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   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/types.h>
  48 #include <linux/module.h>
  49 #include <linux/kernel.h>
  50 #include <linux/delay.h>
  51 #include <linux/timer.h>
  52 #include <linux/mm.h>
  53 #include <linux/ioport.h>
  54 #include <linux/blkdev.h>
  55 #include <linux/hdreg.h>
  56
  57 #include <linux/interrupt.h>
  58 #include <linux/pci.h>
  59 #include <linux/init.h>
  60 #include <linux/ide.h>
  61
  62 #include <asm/irq.h>
  63
  64 #include "ide-timing.h"
  65
  66 #define DISPLAY_SIS_TIMINGS
  67
  68 /* registers layout and init values are chipset family dependant */
  69
  70 #define ATA_16          0x01
  71 #define ATA_33          0x02
  72 #define ATA_66          0x03
  73 #define ATA_100a        0x04 // SiS730/SiS550 is ATA100 with ATA66 layout
  74 #define ATA_100         0x05
  75 #define ATA_133a        0x06 // SiS961b with 133 support
  76 #define ATA_133         0x07 // SiS962/963
  77
  78 static u8 chipset_family;
  79
  80 /*
  81  * Devices supported
  82  */
  83 static const struct {
  84         const char *name;
  85         u16 host_id;
  86         u8 chipset_family;
  87         u8 flags;
  88 } SiSHostChipInfo[] = {
  89         { "SiS968",     PCI_DEVICE_ID_SI_968,   ATA_133  },
  90         { "SiS966",     PCI_DEVICE_ID_SI_966,   ATA_133  },
  91         { "SiS965",     PCI_DEVICE_ID_SI_965,   ATA_133  },
  92         { "SiS745",     PCI_DEVICE_ID_SI_745,   ATA_100  },
  93         { "SiS735",     PCI_DEVICE_ID_SI_735,   ATA_100  },
  94         { "SiS733",     PCI_DEVICE_ID_SI_733,   ATA_100  },
  95         { "SiS635",     PCI_DEVICE_ID_SI_635,   ATA_100  },
  96         { "SiS633",     PCI_DEVICE_ID_SI_633,   ATA_100  },
  97
  98         { "SiS730",     PCI_DEVICE_ID_SI_730,   ATA_100a },
  99         { "SiS550",     PCI_DEVICE_ID_SI_550,   ATA_100a },
 100
 101         { "SiS640",     PCI_DEVICE_ID_SI_640,   ATA_66   },
 102         { "SiS630",     PCI_DEVICE_ID_SI_630,   ATA_66   },
 103         { "SiS620",     PCI_DEVICE_ID_SI_620,   ATA_66   },
 104         { "SiS540",     PCI_DEVICE_ID_SI_540,   ATA_66   },
 105         { "SiS530",     PCI_DEVICE_ID_SI_530,   ATA_66   },
 106
 107         { "SiS5600",    PCI_DEVICE_ID_SI_5600,  ATA_33   },
 108         { "SiS5598",    PCI_DEVICE_ID_SI_5598,  ATA_33   },
 109         { "SiS5597",    PCI_DEVICE_ID_SI_5597,  ATA_33   },
 110         { "SiS5591/2",  PCI_DEVICE_ID_SI_5591,  ATA_33   },
 111         { "SiS5582",    PCI_DEVICE_ID_SI_5582,  ATA_33   },
 112         { "SiS5581",    PCI_DEVICE_ID_SI_5581,  ATA_33   },
 113
 114         { "SiS5596",    PCI_DEVICE_ID_SI_5596,  ATA_16   },
 115         { "SiS5571",    PCI_DEVICE_ID_SI_5571,  ATA_16   },
 116         { "SiS5517",    PCI_DEVICE_ID_SI_5517,  ATA_16   },
 117         { "SiS551x",    PCI_DEVICE_ID_SI_5511,  ATA_16   },
 118 };
