sys/dev/ata/ata-all.c

   1 /*-
   2  * Copyright (c) 1998 - 2008 Søren Schmidt <sos@FreeBSD.org>
   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  *    without modification, immediately at the beginning of the file.
  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 ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26
  27 #include <sys/cdefs.h>
  28 __FBSDID("$FreeBSD$");
  29
  30 #include <sys/param.h>
  31 #include <sys/systm.h>
  32 #include <sys/ata.h>
  33 #include <sys/kernel.h>
  34 #include <sys/module.h>
  35 #include <sys/endian.h>
  36 #include <sys/ctype.h>
  37 #include <sys/conf.h>
  38 #include <sys/bus.h>
  39 #include <sys/bio.h>
  40 #include <sys/malloc.h>
  41 #include <sys/sysctl.h>
  42 #include <sys/sema.h>
  43 #include <sys/taskqueue.h>
  44 #include <vm/uma.h>
  45 #include <machine/stdarg.h>
  46 #include <machine/resource.h>
  47 #include <machine/bus.h>
  48 #include <sys/rman.h>
  49 #include <dev/ata/ata-all.h>
  50 #include <dev/pci/pcivar.h>
  51 #include <ata_if.h>
  52
  53 #include <cam/cam.h>
  54 #include <cam/cam_ccb.h>
  55 #include <cam/cam_sim.h>
  56 #include <cam/cam_xpt_sim.h>
  57 #include <cam/cam_debug.h>
  58
  59 /* prototypes */
  60 static void ataaction(struct cam_sim *sim, union ccb *ccb);
  61 static void atapoll(struct cam_sim *sim);
  62 static void ata_cam_begin_transaction(device_t dev, union ccb *ccb);
  63 static void ata_cam_end_transaction(device_t dev, struct ata_request *request);
  64 static void ata_cam_request_sense(device_t dev, struct ata_request *request);
  65 static int ata_check_ids(device_t dev, union ccb *ccb);
  66 static void ata_conn_event(void *context, int dummy);
  67 static void ata_init(void);
  68 static void ata_interrupt_locked(void *data);
  69 static int ata_module_event_handler(module_t mod, int what, void *arg);
  70 static void ata_periodic_poll(void *data);
  71 static int ata_str2mode(const char *str);
  72 static void ata_uninit(void);
  73
  74 /* global vars */
  75 MALLOC_DEFINE(M_ATA, "ata_generic", "ATA driver generic layer");
  76 int (*ata_raid_ioctl_func)(u_long cmd, caddr_t data) = NULL;
  77 devclass_t ata_devclass;
  78 uma_zone_t ata_request_zone;
  79 int ata_dma_check_80pin = 1;
  80
  81 /* sysctl vars */
  82 static SYSCTL_NODE(_hw, OID_AUTO, ata, CTLFLAG_RD, 0, "ATA driver parameters");
  83 SYSCTL_INT(_hw_ata, OID_AUTO, ata_dma_check_80pin,
  84            CTLFLAG_RWTUN, &ata_dma_check_80pin, 0,
  85            "Check for 80pin cable before setting ATA DMA mode");
  86 FEATURE(ata_cam, "ATA devices are accessed through the cam(4) driver");
  87
  88 /*
  89  * newbus device interface related functions
  90  */
  91 int
  92 ata_probe(device_t dev)
  93 {
  94     return (BUS_PROBE_LOW_PRIORITY);
  95 }
  96
  97 int
  98 ata_attach(device_t dev)
  99 {
 100     struct ata_channel *ch = device_get_softc(dev);
 101     int error, rid;
 102     struct cam_devq *devq;
 103     const char *res;
 104     char buf[64];
 105     int i, mode;
 106
 107     /* check that we have a virgin channel to attach */
 108     if (ch->r_irq)
 109         return EEXIST;
 110
 111     /* initialize the softc basics */
 112     ch->dev = dev;
 113     ch->state = ATA_IDLE;
 114     bzero(&ch->state_mtx, sizeof(struct mtx));
 115     mtx_init(&ch->state_mtx, "ATA state lock", NULL, MTX_DEF);
 116     TASK_INIT(&ch->conntask, 0, ata_conn_event, dev);
 117         for (i = 0; i < 16; i++) {
 118                 ch->user[i].revision = 0;
 119                 snprintf(buf, sizeof(buf), "dev%d.sata_rev", i);
 120                 if (resource_int_value(device_get_name(dev),
 121                     device_get_unit(dev), buf, &mode) != 0 &&
 122                     resource_int_value(device_get_name(dev),
 123                     device_get_unit(dev), "sata_rev", &mode) != 0)
 124                         mode = -1;
 125                 if (mode >= 0)
 126                         ch->user[i].revision = mode;
 127                 ch->user[i].mode = 0;
 128                 snprintf(buf, sizeof(buf), "dev%d.mode", i);
 129                 if (resource_string_value(device_get_name(dev),
 130                     device_get_unit(dev), buf, &res) == 0)
 131                         mode = ata_str2mode(res);
 132                 else if (resource_string_value(device_get_name(dev),
 133                     device_get_unit(dev), "mode", &res) == 0)
 134                         mode = ata_str2mode(res);
 135                 else
 136                         mode = -1;
 137                 if (mode >= 0)
 138                         ch->user[i].mode = mode;
 139                 if (ch->flags & ATA_SATA)
 140                         ch->user[i].bytecount = 8192;
 141                 else
 142                         ch->user[i].bytecount = MAXPHYS;
 143                 ch->user[i].caps = 0;
 144                 ch->curr[i] = ch->user[i];
 145                 if (ch->flags & ATA_SATA) {
 146                         if (ch->pm_level > 0)
 147                                 ch->user[i].caps |= CTS_SATA_CAPS_H_PMREQ;
 148                         if (ch->pm_level > 1)
 149                                 ch->user[i].caps |= CTS_SATA_CAPS_D_PMREQ;
 150                 } else {
 151                         if (!(ch->flags & ATA_NO_48BIT_DMA))
 152                                 ch->user[i].caps |= CTS_ATA_CAPS_H_DMA48;
 153                 }
 154         }
 155         callout_init(&ch->poll_callout, 1);
 156
 157     /* allocate DMA resources if DMA HW present*/
 158     if (ch->dma.alloc)
 159         ch->dma.alloc(dev);
 160
 161     /* setup interrupt delivery */
 162     rid = ATA_IRQ_RID;
 163     ch->r_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
 164                                        RF_SHAREABLE | RF_ACTIVE);
 165     if (!ch->r_irq) {
 166         device_printf(dev, "unable to allocate interrupt\n");
 167         return ENXIO;
 168     }
 169     if ((error = bus_setup_intr(dev, ch->r_irq, ATA_INTR_FLAGS, NULL,
 170                                 ata_interrupt, ch, &ch->ih))) {
