sys/dev/disk/nata/ata-pci.c

   1 /*-
   2  * Copyright (c) 1998 - 2006 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  * $FreeBSD: src/sys/dev/ata/ata-pci.c,v 1.121 2007/02/23 12:18:33 piso Exp $
  27  * $DragonFly: src/sys/dev/disk/nata/ata-pci.c,v 1.10 2008/03/28 11:03:44 sephe Exp $
  28  */
  29
  30 #include "opt_ata.h"
  31
  32 #include <sys/param.h>
  33 #include <sys/bus.h>
  34 #include <sys/bus_resource.h>
  35 #include <sys/malloc.h>
  36 #include <sys/module.h>
  37 #include <sys/nata.h>
  38 #include <sys/rman.h>
  39 #include <sys/systm.h>
  40
  41 #include <bus/pci/pcireg.h>
  42 #include <bus/pci/pcivar.h>
  43
  44 #include "ata-all.h"
  45 #include "ata-pci.h"
  46 #include "ata_if.h"
  47
  48 /* local vars */
  49 static MALLOC_DEFINE(M_ATAPCI, "ata_pci", "ATA driver PCI");
  50
  51 /* misc defines */
  52 #define IOMASK                  0xfffffffc
  53 #define ATA_PROBE_OK            -10
  54
  55 static const struct none_atapci {
  56         uint16_t        vendor;
  57         uint16_t        device;
  58         uint16_t        subvendor;
  59         uint16_t        subdevice;
  60 } none_atapci_table[] = {
  61         /* Appears on Intel PRO/1000 PM */
  62         { ATA_INTEL_ID, 0x108d, ATA_INTEL_ID, 0x0000 },
  63         { 0xffff, 0, 0, 0 }
  64 };
  65
  66 int
  67 ata_legacy(device_t dev)
  68 {
  69     return (((pci_read_config(dev, PCIR_PROGIF, 1)&PCIP_STORAGE_IDE_MASTERDEV)&&
  70             ((pci_read_config(dev, PCIR_PROGIF, 1) &
  71               (PCIP_STORAGE_IDE_MODEPRIM | PCIP_STORAGE_IDE_MODESEC)) !=
  72              (PCIP_STORAGE_IDE_MODEPRIM | PCIP_STORAGE_IDE_MODESEC))) ||
  73             (!pci_read_config(dev, PCIR_BAR(0), 4) &&
  74              !pci_read_config(dev, PCIR_BAR(1), 4) &&
  75              !pci_read_config(dev, PCIR_BAR(2), 4) &&
  76              !pci_read_config(dev, PCIR_BAR(3), 4) &&
  77              !pci_read_config(dev, PCIR_BAR(5), 4)));
  78 }
  79
  80 int
  81 ata_pci_probe(device_t dev)
  82 {
  83     if (pci_get_class(dev) != PCIC_STORAGE)
  84         return ENXIO;
  85
  86     /* if this is an AHCI chipset grab it */
  87     if (pci_get_subclass(dev) == PCIS_STORAGE_SATA) {
  88         if (!ata_ahci_ident(dev))
  89             return ATA_PROBE_OK;
  90     }
  91
  92     /* run through the vendor specific drivers */
  93     switch (pci_get_vendor(dev)) {
  94     case ATA_ACARD_ID:
  95         if (!ata_acard_ident(dev))
  96             return ATA_PROBE_OK;
  97         break;
  98     case ATA_ACER_LABS_ID:
  99         if (!ata_ali_ident(dev))
 100             return ATA_PROBE_OK;
 101         break;
 102     case ATA_AMD_ID:
 103         if (!ata_amd_ident(dev))
 104             return ATA_PROBE_OK;
 105         break;
 106     case ATA_ATI_ID:
 107         if (!ata_ati_ident(dev))
 108             return ATA_PROBE_OK;
 109         break;
 110     case ATA_CYRIX_ID:
 111         if (!ata_cyrix_ident(dev))
 112             return ATA_PROBE_OK;
 113         break;
 114     case ATA_CYPRESS_ID:
 115         if (!ata_cypress_ident(dev))
 116             return ATA_PROBE_OK;
 117         break;
 118     case ATA_HIGHPOINT_ID:
 119         if (!ata_highpoint_ident(dev))
 120             return ATA_PROBE_OK;
 121         break;
 122     case ATA_INTEL_ID:
 123         if (!ata_intel_ident(dev))
 124             return ATA_PROBE_OK;
 125         break;
