Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/twa/tw_osl_cam.c
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1 /* 2 * Copyright (c) 2004-07 Applied Micro Circuits Corporation. 3 * Copyright (c) 2004-05 Vinod Kashyap. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD: releng/9.0/sys/dev/twa/tw_osl_cam.c 212008 2010-08-30 19:15:04Z delphij $ 28 */ 29 30 /* 31 * AMCC'S 3ware driver for 9000 series storage controllers. 32 * 33 * Author: Vinod Kashyap 34 * Modifications by: Adam Radford 35 * Modifications by: Manjunath Ranganathaiah 36 */ 37 38 39 /* 40 * FreeBSD CAM related functions. 41 */ 42 43 44 #include <dev/twa/tw_osl_includes.h> 45 46 #include <cam/cam.h> 47 #include <cam/cam_ccb.h> 48 #include <cam/cam_sim.h> 49 #include <cam/cam_xpt_sim.h> 50 #include <cam/cam_debug.h> 51 #include <cam/cam_periph.h> 52 53 #include <cam/scsi/scsi_all.h> 54 #include <cam/scsi/scsi_message.h> 55 56 static TW_VOID twa_action(struct cam_sim *sim, union ccb *ccb); 57 static TW_VOID twa_poll(struct cam_sim *sim); 58 59 static TW_INT32 tw_osli_execute_scsi(struct tw_osli_req_context *req, 60 union ccb *ccb); 61 62 63 64 /* 65 * Function name: tw_osli_cam_attach 66 * Description: Attaches the driver to CAM. 67 * 68 * Input: sc -- ptr to OSL internal ctlr context 69 * Output: None 70 * Return value: 0 -- success 71 * non-zero-- failure 72 */ 73 TW_INT32 74 tw_osli_cam_attach(struct twa_softc *sc) 75 { 76 struct cam_devq *devq; 77 78 tw_osli_dbg_dprintf(3, sc, "entered"); 79 80 /* 81 * Create the device queue for our SIM. 82 */ 83 if ((devq = cam_simq_alloc(TW_OSLI_MAX_NUM_IOS)) == NULL) { 84 tw_osli_printf(sc, "error = %d", 85 TW_CL_SEVERITY_ERROR_STRING, 86 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 87 0x2100, 88 "Failed to create SIM device queue", 89 ENOMEM); 90 return(ENOMEM); 91 } 92 93 /* 94 * Create a SIM entry. Though we can support TW_OSLI_MAX_NUM_REQUESTS 95 * simultaneous requests, we claim to be able to handle only 96 * TW_OSLI_MAX_NUM_IOS (two less), so that we always have a request 97 * packet available to service ioctls and AENs. 98 */ 99 tw_osli_dbg_dprintf(3, sc, "Calling cam_sim_alloc"); 100 sc->sim = cam_sim_alloc(twa_action, twa_poll, "twa", sc, 101 device_get_unit(sc->bus_dev), sc->sim_lock, 102 TW_OSLI_MAX_NUM_IOS, 1, devq); 103 if (sc->sim == NULL) { 104 cam_simq_free(devq); 105 tw_osli_printf(sc, "error = %d", 106 TW_CL_SEVERITY_ERROR_STRING, 107 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 108 0x2101, 109 "Failed to create a SIM entry", 110 ENOMEM); 111 return(ENOMEM); 112 } 113 114 /* 115 * Register the bus. 116 */ 117 tw_osli_dbg_dprintf(3, sc, "Calling xpt_bus_register"); 118 mtx_lock(sc->sim_lock); 119 if (xpt_bus_register(sc->sim, sc->bus_dev, 0) != CAM_SUCCESS) { 120 cam_sim_free(sc->sim, TRUE); 121 sc->sim = NULL; /* so cam_detach will not try to free it */ 122 tw_osli_printf(sc, "error = %d", 123 TW_CL_SEVERITY_ERROR_STRING, 124 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 125 0x2102, 126 "Failed to register the bus", 127 ENXIO); 128 mtx_unlock(sc->sim_lock); 129 return(ENXIO); 130 } 131 132 tw_osli_dbg_dprintf(3, sc, "Calling xpt_create_path"); 133 if (xpt_create_path(&sc->path, NULL, 134 cam_sim_path(sc->sim), 135 CAM_TARGET_WILDCARD, 136 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 