1 /* 2 * SiS AGPGART routines. 3 */ 4 5 #include <linux/module.h> 6 #include <linux/pci.h> 7 #include <linux/init.h> 8 #include <linux/agp_backend.h> 9 #include <linux/delay.h> 10 #include "agp.h" 11 12 #define SIS_ATTBASE 0x90 13 #define SIS_APSIZE 0x94 14 #define SIS_TLBCNTRL 0x97 15 #define SIS_TLBFLUSH 0x98 16 17 #define PCI_DEVICE_ID_SI_662 0x0662 18 #define PCI_DEVICE_ID_SI_671 0x0671 19 20 static bool agp_sis_force_delay = 0; 21 static int agp_sis_agp_spec = -1; 22 23 static int sis_fetch_size(void) 24 { 25 u8 temp_size; 26 int i; 27 struct aper_size_info_8 *values; 28 29 pci_read_config_byte(agp_bridge->dev, SIS_APSIZE, &temp_size); 30 values = A_SIZE_8(agp_bridge->driver->aperture_sizes); 31 for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) { 32 if ((temp_size == values[i].size_value) || 33 ((temp_size & ~(0x07)) == 34 (values[i].size_value & ~(0x07)))) { 35 agp_bridge->previous_size = 36 agp_bridge->current_size = (void *) (values + i); 37 38 agp_bridge->aperture_size_idx = i; 39 return values[i].size; 40 } 41 } 42 43 return 0; 44 } 45 46 static void sis_tlbflush(struct agp_memory *mem) 47 { 48 pci_write_config_byte(agp_bridge->dev, SIS_TLBFLUSH, 0x02); 49 } 50 51 static int sis_configure(void) 52 { 53 u32 temp; 54 struct aper_size_info_8 *current_size; 55 56 current_size = A_SIZE_8(agp_bridge->current_size); 57 pci_write_config_byte(agp_bridge->dev, SIS_TLBCNTRL, 0x05); 58 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp); 59 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK); 60 pci_write_config_dword(agp_bridge->dev, SIS_ATTBASE, 61 agp_bridge->gatt_bus_addr); 62 pci_write_config_byte(agp_bridge->dev, SIS_APSIZE, 63 current_size->size_value); 64 return 0; 65 } 66 67 static void sis_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, SIS_APSIZE, 73 (previous_size->size_value & ~(0x03))); 74 } 75 76 static void sis_delayed_enable(struct agp_bridge_data *bridge, u32 mode) 77 { 78 struct pci_dev *device = NULL; 79 u32 command; 80 int rate; 81 82 dev_info(&agp_bridge->dev->dev, "AGP %d.%d bridge\n", 83 agp_bridge->major_version, agp_bridge->minor_version); 84 85 pci_read_config_dword(agp_bridge->dev, agp_bridge->capndx + PCI_AGP_STATUS, &command); 86 command = agp_collect_device_status(bridge, mode, command); 87 command |= AGPSTAT_AGP_ENABLE; 88 rate = (command & 0x7) << 2; 89 90 for_each_pci_dev(device) { 91 u8 agp = pci_find_capability(device, PCI_CAP_ID_AGP); 92 if (!agp) 93 continue; 94 95 dev_info(&agp_bridge->dev->dev, "putting AGP V3 device at %s into %dx mode\n", 96 pci_name(device), rate); 97 98 pci_write_config_dword(device, agp + PCI_AGP_COMMAND, command); 99 100 /* 101 * Weird: on some sis chipsets any rate change in the target 102 * command register triggers a 5ms screwup during which the master 103 * cannot be configured 104 */ 105 if (device->device == bridge->dev->device) { 106 dev_info(&agp_bridge->dev->dev, "SiS delay workaround: giving bridge time to recover\n"); 107 msleep(10); 108 } 109 } 110 } 111 112 static const struct aper_size_info_8 sis_generic_sizes[7] = 