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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/config.h>
  32 #include <linux/types.h>
  33 #include <linux/module.h>
  34 #include <linux/kernel.h>
  35 #include <linux/delay.h>
  36 #include <linux/timer.h>
  37 #include <linux/mm.h>
  38 #include <linux/ioport.h>
  39 #include <linux/blkdev.h>
  40 #include <linux/hdreg.h>
  41 #include <linux/interrupt.h>
  42 #include <linux/pci.h>
  43 #include <linux/init.h>
  44 #include <linux/ide.h>
  45
  46 #include <asm/io.h>
  47 #include <asm/irq.h>
  48
  49 #define PDC202_DEBUG_CABLE              0
  50 #define PDC202XX_DEBUG_DRIVE_INFO       0
  51
  52 static const char *pdc_quirk_drives[] = {
  53         "QUANTUM FIREBALLlct08 08",
  54         "QUANTUM FIREBALLP KA6.4",
  55         "QUANTUM FIREBALLP KA9.1",
  56         "QUANTUM FIREBALLP LM20.4",
  57         "QUANTUM FIREBALLP KX13.6",
  58         "QUANTUM FIREBALLP KX20.5",
  59         "QUANTUM FIREBALLP KX27.3",
  60         "QUANTUM FIREBALLP LM20.5",
  61         NULL
  62 };
  63
  64 /* A Register */
  65 #define SYNC_ERRDY_EN   0xC0
  66
  67 #define SYNC_IN         0x80    /* control bit, different for master vs. slave drives */
  68 #define ERRDY_EN        0x40    /* control bit, different for master vs. slave drives */
  69 #define IORDY_EN        0x20    /* PIO: IOREADY */
  70 #define PREFETCH_EN     0x10    /* PIO: PREFETCH */
  71
  72 #define PA3             0x08    /* PIO"A" timing */
  73 #define PA2             0x04    /* PIO"A" timing */
  74 #define PA1             0x02    /* PIO"A" timing */
  75 #define PA0             0x01    /* PIO"A" timing */
  76
  77 /* B Register */
  78
  79 #define MB2             0x80    /* DMA"B" timing */
  80 #define MB1             0x40    /* DMA"B" timing */
  81 #define MB0             0x20    /* DMA"B" timing */
  82
  83 #define PB4             0x10    /* PIO_FORCE 1:0 */
  84
  85 #define PB3             0x08    /* PIO"B" timing */     /* PIO flow Control mode */
  86 #define PB2             0x04    /* PIO"B" timing */     /* PIO 4 */
  87 #define PB1             0x02    /* PIO"B" timing */     /* PIO 3 half */
  88 #define PB0             0x01    /* PIO"B" timing */     /* PIO 3 other half */
  89
  90 /* C Register */
  91 #define IORDYp_NO_SPEED 0x4F
  92 #define SPEED_DIS       0x0F
  93
  94 #define DMARQp          0x80
  95 #define IORDYp          0x40
  96 #define DMAR_EN         0x20
  97 #define DMAW_EN         0x10
  98
  99 #define MC3             0x08    /* DMA"C" timing */
 100 #define MC2             0x04    /* DMA"C" timing */
 101 #define MC1             0x02    /* DMA"C" timing */
 102 #define MC0             0x01    /* DMA"C" timing */
 103
 104 #if 0
 105         unsigned long bibma  = pci_resource_start(dev, 4);
 106         u8 hi = 0, lo = 0;
 107
 108         u8 sc1c = inb_p((u16)bibma + 0x1c);
 109         u8 sc1e = inb_p((u16)bibma + 0x1e);
 110         u8 sc1f = inb_p((u16)bibma + 0x1f);
 111
 112         p += sprintf(p, "Host Mode                            : %s\n",
 113                 (sc1f & 0x08) ? "Tri-Stated" : "Normal");
 114         p += sprintf(p, "Bus Clocking                         : %s\n",
 115                 ((sc1f & 0xC0) == 0xC0) ? "100 External" :
 116                 ((sc1f & 0x80) == 0x80) ? "66 External" :
 117                 ((sc1f & 0x40) == 0x40) ? "33 External" : "33 PCI Internal");
 118         p += sprintf(p, "IO pad select                        : %s mA\n",
 119                 ((sc1c & 0x03) == 0x03) ? "10" :
 120                 ((sc1c & 0x02) == 0x02) ? "8" :
 121                 ((sc1c & 0x01) == 0x01) ? "6" :
 122                 ((sc1c & 0x00) == 0x00) ? "4" : "??");
 123         hi = sc1e >> 4;
 124         lo = sc1e & 0xf;
 125         p += sprintf(p, "Status Polling Period                : %d\n", hi);
 126         p += sprintf(p, "Interrupt Check Status Polling Delay : %d\n", lo);
 127 #endif
 128
 129 static u8 pdc202xx_ratemask (ide_drive_t *drive)
 130 {
 131         u8 mode;
 132
 133         switch(HWIF(drive)->pci_dev->device) {
 134                 case PCI_DEVICE_ID_PROMISE_20267:
 135                 case PCI_DEVICE_ID_PROMISE_20265:
