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                 if (rdev->flags & RADEON_IS_AGP) {
 228                         /* often unreliable on AGP */
 229                         rdev->wb.enabled = false;
 230                 } else if (rdev->family < CHIP_R300) {
 231                         /* often unreliable on pre-r300 */
 232                         rdev->wb.enabled = false;
 233                 } else {
 234                         rdev->wb.enabled = true;
 235                         /* event_write fences are only available on r600+ */
 236                         if (rdev->family >= CHIP_R600)
 237                                 rdev->wb.use_event = true;
 238                 }
 239         }
 240         /* always use writeback/events on NI */
 241         if (ASIC_IS_DCE5(rdev)) {
 242                 rdev->wb.enabled = true;
 243                 rdev->wb.use_event = true;
 244         }
 245
 246         dev_info(rdev->dev, "WB %sabled\n", rdev->wb.enabled ? "en" : "dis");
 247
 248         return 0;
 249 }
 250
 251 /**
 252  * radeon_vram_location - try to find VRAM location
 253  * @rdev: radeon device structure holding all necessary informations
 254  * @mc: memory controller structure holding memory informations
 255  * @base: base address at which to put VRAM
 256  *
 257  * Function will place try to place VRAM at base address provided
 258  * as parameter (which is so far either PCI aperture address or
 259  * for IGP TOM base address).
 260  *
 261  * If there is not enough space to fit the unvisible VRAM in the 32bits
 262  * address space then we limit the VRAM size to the aperture.
 263  *
 264  * If we are using AGP and if the AGP aperture doesn't allow us to have
 265  * room for all the VRAM than we restrict the VRAM to the PCI aperture
 266  * size and print a warning.
 267  *
 268  * This function will never fails, worst case are limiting VRAM.
 269  *
 270  * Note: GTT start, end, size should be initialized before calling this
 271  * function on AGP platform.
 272  *
 273  * Note: We don't explicitly enforce VRAM start to be aligned on VRAM size,
 274  * this shouldn't be a problem as we are using the PCI aperture as a reference.
 275  * Otherwise this would be needed for rv280, all r3xx, and all r4xx, but
 276  * not IGP.
 277  *
 278  * Note: we use mc_vram_size as on some board we need to program the mc to
 279  * cover the whole aperture even if VRAM size is inferior to aperture size
 280  * Novell bug 204882 + along with lots of ubuntu ones
 281  *
 282  * Note: when limiting vram it's safe to overwritte real_vram_size because
 283  * we are not in case where real_vram_size is inferior to mc_vram_size (ie
 284  * note afected by bogus hw of Novell bug 204882 + along with lots of ubuntu
 285  * ones)
 286  *
 287  * Note: IGP TOM addr should be the same as the aperture addr, we don't
 288  * explicitly check for that thought.
 289  *
 290  * FIXME: when reducing VRAM size align new size on power of 2.
 291  */
 292 void radeon_vram_location(struct radeon_device *rdev, struct radeon_mc *mc, u64 base)
 293 {
 294         mc->vram_start = base;
 295         if (mc->mc_vram_size > (0xFFFFFFFF - base + 1)) {
 296                 dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n");
 297                 mc->real_vram_size = mc->aper_size;
 298                 mc->mc_vram_size = mc->aper_size;
 299         }
 300         mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
 301         if (rdev->flags & RADEON_IS_AGP && mc->vram_end > mc->gtt_start && mc->vram_start <= mc->gtt_end) {
 302                 dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n");
 303                 mc->real_vram_size = mc->aper_size;
 304                 mc->mc_vram_size = mc->aper_size;
 305         }
 306         mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
 307         if (radeon_vram_limit && radeon_vram_limit < mc->real_vram_size)
 308                 mc->real_vram_size = radeon_vram_limit;
 309         dev_info(rdev->dev, "VRAM: %lluM 0x%016llX - 0x%016llX (%lluM used)\n",
 310                         mc->mc_vram_size >> 20, mc->vram_start,
 311                         mc->vram_end, mc->real_vram_size >> 20);
 312 }
 313
 314 /**
 315  * radeon_gtt_location - try to find GTT location
 316  * @rdev: radeon device structure holding all necessary informations
 317  * @mc: memory controller structure holding memory informations
 318  *
 319  * Function will place try to place GTT before or after VRAM.