 119
 120 /* Cycle time bits and values vary across chip dma capabilities
 121    These three arrays hold the register layout and the values to set.
 122    Indexed by chipset_family and (dma_mode - XFER_UDMA_0) */
 123
 124 /* {0, ATA_16, ATA_33, ATA_66, ATA_100a, ATA_100, ATA_133} */
 125 static u8 cycle_time_offset[] = {0,0,5,4,4,0,0};
 126 static u8 cycle_time_range[] = {0,0,2,3,3,4,4};
 127 static u8 cycle_time_value[][XFER_UDMA_6 - XFER_UDMA_0 + 1] = {
 128         {0,0,0,0,0,0,0}, /* no udma */
 129         {0,0,0,0,0,0,0}, /* no udma */
 130         {3,2,1,0,0,0,0}, /* ATA_33 */
 131         {7,5,3,2,1,0,0}, /* ATA_66 */
 132         {7,5,3,2,1,0,0}, /* ATA_100a (730 specific), differences are on cycle_time range and offset */
 133         {11,7,5,4,2,1,0}, /* ATA_100 */
 134         {15,10,7,5,3,2,1}, /* ATA_133a (earliest 691 southbridges) */
 135         {15,10,7,5,3,2,1}, /* ATA_133 */
 136 };
 137 /* CRC Valid Setup Time vary across IDE clock setting 33/66/100/133
 138    See SiS962 data sheet for more detail */
 139 static u8 cvs_time_value[][XFER_UDMA_6 - XFER_UDMA_0 + 1] = {
 140         {0,0,0,0,0,0,0}, /* no udma */
 141         {0,0,0,0,0,0,0}, /* no udma */
 142         {2,1,1,0,0,0,0},
 143         {4,3,2,1,0,0,0},
 144         {4,3,2,1,0,0,0},
 145         {6,4,3,1,1,1,0},
 146         {9,6,4,2,2,2,2},
 147         {9,6,4,2,2,2,2},
 148 };
 149 /* Initialize time, Active time, Recovery time vary across
 150    IDE clock settings. These 3 arrays hold the register value
 151    for PIO0/1/2/3/4 and DMA0/1/2 mode in order */
 152 static u8 ini_time_value[][8] = {
 153         {0,0,0,0,0,0,0,0},
 154         {0,0,0,0,0,0,0,0},
 155         {2,1,0,0,0,1,0,0},
 156         {4,3,1,1,1,3,1,1},
 157         {4,3,1,1,1,3,1,1},
 158         {6,4,2,2,2,4,2,2},
 159         {9,6,3,3,3,6,3,3},
 160         {9,6,3,3,3,6,3,3},
 161 };
 162 static u8 act_time_value[][8] = {
 163         {0,0,0,0,0,0,0,0},
 164         {0,0,0,0,0,0,0,0},
 165         {9,9,9,2,2,7,2,2},
 166         {19,19,19,5,4,14,5,4},
 167         {19,19,19,5,4,14,5,4},
 168         {28,28,28,7,6,21,7,6},
 169         {38,38,38,10,9,28,10,9},
 170         {38,38,38,10,9,28,10,9},
 171 };
 172 static u8 rco_time_value[][8] = {
 173         {0,0,0,0,0,0,0,0},
 174         {0,0,0,0,0,0,0,0},
 175         {9,2,0,2,0,7,1,1},
 176         {19,5,1,5,2,16,3,2},
 177         {19,5,1,5,2,16,3,2},
 178         {30,9,3,9,4,25,6,4},
 179         {40,12,4,12,5,34,12,5},
 180         {40,12,4,12,5,34,12,5},
 181 };
 182
 183 /*
 184  * Printing configuration
 185  */
 186 /* Used for chipset type printing at boot time */
 187 static char* chipset_capability[] = {
 188         "ATA", "ATA 16",
 189         "ATA 33", "ATA 66",
 190         "ATA 100 (1st gen)", "ATA 100 (2nd gen)",
 191         "ATA 133 (1st gen)", "ATA 133 (2nd gen)"
 192 };
 193
 194 #if defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS)
 195 #include <linux/stat.h>
 196 #include <linux/proc_fs.h>
 197
 198 static u8 sis_proc = 0;
 199
 200 static struct pci_dev *bmide_dev;
 201
 202 static char* cable_type[] = {
 203         "80 pins",
 204         "40 pins"
 205 };
 206
 207 static char* recovery_time[] ={
 208         "12 PCICLK", "1 PCICLK",
 209         "2 PCICLK", "3 PCICLK",
 210         "4 PCICLK", "5 PCICLCK",
 211         "6 PCICLK", "7 PCICLCK",
 212         "8 PCICLK", "9 PCICLCK",
 213         "10 PCICLK", "11 PCICLK",
 214         "13 PCICLK", "14 PCICLK",
 215         "15 PCICLK", "15 PCICLK"
 216 };
 217
 218 static char* active_time[] = {
 219         "8 PCICLK", "1 PCICLCK",
 220         "2 PCICLK", "3 PCICLK",
 221         "4 PCICLK", "5 PCICLK",
 222         "6 PCICLK", "12 PCICLK"
 223 };
 224
 225 static char* cycle_time[] = {
 226         "Reserved", "2 CLK",
 227         "3 CLK", "4 CLK",
 228         "5 CLK", "6 CLK",
 229         "7 CLK", "8 CLK",
 230         "9 CLK", "10 CLK",
 231         "11 CLK", "12 CLK",
 232         "13 CLK", "14 CLK",
 233         "15 CLK", "16 CLK"
 234 };
 235
 236 /* Generic add master or slave info function */
 237 static char* get_drives_info (char *buffer, u8 pos)
 238 {
 239         u8 reg00, reg01, reg10, reg11; /* timing registers */
 240         u32 regdw0, regdw1;
 241         char* p = buffer;
 242
 243 /* Postwrite/Prefetch */
 244         if (chipset_family < ATA_133) {
 245                 pci_read_config_byte(bmide_dev, 0x4b, &reg00);
 246                 p += sprintf(p, "Drive %d:        Postwrite %s \t \t Postwrite %s\n",
 247                              pos, (reg00 & (0x10 << pos)) ? "Enabled" : "Disabled",
 248                              (reg00 & (0x40 << pos)) ? "Enabled" : "Disabled");
 249                 p += sprintf(p, "                Prefetch  %s \t \t Prefetch  %s\n",
 250                              (reg00 & (0x01 << pos)) ? "Enabled" : "Disabled",
 251                              (reg00 & (0x04 << pos)) ? "Enabled" : "Disabled");
 252                 pci_read_config_byte(bmide_dev, 0x40+2*pos, &reg00);
 253                 pci_read_config_byte(bmide_dev, 0x41+2*pos, &reg01);
 254                 pci_read_config_byte(bmide_dev, 0x44+2*pos, &reg10);
 255                 pci_read_config_byte(bmide_dev, 0x45+2*pos, &reg11);
 256         } else {
 257                 u32 reg54h;
 258                 u8 drive_pci = 0x40;
 259                 pci_read_config_dword(bmide_dev, 0x54, &reg54h);
 260                 if (reg54h & 0x40000000) {