 136                         mode = 3;
 137                         break;
 138                 case PCI_DEVICE_ID_PROMISE_20263:
 139                 case PCI_DEVICE_ID_PROMISE_20262:
 140                         mode = 2;
 141                         break;
 142                 case PCI_DEVICE_ID_PROMISE_20246:
 143                         return 1;
 144                 default:
 145                         return 0;
 146         }
 147         if (!eighty_ninty_three(drive))
 148                 mode = min(mode, (u8)1);
 149         return mode;
 150 }
 151
 152 static int check_in_drive_lists (ide_drive_t *drive, const char **list)
 153 {
 154         struct hd_driveid *id = drive->id;
 155
 156         if (pdc_quirk_drives == list) {
 157                 while (*list) {
 158                         if (strstr(id->model, *list++)) {
 159                                 return 2;
 160                         }
 161                 }
 162         } else {
 163                 while (*list) {
 164                         if (!strcmp(*list++,id->model)) {
 165                                 return 1;
 166                         }
 167                 }
 168         }
 169         return 0;
 170 }
 171
 172 static int pdc202xx_tune_chipset (ide_drive_t *drive, u8 xferspeed)
 173 {
 174         ide_hwif_t *hwif        = HWIF(drive);
 175         struct pci_dev *dev     = hwif->pci_dev;
 176         u8 drive_pci            = 0x60 + (drive->dn << 2);
 177         u8 speed        = ide_rate_filter(pdc202xx_ratemask(drive), xferspeed);
 178
 179         u32                     drive_conf;
 180         u8                      AP, BP, CP, DP;
 181         u8                      TA = 0, TB = 0, TC = 0;
 182
 183         if ((drive->media != ide_disk) && (speed < XFER_SW_DMA_0))
 184                 return -1;
 185
 186         pci_read_config_dword(dev, drive_pci, &drive_conf);
 187         pci_read_config_byte(dev, (drive_pci), &AP);
 188         pci_read_config_byte(dev, (drive_pci)|0x01, &BP);
 189         pci_read_config_byte(dev, (drive_pci)|0x02, &CP);
 190         pci_read_config_byte(dev, (drive_pci)|0x03, &DP);
 191
 192         if (speed < XFER_SW_DMA_0) {
 193                 if ((AP & 0x0F) || (BP & 0x07)) {
 194                         /* clear PIO modes of lower 8421 bits of A Register */
 195                         pci_write_config_byte(dev, (drive_pci), AP &~0x0F);
 196                         pci_read_config_byte(dev, (drive_pci), &AP);
 197
 198                         /* clear PIO modes of lower 421 bits of B Register */
 199                         pci_write_config_byte(dev, (drive_pci)|0x01, BP &~0x07);
 200                         pci_read_config_byte(dev, (drive_pci)|0x01, &BP);
 201
 202                         pci_read_config_byte(dev, (drive_pci), &AP);
 203                         pci_read_config_byte(dev, (drive_pci)|0x01, &BP);
 204                 }
 205         } else {
 206                 if ((BP & 0xF0) && (CP & 0x0F)) {
 207                         /* clear DMA modes of upper 842 bits of B Register */
 208                         /* clear PIO forced mode upper 1 bit of B Register */
 209                         pci_write_config_byte(dev, (drive_pci)|0x01, BP &~0xF0);
 210                         pci_read_config_byte(dev, (drive_pci)|0x01, &BP);
 211
 212                         /* clear DMA modes of lower 8421 bits of C Register */
 213                         pci_write_config_byte(dev, (drive_pci)|0x02, CP &~0x0F);
 214                         pci_read_config_byte(dev, (drive_pci)|0x02, &CP);
 215                 }
 216         }
 217
 218         pci_read_config_byte(dev, (drive_pci), &AP);
 219         pci_read_config_byte(dev, (drive_pci)|0x01, &BP);
 220         pci_read_config_byte(dev, (drive_pci)|0x02, &CP);
 221
 222         switch(speed) {
 223                 case XFER_UDMA_6:       speed = XFER_UDMA_5;
 224                 case XFER_UDMA_5:
 225                 case XFER_UDMA_4:       TB = 0x20; TC = 0x01; break;
 226                 case XFER_UDMA_2:       TB = 0x20; TC = 0x01; break;
 227                 case XFER_UDMA_3:
 228                 case XFER_UDMA_1:       TB = 0x40; TC = 0x02; break;
 229                 case XFER_UDMA_0:
 230                 case XFER_MW_DMA_2:     TB = 0x60; TC = 0x03; break;
 231                 case XFER_MW_DMA_1:     TB = 0x60; TC = 0x04; break;
 232                 case XFER_MW_DMA_0:
 233                 case XFER_SW_DMA_2:     TB = 0x60; TC = 0x05; break;
 234                 case XFER_SW_DMA_1:     TB = 0x80; TC = 0x06; break;
 235                 case XFER_SW_DMA_0:     TB = 0xC0; TC = 0x0B; break;
 236                 case XFER_PIO_4:        TA = 0x01; TB = 0x04; break;
 237                 case XFER_PIO_3:        TA = 0x02; TB = 0x06; break;
 238                 case XFER_PIO_2:        TA = 0x03; TB = 0x08; break;
 239                 case XFER_PIO_1:        TA = 0x05; TB = 0x0C; break;
 240                 case XFER_PIO_0:
 241                 default:                TA = 0x09; TB = 0x13; break;
 242         }
 243
 244         if (speed < XFER_SW_DMA_0) {
 245                 pci_write_config_byte(dev, (drive_pci), AP|TA);
 246                 pci_write_config_byte(dev, (drive_pci)|0x01, BP|TB);
 247         } else {
 248                 pci_write_config_byte(dev, (drive_pci)|0x01, BP|TB);
 249                 pci_write_config_byte(dev, (drive_pci)|0x02, CP|TC);
 250         }
 251
 252 #if PDC202XX_DEBUG_DRIVE_INFO
 253         printk(KERN_DEBUG "%s: %s drive%d 0x%08x ",
 254                 drive->name, ide_xfer_verbose(speed),
 255                 drive->dn, drive_conf);
 256                 pci_read_config_dword(dev, drive_pci, &drive_conf);
 257         printk("0x%08x\n", drive_conf);
 258 #endif /* PDC202XX_DEBUG_DRIVE_INFO */
 259
 260         return (ide_config_drive_speed(drive, speed));
 261 }
 262
 263
 264 /*   0    1    2    3    4    5    6   7   8
 265  * 960, 480, 390, 300, 240, 180, 120, 90, 60
 266  *           180, 150, 120,  90,  60
 267  * DMA_Speed
 268  * 180, 120,  90,  90,  90,  60,  30
 269  *  11,   5,   4,   3,   2,   1,   0
 270  */
 271 static void config_chipset_for_pio (ide_drive_t *drive, u8 pio)
 272 {
 273         u8 speed = 0;
 274
 275         if (pio == 5) pio = 4;
 276         speed = XFER_PIO_0 + ide_get_best_pio_mode(drive, 255, pio, NULL);
 277
 278         pdc202xx_tune_chipset(drive, speed);
 279 }
 280
 281 static u8 pdc202xx_old_cable_detect (ide_hwif_t *hwif)
 282 {
 283         u16 CIS = 0, mask = (hwif->channel) ? (1<<11) : (1<<10);
 284         pci_read_config_word(hwif->pci_dev, 0x50, &CIS);
 285         return (CIS & mask) ? 1 : 0;
 286 }
 287
 288 /*
 289  * Set the control register to use the 66MHz system
 290  * clock for UDMA 3/4/5 mode operation when necessary.
 291  *
 292  * It may also be possible to leave the 66MHz clock on
 293  * and readjust the timing parameters.
 294  */
 295 static void pdc_old_enable_66MHz_clock(ide_hwif_t *hwif)
 296 {
 297         unsigned long clock_reg = hwif->dma_master + 0x11;
 298         u8 clock = hwif->INB(clock_reg);
 299
 300         hwif->OUTB(clock | (hwif->channel ? 0x08 : 0x02), clock_reg);
 301 }
 302
 303 static void pdc_old_disable_66MHz_clock(ide_hwif_t *hwif)
 304 {
 305         unsigned long clock_reg = hwif->dma_master + 0x11;
 306         u8 clock = hwif->INB(clock_reg);
 307
 308         hwif->OUTB(clock & ~(hwif->channel ? 0x08 : 0x02), clock_reg);
 309 }
 310
 311 static int config_chipset_for_dma (ide_drive_t *drive)
 312 {
 313         struct hd_driveid *id   = drive->id;
 314         ide_hwif_t *hwif        = HWIF(drive);
 315         struct pci_dev *dev     = hwif->pci_dev;
 316         u32 drive_conf          = 0;
 317         u8 drive_pci            = 0x60 + (drive->dn << 2);
 318         u8 test1 = 0, test2 = 0, speed = -1;
 319         u8 AP = 0, cable = 0;
 320
 321         u8 ultra_66             = ((id->dma_ultra & 0x0010) ||
 322                                    (id->dma_ultra & 0x0008)) ? 1 : 0;
 323
 324         if (dev->device != PCI_DEVICE_ID_PROMISE_20246)
 325                 cable = pdc202xx_old_cable_detect(hwif);
 326         else
 327                 ultra_66 = 0;
 328
 329         if (ultra_66 && cable) {
