drivers/gpu/drm/radeon/rs400.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
  29 #include <linux/seq_file.h>
  30 #include <linux/slab.h>
  31
  32 #include <drm/drm_debugfs.h>
  33 #include <drm/drm_device.h>
  34 #include <drm/drm_file.h>
  35
  36 #include "radeon.h"
  37 #include "radeon_asic.h"
  38 #include "rs400d.h"
  39
  40 /* This files gather functions specifics to : rs400,rs480 */
  41 static int rs400_debugfs_pcie_gart_info_init(struct radeon_device *rdev);
  42
  43 void rs400_gart_adjust_size(struct radeon_device *rdev)
  44 {
  45         /* Check gart size */
  46         switch (rdev->mc.gtt_size/(1024*1024)) {
  47         case 32:
  48         case 64:
  49         case 128:
  50         case 256:
  51         case 512:
  52         case 1024:
  53         case 2048:
  54                 break;
  55         default:
  56                 DRM_ERROR("Unable to use IGP GART size %uM\n",
  57                           (unsigned)(rdev->mc.gtt_size >> 20));
  58                 DRM_ERROR("Valid GART size for IGP are 32M,64M,128M,256M,512M,1G,2G\n");
  59                 DRM_ERROR("Forcing to 32M GART size\n");
  60                 rdev->mc.gtt_size = 32 * 1024 * 1024;
  61                 return;
  62         }
  63 }
  64
  65 void rs400_gart_tlb_flush(struct radeon_device *rdev)
  66 {
  67         uint32_t tmp;
  68         unsigned int timeout = rdev->usec_timeout;
  69
  70         WREG32_MC(RS480_GART_CACHE_CNTRL, RS480_GART_CACHE_INVALIDATE);
  71         do {
  72                 tmp = RREG32_MC(RS480_GART_CACHE_CNTRL);
  73                 if ((tmp & RS480_GART_CACHE_INVALIDATE) == 0)
  74                         break;
  75                 udelay(1);
  76                 timeout--;
  77         } while (timeout > 0);
  78         WREG32_MC(RS480_GART_CACHE_CNTRL, 0);
  79 }
  80
  81 int rs400_gart_init(struct radeon_device *rdev)
  82 {
  83         int r;
  84
  85         if (rdev->gart.ptr) {
  86                 WARN(1, "RS400 GART already initialized\n");
  87                 return 0;
  88         }
  89         /* Check gart size */
  90         switch(rdev->mc.gtt_size / (1024 * 1024)) {
  91         case 32:
  92         case 64:
  93         case 128:
  94         case 256:
  95         case 512:
  96         case 1024:
  97         case 2048:
  98                 break;
  99         default:
 100                 return -EINVAL;
 101         }
 102         /* Initialize common gart structure */
 103         r = radeon_gart_init(rdev);
 104         if (r)
 105                 return r;
 106         if (rs400_debugfs_pcie_gart_info_init(rdev))
 107                 DRM_ERROR("Failed to register debugfs file for RS400 GART !\n");
 108         rdev->gart.table_size = rdev->gart.num_gpu_pages * 4;
 109         return radeon_gart_table_ram_alloc(rdev);
 110 }
 111
 112 int rs400_gart_enable(struct radeon_device *rdev)
 113 {
 114         uint32_t size_reg;
 115         uint32_t tmp;
 116
 117         tmp = RREG32_MC(RS690_AIC_CTRL_SCRATCH);
 118         tmp |= RS690_DIS_OUT_OF_PCI_GART_ACCESS;
 119         WREG32_MC(RS690_AIC_CTRL_SCRATCH, tmp);
 120         /* Check gart size */
 121         switch(rdev->mc.gtt_size / (1024 * 1024)) {
 122         case 32:
 123                 size_reg = RS480_VA_SIZE_32MB;
 124                 break;
 125         case 64:
 126                 size_reg = RS480_VA_SIZE_64MB;
 127                 break;
 128         case 128:
 129                 size_reg = RS480_VA_SIZE_128MB;
 130                 break;
 131         case 256:
 132                 size_reg = RS480_VA_SIZE_256MB;
