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         if (rdev->family == CHIP_RS400 || rdev->family == CHIP_RS480) {
  59                 /* FIXME: RS400 & RS480 seems to have issue with GART size
  60                  * if 4G of system memory (needs more testing) */
  61                 rdev->mc.gtt_size = 32 * 1024 * 1024;
  62                 DRM_ERROR("Forcing to 32M GART size (because of ASIC bug ?)\n");
  63         }
  64 }
  65
  66 void rs400_gart_tlb_flush(struct radeon_device *rdev)
  67 {
  68         uint32_t tmp;
  69         unsigned int timeout = rdev->usec_timeout;
  70
  71         WREG32_MC(RS480_GART_CACHE_CNTRL, RS480_GART_CACHE_INVALIDATE);
  72         do {
  73                 tmp = RREG32_MC(RS480_GART_CACHE_CNTRL);
  74                 if ((tmp & RS480_GART_CACHE_INVALIDATE) == 0)
  75                         break;
  76                 DRM_UDELAY(1);
  77                 timeout--;
  78         } while (timeout > 0);
  79         WREG32_MC(RS480_GART_CACHE_CNTRL, 0);
  80 }
  81
  82 int rs400_gart_init(struct radeon_device *rdev)
  83 {
  84         int r;
  85
  86         if (rdev->gart.table.ram.ptr) {
  87                 WARN(1, "RS400 GART already initialized.\n");
  88                 return 0;
  89         }
  90         /* Check gart size */
  91         switch(rdev->mc.gtt_size / (1024 * 1024)) {
  92         case 32:
  93         case 64:
  94         case 128:
  95         case 256:
  96         case 512:
  97         case 1024:
  98         case 2048:
  99                 break;
 100         default:
 101                 return -EINVAL;
 102         }
 103         /* Initialize common gart structure */
 104         r = radeon_gart_init(rdev);
 105         if (r)
 106                 return r;
 107         if (rs400_debugfs_pcie_gart_info_init(rdev))
 108                 DRM_ERROR("Failed to register debugfs file for RS400 GART !\n");
 109         rdev->gart.table_size = rdev->gart.num_gpu_pages * 4;
 110         return radeon_gart_table_ram_alloc(rdev);
 111 }
 112
 113 int rs400_gart_enable(struct radeon_device *rdev)
 114 {
 115         uint32_t size_reg;
 116         uint32_t tmp;
 117
 118         radeon_gart_restore(rdev);
 119         tmp = RREG32_MC(RS690_AIC_CTRL_SCRATCH);
 120         tmp |= RS690_DIS_OUT_OF_PCI_GART_ACCESS;
 121         WREG32_MC(RS690_AIC_CTRL_SCRATCH, tmp);
 122         /* Check gart size */
 123         switch(rdev->mc.gtt_size / (1024 * 1024)) {
 124         case 32:
 125                 size_reg = RS480_VA_SIZE_32MB;
 126                 break;
 127         case 64:
 128                 size_reg = RS480_VA_SIZE_64MB;
 129                 break;
 130         case 128:
 131                 size_reg = RS480_VA_SIZE_128MB;
 132                 break;
 133         case 256:
 134                 size_reg = RS480_VA_SIZE_256MB;
 135                 break;
 136         case 512:
 137                 size_reg = RS480_VA_SIZE_512MB;
 138                 break;
 139         case 1024:
 140                 size_reg = RS480_VA_SIZE_1GB;
 141                 break;
 142         case 2048:
 143                 size_reg = RS480_VA_SIZE_2GB;
 144                 break;
 145         default:
 146                 return -EINVAL;
 147         }
 148         /* It should be fine to program it to max value */
 149         if (rdev->family == CHIP_RS690 || (rdev->family == CHIP_RS740)) {
 150                 WREG32_MC(RS690_MCCFG_AGP_BASE, 0xFFFFFFFF);
 151                 WREG32_MC(RS690_MCCFG_AGP_BASE_2, 0);
 152         } else {
 153                 WREG32(RADEON_AGP_BASE, 0xFFFFFFFF);
 154                 WREG32(RS480_AGP_BASE_2, 0);
