drivers/gpu/drm/radeon/radeon_device.c

   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 <linux/console.h>
  29 #include <drm/drmP.h>
  30 #include <drm/drm_crtc_helper.h>
  31 #include <drm/radeon_drm.h>
  32 #include <linux/vgaarb.h>
  33 #include "radeon_reg.h"
  34 #include "radeon.h"
  35 #include "radeon_asic.h"
  36 #include "atom.h"
  37
  38 /*
  39  * Clear GPU surface registers.
  40  */
  41 void radeon_surface_init(struct radeon_device *rdev)
  42 {
  43         /* FIXME: check this out */
  44         if (rdev->family < CHIP_R600) {
  45                 int i;
  46
  47                 for (i = 0; i < 8; i++) {
  48                         WREG32(RADEON_SURFACE0_INFO +
  49                                i * (RADEON_SURFACE1_INFO - RADEON_SURFACE0_INFO),
  50                                0);
  51                 }
  52                 /* enable surfaces */
  53                 WREG32(RADEON_SURFACE_CNTL, 0);
  54         }
  55 }
  56
  57 /*
  58  * GPU scratch registers helpers function.
  59  */
  60 void radeon_scratch_init(struct radeon_device *rdev)
  61 {
  62         int i;
  63
  64         /* FIXME: check this out */
  65         if (rdev->family < CHIP_R300) {
  66                 rdev->scratch.num_reg = 5;
  67         } else {
  68                 rdev->scratch.num_reg = 7;
  69         }
  70         for (i = 0; i < rdev->scratch.num_reg; i++) {
  71                 rdev->scratch.free[i] = true;
  72                 rdev->scratch.reg[i] = RADEON_SCRATCH_REG0 + (i * 4);
  73         }
  74 }
  75
  76 int radeon_scratch_get(struct radeon_device *rdev, uint32_t *reg)
  77 {
  78         int i;
  79
  80         for (i = 0; i < rdev->scratch.num_reg; i++) {
  81                 if (rdev->scratch.free[i]) {
  82                         rdev->scratch.free[i] = false;
  83                         *reg = rdev->scratch.reg[i];
  84                         return 0;
  85                 }
  86         }
  87         return -EINVAL;
  88 }
  89
  90 void radeon_scratch_free(struct radeon_device *rdev, uint32_t reg)
  91 {
  92         int i;
  93
  94         for (i = 0; i < rdev->scratch.num_reg; i++) {
  95                 if (rdev->scratch.reg[i] == reg) {
  96                         rdev->scratch.free[i] = true;
  97                         return;
  98                 }
  99         }
 100 }
 101
 102 /*
 103  * MC common functions
 104  */
 105 int radeon_mc_setup(struct radeon_device *rdev)
 106 {
 107         uint32_t tmp;
 108
 109         /* Some chips have an "issue" with the memory controller, the
 110          * location must be aligned to the size. We just align it down,
 111          * too bad if we walk over the top of system memory, we don't
 112          * use DMA without a remapped anyway.
 113          * Affected chips are rv280, all r3xx, and all r4xx, but not IGP
 114          */
 115         /* FGLRX seems to setup like this, VRAM a 0, then GART.
 116          */
 117         /*
 118          * Note: from R6xx the address space is 40bits but here we only
 119          * use 32bits (still have to see a card which would exhaust 4G
 120          * address space).
