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   1 /*
   2  *  linux/drivers/ide/pci/pdc202xx_old.c        Version 0.36    Sept 11, 2002
   3  *
   4  *  Copyright (C) 1998-2002             Andre Hedrick <andre@linux-ide.org>
   5  *
   6  *  Promise Ultra33 cards with BIOS v1.20 through 1.28 will need this
   7  *  compiled into the kernel if you have more than one card installed.
   8  *  Note that BIOS v1.29 is reported to fix the problem.  Since this is
   9  *  safe chipset tuning, including this support is harmless
  10  *
  11  *  Promise Ultra66 cards with BIOS v1.11 this
  12  *  compiled into the kernel if you have more than one card installed.
  13  *
  14  *  Promise Ultra100 cards.
  15  *
  16  *  The latest chipset code will support the following ::
  17  *  Three Ultra33 controllers and 12 drives.
  18  *  8 are UDMA supported and 4 are limited to DMA mode 2 multi-word.
  19  *  The 8/4 ratio is a BIOS code limit by promise.
  20  *
  21  *  UNLESS you enable "CONFIG_PDC202XX_BURST"
  22  *
  23  */
  24
  25 /*
  26  *  Portions Copyright (C) 1999 Promise Technology, Inc.
  27  *  Author: Frank Tiernan (frankt@promise.com)
  28  *  Released under terms of General Public License
  29  */
  30
  31 #include <linux/types.h>
  32 #include <linux/module.h>
  33 #include <linux/kernel.h>
  34 #include <linux/delay.h>
  35 #include <linux/timer.h>
  36 #include <linux/mm.h>
  37 #include <linux/ioport.h>
  38 #include <linux/blkdev.h>
  39 #include <linux/hdreg.h>
  40 #include <linux/interrupt.h>
  41 #include <linux/pci.h>
  42 #include <linux/init.h>
  43 #include <linux/ide.h>
  44
  45 #include <asm/io.h>
  46 #include <asm/irq.h>
  47
  48 #define PDC202_DEBUG_CABLE              0
  49 #define PDC202XX_DEBUG_DRIVE_INFO       0
  50
  51 static const char *pdc_quirk_drives[] = {
  52         "QUANTUM FIREBALLlct08 08",
  53         "QUANTUM FIREBALLP KA6.4",
  54         "QUANTUM FIREBALLP KA9.1",
  55         "QUANTUM FIREBALLP LM20.4",
  56         "QUANTUM FIREBALLP KX13.6",
  57         "QUANTUM FIREBALLP KX20.5",
  58         "QUANTUM FIREBALLP KX27.3",
  59         "QUANTUM FIREBALLP LM20.5",
  60         NULL
  61 };
  62
  63 /* A Register */
  64 #define SYNC_ERRDY_EN   0xC0
  65
  66 #define SYNC_IN         0x80    /* control bit, different for master vs. slave drives */
  67 #define ERRDY_EN        0x40    /* control bit, different for master vs. slave drives */
  68 #define IORDY_EN        0x20    /* PIO: IOREADY */
  69 #define PREFETCH_EN     0x10    /* PIO: PREFETCH */
  70
  71 #define PA3             0x08    /* PIO"A" timing */
  72 #define PA2             0x04    /* PIO"A" timing */
  73 #define PA1             0x02    /* PIO"A" timing */
  74 #define PA0             0x01    /* PIO"A" timing */
  75
  76 /* B Register */
  77
  78 #define MB2             0x80    /* DMA"B" timing */
  79 #define MB1             0x40    /* DMA"B" timing */
  80 #define MB0             0x20    /* DMA"B" timing */
  81
  82 #define PB4             0x10    /* PIO_FORCE 1:0 */
  83
  84 #define PB3             0x08    /* PIO"B" timing */     /* PIO flow Control mode */
  85 #define PB2             0x04    /* PIO"B" timing */     /* PIO 4 */
  86 #define PB1             0x02    /* PIO"B" timing */     /* PIO 3 half */
  87 #define PB0             0x01    /* PIO"B" timing */     /* PIO 3 other half */
  88
  89 /* C Register */
  90 #define IORDYp_NO_SPEED 0x4F
  91 #define SPEED_DIS       0x0F
  92
  93 #define DMARQp          0x80
  94 #define IORDYp          0x40
  95 #define DMAR_EN         0x20
  96 #define DMAW_EN         0x10
  97
  98 #define MC3             0x08    /* DMA"C" timing */