137 xpt_bus_deregister(cam_sim_path (sc->sim)); 138 /* Passing TRUE to cam_sim_free will free the devq as well. */ 139 cam_sim_free(sc->sim, TRUE); 140 tw_osli_printf(sc, "error = %d", 141 TW_CL_SEVERITY_ERROR_STRING, 142 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 143 0x2103, 144 "Failed to create path", 145 ENXIO); 146 mtx_unlock(sc->sim_lock); 147 return(ENXIO); 148 } 149 mtx_unlock(sc->sim_lock); 150 151 tw_osli_dbg_dprintf(3, sc, "exiting"); 152 return(0); 153 } 154 155 156 157 /* 158 * Function name: tw_osli_cam_detach 159 * Description: Detaches the driver from CAM. 160 * 161 * Input: sc -- ptr to OSL internal ctlr context 162 * Output: None 163 * Return value: None 164 */ 165 TW_VOID 166 tw_osli_cam_detach(struct twa_softc *sc) 167 { 168 tw_osli_dbg_dprintf(3, sc, "entered"); 169 170 mtx_lock(sc->sim_lock); 171 172 if (sc->path) 173 xpt_free_path(sc->path); 174 if (sc->sim) { 175 xpt_bus_deregister(cam_sim_path(sc->sim)); 176 /* Passing TRUE to cam_sim_free will free the devq as well. */ 177 cam_sim_free(sc->sim, TRUE); 178 } 179 /* It's ok have 1 hold count while destroying the mutex */ 180 mtx_destroy(sc->sim_lock); 181 } 182 183 184 185 /* 186 * Function name: tw_osli_execute_scsi 187 * Description: Build a fw cmd, based on a CAM style ccb, and 188 * send it down. 189 * 190 * Input: req -- ptr to OSL internal request context 191 * ccb -- ptr to CAM style ccb 192 * Output: None 193 * Return value: 0 -- success 194 * non-zero-- failure 195 */ 196 TW_INT32 197 tw_osli_execute_scsi(struct tw_osli_req_context *req, union ccb *ccb) 198 { 199 struct twa_softc *sc = req->ctlr; 200 struct tw_cl_req_packet *req_pkt; 201 struct tw_cl_scsi_req_packet *scsi_req; 202 struct ccb_hdr *ccb_h = &(ccb->ccb_h); 203 struct ccb_scsiio *csio = &(ccb->csio); 204 TW_INT32 error; 205 206 tw_osli_dbg_dprintf(10, sc, "SCSI I/O request 0x%x", 207 csio->cdb_io.cdb_bytes[0]); 208 209 if (ccb_h->target_id >= TW_CL_MAX_NUM_UNITS) { 210 tw_osli_dbg_dprintf(3, sc, "Invalid target. PTL = %x %x %x", 211 ccb_h->path_id, ccb_h->target_id, ccb_h->target_lun); 212 ccb_h->status |= CAM_TID_INVALID; 213 xpt_done(ccb); 214 return(1); 215 } 216 if (ccb_h->target_lun >= TW_CL_MAX_NUM_LUNS) { 217 tw_osli_dbg_dprintf(3, sc, "Invalid lun. PTL = %x %x %x", 218 ccb_h->path_id, ccb_h->target_id, ccb_h->target_lun); 219 ccb_h->status |= CAM_LUN_INVALID; 220 xpt_done(ccb); 221 return(1); 222 } 223 224 if(ccb_h->flags & CAM_CDB_PHYS) { 225 tw_osli_printf(sc, "", 226 TW_CL_SEVERITY_ERROR_STRING, 227 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 228 0x2105, 229 "Physical CDB address!"); 230 ccb_h->status = CAM_REQ_INVALID; 231 xpt_done(ccb); 232 return(1); 233 } 234 235 /* 236 * We are going to work on this request. Mark it as enqueued (though 237 * we don't actually queue it...) 238 */ 239 ccb_h->status |= CAM_SIM_QUEUED; 240 241 if((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 242 if(ccb_h->flags & CAM_DIR_IN) 243 req->flags |= TW_OSLI_REQ_FLAGS_DATA_IN; 244 else 245 req->flags |= TW_OSLI_REQ_FLAGS_DATA_OUT; 246 } 247 248 /* Build the CL understood request packet for SCSI cmds. */ 249 req_pkt = &req->req_pkt; 250 req_pkt->status = 0; 251 req_pkt->tw_osl_callback = tw_osl_complete_io; 252 scsi_req = &(req_pkt->gen_req_pkt.scsi_req); 253 scsi_req->unit = ccb_h->target_id; 254 scsi_req->lun = ccb_h->target_lun; 255 scsi_req->sense_len = 0; 256 scsi_req->sense_data = (TW_UINT8 *)(&csio->sense_data); 257 scsi_req->scsi_status = 0; 258 if(ccb_h->flags & CAM_CDB_POINTER) 259 scsi_req->cdb = csio->cdb_io.cdb_ptr; 260 else 261 scsi_req->cdb = csio->cdb_io.cdb_bytes; 262 scsi_req->cdb_len = csio->cdb_len; 263 264 if (!