drivers/ide/pci/sis5513.c

   1 /*
   2  * linux/drivers/ide/pci/sis5513.c      Version 0.16ac+vp       Jun 18, 2003
   3  *
   4  * Copyright (C) 1999-2000      Andre Hedrick <andre@linux-ide.org>
   5  * Copyright (C) 2002           Lionel Bouton <Lionel.Bouton@inet6.fr>, Maintainer
   6  * Copyright (C) 2003           Vojtech Pavlik <vojtech@suse.cz>
   7  * May be copied or modified under the terms of the GNU General Public License
   8  *
   9  *
  10  * Thanks :
  11  *
  12  * SiS Taiwan           : for direct support and hardware.
  13  * Daniela Engert       : for initial ATA100 advices and numerous others.
  14  * John Fremlin, Manfred Spraul, Dave Morgan, Peter Kjellerstedt        :
  15  *                        for checking code correctness, providing patches.
  16  *
  17  *
  18  * Original tests and design on the SiS620 chipset.
  19  * ATA100 tests and design on the SiS735 chipset.
  20  * ATA16/33 support from specs
  21  * ATA133 support for SiS961/962 by L.C. Chang <lcchang@sis.com.tw>
  22  * ATA133 961/962/963 fixes by Vojtech Pavlik <vojtech@suse.cz>
  23  *
  24  * Documentation:
  25  *      SiS chipset documentation available under NDA to companies only
  26  *      (not to individuals).
  27  */
  28
  29 /*
  30  * The original SiS5513 comes from a SiS5511/55112/5513 chipset. The original
  31  * SiS5513 was also used in the SiS5596/5513 chipset. Thus if we see a SiS5511
  32  * or SiS5596, we can assume we see the first MWDMA-16 capable SiS5513 chip.
  33  *
  34  * Later SiS chipsets integrated the 5513 functionality into the NorthBridge,
  35  * starting with SiS5571 and up to SiS745. The PCI ID didn't change, though. We
  36  * can figure out that we have a more modern and more capable 5513 by looking
  37  * for the respective NorthBridge IDs.
  38  *
  39  * Even later (96x family) SiS chipsets use the MuTIOL link and place the 5513
  40  * into the SouthBrige. Here we cannot rely on looking up the NorthBridge PCI
  41  * ID, while the now ATA-133 capable 5513 still has the same PCI ID.
  42  * Fortunately the 5513 can be 'unmasked' by fiddling with some config space
  43  * bits, changing its device id to the true one - 5517 for 961 and 5518 for
  44  * 962/963.
  45  */
  46
  47 #include <linux/config.h>
  48 #include <linux/types.h>
  49 #include <linux/module.h>
  50 #include <linux/kernel.h>
  51 #include <linux/delay.h>
  52 #include <linux/timer.h>
  53 #include <linux/mm.h>
  54 #include <linux/ioport.h>
  55 #include <linux/blkdev.h>
  56 #include <linux/hdreg.h>
  57
  58 #include <linux/interrupt.h>
  59 #include <linux/pci.h>
  60 #include <linux/init.h>
  61 #include <linux/ide.h>
  62
  63 #include <asm/irq.h>
  64
  65 #include "ide-timing.h"
  66
  67 #define DISPLAY_SIS_TIMINGS
  68
  69 /* registers layout and init values are chipset family dependant */
  70
  71 #define ATA_16          0x01
  72 #define ATA_33          0x02
  73 #define ATA_66          0x03
  74 #define ATA_100a        0x04 // SiS730/SiS550 is ATA100 with ATA66 layout
  75 #define ATA_100         0x05
  76 #define ATA_133a        0x06 // SiS961b with 133 support
  77 #define ATA_133         0x07 // SiS962/963
  78
  79 static u8 chipset_family;
  80
  81 /*
  82  * Devices supported
  83  */
  84 static const struct {
  85         const char *name;
  86         u16 host_id;
  87         u8 chipset_family;
  88         u8 flags;
  89 } SiSHostChipInfo[] = {
  90         { "SiS745",     PCI_DEVICE_ID_SI_745,   ATA_100  },
  91         { "SiS735",     PCI_DEVICE_ID_SI_735,   ATA_100  },
  92         { "SiS733",     PCI_DEVICE_ID_SI_733,   ATA_100  },
  93         { "SiS635",     PCI_DEVICE_ID_SI_635,   ATA_100  },
  94         { "SiS633",     PCI_DEVICE_ID_SI_633,   ATA_100  },
  95
  96         { "SiS730",     PCI_DEVICE_ID_SI_730,   ATA_100a },
  97         { "SiS550",     PCI_DEVICE_ID_SI_550,   ATA_100a },
  98
  99         { "SiS640",     PCI_DEVICE_ID_SI_640,   ATA_66   },
 100         { "SiS630",     PCI_DEVICE_ID_SI_630,   ATA_66   },
 101         { "SiS620",     PCI_DEVICE_ID_SI_620,   ATA_66   },
 102         { "SiS540",     PCI_DEVICE_ID_SI_540,   ATA_66   },
 103         { "SiS530",     PCI_DEVICE_ID_SI_530,   ATA_66   },
 104
 105         { "SiS5600",    PCI_DEVICE_ID_SI_5600,  ATA_33   },
 106         { "SiS5598",    PCI_DEVICE_ID_SI_5598,  ATA_33   },
 107         { "SiS5597",    PCI_DEVICE_ID_SI_5597,  ATA_33   },
 108         { "SiS5591/2",  PCI_DEVICE_ID_SI_5591,  ATA_33   },
 109         { "SiS5582",    PCI_DEVICE_ID_SI_5582,  ATA_33   },
 110         { "SiS5581",    PCI_DEVICE_ID_SI_5581,  ATA_33   },
 111
 112         { "SiS5596",    PCI_DEVICE_ID_SI_5596,  ATA_16   },
 113         { "SiS5571",    PCI_DEVICE_ID_SI_5571,  ATA_16   },
 114         { "SiS551x",    PCI_DEVICE_ID_SI_5511,  ATA_16   },
 115 };