113 { 114 {256, 65536, 6, 99}, 115 {128, 32768, 5, 83}, 116 {64, 16384, 4, 67}, 117 {32, 8192, 3, 51}, 118 {16, 4096, 2, 35}, 119 {8, 2048, 1, 19}, 120 {4, 1024, 0, 3} 121 }; 122 123 static struct agp_bridge_driver sis_driver = { 124 .owner = THIS_MODULE, 125 .aperture_sizes = sis_generic_sizes, 126 .size_type = U8_APER_SIZE, 127 .num_aperture_sizes = 7, 128 .needs_scratch_page = true, 129 .configure = sis_configure, 130 .fetch_size = sis_fetch_size, 131 .cleanup = sis_cleanup, 132 .tlb_flush = sis_tlbflush, 133 .mask_memory = agp_generic_mask_memory, 134 .masks = NULL, 135 .agp_enable = agp_generic_enable, 136 .cache_flush = global_cache_flush, 137 .create_gatt_table = agp_generic_create_gatt_table, 138 .free_gatt_table = agp_generic_free_gatt_table, 139 .insert_memory = agp_generic_insert_memory, 140 .remove_memory = agp_generic_remove_memory, 141 .alloc_by_type = agp_generic_alloc_by_type, 142 .free_by_type = agp_generic_free_by_type, 143 .agp_alloc_page = agp_generic_alloc_page, 144 .agp_alloc_pages = agp_generic_alloc_pages, 145 .agp_destroy_page = agp_generic_destroy_page, 146 .agp_destroy_pages = agp_generic_destroy_pages, 147 .agp_type_to_mask_type = agp_generic_type_to_mask_type, 148 }; 149 150 // chipsets that require the 'delay hack' 151 static int sis_broken_chipsets[] = { 152 PCI_DEVICE_ID_SI_648, 153 PCI_DEVICE_ID_SI_746, 154 0 // terminator 155 }; 156 157 static void sis_get_driver(struct agp_bridge_data *bridge) 158 { 159 int i; 160 161 for (i=0; sis_broken_chipsets[i]!=0; ++i) 162 if (bridge->dev->device==sis_broken_chipsets[i]) 163 break; 164 165 if (sis_broken_chipsets[i] || agp_sis_force_delay) 166 sis_driver.agp_enable=sis_delayed_enable; 167 168 // sis chipsets that indicate less than agp3.5 169 // are not actually fully agp3 compliant 170 if ((agp_bridge->major_version == 3 && agp_bridge->minor_version >= 5 171 && agp_sis_agp_spec!=0) || agp_sis_agp_spec==1) { 172 sis_driver.aperture_sizes = agp3_generic_sizes; 173 sis_driver.size_type = U16_APER_SIZE; 174 sis_driver.num_aperture_sizes = AGP_GENERIC_SIZES_ENTRIES; 175 sis_driver.configure = agp3_generic_configure; 176 sis_driver.fetch_size = agp3_generic_fetch_size; 177 sis_driver.cleanup = agp3_generic_cleanup; 178 sis_driver.tlb_flush = agp3_generic_tlbflush; 179 } 180 } 181 182 183 static int agp_sis_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 184 { 185 struct agp_bridge_data *bridge; 186 u8 cap_ptr; 187 188 cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP); 189 if (!cap_ptr) 190 return -ENODEV; 191 192 193 dev_info(&pdev->dev, "SiS chipset [%04x/%04x]\n", 194 pdev->vendor, pdev->device); 195 bridge = agp_alloc_bridge(); 196 if (!bridge) 197 return -ENOMEM; 198 199 bridge->driver = &sis_driver; 200 bridge->dev = pdev; 201 bridge->capndx = cap_ptr; 202 203 get_agp_version(bridge); 204 205 /* Fill in the mode register */ 206 pci_read_config_dword(pdev, bridge->capndx+PCI_AGP_STATUS, &bridge->mode); 207 sis_get_driver(bridge); 208 209 pci_set_drvdata(pdev, bridge); 210 return agp_add_bridge(bridge); 211 } 212 213 static void