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: head/sys/dev/twa/tw_osl_cam.c 257381 2013-10-30 14:04:47Z nwhitehorn $ 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/raid/twa/tw_osl_includes.h> 45 46 #include <bus/cam/cam.h> 47 #include <bus/cam/cam_ccb.h> 48 #include <bus/cam/cam_sim.h> 49 #include <bus/cam/cam_xpt_sim.h> 50 #include <bus/cam/cam_debug.h> 51 #include <bus/cam/cam_periph.h> 52 #include <bus/cam/cam_xpt_periph.h> 53 54 #include <bus/cam/scsi/scsi_all.h> 55 #include <bus/cam/scsi/scsi_message.h> 56 57 static TW_VOID twa_action(struct cam_sim *sim, union ccb *ccb); 58 static TW_VOID twa_poll(struct cam_sim *sim); 59 static TW_VOID twa_bus_scan_cb(struct cam_periph *periph, union ccb *ccb); 60 61 static TW_INT32 tw_osli_execute_scsi(struct tw_osli_req_context *req, 62 union ccb *ccb); 63 64 65 66 /* 67 * Function name: tw_osli_cam_attach 68 * Description: Attaches the driver to CAM. 69 * 70 * Input: sc -- ptr to OSL internal ctlr context 71 * Output: None 72 * Return value: 0 -- success 73 * non-zero-- failure 74 */ 75 TW_INT32 76 tw_osli_cam_attach(struct twa_softc *sc) 77 { 78 struct cam_devq *devq; 79 TW_INT32 error; 80 81 tw_osli_dbg_dprintf(3, sc, "entered"); 82 83 /* 84 * Create the device queue for our SIM. 85 */ 86 if ((devq = cam_simq_alloc(TW_OSLI_MAX_NUM_IOS)) == NULL) { 87 tw_osli_printf(sc, "error = %d", 88 TW_CL_SEVERITY_ERROR_STRING, 89 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 90 0x2100, 91 "Failed to create SIM device queue", 92 ENOMEM); 93 return(ENOMEM); 94 } 95 96 /* 97 * Create a SIM entry. Though we can support TW_OSLI_MAX_NUM_REQUESTS 98 * simultaneous requests, we claim to be able to handle only 99 * TW_OSLI_MAX_NUM_IOS (two less), so that we always have a request 100 * packet available to service ioctls and AENs. 101 */ 102 tw_osli_dbg_dprintf(3, sc, "Calling cam_sim_alloc"); 103 sc->sim = cam_sim_alloc(twa_action, twa_poll, "twa", sc, 104 device_get_unit(sc->bus_dev), sc->sim_lock, 105 TW_OSLI_MAX_NUM_IOS, 1, devq); 106 cam_simq_release(devq); 107 if (sc->sim == NULL) { 108 tw_osli_printf(sc, "error = %d", 109 TW_CL_SEVERITY_ERROR_STRING, 110 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 111 0x2101, 112 "Failed to create a SIM entry", 113 ENOMEM); 114 return(ENOMEM); 115 } 116 117 /* 118 * Register the bus. 119 */ 120 tw_osli_dbg_dprintf(3, sc, "Calling xpt_bus_register"); 121 lockmgr(sc->sim_lock, LK_EXCLUSIVE); 122 if (xpt_bus_register(sc->sim, 0) != CAM_SUCCESS) { 123 cam_sim_free(sc->sim); 124 sc->sim = NULL; /* so cam_detach will not try to free it */ 125 tw_osli_printf(sc, "error = %d", 126 TW_CL_SEVERITY_ERROR_STRING, 127 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 128 0x2102, 129 "Failed to register the bus", 130 ENXIO); 131 lockmgr(sc->sim_lock, LK_RELEASE); 132 return(ENXIO); 133 } 134 135 tw_osli_dbg_dprintf(3, sc, "Calling xpt_create_path"); 136 if (xpt_create_path(&sc->path, NULL, 137 cam_sim_path(sc->sim), 138 CAM_TARGET_WILDCARD, 