drivers/ide/pci/pdc202xx_old.c

   1 /*
   2  *  linux/drivers/ide/pci/pdc202xx_old.c        Version 0.52    Aug 27, 2007
   3  *
   4  *  Copyright (C) 1998-2002             Andre Hedrick <andre@linux-ide.org>
   5  *  Copyright (C) 2006-2007             MontaVista Software, Inc.
   6  *  Copyright (C) 2007                  Bartlomiej Zolnierkiewicz
   7  *
   8  *  Promise Ultra33 cards with BIOS v1.20 through 1.28 will need this
   9  *  compiled into the kernel if you have more than one card installed.
  10  *  Note that BIOS v1.29 is reported to fix the problem.  Since this is
  11  *  safe chipset tuning, including this support is harmless
  12  *
  13  *  Promise Ultra66 cards with BIOS v1.11 this
  14  *  compiled into the kernel if you have more than one card installed.
  15  *
  16  *  Promise Ultra100 cards.
  17  *
  18  *  The latest chipset code will support the following ::
  19  *  Three Ultra33 controllers and 12 drives.
  20  *  8 are UDMA supported and 4 are limited to DMA mode 2 multi-word.
  21  *  The 8/4 ratio is a BIOS code limit by promise.
  22  *
  23  *  UNLESS you enable "CONFIG_PDC202XX_BURST"
  24  *
  25  */
  26
  27 /*
  28  *  Portions Copyright (C) 1999 Promise Technology, Inc.
  29  *  Author: Frank Tiernan (frankt@promise.com)
  30  *  Released under terms of General Public License
  31  */
  32
  33 #include <linux/types.h>
  34 #include <linux/module.h>
  35 #include <linux/kernel.h>
  36 #include <linux/delay.h>
  37 #include <linux/timer.h>
  38 #include <linux/mm.h>
  39 #include <linux/ioport.h>
  40 #include <linux/blkdev.h>
  41 #include <linux/hdreg.h>
  42 #include <linux/interrupt.h>
  43 #include <linux/pci.h>
  44 #include <linux/init.h>
  45 #include <linux/ide.h>
  46
  47 #include <asm/io.h>
  48 #include <asm/irq.h>
  49
  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 static void pdc_old_disable_66MHz_clock(ide_hwif_t *);
  65
  66 static void pdc202xx_set_mode(ide_drive_t *drive, const u8 speed)
  67 {
  68         ide_hwif_t *hwif        = HWIF(drive);
  69         struct pci_dev *dev     = hwif->pci_dev;
  70         u8 drive_pci            = 0x60 + (drive->dn << 2);
  71
  72         u8                      AP = 0, BP = 0, CP = 0;
  73         u8                      TA = 0, TB = 0, TC = 0;
  74
  75 #if PDC202XX_DEBUG_DRIVE_INFO
  76         u32                     drive_conf = 0;
  77         pci_read_config_dword(dev, drive_pci, &drive_conf);
  78 #endif
  79
  80         /*
  81          * TODO: do this once per channel
  82          */
  83         if (dev->device != PCI_DEVICE_ID_PROMISE_20246)
  84                 pdc_old_disable_66MHz_clock(hwif);
  85
  86         pci_read_config_byte(dev, drive_pci,     &AP);
  87         pci_read_config_byte(dev, drive_pci + 1, &BP);
  88         pci_read_config_byte(dev, drive_pci + 2, &CP);
  89
  90         switch(speed) {
  91                 case XFER_UDMA_5:
  92                 case XFER_UDMA_4:       TB = 0x20; TC = 0x01; break;
  93                 case XFER_UDMA_2:       TB = 0x20; TC = 0x01; break;
  94                 case XFER_UDMA_3:
  95                 case XFER_UDMA_1:       TB = 0x40; TC = 0x02; break;
  96                 case XFER_UDMA_0:
  97                 case XFER_MW_DMA_2:     TB = 0x60; TC = 0x03; break;
  98                 case XFER_MW_DMA_1:     TB = 0x60; TC = 0x04; break;
  99                 case XFER_MW_DMA_0:     TB = 0xE0; TC = 0x0F; break;
 100                 case XFER_PIO_4:        TA = 0x01; TB = 0x04; break;
 101                 case XFER_PIO_3:        TA = 0x02; TB = 0x06; break;
 102                 case XFER_PIO_2:        TA = 0x03; TB = 0x08; break;
 103                 case XFER_PIO_1:        TA = 0x05; TB = 0x0C; break;
 104                 case XFER_PIO_0:
 105                 default:                TA = 0x09; TB = 0x13; break;
 106         }
 107
 108         if (speed < XFER_SW_DMA_0) {
