drivers/char/agp/via-agp.c

   1 /*
   2  * VIA AGPGART routines.
   3  */
   4
   5 #include <linux/types.h>
   6 #include <linux/module.h>
   7 #include <linux/pci.h>
   8 #include <linux/init.h>
   9 #include <linux/agp_backend.h>
  10 #include "agp.h"
  11
  12 static const struct pci_device_id agp_via_pci_table[];
  13
  14 #define VIA_GARTCTRL    0x80
  15 #define VIA_APSIZE      0x84
  16 #define VIA_ATTBASE     0x88
  17
  18 #define VIA_AGP3_GARTCTRL       0x90
  19 #define VIA_AGP3_APSIZE         0x94
  20 #define VIA_AGP3_ATTBASE        0x98
  21 #define VIA_AGPSEL              0xfd
  22
  23 static int via_fetch_size(void)
  24 {
  25         int i;
  26         u8 temp;
  27         struct aper_size_info_8 *values;
  28
  29         values = A_SIZE_8(agp_bridge->driver->aperture_sizes);
  30         pci_read_config_byte(agp_bridge->dev, VIA_APSIZE, &temp);
  31         for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
  32                 if (temp == values[i].size_value) {
  33                         agp_bridge->previous_size =
  34                             agp_bridge->current_size = (void *) (values + i);
  35                         agp_bridge->aperture_size_idx = i;
  36                         return values[i].size;
  37                 }
  38         }
  39         printk(KERN_ERR PFX "Unknown aperture size from AGP bridge (0x%x)\n", temp);
  40         return 0;
  41 }
  42
  43
  44 static int via_configure(void)
  45 {
  46         u32 temp;
  47         struct aper_size_info_8 *current_size;
  48
  49         current_size = A_SIZE_8(agp_bridge->current_size);
  50         /* aperture size */
  51         pci_write_config_byte(agp_bridge->dev, VIA_APSIZE,
  52                               current_size->size_value);
  53         /* address to map too */
  54         pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
  55         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
  56
  57         /* GART control register */
  58         pci_write_config_dword(agp_bridge->dev, VIA_GARTCTRL, 0x0000000f);
  59
  60         /* attbase - aperture GATT base */
  61         pci_write_config_dword(agp_bridge->dev, VIA_ATTBASE,
  62                             (agp_bridge->gatt_bus_addr & 0xfffff000) | 3);
  63         return 0;
  64 }
  65
  66
  67 static void via_cleanup(void)
  68 {
  69         struct aper_size_info_8 *previous_size;
  70
  71         previous_size = A_SIZE_8(agp_bridge->previous_size);
  72         pci_write_config_byte(agp_bridge->dev, VIA_APSIZE,
  73                               previous_size->size_value);
  74         /* Do not disable by writing 0 to VIA_ATTBASE, it screws things up
  75          * during reinitialization.