 155         }
 156         tmp = REG_SET(RS690_MC_AGP_TOP, rdev->mc.gtt_end >> 16);
 157         tmp |= REG_SET(RS690_MC_AGP_START, rdev->mc.gtt_start >> 16);
 158         if ((rdev->family == CHIP_RS690) || (rdev->family == CHIP_RS740)) {
 159                 WREG32_MC(RS690_MCCFG_AGP_LOCATION, tmp);
 160                 tmp = RREG32(RADEON_BUS_CNTL) & ~RS600_BUS_MASTER_DIS;
 161                 WREG32(RADEON_BUS_CNTL, tmp);
 162         } else {
 163                 WREG32(RADEON_MC_AGP_LOCATION, tmp);
 164                 tmp = RREG32(RADEON_BUS_CNTL) & ~RADEON_BUS_MASTER_DIS;
 165                 WREG32(RADEON_BUS_CNTL, tmp);
 166         }
 167         /* Table should be in 32bits address space so ignore bits above. */
 168         tmp = (u32)rdev->gart.table_addr & 0xfffff000;
 169         tmp |= (upper_32_bits(rdev->gart.table_addr) & 0xff) << 4;
 170
 171         WREG32_MC(RS480_GART_BASE, tmp);
 172         /* TODO: more tweaking here */
 173         WREG32_MC(RS480_GART_FEATURE_ID,
 174                   (RS480_TLB_ENABLE |
 175                    RS480_GTW_LAC_EN | RS480_1LEVEL_GART));
 176         /* Disable snooping */
 177         WREG32_MC(RS480_AGP_MODE_CNTL,
 178                   (1 << RS480_REQ_TYPE_SNOOP_SHIFT) | RS480_REQ_TYPE_SNOOP_DIS);
 179         /* Disable AGP mode */
 180         /* FIXME: according to doc we should set HIDE_MMCFG_BAR=0,
 181          * AGPMODE30=0 & AGP30ENHANCED=0 in NB_CNTL */
 182         if ((rdev->family == CHIP_RS690) || (rdev->family == CHIP_RS740)) {
 183                 WREG32_MC(RS480_MC_MISC_CNTL,
 184                           (RS480_GART_INDEX_REG_EN | RS690_BLOCK_GFX_D3_EN));
 185         } else {
 186                 WREG32_MC(RS480_MC_MISC_CNTL, RS480_GART_INDEX_REG_EN);
 187         }
 188         /* Enable gart */
 189         WREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE, (RS480_GART_EN | size_reg));
 190         rs400_gart_tlb_flush(rdev);
 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 int rs400_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)
 213 {
 214         uint32_t entry;
 215
 216         if (i < 0 || i > rdev->gart.num_gpu_pages) {
 217                 return -EINVAL;
 218         }
 219
 220         entry = (lower_32_bits(addr) & PAGE_MASK) |
 221                 ((upper_32_bits(addr) & 0xff) << 4) |
 222                 0xc;
 223         entry = cpu_to_le32(entry);
 224         rdev->gart.table.ram.ptr[i] = entry;
 225         return 0;
 226 }
 227
 228 int rs400_mc_wait_for_idle(struct radeon_device *rdev)
 229 {
 230         unsigned i;
 231         uint32_t tmp;
 232
 233         for (i = 0; i < rdev->usec_timeout; i++) {
 234                 /* read MC_STATUS */
 235                 tmp = RREG32(0x0150);
 236                 if (tmp & (1 << 2)) {
 237                         return 0;
 238                 }
 239                 DRM_UDELAY(1);
 240         }
 241         return -1;
 242 }
 243
 244 void rs400_gpu_init(struct radeon_device *rdev)
 245 {
 246         /* FIXME: is this correct ? */
 247         r420_pipes_init(rdev);
 248         if (rs400_mc_wait_for_idle(rdev)) {
 249                 printk(KERN_WARNING "rs400: Failed to wait MC idle while "
 250                        "programming pipes. Bad things might happen. %08x\n", RREG32(0x150));
 251         }
 252 }
 253
 254 void rs400_mc_init(struct radeon_device *rdev)
 255 {
 256         u64 base;
 257
 258         rs400_gart_adjust_size(rdev);
 259         rdev->mc.igp_sideport_enabled = radeon_combios_sideport_present(rdev);
 260         /* DDR for all card after R300 & IGP */
 261         rdev->mc.vram_is_ddr = true;