 320  *
 321  * If GTT size is bigger than space left then we ajust GTT size.
 322  * Thus function will never fails.
 323  *
 324  * FIXME: when reducing GTT size align new size on power of 2.
 325  */
 326 void radeon_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc)
 327 {
 328         u64 size_af, size_bf;
 329
 330         size_af = ((0xFFFFFFFF - mc->vram_end) + mc->gtt_base_align) & ~mc->gtt_base_align;
 331         size_bf = mc->vram_start & ~mc->gtt_base_align;
 332         if (size_bf > size_af) {
 333                 if (mc->gtt_size > size_bf) {
 334                         dev_warn(rdev->dev, "limiting GTT\n");
 335                         mc->gtt_size = size_bf;
 336                 }
 337                 mc->gtt_start = (mc->vram_start & ~mc->gtt_base_align) - mc->gtt_size;
 338         } else {
 339                 if (mc->gtt_size > size_af) {
 340                         dev_warn(rdev->dev, "limiting GTT\n");
 341                         mc->gtt_size = size_af;
 342                 }
 343                 mc->gtt_start = (mc->vram_end + 1 + mc->gtt_base_align) & ~mc->gtt_base_align;
 344         }
 345         mc->gtt_end = mc->gtt_start + mc->gtt_size - 1;
 346         dev_info(rdev->dev, "GTT: %lluM 0x%016llX - 0x%016llX\n",
 347                         mc->gtt_size >> 20, mc->gtt_start, mc->gtt_end);
 348 }
 349
 350 /*
 351  * GPU helpers function.
 352  */
 353 bool radeon_card_posted(struct radeon_device *rdev)
 354 {
 355         uint32_t reg;
 356
 357         if (efi_enabled && rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE)
 358                 return false;
 359
 360         /* first check CRTCs */
 361         if (ASIC_IS_DCE41(rdev)) {
 362                 reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) |
 363                         RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET);
 364                 if (reg & EVERGREEN_CRTC_MASTER_EN)
 365                         return true;
 366         } else if (ASIC_IS_DCE4(rdev)) {
 367                 reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) |
 368                         RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET) |
 369                         RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC2_REGISTER_OFFSET) |
 370                         RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC3_REGISTER_OFFSET) |
 371                         RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC4_REGISTER_OFFSET) |
 372                         RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC5_REGISTER_OFFSET);
 373                 if (reg & EVERGREEN_CRTC_MASTER_EN)
 374                         return true;
 375         } else if (ASIC_IS_AVIVO(rdev)) {
 376                 reg = RREG32(AVIVO_D1CRTC_CONTROL) |
 377                       RREG32(AVIVO_D2CRTC_CONTROL);
 378                 if (reg & AVIVO_CRTC_EN) {
 379                         return true;
 380                 }
 381         } else {
 382                 reg = RREG32(RADEON_CRTC_GEN_CNTL) |
 383                       RREG32(RADEON_CRTC2_GEN_CNTL);
 384                 if (reg & RADEON_CRTC_EN) {
 385                         return true;
 386                 }
 387         }
 388
 389         /* then check MEM_SIZE, in case the crtcs are off */
 390         if (rdev->family >= CHIP_R600)
 391                 reg = RREG32(R600_CONFIG_MEMSIZE);
 392         else
 393                 reg = RREG32(RADEON_CONFIG_MEMSIZE);
 394
 395         if (reg)
 396                 return true;
 397
 398         return false;
 399
 400 }
 401
 402 void radeon_update_bandwidth_info(struct radeon_device *rdev)
 403 {
 404         fixed20_12 a;
 405         u32 sclk = rdev->pm.current_sclk;
 406         u32 mclk = rdev->pm.current_mclk;
 407
 408         /* sclk/mclk in Mhz */
 409         a.full = dfixed_const(100);
 410         rdev->pm.sclk.full = dfixed_const(sclk);
 411         rdev->pm.sclk.full = dfixed_div(rdev->pm.sclk, a);
 412         rdev->pm.mclk.full = dfixed_const(mclk);
 413         rdev->pm.mclk.full = dfixed_div(rdev->pm.mclk, a);