  99 #define MC2             0x04    /* DMA"C" timing */
 100 #define MC1             0x02    /* DMA"C" timing */
 101 #define MC0             0x01    /* DMA"C" timing */
 102
 103 static u8 pdc202xx_ratemask (ide_drive_t *drive)
 104 {
 105         u8 mode;
 106
 107         switch(HWIF(drive)->pci_dev->device) {
 108                 case PCI_DEVICE_ID_PROMISE_20267:
 109                 case PCI_DEVICE_ID_PROMISE_20265:
 110                         mode = 3;
 111                         break;
 112                 case PCI_DEVICE_ID_PROMISE_20263:
 113                 case PCI_DEVICE_ID_PROMISE_20262:
 114                         mode = 2;
 115                         break;
 116                 case PCI_DEVICE_ID_PROMISE_20246:
 117                         return 1;
 118                 default:
 119                         return 0;
 120         }
 121         if (!eighty_ninty_three(drive))
 122                 mode = min(mode, (u8)1);
 123         return mode;
 124 }
 125
 126 static int check_in_drive_lists (ide_drive_t *drive, const char **list)
 127 {
 128         struct hd_driveid *id = drive->id;
 129
 130         if (pdc_quirk_drives == list) {
 131                 while (*list) {
 132                         if (strstr(id->model, *list++)) {
 133                                 return 2;
 134                         }
 135                 }
 136         } else {
 137                 while (*list) {
 138                         if (!strcmp(*list++,id->model)) {
 139                                 return 1;
 140                         }
 141                 }
 142         }
 143         return 0;
 144 }
 145
 146 static int pdc202xx_tune_chipset (ide_drive_t *drive, u8 xferspeed)
 147 {
 148         ide_hwif_t *hwif        = HWIF(drive);
 149         struct pci_dev *dev     = hwif->pci_dev;
 150         u8 drive_pci            = 0x60 + (drive->dn << 2);
 151         u8 speed        = ide_rate_filter(pdc202xx_ratemask(drive), xferspeed);
 152
 153         u32                     drive_conf;
 154         u8                      AP, BP, CP, DP;
 155         u8                      TA = 0, TB = 0, TC = 0;
 156
 157         if ((drive->media != ide_disk) && (speed < XFER_SW_DMA_0))
 158                 return -1;
 159
 160         pci_read_config_dword(dev, drive_pci, &drive_conf);
 161         pci_read_config_byte(dev, (drive_pci), &AP);
 162         pci_read_config_byte(dev, (drive_pci)|0x01, &BP);
 163         pci_read_config_byte(dev, (drive_pci)|0x02, &CP);
 164         pci_read_config_byte(dev, (drive_pci)|0x03, &DP);
 165
 166         if (speed < XFER_SW_DMA_0) {
 167                 if ((AP & 0x0F) || (BP & 0x07)) {
 168                         /* clear PIO modes of lower 8421 bits of A Register */
 169                         pci_write_config_byte(dev, (drive_pci), AP &~0x0F);
 170                         pci_read_config_byte(dev, (drive_pci), &AP);
 171
 172                         /* clear PIO modes of lower 421 bits of B Register */
 173                         pci_write_config_byte(dev, (drive_pci)|0x01, BP &~0x07);
 174                         pci_read_config_byte(dev, (drive_pci)|0x01, &BP);
 175
 176                         pci_read_config_byte(dev, (drive_pci), &AP);
 177                         pci_read_config_byte(dev, (drive_pci)|0x01, &BP);
 178                 }
 179         } else {
 180                 if ((BP & 0xF0) && (CP & 0x0F)) {
 181                         /* clear DMA modes of upper 842 bits of B Register */
 182                         /* clear PIO forced mode upper 1 bit of B Register */
 183                         pci_write_config_byte(dev, (drive_pci)|0x01, BP &~0xF0);
