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 20static bool agp_sis_force_delay = 0; 21static int agp_sis_agp_spec = -1; 22 23static 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 46static void sis_tlbflush(struct agp_memory *mem) 47{ 48 pci_write_config_byte(agp_bridge->dev, SIS_TLBFLUSH, 0x02); 49} 50 51static int sis_configure(void) 52{ 53 struct aper_size_info_8 *current_size; 54 55 current_size = A_SIZE_8(agp_bridge->current_size); 56 pci_write_config_byte(agp_bridge->dev, SIS_TLBCNTRL, 0x05); 57 agp_bridge->gart_bus_addr = pci_bus_address(agp_bridge->dev, 58 AGP_APERTURE_BAR); 59 pci_write_config_dword(agp_bridge->dev, SIS_ATTBASE, 60 agp_bridge->gatt_bus_addr); 61 pci_write_config_byte(agp_bridge->dev, SIS_APSIZE, 62 current_size->size_value); 63 return 0; 64} 65 66static void sis_cleanup(void) 67{ 68 struct aper_size_info_8 *previous_size; 69 70 previous_size = A_SIZE_8(agp_bridge->previous_size); 71 pci_write_config_byte(agp_bridge->dev, SIS_APSIZE, 72 (previous_size->size_value & ~(0x03))); 73} 74 75static void sis_delayed_enable(struct agp_bridge_data *bridge, u32 mode) 76{ 77 struct pci_dev *device = NULL; 78 u32 command; 79 int rate; 80 81 dev_info(&agp_bridge->dev->dev, "AGP %d.%d bridge\n", 82 agp_bridge->major_version, agp_bridge->minor_version); 83 84 pci_read_config_dword(agp_bridge->dev, agp_bridge->capndx + PCI_AGP_STATUS, &command); 85 command = agp_collect_device_status(bridge, mode, command); 86 command |= AGPSTAT_AGP_ENABLE; 87 rate = (command & 0x7) << 2; 88 89 for_each_pci_dev(device) { 90 u8 agp = pci_find_capability(device, PCI_CAP_ID_AGP); 91 if (!agp) 92 continue; 93 94 dev_info(&agp_bridge->dev->dev, "putting AGP V3 device at %s into %dx mode\n", 95 pci_name(device), rate); 96 97 pci_write_config_dword(device, agp + PCI_AGP_COMMAND, command); 98 99 /* 100 * Weird: on some sis chipsets any rate change in the target 101 * command register triggers a 5ms screwup during which the master 102 * cannot be configured 103 */ 104 if (device->device == bridge->dev->device) { 105 dev_info(&agp_bridge->dev->dev, "SiS delay workaround: giving bridge time to recover\n"); 106 msleep(10); 107 } 108 } 109} 110 111static const struct aper_size_info_8 sis_generic_sizes[7] = 112{ 113 {256, 65536, 6, 99}, 114 {128, 32768, 5, 83}, 115 {64, 16384, 4, 67}, 116 {32, 8192, 3, 51}, 117 {16, 4096, 2, 35}, 118 {8, 2048, 1, 19}, 119 {4, 1024, 0, 3} 120}; 121 122static struct agp_bridge_driver sis_driver = { 123 .owner = THIS_MODULE, 124 .aperture_sizes = sis_generic_sizes, 125 .size_type = U8_APER_SIZE, 126 .num_aperture_sizes = 7, 127 .needs_scratch_page = true, 128 .configure = sis_configure, 129 .fetch_size = sis_fetch_size, 130 .cleanup = sis_cleanup, 131 .tlb_flush = sis_tlbflush, 132 .mask_memory = agp_generic_mask_memory, 133 .masks = NULL, 134 .agp_enable = agp_generic_enable, 135 .cache_flush = global_cache_flush, 136 .create_gatt_table = agp_generic_create_gatt_table, 137 .free_gatt_table = agp_generic_free_gatt_table, 138 .insert_memory = agp_generic_insert_memory, 139 .remove_memory = agp_generic_remove_memory, 140 .alloc_by_type = agp_generic_alloc_by_type, 141 .free_by_type = agp_generic_free_by_type, 142 .agp_alloc_page = agp_generic_alloc_page, 143 .agp_alloc_pages = agp_generic_alloc_pages, 144 .agp_destroy_page = agp_generic_destroy_page, 145 .agp_destroy_pages = agp_generic_destroy_pages, 146 .agp_type_to_mask_type = agp_generic_type_to_mask_type, 147}; 148 149// chipsets that require the 'delay hack' 150static int sis_broken_chipsets[] = { 151 PCI_DEVICE_ID_SI_648, 152 PCI_DEVICE_ID_SI_746, 153 0 // terminator 154}; 155 156static void sis_get_driver(struct agp_bridge_data *bridge) 157{ 158 int i; 159 160 for (i=0; sis_broken_chipsets[i]!=0; ++i) 161 if (bridge->dev->device==sis_broken_chipsets[i]) 162 break; 163 164 if (sis_broken_chipsets[i] || agp_sis_force_delay) 165 sis_driver.agp_enable=sis_delayed_enable; 166 167 // sis chipsets that indicate less than agp3.5 168 // are not actually fully agp3 compliant 169 if ((agp_bridge->major_version == 3 && agp_bridge->minor_version >= 5 170 && agp_sis_agp_spec!