drivers/ide/pci/sis5513.c

   1 /*
   2  * linux/drivers/ide/pci/sis5513.c      Version 0.20    Mar 4, 2007
   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  * Copyright (C) 2007           Bartlomiej Zolnierkiewicz
   8  *
   9  * May be copied or modified under the terms of the GNU General Public License
  10  *
  11  *
  12  * Thanks :
  13  *
  14  * SiS Taiwan           : for direct support and hardware.
  15  * Daniela Engert       : for initial ATA100 advices and numerous others.
  16  * John Fremlin, Manfred Spraul, Dave Morgan, Peter Kjellerstedt        :
  17  *                        for checking code correctness, providing patches.
  18  *
  19  *
  20  * Original tests and design on the SiS620 chipset.
  21  * ATA100 tests and design on the SiS735 chipset.
  22  * ATA16/33 support from specs
  23  * ATA133 support for SiS961/962 by L.C. Chang <lcchang@sis.com.tw>
  24  * ATA133 961/962/963 fixes by Vojtech Pavlik <vojtech@suse.cz>
  25  *
  26  * Documentation:
  27  *      SiS chipset documentation available under NDA to companies only
  28  *      (not to individuals).
  29  */
  30
  31 /*
  32  * The original SiS5513 comes from a SiS5511/55112/5513 chipset. The original
  33  * SiS5513 was also used in the SiS5596/5513 chipset. Thus if we see a SiS5511
  34  * or SiS5596, we can assume we see the first MWDMA-16 capable SiS5513 chip.
  35  *
  36  * Later SiS chipsets integrated the 5513 functionality into the NorthBridge,
  37  * starting with SiS5571 and up to SiS745. The PCI ID didn't change, though. We
  38  * can figure out that we have a more modern and more capable 5513 by looking
  39  * for the respective NorthBridge IDs.
  40  *
  41  * Even later (96x family) SiS chipsets use the MuTIOL link and place the 5513
  42  * into the SouthBrige. Here we cannot rely on looking up the NorthBridge PCI
  43  * ID, while the now ATA-133 capable 5513 still has the same PCI ID.
  44  * Fortunately the 5513 can be 'unmasked' by fiddling with some config space
  45  * bits, changing its device id to the true one - 5517 for 961 and 5518 for
  46  * 962/963.
  47  */
  48
  49 #include <linux/types.h>
  50 #include <linux/module.h>
  51 #include <linux/kernel.h>
  52 #include <linux/delay.h>
  53 #include <linux/timer.h>
  54 #include <linux/mm.h>
  55 #include <linux/ioport.h>
  56 #include <linux/blkdev.h>
  57 #include <linux/hdreg.h>
  58
  59 #include <linux/interrupt.h>
  60 #include <linux/pci.h>
  61 #include <linux/init.h>
  62 #include <linux/ide.h>
  63
  64 #include <asm/irq.h>
  65
  66 #include "ide-timing.h"
  67
  68 #define DISPLAY_SIS_TIMINGS
  69
  70 /* registers layout and init values are chipset family dependant */
  71
  72 #define ATA_16          0x01
  73 #define ATA_33          0x02
  74 #define ATA_66          0x03
  75 #define ATA_100a        0x04 // SiS730/SiS550 is ATA100 with ATA66 layout
  76 #define ATA_100         0x05
  77 #define ATA_133a        0x06 // SiS961b with 133 support
  78 #define ATA_133         0x07 // SiS962/963
  79
  80 static u8 chipset_family;
  81
  82 /*
  83  * Devices supported
  84  */
  85 static const struct {
  86         const char *name;
  87         u16 host_id;
  88         u8 chipset_family;
  89         u8 flags;
  90 } SiSHostChipInfo[] = {
  91         { "SiS968",     PCI_DEVICE_ID_SI_968,   ATA_133  },
  92         { "SiS966",     PCI_DEVICE_ID_SI_966,   ATA_133  },
  93         { "SiS965",     PCI_DEVICE_ID_SI_965,   ATA_133  },
  94         { "SiS745",     PCI_DEVICE_ID_SI_745,   ATA_100  },
  95         { "SiS735",     PCI_DEVICE_ID_SI_735,   ATA_100  },
  96         { "SiS733",     PCI_DEVICE_ID_SI_733,   ATA_100  },
  97         { "SiS635",     PCI_DEVICE_ID_SI_635,   ATA_100  },
  98         { "SiS633",     PCI_DEVICE_ID_SI_633,   ATA_100  },
  99
 100         { "SiS730",     PCI_DEVICE_ID_SI_730,   ATA_100a },
 101         { "SiS550",     PCI_DEVICE_ID_SI_550,   ATA_100a },
 102
 103         { "SiS640",     PCI_DEVICE_ID_SI_640,   ATA_66   },
 104         { "SiS630",     PCI_DEVICE_ID_SI_630,   ATA_66   },
 105         { "SiS620",     PCI_DEVICE_ID_SI_620,   ATA_66   },
 106         { "SiS540",     PCI_DEVICE_ID_SI_540,   ATA_66   },
 107         { "SiS530",     PCI_DEVICE_ID_SI_530,   ATA_66   },
 108
 109         { "SiS5600",    PCI_DEVICE_ID_SI_5600,  ATA_33   },
 110         { "SiS5598",    PCI_DEVICE_ID_SI_5598,  ATA_33   },
 111         { "SiS5597",    PCI_DEVICE_ID_SI_5597,  ATA_33   },
 112         { "SiS5591/2",  PCI_DEVICE_ID_SI_5591,  ATA_33   },
 113         { "SiS5582",    PCI_DEVICE_ID_SI_5582,  ATA_33   },
 114         { "SiS5581",    PCI_DEVICE_ID_SI_5581,  ATA_33   },
 115
 116         { "SiS5596",    PCI_DEVICE_ID_SI_5596,  ATA_16   },
 117         { "SiS5571",    PCI_DEVICE_ID_SI_5571,  ATA_16   },
 118         { "SiS5517",    PCI_DEVICE_ID_SI_5517,  ATA_16   },
 119         { "SiS551x",    PCI_DEVICE_ID_SI_5511,  ATA_16   },
 120 };
