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 * $FreeBSD$ 27 */ 28 29 /* 30 * CAM front-end for communicating with non-DASD devices 31 */ 32 33 #include "opt_aac.h" 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/sysctl.h> 39 #include <sys/malloc.h> 40 41 #include <cam/cam.h> 42 #include <cam/cam_ccb.h> 43 #include <cam/cam_debug.h> 44 #include <cam/cam_sim.h> 45 #include <cam/cam_xpt_sim.h> 46 #include <cam/scsi/scsi_all.h> 47 #include <cam/scsi/scsi_message.h> 48 49 #include <dev/aac/aac_compat.h> 50 #include <sys/bus.h> 51 #include <sys/conf.h> 52 #include <sys/devicestat.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 <dev/aac/aac_ioctl.h> 64 #include <dev/aac/aacvar.h> 65 #include <dev/aac/aac_cam.h> 66 67 struct aac_cam { 68 device_t dev; 69 struct aac_cam_inf *inf; 70 struct cam_sim *sim; 71 struct cam_path *path; 72 }; 73 74 static int aac_cam_probe(device_t dev); 75 static int aac_cam_attach(device_t dev); 76 static int aac_cam_detach(device_t dev); 77 static void aac_cam_action(struct cam_sim *, union ccb *); 78 static void aac_cam_poll(struct cam_sim *); 79 static void aac_cam_complete(struct aac_command *); 80 static u_int32_t aac_cam_reset_bus(struct cam_sim *, union ccb *); 81 static u_int32_t aac_cam_abort_ccb(struct cam_sim *, union ccb *); 82 static u_int32_t aac_cam_term_io(struct cam_sim *, union ccb *); 83 static int aac_cam_get_tran_settings(struct aac_softc *, struct ccb_trans_settings *, u_int32_t); 84 85 static devclass_t aac_pass_devclass; 86 87 static device_method_t aac_pass_methods[] = { 88 DEVMETHOD(device_probe, aac_cam_probe), 89 DEVMETHOD(device_attach, aac_cam_attach), 90 DEVMETHOD(device_detach, aac_cam_detach), 91 { 0, 0 } 92 }; 93 94 static driver_t aac_pass_driver = { 95 "aacp", 96 aac_pass_methods, 97 sizeof(struct aac_cam) 98 }; 99 100 DRIVER_MODULE(aacp, aac, aac_pass_driver, aac_pass_devclass, 0, 0); 101 MODULE_DEPEND(aacp, cam, 1, 1, 1); 102 103 MALLOC_DEFINE(M_AACCAM, "aaccam", "AAC CAM info"); 104 105 static int 106 aac_cam_probe(device_t dev) 107 { 108 109 debug_called(2); 110 111 return (0); 112 } 113 114 static int 115 aac_cam_detach(device_t dev) 116 { 117 118 return (0); 119 } 120 121 /* 122 * Register the driver as a CAM SIM 123 */ 124 static int 125 aac_cam_attach(device_t dev) 126 { 127 struct cam_devq *devq; 128 struct cam_sim *sim; 129 struct cam_path *path; 130 struct aac_cam *camsc; 131 struct aac_cam_inf *inf; 132 133 debug_called(1); 134 135 camsc = (struct aac_cam *)device_get_softc(dev); 136 inf = (struct aac_cam_inf *)device_get_ivars(dev); 137 camsc->inf = inf; 138 139 devq = cam_simq_alloc(inf->TargetsPerBus); 140 if (devq == NULL) 141 return (EIO); 142 143 sim = cam_sim_alloc(aac_cam_action, aac_cam_poll, "aacp", camsc, 144 device_get_unit(dev), 1, 1, devq); 145 if (sim == NULL) { 146 cam_simq_free(devq); 147 return (EIO); 148 } 149 150 /* Since every bus has it's own sim, every bus 'appears' as bus 0 */ 151 if (xpt_bus_register(sim, 