 171         bus_release_resource(dev, SYS_RES_IRQ, rid, ch->r_irq);
 172         device_printf(dev, "unable to setup interrupt\n");
 173         return error;
 174     }
 175
 176         if (ch->flags & ATA_PERIODIC_POLL)
 177                 callout_reset(&ch->poll_callout, hz, ata_periodic_poll, ch);
 178         mtx_lock(&ch->state_mtx);
 179         /* Create the device queue for our SIM. */
 180         devq = cam_simq_alloc(1);
 181         if (devq == NULL) {
 182                 device_printf(dev, "Unable to allocate simq\n");
 183                 error = ENOMEM;
 184                 goto err1;
 185         }
 186         /* Construct SIM entry */
 187         ch->sim = cam_sim_alloc(ataaction, atapoll, "ata", ch,
 188             device_get_unit(dev), &ch->state_mtx, 1, 0, devq);
 189         if (ch->sim == NULL) {
 190                 device_printf(dev, "unable to allocate sim\n");
 191                 cam_simq_free(devq);
 192                 error = ENOMEM;
 193                 goto err1;
 194         }
 195         if (xpt_bus_register(ch->sim, dev, 0) != CAM_SUCCESS) {
 196                 device_printf(dev, "unable to register xpt bus\n");
 197                 error = ENXIO;
 198                 goto err2;
 199         }
 200         if (xpt_create_path(&ch->path, /*periph*/NULL, cam_sim_path(ch->sim),
 201             CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
 202                 device_printf(dev, "unable to create path\n");
 203                 error = ENXIO;
 204                 goto err3;
 205         }
 206         mtx_unlock(&ch->state_mtx);
 207         return (0);
 208
 209 err3:
 210         xpt_bus_deregister(cam_sim_path(ch->sim));
 211 err2:
 212         cam_sim_free(ch->sim, /*free_devq*/TRUE);
 213         ch->sim = NULL;
 214 err1:
 215         bus_release_resource(dev, SYS_RES_IRQ, rid, ch->r_irq);
 216         mtx_unlock(&ch->state_mtx);
 217         if (ch->flags & ATA_PERIODIC_POLL)
 218                 callout_drain(&ch->poll_callout);
 219         return (error);
 220 }
 221
 222 int
 223 ata_detach(device_t dev)
 224 {
 225     struct ata_channel *ch = device_get_softc(dev);
 226
 227     /* check that we have a valid channel to detach */
 228     if (!ch->r_irq)
 229         return ENXIO;
 230
 231     /* grap the channel lock so no new requests gets launched */
 232     mtx_lock(&ch->state_mtx);
 233     ch->state |= ATA_STALL_QUEUE;
 234     mtx_unlock(&ch->state_mtx);
 235     if (ch->flags & ATA_PERIODIC_POLL)
 236         callout_drain(&ch->poll_callout);
 237
 238     taskqueue_drain(taskqueue_thread, &ch->conntask);
 239
 240         mtx_lock(&ch->state_mtx);
 241         xpt_async(AC_LOST_DEVICE, ch->path, NULL);
 242         xpt_free_path(ch->path);
 243         xpt_bus_deregister(cam_sim_path(ch->sim));
 244         cam_sim_free(ch->sim, /*free_devq*/TRUE);
 245         ch->sim = NULL;
 246         mtx_unlock(&ch->state_mtx);
 247
 248     /* release resources */
 249     bus_teardown_intr(dev, ch->r_irq, ch->ih);
 250     bus_release_resource(dev, SYS_RES_IRQ, ATA_IRQ_RID, ch->r_irq);
 251     ch->r_irq = NULL;
 252
 253     /* free DMA resources if DMA HW present*/
 254     if (ch->dma.free)
 255         ch->dma.free(dev);
 256
 257     mtx_destroy(&ch->state_mtx);
 258     return 0;
 259 }
 260
 261 static void
 262 ata_conn_event(void *context, int dummy)
 263 {
 264         device_t dev = (device_t)context;
 265         struct ata_channel *ch = device_get_softc(dev);
 266         union ccb *ccb;
 267
 268         mtx_lock(&ch->state_mtx);
 269         if (ch->sim == NULL) {
 270                 mtx_unlock(&ch->state_mtx);
 271                 return;
 272         }
 273         ata_reinit(dev);
 274         if ((ccb = xpt_alloc_ccb_nowait()) == NULL)
 275                 return;
 276         if (xpt_create_path(&ccb->ccb_h.path, NULL,
 277             cam_sim_path(ch->sim),
 278             CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
 279                 xpt_free_ccb(ccb);
 280                 return;
 281         }
 282         xpt_rescan(ccb);
 283         mtx_unlock(&ch->state_mtx);
 284 }
 285
 286 int
 287 ata_reinit(device_t dev)
 288 {
 289     struct ata_channel *ch = device_get_softc(dev);
 290     struct ata_request *request;
 291
 292         xpt_freeze_simq(ch->sim, 1);
 293         if ((request = ch->running)) {
 294                 ch->running = NULL;
 295                 if (ch->state == ATA_ACTIVE)
 296                     ch->state = ATA_IDLE;
 297                 callout_stop(&request->callout);
 298                 if (ch->dma.unload)
 299                     ch->dma.unload(request);
 300                 request->result = ERESTART;
 301                 ata_cam_end_transaction(dev, request);
 302         }
 303         /* reset the controller HW, the channel and device(s) */
 304         ATA_RESET(dev);
 305         /* Tell the XPT about the event */
 306         xpt_async(AC_BUS_RESET, ch->path, NULL);
 307         xpt_release_simq(ch->sim, TRUE);
 308         return(0);
 309 }
 310
 311 int
 312 ata_suspend(device_t dev)
 313 {
 314     struct ata_channel *ch;
 315
 316     /* check for valid device */
 317     if (!dev || !(ch = device_get_softc(dev)))
 318         return ENXIO;
 319
 320         if (ch->flags & ATA_PERIODIC_POLL)
 321                 callout_drain(&ch->poll_callout);
 322         mtx_lock(&ch->state_mtx);
 323         xpt_freeze_simq(ch->sim, 1);
 324         while (ch->state != ATA_IDLE)
 325                 msleep(ch, &ch->state_mtx, PRIBIO, "atasusp", hz/100);
 326         mtx_unlock(&ch->state_mtx);
 327     return(0);
 328 }
 329
 330 int
 331 ata_resume(device_t dev)
 332 {
 333     struct ata_channel *ch;
 334     int error;
 335
 336     /* check for valid device */
 337     if (!dev || !(ch = device_get_softc(dev)))
 338         return ENXIO;
 339
 340         mtx_lock(&ch->state_mtx);
 341         error = ata_reinit(dev);
 342         xpt_release_simq(ch->sim, TRUE);
 343         mtx_unlock(&ch->state_mtx);
 344         if (ch->flags & ATA_PERIODIC_POLL)
 345                 callout_reset(&ch->poll_callout, hz, ata_periodic_poll, ch);