  76          */
  77 }
  78
  79
  80 static void via_tlbflush(struct agp_memory *mem)
  81 {
  82         u32 temp;
  83
  84         pci_read_config_dword(agp_bridge->dev, VIA_GARTCTRL, &temp);
  85         temp |= (1<<7);
  86         pci_write_config_dword(agp_bridge->dev, VIA_GARTCTRL, temp);
  87         temp &= ~(1<<7);
  88         pci_write_config_dword(agp_bridge->dev, VIA_GARTCTRL, temp);
  89 }
  90
  91
  92 static const struct aper_size_info_8 via_generic_sizes[9] =
  93 {
  94         {256, 65536, 6, 0},
  95         {128, 32768, 5, 128},
  96         {64, 16384, 4, 192},
  97         {32, 8192, 3, 224},
  98         {16, 4096, 2, 240},
  99         {8, 2048, 1, 248},
 100         {4, 1024, 0, 252},
 101         {2, 512, 0, 254},
 102         {1, 256, 0, 255}
 103 };
 104
 105
 106 static int via_fetch_size_agp3(void)
 107 {
 108         int i;
 109         u16 temp;
 110         struct aper_size_info_16 *values;
 111
 112         values = A_SIZE_16(agp_bridge->driver->aperture_sizes);
 113         pci_read_config_word(agp_bridge->dev, VIA_AGP3_APSIZE, &temp);
 114         temp &= 0xfff;
 115
 116         for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
 117                 if (temp == values[i].size_value) {
 118                         agp_bridge->previous_size =
 119                                 agp_bridge->current_size = (void *) (values + i);
 120                         agp_bridge->aperture_size_idx = i;
 121                         return values[i].size;
 122                 }
 123         }
 124         return 0;
 125 }
 126
 127
 128 static int via_configure_agp3(void)
 129 {
 130         u32 temp;
 131         struct aper_size_info_16 *current_size;
 132
 133         current_size = A_SIZE_16(agp_bridge->current_size);
 134
 135         /* address to map too */
 136         pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
 137         agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
 138
 139         /* attbase - aperture GATT base */
 140         pci_write_config_dword(agp_bridge->dev, VIA_AGP3_ATTBASE,
 141                 agp_bridge->gatt_bus_addr & 0xfffff000);
 142
 143         /* 1. Enable GTLB in RX90<7>, all AGP aperture access needs to fetch
 144          *    translation table first.
 145          * 2. Enable AGP aperture in RX91<0>. This bit controls the enabling of the
 146          *    graphics AGP aperture for the AGP3.0 port.
 147          */
 148         pci_read_config_dword(agp_bridge->dev, VIA_AGP3_GARTCTRL, &temp);
 149         pci_write_config_dword(agp_bridge->dev, VIA_AGP3_GARTCTRL, temp | (3<<7));
 150         return 0;
 151 }
 152
 153
 154 static void via_cleanup_agp3(void)
 155 {
 156         struct aper_size_info_16 *previous_size;
 157
 158         previous_size = A_SIZE_16(agp_bridge->previous_size);
 159         pci_write_config_byte(agp_bridge->dev, VIA_APSIZE, previous_size->size_value);
 160 }
 161
 162
 163 static void via_tlbflush_agp3(struct agp_memory *mem)
 164 {
 165         u32 temp;
 166
 167         pci_read_config_dword(agp_bridge->dev, VIA_AGP3_GARTCTRL, &temp);
 168         pci_write_config_dword(agp_bridge->dev, VIA_AGP3_GARTCTRL, temp & ~(1<<7));
 169         pci_write_config_dword(agp_bridge->dev, VIA_AGP3_GARTCTRL, temp);
 170 }
 171
 172
 173 static const struct agp_bridge_driver via_agp3_driver = {
 174         .owner                  = THIS_MODULE,
 175         .aperture_sizes         = agp3_generic_sizes,
 176         .size_type              = U8_APER_SIZE,
 177         .num_aperture_sizes     = 10,
 178         .configure              = via_configure_agp3,
 179         .fetch_size             = via_fetch_size_agp3,
 180         .cleanup                = via_cleanup_agp3,
 181         .tlb_flush              = via_tlbflush_agp3,
 182         .mask_memory            = agp_generic_mask_memory,
 183         .masks                  = NULL,
 184         .agp_enable             = agp_generic_enable,
 185         .cache_flush            = global_cache_flush,
