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  */
  28
  29 #include "opt_ata.h"
  30
  31 #include <sys/param.h>
  32 #include <sys/bus.h>
  33 #include <sys/bus_resource.h>
  34 #include <sys/module.h>
  35 #include <sys/nata.h>
  36 #include <sys/rman.h>
  37 #include <sys/systm.h>
  38 #include <sys/machintr.h>
  39
  40 #include <bus/pci/pcireg.h>
  41 #include <bus/pci/pcivar.h>
  42
  43 #include "ata-all.h"
  44 #include "ata-pci.h"
  45 #include "ata_if.h"
  46
  47 /* misc defines */
  48 #define IOMASK                  0xfffffffc
  49 #define ATA_PROBE_OK            -10
  50
  51 static const struct none_atapci {
  52         uint16_t        vendor;
  53         uint16_t        device;
  54         uint16_t        subvendor;
  55         uint16_t        subdevice;
  56 } none_atapci_table[] = {
  57         /* Appears on Intel PRO/1000 PM */
  58         { ATA_INTEL_ID, 0x108d, ATA_INTEL_ID, 0x0000 },
  59         { 0xffff, 0, 0, 0 }
  60 };
  61
  62 int
  63 ata_legacy(device_t dev)
  64 {
  65     return (((pci_read_config(dev, PCIR_PROGIF, 1)&PCIP_STORAGE_IDE_MASTERDEV)&&
  66             ((pci_read_config(dev, PCIR_PROGIF, 1) &
  67               (PCIP_STORAGE_IDE_MODEPRIM | PCIP_STORAGE_IDE_MODESEC)) !=
  68              (PCIP_STORAGE_IDE_MODEPRIM | PCIP_STORAGE_IDE_MODESEC))) ||
  69             (!pci_read_config(dev, PCIR_BAR(0), 4) &&
  70              !pci_read_config(dev, PCIR_BAR(1), 4) &&
  71              !pci_read_config(dev, PCIR_BAR(2), 4) &&
  72              !pci_read_config(dev, PCIR_BAR(3), 4) &&
  73              !pci_read_config(dev, PCIR_BAR(5), 4)));
  74 }
  75
  76 int
  77 ata_pci_probe(device_t dev)
  78 {
  79     if (pci_get_class(dev) != PCIC_STORAGE)
  80         return ENXIO;
  81
  82     /* if this is an AHCI chipset grab it */
  83     if (pci_get_subclass(dev) == PCIS_STORAGE_SATA) {
  84         if (!ata_ahci_ident(dev))
  85             return ATA_PROBE_OK;
  86     }
  87
  88     /* run through the vendor specific drivers */
  89     switch (pci_get_vendor(dev)) {
  90     case ATA_ACARD_ID:
  91         if (!ata_acard_ident(dev))
  92             return ATA_PROBE_OK;
  93         break;
  94     case ATA_ACER_LABS_ID:
  95         if (!ata_ali_ident(dev))
  96             return ATA_PROBE_OK;
  97         break;
  98     case ATA_AMD_ID:
  99         if (!ata_amd_ident(dev))
 100             return ATA_PROBE_OK;
 101         break;
 102     case ATA_ATI_ID:
 103         if (!ata_ati_ident(dev))
 104             return ATA_PROBE_OK;
 105         break;
 106     case ATA_CYRIX_ID:
 107         if (!ata_cyrix_ident(dev))
 108             return ATA_PROBE_OK;
 109         break;
 110     case ATA_CYPRESS_ID:
 111         if (!ata_cypress_ident(dev))
 112             return ATA_PROBE_OK;
 113         break;
 114     case ATA_HIGHPOINT_ID:
 115         if (!ata_highpoint_ident(dev))
 116             return ATA_PROBE_OK;
 117         break;
 118     case ATA_INTEL_ID:
 119         if (!ata_intel_ident(dev))
 120             return ATA_PROBE_OK;
 121         break;
 122     case ATA_ITE_ID:
 123         if (!ata_ite_ident(dev))
 124             return ATA_PROBE_OK;
 125         break;
 126     case ATA_JMICRON_ID:
 127         if (!ata_jmicron_ident(dev))
 128             return ATA_PROBE_OK;
 129         break;
 130     case ATA_MARVELL_ID:
 131         if (!ata_marvell_ident(dev))
 132             return ATA_PROBE_OK;
 133         break;
 134     case ATA_NATIONAL_ID:
 135         if (!ata_national_ident(dev))
 136             return ATA_PROBE_OK;
 137         break;
 138     case ATA_NETCELL_ID:
 139         if (!ata_netcell_ident(dev))
 140             return ATA_PROBE_OK;
 141         break;
 142     case ATA_NVIDIA_ID:
 143         if (!ata_nvidia_ident(dev))
 144             return ATA_PROBE_OK;
 145         break;
 146     case ATA_PROMISE_ID:
 147         if (!ata_promise_ident(dev))
 148             return ATA_PROBE_OK;
 149         break;
 150     case ATA_SERVERWORKS_ID:
 151         if (!ata_serverworks_ident(dev))