(ccb_h->flags & CAM_DATA_PHYS)) { 265 /* Virtual data addresses. Need to convert them... */ 266 tw_osli_dbg_dprintf(3, sc, 267 "XPT_SCSI_IO: Single virtual address!"); 268 if (!(ccb_h->flags & CAM_SCATTER_VALID)) { 269 if (csio->dxfer_len > TW_CL_MAX_IO_SIZE) { 270 tw_osli_printf(sc, "size = %d", 271 TW_CL_SEVERITY_ERROR_STRING, 272 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 273 0x2106, 274 "I/O size too big", 275 csio->dxfer_len); 276 ccb_h->status = CAM_REQ_TOO_BIG; 277 ccb_h->status &= ~CAM_SIM_QUEUED; 278 xpt_done(ccb); 279 return(1); 280 } 281 282 if ((req->length = csio->dxfer_len)) { 283 req->data = csio->data_ptr; 284 scsi_req->sgl_entries = 1; 285 } 286 } else { 287 tw_osli_printf(sc, "", 288 TW_CL_SEVERITY_ERROR_STRING, 289 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 290 0x2107, 291 "XPT_SCSI_IO: Got SGList"); 292 ccb_h->status = CAM_REQ_INVALID; 293 ccb_h->status &= ~CAM_SIM_QUEUED; 294 xpt_done(ccb); 295 return(1); 296 } 297 } else { 298 /* Data addresses are physical. */ 299 tw_osli_printf(sc, "", 300 TW_CL_SEVERITY_ERROR_STRING, 301 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 302 0x2108, 303 "XPT_SCSI_IO: Physical data addresses"); 304 ccb_h->status = CAM_REQ_INVALID; 305 ccb_h->status &= ~CAM_SIM_QUEUED; 306 xpt_done(ccb); 307 return(1); 308 } 309 310 req->deadline = tw_osl_get_local_time() + (ccb_h->timeout / 1000); 311 312 313 /* 314 * twa_map_load_data_callback will fill in the SGL, 315 * and submit the I/O. 316 */ 317 error = tw_osli_map_request(req); 318 if ((error) && (req->flags & TW_OSLI_REQ_FLAGS_FAILED)) { 319 req->deadline = 0; 320 ccb_h->status = CAM_REQ_CMP_ERR; 321 ccb_h->status &= ~CAM_SIM_QUEUED; 322 xpt_done(ccb); 323 } 324 return(error); 325 } 326 327 328 329 /* 330 * Function name: twa_action 331 * Description: Driver entry point for CAM's use. 332 * 333 * Input: sim -- sim corresponding to the ctlr 334 * ccb -- ptr to CAM request 335 * Output: None 336 * Return value: None 337 */ 338 TW_VOID 339 twa_action(struct cam_sim *sim, union ccb *ccb) 340 { 341 struct twa_softc *sc = (struct twa_softc *)cam_sim_softc(sim); 342 struct ccb_hdr *ccb_h = &(ccb->ccb_h); 343 344 switch (ccb_h->func_code) { 345 case XPT_SCSI_IO: /* SCSI I/O */ 346 { 347 struct tw_osli_req_context *req; 348 349 req = tw_osli_get_request(sc); 350 if (req == NULL) { 351 tw_osli_dbg_dprintf(2, sc, "Cannot get request pkt."); 352 /* 353 * Freeze the simq to maintain ccb ordering. The next 354 * ccb that gets completed will unfreeze the simq. 355 */ 356 ccb_h->status &= ~CAM_SIM_QUEUED; 357 ccb_h->status |= CAM_REQUEUE_REQ; 358 xpt_done(ccb); 359 break; 360 } 361 362 if ((tw_cl_is_reset_needed(&(req->ctlr->ctlr_handle)))) { 363 ccb_h->status &= ~CAM_SIM_QUEUED; 364 ccb_h->status |= CAM_REQUEUE_REQ; 365 xpt_done(ccb); 366 tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); 367 break; 368 } 369 370 