 109                 /*
 110                  * preserve SYNC_INT / ERDDY_EN bits while clearing
 111                  * Prefetch_EN / IORDY_EN / PA[3:0] bits of register A
 112                  */
 113                 AP &= ~0x3f;
 114                 if (drive->id->capability & 4)
 115                         AP |= 0x20;     /* set IORDY_EN bit */
 116                 if (drive->media == ide_disk)
 117                         AP |= 0x10;     /* set Prefetch_EN bit */
 118                 /* clear PB[4:0] bits of register B */
 119                 BP &= ~0x1f;
 120                 pci_write_config_byte(dev, drive_pci,     AP | TA);
 121                 pci_write_config_byte(dev, drive_pci + 1, BP | TB);
 122         } else {
 123                 /* clear MB[2:0] bits of register B */
 124                 BP &= ~0xe0;
 125                 /* clear MC[3:0] bits of register C */
 126                 CP &= ~0x0f;
 127                 pci_write_config_byte(dev, drive_pci + 1, BP | TB);
 128                 pci_write_config_byte(dev, drive_pci + 2, CP | TC);
 129         }
 130
 131 #if PDC202XX_DEBUG_DRIVE_INFO
 132         printk(KERN_DEBUG "%s: %s drive%d 0x%08x ",
 133                 drive->name, ide_xfer_verbose(speed),
 134                 drive->dn, drive_conf);
 135         pci_read_config_dword(dev, drive_pci, &drive_conf);
 136         printk("0x%08x\n", drive_conf);
 137 #endif
 138 }
 139
 140 static void pdc202xx_set_pio_mode(ide_drive_t *drive, const u8 pio)
 141 {
 142         pdc202xx_set_mode(drive, XFER_PIO_0 + pio);
 143 }
 144
 145 static u8 pdc202xx_old_cable_detect (ide_hwif_t *hwif)
 146 {
 147         u16 CIS = 0, mask = (hwif->channel) ? (1<<11) : (1<<10);
 148
 149         pci_read_config_word(hwif->pci_dev, 0x50, &CIS);
 150
 151         return (CIS & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
 152 }
 153
 154 /*
 155  * Set the control register to use the 66MHz system
 156  * clock for UDMA 3/4/5 mode operation when necessary.
 157  *
 158  * FIXME: this register is shared by both channels, some locking is needed
 159  *
 160  * It may also be possible to leave the 66MHz clock on
 161  * and readjust the timing parameters.
 162  */
 163 static void pdc_old_enable_66MHz_clock(ide_hwif_t *hwif)
 164 {
 165         unsigned long clock_reg = hwif->extra_base + 0x01;
 166         u8 clock = inb(clock_reg);
 167
 168         outb(clock | (hwif->channel ? 0x08 : 0x02), clock_reg);
 169 }
 170
 171 static void pdc_old_disable_66MHz_clock(ide_hwif_t *hwif)
 172 {
 173         unsigned long clock_reg = hwif->extra_base + 0x01;
 174         u8 clock = inb(clock_reg);
 175
 176         outb(clock & ~(hwif->channel ? 0x08 : 0x02), clock_reg);
 177 }
 178
 179 static int pdc202xx_quirkproc (ide_drive_t *drive)
 180 {
 181         const char **list, *model = drive->id->model;
 182
 183         for (list = pdc_quirk_drives; *list != NULL; list++)
 184                 if (strstr(model, *list) != NULL)
 185                         return 2;
 186         return 0;
 187 }
 188
 189 static void pdc202xx_old_ide_dma_start(ide_drive_t *drive)
 190 {
 191         if (drive->current_speed > XFER_UDMA_2)
 192                 pdc_old_enable_66MHz_clock(drive->hwif);
 193         if (drive->media != ide_disk || drive->addressing == 1) {
 194                 struct request *rq      = HWGROUP(drive)->rq;
 195                 ide_hwif_t *hwif        = HWIF(drive);
 196                 unsigned long high_16   = hwif->extra_base - 16;
 197                 unsigned long atapi_reg = high_16 + (hwif->channel ? 0x24 : 0x20);
 198                 u32 word_count  = 0;
 199                 u8 clock = inb(high_16 + 0x11);
 200
 201                 outb(clock | (hwif->channel ? 0x08 : 0x02), high_16 + 0x11);
 202                 word_count = (rq->nr_sectors << 8);
 203                 word_count = (rq_data_dir(rq) == READ) ?