 152             return ATA_PROBE_OK;
 153         break;
 154     case ATA_SILICON_IMAGE_ID:
 155         if (!ata_sii_ident(dev))
 156             return ATA_PROBE_OK;
 157         break;
 158     case ATA_SIS_ID:
 159         if (!ata_sis_ident(dev))
 160             return ATA_PROBE_OK;
 161         break;
 162     case ATA_VIA_ID:
 163         if (!ata_via_ident(dev))
 164             return ATA_PROBE_OK;
 165         break;
 166     case ATA_CENATEK_ID:
 167         if (pci_get_devid(dev) == ATA_CENATEK_ROCKET) {
 168             ata_generic_ident(dev);
 169             device_set_desc(dev, "Cenatek Rocket Drive controller");
 170             return ATA_PROBE_OK;
 171         }
 172         break;
 173     case ATA_MICRON_ID:
 174         if (pci_get_devid(dev) == ATA_MICRON_RZ1000 ||
 175             pci_get_devid(dev) == ATA_MICRON_RZ1001) {
 176             ata_generic_ident(dev);
 177             device_set_desc(dev,
 178                 "RZ 100? ATA controller !WARNING! data loss/corruption risk");
 179             return ATA_PROBE_OK;
 180         }
 181         break;
 182     }
 183
 184     /* unknown chipset, try generic AHCI or DMA if it seems possible */
 185     if (pci_get_subclass(dev) == PCIS_STORAGE_IDE) {
 186         uint16_t vendor, device, subvendor, subdevice;
 187         const struct none_atapci *e;
 188
 189         vendor = pci_get_vendor(dev);
 190         device = pci_get_device(dev);
 191         subvendor = pci_get_subvendor(dev);
 192         subdevice = pci_get_subdevice(dev);
 193         for (e = none_atapci_table; e->vendor != 0xffff; ++e) {
 194             if (e->vendor == vendor && e->device == device &&
 195                 e->subvendor == subvendor && e->subdevice == subdevice)
 196                 return ENXIO;
 197         }
 198
 199         if (!ata_generic_ident(dev))
 200             return ATA_PROBE_OK;
 201     }
 202     return ENXIO;
 203 }
 204
 205 int
 206 ata_pci_attach(device_t dev)
 207 {
 208     struct ata_pci_controller *ctlr = device_get_softc(dev);
 209     u_int32_t cmd;
 210     int unit;
 211
 212     /* do chipset specific setups only needed once */
 213     ctlr->legacy = ata_legacy(dev);
 214     if (ctlr->legacy || pci_read_config(dev, PCIR_BAR(2), 4) & IOMASK)
 215         ctlr->channels = 2;
 216     else
 217         ctlr->channels = 1;
 218     ctlr->allocate = ata_pci_allocate;
 219     ctlr->dev = dev;
 220
 221     /* if needed try to enable busmastering */
 222     cmd = pci_read_config(dev, PCIR_COMMAND, 2);
 223     if (!(cmd & PCIM_CMD_BUSMASTEREN)) {
 224         pci_write_config(dev, PCIR_COMMAND, cmd | PCIM_CMD_BUSMASTEREN, 2);
 225         cmd = pci_read_config(dev, PCIR_COMMAND, 2);
 226     }
 227
 228     /* if busmastering mode "stuck" use it */
 229     if ((cmd & PCIM_CMD_BUSMASTEREN) == PCIM_CMD_BUSMASTEREN) {
 230         ctlr->r_type1 = SYS_RES_IOPORT;
 231         ctlr->r_rid1 = ATA_BMADDR_RID;
 232         ctlr->r_res1 = bus_alloc_resource_any(dev, ctlr->r_type1, &ctlr->r_rid1,
 233                                               RF_ACTIVE);
 234         /* Only set a dma init function if the device actually supports it. */
 235         ctlr->dmainit = ata_pci_dmainit;
 236     }
 237
 238     if (ctlr->chipinit(dev))
 239         return ENXIO;
 240
 241     /* attach all channels on this controller */
 242     for (unit = 0; unit < ctlr->channels; unit++) {
 243         int freeunit = 2;
 244         if ((unit == 0 || unit == 1) && ctlr->legacy) {
 245             device_add_child(dev, "ata", unit);
 246             continue;
 247         }
 248         /* XXX TGEN devclass_find_free_unit() implementation */
 249         if (ata_devclass) {
 250                 while (freeunit < devclass_get_maxunit(ata_devclass) &&
 251                     devclass_get_device(ata_devclass, freeunit) != NULL)
 252                         freeunit++;
 253         }
 254         device_add_child(dev, "ata", freeunit);
 255     }
 256     bus_generic_attach(dev);
 257     return 0;
 258 }
 259
 260 int
