu_header.cdb); 2104 2105 /* Fill tx AHS and rx buffer */ 2106 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) { 2107 tx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl; 2108 tx_sgl_task_params.sgl_phys_addr.lo = 2109 (u32)(cmd->io_tbl.sge_tbl_dma); 2110 tx_sgl_task_params.sgl_phys_addr.hi = 2111 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32); 2112 tx_sgl_task_params.total_buffer_size = scsi_bufflen(sc); 2113 tx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid; 2114 if (cmd->use_slowpath) 2115 tx_sgl_task_params.small_mid_sge = true; 2116 } else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) { 2117 rx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl; 2118 rx_sgl_task_params.sgl_phys_addr.lo = 2119 (u32)(cmd->io_tbl.sge_tbl_dma); 2120 rx_sgl_task_params.sgl_phys_addr.hi = 2121 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32); 2122 rx_sgl_task_params.total_buffer_size = scsi_bufflen(sc); 2123 rx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid; 2124 } 2125 2126 /* Add conn param */ 2127 conn_params.first_burst_length = conn->session->first_burst; 2128 conn_params.max_send_pdu_length = conn->max_xmit_dlength; 2129 conn_params.max_burst_length = conn->session->max_burst; 2130 if (conn->session->initial_r2t_en) 2131 conn_params.initial_r2t = true; 2132 if (conn->session->imm_data_en) 2133 conn_params.immediate_data = true; 2134 2135 /* Add cmd params */ 2136 cmd_params.sense_data_buffer_phys_addr.lo = (u32)cmd->sense_buffer_dma; 2137 cmd_params.sense_data_buffer_phys_addr.hi = 2138 (u32)((u64)cmd->sense_buffer_dma >> 32); 2139 /* Fill fw input params */ 2140 task_params.context = fw_task_ctx; 2141 task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; 2142 task_params.itid = tid; 2143 task_params.cq_rss_number = cq_idx; 2144 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) 2145 task_params.tx_io_size = scsi_bufflen(sc); 2146 else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) 2147 task_params.rx_io_size = scsi_bufflen(sc); 2148 2149 sq_idx = qedi_get_wqe_idx(qedi_conn); 2150 task_params.sqe = &ep->sq[sq_idx]; 2151 2152 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 2153 "%s: %s-SGL: sg_len=0x%x num_sges=0x%x first-sge-lo=0x%x first-sge-hi=0x%x\n", 2154 (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) ? 2155 "Write " : "Read ", (cmd->io_tbl.sge_valid == 1) ? 2156 "Single" : (cmd->use_slowpath ? "SLOW" : "FAST"), 2157 (u16)cmd->io_tbl.sge_valid, scsi_bufflen(sc), 2158 (u32)(cmd->io_tbl.sge_tbl_dma), 2159 (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32)); 2160 2161 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 2162 2163 if (task_params.tx_io_size != 0) 2164 ptx_sgl = &tx_sgl_task_params; 2165 if (task_params.rx_io_size != 0) 2166 prx_sgl = &rx_sgl_task_params; 2167 2168 rval = init_initiator_rw_iscsi_task(&task_params, &conn_params, 2169 &cmd_params, &cmd_pdu_header, 2170 ptx_sgl, prx_sgl, 2171 NULL); 2172 if (rval) 2173 return -1; 2174 2175 spin_lock(&qedi_conn->list_lock); 2176 list_add_tail(&cmd->io_cmd, &qedi_conn->active_cmd_list); 2177 cmd->io_cmd_in_list = true; 2178 qedi_conn->active_cmd_count++; 2179 spin_unlock(&qedi_conn->list_lock); 2180 2181 qedi_ring_doorbell(qedi_conn); 2182 return 0; 2183} 2184 2185int qedi_iscsi_cleanup_task(struct iscsi_task *task, bool mark_cmd_node_deleted) 2186{ 2187 struct iscsi_task_params task_params; 2188 struct qedi_endpoint *ep; 2189 struct iscsi_conn *conn = task->conn; 2190 struct qedi_conn *qedi_conn = conn->dd_data; 2191 struct qedi_cmd *cmd = task->dd_data; 2192 u16 sq_idx = 0; 2193 int rval = 0; 2194 2195 QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_SCSI_TM, 2196 "issue cleanup tid=0x%x itt=0x%x task_state=%d cmd_state=0%x cid=0x%x\n", 2197 cmd->task_id, get_itt(task->itt), task->state, 2198 cmd->state, qedi_conn->iscsi_conn_id); 2199 2200 memset(&task_params, 0, sizeof(task_params)); 2201 ep = qedi_conn->ep; 2202 2203 sq_idx = qedi_get_wqe_idx(qedi_conn); 2204 2205 task_params.sqe = &ep->sq[sq_idx]; 2206 memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); 2207 task_params.itid = cmd->task_id; 2208 2209 rval = init_cleanup_task(&task_params); 2210 if (rval) 2211 return rval; 2212 2213 qedi_ring_doorbell(qedi_conn); 2214 return 0; 2215} 2216