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