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 <linux/slab.h>
  30 #include <drm/drmP.h>
  31 #include <drm/drm_crtc_helper.h>
  32 #include <drm/radeon_drm.h>
  33 #include <linux/vgaarb.h>
  34 #include <linux/vga_switcheroo.h>
  35 #include <linux/efi.h>
  36 #include "radeon_reg.h"
  37 #include "radeon.h"
  38 #include "atom.h"
  39
  40 static const char radeon_family_name[][16] = {
  41         "R100",
  42         "RV100",
  43         "RS100",
  44         "RV200",
  45         "RS200",
  46         "R200",
  47         "RV250",
  48         "RS300",
  49         "RV280",
  50         "R300",
  51         "R350",
  52         "RV350",
  53         "RV380",
  54         "R420",
  55         "R423",
  56         "RV410",
  57         "RS400",
  58         "RS480",
  59         "RS600",
  60         "RS690",
  61         "RS740",
  62         "RV515",
  63         "R520",
  64         "RV530",
  65         "RV560",
  66         "RV570",
  67         "R580",
  68         "R600",
  69         "RV610",
  70         "RV630",
  71         "RV670",
  72         "RV620",
  73         "RV635",
  74         "RS780",
  75         "RS880",
  76         "RV770",
  77         "RV730",
  78         "RV710",
  79         "RV740",
  80         "CEDAR",
  81         "REDWOOD",
  82         "JUNIPER",
  83         "CYPRESS",
  84         "HEMLOCK",
  85         "PALM",
  86         "SUMO",
  87         "SUMO2",
  88         "BARTS",
  89         "TURKS",
  90         "CAICOS",
  91         "CAYMAN",
  92         "LAST",
  93 };
  94
  95 /*
  96  * Clear GPU surface registers.
  97  */
  98 void radeon_surface_init(struct radeon_device *rdev)
  99 {
 100         /* FIXME: check this out */
 101         if (rdev->family < CHIP_R600) {
 102                 int i;
 103
 104                 for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) {
 105                         if (rdev->surface_regs[i].bo)
 106                                 radeon_bo_get_surface_reg(rdev->surface_regs[i].bo);
 107                         else
 108                                 radeon_clear_surface_reg(rdev, i);
 109                 }
 110                 /* enable surfaces */
 111                 WREG32(RADEON_SURFACE_CNTL, 0);
 112         }
 113 }
 114
 115 /*
 116  * GPU scratch registers helpers function.
 117  */
 118 void radeon_scratch_init(struct radeon_device *rdev)
 119 {
 120         int i;
 121
 122         /* FIXME: check this out */
 123         if (rdev->family < CHIP_R300) {
 124                 rdev->scratch.num_reg = 5;
 125         } else {
 126                 rdev->scratch.num_reg = 7;
 127         }
 128         rdev->scratch.reg_base = RADEON_SCRATCH_REG0;
 129         for (i = 0; i < rdev->scratch.num_reg; i++) {
 130                 rdev->scratch.free[i] = true;
 131                 rdev->scratch.reg[i] = rdev->scratch.reg_base + (i * 4);
 132         }
 133 }
 134
 135 int radeon_scratch_get(struct radeon_device *rdev, uint32_t *reg)
 136 {
 137         int i;
 138
 139         for (i = 0; i < rdev->scratch.num_reg; i++) {
 140                 if (rdev->scratch.free[i]) {
 141                         rdev->scratch.free[i] = false;
 142                         *reg = rdev->scratch.reg[i];
 143                         return 0;
 144                 }
 145         }
 146         return -EINVAL;
 147 }
 148
 149 void radeon_scratch_free(struct radeon_device *rdev, uint32_t reg)
 150 {
 151         int i;
 152
 153         for (i = 0; i < rdev->scratch.num_reg; i++) {
 154                 if (rdev->scratch.reg[i] == reg) {
 155                         rdev->scratch.free[i] = true;
 156                         return;
 157                 }
 158         }
 159 }
 160
 161 void radeon_wb_disable(struct radeon_device *rdev)
 162 {
 163         int r;
 164
 165         if (rdev->wb.wb_obj) {
 166                 r = radeon_bo_reserve(rdev->wb.wb_obj, false);
 167                 if (unlikely(r != 0))
 168                         return;
 169                 radeon_bo_kunmap(rdev->wb.wb_obj);
 170                 radeon_bo_unpin(rdev->wb.wb_obj);
 171                 radeon_bo_unreserve(rdev->wb.wb_obj);
 172         }
 173         rdev->wb.enabled = false;
 174 }
 175
 176 void radeon_wb_fini(struct radeon_device *rdev)
 177 {
 178         radeon_wb_disable(rdev);
 179         if (rdev->wb.wb_obj) {
 180                 radeon_bo_unref(&rdev->wb.wb_obj);
 181                 rdev->wb.wb = NULL;
 182                 rdev->wb.wb_obj = NULL;