 121          */
 122         if (rdev->mc.vram_location != 0xFFFFFFFFUL) {
 123                 /* vram location was already setup try to put gtt after
 124                  * if it fits */
 125                 tmp = rdev->mc.vram_location + rdev->mc.mc_vram_size;
 126                 tmp = (tmp + rdev->mc.gtt_size - 1) & ~(rdev->mc.gtt_size - 1);
 127                 if ((0xFFFFFFFFUL - tmp) >= rdev->mc.gtt_size) {
 128                         rdev->mc.gtt_location = tmp;
 129                 } else {
 130                         if (rdev->mc.gtt_size >= rdev->mc.vram_location) {
 131                                 printk(KERN_ERR "[drm] GTT too big to fit "
 132                                        "before or after vram location.\n");
 133                                 return -EINVAL;
 134                         }
 135                         rdev->mc.gtt_location = 0;
 136                 }
 137         } else if (rdev->mc.gtt_location != 0xFFFFFFFFUL) {
 138                 /* gtt location was already setup try to put vram before
 139                  * if it fits */
 140                 if (rdev->mc.mc_vram_size < rdev->mc.gtt_location) {
 141                         rdev->mc.vram_location = 0;
 142                 } else {
 143                         tmp = rdev->mc.gtt_location + rdev->mc.gtt_size;
 144                         tmp += (rdev->mc.mc_vram_size - 1);
 145                         tmp &= ~(rdev->mc.mc_vram_size - 1);
 146                         if ((0xFFFFFFFFUL - tmp) >= rdev->mc.mc_vram_size) {
 147                                 rdev->mc.vram_location = tmp;
 148                         } else {
 149                                 printk(KERN_ERR "[drm] vram too big to fit "
 150                                        "before or after GTT location.\n");
 151                                 return -EINVAL;
 152                         }
 153                 }
 154         } else {
 155                 rdev->mc.vram_location = 0;
 156                 tmp = rdev->mc.mc_vram_size;
 157                 tmp = (tmp + rdev->mc.gtt_size - 1) & ~(rdev->mc.gtt_size - 1);
 158                 rdev->mc.gtt_location = tmp;
 159         }
 160         rdev->mc.vram_start = rdev->mc.vram_location;
 161         rdev->mc.vram_end = rdev->mc.vram_location + rdev->mc.mc_vram_size - 1;
 162         rdev->mc.gtt_start = rdev->mc.gtt_location;
 163         rdev->mc.gtt_end = rdev->mc.gtt_location + rdev->mc.gtt_size - 1;
 164         DRM_INFO("radeon: VRAM %uM\n", (unsigned)(rdev->mc.mc_vram_size >> 20));
 165         DRM_INFO("radeon: VRAM from 0x%08X to 0x%08X\n",
 166                  (unsigned)rdev->mc.vram_location,
 167                  (unsigned)(rdev->mc.vram_location + rdev->mc.mc_vram_size - 1));
 168         DRM_INFO("radeon: GTT %uM\n", (unsigned)(rdev->mc.gtt_size >> 20));
 169         DRM_INFO("radeon: GTT from 0x%08X to 0x%08X\n",
 170                  (unsigned)rdev->mc.gtt_location,
 171                  (unsigned)(rdev->mc.gtt_location + rdev->mc.gtt_size - 1));
 172         return 0;
 173 }
 174
 175
 176 /*
 177  * GPU helpers function.
 178  */
 179 bool radeon_card_posted(struct radeon_device *rdev)
 180 {
 181         uint32_t reg;
 182
 183         /* first check CRTCs */
 184         if (ASIC_IS_AVIVO(rdev)) {
 185                 reg = RREG32(AVIVO_D1CRTC_CONTROL) |
 186                       RREG32(AVIVO_D2CRTC_CONTROL);
 187                 if (reg & AVIVO_CRTC_EN) {
 188                         return true;
 189                 }
 190         } else {
 191                 reg = RREG32(RADEON_CRTC_GEN_CNTL) |
 192                       RREG32(RADEON_CRTC2_GEN_CNTL);
 193                 if (reg & RADEON_CRTC_EN) {
 194                         return true;
 195                 }
 196         }
 197
 198         /* then check MEM_SIZE, in case the crtcs are off */
 199         if (rdev->family >= CHIP_R600)
 200                 reg = RREG32(R600_CONFIG_MEMSIZE);
 201         else
 202                 reg = RREG32(RADEON_CONFIG_MEMSIZE);
 203
 204         if (reg)
 205                 return true;
 206
 207         return false;
 208
 209 }
 210
 211 int radeon_dummy_page_init(struct radeon_device *rdev)
 212 {
 213         rdev->dummy_page.page = alloc_page(GFP_DMA32 | GFP_KERNEL | __GFP_ZERO);
 214         if (rdev->dummy_page.page == NULL)
 215                 return -ENOMEM;
 216         rdev->dummy_page.addr = pci_map_page(rdev->pdev, rdev->dummy_page.page,
 217                                         0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
 218         if (!rdev->dummy_page.addr) {
 219                 __free_page(rdev->dummy_page.page);
 220                 rdev->dummy_page.page = NULL;
 221                 return -ENOMEM;
 222         }
 223         return 0;
 224 }
 225
 226 void radeon_dummy_page_fini(struct radeon_device *rdev)
 227 {
 228         if (rdev->dummy_page.page == NULL)
 229                 return;
 230         pci_unmap_page(rdev->pdev, rdev->dummy_page.addr,
 231                         PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
 232         __free_page(rdev->dummy_page.page);
 233         rdev->dummy_page.page = NULL;
 234 }
 235
 236
 237 /*
 238  * Registers accessors functions.
