drivers/ide/pci/piix.c

   1 /*
   2  *  linux/drivers/ide/pci/piix.c        Version 0.54    Sep 5, 2007
   3  *
   4  *  Copyright (C) 1998-1999 Andrzej Krzysztofowicz, Author and Maintainer
   5  *  Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org>
   6  *  Copyright (C) 2003 Red Hat Inc <alan@redhat.com>
   7  *  Copyright (C) 2006-2007 MontaVista Software, Inc. <source@mvista.com>
   8  *
   9  *  May be copied or modified under the terms of the GNU General Public License
  10  *
  11  *  PIO mode setting function for Intel chipsets.
  12  *  For use instead of BIOS settings.
  13  *
  14  * 40-41
  15  * 42-43
  16  *
  17  *                 41
  18  *                 43
  19  *
  20  * | PIO 0       | c0 | 80 | 0 |
  21  * | PIO 2 | SW2 | d0 | 90 | 4 |
  22  * | PIO 3 | MW1 | e1 | a1 | 9 |
  23  * | PIO 4 | MW2 | e3 | a3 | b |
  24  *
  25  * sitre = word40 & 0x4000; primary
  26  * sitre = word42 & 0x4000; secondary
  27  *
  28  * 44 8421|8421    hdd|hdb
  29  *
  30  * 48 8421         hdd|hdc|hdb|hda udma enabled
  31  *
  32  *    0001         hda
  33  *    0010         hdb
  34  *    0100         hdc
  35  *    1000         hdd
  36  *
  37  * 4a 84|21        hdb|hda
  38  * 4b 84|21        hdd|hdc
  39  *
  40  *    ata-33/82371AB
  41  *    ata-33/82371EB
  42  *    ata-33/82801AB            ata-66/82801AA
  43  *    00|00 udma 0              00|00 reserved
  44  *    01|01 udma 1              01|01 udma 3
  45  *    10|10 udma 2              10|10 udma 4
  46  *    11|11 reserved            11|11 reserved
  47  *
  48  * 54 8421|8421    ata66 drive|ata66 enable
  49  *
  50  * pci_read_config_word(HWIF(drive)->pci_dev, 0x40, &reg40);
  51  * pci_read_config_word(HWIF(drive)->pci_dev, 0x42, &reg42);
  52  * pci_read_config_word(HWIF(drive)->pci_dev, 0x44, &reg44);
  53  * pci_read_config_byte(HWIF(drive)->pci_dev, 0x48, &reg48);
  54  * pci_read_config_word(HWIF(drive)->pci_dev, 0x4a, &reg4a);
  55  * pci_read_config_byte(HWIF(drive)->pci_dev, 0x54, &reg54);
  56  *
  57  * Documentation
  58  *      Publically available from Intel web site. Errata documentation
  59  * is also publically available. As an aide to anyone hacking on this
  60  * driver the list of errata that are relevant is below.going back to
  61  * PIIX4. Older device documentation is now a bit tricky to find.