 126     case ATA_ITE_ID:
 127         if (!ata_ite_ident(dev))
 128             return ATA_PROBE_OK;
 129         break;
 130     case ATA_JMICRON_ID:
 131         if (!ata_jmicron_ident(dev))
 132             return ATA_PROBE_OK;
 133         break;
 134     case ATA_MARVELL_ID:
 135         if (!ata_marvell_ident(dev))
 136             return ATA_PROBE_OK;
 137         break;
 138     case ATA_NATIONAL_ID:
 139         if (!ata_national_ident(dev))
 140             return ATA_PROBE_OK;
 141         break;
 142     case ATA_NETCELL_ID:
 143         if (!ata_netcell_ident(dev))
 144             return ATA_PROBE_OK;
 145         break;
 146     case ATA_NVIDIA_ID:
 147         if (!ata_nvidia_ident(dev))
 148             return ATA_PROBE_OK;
 149         break;
 150     case ATA_PROMISE_ID:
 151         if (!ata_promise_ident(dev))
 152             return ATA_PROBE_OK;
 153         break;
 154     case ATA_SERVERWORKS_ID:
 155         if (!ata_serverworks_ident(dev))
 156             return ATA_PROBE_OK;
 157         break;
 158     case ATA_SILICON_IMAGE_ID:
 159         if (!ata_sii_ident(dev))
 160             return ATA_PROBE_OK;
 161         break;
 162     case ATA_SIS_ID:
 163         if (!ata_sis_ident(dev))
 164             return ATA_PROBE_OK;
 165         break;
 166     case ATA_VIA_ID:
 167         if (!ata_via_ident(dev))
 168             return ATA_PROBE_OK;
 169         break;
 170     case ATA_CENATEK_ID:
 171         if (pci_get_devid(dev) == ATA_CENATEK_ROCKET) {
 172             ata_generic_ident(dev);
 173             device_set_desc(dev, "Cenatek Rocket Drive controller");
 174             return ATA_PROBE_OK;
 175         }
 176         break;
 177     case ATA_MICRON_ID:
 178         if (pci_get_devid(dev) == ATA_MICRON_RZ1000 ||
 179             pci_get_devid(dev) == ATA_MICRON_RZ1001) {
 180             ata_generic_ident(dev);
 181             device_set_desc(dev,
 182                 "RZ 100? ATA controller !WARNING! data loss/corruption risk");
 183             return ATA_PROBE_OK;
 184         }
 185         break;
 186     }
 187
 188     /* unknown chipset, try generic AHCI or DMA if it seems possible */
 189     if (pci_get_subclass(dev) == PCIS_STORAGE_IDE) {
 190         uint16_t vendor, device, subvendor, subdevice;
 191         const struct none_atapci *e;
 192
 193         vendor = pci_get_vendor(dev);
 194         device = pci_get_device(dev);
 195         subvendor = pci_get_subvendor(dev);
 196         subdevice = pci_get_subdevice(dev);
 197         for (e = none_atapci_table; e->vendor != 0xffff; ++e) {
 198             if (e->vendor == vendor && e->device == device &&
 199                 e->subvendor == subvendor && e->subdevice == subdevice)
 200                 return ENXIO;
 201         }
 202
 203         if (!ata_generic_ident(dev))
 204             return ATA_PROBE_OK;
 205     }
 206     return ENXIO;
 207 }
 208
 209 int
 210 ata_pci_attach(device_t dev)
 211 {
 212     struct ata_pci_controller *ctlr = device_get_softc(dev);
 213     u_int32_t cmd;
 214     int unit;
 215
 216     /* do chipset specific setups only needed once */
 217     if (ata_legacy(dev) || pci_read_config(dev, PCIR_BAR(2), 4) & IOMASK)
 218         ctlr->channels = 2;
 219     else
 220         ctlr->channels = 1;
 221     ctlr->allocate = ata_pci_allocate;
 222     ctlr->dev = dev;
 223
 224     /* if needed try to enable busmastering */