 121
 122 /* Cycle time bits and values vary across chip dma capabilities
 123    These three arrays hold the register layout and the values to set.
 124    Indexed by chipset_family and (dma_mode - XFER_UDMA_0) */
 125
 126 /* {0, ATA_16, ATA_33, ATA_66, ATA_100a, ATA_100, ATA_133} */
 127 static u8 cycle_time_offset[] = {0,0,5,4,4,0,0};
 128 static u8 cycle_time_range[] = {0,0,2,3,3,4,4};
 129 static u8 cycle_time_value[][XFER_UDMA_6 - XFER_UDMA_0 + 1] = {
 130         {0,0,0,0,0,0,0}, /* no udma */
 131         {0,0,0,0,0,0,0}, /* no udma */
 132         {3,2,1,0,0,0,0}, /* ATA_33 */
 133         {7,5,3,2,1,0,0}, /* ATA_66 */
 134         {7,5,3,2,1,0,0}, /* ATA_100a (730 specific), differences are on cycle_time range and offset */
 135         {11,7,5,4,2,1,0}, /* ATA_100 */
 136         {15,10,7,5,3,2,1}, /* ATA_133a (earliest 691 southbridges) */
 137         {15,10,7,5,3,2,1}, /* ATA_133 */
 138 };
 139 /* CRC Valid Setup Time vary across IDE clock setting 33/66/100/133
 140    See SiS962 data sheet for more detail */
 141 static u8 cvs_time_value[][XFER_UDMA_6 - XFER_UDMA_0 + 1] = {
 142         {0,0,0,0,0,0,0}, /* no udma */
 143         {0,0,0,0,0,0,0}, /* no udma */
 144         {2,1,1,0,0,0,0},
 145         {4,3,2,1,0,0,0},
 146         {4,3,2,1,0,0,0},
 147         {6,4,3,1,1,1,0},
 148         {9,6,4,2,2,2,2},
 149         {9,6,4,2,2,2,2},
 150 };
 151 /* Initialize time, Active time, Recovery time vary across
 152    IDE clock settings. These 3 arrays hold the register value
 153    for PIO0/1/2/3/4 and DMA0/1/2 mode in order */
 154 static u8 ini_time_value[][8] = {
 155         {0,0,0,0,0,0,0,0},
 156         {0,0,0,0,0,0,0,0},
 157         {2,1,0,0,0,1,0,0},
 158         {4,3,1,1,1,3,1,1},
 159         {4,3,1,1,1,3,1,1},
 160         {6,4,2,2,2,4,2,2},
 161         {9,6,3,3,3,6,3,3},
 162         {9,6,3,3,3,6,3,3},
 163 };
 164 static u8 act_time_value[][8] = {
 165         {0,0,0,0,0,0,0,0},
 166         {0,0,0,0,0,0,0,0},
 167         {9,9,9,2,2,7,2,2},
 168         {19,19,19,5,4,14,5,4},
 169         {19,19,19,5,4,14,5,4},
 170         {28,28,28,7,6,21,7,6},
 171         {38,38,38,10,9,28,10,9},
 172         {38,38,38,10,9,28,10,9},
 173 };
 174 static u8 rco_time_value[][8] = {
 175         {0,0,0,0,0,0,0,0},
 176         {0,0,0,0,0,0,0,0},
 177         {9,2,0,2,0,7,1,1},
 178         {19,5,1,5,2,16,3,2},
 179         {19,5,1,5,2,16,3,2},
 180         {30,9,3,9,4,25,6,4},
 181         {40,12,4,12,5,34,12,5},
 182         {40,12,4,12,5,34,12,5},
 183 };
 184
 185 /*
 186  * Printing configuration
 187  */
 188 /* Used for chipset type printing at boot time */
 189 static char* chipset_capability[] = {
 190         "ATA", "ATA 16",
 191         "ATA 33", "ATA 66",
 192         "ATA 100 (1st gen)", "ATA 100 (2nd gen)",
 193         "ATA 133 (1st gen)", "ATA 133 (2nd gen)"
 194 };
 195
 196 #if defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_IDE_PROC_FS)
 197 #include <linux/stat.h>
 198 #include <linux/proc_fs.h>
 199
 200 static u8 sis_proc = 0;
 201
 202 static struct pci_dev *bmide_dev;
 203
 204 static char* cable_type[] = {
 205         "80 pins",
 206         "40 pins"
 207 };
 208
 209 static char* recovery_time[] ={
 210         "12 PCICLK", "1 PCICLK",
 211         "2 PCICLK", "3 PCICLK",
 212         "4 PCICLK", "5 PCICLCK",
 213         "6 PCICLK", "7 PCICLCK",
 214         "8 PCICLK", "9 PCICLCK",
 215         "10 PCICLK", "11 PCICLK",
 216         "13 PCICLK", "14 PCICLK",
 217         "15 PCICLK", "15 PCICLK"
 218 };
 219
 220 static char* active_time[] = {
 221         "8 PCICLK", "1 PCICLCK",
 222         "2 PCICLK", "3 PCICLK",
 223         "4 PCICLK", "5 PCICLK",
 224         "6 PCICLK", "12 PCICLK"
 225 };
 226
 227 static char* cycle_time[] = {
 228         "Reserved", "2 CLK",
 229         "3 CLK", "4 CLK",
 230         "5 CLK", "6 CLK",
 231         "7 CLK", "8 CLK",
 232         "9 CLK", "10 CLK",
 233         "11 CLK", "12 CLK",
 234         "13 CLK", "14 CLK",
 235         "15 CLK", "16 CLK"
 236 };
 237
 238 /* Generic add master or slave info function */
 239 static char* get_drives_info (char *buffer, u8 pos)
 240 {
 241         u8 reg00, reg01, reg10, reg11; /* timing registers */
 242         u32 regdw0, regdw1;
 243         char* p = buffer;
 244
 245 /* Postwrite/Prefetch */
 246         if (chipset_family < ATA_133) {
 247                 pci_read_config_byte(bmide_dev, 0x4b, &reg00);
 248                 p += sprintf(p, "Drive %d:        Postwrite %s \t \t Postwrite %s\n",
 249                              pos, (reg00 & (0x10 << pos)) ? "Enabled" : "Disabled",
 250                              (reg00 & (0x40 << pos)) ? "Enabled" : "Disabled");
 251                 p += sprintf(p, "                Prefetch  %s \t \t Prefetch  %s\n",
 252                              (reg00 & (0x01 << pos)) ? "Enabled" : "Disabled",
 253                              (reg00 & (0x04 << pos)) ? "Enabled" : "Disabled");