 116
 117 /* Cycle time bits and values vary across chip dma capabilities
 118    These three arrays hold the register layout and the values to set.
 119    Indexed by chipset_family and (dma_mode - XFER_UDMA_0) */
 120
 121 /* {0, ATA_16, ATA_33, ATA_66, ATA_100a, ATA_100, ATA_133} */
 122 static u8 cycle_time_offset[] = {0,0,5,4,4,0,0};
 123 static u8 cycle_time_range[] = {0,0,2,3,3,4,4};
 124 static u8 cycle_time_value[][XFER_UDMA_6 - XFER_UDMA_0 + 1] = {
 125         {0,0,0,0,0,0,0}, /* no udma */
 126         {0,0,0,0,0,0,0}, /* no udma */
 127         {3,2,1,0,0,0,0}, /* ATA_33 */
 128         {7,5,3,2,1,0,0}, /* ATA_66 */
 129         {7,5,3,2,1,0,0}, /* ATA_100a (730 specific), differences are on cycle_time range and offset */
 130         {11,7,5,4,2,1,0}, /* ATA_100 */
 131         {15,10,7,5,3,2,1}, /* ATA_133a (earliest 691 southbridges) */
 132         {15,10,7,5,3,2,1}, /* ATA_133 */
 133 };
 134 /* CRC Valid Setup Time vary across IDE clock setting 33/66/100/133
 135    See SiS962 data sheet for more detail */
 136 static u8 cvs_time_value[][XFER_UDMA_6 - XFER_UDMA_0 + 1] = {
 137         {0,0,0,0,0,0,0}, /* no udma */
 138         {0,0,0,0,0,0,0}, /* no udma */
 139         {2,1,1,0,0,0,0},
 140         {4,3,2,1,0,0,0},
 141         {4,3,2,1,0,0,0},
 142         {6,4,3,1,1,1,0},
 143         {9,6,4,2,2,2,2},
 144         {9,6,4,2,2,2,2},
 145 };
 146 /* Initialize time, Active time, Recovery time vary across
 147    IDE clock settings. These 3 arrays hold the register value
 148    for PIO0/1/2/3/4 and DMA0/1/2 mode in order */
 149 static u8 ini_time_value[][8] = {
 150         {0,0,0,0,0,0,0,0},
 151         {0,0,0,0,0,0,0,0},
 152         {2,1,0,0,0,1,0,0},
 153         {4,3,1,1,1,3,1,1},
 154         {4,3,1,1,1,3,1,1},
 155         {6,4,2,2,2,4,2,2},
 156         {9,6,3,3,3,6,3,3},
 157         {9,6,3,3,3,6,3,3},
 158 };
 159 static u8 act_time_value[][8] = {
 160         {0,0,0,0,0,0,0,0},
 161         {0,0,0,0,0,0,0,0},
 162         {9,9,9,2,2,7,2,2},
 163         {19,19,19,5,4,14,5,4},
 164         {19,19,19,5,4,14,5,4},
 165         {28,28,28,7,6,21,7,6},
 166         {38,38,38,10,9,28,10,9},
 167         {38,38,38,10,9,28,10,9},
 168 };
 169 static u8 rco_time_value[][8] = {
 170         {0,0,0,0,0,0,0,0},
 171         {0,0,0,0,0,0,0,0},
 172         {9,2,0,2,0,7,1,1},
 173         {19,5,1,5,2,16,3,2},
 174         {19,5,1,5,2,16,3,2},
 175         {30,9,3,9,4,25,6,4},
 176         {40,12,4,12,5,34,12,5},
 177         {40,12,4,12,5,34,12,5},
 178 };
 179
 180 /*
 181  * Printing configuration
 182  */
 183 /* Used for chipset type printing at boot time */
 184 static char* chipset_capability[] = {
 185         "ATA", "ATA 16",
 186         "ATA 33", "ATA 66",
 187         "ATA 100 (1st gen)", "ATA 100 (2nd gen)",
 188         "ATA 133 (1st gen)", "ATA 133 (2nd gen)"
 189 };
 190
 191 #if defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS)
 192 #include <linux/stat.h>
 193 #include <linux/proc_fs.h>
 194
 195 static u8 sis_proc = 0;
 196
 197 static struct pci_dev *bmide_dev;
 198
 199 static char* cable_type[] = {
 200         "80 pins",
 201         "40 pins"
 202 };
 203
 204 static char* recovery_time[] ={
 205         "12 PCICLK", "1 PCICLK",
 206         "2 PCICLK", "3 PCICLK",
 207         "4 PCICLK", "5 PCICLCK",
 208         "6 PCICLK", "7 PCICLCK",
 209         "8 PCICLK", "9 PCICLCK",
 210         "10 PCICLK", "11 PCICLK",
 211         "13 PCICLK", "14 PCICLK",
 212         "15 PCICLK", "15 PCICLK"
 213 };
 214
 215 static char* active_time[] = {
 216         "8 PCICLK", "1 PCICLCK",
 217         "2 PCICLK", "3 PCICLK",
 218         "4 PCICLK", "5 PCICLK",
 219         "6 PCICLK", "12 PCICLK"
 220 };
 221
 222 static char* cycle_time[] = {
 223         "Reserved", "2 CLK",
 224         "3 CLK", "4 CLK",
 225         "5 CLK", "6 CLK",
 226         "7 CLK", "8 CLK",
 227         "9 CLK", "10 CLK",
 228         "11 CLK", "12 CLK",
 229         "13 CLK", "14 CLK",
 230         "15 CLK", "16 CLK"
 231 };
 232
 233 /* Generic add master or slave info function */
 234 static char* get_drives_info (char *buffer, u8 pos)
 235 {
 236         u8 reg00, reg01, reg10, reg11; /* timing registers */
 237         u32 regdw0, regdw1;
 238         char* p = buffer;
 239
 240 /* Postwrite/Prefetch */
 241         if (chipset_family < ATA_133) {
 242                 pci_read_config_byte(bmide_dev, 0x4b, &reg00);
 243                 p += sprintf(p, "Drive %d:        Postwrite %s \t \t Postwrite %s\n",
 244                              pos, (reg00 & (0x10 << pos)) ? "Enabled" : "Disabled",
 245                              (reg00 & (0x40 << pos)) ? "Enabled" : "Disabled");
 246                 p += sprintf(p, "                Prefetch  %s \t \t Prefetch  %s\n",
 247                              (reg00 & (0x01 << pos)) ? "Enabled" : "Disabled",
 248                              (reg00 & (0x04 << pos)) ? "Enabled" : "Disabled");
 249                 pci_read_config_byte(bmide_dev, 0x40+2*pos, &reg00);
 250                 pci_read_config_byte(bmide_dev, 0x41+2*pos, &reg01);
 251                 pci_read_config_byte(bmide_dev, 0x44+2*pos, &reg10);
 252                 pci_read_config_byte(bmide_dev, 0x45+2*pos, &reg11);
 253         } else {
 254                 u32 reg54h;
 255                 u8 drive_pci = 0x40;
 256                 pci_read_config_dword(bmide_dev, 0x54, &reg54h);
 257                 if (reg54h & 0x40000000) {