 261 ata_pci_detach(device_t dev)
 262 {
 263     struct ata_pci_controller *ctlr = device_get_softc(dev);
 264     device_t *children;
 265     int nchildren, i;
 266
 267     /* detach & delete all children */
 268     if (!device_get_children(dev, &children, &nchildren)) {
 269         for (i = 0; i < nchildren; i++)
 270             device_delete_child(dev, children[i]);
 271         kfree(children, M_TEMP);
 272     }
 273
 274     if (ctlr->r_irq) {
 275         bus_teardown_intr(dev, ctlr->r_irq, ctlr->handle);
 276         bus_release_resource(dev, SYS_RES_IRQ, ATA_IRQ_RID, ctlr->r_irq);
 277         ctlr->r_irq = NULL;
 278     }
 279     if (ctlr->r_res2) {
 280         bus_release_resource(dev, ctlr->r_type2, ctlr->r_rid2, ctlr->r_res2);
 281         ctlr->r_res2 = NULL;
 282     }
 283     if (ctlr->r_res1) {
 284         bus_release_resource(dev, ctlr->r_type1, ctlr->r_rid1, ctlr->r_res1);
 285         ctlr->r_res1 = NULL;
 286     }
 287
 288     return 0;
 289 }
 290
 291 struct resource *
 292 ata_pci_alloc_resource(device_t dev, device_t child, int type, int *rid,
 293     u_long start, u_long end, u_long count, u_int flags, int cpuid)
 294 {
 295     struct ata_pci_controller *controller = device_get_softc(dev);
 296     int unit = ((struct ata_channel *)device_get_softc(child))->unit;
 297     struct resource *res = NULL;
 298     int myrid;
 299
 300     if (type == SYS_RES_IOPORT) {
 301         switch (*rid) {
 302         case ATA_IOADDR_RID:
 303             if (controller->legacy) {
 304                 start = (unit ? ATA_SECONDARY : ATA_PRIMARY);
 305                 count = ATA_IOSIZE;
 306                 end = start + count - 1;
 307             }
 308             myrid = PCIR_BAR(0) + (unit << 3);
 309             res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev,
 310                                      SYS_RES_IOPORT, &myrid,
 311                                      start, end, count, flags, cpuid);
 312             break;
 313
 314         case ATA_CTLADDR_RID:
 315             if (controller->legacy) {
 316                 start = (unit ? ATA_SECONDARY : ATA_PRIMARY) + ATA_CTLOFFSET;
 317                 count = ATA_CTLIOSIZE;
 318                 end = start + count - 1;
 319             }
 320             myrid = PCIR_BAR(1) + (unit << 3);
 321             res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev,
 322                                      SYS_RES_IOPORT, &myrid,
 323                                      start, end, count, flags, cpuid);
 324             break;
 325         }
 326     }
 327     if (type == SYS_RES_IRQ && *rid == ATA_IRQ_RID) {
 328         if (controller->legacy) {
 329             int irq = (unit == 0 ? 14 : 15);
 330
 331             cpuid = machintr_legacy_intr_cpuid(irq);
 332             res = BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
 333                                      SYS_RES_IRQ, rid, irq, irq, 1, flags,
 334                                      cpuid);
 335         }
 336         else
 337             res = controller->r_irq;
 338     }
 339     return res;
 340 }
 341
 342 int
 343 ata_pci_release_resource(device_t dev, device_t child, int type, int rid,
 344                          struct resource *r)
 345 {
 346     struct ata_pci_controller *controller = device_get_softc(dev);
 347     int unit = ((struct ata_channel *)device_get_softc(child))->unit;
 348
 349     if (type == SYS_RES_IOPORT) {
 350         switch (rid) {
 351         case ATA_IOADDR_RID:
 352             return BUS_RELEASE_RESOURCE(device_get_parent(dev), dev,
 353                                         SYS_RES_IOPORT,
 354                                         PCIR_BAR(0) + (unit << 3), r);
 355             break;
 356
 357         case ATA_CTLADDR_RID:
 358             return BUS_RELEASE_RESOURCE(device_get_parent(dev), dev,
 359                                         SYS_RES_IOPORT,
 360                                         PCIR_BAR(1) + (unit << 3), r);
 361             break;
 362         default:
 363             return ENOENT;
 364         }
 365     }
 366     if (type == SYS_RES_IRQ) {
 367         if (rid != ATA_IRQ_RID)
 368             return ENOENT;
 369
 370         if (controller->legacy) {
 371             return BUS_RELEASE_RESOURCE(device_get_parent(dev), child,
 372                                         SYS_RES_IRQ, rid, r);
 373         }
 374         else
 375             return 0;
 376     }
 377     return EINVAL;
 378 }
 379
 380 int
 381 ata_pci_setup_intr(device_t dev, device_t child, struct resource *irq,
 382                    int flags, driver_intr_t *function, void *argument,
 383                    void **cookiep)
 384 {
 385     struct ata_pci_controller *controller = device_get_softc(dev);
 386
 387     if (controller->legacy) {
 388         return BUS_SETUP_INTR(device_get_parent(dev), child, irq,
 389                               flags, function, argument, cookiep, NULL, NULL);
 390     }
 391     else {
 392         struct ata_pci_controller *controller = device_get_softc(dev);
 393         int unit = ((struct ata_channel *)device_get_softc(child))->unit;
 394
 395         controller->interrupt[unit].function = function;
 396         controller->interrupt[unit].argument = argument;
 397         *cookiep = controller;
 398         return 0;
 399     }
 400 }
 401
 402 int
 403 ata_pci_teardown_intr(device_t dev, device_t child, struct resource *irq,
 404                       void *cookie)
 405 {
 406     struct ata_pci_controller *controller = device_get_softc(dev);
 407
 408     if (controller->legacy) {
 409         return BUS_TEARDOWN_INTR(device_get_parent(dev), child, irq, cookie);
 410     }
 411     else {
 412         struct ata_pci_controller *controller = device_get_softc(dev);
 413         int unit = ((struct ata_channel *)device_get_softc(child))->unit;
 414
 415         controller->interrupt[unit].function = NULL;
 416         controller->interrupt[unit].argument = NULL;
 417         return 0;
 418     }
 419 }
 420
 421 int
 422 ata_pci_allocate(device_t dev)
 423 {
 424     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
 425     struct ata_channel *ch = device_get_softc(dev);
 426     struct resource *io = NULL, *ctlio = NULL;
 427     int i, rid;
 428
 429     rid = ATA_IOADDR_RID;
 430     if (!(io = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE)))
 431         return ENXIO;
 432
 433     rid = ATA_CTLADDR_RID;
 434     if (!(ctlio = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,RF_ACTIVE))){
 435         bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, io);
 436         return ENXIO;
 437     }
 438
 439     for (i = ATA_DATA; i <= ATA_COMMAND; i ++) {
 440         ch->r_io[i].res = io;
 441         ch->r_io[i].offset = i;
 442     }
 443     ch->r_io[ATA_CONTROL].res = ctlio;
 444     ch->r_io[ATA_CONTROL].offset = ctlr->legacy ? 0 : 2;
 445     ch->r_io[ATA_IDX_ADDR].res = io;
 446     ata_default_registers(dev);
 447     if (ctlr->r_res1) {
 448         for (i = ATA_BMCMD_PORT; i <= ATA_BMDTP_PORT; i++) {
 449             ch->r_io[i].res = ctlr->r_res1;
 450             ch->r_io[i].offset = (i - ATA_BMCMD_PORT) + (ch->unit*ATA_BMIOSIZE);
 451         }
 452     }
 453
 454     ata_pci_hw(dev);
 455     return 0;
 456 }
 457
 458 void
 459 ata_pci_hw(device_t dev)
 460 {
 461     struct ata_channel *ch = device_get_softc(dev);
 462
 463     ata_generic_hw(dev);
 464     ch->hw.status = ata_pci_status;
 465 }
 466
 467 int
 468 ata_pci_status(device_t dev)
 469 {
 470     struct ata_pci_controller *controller =
 471         device_get_softc(device_get_parent(dev));
 472     struct ata_channel *ch = device_get_softc(dev);
 473
 474     if ((dumping || !controller->legacy) &&
 475         ch->dma && ((ch->flags & ATA_ALWAYS_DMASTAT) ||
 476                     (ch->dma->flags & ATA_DMA_ACTIVE))) {
 477         int bmstat = ATA_IDX_INB(ch, ATA_BMSTAT_PORT) & ATA_BMSTAT_MASK;
 478
 479         /*
 480          * Strictly speaking the DMA engine should already be stopped
 481          * once we receive the interrupt.
