Pileus Git - ~andy/linux/blob - 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         "ARUBA",
  93         "TAHITI",
  94         "PITCAIRN",
  95         "VERDE",
  96         "LAST",
  97 };
  98
  99 /*
 100  * Clear GPU surface registers.
 101  */
 102 void radeon_surface_init(struct radeon_device *rdev)
 103 {
 104         /* FIXME: check this out */
 105         if (rdev->family < CHIP_R600) {
 106                 int i;
 107
 108                 for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) {
 109                         if (rdev->surface_regs[i].bo)
 110                                 radeon_bo_get_surface_reg(rdev->surface_regs[i].bo);
 111                         else
 112                                 radeon_clear_surface_reg(rdev, i);
 113                 }
 114                 /* enable surfaces */
 115                 WREG32(RADEON_SURFACE_CNTL, 0);
 116         }
 117 }
 118
 119 /*
 120  * GPU scratch registers helpers function.
 121  */
 122 void radeon_scratch_init(struct radeon_device *rdev)
 123 {
 124         int i;
 125
 126         /* FIXME: check this out */
 127         if (rdev->family < CHIP_R300) {
 128                 rdev->scratch.num_reg = 5;
 129         } else {
 130                 rdev->scratch.num_reg = 7;
 131         }
 132         rdev->scratch.reg_base = RADEON_SCRATCH_REG0;
 133         for (i = 0; i < rdev->scratch.num_reg; i++) {
 134                 rdev->scratch.free[i] = true;
 135                 rdev->scratch.reg[i] = rdev->scratch.reg_base + (i * 4);
 136         }
 137 }
 138
 139 int radeon_scratch_get(struct radeon_device *rdev, uint32_t *reg)
 140 {
 141         int i;
 142
 143         for (i = 0; i < rdev->scratch.num_reg; i++) {
 144                 if (rdev->scratch.free[i]) {
 145                         rdev->scratch.free[i] = false;
 146                         *reg = rdev->scratch.reg[i];
 147                         return 0;
 148                 }
 149         }
 150         return -EINVAL;
 151 }
 152
 153 void radeon_scratch_free(struct radeon_device *rdev, uint32_t reg)
 154 {
 155         int i;
 156
 157         for (i = 0; i < rdev->scratch.num_reg; i++) {
 158                 if (rdev->scratch.reg[i] == reg) {
 159                         rdev->scratch.free[i] = true;
 160                         return;
 161                 }
 162         }
 163 }
 164
 165 void radeon_wb_disable(struct radeon_device *rdev)
 166 {
 167         int r;
 168
 169         if (rdev->wb.wb_obj) {
 170                 r = radeon_bo_reserve(rdev->wb.wb_obj, false);
 171                 if (unlikely(r != 0))
 172                         return;
 173                 radeon_bo_kunmap(rdev->wb.wb_obj);
 174                 radeon_bo_unpin(rdev->wb.wb_obj);
 175                 radeon_bo_unreserve(rdev->wb.wb_obj);
 176         }
 177         rdev->wb.enabled = false;
 178 }
 179
 180 void radeon_wb_fini(struct radeon_device *rdev)
 181 {
 182         radeon_wb_disable(rdev);
 183         if (rdev->wb.wb_obj) {
 184                 radeon_bo_unref(&rdev->wb.wb_obj);
 185                 rdev->wb.wb = NULL;
 186                 rdev->wb.wb_obj = NULL;
 187         }
 188 }
 189
 190 int radeon_wb_init(struct radeon_device *rdev)
 191 {
 192         int r;
 193
 194         if (rdev->wb.wb_obj == NULL) {
 195                 r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE, PAGE_SIZE, true,
 196                                 RADEON_GEM_DOMAIN_GTT, &rdev->wb.wb_obj);
 197                 if (r) {
 198                         dev_warn(rdev->dev, "(%d) create WB bo failed\n", r);
 199                         return r;
 200                 }
 201         }
 202         r = radeon_bo_reserve(rdev->wb.wb_obj, false);
 203         if (unlikely(r != 0)) {
 204                 radeon_wb_fini(rdev);
 205                 return r;
 206         }
 207         r = radeon_bo_pin(rdev->wb.wb_obj, RADEON_GEM_DOMAIN_GTT,
 208                           &rdev->wb.gpu_addr);
 209         if (r) {
 210                 radeon_bo_unreserve(rdev->wb.wb_obj);
 211                 dev_warn(rdev->dev, "(%d) pin WB bo failed\n", r);
 212                 radeon_wb_fini(rdev);
 213                 return r;
 214         }
 215         r = radeon_bo_kmap(rdev->wb.wb_obj, (void **)&rdev->wb.wb);
 216         radeon_bo_unreserve(rdev->wb.wb_obj);
 217         if (r) {
 218                 dev_warn(rdev->dev, "(%d) map WB bo failed\n", r);
 219                 radeon_wb_fini(rdev);
 220                 return r;
 221         }
 222
 223         /* clear wb memory */
 224         memset((char *)rdev->wb.wb, 0, RADEON_GPU_PAGE_SIZE);
 225         /* disable event_write fences */
 226         rdev->wb.use_event = false;
 227         /* disabled via module param */
 228         if (radeon_no_wb == 1) {