 258                         // Configuration space remapped to 0x70
 259                         drive_pci = 0x70;
 260                 }
 261                 pci_read_config_dword(bmide_dev, (unsigned long)drive_pci+4*pos, &regdw0);
 262                 pci_read_config_dword(bmide_dev, (unsigned long)drive_pci+4*pos+8, &regdw1);
 263
 264                 p += sprintf(p, "Drive %d:\n", pos);
 265         }
 266
 267
 268 /* UDMA */
 269         if (chipset_family >= ATA_133) {
 270                 p += sprintf(p, "                UDMA %s \t \t \t UDMA %s\n",
 271                              (regdw0 & 0x04) ? "Enabled" : "Disabled",
 272                              (regdw1 & 0x04) ? "Enabled" : "Disabled");
 273                 p += sprintf(p, "                UDMA Cycle Time    %s \t UDMA Cycle Time    %s\n",
 274                              cycle_time[(regdw0 & 0xF0) >> 4],
 275                              cycle_time[(regdw1 & 0xF0) >> 4]);
 276         } else if (chipset_family >= ATA_33) {
 277                 p += sprintf(p, "                UDMA %s \t \t \t UDMA %s\n",
 278                              (reg01 & 0x80) ? "Enabled" : "Disabled",
 279                              (reg11 & 0x80) ? "Enabled" : "Disabled");
 280
 281                 p += sprintf(p, "                UDMA Cycle Time    ");
 282                 switch(chipset_family) {
 283                         case ATA_33:    p += sprintf(p, cycle_time[(reg01 & 0x60) >> 5]); break;
 284                         case ATA_66:
 285                         case ATA_100a:  p += sprintf(p, cycle_time[(reg01 & 0x70) >> 4]); break;
 286                         case ATA_100:
 287                         case ATA_133a:  p += sprintf(p, cycle_time[reg01 & 0x0F]); break;
 288                         default:        p += sprintf(p, "?"); break;
 289                 }
 290                 p += sprintf(p, " \t UDMA Cycle Time    ");
 291                 switch(chipset_family) {
 292                         case ATA_33:    p += sprintf(p, cycle_time[(reg11 & 0x60) >> 5]); break;
 293                         case ATA_66:
 294                         case ATA_100a:  p += sprintf(p, cycle_time[(reg11 & 0x70) >> 4]); break;
 295                         case ATA_100:
 296                         case ATA_133a:  p += sprintf(p, cycle_time[reg11 & 0x0F]); break;
 297                         default:        p += sprintf(p, "?"); break;
 298                 }
 299                 p += sprintf(p, "\n");
 300         }
 301
 302
 303         if (chipset_family < ATA_133) { /* else case TODO */
 304
 305 /* Data Active */
 306                 p += sprintf(p, "                Data Active Time   ");
 307                 switch(chipset_family) {
 308                         case ATA_16: /* confirmed */
 309                         case ATA_33:
 310                         case ATA_66:
 311                         case ATA_100a: p += sprintf(p, active_time[reg01 & 0x07]); break;
 312                         case ATA_100:
 313                         case ATA_133a: p += sprintf(p, active_time[(reg00 & 0x70) >> 4]); break;
 314                         default: p += sprintf(p, "?"); break;
 315                 }
 316                 p += sprintf(p, " \t Data Active Time   ");
 317                 switch(chipset_family) {
 318                         case ATA_16:
 319                         case ATA_33:
 320                         case ATA_66:
 321                         case ATA_100a: p += sprintf(p, active_time[reg11 & 0x07]); break;
 322                         case ATA_100:
 323                         case ATA_133a: p += sprintf(p, active_time[(reg10 & 0x70) >> 4]); break;
 324                         default: p += sprintf(p, "?"); break;
 325                 }
 326                 p += sprintf(p, "\n");
 327
 328 /* Data Recovery */
 329         /* warning: may need (reg&0x07) for pre ATA66 chips */
 330                 p += sprintf(p, "                Data Recovery Time %s \t Data Recovery Time %s\n",
 331                              recovery_time[reg00 & 0x0f], recovery_time[reg10 & 0x0f]);
 332         }
 333
 334         return p;
 335 }
 336
 337 static char* get_masters_info(char* buffer)
 338 {
 339         return get_drives_info(buffer, 0);
 340 }
 341
 342 static char* get_slaves_info(char* buffer)
 343 {
 344         return get_drives_info(buffer, 1);
 345 }
 346
 347 /* Main get_info, called on /proc/ide/sis reads */
 348 static int sis_get_info (char *buffer, char **addr, off_t offset, int count)
 349 {
 350         char *p = buffer;
 351         int len;
 352         u8 reg;
 353         u16 reg2, reg3;
 354
 355         p += sprintf(p, "\nSiS 5513 ");
 356         switch(chipset_family) {
 357                 case ATA_16: p += sprintf(p, "DMA 16"); break;
 358                 case ATA_33: p += sprintf(p, "Ultra 33"); break;
 359                 case ATA_66: p += sprintf(p, "Ultra 66"); break;
 360                 case ATA_100a:
 361                 case ATA_100: p += sprintf(p, "Ultra 100"); break;
 362                 case ATA_133a:
 363                 case ATA_133: p += sprintf(p, "Ultra 133"); break;
 364                 default: p+= sprintf(p, "Unknown???"); break;
 365         }
 366         p += sprintf(p, " chipset\n");
 367         p += sprintf(p, "--------------- Primary Channel "
 368                      "---------------- Secondary Channel "
 369                      "-------------\n");
 370
 371 /* Status */