  62  *
  63  * Errata of note:
  64  *
  65  * Unfixable
  66  *      PIIX4    errata #9      - Only on ultra obscure hw
  67  *      ICH3     errata #13     - Not observed to affect real hw
  68  *                                by Intel
  69  *
  70  * Things we must deal with
  71  *      PIIX4   errata #10      - BM IDE hang with non UDMA
  72  *                                (must stop/start dma to recover)
  73  *      440MX   errata #15      - As PIIX4 errata #10
  74  *      PIIX4   errata #15      - Must not read control registers
  75  *                                during a PIO transfer
  76  *      440MX   errata #13      - As PIIX4 errata #15
  77  *      ICH2    errata #21      - DMA mode 0 doesn't work right
  78  *      ICH0/1  errata #55      - As ICH2 errata #21
  79  *      ICH2    spec c #9       - Extra operations needed to handle
  80  *                                drive hotswap [NOT YET SUPPORTED]
  81  *      ICH2    spec c #20      - IDE PRD must not cross a 64K boundary
  82  *                                and must be dword aligned
  83  *      ICH2    spec c #24      - UDMA mode 4,5 t85/86 should be 6ns not 3.3
  84  *
  85  * Should have been BIOS fixed:
  86  *      450NX:  errata #19      - DMA hangs on old 450NX
  87  *      450NX:  errata #20      - DMA hangs on old 450NX
  88  *      450NX:  errata #25      - Corruption with DMA on old 450NX
  89  *      ICH3    errata #15      - IDE deadlock under high load
  90  *                                (BIOS must set dev 31 fn 0 bit 23)
  91  *      ICH3    errata #18      - Don't use native mode
  92  */
  93
  94 #include <linux/types.h>
  95 #include <linux/module.h>
  96 #include <linux/kernel.h>
  97 #include <linux/ioport.h>
  98 #include <linux/pci.h>
  99 #include <linux/hdreg.h>
 100 #include <linux/ide.h>
 101 #include <linux/delay.h>
 102 #include <linux/init.h>
 103
 104 #include <asm/io.h>
 105
 106 static int no_piix_dma;
 107
 108 /**
 109  *      piix_set_pio_mode       -       set host controller for PIO mode
 110  *      @drive: drive
 111  *      @pio: PIO mode number
 112  *
 113  *      Set the interface PIO mode based upon the settings done by AMI BIOS.
 114  */
 115
 116 static void piix_set_pio_mode(ide_drive_t *drive, const u8 pio)
 117 {
 118         ide_hwif_t *hwif        = HWIF(drive);
 119         struct pci_dev *dev     = hwif->pci_dev;
 120         int is_slave            = drive->dn & 1;
 121         int master_port         = hwif->channel ? 0x42 : 0x40;
 122         int slave_port          = 0x44;
 123         unsigned long flags;
 124         u16 master_data;
 125         u8 slave_data;
 126         static DEFINE_SPINLOCK(tune_lock);
 127         int control = 0;
 128
 129                                      /* ISP  RTC */
 130         static const u8 timings[][2]= {
 131                                         { 0, 0 },
 132                                         { 0, 0 },
 133                                         { 1, 0 },
 134                                         { 2, 1 },
 135                                         { 2, 3 }, };
 136
 137         /*
 138          * Master vs slave is synchronized above us but the slave register is
 139          * shared by the two hwifs so the corner case of two slave timeouts in
 140          * parallel must be locked.
 141          */
 142         spin_lock_irqsave(&tune_lock, flags);
 143         pci_read_config_word(dev, master_port, &master_data);
 144
 145         if (pio > 1)
 146                 control |= 1;   /* Programmable timing on */
 147         if (drive->media == ide_disk)
 148                 control |= 4;   /* Prefetch, post write */
 149         if (pio > 2)
 150                 control |= 2;   /* IORDY */
 151         if (is_slave) {
 152                 master_data |=  0x4000;
 153                 master_data &= ~0x0070;
 154                 if (pio > 1) {
 155                         /* Set PPE, IE and TIME */
 156                         master_data |= control << 4;
 157                 }
 158                 pci_read_config_byte(dev, slave_port, &slave_data);
 159                 slave_data &= hwif->channel ? 0x0f : 0xf0;
 160                 slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) <<
 161                                (hwif->channel ? 4 : 0);
 162         } else {
 163                 master_data &= ~0x3307;
 164                 if (pio > 1) {
 165                         /* enable PPE, IE and TIME */
 166                         master_data |= control;
 167                 }
 168                 master_data |= (timings[pio][0] << 12) | (timings[pio][1] << 8);
 169         }
 170         pci_write_config_word(dev, master_port, master_data);
 171         if (is_slave)
 172                 pci_write_config_byte(dev, slave_port, slave_data);
 173         spin_unlock_irqrestore(&tune_lock, flags);
 174 }
 175
 176 /**
 177  *      piix_set_dma_mode       -       set host controller for DMA mode
 178  *      @drive: drive
 179  *      @speed: DMA mode
 180  *
 181  *      Set a PIIX host controller to the desired DMA mode.  This involves
 182  *      programming the right timing data into the PCI configuration space.