 261                         // Configuration space remapped to 0x70
 262                         drive_pci = 0x70;
 263                 }
 264                 pci_read_config_dword(bmide_dev, (unsigned long)drive_pci+4*pos, &regdw0);
 265                 pci_read_config_dword(bmide_dev, (unsigned long)drive_pci+4*pos+8, &regdw1);
 266
 267                 p += sprintf(p, "Drive %d:\n", pos);
 268         }
 269
 270
 271 /* UDMA */
 272         if (chipset_family >= ATA_133) {
 273                 p += sprintf(p, "                UDMA %s \t \t \t UDMA %s\n",
 274                              (regdw0 & 0x04) ? "Enabled" : "Disabled",
 275                              (regdw1 & 0x04) ? "Enabled" : "Disabled");
 276                 p += sprintf(p, "                UDMA Cycle Time    %s \t UDMA Cycle Time    %s\n",
 277                              cycle_time[(regdw0 & 0xF0) >> 4],
 278                              cycle_time[(regdw1 & 0xF0) >> 4]);
 279         } else if (chipset_family >= ATA_33) {
 280                 p += sprintf(p, "                UDMA %s \t \t \t UDMA %s\n",
 281                              (reg01 & 0x80) ? "Enabled" : "Disabled",
 282                              (reg11 & 0x80) ? "Enabled" : "Disabled");
 283
 284                 p += sprintf(p, "                UDMA Cycle Time    ");
 285                 switch(chipset_family) {
 286                         case ATA_33:    p += sprintf(p, cycle_time[(reg01 & 0x60) >> 5]); break;
 287                         case ATA_66:
 288                         case ATA_100a:  p += sprintf(p, cycle_time[(reg01 & 0x70) >> 4]); break;
 289                         case ATA_100:
 290                         case ATA_133a:  p += sprintf(p, cycle_time[reg01 & 0x0F]); break;
 291                         default:        p += sprintf(p, "?"); break;
 292                 }
 293                 p += sprintf(p, " \t UDMA Cycle Time    ");
 294                 switch(chipset_family) {
 295                         case ATA_33:    p += sprintf(p, cycle_time[(reg11 & 0x60) >> 5]); break;
 296                         case ATA_66:
 297                         case ATA_100a:  p += sprintf(p, cycle_time[(reg11 & 0x70) >> 4]); break;
 298                         case ATA_100:
 299                         case ATA_133a:  p += sprintf(p, cycle_time[reg11 & 0x0F]); break;
 300                         default:        p += sprintf(p, "?"); break;
 301                 }
 302                 p += sprintf(p, "\n");
 303         }
 304
 305
 306         if (chipset_family < ATA_133) { /* else case TODO */
 307
 308 /* Data Active */
 309                 p += sprintf(p, "                Data Active Time   ");
 310                 switch(chipset_family) {
 311                         case ATA_16: /* confirmed */
 312                         case ATA_33:
 313                         case ATA_66:
 314                         case ATA_100a: p += sprintf(p, active_time[reg01 & 0x07]); break;
 315                         case ATA_100:
 316                         case ATA_133a: p += sprintf(p, active_time[(reg00 & 0x70) >> 4]); break;
 317                         default: p += sprintf(p, "?"); break;
 318                 }
 319                 p += sprintf(p, " \t Data Active Time   ");
 320                 switch(chipset_family) {
 321                         case ATA_16:
 322                         case ATA_33:
 323                         case ATA_66:
 324                         case ATA_100a: p += sprintf(p, active_time[reg11 & 0x07]); break;
 325                         case ATA_100:
 326                         case ATA_133a: p += sprintf(p, active_time[(reg10 & 0x70) >> 4]); break;
 327                         default: p += sprintf(p, "?"); break;
 328                 }
 329                 p += sprintf(p, "\n");
 330
 331 /* Data Recovery */
 332         /* warning: may need (reg&0x07) for pre ATA66 chips */
 333                 p += sprintf(p, "                Data Recovery Time %s \t Data Recovery Time %s\n",
 334                              recovery_time[reg00 & 0x0f], recovery_time[reg10 & 0x0f]);
 335         }
 336
 337         return p;
 338 }
 339
 340 static char* get_masters_info(char* buffer)
 341 {
 342         return get_drives_info(buffer, 0);
 343 }
 344
 345 static char* get_slaves_info(char* buffer)
 346 {
 347         return get_drives_info(buffer, 1);
 348 }
 349
 350 /* Main get_info, called on /proc/ide/sis reads */
 351 static int sis_get_info (char *buffer, char **addr, off_t offset, int count)
 352 {
 353         char *p = buffer;
 354         int len;
 355         u8 reg;
 356         u16 reg2, reg3;
 357
 358         p += sprintf(p, "\nSiS 5513 ");
 359         switch(chipset_family) {
 360                 case ATA_16: p += sprintf(p, "DMA 16"); break;
 361                 case ATA_33: p += sprintf(p, "Ultra 33"); break;
 362                 case ATA_66: p += sprintf(p, "Ultra 66"); break;
 363                 case ATA_100a:
 364                 case ATA_100: p += sprintf(p, "Ultra 100"); break;
 365                 case ATA_133a:
 366                 case ATA_133: p += sprintf(p, "Ultra 133"); break;
 367                 default: p+= sprintf(p, "Unknown???"); break;
 368         }
 369         p += sprintf(p, " chipset\n");
 370         p += sprintf(p, "--------------- Primary Channel "
 371                      "---------------- Secondary Channel "
 372                      "-------------\n");
 373
 374 /* Status */