 133                 break;
 134         case 512:
 135                 size_reg = RS480_VA_SIZE_512MB;
 136                 break;
 137         case 1024:
 138                 size_reg = RS480_VA_SIZE_1GB;
 139                 break;
 140         case 2048:
 141                 size_reg = RS480_VA_SIZE_2GB;
 142                 break;
 143         default:
 144                 return -EINVAL;
 145         }
 146         /* It should be fine to program it to max value */
 147         if (rdev->family == CHIP_RS690 || (rdev->family == CHIP_RS740)) {
 148                 WREG32_MC(RS690_MCCFG_AGP_BASE, 0xFFFFFFFF);
 149                 WREG32_MC(RS690_MCCFG_AGP_BASE_2, 0);
 150         } else {
 151                 WREG32(RADEON_AGP_BASE, 0xFFFFFFFF);
 152                 WREG32(RS480_AGP_BASE_2, 0);
 153         }
 154         tmp = REG_SET(RS690_MC_AGP_TOP, rdev->mc.gtt_end >> 16);
 155         tmp |= REG_SET(RS690_MC_AGP_START, rdev->mc.gtt_start >> 16);
 156         if ((rdev->family == CHIP_RS690) || (rdev->family == CHIP_RS740)) {
 157                 WREG32_MC(RS690_MCCFG_AGP_LOCATION, tmp);
 158                 tmp = RREG32(RADEON_BUS_CNTL) & ~RS600_BUS_MASTER_DIS;
 159                 WREG32(RADEON_BUS_CNTL, tmp);
 160         } else {
 161                 WREG32(RADEON_MC_AGP_LOCATION, tmp);
 162                 tmp = RREG32(RADEON_BUS_CNTL) & ~RADEON_BUS_MASTER_DIS;
 163                 WREG32(RADEON_BUS_CNTL, tmp);
 164         }
 165         /* Table should be in 32bits address space so ignore bits above. */
 166         tmp = (u32)rdev->gart.table_addr & 0xfffff000;
 167         tmp |= (upper_32_bits(rdev->gart.table_addr) & 0xff) << 4;
 168
 169         WREG32_MC(RS480_GART_BASE, tmp);
 170         /* TODO: more tweaking here */
 171         WREG32_MC(RS480_GART_FEATURE_ID,
 172                   (RS480_TLB_ENABLE |
 173                    RS480_GTW_LAC_EN | RS480_1LEVEL_GART));
 174         /* Disable snooping */
 175         WREG32_MC(RS480_AGP_MODE_CNTL,
 176                   (1 << RS480_REQ_TYPE_SNOOP_SHIFT) | RS480_REQ_TYPE_SNOOP_DIS);
 177         /* Disable AGP mode */
 178         /* FIXME: according to doc we should set HIDE_MMCFG_BAR=0,
 179          * AGPMODE30=0 & AGP30ENHANCED=0 in NB_CNTL */
 180         if ((rdev->family == CHIP_RS690) || (rdev->family == CHIP_RS740)) {
 181                 tmp = RREG32_MC(RS480_MC_MISC_CNTL);
 182                 tmp |= RS480_GART_INDEX_REG_EN | RS690_BLOCK_GFX_D3_EN;
 183                 WREG32_MC(RS480_MC_MISC_CNTL, tmp);
 184         } else {
 185                 tmp = RREG32_MC(RS480_MC_MISC_CNTL);
 186                 tmp |= RS480_GART_INDEX_REG_EN;
 187                 WREG32_MC(RS480_MC_MISC_CNTL, tmp);
 188         }
 189         /* Enable gart */
 190         WREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE, (RS480_GART_EN | size_reg));
 191         rs400_gart_tlb_flush(rdev);
 192         DRM_INFO("PCIE GART of %uM enabled (table at 0x%016llX).\n",
 193                  (unsigned)(rdev->mc.gtt_size >> 20),
 194                  (unsigned long long)rdev->gart.table_addr);
 195         rdev->gart.ready = true;
 196         return 0;
 197 }
 198
 199 void rs400_gart_disable(struct radeon_device *rdev)
 200 {
 201         uint32_t tmp;
 202
 203         tmp = RREG32_MC(RS690_AIC_CTRL_SCRATCH);
 204         tmp |= RS690_DIS_OUT_OF_PCI_GART_ACCESS;
 205         WREG32_MC(RS690_AIC_CTRL_SCRATCH, tmp);
 206         WREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE, 0);
 207 }
 208
 209 void rs400_gart_fini(struct radeon_device *rdev)
 210 {
 211         radeon_gart_fini(rdev);