 183  */
 184
 185 static void piix_set_dma_mode(ide_drive_t *drive, const u8 speed)
 186 {
 187         ide_hwif_t *hwif        = HWIF(drive);
 188         struct pci_dev *dev     = hwif->pci_dev;
 189         u8 maslave              = hwif->channel ? 0x42 : 0x40;
 190         int a_speed             = 3 << (drive->dn * 4);
 191         int u_flag              = 1 << drive->dn;
 192         int v_flag              = 0x01 << drive->dn;
 193         int w_flag              = 0x10 << drive->dn;
 194         int u_speed             = 0;
 195         int                     sitre;
 196         u16                     reg4042, reg4a;
 197         u8                      reg48, reg54, reg55;
 198
 199         pci_read_config_word(dev, maslave, &reg4042);
 200         sitre = (reg4042 & 0x4000) ? 1 : 0;
 201         pci_read_config_byte(dev, 0x48, &reg48);
 202         pci_read_config_word(dev, 0x4a, &reg4a);
 203         pci_read_config_byte(dev, 0x54, &reg54);
 204         pci_read_config_byte(dev, 0x55, &reg55);
 205
 206         if (speed >= XFER_UDMA_0) {
 207                 u8 udma = speed - XFER_UDMA_0;
 208
 209                 u_speed = min_t(u8, 2 - (udma & 1), udma) << (drive->dn * 4);
 210
 211                 if (!(reg48 & u_flag))
 212                         pci_write_config_byte(dev, 0x48, reg48 | u_flag);
 213                 if (speed == XFER_UDMA_5) {
 214                         pci_write_config_byte(dev, 0x55, (u8) reg55|w_flag);
 215                 } else {
 216                         pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag);
 217                 }
 218                 if ((reg4a & a_speed) != u_speed)
 219                         pci_write_config_word(dev, 0x4a, (reg4a & ~a_speed) | u_speed);
 220                 if (speed > XFER_UDMA_2) {
 221                         if (!(reg54 & v_flag))
 222                                 pci_write_config_byte(dev, 0x54, reg54 | v_flag);
 223                 } else
 224                         pci_write_config_byte(dev, 0x54, reg54 & ~v_flag);
 225         } else {
 226                 const u8 mwdma_to_pio[] = { 0, 3, 4 };
 227                 u8 pio;
 228
 229                 if (reg48 & u_flag)
 230                         pci_write_config_byte(dev, 0x48, reg48 & ~u_flag);
 231                 if (reg4a & a_speed)
 232                         pci_write_config_word(dev, 0x4a, reg4a & ~a_speed);
 233                 if (reg54 & v_flag)
 234                         pci_write_config_byte(dev, 0x54, reg54 & ~v_flag);
 235                 if (reg55 & w_flag)
 236                         pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag);
 237
 238                 if (speed >= XFER_MW_DMA_0)
 239                         pio = mwdma_to_pio[speed - XFER_MW_DMA_0];
 240                 else
 241                         pio = 2; /* only SWDMA2 is allowed */
 242
 243                 piix_set_pio_mode(drive, pio);
 244         }
 245 }
 246
 247 /**
 248  *      init_chipset_ich        -       set up the ICH chipset
 249  *      @dev: PCI device to set up
 250  *      @name: Name of the device
 251  *
 252  *      Initialize the PCI device as required.  For the ICH this turns
 253  *      out to be nice and simple.