 184                         pci_read_config_byte(dev, (drive_pci)|0x01, &BP);
 185
 186                         /* clear DMA modes of lower 8421 bits of C Register */
 187                         pci_write_config_byte(dev, (drive_pci)|0x02, CP &~0x0F);
 188                         pci_read_config_byte(dev, (drive_pci)|0x02, &CP);
 189                 }
 190         }
 191
 192         pci_read_config_byte(dev, (drive_pci), &AP);
 193         pci_read_config_byte(dev, (drive_pci)|0x01, &BP);
 194         pci_read_config_byte(dev, (drive_pci)|0x02, &CP);
 195
 196         switch(speed) {
 197                 case XFER_UDMA_6:       speed = XFER_UDMA_5;
 198                 case XFER_UDMA_5:
 199                 case XFER_UDMA_4:       TB = 0x20; TC = 0x01; break;
 200                 case XFER_UDMA_2:       TB = 0x20; TC = 0x01; break;
 201                 case XFER_UDMA_3:
 202                 case XFER_UDMA_1:       TB = 0x40; TC = 0x02; break;
 203                 case XFER_UDMA_0:
 204                 case XFER_MW_DMA_2:     TB = 0x60; TC = 0x03; break;
 205                 case XFER_MW_DMA_1:     TB = 0x60; TC = 0x04; break;
 206                 case XFER_MW_DMA_0:
 207                 case XFER_SW_DMA_2:     TB = 0x60; TC = 0x05; break;
 208                 case XFER_SW_DMA_1:     TB = 0x80; TC = 0x06; break;
 209                 case XFER_SW_DMA_0:     TB = 0xC0; TC = 0x0B; break;
 210                 case XFER_PIO_4:        TA = 0x01; TB = 0x04; break;
 211                 case XFER_PIO_3:        TA = 0x02; TB = 0x06; break;
 212                 case XFER_PIO_2:        TA = 0x03; TB = 0x08; break;
 213                 case XFER_PIO_1:        TA = 0x05; TB = 0x0C; break;
 214                 case XFER_PIO_0:
 215                 default:                TA = 0x09; TB = 0x13; break;
 216         }
 217
 218         if (speed < XFER_SW_DMA_0) {
 219                 pci_write_config_byte(dev, (drive_pci), AP|TA);
 220                 pci_write_config_byte(dev, (drive_pci)|0x01, BP|TB);
 221         } else {
 222                 pci_write_config_byte(dev, (drive_pci)|0x01, BP|TB);
 223                 pci_write_config_byte(dev, (drive_pci)|0x02, CP|TC);
 224         }
 225
 226 #if PDC202XX_DEBUG_DRIVE_INFO
 227         printk(KERN_DEBUG "%s: %s drive%d 0x%08x ",
 228                 drive->name, ide_xfer_verbose(speed),
 229                 drive->dn, drive_conf);
 230                 pci_read_config_dword(dev, drive_pci, &drive_conf);
 231         printk("0x%08x\n", drive_conf);
 232 #endif /* PDC202XX_DEBUG_DRIVE_INFO */
 233
 234         return (ide_config_drive_speed(drive, speed));
 235 }
 236
 237
 238 /*   0    1    2    3    4    5    6   7   8
 239  * 960, 480, 390, 300, 240, 180, 120, 90, 60
 240  *           180, 150, 120,  90,  60
 241  * DMA_Speed
 242  * 180, 120,  90,  90,  90,  60,  30
 243  *  11,   5,   4,   3,   2,   1,   0
 244  */
 245 static void config_chipset_for_pio (ide_drive_t *drive, u8 pio)
 246 {
 247         u8 speed = 0;
 248
 249         if (pio == 5) pio = 4;
 250         speed = XFER_PIO_0 + ide_get_best_pio_mode(drive, 255, pio, NULL);
 251
 252         pdc202xx_tune_chipset(drive, speed);
 253 }
 254
 255 static u8 pdc202xx_old_cable_detect (ide_hwif_t *hwif)
 256 {
 257         u16 CIS = 0, mask = (hwif->channel) ? (1<<11) : (1<<10);
 258         pci_read_config_word(hwif->pci_dev, 0x50, &CIS);
 259         return (CIS & mask) ? 1 : 0;
 260 }
 261
 262 /*
 263  * Set the control register to use the 66MHz system
 264  * clock for UDMA 3/4/5 mode operation when necessary.
 265  *
 266  * It may also be possible to leave the 66MHz clock on
 267  * and readjust the timing parameters.