 375         pci_read_config_byte(bmide_dev, 0x4a, &reg);
 376         if (chipset_family == ATA_133) {
 377                 pci_read_config_word(bmide_dev, 0x50, &reg2);
 378                 pci_read_config_word(bmide_dev, 0x52, &reg3);
 379         }
 380         p += sprintf(p, "Channel Status: ");
 381         if (chipset_family < ATA_66) {
 382                 p += sprintf(p, "%s \t \t \t \t %s\n",
 383                              (reg & 0x04) ? "On" : "Off",
 384                              (reg & 0x02) ? "On" : "Off");
 385         } else if (chipset_family < ATA_133) {
 386                 p += sprintf(p, "%s \t \t \t \t %s \n",
 387                              (reg & 0x02) ? "On" : "Off",
 388                              (reg & 0x04) ? "On" : "Off");
 389         } else { /* ATA_133 */
 390                 p += sprintf(p, "%s \t \t \t \t %s \n",
 391                              (reg2 & 0x02) ? "On" : "Off",
 392                              (reg3 & 0x02) ? "On" : "Off");
 393         }
 394
 395 /* Operation Mode */
 396         pci_read_config_byte(bmide_dev, 0x09, &reg);
 397         p += sprintf(p, "Operation Mode: %s \t \t \t %s \n",
 398                      (reg & 0x01) ? "Native" : "Compatible",
 399                      (reg & 0x04) ? "Native" : "Compatible");
 400
 401 /* 80-pin cable ? */
 402         if (chipset_family >= ATA_133) {
 403                 p += sprintf(p, "Cable Type:     %s \t \t \t %s\n",
 404                              (reg2 & 0x01) ? cable_type[1] : cable_type[0],
 405                              (reg3 & 0x01) ? cable_type[1] : cable_type[0]);
 406         } else if (chipset_family > ATA_33) {
 407                 pci_read_config_byte(bmide_dev, 0x48, &reg);
 408                 p += sprintf(p, "Cable Type:     %s \t \t \t %s\n",
 409                              (reg & 0x10) ? cable_type[1] : cable_type[0],
 410                              (reg & 0x20) ? cable_type[1] : cable_type[0]);
 411         }
 412
 413 /* Prefetch Count */
 414         if (chipset_family < ATA_133) {
 415                 pci_read_config_word(bmide_dev, 0x4c, &reg2);
 416                 pci_read_config_word(bmide_dev, 0x4e, &reg3);
 417                 p += sprintf(p, "Prefetch Count: %d \t \t \t \t %d\n",
 418                              reg2, reg3);
 419         }
 420
 421         p = get_masters_info(p);
 422         p = get_slaves_info(p);
 423
 424         len = (p - buffer) - offset;
 425         *addr = buffer + offset;
 426
 427         return len > count ? count : len;
 428 }
 429 #endif /* defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS) */
 430
 431 static u8 sis5513_ratemask (ide_drive_t *drive)
 432 {
 433         u8 rates[] = { 0, 0, 1, 2, 3, 3, 4, 4 };
 434         u8 mode = rates[chipset_family];
 435
 436         if (!eighty_ninty_three(drive))
 437                 mode = min(mode, (u8)1);
 438         return mode;
 439 }
 440
 441 /*
 442  * Configuration functions
 443  */
 444 /* Enables per-drive prefetch and postwrite */
 445 static void config_drive_art_rwp (ide_drive_t *drive)
 446 {
 447         ide_hwif_t *hwif        = HWIF(drive);
 448         struct pci_dev *dev     = hwif->pci_dev;
 449
 450         u8 reg4bh               = 0;
 451         u8 rw_prefetch          = (0x11 << drive->dn);
 452
 453         if (drive->media != ide_disk)
 454                 return;
 455         pci_read_config_byte(dev, 0x4b, &reg4bh);
 456
 457         if ((reg4bh & rw_prefetch) != rw_prefetch)
 458                 pci_write_config_byte(dev, 0x4b, reg4bh|rw_prefetch);
 459 }
 460
 461
 462 /* Set per-drive active and recovery time */
 463 static void config_art_rwp_pio (ide_drive_t *drive, u8 pio)
 464 {
 465         ide_hwif_t *hwif        = HWIF(drive);
 466         struct pci_dev *dev     = hwif->pci_dev;
 467
 468         u8                      timing, drive_pci, test1, test2;
 469
 470         u16 eide_pio_timing[6] = {600, 390, 240, 180, 120, 90};
 471         u16 xfer_pio = drive->id->eide_pio_modes;
 472
 473         config_drive_art_rwp(drive);
 474         pio = ide_get_best_pio_mode(drive, 255, pio, NULL);
 475
 476         if (xfer_pio> 4)
 477                 xfer_pio = 0;
 478
 479         if (drive->id->eide_pio_iordy > 0) {
 480                 for (xfer_pio = 5;
 481                         (xfer_pio > 0) &&
 482                         (drive->id->eide_pio_iordy > eide_pio_timing[xfer_pio]);
 483                         xfer_pio--);
 484         } else {
 485                 xfer_pio = (drive->id->eide_pio_modes & 4) ? 0x05 :
 486                            (drive->id->eide_pio_modes & 2) ? 0x04 :
 487                            (drive->id->eide_pio_modes & 1) ? 0x03 : xfer_pio;
 488         }
 489
 490         timing = (xfer_pio >= pio) ? xfer_pio : pio;
 491
 492         /* In pre ATA_133 case, drives sit at 0x40 + 4*drive->dn */
 493         drive_pci = 0x40;
 494         /* In SiS962 case drives sit at (0x40 or 0x70) + 8*drive->dn) */
 495         if (chipset_family >= ATA_133) {
 496                 u32 reg54h;
 497                 pci_read_config_dword(dev, 0x54, &reg54h);
 498                 if (reg54h & 0x40000000) drive_pci = 0x70;
 499                 drive_pci += ((drive->dn)*0x4);
 500         } else {
 501                 drive_pci += ((drive->dn)*0x2);
 502         }
 503
 504         /* register layout changed with newer ATA100 chips */
 505         if (chipset_family < ATA_100) {
 506                 pci_read_config_byte(dev, drive_pci, &test1);