 254  */
 255
 256 static unsigned int __devinit init_chipset_ich(struct pci_dev *dev, const char *name)
 257 {
 258         u32 extra = 0;
 259
 260         pci_read_config_dword(dev, 0x54, &extra);
 261         pci_write_config_dword(dev, 0x54, extra | 0x400);
 262
 263         return 0;
 264 }
 265
 266 /**
 267  *      piix_dma_clear_irq      -       clear BMDMA status
 268  *      @drive: IDE drive to clear
 269  *
 270  *      Called from ide_intr() for PIO interrupts
 271  *      to clear BMDMA status as needed by ICHx
 272  */
 273 static void piix_dma_clear_irq(ide_drive_t *drive)
 274 {
 275         ide_hwif_t *hwif = HWIF(drive);
 276         u8 dma_stat;
 277
 278         /* clear the INTR & ERROR bits */
 279         dma_stat = inb(hwif->dma_status);
 280         /* Should we force the bit as well ? */
 281         outb(dma_stat, hwif->dma_status);
 282 }
 283
 284 struct ich_laptop {
 285         u16 device;
 286         u16 subvendor;
 287         u16 subdevice;
 288 };
 289
 290 /*
 291  *      List of laptops that use short cables rather than 80 wire
 292  */
 293
 294 static const struct ich_laptop ich_laptop[] = {
 295         /* devid, subvendor, subdev */
 296         { 0x27DF, 0x1025, 0x0102 },     /* ICH7 on Acer 5602aWLMi */
 297         { 0x27DF, 0x0005, 0x0280 },     /* ICH7 on Acer 5602WLMi */
 298         { 0x27DF, 0x1025, 0x0110 },     /* ICH7 on Acer 3682WLMi */
 299         { 0x27DF, 0x1043, 0x1267 },     /* ICH7 on Asus W5F */
 300         { 0x27DF, 0x103C, 0x30A1 },     /* ICH7 on HP Compaq nc2400 */
 301         { 0x24CA, 0x1025, 0x0061 },     /* ICH4 on Acer Aspire 2023WLMi */
 302         /* end marker */
 303         { 0, }
 304 };
 305
 306 static u8 __devinit piix_cable_detect(ide_hwif_t *hwif)
 307 {
 308         struct pci_dev *pdev = hwif->pci_dev;
 309         const struct ich_laptop *lap = &ich_laptop[0];
 310         u8 reg54h = 0, mask = hwif->channel ? 0xc0 : 0x30;
 311
 312         /* check for specials */
 313         while (lap->device) {
 314                 if (lap->device == pdev->device &&
 315                     lap->subvendor == pdev->subsystem_vendor &&
 316                     lap->subdevice == pdev->subsystem_device) {
 317                         return ATA_CBL_PATA40_SHORT;
 318                 }
 319                 lap++;
 320         }
 321
 322         pci_read_config_byte(pdev, 0x54, &reg54h);
 323
 324         return (reg54h & mask) ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
 325 }
 326
 327 /**
 328  *      init_hwif_piix          -       fill in the hwif for the PIIX
 329  *      @hwif: IDE interface
 330  *
 331  *      Set up the ide_hwif_t for the PIIX interface according to the
 332  *      capabilities of the hardware.
 333  */
 334
 335 static void __devinit init_hwif_piix(ide_hwif_t *hwif)
 336 {
 337         hwif->set_pio_mode = &piix_set_pio_mode;
 338         hwif->set_dma_mode = &piix_set_dma_mode;
 339
 340         if (!hwif->dma_base)
 341                 return;
 342
 343         if (hwif->ultra_mask & 0x78) {
 344                 if (hwif->cbl != ATA_CBL_PATA40_SHORT)
 345                         hwif->cbl = piix_cable_detect(hwif);
 346         }
 347
 348         if (no_piix_dma)
 349                 hwif->ultra_mask = hwif->mwdma_mask = hwif->swdma_mask = 0;
 350 }
 351
 352 static void __devinit init_hwif_ich(ide_hwif_t *hwif)
 353 {
 354         init_hwif_piix(hwif);
 355
 356         /* ICHx need to clear the BMDMA status for all interrupts */
 357         if (hwif->dma_base)
 358                 hwif->ide_dma_clear_irq = &piix_dma_clear_irq;
 359 }
 360
 361 #ifndef CONFIG_IA64
 362  #define IDE_HFLAGS_PIIX (IDE_HFLAG_LEGACY_IRQS | IDE_HFLAG_BOOTABLE)
 363 #else
 364  #define IDE_HFLAGS_PIIX IDE_HFLAG_BOOTABLE
 365 #endif
 366
 367 #define DECLARE_PIIX_DEV(name_str, udma) \