 372         pci_read_config_byte(bmide_dev, 0x4a, &reg);
 373         if (chipset_family == ATA_133) {
 374                 pci_read_config_word(bmide_dev, 0x50, &reg2);
 375                 pci_read_config_word(bmide_dev, 0x52, &reg3);
 376         }
 377         p += sprintf(p, "Channel Status: ");
 378         if (chipset_family < ATA_66) {
 379                 p += sprintf(p, "%s \t \t \t \t %s\n",
 380                              (reg & 0x04) ? "On" : "Off",
 381                              (reg & 0x02) ? "On" : "Off");
 382         } else if (chipset_family < ATA_133) {
 383                 p += sprintf(p, "%s \t \t \t \t %s \n",
 384                              (reg & 0x02) ? "On" : "Off",
 385                              (reg & 0x04) ? "On" : "Off");
 386         } else { /* ATA_133 */
 387                 p += sprintf(p, "%s \t \t \t \t %s \n",
 388                              (reg2 & 0x02) ? "On" : "Off",
 389                              (reg3 & 0x02) ? "On" : "Off");
 390         }
 391
 392 /* Operation Mode */
 393         pci_read_config_byte(bmide_dev, 0x09, &reg);
 394         p += sprintf(p, "Operation Mode: %s \t \t \t %s \n",
 395                      (reg & 0x01) ? "Native" : "Compatible",
 396                      (reg & 0x04) ? "Native" : "Compatible");
 397
 398 /* 80-pin cable ? */
 399         if (chipset_family >= ATA_133) {
 400                 p += sprintf(p, "Cable Type:     %s \t \t \t %s\n",
 401                              (reg2 & 0x01) ? cable_type[1] : cable_type[0],
 402                              (reg3 & 0x01) ? cable_type[1] : cable_type[0]);
 403         } else if (chipset_family > ATA_33) {
 404                 pci_read_config_byte(bmide_dev, 0x48, &reg);
 405                 p += sprintf(p, "Cable Type:     %s \t \t \t %s\n",
 406                              (reg & 0x10) ? cable_type[1] : cable_type[0],
 407                              (reg & 0x20) ? cable_type[1] : cable_type[0]);
 408         }
 409
 410 /* Prefetch Count */
 411         if (chipset_family < ATA_133) {
 412                 pci_read_config_word(bmide_dev, 0x4c, &reg2);
 413                 pci_read_config_word(bmide_dev, 0x4e, &reg3);
 414                 p += sprintf(p, "Prefetch Count: %d \t \t \t \t %d\n",
 415                              reg2, reg3);
 416         }
 417
 418         p = get_masters_info(p);
 419         p = get_slaves_info(p);
 420
 421         len = (p - buffer) - offset;
 422         *addr = buffer + offset;
 423
 424         return len > count ? count : len;
 425 }
 426 #endif /* defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS) */
 427
 428 static u8 sis5513_ratemask (ide_drive_t *drive)
 429 {
 430         u8 rates[] = { 0, 0, 1, 2, 3, 3, 4, 4 };
 431         u8 mode = rates[chipset_family];
 432
 433         if (!eighty_ninty_three(drive))
 434                 mode = min(mode, (u8)1);
 435         return mode;
 436 }
 437
 438 /*
 439  * Configuration functions
 440  */
 441 /* Enables per-drive prefetch and postwrite */
 442 static void config_drive_art_rwp (ide_drive_t *drive)
 443 {
 444         ide_hwif_t *hwif        = HWIF(drive);
 445         struct pci_dev *dev     = hwif->pci_dev;
 446
 447         u8 reg4bh               = 0;
 448         u8 rw_prefetch          = (0x11 << drive->dn);
 449
 450         if (drive->media != ide_disk)
 451                 return;
 452         pci_read_config_byte(dev, 0x4b, &reg4bh);
 453
 454         if ((reg4bh & rw_prefetch) != rw_prefetch)
 455                 pci_write_config_byte(dev, 0x4b, reg4bh|rw_prefetch);
 456 }
 457
 458
 459 /* Set per-drive active and recovery time */
 460 static void config_art_rwp_pio (ide_drive_t *drive, u8 pio)
 461 {
 462         ide_hwif_t *hwif        = HWIF(drive);
 463         struct pci_dev *dev     = hwif->pci_dev;
 464
 465         u8                      timing, drive_pci, test1, test2;
 466
 467         u16 eide_pio_timing[6] = {600, 390, 240, 180, 120, 90};
 468         u16 xfer_pio = drive->id->eide_pio_modes;
 469
 470         config_drive_art_rwp(drive);
 471         pio = ide_get_best_pio_mode(drive, 255, pio, NULL);
 472
 473         if (xfer_pio> 4)
 474                 xfer_pio = 0;
 475
 476         if (drive->id->eide_pio_iordy > 0) {
 477                 for (xfer_pio = 5;
 478                         (xfer_pio > 0) &&
 479                         (drive->id->eide_pio_iordy > eide_pio_timing[xfer_pio]);
 480                         xfer_pio--);
 481         } else {
 482                 xfer_pio = (drive->id->eide_pio_modes & 4) ? 0x05 :
 483                            (drive->id->eide_pio_modes & 2) ? 0x04 :
 484                            (drive->id->eide_pio_modes & 1) ? 0x03 : xfer_pio;
 485         }
 486
 487         timing = (xfer_pio >= pio) ? xfer_pio : pio;
 488
 489         /* In pre ATA_133 case, drives sit at 0x40 + 4*drive->dn */
 490         drive_pci = 0x40;
 491         /* In SiS962 case drives sit at (0x40 or 0x70) + 8*drive->dn) */
 492         if (chipset_family >= ATA_133) {
 493                 u32 reg54h;
 494                 pci_read_config_dword(dev, 0x54, &reg54h);
 495                 if (reg54h & 0x40000000) drive_pci = 0x70;
 496                 drive_pci += ((drive->dn)*0x4);
 497         } else {
 498                 drive_pci += ((drive->dn)*0x2);
 499         }
 500
 501         /* register layout changed with newer ATA100 chips */
 502         if (chipset_family < ATA_100) {
