drivers/ide/pci/pdc202xx_old.c

   1 /*
   2  *  Copyright (C) 1998-2002             Andre Hedrick <andre@linux-ide.org>
   3  *  Copyright (C) 2006-2007             MontaVista Software, Inc.
   4  *  Copyright (C) 2007                  Bartlomiej Zolnierkiewicz
   5  *
   6  *  Portions Copyright (C) 1999 Promise Technology, Inc.
   7  *  Author: Frank Tiernan (frankt@promise.com)
   8  *  Released under terms of General Public License
   9  */
  10
  11 #include <linux/types.h>
  12 #include <linux/module.h>
  13 #include <linux/kernel.h>
  14 #include <linux/delay.h>
  15 #include <linux/blkdev.h>
  16 #include <linux/hdreg.h>
  17 #include <linux/pci.h>
  18 #include <linux/init.h>
  19 #include <linux/ide.h>
  20
  21 #include <asm/io.h>
  22
  23 #define PDC202XX_DEBUG_DRIVE_INFO       0
  24
  25 static const char *pdc_quirk_drives[] = {
  26         "QUANTUM FIREBALLlct08 08",
  27         "QUANTUM FIREBALLP KA6.4",
  28         "QUANTUM FIREBALLP KA9.1",
  29         "QUANTUM FIREBALLP LM20.4",
  30         "QUANTUM FIREBALLP KX13.6",
  31         "QUANTUM FIREBALLP KX20.5",
  32         "QUANTUM FIREBALLP KX27.3",
  33         "QUANTUM FIREBALLP LM20.5",
  34         NULL
  35 };
  36
  37 static void pdc_old_disable_66MHz_clock(ide_hwif_t *);
  38
  39 static void pdc202xx_set_mode(ide_drive_t *drive, const u8 speed)
  40 {
  41         ide_hwif_t *hwif        = HWIF(drive);
  42         struct pci_dev *dev     = to_pci_dev(hwif->dev);
  43         u8 drive_pci            = 0x60 + (drive->dn << 2);
  44
  45         u8                      AP = 0, BP = 0, CP = 0;
  46         u8                      TA = 0, TB = 0, TC = 0;
  47
  48 #if PDC202XX_DEBUG_DRIVE_INFO
  49         u32                     drive_conf = 0;
  50         pci_read_config_dword(dev, drive_pci, &drive_conf);
  51 #endif
  52
  53         /*
  54          * TODO: do this once per channel
  55          */
  56         if (dev->device != PCI_DEVICE_ID_PROMISE_20246)
  57                 pdc_old_disable_66MHz_clock(hwif);
  58
  59         pci_read_config_byte(dev, drive_pci,     &AP);
  60         pci_read_config_byte(dev, drive_pci + 1, &BP);
  61         pci_read_config_byte(dev, drive_pci + 2, &CP);
  62
  63         switch(speed) {
  64                 case XFER_UDMA_5:
  65                 case XFER_UDMA_4:       TB = 0x20; TC = 0x01; break;
  66                 case XFER_UDMA_2:       TB = 0x20; TC = 0x01; break;
  67                 case XFER_UDMA_3:
  68                 case XFER_UDMA_1:       TB = 0x40; TC = 0x02; break;
  69                 case XFER_UDMA_0:
  70                 case XFER_MW_DMA_2:     TB = 0x60; TC = 0x03; break;
  71                 case XFER_MW_DMA_1:     TB = 0x60; TC = 0x04; break;
  72                 case XFER_MW_DMA_0:     TB = 0xE0; TC = 0x0F; break;
  73                 case XFER_PIO_4:        TA = 0x01; TB = 0x04; break;
  74                 case XFER_PIO_3:        TA = 0x02; TB = 0x06; break;
  75                 case XFER_PIO_2:        TA = 0x03; TB = 0x08; break;
  76                 case XFER_PIO_1:        TA = 0x05; TB = 0x0C; break;
  77                 case XFER_PIO_0:
  78                 default:                TA = 0x09; TB = 0x13; break;
  79         }
  80
  81         if (speed < XFER_SW_DMA_0) {
  82                 /*
  83                  * preserve SYNC_INT / ERDDY_EN bits while clearing
  84                  * Prefetch_EN / IORDY_EN / PA[3:0] bits of register A
  85                  */
  86                 AP &= ~0x3f;
  87                 if (drive->id->capability & 4)
  88                         AP |= 0x20;     /* set IORDY_EN bit */
