1 /*- 2 * Copyright (c) 2002 Adaptec, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: src/sys/dev/aac/aac_cam.c,v 1.2.2.4 2003/04/08 13:22:08 scottl Exp $ 27 * $DragonFly: src/sys/dev/raid/aac/aac_cam.c,v 1.10 2008/05/18 20:30:23 pavalos Exp $ 28 */ 29 30 /* 31 * CAM front-end for communicating with non-DASD devices 32 */ 33 34 #include "opt_aac.h" 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/kernel.h> 39 #include <sys/sysctl.h> 40 #include <sys/malloc.h> 41 #include <sys/module.h> 42 43 #include <bus/cam/cam.h> 44 #include <bus/cam/cam_ccb.h> 45 #include <bus/cam/cam_debug.h> 46 #include <bus/cam/cam_sim.h> 47 #include <bus/cam/cam_xpt_sim.h> 48 #include <bus/cam/scsi/scsi_all.h> 49 #include <bus/cam/scsi/scsi_message.h> 50 51 #include <sys/bus.h> 52 #include <sys/conf.h> 53 #include <sys/devicestat.h> 54 #include <sys/disk.h> 55 #include <sys/rman.h> 56 57 #include <machine/md_var.h> 58 59 #include <vm/vm.h> 60 #include <vm/pmap.h> 61 62 #include "aacreg.h" 63 #include "aac_ioctl.h" 64 #include "aacvar.h" 65 66 struct aac_cam { 67 device_t dev; 68 struct aac_sim *inf; 69 struct cam_sim *sim; 70 struct cam_path *path; 71 }; 72 73 static int aac_cam_probe(device_t dev); 74 static int aac_cam_attach(device_t dev); 75 static int aac_cam_detach(device_t dev); 76 static void aac_cam_action(struct cam_sim *, union ccb *); 77 static void aac_cam_poll(struct cam_sim *); 78 static void aac_cam_complete(struct aac_command *); 79 static u_int32_t aac_cam_reset_bus(struct cam_sim *, union ccb *); 80 static u_int32_t aac_cam_abort_ccb(struct cam_sim *, union ccb *); 81 static u_int32_t aac_cam_term_io(struct cam_sim *, union ccb *); 82 83 static devclass_t aac_pass_devclass; 84 85 static device_method_t aac_pass_methods[] = { 86 DEVMETHOD(device_probe, aac_cam_probe), 87 DEVMETHOD(device_attach, aac_cam_attach), 88 DEVMETHOD(device_detach, aac_cam_detach), 89 { 0, 0 } 90 }; 91 92 static driver_t aac_pass_driver = { 93 "aacp", 94 aac_pass_methods, 95 sizeof(struct aac_cam) 96 }; 97 98 DRIVER_MODULE(aacp, aac, aac_pass_driver, aac_pass_devclass, 0, 0); 99 MODULE_DEPEND(aacp, cam, 1, 1, 1); 100 101 MALLOC_DEFINE(M_AACCAM, "aaccam", "AAC CAM info"); 102 103 static void 104 aac_cam_event(struct aac_softc *sc, struct aac_event *event, void *arg) 105 { 106 struct aac_cam *camsc; 107 108 switch (event->ev_type) { 109 case AAC_EVENT_CMFREE: 110 camsc = arg; 111 kfree(event, M_AACCAM); 112 xpt_release_simq(camsc->sim, 1); 113 break; 114 default: 115 device_printf(sc->aac_dev, "unknown event %d in aac_cam\n", 116 event->ev_type); 117 break; 118 } 119 120 return; 121 } 122 123 static int 124 aac_cam_probe(device_t dev) 125 { 126 debug_called(2); 127 128 return (0); 129 } 130 131 static int 132 aac_cam_detach(device_t dev) 133 { 134 struct aac_cam *camsc; 135 debug_called(2); 136 137 camsc = (struct aac_cam *)device_get_softc(dev); 138 139 get_mplock(); 140 141 xpt_async(AC_LOST_DEVICE, camsc->path, NULL); 142 xpt_free_path(camsc->path); 143 xpt_bus_deregister(cam_sim_path(camsc->sim)); 144 