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 1.6 2006/12/22 23:26:23 swildner 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 42 #include <bus/cam/cam.h> 43 #include <bus/cam/cam_ccb.h> 44 #include <bus/cam/cam_debug.h> 45 #include <bus/cam/cam_sim.h> 46 #include <bus/cam/cam_xpt_sim.h> 47 #include <bus/cam/scsi/scsi_all.h> 48 #include <bus/cam/scsi/scsi_message.h> 49 50 #include "aac_compat.h" 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 #include "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 cam_simq_release(devq); 146 if (sim == NULL) { 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); 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); 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 cpi->hba_misc = PIM_NOBUSRESET; 224 cpi->hba_eng_cnt = 0; 225 cpi->max_target = camsc->inf->TargetsPerBus; 226 cpi->max_lun = 8; /* Per the controller spec */ 227 cpi->initiator_id = camsc->inf->InitiatorBusId; 228 cpi->bus_id = camsc->inf->BusNumber; 229 cpi->base_transfer_speed = 3300; 230 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 231 strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN); 232 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 233 cpi->unit_number = cam_sim_unit(sim); 234 235 ccb->ccb_h.status = CAM_REQ_CMP; 236 xpt_done(ccb); 237 return; 238 } 239 case XPT_GET_TRAN_SETTINGS: 240 { 241 u_int32_t handle; 242 243 handle = AAC_BTL_TO_HANDLE(camsc->inf->BusNumber, 244 ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 245 ccb->ccb_h.status = aac_cam_get_tran_settings(sc, &ccb->cts, 246 handle); 247 xpt_done(ccb); 248 return; 249 } 250 case XPT_SET_TRAN_SETTINGS: 251 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 252 xpt_done(ccb); 253 return; 254 case XPT_RESET_BUS: 255 if (!(sc->flags & AAC_FLAGS_CAM_NORESET)) { 256 ccb->ccb_h.status = aac_cam_reset_bus(sim, ccb); 257 } else { 258 ccb->ccb_h.status = CAM_REQ_CMP; 259 } 260 xpt_done(ccb); 261 return; 262 case XPT_ABORT: 263 ccb->ccb_h.status = aac_cam_abort_ccb(sim, ccb); 264 xpt_done(ccb); 265 return; 266 case XPT_TERM_IO: 267 ccb->ccb_h.status = aac_cam_term_io(sim, ccb); 268 xpt_done(ccb); 269 return; 270 default: 271 device_printf(sc->aac_dev, "Unsupported command 0x%x\n", 272 ccb->ccb_h.func_code); 273 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 274 xpt_done(ccb); 275 return; 276 } 277 278 /* Async ops that require communcation with the controller */ 279 280 if (aac_alloc_command(sc, &cm)) { 281 xpt_freeze_simq(sim, 1); 282 ccb->ccb_h.status = CAM_REQUEUE_REQ; 283 xpt_done(ccb); 284 return; 285 } 286 287 fib = cm->cm_fib; 288 srb = (struct aac_srb32 *)&fib->data[0]; 289 cm->cm_datalen = 0; 290 291 switch (ccb->ccb_h.flags & CAM_DIR_MASK) { 292 case CAM_DIR_IN: 293 srb->flags = AAC_SRB_FLAGS_DATA_IN; 294 cm->cm_flags |= AAC_CMD_DATAIN; 295 break; 296 case CAM_DIR_OUT: 297 srb->flags = AAC_SRB_FLAGS_DATA_OUT; 298 cm->cm_flags |= AAC_CMD_DATAOUT; 299 break; 300 case CAM_DIR_NONE: 301 srb->flags = AAC_SRB_FLAGS_NO_DATA_XFER; 302 break; 303 default: 304 srb->flags = AAC_SRB_FLAGS_UNSPECIFIED_DIRECTION; 305 cm->cm_flags |= AAC_CMD_DATAIN | AAC_CMD_DATAOUT; 306 break; 307 } 308 309 switch(ccb->ccb_h.func_code) { 310 case XPT_SCSI_IO: 311 { 312 struct ccb_scsiio *csio = &ccb->csio; 313 314 srb->function = AAC_SRB_FUNC_EXECUTE_SCSI; 315 316 /* 317 * Copy the CDB into the SRB. It's only 6-16 bytes, 318 * so a copy is not too expensive. 