0) != CAM_SUCCESS) { 152 cam_sim_free(sim, TRUE); 153 return (EIO); 154 } 155 156 if (xpt_create_path(&path, NULL, cam_sim_path(sim), 157 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 158 xpt_bus_deregister(cam_sim_path(sim)); 159 cam_sim_free(sim, TRUE); 160 return (EIO); 161 } 162 163 camsc->sim = sim; 164 camsc->path = path; 165 166 return (0); 167 } 168 169 static void 170 aac_cam_action(struct cam_sim *sim, union ccb *ccb) 171 { 172 struct aac_cam *camsc; 173 struct aac_softc *sc; 174 struct aac_srb32 *srb; 175 struct aac_fib *fib; 176 struct aac_command *cm; 177 178 debug_called(2); 179 180 camsc = (struct aac_cam *)cam_sim_softc(sim); 181 sc = camsc->inf->aac_sc; 182 183 /* Synchronous ops, and ops that don't require communication with the 184 * controller */ 185 switch(ccb->ccb_h.func_code) { 186 case XPT_SCSI_IO: 187 case XPT_RESET_DEV: 188 /* These are handled down below */ 189 break; 190 case XPT_CALC_GEOMETRY: 191 { 192 struct ccb_calc_geometry *ccg; 193 u_int32_t size_mb; 194 u_int32_t secs_per_cylinder; 195 196 ccg = &ccb->ccg; 197 size_mb = ccg->volume_size / 198 ((1024L * 1024L) / ccg->block_size); 199 if (size_mb >= (2 * 1024)) { /* 2GB */ 200 ccg->heads = 255; 201 ccg->secs_per_track = 63; 202 } else if (size_mb >= (1 * 1024)) { /* 1GB */ 203 ccg->heads = 128; 204 ccg->secs_per_track = 32; 205 } else { 206 ccg->heads = 64; 207 ccg->secs_per_track = 32; 208 } 209 secs_per_cylinder = ccg->heads * ccg->secs_per_track; 210 ccg->cylinders = ccg->volume_size / secs_per_cylinder; 211 212 ccb->ccb_h.status = CAM_REQ_CMP; 213 xpt_done(ccb); 214 return; 215 } 216 case XPT_PATH_INQ: 217 { 218 struct ccb_pathinq *cpi = &ccb->cpi; 219 220 cpi->version_num = 1; 221 cpi->hba_inquiry = PI_WIDE_16; 222 cpi->target_sprt = 0; 223 224 /* Resetting via the passthrough causes problems. */ 225 cpi->hba_misc = PIM_NOBUSRESET; 226 cpi->hba_eng_cnt = 0; 227 cpi->max_target = camsc->inf->TargetsPerBus; 228 cpi->max_lun = 8; /* Per the controller spec */ 229 cpi->initiator_id = camsc->inf->InitiatorBusId; 230 cpi->bus_id = camsc->inf->BusNumber; 231 cpi->base_transfer_speed = 3300; 232 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 233 strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN); 234 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 235 cpi->unit_number = cam_sim_unit(sim); 236 237 ccb->ccb_h.status = CAM_REQ_CMP; 238 xpt_done(ccb); 239 return; 240 } 241 case XPT_GET_TRAN_SETTINGS: 242 { 243 u_int32_t handle; 244 245 handle = AAC_BTL_TO_HANDLE(camsc->inf->BusNumber, 246 ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 247 ccb->ccb_h.status = aac_cam_get_tran_settings(sc, &ccb->cts, 248 handle); 249 xpt_done(ccb); 250 return; 251 } 252 case XPT_SET_TRAN_SETTINGS: 253 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 254 xpt_done(ccb); 255 return; 256 case XPT_RESET_BUS: 257 if (!