 507                 pci_read_config_byte(dev, drive_pci+1, &test2);
 508
 509                 /* Clear active and recovery timings */
 510                 test1 &= ~0x0F;
 511                 test2 &= ~0x07;
 512
 513                 switch(timing) {
 514                         case 4:         test1 |= 0x01; test2 |= 0x03; break;
 515                         case 3:         test1 |= 0x03; test2 |= 0x03; break;
 516                         case 2:         test1 |= 0x04; test2 |= 0x04; break;
 517                         case 1:         test1 |= 0x07; test2 |= 0x06; break;
 518                         default:        break;
 519                 }
 520                 pci_write_config_byte(dev, drive_pci, test1);
 521                 pci_write_config_byte(dev, drive_pci+1, test2);
 522         } else if (chipset_family < ATA_133) {
 523                 switch(timing) { /*             active  recovery
 524                                                   v     v */
 525                         case 4:         test1 = 0x30|0x01; break;
 526                         case 3:         test1 = 0x30|0x03; break;
 527                         case 2:         test1 = 0x40|0x04; break;
 528                         case 1:         test1 = 0x60|0x07; break;
 529                         case 0:         test1 = 0x00; break;
 530                         default:        break;
 531                 }
 532                 pci_write_config_byte(dev, drive_pci, test1);
 533         } else { /* ATA_133 */
 534                 u32 test3;
 535                 pci_read_config_dword(dev, drive_pci, &test3);
 536                 test3 &= 0xc0c00fff;
 537                 if (test3 & 0x08) {
 538                         test3 |= (unsigned long)ini_time_value[ATA_133][timing] << 12;
 539                         test3 |= (unsigned long)act_time_value[ATA_133][timing] << 16;
 540                         test3 |= (unsigned long)rco_time_value[ATA_133][timing] << 24;
 541                 } else {
 542                         test3 |= (unsigned long)ini_time_value[ATA_100][timing] << 12;
 543                         test3 |= (unsigned long)act_time_value[ATA_100][timing] << 16;
 544                         test3 |= (unsigned long)rco_time_value[ATA_100][timing] << 24;
 545                 }
 546                 pci_write_config_dword(dev, drive_pci, test3);
 547         }
 548 }
 549
 550 static int config_chipset_for_pio (ide_drive_t *drive, u8 pio)
 551 {
 552         if (pio == 255)
 553                 pio = ide_find_best_mode(drive, XFER_PIO | XFER_EPIO) - XFER_PIO_0;
 554         config_art_rwp_pio(drive, pio);
 555         return ide_config_drive_speed(drive, XFER_PIO_0 + min_t(u8, pio, 4));
 556 }
 557
 558 static int sis5513_tune_chipset (ide_drive_t *drive, u8 xferspeed)
 559 {
 560         ide_hwif_t *hwif        = HWIF(drive);
 561         struct pci_dev *dev     = hwif->pci_dev;
 562
 563         u8 drive_pci, reg, speed;
 564         u32 regdw;
 565
 566         speed = ide_rate_filter(sis5513_ratemask(drive), xferspeed);
 567
 568         /* See config_art_rwp_pio for drive pci config registers */
 569         drive_pci = 0x40;
 570         if (chipset_family >= ATA_133) {
 571                 u32 reg54h;
 572                 pci_read_config_dword(dev, 0x54, &reg54h);
 573                 if (reg54h & 0x40000000) drive_pci = 0x70;
 574                 drive_pci += ((drive->dn)*0x4);
 575                 pci_read_config_dword(dev, (unsigned long)drive_pci, &regdw);
 576                 /* Disable UDMA bit for non UDMA modes on UDMA chips */
 577                 if (speed < XFER_UDMA_0) {
 578                         regdw &= 0xfffffffb;
 579                         pci_write_config_dword(dev, (unsigned long)drive_pci, regdw);
 580                 }
 581
 582         } else {
 583                 drive_pci += ((drive->dn)*0x2);
 584                 pci_read_config_byte(dev, drive_pci+1, &reg);
 585                 /* Disable UDMA bit for non UDMA modes on UDMA chips */
 586                 if ((speed < XFER_UDMA_0) && (chipset_family > ATA_16)) {
 587                         reg &= 0x7F;
 588                         pci_write_config_byte(dev, drive_pci+1, reg);
 589                 }
 590         }
 591
 592         /* Config chip for mode */
 593         switch(speed) {
 594                 case XFER_UDMA_6:
 595                 case XFER_UDMA_5:
 596                 case XFER_UDMA_4:
 597                 case XFER_UDMA_3:
 598                 case XFER_UDMA_2:
 599                 case XFER_UDMA_1:
 600                 case XFER_UDMA_0:
 601                         if (chipset_family >= ATA_133) {
 602                                 regdw |= 0x04;
 603                                 regdw &= 0xfffff00f;
 604                                 /* check if ATA133 enable */
 605                                 if (regdw & 0x08) {
 606                                         regdw |= (unsigned long)cycle_time_value[ATA_133][speed-XFER_UDMA_0] << 4;
 607                                         regdw |= (unsigned long)cvs_time_value[ATA_133][speed-XFER_UDMA_0] << 8;
 608                                 } else {
 609                                 /* if ATA133 disable, we should not set speed above UDMA5 */
 610                                         if (speed > XFER_UDMA_5)
 611                                                 speed = XFER_UDMA_5;