 183         }
 184 }
 185
 186 int radeon_wb_init(struct radeon_device *rdev)
 187 {
 188         int r;
 189
 190         if (rdev->wb.wb_obj == NULL) {
 191                 r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE, PAGE_SIZE, true,
 192                                 RADEON_GEM_DOMAIN_GTT, &rdev->wb.wb_obj);
 193                 if (r) {
 194                         dev_warn(rdev->dev, "(%d) create WB bo failed\n", r);
 195                         return r;
 196                 }
 197         }
 198         r = radeon_bo_reserve(rdev->wb.wb_obj, false);
 199         if (unlikely(r != 0)) {
 200                 radeon_wb_fini(rdev);
 201                 return r;
 202         }
 203         r = radeon_bo_pin(rdev->wb.wb_obj, RADEON_GEM_DOMAIN_GTT,
 204                           &rdev->wb.gpu_addr);
 205         if (r) {
 206                 radeon_bo_unreserve(rdev->wb.wb_obj);
 207                 dev_warn(rdev->dev, "(%d) pin WB bo failed\n", r);
 208                 radeon_wb_fini(rdev);
 209                 return r;
 210         }
 211         r = radeon_bo_kmap(rdev->wb.wb_obj, (void **)&rdev->wb.wb);
 212         radeon_bo_unreserve(rdev->wb.wb_obj);
 213         if (r) {
 214                 dev_warn(rdev->dev, "(%d) map WB bo failed\n", r);
 215                 radeon_wb_fini(rdev);
 216                 return r;
 217         }
 218
 219         /* clear wb memory */
 220         memset((char *)rdev->wb.wb, 0, RADEON_GPU_PAGE_SIZE);
 221         /* disable event_write fences */
 222         rdev->wb.use_event = false;
 223         /* disabled via module param */
 224         if (radeon_no_wb == 1)
 225                 rdev->wb.enabled = false;
 226         else {
 227                 /* often unreliable on AGP */
 228                 if (rdev->flags & RADEON_IS_AGP) {
 229                         rdev->wb.enabled = false;
 230                 } else {
 231                         rdev->wb.enabled = true;
 232                         /* event_write fences are only available on r600+ */
 233                         if (rdev->family >= CHIP_R600)
 234                                 rdev->wb.use_event = true;
 235                 }
 236         }
 237         /* always use writeback/events on NI */
 238         if (ASIC_IS_DCE5(rdev)) {
 239                 rdev->wb.enabled = true;
 240                 rdev->wb.use_event = true;
 241         }
 242
 243         dev_info(rdev->dev, "WB %sabled\n", rdev->wb.enabled ? "en" : "dis");
 244
 245         return 0;
 246 }
 247
 248 /**
 249  * radeon_vram_location - try to find VRAM location
 250  * @rdev: radeon device structure holding all necessary informations
 251  * @mc: memory controller structure holding memory informations
 252  * @base: base address at which to put VRAM
 253  *
 254  * Function will place try to place VRAM at base address provided
 255  * as parameter (which is so far either PCI aperture address or
 256  * for IGP TOM base address).
 257  *
 258  * If there is not enough space to fit the unvisible VRAM in the 32bits
 259  * address space then we limit the VRAM size to the aperture.
 260  *
 261  * If we are using AGP and if the AGP aperture doesn't allow us to have
 262  * room for all the VRAM than we restrict the VRAM to the PCI aperture
 263  * size and print a warning.
 264  *
 265  * This function will never fails, worst case are limiting VRAM.
 266  *
 267  * Note: GTT start, end, size should be initialized before calling this
 268  * function on AGP platform.
 269  *
 270  * Note: We don't explicitly enforce VRAM start to be aligned on VRAM size,
 271  * this shouldn't be a problem as we are using the PCI aperture as a reference.
 272  * Otherwise this would be needed for rv280, all r3xx, and all r4xx, but
 273  * not IGP.
 274  *
 275  * Note: we use mc_vram_size as on some board we need to program the mc to
 276  * cover the whole aperture even if VRAM size is inferior to aperture size
 277  * Novell bug 204882 + along with lots of ubuntu ones
 278  *
 279  * Note: when limiting vram it's safe to overwritte real_vram_size because
 280  * we are not in case where real_vram_size is inferior to mc_vram_size (ie
 281  * note afected by bogus hw of Novell bug 204882 + along with lots of ubuntu
 282  * ones)
 283  *
 284  * Note: IGP TOM addr should be the same as the aperture addr, we don't
 285  * explicitly check for that thought.
 286  *
 287  * FIXME: when reducing VRAM size align new size on power of 2.