 330                 printk(KERN_WARNING "Warning: %s channel requires an 80-pin cable for operation.\n", hwif->channel ? "Secondary":"Primary");
 331                 printk(KERN_WARNING "%s reduced to Ultra33 mode.\n", drive->name);
 332         }
 333
 334         if (dev->device != PCI_DEVICE_ID_PROMISE_20246)
 335                 pdc_old_disable_66MHz_clock(drive->hwif);
 336
 337         drive_pci = 0x60 + (drive->dn << 2);
 338         pci_read_config_dword(dev, drive_pci, &drive_conf);
 339         if ((drive_conf != 0x004ff304) && (drive_conf != 0x004ff3c4))
 340                 goto chipset_is_set;
 341
 342         pci_read_config_byte(dev, drive_pci, &test1);
 343         if (!(test1 & SYNC_ERRDY_EN)) {
 344                 if (drive->select.b.unit & 0x01) {
 345                         pci_read_config_byte(dev, drive_pci - 4, &test2);
 346                         if ((test2 & SYNC_ERRDY_EN) &&
 347                             !(test1 & SYNC_ERRDY_EN)) {
 348                                 pci_write_config_byte(dev, drive_pci,
 349                                         test1|SYNC_ERRDY_EN);
 350                         }
 351                 } else {
 352                         pci_write_config_byte(dev, drive_pci,
 353                                 test1|SYNC_ERRDY_EN);
 354                 }
 355         }
 356
 357 chipset_is_set:
 358
 359         if (drive->media == ide_disk) {
 360                 pci_read_config_byte(dev, (drive_pci), &AP);
 361                 if (id->capability & 4) /* IORDY_EN */
 362                         pci_write_config_byte(dev, (drive_pci), AP|IORDY_EN);
 363                 pci_read_config_byte(dev, (drive_pci), &AP);
 364                 if (drive->media == ide_disk)   /* PREFETCH_EN */
 365                         pci_write_config_byte(dev, (drive_pci), AP|PREFETCH_EN);
 366         }
 367
 368         speed = ide_dma_speed(drive, pdc202xx_ratemask(drive));
 369
 370         if (!(speed)) {
 371                 /* restore original pci-config space */
 372                 pci_write_config_dword(dev, drive_pci, drive_conf);
 373                 hwif->tuneproc(drive, 5);
 374                 return 0;
 375         }
 376
 377         (void) hwif->speedproc(drive, speed);
 378         return ide_dma_enable(drive);
 379 }
 380
 381 static int pdc202xx_config_drive_xfer_rate (ide_drive_t *drive)
 382 {
 383         ide_hwif_t *hwif        = HWIF(drive);
 384         struct hd_driveid *id   = drive->id;
 385
 386         drive->init_speed = 0;
 387
 388         if (id && (id->capability & 1) && drive->autodma) {
 389
 390                 if (ide_use_dma(drive)) {
 391                         if (config_chipset_for_dma(drive))
 392                                 return hwif->ide_dma_on(drive);
 393                 }
 394
 395                 goto fast_ata_pio;
 396
 397         } else if ((id->capability & 8) || (id->field_valid & 2)) {
 398 fast_ata_pio:
 399                 hwif->tuneproc(drive, 5);
 400                 return hwif->ide_dma_off_quietly(drive);
 401         }
 402         /* IORDY not supported */
 403         return 0;
 404 }
 405
 406 static int pdc202xx_quirkproc (ide_drive_t *drive)
 407 {
 408         return ((int) check_in_drive_lists(drive, pdc_quirk_drives));
 409 }
 410
 411 static void pdc202xx_old_ide_dma_start(ide_drive_t *drive)
 412 {
 413         if (drive->current_speed > XFER_UDMA_2)
 414                 pdc_old_enable_66MHz_clock(drive->hwif);
 415         if (drive->addressing == 1) {
 416                 struct request *rq      = HWGROUP(drive)->rq;
 417                 ide_hwif_t *hwif        = HWIF(drive);
 418 //              struct pci_dev *dev     = hwif->pci_dev;
 419 //              unsgned long high_16    = pci_resource_start(dev, 4);
 420                 unsigned long high_16   = hwif->dma_master;
 421                 unsigned long atapi_reg = high_16 + (hwif->channel ? 0x24 : 0x20);
 422                 u32 word_count  = 0;
 423                 u8 clock = hwif->INB(high_16 + 0x11);
 424
 425                 hwif->OUTB(clock|(hwif->channel ? 0x08 : 0x02), high_16+0x11);
 426                 word_count = (rq->nr_sectors << 8);
 427                 word_count = (rq_data_dir(rq) == READ) ?