 414
 415         if (rdev->flags & RADEON_IS_IGP) {
 416                 a.full = dfixed_const(16);
 417                 /* core_bandwidth = sclk(Mhz) * 16 */
 418                 rdev->pm.core_bandwidth.full = dfixed_div(rdev->pm.sclk, a);
 419         }
 420 }
 421
 422 bool radeon_boot_test_post_card(struct radeon_device *rdev)
 423 {
 424         if (radeon_card_posted(rdev))
 425                 return true;
 426
 427         if (rdev->bios) {
 428                 DRM_INFO("GPU not posted. posting now...\n");
 429                 if (rdev->is_atom_bios)
 430                         atom_asic_init(rdev->mode_info.atom_context);
 431                 else
 432                         radeon_combios_asic_init(rdev->ddev);
 433                 return true;
 434         } else {
 435                 dev_err(rdev->dev, "Card not posted and no BIOS - ignoring\n");
 436                 return false;
 437         }
 438 }
 439
 440 int radeon_dummy_page_init(struct radeon_device *rdev)
 441 {
 442         if (rdev->dummy_page.page)
 443                 return 0;
 444         rdev->dummy_page.page = alloc_page(GFP_DMA32 | GFP_KERNEL | __GFP_ZERO);
 445         if (rdev->dummy_page.page == NULL)
 446                 return -ENOMEM;
 447         rdev->dummy_page.addr = pci_map_page(rdev->pdev, rdev->dummy_page.page,
 448                                         0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
 449         if (pci_dma_mapping_error(rdev->pdev, rdev->dummy_page.addr)) {
 450                 dev_err(&rdev->pdev->dev, "Failed to DMA MAP the dummy page\n");
 451                 __free_page(rdev->dummy_page.page);
 452                 rdev->dummy_page.page = NULL;
 453                 return -ENOMEM;
 454         }
 455         return 0;
 456 }
 457
 458 void radeon_dummy_page_fini(struct radeon_device *rdev)
 459 {
 460         if (rdev->dummy_page.page == NULL)
 461                 return;
 462         pci_unmap_page(rdev->pdev, rdev->dummy_page.addr,
 463                         PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
 464         __free_page(rdev->dummy_page.page);
 465         rdev->dummy_page.page = NULL;
 466 }
 467
 468
 469 /* ATOM accessor methods */
 470 static uint32_t cail_pll_read(struct card_info *info, uint32_t reg)
 471 {
 472         struct radeon_device *rdev = info->dev->dev_private;
 473         uint32_t r;
 474
 475         r = rdev->pll_rreg(rdev, reg);
 476         return r;
 477 }
 478
 479 static void cail_pll_write(struct card_info *info, uint32_t reg, uint32_t val)
 480 {
 481         struct radeon_device *rdev = info->dev->dev_private;
 482
 483         rdev->pll_wreg(rdev, reg, val);
 484 }
 485
 486 static uint32_t cail_mc_read(struct card_info *info, uint32_t reg)
 487 {
 488         struct radeon_device *rdev = info->dev->dev_private;
 489         uint32_t r;
 490
 491         r = rdev->mc_rreg(rdev, reg);
 492         return r;
 493 }
 494
 495 static void cail_mc_write(struct card_info *info, uint32_t reg, uint32_t val)
 496 {
 497         struct radeon_device *rdev = info->dev->dev_private;
 498
 499         rdev->mc_wreg(rdev, reg, val);
 500 }
 501
 502 static void cail_reg_write(struct card_info *info, uint32_t reg, uint32_t val)
 503 {
 504         struct radeon_device *rdev = info->dev->dev_private;
 505
 506         WREG32(reg*4, val);
 507 }
 508
 509 static uint32_t cail_reg_read(struct card_info *info, uint32_t reg)
 510 {
 511         struct radeon_device *rdev = info->dev->dev_private;
 512         uint32_t r;
 513
 514         r = RREG32(reg*4);
 515         return r;
 516 }
 517
 518 static void cail_ioreg_write(struct card_info *info, uint32_t reg, uint32_t val)
 519 {
 520         struct radeon_device *rdev = info->dev->dev_private;
 521
 522         WREG32_IO(reg*4, val);
 523 }
 524
 525 static uint32_t cail_ioreg_read(struct card_info *info, uint32_t reg)
 526 {
 527         struct radeon_device *rdev = info->dev->dev_private;
 528         uint32_t r;
 529
 530         r = RREG32_IO(reg*4);
 531         return r;
 532 }
 533
