1 /* 2 * Copyright 2008 Advanced Micro Devices, Inc. 3 * Copyright 2008 Red Hat Inc. 4 * Copyright 2009 Jerome Glisse. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: Dave Airlie 25 * Alex Deucher 26 * Jerome Glisse 27 */ 28 #include <drm/drmP.h> 29 #include "radeon_reg.h" 30 #include "radeon.h" 31 #include "atom.h" 32 33 #include <linux/vga_switcheroo.h> 34 #include <linux/slab.h> 35 #include <linux/acpi.h> 36 /* 37 * BIOS. 38 */ 39 40 /* If you boot an IGP board with a discrete card as the primary, 41 * the IGP rom is not accessible via the rom bar as the IGP rom is 42 * part of the system bios. On boot, the system bios puts a 43 * copy of the igp rom at the start of vram if a discrete card is 44 * present. 45 */ 46 static bool igp_read_bios_from_vram(struct radeon_device *rdev) 47 { 48 uint8_t __iomem *bios; 49 resource_size_t vram_base; 50 resource_size_t size = 256 * 1024; /* ??? */ 51 52 if (!(rdev->flags & RADEON_IS_IGP)) 53 if (!radeon_card_posted(rdev)) 54 return false; 55 56 rdev->bios = NULL; 57 vram_base = pci_resource_start(rdev->pdev, 0); 58 bios = ioremap(vram_base, size); 59 if (!bios) { 60 return false; 61 } 62 63 if (size == 0 || bios[0] != 0x55 || bios[1] != 0xaa) { 64 iounmap(bios); 65 return false; 66 } 67 rdev->bios = kmalloc(size, GFP_KERNEL); 68 if (rdev->bios == NULL) { 69 iounmap(bios); 70 return false; 71 } 72 memcpy_fromio(rdev->bios, bios, size); 73 iounmap(bios); 74 return true; 75 } 76 77 static bool radeon_read_bios(struct radeon_device *rdev) 78 { 79 uint8_t __iomem *bios, val1, val2; 80 size_t size; 81 82 rdev->bios = NULL; 83 /* XXX: some cards may return 0 for rom size? ddx has a workaround */ 84 bios = pci_map_rom(rdev->pdev, &size); 85 if (!bios) { 86 return false; 87 } 88 89 val1 = readb(&bios[0]); 90 val2 = readb(&bios[1]); 91 92 if (size == 0 || val1 != 0x55 || val2 != 0xaa) { 93 pci_unmap_rom(rdev->pdev, bios); 94 return false; 95 } 96 rdev->bios = kzalloc(size, GFP_KERNEL); 97 if (rdev->bios == NULL) { 98 pci_unmap_rom(rdev->pdev, bios); 99 return false; 100 } 101 memcpy_fromio(rdev->bios, bios, size); 102 pci_unmap_rom(rdev->pdev, bios); 103 return true; 104 } 105 106 static bool radeon_read_platform_bios(struct radeon_device *rdev) 107 { 108 uint8_t __iomem *bios; 109 size_t size; 110 111 rdev->bios = NULL; 112 113 bios = pci_platform_rom(rdev->pdev, &size); 114 if (!bios) { 115 return false; 116 } 117 118 if (size == 0 || bios[0] != 0x55 || bios[1] != 0xaa) { 119 return false; 120 } 121 rdev->bios = kmemdup(bios, size, GFP_KERNEL); 122 if (rdev->bios == NULL) { 123 return false; 124 } 125 126 return true; 127 } 128 129 #ifdef CONFIG_ACPI 130 /* ATRM is used to get the BIOS on the discrete cards in 131 * dual-gpu systems. 