 482          * However at least ICH controllers seem to have the habbit
 483          * of not clearing the active bit even though the interrupt
 484          * is valid.
 485          * To make sure we wait a little bit (to make sure that other
 486          * buggy systems actually have a chance of finishing their
 487          * DMA transaction) and then ignore the active bit.
 488          */
 489         if ((bmstat & (ATA_BMSTAT_ACTIVE | ATA_BMSTAT_INTERRUPT)) ==
 490                 (ATA_BMSTAT_ACTIVE | ATA_BMSTAT_INTERRUPT)) {
 491             DELAY(100);
 492             bmstat = ATA_IDX_INB(ch, ATA_BMSTAT_PORT) & ATA_BMSTAT_MASK;
 493         }
 494         if ((bmstat & ATA_BMSTAT_INTERRUPT) == 0)
 495             return 0;
 496         ATA_IDX_OUTB(ch, ATA_BMSTAT_PORT, bmstat & ~ATA_BMSTAT_ERROR);
 497         DELAY(1);
 498     }
 499     if (ATA_IDX_INB(ch, ATA_ALTSTAT) & ATA_S_BUSY) {
 500         DELAY(100);
 501         if (ATA_IDX_INB(ch, ATA_ALTSTAT) & ATA_S_BUSY)
 502             return 0;
 503     }
 504     return 1;
 505 }
 506
 507 static int
 508 ata_pci_dmastart(device_t dev)
 509 {
 510     struct ata_channel *ch = device_get_softc(device_get_parent(dev));
 511     u_int8_t val;
 512
 513     ATA_IDX_OUTB(ch, ATA_BMSTAT_PORT, (ATA_IDX_INB(ch, ATA_BMSTAT_PORT) |
 514                  (ATA_BMSTAT_INTERRUPT | ATA_BMSTAT_ERROR)));
 515     ATA_IDX_OUTL(ch, ATA_BMDTP_PORT, ch->dma->sg_bus);
 516     ch->dma->flags |= ATA_DMA_ACTIVE;
 517     val = ATA_IDX_INB(ch, ATA_BMCMD_PORT);
 518     if (ch->dma->flags & ATA_DMA_READ)
 519         val |= ATA_BMCMD_WRITE_READ;
 520     else
 521         val &= ~ATA_BMCMD_WRITE_READ;
 522     ATA_IDX_OUTB(ch, ATA_BMCMD_PORT, val);
 523
 524     /*
 525      * Issue the start command separately from configuration setup,
 526      * in case the hardware latches portions of the configuration.