  89                 if (drive->media == ide_disk)
  90                         AP |= 0x10;     /* set Prefetch_EN bit */
  91                 /* clear PB[4:0] bits of register B */
  92                 BP &= ~0x1f;
  93                 pci_write_config_byte(dev, drive_pci,     AP | TA);
  94                 pci_write_config_byte(dev, drive_pci + 1, BP | TB);
  95         } else {
  96                 /* clear MB[2:0] bits of register B */
  97                 BP &= ~0xe0;
  98                 /* clear MC[3:0] bits of register C */
  99                 CP &= ~0x0f;
 100                 pci_write_config_byte(dev, drive_pci + 1, BP | TB);
 101                 pci_write_config_byte(dev, drive_pci + 2, CP | TC);
 102         }
 103
 104 #if PDC202XX_DEBUG_DRIVE_INFO
 105         printk(KERN_DEBUG "%s: %s drive%d 0x%08x ",
 106                 drive->name, ide_xfer_verbose(speed),
 107                 drive->dn, drive_conf);
 108         pci_read_config_dword(dev, drive_pci, &drive_conf);
 109         printk("0x%08x\n", drive_conf);
 110 #endif
 111 }
 112
 113 static void pdc202xx_set_pio_mode(ide_drive_t *drive, const u8 pio)
 114 {
 115         pdc202xx_set_mode(drive, XFER_PIO_0 + pio);
 116 }
 117
 118 static u8 __devinit pdc2026x_old_cable_detect(ide_hwif_t *hwif)
 119 {
 120         struct pci_dev *dev = to_pci_dev(hwif->dev);
 121         u16 CIS, mask = hwif->channel ? (1 << 11) : (1 << 10);
 122
 123         pci_read_config_word(dev, 0x50, &CIS);
 124
 125         return (CIS & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
 126 }
 127
 128 /*
 129  * Set the control register to use the 66MHz system
 130  * clock for UDMA 3/4/5 mode operation when necessary.
 131  *
 132  * FIXME: this register is shared by both channels, some locking is needed
 133  *
 134  * It may also be possible to leave the 66MHz clock on
 135  * and readjust the timing parameters.
 136  */
 137 static void pdc_old_enable_66MHz_clock(ide_hwif_t *hwif)
 138 {
 139         unsigned long clock_reg = hwif->extra_base + 0x01;
 140         u8 clock = inb(clock_reg);
 141
 142         outb(clock | (hwif->channel ? 0x08 : 0x02), clock_reg);
 143 }
 144
 145 static void pdc_old_disable_66MHz_clock(ide_hwif_t *hwif)
 146 {
 147         unsigned long clock_reg = hwif->extra_base + 0x01;
 148         u8 clock = inb(clock_reg);
 149
 150         outb(clock & ~(hwif->channel ? 0x08 : 0x02), clock_reg);
 151 }
 152
 153 static void pdc202xx_quirkproc(ide_drive_t *drive)
 154 {
 155         const char **list, *model = drive->id->model;
 156
 157         for (list = pdc_quirk_drives; *list != NULL; list++)
 158                 if (strstr(model, *list) != NULL) {
 159                         drive->quirk_list = 2;
 160                         return;
 161                 }
 162
 163         drive->quirk_list = 0;
 164 }
 165
 166 static void pdc202xx_old_ide_dma_start(ide_drive_t *drive)
 167 {
 168         if (drive->current_speed > XFER_UDMA_2)
 169                 pdc_old_enable_66MHz_clock(drive->hwif);
 170         if (drive->media != ide_disk || drive->addressing == 1) {
 171                 struct request *rq      = HWGROUP(drive)->rq;
 172                 ide_hwif_t *hwif        = HWIF(drive);
 173                 unsigned long high_16   = hwif->extra_base - 16;
 174                 unsigned long atapi_reg = high_16 + (hwif->channel ? 0x24 : 0x20);
 175                 u32 word_count  = 0;
 176                 u8 clock = inb(high_16 + 0x11);
 177
 178                 outb(clock | (hwif->channel ? 0x08 : 0x02), high_16 + 0x11);
 179                 word_count = (rq->nr_sectors << 8);
 180                 word_count = (rq_data_dir(rq) == READ) ?