132 */ 133 /* retrieve the ROM in 4k blocks */ 134 #define ATRM_BIOS_PAGE 4096 135 /** 136 * radeon_atrm_call - fetch a chunk of the vbios 137 * 138 * @atrm_handle: acpi ATRM handle 139 * @bios: vbios image pointer 140 * @offset: offset of vbios image data to fetch 141 * @len: length of vbios image data to fetch 142 * 143 * Executes ATRM to fetch a chunk of the discrete 144 * vbios image on PX systems (all asics). 145 * Returns the length of the buffer fetched. 146 */ 147 static int radeon_atrm_call(acpi_handle atrm_handle, uint8_t *bios, 148 int offset, int len) 149 { 150 acpi_status status; 151 union acpi_object atrm_arg_elements[2], *obj; 152 struct acpi_object_list atrm_arg; 153 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL}; 154 155 atrm_arg.count = 2; 156 atrm_arg.pointer = &atrm_arg_elements[0]; 157 158 atrm_arg_elements[0].type = ACPI_TYPE_INTEGER; 159 atrm_arg_elements[0].integer.value = offset; 160 161 atrm_arg_elements[1].type = ACPI_TYPE_INTEGER; 162 atrm_arg_elements[1].integer.value = len; 163 164 status = acpi_evaluate_object(atrm_handle, NULL, &atrm_arg, &buffer); 165 if (ACPI_FAILURE(status)) { 166 printk("failed to evaluate ATRM got %s\n", acpi_format_exception(status)); 167 return -ENODEV; 168 } 169 170 obj = (union acpi_object *)buffer.pointer; 171 memcpy(bios+offset, obj->buffer.pointer, obj->buffer.length); 172 len = obj->buffer.length; 173 kfree(buffer.pointer); 174 return len; 175 } 176 177 static bool radeon_atrm_get_bios(struct radeon_device *rdev) 178 { 179 int ret; 180 int size = 256 * 1024; 181 int i; 182 struct pci_dev *pdev = NULL; 183 acpi_handle dhandle, atrm_handle; 184 acpi_status status; 185 bool found = false; 186 187 /* ATRM is for the discrete card only */ 188 if (rdev->flags & RADEON_IS_IGP) 189 return false; 190 191 while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) { 192 dhandle = ACPI_HANDLE(&pdev->dev); 193 if (!dhandle) 194 continue; 195 196 status = acpi_get_handle(dhandle, "ATRM", &atrm_handle); 197 if (!ACPI_FAILURE(status)) { 198 found = true; 199 break; 200 } 201 } 202 203 if (!found) { 204 while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_OTHER << 8, pdev)) != NULL) { 205 dhandle = ACPI_HANDLE(&pdev->dev); 206 if (!dhandle) 207 continue; 208 209 status = acpi_get_handle(dhandle, "ATRM", &atrm_handle); 210 if (!ACPI_FAILURE(status)) { 211 found = true; 212 break; 213 } 214 } 215 } 216 217 if (!found) 218 return false; 219 220 rdev->bios = kmalloc(size, GFP_KERNEL); 221 if (!rdev->bios) { 222 