 212         rs400_gart_disable(rdev);
 213         radeon_gart_table_ram_free(rdev);
 214 }
 215
 216 #define RS400_PTE_UNSNOOPED (1 << 0)
 217 #define RS400_PTE_WRITEABLE (1 << 2)
 218 #define RS400_PTE_READABLE  (1 << 3)
 219
 220 uint64_t rs400_gart_get_page_entry(uint64_t addr, uint32_t flags)
 221 {
 222         uint32_t entry;
 223
 224         entry = (lower_32_bits(addr) & PAGE_MASK) |
 225                 ((upper_32_bits(addr) & 0xff) << 4);
 226         if (flags & RADEON_GART_PAGE_READ)
 227                 entry |= RS400_PTE_READABLE;
 228         if (flags & RADEON_GART_PAGE_WRITE)
 229                 entry |= RS400_PTE_WRITEABLE;
 230         if (!(flags & RADEON_GART_PAGE_SNOOP))
 231                 entry |= RS400_PTE_UNSNOOPED;
 232         return entry;
 233 }
 234
 235 void rs400_gart_set_page(struct radeon_device *rdev, unsigned i,
 236                          uint64_t entry)
 237 {
 238         u32 *gtt = rdev->gart.ptr;
 239         gtt[i] = cpu_to_le32(lower_32_bits(entry));
 240 }
 241
 242 int rs400_mc_wait_for_idle(struct radeon_device *rdev)
 243 {
 244         unsigned i;
 245         uint32_t tmp;
 246
 247         for (i = 0; i < rdev->usec_timeout; i++) {
 248                 /* read MC_STATUS */
 249                 tmp = RREG32(RADEON_MC_STATUS);
 250                 if (tmp & RADEON_MC_IDLE) {
 251                         return 0;
 252                 }
 253                 udelay(1);
 254         }
 255         return -1;
 256 }
 257
 258 static void rs400_gpu_init(struct radeon_device *rdev)
 259 {
 260         /* FIXME: is this correct ? */
 261         r420_pipes_init(rdev);
 262         if (rs400_mc_wait_for_idle(rdev)) {
 263                 pr_warn("rs400: Failed to wait MC idle while programming pipes. Bad things might happen. %08x\n",
 264                         RREG32(RADEON_MC_STATUS));
 265         }
 266 }
 267
 268 static void rs400_mc_init(struct radeon_device *rdev)
 269 {
 270         u64 base;
 271
 272         rs400_gart_adjust_size(rdev);
 273         rdev->mc.igp_sideport_enabled = radeon_combios_sideport_present(rdev);
 274         /* DDR for all card after R300 & IGP */
 275         rdev->mc.vram_is_ddr = true;
 276         rdev->mc.vram_width = 128;
 277         r100_vram_init_sizes(rdev);
 278         base = (RREG32(RADEON_NB_TOM) & 0xffff) << 16;
 279         radeon_vram_location(rdev, &rdev->mc, base);
 280         rdev->mc.gtt_base_align = rdev->mc.gtt_size - 1;
 281         radeon_gtt_location(rdev, &rdev->mc);
 282         radeon_update_bandwidth_info(rdev);
 283 }
 284
 285 uint32_t rs400_mc_rreg(struct radeon_device *rdev, uint32_t reg)
 286 {
 287         unsigned long flags;
 288         uint32_t r;
 289
 290         spin_lock_irqsave(&rdev->mc_idx_lock, flags);
 291         WREG32(RS480_NB_MC_INDEX, reg & 0xff);
 292         r = RREG32(RS480_NB_MC_DATA);
 293         WREG32(RS480_NB_MC_INDEX, 0xff);
 294         spin_unlock_irqrestore(&rdev->mc_idx_lock, flags);
 295         return r;
 296 }
 297
 298 void rs400_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)
 299 {
 300         unsigned long flags;
 301
 302         spin_lock_irqsave(&rdev->mc_idx_lock, flags);
 303         WREG32(RS480_NB_MC_INDEX, ((reg) & 0xff) | RS480_NB_MC_IND_WR_EN);
 304         WREG32(RS480_NB_MC_DATA, (v));
 305         WREG32(RS480_NB_MC_INDEX, 0xff);
 306         spin_unlock_irqrestore(&rdev->mc_idx_lock, flags);
 307 }
 308
 309 #if defined(CONFIG_DEBUG_FS)
 310 static int rs400_debugfs_gart_info(struct seq_file *m, void *data)
 311 {
 312         struct drm_info_node *node = (struct drm_info_node *) m->private;