 288  */
 289 void radeon_vram_location(struct radeon_device *rdev, struct radeon_mc *mc, u64 base)
 290 {
 291         mc->vram_start = base;
 292         if (mc->mc_vram_size > (0xFFFFFFFF - base + 1)) {
 293                 dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n");
 294                 mc->real_vram_size = mc->aper_size;
 295                 mc->mc_vram_size = mc->aper_size;
 296         }
 297         mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
 298         if (rdev->flags & RADEON_IS_AGP && mc->vram_end > mc->gtt_start && mc->vram_start <= mc->gtt_end) {
 299                 dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n");
 300                 mc->real_vram_size = mc->aper_size;
 301                 mc->mc_vram_size = mc->aper_size;
 302         }
 303         mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
 304         if (radeon_vram_limit && radeon_vram_limit < mc->real_vram_size)
 305                 mc->real_vram_size = radeon_vram_limit;
 306         dev_info(rdev->dev, "VRAM: %lluM 0x%016llX - 0x%016llX (%lluM used)\n",
 307                         mc->mc_vram_size >> 20, mc->vram_start,
 308                         mc->vram_end, mc->real_vram_size >> 20);
 309 }
 310
 311 /**
 312  * radeon_gtt_location - try to find GTT location
 313  * @rdev: radeon device structure holding all necessary informations
 314  * @mc: memory controller structure holding memory informations
 315  *
 316  * Function will place try to place GTT before or after VRAM.
 317  *
 318  * If GTT size is bigger than space left then we ajust GTT size.
 319  * Thus function will never fails.
 320  *
 321  * FIXME: when reducing GTT size align new size on power of 2.
 322  */
 323 void radeon_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc)
 324 {
 325         u64 size_af, size_bf;
 326
 327         size_af = ((0xFFFFFFFF - mc->vram_end) + mc->gtt_base_align) & ~mc->gtt_base_align;
 328         size_bf = mc->vram_start & ~mc->gtt_base_align;
 329         if (size_bf > size_af) {
 330                 if (mc->gtt_size > size_bf) {
 331                         dev_warn(rdev->dev, "limiting GTT\n");
 332                         mc->gtt_size = size_bf;
 333                 }
 334                 mc->gtt_start = (mc->vram_start & ~mc->gtt_base_align) - mc->gtt_size;
 335         } else {
 336                 if (mc->gtt_size > size_af) {
 337                         dev_warn(rdev->dev, "limiting GTT\n");
 338                         mc->gtt_size = size_af;
 339                 }
 340                 mc->gtt_start = (mc->vram_end + 1 + mc->gtt_base_align) & ~mc->gtt_base_align;
 341         }
 342         mc->gtt_end = mc->gtt_start + mc->gtt_size - 1;
 343         dev_info(rdev->dev, "GTT: %lluM 0x%016llX - 0x%016llX\n",
 344                         mc->gtt_size >> 20, mc->gtt_start, mc->gtt_end);
 345 }
 346
 347 /*
 348  * GPU helpers function.
 349  */
 350 bool radeon_card_posted(struct radeon_device *rdev)
 351 {
 352         uint32_t reg;
 353
 354         if (efi_enabled && rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE)
 355                 return false;
 356
 357         /* first check CRTCs */
 358         if (ASIC_IS_DCE41(rdev)) {
 359                 reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) |
 360                         RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET);
 361                 if (reg & EVERGREEN_CRTC_MASTER_EN)
 362                         return true;
 363         } else if (ASIC_IS_DCE4(rdev)) {
 364                 reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) |
 365                         RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET) |
 366                         RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC2_REGISTER_OFFSET) |
 367                         RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC3_REGISTER_OFFSET) |
 368                         RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC4_REGISTER_OFFSET) |
 369                         RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC5_REGISTER_OFFSET);
 370                 if (reg & EVERGREEN_CRTC_MASTER_EN)
 371                         return true;
 372         } else if (ASIC_IS_AVIVO(rdev)) {
 373                 reg = RREG32(AVIVO_D1CRTC_CONTROL) |
 374                       RREG32(AVIVO_D2CRTC_CONTROL);
 375                 if (reg & AVIVO_CRTC_EN) {
 376                         return true;
 377                 }
 378         } else {
 379                 reg = RREG32(RADEON_CRTC_GEN_CNTL) |
