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 27#include <sys/cdefs.h>
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28__FBSDID("$FreeBSD: head/sys/dev/aac/aac_cam.c 166025 2007-01-15 16:22:20Z scottl $");
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28__FBSDID("$FreeBSD: head/sys/dev/aac/aac_cam.c 168752 2007-04-15 08:49:19Z scottl $"); |
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 <cam/cam.h> 44#include <cam/cam_ccb.h> 45#include <cam/cam_debug.h> 46#include <cam/cam_sim.h> 47#include <cam/cam_xpt_sim.h> 48#include <cam/scsi/scsi_all.h> 49#include <cam/scsi/scsi_message.h> 50 51#include <sys/bus.h> 52#include <sys/conf.h> 53#include <sys/disk.h> 54 55#include <machine/md_var.h> 56#include <machine/bus.h> 57#include <sys/rman.h> 58 59#include <vm/vm.h> 60#include <vm/pmap.h> 61 62#include <dev/aac/aacreg.h> 63#include <sys/aac_ioctl.h> 64#include <dev/aac/aacvar.h> 65 66struct aac_cam { 67 device_t dev; 68 struct aac_sim *inf; 69 struct cam_sim *sim; 70 struct cam_path *path; 71}; 72 73static int aac_cam_probe(device_t dev); 74static int aac_cam_attach(device_t dev); 75static int aac_cam_detach(device_t dev); 76static void aac_cam_action(struct cam_sim *, union ccb *); 77static void aac_cam_poll(struct cam_sim *); 78static void aac_cam_complete(struct aac_command *); 79static u_int32_t aac_cam_reset_bus(struct cam_sim *, union ccb *); 80static u_int32_t aac_cam_abort_ccb(struct cam_sim *, union ccb *); 81static u_int32_t aac_cam_term_io(struct cam_sim *, union ccb *); 82 83static devclass_t aac_pass_devclass; 84 85static 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 92static driver_t aac_pass_driver = { 93 "aacp", 94 aac_pass_methods, 95 sizeof(struct aac_cam) 96}; 97 98DRIVER_MODULE(aacp, aac, aac_pass_driver, aac_pass_devclass, 0, 0); 99MODULE_DEPEND(aacp, cam, 1, 1, 1); 100 101MALLOC_DEFINE(M_AACCAM, "aaccam", "AAC CAM info"); 102 103static void 104aac_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 free(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 123static int 124aac_cam_probe(device_t dev) 125{ 126 debug_called(2); 127 128 return (0); 129} 130 131static int 132aac_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 mtx_lock(&Giant); 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, /*free_devq*/TRUE); 145 146 mtx_unlock(&Giant); 147 148 return (0); 149} 150 151/* 152 * Register the driver as a CAM SIM 153 */ 154static int 155aac_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,
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174 device_get_unit(dev), 1, 1, devq);
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174 device_get_unit(dev), &Giant, 1, 1, devq); |
175 if (sim == NULL) { 176 cam_simq_free(devq); 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, TRUE); 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, TRUE); 190 return (EIO); 191 } 192 193 camsc->sim = sim; 194 camsc->path = path; 195 196 return (0); 197} 198 199static void 200aac_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 mtx_lock(&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 = malloc(sizeof(struct aac_event), M_AACCAM, 332 M_NOWAIT | M_ZERO); 333 if (event == NULL) { 334 device_printf(sc->aac_dev, 335 "Warning, out of memory for event\n"); 336 /* XXX Yuck, what to do here? */ 337 mtx_unlock(&sc->aac_io_lock); 338 return; 339 } 340 event->ev_callback = aac_cam_event; 341 event->ev_arg = camsc; 342 event->ev_type = AAC_EVENT_CMFREE; 