 229                 rdev->wb.enabled = false;
 230         } else {
 231                 if (rdev->flags & RADEON_IS_AGP) {
 232                         /* often unreliable on AGP */
 233                         rdev->wb.enabled = false;
 234                 } else if (rdev->family < CHIP_R300) {
 235                         /* often unreliable on pre-r300 */
 236                         rdev->wb.enabled = false;
 237                 } else {
 238                         rdev->wb.enabled = true;
 239                         /* event_write fences are only available on r600+ */
 240                         if (rdev->family >= CHIP_R600) {
 241                                 rdev->wb.use_event = true;
 242                         }
 243                 }
 244         }
 245         /* always use writeback/events on NI, APUs */
 246         if (rdev->family >= CHIP_PALM) {
 247                 rdev->wb.enabled = true;
 248                 rdev->wb.use_event = true;
 249         }
 250
 251         dev_info(rdev->dev, "WB %sabled\n", rdev->wb.enabled ? "en" : "dis");
 252
 253         return 0;
 254 }
 255
 256 /**
 257  * radeon_vram_location - try to find VRAM location
 258  * @rdev: radeon device structure holding all necessary informations
 259  * @mc: memory controller structure holding memory informations
 260  * @base: base address at which to put VRAM
 261  *
 262  * Function will place try to place VRAM at base address provided
 263  * as parameter (which is so far either PCI aperture address or
 264  * for IGP TOM base address).
 265  *
 266  * If there is not enough space to fit the unvisible VRAM in the 32bits
 267  * address space then we limit the VRAM size to the aperture.
 268  *
 269  * If we are using AGP and if the AGP aperture doesn't allow us to have
 270  * room for all the VRAM than we restrict the VRAM to the PCI aperture
 271  * size and print a warning.
 272  *
 273  * This function will never fails, worst case are limiting VRAM.
 274  *
 275  * Note: GTT start, end, size should be initialized before calling this
 276  * function on AGP platform.
 277  *
 278  * Note: We don't explicitly enforce VRAM start to be aligned on VRAM size,
 279  * this shouldn't be a problem as we are using the PCI aperture as a reference.
 280  * Otherwise this would be needed for rv280, all r3xx, and all r4xx, but
 281  * not IGP.
 282  *
 283  * Note: we use mc_vram_size as on some board we need to program the mc to
 284  * cover the whole aperture even if VRAM size is inferior to aperture size
 285  * Novell bug 204882 + along with lots of ubuntu ones
 286  *
 287  * Note: when limiting vram it's safe to overwritte real_vram_size because
 288  * we are not in case where real_vram_size is inferior to mc_vram_size (ie
 289  * note afected by bogus hw of Novell bug 204882 + along with lots of ubuntu
 290  * ones)
 291  *
 292  * Note: IGP TOM addr should be the same as the aperture addr, we don't
 293  * explicitly check for that thought.
 294  *
 295  * FIXME: when reducing VRAM size align new size on power of 2.
 296  */
 297 void radeon_vram_location(struct radeon_device *rdev, struct radeon_mc *mc, u64 base)
 298 {
 299         mc->vram_start = base;
 300         if (mc->mc_vram_size > (0xFFFFFFFF - base + 1)) {
 301                 dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n");
 302                 mc->real_vram_size = mc->aper_size;
 303                 mc->mc_vram_size = mc->aper_size;
 304         }
 305         mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
 306         if (rdev->flags & RADEON_IS_AGP && mc->vram_end > mc->gtt_start && mc->vram_start <= mc->gtt_end) {
 307                 dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n");
 308                 mc->real_vram_size = mc->aper_size;
 309                 mc->mc_vram_size = mc->aper_size;
 310         }
 311         mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
 312         if (radeon_vram_limit && radeon_vram_limit < mc->real_vram_size)
 313                 mc->real_vram_size = radeon_vram_limit;
 314         dev_info(rdev->dev, "VRAM: %lluM 0x%016llX - 0x%016llX (%lluM used)\n",
 315                         mc->mc_vram_size >> 20, mc->vram_start,
 316                         mc->vram_end, mc->real_vram_size >> 20);
 317 }
 318
 319 /**
 320  * radeon_gtt_location - try to find GTT location
 321  * @rdev: radeon device structure holding all necessary informations
 322  * @mc: memory controller structure holding memory informations
 323  *
 324  * Function will place try to place GTT before or after VRAM.
 325  *
 326  * If GTT size is bigger than space left then we ajust GTT size.
 327  * Thus function will never fails.
 328  *
 329  * FIXME: when reducing GTT size align new size on power of 2.