 268  */
 269 static void pdc_old_enable_66MHz_clock(ide_hwif_t *hwif)
 270 {
 271         unsigned long clock_reg = hwif->dma_master + 0x11;
 272         u8 clock = hwif->INB(clock_reg);
 273
 274         hwif->OUTB(clock | (hwif->channel ? 0x08 : 0x02), clock_reg);
 275 }
 276
 277 static void pdc_old_disable_66MHz_clock(ide_hwif_t *hwif)
 278 {
 279         unsigned long clock_reg = hwif->dma_master + 0x11;
 280         u8 clock = hwif->INB(clock_reg);
 281
 282         hwif->OUTB(clock & ~(hwif->channel ? 0x08 : 0x02), clock_reg);
 283 }
 284
 285 static int config_chipset_for_dma (ide_drive_t *drive)
 286 {
 287         struct hd_driveid *id   = drive->id;
 288         ide_hwif_t *hwif        = HWIF(drive);
 289         struct pci_dev *dev     = hwif->pci_dev;
 290         u32 drive_conf          = 0;
 291         u8 drive_pci            = 0x60 + (drive->dn << 2);
 292         u8 test1 = 0, test2 = 0, speed = -1;
 293         u8 AP = 0, cable = 0;
 294
 295         u8 ultra_66             = ((id->dma_ultra & 0x0010) ||
 296                                    (id->dma_ultra & 0x0008)) ? 1 : 0;
 297
 298         if (dev->device != PCI_DEVICE_ID_PROMISE_20246)
 299                 cable = pdc202xx_old_cable_detect(hwif);
 300         else
 301                 ultra_66 = 0;
 302
 303         if (ultra_66 && cable) {
 304                 printk(KERN_WARNING "Warning: %s channel requires an 80-pin cable for operation.\n", hwif->channel ? "Secondary":"Primary");
 305                 printk(KERN_WARNING "%s reduced to Ultra33 mode.\n", drive->name);
 306         }
 307
 308         if (dev->device != PCI_DEVICE_ID_PROMISE_20246)
 309                 pdc_old_disable_66MHz_clock(drive->hwif);
 310
 311         drive_pci = 0x60 + (drive->dn << 2);
 312         pci_read_config_dword(dev, drive_pci, &drive_conf);
 313         if ((drive_conf != 0x004ff304) && (drive_conf != 0x004ff3c4))
 314                 goto chipset_is_set;
 315
 316         pci_read_config_byte(dev, drive_pci, &test1);
 317         if (!(test1 & SYNC_ERRDY_EN)) {
 318                 if (drive->select.b.unit & 0x01) {
 319                         pci_read_config_byte(dev, drive_pci - 4, &test2);
 320                         if ((test2 & SYNC_ERRDY_EN) &&
 321                             !(test1 & SYNC_ERRDY_EN)) {
 322                                 pci_write_config_byte(dev, drive_pci,
 323                                         test1|SYNC_ERRDY_EN);
 324                         }
 325                 } else {
 326                         pci_write_config_byte(dev, drive_pci,
 327                                 test1|SYNC_ERRDY_EN);
 328                 }
 329         }
 330
 331 chipset_is_set:
 332
 333         if (drive->media == ide_disk) {
 334                 pci_read_config_byte(dev, (drive_pci), &AP);
 335                 if (id->capability & 4) /* IORDY_EN */
 336                         pci_write_config_byte(dev, (drive_pci), AP|IORDY_EN);
 337                 pci_read_config_byte(dev, (drive_pci), &AP);
 338                 if (drive->media == ide_disk)   /* PREFETCH_EN */
 339                         pci_write_config_byte(dev, (drive_pci), AP|PREFETCH_EN);
 340         }
 341
 342         speed = ide_dma_speed(drive, pdc202xx_ratemask(drive));
 343
 344         if (!(speed)) {
 345                 /* restore original pci-config space */
 346                 pci_write_config_dword(dev, drive_pci, drive_conf);
 347                 return 0;
 348         }
 349
 350         (void) hwif->speedproc(drive, speed);
 351         return ide_dma_enable(drive);
 352 }
 353
 354 static int pdc202xx_config_drive_xfer_rate (ide_drive_t *drive)
 355 {
 356         ide_hwif_t *hwif        = HWIF(drive);
 357         struct hd_driveid *id   = drive->id;
 358
 359         drive->init_speed = 0;
 360
 361         if (id && (id->capability & 1) && drive->autodma) {
 362
 363                 if (ide_use_dma(drive)) {
 364                         if (config_chipset_for_dma(drive))