 225     cmd = pci_read_config(dev, PCIR_COMMAND, 2);
 226     if (!(cmd & PCIM_CMD_BUSMASTEREN)) {
 227         pci_write_config(dev, PCIR_COMMAND, cmd | PCIM_CMD_BUSMASTEREN, 2);
 228         cmd = pci_read_config(dev, PCIR_COMMAND, 2);
 229     }
 230
 231     /* if busmastering mode "stuck" use it */
 232     if ((cmd & PCIM_CMD_BUSMASTEREN) == PCIM_CMD_BUSMASTEREN) {
 233         ctlr->r_type1 = SYS_RES_IOPORT;
 234         ctlr->r_rid1 = ATA_BMADDR_RID;
 235         ctlr->r_res1 = bus_alloc_resource_any(dev, ctlr->r_type1, &ctlr->r_rid1,
 236                                               RF_ACTIVE);
 237         /* Only set a dma init function if the device actually supports it. */
 238         ctlr->dmainit = ata_pci_dmainit;
 239     }
 240
 241     if (ctlr->chipinit(dev))
 242         return ENXIO;
 243
 244     /* attach all channels on this controller */
 245     for (unit = 0; unit < ctlr->channels; unit++) {
 246         int freeunit = 2;
 247         if ((unit == 0 || unit == 1) && ata_legacy(dev)) {
 248             device_add_child(dev, "ata", unit);
 249             continue;
 250         }
 251         /* XXX TGEN devclass_find_free_unit() implementation */
 252         while (freeunit < devclass_get_maxunit(ata_devclass) &&
 253                devclass_get_device(ata_devclass, freeunit) != NULL)
 254             freeunit++;
 255         device_add_child(dev, "ata", freeunit);
 256     }
 257     bus_generic_attach(dev);
 258     return 0;
 259 }
 260
 261 int
 262 ata_pci_detach(device_t dev)
 263 {
 264     struct ata_pci_controller *ctlr = device_get_softc(dev);
 265     device_t *children;
 266     int nchildren, i;
 267
 268     /* detach & delete all children */
 269     if (!device_get_children(dev, &children, &nchildren)) {
 270         for (i = 0; i < nchildren; i++)
 271             device_delete_child(dev, children[i]);
 272         kfree(children, M_TEMP);
 273     }
 274
 275     if (ctlr->r_irq) {
 276         bus_teardown_intr(dev, ctlr->r_irq, ctlr->handle);
 277         bus_release_resource(dev, SYS_RES_IRQ, ATA_IRQ_RID, ctlr->r_irq);
 278     }
 279     if (ctlr->r_res2)
 280         bus_release_resource(dev, ctlr->r_type2, ctlr->r_rid2, ctlr->r_res2);
 281     if (ctlr->r_res1)
 282         bus_release_resource(dev, ctlr->r_type1, ctlr->r_rid1, ctlr->r_res1);
 283
 284     return 0;
 285 }
 286
 287 struct resource *
 288 ata_pci_alloc_resource(device_t dev, device_t child, int type, int *rid,
 289                        u_long start, u_long end, u_long count, u_int flags)
 290 {
 291     struct ata_pci_controller *controller = device_get_softc(dev);
 292     int unit = ((struct ata_channel *)device_get_softc(child))->unit;
 293     struct resource *res = NULL;
 294     int myrid;
 295
 296     if (type == SYS_RES_IOPORT) {
 297         switch (*rid) {
 298         case ATA_IOADDR_RID:
 299             if (ata_legacy(dev)) {
 300                 start = (unit ? ATA_SECONDARY : ATA_PRIMARY);
 301                 count = ATA_IOSIZE;
 302                 end = start + count - 1;
 303             }
 304             myrid = PCIR_BAR(0) + (unit << 3);
 305             res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev,
 306                                      SYS_RES_IOPORT, &myrid,
 307                                      start, end, count, flags);
 308             break;
 309
 310         case ATA_CTLADDR_RID:
 311             if (ata_legacy(dev)) {
 312                 start = (unit ? ATA_SECONDARY : ATA_PRIMARY) + ATA_CTLOFFSET;
 313                 count = ATA_CTLIOSIZE;
 314                 end = start + count - 1;
 315             }
 316             myrid = PCIR_BAR(1) + (unit << 3);
 317             res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev,
 318                                      SYS_RES_IOPORT, &myrid,
 319                                      start, end, count, flags);
 320             break;
 321         }
 322     }
 323     if (type == SYS_RES_IRQ && *rid == ATA_IRQ_RID) {
 324         if (ata_legacy(dev)) {
 325             int irq = (unit == 0 ? 14 : 15);
 326
 327             res = BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
 328                                      SYS_RES_IRQ, rid, irq, irq, 1, flags);
 329         }
 330         else
 331             res = controller->r_irq;
 332     }
 333     return res;
 334 }
 335
 336 int
 337 ata_pci_release_resource(device_t dev, device_t child, int type, int rid,
 338                          struct resource *r)
 339 {
 340     int unit = ((struct ata_channel *)device_get_softc(child))->unit;
 341
 342     if (type == SYS_RES_IOPORT) {
 343         switch (rid) {
 344         case ATA_IOADDR_RID:
 345             return BUS_RELEASE_RESOURCE(device_get_parent(dev), dev,
 346                                         SYS_RES_IOPORT,
 347                                         PCIR_BAR(0) + (unit << 3), r);
 348             break;
 349
 350         case ATA_CTLADDR_RID:
 351             return BUS_RELEASE_RESOURCE(device_get_parent(dev), dev,
 352                                         SYS_RES_IOPORT,
 353                                         PCIR_BAR(1) + (unit << 3), r);
 354             break;
 355         default:
 356             return ENOENT;
 357         }
 358     }
 359     if (type == SYS_RES_IRQ) {
 360         if (rid != ATA_IRQ_RID)
 361             return ENOENT;
 362
 363         if (ata_legacy(dev)) {
 364             return BUS_RELEASE_RESOURCE(device_get_parent(dev), child,
 365                                         SYS_RES_IRQ, rid, r);
 366         }
 367         else
 368             return 0;
 369     }
 370     return EINVAL;
 371 }
 372
 373 int
 374 ata_pci_setup_intr(device_t dev, device_t child, struct resource *irq,
 375                    int flags, driver_intr_t *function, void *argument,
 376                    void **cookiep)
 377 {
 378     if (ata_legacy(dev)) {
 379         return BUS_SETUP_INTR(device_get_parent(dev), child, irq,
 380                               flags, function, argument, cookiep, NULL);
 381     }
 382     else {
 383         struct ata_pci_controller *controller = device_get_softc(dev);
 384         int unit = ((struct ata_channel *)device_get_softc(child))->unit;
 385
 386         controller->interrupt[unit].function = function;
 387         controller->interrupt[unit].argument = argument;
 388         *cookiep = controller;
 389         return 0;
 390     }
 391 }
 392
 393 int
 394 ata_pci_teardown_intr(device_t dev, device_t child, struct resource *irq,
 395                       void *cookie)
 396 {
 397     if (ata_legacy(dev)) {
 398         return BUS_TEARDOWN_INTR(device_get_parent(dev), child, irq, cookie);
 399     }
 400     else {
 401         struct ata_pci_controller *controller = device_get_softc(dev);