cam_sim_free(camsc->sim); 145 146 rel_mplock(); 147 148 return (0); 149 } 150 151 /* 152 * Register the driver as a CAM SIM 153 */ 154 static int 155 aac_cam_attach(device_t dev) 156 { 157 struct cam_devq *devq; 158 struct cam_sim *sim; 159 struct cam_path *path; 160 struct aac_cam *camsc; 161 struct aac_sim *inf; 162 163 debug_called(1); 164 165 camsc = (struct aac_cam *)device_get_softc(dev); 166 inf = (struct aac_sim *)device_get_ivars(dev); 167 camsc->inf = inf; 168 169 devq = cam_simq_alloc(inf->TargetsPerBus); 170 if (devq == NULL) 171 return (EIO); 172 173 sim = cam_sim_alloc(aac_cam_action, aac_cam_poll, "aacp", camsc, 174 device_get_unit(dev), &sim_mplock, 1, 1, devq); 175 cam_simq_release(devq); 176 if (sim == NULL) { 177 return (EIO); 178 } 179 180 /* Since every bus has it's own sim, every bus 'appears' as bus 0 */ 181 if (xpt_bus_register(sim, 0) != CAM_SUCCESS) { 182 cam_sim_free(sim); 183 return (EIO); 184 } 185 186 if (xpt_create_path(&path, NULL, cam_sim_path(sim), 187 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 188 xpt_bus_deregister(cam_sim_path(sim)); 189 cam_sim_free(sim); 190 return (EIO); 191 } 192 193 camsc->sim = sim; 194 camsc->path = path; 195 196 return (0); 197 } 198 199 static void 200 aac_cam_action(struct cam_sim *sim, union ccb *ccb) 201 { 202 struct aac_cam *camsc; 203 struct aac_softc *sc; 204 struct aac_srb32 *srb; 205 struct aac_fib *fib; 206 struct aac_command *cm; 207 208 debug_called(2); 209 210 camsc = (struct aac_cam *)cam_sim_softc(sim); 211 sc = camsc->inf->aac_sc; 212 213 /* Synchronous ops, and ops that don't require communication with the 214 * controller */ 215 switch(ccb->ccb_h.func_code) { 216 case XPT_SCSI_IO: 217 case XPT_RESET_DEV: 218 /* These are handled down below */ 219 break; 220 case XPT_CALC_GEOMETRY: 221 { 222 struct ccb_calc_geometry *ccg; 223 u_int32_t size_mb; 224 u_int32_t secs_per_cylinder; 225 226 ccg = &ccb->ccg; 227 size_mb = ccg->volume_size / 228 ((1024L * 1024L) / ccg->block_size); 229 if (size_mb >= (2 * 1024)) { /* 2GB */ 230 ccg->heads = 255; 231 ccg->secs_per_track = 63; 232 } else if (size_mb >= (1 * 1024)) { /* 1GB */ 233 ccg->heads = 128; 234 ccg->secs_per_track = 32; 235 } else { 236 ccg->heads = 64; 237 ccg->secs_per_track = 32; 238 } 239 secs_per_cylinder = ccg->heads * ccg->secs_per_track; 240 ccg->cylinders = ccg->volume_size / secs_per_cylinder; 241 242 ccb->ccb_h.status = CAM_REQ_CMP; 243 xpt_done(ccb); 244 return; 245 } 246 case XPT_PATH_INQ: 247 { 248 struct ccb_pathinq *cpi = &ccb->cpi; 249 250 cpi->version_num = 1; 251 cpi->hba_inquiry = PI_WIDE_16; 252 cpi->target_sprt = 0; 253 254 /* Resetting via the passthrough causes problems. */ 255 cpi->hba_misc = PIM_NOBUSRESET; 256 cpi->hba_eng_cnt = 0; 257 cpi->max_target = camsc->inf->TargetsPerBus; 258 cpi->max_lun = 8; /* Per the controller spec */ 259 cpi->initiator_id = camsc->inf->InitiatorBusId; 260 cpi->bus_id = camsc->inf->BusNumber; 261 cpi->base_transfer_speed = 3300; 262 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 263 strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN); 264 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 265 cpi->unit_number = cam_sim_unit(sim); 266 cpi->transport = XPORT_SPI; 267 cpi->transport_version = 2; 268 cpi->protocol = PROTO_SCSI; 269 cpi->protocol_version = SCSI_REV_2; 270 ccb->ccb_h.status = CAM_REQ_CMP; 271 xpt_done(ccb); 272 return; 273 } 274 case XPT_GET_TRAN_SETTINGS: 275 { 276 struct ccb_trans_settings_scsi *scsi = 277 &ccb->cts.proto_specific.scsi; 278 struct ccb_trans_settings_spi *spi = 279 &ccb->cts.xport_specific.spi; 280 ccb->cts.protocol = PROTO_SCSI; 281 ccb->cts.protocol_version = SCSI_REV_2; 282 ccb->cts.transport = XPORT_SPI; 283 ccb->cts.transport_version = 2; 284 if (ccb->ccb_h.target_lun != CAM_LUN_WILDCARD) { 285 scsi->valid = CTS_SCSI_VALID_TQ; 286 spi->valid |= CTS_SPI_VALID_DISC; 287 } else { 288 scsi->valid = 0; 289 } 290 ccb->ccb_h.status = CAM_REQ_CMP; 291 xpt_done(ccb); 292 return; 293 } 294 case XPT_SET_TRAN_SETTINGS: 295 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 296 xpt_done(ccb); 297 return; 298 case XPT_RESET_BUS: 299 if (!(sc->flags & AAC_FLAGS_CAM_NORESET)) { 300 ccb->ccb_h.status = aac_cam_reset_bus(sim, ccb); 301 } else { 302 ccb->ccb_h.status = CAM_REQ_CMP; 303 } 304 xpt_done(ccb); 305 return; 306 case XPT_ABORT: 307 ccb->ccb_h.status = aac_cam_abort_ccb(sim, ccb); 308 xpt_done(ccb); 309 return; 310 case XPT_TERM_IO: 311 ccb->ccb_h.status = aac_cam_term_io(sim, ccb); 312 xpt_done(ccb); 313 return; 314 default: 315 device_printf(sc->aac_dev, "Unsupported command 0x%x\n", 316 ccb->ccb_h.func_code); 317 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 318 xpt_done(ccb); 319 return; 320 } 321 322 /* Async ops that require communcation with the controller */ 323 324 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 325 if (aac_alloc_command(sc, &cm)) { 326 struct aac_event *event; 327 328 xpt_freeze_simq(sim, 1); 329 ccb->ccb_h.status = CAM_REQUEUE_REQ; 330 xpt_done(ccb); 331 event = kmalloc(sizeof(struct aac_event), M_AACCAM, 332 M_INTWAIT | M_ZERO); 333 event->ev_callback = aac_cam_event; 334 event->ev_arg = camsc; 335 event->ev_type = AAC_EVENT_CMFREE; 336 aac_add_event(sc, event); 337 AAC_LOCK_RELEASE(&sc->aac_io_lock); 338 return; 339 } 340 341 fib = cm->cm_fib; 342 srb = (struct aac_srb32 *)&fib->data[0]; 343 cm->cm_datalen = 0; 344 345 switch (ccb->ccb_h.flags & CAM_DIR_MASK) { 346 case CAM_DIR_IN: 347 srb->flags = AAC_SRB_FLAGS_DATA_IN; 348 cm->cm_flags |= AAC_CMD_DATAIN; 349 break; 350 case CAM_DIR_OUT: 351 srb->flags = AAC_SRB_FLAGS_DATA_OUT; 352 cm->cm_flags |= AAC_CMD_DATAOUT; 353 break; 354 case CAM_DIR_NONE: 355 srb->flags = AAC_SRB_FLAGS_NO_DATA_XFER; 356 break; 357 default: 358 srb->flags = AAC_SRB_FLAGS_UNSPECIFIED_DIRECTION; 359 cm->cm_flags |= AAC_CMD_DATAIN | AAC_CMD_DATAOUT; 360 break; 361 } 362 363 switch(ccb->ccb_h.func_code) { 364 case XPT_SCSI_IO: 365 { 366 struct ccb_scsiio *csio = &ccb->csio; 367 368 srb->function = AAC_SRB_FUNC_EXECUTE_SCSI; 369 370 /* 371 * Copy the CDB into the SRB. It's only 6-16 bytes, 372 * so a copy is not too expensive. 