 330  */
 331 void radeon_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc)
 332 {
 333         u64 size_af, size_bf;
 334
 335         size_af = ((0xFFFFFFFF - mc->vram_end) + mc->gtt_base_align) & ~mc->gtt_base_align;
 336         size_bf = mc->vram_start & ~mc->gtt_base_align;
 337         if (size_bf > size_af) {
 338                 if (mc->gtt_size > size_bf) {
 339                         dev_warn(rdev->dev, "limiting GTT\n");
 340                         mc->gtt_size = size_bf;
 341                 }
 342                 mc->gtt_start = (mc->vram_start & ~mc->gtt_base_align) - mc->gtt_size;
 343         } else {
 344                 if (mc->gtt_size > size_af) {
 345                         dev_warn(rdev->dev, "limiting GTT\n");
 346                         mc->gtt_size = size_af;
 347                 }
 348                 mc->gtt_start = (mc->vram_end + 1 + mc->gtt_base_align) & ~mc->gtt_base_align;
 349         }
 350         mc->gtt_end = mc->gtt_start + mc->gtt_size - 1;
 351         dev_info(rdev->dev, "GTT: %lluM 0x%016llX - 0x%016llX\n",
 352                         mc->gtt_size >> 20, mc->gtt_start, mc->gtt_end);
 353 }
 354
 355 /*
 356  * GPU helpers function.
 357  */
 358 bool radeon_card_posted(struct radeon_device *rdev)
 359 {
 360         uint32_t reg;
 361
 362         if (efi_enabled && rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE)
 363                 return false;
 364
 365         /* first check CRTCs */
 366         if (ASIC_IS_DCE41(rdev)) {
 367                 reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) |
 368                         RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET);
 369                 if (reg & EVERGREEN_CRTC_MASTER_EN)
 370                         return true;
 371         } else if (ASIC_IS_DCE4(rdev)) {
 372                 reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) |
 373                         RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET) |
 374                         RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC2_REGISTER_OFFSET) |
 375                         RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC3_REGISTER_OFFSET) |
 376                         RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC4_REGISTER_OFFSET) |
 377                         RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC5_REGISTER_OFFSET);
 378                 if (reg & EVERGREEN_CRTC_MASTER_EN)
 379                         return true;
 380         } else if (ASIC_IS_AVIVO(rdev)) {
 381                 reg = RREG32(AVIVO_D1CRTC_CONTROL) |
 382                       RREG32(AVIVO_D2CRTC_CONTROL);
 383                 if (reg & AVIVO_CRTC_EN) {
 384                         return true;
 385                 }
 386         } else {
 387                 reg = RREG32(RADEON_CRTC_GEN_CNTL) |
 388                       RREG32(RADEON_CRTC2_GEN_CNTL);
 389                 if (reg & RADEON_CRTC_EN) {
 390                         return true;
 391                 }
 392         }
 393
 394         /* then check MEM_SIZE, in case the crtcs are off */
 395         if (rdev->family >= CHIP_R600)
 396                 reg = RREG32(R600_CONFIG_MEMSIZE);
 397         else
 398                 reg = RREG32(RADEON_CONFIG_MEMSIZE);
 399
 400         if (reg)
 401                 return true;
 402
 403         return false;
 404
 405 }
 406
 407 void radeon_update_bandwidth_info(struct radeon_device *rdev)
 408 {
 409         fixed20_12 a;
 410         u32 sclk = rdev->pm.current_sclk;
 411         u32 mclk = rdev->pm.current_mclk;
 412
 413         /* sclk/mclk in Mhz */
 414         a.full = dfixed_const(100);
 415         rdev->pm.sclk.full = dfixed_const(sclk);
 416         rdev->pm.sclk.full = dfixed_div(rdev->pm.sclk, a);
 417         rdev->pm.mclk.full = dfixed_const(mclk);
 418         rdev->pm.mclk.full = dfixed_div(rdev->pm.mclk, a);
 419
 420         if (rdev->flags & RADEON_IS_IGP) {
 421                 a.full = dfixed_const(16);
 422                 /* core_bandwidth = sclk(Mhz) * 16 */
 423                 rdev->pm.core_bandwidth.full = dfixed_div(rdev->pm.sclk, a);
 424         }
 425 }
 426
 427 bool radeon_boot_test_post_card(struct radeon_device *rdev)
 428 {
 429         if (radeon_card_posted(rdev))
 430                 return true;
 431
 432         if (rdev->bios) {
 433                 DRM_INFO("GPU not posted. posting now...\n");
 434                 if (rdev->is_atom_bios)
 435                         atom_asic_init(rdev->mode_info.atom_context);
 436                 else
 437                         radeon_combios_asic_init(rdev->ddev);
 438                 return true;
 439         } else {
 440                 dev_err(rdev->dev, "Card not posted and no BIOS - ignoring\n");