(sc->quirks & AAC_QUIRK_CAM_NORESET)) { 258 ccb->ccb_h.status = aac_cam_reset_bus(sim, ccb); 259 } else { 260 ccb->ccb_h.status = CAM_REQ_CMP; 261 } 262 xpt_done(ccb); 263 return; 264 case XPT_ABORT: 265 ccb->ccb_h.status = aac_cam_abort_ccb(sim, ccb); 266 xpt_done(ccb); 267 return; 268 case XPT_TERM_IO: 269 ccb->ccb_h.status = aac_cam_term_io(sim, ccb); 270 xpt_done(ccb); 271 return; 272 default: 273 device_printf(sc->aac_dev, "Unsupported command 0x%x\n", 274 ccb->ccb_h.func_code); 275 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 276 xpt_done(ccb); 277 return; 278 } 279 280 /* Async ops that require communcation with the controller */ 281 282 if (aac_alloc_command(sc, &cm)) { 283 xpt_freeze_simq(sim, 1); 284 ccb->ccb_h.status = CAM_REQUEUE_REQ; 285 xpt_done(ccb); 286 return; 287 } 288 289 fib = cm->cm_fib; 290 srb = (struct aac_srb32 *)&fib->data[0]; 291 cm->cm_datalen = 0; 292 293 switch (ccb->ccb_h.flags & CAM_DIR_MASK) { 294 case CAM_DIR_IN: 295 srb->flags = AAC_SRB_FLAGS_DATA_IN; 296 cm->cm_flags |= AAC_CMD_DATAIN; 297 break; 298 case CAM_DIR_OUT: 299 srb->flags = AAC_SRB_FLAGS_DATA_OUT; 300 cm->cm_flags |= AAC_CMD_DATAOUT; 301 break; 302 case CAM_DIR_NONE: 303 srb->flags = AAC_SRB_FLAGS_NO_DATA_XFER; 304 break; 305 default: 306 srb->flags = AAC_SRB_FLAGS_UNSPECIFIED_DIRECTION; 307 cm->cm_flags |= AAC_CMD_DATAIN | AAC_CMD_DATAOUT; 308 break; 309 } 310 311 switch(ccb->ccb_h.func_code) { 312 case XPT_SCSI_IO: 313 { 314 struct ccb_scsiio *csio = &ccb->csio; 315 316 srb->function = AAC_SRB_FUNC_EXECUTE_SCSI; 317 318 /* 319 * Copy the CDB into the SRB. It's only 6-16 bytes, 320 * so a copy is not too expensive. 321 */ 322 srb->cdb_len = csio->cdb_len; 323 if (ccb->ccb_h.flags & CAM_CDB_POINTER) 324 bcopy(csio->cdb_io.cdb_ptr, (u_int8_t *)&srb->cdb[0], 325 srb->cdb_len); 326 else 327 bcopy(csio->cdb_io.cdb_bytes, (u_int8_t *)&srb->cdb[0], 328 srb->cdb_len); 329 330 /* Map the s/g list. XXX 32bit addresses only! */ 331 if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 332 if ((ccb->ccb_h.flags & CAM_SCATTER_VALID) == 0) { 333 srb->data_len = csio->dxfer_len; 334 if (ccb->ccb_h.flags & CAM_DATA_PHYS) { 335 srb->sg_map32.SgCount = 1; 336 srb->sg_map32.SgEntry[0].SgAddress = 337 (u_int32_t)csio->data_ptr; 338 srb->sg_map32.SgEntry[0].SgByteCount = 339 csio->dxfer_len; 340 } else { 341 /* 342 * Arrange things so that the S/G 343 * map will get set up automagically 344 */ 345 cm->cm_data = (void *)csio->data_ptr; 346 cm->cm_datalen = csio->dxfer_len; 347 cm->cm_sgtable = &srb->sg_map32; 348 } 349 } else { 350 /* XXX Need to handle multiple s/g elements */ 351 panic("aac_cam: multiple s/g elements"); 352 } 353 } else { 354 srb->sg_map32.SgCount = 0; 355 srb->sg_map32.SgEntry[0].SgByteCount = 0; 356 srb->data_len = 0; 357 } 358 359 break; 360 } 361 case XPT_RESET_DEV: 362 if (!