 346     return error;
 347 }
 348
 349 void
 350 ata_interrupt(void *data)
 351 {
 352     struct ata_channel *ch = (struct ata_channel *)data;
 353
 354     mtx_lock(&ch->state_mtx);
 355     ata_interrupt_locked(data);
 356     mtx_unlock(&ch->state_mtx);
 357 }
 358
 359 static void
 360 ata_interrupt_locked(void *data)
 361 {
 362         struct ata_channel *ch = (struct ata_channel *)data;
 363         struct ata_request *request;
 364
 365         /* ignore interrupt if its not for us */
 366         if (ch->hw.status && !ch->hw.status(ch->dev))
 367                 return;
 368
 369         /* do we have a running request */
 370         if (!(request = ch->running))
 371                 return;
 372
 373         ATA_DEBUG_RQ(request, "interrupt");
 374
 375         /* safetycheck for the right state */
 376         if (ch->state == ATA_IDLE) {
 377                 device_printf(request->dev, "interrupt on idle channel ignored\n");
 378                 return;
 379         }
 380
 381         /*
 382          * we have the HW locks, so end the transaction for this request
 383          * if it finishes immediately otherwise wait for next interrupt
 384          */
 385         if (ch->hw.end_transaction(request) == ATA_OP_FINISHED) {
 386                 ch->running = NULL;
 387                 if (ch->state == ATA_ACTIVE)
 388                         ch->state = ATA_IDLE;
 389                 ata_cam_end_transaction(ch->dev, request);
 390                 return;
 391         }
 392 }
 393
 394 static void
 395 ata_periodic_poll(void *data)
 396 {
 397     struct ata_channel *ch = (struct ata_channel *)data;
 398
 399     callout_reset(&ch->poll_callout, hz, ata_periodic_poll, ch);
 400     ata_interrupt(ch);
 401 }
 402
 403 void
 404 ata_print_cable(device_t dev, u_int8_t *who)
 405 {
 406     device_printf(dev,
 407                   "DMA limited to UDMA33, %s found non-ATA66 cable\n", who);
 408 }
 409
 410 /*
 411  * misc support functions
 412  */
 413 void
 414 ata_default_registers(device_t dev)
 415 {
 416     struct ata_channel *ch = device_get_softc(dev);
 417
 418     /* fill in the defaults from whats setup already */
 419     ch->r_io[ATA_ERROR].res = ch->r_io[ATA_FEATURE].res;
 420     ch->r_io[ATA_ERROR].offset = ch->r_io[ATA_FEATURE].offset;
 421     ch->r_io[ATA_IREASON].res = ch->r_io[ATA_COUNT].res;
 422     ch->r_io[ATA_IREASON].offset = ch->r_io[ATA_COUNT].offset;
 423     ch->r_io[ATA_STATUS].res = ch->r_io[ATA_COMMAND].res;
 424     ch->r_io[ATA_STATUS].offset = ch->r_io[ATA_COMMAND].offset;
 425     ch->r_io[ATA_ALTSTAT].res = ch->r_io[ATA_CONTROL].res;
 426     ch->r_io[ATA_ALTSTAT].offset = ch->r_io[ATA_CONTROL].offset;
 427 }
 428
 429 void
 430 ata_udelay(int interval)
 431 {
 432     /* for now just use DELAY, the timer/sleep subsytems are not there yet */
 433     if (1 || interval < (1000000/hz) || ata_delayed_attach)
 434         DELAY(interval);
 435     else
 436         pause("ataslp", interval/(1000000/hz));
 437 }
 438
 439 const char *
 440 ata_cmd2str(struct ata_request *request)
 441 {
 442         static char buffer[20];
 443
 444         if (request->flags & ATA_R_ATAPI) {
 445                 switch (request->u.atapi.sense.key ?
 446                     request->u.atapi.saved_cmd : request->u.atapi.ccb[0]) {
 447                 case 0x00: return ("TEST_UNIT_READY");
 448                 case 0x01: return ("REZERO");
 449                 case 0x03: return ("REQUEST_SENSE");
 450                 case 0x04: return ("FORMAT");
 451                 case 0x08: return ("READ");
 452                 case 0x0a: return ("WRITE");
 453                 case 0x10: return ("WEOF");
 454                 case 0x11: return ("SPACE");
 455                 case 0x12: return ("INQUIRY");
 456                 case 0x15: return ("MODE_SELECT");
 457                 case 0x19: return ("ERASE");
 458                 case 0x1a: return ("MODE_SENSE");
 459                 case 0x1b: return ("START_STOP");
 460                 case 0x1e: return ("PREVENT_ALLOW");
 461                 case 0x23: return ("ATAPI_READ_FORMAT_CAPACITIES");
 462                 case 0x25: return ("READ_CAPACITY");
 463                 case 0x28: return ("READ_BIG");
 464                 case 0x2a: return ("WRITE_BIG");
 465                 case 0x2b: return ("LOCATE");
 466                 case 0x34: return ("READ_POSITION");
 467                 case 0x35: return ("SYNCHRONIZE_CACHE");
 468                 case 0x3b: return ("WRITE_BUFFER");
 469                 case 0x3c: return ("READ_BUFFER");
 470                 case 0x42: return ("READ_SUBCHANNEL");
 471                 case 0x43: return ("READ_TOC");
 472                 case 0x45: return ("PLAY_10");
 473                 case 0x47: return ("PLAY_MSF");
 474                 case 0x48: return ("PLAY_TRACK");
 475                 case 0x4b: return ("PAUSE");
 476                 case 0x51: return ("READ_DISK_INFO");
 477                 case 0x52: return ("READ_TRACK_INFO");
 478                 case 0x53: return ("RESERVE_TRACK");
 479                 case 0x54: return ("SEND_OPC_INFO");
 480                 case 0x55: return ("MODE_SELECT_BIG");
 481                 case 0x58: return ("REPAIR_TRACK");
 482                 case 0x59: return ("READ_MASTER_CUE");
 483                 case 0x5a: return ("MODE_SENSE_BIG");
 484                 case 0x5b: return ("CLOSE_TRACK/SESSION");
 485                 case 0x5c: return ("READ_BUFFER_CAPACITY");
 486                 case 0x5d: return ("SEND_CUE_SHEET");
 487                 case 0x96: return ("SERVICE_ACTION_IN");
 488                 case 0xa1: return ("BLANK_CMD");
 489                 case 0xa3: return ("SEND_KEY");
 490                 case 0xa4: return ("REPORT_KEY");
 491                 case 0xa5: return ("PLAY_12");
 492                 case 0xa6: return ("LOAD_UNLOAD");
 493                 case 0xad: return ("READ_DVD_STRUCTURE");
 494                 case 0xb4: return ("PLAY_CD");
 495                 case 0xbb: return ("SET_SPEED");