DRM_ERROR("Unable to allocate bios\n"); 223 return false; 224 } 225 226 for (i = 0; i < size / ATRM_BIOS_PAGE; i++) { 227 ret = radeon_atrm_call(atrm_handle, 228 rdev->bios, 229 (i * ATRM_BIOS_PAGE), 230 ATRM_BIOS_PAGE); 231 if (ret < ATRM_BIOS_PAGE) 232 break; 233 } 234 235 if (i == 0 || rdev->bios[0] != 0x55 || rdev->bios[1] != 0xaa) { 236 kfree(rdev->bios); 237 return false; 238 } 239 return true; 240 } 241 #else 242 static inline bool radeon_atrm_get_bios(struct radeon_device *rdev) 243 { 244 return false; 245 } 246 #endif 247 248 static bool ni_read_disabled_bios(struct radeon_device *rdev) 249 { 250 u32 bus_cntl; 251 u32 d1vga_control; 252 u32 d2vga_control; 253 u32 vga_render_control; 254 u32 rom_cntl; 255 bool r; 256 257 bus_cntl = RREG32(R600_BUS_CNTL); 258 d1vga_control = RREG32(AVIVO_D1VGA_CONTROL); 259 d2vga_control = RREG32(AVIVO_D2VGA_CONTROL); 260 vga_render_control = RREG32(AVIVO_VGA_RENDER_CONTROL); 261 rom_cntl = RREG32(R600_ROM_CNTL); 262 263 /* enable the rom */ 264 WREG32(R600_BUS_CNTL, (bus_cntl & ~R600_BIOS_ROM_DIS)); 265 if (!ASIC_IS_NODCE(rdev)) { 266 /* Disable VGA mode */ 267 WREG32(AVIVO_D1VGA_CONTROL, 268 (d1vga_control & ~(AVIVO_DVGA_CONTROL_MODE_ENABLE | 269 AVIVO_DVGA_CONTROL_TIMING_SELECT))); 270 WREG32(AVIVO_D2VGA_CONTROL, 271 (d2vga_control & ~(AVIVO_DVGA_CONTROL_MODE_ENABLE | 272 AVIVO_DVGA_CONTROL_TIMING_SELECT))); 273 WREG32(AVIVO_VGA_RENDER_CONTROL, 274 (vga_render_control & ~AVIVO_VGA_VSTATUS_CNTL_MASK)); 275 } 276 WREG32(R600_ROM_CNTL, rom_cntl | R600_SCK_OVERWRITE); 277 278 r = radeon_read_bios(rdev); 279 280 /* restore regs */ 281 WREG32(R600_BUS_CNTL, bus_cntl); 282 if (!ASIC_IS_NODCE(rdev)) { 283 WREG32(AVIVO_D1VGA_CONTROL, d1vga_control); 284 WREG32(AVIVO_D2VGA_CONTROL, d2vga_control); 285 WREG32(AVIVO_VGA_RENDER_CONTROL, vga_render_control); 286 } 287 WREG32(R600_ROM_CNTL, rom_cntl); 288 return r; 289 } 290 291 static bool r700_read_disabled_bios(struct radeon_device *rdev) 292 { 293 uint32_t viph_control; 294 uint32_t bus_cntl; 295 uint32_t d1vga_control; 296 uint32_t d2vga_control; 297 uint32_t vga_render_control; 298 uint32_t rom_cntl; 299 uint32_t cg_spll_func_cntl = 0; 300 uint32_t cg_spll_status; 301 bool r; 302 303 viph_control = RREG32(RADEON_VIPH_CONTROL); 304 bus_cntl = RREG32(R600_BUS_CNTL); 305 d1vga_control = RREG32(AVIVO_D1VGA_CONTROL); 306 d2vga_control = RREG32(AVIVO_D2VGA_CONTROL); 307 vga_render_control = RREG32(AVIVO_VGA_RENDER_CONTROL); 308 rom_cntl = RREG32(R600_ROM_CNTL); 309 310 /* disable VIP */ 311 WREG32(RADEON_VIPH_CONTROL, (viph_control & ~RADEON_VIPH_EN)); 312 /* enable the rom */ 313 