 380                       RREG32(RADEON_CRTC2_GEN_CNTL);
 381                 if (reg & RADEON_CRTC_EN) {
 382                         return true;
 383                 }
 384         }
 385
 386         /* then check MEM_SIZE, in case the crtcs are off */
 387         if (rdev->family >= CHIP_R600)
 388                 reg = RREG32(R600_CONFIG_MEMSIZE);
 389         else
 390                 reg = RREG32(RADEON_CONFIG_MEMSIZE);
 391
 392         if (reg)
 393                 return true;
 394
 395         return false;
 396
 397 }
 398
 399 void radeon_update_bandwidth_info(struct radeon_device *rdev)
 400 {
 401         fixed20_12 a;
 402         u32 sclk = rdev->pm.current_sclk;
 403         u32 mclk = rdev->pm.current_mclk;
 404
 405         /* sclk/mclk in Mhz */
 406         a.full = dfixed_const(100);
 407         rdev->pm.sclk.full = dfixed_const(sclk);
 408         rdev->pm.sclk.full = dfixed_div(rdev->pm.sclk, a);
 409         rdev->pm.mclk.full = dfixed_const(mclk);
 410         rdev->pm.mclk.full = dfixed_div(rdev->pm.mclk, a);
 411
 412         if (rdev->flags & RADEON_IS_IGP) {
 413                 a.full = dfixed_const(16);
 414                 /* core_bandwidth = sclk(Mhz) * 16 */
 415                 rdev->pm.core_bandwidth.full = dfixed_div(rdev->pm.sclk, a);
 416         }
 417 }
 418
 419 bool radeon_boot_test_post_card(struct radeon_device *rdev)
 420 {
 421         if (radeon_card_posted(rdev))
 422                 return true;
 423
 424         if (rdev->bios) {
 425                 DRM_INFO("GPU not posted. posting now...\n");
 426                 if (rdev->is_atom_bios)
 427                         atom_asic_init(rdev->mode_info.atom_context);
 428                 else
 429                         radeon_combios_asic_init(rdev->ddev);
 430                 return true;
 431         } else {
 432                 dev_err(rdev->dev, "Card not posted and no BIOS - ignoring\n");
 433                 return false;
 434         }
 435 }
 436
 437 int radeon_dummy_page_init(struct radeon_device *rdev)
 438 {
 439         if (rdev->dummy_page.page)
 440                 return 0;
 441         rdev->dummy_page.page = alloc_page(GFP_DMA32 | GFP_KERNEL | __GFP_ZERO);
 442         if (rdev->dummy_page.page == NULL)
 443                 return -ENOMEM;
 444         rdev->dummy_page.addr = pci_map_page(rdev->pdev, rdev->dummy_page.page,
 445                                         0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
 446         if (pci_dma_mapping_error(rdev->pdev, rdev->dummy_page.addr)) {
 447                 dev_err(&rdev->pdev->dev, "Failed to DMA MAP the dummy page\n");
 448                 __free_page(rdev->dummy_page.page);
 449                 rdev->dummy_page.page = NULL;
 450                 return -ENOMEM;
 451         }
 452         return 0;
 453 }
 454
 455 void radeon_dummy_page_fini(struct radeon_device *rdev)
 456 {
 457         if (rdev->dummy_page.page == NULL)
 458                 return;
 459         pci_unmap_page(rdev->pdev, rdev->dummy_page.addr,
 460                         PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
 461         __free_page(rdev->dummy_page.page);
 462         rdev->dummy_page.page = NULL;
 463 }
 464
 465
 466 /* ATOM accessor methods */
 467 static uint32_t cail_pll_read(struct card_info *info, uint32_t reg)
 468 {
 469         struct radeon_device *rdev = info->dev->dev_private;
 470         uint32_t r;
 471
 472         r = rdev->pll_rreg(rdev, reg);
 473         return r;
 474 }
 475
 476 static void cail_pll_write(struct card_info *info, uint32_t reg, uint32_t val)
 477 {
 478         struct radeon_device *rdev = info->dev->dev_private;
 479
 480         rdev->pll_wreg(rdev, reg, val);
 481 }
 482
 483 static uint32_t cail_mc_read(struct card_info *info, uint32_t reg)
 484 {
 485         struct radeon_device *rdev = info->dev->dev_private;
 486         uint32_t r;
 487
 488         r = rdev->mc_rreg(rdev, reg);
 489         return r;
 490 }
 491
 492 static void cail_mc_write(struct card_info *info, uint32_t reg, uint32_t val)
 493 {
 494         struct radeon_device *rdev = info->dev->dev_private;
 495
 496         rdev->mc_wreg(rdev, reg, val);
 497 }
 498
 499 static void cail_reg_write(struct card_info *info, uint32_t reg, uint32_t val)
 500 {
 501         struct radeon_device *rdev = info->dev->dev_private;
 502
 503         WREG32(reg*4, val);
 504 }
 505
 506 static uint32_t cail_reg_read(struct card_info *info, uint32_t reg)
 507 {
 508         struct radeon_device *rdev = info->dev->dev_private;
 509         uint32_t r;