 496                 case 0xbd: return ("MECH_STATUS");
 497                 case 0xbe: return ("READ_CD");
 498                 case 0xff: return ("POLL_DSC");
 499                 }
 500         } else {
 501                 switch (request->u.ata.command) {
 502                 case 0x00: return ("NOP");
 503                 case 0x08: return ("DEVICE_RESET");
 504                 case 0x20: return ("READ");
 505                 case 0x24: return ("READ48");
 506                 case 0x25: return ("READ_DMA48");
 507                 case 0x26: return ("READ_DMA_QUEUED48");
 508                 case 0x27: return ("READ_NATIVE_MAX_ADDRESS48");
 509                 case 0x29: return ("READ_MUL48");
 510                 case 0x30: return ("WRITE");
 511                 case 0x34: return ("WRITE48");
 512                 case 0x35: return ("WRITE_DMA48");
 513                 case 0x36: return ("WRITE_DMA_QUEUED48");
 514                 case 0x37: return ("SET_MAX_ADDRESS48");
 515                 case 0x39: return ("WRITE_MUL48");
 516                 case 0x70: return ("SEEK");
 517                 case 0xa0: return ("PACKET_CMD");
 518                 case 0xa1: return ("ATAPI_IDENTIFY");
 519                 case 0xa2: return ("SERVICE");
 520                 case 0xb0: return ("SMART");
 521                 case 0xc0: return ("CFA ERASE");
 522                 case 0xc4: return ("READ_MUL");
 523                 case 0xc5: return ("WRITE_MUL");
 524                 case 0xc6: return ("SET_MULTI");
 525                 case 0xc7: return ("READ_DMA_QUEUED");
 526                 case 0xc8: return ("READ_DMA");
 527                 case 0xca: return ("WRITE_DMA");
 528                 case 0xcc: return ("WRITE_DMA_QUEUED");
 529                 case 0xe6: return ("SLEEP");
 530                 case 0xe7: return ("FLUSHCACHE");
 531                 case 0xea: return ("FLUSHCACHE48");
 532                 case 0xec: return ("ATA_IDENTIFY");
 533                 case 0xef:
 534                         switch (request->u.ata.feature) {
 535                         case 0x03: return ("SETFEATURES SET TRANSFER MODE");
 536                         case 0x02: return ("SETFEATURES ENABLE WCACHE");
 537                         case 0x82: return ("SETFEATURES DISABLE WCACHE");
 538                         case 0xaa: return ("SETFEATURES ENABLE RCACHE");
 539                         case 0x55: return ("SETFEATURES DISABLE RCACHE");
 540                         }
 541                         sprintf(buffer, "SETFEATURES 0x%02x",
 542                             request->u.ata.feature);
 543                         return (buffer);
 544                 case 0xf5: return ("SECURITY_FREE_LOCK");
 545                 case 0xf8: return ("READ_NATIVE_MAX_ADDRESS");
 546                 case 0xf9: return ("SET_MAX_ADDRESS");
 547                 }
 548         }
 549         sprintf(buffer, "unknown CMD (0x%02x)", request->u.ata.command);
 550         return (buffer);
 551 }
 552
 553 const char *
 554 ata_mode2str(int mode)
 555 {
 556     switch (mode) {
 557     case -1: return "UNSUPPORTED";
 558     case ATA_PIO0: return "PIO0";
 559     case ATA_PIO1: return "PIO1";
 560     case ATA_PIO2: return "PIO2";
 561     case ATA_PIO3: return "PIO3";
 562     case ATA_PIO4: return "PIO4";
 563     case ATA_WDMA0: return "WDMA0";
 564     case ATA_WDMA1: return "WDMA1";
 565     case ATA_WDMA2: return "WDMA2";
 566     case ATA_UDMA0: return "UDMA16";
 567     case ATA_UDMA1: return "UDMA25";
 568     case ATA_UDMA2: return "UDMA33";
 569     case ATA_UDMA3: return "UDMA40";
 570     case ATA_UDMA4: return "UDMA66";
 571     case ATA_UDMA5: return "UDMA100";
 572     case ATA_UDMA6: return "UDMA133";
 573     case ATA_SA150: return "SATA150";
 574     case ATA_SA300: return "SATA300";
 575     default:
 576         if (mode & ATA_DMA_MASK)
 577             return "BIOSDMA";
 578         else
 579             return "BIOSPIO";
 580     }
 581 }
 582
 583 static int
 584 ata_str2mode(const char *str)
 585 {
 586
 587         if (!strcasecmp(str, "PIO0")) return (ATA_PIO0);
 588         if (!strcasecmp(str, "PIO1")) return (ATA_PIO1);
 589         if (!strcasecmp(str, "PIO2")) return (ATA_PIO2);
 590         if (!strcasecmp(str, "PIO3")) return (ATA_PIO3);
 591         if (!strcasecmp(str, "PIO4")) return (ATA_PIO4);
 592         if (!strcasecmp(str, "WDMA0")) return (ATA_WDMA0);
 593         if (!strcasecmp(str, "WDMA1")) return (ATA_WDMA1);
 594         if (!strcasecmp(str, "WDMA2")) return (ATA_WDMA2);
 595         if (!strcasecmp(str, "UDMA0")) return (ATA_UDMA0);
 596         if (!strcasecmp(str, "UDMA16")) return (ATA_UDMA0);
 597         if (!strcasecmp(str, "UDMA1")) return (ATA_UDMA1);
 598         if (!strcasecmp(str, "UDMA25")) return (ATA_UDMA1);
 599         if (!strcasecmp(str, "UDMA2")) return (ATA_UDMA2);
 600         if (!strcasecmp(str, "UDMA33")) return (ATA_UDMA2);
 601         if (!strcasecmp(str, "UDMA3")) return (ATA_UDMA3);
 602         if (!strcasecmp(str, "UDMA44")) return (ATA_UDMA3);
 603         if (!strcasecmp(str, "UDMA4")) return (ATA_UDMA4);
 604         if (!strcasecmp(str, "UDMA66")) return (ATA_UDMA4);
 605         if (!strcasecmp(str, "UDMA5")) return (ATA_UDMA5);
 606         if (!strcasecmp(str, "UDMA100")) return (ATA_UDMA5);
 607         if (!strcasecmp(str, "UDMA6")) return (ATA_UDMA6);
 608         if (!strcasecmp(str, "UDMA133")) return (ATA_UDMA6);
 609         return (-1);
 610 }
 611
 612 int
 613 ata_atapi(device_t dev, int target)
 614 {
 615     struct ata_channel *ch = device_get_softc(dev);
 616
 617     return (ch->devices & (ATA_ATAPI_MASTER << target));
 618 }
 619
 620 void
 621 ata_timeout(struct ata_request *request)
 622 {
 623         struct ata_channel *ch;
 624
 625         ch = device_get_softc(request->parent);
 626         //request->flags |= ATA_R_DEBUG;
 627         ATA_DEBUG_RQ(request, "timeout");
 628
 629         /*
 630          * If we have an ATA_ACTIVE request running, we flag the request
 631          * ATA_R_TIMEOUT so ata_cam_end_transaction() will handle it correctly.