 428                                         word_count | 0x05000000 :
 429                                         word_count | 0x06000000;
 430                 hwif->OUTL(word_count, atapi_reg);
 431         }
 432         ide_dma_start(drive);
 433 }
 434
 435 static int pdc202xx_old_ide_dma_end(ide_drive_t *drive)
 436 {
 437         if (drive->addressing == 1) {
 438                 ide_hwif_t *hwif        = HWIF(drive);
 439 //              unsigned long high_16   = pci_resource_start(hwif->pci_dev, 4);
 440                 unsigned long high_16   = hwif->dma_master;
 441                 unsigned long atapi_reg = high_16 + (hwif->channel ? 0x24 : 0x20);
 442                 u8 clock                = 0;
 443
 444                 hwif->OUTL(0, atapi_reg); /* zero out extra */
 445                 clock = hwif->INB(high_16 + 0x11);
 446                 hwif->OUTB(clock & ~(hwif->channel ? 0x08:0x02), high_16+0x11);
 447         }
 448         if (drive->current_speed > XFER_UDMA_2)
 449                 pdc_old_disable_66MHz_clock(drive->hwif);
 450         return __ide_dma_end(drive);
 451 }
 452
 453 static int pdc202xx_old_ide_dma_test_irq(ide_drive_t *drive)
 454 {
 455         ide_hwif_t *hwif        = HWIF(drive);
 456 //      struct pci_dev *dev     = hwif->pci_dev;
 457 //      unsigned long high_16   = pci_resource_start(dev, 4);
 458         unsigned long high_16   = hwif->dma_master;
 459         u8 dma_stat             = hwif->INB(hwif->dma_status);
 460         u8 sc1d                 = hwif->INB((high_16 + 0x001d));
 461
 462         if (hwif->channel) {
 463                 /* bit7: Error, bit6: Interrupting, bit5: FIFO Full, bit4: FIFO Empty */
 464                 if ((sc1d & 0x50) == 0x50)
 465                         goto somebody_else;
 466                 else if ((sc1d & 0x40) == 0x40)
 467                         return (dma_stat & 4) == 4;
 468         } else {
 469                 /* bit3: Error, bit2: Interrupting, bit1: FIFO Full, bit0: FIFO Empty */
 470                 if ((sc1d & 0x05) == 0x05)
 471                         goto somebody_else;
 472                 else if ((sc1d & 0x04) == 0x04)
 473                         return (dma_stat & 4) == 4;
 474         }
 475 somebody_else:
 476         return (dma_stat & 4) == 4;     /* return 1 if INTR asserted */
 477 }
 478
 479 static int pdc202xx_ide_dma_lostirq(ide_drive_t *drive)
 480 {
 481         if (HWIF(drive)->resetproc != NULL)
 482                 HWIF(drive)->resetproc(drive);
 483         return __ide_dma_lostirq(drive);
 484 }
 485
 486 static int pdc202xx_ide_dma_timeout(ide_drive_t *drive)
 487 {
 488         if (HWIF(drive)->resetproc != NULL)
 489                 HWIF(drive)->resetproc(drive);
 490         return __ide_dma_timeout(drive);
 491 }
 492
 493 static void pdc202xx_reset_host (ide_hwif_t *hwif)
 494 {
 495 #ifdef CONFIG_BLK_DEV_IDEDMA
 496 //      unsigned long high_16   = hwif->dma_base - (8*(hwif->channel));
 497         unsigned long high_16   = hwif->dma_master;
 498 #else /* !CONFIG_BLK_DEV_IDEDMA */
 499         unsigned long high_16   = pci_resource_start(hwif->pci_dev, 4);
 500 #endif /* CONFIG_BLK_DEV_IDEDMA */
 501         u8 udma_speed_flag      = hwif->INB(high_16|0x001f);
 502
 503         hwif->OUTB((udma_speed_flag | 0x10), (high_16|0x001f));
 504         mdelay(100);
 505         hwif->OUTB((udma_speed_flag & ~0x10), (high_16|0x001f));
 506         mdelay(2000);   /* 2 seconds ?! */
 507
 508         printk(KERN_WARNING "PDC202XX: %s channel reset.\n",
 509                 hwif->channel ? "Secondary" : "Primary");
 510 }
 511
 512 static void pdc202xx_reset (ide_drive_t *drive)
 513 {
 514         ide_hwif_t *hwif        = HWIF(drive);
 515         ide_hwif_t *mate        = hwif->mate;
 516
 517         pdc202xx_reset_host(hwif);
 518         pdc202xx_reset_host(mate);
 519 #if 0
 520         /*
 521          * FIXME: Have to kick all the drives again :-/
 522          * What a pain in the ACE!
 523          */
 524         if (hwif->present) {
 525                 u16 hunit = 0;
 526                 for (hunit = 0; hunit < MAX_DRIVES; ++hunit) {
 527                         ide_drive_t *hdrive = &hwif->drives[hunit];
 528                         if (hdrive->present) {
 529                                 if (hwif->ide_dma_check)
 530                                         hwif->ide_dma_check(hdrive);
 531                                 else
 532                                         hwif->tuneproc(hdrive, 5);
 533                         }
 534                 }
 535         }
 536         if (mate->present) {
 537                 u16 munit = 0;
 538                 for (munit = 0; munit < MAX_DRIVES; ++munit) {
 539                         ide_drive_t *mdrive = &mate->drives[munit];
 540                         if (mdrive->present) {
 541                                 if (mate->ide_dma_check)
 542                                         mate->ide_dma_check(mdrive);
 543                                 else
 544                                         mate->tuneproc(mdrive, 5);
 545                         }
 546                 }
 547         }
 548 #else
 549         hwif->tuneproc(drive, 5);
 550 #endif
 551 }
 552
 553 /*
 554  * Since SUN Cobalt is attempting to do this operation, I should disclose
 555  * this has been a long time ago Thu Jul 27 16:40:57 2000 was the patch date
 556  * HOTSWAP ATA Infrastructure.