 368         {                                               \
 369                 .name           = name_str,             \
 370                 .init_hwif      = init_hwif_piix,       \
 371                 .enablebits     = {{0x41,0x80,0x80}, {0x43,0x80,0x80}}, \
 372                 .host_flags     = IDE_HFLAGS_PIIX,      \
 373                 .pio_mask       = ATA_PIO4,             \
 374                 .swdma_mask     = ATA_SWDMA2_ONLY,      \
 375                 .mwdma_mask     = ATA_MWDMA12_ONLY,     \
 376                 .udma_mask      = udma,                 \
 377         }
 378
 379 #define DECLARE_ICH_DEV(name_str, udma) \
 380         { \
 381                 .name           = name_str, \
 382                 .init_chipset   = init_chipset_ich, \
 383                 .init_hwif      = init_hwif_ich, \
 384                 .enablebits     = {{0x41,0x80,0x80}, {0x43,0x80,0x80}}, \
 385                 .host_flags     = IDE_HFLAGS_PIIX, \
 386                 .pio_mask       = ATA_PIO4, \
 387                 .swdma_mask     = ATA_SWDMA2_ONLY, \
 388                 .mwdma_mask     = ATA_MWDMA12_ONLY, \
 389                 .udma_mask      = udma, \
 390         }
 391
 392 static const struct ide_port_info piix_pci_info[] __devinitdata = {
 393         /*  0 */ DECLARE_PIIX_DEV("PIIXa",      0x00),  /* no udma */
 394         /*  1 */ DECLARE_PIIX_DEV("PIIXb",      0x00),  /* no udma */
 395
 396         /*  2 */
 397         {       /*
 398                  * MPIIX actually has only a single IDE channel mapped to
 399                  * the primary or secondary ports depending on the value
 400                  * of the bit 14 of the IDETIM register at offset 0x6c
 401                  */
 402                 .name           = "MPIIX",
 403                 .enablebits     = {{0x6d,0xc0,0x80}, {0x6d,0xc0,0xc0}},
 404                 .host_flags     = IDE_HFLAG_ISA_PORTS | IDE_HFLAG_NO_DMA |
 405                                   IDE_HFLAGS_PIIX,
 406                 .pio_mask       = ATA_PIO4,
 407                 /* This is a painful system best to let it self tune for now */
 408         },
 409
 410         /*  3 */ DECLARE_PIIX_DEV("PIIX3",      0x00),  /* no udma */
 411         /*  4 */ DECLARE_PIIX_DEV("PIIX4",      ATA_UDMA2),
 412         /*  5 */ DECLARE_ICH_DEV("ICH0",        ATA_UDMA2),
 413         /*  6 */ DECLARE_PIIX_DEV("PIIX4",      ATA_UDMA2),
 414         /*  7 */ DECLARE_ICH_DEV("ICH",         ATA_UDMA4),
 415         /*  8 */ DECLARE_PIIX_DEV("PIIX4",      ATA_UDMA4),
 416         /*  9 */ DECLARE_PIIX_DEV("PIIX4",      ATA_UDMA2),
 417         /* 10 */ DECLARE_ICH_DEV("ICH2",        ATA_UDMA5),
 418         /* 11 */ DECLARE_ICH_DEV("ICH2M",       ATA_UDMA5),
 419         /* 12 */ DECLARE_ICH_DEV("ICH3M",       ATA_UDMA5),
 420         /* 13 */ DECLARE_ICH_DEV("ICH3",        ATA_UDMA5),
 421         /* 14 */ DECLARE_ICH_DEV("ICH4",        ATA_UDMA5),
 422         /* 15 */ DECLARE_ICH_DEV("ICH5",        ATA_UDMA5),
 423         /* 16 */ DECLARE_ICH_DEV("C-ICH",       ATA_UDMA5),
 424         /* 17 */ DECLARE_ICH_DEV("ICH4",        ATA_UDMA5),
 425         /* 18 */ DECLARE_ICH_DEV("ICH5-SATA",   ATA_UDMA5),
 426         /* 19 */ DECLARE_ICH_DEV("ICH5",        ATA_UDMA5),
 427         /* 20 */ DECLARE_ICH_DEV("ICH6",        ATA_UDMA5),
 428         /* 21 */ DECLARE_ICH_DEV("ICH7",        ATA_UDMA5),
 429         /* 22 */ DECLARE_ICH_DEV("ICH4",        ATA_UDMA5),
 430         /* 23 */ DECLARE_ICH_DEV("ESB2",        ATA_UDMA5),
 431         /* 24 */ DECLARE_ICH_DEV("ICH8M",       ATA_UDMA5),
 432 };
 433
 434 /**
 435  *      piix_init_one   -       called when a PIIX is found
 436  *      @dev: the piix device
 437  *      @id: the matching pci id
 438  *
 439  *      Called when the PCI registration layer (or the IDE initialization)
 440  *      finds a device matching our IDE device tables.