 254                 pci_read_config_byte(bmide_dev, 0x40+2*pos, &reg00);
 255                 pci_read_config_byte(bmide_dev, 0x41+2*pos, &reg01);
 256                 pci_read_config_byte(bmide_dev, 0x44+2*pos, &reg10);
 257                 pci_read_config_byte(bmide_dev, 0x45+2*pos, &reg11);
 258         } else {
 259                 u32 reg54h;
 260                 u8 drive_pci = 0x40;
 261                 pci_read_config_dword(bmide_dev, 0x54, &reg54h);
 262                 if (reg54h & 0x40000000) {
 263                         // Configuration space remapped to 0x70
 264                         drive_pci = 0x70;
 265                 }
 266                 pci_read_config_dword(bmide_dev, (unsigned long)drive_pci+4*pos, &regdw0);
 267                 pci_read_config_dword(bmide_dev, (unsigned long)drive_pci+4*pos+8, &regdw1);
 268
 269                 p += sprintf(p, "Drive %d:\n", pos);
 270         }
 271
 272
 273 /* UDMA */
 274         if (chipset_family >= ATA_133) {
 275                 p += sprintf(p, "                UDMA %s \t \t \t UDMA %s\n",
 276                              (regdw0 & 0x04) ? "Enabled" : "Disabled",
 277                              (regdw1 & 0x04) ? "Enabled" : "Disabled");
 278                 p += sprintf(p, "                UDMA Cycle Time    %s \t UDMA Cycle Time    %s\n",
 279                              cycle_time[(regdw0 & 0xF0) >> 4],
 280                              cycle_time[(regdw1 & 0xF0) >> 4]);
 281         } else if (chipset_family >= ATA_33) {
 282                 p += sprintf(p, "                UDMA %s \t \t \t UDMA %s\n",
 283                              (reg01 & 0x80) ? "Enabled" : "Disabled",
 284                              (reg11 & 0x80) ? "Enabled" : "Disabled");
 285
 286                 p += sprintf(p, "                UDMA Cycle Time    ");
 287                 switch(chipset_family) {
 288                         case ATA_33:    p += sprintf(p, cycle_time[(reg01 & 0x60) >> 5]); break;
 289                         case ATA_66:
 290                         case ATA_100a:  p += sprintf(p, cycle_time[(reg01 & 0x70) >> 4]); break;
 291                         case ATA_100:
 292                         case ATA_133a:  p += sprintf(p, cycle_time[reg01 & 0x0F]); break;
 293                         default:        p += sprintf(p, "?"); break;
 294                 }
 295                 p += sprintf(p, " \t UDMA Cycle Time    ");
 296                 switch(chipset_family) {
 297                         case ATA_33:    p += sprintf(p, cycle_time[(reg11 & 0x60) >> 5]); break;
 298                         case ATA_66:
 299                         case ATA_100a:  p += sprintf(p, cycle_time[(reg11 & 0x70) >> 4]); break;
 300                         case ATA_100:
 301                         case ATA_133a:  p += sprintf(p, cycle_time[reg11 & 0x0F]); break;
 302                         default:        p += sprintf(p, "?"); break;
 303                 }
 304                 p += sprintf(p, "\n");
 305         }
 306
 307
 308         if (chipset_family < ATA_133) { /* else case TODO */
 309
 310 /* Data Active */
 311                 p += sprintf(p, "                Data Active Time   ");
 312                 switch(chipset_family) {
 313                         case ATA_16: /* confirmed */
 314                         case ATA_33:
 315                         case ATA_66:
 316                         case ATA_100a: p += sprintf(p, active_time[reg01 & 0x07]); break;
 317                         case ATA_100:
 318                         case ATA_133a: p += sprintf(p, active_time[(reg00 & 0x70) >> 4]); break;
 319                         default: p += sprintf(p, "?"); break;
 320                 }
 321                 p += sprintf(p, " \t Data Active Time   ");
 322                 switch(chipset_family) {
 323                         case ATA_16:
 324                         case ATA_33:
 325                         case ATA_66:
 326                         case ATA_100a: p += sprintf(p, active_time[reg11 & 0x07]); break;
 327                         case ATA_100:
 328                         case ATA_133a: p += sprintf(p, active_time[(reg10 & 0x70) >> 4]); break;
 329                         default: p += sprintf(p, "?"); break;
 330                 }
 331                 p += sprintf(p, "\n");
 332
 333 /* Data Recovery */
 334         /* warning: may need (reg&0x07) for pre ATA66 chips */
 335                 p += sprintf(p, "                Data Recovery Time %s \t Data Recovery Time %s\n",
 336                              recovery_time[reg00 & 0x0f], recovery_time[reg10 & 0x0f]);
 337         }
 338
 339         return p;
 340 }
 341
 342 static char* get_masters_info(char* buffer)
 343 {
 344         return get_drives_info(buffer, 0);
 345 }
 346
 347 static char* get_slaves_info(char* buffer)
 348 {
 349         return get_drives_info(buffer, 1);
 350 }
 351
 352 /* Main get_info, called on /proc/ide/sis reads */