 503                 pci_read_config_byte(dev, drive_pci, &test1);
 504                 pci_read_config_byte(dev, drive_pci+1, &test2);
 505
 506                 /* Clear active and recovery timings */
 507                 test1 &= ~0x0F;
 508                 test2 &= ~0x07;
 509
 510                 switch(timing) {
 511                         case 4:         test1 |= 0x01; test2 |= 0x03; break;
 512                         case 3:         test1 |= 0x03; test2 |= 0x03; break;
 513                         case 2:         test1 |= 0x04; test2 |= 0x04; break;
 514                         case 1:         test1 |= 0x07; test2 |= 0x06; break;
 515                         default:        break;
 516                 }
 517                 pci_write_config_byte(dev, drive_pci, test1);
 518                 pci_write_config_byte(dev, drive_pci+1, test2);
 519         } else if (chipset_family < ATA_133) {
 520                 switch(timing) { /*             active  recovery
 521                                                   v     v */
 522                         case 4:         test1 = 0x30|0x01; break;
 523                         case 3:         test1 = 0x30|0x03; break;
 524                         case 2:         test1 = 0x40|0x04; break;
 525                         case 1:         test1 = 0x60|0x07; break;
 526                         default:        break;
 527                 }
 528                 pci_write_config_byte(dev, drive_pci, test1);
 529         } else { /* ATA_133 */
 530                 u32 test3;
 531                 pci_read_config_dword(dev, drive_pci, &test3);
 532                 test3 &= 0xc0c00fff;
 533                 if (test3 & 0x08) {
 534                         test3 |= (unsigned long)ini_time_value[ATA_133][timing] << 12;
 535                         test3 |= (unsigned long)act_time_value[ATA_133][timing] << 16;
 536                         test3 |= (unsigned long)rco_time_value[ATA_133][timing] << 24;
 537                 } else {
 538                         test3 |= (unsigned long)ini_time_value[ATA_100][timing] << 12;
 539                         test3 |= (unsigned long)act_time_value[ATA_100][timing] << 16;
 540                         test3 |= (unsigned long)rco_time_value[ATA_100][timing] << 24;
 541                 }
 542                 pci_write_config_dword(dev, drive_pci, test3);
 543         }
 544 }
 545
 546 static int config_chipset_for_pio (ide_drive_t *drive, u8 pio)
 547 {
 548         if (pio == 255)
 549                 pio = ide_find_best_mode(drive, XFER_PIO | XFER_EPIO) - XFER_PIO_0;
 550         config_art_rwp_pio(drive, pio);
 551         return ide_config_drive_speed(drive, XFER_PIO_0 + min_t(u8, pio, 4));
 552 }
 553
 554 static int sis5513_tune_chipset (ide_drive_t *drive, u8 xferspeed)
 555 {
 556         ide_hwif_t *hwif        = HWIF(drive);
 557         struct pci_dev *dev     = hwif->pci_dev;
 558
 559         u8 drive_pci, reg, speed;
 560         u32 regdw;
 561
 562         speed = ide_rate_filter(sis5513_ratemask(drive), xferspeed);
 563
 564         /* See config_art_rwp_pio for drive pci config registers */
 565         drive_pci = 0x40;
 566         if (chipset_family >= ATA_133) {
 567                 u32 reg54h;
 568                 pci_read_config_dword(dev, 0x54, &reg54h);
 569                 if (reg54h & 0x40000000) drive_pci = 0x70;
 570                 drive_pci += ((drive->dn)*0x4);
 571                 pci_read_config_dword(dev, (unsigned long)drive_pci, &regdw);
 572                 /* Disable UDMA bit for non UDMA modes on UDMA chips */
 573                 if (speed < XFER_UDMA_0) {
 574                         regdw &= 0xfffffffb;
 575                         pci_write_config_dword(dev, (unsigned long)drive_pci, regdw);
 576                 }
 577
 578         } else {
 579                 drive_pci += ((drive->dn)*0x2);
 580                 pci_read_config_byte(dev, drive_pci+1, &reg);
 581                 /* Disable UDMA bit for non UDMA modes on UDMA chips */
 582                 if ((speed < XFER_UDMA_0) && (chipset_family > ATA_16)) {
 583                         reg &= 0x7F;
 584                         pci_write_config_byte(dev, drive_pci+1, reg);
 585                 }
 586         }
 587
 588         /* Config chip for mode */
 589         switch(speed) {
 590                 case XFER_UDMA_6:
 591                 case XFER_UDMA_5:
 592                 case XFER_UDMA_4:
 593                 case XFER_UDMA_3:
 594                 case XFER_UDMA_2:
 595                 case XFER_UDMA_1:
 596                 case XFER_UDMA_0:
 597                         if (chipset_family >= ATA_133) {
 598                                 regdw |= 0x04;
 599                                 regdw &= 0xfffff00f;
 600                                 /* check if ATA133 enable */
 601                                 if (regdw & 0x08) {
 602                                         regdw |= (unsigned long)cycle_time_value[ATA_133][speed-XFER_UDMA_0] << 4;
 603                                         regdw |= (unsigned long)cvs_time_value[ATA_133][speed-XFER_UDMA_0] << 8;
 604                                 } else {
 605                                 /* if ATA133 disable, we should not set speed above UDMA5 */
 606                                         if (speed > XFER_UDMA_5)
 607                                                 speed = XFER_UDMA_5;
 608                                         regdw |= (unsigned long)cycle_time_value[ATA_100][speed-XFER_UDMA_0] << 4;