 262         rdev->mc.vram_width = 128;
 263         r100_vram_init_sizes(rdev);
 264         base = (RREG32(RADEON_NB_TOM) & 0xffff) << 16;
 265         radeon_vram_location(rdev, &rdev->mc, base);
 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         uint32_t r;
 273
 274         WREG32(RS480_NB_MC_INDEX, reg & 0xff);
 275         r = RREG32(RS480_NB_MC_DATA);
 276         WREG32(RS480_NB_MC_INDEX, 0xff);
 277         return r;
 278 }
 279
 280 void rs400_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)
 281 {
 282         WREG32(RS480_NB_MC_INDEX, ((reg) & 0xff) | RS480_NB_MC_IND_WR_EN);
 283         WREG32(RS480_NB_MC_DATA, (v));
 284         WREG32(RS480_NB_MC_INDEX, 0xff);
 285 }
 286
 287 #if defined(CONFIG_DEBUG_FS)
 288 static int rs400_debugfs_gart_info(struct seq_file *m, void *data)
 289 {
 290         struct drm_info_node *node = (struct drm_info_node *) m->private;
 291         struct drm_device *dev = node->minor->dev;
 292         struct radeon_device *rdev = dev->dev_private;
 293         uint32_t tmp;
 294
 295         tmp = RREG32(RADEON_HOST_PATH_CNTL);
 296         seq_printf(m, "HOST_PATH_CNTL 0x%08x\n", tmp);
 297         tmp = RREG32(RADEON_BUS_CNTL);
 298         seq_printf(m, "BUS_CNTL 0x%08x\n", tmp);
 299         tmp = RREG32_MC(RS690_AIC_CTRL_SCRATCH);
 300         seq_printf(m, "AIC_CTRL_SCRATCH 0x%08x\n", tmp);
 301         if (rdev->family == CHIP_RS690 || (rdev->family == CHIP_RS740)) {
 302                 tmp = RREG32_MC(RS690_MCCFG_AGP_BASE);
 303                 seq_printf(m, "MCCFG_AGP_BASE 0x%08x\n", tmp);
 304                 tmp = RREG32_MC(RS690_MCCFG_AGP_BASE_2);
 305                 seq_printf(m, "MCCFG_AGP_BASE_2 0x%08x\n", tmp);
 306                 tmp = RREG32_MC(RS690_MCCFG_AGP_LOCATION);
 307                 seq_printf(m, "MCCFG_AGP_LOCATION 0x%08x\n", tmp);
 308                 tmp = RREG32_MC(0x100);
 309                 seq_printf(m, "MCCFG_FB_LOCATION 0x%08x\n", tmp);
 310                 tmp = RREG32(0x134);
 311                 seq_printf(m, "HDP_FB_LOCATION 0x%08x\n", tmp);
 312         } else {
 313                 tmp = RREG32(RADEON_AGP_BASE);
 314                 seq_printf(m, "AGP_BASE 0x%08x\n", tmp);
 315                 tmp = RREG32(RS480_AGP_BASE_2);
 316                 seq_printf(m, "AGP_BASE_2 0x%08x\n", tmp);
 317                 tmp = RREG32(RADEON_MC_AGP_LOCATION);
 318                 seq_printf(m, "MC_AGP_LOCATION 0x%08x\n", tmp);
 319         }
 320         tmp = RREG32_MC(RS480_GART_BASE);
 321         seq_printf(m, "GART_BASE 0x%08x\n", tmp);
 322         tmp = RREG32_MC(RS480_GART_FEATURE_ID);
 323         seq_printf(m, "GART_FEATURE_ID 0x%08x\n", tmp);
 324         tmp = RREG32_MC(RS480_AGP_MODE_CNTL);
 325         seq_printf(m, "AGP_MODE_CONTROL 0x%08x\n", tmp);
 326         tmp = RREG32_MC(RS480_MC_MISC_CNTL);
 327         seq_printf(m, "MC_MISC_CNTL 0x%08x\n", tmp);
 328         tmp = RREG32_MC(0x5F);
 329         seq_printf(m, "MC_MISC_UMA_CNTL 0x%08x\n", tmp);
 330         tmp = RREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE);
 331         seq_printf(m, "AGP_ADDRESS_SPACE_SIZE 0x%08x\n", tmp);
 332         tmp = RREG32_MC(RS480_GART_CACHE_CNTRL);
 333         seq_printf(m, "GART_CACHE_CNTRL 0x%08x\n", tmp);
 334         tmp = RREG32_MC(0x3B);
 335         seq_printf(m, "MC_GART_ERROR_ADDRESS 0x%08x\n", tmp);
 336         tmp = RREG32_MC(0x3C);
 337         seq_printf(m, "MC_GART_ERROR_ADDRESS_HI 0x%08x\n", tmp);
 338         tmp = RREG32_MC(0x30);
 339         seq_printf(m, "GART_ERROR_0 0x%08x\n", tmp);
 340         tmp = RREG32_MC(0x31);