 181                                         word_count | 0x05000000 :
 182                                         word_count | 0x06000000;
 183                 outl(word_count, atapi_reg);
 184         }
 185         ide_dma_start(drive);
 186 }
 187
 188 static int pdc202xx_old_ide_dma_end(ide_drive_t *drive)
 189 {
 190         if (drive->media != ide_disk || drive->addressing == 1) {
 191                 ide_hwif_t *hwif        = HWIF(drive);
 192                 unsigned long high_16   = hwif->extra_base - 16;
 193                 unsigned long atapi_reg = high_16 + (hwif->channel ? 0x24 : 0x20);
 194                 u8 clock                = 0;
 195
 196                 outl(0, atapi_reg); /* zero out extra */
 197                 clock = inb(high_16 + 0x11);
 198                 outb(clock & ~(hwif->channel ? 0x08:0x02), high_16 + 0x11);
 199         }
 200         if (drive->current_speed > XFER_UDMA_2)
 201                 pdc_old_disable_66MHz_clock(drive->hwif);
 202         return __ide_dma_end(drive);
 203 }
 204
 205 static int pdc202xx_old_ide_dma_test_irq(ide_drive_t *drive)
 206 {
 207         ide_hwif_t *hwif        = HWIF(drive);
 208         unsigned long high_16   = hwif->extra_base - 16;
 209         u8 dma_stat             = inb(hwif->dma_status);
 210         u8 sc1d                 = inb(high_16 + 0x001d);
 211
 212         if (hwif->channel) {
 213                 /* bit7: Error, bit6: Interrupting, bit5: FIFO Full, bit4: FIFO Empty */
 214                 if ((sc1d & 0x50) == 0x50)
 215                         goto somebody_else;
 216                 else if ((sc1d & 0x40) == 0x40)
 217                         return (dma_stat & 4) == 4;
 218         } else {
 219                 /* bit3: Error, bit2: Interrupting, bit1: FIFO Full, bit0: FIFO Empty */
 220                 if ((sc1d & 0x05) == 0x05)
 221                         goto somebody_else;
 222                 else if ((sc1d & 0x04) == 0x04)
 223                         return (dma_stat & 4) == 4;
 224         }
 225 somebody_else:
 226         return (dma_stat & 4) == 4;     /* return 1 if INTR asserted */
 227 }
 228
 229 static void pdc202xx_dma_lost_irq(ide_drive_t *drive)
 230 {
 231         ide_hwif_t *hwif = HWIF(drive);
 232
 233         if (hwif->resetproc != NULL)
 234                 hwif->resetproc(drive);
 235
 236         ide_dma_lost_irq(drive);
 237 }
 238
 239 static void pdc202xx_dma_timeout(ide_drive_t *drive)
 240 {
 241         ide_hwif_t *hwif = HWIF(drive);
 242
 243         if (hwif->resetproc != NULL)
 244                 hwif->resetproc(drive);
 245
 246         ide_dma_timeout(drive);
 247 }
 248
 249 static void pdc202xx_reset_host (ide_hwif_t *hwif)
 250 {
 251         unsigned long high_16   = hwif->extra_base - 16;
 252         u8 udma_speed_flag      = inb(high_16 | 0x001f);
 253
 254         outb(udma_speed_flag | 0x10, high_16 | 0x001f);
 255         mdelay(100);
 256         outb(udma_speed_flag & ~0x10, high_16 | 0x001f);
 257         mdelay(2000);   /* 2 seconds ?! */
 258
 259         printk(KERN_WARNING "PDC202XX: %s channel reset.\n",
 260                 hwif->channel ? "Secondary" : "Primary");
 261 }
 262
 263 static void pdc202xx_reset (ide_drive_t *drive)
 264 {
 265         ide_hwif_t *hwif        = HWIF(drive);
 266         ide_hwif_t *mate        = hwif->mate;
 267
 268         pdc202xx_reset_host(hwif);
 269         pdc202xx_reset_host(mate);
 270
 271         ide_set_max_pio(drive);
 272 }
 273
 274 static unsigned int __devinit init_chipset_pdc202xx(struct pci_dev *dev,
 275                                                         const char *name)