 632          * Also, NULL out the running request so we wont loose the race with
 633          * an eventual interrupt arriving late.
 634          */
 635         if (ch->state == ATA_ACTIVE) {
 636                 request->flags |= ATA_R_TIMEOUT;
 637                 if (ch->dma.unload)
 638                         ch->dma.unload(request);
 639                 ch->running = NULL;
 640                 ch->state = ATA_IDLE;
 641                 ata_cam_end_transaction(ch->dev, request);
 642         }
 643         mtx_unlock(&ch->state_mtx);
 644 }
 645
 646 static void
 647 ata_cam_begin_transaction(device_t dev, union ccb *ccb)
 648 {
 649         struct ata_channel *ch = device_get_softc(dev);
 650         struct ata_request *request;
 651
 652         if (!(request = ata_alloc_request())) {
 653                 device_printf(dev, "FAILURE - out of memory in start\n");
 654                 ccb->ccb_h.status = CAM_REQ_INVALID;
 655                 xpt_done(ccb);
 656                 return;
 657         }
 658         bzero(request, sizeof(*request));
 659
 660         /* setup request */
 661         request->dev = NULL;
 662         request->parent = dev;
 663         request->unit = ccb->ccb_h.target_id;
 664         if (ccb->ccb_h.func_code == XPT_ATA_IO) {
 665                 request->data = ccb->ataio.data_ptr;
 666                 request->bytecount = ccb->ataio.dxfer_len;
 667                 request->u.ata.command = ccb->ataio.cmd.command;
 668                 request->u.ata.feature = ((uint16_t)ccb->ataio.cmd.features_exp << 8) |
 669                                           (uint16_t)ccb->ataio.cmd.features;
 670                 request->u.ata.count = ((uint16_t)ccb->ataio.cmd.sector_count_exp << 8) |
 671                                         (uint16_t)ccb->ataio.cmd.sector_count;
 672                 if (ccb->ataio.cmd.flags & CAM_ATAIO_48BIT) {
 673                         request->flags |= ATA_R_48BIT;
 674                         request->u.ata.lba =
 675                                      ((uint64_t)ccb->ataio.cmd.lba_high_exp << 40) |
 676                                      ((uint64_t)ccb->ataio.cmd.lba_mid_exp << 32) |
 677                                      ((uint64_t)ccb->ataio.cmd.lba_low_exp << 24);
 678                 } else {
 679                         request->u.ata.lba =
 680                                      ((uint64_t)(ccb->ataio.cmd.device & 0x0f) << 24);
 681                 }
 682                 request->u.ata.lba |= ((uint64_t)ccb->ataio.cmd.lba_high << 16) |
 683                                       ((uint64_t)ccb->ataio.cmd.lba_mid << 8) |
 684                                        (uint64_t)ccb->ataio.cmd.lba_low;
 685                 if (ccb->ataio.cmd.flags & CAM_ATAIO_NEEDRESULT)
 686                         request->flags |= ATA_R_NEEDRESULT;
 687                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE &&
 688                     ccb->ataio.cmd.flags & CAM_ATAIO_DMA)
 689                         request->flags |= ATA_R_DMA;
 690                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 691                         request->flags |= ATA_R_READ;
 692                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
 693                         request->flags |= ATA_R_WRITE;
 694                 if (ccb->ataio.cmd.command == ATA_READ_MUL ||
 695                     ccb->ataio.cmd.command == ATA_READ_MUL48 ||
 696                     ccb->ataio.cmd.command == ATA_WRITE_MUL ||
 697                     ccb->ataio.cmd.command == ATA_WRITE_MUL48) {
 698                         request->transfersize = min(request->bytecount,
 699                             ch->curr[ccb->ccb_h.target_id].bytecount);
 700                 } else
 701                         request->transfersize = min(request->bytecount, 512);
 702         } else {
 703                 request->data = ccb->csio.data_ptr;
 704                 request->bytecount = ccb->csio.dxfer_len;
 705                 bcopy((ccb->ccb_h.flags & CAM_CDB_POINTER) ?