 441                 return false;
 442         }
 443 }
 444
 445 int radeon_dummy_page_init(struct radeon_device *rdev)
 446 {
 447         if (rdev->dummy_page.page)
 448                 return 0;
 449         rdev->dummy_page.page = alloc_page(GFP_DMA32 | GFP_KERNEL | __GFP_ZERO);
 450         if (rdev->dummy_page.page == NULL)
 451                 return -ENOMEM;
 452         rdev->dummy_page.addr = pci_map_page(rdev->pdev, rdev->dummy_page.page,
 453                                         0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
 454         if (pci_dma_mapping_error(rdev->pdev, rdev->dummy_page.addr)) {
 455                 dev_err(&rdev->pdev->dev, "Failed to DMA MAP the dummy page\n");
 456                 __free_page(rdev->dummy_page.page);
 457                 rdev->dummy_page.page = NULL;
 458                 return -ENOMEM;
 459         }
 460         return 0;
 461 }
 462
 463 void radeon_dummy_page_fini(struct radeon_device *rdev)
 464 {
 465         if (rdev->dummy_page.page == NULL)
 466                 return;
 467         pci_unmap_page(rdev->pdev, rdev->dummy_page.addr,
 468                         PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
 469         __free_page(rdev->dummy_page.page);
 470         rdev->dummy_page.page = NULL;
 471 }
 472
 473
 474 /* ATOM accessor methods */
 475 static uint32_t cail_pll_read(struct card_info *info, uint32_t reg)
 476 {
 477         struct radeon_device *rdev = info->dev->dev_private;
 478         uint32_t r;
 479
 480         r = rdev->pll_rreg(rdev, reg);
 481         return r;
 482 }
 483
 484 static void cail_pll_write(struct card_info *info, uint32_t reg, uint32_t val)
 485 {
 486         struct radeon_device *rdev = info->dev->dev_private;
 487
 488         rdev->pll_wreg(rdev, reg, val);
 489 }
 490
 491 static uint32_t cail_mc_read(struct card_info *info, uint32_t reg)
 492 {
 493         struct radeon_device *rdev = info->dev->dev_private;
 494         uint32_t r;
 495
 496         r = rdev->mc_rreg(rdev, reg);
 497         return r;
 498 }
 499
 500 static void cail_mc_write(struct card_info *info, uint32_t reg, uint32_t val)
 501 {
 502         struct radeon_device *rdev = info->dev->dev_private;
 503
 504         rdev->mc_wreg(rdev, reg, val);
 505 }
 506
 507 static void cail_reg_write(struct card_info *info, uint32_t reg, uint32_t val)
 508 {
 509         struct radeon_device *rdev = info->dev->dev_private;
 510
 511         WREG32(reg*4, val);
 512 }
 513
 514 static uint32_t cail_reg_read(struct card_info *info, uint32_t reg)
 515 {
 516         struct radeon_device *rdev = info->dev->dev_private;
 517         uint32_t r;
 518
 519         r = RREG32(reg*4);
 520         return r;
 521 }
 522
 523 static void cail_ioreg_write(struct card_info *info, uint32_t reg, uint32_t val)
 524 {
 525         struct radeon_device *rdev = info->dev->dev_private;
 526
 527         WREG32_IO(reg*4, val);
 528 }
 529
 530 static uint32_t cail_ioreg_read(struct card_info *info, uint32_t reg)
 531 {
 532         struct radeon_device *rdev = info->dev->dev_private;
 533         uint32_t r;
 534
 535         r = RREG32_IO(reg*4);
 536         return r;
 537 }
 538
 539 int radeon_atombios_init(struct radeon_device *rdev)
 540 {
 541         struct card_info *atom_card_info =
 542             kzalloc(sizeof(struct card_info), GFP_KERNEL);
 543
 544         if (!atom_card_info)
 545                 return -ENOMEM;
 546
 547         rdev->mode_info.atom_card_info = atom_card_info;
 548         atom_card_info->dev = rdev->ddev;
 549         atom_card_info->reg_read = cail_reg_read;
 550         atom_card_info->reg_write = cail_reg_write;
 551         /* needed for iio ops */
 552         if (rdev->rio_mem) {
 553                 atom_card_info->ioreg_read = cail_ioreg_read;
 554                 atom_card_info->ioreg_write = cail_ioreg_write;
 555         } else {
 556                 DRM_ERROR("Unable to find PCI I/O BAR; using MMIO for ATOM IIO\n");
 557                 atom_card_info->ioreg_read = cail_reg_read;
 558                 atom_card_info->ioreg_write = cail_reg_write;
 559         }
 560         atom_card_info->mc_read = cail_mc_read;
 561         atom_card_info->mc_write = cail_mc_write;
 562         atom_card_info->pll_read = cail_pll_read;
 563         atom_card_info->pll_write = cail_pll_write;
 564
 565         rdev->mode_info.atom_context = atom_parse(atom_card_info, rdev->bios);
 566         mutex_init(&rdev->mode_info.atom_context->mutex);
 567         radeon_atom_initialize_bios_scratch_regs(rdev->ddev);
 568         atom_allocate_fb_scratch(rdev->mode_info.atom_context);
 569         return 0;
 570 }
 571
 572 void radeon_atombios_fini(struct radeon_device *rdev)
 573 {