agp_sis_remove(struct pci_dev *pdev) 214 { 215 struct agp_bridge_data *bridge = pci_get_drvdata(pdev); 216 217 agp_remove_bridge(bridge); 218 agp_put_bridge(bridge); 219 } 220 221 #ifdef CONFIG_PM 222 223 static int agp_sis_suspend(struct pci_dev *pdev, pm_message_t state) 224 { 225 pci_save_state(pdev); 226 pci_set_power_state(pdev, pci_choose_state(pdev, state)); 227 228 return 0; 229 } 230 231 static int agp_sis_resume(struct pci_dev *pdev) 232 { 233 pci_set_power_state(pdev, PCI_D0); 234 pci_restore_state(pdev); 235 236 return sis_driver.configure(); 237 } 238 239 #endif /* CONFIG_PM */ 240 241 static struct pci_device_id agp_sis_pci_table[] = { 242 { 243 .class = (PCI_CLASS_BRIDGE_HOST << 8), 244 .class_mask = ~0, 245 .vendor = PCI_VENDOR_ID_SI, 246 .device = PCI_DEVICE_ID_SI_5591, 247 .subvendor = PCI_ANY_ID, 248 .subdevice = PCI_ANY_ID, 249 }, 250 { 251 .class = (PCI_CLASS_BRIDGE_HOST << 8), 252 .class_mask = ~0, 253 .vendor = PCI_VENDOR_ID_SI, 254 .device = PCI_DEVICE_ID_SI_530, 255 .subvendor = PCI_ANY_ID, 256 .subdevice = PCI_ANY_ID, 257 }, 258 { 259 .class = (PCI_CLASS_BRIDGE_HOST << 8), 260 .class_mask = ~0, 261 .vendor = PCI_VENDOR_ID_SI, 262 .device = PCI_DEVICE_ID_SI_540, 263 .subvendor = PCI_ANY_ID, 264 .subdevice = PCI_ANY_ID, 265 }, 266 { 267 .class = (PCI_CLASS_BRIDGE_HOST << 8), 268 .class_mask = ~0, 269 .vendor = PCI_VENDOR_ID_SI, 270 .device = PCI_DEVICE_ID_SI_550, 271 .subvendor = PCI_ANY_ID, 272 .subdevice = PCI_ANY_ID, 273 }, 274 { 275 .class = (PCI_CLASS_BRIDGE_HOST << 8), 276 .class_mask = ~0, 277 .vendor = PCI_VENDOR_ID_SI, 278 .device = PCI_DEVICE_ID_SI_620, 279 .subvendor = PCI_ANY_ID, 280 .subdevice = PCI_ANY_ID, 281 }, 282 { 283 .class = (PCI_CLASS_BRIDGE_HOST << 8), 284 .class_mask = ~0, 285 .vendor = PCI_VENDOR_ID_SI, 286 .device = PCI_DEVICE_ID_SI_630, 287 .subvendor = PCI_ANY_ID, 288 .subdevice = PCI_ANY_ID, 289 }, 290 { 291 .class = (PCI_CLASS_BRIDGE_HOST << 8), 292 .class_mask = ~0, 293 .vendor = PCI_VENDOR_ID_SI, 294 .device = PCI_DEVICE_ID_SI_635, 295 .subvendor = PCI_ANY_ID, 296 .subdevice = PCI_ANY_ID, 297 }, 298 { 299 .class = (PCI_CLASS_BRIDGE_HOST << 8), 300 .class_mask = ~0, 301 .vendor = PCI_VENDOR_ID_SI, 302 .device = PCI_DEVICE_ID_SI_645, 303 .subvendor = PCI_ANY_ID, 304 .subdevice = PCI_ANY_ID, 305 }, 306 { 307 .class = (PCI_CLASS_BRIDGE_HOST << 8), 308 .class_mask = ~0, 309 .vendor = PCI_VENDOR_ID_SI, 310 .device = PCI_DEVICE_ID_SI_646, 311 .subvendor = PCI_ANY_ID, 312 .subdevice = PCI_ANY_ID, 313 }, 314 { 315 .class = (PCI_CLASS_BRIDGE_HOST << 8), 316 .class_mask = ~0, 317 .vendor = PCI_VENDOR_ID_SI, 318 .device = PCI_DEVICE_ID_SI_648, 319 .subvendor = PCI_ANY_ID, 320 .subdevice = PCI_ANY_ID, 321 }, 322 { 323 .class = (PCI_CLASS_BRIDGE_HOST << 8), 324 .class_mask = ~0, 325 .vendor = PCI_VENDOR_ID_SI, 326 .device = PCI_DEVICE_ID_SI_650, 327 .subvendor = PCI_ANY_ID, 328 .subdevice = PCI_ANY_ID, 329 }, 330 { 331 .class = (PCI_CLASS_BRIDGE_HOST << 8), 332 .class_mask = ~0, 333 .vendor = PCI_VENDOR_ID_SI, 334 .device = PCI_DEVICE_ID_SI_651, 335 .subvendor = PCI_ANY_ID, 