 612                                         regdw |= (unsigned long)cycle_time_value[ATA_100][speed-XFER_UDMA_0] << 4;
 613                                         regdw |= (unsigned long)cvs_time_value[ATA_100][speed-XFER_UDMA_0] << 8;
 614                                 }
 615                                 pci_write_config_dword(dev, (unsigned long)drive_pci, regdw);
 616                         } else {
 617                                 /* Force the UDMA bit on if we want to use UDMA */
 618                                 reg |= 0x80;
 619                                 /* clean reg cycle time bits */
 620                                 reg &= ~((0xFF >> (8 - cycle_time_range[chipset_family]))
 621                                          << cycle_time_offset[chipset_family]);
 622                                 /* set reg cycle time bits */
 623                                 reg |= cycle_time_value[chipset_family][speed-XFER_UDMA_0]
 624                                         << cycle_time_offset[chipset_family];
 625                                 pci_write_config_byte(dev, drive_pci+1, reg);
 626                         }
 627                         break;
 628                 case XFER_MW_DMA_2:
 629                 case XFER_MW_DMA_1:
 630                 case XFER_MW_DMA_0:
 631                 case XFER_SW_DMA_2:
 632                 case XFER_SW_DMA_1:
 633                 case XFER_SW_DMA_0:
 634                         break;
 635                 case XFER_PIO_4: return((int) config_chipset_for_pio(drive, 4));
 636                 case XFER_PIO_3: return((int) config_chipset_for_pio(drive, 3));
 637                 case XFER_PIO_2: return((int) config_chipset_for_pio(drive, 2));
 638                 case XFER_PIO_1: return((int) config_chipset_for_pio(drive, 1));
 639                 case XFER_PIO_0:
 640                 default:         return((int) config_chipset_for_pio(drive, 0));
 641         }
 642
 643         return ((int) ide_config_drive_speed(drive, speed));
 644 }
 645
 646 static void sis5513_tune_drive (ide_drive_t *drive, u8 pio)
 647 {
 648         (void) config_chipset_for_pio(drive, pio);
 649 }
 650
 651 /*
 652  * ((id->hw_config & 0x4000|0x2000) && (HWIF(drive)->udma_four))
 653  */
 654 static int config_chipset_for_dma (ide_drive_t *drive)
 655 {
 656         u8 speed        = ide_dma_speed(drive, sis5513_ratemask(drive));
 657
 658 #ifdef DEBUG
 659         printk("SIS5513: config_chipset_for_dma, drive %d, ultra %x\n",
 660                drive->dn, drive->id->dma_ultra);
 661 #endif
 662
 663         if (!(speed))
 664                 return 0;
 665
 666         sis5513_tune_chipset(drive, speed);
 667         return ide_dma_enable(drive);
 668 }
 669
 670 static int sis5513_config_drive_xfer_rate (ide_drive_t *drive)
 671 {
 672         ide_hwif_t *hwif        = HWIF(drive);
 673         struct hd_driveid *id   = drive->id;
 674
 675         drive->init_speed = 0;
 676
 677         if (id && (id->capability & 1) && drive->autodma) {
 678
 679                 if (ide_use_dma(drive)) {
 680                         if (config_chipset_for_dma(drive))
 681                                 return hwif->ide_dma_on(drive);
 682                 }
 683
 684                 goto fast_ata_pio;
 685
 686         } else if ((id->capability & 8) || (id->field_valid & 2)) {
 687 fast_ata_pio:
 688                 sis5513_tune_drive(drive, 5);
 689                 return hwif->ide_dma_off_quietly(drive);
 690         }
 691         /* IORDY not supported */
 692         return 0;
 693 }
 694
 695 /* initiates/aborts (U)DMA read/write operations on a drive. */
 696 static int sis5513_config_xfer_rate (ide_drive_t *drive)
 697 {
 698         config_drive_art_rwp(drive);
 699         config_art_rwp_pio(drive, 5);
 700         return sis5513_config_drive_xfer_rate(drive);
 701 }
 702
 703 /*
 704   Future simpler config_xfer_rate :
 705    When ide_find_best_mode is made bad-drive aware
 706    - remove config_drive_xfer_rate and config_chipset_for_dma,
 707    - replace config_xfer_rate with the following
 708
 709 static int sis5513_config_xfer_rate (ide_drive_t *drive)
 710 {
 711         u16 w80 = HWIF(drive)->udma_four;
 712         u16 speed;
 713
 714         config_drive_art_rwp(drive);
 715         config_art_rwp_pio(drive, 5);
 716
 717         speed = ide_find_best_mode(drive,
 718                 XFER_PIO | XFER_EPIO | XFER_SWDMA | XFER_MWDMA |
 719                 (chipset_family >= ATA_33 ? XFER_UDMA : 0) |
 720                 (w80 && chipset_family >= ATA_66 ? XFER_UDMA_66 : 0) |
 721                 (w80 && chipset_family >= ATA_100a ? XFER_UDMA_100 : 0) |
 722                 (w80 && chipset_family >= ATA_133a ? XFER_UDMA_133 : 0));
 723
 724         sis5513_tune_chipset(drive, speed);
 725
 726         if (drive->autodma && (speed & XFER_MODE) != XFER_PIO)
 727                 return HWIF(drive)->ide_dma_on(drive);
 728         return HWIF(drive)->ide_dma_off_quietly(drive);
 729 }
 730 */
 731
 732 /* Chip detection and general config */
 733 static unsigned int __devinit init_chipset_sis5513 (struct pci_dev *dev, const char *name)
 734 {
 735         struct pci_dev *host;
 736         int i = 0;
 737
 738         chipset_family = 0;
 739
 740         for (i = 0; i < ARRAY_SIZE(SiSHostChipInfo) && !chipset_family; i++) {
 741
 742                 host = pci_find_device(PCI_VENDOR_ID_SI, SiSHostChipInfo[i].host_id, NULL);
 743
 744                 if (!host)