 186         .create_gatt_table      = agp_generic_create_gatt_table,
 187         .free_gatt_table        = agp_generic_free_gatt_table,
 188         .insert_memory          = agp_generic_insert_memory,
 189         .remove_memory          = agp_generic_remove_memory,
 190         .alloc_by_type          = agp_generic_alloc_by_type,
 191         .free_by_type           = agp_generic_free_by_type,
 192         .agp_alloc_page         = agp_generic_alloc_page,
 193         .agp_destroy_page       = agp_generic_destroy_page,
 194         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
 195 };
 196
 197 static const struct agp_bridge_driver via_driver = {
 198         .owner                  = THIS_MODULE,
 199         .aperture_sizes         = via_generic_sizes,
 200         .size_type              = U8_APER_SIZE,
 201         .num_aperture_sizes     = 9,
 202         .configure              = via_configure,
 203         .fetch_size             = via_fetch_size,
 204         .cleanup                = via_cleanup,
 205         .tlb_flush              = via_tlbflush,
 206         .mask_memory            = agp_generic_mask_memory,
 207         .masks                  = NULL,
 208         .agp_enable             = agp_generic_enable,
 209         .cache_flush            = global_cache_flush,
 210         .create_gatt_table      = agp_generic_create_gatt_table,
 211         .free_gatt_table        = agp_generic_free_gatt_table,
 212         .insert_memory          = agp_generic_insert_memory,
 213         .remove_memory          = agp_generic_remove_memory,
 214         .alloc_by_type          = agp_generic_alloc_by_type,
 215         .free_by_type           = agp_generic_free_by_type,
 216         .agp_alloc_page         = agp_generic_alloc_page,
 217         .agp_destroy_page       = agp_generic_destroy_page,
 218         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
 219 };
 220
 221 static struct agp_device_ids via_agp_device_ids[] __devinitdata =
 222 {
 223         {
 224                 .device_id      = PCI_DEVICE_ID_VIA_82C597_0,
 225                 .chipset_name   = "Apollo VP3",
 226         },
 227
 228         {
 229                 .device_id      = PCI_DEVICE_ID_VIA_82C598_0,
 230                 .chipset_name   = "Apollo MVP3",
 231         },
 232
 233         {
 234                 .device_id      = PCI_DEVICE_ID_VIA_8501_0,
 235                 .chipset_name   = "Apollo MVP4",
 236         },
 237
 238         /* VT8601 */
 239         {
 240                 .device_id      = PCI_DEVICE_ID_VIA_8601_0,
 241                 .chipset_name   = "Apollo ProMedia/PLE133Ta",
 242         },
 243
 244         /* VT82C693A / VT28C694T */
 245         {
 246                 .device_id      = PCI_DEVICE_ID_VIA_82C691_0,
 247                 .chipset_name   = "Apollo Pro 133",
 248         },
 249
 250         {
 251                 .device_id      = PCI_DEVICE_ID_VIA_8371_0,
 252                 .chipset_name   = "KX133",
 253         },
 254
 255         /* VT8633 */
 256         {
 257                 .device_id      = PCI_DEVICE_ID_VIA_8633_0,
 258                 .chipset_name   = "Pro 266",
 259         },
 260
 261         {
 262                 .device_id      = PCI_DEVICE_ID_VIA_XN266,
 263                 .chipset_name   = "Apollo Pro266",
 264         },
 265
 266         /* VT8361 */
 267         {
 268                 .device_id      = PCI_DEVICE_ID_VIA_8361,
 269                 .chipset_name   = "KLE133",
 270         },
 271
 272         /* VT8365 / VT8362 */
 273         {
 274                 .device_id      = PCI_DEVICE_ID_VIA_8363_0,
 275                 .chipset_name   = "Twister-K/KT133x/KM133",
 276         },
 277
 278         /* VT8753A */
 279         {
 280                 .device_id      = PCI_DEVICE_ID_VIA_8753_0,
 281                 .chipset_name   = "P4X266",
 282         },
 283
 284         /* VT8366 */
 285         {
 286                 .device_id      = PCI_DEVICE_ID_VIA_8367_0,