WREG32(R600_BUS_CNTL, (bus_cntl & ~R600_BIOS_ROM_DIS)); 314 /* Disable VGA mode */ 315 WREG32(AVIVO_D1VGA_CONTROL, 316 (d1vga_control & ~(AVIVO_DVGA_CONTROL_MODE_ENABLE | 317 AVIVO_DVGA_CONTROL_TIMING_SELECT))); 318 WREG32(AVIVO_D2VGA_CONTROL, 319 (d2vga_control & ~(AVIVO_DVGA_CONTROL_MODE_ENABLE | 320 AVIVO_DVGA_CONTROL_TIMING_SELECT))); 321 WREG32(AVIVO_VGA_RENDER_CONTROL, 322 (vga_render_control & ~AVIVO_VGA_VSTATUS_CNTL_MASK)); 323 324 if (rdev->family == CHIP_RV730) { 325 cg_spll_func_cntl = RREG32(R600_CG_SPLL_FUNC_CNTL); 326 327 /* enable bypass mode */ 328 WREG32(R600_CG_SPLL_FUNC_CNTL, (cg_spll_func_cntl | 329 R600_SPLL_BYPASS_EN)); 330 331 /* wait for SPLL_CHG_STATUS to change to 1 */ 332 cg_spll_status = 0; 333 while (!(cg_spll_status & R600_SPLL_CHG_STATUS)) 334 cg_spll_status = RREG32(R600_CG_SPLL_STATUS); 335 336 WREG32(R600_ROM_CNTL, (rom_cntl & ~R600_SCK_OVERWRITE)); 337 } else 338 WREG32(R600_ROM_CNTL, (rom_cntl | R600_SCK_OVERWRITE)); 339 340 r = radeon_read_bios(rdev); 341 342 /* restore regs */ 343 if (rdev->family == CHIP_RV730) { 344 WREG32(R600_CG_SPLL_FUNC_CNTL, cg_spll_func_cntl); 345 346 /* wait for SPLL_CHG_STATUS to change to 1 */ 347 cg_spll_status = 0; 348 while (!(cg_spll_status & R600_SPLL_CHG_STATUS)) 349 cg_spll_status = RREG32(R600_CG_SPLL_STATUS); 350 } 351 WREG32(RADEON_VIPH_CONTROL, viph_control); 352 WREG32(R600_BUS_CNTL, bus_cntl); 353 WREG32(AVIVO_D1VGA_CONTROL, d1vga_control); 354 WREG32(AVIVO_D2VGA_CONTROL, d2vga_control); 355 WREG32(AVIVO_VGA_RENDER_CONTROL, vga_render_control); 356 WREG32(R600_ROM_CNTL, rom_cntl); 357 return r; 358 } 359 360 static bool r600_read_disabled_bios(struct radeon_device *rdev) 361 { 362 uint32_t viph_control; 363 uint32_t bus_cntl; 364 uint32_t d1vga_control; 365 uint32_t d2vga_control; 366 uint32_t vga_render_control; 367 uint32_t rom_cntl; 368 uint32_t general_pwrmgt; 369 uint32_t low_vid_lower_gpio_cntl; 370 uint32_t medium_vid_lower_gpio_cntl; 371 uint32_t high_vid_lower_gpio_cntl; 372 uint32_t ctxsw_vid_lower_gpio_cntl; 373 uint32_t lower_gpio_enable; 374 bool r; 375 376 viph_control = RREG32(RADEON_VIPH_CONTROL); 377 bus_cntl = RREG32(R600_BUS_CNTL); 378 d1vga_control = RREG32(AVIVO_D1VGA_CONTROL); 379 d2vga_control = RREG32(AVIVO_D2VGA_CONTROL); 380 vga_render_control = RREG32(AVIVO_VGA_RENDER_CONTROL); 381 rom_cntl = RREG32(R600_ROM_CNTL); 382 general_pwrmgt = RREG32(R600_GENERAL_PWRMGT); 383 low_vid_lower_gpio_cntl = RREG32(R600_LOW_VID_LOWER_GPIO_CNTL); 384 medium_vid_lower_gpio_cntl = RREG32(R600_MEDIUM_VID_LOWER_GPIO_CNTL); 385 high_vid_lower_gpio_cntl = RREG32(R600_HIGH_VID_LOWER_GPIO_CNTL); 