 204                                         word_count | 0x05000000 :
 205                                         word_count | 0x06000000;
 206                 outl(word_count, atapi_reg);
 207         }
 208         ide_dma_start(drive);
 209 }
 210
 211 static int pdc202xx_old_ide_dma_end(ide_drive_t *drive)
 212 {
 213         if (drive->media != ide_disk || drive->addressing == 1) {
 214                 ide_hwif_t *hwif        = HWIF(drive);
 215                 unsigned long high_16   = hwif->extra_base - 16;
 216                 unsigned long atapi_reg = high_16 + (hwif->channel ? 0x24 : 0x20);
 217                 u8 clock                = 0;
 218
 219                 outl(0, atapi_reg); /* zero out extra */
 220                 clock = inb(high_16 + 0x11);
 221                 outb(clock & ~(hwif->channel ? 0x08:0x02), high_16 + 0x11);
 222         }
 223         if (drive->current_speed > XFER_UDMA_2)
 224                 pdc_old_disable_66MHz_clock(drive->hwif);
 225         return __ide_dma_end(drive);
 226 }
 227
 228 static int pdc202xx_old_ide_dma_test_irq(ide_drive_t *drive)
 229 {
 230         ide_hwif_t *hwif        = HWIF(drive);
 231         unsigned long high_16   = hwif->extra_base - 16;
 232         u8 dma_stat             = inb(hwif->dma_status);
 233         u8 sc1d                 = inb(high_16 + 0x001d);
 234
 235         if (hwif->channel) {
 236                 /* bit7: Error, bit6: Interrupting, bit5: FIFO Full, bit4: FIFO Empty */
 237                 if ((sc1d & 0x50) == 0x50)
 238                         goto somebody_else;
 239                 else if ((sc1d & 0x40) == 0x40)
 240                         return (dma_stat & 4) == 4;
 241         } else {
 242                 /* bit3: Error, bit2: Interrupting, bit1: FIFO Full, bit0: FIFO Empty */
 243                 if ((sc1d & 0x05) == 0x05)
 244                         goto somebody_else;
 245                 else if ((sc1d & 0x04) == 0x04)
 246                         return (dma_stat & 4) == 4;
 247         }
 248 somebody_else:
 249         return (dma_stat & 4) == 4;     /* return 1 if INTR asserted */
 250 }
 251
 252 static void pdc202xx_dma_lost_irq(ide_drive_t *drive)
 253 {
 254         ide_hwif_t *hwif = HWIF(drive);
 255
 256         if (hwif->resetproc != NULL)
 257                 hwif->resetproc(drive);
 258
 259         ide_dma_lost_irq(drive);
 260 }
 261
 262 static void pdc202xx_dma_timeout(ide_drive_t *drive)
 263 {
 264         ide_hwif_t *hwif = HWIF(drive);
 265
 266         if (hwif->resetproc != NULL)
 267                 hwif->resetproc(drive);
 268
 269         ide_dma_timeout(drive);
 270 }
 271
 272 static void pdc202xx_reset_host (ide_hwif_t *hwif)
 273 {
 274         unsigned long high_16   = hwif->extra_base - 16;
 275         u8 udma_speed_flag      = inb(high_16 | 0x001f);
 276
 277         outb(udma_speed_flag | 0x10, high_16 | 0x001f);
 278         mdelay(100);
 279         outb(udma_speed_flag & ~0x10, high_16 | 0x001f);
 280         mdelay(2000);   /* 2 seconds ?! */
 281
 282         printk(KERN_WARNING "PDC202XX: %s channel reset.\n",
 283                 hwif->channel ? "Secondary" : "Primary");
 284 }
 285
 286 static void pdc202xx_reset (ide_drive_t *drive)
 287 {
 288         ide_hwif_t *hwif        = HWIF(drive);
 289         ide_hwif_t *mate        = hwif->mate;
 290
 291         pdc202xx_reset_host(hwif);
 292         pdc202xx_reset_host(mate);
 293
 294         ide_set_max_pio(drive);
 295 }
 296
 297 static unsigned int __devinit init_chipset_pdc202xx(struct pci_dev *dev,
 298                                                         const char *name)
 299 {