 353 static int sis_get_info (char *buffer, char **addr, off_t offset, int count)
 354 {
 355         char *p = buffer;
 356         int len;
 357         u8 reg;
 358         u16 reg2, reg3;
 359
 360         p += sprintf(p, "\nSiS 5513 ");
 361         switch(chipset_family) {
 362                 case ATA_16: p += sprintf(p, "DMA 16"); break;
 363                 case ATA_33: p += sprintf(p, "Ultra 33"); break;
 364                 case ATA_66: p += sprintf(p, "Ultra 66"); break;
 365                 case ATA_100a:
 366                 case ATA_100: p += sprintf(p, "Ultra 100"); break;
 367                 case ATA_133a:
 368                 case ATA_133: p += sprintf(p, "Ultra 133"); break;
 369                 default: p+= sprintf(p, "Unknown???"); break;
 370         }
 371         p += sprintf(p, " chipset\n");
 372         p += sprintf(p, "--------------- Primary Channel "
 373                      "---------------- Secondary Channel "
 374                      "-------------\n");
 375
 376 /* Status */
 377         pci_read_config_byte(bmide_dev, 0x4a, &reg);
 378         if (chipset_family == ATA_133) {
 379                 pci_read_config_word(bmide_dev, 0x50, &reg2);
 380                 pci_read_config_word(bmide_dev, 0x52, &reg3);
 381         }
 382         p += sprintf(p, "Channel Status: ");
 383         if (chipset_family < ATA_66) {
 384                 p += sprintf(p, "%s \t \t \t \t %s\n",
 385                              (reg & 0x04) ? "On" : "Off",
 386                              (reg & 0x02) ? "On" : "Off");
 387         } else if (chipset_family < ATA_133) {
 388                 p += sprintf(p, "%s \t \t \t \t %s \n",
 389                              (reg & 0x02) ? "On" : "Off",
 390                              (reg & 0x04) ? "On" : "Off");
 391         } else { /* ATA_133 */
 392                 p += sprintf(p, "%s \t \t \t \t %s \n",
 393                              (reg2 & 0x02) ? "On" : "Off",
 394                              (reg3 & 0x02) ? "On" : "Off");
 395         }
 396
 397 /* Operation Mode */
 398         pci_read_config_byte(bmide_dev, 0x09, &reg);
 399         p += sprintf(p, "Operation Mode: %s \t \t \t %s \n",
 400                      (reg & 0x01) ? "Native" : "Compatible",
 401                      (reg & 0x04) ? "Native" : "Compatible");
 402
 403 /* 80-pin cable ? */
 404         if (chipset_family >= ATA_133) {
 405                 p += sprintf(p, "Cable Type:     %s \t \t \t %s\n",
 406                              (reg2 & 0x01) ? cable_type[1] : cable_type[0],
 407                              (reg3 & 0x01) ? cable_type[1] : cable_type[0]);
 408         } else if (chipset_family > ATA_33) {
 409                 pci_read_config_byte(bmide_dev, 0x48, &reg);
 410                 p += sprintf(p, "Cable Type:     %s \t \t \t %s\n",
 411                              (reg & 0x10) ? cable_type[1] : cable_type[0],
 412                              (reg & 0x20) ? cable_type[1] : cable_type[0]);
 413         }
 414
 415 /* Prefetch Count */
 416         if (chipset_family < ATA_133) {
 417                 pci_read_config_word(bmide_dev, 0x4c, &reg2);
 418                 pci_read_config_word(bmide_dev, 0x4e, &reg3);
 419                 p += sprintf(p, "Prefetch Count: %d \t \t \t \t %d\n",
 420                              reg2, reg3);
 421         }
 422
 423         p = get_masters_info(p);
 424         p = get_slaves_info(p);
 425
 426         len = (p - buffer) - offset;
 427         *addr = buffer + offset;
 428
 429         return len > count ? count : len;
 430 }
 431 #endif /* defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_IDE_PROC_FS) */
 432
 433 /*
 434  * Configuration functions
 435  */
 436 /* Enables per-drive prefetch and postwrite */
 437 static void config_drive_art_rwp (ide_drive_t *drive)
 438 {
 439         ide_hwif_t *hwif        = HWIF(drive);
 440         struct pci_dev *dev     = hwif->pci_dev;
 441
 442         u8 reg4bh               = 0;
 443         u8 rw_prefetch          = (0x11 << drive->dn);
 444
 445         if (drive->media != ide_disk)
 446                 return;
 447         pci_read_config_byte(dev, 0x4b, &reg4bh);
 448
 449         if ((reg4bh & rw_prefetch) != rw_prefetch)
 450                 pci_write_config_byte(dev, 0x4b, reg4bh|rw_prefetch);
 451 }
 452
 453 /* Set per-drive active and recovery time */
 454 static void config_art_rwp_pio (ide_drive_t *drive, u8 pio)
 455 {
 456         ide_hwif_t *hwif        = HWIF(drive);
 457         struct pci_dev *dev     = hwif->pci_dev;
 458
 459         u8 drive_pci, test1, test2;
 460
 461         config_drive_art_rwp(drive);
 462
 463         /* In pre ATA_133 case, drives sit at 0x40 + 4*drive->dn */
 464         drive_pci = 0x40;
 465         /* In SiS962 case drives sit at (0x40 or 0x70) + 8*drive->dn) */
 466         if (chipset_family >= ATA_133) {
 467                 u32 reg54h;
 468                 pci_read_config_dword(dev, 0x54, &reg54h);