 510
 511         r = RREG32(reg*4);
 512         return r;
 513 }
 514
 515 static void cail_ioreg_write(struct card_info *info, uint32_t reg, uint32_t val)
 516 {
 517         struct radeon_device *rdev = info->dev->dev_private;
 518
 519         WREG32_IO(reg*4, val);
 520 }
 521
 522 static uint32_t cail_ioreg_read(struct card_info *info, uint32_t reg)
 523 {
 524         struct radeon_device *rdev = info->dev->dev_private;
 525         uint32_t r;
 526
 527         r = RREG32_IO(reg*4);
 528         return r;
 529 }
 530
 531 int radeon_atombios_init(struct radeon_device *rdev)
 532 {
 533         struct card_info *atom_card_info =
 534             kzalloc(sizeof(struct card_info), GFP_KERNEL);
 535
 536         if (!atom_card_info)
 537                 return -ENOMEM;
 538
 539         rdev->mode_info.atom_card_info = atom_card_info;
 540         atom_card_info->dev = rdev->ddev;
 541         atom_card_info->reg_read = cail_reg_read;
 542         atom_card_info->reg_write = cail_reg_write;
 543         /* needed for iio ops */
 544         if (rdev->rio_mem) {
 545                 atom_card_info->ioreg_read = cail_ioreg_read;
 546                 atom_card_info->ioreg_write = cail_ioreg_write;
 547         } else {
 548                 DRM_ERROR("Unable to find PCI I/O BAR; using MMIO for ATOM IIO\n");
 549                 atom_card_info->ioreg_read = cail_reg_read;
 550                 atom_card_info->ioreg_write = cail_reg_write;
 551         }
 552         atom_card_info->mc_read = cail_mc_read;
 553         atom_card_info->mc_write = cail_mc_write;
 554         atom_card_info->pll_read = cail_pll_read;
 555         atom_card_info->pll_write = cail_pll_write;
 556
 557         rdev->mode_info.atom_context = atom_parse(atom_card_info, rdev->bios);
 558         mutex_init(&rdev->mode_info.atom_context->mutex);
 559         radeon_atom_initialize_bios_scratch_regs(rdev->ddev);
 560         atom_allocate_fb_scratch(rdev->mode_info.atom_context);
 561         return 0;
 562 }
 563
 564 void radeon_atombios_fini(struct radeon_device *rdev)
 565 {
 566         if (rdev->mode_info.atom_context) {
 567                 kfree(rdev->mode_info.atom_context->scratch);
 568                 kfree(rdev->mode_info.atom_context);
 569         }
 570         kfree(rdev->mode_info.atom_card_info);
 571 }
 572
 573 int radeon_combios_init(struct radeon_device *rdev)
 574 {
 575         radeon_combios_initialize_bios_scratch_regs(rdev->ddev);
 576         return 0;
 577 }
 578
 579 void radeon_combios_fini(struct radeon_device *rdev)
 580 {
 581 }
 582
 583 /* if we get transitioned to only one device, tak VGA back */
 584 static unsigned int radeon_vga_set_decode(void *cookie, bool state)
 585 {
 586         struct radeon_device *rdev = cookie;
 587         radeon_vga_set_state(rdev, state);
 588         if (state)
 589                 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
 590                        VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
 591         else
 592                 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
 593 }
 594
 595 void radeon_check_arguments(struct radeon_device *rdev)
 596 {
 597         /* vramlimit must be a power of two */
 598         switch (radeon_vram_limit) {
 599         case 0:
 600         case 4:
 601         case 8:
 602         case 16:
 603         case 32:
 604         case 64:
 605         case 128:
 606         case 256:
 607         case 512:
 608         case 1024:
 609         case 2048:
 610         case 4096:
 611                 break;
 612         default:
 613                 dev_warn(rdev->dev, "vram limit (%d) must be a power of 2\n",
 614                                 radeon_vram_limit);
 615                 radeon_vram_limit = 0;
 616                 break;
 617         }
 618         radeon_vram_limit = radeon_vram_limit << 20;
 619         /* gtt size must be power of two and greater or equal to 32M */
 620         switch (radeon_gart_size) {
 621         case 4:
 622         case 8:
 623         case 16:
 624                 dev_warn(rdev->dev, "gart size (%d) too small forcing to 512M\n",
 625                                 radeon_gart_size);
 626                 radeon_gart_size = 512;
 627                 break;
 628         case 32:
 629         case 64:
 630         case 128:
 631         case 256:
 632         case 512:
 633         case 1024:
 634         case 2048:
 635         case 4096:
 636                 break;
 637         default:
 638                 dev_warn(rdev->dev, "gart size (%d) must be a power of 2\n",