 534 int radeon_atombios_init(struct radeon_device *rdev)
 535 {
 536         struct card_info *atom_card_info =
 537             kzalloc(sizeof(struct card_info), GFP_KERNEL);
 538
 539         if (!atom_card_info)
 540                 return -ENOMEM;
 541
 542         rdev->mode_info.atom_card_info = atom_card_info;
 543         atom_card_info->dev = rdev->ddev;
 544         atom_card_info->reg_read = cail_reg_read;
 545         atom_card_info->reg_write = cail_reg_write;
 546         /* needed for iio ops */
 547         if (rdev->rio_mem) {
 548                 atom_card_info->ioreg_read = cail_ioreg_read;
 549                 atom_card_info->ioreg_write = cail_ioreg_write;
 550         } else {
 551                 DRM_ERROR("Unable to find PCI I/O BAR; using MMIO for ATOM IIO\n");
 552                 atom_card_info->ioreg_read = cail_reg_read;
 553                 atom_card_info->ioreg_write = cail_reg_write;
 554         }
 555         atom_card_info->mc_read = cail_mc_read;
 556         atom_card_info->mc_write = cail_mc_write;
 557         atom_card_info->pll_read = cail_pll_read;
 558         atom_card_info->pll_write = cail_pll_write;
 559
 560         rdev->mode_info.atom_context = atom_parse(atom_card_info, rdev->bios);
 561         mutex_init(&rdev->mode_info.atom_context->mutex);
 562         radeon_atom_initialize_bios_scratch_regs(rdev->ddev);
 563         atom_allocate_fb_scratch(rdev->mode_info.atom_context);
 564         return 0;
 565 }
 566
 567 void radeon_atombios_fini(struct radeon_device *rdev)
 568 {
 569         if (rdev->mode_info.atom_context) {
 570                 kfree(rdev->mode_info.atom_context->scratch);
 571                 kfree(rdev->mode_info.atom_context);
 572         }
 573         kfree(rdev->mode_info.atom_card_info);
 574 }
 575
 576 int radeon_combios_init(struct radeon_device *rdev)
 577 {
 578         radeon_combios_initialize_bios_scratch_regs(rdev->ddev);
 579         return 0;
 580 }
 581
 582 void radeon_combios_fini(struct radeon_device *rdev)
 583 {
 584 }
 585
 586 /* if we get transitioned to only one device, tak VGA back */
 587 static unsigned int radeon_vga_set_decode(void *cookie, bool state)
 588 {
 589         struct radeon_device *rdev = cookie;
 590         radeon_vga_set_state(rdev, state);
 591         if (state)
 592                 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
 593                        VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
 594         else
 595                 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
 596 }
 597
 598 void radeon_check_arguments(struct radeon_device *rdev)
 599 {
 600         /* vramlimit must be a power of two */
 601         switch (radeon_vram_limit) {
 602         case 0:
 603         case 4:
 604         case 8:
 605         case 16:
 606         case 32:
 607         case 64:
 608         case 128:
 609         case 256:
 610         case 512:
 611         case 1024:
 612         case 2048:
 613         case 4096:
 614                 break;
 615         default:
 616                 dev_warn(rdev->dev, "vram limit (%d) must be a power of 2\n",
 617                                 radeon_vram_limit);
 618                 radeon_vram_limit = 0;
 619                 break;
 620         }
 621         radeon_vram_limit = radeon_vram_limit << 20;
 622         /* gtt size must be power of two and greater or equal to 32M */
 623         switch (radeon_gart_size) {
 624         case 4:
 625         case 8:
 626         case 16:
 627                 dev_warn(rdev->dev, "gart size (%d) too small forcing to 512M\n",
 628                                 radeon_gart_size);
 629                 radeon_gart_size = 512;
 630                 break;
 631         case 32:
 632         case 64:
 633         case 128:
 634         case 256:
 635         case 512:
 636         case 1024:
 637         case 2048:
 638         case 4096:
 639                 break;
 640         default:
 641                 dev_warn(rdev->dev, "gart size (%d) must be a power of 2\n",
 642                                 radeon_gart_size);