 341         seq_printf(m, "GART_ERROR_1 0x%08x\n", tmp);
 342         tmp = RREG32_MC(0x32);
 343         seq_printf(m, "GART_ERROR_2 0x%08x\n", tmp);
 344         tmp = RREG32_MC(0x33);
 345         seq_printf(m, "GART_ERROR_3 0x%08x\n", tmp);
 346         tmp = RREG32_MC(0x34);
 347         seq_printf(m, "GART_ERROR_4 0x%08x\n", tmp);
 348         tmp = RREG32_MC(0x35);
 349         seq_printf(m, "GART_ERROR_5 0x%08x\n", tmp);
 350         tmp = RREG32_MC(0x36);
 351         seq_printf(m, "GART_ERROR_6 0x%08x\n", tmp);
 352         tmp = RREG32_MC(0x37);
 353         seq_printf(m, "GART_ERROR_7 0x%08x\n", tmp);
 354         return 0;
 355 }
 356
 357 static struct drm_info_list rs400_gart_info_list[] = {
 358         {"rs400_gart_info", rs400_debugfs_gart_info, 0, NULL},
 359 };
 360 #endif
 361
 362 static int rs400_debugfs_pcie_gart_info_init(struct radeon_device *rdev)
 363 {
 364 #if defined(CONFIG_DEBUG_FS)
 365         return radeon_debugfs_add_files(rdev, rs400_gart_info_list, 1);
 366 #else
 367         return 0;
 368 #endif
 369 }
 370
 371 void rs400_mc_program(struct radeon_device *rdev)
 372 {
 373         struct r100_mc_save save;
 374
 375         /* Stops all mc clients */
 376         r100_mc_stop(rdev, &save);
 377
 378         /* Wait for mc idle */
 379         if (rs400_mc_wait_for_idle(rdev))
 380                 dev_warn(rdev->dev, "rs400: Wait MC idle timeout before updating MC.\n");
 381         WREG32(R_000148_MC_FB_LOCATION,
 382                 S_000148_MC_FB_START(rdev->mc.vram_start >> 16) |
 383                 S_000148_MC_FB_TOP(rdev->mc.vram_end >> 16));
 384
 385         r100_mc_resume(rdev, &save);
 386 }
 387
 388 static int rs400_startup(struct radeon_device *rdev)
 389 {
 390         int r;
 391
 392         r100_set_common_regs(rdev);
 393
 394         rs400_mc_program(rdev);
 395         /* Resume clock */
 396         r300_clock_startup(rdev);
 397         /* Initialize GPU configuration (# pipes, ...) */
 398         rs400_gpu_init(rdev);
 399         r100_enable_bm(rdev);
 400         /* Initialize GART (initialize after TTM so we can allocate
 401          * memory through TTM but finalize after TTM) */
 402         r = rs400_gart_enable(rdev);
 403         if (r)
 404                 return r;
 405         /* Enable IRQ */
 406         r100_irq_set(rdev);
 407         rdev->config.r300.hdp_cntl = RREG32(RADEON_HOST_PATH_CNTL);
 408         /* 1M ring buffer */
 409         r = r100_cp_init(rdev, 1024 * 1024);
 410         if (r) {
 411                 dev_err(rdev->dev, "failled initializing CP (%d).\n", r);
 412                 return r;
 413         }
 414         r = r100_wb_init(rdev);
 415         if (r)
 416                 dev_err(rdev->dev, "failled initializing WB (%d).\n", r);
 417         r = r100_ib_init(rdev);
 418         if (r) {
 419                 dev_err(rdev->dev, "failled initializing IB (%d).\n", r);
 420                 return r;
 421         }
 422         return 0;
 423 }
 424
 425 int rs400_resume(struct radeon_device *rdev)
 426 {
 427         /* Make sur GART are not working */
 428         rs400_gart_disable(rdev);
 429         /* Resume clock before doing reset */
 430         r300_clock_startup(rdev);
 431         /* setup MC before calling post tables */
 432         rs400_mc_program(rdev);
 433         /* Reset gpu before posting otherwise ATOM will enter infinite loop */
 434         if (radeon_asic_reset(rdev)) {
 435                 dev_warn(rdev->dev, "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
 436                         RREG32(R_000E40_RBBM_STATUS),
 437                         RREG32(R_0007C0_CP_STAT));