386 ctxsw_vid_lower_gpio_cntl = RREG32(R600_CTXSW_VID_LOWER_GPIO_CNTL); 387 lower_gpio_enable = RREG32(R600_LOWER_GPIO_ENABLE); 388 389 /* disable VIP */ 390 WREG32(RADEON_VIPH_CONTROL, (viph_control & ~RADEON_VIPH_EN)); 391 /* enable the rom */ 392 WREG32(R600_BUS_CNTL, (bus_cntl & ~R600_BIOS_ROM_DIS)); 393 /* Disable VGA mode */ 394 WREG32(AVIVO_D1VGA_CONTROL, 395 (d1vga_control & ~(AVIVO_DVGA_CONTROL_MODE_ENABLE | 396 AVIVO_DVGA_CONTROL_TIMING_SELECT))); 397 WREG32(AVIVO_D2VGA_CONTROL, 398 (d2vga_control & ~(AVIVO_DVGA_CONTROL_MODE_ENABLE | 399 AVIVO_DVGA_CONTROL_TIMING_SELECT))); 400 WREG32(AVIVO_VGA_RENDER_CONTROL, 401 (vga_render_control & ~AVIVO_VGA_VSTATUS_CNTL_MASK)); 402 403 WREG32(R600_ROM_CNTL, 404 ((rom_cntl & ~R600_SCK_PRESCALE_CRYSTAL_CLK_MASK) | 405 (1 << R600_SCK_PRESCALE_CRYSTAL_CLK_SHIFT) | 406 R600_SCK_OVERWRITE)); 407 408 WREG32(R600_GENERAL_PWRMGT, (general_pwrmgt & ~R600_OPEN_DRAIN_PADS)); 409 WREG32(R600_LOW_VID_LOWER_GPIO_CNTL, 410 (low_vid_lower_gpio_cntl & ~0x400)); 411 WREG32(R600_MEDIUM_VID_LOWER_GPIO_CNTL, 412 (medium_vid_lower_gpio_cntl & ~0x400)); 413 WREG32(R600_HIGH_VID_LOWER_GPIO_CNTL, 414 (high_vid_lower_gpio_cntl & ~0x400)); 415 WREG32(R600_CTXSW_VID_LOWER_GPIO_CNTL, 416 (ctxsw_vid_lower_gpio_cntl & ~0x400)); 417 WREG32(R600_LOWER_GPIO_ENABLE, (lower_gpio_enable | 0x400)); 418 419 r = radeon_read_bios(rdev); 420 421 /* restore regs */ 422 WREG32(RADEON_VIPH_CONTROL, viph_control); 423 WREG32(R600_BUS_CNTL, bus_cntl); 424 WREG32(AVIVO_D1VGA_CONTROL, d1vga_control); 425 WREG32(AVIVO_D2VGA_CONTROL, d2vga_control); 426 WREG32(AVIVO_VGA_RENDER_CONTROL, vga_render_control); 427 WREG32(R600_ROM_CNTL, rom_cntl); 428 WREG32(R600_GENERAL_PWRMGT, general_pwrmgt); 429 WREG32(R600_LOW_VID_LOWER_GPIO_CNTL, low_vid_lower_gpio_cntl); 430 WREG32(R600_MEDIUM_VID_LOWER_GPIO_CNTL, medium_vid_lower_gpio_cntl); 431 WREG32(R600_HIGH_VID_LOWER_GPIO_CNTL, high_vid_lower_gpio_cntl); 432 WREG32(R600_CTXSW_VID_LOWER_GPIO_CNTL, ctxsw_vid_lower_gpio_cntl); 433 WREG32(R600_LOWER_GPIO_ENABLE, lower_gpio_enable); 434 return r; 435 } 436 437 static bool avivo_read_disabled_bios(struct radeon_device *rdev) 438 { 439 uint32_t seprom_cntl1; 440 uint32_t viph_control; 441 uint32_t bus_cntl; 442 uint32_t d1vga_control; 443 uint32_t d2vga_control; 444 uint32_t vga_render_control; 445 uint32_t gpiopad_a; 446 uint32_t gpiopad_en; 447 uint32_t gpiopad_mask; 448 bool r; 449 450 seprom_cntl1 = RREG32(RADEON_SEPROM_CNTL1); 451 viph_control = RREG32(RADEON_VIPH_CONTROL); 452 bus_cntl = RREG32(RV370_BUS_CNTL); 453 d1vga_control = RREG32(AVIVO_D1VGA_CONTROL); 454 d2vga_control = RREG32(AVIVO_D2VGA_CONTROL); 455 vga_render_control = RREG32(AVIVO_VGA_RENDER_CONTROL); 456 gpiopad_a = RREG32(RADEON_GPIOPAD_A); 457 gpiopad_en = RREG32(RADEON_GPIOPAD_EN); 458 gpiopad_mask = RREG32(RADEON_GPIOPAD_MASK); 459 460 WREG32(RADEON_SEPROM_CNTL1, 461 ((seprom_cntl1 & ~RADEON_SCK_PRESCALE_MASK) | 462 (0xc << RADEON_SCK_PRESCALE_SHIFT))); 463 WREG32(RADEON_GPIOPAD_A, 0); 464 WREG32(RADEON_GPIOPAD_EN, 0); 465 WREG32(RADEON_GPIOPAD_MASK, 0); 466 467 /* disable VIP */ 468 WREG32(RADEON_VIPH_CONTROL, (viph_control & ~RADEON_VIPH_EN)); 469 470 /* enable the rom */ 471 WREG32(RV370_BUS_CNTL, (bus_cntl & ~RV370_BUS_BIOS_DIS_ROM)); 472 473 /* Disable VGA mode */ 474 WREG32(AVIVO_D1VGA_CONTROL, 475 (d1vga_control & ~(AVIVO_DVGA_CONTROL_MODE_ENABLE | 476 AVIVO_DVGA_CONTROL_TIMING_SELECT))); 477 WREG32(AVIVO_D2VGA_CONTROL, 478 (d2vga_control & ~(AVIVO_DVGA_CONTROL_MODE_ENABLE | 479 AVIVO_DVGA_CONTROL_TIMING_SELECT))); 480 WREG32(AVIVO_VGA_RENDER_CONTROL, 481 (vga_render_control & ~AVIVO_VGA_VSTATUS_CNTL_MASK)); 482 483 r = radeon_read_bios(rdev); 484 485 /* restore regs */ 486 WREG32(RADEON_SEPROM_CNTL1, seprom_cntl1); 487 WREG32(RADEON_VIPH_CONTROL, viph_control); 488 WREG32(RV370_BUS_CNTL, bus_cntl); 489 WREG32(AVIVO_D1VGA_CONTROL, d1vga_control); 490 WREG32(AVIVO_D2VGA_CONTROL, d2vga_control); 491 WREG32(AVIVO_VGA_RENDER_CONTROL, vga_render_control); 492 WREG32(RADEON_GPIOPAD_A, gpiopad_a); 493 WREG32(RADEON_GPIOPAD_EN, gpiopad_en); 494 WREG32(RADEON_GPIOPAD_MASK, gpiopad_mask); 495 return r; 496 } 497 498 static bool legacy_read_disabled_bios(struct radeon_device *rdev) 499 { 500 uint32_t seprom_cntl1; 501 uint32_t viph_control; 502 uint32_t bus_cntl; 503 uint32_t crtc_gen_cntl; 504 uint32_t crtc2_gen_cntl; 505 uint32_t crtc_ext_cntl; 506 uint32_t fp2_gen_cntl; 507 bool r; 508 509 seprom_cntl1 = RREG32(RADEON_SEPROM_CNTL1); 510 viph_control = RREG32(RADEON_VIPH_CONTROL); 511 if (rdev->flags & RADEON_IS_PCIE) 512 bus_cntl = RREG32(RV370_BUS_CNTL); 513 else 514 bus_cntl = RREG32(RADEON_BUS_CNTL); 515 crtc_gen_cntl = RREG32(RADEON_CRTC_GEN_CNTL); 516 crtc2_gen_cntl = 0; 517 crtc_ext_cntl = RREG32(RADEON_CRTC_EXT_CNTL); 518 fp2_gen_cntl = 0; 519 520 if (rdev->ddev->pdev->device == PCI_DEVICE_ID_ATI_RADEON_QY) { 521 fp2_gen_cntl = RREG32(RADEON_FP2_GEN_CNTL); 522 } 523 524 if (!