 745                         continue;
 746
 747                 chipset_family = SiSHostChipInfo[i].chipset_family;
 748
 749                 /* Special case for SiS630 : 630S/ET is ATA_100a */
 750                 if (SiSHostChipInfo[i].host_id == PCI_DEVICE_ID_SI_630) {
 751                         u8 hostrev;
 752                         pci_read_config_byte(host, PCI_REVISION_ID, &hostrev);
 753                         if (hostrev >= 0x30)
 754                                 chipset_family = ATA_100a;
 755                 }
 756
 757                 printk(KERN_INFO "SIS5513: %s %s controller\n",
 758                          SiSHostChipInfo[i].name, chipset_capability[chipset_family]);
 759         }
 760
 761         if (!chipset_family) { /* Belongs to pci-quirks */
 762
 763                         u32 idemisc;
 764                         u16 trueid;
 765
 766                         /* Disable ID masking and register remapping */
 767                         pci_read_config_dword(dev, 0x54, &idemisc);
 768                         pci_write_config_dword(dev, 0x54, (idemisc & 0x7fffffff));
 769                         pci_read_config_word(dev, PCI_DEVICE_ID, &trueid);
 770                         pci_write_config_dword(dev, 0x54, idemisc);
 771
 772                         if (trueid == 0x5518) {
 773                                 printk(KERN_INFO "SIS5513: SiS 962/963 MuTIOL IDE UDMA133 controller\n");
 774                                 chipset_family = ATA_133;
 775
 776                                 /* Check for 5513 compability mapping
 777                                  * We must use this, else the port enabled code will fail,
 778                                  * as it expects the enablebits at 0x4a.
 779                                  */
 780                                 if ((idemisc & 0x40000000) == 0) {
 781                                         pci_write_config_dword(dev, 0x54, idemisc | 0x40000000);
 782                                         printk(KERN_INFO "SIS5513: Switching to 5513 register mapping\n");
 783                                 }
 784                         }
 785         }
 786
 787         if (!chipset_family) { /* Belongs to pci-quirks */
 788
 789                         struct pci_dev *lpc_bridge;
 790                         u16 trueid;
 791                         u8 prefctl;
 792                         u8 idecfg;
 793                         u8 sbrev;
 794
 795                         pci_read_config_byte(dev, 0x4a, &idecfg);
 796                         pci_write_config_byte(dev, 0x4a, idecfg | 0x10);
 797                         pci_read_config_word(dev, PCI_DEVICE_ID, &trueid);
 798                         pci_write_config_byte(dev, 0x4a, idecfg);
 799
 800                         if (trueid == 0x5517) { /* SiS 961/961B */
 801
 802                                 lpc_bridge = pci_find_slot(0x00, 0x10); /* Bus 0, Dev 2, Fn 0 */
 803                                 pci_read_config_byte(lpc_bridge, PCI_REVISION_ID, &sbrev);
 804                                 pci_read_config_byte(dev, 0x49, &prefctl);
 805
 806                                 if (sbrev == 0x10 && (prefctl & 0x80)) {
 807                                         printk(KERN_INFO "SIS5513: SiS 961B MuTIOL IDE UDMA133 controller\n");
 808                                         chipset_family = ATA_133a;
 809                                 } else {
 810                                         printk(KERN_INFO "SIS5513: SiS 961 MuTIOL IDE UDMA100 controller\n");
 811                                         chipset_family = ATA_100;
 812                                 }
 813                         }
 814         }
 815
 816         if (!chipset_family)
 817                 return -1;
 818
 819         /* Make general config ops here
 820            1/ tell IDE channels to operate in Compatibility mode only
 821            2/ tell old chips to allow per drive IDE timings */
 822
 823         {
 824                 u8 reg;
 825                 u16 regw;
 826
 827                 switch(chipset_family) {
 828                         case ATA_133:
 829                                 /* SiS962 operation mode */
 830                                 pci_read_config_word(dev, 0x50, &regw);
 831                                 if (regw & 0x08)
 832                                         pci_write_config_word(dev, 0x50, regw&0xfff7);
 833                                 pci_read_config_word(dev, 0x52, &regw);
 834                                 if (regw & 0x08)
 835                                         pci_write_config_word(dev, 0x52, regw&0xfff7);
 836                                 break;
 837                         case ATA_133a:
 838                         case ATA_100:
 839                                 /* Fixup latency */
 840                                 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x80);
 841                                 /* Set compatibility bit */
 842                                 pci_read_config_byte(dev, 0x49, &reg);
 843                                 if (!(reg & 0x01)) {
 844                                         pci_write_config_byte(dev, 0x49, reg|0x01);
 845                                 }
 846                                 break;
 847                         case ATA_100a:
 848                         case ATA_66:
 849                                 /* Fixup latency */