139 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 140 xpt_bus_deregister(cam_sim_path (sc->sim)); 141 cam_sim_free(sc->sim); 142 sc->sim = NULL; /* so cam_detach will not try to free it */ 143 tw_osli_printf(sc, "error = %d", 144 TW_CL_SEVERITY_ERROR_STRING, 145 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 146 0x2103, 147 "Failed to create path", 148 ENXIO); 149 lockmgr(sc->sim_lock, LK_RELEASE); 150 return(ENXIO); 151 } 152 lockmgr(sc->sim_lock, LK_RELEASE); 153 154 tw_osli_dbg_dprintf(3, sc, "Calling tw_osli_request_bus_scan"); 155 /* 156 * Request a bus scan, so that CAM gets to know of 157 * the logical units that we control. 158 */ 159 if ((error = tw_osli_request_bus_scan(sc))) 160 tw_osli_printf(sc, "error = %d", 161 TW_CL_SEVERITY_ERROR_STRING, 162 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 163 0x2104, 164 "Bus scan request to CAM failed", 165 error); 166 167 tw_osli_dbg_dprintf(3, sc, "exiting"); 168 return(0); 169 } 170 171 172 173 /* 174 * Function name: tw_osli_cam_detach 175 * Description: Detaches the driver from CAM. 176 * 177 * Input: sc -- ptr to OSL internal ctlr context 178 * Output: None 179 * Return value: None 180 */ 181 TW_VOID 182 tw_osli_cam_detach(struct twa_softc *sc) 183 { 184 tw_osli_dbg_dprintf(3, sc, "entered"); 185 186 lockmgr(sc->sim_lock, LK_EXCLUSIVE); 187 188 if (sc->path) 189 xpt_free_path(sc->path); 190 if (sc->sim) { 191 xpt_bus_deregister(cam_sim_path(sc->sim)); 192 /* Passing TRUE to cam_sim_free will free the devq as well. */ 193 cam_sim_free(sc->sim); 194 } 195 /* It's ok have 1 hold count while destroying the mutex */ 196 lockuninit(sc->sim_lock); 197 } 198 199 200 201 /* 202 * Function name: tw_osli_execute_scsi 203 * Description: Build a fw cmd, based on a CAM style ccb, and 204 * send it down. 205 * 206 * Input: req -- ptr to OSL internal request context 207 * ccb -- ptr to CAM style ccb 208 * Output: None 209 * Return value: 0 -- success 210 * non-zero-- failure 211 */ 212 static TW_INT32 213 tw_osli_execute_scsi(struct tw_osli_req_context *req, union ccb *ccb) 214 { 215 struct twa_softc *sc = req->ctlr; 216 struct tw_cl_req_packet *req_pkt; 217 struct tw_cl_scsi_req_packet *scsi_req; 218 struct ccb_hdr *ccb_h = &(ccb->ccb_h); 219 struct ccb_scsiio *csio = &(ccb->csio); 220 TW_INT32 error; 221 222 tw_osli_dbg_dprintf(10, sc, "SCSI I/O request 0x%x", 223 csio->cdb_io.cdb_bytes[0]); 224 225 if (ccb_h->target_id >= TW_CL_MAX_NUM_UNITS) { 226 tw_osli_dbg_dprintf(3, sc, "Invalid target. PTL = %x %x %jx", 227 ccb_h->path_id, ccb_h->target_id, 228 (uintmax_t)ccb_h->target_lun); 229 ccb_h->status |= CAM_TID_INVALID; 230 xpt_done(ccb); 231 return(1); 232 } 233 if (ccb_h->target_lun >= TW_CL_MAX_NUM_LUNS) { 234 tw_osli_dbg_dprintf(3, sc, "Invalid lun. PTL = %x %x %jx", 235 ccb_h->path_id, ccb_h->target_id, 236 (uintmax_t)ccb_h->target_lun); 237 ccb_h->status |= CAM_LUN_INVALID; 238 xpt_done(ccb); 239 return(1); 240 } 241 242 if(ccb_h->flags & CAM_CDB_PHYS) { 