 313         struct drm_device *dev = node->minor->dev;
 314         struct radeon_device *rdev = dev->dev_private;
 315         uint32_t tmp;
 316
 317         tmp = RREG32(RADEON_HOST_PATH_CNTL);
 318         seq_printf(m, "HOST_PATH_CNTL 0x%08x\n", tmp);
 319         tmp = RREG32(RADEON_BUS_CNTL);
 320         seq_printf(m, "BUS_CNTL 0x%08x\n", tmp);
 321         tmp = RREG32_MC(RS690_AIC_CTRL_SCRATCH);
 322         seq_printf(m, "AIC_CTRL_SCRATCH 0x%08x\n", tmp);
 323         if (rdev->family == CHIP_RS690 || (rdev->family == CHIP_RS740)) {
 324                 tmp = RREG32_MC(RS690_MCCFG_AGP_BASE);
 325                 seq_printf(m, "MCCFG_AGP_BASE 0x%08x\n", tmp);
 326                 tmp = RREG32_MC(RS690_MCCFG_AGP_BASE_2);
 327                 seq_printf(m, "MCCFG_AGP_BASE_2 0x%08x\n", tmp);
 328                 tmp = RREG32_MC(RS690_MCCFG_AGP_LOCATION);
 329                 seq_printf(m, "MCCFG_AGP_LOCATION 0x%08x\n", tmp);
 330                 tmp = RREG32_MC(RS690_MCCFG_FB_LOCATION);
 331                 seq_printf(m, "MCCFG_FB_LOCATION 0x%08x\n", tmp);
 332                 tmp = RREG32(RS690_HDP_FB_LOCATION);
 333                 seq_printf(m, "HDP_FB_LOCATION 0x%08x\n", tmp);
 334         } else {
 335                 tmp = RREG32(RADEON_AGP_BASE);
 336                 seq_printf(m, "AGP_BASE 0x%08x\n", tmp);
 337                 tmp = RREG32(RS480_AGP_BASE_2);
 338                 seq_printf(m, "AGP_BASE_2 0x%08x\n", tmp);
 339                 tmp = RREG32(RADEON_MC_AGP_LOCATION);
 340                 seq_printf(m, "MC_AGP_LOCATION 0x%08x\n", tmp);
 341         }
 342         tmp = RREG32_MC(RS480_GART_BASE);
 343         seq_printf(m, "GART_BASE 0x%08x\n", tmp);
 344         tmp = RREG32_MC(RS480_GART_FEATURE_ID);
 345         seq_printf(m, "GART_FEATURE_ID 0x%08x\n", tmp);
 346         tmp = RREG32_MC(RS480_AGP_MODE_CNTL);
 347         seq_printf(m, "AGP_MODE_CONTROL 0x%08x\n", tmp);
 348         tmp = RREG32_MC(RS480_MC_MISC_CNTL);
 349         seq_printf(m, "MC_MISC_CNTL 0x%08x\n", tmp);
 350         tmp = RREG32_MC(0x5F);
 351         seq_printf(m, "MC_MISC_UMA_CNTL 0x%08x\n", tmp);
 352         tmp = RREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE);
 353         seq_printf(m, "AGP_ADDRESS_SPACE_SIZE 0x%08x\n", tmp);
 354         tmp = RREG32_MC(RS480_GART_CACHE_CNTRL);
 355         seq_printf(m, "GART_CACHE_CNTRL 0x%08x\n", tmp);
 356         tmp = RREG32_MC(0x3B);
 357         seq_printf(m, "MC_GART_ERROR_ADDRESS 0x%08x\n", tmp);
 358         tmp = RREG32_MC(0x3C);
 359         seq_printf(m, "MC_GART_ERROR_ADDRESS_HI 0x%08x\n", tmp);
 360         tmp = RREG32_MC(0x30);
 361         seq_printf(m, "GART_ERROR_0 0x%08x\n", tmp);
 362         tmp = RREG32_MC(0x31);
 363         seq_printf(m, "GART_ERROR_1 0x%08x\n", tmp);
 364         tmp = RREG32_MC(0x32);
 365         seq_printf(m, "GART_ERROR_2 0x%08x\n", tmp);
 366         tmp = RREG32_MC(0x33);
 367         seq_printf(m, "GART_ERROR_3 0x%08x\n", tmp);
 368         tmp = RREG32_MC(0x34);
 369         seq_printf(m, "GART_ERROR_4 0x%08x\n", tmp);
 370         tmp = RREG32_MC(0x35);
 371         seq_printf(m, "GART_ERROR_5 0x%08x\n", tmp);
 372         tmp = RREG32_MC(0x36);
 373         seq_printf(m, "GART_ERROR_6 0x%08x\n", tmp);
 374         tmp = RREG32_MC(0x37);
 375         seq_printf(m, "GART_ERROR_7 0x%08x\n", tmp);
 376         return 0;
 377 }
 378
 379 static struct drm_info_list rs400_gart_info_list[] = {
 380         {"rs400_gart_info", rs400_debugfs_gart_info, 0, NULL},
 381 };
 382 #endif
 383
 384 static int rs400_debugfs_pcie_gart_info_init(struct radeon_device *rdev)