req->req_handle.osl_req_ctxt = req; 371 req->req_handle.is_io = TW_CL_TRUE; 372 req->orig_req = ccb; 373 if (tw_osli_execute_scsi(req, ccb)) 374 tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); 375 break; 376 } 377 378 case XPT_ABORT: 379 tw_osli_dbg_dprintf(2, sc, "Abort request."); 380 ccb_h->status = CAM_UA_ABORT; 381 xpt_done(ccb); 382 break; 383 384 case XPT_RESET_BUS: 385 tw_cl_create_event(&(sc->ctlr_handle), TW_CL_FALSE, 386 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 387 0x2108, 0x3, TW_CL_SEVERITY_INFO_STRING, 388 "Received Reset Bus request from CAM", 389 " "); 390 391 tw_cl_set_reset_needed(&(sc->ctlr_handle)); 392 ccb_h->status = CAM_REQ_CMP; 393 xpt_done(ccb); 394 break; 395 396 case XPT_SET_TRAN_SETTINGS: 397 tw_osli_dbg_dprintf(3, sc, "XPT_SET_TRAN_SETTINGS"); 398 399 /* 400 * This command is not supported, since it's very specific 401 * to SCSI, and we are doing ATA. 402 */ 403 ccb_h->status = CAM_FUNC_NOTAVAIL; 404 xpt_done(ccb); 405 break; 406 407 case XPT_GET_TRAN_SETTINGS: 408 { 409 struct ccb_trans_settings *cts = &ccb->cts; 410 struct ccb_trans_settings_scsi *scsi = 411 &cts->proto_specific.scsi; 412 struct ccb_trans_settings_spi *spi = 413 &cts->xport_specific.spi; 414 415 cts->protocol = PROTO_SCSI; 416 cts->protocol_version = SCSI_REV_2; 417 cts->transport = XPORT_SPI; 418 cts->transport_version = 2; 419 420 spi->valid = CTS_SPI_VALID_DISC; 421 spi->flags = CTS_SPI_FLAGS_DISC_ENB; 422 scsi->valid = CTS_SCSI_VALID_TQ; 423 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 424 tw_osli_dbg_dprintf(3, sc, "XPT_GET_TRAN_SETTINGS"); 425 ccb_h->status = CAM_REQ_CMP; 426 xpt_done(ccb); 427 break; 428 } 429 430 case XPT_CALC_GEOMETRY: 431 tw_osli_dbg_dprintf(3, sc, "XPT_CALC_GEOMETRY"); 432 cam_calc_geometry(&ccb->ccg, 1/* extended */); 433 xpt_done(ccb); 434 break; 435 436 case XPT_PATH_INQ: /* Path inquiry -- get twa properties */ 437 { 438 struct ccb_pathinq *path_inq = &ccb->cpi; 439 440 tw_osli_dbg_dprintf(3, sc, "XPT_PATH_INQ request"); 441 442 path_inq->version_num = 1; 443 path_inq->hba_inquiry = 0; 444 path_inq->target_sprt = 0; 445 path_inq->hba_misc = 0; 446 path_inq->hba_eng_cnt = 0; 447 path_inq->max_target = TW_CL_MAX_NUM_UNITS; 448 path_inq->max_lun = TW_CL_MAX_NUM_LUNS - 1; 449 path_inq->unit_number = cam_sim_unit(sim); 450 path_inq->bus_id = cam_sim_bus(sim); 451 path_inq->initiator_id = TW_CL_MAX_NUM_UNITS; 452 path_inq->base_transfer_speed = 100000; 453 strncpy(path_inq->sim_vid, "FreeBSD", SIM_IDLEN); 454 strncpy(path_inq->hba_vid, "3ware", HBA_IDLEN); 455 strncpy(path_inq->dev_name, cam_sim_name(sim), DEV_IDLEN); 456 path_inq->transport = XPORT_SPI; 457 path_inq->transport_version = 2; 458 path_inq->protocol = PROTO_SCSI; 459 path_inq->protocol_version = SCSI_REV_2; 460 path_inq->maxio = TW_CL_MAX_IO_SIZE; 461 ccb_h->status = CAM_REQ_CMP; 462 xpt_done(ccb); 463 break; 464 } 465 466 default: 467 tw_osli_dbg_dprintf(3, sc, "func_code = %x", ccb_h->func_code); 468 ccb_h->status = CAM_REQ_INVALID; 469 xpt_done(ccb); 470 break; 471 } 472 } 473 474 475 476 /* 477 * Function name: twa_poll 478 * Description: Driver entry point called when interrupts are not 479 * available. 