243 tw_osli_printf(sc, "", 244 TW_CL_SEVERITY_ERROR_STRING, 245 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 246 0x2105, 247 "Physical CDB address!"); 248 ccb_h->status = CAM_REQ_INVALID; 249 xpt_done(ccb); 250 return(1); 251 } 252 253 /* 254 * We are going to work on this request. Mark it as enqueued (though 255 * we don't actually queue it...) 256 */ 257 ccb_h->status |= CAM_SIM_QUEUED; 258 259 if((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 260 if(ccb_h->flags & CAM_DIR_IN) 261 req->flags |= TW_OSLI_REQ_FLAGS_DATA_IN; 262 else 263 req->flags |= TW_OSLI_REQ_FLAGS_DATA_OUT; 264 } 265 266 /* Build the CL understood request packet for SCSI cmds. */ 267 req_pkt = &req->req_pkt; 268 req_pkt->status = 0; 269 req_pkt->tw_osl_callback = tw_osl_complete_io; 270 scsi_req = &(req_pkt->gen_req_pkt.scsi_req); 271 scsi_req->unit = ccb_h->target_id; 272 scsi_req->lun = ccb_h->target_lun; 273 scsi_req->sense_len = 0; 274 scsi_req->sense_data = (TW_UINT8 *)(&csio->sense_data); 275 scsi_req->scsi_status = 0; 276 if(ccb_h->flags & CAM_CDB_POINTER) 277 scsi_req->cdb = csio->cdb_io.cdb_ptr; 278 else 279 scsi_req->cdb = csio->cdb_io.cdb_bytes; 280 scsi_req->cdb_len = csio->cdb_len; 281 282 if (!(ccb_h->flags & CAM_DATA_PHYS)) { 283 /* Virtual data addresses. Need to convert them... */ 284 tw_osli_dbg_dprintf(3, sc, 285 "XPT_SCSI_IO: Single virtual address!"); 286 if (!(ccb_h->flags & CAM_SCATTER_VALID)) { 287 if (csio->dxfer_len > TW_CL_MAX_IO_SIZE) { 288 tw_osli_printf(sc, "size = %d", 289 TW_CL_SEVERITY_ERROR_STRING, 290 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 291 0x2106, 292 "I/O size too big", 293 csio->dxfer_len); 294 ccb_h->status = CAM_REQ_TOO_BIG; 295 ccb_h->status &= ~CAM_SIM_QUEUED; 296 xpt_done(ccb); 297 return(1); 298 } 299 300 if ((req->length = csio->dxfer_len)) { 301 req->data = csio->data_ptr; 302 scsi_req->sgl_entries = 1; 303 } 304 } else { 305 tw_osli_printf(sc, "", 306 TW_CL_SEVERITY_ERROR_STRING, 307 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 308 0x2107, 309 "XPT_SCSI_IO: Got SGList"); 310 ccb_h->status = CAM_REQ_INVALID; 311 ccb_h->status &= ~CAM_SIM_QUEUED; 312 xpt_done(ccb); 313 return(1); 314 } 315 } else { 316 /* Data addresses are physical. */ 317 tw_osli_printf(sc, "", 318 TW_CL_SEVERITY_ERROR_STRING, 319 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 320 0x2108, 321 "XPT_SCSI_IO: Physical data addresses"); 322 ccb_h->status = CAM_REQ_INVALID; 323 ccb_h->status &= ~CAM_SIM_QUEUED; 324 xpt_done(ccb); 325 return(1); 326 } 327 328 req->deadline = tw_osl_get_local_time() + (ccb_h->timeout / 1000); 329 330 331 /* 332 * twa_map_load_data_callback will fill in the SGL, 333 * and submit the I/O. 334 */ 335 error = tw_osli_map_request(req); 336 if ((error) && (req->flags & TW_OSLI_REQ_FLAGS_FAILED)) { 337 req->deadline = 0; 338 ccb_h->status = CAM_REQ_CMP_ERR; 339 ccb_h->status &= ~CAM_SIM_QUEUED; 340 xpt_done(ccb); 341 } 342 return(error); 343 } 344 345 346 347 /* 