 639                                 radeon_gart_size);
 640                 radeon_gart_size = 512;
 641                 break;
 642         }
 643         rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024;
 644         /* AGP mode can only be -1, 1, 2, 4, 8 */
 645         switch (radeon_agpmode) {
 646         case -1:
 647         case 0:
 648         case 1:
 649         case 2:
 650         case 4:
 651         case 8:
 652                 break;
 653         default:
 654                 dev_warn(rdev->dev, "invalid AGP mode %d (valid mode: "
 655                                 "-1, 0, 1, 2, 4, 8)\n", radeon_agpmode);
 656                 radeon_agpmode = 0;
 657                 break;
 658         }
 659 }
 660
 661 static void radeon_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
 662 {
 663         struct drm_device *dev = pci_get_drvdata(pdev);
 664         pm_message_t pmm = { .event = PM_EVENT_SUSPEND };
 665         if (state == VGA_SWITCHEROO_ON) {
 666                 printk(KERN_INFO "radeon: switched on\n");
 667                 /* don't suspend or resume card normally */
 668                 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
 669                 radeon_resume_kms(dev);
 670                 dev->switch_power_state = DRM_SWITCH_POWER_ON;
 671                 drm_kms_helper_poll_enable(dev);
 672         } else {
 673                 printk(KERN_INFO "radeon: switched off\n");
 674                 drm_kms_helper_poll_disable(dev);
 675                 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
 676                 radeon_suspend_kms(dev, pmm);
 677                 dev->switch_power_state = DRM_SWITCH_POWER_OFF;
 678         }
 679 }
 680
 681 static bool radeon_switcheroo_can_switch(struct pci_dev *pdev)
 682 {
 683         struct drm_device *dev = pci_get_drvdata(pdev);
 684         bool can_switch;
 685
 686         spin_lock(&dev->count_lock);
 687         can_switch = (dev->open_count == 0);
 688         spin_unlock(&dev->count_lock);
 689         return can_switch;
 690 }
 691
 692
 693 int radeon_device_init(struct radeon_device *rdev,
 694                        struct drm_device *ddev,
 695                        struct pci_dev *pdev,
 696                        uint32_t flags)
 697 {
 698         int r, i;
 699         int dma_bits;
 700
 701         rdev->shutdown = false;
 702         rdev->dev = &pdev->dev;
 703         rdev->ddev = ddev;
 704         rdev->pdev = pdev;
 705         rdev->flags = flags;
 706         rdev->family = flags & RADEON_FAMILY_MASK;
 707         rdev->is_atom_bios = false;
 708         rdev->usec_timeout = RADEON_MAX_USEC_TIMEOUT;
 709         rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024;
 710         rdev->gpu_lockup = false;
 711         rdev->accel_working = false;
 712
 713         DRM_INFO("initializing kernel modesetting (%s 0x%04X:0x%04X 0x%04X:0x%04X).\n",
 714                 radeon_family_name[rdev->family], pdev->vendor, pdev->device,
 715                 pdev->subsystem_vendor, pdev->subsystem_device);
 716
 717         /* mutex initialization are all done here so we
 718          * can recall function without having locking issues */
 719         mutex_init(&rdev->cs_mutex);
 720         mutex_init(&rdev->ib_pool.mutex);
 721         mutex_init(&rdev->cp.mutex);
 722         mutex_init(&rdev->dc_hw_i2c_mutex);
 723         if (rdev->family >= CHIP_R600)
 724                 spin_lock_init(&rdev->ih.lock);
 725         mutex_init(&rdev->gem.mutex);
 726         mutex_init(&rdev->pm.mutex);
 727         mutex_init(&rdev->vram_mutex);
 728         rwlock_init(&rdev->fence_drv.lock);
 729         INIT_LIST_HEAD(&rdev->gem.objects);
 730         init_waitqueue_head(&rdev->irq.vblank_queue);
 731         init_waitqueue_head(&rdev->irq.idle_queue);
 732
 733         /* Set asic functions */
 734         r = radeon_asic_init(rdev);
 735         if (r)
 736                 return r;
 737         radeon_check_arguments(rdev);
 738
 739         /* all of the newer IGP chips have an internal gart
 740          * However some rs4xx report as AGP, so remove that here.
 741          */
 742         if ((rdev->family >= CHIP_RS400) &&
 743             (rdev->flags & RADEON_IS_IGP)) {
 744                 rdev->flags &= ~RADEON_IS_AGP;
 745         }
 746
 747         if (rdev->flags & RADEON_IS_AGP && radeon_agpmode == -1) {
 748                 radeon_agp_disable(rdev);
 749         }
 750
 751         /* set DMA mask + need_dma32 flags.
 752          * PCIE - can handle 40-bits.