 469                 if (reg54h & 0x40000000) drive_pci = 0x70;
 470                 drive_pci += ((drive->dn)*0x4);
 471         } else {
 472                 drive_pci += ((drive->dn)*0x2);
 473         }
 474
 475         /* register layout changed with newer ATA100 chips */
 476         if (chipset_family < ATA_100) {
 477                 pci_read_config_byte(dev, drive_pci, &test1);
 478                 pci_read_config_byte(dev, drive_pci+1, &test2);
 479
 480                 /* Clear active and recovery timings */
 481                 test1 &= ~0x0F;
 482                 test2 &= ~0x07;
 483
 484                 switch(pio) {
 485                         case 4:         test1 |= 0x01; test2 |= 0x03; break;
 486                         case 3:         test1 |= 0x03; test2 |= 0x03; break;
 487                         case 2:         test1 |= 0x04; test2 |= 0x04; break;
 488                         case 1:         test1 |= 0x07; test2 |= 0x06; break;
 489                         case 0:         /* PIO0: register setting == X000 */
 490                         default:        break;
 491                 }
 492                 pci_write_config_byte(dev, drive_pci, test1);
 493                 pci_write_config_byte(dev, drive_pci+1, test2);
 494         } else if (chipset_family < ATA_133) {
 495                 switch(pio) { /*                active  recovery
 496                                                   v     v */
 497                         case 4:         test1 = 0x30|0x01; break;
 498                         case 3:         test1 = 0x30|0x03; break;
 499                         case 2:         test1 = 0x40|0x04; break;
 500                         case 1:         test1 = 0x60|0x07; break;
 501                         case 0:         test1 = 0x00; break;
 502                         default:        break;
 503                 }
 504                 pci_write_config_byte(dev, drive_pci, test1);
 505         } else { /* ATA_133 */
 506                 u32 test3;
 507                 pci_read_config_dword(dev, drive_pci, &test3);
 508                 test3 &= 0xc0c00fff;
 509                 if (test3 & 0x08) {
 510                         test3 |= ini_time_value[ATA_133][pio] << 12;
 511                         test3 |= act_time_value[ATA_133][pio] << 16;
 512                         test3 |= rco_time_value[ATA_133][pio] << 24;
 513                 } else {
 514                         test3 |= ini_time_value[ATA_100][pio] << 12;
 515                         test3 |= act_time_value[ATA_100][pio] << 16;
 516                         test3 |= rco_time_value[ATA_100][pio] << 24;
 517                 }
 518                 pci_write_config_dword(dev, drive_pci, test3);
 519         }
 520 }
 521
 522 static int sis5513_tune_drive(ide_drive_t *drive, u8 pio)
 523 {
 524         pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
 525         config_art_rwp_pio(drive, pio);
 526         return ide_config_drive_speed(drive, XFER_PIO_0 + pio);
 527 }
 528
 529 static void sis5513_tuneproc(ide_drive_t *drive, u8 pio)
 530 {
 531         (void)sis5513_tune_drive(drive, pio);
 532 }
 533
 534 static int sis5513_tune_chipset (ide_drive_t *drive, u8 xferspeed)
 535 {
 536         ide_hwif_t *hwif        = HWIF(drive);
 537         struct pci_dev *dev     = hwif->pci_dev;
 538
 539         u8 drive_pci, reg, speed;
 540         u32 regdw;
 541
 542         speed = ide_rate_filter(drive, xferspeed);
 543
 544         /* See config_art_rwp_pio for drive pci config registers */
 545         drive_pci = 0x40;
 546         if (chipset_family >= ATA_133) {
 547                 u32 reg54h;
 548                 pci_read_config_dword(dev, 0x54, &reg54h);
 549                 if (reg54h & 0x40000000) drive_pci = 0x70;
 550                 drive_pci += ((drive->dn)*0x4);
 551                 pci_read_config_dword(dev, (unsigned long)drive_pci, &regdw);
 552                 /* Disable UDMA bit for non UDMA modes on UDMA chips */
 553                 if (speed < XFER_UDMA_0) {
 554                         regdw &= 0xfffffffb;
 555                         pci_write_config_dword(dev, (unsigned long)drive_pci, regdw);
 556                 }
 557
 558         } else {
 559                 drive_pci += ((drive->dn)*0x2);
 560                 pci_read_config_byte(dev, drive_pci+1, &reg);
 561                 /* Disable UDMA bit for non UDMA modes on UDMA chips */
 562                 if ((speed < XFER_UDMA_0) && (chipset_family > ATA_16)) {
 563                         reg &= 0x7F;
 564                         pci_write_config_byte(dev, drive_pci+1, reg);
 565                 }
 566         }
 567
 568         /* Config chip for mode */
 569         switch(speed) {
 570                 case XFER_UDMA_6:
 571                 case XFER_UDMA_5:
 572                 case XFER_UDMA_4:
 573                 case XFER_UDMA_3:
 574                 case XFER_UDMA_2:
 575                 case XFER_UDMA_1:
 576                 case XFER_UDMA_0:
 577                         if (chipset_family >= ATA_133) {
 578                                 regdw |= 0x04;
 579                                 regdw &= 0xfffff00f;
 580                                 /* check if ATA133 enable */
 581                                 if (regdw & 0x08) {
 582                                         regdw |= (unsigned long)cycle_time_value[ATA_133][speed-XFER_UDMA_0] << 4;
 583                                         regdw |= (unsigned long)cvs_time_value[ATA_133][speed-XFER_UDMA_0] << 8;
 584                                 } else {
 585                                 /* if ATA133 disable, we should not set speed above UDMA5 */
 586                                         if (speed > XFER_UDMA_5)
 587                                                 speed = XFER_UDMA_5;
 588                                         regdw |= (unsigned long)cycle_time_value[ATA_100][speed-XFER_UDMA_0] << 4;
 589                                         regdw |= (unsigned long)cvs_time_value[ATA_100][speed-XFER_UDMA_0] << 8;
 590                                 }
 591                                 pci_write_config_dword(dev, (unsigned long)drive_pci, regdw);
 592                         } else {
 593                                 /* Force the UDMA bit on if we want to use UDMA */
 594                                 reg |= 0x80;
 595                                 /* clean reg cycle time bits */
 596                                 reg &= ~((0xFF >> (8 - cycle_time_range[chipset_family]))
 597                                          << cycle_time_offset[chipset_family]);
 598                                 /* set reg cycle time bits */
 599                                 reg |= cycle_time_value[chipset_family][speed-XFER_UDMA_0]
 600                                         << cycle_time_offset[chipset_family];
 601                                 pci_write_config_byte(dev, drive_pci+1, reg);
 602                         }
 603                         break;
 604                 case XFER_MW_DMA_2:
 605                 case XFER_MW_DMA_1:
 606                 case XFER_MW_DMA_0:
 607                 case XFER_SW_DMA_2:
 608                 case XFER_SW_DMA_1:
 609                 case XFER_SW_DMA_0:
 610                         break;
 611                 case XFER_PIO_4:
 612                 case XFER_PIO_3:
 613                 case XFER_PIO_2:
 614                 case XFER_PIO_1:
 615                 case XFER_PIO_0:
 616                         return sis5513_tune_drive(drive, speed - XFER_PIO_0);
 617                 default:
 618                         BUG();
 619                         break;
 620         }
 621
 622         return ide_config_drive_speed(drive, speed);
 623 }
 624
 625 static int sis5513_config_xfer_rate(ide_drive_t *drive)
 626 {
 627         /*
 628          * TODO: always set PIO mode and remove this
 629          */
 630         sis5513_tuneproc(drive, 255);
 631
 632         drive->init_speed = 0;
 633
 634         if (ide_tune_dma(drive))
 635                 return 0;
 636
 637         if (ide_use_fast_pio(drive))
 638                 sis5513_tuneproc(drive, 255);
 639
 640         return -1;
 641 }
 642
 643 /* Chip detection and general config */
 644 static unsigned int __devinit init_chipset_sis5513 (struct pci_dev *dev, const char *name)
 645 {
 646         struct pci_dev *host;
 647         int i = 0;
 648
 649         chipset_family = 0;
 650
 651         for (i = 0; i < ARRAY_SIZE(SiSHostChipInfo) && !chipset_family; i++) {
 652
 653                 host = pci_get_device(PCI_VENDOR_ID_SI, SiSHostChipInfo[i].host_id, NULL);
 654
 655                 if (!host)
 656                         continue;
 657
 658                 chipset_family = SiSHostChipInfo[i].chipset_family;
 659
 660                 /* Special case for SiS630 : 630S/ET is ATA_100a */
 661                 if (SiSHostChipInfo[i].host_id == PCI_DEVICE_ID_SI_630) {
 662                         u8 hostrev;
 663                         pci_read_config_byte(host, PCI_REVISION_ID, &hostrev);
 664                         if (hostrev >= 0x30)
 665                                 chipset_family = ATA_100a;
 666                 }
 667                 pci_dev_put(host);
 668
 669                 printk(KERN_INFO "SIS5513: %s %s controller\n",
 670                          SiSHostChipInfo[i].name, chipset_capability[chipset_family]);
 671         }
 672
 673         if (!chipset_family) { /* Belongs to pci-quirks */
 674
 675                         u32 idemisc;
 676                         u16 trueid;
 677
 678                         /* Disable ID masking and register remapping */
 679                         pci_read_config_dword(dev, 0x54, &idemisc);
 680                         pci_write_config_dword(dev, 0x54, (idemisc & 0x7fffffff));
 681                         pci_read_config_word(dev, PCI_DEVICE_ID, &trueid);