 365                                 return hwif->ide_dma_on(drive);
 366                 }
 367
 368                 goto fast_ata_pio;
 369
 370         } else if ((id->capability & 8) || (id->field_valid & 2)) {
 371 fast_ata_pio:
 372                 hwif->tuneproc(drive, 5);
 373                 return hwif->ide_dma_off_quietly(drive);
 374         }
 375         /* IORDY not supported */
 376         return 0;
 377 }
 378
 379 static int pdc202xx_quirkproc (ide_drive_t *drive)
 380 {
 381         return ((int) check_in_drive_lists(drive, pdc_quirk_drives));
 382 }
 383
 384 static void pdc202xx_old_ide_dma_start(ide_drive_t *drive)
 385 {
 386         if (drive->current_speed > XFER_UDMA_2)
 387                 pdc_old_enable_66MHz_clock(drive->hwif);
 388         if (drive->addressing == 1) {
 389                 struct request *rq      = HWGROUP(drive)->rq;
 390                 ide_hwif_t *hwif        = HWIF(drive);
 391                 unsigned long high_16   = hwif->dma_master;
 392                 unsigned long atapi_reg = high_16 + (hwif->channel ? 0x24 : 0x20);
 393                 u32 word_count  = 0;
 394                 u8 clock = hwif->INB(high_16 + 0x11);
 395
 396                 hwif->OUTB(clock|(hwif->channel ? 0x08 : 0x02), high_16+0x11);
 397                 word_count = (rq->nr_sectors << 8);
 398                 word_count = (rq_data_dir(rq) == READ) ?
 399                                         word_count | 0x05000000 :
 400                                         word_count | 0x06000000;
 401                 hwif->OUTL(word_count, atapi_reg);
 402         }
 403         ide_dma_start(drive);
 404 }
 405
 406 static int pdc202xx_old_ide_dma_end(ide_drive_t *drive)
 407 {
 408         if (drive->addressing == 1) {
 409                 ide_hwif_t *hwif        = HWIF(drive);
 410                 unsigned long high_16   = hwif->dma_master;
 411                 unsigned long atapi_reg = high_16 + (hwif->channel ? 0x24 : 0x20);
 412                 u8 clock                = 0;
 413
 414                 hwif->OUTL(0, atapi_reg); /* zero out extra */
 415                 clock = hwif->INB(high_16 + 0x11);
 416                 hwif->OUTB(clock & ~(hwif->channel ? 0x08:0x02), high_16+0x11);
 417         }
 418         if (drive->current_speed > XFER_UDMA_2)
 419                 pdc_old_disable_66MHz_clock(drive->hwif);
 420         return __ide_dma_end(drive);
 421 }
 422
 423 static int pdc202xx_old_ide_dma_test_irq(ide_drive_t *drive)
 424 {
 425         ide_hwif_t *hwif        = HWIF(drive);
 426         unsigned long high_16   = hwif->dma_master;
 427         u8 dma_stat             = hwif->INB(hwif->dma_status);
 428         u8 sc1d                 = hwif->INB((high_16 + 0x001d));
 429
 430         if (hwif->channel) {
 431                 /* bit7: Error, bit6: Interrupting, bit5: FIFO Full, bit4: FIFO Empty */
 432                 if ((sc1d & 0x50) == 0x50)
 433                         goto somebody_else;
 434                 else if ((sc1d & 0x40) == 0x40)
 435                         return (dma_stat & 4) == 4;
 436         } else {
 437                 /* bit3: Error, bit2: Interrupting, bit1: FIFO Full, bit0: FIFO Empty */
 438                 if ((sc1d & 0x05) == 0x05)
 439                         goto somebody_else;
 440                 else if ((sc1d & 0x04) == 0x04)
 441                         return (dma_stat & 4) == 4;
 442         }
 443 somebody_else:
 444         return (dma_stat & 4) == 4;     /* return 1 if INTR asserted */
 445 }
 446
 447 static int pdc202xx_ide_dma_lostirq(ide_drive_t *drive)
 448 {
 449         if (HWIF(drive)->resetproc != NULL)
 450                 HWIF(drive)->resetproc(drive);
 451         return __ide_dma_lostirq(drive);
 452 }
 453
 454 static int pdc202xx_ide_dma_timeout(ide_drive_t *drive)
 455 {
 456         if (HWIF(drive)->resetproc != NULL)
 457                 HWIF(drive)->resetproc(drive);
 458         return __ide_dma_timeout(drive);