 385 {
 386 #if defined(CONFIG_DEBUG_FS)
 387         return radeon_debugfs_add_files(rdev, rs400_gart_info_list, 1);
 388 #else
 389         return 0;
 390 #endif
 391 }
 392
 393 static void rs400_mc_program(struct radeon_device *rdev)
 394 {
 395         struct r100_mc_save save;
 396
 397         /* Stops all mc clients */
 398         r100_mc_stop(rdev, &save);
 399
 400         /* Wait for mc idle */
 401         if (rs400_mc_wait_for_idle(rdev))
 402                 dev_warn(rdev->dev, "rs400: Wait MC idle timeout before updating MC.\n");
 403         WREG32(R_000148_MC_FB_LOCATION,
 404                 S_000148_MC_FB_START(rdev->mc.vram_start >> 16) |
 405                 S_000148_MC_FB_TOP(rdev->mc.vram_end >> 16));
 406
 407         r100_mc_resume(rdev, &save);
 408 }
 409
 410 static int rs400_startup(struct radeon_device *rdev)
 411 {
 412         int r;
 413
 414         r100_set_common_regs(rdev);
 415
 416         rs400_mc_program(rdev);
 417         /* Resume clock */
 418         r300_clock_startup(rdev);
 419         /* Initialize GPU configuration (# pipes, ...) */
 420         rs400_gpu_init(rdev);
 421         r100_enable_bm(rdev);
 422         /* Initialize GART (initialize after TTM so we can allocate
 423          * memory through TTM but finalize after TTM) */
 424         r = rs400_gart_enable(rdev);
 425         if (r)
 426                 return r;
 427
 428         /* allocate wb buffer */
 429         r = radeon_wb_init(rdev);
 430         if (r)
 431                 return r;
 432
 433         r = radeon_fence_driver_start_ring(rdev, RADEON_RING_TYPE_GFX_INDEX);
 434         if (r) {
 435                 dev_err(rdev->dev, "failed initializing CP fences (%d).\n", r);
 436                 return r;
 437         }
 438
 439         /* Enable IRQ */
 440         if (!rdev->irq.installed) {
 441                 r = radeon_irq_kms_init(rdev);
 442                 if (r)
 443                         return r;
 444         }
 445
 446         r100_irq_set(rdev);
 447         rdev->config.r300.hdp_cntl = RREG32(RADEON_HOST_PATH_CNTL);
 448         /* 1M ring buffer */
 449         r = r100_cp_init(rdev, 1024 * 1024);
 450         if (r) {
 451                 dev_err(rdev->dev, "failed initializing CP (%d).\n", r);
 452                 return r;
 453         }
 454
 455         r = radeon_ib_pool_init(rdev);
 456         if (r) {
 457                 dev_err(rdev->dev, "IB initialization failed (%d).\n", r);
 458                 return r;
 459         }
 460
 461         return 0;
 462 }
 463
 464 int rs400_resume(struct radeon_device *rdev)
 465 {
 466         int r;
 467
 468         /* Make sur GART are not working */
 469         rs400_gart_disable(rdev);
 470         /* Resume clock before doing reset */
 471         r300_clock_startup(rdev);
 472         /* setup MC before calling post tables */
 473         rs400_mc_program(rdev);
 474         /* Reset gpu before posting otherwise ATOM will enter infinite loop */
 475         if (radeon_asic_reset(rdev)) {
 476                 dev_warn(rdev->dev, "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
 477                         RREG32(R_000E40_RBBM_STATUS),
 478                         RREG32(R_0007C0_CP_STAT));
 479         }
 480         /* post */
 481         radeon_combios_asic_init(rdev->ddev);
 482         /* Resume clock after posting */
 483         r300_clock_startup(rdev);
 484         /* Initialize surface registers */
 485         radeon_surface_init(rdev);
 486
 487         rdev->accel_working = true;
 488         r = rs400_startup(rdev);
 489         if (r) {