 682                         pci_write_config_dword(dev, 0x54, idemisc);
 683
 684                         if (trueid == 0x5518) {
 685                                 printk(KERN_INFO "SIS5513: SiS 962/963 MuTIOL IDE UDMA133 controller\n");
 686                                 chipset_family = ATA_133;
 687
 688                                 /* Check for 5513 compability mapping
 689                                  * We must use this, else the port enabled code will fail,
 690                                  * as it expects the enablebits at 0x4a.
 691                                  */
 692                                 if ((idemisc & 0x40000000) == 0) {
 693                                         pci_write_config_dword(dev, 0x54, idemisc | 0x40000000);
 694                                         printk(KERN_INFO "SIS5513: Switching to 5513 register mapping\n");
 695                                 }
 696                         }
 697         }
 698
 699         if (!chipset_family) { /* Belongs to pci-quirks */
 700
 701                         struct pci_dev *lpc_bridge;
 702                         u16 trueid;
 703                         u8 prefctl;
 704                         u8 idecfg;
 705                         u8 sbrev;
 706
 707                         pci_read_config_byte(dev, 0x4a, &idecfg);
 708                         pci_write_config_byte(dev, 0x4a, idecfg | 0x10);
 709                         pci_read_config_word(dev, PCI_DEVICE_ID, &trueid);
 710                         pci_write_config_byte(dev, 0x4a, idecfg);
 711
 712                         if (trueid == 0x5517) { /* SiS 961/961B */
 713
 714                                 lpc_bridge = pci_get_slot(dev->bus, 0x10); /* Bus 0, Dev 2, Fn 0 */
 715                                 pci_read_config_byte(lpc_bridge, PCI_REVISION_ID, &sbrev);
 716                                 pci_read_config_byte(dev, 0x49, &prefctl);
 717                                 pci_dev_put(lpc_bridge);
 718
 719                                 if (sbrev == 0x10 && (prefctl & 0x80)) {
 720                                         printk(KERN_INFO "SIS5513: SiS 961B MuTIOL IDE UDMA133 controller\n");
 721                                         chipset_family = ATA_133a;
 722                                 } else {
 723                                         printk(KERN_INFO "SIS5513: SiS 961 MuTIOL IDE UDMA100 controller\n");
 724                                         chipset_family = ATA_100;
 725                                 }
 726                         }
 727         }
 728
 729         if (!chipset_family)
 730                 return -1;
 731
 732         /* Make general config ops here
 733            1/ tell IDE channels to operate in Compatibility mode only
 734            2/ tell old chips to allow per drive IDE timings */
 735
 736         {
 737                 u8 reg;
 738                 u16 regw;
 739
 740                 switch(chipset_family) {
 741                         case ATA_133:
 742                                 /* SiS962 operation mode */
 743                                 pci_read_config_word(dev, 0x50, &regw);
 744                                 if (regw & 0x08)
 745                                         pci_write_config_word(dev, 0x50, regw&0xfff7);
 746                                 pci_read_config_word(dev, 0x52, &regw);
 747                                 if (regw & 0x08)
 748                                         pci_write_config_word(dev, 0x52, regw&0xfff7);
 749                                 break;
 750                         case ATA_133a:
 751                         case ATA_100:
 752                                 /* Fixup latency */
 753                                 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x80);
 754                                 /* Set compatibility bit */
 755                                 pci_read_config_byte(dev, 0x49, &reg);
 756                                 if (!(reg & 0x01)) {
 757                                         pci_write_config_byte(dev, 0x49, reg|0x01);
 758                                 }
 759                                 break;
 760                         case ATA_100a:
 761                         case ATA_66:
 762                                 /* Fixup latency */
 763                                 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x10);
 764
 765                                 /* On ATA_66 chips the bit was elsewhere */
 766                                 pci_read_config_byte(dev, 0x52, &reg);
 767                                 if (!(reg & 0x04)) {
 768                                         pci_write_config_byte(dev, 0x52, reg|0x04);
 769                                 }
 770                                 break;
 771                         case ATA_33:
 772                                 /* On ATA_33 we didn't have a single bit to set */
 773                                 pci_read_config_byte(dev, 0x09, &reg);