 706                     ccb->csio.cdb_io.cdb_ptr : ccb->csio.cdb_io.cdb_bytes,
 707                     request->u.atapi.ccb, ccb->csio.cdb_len);
 708                 request->flags |= ATA_R_ATAPI;
 709                 if (ch->curr[ccb->ccb_h.target_id].atapi == 16)
 710                         request->flags |= ATA_R_ATAPI16;
 711                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE &&
 712                     ch->curr[ccb->ccb_h.target_id].mode >= ATA_DMA)
 713                         request->flags |= ATA_R_DMA;
 714                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 715                         request->flags |= ATA_R_READ;
 716                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
 717                         request->flags |= ATA_R_WRITE;
 718                 request->transfersize = min(request->bytecount,
 719                     ch->curr[ccb->ccb_h.target_id].bytecount);
 720         }
 721         request->retries = 0;
 722         request->timeout = (ccb->ccb_h.timeout + 999) / 1000;
 723         callout_init_mtx(&request->callout, &ch->state_mtx, CALLOUT_RETURNUNLOCKED);
 724         request->ccb = ccb;
 725         request->flags |= ATA_R_DATA_IN_CCB;
 726
 727         ch->running = request;
 728         ch->state = ATA_ACTIVE;
 729         if (ch->hw.begin_transaction(request) == ATA_OP_FINISHED) {
 730             ch->running = NULL;
 731             ch->state = ATA_IDLE;
 732             ata_cam_end_transaction(dev, request);
 733             return;
 734         }
 735 }
 736
 737 static void
 738 ata_cam_request_sense(device_t dev, struct ata_request *request)
 739 {
 740         struct ata_channel *ch = device_get_softc(dev);
 741         union ccb *ccb = request->ccb;
 742
 743         ch->requestsense = 1;
 744
 745         bzero(request, sizeof(*request));
 746         request->dev = NULL;
 747         request->parent = dev;
 748         request->unit = ccb->ccb_h.target_id;
 749         request->data = (void *)&ccb->csio.sense_data;
 750         request->bytecount = ccb->csio.sense_len;
 751         request->u.atapi.ccb[0] = ATAPI_REQUEST_SENSE;
 752         request->u.atapi.ccb[4] = ccb->csio.sense_len;
 753         request->flags |= ATA_R_ATAPI;
 754         if (ch->curr[ccb->ccb_h.target_id].atapi == 16)
 755                 request->flags |= ATA_R_ATAPI16;
 756         if (ch->curr[ccb->ccb_h.target_id].mode >= ATA_DMA)
 757                 request->flags |= ATA_R_DMA;
 758         request->flags |= ATA_R_READ;
 759         request->transfersize = min(request->bytecount,
 760             ch->curr[ccb->ccb_h.target_id].bytecount);
 761         request->retries = 0;
 762         request->timeout = (ccb->ccb_h.timeout + 999) / 1000;
 763         callout_init_mtx(&request->callout, &ch->state_mtx, CALLOUT_RETURNUNLOCKED);
 764         request->ccb = ccb;
 765
 766         ch->running = request;
 767         ch->state = ATA_ACTIVE;
 768         if (ch->hw.begin_transaction(request) == ATA_OP_FINISHED) {
 769                 ch->running = NULL;
 770                 ch->state = ATA_IDLE;
 771                 ata_cam_end_transaction(dev, request);
 772                 return;
 773         }
 774 }
 775
 776 static void
 777 ata_cam_process_sense(device_t dev, struct ata_request *request)
 778 {
 779         struct ata_channel *ch = device_get_softc(dev);
 780         union ccb *ccb = request->ccb;
 781         int fatalerr = 0;
 782
 783         ch->requestsense = 0;
 784
 785         if (request->flags & ATA_R_TIMEOUT)
 786                 fatalerr = 1;
 787         if ((request->flags & ATA_R_TIMEOUT) == 0 &&
 788             (request->status & ATA_S_ERROR) == 0 &&
 789             request->result == 0) {
 790                 ccb->ccb_h.status |= CAM_AUTOSNS_VALID;
 791         } else {
 792                 ccb->ccb_h.status &= ~CAM_STATUS_MASK;
 793                 ccb->ccb_h.status |= CAM_AUTOSENSE_FAIL;
 794         }
 795
 796         ata_free_request(request);
 797         xpt_done(ccb);
 798         /* Do error recovery if needed. */
 799         if (fatalerr)
 800                 ata_reinit(dev);
 801 }
 802
 803 static void
 804 ata_cam_end_transaction(device_t dev, struct ata_request *request)
 805 {
 806         struct ata_channel *ch = device_get_softc(dev);
 807         union ccb *ccb = request->ccb;
 808         int fatalerr = 0;
 809
 810         if (ch->requestsense) {
 811                 ata_cam_process_sense(dev, request);
 812                 return;
 813         }
 814
 815         ccb->ccb_h.status &= ~CAM_STATUS_MASK;
 816         if (request->flags & ATA_R_TIMEOUT) {
 817                 xpt_freeze_simq(ch->sim, 1);
 818                 ccb->ccb_h.status &= ~CAM_STATUS_MASK;
 819                 ccb->ccb_h.status |= CAM_CMD_TIMEOUT | CAM_RELEASE_SIMQ;
 820                 fatalerr = 1;
 821         } else if (request->status & ATA_S_ERROR) {
 822                 if (ccb->ccb_h.func_code == XPT_ATA_IO) {
 823                         ccb->ccb_h.status |= CAM_ATA_STATUS_ERROR;
 824                 } else {
 825                         ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR;
 826                         ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND;
 827                 }
 828         } else if (request->result == ERESTART)
 829                 ccb->ccb_h.status |= CAM_REQUEUE_REQ;
 830         else if (request->result != 0)
 831                 ccb->ccb_h.status |= CAM_REQ_CMP_ERR;
 832         else
 833                 ccb->ccb_h.status |= CAM_REQ_CMP;
 834         if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP &&
 835             !(ccb->ccb_h.status & CAM_DEV_QFRZN)) {
 836                 xpt_freeze_devq(ccb->ccb_h.path, 1);
 837                 ccb->ccb_h.status |= CAM_DEV_QFRZN;
 838         }
 839         if (ccb->ccb_h.func_code == XPT_ATA_IO &&
 840             ((request->status & ATA_S_ERROR) ||
 841             (ccb->ataio.cmd.flags & CAM_ATAIO_NEEDRESULT))) {
 842                 struct ata_res *res = &ccb->ataio.res;
 843                 res->status = request->status;
 844                 res->error = request->error;
 845                 res->lba_low = request->u.ata.lba;
 846                 res->lba_mid = request->u.ata.lba >> 8;
 847                 res->lba_high = request->u.ata.lba >> 16;
 848                 res->device = request->u.ata.lba >> 24;
 849                 res->lba_low_exp = request->u.ata.lba >> 24;
 850                 res->lba_mid_exp = request->u.ata.lba >> 32;
 851                 res->lba_high_exp = request->u.ata.lba >> 40;
 852                 res->sector_count = request->u.ata.count;
 853                 res->sector_count_exp = request->u.ata.count >> 8;
 854         }
 855         if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
 856                 if (ccb->ccb_h.func_code == XPT_ATA_IO) {
 857                         ccb->ataio.resid =
 858                             ccb->ataio.dxfer_len - request->donecount;
 859                 } else {
 860                         ccb->csio.resid =
 861                             ccb->csio.dxfer_len - request->donecount;
 862                 }
 863         }
 864         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_SCSI_STATUS_ERROR &&
 865             (ccb->ccb_h.flags & CAM_DIS_AUTOSENSE) == 0)
 866                 ata_cam_request_sense(dev, request);
 867         else {