 643                 radeon_gart_size = 512;
 644                 break;
 645         }
 646         rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024;
 647         /* AGP mode can only be -1, 1, 2, 4, 8 */
 648         switch (radeon_agpmode) {
 649         case -1:
 650         case 0:
 651         case 1:
 652         case 2:
 653         case 4:
 654         case 8:
 655                 break;
 656         default:
 657                 dev_warn(rdev->dev, "invalid AGP mode %d (valid mode: "
 658                                 "-1, 0, 1, 2, 4, 8)\n", radeon_agpmode);
 659                 radeon_agpmode = 0;
 660                 break;
 661         }
 662 }
 663
 664 static void radeon_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
 665 {
 666         struct drm_device *dev = pci_get_drvdata(pdev);
 667         pm_message_t pmm = { .event = PM_EVENT_SUSPEND };
 668         if (state == VGA_SWITCHEROO_ON) {
 669                 printk(KERN_INFO "radeon: switched on\n");
 670                 /* don't suspend or resume card normally */
 671                 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
 672                 radeon_resume_kms(dev);
 673                 dev->switch_power_state = DRM_SWITCH_POWER_ON;
 674                 drm_kms_helper_poll_enable(dev);
 675         } else {
 676                 printk(KERN_INFO "radeon: switched off\n");
 677                 drm_kms_helper_poll_disable(dev);
 678                 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
 679                 radeon_suspend_kms(dev, pmm);
 680                 dev->switch_power_state = DRM_SWITCH_POWER_OFF;
 681         }
 682 }
 683
 684 static bool radeon_switcheroo_can_switch(struct pci_dev *pdev)
 685 {
 686         struct drm_device *dev = pci_get_drvdata(pdev);
 687         bool can_switch;
 688
 689         spin_lock(&dev->count_lock);
 690         can_switch = (dev->open_count == 0);
 691         spin_unlock(&dev->count_lock);
 692         return can_switch;
 693 }
 694
 695
 696 int radeon_device_init(struct radeon_device *rdev,
 697                        struct drm_device *ddev,
 698                        struct pci_dev *pdev,
 699                        uint32_t flags)
 700 {
 701         int r, i;
 702         int dma_bits;
 703
 704         rdev->shutdown = false;
 705         rdev->dev = &pdev->dev;
 706         rdev->ddev = ddev;
 707         rdev->pdev = pdev;
 708         rdev->flags = flags;
 709         rdev->family = flags & RADEON_FAMILY_MASK;
 710         rdev->is_atom_bios = false;
 711         rdev->usec_timeout = RADEON_MAX_USEC_TIMEOUT;
 712         rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024;
 713         rdev->gpu_lockup = false;
 714         rdev->accel_working = false;
 715
 716         DRM_INFO("initializing kernel modesetting (%s 0x%04X:0x%04X 0x%04X:0x%04X).\n",
 717                 radeon_family_name[rdev->family], pdev->vendor, pdev->device,
 718                 pdev->subsystem_vendor, pdev->subsystem_device);
 719
 720         /* mutex initialization are all done here so we
 721          * can recall function without having locking issues */
 722         radeon_mutex_init(&rdev->cs_mutex);
 723         mutex_init(&rdev->ib_pool.mutex);
 724         mutex_init(&rdev->cp.mutex);
 725         mutex_init(&rdev->dc_hw_i2c_mutex);
 726         if (rdev->family >= CHIP_R600)
 727                 spin_lock_init(&rdev->ih.lock);
 728         mutex_init(&rdev->gem.mutex);
 729         mutex_init(&rdev->pm.mutex);
 730         mutex_init(&rdev->vram_mutex);
 731         rwlock_init(&rdev->fence_drv.lock);
 732         INIT_LIST_HEAD(&rdev->gem.objects);
 733         init_waitqueue_head(&rdev->irq.vblank_queue);
 734         init_waitqueue_head(&rdev->irq.idle_queue);
 735
 736         /* Set asic functions */
 737         r = radeon_asic_init(rdev);
 738         if (r)
 739                 return r;
 740         radeon_check_arguments(rdev);
 741
 742         /* all of the newer IGP chips have an internal gart
 743          * However some rs4xx report as AGP, so remove that here.