480 * 481 * Input: sim -- sim corresponding to the controller 482 * Output: None 483 * Return value: None 484 */ 485 TW_VOID 486 twa_poll(struct cam_sim *sim) 487 { 488 struct twa_softc *sc = (struct twa_softc *)(cam_sim_softc(sim)); 489 490 tw_osli_dbg_dprintf(3, sc, "entering; sc = %p", sc); 491 tw_cl_interrupt(&(sc->ctlr_handle)); 492 tw_osli_dbg_dprintf(3, sc, "exiting; sc = %p", sc); 493 } 494 495 496 497 /* 498 * Function name: tw_osli_request_bus_scan 499 * Description: Requests CAM for a scan of the bus. 500 * 501 * Input: sc -- ptr to per ctlr structure 502 * Output: None 503 * Return value: 0 -- success 504 * non-zero-- failure 505 */ 506 TW_INT32 507 tw_osli_request_bus_scan(struct twa_softc *sc) 508 { 509 union ccb *ccb; 510 511 tw_osli_dbg_dprintf(3, sc, "entering"); 512 513 /* If we get here before sc->sim is initialized, return an error. */ 514 if (!(sc->sim)) 515 return(ENXIO); 516 if ((ccb = xpt_alloc_ccb()) == NULL) 517 return(ENOMEM); 518 mtx_lock(sc->sim_lock); 519 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph, cam_sim_path(sc->sim), 520 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 521 xpt_free_ccb(ccb); 522 mtx_unlock(sc->sim_lock); 523 return(EIO); 524 } 525 526 xpt_rescan(ccb); 527 mtx_unlock(sc->sim_lock); 528 return(0); 529 } 530 531 532 533 /* 534 * Function name: tw_osli_disallow_new_requests 535 * Description: Calls the appropriate CAM function, so as to freeze 536 * the flow of new requests from CAM to this controller. 537 * 538 * Input: sc -- ptr to OSL internal ctlr context 539 * req_handle -- ptr to request handle sent by OSL. 540 * Output: None 541 * Return value: None 542 */ 543 TW_VOID 544 tw_osli_disallow_new_requests(struct twa_softc *sc, 545 struct tw_cl_req_handle *req_handle) 546 { 547 /* Only freeze/release the simq for IOs */ 548 if (req_handle->is_io) { 549 struct tw_osli_req_context *req = req_handle->osl_req_ctxt; 550 union ccb *ccb = (union ccb *)(req->orig_req); 551 552 xpt_freeze_simq(sc->sim, 1); 553 ccb->ccb_h.status |= CAM_RELEASE_SIMQ; 554 } 555 } 556 557 558 559 /* 560 * Function name: tw_osl_timeout 561 * Description: Call to timeout(). 562 * 563 * Input: req_handle -- ptr to request handle sent by OSL. 564 * Output: None 565 * Return value: None 566 */ 567 TW_VOID 568 tw_osl_timeout(struct tw_cl_req_handle *req_handle) 569 { 570 struct tw_osli_req_context *req = req_handle->osl_req_ctxt; 571 union ccb *ccb = (union ccb *)(req->orig_req); 572 struct ccb_hdr *ccb_h = &(ccb->ccb_h); 573 574 req->deadline = tw_osl_get_local_time() + (ccb_h->timeout / 1000); 575 } 576 577 578 579 /* 580 * Function name: tw_osl_untimeout 581 * Description: Inverse of call to timeout(). 582 * 583 * Input: req_handle -- ptr to request handle sent by OSL. 584 * Output: None 585 * Return value: None 586 */ 587 TW_VOID 588 tw_osl_untimeout(struct tw_cl_req_handle *req_handle) 589 { 590 struct tw_osli_req_context *req = req_handle->osl_req_ctxt; 591 592 req->deadline = 0; 593 } 594 595 596 597 /* 598 * Function name: tw_osl_scan_bus 599 * Description: CL calls this function to request for a bus scan. 600 * 601 * Input: ctlr_handle -- ptr to controller handle 602 * Output: None 603 * Return value: None 604 */ 605 TW_VOID 606 tw_osl_scan_bus(struct tw_cl_ctlr_handle *ctlr_handle) 607 { 608 struct twa_softc *sc = ctlr_handle->osl_ctlr_ctxt; 609 TW_INT32 error; 610 611 if ((error = tw_osli_request_bus_scan(sc))) 612 tw_osli_printf(sc, "error = %d", 613 TW_CL_SEVERITY_ERROR_STRING, 614 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 615 0x2109, 616 "Bus scan request to CAM failed", 617 error); 618 } 619 620 621 622 /* 623 * Function name: tw_osl_complete_io 624 * Description: Called to complete CAM scsi requests. 