 490                 rdev->accel_working = false;
 491         }
 492         return r;
 493 }
 494
 495 int rs400_suspend(struct radeon_device *rdev)
 496 {
 497         radeon_pm_suspend(rdev);
 498         r100_cp_disable(rdev);
 499         radeon_wb_disable(rdev);
 500         r100_irq_disable(rdev);
 501         rs400_gart_disable(rdev);
 502         return 0;
 503 }
 504
 505 void rs400_fini(struct radeon_device *rdev)
 506 {
 507         radeon_pm_fini(rdev);
 508         r100_cp_fini(rdev);
 509         radeon_wb_fini(rdev);
 510         radeon_ib_pool_fini(rdev);
 511         radeon_gem_fini(rdev);
 512         rs400_gart_fini(rdev);
 513         radeon_irq_kms_fini(rdev);
 514         radeon_fence_driver_fini(rdev);
 515         radeon_bo_fini(rdev);
 516         radeon_atombios_fini(rdev);
 517         kfree(rdev->bios);
 518         rdev->bios = NULL;
 519 }
 520
 521 int rs400_init(struct radeon_device *rdev)
 522 {
 523         int r;
 524
 525         /* Disable VGA */
 526         r100_vga_render_disable(rdev);
 527         /* Initialize scratch registers */
 528         radeon_scratch_init(rdev);
 529         /* Initialize surface registers */
 530         radeon_surface_init(rdev);
 531         /* TODO: disable VGA need to use VGA request */
 532         /* restore some register to sane defaults */
 533         r100_restore_sanity(rdev);
 534         /* BIOS*/
 535         if (!radeon_get_bios(rdev)) {
 536                 if (ASIC_IS_AVIVO(rdev))
 537                         return -EINVAL;
 538         }
 539         if (rdev->is_atom_bios) {
 540                 dev_err(rdev->dev, "Expecting combios for RS400/RS480 GPU\n");
 541                 return -EINVAL;
 542         } else {
 543                 r = radeon_combios_init(rdev);
 544                 if (r)
 545                         return r;
 546         }
 547         /* Reset gpu before posting otherwise ATOM will enter infinite loop */
 548         if (radeon_asic_reset(rdev)) {
 549                 dev_warn(rdev->dev,
 550                         "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
 551                         RREG32(R_000E40_RBBM_STATUS),
 552                         RREG32(R_0007C0_CP_STAT));
 553         }
 554         /* check if cards are posted or not */
 555         if (radeon_boot_test_post_card(rdev) == false)
 556                 return -EINVAL;
 557
 558         /* Initialize clocks */
 559         radeon_get_clock_info(rdev->ddev);
 560         /* initialize memory controller */
 561         rs400_mc_init(rdev);
 562         /* Fence driver */
 563         r = radeon_fence_driver_init(rdev);
 564         if (r)
 565                 return r;
 566         /* Memory manager */
 567         r = radeon_bo_init(rdev);
 568         if (r)
 569                 return r;
 570         r = rs400_gart_init(rdev);
 571         if (r)
 572                 return r;
 573         r300_set_reg_safe(rdev);
 574
 575         /* Initialize power management */
 576         radeon_pm_init(rdev);
 577
 578         rdev->accel_working = true;
 579         r = rs400_startup(rdev);
 580         if (r) {
 581                 /* Somethings want wront with the accel init stop accel */
 582                 dev_err(rdev->dev, "Disabling GPU acceleration\n");
 583                 r100_cp_fini(rdev);
 584                 radeon_wb_fini(rdev);
 585                 radeon_ib_pool_fini(rdev);
 586                 rs400_gart_fini(rdev);
 587                 radeon_irq_kms_fini(rdev);
 588                 rdev->accel_working = false;
 589         }
 590         return 0;
 591 }