 287                 .chipset_name   = "KT266/KY266x/KT333",
 288         },
 289
 290         /* VT8633 (for CuMine/ Celeron) */
 291         {
 292                 .device_id      = PCI_DEVICE_ID_VIA_8653_0,
 293                 .chipset_name   = "Pro266T",
 294         },
 295
 296         /* KM266 / PM266 */
 297         {
 298                 .device_id      = PCI_DEVICE_ID_VIA_XM266,
 299                 .chipset_name   = "PM266/KM266",
 300         },
 301
 302         /* CLE266 */
 303         {
 304                 .device_id      = PCI_DEVICE_ID_VIA_862X_0,
 305                 .chipset_name   = "CLE266",
 306         },
 307
 308         {
 309                 .device_id      = PCI_DEVICE_ID_VIA_8377_0,
 310                 .chipset_name   = "KT400/KT400A/KT600",
 311         },
 312
 313         /* VT8604 / VT8605 / VT8603
 314          * (Apollo Pro133A chipset with S3 Savage4) */
 315         {
 316                 .device_id      = PCI_DEVICE_ID_VIA_8605_0,
 317                 .chipset_name   = "ProSavage PM133/PL133/PN133"
 318         },
 319
 320         /* P4M266x/P4N266 */
 321         {
 322                 .device_id      = PCI_DEVICE_ID_VIA_8703_51_0,
 323                 .chipset_name   = "P4M266x/P4N266",
 324         },
 325
 326         /* VT8754 */
 327         {
 328                 .device_id      = PCI_DEVICE_ID_VIA_8754C_0,
 329                 .chipset_name   = "PT800",
 330         },
 331
 332         /* P4X600 */
 333         {
 334                 .device_id      = PCI_DEVICE_ID_VIA_8763_0,
 335                 .chipset_name   = "P4X600"
 336         },
 337
 338         /* KM400 */
 339         {
 340                 .device_id      = PCI_DEVICE_ID_VIA_8378_0,
 341                 .chipset_name   = "KM400/KM400A",
 342         },
 343
 344         /* PT880 */
 345         {
 346                 .device_id      = PCI_DEVICE_ID_VIA_PT880,
 347                 .chipset_name   = "PT880",
 348         },
 349
 350         /* PT880 Ultra */
 351         {
 352                 .device_id      = PCI_DEVICE_ID_VIA_PT880ULTRA,
 353                 .chipset_name   = "PT880 Ultra",
 354         },
 355
 356         /* PT890 */
 357         {
 358                 .device_id      = PCI_DEVICE_ID_VIA_8783_0,
 359                 .chipset_name   = "PT890",
 360         },
 361
 362         /* PM800/PN800/PM880/PN880 */
 363         {
 364                 .device_id      = PCI_DEVICE_ID_VIA_PX8X0_0,
 365                 .chipset_name   = "PM800/PN800/PM880/PN880",
 366         },
 367         /* KT880 */
 368         {
 369                 .device_id      = PCI_DEVICE_ID_VIA_3269_0,
 370                 .chipset_name   = "KT880",
 371         },
 372         /* KTxxx/Px8xx */
 373         {
 374                 .device_id      = PCI_DEVICE_ID_VIA_83_87XX_1,
 375                 .chipset_name   = "VT83xx/VT87xx/KTxxx/Px8xx",
 376         },
 377         /* P4M800 */
 378         {
 379                 .device_id      = PCI_DEVICE_ID_VIA_3296_0,
 380                 .chipset_name   = "P4M800",
 381         },
 382         /* P4M800CE */
 383         {
 384                 .device_id      = PCI_DEVICE_ID_VIA_P4M800CE,
 385                 .chipset_name   = "VT3314",
 386         },
 387         /* VT3324 / CX700 */
 388         {
 389                 .device_id  = PCI_DEVICE_ID_VIA_VT3324,
 390                 .chipset_name   = "CX700",
 391         },
 392         /* VT3336 - this is a chipset for AMD Athlon/K8 CPU. Due to K8's unique
 393          * architecture, the AGP resource and behavior are different from
 394          * the traditional AGP which resides only in chipset. AGP is used
 395          * by 3D driver which wasn't available for the VT3336 and VT3364
 396          * generation until now.  Unfortunately, by testing, VT3364 works
 397          * but VT3336 doesn't. - explaination from via, just leave this as
 398          * as a placeholder to avoid future patches adding it back in.