348 * Function name: twa_action 349 * Description: Driver entry point for CAM's use. 350 * 351 * Input: sim -- sim corresponding to the ctlr 352 * ccb -- ptr to CAM request 353 * Output: None 354 * Return value: None 355 */ 356 static TW_VOID 357 twa_action(struct cam_sim *sim, union ccb *ccb) 358 { 359 struct twa_softc *sc = (struct twa_softc *)cam_sim_softc(sim); 360 struct ccb_hdr *ccb_h = &(ccb->ccb_h); 361 362 switch (ccb_h->func_code) { 363 case XPT_SCSI_IO: /* SCSI I/O */ 364 { 365 struct tw_osli_req_context *req; 366 367 req = tw_osli_get_request(sc); 368 if (req == NULL) { 369 tw_osli_dbg_dprintf(2, sc, "Cannot get request pkt."); 370 /* 371 * Freeze the simq to maintain ccb ordering. The next 372 * ccb that gets completed will unfreeze the simq. 373 */ 374 ccb_h->status &= ~CAM_SIM_QUEUED; 375 ccb_h->status |= CAM_REQUEUE_REQ; 376 xpt_done(ccb); 377 break; 378 } 379 380 if ((tw_cl_is_reset_needed(&(req->ctlr->ctlr_handle)))) { 381 ccb_h->status &= ~CAM_SIM_QUEUED; 382 ccb_h->status |= CAM_REQUEUE_REQ; 383 xpt_done(ccb); 384 tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); 385 break; 386 } 387 388 req->req_handle.osl_req_ctxt = req; 389 req->req_handle.is_io = TW_CL_TRUE; 390 req->orig_req = ccb; 391 if (tw_osli_execute_scsi(req, ccb)) 392 tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); 393 break; 394 } 395 396 case XPT_ABORT: 397 tw_osli_dbg_dprintf(2, sc, "Abort request."); 398 ccb_h->status = CAM_UA_ABORT; 399 xpt_done(ccb); 400 break; 401 402 case XPT_RESET_BUS: 403 tw_cl_create_event(&(sc->ctlr_handle), TW_CL_FALSE, 404 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 405 0x2108, 0x3, TW_CL_SEVERITY_INFO_STRING, 406 "Received Reset Bus request from CAM", 407 " "); 408 409 tw_cl_set_reset_needed(&(sc->ctlr_handle)); 410 ccb_h->status = CAM_REQ_CMP; 411 xpt_done(ccb); 412 break; 413 414 case XPT_SET_TRAN_SETTINGS: 415 tw_osli_dbg_dprintf(3, sc, "XPT_SET_TRAN_SETTINGS"); 416 417 /* 418 * This command is not supported, since it's very specific 419 * to SCSI, and we are doing ATA. 420 */ 421 ccb_h->status = CAM_FUNC_NOTAVAIL; 422 xpt_done(ccb); 423 break; 424 425 case XPT_GET_TRAN_SETTINGS: 426 { 427 struct ccb_trans_settings *cts = &ccb->cts; 428 struct ccb_trans_settings_scsi *scsi = 429 &cts->proto_specific.scsi; 430 struct ccb_trans_settings_spi *spi = 431 &cts->xport_specific.spi; 432 433 cts->protocol = PROTO_SCSI; 434 cts->protocol_version = SCSI_REV_2; 435 cts->transport = XPORT_SPI; 436 cts->transport_version = 2; 437 438 spi->valid = CTS_SPI_VALID_DISC; 439 spi->flags = CTS_SPI_FLAGS_DISC_ENB; 440 scsi->valid = CTS_SCSI_VALID_TQ; 441 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 442 tw_osli_dbg_dprintf(3, sc, "XPT_GET_TRAN_SETTINGS"); 443 ccb_h->status = CAM_REQ_CMP; 444 xpt_done(ccb); 445 break; 446 } 447 448 case XPT_CALC_GEOMETRY: 449 tw_osli_dbg_dprintf(3, sc, "XPT_CALC_GEOMETRY"); 450 cam_calc_geometry(&ccb->ccg, 1/* extended */); 451 xpt_done(ccb); 452 break; 453 454 