 753          * IGP - can handle 40-bits
 754          * AGP - generally dma32 is safest
 755          * PCI - dma32 for legacy pci gart, 40 bits on newer asics
 756          */
 757         rdev->need_dma32 = false;
 758         if (rdev->flags & RADEON_IS_AGP)
 759                 rdev->need_dma32 = true;
 760         if ((rdev->flags & RADEON_IS_PCI) &&
 761             (rdev->family < CHIP_RS400))
 762                 rdev->need_dma32 = true;
 763
 764         dma_bits = rdev->need_dma32 ? 32 : 40;
 765         r = pci_set_dma_mask(rdev->pdev, DMA_BIT_MASK(dma_bits));
 766         if (r) {
 767                 rdev->need_dma32 = true;
 768                 printk(KERN_WARNING "radeon: No suitable DMA available.\n");
 769         }
 770
 771         /* Registers mapping */
 772         /* TODO: block userspace mapping of io register */
 773         rdev->rmmio_base = pci_resource_start(rdev->pdev, 2);
 774         rdev->rmmio_size = pci_resource_len(rdev->pdev, 2);
 775         rdev->rmmio = ioremap(rdev->rmmio_base, rdev->rmmio_size);
 776         if (rdev->rmmio == NULL) {
 777                 return -ENOMEM;
 778         }
 779         DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)rdev->rmmio_base);
 780         DRM_INFO("register mmio size: %u\n", (unsigned)rdev->rmmio_size);
 781
 782         /* io port mapping */
 783         for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
 784                 if (pci_resource_flags(rdev->pdev, i) & IORESOURCE_IO) {
 785                         rdev->rio_mem_size = pci_resource_len(rdev->pdev, i);
 786                         rdev->rio_mem = pci_iomap(rdev->pdev, i, rdev->rio_mem_size);
 787                         break;
 788                 }
 789         }
 790         if (rdev->rio_mem == NULL)
 791                 DRM_ERROR("Unable to find PCI I/O BAR\n");
 792
 793         /* if we have > 1 VGA cards, then disable the radeon VGA resources */
 794         /* this will fail for cards that aren't VGA class devices, just
 795          * ignore it */
 796         vga_client_register(rdev->pdev, rdev, NULL, radeon_vga_set_decode);
 797         vga_switcheroo_register_client(rdev->pdev,
 798                                        radeon_switcheroo_set_state,
 799                                        NULL,
 800                                        radeon_switcheroo_can_switch);
 801
 802         r = radeon_init(rdev);
 803         if (r)
 804                 return r;
 805
 806         if (rdev->flags & RADEON_IS_AGP && !rdev->accel_working) {
 807                 /* Acceleration not working on AGP card try again
 808                  * with fallback to PCI or PCIE GART
 809                  */
 810                 radeon_asic_reset(rdev);
 811                 radeon_fini(rdev);
 812                 radeon_agp_disable(rdev);
 813                 r = radeon_init(rdev);
 814                 if (r)
 815                         return r;
 816         }
 817         if (radeon_testing) {
 818                 radeon_test_moves(rdev);
 819         }
 820         if (radeon_benchmarking) {
 821                 radeon_benchmark(rdev);
 822         }
 823         return 0;
 824 }
 825
 826 void radeon_device_fini(struct radeon_device *rdev)
 827 {
 828         DRM_INFO("radeon: finishing device.\n");
 829         rdev->shutdown = true;
 830         /* evict vram memory */
 831         radeon_bo_evict_vram(rdev);
 832         radeon_fini(rdev);
 833         vga_switcheroo_unregister_client(rdev->pdev);
 834         vga_client_register(rdev->pdev, NULL, NULL, NULL);
 835         if (rdev->rio_mem)
 836                 pci_iounmap(rdev->pdev, rdev->rio_mem);
 837         rdev->rio_mem = NULL;
 838         iounmap(rdev->rmmio);
 839         rdev->rmmio = NULL;
 840 }
 841
 842
 843 /*
 844  * Suspend & resume.
 845  */
 846 int radeon_suspend_kms(struct drm_device *dev, pm_message_t state)
 847 {
 848         struct radeon_device *rdev;
 849         struct drm_crtc *crtc;
 850         struct drm_connector *connector;
 851         int r;
 852
 853         if (dev == NULL || dev->dev_private == NULL) {
 854                 return -ENODEV;
 855         }
 856         if (state.event == PM_EVENT_PRETHAW) {
 857                 return 0;
 858         }
 859         rdev = dev->dev_private;
 860
 861         if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
 862                 return 0;
 863
 864         /* turn off display hw */
 865         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 866                 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
 867         }
 868
 869         /* unpin the front buffers */
 870         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 871                 struct radeon_framebuffer *rfb = to_radeon_framebuffer(crtc->fb);
 872                 struct radeon_bo *robj;
 873
 874                 if (rfb == NULL || rfb->obj == NULL) {
 875                         continue;
 876                 }
 877                 robj = gem_to_radeon_bo(rfb->obj);
 878                 /* don't unpin kernel fb objects */
 879                 if (!radeon_fbdev_robj_is_fb(rdev, robj)) {
 880                         r = radeon_bo_reserve(robj, false);
 881                         if (r == 0) {
 882                                 radeon_bo_unpin(robj);
 883                                 radeon_bo_unreserve(robj);
 884                         }