 574         if (rdev->mode_info.atom_context) {
 575                 kfree(rdev->mode_info.atom_context->scratch);
 576                 kfree(rdev->mode_info.atom_context);
 577         }
 578         kfree(rdev->mode_info.atom_card_info);
 579 }
 580
 581 int radeon_combios_init(struct radeon_device *rdev)
 582 {
 583         radeon_combios_initialize_bios_scratch_regs(rdev->ddev);
 584         return 0;
 585 }
 586
 587 void radeon_combios_fini(struct radeon_device *rdev)
 588 {
 589 }
 590
 591 /* if we get transitioned to only one device, tak VGA back */
 592 static unsigned int radeon_vga_set_decode(void *cookie, bool state)
 593 {
 594         struct radeon_device *rdev = cookie;
 595         radeon_vga_set_state(rdev, state);
 596         if (state)
 597                 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
 598                        VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
 599         else
 600                 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
 601 }
 602
 603 void radeon_check_arguments(struct radeon_device *rdev)
 604 {
 605         /* vramlimit must be a power of two */
 606         switch (radeon_vram_limit) {
 607         case 0:
 608         case 4:
 609         case 8:
 610         case 16:
 611         case 32:
 612         case 64:
 613         case 128:
 614         case 256:
 615         case 512:
 616         case 1024:
 617         case 2048:
 618         case 4096:
 619                 break;
 620         default:
 621                 dev_warn(rdev->dev, "vram limit (%d) must be a power of 2\n",
 622                                 radeon_vram_limit);
 623                 radeon_vram_limit = 0;
 624                 break;
 625         }
 626         radeon_vram_limit = radeon_vram_limit << 20;
 627         /* gtt size must be power of two and greater or equal to 32M */
 628         switch (radeon_gart_size) {
 629         case 4:
 630         case 8:
 631         case 16:
 632                 dev_warn(rdev->dev, "gart size (%d) too small forcing to 512M\n",
 633                                 radeon_gart_size);
 634                 radeon_gart_size = 512;
 635                 break;
 636         case 32:
 637         case 64:
 638         case 128:
 639         case 256:
 640         case 512:
 641         case 1024:
 642         case 2048:
 643         case 4096:
 644                 break;
 645         default:
 646                 dev_warn(rdev->dev, "gart size (%d) must be a power of 2\n",
 647                                 radeon_gart_size);
 648                 radeon_gart_size = 512;
 649                 break;
 650         }
 651         rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024;
 652         /* AGP mode can only be -1, 1, 2, 4, 8 */
 653         switch (radeon_agpmode) {
 654         case -1:
 655         case 0:
 656         case 1:
 657         case 2:
 658         case 4:
 659         case 8:
 660                 break;
 661         default:
 662                 dev_warn(rdev->dev, "invalid AGP mode %d (valid mode: "
 663                                 "-1, 0, 1, 2, 4, 8)\n", radeon_agpmode);
 664                 radeon_agpmode = 0;
 665                 break;
 666         }
 667 }
 668
 669 static void radeon_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
 670 {
 671         struct drm_device *dev = pci_get_drvdata(pdev);
 672         pm_message_t pmm = { .event = PM_EVENT_SUSPEND };
 673         if (state == VGA_SWITCHEROO_ON) {
 674                 printk(KERN_INFO "radeon: switched on\n");
 675                 /* don't suspend or resume card normally */
 676                 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
 677                 radeon_resume_kms(dev);
 678                 dev->switch_power_state = DRM_SWITCH_POWER_ON;
 679                 drm_kms_helper_poll_enable(dev);
 680         } else {
 681                 printk(KERN_INFO "radeon: switched off\n");
 682                 drm_kms_helper_poll_disable(dev);
 683                 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
 684                 radeon_suspend_kms(dev, pmm);
 685                 dev->switch_power_state = DRM_SWITCH_POWER_OFF;
 686         }
 687 }
 688
 689 static bool radeon_switcheroo_can_switch(struct pci_dev *pdev)
 690 {
 691         struct drm_device *dev = pci_get_drvdata(pdev);
 692         bool can_switch;
 693
 694         spin_lock(&dev->count_lock);
 695         can_switch = (dev->open_count == 0);
 696         spin_unlock(&dev->count_lock);
 697         return can_switch;
 698 }
 699
 700 static const struct vga_switcheroo_client_ops radeon_switcheroo_ops = {
 701         .set_gpu_state = radeon_switcheroo_set_state,
 702         .reprobe = NULL,