625 * 626 * Input: req_handle -- ptr to request handle 627 * Output: None 628 * Return value: None 629 */ 630 TW_VOID 631 tw_osl_complete_io(struct tw_cl_req_handle *req_handle) 632 { 633 struct tw_osli_req_context *req = req_handle->osl_req_ctxt; 634 struct tw_cl_req_packet *req_pkt = 635 (struct tw_cl_req_packet *)(&req->req_pkt); 636 struct tw_cl_scsi_req_packet *scsi_req; 637 struct twa_softc *sc = req->ctlr; 638 union ccb *ccb = (union ccb *)(req->orig_req); 639 640 tw_osli_dbg_dprintf(10, sc, "entering"); 641 642 if (req->state != TW_OSLI_REQ_STATE_BUSY) 643 tw_osli_printf(sc, "request = %p, status = %d", 644 TW_CL_SEVERITY_ERROR_STRING, 645 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 646 0x210A, 647 "Unposted command completed!!", 648 req, req->state); 649 650 /* 651 * Remove request from the busy queue. Just mark it complete. 652 * There's no need to move it into the complete queue as we are 653 * going to be done with it right now. 654 */ 655 req->state = TW_OSLI_REQ_STATE_COMPLETE; 656 tw_osli_req_q_remove_item(req, TW_OSLI_BUSY_Q); 657 658 tw_osli_unmap_request(req); 659 660 req->deadline = 0; 661 if (req->error_code) { 662 /* This request never got submitted to the firmware. */ 663 if (req->error_code == EBUSY) { 664 /* 665 * Cmd queue is full, or the Common Layer is out of 666 * resources. The simq will already have been frozen. 667 * When this ccb gets completed will unfreeze the simq. 668 */ 669 ccb->ccb_h.status |= CAM_REQUEUE_REQ; 670 } 671 else if (req->error_code == EFBIG) 672 ccb->ccb_h.status = CAM_REQ_TOO_BIG; 673 else 674 ccb->ccb_h.status = CAM_REQ_CMP_ERR; 675 } else { 676 scsi_req = &(req_pkt->gen_req_pkt.scsi_req); 677 if (req_pkt->status == TW_CL_ERR_REQ_SUCCESS) 678 ccb->ccb_h.status = CAM_REQ_CMP; 679 else { 680 if (req_pkt->status & TW_CL_ERR_REQ_INVALID_TARGET) 681 ccb->ccb_h.status |= CAM_TID_INVALID; 682 else if (req_pkt->status & TW_CL_ERR_REQ_INVALID_LUN) 683 ccb->ccb_h.status |= CAM_LUN_INVALID; 684 else if (req_pkt->status & TW_CL_ERR_REQ_SCSI_ERROR) 685 ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR; 686 else if (req_pkt->status & TW_CL_ERR_REQ_BUS_RESET) 687 ccb->ccb_h.status |= (CAM_REQUEUE_REQ | CAM_SCSI_BUS_RESET); 688 /* 689 * If none of the above errors occurred, simply 690 * mark completion error. 691 */ 692 if (ccb->ccb_h.status == 0) 693 ccb->ccb_h.status = CAM_REQ_CMP_ERR; 694 695 if (req_pkt->status & TW_CL_ERR_REQ_AUTO_SENSE_VALID) { 696 ccb->csio.sense_len = scsi_req->sense_len; 697 ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 698 } 699 } 700 701 ccb->csio.scsi_status = scsi_req->scsi_status; 702 } 703 704 ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 705 mtx_lock(sc->sim_lock); 706 xpt_done(ccb); 707 mtx_unlock(sc->sim_lock); 708 if (! req->error_code) 709 /* twa_action will free the request otherwise */ 710 tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); 711 } 712
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