 239  */
 240 uint32_t radeon_invalid_rreg(struct radeon_device *rdev, uint32_t reg)
 241 {
 242         DRM_ERROR("Invalid callback to read register 0x%04X\n", reg);
 243         BUG_ON(1);
 244         return 0;
 245 }
 246
 247 void radeon_invalid_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)
 248 {
 249         DRM_ERROR("Invalid callback to write register 0x%04X with 0x%08X\n",
 250                   reg, v);
 251         BUG_ON(1);
 252 }
 253
 254 void radeon_register_accessor_init(struct radeon_device *rdev)
 255 {
 256         rdev->mc_rreg = &radeon_invalid_rreg;
 257         rdev->mc_wreg = &radeon_invalid_wreg;
 258         rdev->pll_rreg = &radeon_invalid_rreg;
 259         rdev->pll_wreg = &radeon_invalid_wreg;
 260         rdev->pciep_rreg = &radeon_invalid_rreg;
 261         rdev->pciep_wreg = &radeon_invalid_wreg;
 262
 263         /* Don't change order as we are overridding accessor. */
 264         if (rdev->family < CHIP_RV515) {
 265                 rdev->pcie_reg_mask = 0xff;
 266         } else {
 267                 rdev->pcie_reg_mask = 0x7ff;
 268         }
 269         /* FIXME: not sure here */
 270         if (rdev->family <= CHIP_R580) {
 271                 rdev->pll_rreg = &r100_pll_rreg;
 272                 rdev->pll_wreg = &r100_pll_wreg;
 273         }
 274         if (rdev->family >= CHIP_R420) {
 275                 rdev->mc_rreg = &r420_mc_rreg;
 276                 rdev->mc_wreg = &r420_mc_wreg;
 277         }
 278         if (rdev->family >= CHIP_RV515) {
 279                 rdev->mc_rreg = &rv515_mc_rreg;
 280                 rdev->mc_wreg = &rv515_mc_wreg;
 281         }
 282         if (rdev->family == CHIP_RS400 || rdev->family == CHIP_RS480) {
 283                 rdev->mc_rreg = &rs400_mc_rreg;
 284                 rdev->mc_wreg = &rs400_mc_wreg;
 285         }
 286         if (rdev->family == CHIP_RS690 || rdev->family == CHIP_RS740) {
 287                 rdev->mc_rreg = &rs690_mc_rreg;
 288                 rdev->mc_wreg = &rs690_mc_wreg;
 289         }
 290         if (rdev->family == CHIP_RS600) {
 291                 rdev->mc_rreg = &rs600_mc_rreg;
 292                 rdev->mc_wreg = &rs600_mc_wreg;
 293         }
 294         if (rdev->family >= CHIP_R600) {
 295                 rdev->pciep_rreg = &r600_pciep_rreg;
 296                 rdev->pciep_wreg = &r600_pciep_wreg;
 297         }
 298 }
 299
 300
 301 /*
 302  * ASIC
 303  */
 304 int radeon_asic_init(struct radeon_device *rdev)
 305 {
 306         radeon_register_accessor_init(rdev);
 307         switch (rdev->family) {
 308         case CHIP_R100:
 309         case CHIP_RV100:
 310         case CHIP_RS100:
 311         case CHIP_RV200:
 312         case CHIP_RS200:
 313         case CHIP_R200:
 314         case CHIP_RV250:
 315         case CHIP_RS300:
 316         case CHIP_RV280:
 317                 rdev->asic = &r100_asic;
 318                 break;
 319         case CHIP_R300:
 320         case CHIP_R350:
 321         case CHIP_RV350:
 322         case CHIP_RV380:
 323                 rdev->asic = &r300_asic;
 324                 if (rdev->flags & RADEON_IS_PCIE) {
 325                         rdev->asic->gart_tlb_flush = &rv370_pcie_gart_tlb_flush;
 326                         rdev->asic->gart_set_page = &rv370_pcie_gart_set_page;
 327                 }
 328                 break;
 329         case CHIP_R420:
 330         case CHIP_R423:
 331         case CHIP_RV410:
 332                 rdev->asic = &r420_asic;
 333                 break;
 334         case CHIP_RS400:
 335         case CHIP_RS480:
 336                 rdev->asic = &rs400_asic;
 337                 break;
 338         case CHIP_RS600:
 339                 rdev->asic = &rs600_asic;