 703         .can_switch = radeon_switcheroo_can_switch,
 704 };
 705
 706 int radeon_device_init(struct radeon_device *rdev,
 707                        struct drm_device *ddev,
 708                        struct pci_dev *pdev,
 709                        uint32_t flags)
 710 {
 711         int r, i;
 712         int dma_bits;
 713
 714         rdev->shutdown = false;
 715         rdev->dev = &pdev->dev;
 716         rdev->ddev = ddev;
 717         rdev->pdev = pdev;
 718         rdev->flags = flags;
 719         rdev->family = flags & RADEON_FAMILY_MASK;
 720         rdev->is_atom_bios = false;
 721         rdev->usec_timeout = RADEON_MAX_USEC_TIMEOUT;
 722         rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024;
 723         rdev->accel_working = false;
 724
 725         DRM_INFO("initializing kernel modesetting (%s 0x%04X:0x%04X 0x%04X:0x%04X).\n",
 726                 radeon_family_name[rdev->family], pdev->vendor, pdev->device,
 727                 pdev->subsystem_vendor, pdev->subsystem_device);
 728
 729         /* mutex initialization are all done here so we
 730          * can recall function without having locking issues */
 731         radeon_mutex_init(&rdev->cs_mutex);
 732         mutex_init(&rdev->ring_lock);
 733         mutex_init(&rdev->dc_hw_i2c_mutex);
 734         if (rdev->family >= CHIP_R600)
 735                 spin_lock_init(&rdev->ih.lock);
 736         mutex_init(&rdev->gem.mutex);
 737         mutex_init(&rdev->pm.mutex);
 738         mutex_init(&rdev->vram_mutex);
 739         INIT_LIST_HEAD(&rdev->gem.objects);
 740         init_waitqueue_head(&rdev->irq.vblank_queue);
 741         init_waitqueue_head(&rdev->irq.idle_queue);
 742         /* initialize vm here */
 743         rdev->vm_manager.use_bitmap = 1;
 744         rdev->vm_manager.max_pfn = 1 << 20;
 745         INIT_LIST_HEAD(&rdev->vm_manager.lru_vm);
 746
 747         /* Set asic functions */
 748         r = radeon_asic_init(rdev);
 749         if (r)
 750                 return r;
 751         radeon_check_arguments(rdev);
 752
 753         /* all of the newer IGP chips have an internal gart
 754          * However some rs4xx report as AGP, so remove that here.
 755          */
 756         if ((rdev->family >= CHIP_RS400) &&
 757             (rdev->flags & RADEON_IS_IGP)) {
 758                 rdev->flags &= ~RADEON_IS_AGP;
 759         }
 760
 761         if (rdev->flags & RADEON_IS_AGP && radeon_agpmode == -1) {
 762                 radeon_agp_disable(rdev);
 763         }
 764
 765         /* set DMA mask + need_dma32 flags.
 766          * PCIE - can handle 40-bits.
 767          * IGP - can handle 40-bits
 768          * AGP - generally dma32 is safest
 769          * PCI - dma32 for legacy pci gart, 40 bits on newer asics
 770          */
 771         rdev->need_dma32 = false;
 772         if (rdev->flags & RADEON_IS_AGP)
 773                 rdev->need_dma32 = true;
 774         if ((rdev->flags & RADEON_IS_PCI) &&
 775             (rdev->family < CHIP_RS400))
 776                 rdev->need_dma32 = true;
 777
 778         dma_bits = rdev->need_dma32 ? 32 : 40;
 779         r = pci_set_dma_mask(rdev->pdev, DMA_BIT_MASK(dma_bits));
 780         if (r) {
 781                 rdev->need_dma32 = true;
 782                 dma_bits = 32;
 783                 printk(KERN_WARNING "radeon: No suitable DMA available.\n");
 784         }
 785         r = pci_set_consistent_dma_mask(rdev->pdev, DMA_BIT_MASK(dma_bits));
 786         if (r) {
 787                 pci_set_consistent_dma_mask(rdev->pdev, DMA_BIT_MASK(32));
 788                 printk(KERN_WARNING "radeon: No coherent DMA available.\n");
 789         }
 790
 791         /* Registers mapping */
 792         /* TODO: block userspace mapping of io register */
 793         rdev->rmmio_base = pci_resource_start(rdev->pdev, 2);
 794         rdev->rmmio_size = pci_resource_len(rdev->pdev, 2);
 795         rdev->rmmio = ioremap(rdev->rmmio_base, rdev->rmmio_size);
 796         if (rdev->rmmio == NULL) {
 797                 return -ENOMEM;
 798         }
 799         DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)rdev->rmmio_base);
 800         DRM_INFO("register mmio size: %u\n", (unsigned)rdev->rmmio_size);
 801
 802         /* io port mapping */
 803         for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
 804                 if (pci_resource_flags(rdev->pdev, i) & IORESOURCE_IO) {
 805                         rdev->rio_mem_size = pci_resource_len(rdev->pdev, i);
 806                         rdev->rio_mem = pci_iomap(rdev->pdev, i, rdev->rio_mem_size);
 807                         break;
 808                 }
 809         }
 810         if (rdev->rio_mem == NULL)
 811                 DRM_ERROR("Unable to find PCI I/O BAR\n");
 812