336 .subdevice = PCI_ANY_ID, 337 }, 338 { 339 .class = (PCI_CLASS_BRIDGE_HOST << 8), 340 .class_mask = ~0, 341 .vendor = PCI_VENDOR_ID_SI, 342 .device = PCI_DEVICE_ID_SI_655, 343 .subvendor = PCI_ANY_ID, 344 .subdevice = PCI_ANY_ID, 345 }, 346 { 347 .class = (PCI_CLASS_BRIDGE_HOST << 8), 348 .class_mask = ~0, 349 .vendor = PCI_VENDOR_ID_SI, 350 .device = PCI_DEVICE_ID_SI_661, 351 .subvendor = PCI_ANY_ID, 352 .subdevice = PCI_ANY_ID, 353 }, 354 { 355 .class = (PCI_CLASS_BRIDGE_HOST << 8), 356 .class_mask = ~0, 357 .vendor = PCI_VENDOR_ID_SI, 358 .device = PCI_DEVICE_ID_SI_662, 359 .subvendor = PCI_ANY_ID, 360 .subdevice = PCI_ANY_ID, 361 }, 362 { 363 .class = (PCI_CLASS_BRIDGE_HOST << 8), 364 .class_mask = ~0, 365 .vendor = PCI_VENDOR_ID_SI, 366 .device = PCI_DEVICE_ID_SI_671, 367 .subvendor = PCI_ANY_ID, 368 .subdevice = PCI_ANY_ID, 369 }, 370 { 371 .class = (PCI_CLASS_BRIDGE_HOST << 8), 372 .class_mask = ~0, 373 .vendor = PCI_VENDOR_ID_SI, 374 .device = PCI_DEVICE_ID_SI_730, 375 .subvendor = PCI_ANY_ID, 376 .subdevice = PCI_ANY_ID, 377 }, 378 { 379 .class = (PCI_CLASS_BRIDGE_HOST << 8), 380 .class_mask = ~0, 381 .vendor = PCI_VENDOR_ID_SI, 382 .device = PCI_DEVICE_ID_SI_735, 383 .subvendor = PCI_ANY_ID, 384 .subdevice = PCI_ANY_ID, 385 }, 386 { 387 .class = (PCI_CLASS_BRIDGE_HOST << 8), 388 .class_mask = ~0, 389 .vendor = PCI_VENDOR_ID_SI, 390 .device = PCI_DEVICE_ID_SI_740, 391 .subvendor = PCI_ANY_ID, 392 .subdevice = PCI_ANY_ID, 393 }, 394 { 395 .class = (PCI_CLASS_BRIDGE_HOST << 8), 396 .class_mask = ~0, 397 .vendor = PCI_VENDOR_ID_SI, 398 .device = PCI_DEVICE_ID_SI_741, 399 .subvendor = PCI_ANY_ID, 400 .subdevice = PCI_ANY_ID, 401 }, 402 { 403 .class = (PCI_CLASS_BRIDGE_HOST << 8), 404 .class_mask = ~0, 405 .vendor = PCI_VENDOR_ID_SI, 406 .device = PCI_DEVICE_ID_SI_745, 407 .subvendor = PCI_ANY_ID, 408 .subdevice = PCI_ANY_ID, 409 }, 410 { 411 .class = (PCI_CLASS_BRIDGE_HOST << 8), 412 .class_mask = ~0, 413 .vendor = PCI_VENDOR_ID_SI, 414 .device = PCI_DEVICE_ID_SI_746, 415 .subvendor = PCI_ANY_ID, 416 .subdevice = PCI_ANY_ID, 417 }, 418 { } 419 }; 420 421 MODULE_DEVICE_TABLE(pci, agp_sis_pci_table); 422 423 static struct pci_driver agp_sis_pci_driver = { 424 .name = "agpgart-sis", 425 .id_table = agp_sis_pci_table, 426 .probe = agp_sis_probe, 427 .remove = agp_sis_remove, 428 #ifdef CONFIG_PM 429 .suspend = agp_sis_suspend, 430 .resume = agp_sis_resume, 431 #endif 432 }; 433 434 static int __init agp_sis_init(void) 435 { 436 if (agp_off) 437 return -EINVAL; 438 return pci_register_driver(&agp_sis_pci_driver); 439 } 440 441 static void __exit agp_sis_cleanup(void) 442 { 443 pci_unregister_driver(&agp_sis_pci_driver); 444 } 445 446 module_init(agp_sis_init); 447 module_exit(agp_sis_cleanup); 448 449 module_param(agp_sis_force_delay, bool, 0); 450 MODULE_PARM_DESC(agp_sis_force_delay,"forces sis delay hack"); 451 module_param(agp_sis_agp_spec, int, 0); 452 MODULE_PARM_DESC(agp_sis_agp_spec,"0=force sis init, 1=force generic agp3 init, default: autodetect"); 453 MODULE_LICENSE("GPL and additional rights"); 454