 441  */
 442
 443 static int __devinit piix_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 444 {
 445         return ide_setup_pci_device(dev, &piix_pci_info[id->driver_data]);
 446 }
 447
 448 /**
 449  *      piix_check_450nx        -       Check for problem 450NX setup
 450  *
 451  *      Check for the present of 450NX errata #19 and errata #25. If
 452  *      they are found, disable use of DMA IDE
 453  */
 454
 455 static void __devinit piix_check_450nx(void)
 456 {
 457         struct pci_dev *pdev = NULL;
 458         u16 cfg;
 459         while((pdev=pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev))!=NULL)
 460         {
 461                 /* Look for 450NX PXB. Check for problem configurations
 462                    A PCI quirk checks bit 6 already */
 463                 pci_read_config_word(pdev, 0x41, &cfg);
 464                 /* Only on the original revision: IDE DMA can hang */
 465                 if (pdev->revision == 0x00)
 466                         no_piix_dma = 1;
 467                 /* On all revisions below 5 PXB bus lock must be disabled for IDE */
 468                 else if (cfg & (1<<14) && pdev->revision < 5)
 469                         no_piix_dma = 2;
 470         }
 471         if(no_piix_dma)
 472                 printk(KERN_WARNING "piix: 450NX errata present, disabling IDE DMA.\n");
 473         if(no_piix_dma == 2)
 474                 printk(KERN_WARNING "piix: A BIOS update may resolve this.\n");
 475 }
 476
 477 static const struct pci_device_id piix_pci_tbl[] = {
 478         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82371FB_0),   0 },
 479         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82371FB_1),   1 },
 480         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82371MX),     2 },
 481         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82371SB_1),   3 },
 482         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82371AB),     4 },
 483         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801AB_1),   5 },
 484         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82443MX_1),   6 },
 485         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801AA_1),   7 },
 486         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82372FB_1),   8 },
 487         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82451NX),     9 },
 488         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801BA_9),  10 },
 489         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801BA_8),  11 },
 490         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801CA_10), 12 },
 491         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801CA_11), 13 },
 492         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801DB_11), 14 },
 493         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801EB_11), 15 },
 494         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801E_11),  16 },
 495         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801DB_10), 17 },
 496 #ifdef CONFIG_BLK_DEV_IDE_SATA
 497         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801EB_1),  18 },
 498 #endif
 499         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_ESB_2),      19 },
 500         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_ICH6_19),    20 },
 501         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_ICH7_21),    21 },
 502         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_82801DB_1),  22 },
 503         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_ESB2_18),    23 },
 504         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_ICH8_6),     24 },
 505         { 0, },
 506 };
 507 MODULE_DEVICE_TABLE(pci, piix_pci_tbl);
 508
 509 static struct pci_driver driver = {
 510         .name           = "PIIX_IDE",
 511         .id_table       = piix_pci_tbl,
 512         .probe          = piix_init_one,
 513 };
 514
 515 static int __init piix_ide_init(void)
 516 {
 517         piix_check_450nx();
 518         return ide_pci_register_driver(&driver);
 519 }
 520
 521 module_init(piix_ide_init);
 522
 523 MODULE_AUTHOR("Andre Hedrick, Andrzej Krzysztofowicz");
 524 MODULE_DESCRIPTION("PCI driver module for Intel PIIX IDE");
 525 MODULE_LICENSE("GPL");