 813         /* if we have > 1 VGA cards, then disable the radeon VGA resources */
 814         /* this will fail for cards that aren't VGA class devices, just
 815          * ignore it */
 816         vga_client_register(rdev->pdev, rdev, NULL, radeon_vga_set_decode);
 817         vga_switcheroo_register_client(rdev->pdev, &radeon_switcheroo_ops);
 818
 819         r = radeon_init(rdev);
 820         if (r)
 821                 return r;
 822
 823         if (rdev->flags & RADEON_IS_AGP && !rdev->accel_working) {
 824                 /* Acceleration not working on AGP card try again
 825                  * with fallback to PCI or PCIE GART
 826                  */
 827                 radeon_asic_reset(rdev);
 828                 radeon_fini(rdev);
 829                 radeon_agp_disable(rdev);
 830                 r = radeon_init(rdev);
 831                 if (r)
 832                         return r;
 833         }
 834         if ((radeon_testing & 1)) {
 835                 radeon_test_moves(rdev);
 836         }
 837         if ((radeon_testing & 2)) {
 838                 radeon_test_syncing(rdev);
 839         }
 840         if (radeon_benchmarking) {
 841                 radeon_benchmark(rdev, radeon_benchmarking);
 842         }
 843         return 0;
 844 }
 845
 846 static void radeon_debugfs_remove_files(struct radeon_device *rdev);
 847
 848 void radeon_device_fini(struct radeon_device *rdev)
 849 {
 850         DRM_INFO("radeon: finishing device.\n");
 851         rdev->shutdown = true;
 852         /* evict vram memory */
 853         radeon_bo_evict_vram(rdev);
 854         radeon_fini(rdev);
 855         vga_switcheroo_unregister_client(rdev->pdev);
 856         vga_client_register(rdev->pdev, NULL, NULL, NULL);
 857         if (rdev->rio_mem)
 858                 pci_iounmap(rdev->pdev, rdev->rio_mem);
 859         rdev->rio_mem = NULL;
 860         iounmap(rdev->rmmio);
 861         rdev->rmmio = NULL;
 862         radeon_debugfs_remove_files(rdev);
 863 }
 864
 865
 866 /*
 867  * Suspend & resume.
 868  */
 869 int radeon_suspend_kms(struct drm_device *dev, pm_message_t state)
 870 {
 871         struct radeon_device *rdev;
 872         struct drm_crtc *crtc;
 873         struct drm_connector *connector;
 874         int i, r;
 875
 876         if (dev == NULL || dev->dev_private == NULL) {
 877                 return -ENODEV;
 878         }
 879         if (state.event == PM_EVENT_PRETHAW) {
 880                 return 0;
 881         }
 882         rdev = dev->dev_private;
 883
 884         if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
 885                 return 0;
 886
 887         drm_kms_helper_poll_disable(dev);
 888
 889         /* turn off display hw */
 890         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 891                 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
 892         }
 893
 894         /* unpin the front buffers */
 895         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 896                 struct radeon_framebuffer *rfb = to_radeon_framebuffer(crtc->fb);
 897                 struct radeon_bo *robj;
 898
 899                 if (rfb == NULL || rfb->obj == NULL) {
 900                         continue;
 901                 }
 902                 robj = gem_to_radeon_bo(rfb->obj);
 903                 /* don't unpin kernel fb objects */
 904                 if (!radeon_fbdev_robj_is_fb(rdev, robj)) {
 905                         r = radeon_bo_reserve(robj, false);
 906                         if (r == 0) {
 907                                 radeon_bo_unpin(robj);
 908                                 radeon_bo_unreserve(robj);
 909                         }
 910                 }
 911         }
 912         /* evict vram memory */
 913         radeon_bo_evict_vram(rdev);
 914
 915         mutex_lock(&rdev->ring_lock);
 916         /* wait for gpu to finish processing current batch */
 917         for (i = 0; i < RADEON_NUM_RINGS; i++)
 918                 radeon_fence_wait_empty_locked(rdev, i);
 919         mutex_unlock(&rdev->ring_lock);
 920
 921         radeon_save_bios_scratch_regs(rdev);
 922
 923         radeon_pm_suspend(rdev);
 924         radeon_suspend(rdev);
 925         radeon_hpd_fini(rdev);
 926         /* evict remaining vram memory */
 927         radeon_bo_evict_vram(rdev);
 928
 929         radeon_agp_suspend(rdev);
 930
 931         pci_save_state(dev->pdev);
 932         if (state.event == PM_EVENT_SUSPEND) {
 933                 /* Shut down the device */
 934                 pci_disable_device(dev->pdev);
 935                 pci_set_power_state(dev->pdev, PCI_D3hot);
 936         }
 937         console_lock();
 938         radeon_fbdev_set_suspend(rdev, 1);
 939         console_unlock();