 744          */
 745         if ((rdev->family >= CHIP_RS400) &&
 746             (rdev->flags & RADEON_IS_IGP)) {
 747                 rdev->flags &= ~RADEON_IS_AGP;
 748         }
 749
 750         if (rdev->flags & RADEON_IS_AGP && radeon_agpmode == -1) {
 751                 radeon_agp_disable(rdev);
 752         }
 753
 754         /* set DMA mask + need_dma32 flags.
 755          * PCIE - can handle 40-bits.
 756          * IGP - can handle 40-bits
 757          * AGP - generally dma32 is safest
 758          * PCI - dma32 for legacy pci gart, 40 bits on newer asics
 759          */
 760         rdev->need_dma32 = false;
 761         if (rdev->flags & RADEON_IS_AGP)
 762                 rdev->need_dma32 = true;
 763         if ((rdev->flags & RADEON_IS_PCI) &&
 764             (rdev->family <= CHIP_RS740))
 765                 rdev->need_dma32 = true;
 766
 767         dma_bits = rdev->need_dma32 ? 32 : 40;
 768         r = pci_set_dma_mask(rdev->pdev, DMA_BIT_MASK(dma_bits));
 769         if (r) {
 770                 rdev->need_dma32 = true;
 771                 printk(KERN_WARNING "radeon: No suitable DMA available.\n");
 772         }
 773
 774         /* Registers mapping */
 775         /* TODO: block userspace mapping of io register */
 776         rdev->rmmio_base = pci_resource_start(rdev->pdev, 2);
 777         rdev->rmmio_size = pci_resource_len(rdev->pdev, 2);
 778         rdev->rmmio = ioremap(rdev->rmmio_base, rdev->rmmio_size);
 779         if (rdev->rmmio == NULL) {
 780                 return -ENOMEM;
 781         }
 782         DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)rdev->rmmio_base);
 783         DRM_INFO("register mmio size: %u\n", (unsigned)rdev->rmmio_size);
 784
 785         /* io port mapping */
 786         for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
 787                 if (pci_resource_flags(rdev->pdev, i) & IORESOURCE_IO) {
 788                         rdev->rio_mem_size = pci_resource_len(rdev->pdev, i);
 789                         rdev->rio_mem = pci_iomap(rdev->pdev, i, rdev->rio_mem_size);
 790                         break;
 791                 }
 792         }
 793         if (rdev->rio_mem == NULL)
 794                 DRM_ERROR("Unable to find PCI I/O BAR\n");
 795
 796         /* if we have > 1 VGA cards, then disable the radeon VGA resources */
 797         /* this will fail for cards that aren't VGA class devices, just
 798          * ignore it */
 799         vga_client_register(rdev->pdev, rdev, NULL, radeon_vga_set_decode);
 800         vga_switcheroo_register_client(rdev->pdev,
 801                                        radeon_switcheroo_set_state,
 802                                        NULL,
 803                                        radeon_switcheroo_can_switch);
 804
 805         r = radeon_init(rdev);
 806         if (r)
 807                 return r;
 808
 809         if (rdev->flags & RADEON_IS_AGP && !rdev->accel_working) {
 810                 /* Acceleration not working on AGP card try again
 811                  * with fallback to PCI or PCIE GART
 812                  */
 813                 radeon_asic_reset(rdev);
 814                 radeon_fini(rdev);
 815                 radeon_agp_disable(rdev);
 816                 r = radeon_init(rdev);
 817                 if (r)
 818                         return r;
 819         }
 820         if (radeon_testing) {
 821                 radeon_test_moves(rdev);
 822         }
 823         if (radeon_benchmarking) {
 824                 radeon_benchmark(rdev, radeon_benchmarking);
 825         }
 826         return 0;
 827 }
 828
 829 void radeon_device_fini(struct radeon_device *rdev)
 830 {
 831         DRM_INFO("radeon: finishing device.\n");
 832         rdev->shutdown = true;
 833         /* evict vram memory */
 834         radeon_bo_evict_vram(rdev);
 835         radeon_fini(rdev);
 836         vga_switcheroo_unregister_client(rdev->pdev);
 837         vga_client_register(rdev->pdev, NULL, NULL, NULL);
 838         if (rdev->rio_mem)
 839                 pci_iounmap(rdev->pdev, rdev->rio_mem);
 840         rdev->rio_mem = NULL;
 841         iounmap(rdev->rmmio);
 842         rdev->rmmio = NULL;
 843 }
 844
 845
 846 /*
 847  * Suspend & resume.