373 */ 374 srb->cdb_len = csio->cdb_len; 375 if (ccb->ccb_h.flags & CAM_CDB_POINTER) 376 bcopy(csio->cdb_io.cdb_ptr, (u_int8_t *)&srb->cdb[0], 377 srb->cdb_len); 378 else 379 bcopy(csio->cdb_io.cdb_bytes, (u_int8_t *)&srb->cdb[0], 380 srb->cdb_len); 381 382 /* Map the s/g list. XXX 32bit addresses only! */ 383 if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 384 if ((ccb->ccb_h.flags & CAM_SCATTER_VALID) == 0) { 385 srb->data_len = csio->dxfer_len; 386 if (ccb->ccb_h.flags & CAM_DATA_PHYS) { 387 /* 388 * XXX This isn't 64-bit clean. 389 * However, this condition is not 390 * normally used in CAM. 391 */ 392 srb->sg_map32.SgCount = 1; 393 srb->sg_map32.SgEntry[0].SgAddress = 394 (uint32_t)(uintptr_t)csio->data_ptr; 395 srb->sg_map32.SgEntry[0].SgByteCount = 396 csio->dxfer_len; 397 } else { 398 /* 399 * Arrange things so that the S/G 400 * map will get set up automagically 401 */ 402 cm->cm_data = (void *)csio->data_ptr; 403 cm->cm_datalen = csio->dxfer_len; 404 cm->cm_sgtable = &srb->sg_map32; 405 } 406 } else { 407 /* XXX Need to handle multiple s/g elements */ 408 panic("aac_cam: multiple s/g elements"); 409 } 410 } else { 411 srb->sg_map32.SgCount = 0; 412 srb->sg_map32.SgEntry[0].SgByteCount = 0; 413 srb->data_len = 0; 414 } 415 416 break; 417 } 418 case XPT_RESET_DEV: 419 if (!(sc->flags & AAC_FLAGS_CAM_NORESET)) { 420 srb->function = AAC_SRB_FUNC_RESET_DEVICE; 421 break; 422 } else { 423 ccb->ccb_h.status = CAM_REQ_CMP; 424 xpt_done(ccb); 425 AAC_LOCK_RELEASE(&sc->aac_io_lock); 426 return; 427 } 428 default: 429 break; 430 } 431 432 srb->bus = camsc->inf->BusNumber; /* Bus number relative to the card */ 433 srb->target = ccb->ccb_h.target_id; 434 srb->lun = ccb->ccb_h.target_lun; 435 srb->timeout = ccb->ccb_h.timeout; /* XXX */ 436 srb->retry_limit = 0; 437 438 cm->cm_complete = aac_cam_complete; 439 cm->cm_private = ccb; 440 cm->cm_timestamp = time_second; 441 cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE; 442 443 fib->Header.XferState = 444 AAC_FIBSTATE_HOSTOWNED | 445 AAC_FIBSTATE_INITIALISED | 446 AAC_FIBSTATE_FROMHOST | 447 AAC_FIBSTATE_REXPECTED | 448 AAC_FIBSTATE_NORM; 449 fib->Header.Command = ScsiPortCommand; 450 fib->Header.Size = sizeof(struct aac_fib_header) + 451 sizeof(struct aac_srb32); 452 453 aac_enqueue_ready(cm); 454 aac_startio(cm->cm_sc); 455 456 AAC_LOCK_RELEASE(&sc->aac_io_lock); 457 458 return; 459 } 460 461 static void 462 aac_cam_poll(struct cam_sim *sim) 463 { 464 /* 465 * Pinging the interrupt routine isn't very safe, nor is it 466 * really necessary. Do nothing. 467 */ 468 } 469 470 static void 471 aac_cam_complete(struct aac_command *cm) 472 { 473 union ccb *ccb; 474 struct aac_srb_response *srbr; 475 struct aac_softc *sc; 476 477 debug_called(2); 478 479 sc = cm->cm_sc; 480 ccb = cm->cm_private; 481 srbr = (struct aac_srb_response *)&cm->cm_fib->data[0]; 482 483 if (srbr->fib_status != 0) { 484 device_printf(sc->aac_dev, "Passthru FIB failed!