 557  */
 558 static int pdc202xx_tristate (ide_drive_t * drive, int state)
 559 {
 560         ide_hwif_t *hwif        = HWIF(drive);
 561 //      unsigned long high_16   = hwif->dma_base - (8*(hwif->channel));
 562         unsigned long high_16   = hwif->dma_master;
 563         u8 sc1f                 = hwif->INB(high_16|0x001f);
 564
 565         if (!hwif)
 566                 return -EINVAL;
 567
 568 //      hwif->bus_state = state;
 569
 570         if (state) {
 571                 hwif->OUTB(sc1f | 0x08, (high_16|0x001f));
 572         } else {
 573                 hwif->OUTB(sc1f & ~0x08, (high_16|0x001f));
 574         }
 575         return 0;
 576 }
 577
 578 static unsigned int __devinit init_chipset_pdc202xx(struct pci_dev *dev, const char *name)
 579 {
 580         if (dev->resource[PCI_ROM_RESOURCE].start) {
 581                 pci_write_config_dword(dev, PCI_ROM_ADDRESS,
 582                         dev->resource[PCI_ROM_RESOURCE].start | PCI_ROM_ADDRESS_ENABLE);
 583                 printk(KERN_INFO "%s: ROM enabled at 0x%08lx\n",
 584                         name, dev->resource[PCI_ROM_RESOURCE].start);
 585         }
 586
 587         /*
 588          * software reset -  this is required because the bios
 589          * will set UDMA timing on if the hdd supports it. The
 590          * user may want to turn udma off. A bug in the pdc20262
 591          * is that it cannot handle a downgrade in timing from
 592          * UDMA to DMA. Disk accesses after issuing a set
 593          * feature command will result in errors. A software
 594          * reset leaves the timing registers intact,
 595          * but resets the drives.
 596          */
 597 #if 0
 598         if ((dev->device == PCI_DEVICE_ID_PROMISE_20267) ||
 599             (dev->device == PCI_DEVICE_ID_PROMISE_20265) ||
 600             (dev->device == PCI_DEVICE_ID_PROMISE_20263) ||
 601             (dev->device == PCI_DEVICE_ID_PROMISE_20262)) {
 602                 unsigned long high_16   = pci_resource_start(dev, 4);
 603                 byte udma_speed_flag    = inb(high_16 + 0x001f);
 604                 outb(udma_speed_flag | 0x10, high_16 + 0x001f);
 605                 mdelay(100);
 606                 outb(udma_speed_flag & ~0x10, high_16 + 0x001f);
 607                 mdelay(2000);   /* 2 seconds ?! */
 608         }
 609
 610 #endif
 611         return dev->irq;
 612 }
 613
 614 static void __devinit init_hwif_pdc202xx(ide_hwif_t *hwif)
 615 {
 616         struct pci_dev *dev = hwif->pci_dev;
 617
 618         /* PDC20265 has problems with large LBA48 requests */
 619         if ((dev->device == PCI_DEVICE_ID_PROMISE_20267) ||
 620             (dev->device == PCI_DEVICE_ID_PROMISE_20265))
 621                 hwif->rqsize = 256;
 622
 623         hwif->autodma = 0;
 624         hwif->tuneproc  = &config_chipset_for_pio;
 625         hwif->quirkproc = &pdc202xx_quirkproc;
 626
 627         if (hwif->pci_dev->device != PCI_DEVICE_ID_PROMISE_20246) {
 628                 hwif->busproc   = &pdc202xx_tristate;
 629                 hwif->resetproc = &pdc202xx_reset;
 630         }
 631
 632         hwif->speedproc = &pdc202xx_tune_chipset;
 633
 634         hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
 635
 636         hwif->ultra_mask = 0x3f;
 637         hwif->mwdma_mask = 0x07;
 638         hwif->swdma_mask = 0x07;
 639
 640         hwif->ide_dma_check = &pdc202xx_config_drive_xfer_rate;
 641         hwif->ide_dma_lostirq = &pdc202xx_ide_dma_lostirq;
 642         hwif->ide_dma_timeout = &pdc202xx_ide_dma_timeout;
 643
 644         if (hwif->pci_dev->device != PCI_DEVICE_ID_PROMISE_20246) {
 645                 if (!(hwif->udma_four))
 646                         hwif->udma_four = (pdc202xx_old_cable_detect(hwif)) ? 0 : 1;
 647                 hwif->dma_start = &pdc202xx_old_ide_dma_start;
 648                 hwif->ide_dma_end = &pdc202xx_old_ide_dma_end;
 649         }
 650         hwif->ide_dma_test_irq = &pdc202xx_old_ide_dma_test_irq;
 651
 652         if (!noautodma)
 653                 hwif->autodma = 1;
 654         hwif->drives[0].autodma = hwif->drives[1].autodma = hwif->autodma;
 655 #if PDC202_DEBUG_CABLE
 656         printk(KERN_DEBUG "%s: %s-pin cable\n",
 657                 hwif->name, hwif->udma_four ? "80" : "40");
 658 #endif /* PDC202_DEBUG_CABLE */
 659 }
 660
 661 static void __devinit init_dma_pdc202xx(ide_hwif_t *hwif, unsigned long dmabase)
 662 {
 663         u8 udma_speed_flag = 0, primary_mode = 0, secondary_mode = 0;
 664
 665         if (hwif->channel) {
 666                 ide_setup_dma(hwif, dmabase, 8);
 667                 return;