(sc->quirks & AAC_QUIRK_CAM_NORESET)) { 363 srb->function = AAC_SRB_FUNC_RESET_DEVICE; 364 break; 365 } else { 366 ccb->ccb_h.status = CAM_REQ_CMP; 367 xpt_done(ccb); 368 return; 369 } 370 default: 371 break; 372 } 373 374 srb->bus = camsc->inf->BusNumber; /* Bus number relative to the card */ 375 srb->target = ccb->ccb_h.target_id; 376 srb->lun = ccb->ccb_h.target_lun; 377 srb->timeout = ccb->ccb_h.timeout; /* XXX */ 378 srb->retry_limit = 0; 379 380 cm->cm_complete = aac_cam_complete; 381 cm->cm_private = ccb; 382 cm->cm_timestamp = time_second; 383 cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE; 384 385 fib->Header.XferState = 386 AAC_FIBSTATE_HOSTOWNED | 387 AAC_FIBSTATE_INITIALISED | 388 AAC_FIBSTATE_FROMHOST | 389 AAC_FIBSTATE_REXPECTED | 390 AAC_FIBSTATE_NORM; 391 fib->Header.Command = ScsiPortCommand; 392 fib->Header.Size = sizeof(struct aac_fib_header) + 393 sizeof(struct aac_srb32); 394 395 aac_enqueue_ready(cm); 396 aac_startio(cm->cm_sc); 397 398 return; 399 } 400 401 static void 402 aac_cam_poll(struct cam_sim *sim) 403 { 404 /* 405 * Pinging the interrupt routine isn't very safe, nor is it 406 * really necessary. Do nothing. 407 */ 408 } 409 410 static void 411 aac_cam_complete(struct aac_command *cm) 412 { 413 union ccb *ccb; 414 struct aac_srb_response *srbr; 415 struct aac_softc *sc; 416 417 debug_called(2); 418 419 sc = cm->cm_sc; 420 ccb = cm->cm_private; 421 srbr = (struct aac_srb_response *)&cm->cm_fib->data[0]; 422 423 if (srbr->fib_status != 0) { 424 device_printf(sc->aac_dev, "Passthru FIB failed!\n"); 425 ccb->ccb_h.status = CAM_REQ_ABORTED; 426 } else { 427 /* 428 * The SRB error codes just happen to match the CAM error 429 * codes. How convienient! 430 */ 431 ccb->ccb_h.status = srbr->srb_status; 432 433 /* Take care of SCSI_IO ops. */ 434 if (ccb->ccb_h.func_code == XPT_SCSI_IO) { 435 u_int8_t command, device; 436 437 ccb->csio.scsi_status = srbr->scsi_status; 438 439 /* Take care of autosense */ 440 if (srbr->sense_len) { 441 int sense_len, scsi_sense_len; 442 443 scsi_sense_len = sizeof(struct scsi_sense_data); 444 bzero(&ccb->csio.sense_data, scsi_sense_len); 445 sense_len = (srbr->sense_len > 446 scsi_sense_len) ? scsi_sense_len : 447 srbr->sense_len; 448 bcopy(&srbr->sense[0], &ccb->csio.sense_data, 449 srbr->sense_len); 450 ccb->csio.sense_len = sense_len; 451 ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 452 scsi_sense_print(&ccb->csio); 453 } 454 455 /* If this is an inquiry command, fake things out */ 456 if (ccb->ccb_h.flags & CAM_CDB_POINTER) 457 command = ccb->csio.cdb_io.cdb_ptr[0]; 458 else 459 command = ccb->csio.cdb_io.cdb_bytes[0]; 460 461 if ((command == INQUIRY) && 462 (ccb->ccb_h.status == CAM_REQ_CMP)) { 463 device = ccb->csio.data_ptr[0] & 0x1f; 464 /* 465 * We want DASD and PROC devices to only be 466 * visible through the pass device. 467 */ 468 if ((device == T_DIRECT) || 469 (device == T_PROCESSOR) || 470 (sc->quirks & AAC_QUIRK_CAM_PASSONLY)) 471 ccb->csio.data_ptr[0] = 472 ((device & 0xe0) | T_NODEVICE); 473 } 474 } 475 } 476 477 aac_release_command(cm); 478 479 xpt_done(ccb); 480 481 return; 482 } 483 484 static u_int32_t 485 aac_cam_reset_bus(struct cam_sim *sim, union ccb *ccb) 486 { 487 struct aac_fib *fib; 488 struct aac_softc *sc; 489 struct aac_cam *camsc; 490 struct aac_vmioctl *vmi; 491 struct aac_resetbus *rbc; 492 int e; 493 494 camsc = (struct aac_cam *)cam_sim_softc(sim); 495 sc = camsc->inf->aac_sc; 496 497 if (sc == NULL) { 498 printf("Null sc?