 848  */
 849 int radeon_suspend_kms(struct drm_device *dev, pm_message_t state)
 850 {
 851         struct radeon_device *rdev;
 852         struct drm_crtc *crtc;
 853         struct drm_connector *connector;
 854         int r;
 855
 856         if (dev == NULL || dev->dev_private == NULL) {
 857                 return -ENODEV;
 858         }
 859         if (state.event == PM_EVENT_PRETHAW) {
 860                 return 0;
 861         }
 862         rdev = dev->dev_private;
 863
 864         if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
 865                 return 0;
 866
 867         drm_kms_helper_poll_disable(dev);
 868
 869         /* turn off display hw */
 870         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 871                 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
 872         }
 873
 874         /* unpin the front buffers */
 875         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 876                 struct radeon_framebuffer *rfb = to_radeon_framebuffer(crtc->fb);
 877                 struct radeon_bo *robj;
 878
 879                 if (rfb == NULL || rfb->obj == NULL) {
 880                         continue;
 881                 }
 882                 robj = gem_to_radeon_bo(rfb->obj);
 883                 /* don't unpin kernel fb objects */
 884                 if (!radeon_fbdev_robj_is_fb(rdev, robj)) {
 885                         r = radeon_bo_reserve(robj, false);
 886                         if (r == 0) {
 887                                 radeon_bo_unpin(robj);
 888                                 radeon_bo_unreserve(robj);
 889                         }
 890                 }
 891         }
 892         /* evict vram memory */
 893         radeon_bo_evict_vram(rdev);
 894         /* wait for gpu to finish processing current batch */
 895         radeon_fence_wait_last(rdev);
 896
 897         radeon_save_bios_scratch_regs(rdev);
 898
 899         radeon_pm_suspend(rdev);
 900         radeon_suspend(rdev);
 901         radeon_hpd_fini(rdev);
 902         /* evict remaining vram memory */
 903         radeon_bo_evict_vram(rdev);
 904
 905         radeon_agp_suspend(rdev);
 906
 907         pci_save_state(dev->pdev);
 908         if (state.event == PM_EVENT_SUSPEND) {
 909                 /* Shut down the device */
 910                 pci_disable_device(dev->pdev);
 911                 pci_set_power_state(dev->pdev, PCI_D3hot);
 912         }
 913         console_lock();
 914         radeon_fbdev_set_suspend(rdev, 1);
 915         console_unlock();
 916         return 0;
 917 }
 918
 919 int radeon_resume_kms(struct drm_device *dev)
 920 {
 921         struct drm_connector *connector;
 922         struct radeon_device *rdev = dev->dev_private;
 923
 924         if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
 925                 return 0;
 926
 927         console_lock();
 928         pci_set_power_state(dev->pdev, PCI_D0);
 929         pci_restore_state(dev->pdev);
 930         if (pci_enable_device(dev->pdev)) {
 931                 console_unlock();
 932                 return -1;
 933         }
 934         pci_set_master(dev->pdev);
 935         /* resume AGP if in use */
 936         radeon_agp_resume(rdev);
 937         radeon_resume(rdev);
 938         radeon_pm_resume(rdev);
 939         radeon_restore_bios_scratch_regs(rdev);
 940
 941         radeon_fbdev_set_suspend(rdev, 0);
 942         console_unlock();
 943
 944         /* init dig PHYs */
 945         if (rdev->is_atom_bios)
 946                 radeon_atom_encoder_init(rdev);
 947         /* reset hpd state */
 948         radeon_hpd_init(rdev);