 276 {
 277         return dev->irq;
 278 }
 279
 280 static void __devinit init_hwif_pdc202xx(ide_hwif_t *hwif)
 281 {
 282         struct pci_dev *dev = to_pci_dev(hwif->dev);
 283
 284         hwif->set_pio_mode = &pdc202xx_set_pio_mode;
 285         hwif->set_dma_mode = &pdc202xx_set_mode;
 286
 287         hwif->quirkproc = &pdc202xx_quirkproc;
 288
 289         if (dev->device != PCI_DEVICE_ID_PROMISE_20246) {
 290                 hwif->resetproc = &pdc202xx_reset;
 291
 292                 hwif->cable_detect = pdc2026x_old_cable_detect;
 293         }
 294
 295         if (hwif->dma_base == 0)
 296                 return;
 297
 298         hwif->dma_lost_irq = &pdc202xx_dma_lost_irq;
 299         hwif->dma_timeout = &pdc202xx_dma_timeout;
 300
 301         if (dev->device != PCI_DEVICE_ID_PROMISE_20246) {
 302                 hwif->dma_start = &pdc202xx_old_ide_dma_start;
 303                 hwif->ide_dma_end = &pdc202xx_old_ide_dma_end;
 304         }
 305         hwif->ide_dma_test_irq = &pdc202xx_old_ide_dma_test_irq;
 306 }
 307
 308 static void __devinit init_dma_pdc202xx(ide_hwif_t *hwif, unsigned long dmabase)
 309 {
 310         u8 udma_speed_flag = 0, primary_mode = 0, secondary_mode = 0;
 311
 312         if (hwif->channel) {
 313                 ide_setup_dma(hwif, dmabase);
 314                 return;
 315         }
 316
 317         udma_speed_flag = inb(dmabase | 0x1f);
 318         primary_mode    = inb(dmabase | 0x1a);
 319         secondary_mode  = inb(dmabase | 0x1b);
 320         printk(KERN_INFO "%s: (U)DMA Burst Bit %sABLED " \
 321                 "Primary %s Mode " \
 322                 "Secondary %s Mode.\n", hwif->cds->name,
 323                 (udma_speed_flag & 1) ? "EN" : "DIS",
 324                 (primary_mode & 1) ? "MASTER" : "PCI",
 325                 (secondary_mode & 1) ? "MASTER" : "PCI" );
 326
 327         if (!(udma_speed_flag & 1)) {
 328                 printk(KERN_INFO "%s: FORCING BURST BIT 0x%02x->0x%02x ",
 329                         hwif->cds->name, udma_speed_flag,
 330                         (udma_speed_flag|1));
 331                 outb(udma_speed_flag | 1, dmabase | 0x1f);
 332                 printk("%sACTIVE\n", (inb(dmabase | 0x1f) & 1) ? "" : "IN");
 333         }
 334
 335         ide_setup_dma(hwif, dmabase);
 336 }
 337
 338 static void __devinit pdc202ata4_fixup_irq(struct pci_dev *dev,
 339                                            const char *name)
 340 {
 341         if ((dev->class >> 8) != PCI_CLASS_STORAGE_IDE) {
 342                 u8 irq = 0, irq2 = 0;
 343                 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
 344                 /* 0xbc */
 345                 pci_read_config_byte(dev, (PCI_INTERRUPT_LINE)|0x80, &irq2);
 346                 if (irq != irq2) {
 347                         pci_write_config_byte(dev,
 348                                 (PCI_INTERRUPT_LINE)|0x80, irq);     /* 0xbc */
 349                         printk(KERN_INFO "%s: PCI config space interrupt "
 350                                          "mirror fixed\n", name);
 351                 }
 352         }
 353 }
 354
 355 #define IDE_HFLAGS_PDC202XX \
 356         (IDE_HFLAG_ERROR_STOPS_FIFO | \
 357          IDE_HFLAG_ABUSE_SET_DMA_MODE | \
 358          IDE_HFLAG_OFF_BOARD)
 359
 360 #define DECLARE_PDC2026X_DEV(name_str, udma, extra_flags) \
 361         { \
 362                 .name           = name_str, \
 363                 .init_chipset   = init_chipset_pdc202xx, \
 364                 .init_hwif      = init_hwif_pdc202xx, \