 774                                 if ((reg & 0x0f) != 0x00) {
 775                                         pci_write_config_byte(dev, 0x09, reg&0xf0);
 776                                 }
 777                         case ATA_16:
 778                                 /* force per drive recovery and active timings
 779                                    needed on ATA_33 and below chips */
 780                                 pci_read_config_byte(dev, 0x52, &reg);
 781                                 if (!(reg & 0x08)) {
 782                                         pci_write_config_byte(dev, 0x52, reg|0x08);
 783                                 }
 784                                 break;
 785                 }
 786
 787 #if defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_IDE_PROC_FS)
 788                 if (!sis_proc) {
 789                         sis_proc = 1;
 790                         bmide_dev = dev;
 791                         ide_pci_create_host_proc("sis", sis_get_info);
 792                 }
 793 #endif
 794         }
 795
 796         return 0;
 797 }
 798
 799 static unsigned int __devinit ata66_sis5513 (ide_hwif_t *hwif)
 800 {
 801         u8 ata66 = 0;
 802
 803         if (chipset_family >= ATA_133) {
 804                 u16 regw = 0;
 805                 u16 reg_addr = hwif->channel ? 0x52: 0x50;
 806                 pci_read_config_word(hwif->pci_dev, reg_addr, &regw);
 807                 ata66 = (regw & 0x8000) ? 0 : 1;
 808         } else if (chipset_family >= ATA_66) {
 809                 u8 reg48h = 0;
 810                 u8 mask = hwif->channel ? 0x20 : 0x10;
 811                 pci_read_config_byte(hwif->pci_dev, 0x48, &reg48h);
 812                 ata66 = (reg48h & mask) ? 0 : 1;
 813         }
 814         return ata66;
 815 }
 816
 817 static void __devinit init_hwif_sis5513 (ide_hwif_t *hwif)
 818 {
 819         u8 udma_rates[] = { 0x00, 0x00, 0x07, 0x1f, 0x3f, 0x3f, 0x7f, 0x7f };
 820
 821         hwif->autodma = 0;
 822
 823         if (!hwif->irq)
 824                 hwif->irq = hwif->channel ? 15 : 14;
 825
 826         hwif->tuneproc = &sis5513_tuneproc;
 827         hwif->speedproc = &sis5513_tune_chipset;
 828
 829         if (!(hwif->dma_base)) {
 830                 hwif->drives[0].autotune = 1;
 831                 hwif->drives[1].autotune = 1;
 832                 return;
 833         }
 834
 835         hwif->atapi_dma = 1;
 836
 837         hwif->ultra_mask = udma_rates[chipset_family];
 838         hwif->mwdma_mask = 0x07;
 839         hwif->swdma_mask = 0x07;
 840
 841         if (!chipset_family)
 842                 return;
 843
 844         if (!(hwif->udma_four))
 845                 hwif->udma_four = ata66_sis5513(hwif);
 846
 847         if (chipset_family > ATA_16) {
 848                 hwif->ide_dma_check = &sis5513_config_xfer_rate;
 849                 if (!noautodma)
 850                         hwif->autodma = 1;
 851         }
 852         hwif->drives[0].autodma = hwif->autodma;
 853         hwif->drives[1].autodma = hwif->autodma;
 854         return;
 855 }
 856
 857 static ide_pci_device_t sis5513_chipset __devinitdata = {
 858         .name           = "SIS5513",
 859         .init_chipset   = init_chipset_sis5513,
 860         .init_hwif      = init_hwif_sis5513,
 861         .channels       = 2,
 862         .autodma        = NOAUTODMA,
 863         .enablebits     = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
 864         .bootable       = ON_BOARD,
 865 };
 866
 867 static int __devinit sis5513_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 868 {
 869         return ide_setup_pci_device(dev, &sis5513_chipset);
 870 }
 871
 872 static struct pci_device_id sis5513_pci_tbl[] = {
 873         { PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5513, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
 874         { PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5518, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
 875         { 0, },
 876 };
 877 MODULE_DEVICE_TABLE(pci, sis5513_pci_tbl);
 878
 879 static struct pci_driver driver = {
 880         .name           = "SIS_IDE",
 881         .id_table       = sis5513_pci_tbl,
 882         .probe          = sis5513_init_one,
 883 };
 884
 885 static int __init sis5513_ide_init(void)
 886 {
 887         return ide_pci_register_driver(&driver);
 888 }
 889
 890 module_init(sis5513_ide_init);
 891
 892 MODULE_AUTHOR("Lionel Bouton, L C Chang, Andre Hedrick, Vojtech Pavlik");
 893 MODULE_DESCRIPTION("PCI driver module for SIS IDE");
 894 MODULE_LICENSE("GPL");
 895
 896 /*
 897  * TODO:
 898  *      - CLEANUP
 899  *      - Use drivers/ide/ide-timing.h !
 900  *      - More checks in the config registers (force values instead of
 901  *        relying on the BIOS setting them correctly).
 902  *      - Further optimisations ?
 903  *        . for example ATA66+ regs 0x48 & 0x4A
 904  */