 868                 ata_free_request(request);
 869                 xpt_done(ccb);
 870         }
 871         /* Do error recovery if needed. */
 872         if (fatalerr)
 873                 ata_reinit(dev);
 874 }
 875
 876 static int
 877 ata_check_ids(device_t dev, union ccb *ccb)
 878 {
 879         struct ata_channel *ch = device_get_softc(dev);
 880
 881         if (ccb->ccb_h.target_id > ((ch->flags & ATA_NO_SLAVE) ? 0 : 1)) {
 882                 ccb->ccb_h.status = CAM_TID_INVALID;
 883                 xpt_done(ccb);
 884                 return (-1);
 885         }
 886         if (ccb->ccb_h.target_lun != 0) {
 887                 ccb->ccb_h.status = CAM_LUN_INVALID;
 888                 xpt_done(ccb);
 889                 return (-1);
 890         }
 891         return (0);
 892 }
 893
 894 static void
 895 ataaction(struct cam_sim *sim, union ccb *ccb)
 896 {
 897         device_t dev, parent;
 898         struct ata_channel *ch;
 899
 900         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ataaction func_code=%x\n",
 901             ccb->ccb_h.func_code));
 902
 903         ch = (struct ata_channel *)cam_sim_softc(sim);
 904         dev = ch->dev;
 905         switch (ccb->ccb_h.func_code) {
 906         /* Common cases first */
 907         case XPT_ATA_IO:        /* Execute the requested I/O operation */
 908         case XPT_SCSI_IO:
 909                 if (ata_check_ids(dev, ccb))
 910                         return;
 911                 if ((ch->devices & ((ATA_ATA_MASTER | ATA_ATAPI_MASTER)
 912                     << ccb->ccb_h.target_id)) == 0) {
 913                         ccb->ccb_h.status = CAM_SEL_TIMEOUT;
 914                         break;
 915                 }
 916                 if (ch->running)
 917                         device_printf(dev, "already running!\n");
 918                 if (ccb->ccb_h.func_code == XPT_ATA_IO &&
 919                     (ccb->ataio.cmd.flags & CAM_ATAIO_CONTROL) &&
 920                     (ccb->ataio.cmd.control & ATA_A_RESET)) {
 921                         struct ata_res *res = &ccb->ataio.res;
 922
 923                         bzero(res, sizeof(*res));
 924                         if (ch->devices & (ATA_ATA_MASTER << ccb->ccb_h.target_id)) {
 925                                 res->lba_high = 0;
 926                                 res->lba_mid = 0;
 927                         } else {
 928                                 res->lba_high = 0xeb;
 929                                 res->lba_mid = 0x14;
 930                         }
 931                         ccb->ccb_h.status = CAM_REQ_CMP;
 932                         break;
 933                 }
 934                 ata_cam_begin_transaction(dev, ccb);
 935                 return;
 936         case XPT_EN_LUN:                /* Enable LUN as a target */
 937         case XPT_TARGET_IO:             /* Execute target I/O request */
 938         case XPT_ACCEPT_TARGET_IO:      /* Accept Host Target Mode CDB */
 939         case XPT_CONT_TARGET_IO:        /* Continue Host Target I/O Connection*/
 940         case XPT_ABORT:                 /* Abort the specified CCB */
 941                 /* XXX Implement */
 942                 ccb->ccb_h.status = CAM_REQ_INVALID;
 943                 break;
 944         case XPT_SET_TRAN_SETTINGS:
 945         {
 946                 struct  ccb_trans_settings *cts = &ccb->cts;
 947                 struct  ata_cam_device *d;
 948
 949                 if (ata_check_ids(dev, ccb))
 950                         return;
 951                 if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
 952                         d = &ch->curr[ccb->ccb_h.target_id];
 953                 else
 954                         d = &ch->user[ccb->ccb_h.target_id];
 955                 if (ch->flags & ATA_SATA) {
 956                         if (cts->xport_specific.sata.valid & CTS_SATA_VALID_REVISION)
 957                                 d->revision = cts->xport_specific.sata.revision;
 958                         if (cts->xport_specific.sata.valid & CTS_SATA_VALID_MODE) {
 959                                 if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
 960                                         d->mode = ATA_SETMODE(ch->dev,
 961                                             ccb->ccb_h.target_id,
 962                                             cts->xport_specific.sata.mode);
 963                                 } else
 964                                         d->mode = cts->xport_specific.sata.mode;
 965                         }
 966                         if (cts->xport_specific.sata.valid & CTS_SATA_VALID_BYTECOUNT)
 967                                 d->bytecount = min(8192, cts->xport_specific.sata.bytecount);
 968                         if (cts->xport_specific.sata.valid & CTS_SATA_VALID_ATAPI)
 969                                 d->atapi = cts->xport_specific.sata.atapi;
 970                         if (cts->xport_specific.sata.valid & CTS_SATA_VALID_CAPS)
 971                                 d->caps = cts->xport_specific.sata.caps;
 972                 } else {
 973                         if (cts->xport_specific.ata.valid & CTS_ATA_VALID_MODE) {
 974                                 if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
 975                                         d->mode = ATA_SETMODE(ch->dev,
 976                                             ccb->ccb_h.target_id,
 977                                             cts->xport_specific.ata.mode);
 978                                 } else
 979                                         d->mode = cts->xport_specific.ata.mode;
 980                         }
 981                         if (cts->xport_specific.ata.valid & CTS_ATA_VALID_BYTECOUNT)
 982                                 d->bytecount = cts->xport_specific.ata.bytecount;
 983                         if (cts->xport_specific.ata.valid & CTS_ATA_VALID_ATAPI)
 984                                 d->atapi = cts->xport_specific.ata.atapi;
 985                         if (cts->xport_specific.ata.valid & CTS_ATA_VALID_CAPS)
 986                                 d->caps = cts->xport_specific.ata.caps;
 987                 }
 988                 ccb->ccb_h.status = CAM_REQ_CMP;
 989                 break;
 990         }
 991         case XPT_GET_TRAN_SETTINGS:
 992         {
 993                 struct  ccb_trans_settings *cts = &ccb->cts;
 994                 struct  ata_cam_device *d;
 995
 996                 if (ata_check_ids(dev, ccb))
 997                         return;
 998                 if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
 999                         d = &ch->curr[ccb->ccb_h.target_id];
1000                 else
1001                         d = &ch->user[ccb->ccb_h.target_id];
1002                 cts->protocol = PROTO_UNSPECIFIED;
1003                 cts->protocol_version = PROTO_VERSION_UNSPECIFIED;
1004                 if (ch->flags & ATA_SATA) {
1005                         cts->transport = XPORT_SATA;
1006                         cts->transport_version = XPORT_VERSION_UNSPECIFIED;
1007                         cts->xport_specific.sata.valid = 0;
1008                         cts->xport_specific.sata.mode = d->mode;
1009                         cts->xport_specific.sata.valid |= CTS_SATA_VALID_MODE;
1010                         cts->xport_specific.sata.bytecount = d->bytecount;