319 */ 320 srb->cdb_len = csio->cdb_len; 321 if (ccb->ccb_h.flags & CAM_CDB_POINTER) 322 bcopy(csio->cdb_io.cdb_ptr, (u_int8_t *)&srb->cdb[0], 323 srb->cdb_len); 324 else 325 bcopy(csio->cdb_io.cdb_bytes, (u_int8_t *)&srb->cdb[0], 326 srb->cdb_len); 327 328 /* Map the s/g list. XXX 32bit addresses only! */ 329 if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 330 if ((ccb->ccb_h.flags & CAM_SCATTER_VALID) == 0) { 331 srb->data_len = csio->dxfer_len; 332 if (ccb->ccb_h.flags & CAM_DATA_PHYS) { 333 srb->sg_map32.SgCount = 1; 334 srb->sg_map32.SgEntry[0].SgAddress = 335 (u_int32_t)csio->data_ptr; 336 srb->sg_map32.SgEntry[0].SgByteCount = 337 csio->dxfer_len; 338 } else { 339 /* 340 * Arrange things so that the S/G 341 * map will get set up automagically 342 */ 343 cm->cm_data = (void *)csio->data_ptr; 344 cm->cm_datalen = csio->dxfer_len; 345 cm->cm_sgtable = &srb->sg_map32; 346 } 347 } else { 348 /* XXX Need to handle multiple s/g elements */ 349 panic("aac_cam: multiple s/g elements"); 350 } 351 } else { 352 srb->sg_map32.SgCount = 0; 353 srb->sg_map32.SgEntry[0].SgByteCount = 0; 354 srb->data_len = 0; 355 } 356 357 break; 358 } 359 case XPT_RESET_DEV: 360 if (!(sc->flags & AAC_FLAGS_CAM_NORESET)) { 361 srb->function = AAC_SRB_FUNC_RESET_DEVICE; 362 break; 363 } else { 364 ccb->ccb_h.status = CAM_REQ_CMP; 365 xpt_done(ccb); 366 return; 367 } 368 default: 369 break; 370 } 371 372 srb->bus = camsc->inf->BusNumber; /* Bus number relative to the card */ 373 srb->target = ccb->ccb_h.target_id; 374 srb->lun = ccb->ccb_h.target_lun; 375 srb->timeout = ccb->ccb_h.timeout; /* XXX */ 376 srb->retry_limit = 0; 377 378 cm->cm_complete = aac_cam_complete; 379 cm->cm_private = ccb; 380 cm->cm_timestamp = time_second; 381 cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE; 382 383 fib->Header.XferState = 384 AAC_FIBSTATE_HOSTOWNED | 385 AAC_FIBSTATE_INITIALISED | 386 AAC_FIBSTATE_FROMHOST | 387 AAC_FIBSTATE_REXPECTED | 388 AAC_FIBSTATE_NORM; 389 fib->Header.Command = ScsiPortCommand; 390 fib->Header.Size = sizeof(struct aac_fib_header) + 391 sizeof(struct aac_srb32); 392 393 aac_enqueue_ready(cm); 394 aac_startio(cm->cm_sc); 395 396 return; 397 } 398 399 static void 400 aac_cam_poll(struct cam_sim *sim) 401 { 402 /* 403 * Pinging the interrupt routine isn't very safe, nor is it 404 * really necessary. Do nothing. 405 */ 406 } 407 408 static void 409 aac_cam_complete(struct aac_command *cm) 410 { 411 union ccb *ccb; 412 struct aac_srb_response *srbr; 413 struct aac_softc *sc; 414 415 debug_called(2); 416 417 sc = cm->cm_sc; 418 ccb = cm->cm_private; 419 srbr = (struct aac_srb_response *)&cm->cm_fib->data[0]; 420 421 if (srbr->fib_status != 0) { 422 device_printf(sc->aac_dev, "Passthru FIB failed!\n"); 423 ccb->ccb_h.status = CAM_REQ_ABORTED; 424 } else { 425 /* 426 * The SRB error codes just happen to match the CAM error 427 * codes. How convienient! 428 */ 429 ccb->ccb_h.status = srbr->srb_status; 430 431 /* Take care of SCSI_IO ops. */ 432 if (ccb->ccb_h.func_code == XPT_SCSI_IO) { 433 u_int8_t command, device; 434 435 ccb->csio.scsi_status = srbr->scsi_status; 436 437 /* Take care of autosense */ 438 if (srbr->sense_len) { 439 int sense_len, scsi_sense_len; 440 441 scsi_sense_len = sizeof(struct scsi_sense_data); 442 bzero(&ccb->csio.sense_data, scsi_sense_len); 443 sense_len = (srbr->sense_len > 444 scsi_sense_len) ? scsi_sense_len : 445 srbr->sense_len; 446 bcopy(&srbr->sense[0], &ccb->csio.sense_data, 447 srbr->sense_len); 448 ccb->csio.sense_len = sense_len; 449 ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 450 scsi_sense_print(&ccb->csio); 451 } 452 453 /* If this is an inquiry command, fake things out */ 454 if (ccb->ccb_h.flags & CAM_CDB_POINTER) 455 command = ccb->csio.cdb_io.cdb_ptr[0]; 456 else 457 command = ccb->csio.cdb_io.cdb_bytes[0]; 458 459 if ((command == INQUIRY) && 460 (ccb->ccb_h.status == CAM_REQ_CMP)) { 461 device = ccb->csio.data_ptr[0] & 0x1f; 462 /* 463 * We want DASD and PROC devices to only be 464 * visible through the pass device. 