 340                 break;
 341         case CHIP_RS690:
 342         case CHIP_RS740:
 343                 rdev->asic = &rs690_asic;
 344                 break;
 345         case CHIP_RV515:
 346                 rdev->asic = &rv515_asic;
 347                 break;
 348         case CHIP_R520:
 349         case CHIP_RV530:
 350         case CHIP_RV560:
 351         case CHIP_RV570:
 352         case CHIP_R580:
 353                 rdev->asic = &r520_asic;
 354                 break;
 355         case CHIP_R600:
 356         case CHIP_RV610:
 357         case CHIP_RV630:
 358         case CHIP_RV620:
 359         case CHIP_RV635:
 360         case CHIP_RV670:
 361         case CHIP_RS780:
 362         case CHIP_RS880:
 363                 rdev->asic = &r600_asic;
 364                 break;
 365         case CHIP_RV770:
 366         case CHIP_RV730:
 367         case CHIP_RV710:
 368         case CHIP_RV740:
 369                 rdev->asic = &rv770_asic;
 370                 break;
 371         default:
 372                 /* FIXME: not supported yet */
 373                 return -EINVAL;
 374         }
 375         return 0;
 376 }
 377
 378
 379 /*
 380  * Wrapper around modesetting bits.
 381  */
 382 int radeon_clocks_init(struct radeon_device *rdev)
 383 {
 384         int r;
 385
 386         r = radeon_static_clocks_init(rdev->ddev);
 387         if (r) {
 388                 return r;
 389         }
 390         DRM_INFO("Clocks initialized !\n");
 391         return 0;
 392 }
 393
 394 void radeon_clocks_fini(struct radeon_device *rdev)
 395 {
 396 }
 397
 398 /* ATOM accessor methods */
 399 static uint32_t cail_pll_read(struct card_info *info, uint32_t reg)
 400 {
 401         struct radeon_device *rdev = info->dev->dev_private;
 402         uint32_t r;
 403
 404         r = rdev->pll_rreg(rdev, reg);
 405         return r;
 406 }
 407
 408 static void cail_pll_write(struct card_info *info, uint32_t reg, uint32_t val)
 409 {
 410         struct radeon_device *rdev = info->dev->dev_private;
 411
 412         rdev->pll_wreg(rdev, reg, val);
 413 }
 414
 415 static uint32_t cail_mc_read(struct card_info *info, uint32_t reg)
 416 {
 417         struct radeon_device *rdev = info->dev->dev_private;
 418         uint32_t r;
 419
 420         r = rdev->mc_rreg(rdev, reg);
 421         return r;
 422 }
 423
 424 static void cail_mc_write(struct card_info *info, uint32_t reg, uint32_t val)
 425 {
 426         struct radeon_device *rdev = info->dev->dev_private;
 427
 428         rdev->mc_wreg(rdev, reg, val);
 429 }
 430
 431 static void cail_reg_write(struct card_info *info, uint32_t reg, uint32_t val)
 432 {
 433         struct radeon_device *rdev = info->dev->dev_private;
 434
 435         WREG32(reg*4, val);
 436 }
 437
 438 static uint32_t cail_reg_read(struct card_info *info, uint32_t reg)
 439 {
 440         struct radeon_device *rdev = info->dev->dev_private;
 441         uint32_t r;
 442
 443         r = RREG32(reg*4);
 444         return r;
 445 }
 446
 447 int radeon_atombios_init(struct radeon_device *rdev)
 448 {
 449         struct card_info *atom_card_info =
 450             kzalloc(sizeof(struct card_info), GFP_KERNEL);
 451
 452         if (!atom_card_info)
 453                 return -ENOMEM;
 454
 455         rdev->mode_info.atom_card_info = atom_card_info;
 456         atom_card_info->dev = rdev->ddev;
 457         atom_card_info->reg_read = cail_reg_read;
 458         atom_card_info->reg_write = cail_reg_write;
 459         atom_card_info->mc_read = cail_mc_read;
 460         atom_card_info->mc_write = cail_mc_write;
 461         atom_card_info->pll_read = cail_pll_read;
 462         atom_card_info->pll_write = cail_pll_write;
 463