 668         }
 669
 670         udma_speed_flag = hwif->INB((dmabase|0x1f));
 671         primary_mode    = hwif->INB((dmabase|0x1a));
 672         secondary_mode  = hwif->INB((dmabase|0x1b));
 673         printk(KERN_INFO "%s: (U)DMA Burst Bit %sABLED " \
 674                 "Primary %s Mode " \
 675                 "Secondary %s Mode.\n", hwif->cds->name,
 676                 (udma_speed_flag & 1) ? "EN" : "DIS",
 677                 (primary_mode & 1) ? "MASTER" : "PCI",
 678                 (secondary_mode & 1) ? "MASTER" : "PCI" );
 679
 680 #ifdef CONFIG_PDC202XX_BURST
 681         if (!(udma_speed_flag & 1)) {
 682                 printk(KERN_INFO "%s: FORCING BURST BIT 0x%02x->0x%02x ",
 683                         hwif->cds->name, udma_speed_flag,
 684                         (udma_speed_flag|1));
 685                 hwif->OUTB(udma_speed_flag|1,(dmabase|0x1f));
 686                 printk("%sACTIVE\n",
 687                         (hwif->INB(dmabase|0x1f)&1) ? "":"IN");
 688         }
 689 #endif /* CONFIG_PDC202XX_BURST */
 690 #ifdef CONFIG_PDC202XX_MASTER
 691         if (!(primary_mode & 1)) {
 692                 printk(KERN_INFO "%s: FORCING PRIMARY MODE BIT "
 693                         "0x%02x -> 0x%02x ", hwif->cds->name,
 694                         primary_mode, (primary_mode|1));
 695                 hwif->OUTB(primary_mode|1, (dmabase|0x1a));
 696                 printk("%s\n",
 697                         (hwif->INB((dmabase|0x1a)) & 1) ? "MASTER" : "PCI");
 698         }
 699
 700         if (!(secondary_mode & 1)) {
 701                 printk(KERN_INFO "%s: FORCING SECONDARY MODE BIT "
 702                         "0x%02x -> 0x%02x ", hwif->cds->name,
 703                         secondary_mode, (secondary_mode|1));
 704                 hwif->OUTB(secondary_mode|1, (dmabase|0x1b));
 705                 printk("%s\n",
 706                         (hwif->INB((dmabase|0x1b)) & 1) ? "MASTER" : "PCI");
 707         }
 708 #endif /* CONFIG_PDC202XX_MASTER */
 709
 710         ide_setup_dma(hwif, dmabase, 8);
 711 }
 712
 713 static int __devinit init_setup_pdc202ata4(struct pci_dev *dev,
 714                                            ide_pci_device_t *d)
 715 {
 716         if ((dev->class >> 8) != PCI_CLASS_STORAGE_IDE) {
 717                 u8 irq = 0, irq2 = 0;
 718                 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
 719                 /* 0xbc */
 720                 pci_read_config_byte(dev, (PCI_INTERRUPT_LINE)|0x80, &irq2);
 721                 if (irq != irq2) {
 722                         pci_write_config_byte(dev,
 723                                 (PCI_INTERRUPT_LINE)|0x80, irq);     /* 0xbc */
 724                         printk(KERN_INFO "%s: pci-config space interrupt "
 725                                 "mirror fixed.\n", d->name);
 726                 }
 727         }
 728
 729 #if 0
 730         if (dev->device == PCI_DEVICE_ID_PROMISE_20262)
 731         if (e->reg && (pci_read_config_byte(dev, e->reg, &tmp) ||
 732              (tmp & e->mask) != e->val))
 733
 734         if (d->enablebits[0].reg != d->enablebits[1].reg) {
 735                 d->enablebits[0].reg    = d->enablebits[1].reg;
 736                 d->enablebits[0].mask   = d->enablebits[1].mask;
 737                 d->enablebits[0].val    = d->enablebits[1].val;
 738         }
 739 #endif
 740
 741         return ide_setup_pci_device(dev, d);
 742 }
 743
 744 static int __devinit init_setup_pdc20265(struct pci_dev *dev,
 745                                          ide_pci_device_t *d)
 746 {
 747         if ((dev->bus->self) &&
 748             (dev->bus->self->vendor == PCI_VENDOR_ID_INTEL) &&
 749             ((dev->bus->self->device == PCI_DEVICE_ID_INTEL_I960) ||
 750              (dev->bus->self->device == PCI_DEVICE_ID_INTEL_I960RM))) {
 751                 printk(KERN_INFO "ide: Skipping Promise PDC20265 "
 752                         "attached to I2O RAID controller.\n");
 753                 return -ENODEV;
 754         }
 755
 756 #if 0
 757         {
 758                 u8 pri = 0, sec = 0;
 759
 760         if (e->reg && (pci_read_config_byte(dev, e->reg, &tmp) ||
 761              (tmp & e->mask) != e->val))
 762
 763         if (d->enablebits[0].reg != d->enablebits[1].reg) {
 764                 d->enablebits[0].reg    = d->enablebits[1].reg;
 765                 d->enablebits[0].mask   = d->enablebits[1].mask;
 766                 d->enablebits[0].val    = d->enablebits[1].val;
 767         }
 768         }
 769 #endif
 770
 771         return ide_setup_pci_device(dev, d);
 772 }
 773