case XPT_PATH_INQ: /* Path inquiry -- get twa properties */ 455 { 456 struct ccb_pathinq *path_inq = &ccb->cpi; 457 458 tw_osli_dbg_dprintf(3, sc, "XPT_PATH_INQ request"); 459 460 path_inq->version_num = 1; 461 path_inq->hba_inquiry = 0; 462 path_inq->target_sprt = 0; 463 path_inq->hba_misc = 0; 464 path_inq->hba_eng_cnt = 0; 465 path_inq->max_target = TW_CL_MAX_NUM_UNITS; 466 path_inq->max_lun = TW_CL_MAX_NUM_LUNS - 1; 467 path_inq->unit_number = cam_sim_unit(sim); 468 path_inq->bus_id = cam_sim_bus(sim); 469 path_inq->initiator_id = TW_CL_MAX_NUM_UNITS; 470 path_inq->base_transfer_speed = 100000; 471 strncpy(path_inq->sim_vid, "FreeBSD", SIM_IDLEN); 472 strncpy(path_inq->hba_vid, "3ware", HBA_IDLEN); 473 strncpy(path_inq->dev_name, cam_sim_name(sim), DEV_IDLEN); 474 path_inq->transport = XPORT_SPI; 475 path_inq->transport_version = 2; 476 path_inq->protocol = PROTO_SCSI; 477 path_inq->protocol_version = SCSI_REV_2; 478 #if 0 /* XXX swildner */ 479 path_inq->maxio = TW_CL_MAX_IO_SIZE; 480 #endif 481 ccb_h->status = CAM_REQ_CMP; 482 xpt_done(ccb); 483 break; 484 } 485 486 default: 487 tw_osli_dbg_dprintf(3, sc, "func_code = %x", ccb_h->func_code); 488 ccb_h->status = CAM_REQ_INVALID; 489 xpt_done(ccb); 490 break; 491 } 492 } 493 494 495 496 /* 497 * Function name: twa_poll 498 * Description: Driver entry point called when interrupts are not 499 * available. 500 * 501 * Input: sim -- sim corresponding to the controller 502 * Output: None 503 * Return value: None 504 */ 505 static TW_VOID 506 twa_poll(struct cam_sim *sim) 507 { 508 struct twa_softc *sc = (struct twa_softc *)(cam_sim_softc(sim)); 509 510 tw_osli_dbg_dprintf(3, sc, "entering; sc = %p", sc); 511 tw_cl_interrupt(&(sc->ctlr_handle)); 512 tw_osli_dbg_dprintf(3, sc, "exiting; sc = %p", sc); 513 } 514 515 516 517 /* 518 * Function name: tw_osli_request_bus_scan 519 * Description: Requests CAM for a scan of the bus. 520 * 521 * Input: sc -- ptr to per ctlr structure 522 * Output: None 523 * Return value: 0 -- success 524 * non-zero-- failure 525 */ 526 TW_INT32 527 tw_osli_request_bus_scan(struct twa_softc *sc) 528 { 529 union ccb *ccb; 530 531 tw_osli_dbg_dprintf(3, sc, "entering"); 532 533 /* If we get here before sc->sim is initialized, return an error. */ 534 if (!(sc->sim)) 535 return(ENXIO); 536 if ((ccb = xpt_alloc_ccb()) == NULL) 537 return(ENOMEM); 538 lockmgr(sc->sim_lock, LK_EXCLUSIVE); 539 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph, cam_sim_path(sc->sim), 540 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 541 xpt_free_ccb(ccb); 542 lockmgr(sc->sim_lock, LK_RELEASE); 543 return(EIO); 544 } 545 546 xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path, 5/*priority (low)*/); 547 ccb->ccb_h.func_code = XPT_SCAN_BUS; 548 ccb->ccb_h.cbfcnp = twa_bus_scan_cb; 549 ccb->crcn.flags = CAM_FLAG_NONE; 550 xpt_action(ccb); 551 552 lockmgr(sc->sim_lock, LK_RELEASE); 553 return(0); 554 } 555 556 557 558 /* 559 * Function name: twa_bus_scan_cb 560 * Description: Callback from CAM on a bus scan request. 