 527      */
 528     ATA_IDX_OUTB(ch, ATA_BMCMD_PORT, val | ATA_BMCMD_START_STOP);
 529
 530     return 0;
 531 }
 532
 533 static int
 534 ata_pci_dmastop(device_t dev)
 535 {
 536     struct ata_channel *ch = device_get_softc(device_get_parent(dev));
 537     int error;
 538
 539     ATA_IDX_OUTB(ch, ATA_BMCMD_PORT,
 540                  ATA_IDX_INB(ch, ATA_BMCMD_PORT) & ~ATA_BMCMD_START_STOP);
 541     ch->dma->flags &= ~ATA_DMA_ACTIVE;
 542     error = ATA_IDX_INB(ch, ATA_BMSTAT_PORT) & ATA_BMSTAT_MASK;
 543     ATA_IDX_OUTB(ch, ATA_BMSTAT_PORT, ATA_BMSTAT_INTERRUPT | ATA_BMSTAT_ERROR);
 544     return error;
 545 }
 546
 547 static void
 548 ata_pci_dmareset(device_t dev)
 549 {
 550     struct ata_channel *ch = device_get_softc(dev);
 551
 552     ATA_IDX_OUTB(ch, ATA_BMCMD_PORT,
 553                  ATA_IDX_INB(ch, ATA_BMCMD_PORT) & ~ATA_BMCMD_START_STOP);
 554     ch->dma->flags &= ~ATA_DMA_ACTIVE;
 555     ATA_IDX_OUTB(ch, ATA_BMSTAT_PORT, ATA_BMSTAT_INTERRUPT | ATA_BMSTAT_ERROR);
 556     ch->dma->unload(dev);
 557 }
 558
 559 void
 560 ata_pci_dmainit(device_t dev)
 561 {
 562     struct ata_channel *ch = device_get_softc(dev);
 563
 564     ata_dmainit(dev);
 565     if (ch->dma) {
 566         ch->dma->start = ata_pci_dmastart;
 567         ch->dma->stop = ata_pci_dmastop;
 568         ch->dma->reset = ata_pci_dmareset;
 569     }
 570 }
 571
 572 char *
 573 ata_pcivendor2str(device_t dev)
 574 {
 575     switch (pci_get_vendor(dev)) {
 576     case ATA_ACARD_ID:          return "Acard";
 577     case ATA_ACER_LABS_ID:      return "AcerLabs";
 578     case ATA_AMD_ID:            return "AMD";
 579     case ATA_ATI_ID:            return "ATI";
 580     case ATA_CYRIX_ID:          return "Cyrix";
 581     case ATA_CYPRESS_ID:        return "Cypress";
 582     case ATA_HIGHPOINT_ID:      return "HighPoint";
 583     case ATA_INTEL_ID:          return "Intel";
 584     case ATA_ITE_ID:            return "ITE";
 585     case ATA_JMICRON_ID:        return "JMicron";
 586     case ATA_MARVELL_ID:        return "Marvell";
 587     case ATA_NATIONAL_ID:       return "National";
 588     case ATA_NETCELL_ID:        return "Netcell";
 589     case ATA_NVIDIA_ID:         return "nVidia";
 590     case ATA_PROMISE_ID:        return "Promise";
 591     case ATA_SERVERWORKS_ID:    return "ServerWorks";
 592     case ATA_SILICON_IMAGE_ID:  return "SiI";
 593     case ATA_SIS_ID:            return "SiS";
 594     case ATA_VIA_ID:            return "VIA";
 595     case ATA_CENATEK_ID:        return "Cenatek";
 596     case ATA_MICRON_ID:         return "Micron";
 597     default:                    return "Generic";
 598     }
 599 }
 600
 601 static device_method_t ata_pci_methods[] = {
 602     /* device interface */
 603     DEVMETHOD(device_probe,             ata_pci_probe),
 604     DEVMETHOD(device_attach,            ata_pci_attach),
 605     DEVMETHOD(device_detach,            ata_pci_detach),
 606     DEVMETHOD(device_shutdown,          bus_generic_shutdown),
 607     DEVMETHOD(device_suspend,           bus_generic_suspend),
 608     DEVMETHOD(device_resume,            bus_generic_resume),
 609
 610     /* bus methods */
 611     DEVMETHOD(bus_alloc_resource,       ata_pci_alloc_resource),
 612     DEVMETHOD(bus_release_resource,     ata_pci_release_resource),
 613     DEVMETHOD(bus_activate_resource,    bus_generic_activate_resource),
 614     DEVMETHOD(bus_deactivate_resource,  bus_generic_deactivate_resource),
 615     DEVMETHOD(bus_setup_intr,           ata_pci_setup_intr),
 616     DEVMETHOD(bus_teardown_intr,        ata_pci_teardown_intr),
 617
 618     DEVMETHOD_END
 619 };
 620
 621 devclass_t atapci_devclass;
 622
 623 static driver_t ata_pci_driver = {
 624     "atapci",
 625     ata_pci_methods,
 626     sizeof(struct ata_pci_controller),
 627 };
 628
 629 DRIVER_MODULE(atapci, pci, ata_pci_driver, atapci_devclass, NULL, NULL);