(rdev->flags & RADEON_SINGLE_CRTC)) { 525 crtc2_gen_cntl = RREG32(RADEON_CRTC2_GEN_CNTL); 526 } 527 528 WREG32(RADEON_SEPROM_CNTL1, 529 ((seprom_cntl1 & ~RADEON_SCK_PRESCALE_MASK) | 530 (0xc << RADEON_SCK_PRESCALE_SHIFT))); 531 532 /* disable VIP */ 533 WREG32(RADEON_VIPH_CONTROL, (viph_control & ~RADEON_VIPH_EN)); 534 535 /* enable the rom */ 536 if (rdev->flags & RADEON_IS_PCIE) 537 WREG32(RV370_BUS_CNTL, (bus_cntl & ~RV370_BUS_BIOS_DIS_ROM)); 538 else 539 WREG32(RADEON_BUS_CNTL, (bus_cntl & ~RADEON_BUS_BIOS_DIS_ROM)); 540 541 /* Turn off mem requests and CRTC for both controllers */ 542 WREG32(RADEON_CRTC_GEN_CNTL, 543 ((crtc_gen_cntl & ~RADEON_CRTC_EN) | 544 (RADEON_CRTC_DISP_REQ_EN_B | 545 RADEON_CRTC_EXT_DISP_EN))); 546 if (!(rdev->flags & RADEON_SINGLE_CRTC)) { 547 WREG32(RADEON_CRTC2_GEN_CNTL, 548 ((crtc2_gen_cntl & ~RADEON_CRTC2_EN) | 549 RADEON_CRTC2_DISP_REQ_EN_B)); 550 } 551 /* Turn off CRTC */ 552 WREG32(RADEON_CRTC_EXT_CNTL, 553 ((crtc_ext_cntl & ~RADEON_CRTC_CRT_ON) | 554 (RADEON_CRTC_SYNC_TRISTAT | 555 RADEON_CRTC_DISPLAY_DIS))); 556 557 if (rdev->ddev->pdev->device == PCI_DEVICE_ID_ATI_RADEON_QY) { 558 WREG32(RADEON_FP2_GEN_CNTL, (fp2_gen_cntl & ~RADEON_FP2_ON)); 559 } 560 561 r = radeon_read_bios(rdev); 562 563 /* restore regs */ 564 WREG32(RADEON_SEPROM_CNTL1, seprom_cntl1); 565 WREG32(RADEON_VIPH_CONTROL, viph_control); 566 if (rdev->flags & RADEON_IS_PCIE) 567 WREG32(RV370_BUS_CNTL, bus_cntl); 568 else 569 WREG32(RADEON_BUS_CNTL, bus_cntl); 570 WREG32(RADEON_CRTC_GEN_CNTL, crtc_gen_cntl); 571 if (!(rdev->flags & RADEON_SINGLE_CRTC)) { 572 WREG32(RADEON_CRTC2_GEN_CNTL, crtc2_gen_cntl); 573 } 574 WREG32(RADEON_CRTC_EXT_CNTL, crtc_ext_cntl); 575 if (rdev->ddev->pdev->device == PCI_DEVICE_ID_ATI_RADEON_QY) { 576 WREG32(RADEON_FP2_GEN_CNTL, fp2_gen_cntl); 577 } 578 return r; 579 } 580 581 static bool radeon_read_disabled_bios(struct radeon_device *rdev) 582 { 583 if (rdev->flags & RADEON_IS_IGP) 584 return igp_read_bios_from_vram(rdev); 585 else if (rdev->family >= CHIP_BARTS) 586 return ni_read_disabled_bios(rdev); 587 else if (rdev->family >= CHIP_RV770) 588 return r700_read_disabled_bios(rdev); 589 else if (rdev->family >= CHIP_R600) 590 return r600_read_disabled_bios(rdev); 591 else if (rdev->family >= CHIP_RS600) 592 return avivo_read_disabled_bios(rdev); 593 else 594 return legacy_read_disabled_bios(rdev); 595 } 596 597 #ifdef CONFIG_ACPI 598 static bool radeon_acpi_vfct_bios(struct radeon_device *rdev) 599 { 600 bool ret = false; 601 struct acpi_table_header *hdr; 602 acpi_size tbl_size; 603 UEFI_ACPI_VFCT *vfct; 604 GOP_VBIOS_CONTENT *vbios; 605 VFCT_IMAGE_HEADER *vhdr; 606 607 if (!ACPI_SUCCESS(acpi_get_table_with_size("VFCT", 1, &hdr, &tbl_size))) 608 return false; 609 if (tbl_size < sizeof(UEFI_ACPI_VFCT)) { 610 DRM_ERROR("ACPI VFCT table present but broken (too short #1)\n"); 611 goto out_unmap; 612 } 613 614 vfct = (UEFI_ACPI_VFCT *)hdr; 615 if (vfct->VBIOSImageOffset + sizeof(VFCT_IMAGE_HEADER) > tbl_size) { 616 DRM_ERROR("ACPI VFCT table present but broken (too short #2)\n"); 617 goto out_unmap; 618 } 619 620 vbios = (GOP_VBIOS_CONTENT *)((char *)hdr + vfct->VBIOSImageOffset); 621 vhdr = &vbios->VbiosHeader; 622 DRM_INFO("ACPI VFCT contains a BIOS for %02x:%02x.