465 */ 466 if ((device == T_DIRECT) || 467 (device == T_PROCESSOR) || 468 (sc->flags & AAC_FLAGS_CAM_PASSONLY)) 469 ccb->csio.data_ptr[0] = 470 ((device & 0xe0) | T_NODEVICE); 471 } 472 } 473 } 474 475 aac_release_command(cm); 476 477 xpt_done(ccb); 478 479 return; 480 } 481 482 static u_int32_t 483 aac_cam_reset_bus(struct cam_sim *sim, union ccb *ccb) 484 { 485 struct aac_fib *fib; 486 struct aac_softc *sc; 487 struct aac_cam *camsc; 488 struct aac_vmioctl *vmi; 489 struct aac_resetbus *rbc; 490 int e; 491 492 camsc = (struct aac_cam *)cam_sim_softc(sim); 493 sc = camsc->inf->aac_sc; 494 495 if (sc == NULL) { 496 kprintf("Null sc?\n"); 497 return (CAM_REQ_ABORTED); 498 } 499 500 aac_alloc_sync_fib(sc, &fib, 0); 501 502 vmi = (struct aac_vmioctl *)&fib->data[0]; 503 bzero(vmi, sizeof(struct aac_vmioctl)); 504 505 vmi->Command = VM_Ioctl; 506 vmi->ObjType = FT_DRIVE; 507 vmi->MethId = sc->scsi_method_id; 508 vmi->ObjId = 0; 509 vmi->IoctlCmd = ResetBus; 510 511 rbc = (struct aac_resetbus *)&vmi->IoctlBuf[0]; 512 rbc->BusNumber = camsc->inf->BusNumber; 513 514 e = aac_sync_fib(sc, ContainerCommand, 0, fib, 515 sizeof(struct aac_vmioctl)); 516 if (e) { 517 device_printf(sc->aac_dev, "Error 0x%x sending passthrough\n", 518 e); 519 aac_release_sync_fib(sc); 520 return (CAM_REQ_ABORTED); 521 } 522 523 aac_release_sync_fib(sc); 524 return (CAM_REQ_CMP); 525 } 526 527 static u_int32_t 528 aac_cam_abort_ccb(struct cam_sim *sim, union ccb *ccb) 529 { 530 return (CAM_UA_ABORT); 531 } 532 533 static u_int32_t 534 aac_cam_term_io(struct cam_sim *sim, union ccb *ccb) 535 { 536 return (CAM_UA_TERMIO); 537 } 538 539 static int 540 aac_cam_get_tran_settings(struct aac_softc *sc, struct ccb_trans_settings *cts, u_int32_t handle) 541 { 542 struct aac_fib *fib; 543 struct aac_vmioctl *vmi; 544 struct aac_vmi_devinfo_resp *vmi_resp; 545 int error; 546 547 aac_alloc_sync_fib(sc, &fib, 0); 548 vmi = (struct aac_vmioctl *)&fib->data[0]; 549 bzero(vmi, sizeof(struct aac_vmioctl)); 550 551 vmi->Command = VM_Ioctl; 552 vmi->ObjType = FT_DRIVE; 553 vmi->MethId = sc->scsi_method_id; 554 vmi->ObjId = handle; 555 vmi->IoctlCmd = GetDeviceProbeInfo; 556 557 error = aac_sync_fib(sc, ContainerCommand, 0, fib, 558 sizeof(struct aac_vmioctl)); 559 if (error) { 560 device_printf(sc->aac_dev, "Error %d sending VMIoctl command\n", 561 error); 562 aac_release_sync_fib(sc); 563 return (CAM_REQ_INVALID); 564 } 565 566 vmi_resp = (struct aac_vmi_devinfo_resp *)&fib->data[0]; 567 if (vmi_resp->Status != ST_OK) { 568 debug(1, "VM_Ioctl returned %d\n", vmi_resp->Status); 569 aac_release_sync_fib(sc); 570 return (CAM_REQ_CMP_ERR); 571 } 572 573 cts->bus_width = ((vmi_resp->Inquiry7 & 0x60) >> 5); 574 if (vmi_resp->ScsiRate) { 575 cts->sync_period = 576 scsi_calc_syncparam((10000 / vmi_resp->ScsiRate)); 577 cts->sync_offset = vmi_resp->ScsiOffset; 578 } else { 579 cts->sync_period = 0; 580 cts->sync_offset = 0; 581 } 582 cts->flags &= ~(CCB_TRANS_DISC_ENB | CCB_TRANS_TAG_ENB); 583 cts->valid = CCB_TRANS_DISC_VALID | 584 CCB_TRANS_SYNC_RATE_VALID | 585 CCB_TRANS_SYNC_OFFSET_VALID | 586 CCB_TRANS_BUS_WIDTH_VALID | 587 CCB_TRANS_TQ_VALID; 588 589 aac_release_sync_fib(sc); 590 return (CAM_REQ_CMP); 591 } 592