 459 }
 460
 461 static void pdc202xx_reset_host (ide_hwif_t *hwif)
 462 {
 463         unsigned long high_16   = hwif->dma_master;
 464         u8 udma_speed_flag      = hwif->INB(high_16|0x001f);
 465
 466         hwif->OUTB((udma_speed_flag | 0x10), (high_16|0x001f));
 467         mdelay(100);
 468         hwif->OUTB((udma_speed_flag & ~0x10), (high_16|0x001f));
 469         mdelay(2000);   /* 2 seconds ?! */
 470
 471         printk(KERN_WARNING "PDC202XX: %s channel reset.\n",
 472                 hwif->channel ? "Secondary" : "Primary");
 473 }
 474
 475 static void pdc202xx_reset (ide_drive_t *drive)
 476 {
 477         ide_hwif_t *hwif        = HWIF(drive);
 478         ide_hwif_t *mate        = hwif->mate;
 479
 480         pdc202xx_reset_host(hwif);
 481         pdc202xx_reset_host(mate);
 482         hwif->tuneproc(drive, 5);
 483 }
 484
 485 static unsigned int __devinit init_chipset_pdc202xx(struct pci_dev *dev,
 486                                                         const char *name)
 487 {
 488         /* This doesn't appear needed */
 489         if (dev->resource[PCI_ROM_RESOURCE].start) {
 490                 pci_write_config_dword(dev, PCI_ROM_ADDRESS,
 491                         dev->resource[PCI_ROM_RESOURCE].start | PCI_ROM_ADDRESS_ENABLE);
 492                 printk(KERN_INFO "%s: ROM enabled at 0x%08lx\n", name,
 493                         (unsigned long)dev->resource[PCI_ROM_RESOURCE].start);
 494         }
 495
 496         return dev->irq;
 497 }
 498
 499 static void __devinit init_hwif_pdc202xx(ide_hwif_t *hwif)
 500 {
 501         struct pci_dev *dev = hwif->pci_dev;
 502
 503         /* PDC20265 has problems with large LBA48 requests */
 504         if ((dev->device == PCI_DEVICE_ID_PROMISE_20267) ||
 505             (dev->device == PCI_DEVICE_ID_PROMISE_20265))
 506                 hwif->rqsize = 256;
 507
 508         hwif->autodma = 0;
 509         hwif->tuneproc  = &config_chipset_for_pio;
 510         hwif->quirkproc = &pdc202xx_quirkproc;
 511
 512         if (hwif->pci_dev->device != PCI_DEVICE_ID_PROMISE_20246)
 513                 hwif->resetproc = &pdc202xx_reset;
 514
 515         hwif->speedproc = &pdc202xx_tune_chipset;
 516
 517         hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
 518
 519         hwif->ultra_mask = 0x3f;
 520         hwif->mwdma_mask = 0x07;
 521         hwif->swdma_mask = 0x07;
 522
 523         hwif->err_stops_fifo = 1;
 524
 525         hwif->ide_dma_check = &pdc202xx_config_drive_xfer_rate;
 526         hwif->ide_dma_lostirq = &pdc202xx_ide_dma_lostirq;
 527         hwif->ide_dma_timeout = &pdc202xx_ide_dma_timeout;
 528
 529         if (hwif->pci_dev->device != PCI_DEVICE_ID_PROMISE_20246) {
 530                 if (!(hwif->udma_four))
 531                         hwif->udma_four = (pdc202xx_old_cable_detect(hwif)) ? 0 : 1;
 532                 hwif->dma_start = &pdc202xx_old_ide_dma_start;
 533                 hwif->ide_dma_end = &pdc202xx_old_ide_dma_end;
 534         }
 535         hwif->ide_dma_test_irq = &pdc202xx_old_ide_dma_test_irq;
 536
 537         if (!noautodma)
 538                 hwif->autodma = 1;
 539         hwif->drives[0].autodma = hwif->drives[1].autodma = hwif->autodma;
 540 #if PDC202_DEBUG_CABLE
 541         printk(KERN_DEBUG "%s: %s-pin cable\n",
 542                 hwif->name, hwif->udma_four ? "80" : "40");
 543 #endif /* PDC202_DEBUG_CABLE */
 544 }
 545
 546 static void __devinit init_dma_pdc202xx(ide_hwif_t *hwif, unsigned long dmabase)
 547 {
 548         u8 udma_speed_flag = 0, primary_mode = 0, secondary_mode = 0;
 549
 550         if (hwif->channel) {
 551                 ide_setup_dma(hwif, dmabase, 8);
 552                 return;
 553         }
 554
 555         udma_speed_flag = hwif->INB((dmabase|0x1f));
 556         primary_mode    = hwif->INB((dmabase|0x1a));
 557         secondary_mode  = hwif->INB((dmabase|0x1b));
 558         printk(KERN_INFO "%s: (U)DMA Burst Bit %sABLED " \