 464         rdev->mode_info.atom_context = atom_parse(atom_card_info, rdev->bios);
 465         radeon_atom_initialize_bios_scratch_regs(rdev->ddev);
 466         return 0;
 467 }
 468
 469 void radeon_atombios_fini(struct radeon_device *rdev)
 470 {
 471         kfree(rdev->mode_info.atom_context);
 472         kfree(rdev->mode_info.atom_card_info);
 473 }
 474
 475 int radeon_combios_init(struct radeon_device *rdev)
 476 {
 477         radeon_combios_initialize_bios_scratch_regs(rdev->ddev);
 478         return 0;
 479 }
 480
 481 void radeon_combios_fini(struct radeon_device *rdev)
 482 {
 483 }
 484
 485 /* if we get transitioned to only one device, tak VGA back */
 486 static unsigned int radeon_vga_set_decode(void *cookie, bool state)
 487 {
 488         struct radeon_device *rdev = cookie;
 489         radeon_vga_set_state(rdev, state);
 490         if (state)
 491                 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
 492                        VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
 493         else
 494                 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
 495 }
 496
 497 void radeon_agp_disable(struct radeon_device *rdev)
 498 {
 499         rdev->flags &= ~RADEON_IS_AGP;
 500         if (rdev->family >= CHIP_R600) {
 501                 DRM_INFO("Forcing AGP to PCIE mode\n");
 502                 rdev->flags |= RADEON_IS_PCIE;
 503         } else if (rdev->family >= CHIP_RV515 ||
 504                         rdev->family == CHIP_RV380 ||
 505                         rdev->family == CHIP_RV410 ||
 506                         rdev->family == CHIP_R423) {
 507                 DRM_INFO("Forcing AGP to PCIE mode\n");
 508                 rdev->flags |= RADEON_IS_PCIE;
 509                 rdev->asic->gart_tlb_flush = &rv370_pcie_gart_tlb_flush;
 510                 rdev->asic->gart_set_page = &rv370_pcie_gart_set_page;
 511         } else {
 512                 DRM_INFO("Forcing AGP to PCI mode\n");
 513                 rdev->flags |= RADEON_IS_PCI;
 514                 rdev->asic->gart_tlb_flush = &r100_pci_gart_tlb_flush;
 515                 rdev->asic->gart_set_page = &r100_pci_gart_set_page;
 516         }
 517 }
 518
 519 /*
 520  * Radeon device.
 521  */
 522 int radeon_device_init(struct radeon_device *rdev,
 523                        struct drm_device *ddev,
 524                        struct pci_dev *pdev,
 525                        uint32_t flags)
 526 {
 527         int r;
 528         int dma_bits;
 529
 530         DRM_INFO("radeon: Initializing kernel modesetting.\n");
 531         rdev->shutdown = false;
 532         rdev->dev = &pdev->dev;
 533         rdev->ddev = ddev;
 534         rdev->pdev = pdev;
 535         rdev->flags = flags;
 536         rdev->family = flags & RADEON_FAMILY_MASK;
 537         rdev->is_atom_bios = false;
 538         rdev->usec_timeout = RADEON_MAX_USEC_TIMEOUT;
 539         rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024;
 540         rdev->gpu_lockup = false;
 541         rdev->accel_working = false;
 542         /* mutex initialization are all done here so we
 543          * can recall function without having locking issues */
 544         mutex_init(&rdev->cs_mutex);
 545         mutex_init(&rdev->ib_pool.mutex);
 546         mutex_init(&rdev->cp.mutex);
 547         rwlock_init(&rdev->fence_drv.lock);
 548         INIT_LIST_HEAD(&rdev->gem.objects);
 549
 550         /* Set asic functions */
 551         r = radeon_asic_init(rdev);
 552         if (r) {
 553                 return r;
 554         }
 555
 556         if (radeon_agpmode == -1) {
 557                 radeon_agp_disable(rdev);
 558         }
 559
 560         /* set DMA mask + need_dma32 flags.