 609                                         regdw |= (unsigned long)cvs_time_value[ATA_100][speed-XFER_UDMA_0] << 8;
 610                                 }
 611                                 pci_write_config_dword(dev, (unsigned long)drive_pci, regdw);
 612                         } else {
 613                                 /* Force the UDMA bit on if we want to use UDMA */
 614                                 reg |= 0x80;
 615                                 /* clean reg cycle time bits */
 616                                 reg &= ~((0xFF >> (8 - cycle_time_range[chipset_family]))
 617                                          << cycle_time_offset[chipset_family]);
 618                                 /* set reg cycle time bits */
 619                                 reg |= cycle_time_value[chipset_family][speed-XFER_UDMA_0]
 620                                         << cycle_time_offset[chipset_family];
 621                                 pci_write_config_byte(dev, drive_pci+1, reg);
 622                         }
 623                         break;
 624                 case XFER_MW_DMA_2:
 625                 case XFER_MW_DMA_1:
 626                 case XFER_MW_DMA_0:
 627                 case XFER_SW_DMA_2:
 628                 case XFER_SW_DMA_1:
 629                 case XFER_SW_DMA_0:
 630                         break;
 631                 case XFER_PIO_4: return((int) config_chipset_for_pio(drive, 4));
 632                 case XFER_PIO_3: return((int) config_chipset_for_pio(drive, 3));
 633                 case XFER_PIO_2: return((int) config_chipset_for_pio(drive, 2));
 634                 case XFER_PIO_1: return((int) config_chipset_for_pio(drive, 1));
 635                 case XFER_PIO_0:
 636                 default:         return((int) config_chipset_for_pio(drive, 0));
 637         }
 638
 639         return ((int) ide_config_drive_speed(drive, speed));
 640 }
 641
 642 static void sis5513_tune_drive (ide_drive_t *drive, u8 pio)
 643 {
 644         (void) config_chipset_for_pio(drive, pio);
 645 }
 646
 647 /*
 648  * ((id->hw_config & 0x4000|0x2000) && (HWIF(drive)->udma_four))
 649  */
 650 static int config_chipset_for_dma (ide_drive_t *drive)
 651 {
 652         u8 speed        = ide_dma_speed(drive, sis5513_ratemask(drive));
 653
 654 #ifdef DEBUG
 655         printk("SIS5513: config_chipset_for_dma, drive %d, ultra %x\n",
 656                drive->dn, drive->id->dma_ultra);
 657 #endif
 658
 659         if (!(speed))
 660                 return 0;
 661
 662         sis5513_tune_chipset(drive, speed);
 663         return ide_dma_enable(drive);
 664 }
 665
 666 static int sis5513_config_drive_xfer_rate (ide_drive_t *drive)
 667 {
 668         ide_hwif_t *hwif        = HWIF(drive);
 669         struct hd_driveid *id   = drive->id;
 670
 671         drive->init_speed = 0;
 672
 673         if (id && (id->capability & 1) && drive->autodma) {
 674
 675                 if (ide_use_dma(drive)) {
 676                         if (config_chipset_for_dma(drive))
 677                                 return hwif->ide_dma_on(drive);
 678                 }
 679
 680                 goto fast_ata_pio;
 681
 682         } else if ((id->capability & 8) || (id->field_valid & 2)) {
 683 fast_ata_pio:
 684                 sis5513_tune_drive(drive, 5);
 685                 return hwif->ide_dma_off_quietly(drive);
 686         }
 687         /* IORDY not supported */
 688         return 0;
 689 }
 690
 691 /* initiates/aborts (U)DMA read/write operations on a drive. */
 692 static int sis5513_config_xfer_rate (ide_drive_t *drive)
 693 {
 694         config_drive_art_rwp(drive);
 695         config_art_rwp_pio(drive, 5);
 696         return sis5513_config_drive_xfer_rate(drive);
 697 }
 698
 699 /*
 700   Future simpler config_xfer_rate :
 701    When ide_find_best_mode is made bad-drive aware
 702    - remove config_drive_xfer_rate and config_chipset_for_dma,
 703    - replace config_xfer_rate with the following
 704
 705 static int sis5513_config_xfer_rate (ide_drive_t *drive)
 706 {
 707         u16 w80 = HWIF(drive)->udma_four;
 708         u16 speed;
 709
 710         config_drive_art_rwp(drive);
 711         config_art_rwp_pio(drive, 5);
 712
 713         speed = ide_find_best_mode(drive,
 714                 XFER_PIO | XFER_EPIO | XFER_SWDMA | XFER_MWDMA |
 715                 (chipset_family >= ATA_33 ? XFER_UDMA : 0) |
 716                 (w80 && chipset_family >= ATA_66 ? XFER_UDMA_66 : 0) |
 717                 (w80 && chipset_family >= ATA_100a ? XFER_UDMA_100 : 0) |
 718                 (w80 && chipset_family >= ATA_133a ? XFER_UDMA_133 : 0));
 719
 720         sis5513_tune_chipset(drive, speed);
 721
 722         if (drive->autodma && (speed & XFER_MODE) != XFER_PIO)
 723                 return HWIF(drive)->ide_dma_on(drive);
 724         return HWIF(drive)->ide_dma_off_quietly(drive);
 725 }
 726 */
 727
 728 /* Chip detection and general config */
 729 static unsigned int __devinit init_chipset_sis5513 (struct pci_dev *dev, const char *name)
 730 {
 731         struct pci_dev *host;
 732         int i = 0;
 733
 734         chipset_family = 0;
 735
 736         for (i = 0; i < ARRAY_SIZE(SiSHostChipInfo) && !chipset_family; i++) {
 737
 738                 host = pci_find_device(PCI_VENDOR_ID_SI, SiSHostChipInfo[i].host_id, NULL);
 739
 740                 if (!host)