 300         return dev->irq;
 301 }
 302
 303 static void __devinit init_hwif_pdc202xx(ide_hwif_t *hwif)
 304 {
 305         hwif->set_pio_mode = &pdc202xx_set_pio_mode;
 306         hwif->set_dma_mode = &pdc202xx_set_mode;
 307
 308         hwif->quirkproc = &pdc202xx_quirkproc;
 309
 310         if (hwif->pci_dev->device != PCI_DEVICE_ID_PROMISE_20246)
 311                 hwif->resetproc = &pdc202xx_reset;
 312
 313         if (hwif->dma_base == 0)
 314                 return;
 315
 316         hwif->dma_lost_irq = &pdc202xx_dma_lost_irq;
 317         hwif->dma_timeout = &pdc202xx_dma_timeout;
 318
 319         if (hwif->pci_dev->device != PCI_DEVICE_ID_PROMISE_20246) {
 320                 if (hwif->cbl != ATA_CBL_PATA40_SHORT)
 321                         hwif->cbl = pdc202xx_old_cable_detect(hwif);
 322
 323                 hwif->dma_start = &pdc202xx_old_ide_dma_start;
 324                 hwif->ide_dma_end = &pdc202xx_old_ide_dma_end;
 325         }
 326         hwif->ide_dma_test_irq = &pdc202xx_old_ide_dma_test_irq;
 327 }
 328
 329 static void __devinit init_dma_pdc202xx(ide_hwif_t *hwif, unsigned long dmabase)
 330 {
 331         u8 udma_speed_flag = 0, primary_mode = 0, secondary_mode = 0;
 332
 333         if (hwif->channel) {
 334                 ide_setup_dma(hwif, dmabase, 8);
 335                 return;
 336         }
 337
 338         udma_speed_flag = inb(dmabase | 0x1f);
 339         primary_mode    = inb(dmabase | 0x1a);
 340         secondary_mode  = inb(dmabase | 0x1b);
 341         printk(KERN_INFO "%s: (U)DMA Burst Bit %sABLED " \
 342                 "Primary %s Mode " \
 343                 "Secondary %s Mode.\n", hwif->cds->name,
 344                 (udma_speed_flag & 1) ? "EN" : "DIS",
 345                 (primary_mode & 1) ? "MASTER" : "PCI",
 346                 (secondary_mode & 1) ? "MASTER" : "PCI" );
 347
 348 #ifdef CONFIG_PDC202XX_BURST
 349         if (!(udma_speed_flag & 1)) {
 350                 printk(KERN_INFO "%s: FORCING BURST BIT 0x%02x->0x%02x ",
 351                         hwif->cds->name, udma_speed_flag,
 352                         (udma_speed_flag|1));
 353                 outb(udma_speed_flag | 1, dmabase | 0x1f);
 354                 printk("%sACTIVE\n", (inb(dmabase | 0x1f) & 1) ? "" : "IN");
 355         }
 356 #endif /* CONFIG_PDC202XX_BURST */
 357
 358         ide_setup_dma(hwif, dmabase, 8);
 359 }
 360
 361 static void __devinit pdc202ata4_fixup_irq(struct pci_dev *dev,
 362                                            const char *name)
 363 {
 364         if ((dev->class >> 8) != PCI_CLASS_STORAGE_IDE) {
 365                 u8 irq = 0, irq2 = 0;
 366                 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
 367                 /* 0xbc */
 368                 pci_read_config_byte(dev, (PCI_INTERRUPT_LINE)|0x80, &irq2);
 369                 if (irq != irq2) {
 370                         pci_write_config_byte(dev,
 371                                 (PCI_INTERRUPT_LINE)|0x80, irq);     /* 0xbc */
 372                         printk(KERN_INFO "%s: PCI config space interrupt "
 373                                          "mirror fixed\n", name);
 374                 }
 375         }
 376 }
 377
 378 #define DECLARE_PDC2026X_DEV(name_str, udma, extra_flags) \
 379         { \
 380                 .name           = name_str, \
 381                 .init_chipset   = init_chipset_pdc202xx, \
 382                 .init_hwif      = init_hwif_pdc202xx, \
 383                 .init_dma       = init_dma_pdc202xx, \
 384                 .extra          = 48, \
 385                 .host_flags     = IDE_HFLAG_ERROR_STOPS_FIFO | \