343 aac_add_event(sc, event); 344 mtx_unlock(&sc->aac_io_lock); 345 return; 346 } 347 348 fib = cm->cm_fib; 349 srb = (struct aac_srb32 *)&fib->data[0]; 350 cm->cm_datalen = 0; 351 352 switch (ccb->ccb_h.flags & CAM_DIR_MASK) { 353 case CAM_DIR_IN: 354 srb->flags = AAC_SRB_FLAGS_DATA_IN; 355 cm->cm_flags |= AAC_CMD_DATAIN; 356 break; 357 case CAM_DIR_OUT: 358 srb->flags = AAC_SRB_FLAGS_DATA_OUT; 359 cm->cm_flags |= AAC_CMD_DATAOUT; 360 break; 361 case CAM_DIR_NONE: 362 srb->flags = AAC_SRB_FLAGS_NO_DATA_XFER; 363 break; 364 default: 365 srb->flags = AAC_SRB_FLAGS_UNSPECIFIED_DIRECTION; 366 cm->cm_flags |= AAC_CMD_DATAIN | AAC_CMD_DATAOUT; 367 break; 368 } 369 370 switch(ccb->ccb_h.func_code) { 371 case XPT_SCSI_IO: 372 { 373 struct ccb_scsiio *csio = &ccb->csio; 374 375 srb->function = AAC_SRB_FUNC_EXECUTE_SCSI; 376 377 /* 378 * Copy the CDB into the SRB. It's only 6-16 bytes, 379 * so a copy is not too expensive. 380 */ 381 srb->cdb_len = csio->cdb_len; 382 if (ccb->ccb_h.flags & CAM_CDB_POINTER) 383 bcopy(csio->cdb_io.cdb_ptr, (u_int8_t *)&srb->cdb[0], 384 srb->cdb_len); 385 else 386 bcopy(csio->cdb_io.cdb_bytes, (u_int8_t *)&srb->cdb[0], 387 srb->cdb_len); 388 389 /* Map the s/g list. XXX 32bit addresses only! */ 390 if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 391 if ((ccb->ccb_h.flags & CAM_SCATTER_VALID) == 0) { 392 srb->data_len = csio->dxfer_len; 393 if (ccb->ccb_h.flags & CAM_DATA_PHYS) { 394 /* 395 * XXX This isn't 64-bit clean. 396 * However, this condition is not 397 * normally used in CAM. 398 */ 399 srb->sg_map32.SgCount = 1; 400 srb->sg_map32.SgEntry[0].SgAddress = 401 (uint32_t)(uintptr_t)csio->data_ptr; 402 srb->sg_map32.SgEntry[0].SgByteCount = 403 csio->dxfer_len; 404 } else { 405 /* 406 * Arrange things so that the S/G 407 * map will get set up automagically 408 */ 409 cm->cm_data = (void *)csio->data_ptr; 410 cm->cm_datalen = csio->dxfer_len; 411 cm->cm_sgtable = &srb->sg_map32; 412 } 413 } else { 414 /* XXX Need to handle multiple s/g elements */ 415 panic("aac_cam: multiple s/g elements"); 416 } 417 } else { 418 srb->sg_map32.SgCount = 0; 419 srb->sg_map32.SgEntry[0].SgByteCount = 0; 420 srb->data_len = 0; 421 } 422 423 break; 424 } 425 case XPT_RESET_DEV: 426 if (!(sc->flags & AAC_FLAGS_CAM_NORESET)) { 427 srb->function = AAC_SRB_FUNC_RESET_DEVICE; 428 break; 429 } else { 430 ccb->ccb_h.status = CAM_REQ_CMP; 431 xpt_done(ccb); 432 mtx_unlock(&sc->aac_io_lock); 433 return; 434 } 435 default: 436 break; 437 } 438 439 srb->bus = camsc->inf->BusNumber; /* Bus number relative to the card */ 440 srb->target = ccb->ccb_h.target_id; 441 srb->lun = ccb->ccb_h.target_lun; 442 srb->timeout = ccb->ccb_h.timeout; /* XXX */ 443 srb->retry_limit = 0; 444 445 cm->cm_complete = aac_cam_complete; 446 cm->cm_private = ccb; 447 cm->cm_timestamp = time_uptime; 448 cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE; 449 450 fib->Header.XferState = 451 AAC_FIBSTATE_HOSTOWNED | 452 AAC_FIBSTATE_INITIALISED | 453 AAC_FIBSTATE_FROMHOST | 454 AAC_FIBSTATE_REXPECTED | 455 AAC_FIBSTATE_NORM; 456 fib->Header.Command = ScsiPortCommand; 457 fib->Header.Size = sizeof(struct aac_fib_header) + 458 sizeof(struct aac_srb32); 459 460 aac_enqueue_ready(cm); 461 aac_startio(cm->cm_sc); 462 463 mtx_unlock(&sc->aac_io_lock); 464 465 return; 466} 467 468static void 469aac_cam_poll(struct cam_sim *sim) 470{ 471 /* 472 * Pinging the interrupt routine isn't very safe, nor is it 473 * really necessary. Do nothing. 