1011                         cts->xport_specific.sata.valid |= CTS_SATA_VALID_BYTECOUNT;
1012                         if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
1013                                 cts->xport_specific.sata.revision =
1014                                     ATA_GETREV(dev, ccb->ccb_h.target_id);
1015                                 if (cts->xport_specific.sata.revision != 0xff) {
1016                                         cts->xport_specific.sata.valid |=
1017                                             CTS_SATA_VALID_REVISION;
1018                                 }
1019                                 cts->xport_specific.sata.caps =
1020                                     d->caps & CTS_SATA_CAPS_D;
1021                                 if (ch->pm_level) {
1022                                         cts->xport_specific.sata.caps |=
1023                                             CTS_SATA_CAPS_H_PMREQ;
1024                                 }
1025                                 cts->xport_specific.sata.caps &=
1026                                     ch->user[ccb->ccb_h.target_id].caps;
1027                         } else {
1028                                 cts->xport_specific.sata.revision = d->revision;
1029                                 cts->xport_specific.sata.valid |= CTS_SATA_VALID_REVISION;
1030                                 cts->xport_specific.sata.caps = d->caps;
1031                         }
1032                         cts->xport_specific.sata.valid |= CTS_SATA_VALID_CAPS;
1033                         cts->xport_specific.sata.atapi = d->atapi;
1034                         cts->xport_specific.sata.valid |= CTS_SATA_VALID_ATAPI;
1035                 } else {
1036                         cts->transport = XPORT_ATA;
1037                         cts->transport_version = XPORT_VERSION_UNSPECIFIED;
1038                         cts->xport_specific.ata.valid = 0;
1039                         cts->xport_specific.ata.mode = d->mode;
1040                         cts->xport_specific.ata.valid |= CTS_ATA_VALID_MODE;
1041                         cts->xport_specific.ata.bytecount = d->bytecount;
1042                         cts->xport_specific.ata.valid |= CTS_ATA_VALID_BYTECOUNT;
1043                         if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
1044                                 cts->xport_specific.ata.caps =
1045                                     d->caps & CTS_ATA_CAPS_D;
1046                                 if (!(ch->flags & ATA_NO_48BIT_DMA))
1047                                         cts->xport_specific.ata.caps |=
1048                                             CTS_ATA_CAPS_H_DMA48;
1049                                 cts->xport_specific.ata.caps &=
1050                                     ch->user[ccb->ccb_h.target_id].caps;
1051                         } else
1052                                 cts->xport_specific.ata.caps = d->caps;
1053                         cts->xport_specific.ata.valid |= CTS_ATA_VALID_CAPS;
1054                         cts->xport_specific.ata.atapi = d->atapi;
1055                         cts->xport_specific.ata.valid |= CTS_ATA_VALID_ATAPI;
1056                 }
1057                 ccb->ccb_h.status = CAM_REQ_CMP;
1058                 break;
1059         }
1060         case XPT_RESET_BUS:             /* Reset the specified SCSI bus */
1061         case XPT_RESET_DEV:     /* Bus Device Reset the specified SCSI device */
1062                 ata_reinit(dev);
1063                 ccb->ccb_h.status = CAM_REQ_CMP;
1064                 break;
1065         case XPT_TERM_IO:               /* Terminate the I/O process */
1066                 /* XXX Implement */
1067                 ccb->ccb_h.status = CAM_REQ_INVALID;
1068                 break;
1069         case XPT_PATH_INQ:              /* Path routing inquiry */
1070         {
1071                 struct ccb_pathinq *cpi = &ccb->cpi;
1072
1073                 parent = device_get_parent(dev);
1074                 cpi->version_num = 1; /* XXX??? */
1075                 cpi->hba_inquiry = PI_SDTR_ABLE;
1076                 cpi->target_sprt = 0;
1077                 cpi->hba_misc = PIM_SEQSCAN;
1078                 cpi->hba_eng_cnt = 0;
1079                 if (ch->flags & ATA_NO_SLAVE)
1080                         cpi->max_target = 0;
1081                 else
1082                         cpi->max_target = 1;
1083                 cpi->max_lun = 0;
1084                 cpi->initiator_id = 0;
1085                 cpi->bus_id = cam_sim_bus(sim);
1086                 if (ch->flags & ATA_SATA)
1087                         cpi->base_transfer_speed = 150000;
1088                 else
1089                         cpi->base_transfer_speed = 3300;
1090                 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
1091                 strncpy(cpi->hba_vid, "ATA", HBA_IDLEN);
1092                 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
1093                 cpi->unit_number = cam_sim_unit(sim);
1094                 if (ch->flags & ATA_SATA)
1095                         cpi->transport = XPORT_SATA;
1096                 else
1097                         cpi->transport = XPORT_ATA;
1098                 cpi->transport_version = XPORT_VERSION_UNSPECIFIED;
1099                 cpi->protocol = PROTO_ATA;
1100                 cpi->protocol_version = PROTO_VERSION_UNSPECIFIED;
1101                 cpi->maxio = ch->dma.max_iosize ? ch->dma.max_iosize : DFLTPHYS;
1102                 if (device_get_devclass(device_get_parent(parent)) ==
1103                     devclass_find("pci")) {
1104                         cpi->hba_vendor = pci_get_vendor(parent);
1105                         cpi->hba_device = pci_get_device(parent);
1106                         cpi->hba_subvendor = pci_get_subvendor(parent);
1107                         cpi->hba_subdevice = pci_get_subdevice(parent);
1108                 }
1109                 cpi->ccb_h.status = CAM_REQ_CMP;
1110                 break;
1111         }
1112         default:
1113                 ccb->ccb_h.status = CAM_REQ_INVALID;
1114                 break;
1115         }
1116         xpt_done(ccb);
1117 }
1118
1119 static void
1120 atapoll(struct cam_sim *sim)
1121 {
1122         struct ata_channel *ch = (struct ata_channel *)cam_sim_softc(sim);
1123
1124         ata_interrupt_locked(ch);
1125 }
1126
1127 /*
1128  * module handeling
1129  */
1130 static int
1131 ata_module_event_handler(module_t mod, int what, void *arg)
1132 {
1133
1134     switch (what) {
1135     case MOD_LOAD:
1136         return 0;
1137
1138     case MOD_UNLOAD:
1139         return 0;
1140
1141     default:
1142         return EOPNOTSUPP;
1143     }
1144 }
1145
1146 static moduledata_t ata_moduledata = { "ata", ata_module_event_handler, NULL };
1147 DECLARE_MODULE(ata, ata_moduledata, SI_SUB_CONFIGURE, SI_ORDER_SECOND);
1148 MODULE_VERSION(ata, 1);
1149 MODULE_DEPEND(ata, cam, 1, 1, 1);
1150
1151 static void
1152 ata_init(void)
1153 {
1154     ata_request_zone = uma_zcreate("ata_request", sizeof(struct ata_request),
1155                                    NULL, NULL, NULL, NULL, 0, 0);
1156 }
1157 SYSINIT(ata_register, SI_SUB_DRIVERS, SI_ORDER_SECOND, ata_init, NULL);
1158
1159 static void
1160 ata_uninit(void)
1161 {
1162     uma_zdestroy(ata_request_zone);
1163 }
1164 SYSUNINIT(ata_unregister, SI_SUB_DRIVERS, SI_ORDER_SECOND, ata_uninit, NULL);