 774 static int __devinit init_setup_pdc202xx(struct pci_dev *dev,
 775                                          ide_pci_device_t *d)
 776 {
 777         return ide_setup_pci_device(dev, d);
 778 }
 779
 780 static ide_pci_device_t pdc202xx_chipsets[] __devinitdata = {
 781         {       /* 0 */
 782                 .name           = "PDC20246",
 783                 .init_setup     = init_setup_pdc202ata4,
 784                 .init_chipset   = init_chipset_pdc202xx,
 785                 .init_hwif      = init_hwif_pdc202xx,
 786                 .init_dma       = init_dma_pdc202xx,
 787                 .channels       = 2,
 788                 .autodma        = AUTODMA,
 789                 .bootable       = OFF_BOARD,
 790                 .extra          = 16,
 791         },{     /* 1 */
 792                 .name           = "PDC20262",
 793                 .init_setup     = init_setup_pdc202ata4,
 794                 .init_chipset   = init_chipset_pdc202xx,
 795                 .init_hwif      = init_hwif_pdc202xx,
 796                 .init_dma       = init_dma_pdc202xx,
 797                 .channels       = 2,
 798                 .autodma        = AUTODMA,
 799                 .bootable       = OFF_BOARD,
 800                 .extra          = 48,
 801         },{     /* 2 */
 802                 .name           = "PDC20263",
 803                 .init_setup     = init_setup_pdc202ata4,
 804                 .init_chipset   = init_chipset_pdc202xx,
 805                 .init_hwif      = init_hwif_pdc202xx,
 806                 .init_dma       = init_dma_pdc202xx,
 807                 .channels       = 2,
 808                 .autodma        = AUTODMA,
 809                 .bootable       = OFF_BOARD,
 810                 .extra          = 48,
 811         },{     /* 3 */
 812                 .name           = "PDC20265",
 813                 .init_setup     = init_setup_pdc20265,
 814                 .init_chipset   = init_chipset_pdc202xx,
 815                 .init_hwif      = init_hwif_pdc202xx,
 816                 .init_dma       = init_dma_pdc202xx,
 817                 .channels       = 2,
 818                 .autodma        = AUTODMA,
 819                 .bootable       = OFF_BOARD,
 820                 .extra          = 48,
 821         },{     /* 4 */
 822                 .name           = "PDC20267",
 823                 .init_setup     = init_setup_pdc202xx,
 824                 .init_chipset   = init_chipset_pdc202xx,
 825                 .init_hwif      = init_hwif_pdc202xx,
 826                 .init_dma       = init_dma_pdc202xx,
 827                 .channels       = 2,
 828                 .autodma        = AUTODMA,
 829                 .bootable       = OFF_BOARD,
 830                 .extra          = 48,
 831         }
 832 };
 833
 834 /**
 835  *      pdc202xx_init_one       -       called when a PDC202xx is found
 836  *      @dev: the pdc202xx device
 837  *      @id: the matching pci id
 838  *
 839  *      Called when the PCI registration layer (or the IDE initialization)
 840  *      finds a device matching our IDE device tables.
 841  */
 842
 843 static int __devinit pdc202xx_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 844 {
 845         ide_pci_device_t *d = &pdc202xx_chipsets[id->driver_data];
 846
 847         return d->init_setup(dev, d);
 848 }
 849
 850 static struct pci_device_id pdc202xx_pci_tbl[] = {
 851         { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20246, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
 852         { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20262, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
 853         { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20263, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2},
 854         { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20265, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3},
 855         { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20267, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4},
 856         { 0, },
 857 };
 858 MODULE_DEVICE_TABLE(pci, pdc202xx_pci_tbl);
 859
 860 static struct pci_driver driver = {
 861         .name           = "Promise_Old_IDE",
 862         .id_table       = pdc202xx_pci_tbl,
 863         .probe          = pdc202xx_init_one,
 864 };
 865
 866 static int pdc202xx_ide_init(void)
 867 {
 868         return ide_pci_register_driver(&driver);
 869 }
 870
 871 module_init(pdc202xx_ide_init);
 872
 873 MODULE_AUTHOR("Andre Hedrick, Frank Tiernan");
 874 MODULE_DESCRIPTION("PCI driver module for older Promise IDE");
 875 MODULE_LICENSE("GPL");