=0) || agp_sis_agp_spec==1) { 171 sis_driver.aperture_sizes = agp3_generic_sizes; 172 sis_driver.size_type = U16_APER_SIZE; 173 sis_driver.num_aperture_sizes = AGP_GENERIC_SIZES_ENTRIES; 174 sis_driver.configure = agp3_generic_configure; 175 sis_driver.fetch_size = agp3_generic_fetch_size; 176 sis_driver.cleanup = agp3_generic_cleanup; 177 sis_driver.tlb_flush = agp3_generic_tlbflush; 178 } 179} 180 181 182static int agp_sis_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 183{ 184 struct agp_bridge_data *bridge; 185 u8 cap_ptr; 186 187 cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP); 188 if (!cap_ptr) 189 return -ENODEV; 190 191 192 dev_info(&pdev->dev, "SiS chipset [%04x/%04x]\n", 193 pdev->vendor, pdev->device); 194 bridge = agp_alloc_bridge(); 195 if (!bridge) 196 return -ENOMEM; 197 198 bridge->driver = &sis_driver; 199 bridge->dev = pdev; 200 bridge->capndx = cap_ptr; 201 202 get_agp_version(bridge); 203 204 /* Fill in the mode register */ 205 pci_read_config_dword(pdev, bridge->capndx+PCI_AGP_STATUS, &bridge->mode); 206 sis_get_driver(bridge); 207 208 pci_set_drvdata(pdev, bridge); 209 return agp_add_bridge(bridge); 210} 211 212static void agp_sis_remove(struct pci_dev *pdev) 213{ 214 struct agp_bridge_data *bridge = pci_get_drvdata(pdev); 215 216 agp_remove_bridge(bridge); 217 agp_put_bridge(bridge); 218} 219 220static int agp_sis_resume(__attribute__((unused)) struct device *dev) 221{ 222 return sis_driver.configure(); 223} 224 225static const struct pci_device_id agp_sis_pci_table[] = { 226 { 227 .class = (PCI_CLASS_BRIDGE_HOST << 8), 228 .class_mask = ~0, 229 .vendor = PCI_VENDOR_ID_SI, 230 .device = PCI_DEVICE_ID_SI_5591, 231 .subvendor = PCI_ANY_ID, 232 .subdevice = PCI_ANY_ID, 233 }, 234 { 235 .class = (PCI_CLASS_BRIDGE_HOST << 8), 236 .class_mask = ~0, 237 .vendor = PCI_VENDOR_ID_SI, 238 .device = PCI_DEVICE_ID_SI_530, 239 .subvendor = PCI_ANY_ID, 240 .subdevice = PCI_ANY_ID, 241 }, 242 { 243 .class = (PCI_CLASS_BRIDGE_HOST << 8), 244 .class_mask = ~0, 245 .vendor = PCI_VENDOR_ID_SI, 246 .device = PCI_DEVICE_ID_SI_540, 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_550, 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_620, 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_630, 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_635, 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_645, 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_646, 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_648, 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_650, 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_651, 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_655, 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_661, 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_662, 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_671, 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_730, 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_735, 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_740, 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_741, 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_745, 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_746, 399 .subvendor = PCI_ANY_ID, 400 .subdevice = PCI_ANY_ID, 401 }, 402 { } 403}; 404 405MODULE_DEVICE_TABLE(pci, agp_sis_pci_table); 406 407static DEFINE_SIMPLE_DEV_PM_OPS(agp_sis_pm_ops, NULL, agp_sis_resume); 408 409static struct pci_driver agp_sis_pci_driver = { 410 .name = "agpgart-sis", 411 .id_table = agp_sis_pci_table, 412 .probe = agp_sis_probe, 413 .remove = agp_sis_remove, 414 .driver.pm = &agp_sis_pm_ops, 415}; 416 417static int __init agp_sis_init(void) 418{ 419 if (agp_off) 420 return -EINVAL; 421 return pci_register_driver(&agp_sis_pci_driver); 422} 423 424static void __exit agp_sis_cleanup(void) 425{ 426 pci_unregister_driver(&agp_sis_pci_driver); 427} 428 429module_init(agp_sis_init); 430module_exit(agp_sis_cleanup); 431 432module_param(agp_sis_force_delay, bool, 0); 433MODULE_PARM_DESC(agp_sis_force_delay,"forces sis delay hack"); 434module_param(agp_sis_agp_spec, int, 0); 435MODULE_PARM_DESC(agp_sis_agp_spec,"0=force sis init, 1=force generic agp3 init, default: autodetect"); 436MODULE_LICENSE("GPL and additional rights"); 437