 940         return 0;
 941 }
 942
 943 int radeon_resume_kms(struct drm_device *dev)
 944 {
 945         struct drm_connector *connector;
 946         struct radeon_device *rdev = dev->dev_private;
 947
 948         if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
 949                 return 0;
 950
 951         console_lock();
 952         pci_set_power_state(dev->pdev, PCI_D0);
 953         pci_restore_state(dev->pdev);
 954         if (pci_enable_device(dev->pdev)) {
 955                 console_unlock();
 956                 return -1;
 957         }
 958         /* resume AGP if in use */
 959         radeon_agp_resume(rdev);
 960         radeon_resume(rdev);
 961         radeon_pm_resume(rdev);
 962         radeon_restore_bios_scratch_regs(rdev);
 963
 964         radeon_fbdev_set_suspend(rdev, 0);
 965         console_unlock();
 966
 967         /* init dig PHYs, disp eng pll */
 968         if (rdev->is_atom_bios) {
 969                 radeon_atom_encoder_init(rdev);
 970                 radeon_atom_disp_eng_pll_init(rdev);
 971         }
 972         /* reset hpd state */
 973         radeon_hpd_init(rdev);
 974         /* blat the mode back in */
 975         drm_helper_resume_force_mode(dev);
 976         /* turn on display hw */
 977         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 978                 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
 979         }
 980
 981         drm_kms_helper_poll_enable(dev);
 982         return 0;
 983 }
 984
 985 int radeon_gpu_reset(struct radeon_device *rdev)
 986 {
 987         int r;
 988         int resched;
 989
 990         radeon_save_bios_scratch_regs(rdev);
 991         /* block TTM */
 992         resched = ttm_bo_lock_delayed_workqueue(&rdev->mman.bdev);
 993         radeon_suspend(rdev);
 994
 995         r = radeon_asic_reset(rdev);
 996         if (!r) {
 997                 dev_info(rdev->dev, "GPU reset succeed\n");
 998                 radeon_resume(rdev);
 999                 radeon_restore_bios_scratch_regs(rdev);
1000                 drm_helper_resume_force_mode(rdev->ddev);
1001                 ttm_bo_unlock_delayed_workqueue(&rdev->mman.bdev, resched);
1002         }
1003
1004         if (r) {
1005                 /* bad news, how to tell it to userspace ? */
1006                 dev_info(rdev->dev, "GPU reset failed\n");
1007         }
1008
1009         return r;
1010 }
1011
1012
1013 /*
1014  * Debugfs
1015  */
1016 int radeon_debugfs_add_files(struct radeon_device *rdev,
1017                              struct drm_info_list *files,
1018                              unsigned nfiles)
1019 {
1020         unsigned i;
1021
1022         for (i = 0; i < rdev->debugfs_count; i++) {
1023                 if (rdev->debugfs[i].files == files) {
1024                         /* Already registered */
1025                         return 0;
1026                 }
1027         }
1028
1029         i = rdev->debugfs_count + 1;
1030         if (i > RADEON_DEBUGFS_MAX_COMPONENTS) {
1031                 DRM_ERROR("Reached maximum number of debugfs components.\n");
1032                 DRM_ERROR("Report so we increase "
1033                           "RADEON_DEBUGFS_MAX_COMPONENTS.\n");
1034                 return -EINVAL;
1035         }
1036         rdev->debugfs[rdev->debugfs_count].files = files;
1037         rdev->debugfs[rdev->debugfs_count].num_files = nfiles;
1038         rdev->debugfs_count = i;
1039 #if defined(CONFIG_DEBUG_FS)
1040         drm_debugfs_create_files(files, nfiles,
1041                                  rdev->ddev->control->debugfs_root,
1042                                  rdev->ddev->control);
1043         drm_debugfs_create_files(files, nfiles,
1044                                  rdev->ddev->primary->debugfs_root,
1045                                  rdev->ddev->primary);
1046 #endif
1047         return 0;
1048 }
1049
1050 static void radeon_debugfs_remove_files(struct radeon_device *rdev)
1051 {
1052 #if defined(CONFIG_DEBUG_FS)
1053         unsigned i;
1054
1055         for (i = 0; i < rdev->debugfs_count; i++) {
1056                 drm_debugfs_remove_files(rdev->debugfs[i].files,
1057                                          rdev->debugfs[i].num_files,
1058                                          rdev->ddev->control);
1059                 drm_debugfs_remove_files(rdev->debugfs[i].files,
1060                                          rdev->debugfs[i].num_files,
1061                                          rdev->ddev->primary);
1062         }
1063 #endif
1064 }
1065
1066 #if defined(CONFIG_DEBUG_FS)
1067 int radeon_debugfs_init(struct drm_minor *minor)
1068 {
1069         return 0;
1070 }
1071
1072 void radeon_debugfs_cleanup(struct drm_minor *minor)
1073 {
1074 }
1075 #endif