 885                 }
 886         }
 887         /* evict vram memory */
 888         radeon_bo_evict_vram(rdev);
 889         /* wait for gpu to finish processing current batch */
 890         radeon_fence_wait_last(rdev);
 891
 892         radeon_save_bios_scratch_regs(rdev);
 893
 894         radeon_pm_suspend(rdev);
 895         radeon_suspend(rdev);
 896         radeon_hpd_fini(rdev);
 897         /* evict remaining vram memory */
 898         radeon_bo_evict_vram(rdev);
 899
 900         radeon_agp_suspend(rdev);
 901
 902         pci_save_state(dev->pdev);
 903         if (state.event == PM_EVENT_SUSPEND) {
 904                 /* Shut down the device */
 905                 pci_disable_device(dev->pdev);
 906                 pci_set_power_state(dev->pdev, PCI_D3hot);
 907         }
 908         console_lock();
 909         radeon_fbdev_set_suspend(rdev, 1);
 910         console_unlock();
 911         return 0;
 912 }
 913
 914 int radeon_resume_kms(struct drm_device *dev)
 915 {
 916         struct drm_connector *connector;
 917         struct radeon_device *rdev = dev->dev_private;
 918
 919         if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
 920                 return 0;
 921
 922         console_lock();
 923         pci_set_power_state(dev->pdev, PCI_D0);
 924         pci_restore_state(dev->pdev);
 925         if (pci_enable_device(dev->pdev)) {
 926                 console_unlock();
 927                 return -1;
 928         }
 929         pci_set_master(dev->pdev);
 930         /* resume AGP if in use */
 931         radeon_agp_resume(rdev);
 932         radeon_resume(rdev);
 933         radeon_pm_resume(rdev);
 934         radeon_restore_bios_scratch_regs(rdev);
 935
 936         radeon_fbdev_set_suspend(rdev, 0);
 937         console_unlock();
 938
 939         /* init dig PHYs */
 940         if (rdev->is_atom_bios)
 941                 radeon_atom_encoder_init(rdev);
 942         /* reset hpd state */
 943         radeon_hpd_init(rdev);
 944         /* blat the mode back in */
 945         drm_helper_resume_force_mode(dev);
 946         /* turn on display hw */
 947         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 948                 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
 949         }
 950         return 0;
 951 }
 952
 953 int radeon_gpu_reset(struct radeon_device *rdev)
 954 {
 955         int r;
 956         int resched;
 957
 958         radeon_save_bios_scratch_regs(rdev);
 959         /* block TTM */
 960         resched = ttm_bo_lock_delayed_workqueue(&rdev->mman.bdev);
 961         radeon_suspend(rdev);
 962
 963         r = radeon_asic_reset(rdev);
 964         if (!r) {
 965                 dev_info(rdev->dev, "GPU reset succeed\n");
 966                 radeon_resume(rdev);
 967                 radeon_restore_bios_scratch_regs(rdev);
 968                 drm_helper_resume_force_mode(rdev->ddev);
 969                 ttm_bo_unlock_delayed_workqueue(&rdev->mman.bdev, resched);
 970                 return 0;
 971         }
 972         /* bad news, how to tell it to userspace ? */
 973         dev_info(rdev->dev, "GPU reset failed\n");
 974         return r;
 975 }
 976
 977
 978 /*
 979  * Debugfs
 980  */
 981 struct radeon_debugfs {
 982         struct drm_info_list    *files;
 983         unsigned                num_files;
 984 };
 985 static struct radeon_debugfs _radeon_debugfs[RADEON_DEBUGFS_MAX_COMPONENTS];
 986 static unsigned _radeon_debugfs_count = 0;
 987
 988 int radeon_debugfs_add_files(struct radeon_device *rdev,
 989                              struct drm_info_list *files,
 990                              unsigned nfiles)
 991 {
 992         unsigned i;
 993
 994         for (i = 0; i < _radeon_debugfs_count; i++) {
 995                 if (_radeon_debugfs[i].files == files) {
 996                         /* Already registered */
 997                         return 0;
 998                 }
 999         }
1000
1001         i = _radeon_debugfs_count + 1;
1002         if (i > RADEON_DEBUGFS_MAX_COMPONENTS) {
1003                 DRM_ERROR("Reached maximum number of debugfs components.\n");
1004                 DRM_ERROR("Report so we increase "
1005                           "RADEON_DEBUGFS_MAX_COMPONENTS.\n");
1006                 return -EINVAL;
1007         }
1008         _radeon_debugfs[_radeon_debugfs_count].files = files;
1009         _radeon_debugfs[_radeon_debugfs_count].num_files = nfiles;
1010         _radeon_debugfs_count = i;
1011 #if defined(CONFIG_DEBUG_FS)
1012         drm_debugfs_create_files(files, nfiles,
1013                                  rdev->ddev->control->debugfs_root,
1014                                  rdev->ddev->control);
1015         drm_debugfs_create_files(files, nfiles,
1016                                  rdev->ddev->primary->debugfs_root,
1017                                  rdev->ddev->primary);
1018 #endif
1019         return 0;
1020 }
1021
1022 #if defined(CONFIG_DEBUG_FS)
1023 int radeon_debugfs_init(struct drm_minor *minor)
1024 {
1025         return 0;
1026 }
1027
1028 void radeon_debugfs_cleanup(struct drm_minor *minor)
1029 {
1030         unsigned i;
1031
1032         for (i = 0; i < _radeon_debugfs_count; i++) {
1033                 drm_debugfs_remove_files(_radeon_debugfs[i].files,
1034                                          _radeon_debugfs[i].num_files, minor);
1035         }
1036 }
1037 #endif