 850                                 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x10);
 851
 852                                 /* On ATA_66 chips the bit was elsewhere */
 853                                 pci_read_config_byte(dev, 0x52, &reg);
 854                                 if (!(reg & 0x04)) {
 855                                         pci_write_config_byte(dev, 0x52, reg|0x04);
 856                                 }
 857                                 break;
 858                         case ATA_33:
 859                                 /* On ATA_33 we didn't have a single bit to set */
 860                                 pci_read_config_byte(dev, 0x09, &reg);
 861                                 if ((reg & 0x0f) != 0x00) {
 862                                         pci_write_config_byte(dev, 0x09, reg&0xf0);
 863                                 }
 864                         case ATA_16:
 865                                 /* force per drive recovery and active timings
 866                                    needed on ATA_33 and below chips */
 867                                 pci_read_config_byte(dev, 0x52, &reg);
 868                                 if (!(reg & 0x08)) {
 869                                         pci_write_config_byte(dev, 0x52, reg|0x08);
 870                                 }
 871                                 break;
 872                 }
 873
 874 #if defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS)
 875                 if (!sis_proc) {
 876                         sis_proc = 1;
 877                         bmide_dev = dev;
 878                         ide_pci_create_host_proc("sis", sis_get_info);
 879                 }
 880 #endif
 881         }
 882
 883         return 0;
 884 }
 885
 886 static unsigned int __devinit ata66_sis5513 (ide_hwif_t *hwif)
 887 {
 888         u8 ata66 = 0;
 889
 890         if (chipset_family >= ATA_133) {
 891                 u16 regw = 0;
 892                 u16 reg_addr = hwif->channel ? 0x52: 0x50;
 893                 pci_read_config_word(hwif->pci_dev, reg_addr, &regw);
 894                 ata66 = (regw & 0x8000) ? 0 : 1;
 895         } else if (chipset_family >= ATA_66) {
 896                 u8 reg48h = 0;
 897                 u8 mask = hwif->channel ? 0x20 : 0x10;
 898                 pci_read_config_byte(hwif->pci_dev, 0x48, &reg48h);
 899                 ata66 = (reg48h & mask) ? 0 : 1;
 900         }
 901         return ata66;
 902 }
 903
 904 static void __devinit init_hwif_sis5513 (ide_hwif_t *hwif)
 905 {
 906         hwif->autodma = 0;
 907
 908         if (!hwif->irq)
 909                 hwif->irq = hwif->channel ? 15 : 14;
 910
 911         hwif->tuneproc = &sis5513_tune_drive;
 912         hwif->speedproc = &sis5513_tune_chipset;
 913
 914         if (!(hwif->dma_base)) {
 915                 hwif->drives[0].autotune = 1;
 916                 hwif->drives[1].autotune = 1;
 917                 return;
 918         }
 919
 920         hwif->atapi_dma = 1;
 921         hwif->ultra_mask = 0x7f;
 922         hwif->mwdma_mask = 0x07;
 923         hwif->swdma_mask = 0x07;
 924
 925         if (!chipset_family)
 926                 return;
 927
 928         if (!(hwif->udma_four))
 929                 hwif->udma_four = ata66_sis5513(hwif);
 930
 931         if (chipset_family > ATA_16) {
 932                 hwif->ide_dma_check = &sis5513_config_xfer_rate;
 933                 if (!noautodma)
 934                         hwif->autodma = 1;
 935         }
 936         hwif->drives[0].autodma = hwif->autodma;
 937         hwif->drives[1].autodma = hwif->autodma;
 938         return;
 939 }
 940
 941 static ide_pci_device_t sis5513_chipset __devinitdata = {
 942         .name           = "SIS5513",
 943         .init_chipset   = init_chipset_sis5513,
 944         .init_hwif      = init_hwif_sis5513,
 945         .channels       = 2,
 946         .autodma        = NOAUTODMA,
 947         .enablebits     = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
 948         .bootable       = ON_BOARD,
 949 };
 950
 951 static int __devinit sis5513_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 952 {
 953         return ide_setup_pci_device(dev, &sis5513_chipset);
 954 }
 955
 956 static struct pci_device_id sis5513_pci_tbl[] = {
 957         { PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5513, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
 958         { PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5518, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
 959         { 0, },
 960 };
 961 MODULE_DEVICE_TABLE(pci, sis5513_pci_tbl);
 962
 963 static struct pci_driver driver = {
 964         .name           = "SIS_IDE",
 965         .id_table       = sis5513_pci_tbl,
 966         .probe          = sis5513_init_one,
 967 };
 968
 969 static int sis5513_ide_init(void)
 970 {
 971         return ide_pci_register_driver(&driver);
 972 }
 973
 974 module_init(sis5513_ide_init);
 975
 976 MODULE_AUTHOR("Lionel Bouton, L C Chang, Andre Hedrick, Vojtech Pavlik");
 977 MODULE_DESCRIPTION("PCI driver module for SIS IDE");
 978 MODULE_LICENSE("GPL");
 979
 980 /*
 981  * TODO:
 982  *      - CLEANUP
 983  *      - Use drivers/ide/ide-timing.h !
 984  *      - More checks in the config registers (force values instead of
 985  *        relying on the BIOS setting them correctly).
 986  *      - Further optimisations ?
 987  *        . for example ATA66+ regs 0x48 & 0x4A
 988  */