 365                 .init_dma       = init_dma_pdc202xx, \
 366                 .extra          = 48, \
 367                 .host_flags     = IDE_HFLAGS_PDC202XX | extra_flags, \
 368                 .pio_mask       = ATA_PIO4, \
 369                 .mwdma_mask     = ATA_MWDMA2, \
 370                 .udma_mask      = udma, \
 371         }
 372
 373 static const struct ide_port_info pdc202xx_chipsets[] __devinitdata = {
 374         {       /* 0 */
 375                 .name           = "PDC20246",
 376                 .init_chipset   = init_chipset_pdc202xx,
 377                 .init_hwif      = init_hwif_pdc202xx,
 378                 .init_dma       = init_dma_pdc202xx,
 379                 .extra          = 16,
 380                 .host_flags     = IDE_HFLAGS_PDC202XX,
 381                 .pio_mask       = ATA_PIO4,
 382                 .mwdma_mask     = ATA_MWDMA2,
 383                 .udma_mask      = ATA_UDMA2,
 384         },
 385
 386         /* 1 */ DECLARE_PDC2026X_DEV("PDC20262", ATA_UDMA4, 0),
 387         /* 2 */ DECLARE_PDC2026X_DEV("PDC20263", ATA_UDMA4, 0),
 388         /* 3 */ DECLARE_PDC2026X_DEV("PDC20265", ATA_UDMA5, IDE_HFLAG_RQSIZE_256),
 389         /* 4 */ DECLARE_PDC2026X_DEV("PDC20267", ATA_UDMA5, IDE_HFLAG_RQSIZE_256),
 390 };
 391
 392 /**
 393  *      pdc202xx_init_one       -       called when a PDC202xx is found
 394  *      @dev: the pdc202xx device
 395  *      @id: the matching pci id
 396  *
 397  *      Called when the PCI registration layer (or the IDE initialization)
 398  *      finds a device matching our IDE device tables.
 399  */
 400
 401 static int __devinit pdc202xx_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 402 {
 403         const struct ide_port_info *d;
 404         u8 idx = id->driver_data;
 405
 406         d = &pdc202xx_chipsets[idx];
 407
 408         if (idx < 3)
 409                 pdc202ata4_fixup_irq(dev, d->name);
 410
 411         if (idx == 3) {
 412                 struct pci_dev *bridge = dev->bus->self;
 413
 414                 if (bridge &&
 415                     bridge->vendor == PCI_VENDOR_ID_INTEL &&
 416                     (bridge->device == PCI_DEVICE_ID_INTEL_I960 ||
 417                      bridge->device == PCI_DEVICE_ID_INTEL_I960RM)) {
 418                         printk(KERN_INFO "ide: Skipping Promise PDC20265 "
 419                                 "attached to I2O RAID controller\n");
 420                         return -ENODEV;
 421                 }
 422         }
 423
 424         return ide_setup_pci_device(dev, d);
 425 }
 426
 427 static const struct pci_device_id pdc202xx_pci_tbl[] = {
 428         { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20246), 0 },
 429         { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20262), 1 },
 430         { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20263), 2 },
 431         { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20265), 3 },
 432         { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20267), 4 },
 433         { 0, },
 434 };
 435 MODULE_DEVICE_TABLE(pci, pdc202xx_pci_tbl);
 436
 437 static struct pci_driver driver = {
 438         .name           = "Promise_Old_IDE",
 439         .id_table       = pdc202xx_pci_tbl,
 440         .probe          = pdc202xx_init_one,
 441 };
 442
 443 static int __init pdc202xx_ide_init(void)
 444 {
 445         return ide_pci_register_driver(&driver);
 446 }
 447
 448 module_init(pdc202xx_ide_init);
 449
 450 MODULE_AUTHOR("Andre Hedrick, Frank Tiernan");
 451 MODULE_DESCRIPTION("PCI driver module for older Promise IDE");
 452 MODULE_LICENSE("GPL");