\n"); 499 return (CAM_REQ_ABORTED); 500 } 501 502 aac_alloc_sync_fib(sc, &fib, 0); 503 504 vmi = (struct aac_vmioctl *)&fib->data[0]; 505 bzero(vmi, sizeof(struct aac_vmioctl)); 506 507 vmi->Command = VM_Ioctl; 508 vmi->ObjType = FT_DRIVE; 509 vmi->MethId = sc->scsi_method_id; 510 vmi->ObjId = 0; 511 vmi->IoctlCmd = ResetBus; 512 513 rbc = (struct aac_resetbus *)&vmi->IoctlBuf[0]; 514 rbc->BusNumber = camsc->inf->BusNumber; 515 516 e = aac_sync_fib(sc, ContainerCommand, 0, fib, 517 sizeof(struct aac_vmioctl)); 518 if (e) { 519 device_printf(sc->aac_dev,"Error %d sending ResetBus command\n", 520 e); 521 aac_release_sync_fib(sc); 522 return (CAM_REQ_ABORTED); 523 } 524 525 aac_release_sync_fib(sc); 526 return (CAM_REQ_CMP); 527 } 528 529 static u_int32_t 530 aac_cam_abort_ccb(struct cam_sim *sim, union ccb *ccb) 531 { 532 return (CAM_UA_ABORT); 533 } 534 535 static u_int32_t 536 aac_cam_term_io(struct cam_sim *sim, union ccb *ccb) 537 { 538 return (CAM_UA_TERMIO); 539 } 540 541 static int 542 aac_cam_get_tran_settings(struct aac_softc *sc, struct ccb_trans_settings *cts, u_int32_t handle) 543 { 544 struct aac_fib *fib; 545 struct aac_vmioctl *vmi; 546 struct aac_vmi_devinfo_resp *vmi_resp; 547 int error; 548 549 aac_alloc_sync_fib(sc, &fib, 0); 550 vmi = (struct aac_vmioctl *)&fib->data[0]; 551 bzero(vmi, sizeof(struct aac_vmioctl)); 552 553 vmi->Command = VM_Ioctl; 554 vmi->ObjType = FT_DRIVE; 555 vmi->MethId = sc->scsi_method_id; 556 vmi->ObjId = handle; 557 vmi->IoctlCmd = GetDeviceProbeInfo; 558 559 error = aac_sync_fib(sc, ContainerCommand, 0, fib, 560 sizeof(struct aac_vmioctl)); 561 if (error) { 562 device_printf(sc->aac_dev, "Error %d sending GetDeviceProbeInfo" 563 " command\n", error); 564 aac_release_sync_fib(sc); 565 return (CAM_REQ_INVALID); 566 } 567 568 vmi_resp = (struct aac_vmi_devinfo_resp *)&fib->data[0]; 569 if (vmi_resp->Status != ST_OK) { 570 /* 571 * The only reason why this command will return an error is 572 * if the requested device doesn't exist. 573 */ 574 debug(1, "GetDeviceProbeInfo returned %d\n", vmi_resp->Status); 575 aac_release_sync_fib(sc); 576 return (CAM_DEV_NOT_THERE); 577 } 578 579 cts->bus_width = ((vmi_resp->Inquiry7 & 0x60) >> 5); 580 cts->valid = CCB_TRANS_BUS_WIDTH_VALID; 581 582 if (vmi_resp->ScsiRate) { 583 cts->sync_period = 584 scsi_calc_syncparam((10000 / vmi_resp->ScsiRate)); 585 cts->sync_offset = vmi_resp->ScsiOffset; 586 cts->valid |= CCB_TRANS_SYNC_RATE_VALID | 587 CCB_TRANS_SYNC_OFFSET_VALID; 588 } 589 590 cts->flags &= ~(CCB_TRANS_DISC_ENB | CCB_TRANS_TAG_ENB); 591 cts->valid |= CCB_TRANS_DISC_VALID | 592 CCB_TRANS_TQ_VALID; 593 594 aac_release_sync_fib(sc); 595 return (CAM_REQ_CMP); 596 } 597