 559                 "Primary %s Mode " \
 560                 "Secondary %s Mode.\n", hwif->cds->name,
 561                 (udma_speed_flag & 1) ? "EN" : "DIS",
 562                 (primary_mode & 1) ? "MASTER" : "PCI",
 563                 (secondary_mode & 1) ? "MASTER" : "PCI" );
 564
 565 #ifdef CONFIG_PDC202XX_BURST
 566         if (!(udma_speed_flag & 1)) {
 567                 printk(KERN_INFO "%s: FORCING BURST BIT 0x%02x->0x%02x ",
 568                         hwif->cds->name, udma_speed_flag,
 569                         (udma_speed_flag|1));
 570                 hwif->OUTB(udma_speed_flag|1,(dmabase|0x1f));
 571                 printk("%sACTIVE\n",
 572                         (hwif->INB(dmabase|0x1f)&1) ? "":"IN");
 573         }
 574 #endif /* CONFIG_PDC202XX_BURST */
 575 #ifdef CONFIG_PDC202XX_MASTER
 576         if (!(primary_mode & 1)) {
 577                 printk(KERN_INFO "%s: FORCING PRIMARY MODE BIT "
 578                         "0x%02x -> 0x%02x ", hwif->cds->name,
 579                         primary_mode, (primary_mode|1));
 580                 hwif->OUTB(primary_mode|1, (dmabase|0x1a));
 581                 printk("%s\n",
 582                         (hwif->INB((dmabase|0x1a)) & 1) ? "MASTER" : "PCI");
 583         }
 584
 585         if (!(secondary_mode & 1)) {
 586                 printk(KERN_INFO "%s: FORCING SECONDARY MODE BIT "
 587                         "0x%02x -> 0x%02x ", hwif->cds->name,
 588                         secondary_mode, (secondary_mode|1));
 589                 hwif->OUTB(secondary_mode|1, (dmabase|0x1b));
 590                 printk("%s\n",
 591                         (hwif->INB((dmabase|0x1b)) & 1) ? "MASTER" : "PCI");
 592         }
 593 #endif /* CONFIG_PDC202XX_MASTER */
 594
 595         ide_setup_dma(hwif, dmabase, 8);
 596 }
 597
 598 static int __devinit init_setup_pdc202ata4(struct pci_dev *dev,
 599                                            ide_pci_device_t *d)
 600 {
 601         if ((dev->class >> 8) != PCI_CLASS_STORAGE_IDE) {
 602                 u8 irq = 0, irq2 = 0;
 603                 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
 604                 /* 0xbc */
 605                 pci_read_config_byte(dev, (PCI_INTERRUPT_LINE)|0x80, &irq2);
 606                 if (irq != irq2) {
 607                         pci_write_config_byte(dev,
 608                                 (PCI_INTERRUPT_LINE)|0x80, irq);     /* 0xbc */
 609                         printk(KERN_INFO "%s: pci-config space interrupt "
 610                                 "mirror fixed.\n", d->name);
 611                 }
 612         }
 613         return ide_setup_pci_device(dev, d);
 614 }
 615
 616 static int __devinit init_setup_pdc20265(struct pci_dev *dev,
 617                                          ide_pci_device_t *d)
 618 {
 619         if ((dev->bus->self) &&
 620             (dev->bus->self->vendor == PCI_VENDOR_ID_INTEL) &&
 621             ((dev->bus->self->device == PCI_DEVICE_ID_INTEL_I960) ||
 622              (dev->bus->self->device == PCI_DEVICE_ID_INTEL_I960RM))) {
 623                 printk(KERN_INFO "ide: Skipping Promise PDC20265 "
 624                         "attached to I2O RAID controller.\n");
 625                 return -ENODEV;
 626         }
 627         return ide_setup_pci_device(dev, d);
 628 }
 629
 630 static int __devinit init_setup_pdc202xx(struct pci_dev *dev,
 631                                          ide_pci_device_t *d)
 632 {
 633         return ide_setup_pci_device(dev, d);
 634 }
 635
 636 static ide_pci_device_t pdc202xx_chipsets[] __devinitdata = {
 637         {       /* 0 */
 638                 .name           = "PDC20246",
 639                 .init_setup     = init_setup_pdc202ata4,
 640                 .init_chipset   = init_chipset_pdc202xx,
 641                 .init_hwif      = init_hwif_pdc202xx,
 642                 .init_dma       = init_dma_pdc202xx,
 643                 .channels       = 2,
 644                 .autodma        = AUTODMA,