 386                                   extra_flags | \
 387                                   IDE_HFLAG_OFF_BOARD, \
 388                 .pio_mask       = ATA_PIO4, \
 389                 .mwdma_mask     = ATA_MWDMA2, \
 390                 .udma_mask      = udma, \
 391         }
 392
 393 static const struct ide_port_info pdc202xx_chipsets[] __devinitdata = {
 394         {       /* 0 */
 395                 .name           = "PDC20246",
 396                 .init_chipset   = init_chipset_pdc202xx,
 397                 .init_hwif      = init_hwif_pdc202xx,
 398                 .init_dma       = init_dma_pdc202xx,
 399                 .extra          = 16,
 400                 .host_flags     = IDE_HFLAG_ERROR_STOPS_FIFO |
 401                                   IDE_HFLAG_OFF_BOARD,
 402                 .pio_mask       = ATA_PIO4,
 403                 .mwdma_mask     = ATA_MWDMA2,
 404                 .udma_mask      = ATA_UDMA2,
 405         },
 406
 407         /* 1 */ DECLARE_PDC2026X_DEV("PDC20262", ATA_UDMA4, 0),
 408         /* 2 */ DECLARE_PDC2026X_DEV("PDC20263", ATA_UDMA4, 0),
 409         /* 3 */ DECLARE_PDC2026X_DEV("PDC20265", ATA_UDMA5, IDE_HFLAG_RQSIZE_256),
 410         /* 4 */ DECLARE_PDC2026X_DEV("PDC20267", ATA_UDMA5, IDE_HFLAG_RQSIZE_256),
 411 };
 412
 413 /**
 414  *      pdc202xx_init_one       -       called when a PDC202xx is found
 415  *      @dev: the pdc202xx device
 416  *      @id: the matching pci id
 417  *
 418  *      Called when the PCI registration layer (or the IDE initialization)
 419  *      finds a device matching our IDE device tables.
 420  */
 421
 422 static int __devinit pdc202xx_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 423 {
 424         const struct ide_port_info *d;
 425         u8 idx = id->driver_data;
 426
 427         d = &pdc202xx_chipsets[idx];
 428
 429         if (idx < 3)
 430                 pdc202ata4_fixup_irq(dev, d->name);
 431
 432         if (idx == 3) {
 433                 struct pci_dev *bridge = dev->bus->self;
 434
 435                 if (bridge &&
 436                     bridge->vendor == PCI_VENDOR_ID_INTEL &&
 437                     (bridge->device == PCI_DEVICE_ID_INTEL_I960 ||
 438                      bridge->device == PCI_DEVICE_ID_INTEL_I960RM)) {
 439                         printk(KERN_INFO "ide: Skipping Promise PDC20265 "
 440                                 "attached to I2O RAID controller\n");
 441                         return -ENODEV;
 442                 }
 443         }
 444
 445         return ide_setup_pci_device(dev, d);
 446 }
 447
 448 static const struct pci_device_id pdc202xx_pci_tbl[] = {
 449         { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20246), 0 },
 450         { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20262), 1 },
 451         { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20263), 2 },
 452         { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20265), 3 },
 453         { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20267), 4 },
 454         { 0, },
 455 };
 456 MODULE_DEVICE_TABLE(pci, pdc202xx_pci_tbl);
 457
 458 static struct pci_driver driver = {
 459         .name           = "Promise_Old_IDE",
 460         .id_table       = pdc202xx_pci_tbl,
 461         .probe          = pdc202xx_init_one,
 462 };
 463
 464 static int __init pdc202xx_ide_init(void)
 465 {
 466         return ide_pci_register_driver(&driver);
 467 }
 468
 469 module_init(pdc202xx_ide_init);
 470
 471 MODULE_AUTHOR("Andre Hedrick, Frank Tiernan");
 472 MODULE_DESCRIPTION("PCI driver module for older Promise IDE");
 473 MODULE_LICENSE("GPL");