\n"); 485 ccb->ccb_h.status = CAM_REQ_ABORTED; 486 } else { 487 /* 488 * The SRB error codes just happen to match the CAM error 489 * codes. How convienient! 490 */ 491 ccb->ccb_h.status = srbr->srb_status; 492 493 /* Take care of SCSI_IO ops. */ 494 if (ccb->ccb_h.func_code == XPT_SCSI_IO) { 495 u_int8_t command, device; 496 497 ccb->csio.scsi_status = srbr->scsi_status; 498 499 /* Take care of autosense */ 500 if (srbr->sense_len) { 501 int sense_len, scsi_sense_len; 502 503 scsi_sense_len = sizeof(struct scsi_sense_data); 504 bzero(&ccb->csio.sense_data, scsi_sense_len); 505 sense_len = (srbr->sense_len > 506 scsi_sense_len) ? scsi_sense_len : 507 srbr->sense_len; 508 bcopy(&srbr->sense[0], &ccb->csio.sense_data, 509 srbr->sense_len); 510 ccb->csio.sense_len = sense_len; 511 ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 512 /* scsi_sense_print(&ccb->csio); */ 513 } 514 515 /* If this is an inquiry command, fake things out */ 516 if (ccb->ccb_h.flags & CAM_CDB_POINTER) 517 command = ccb->csio.cdb_io.cdb_ptr[0]; 518 else 519 command = ccb->csio.cdb_io.cdb_bytes[0]; 520 521 if ((command == INQUIRY) && 522 (ccb->ccb_h.status == CAM_REQ_CMP)) { 523 device = ccb->csio.data_ptr[0] & 0x1f; 524 /* 525 * We want DASD and PROC devices to only be 526 * visible through the pass device. 527 */ 528 if ((device == T_DIRECT) || 529 (device == T_PROCESSOR) || 530 (sc->flags & AAC_FLAGS_CAM_PASSONLY)) 531 ccb->csio.data_ptr[0] = 532 ((device & 0xe0) | T_NODEVICE); 533 } 534 } 535 } 536 537 aac_release_command(cm); 538 xpt_done(ccb); 539 540 return; 541 } 542 543 static u_int32_t 544 aac_cam_reset_bus(struct cam_sim *sim, union ccb *ccb) 545 { 546 struct aac_fib *fib; 547 struct aac_softc *sc; 548 struct aac_cam *camsc; 549 struct aac_vmioctl *vmi; 550 struct aac_resetbus *rbc; 551 int e; 552 553 camsc = (struct aac_cam *)cam_sim_softc(sim); 554 sc = camsc->inf->aac_sc; 555 556 if (sc == NULL) { 557 kprintf("Null sc?\n"); 558 return (CAM_REQ_ABORTED); 559 } 560 561 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 562 aac_alloc_sync_fib(sc, &fib); 563 564 vmi = (struct aac_vmioctl *)&fib->data[0]; 565 bzero(vmi, sizeof(struct aac_vmioctl)); 566 567 vmi->Command = VM_Ioctl; 568 vmi->ObjType = FT_DRIVE; 569 vmi->MethId = sc->scsi_method_id; 570 vmi->ObjId = 0; 571 vmi->IoctlCmd = ResetBus; 572 573 rbc = (struct aac_resetbus *)&vmi->IoctlBuf[0]; 574 rbc->BusNumber = camsc->inf->BusNumber; 575 576 e = aac_sync_fib(sc, ContainerCommand, 0, fib, 577 sizeof(struct aac_vmioctl)); 578 if (e) { 579 device_printf(sc->aac_dev,"Error %d sending ResetBus command\n", 580 e); 581 aac_release_sync_fib(sc); 582 AAC_LOCK_RELEASE(&sc->aac_io_lock); 583 return (CAM_REQ_ABORTED); 584 } 585 586 aac_release_sync_fib(sc); 587 AAC_LOCK_RELEASE(&sc->aac_io_lock); 588 return (CAM_REQ_CMP); 589 } 590 591 static u_int32_t 592 aac_cam_abort_ccb(struct cam_sim *sim, union ccb *ccb) 593 { 594 return (CAM_UA_ABORT); 595 } 596 597 static u_int32_t 598 aac_cam_term_io(struct cam_sim *sim, union ccb *ccb) 599 { 600 return (CAM_UA_TERMIO); 601 } 602