 438         }
 439         /* post */
 440         radeon_combios_asic_init(rdev->ddev);
 441         /* Resume clock after posting */
 442         r300_clock_startup(rdev);
 443         /* Initialize surface registers */
 444         radeon_surface_init(rdev);
 445         return rs400_startup(rdev);
 446 }
 447
 448 int rs400_suspend(struct radeon_device *rdev)
 449 {
 450         r100_cp_disable(rdev);
 451         r100_wb_disable(rdev);
 452         r100_irq_disable(rdev);
 453         rs400_gart_disable(rdev);
 454         return 0;
 455 }
 456
 457 void rs400_fini(struct radeon_device *rdev)
 458 {
 459         r100_cp_fini(rdev);
 460         r100_wb_fini(rdev);
 461         r100_ib_fini(rdev);
 462         radeon_gem_fini(rdev);
 463         rs400_gart_fini(rdev);
 464         radeon_irq_kms_fini(rdev);
 465         radeon_fence_driver_fini(rdev);
 466         radeon_bo_fini(rdev);
 467         radeon_atombios_fini(rdev);
 468         kfree(rdev->bios);
 469         rdev->bios = NULL;
 470 }
 471
 472 int rs400_init(struct radeon_device *rdev)
 473 {
 474         int r;
 475
 476         /* Disable VGA */
 477         r100_vga_render_disable(rdev);
 478         /* Initialize scratch registers */
 479         radeon_scratch_init(rdev);
 480         /* Initialize surface registers */
 481         radeon_surface_init(rdev);
 482         /* TODO: disable VGA need to use VGA request */
 483         /* BIOS*/
 484         if (!radeon_get_bios(rdev)) {
 485                 if (ASIC_IS_AVIVO(rdev))
 486                         return -EINVAL;
 487         }
 488         if (rdev->is_atom_bios) {
 489                 dev_err(rdev->dev, "Expecting combios for RS400/RS480 GPU\n");
 490                 return -EINVAL;
 491         } else {
 492                 r = radeon_combios_init(rdev);
 493                 if (r)
 494                         return r;
 495         }
 496         /* Reset gpu before posting otherwise ATOM will enter infinite loop */
 497         if (radeon_asic_reset(rdev)) {
 498                 dev_warn(rdev->dev,
 499                         "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
 500                         RREG32(R_000E40_RBBM_STATUS),
 501                         RREG32(R_0007C0_CP_STAT));
 502         }
 503         /* check if cards are posted or not */
 504         if (radeon_boot_test_post_card(rdev) == false)
 505                 return -EINVAL;
 506
 507         /* Initialize clocks */
 508         radeon_get_clock_info(rdev->ddev);
 509         /* initialize memory controller */
 510         rs400_mc_init(rdev);
 511         /* Fence driver */
 512         r = radeon_fence_driver_init(rdev);
 513         if (r)
 514                 return r;
 515         r = radeon_irq_kms_init(rdev);
 516         if (r)
 517                 return r;
 518         /* Memory manager */
 519         r = radeon_bo_init(rdev);
 520         if (r)
 521                 return r;
 522         r = rs400_gart_init(rdev);
 523         if (r)
 524                 return r;
 525         r300_set_reg_safe(rdev);
 526         rdev->accel_working = true;
 527         r = rs400_startup(rdev);
 528         if (r) {
 529                 /* Somethings want wront with the accel init stop accel */
 530                 dev_err(rdev->dev, "Disabling GPU acceleration\n");
 531                 r100_cp_fini(rdev);
 532                 r100_wb_fini(rdev);
 533                 r100_ib_fini(rdev);
 534                 rs400_gart_fini(rdev);
 535                 radeon_irq_kms_fini(rdev);
 536                 rdev->accel_working = false;
 537         }
 538         return 0;
 539 }