 399          */
 400 #if 0
 401         {
 402                 .device_id  = PCI_DEVICE_ID_VIA_VT3336,
 403                 .chipset_name   = "VT3336",
 404         },
 405 #endif
 406         /* P4M890 */
 407         {
 408                 .device_id  = PCI_DEVICE_ID_VIA_P4M890,
 409                 .chipset_name   = "P4M890",
 410         },
 411         /* P4M900 */
 412         {
 413                 .device_id  = PCI_DEVICE_ID_VIA_VT3364,
 414                 .chipset_name   = "P4M900",
 415         },
 416         { }, /* dummy final entry, always present */
 417 };
 418
 419
 420 /*
 421  * VIA's AGP3 chipsets do magick to put the AGP bridge compliant
 422  * with the same standards version as the graphics card.
 423  */
 424 static void check_via_agp3 (struct agp_bridge_data *bridge)
 425 {
 426         u8 reg;
 427
 428         pci_read_config_byte(bridge->dev, VIA_AGPSEL, &reg);
 429         /* Check AGP 2.0 compatibility mode. */
 430         if ((reg & (1<<1))==0)
 431                 bridge->driver = &via_agp3_driver;
 432 }
 433
 434
 435 static int __devinit agp_via_probe(struct pci_dev *pdev,
 436                                    const struct pci_device_id *ent)
 437 {
 438         struct agp_device_ids *devs = via_agp_device_ids;
 439         struct agp_bridge_data *bridge;
 440         int j = 0;
 441         u8 cap_ptr;
 442
 443         cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
 444         if (!cap_ptr)
 445                 return -ENODEV;
 446
 447         j = ent - agp_via_pci_table;
 448         printk (KERN_INFO PFX "Detected VIA %s chipset\n", devs[j].chipset_name);
 449
 450         bridge = agp_alloc_bridge();
 451         if (!bridge)
 452                 return -ENOMEM;
 453
 454         bridge->dev = pdev;
 455         bridge->capndx = cap_ptr;
 456         bridge->driver = &via_driver;
 457
 458         /*
 459          * Garg, there are KT400s with KT266 IDs.
 460          */
 461         if (pdev->device == PCI_DEVICE_ID_VIA_8367_0) {
 462                 /* Is there a KT400 subsystem ? */
 463                 if (pdev->subsystem_device == PCI_DEVICE_ID_VIA_8377_0) {
 464                         printk(KERN_INFO PFX "Found KT400 in disguise as a KT266.\n");
 465                         check_via_agp3(bridge);
 466                 }
 467         }
 468
 469         /* If this is an AGP3 bridge, check which mode its in and adjust. */
 470         get_agp_version(bridge);
 471         if (bridge->major_version >= 3)
 472                 check_via_agp3(bridge);
 473
 474         /* Fill in the mode register */
 475         pci_read_config_dword(pdev,
 476                         bridge->capndx+PCI_AGP_STATUS, &bridge->mode);
 477
 478         pci_set_drvdata(pdev, bridge);
 479         return agp_add_bridge(bridge);
 480 }
 481
 482 static void __devexit agp_via_remove(struct pci_dev *pdev)
 483 {
 484         struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
 485
 486         agp_remove_bridge(bridge);
 487         agp_put_bridge(bridge);
 488 }
 489
 490 #ifdef CONFIG_PM
 491
 492 static int agp_via_suspend(struct pci_dev *pdev, pm_message_t state)
 493 {
 494         pci_save_state (pdev);
 495         pci_set_power_state (pdev, PCI_D3hot);
 496
 497         return 0;
 498 }
 499
 500 static int agp_via_resume(struct pci_dev *pdev)
 501 {