 402         int unit = ((struct ata_channel *)device_get_softc(child))->unit;
 403
 404         controller->interrupt[unit].function = NULL;
 405         controller->interrupt[unit].argument = NULL;
 406         return 0;
 407     }
 408 }
 409
 410 int
 411 ata_pci_allocate(device_t dev)
 412 {
 413     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
 414     struct ata_channel *ch = device_get_softc(dev);
 415     struct resource *io = NULL, *ctlio = NULL;
 416     int i, rid;
 417
 418     rid = ATA_IOADDR_RID;
 419     if (!(io = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE)))
 420         return ENXIO;
 421
 422     rid = ATA_CTLADDR_RID;
 423     if (!(ctlio = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,RF_ACTIVE))){
 424         bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, io);
 425         return ENXIO;
 426     }
 427
 428     for (i = ATA_DATA; i <= ATA_COMMAND; i ++) {
 429         ch->r_io[i].res = io;
 430         ch->r_io[i].offset = i;
 431     }
 432     ch->r_io[ATA_CONTROL].res = ctlio;
 433     ch->r_io[ATA_CONTROL].offset = ata_legacy(device_get_parent(dev)) ? 0 : 2;
 434     ch->r_io[ATA_IDX_ADDR].res = io;
 435     ata_default_registers(dev);
 436     if (ctlr->r_res1) {
 437         for (i = ATA_BMCMD_PORT; i <= ATA_BMDTP_PORT; i++) {
 438             ch->r_io[i].res = ctlr->r_res1;
 439             ch->r_io[i].offset = (i - ATA_BMCMD_PORT) + (ch->unit*ATA_BMIOSIZE);
 440         }
 441     }
 442
 443     ata_pci_hw(dev);
 444     return 0;
 445 }
 446
 447 void
 448 ata_pci_hw(device_t dev)
 449 {
 450     struct ata_channel *ch = device_get_softc(dev);
 451
 452     ata_generic_hw(dev);
 453     ch->hw.status = ata_pci_status;
 454 }
 455
 456 int
 457 ata_pci_status(device_t dev)
 458 {
 459     struct ata_channel *ch = device_get_softc(dev);
 460
 461     if ((dumping || !ata_legacy(device_get_parent(dev))) &&
 462         ch->dma && ((ch->flags & ATA_ALWAYS_DMASTAT) ||
 463                     (ch->dma->flags & ATA_DMA_ACTIVE))) {
 464         int bmstat = ATA_IDX_INB(ch, ATA_BMSTAT_PORT) & ATA_BMSTAT_MASK;
 465
 466         if ((bmstat & (ATA_BMSTAT_ACTIVE | ATA_BMSTAT_INTERRUPT)) !=
 467             ATA_BMSTAT_INTERRUPT)
 468             return 0;
 469         ATA_IDX_OUTB(ch, ATA_BMSTAT_PORT, bmstat & ~ATA_BMSTAT_ERROR);
 470         DELAY(1);
 471     }
 472     if (ATA_IDX_INB(ch, ATA_ALTSTAT) & ATA_S_BUSY) {
 473         DELAY(100);
 474         if (ATA_IDX_INB(ch, ATA_ALTSTAT) & ATA_S_BUSY)
 475             return 0;
 476     }
 477     return 1;
 478 }
 479
 480 static int
 481 ata_pci_dmastart(device_t dev)
 482 {
 483     struct ata_channel *ch = device_get_softc(device_get_parent(dev));
 484     u_int8_t val;
 485
 486     ATA_IDX_OUTB(ch, ATA_BMSTAT_PORT, (ATA_IDX_INB(ch, ATA_BMSTAT_PORT) |
 487                  (ATA_BMSTAT_INTERRUPT | ATA_BMSTAT_ERROR)));
 488     ATA_IDX_OUTL(ch, ATA_BMDTP_PORT, ch->dma->sg_bus);
 489     ch->dma->flags |= ATA_DMA_ACTIVE;
 490     val = ATA_IDX_INB(ch, ATA_BMCMD_PORT);
 491     if (ch->dma->flags & ATA_DMA_READ)
 492         val |= ATA_BMCMD_WRITE_READ;
 493     else
 494         val &= ~ATA_BMCMD_WRITE_READ;
 495     ATA_IDX_OUTB(ch, ATA_BMCMD_PORT, val);
 496
 497     /*
 498      * Issue the start command separately from configuration setup,
 499      * in case the hardware latches portions of the configuration.