474 */ 475} 476 477static void 478aac_cam_complete(struct aac_command *cm) 479{ 480 union ccb *ccb; 481 struct aac_srb_response *srbr; 482 struct aac_softc *sc; 483 484 debug_called(2); 485 486 sc = cm->cm_sc; 487 ccb = cm->cm_private; 488 srbr = (struct aac_srb_response *)&cm->cm_fib->data[0]; 489 490 if (srbr->fib_status != 0) { 491 device_printf(sc->aac_dev, "Passthru FIB failed!\n"); 492 ccb->ccb_h.status = CAM_REQ_ABORTED; 493 } else { 494 /* 495 * The SRB error codes just happen to match the CAM error 496 * codes. How convienient! 497 */ 498 ccb->ccb_h.status = srbr->srb_status; 499 500 /* Take care of SCSI_IO ops. */ 501 if (ccb->ccb_h.func_code == XPT_SCSI_IO) { 502 u_int8_t command, device; 503 504 ccb->csio.scsi_status = srbr->scsi_status; 505 506 /* Take care of autosense */ 507 if (srbr->sense_len) { 508 int sense_len, scsi_sense_len; 509 510 scsi_sense_len = sizeof(struct scsi_sense_data); 511 bzero(&ccb->csio.sense_data, scsi_sense_len); 512 sense_len = (srbr->sense_len > 513 scsi_sense_len) ? scsi_sense_len : 514 srbr->sense_len; 515 bcopy(&srbr->sense[0], &ccb->csio.sense_data, 516 srbr->sense_len); 517 ccb->csio.sense_len = sense_len; 518 ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 519 // scsi_sense_print(&ccb->csio); 520 } 521 522 /* If this is an inquiry command, fake things out */ 523 if (ccb->ccb_h.flags & CAM_CDB_POINTER) 524 command = ccb->csio.cdb_io.cdb_ptr[0]; 525 else 526 command = ccb->csio.cdb_io.cdb_bytes[0]; 527 528 if ((command == INQUIRY) && 529 (ccb->ccb_h.status == CAM_REQ_CMP)) { 530 device = ccb->csio.data_ptr[0] & 0x1f; 531 /* 532 * We want DASD and PROC devices to only be 533 * visible through the pass device. 534 */ 535 if ((device == T_DIRECT) || 536 (device == T_PROCESSOR) || 537 (sc->flags & AAC_FLAGS_CAM_PASSONLY)) 538 ccb->csio.data_ptr[0] = 539 ((device & 0xe0) | T_NODEVICE); 540 } 541 } 542 } 543 544 aac_release_command(cm); 545 xpt_done(ccb); 546 547 return; 548} 549 550static u_int32_t 551aac_cam_reset_bus(struct cam_sim *sim, union ccb *ccb) 552{ 553 struct aac_fib *fib; 554 struct aac_softc *sc; 555 struct aac_cam *camsc; 556 struct aac_vmioctl *vmi; 557 struct aac_resetbus *rbc; 558 int e; 559 560 camsc = (struct aac_cam *)cam_sim_softc(sim); 561 sc = camsc->inf->aac_sc; 562 563 if (sc == NULL) { 564 printf("Null sc?\n"); 565 return (CAM_REQ_ABORTED); 566 } 567 568 mtx_lock(&sc->aac_io_lock); 569 aac_alloc_sync_fib(sc, &fib); 570 571 vmi = (struct aac_vmioctl *)&fib->data[0]; 572 bzero(vmi, sizeof(struct aac_vmioctl)); 573 574 vmi->Command = VM_Ioctl; 575 vmi->ObjType = FT_DRIVE; 576 vmi->MethId = sc->scsi_method_id; 577 vmi->ObjId = 0; 578 vmi->IoctlCmd = ResetBus; 579 580 rbc = (struct aac_resetbus *)&vmi->IoctlBuf[0]; 581 rbc->BusNumber = camsc->inf->BusNumber; 582 583 e = aac_sync_fib(sc, ContainerCommand, 0, fib, 584 sizeof(struct aac_vmioctl)); 585 if (e) { 586 device_printf(sc->aac_dev,"Error %d sending ResetBus command\n", 587 e); 588 aac_release_sync_fib(sc); 589 mtx_unlock(&sc->aac_io_lock); 590 return (CAM_REQ_ABORTED); 591 } 592 593 aac_release_sync_fib(sc); 594 mtx_unlock(&sc->aac_io_lock); 595 return (CAM_REQ_CMP); 596} 597 598static u_int32_t 599aac_cam_abort_ccb(struct cam_sim *sim, union ccb *ccb) 600{ 601 return (CAM_UA_ABORT); 602} 603 604static u_int32_t 605aac_cam_term_io(struct cam_sim *sim, union ccb *ccb) 606{ 607 return (CAM_UA_TERMIO); 608} 609
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