 645                 .bootable       = OFF_BOARD,
 646                 .extra          = 16,
 647         },{     /* 1 */
 648                 .name           = "PDC20262",
 649                 .init_setup     = init_setup_pdc202ata4,
 650                 .init_chipset   = init_chipset_pdc202xx,
 651                 .init_hwif      = init_hwif_pdc202xx,
 652                 .init_dma       = init_dma_pdc202xx,
 653                 .channels       = 2,
 654                 .autodma        = AUTODMA,
 655                 .bootable       = OFF_BOARD,
 656                 .extra          = 48,
 657         },{     /* 2 */
 658                 .name           = "PDC20263",
 659                 .init_setup     = init_setup_pdc202ata4,
 660                 .init_chipset   = init_chipset_pdc202xx,
 661                 .init_hwif      = init_hwif_pdc202xx,
 662                 .init_dma       = init_dma_pdc202xx,
 663                 .channels       = 2,
 664                 .autodma        = AUTODMA,
 665                 .bootable       = OFF_BOARD,
 666                 .extra          = 48,
 667         },{     /* 3 */
 668                 .name           = "PDC20265",
 669                 .init_setup     = init_setup_pdc20265,
 670                 .init_chipset   = init_chipset_pdc202xx,
 671                 .init_hwif      = init_hwif_pdc202xx,
 672                 .init_dma       = init_dma_pdc202xx,
 673                 .channels       = 2,
 674                 .autodma        = AUTODMA,
 675                 .bootable       = OFF_BOARD,
 676                 .extra          = 48,
 677         },{     /* 4 */
 678                 .name           = "PDC20267",
 679                 .init_setup     = init_setup_pdc202xx,
 680                 .init_chipset   = init_chipset_pdc202xx,
 681                 .init_hwif      = init_hwif_pdc202xx,
 682                 .init_dma       = init_dma_pdc202xx,
 683                 .channels       = 2,
 684                 .autodma        = AUTODMA,
 685                 .bootable       = OFF_BOARD,
 686                 .extra          = 48,
 687         }
 688 };
 689
 690 /**
 691  *      pdc202xx_init_one       -       called when a PDC202xx is found
 692  *      @dev: the pdc202xx device
 693  *      @id: the matching pci id
 694  *
 695  *      Called when the PCI registration layer (or the IDE initialization)
 696  *      finds a device matching our IDE device tables.
 697  */
 698
 699 static int __devinit pdc202xx_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 700 {
 701         ide_pci_device_t *d = &pdc202xx_chipsets[id->driver_data];
 702
 703         return d->init_setup(dev, d);
 704 }
 705
 706 static struct pci_device_id pdc202xx_pci_tbl[] = {
 707         { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20246, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
 708         { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20262, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
 709         { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20263, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2},
 710         { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20265, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3},
 711         { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20267, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4},
 712         { 0, },
 713 };
 714 MODULE_DEVICE_TABLE(pci, pdc202xx_pci_tbl);
 715
 716 static struct pci_driver driver = {
 717         .name           = "Promise_Old_IDE",
 718         .id_table       = pdc202xx_pci_tbl,
 719         .probe          = pdc202xx_init_one,
 720 };
 721
 722 static int pdc202xx_ide_init(void)
 723 {
 724         return ide_pci_register_driver(&driver);
 725 }
 726
 727 module_init(pdc202xx_ide_init);
 728
 729 MODULE_AUTHOR("Andre Hedrick, Frank Tiernan");
 730 MODULE_DESCRIPTION("PCI driver module for older Promise IDE");
 731 MODULE_LICENSE("GPL");