 500      */
 501     ATA_IDX_OUTB(ch, ATA_BMCMD_PORT, val | ATA_BMCMD_START_STOP);
 502
 503     return 0;
 504 }
 505
 506 static int
 507 ata_pci_dmastop(device_t dev)
 508 {
 509     struct ata_channel *ch = device_get_softc(device_get_parent(dev));
 510     int error;
 511
 512     ATA_IDX_OUTB(ch, ATA_BMCMD_PORT,
 513                  ATA_IDX_INB(ch, ATA_BMCMD_PORT) & ~ATA_BMCMD_START_STOP);
 514     ch->dma->flags &= ~ATA_DMA_ACTIVE;
 515     error = ATA_IDX_INB(ch, ATA_BMSTAT_PORT) & ATA_BMSTAT_MASK;
 516     ATA_IDX_OUTB(ch, ATA_BMSTAT_PORT, ATA_BMSTAT_INTERRUPT | ATA_BMSTAT_ERROR);
 517     return error;
 518 }
 519
 520 static void
 521 ata_pci_dmareset(device_t dev)
 522 {
 523     struct ata_channel *ch = device_get_softc(dev);
 524
 525     ATA_IDX_OUTB(ch, ATA_BMCMD_PORT,
 526                  ATA_IDX_INB(ch, ATA_BMCMD_PORT) & ~ATA_BMCMD_START_STOP);
 527     ch->dma->flags &= ~ATA_DMA_ACTIVE;
 528     ATA_IDX_OUTB(ch, ATA_BMSTAT_PORT, ATA_BMSTAT_INTERRUPT | ATA_BMSTAT_ERROR);
 529     ch->dma->unload(dev);
 530 }
 531
 532 void
 533 ata_pci_dmainit(device_t dev)
 534 {
 535     struct ata_channel *ch = device_get_softc(dev);
 536
 537     ata_dmainit(dev);
 538     if (ch->dma) {
 539         ch->dma->start = ata_pci_dmastart;
 540         ch->dma->stop = ata_pci_dmastop;
 541         ch->dma->reset = ata_pci_dmareset;
 542     }
 543 }
 544
 545 char *
 546 ata_pcivendor2str(device_t dev)
 547 {
 548     switch (pci_get_vendor(dev)) {
 549     case ATA_ACARD_ID:          return "Acard";
 550     case ATA_ACER_LABS_ID:      return "AcerLabs";
 551     case ATA_AMD_ID:            return "AMD";
 552     case ATA_ATI_ID:            return "ATI";
 553     case ATA_CYRIX_ID:          return "Cyrix";
 554     case ATA_CYPRESS_ID:        return "Cypress";
 555     case ATA_HIGHPOINT_ID:      return "HighPoint";
 556     case ATA_INTEL_ID:          return "Intel";
 557     case ATA_ITE_ID:            return "ITE";
 558     case ATA_JMICRON_ID:        return "JMicron";
 559     case ATA_MARVELL_ID:        return "Marvell";
 560     case ATA_NATIONAL_ID:       return "National";
 561     case ATA_NETCELL_ID:        return "Netcell";
 562     case ATA_NVIDIA_ID:         return "nVidia";
 563     case ATA_PROMISE_ID:        return "Promise";
 564     case ATA_SERVERWORKS_ID:    return "ServerWorks";
 565     case ATA_SILICON_IMAGE_ID:  return "SiI";
 566     case ATA_SIS_ID:            return "SiS";
 567     case ATA_VIA_ID:            return "VIA";
 568     case ATA_CENATEK_ID:        return "Cenatek";
 569     case ATA_MICRON_ID:         return "Micron";
 570     default:                    return "Generic";
 571     }
 572 }
 573
 574 static device_method_t ata_pci_methods[] = {
 575     /* device interface */
 576     DEVMETHOD(device_probe,             ata_pci_probe),
 577     DEVMETHOD(device_attach,            ata_pci_attach),
 578     DEVMETHOD(device_detach,            ata_pci_detach),
 579     DEVMETHOD(device_shutdown,          bus_generic_shutdown),
 580     DEVMETHOD(device_suspend,           bus_generic_suspend),
 581     DEVMETHOD(device_resume,            bus_generic_resume),
 582
 583     /* bus methods */
 584     DEVMETHOD(bus_alloc_resource,       ata_pci_alloc_resource),
 585     DEVMETHOD(bus_release_resource,     ata_pci_release_resource),
 586     DEVMETHOD(bus_activate_resource,    bus_generic_activate_resource),
 587     DEVMETHOD(bus_deactivate_resource,  bus_generic_deactivate_resource),
 588     DEVMETHOD(bus_setup_intr,           ata_pci_setup_intr),
 589     DEVMETHOD(bus_teardown_intr,        ata_pci_teardown_intr),
 590
 591     { 0, 0 }
 592 };
 593
 594 devclass_t atapci_devclass;
 595
 596 static driver_t ata_pci_driver = {
 597     "atapci",
 598     ata_pci_methods,
 599     sizeof(struct ata_pci_controller),
 600 };
 601
 602 DRIVER_MODULE(atapci, pci, ata_pci_driver, atapci_devclass, 0, 0);