561 * 562 * Input: periph -- we don't use this 563 * ccb -- bus scan request ccb that we sent to CAM 564 * Output: None 565 * Return value: None 566 */ 567 static TW_VOID 568 twa_bus_scan_cb(struct cam_periph *periph, union ccb *ccb) 569 { 570 tw_osli_dbg_printf(3, "entering"); 571 572 if (ccb->ccb_h.status != CAM_REQ_CMP) 573 kprintf("cam_scan_callback: failure status = %x\n", 574 ccb->ccb_h.status); 575 else 576 tw_osli_dbg_printf(3, "success"); 577 578 xpt_free_path(ccb->ccb_h.path); 579 kfree(ccb, M_TEMP); 580 } 581 582 583 584 /* 585 * Function name: tw_osli_disallow_new_requests 586 * Description: Calls the appropriate CAM function, so as to freeze 587 * the flow of new requests from CAM to this controller. 588 * 589 * Input: sc -- ptr to OSL internal ctlr context 590 * req_handle -- ptr to request handle sent by OSL. 591 * Output: None 592 * Return value: None 593 */ 594 TW_VOID 595 tw_osli_disallow_new_requests(struct twa_softc *sc, 596 struct tw_cl_req_handle *req_handle) 597 { 598 /* Only freeze/release the simq for IOs */ 599 if (req_handle->is_io) { 600 struct tw_osli_req_context *req = req_handle->osl_req_ctxt; 601 union ccb *ccb = (union ccb *)(req->orig_req); 602 603 xpt_freeze_simq(sc->sim, 1); 604 ccb->ccb_h.status |= CAM_RELEASE_SIMQ; 605 } 606 } 607 608 609 610 /* 611 * Function name: tw_osl_timeout 612 * Description: Call to timeout(). 613 * 614 * Input: req_handle -- ptr to request handle sent by OSL. 615 * Output: None 616 * Return value: None 617 */ 618 TW_VOID 619 tw_osl_timeout(struct tw_cl_req_handle *req_handle) 620 { 621 struct tw_osli_req_context *req = req_handle->osl_req_ctxt; 622 union ccb *ccb = (union ccb *)(req->orig_req); 623 struct ccb_hdr *ccb_h = &(ccb->ccb_h); 624 625 req->deadline = tw_osl_get_local_time() + (ccb_h->timeout / 1000); 626 } 627 628 629 630 /* 631 * Function name: tw_osl_untimeout 632 * Description: Inverse of call to timeout(). 633 * 634 * Input: req_handle -- ptr to request handle sent by OSL. 635 * Output: None 636 * Return value: None 637 */ 638 TW_VOID 639 tw_osl_untimeout(struct tw_cl_req_handle *req_handle) 640 { 641 struct tw_osli_req_context *req = req_handle->osl_req_ctxt; 642 643 req->deadline = 0; 644 } 645 646 647 648 /* 649 * Function name: tw_osl_scan_bus 650 * Description: CL calls this function to request for a bus scan. 651 * 652 * Input: ctlr_handle -- ptr to controller handle 653 * Output: None 654 * Return value: None 655 */ 656 TW_VOID 657 tw_osl_scan_bus(struct tw_cl_ctlr_handle *ctlr_handle) 658 { 659 struct twa_softc *sc = ctlr_handle->osl_ctlr_ctxt; 660 TW_INT32 error; 661 662 if ((error = tw_osli_request_bus_scan(sc))) 663 tw_osli_printf(sc, "error = %d", 664 TW_CL_SEVERITY_ERROR_STRING, 665 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 666 0x2109, 667 "Bus scan request to CAM failed", 668 error); 669 } 670 671 672 673 /* 674 * Function name: tw_osl_complete_io 675 * Description: Called to complete CAM scsi requests. 