 741                         continue;
 742
 743                 chipset_family = SiSHostChipInfo[i].chipset_family;
 744
 745                 /* Special case for SiS630 : 630S/ET is ATA_100a */
 746                 if (SiSHostChipInfo[i].host_id == PCI_DEVICE_ID_SI_630) {
 747                         u8 hostrev;
 748                         pci_read_config_byte(host, PCI_REVISION_ID, &hostrev);
 749                         if (hostrev >= 0x30)
 750                                 chipset_family = ATA_100a;
 751                 }
 752
 753                 printk(KERN_INFO "SIS5513: %s %s controller\n",
 754                          SiSHostChipInfo[i].name, chipset_capability[chipset_family]);
 755         }
 756
 757         if (!chipset_family) { /* Belongs to pci-quirks */
 758
 759                         u32 idemisc;
 760                         u16 trueid;
 761
 762                         /* Disable ID masking and register remapping */
 763                         pci_read_config_dword(dev, 0x54, &idemisc);
 764                         pci_write_config_dword(dev, 0x54, (idemisc & 0x7fffffff));
 765                         pci_read_config_word(dev, PCI_DEVICE_ID, &trueid);
 766                         pci_write_config_dword(dev, 0x54, idemisc);
 767
 768                         if (trueid == 0x5518) {
 769                                 printk(KERN_INFO "SIS5513: SiS 962/963 MuTIOL IDE UDMA133 controller\n");
 770                                 chipset_family = ATA_133;
 771
 772                                 /* Check for 5513 compability mapping
 773                                  * We must use this, else the port enabled code will fail,
 774                                  * as it expects the enablebits at 0x4a.
 775                                  */
 776                                 if ((idemisc & 0x40000000) == 0) {
 777                                         pci_write_config_dword(dev, 0x54, idemisc | 0x40000000);
 778                                         printk(KERN_INFO "SIS5513: Switching to 5513 register mapping\n");
 779                                 }
 780                         }
 781         }
 782
 783         if (!chipset_family) { /* Belongs to pci-quirks */
 784
 785                         struct pci_dev *lpc_bridge;
 786                         u16 trueid;
 787                         u8 prefctl;
 788                         u8 idecfg;
 789                         u8 sbrev;
 790
 791                         pci_read_config_byte(dev, 0x4a, &idecfg);
 792                         pci_write_config_byte(dev, 0x4a, idecfg | 0x10);
 793                         pci_read_config_word(dev, PCI_DEVICE_ID, &trueid);
 794                         pci_write_config_byte(dev, 0x4a, idecfg);
 795
 796                         if (trueid == 0x5517) { /* SiS 961/961B */
 797
 798                                 lpc_bridge = pci_find_slot(0x00, 0x10); /* Bus 0, Dev 2, Fn 0 */
 799                                 pci_read_config_byte(lpc_bridge, PCI_REVISION_ID, &sbrev);
 800                                 pci_read_config_byte(dev, 0x49, &prefctl);
 801
 802                                 if (sbrev == 0x10 && (prefctl & 0x80)) {
 803                                         printk(KERN_INFO "SIS5513: SiS 961B MuTIOL IDE UDMA133 controller\n");
 804                                         chipset_family = ATA_133a;
 805                                 } else {
 806                                         printk(KERN_INFO "SIS5513: SiS 961 MuTIOL IDE UDMA100 controller\n");
 807                                         chipset_family = ATA_100;
 808                                 }
 809                         }
 810         }
 811
 812         if (!chipset_family)
 813                 return -1;
 814
 815         /* Make general config ops here
 816            1/ tell IDE channels to operate in Compatibility mode only
 817            2/ tell old chips to allow per drive IDE timings */
 818
 819         {
 820                 u8 reg;
 821                 u16 regw;
 822
 823                 switch(chipset_family) {
 824                         case ATA_133:
 825                                 /* SiS962 operation mode */
 826                                 pci_read_config_word(dev, 0x50, &regw);
 827                                 if (regw & 0x08)
 828                                         pci_write_config_word(dev, 0x50, regw&0xfff7);
 829                                 pci_read_config_word(dev, 0x52, &regw);
 830                                 if (regw & 0x08)
 831                                         pci_write_config_word(dev, 0x52, regw&0xfff7);
 832                                 break;
 833                         case ATA_133a:
 834                         case ATA_100:
 835                                 /* Fixup latency */
 836                                 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x80);
 837                                 /* Set compatibility bit */
 838                                 pci_read_config_byte(dev, 0x49, &reg);
 839                                 if (!(reg & 0x01)) {
 840                                         pci_write_config_byte(dev, 0x49, reg|0x01);
 841                                 }
 842                                 break;
 843                         case ATA_100a:
 844                         case ATA_66:
 845                                 /* Fixup latency */