 561          * PCIE - can handle 40-bits.
 562          * IGP - can handle 40-bits (in theory)
 563          * AGP - generally dma32 is safest
 564          * PCI - only dma32
 565          */
 566         rdev->need_dma32 = false;
 567         if (rdev->flags & RADEON_IS_AGP)
 568                 rdev->need_dma32 = true;
 569         if (rdev->flags & RADEON_IS_PCI)
 570                 rdev->need_dma32 = true;
 571
 572         dma_bits = rdev->need_dma32 ? 32 : 40;
 573         r = pci_set_dma_mask(rdev->pdev, DMA_BIT_MASK(dma_bits));
 574         if (r) {
 575                 printk(KERN_WARNING "radeon: No suitable DMA available.\n");
 576         }
 577
 578         /* Registers mapping */
 579         /* TODO: block userspace mapping of io register */
 580         rdev->rmmio_base = drm_get_resource_start(rdev->ddev, 2);
 581         rdev->rmmio_size = drm_get_resource_len(rdev->ddev, 2);
 582         rdev->rmmio = ioremap(rdev->rmmio_base, rdev->rmmio_size);
 583         if (rdev->rmmio == NULL) {
 584                 return -ENOMEM;
 585         }
 586         DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)rdev->rmmio_base);
 587         DRM_INFO("register mmio size: %u\n", (unsigned)rdev->rmmio_size);
 588
 589         /* if we have > 1 VGA cards, then disable the radeon VGA resources */
 590         /* this will fail for cards that aren't VGA class devices, just
 591          * ignore it */
 592         vga_client_register(rdev->pdev, rdev, NULL, radeon_vga_set_decode);
 593
 594         r = radeon_init(rdev);
 595         if (r)
 596                 return r;
 597
 598         if (rdev->flags & RADEON_IS_AGP && !rdev->accel_working) {
 599                 /* Acceleration not working on AGP card try again
 600                  * with fallback to PCI or PCIE GART
 601                  */
 602                 radeon_gpu_reset(rdev);
 603                 radeon_fini(rdev);
 604                 radeon_agp_disable(rdev);
 605                 r = radeon_init(rdev);
 606                 if (r)
 607                         return r;
 608         }
 609         if (radeon_testing) {
 610                 radeon_test_moves(rdev);
 611         }
 612         if (radeon_benchmarking) {
 613                 radeon_benchmark(rdev);
 614         }
 615         return 0;
 616 }
 617
 618 void radeon_device_fini(struct radeon_device *rdev)
 619 {
 620         DRM_INFO("radeon: finishing device.\n");
 621         rdev->shutdown = true;
 622         radeon_fini(rdev);
 623         vga_client_register(rdev->pdev, NULL, NULL, NULL);
 624         iounmap(rdev->rmmio);
 625         rdev->rmmio = NULL;
 626 }
 627
 628
 629 /*
 630  * Suspend & resume.