 502         struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
 503
 504         pci_set_power_state (pdev, PCI_D0);
 505         pci_restore_state(pdev);
 506
 507         if (bridge->driver == &via_agp3_driver)
 508                 return via_configure_agp3();
 509         else if (bridge->driver == &via_driver)
 510                 return via_configure();
 511
 512         return 0;
 513 }
 514
 515 #endif /* CONFIG_PM */
 516
 517 /* must be the same order as name table above */
 518 static const struct pci_device_id agp_via_pci_table[] = {
 519 #define ID(x) \
 520         {                                               \
 521         .class          = (PCI_CLASS_BRIDGE_HOST << 8), \
 522         .class_mask     = ~0,                           \
 523         .vendor         = PCI_VENDOR_ID_VIA,            \
 524         .device         = x,                            \
 525         .subvendor      = PCI_ANY_ID,                   \
 526         .subdevice      = PCI_ANY_ID,                   \
 527         }
 528         ID(PCI_DEVICE_ID_VIA_82C597_0),
 529         ID(PCI_DEVICE_ID_VIA_82C598_0),
 530         ID(PCI_DEVICE_ID_VIA_8501_0),
 531         ID(PCI_DEVICE_ID_VIA_8601_0),
 532         ID(PCI_DEVICE_ID_VIA_82C691_0),
 533         ID(PCI_DEVICE_ID_VIA_8371_0),
 534         ID(PCI_DEVICE_ID_VIA_8633_0),
 535         ID(PCI_DEVICE_ID_VIA_XN266),
 536         ID(PCI_DEVICE_ID_VIA_8361),
 537         ID(PCI_DEVICE_ID_VIA_8363_0),
 538         ID(PCI_DEVICE_ID_VIA_8753_0),
 539         ID(PCI_DEVICE_ID_VIA_8367_0),
 540         ID(PCI_DEVICE_ID_VIA_8653_0),
 541         ID(PCI_DEVICE_ID_VIA_XM266),
 542         ID(PCI_DEVICE_ID_VIA_862X_0),
 543         ID(PCI_DEVICE_ID_VIA_8377_0),
 544         ID(PCI_DEVICE_ID_VIA_8605_0),
 545         ID(PCI_DEVICE_ID_VIA_8703_51_0),
 546         ID(PCI_DEVICE_ID_VIA_8754C_0),
 547         ID(PCI_DEVICE_ID_VIA_8763_0),
 548         ID(PCI_DEVICE_ID_VIA_8378_0),
 549         ID(PCI_DEVICE_ID_VIA_PT880),
 550         ID(PCI_DEVICE_ID_VIA_PT880ULTRA),
 551         ID(PCI_DEVICE_ID_VIA_8783_0),
 552         ID(PCI_DEVICE_ID_VIA_PX8X0_0),
 553         ID(PCI_DEVICE_ID_VIA_3269_0),
 554         ID(PCI_DEVICE_ID_VIA_83_87XX_1),
 555         ID(PCI_DEVICE_ID_VIA_3296_0),
 556         ID(PCI_DEVICE_ID_VIA_P4M800CE),
 557         ID(PCI_DEVICE_ID_VIA_VT3324),
 558         ID(PCI_DEVICE_ID_VIA_P4M890),
 559         ID(PCI_DEVICE_ID_VIA_VT3364),
 560         { }
 561 };
 562
 563 MODULE_DEVICE_TABLE(pci, agp_via_pci_table);
 564
 565
 566 static struct pci_driver agp_via_pci_driver = {
 567         .name           = "agpgart-via",
 568         .id_table       = agp_via_pci_table,
 569         .probe          = agp_via_probe,
 570         .remove         = agp_via_remove,
 571 #ifdef CONFIG_PM
 572         .suspend        = agp_via_suspend,
 573         .resume         = agp_via_resume,
 574 #endif
 575 };
 576
 577
 578 static int __init agp_via_init(void)
 579 {
 580         if (agp_off)
 581                 return -EINVAL;
 582         return pci_register_driver(&agp_via_pci_driver);
 583 }
 584
 585 static void __exit agp_via_cleanup(void)
 586 {
 587         pci_unregister_driver(&agp_via_pci_driver);
 588 }
 589
 590 module_init(agp_via_init);
 591 module_exit(agp_via_cleanup);
 592
 593 MODULE_LICENSE("GPL");
 594 MODULE_AUTHOR("Dave Jones <davej@codemonkey.org.uk>");