 846                                 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x10);
 847
 848                                 /* On ATA_66 chips the bit was elsewhere */
 849                                 pci_read_config_byte(dev, 0x52, &reg);
 850                                 if (!(reg & 0x04)) {
 851                                         pci_write_config_byte(dev, 0x52, reg|0x04);
 852                                 }
 853                                 break;
 854                         case ATA_33:
 855                                 /* On ATA_33 we didn't have a single bit to set */
 856                                 pci_read_config_byte(dev, 0x09, &reg);
 857                                 if ((reg & 0x0f) != 0x00) {
 858                                         pci_write_config_byte(dev, 0x09, reg&0xf0);
 859                                 }
 860                         case ATA_16:
 861                                 /* force per drive recovery and active timings
 862                                    needed on ATA_33 and below chips */
 863                                 pci_read_config_byte(dev, 0x52, &reg);
 864                                 if (!(reg & 0x08)) {
 865                                         pci_write_config_byte(dev, 0x52, reg|0x08);
 866                                 }
 867                                 break;
 868                 }
 869
 870 #if defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS)
 871                 if (!sis_proc) {
 872                         sis_proc = 1;
 873                         bmide_dev = dev;
 874                         ide_pci_create_host_proc("sis", sis_get_info);
 875                 }
 876 #endif
 877         }
 878
 879         return 0;
 880 }
 881
 882 static unsigned int __devinit ata66_sis5513 (ide_hwif_t *hwif)
 883 {
 884         u8 ata66 = 0;
 885
 886         if (chipset_family >= ATA_133) {
 887                 u16 regw = 0;
 888                 u16 reg_addr = hwif->channel ? 0x52: 0x50;
 889                 pci_read_config_word(hwif->pci_dev, reg_addr, &regw);
 890                 ata66 = (regw & 0x8000) ? 0 : 1;
 891         } else if (chipset_family >= ATA_66) {
 892                 u8 reg48h = 0;
 893                 u8 mask = hwif->channel ? 0x20 : 0x10;
 894                 pci_read_config_byte(hwif->pci_dev, 0x48, &reg48h);
 895                 ata66 = (reg48h & mask) ? 0 : 1;
 896         }
 897         return ata66;
 898 }
 899
 900 static void __devinit init_hwif_sis5513 (ide_hwif_t *hwif)
 901 {
 902         hwif->autodma = 0;
 903
 904         if (!hwif->irq)
 905                 hwif->irq = hwif->channel ? 15 : 14;
 906
 907         hwif->tuneproc = &sis5513_tune_drive;
 908         hwif->speedproc = &sis5513_tune_chipset;
 909
 910         if (!(hwif->dma_base)) {
 911                 hwif->drives[0].autotune = 1;
 912                 hwif->drives[1].autotune = 1;
 913                 return;
 914         }
 915
 916         hwif->atapi_dma = 1;
 917         hwif->ultra_mask = 0x7f;
 918         hwif->mwdma_mask = 0x07;
 919         hwif->swdma_mask = 0x07;
 920
 921         if (!chipset_family)
 922                 return;
 923
 924         if (!(hwif->udma_four))
 925                 hwif->udma_four = ata66_sis5513(hwif);
 926
 927         if (chipset_family > ATA_16) {
 928                 hwif->ide_dma_check = &sis5513_config_xfer_rate;
 929                 if (!noautodma)
 930                         hwif->autodma = 1;
 931         }
 932         hwif->drives[0].autodma = hwif->autodma;
 933         hwif->drives[1].autodma = hwif->autodma;
 934         return;
 935 }
 936
 937 static ide_pci_device_t sis5513_chipset __devinitdata = {
 938         .name           = "SIS5513",
 939         .init_chipset   = init_chipset_sis5513,
 940         .init_hwif      = init_hwif_sis5513,
 941         .channels       = 2,
 942         .autodma        = NOAUTODMA,
 943         .enablebits     = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
 944         .bootable       = ON_BOARD,
 945 };
 946
 947 static int __devinit sis5513_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 948 {
 949         return ide_setup_pci_device(dev, &sis5513_chipset);
 950 }
 951
 952 static struct pci_device_id sis5513_pci_tbl[] = {
 953         { PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5513, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
 954         { PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5518, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
 955         { 0, },
 956 };
 957 MODULE_DEVICE_TABLE(pci, sis5513_pci_tbl);
 958
 959 static struct pci_driver driver = {
 960         .name           = "SIS_IDE",
 961         .id_table       = sis5513_pci_tbl,
 962         .probe          = sis5513_init_one,
 963 };
 964
 965 static int sis5513_ide_init(void)
 966 {
 967         return ide_pci_register_driver(&driver);
 968 }
 969
 970 module_init(sis5513_ide_init);
 971
 972 MODULE_AUTHOR("Lionel Bouton, L C Chang, Andre Hedrick, Vojtech Pavlik");
 973 MODULE_DESCRIPTION("PCI driver module for SIS IDE");
 974 MODULE_LICENSE("GPL");
 975
 976 /*
 977  * TODO:
 978  *      - CLEANUP
 979  *      - Use drivers/ide/ide-timing.h !
 980  *      - More checks in the config registers (force values instead of
 981  *        relying on the BIOS setting them correctly).
 982  *      - Further optimisations ?
 983  *        . for example ATA66+ regs 0x48 & 0x4A
 984  */