 631  */
 632 int radeon_suspend_kms(struct drm_device *dev, pm_message_t state)
 633 {
 634         struct radeon_device *rdev = dev->dev_private;
 635         struct drm_crtc *crtc;
 636
 637         if (dev == NULL || rdev == NULL) {
 638                 return -ENODEV;
 639         }
 640         if (state.event == PM_EVENT_PRETHAW) {
 641                 return 0;
 642         }
 643         /* unpin the front buffers */
 644         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 645                 struct radeon_framebuffer *rfb = to_radeon_framebuffer(crtc->fb);
 646                 struct radeon_object *robj;
 647
 648                 if (rfb == NULL || rfb->obj == NULL) {
 649                         continue;
 650                 }
 651                 robj = rfb->obj->driver_private;
 652                 if (robj != rdev->fbdev_robj) {
 653                         radeon_object_unpin(robj);
 654                 }
 655         }
 656         /* evict vram memory */
 657         radeon_object_evict_vram(rdev);
 658         /* wait for gpu to finish processing current batch */
 659         radeon_fence_wait_last(rdev);
 660
 661         radeon_save_bios_scratch_regs(rdev);
 662
 663         radeon_suspend(rdev);
 664         /* evict remaining vram memory */
 665         radeon_object_evict_vram(rdev);
 666
 667         pci_save_state(dev->pdev);
 668         if (state.event == PM_EVENT_SUSPEND) {
 669                 /* Shut down the device */
 670                 pci_disable_device(dev->pdev);
 671                 pci_set_power_state(dev->pdev, PCI_D3hot);
 672         }
 673         acquire_console_sem();
 674         fb_set_suspend(rdev->fbdev_info, 1);
 675         release_console_sem();
 676         return 0;
 677 }
 678
 679 int radeon_resume_kms(struct drm_device *dev)
 680 {
 681         struct radeon_device *rdev = dev->dev_private;
 682
 683         acquire_console_sem();
 684         pci_set_power_state(dev->pdev, PCI_D0);
 685         pci_restore_state(dev->pdev);
 686         if (pci_enable_device(dev->pdev)) {
 687                 release_console_sem();
 688                 return -1;
 689         }
 690         pci_set_master(dev->pdev);
 691         radeon_resume(rdev);
 692         radeon_restore_bios_scratch_regs(rdev);
 693         fb_set_suspend(rdev->fbdev_info, 0);
 694         release_console_sem();
 695
 696         /* blat the mode back in */
 697         drm_helper_resume_force_mode(dev);
 698         return 0;
 699 }
 700
 701
 702 /*
 703  * Debugfs
 704  */
 705 struct radeon_debugfs {
 706         struct drm_info_list    *files;
 707         unsigned                num_files;
 708 };
 709 static struct radeon_debugfs _radeon_debugfs[RADEON_DEBUGFS_MAX_NUM_FILES];
 710 static unsigned _radeon_debugfs_count = 0;
 711
 712 int radeon_debugfs_add_files(struct radeon_device *rdev,
 713                              struct drm_info_list *files,
 714                              unsigned nfiles)
 715 {
 716         unsigned i;
 717
 718         for (i = 0; i < _radeon_debugfs_count; i++) {
 719                 if (_radeon_debugfs[i].files == files) {
 720                         /* Already registered */
 721                         return 0;
 722                 }
 723         }
 724         if ((_radeon_debugfs_count + nfiles) > RADEON_DEBUGFS_MAX_NUM_FILES) {
 725                 DRM_ERROR("Reached maximum number of debugfs files.\n");
 726                 DRM_ERROR("Report so we increase RADEON_DEBUGFS_MAX_NUM_FILES.\n");
 727                 return -EINVAL;
 728         }
 729         _radeon_debugfs[_radeon_debugfs_count].files = files;
 730         _radeon_debugfs[_radeon_debugfs_count].num_files = nfiles;
 731         _radeon_debugfs_count++;
 732 #if defined(CONFIG_DEBUG_FS)
 733         drm_debugfs_create_files(files, nfiles,
 734                                  rdev->ddev->control->debugfs_root,
 735                                  rdev->ddev->control);
 736         drm_debugfs_create_files(files, nfiles,
 737                                  rdev->ddev->primary->debugfs_root,
 738                                  rdev->ddev->primary);
 739 #endif
 740         return 0;
 741 }
 742
 743 #if defined(CONFIG_DEBUG_FS)
 744 int radeon_debugfs_init(struct drm_minor *minor)
 745 {
 746         return 0;
 747 }
 748
 749 void radeon_debugfs_cleanup(struct drm_minor *minor)
 750 {
 751         unsigned i;
 752
 753         for (i = 0; i < _radeon_debugfs_count; i++) {
 754                 drm_debugfs_remove_files(_radeon_debugfs[i].files,
 755                                          _radeon_debugfs[i].num_files, minor);
 756         }
 757 }
 758 #endif