%d %04x:%04x, size %d\n", 623 vhdr->PCIBus, vhdr->PCIDevice, vhdr->PCIFunction, 624 vhdr->VendorID, vhdr->DeviceID, vhdr->ImageLength); 625 626 if (vhdr->PCIBus != rdev->pdev->bus->number || 627 vhdr->PCIDevice != PCI_SLOT(rdev->pdev->devfn) || 628 vhdr->PCIFunction != PCI_FUNC(rdev->pdev->devfn) || 629 vhdr->VendorID != rdev->pdev->vendor || 630 vhdr->DeviceID != rdev->pdev->device) { 631 DRM_INFO("ACPI VFCT table is not for this card\n"); 632 goto out_unmap; 633 } 634 635 if (vfct->VBIOSImageOffset + sizeof(VFCT_IMAGE_HEADER) + vhdr->ImageLength > tbl_size) { 636 DRM_ERROR("ACPI VFCT image truncated\n"); 637 goto out_unmap; 638 } 639 640 rdev->bios = kmemdup(&vbios->VbiosContent, vhdr->ImageLength, GFP_KERNEL); 641 ret = !!rdev->bios; 642 643 out_unmap: 644 return ret; 645 } 646 #else 647 static inline bool radeon_acpi_vfct_bios(struct radeon_device *rdev) 648 { 649 return false; 650 } 651 #endif 652 653 bool radeon_get_bios(struct radeon_device *rdev) 654 { 655 bool r; 656 uint16_t tmp; 657 658 r = radeon_atrm_get_bios(rdev); 659 if (r == false) 660 r = radeon_acpi_vfct_bios(rdev); 661 if (r == false) 662 r = igp_read_bios_from_vram(rdev); 663 if (r == false) 664 r = radeon_read_bios(rdev); 665 if (r == false) 666 r = radeon_read_disabled_bios(rdev); 667 if (r == false) 668 r = radeon_read_platform_bios(rdev); 669 if (r == false || rdev->bios == NULL) { 670 DRM_ERROR("Unable to locate a BIOS ROM\n"); 671 rdev->bios = NULL; 672 return false; 673 } 674 if (rdev->bios[0] != 0x55 || rdev->bios[1] != 0xaa) { 675 printk("BIOS signature incorrect %x %x\n", rdev->bios[0], rdev->bios[1]); 676 goto free_bios; 677 } 678 679 tmp = RBIOS16(0x18); 680 if (RBIOS8(tmp + 0x14) != 0x0) { 681 DRM_INFO("Not an x86 BIOS ROM, not using.\n"); 682 goto free_bios; 683 } 684 685 rdev->bios_header_start = RBIOS16(0x48); 686 if (!rdev->bios_header_start) { 687 goto free_bios; 688 } 689 tmp = rdev->bios_header_start + 4; 690 if (!memcmp(rdev->bios + tmp, "ATOM", 4) || 691 !memcmp(rdev->bios + tmp, "MOTA", 4)) { 692 rdev->is_atom_bios = true; 693 } else { 694 rdev->is_atom_bios = false; 695 } 696 697 DRM_DEBUG("%sBIOS detected\n", rdev->is_atom_bios ? "ATOM" : "COM"); 698 return true; 699 free_bios: 700 kfree(rdev->bios); 701 rdev->bios = NULL; 702 return false; 703 } 704