676 * 677 * Input: req_handle -- ptr to request handle 678 * Output: None 679 * Return value: None 680 */ 681 TW_VOID 682 tw_osl_complete_io(struct tw_cl_req_handle *req_handle) 683 { 684 struct tw_osli_req_context *req = req_handle->osl_req_ctxt; 685 struct tw_cl_req_packet *req_pkt = 686 (struct tw_cl_req_packet *)(&req->req_pkt); 687 struct tw_cl_scsi_req_packet *scsi_req; 688 struct twa_softc *sc = req->ctlr; 689 union ccb *ccb = (union ccb *)(req->orig_req); 690 691 tw_osli_dbg_dprintf(10, sc, "entering"); 692 693 if (req->state != TW_OSLI_REQ_STATE_BUSY) 694 tw_osli_printf(sc, "request = %p, status = %d", 695 TW_CL_SEVERITY_ERROR_STRING, 696 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 697 0x210A, 698 "Unposted command completed!!", 699 req, req->state); 700 701 /* 702 * Remove request from the busy queue. Just mark it complete. 703 * There's no need to move it into the complete queue as we are 704 * going to be done with it right now. 705 */ 706 req->state = TW_OSLI_REQ_STATE_COMPLETE; 707 tw_osli_req_q_remove_item(req, TW_OSLI_BUSY_Q); 708 709 tw_osli_unmap_request(req); 710 711 req->deadline = 0; 712 if (req->error_code) { 713 /* This request never got submitted to the firmware. */ 714 if (req->error_code == EBUSY) { 715 /* 716 * Cmd queue is full, or the Common Layer is out of 717 * resources. The simq will already have been frozen. 718 * When this ccb gets completed will unfreeze the simq. 719 */ 720 ccb->ccb_h.status |= CAM_REQUEUE_REQ; 721 } 722 else if (req->error_code == EFBIG) 723 ccb->ccb_h.status = CAM_REQ_TOO_BIG; 724 else 725 ccb->ccb_h.status = CAM_REQ_CMP_ERR; 726 } else { 727 scsi_req = &(req_pkt->gen_req_pkt.scsi_req); 728 if (req_pkt->status == TW_CL_ERR_REQ_SUCCESS) 729 ccb->ccb_h.status = CAM_REQ_CMP; 730 else { 731 if (req_pkt->status & TW_CL_ERR_REQ_INVALID_TARGET) 732 ccb->ccb_h.status |= CAM_SEL_TIMEOUT; 733 else if (req_pkt->status & TW_CL_ERR_REQ_INVALID_LUN) 734 ccb->ccb_h.status |= CAM_DEV_NOT_THERE; 735 else if (req_pkt->status & TW_CL_ERR_REQ_SCSI_ERROR) 736 ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR; 737 else if (req_pkt->status & TW_CL_ERR_REQ_BUS_RESET) 738 ccb->ccb_h.status |= (CAM_REQUEUE_REQ | CAM_SCSI_BUS_RESET); 739 /* 740 * If none of the above errors occurred, simply 741 * mark completion error. 742 */ 743 if (ccb->ccb_h.status == 0) 744 ccb->ccb_h.status = CAM_REQ_CMP_ERR; 745 746 if (req_pkt->status & TW_CL_ERR_REQ_AUTO_SENSE_VALID) { 747 ccb->csio.sense_len = scsi_req->sense_len; 748 ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 749 } 750 } 751 752 ccb->csio.scsi_status = scsi_req->scsi_status; 753 } 754 755 ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 756 lockmgr(sc->sim_lock, LK_EXCLUSIVE); 757 xpt_done(ccb); 758 lockmgr(sc->sim_lock, LK_RELEASE); 759 if (! req->error_code) 760 /* twa_action will free the request otherwise */ 761 tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); 762 } 763