 603 MODULE_VERSION(atapci, 1);
 604 MODULE_DEPEND(atapci, ata, 1, 1, 1);
 605
 606 static int
 607 ata_pcichannel_probe(device_t dev)
 608 {
 609     struct ata_channel *ch = device_get_softc(dev);
 610     device_t *children;
 611     int count, i;
 612     char buffer[32];
 613
 614     /* take care of green memory */
 615     bzero(ch, sizeof(struct ata_channel));
 616
 617     /* find channel number on this controller */
 618     device_get_children(device_get_parent(dev), &children, &count);
 619     for (i = 0; i < count; i++) {
 620         if (children[i] == dev)
 621             ch->unit = i;
 622     }
 623     kfree(children, M_TEMP);
 624
 625     ksprintf(buffer, "ATA channel %d", ch->unit);
 626     device_set_desc_copy(dev, buffer);
 627
 628     return ata_probe(dev);
 629 }
 630
 631 static int
 632 ata_pcichannel_attach(device_t dev)
 633 {
 634     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
 635     struct ata_channel *ch = device_get_softc(dev);
 636     int error;
 637
 638     if (ctlr->dmainit)
 639         ctlr->dmainit(dev);
 640     if (ch->dma)
 641         ch->dma->alloc(dev);
 642
 643     if ((error = ctlr->allocate(dev))) {
 644         if (ch->dma)
 645             ch->dma->free(dev);
 646         return error;
 647     }
 648
 649     return ata_attach(dev);
 650 }
 651
 652 static int
 653 ata_pcichannel_detach(device_t dev)
 654 {
 655     struct ata_channel *ch = device_get_softc(dev);
 656     int error;
 657
 658     if ((error = ata_detach(dev)))
 659         return error;
 660
 661     if (ch->dma)
 662         ch->dma->free(dev);
 663
 664     /* XXX SOS free resources for io and ctlio ?? */
 665
 666     return 0;
 667 }
 668
 669 static int
 670 ata_pcichannel_locking(device_t dev, int mode)
 671 {
 672     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
 673     struct ata_channel *ch = device_get_softc(dev);
 674
 675     if (ctlr->locking)
 676         return ctlr->locking(dev, mode);
 677     else
 678         return ch->unit;
 679 }
 680
 681 static void
 682 ata_pcichannel_reset(device_t dev)
 683 {
 684     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
 685     struct ata_channel *ch = device_get_softc(dev);
 686
 687     /* if DMA engine present reset it  */
 688     if (ch->dma) {
 689         if (ch->dma->reset)
 690             ch->dma->reset(dev);
 691         ch->dma->unload(dev);
 692     }
 693
 694     /* reset the controller HW */
 695     if (ctlr->reset)
 696         ctlr->reset(dev);
 697     else
 698         ata_generic_reset(dev);
 699 }
 700
 701 static void
 702 ata_pcichannel_setmode(device_t parent, device_t dev)
 703 {
 704     struct ata_pci_controller *ctlr = device_get_softc(GRANDPARENT(dev));
 705     struct ata_device *atadev = device_get_softc(dev);
 706     int mode = atadev->mode;
 707
 708     ctlr->setmode(dev, ATA_PIO_MAX);
 709     if (mode >= ATA_DMA)
 710         ctlr->setmode(dev, mode);
 711 }
 712
 713 static device_method_t ata_pcichannel_methods[] = {
 714     /* device interface */
 715     DEVMETHOD(device_probe,     ata_pcichannel_probe),
 716     DEVMETHOD(device_attach,    ata_pcichannel_attach),
 717     DEVMETHOD(device_detach,    ata_pcichannel_detach),
 718     DEVMETHOD(device_shutdown,  bus_generic_shutdown),
 719     DEVMETHOD(device_suspend,   ata_suspend),
 720     DEVMETHOD(device_resume,    ata_resume),
 721
 722     /* ATA methods */
 723     DEVMETHOD(ata_setmode,      ata_pcichannel_setmode),
 724     DEVMETHOD(ata_locking,      ata_pcichannel_locking),
 725     DEVMETHOD(ata_reset,        ata_pcichannel_reset),
 726
 727     { 0, 0 }
 728 };
 729
 730 driver_t ata_pcichannel_driver = {
 731     "ata",
 732     ata_pcichannel_methods,
 733     sizeof(struct ata_channel),
 734 };
 735
 736 DRIVER_MODULE(ata, atapci, ata_pcichannel_driver, ata_devclass, 0, 0);