 630 MODULE_VERSION(atapci, 1);
 631 MODULE_DEPEND(atapci, ata, 1, 1, 1);
 632
 633 static int
 634 ata_pcichannel_probe(device_t dev)
 635 {
 636     struct ata_channel *ch = device_get_softc(dev);
 637     device_t *children;
 638     int count, i;
 639     char buffer[32];
 640
 641     /* take care of green memory */
 642     bzero(ch, sizeof(struct ata_channel));
 643
 644     /* find channel number on this controller */
 645     device_get_children(device_get_parent(dev), &children, &count);
 646     for (i = 0; i < count; i++) {
 647         if (children[i] == dev)
 648             ch->unit = i;
 649     }
 650     kfree(children, M_TEMP);
 651
 652     ksprintf(buffer, "ATA channel %d", ch->unit);
 653     device_set_desc_copy(dev, buffer);
 654
 655     return ata_probe(dev);
 656 }
 657
 658 static int
 659 ata_pcichannel_attach(device_t dev)
 660 {
 661     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
 662     struct ata_channel *ch = device_get_softc(dev);
 663     int error;
 664
 665     if (ctlr->dmainit)
 666         ctlr->dmainit(dev);
 667     if (ch->dma)
 668         ch->dma->alloc(dev);
 669
 670     if ((error = ctlr->allocate(dev))) {
 671         if (ch->dma)
 672             ch->dma->free(dev);
 673         return error;
 674     }
 675
 676     return ata_attach(dev);
 677 }
 678
 679 static int
 680 ata_pcichannel_detach(device_t dev)
 681 {
 682     struct ata_channel *ch = device_get_softc(dev);
 683     int error;
 684
 685     if ((error = ata_detach(dev)))
 686         return error;
 687
 688     if (ch->dma)
 689         ch->dma->free(dev);
 690
 691     /* XXX SOS free resources for io and ctlio ?? */
 692
 693     return 0;
 694 }
 695
 696 static int
 697 ata_pcichannel_locking(device_t dev, int mode)
 698 {
 699     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
 700     struct ata_channel *ch = device_get_softc(dev);
 701
 702     if (ctlr->locking)
 703         return ctlr->locking(dev, mode);
 704     else
 705         return ch->unit;
 706 }
 707
 708 static void
 709 ata_pcichannel_reset(device_t dev)
 710 {
 711     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
 712     struct ata_channel *ch = device_get_softc(dev);
 713
 714     /* if DMA engine present reset it  */
 715     if (ch->dma) {
 716         if (ch->dma->reset)
 717             ch->dma->reset(dev);
 718         ch->dma->unload(dev);
 719     }
 720
 721     /* reset the controller HW */
 722     if (ctlr->reset)
 723         ctlr->reset(dev);
 724     else
 725         ata_generic_reset(dev);
 726 }
 727
 728 static void
 729 ata_pcichannel_setmode(device_t parent, device_t dev)
 730 {
 731     struct ata_pci_controller *ctlr = device_get_softc(GRANDPARENT(dev));
 732     struct ata_device *atadev = device_get_softc(dev);
 733     int mode = atadev->mode;
 734
 735     ctlr->setmode(dev, ATA_PIO_MAX);
 736     if (mode >= ATA_DMA)
 737         ctlr->setmode(dev, mode);
 738 }
 739
 740 static device_method_t ata_pcichannel_methods[] = {
 741     /* device interface */
 742     DEVMETHOD(device_probe,     ata_pcichannel_probe),
 743     DEVMETHOD(device_attach,    ata_pcichannel_attach),
 744     DEVMETHOD(device_detach,    ata_pcichannel_detach),
 745     DEVMETHOD(device_shutdown,  bus_generic_shutdown),
 746     DEVMETHOD(device_suspend,   ata_suspend),
 747     DEVMETHOD(device_resume,    ata_resume),
 748
 749     /* ATA methods */
 750     DEVMETHOD(ata_setmode,      ata_pcichannel_setmode),
 751     DEVMETHOD(ata_locking,      ata_pcichannel_locking),
 752     DEVMETHOD(ata_reset,        ata_pcichannel_reset),
 753
 754     DEVMETHOD_END
 755 };
 756
 757 driver_t ata_pcichannel_driver = {
 758     "ata",
 759     ata_pcichannel_methods,
 760     sizeof(struct ata_channel),
 761 };
 762
 763 DRIVER_MODULE(ata, atapci, ata_pcichannel_driver, ata_devclass, NULL, NULL);