 949         /* blat the mode back in */
 950         drm_helper_resume_force_mode(dev);
 951         /* turn on display hw */
 952         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 953                 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
 954         }
 955
 956         drm_kms_helper_poll_enable(dev);
 957         return 0;
 958 }
 959
 960 int radeon_gpu_reset(struct radeon_device *rdev)
 961 {
 962         int r;
 963         int resched;
 964
 965         /* Prevent CS ioctl from interfering */
 966         radeon_mutex_lock(&rdev->cs_mutex);
 967
 968         radeon_save_bios_scratch_regs(rdev);
 969         /* block TTM */
 970         resched = ttm_bo_lock_delayed_workqueue(&rdev->mman.bdev);
 971         radeon_suspend(rdev);
 972
 973         r = radeon_asic_reset(rdev);
 974         if (!r) {
 975                 dev_info(rdev->dev, "GPU reset succeed\n");
 976                 radeon_resume(rdev);
 977                 radeon_restore_bios_scratch_regs(rdev);
 978                 drm_helper_resume_force_mode(rdev->ddev);
 979                 ttm_bo_unlock_delayed_workqueue(&rdev->mman.bdev, resched);
 980         }
 981
 982         radeon_mutex_unlock(&rdev->cs_mutex);
 983
 984         if (r) {
 985                 /* bad news, how to tell it to userspace ? */
 986                 dev_info(rdev->dev, "GPU reset failed\n");
 987         }
 988
 989         return r;
 990 }
 991
 992
 993 /*
 994  * Debugfs
 995  */
 996 struct radeon_debugfs {
 997         struct drm_info_list    *files;
 998         unsigned                num_files;
 999 };
1000 static struct radeon_debugfs _radeon_debugfs[RADEON_DEBUGFS_MAX_COMPONENTS];
1001 static unsigned _radeon_debugfs_count = 0;
1002
1003 int radeon_debugfs_add_files(struct radeon_device *rdev,
1004                              struct drm_info_list *files,
1005                              unsigned nfiles)
1006 {
1007         unsigned i;
1008
1009         for (i = 0; i < _radeon_debugfs_count; i++) {
1010                 if (_radeon_debugfs[i].files == files) {
1011                         /* Already registered */
1012                         return 0;
1013                 }
1014         }
1015
1016         i = _radeon_debugfs_count + 1;
1017         if (i > RADEON_DEBUGFS_MAX_COMPONENTS) {
1018                 DRM_ERROR("Reached maximum number of debugfs components.\n");
1019                 DRM_ERROR("Report so we increase "
1020                           "RADEON_DEBUGFS_MAX_COMPONENTS.\n");
1021                 return -EINVAL;
1022         }
1023         _radeon_debugfs[_radeon_debugfs_count].files = files;
1024         _radeon_debugfs[_radeon_debugfs_count].num_files = nfiles;
1025         _radeon_debugfs_count = i;
1026 #if defined(CONFIG_DEBUG_FS)
1027         drm_debugfs_create_files(files, nfiles,
1028                                  rdev->ddev->control->debugfs_root,
1029                                  rdev->ddev->control);
1030         drm_debugfs_create_files(files, nfiles,
1031                                  rdev->ddev->primary->debugfs_root,
1032                                  rdev->ddev->primary);
1033 #endif
1034         return 0;
1035 }
1036
1037 #if defined(CONFIG_DEBUG_FS)
1038 int radeon_debugfs_init(struct drm_minor *minor)
1039 {
1040         return 0;
1041 }
1042
1043 void radeon_debugfs_cleanup(struct drm_minor *minor)
1044 {
1045         unsigned i;
1046
1047         for (i = 0; i < _radeon_debugfs_count; i++) {
1048                 drm_debugfs_remove_files(_radeon_debugfs[i].files,
1049                                          _radeon_debugfs[i].num_files, minor);
1050         }
1051 }
1052 #endif