drivers/gpu/drm/amd/amdgpu/amdgpu_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/kthread.h>
  29 #include <linux/console.h>
  30 #include <linux/slab.h>
  31 #include <linux/debugfs.h>
  32 #include <drm/drmP.h>
  33 #include <drm/drm_crtc_helper.h>
  34 #include <drm/amdgpu_drm.h>
  35 #include <linux/vgaarb.h>
  36 #include <linux/vga_switcheroo.h>
  37 #include <linux/efi.h>
  38 #include "amdgpu.h"
  39 #include "amdgpu_trace.h"
  40 #include "amdgpu_i2c.h"
  41 #include "atom.h"
  42 #include "amdgpu_atombios.h"
  43 #include "amd_pcie.h"
  44 #ifdef CONFIG_DRM_AMDGPU_CIK
  45 #include "cik.h"
  46 #endif
  47 #include "vi.h"
  48 #include "bif/bif_4_1_d.h"
  49
  50 static int amdgpu_debugfs_regs_init(struct amdgpu_device *adev);
  51 static void amdgpu_debugfs_regs_cleanup(struct amdgpu_device *adev);
  52
  53 static const char *amdgpu_asic_name[] = {
  54         "BONAIRE",
  55         "KAVERI",
  56         "KABINI",
  57         "HAWAII",
  58         "MULLINS",
  59         "TOPAZ",
  60         "TONGA",
  61         "FIJI",
  62         "CARRIZO",
  63         "STONEY",
  64         "POLARIS10",
  65         "POLARIS11",
  66         "LAST",
  67 };
  68
  69 bool amdgpu_device_is_px(struct drm_device *dev)
  70 {
  71         struct amdgpu_device *adev = dev->dev_private;
  72
  73         if (adev->flags & AMD_IS_PX)
  74                 return true;
  75         return false;
  76 }
  77
  78 /*
  79  * MMIO register access helper functions.
  80  */
  81 uint32_t amdgpu_mm_rreg(struct amdgpu_device *adev, uint32_t reg,
  82                         bool always_indirect)
  83 {
  84         uint32_t ret;
  85
  86         if ((reg * 4) < adev->rmmio_size && !always_indirect)
  87                 ret = readl(((void __iomem *)adev->rmmio) + (reg * 4));
  88         else {
  89                 unsigned long flags;
  90
  91                 spin_lock_irqsave(&adev->mmio_idx_lock, flags);
  92                 writel((reg * 4), ((void __iomem *)adev->rmmio) + (mmMM_INDEX * 4));
  93                 ret = readl(((void __iomem *)adev->rmmio) + (mmMM_DATA * 4));
  94                 spin_unlock_irqrestore(&adev->mmio_idx_lock, flags);
  95         }
  96         trace_amdgpu_mm_rreg(adev->pdev->device, reg, ret);
  97         return ret;
  98 }
  99
 100 void amdgpu_mm_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v,
 101                     bool always_indirect)
 102 {
 103         trace_amdgpu_mm_wreg(adev->pdev->device, reg, v);
 104
 105         if ((reg * 4) < adev->rmmio_size && !always_indirect)
 106                 writel(v, ((void __iomem *)adev->rmmio) + (reg * 4));
 107         else {
 108                 unsigned long flags;
 109
 110                 spin_lock_irqsave(&adev->mmio_idx_lock, flags);
 111                 writel((reg * 4), ((void __iomem *)adev->rmmio) + (mmMM_INDEX * 4));
 112                 writel(v, ((void __iomem *)adev->rmmio) + (mmMM_DATA * 4));
 113                 spin_unlock_irqrestore(&adev->mmio_idx_lock, flags);
 114         }
 115 }
 116
 117 u32 amdgpu_io_rreg(struct amdgpu_device *adev, u32 reg)
 118 {
 119         if ((reg * 4) < adev->rio_mem_size)
 120                 return ioread32(adev->rio_mem + (reg * 4));
 121         else {
 122                 iowrite32((reg * 4), adev->rio_mem + (mmMM_INDEX * 4));
 123                 return ioread32(adev->rio_mem + (mmMM_DATA * 4));
 124         }
 125 }
 126
 127 void amdgpu_io_wreg(struct amdgpu_device *adev, u32 reg, u32 v)
 128 {
 129
 130         if ((reg * 4) < adev->rio_mem_size)
 131                 iowrite32(v, adev->rio_mem + (reg * 4));
 132         else {
 133                 iowrite32((reg * 4), adev->rio_mem + (mmMM_INDEX * 4));
 134                 iowrite32(v, adev->rio_mem + (mmMM_DATA * 4));
 135         }
 136 }
 137
 138 /**
 139  * amdgpu_mm_rdoorbell - read a doorbell dword
 140  *
 141  * @adev: amdgpu_device pointer
 142  * @index: doorbell index
 143  *
 144  * Returns the value in the doorbell aperture at the
 145  * requested doorbell index (CIK).
 146  */
 147 u32 amdgpu_mm_rdoorbell(struct amdgpu_device *adev, u32 index)
 148 {
 149         if (index < adev->doorbell.num_doorbells) {
 150                 return readl(adev->doorbell.ptr + index);
 151         } else {
 152                 DRM_ERROR("reading beyond doorbell aperture: 0x%08x!\n", index);
 153                 return 0;
 154         }
 155 }
 156
 157 /**
 158  * amdgpu_mm_wdoorbell - write a doorbell dword
 159  *
 160  * @adev: amdgpu_device pointer
 161  * @index: doorbell index
 162  * @v: value to write
 163  *
 164  * Writes @v to the doorbell aperture at the
 165  * requested doorbell index (CIK).
 166  */
 167 void amdgpu_mm_wdoorbell(struct amdgpu_device *adev, u32 index, u32 v)
 168 {
 169         if (index < adev->doorbell.num_doorbells) {
 170                 writel(v, adev->doorbell.ptr + index);
 171         } else {
 172                 DRM_ERROR("writing beyond doorbell aperture: 0x%08x!\n", index);
 173         }
 174 }
 175
 176 /**
 177  * amdgpu_invalid_rreg - dummy reg read function
 178  *
 179  * @adev: amdgpu device pointer
 180  * @reg: offset of register
 181  *
 182  * Dummy register read function.  Used for register blocks
 183  * that certain asics don't have (all asics).
 184  * Returns the value in the register.
 185  */
 186 static uint32_t amdgpu_invalid_rreg(struct amdgpu_device *adev, uint32_t reg)
 187 {
 188         DRM_ERROR("Invalid callback to read register 0x%04X\n", reg);
 189         BUG();
 190         return 0;
 191 }
 192
 193 /**
 194  * amdgpu_invalid_wreg - dummy reg write function
 195  *
 196  * @adev: amdgpu device pointer
 197  * @reg: offset of register
 198  * @v: value to write to the register
 199  *
 200  * Dummy register read function.  Used for register blocks
 201  * that certain asics don't have (all asics).
 202  */
 203 static void amdgpu_invalid_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v)
 204 {
 205         DRM_ERROR("Invalid callback to write register 0x%04X with 0x%08X\n",
 206                   reg, v);
 207         BUG();
 208 }
 209
 210 /**
 211  * amdgpu_block_invalid_rreg - dummy reg read function
 212  *
 213  * @adev: amdgpu device pointer
 214  * @block: offset of instance
 215  * @reg: offset of register
 216  *
 217  * Dummy register read function.  Used for register blocks
 218  * that certain asics don't have (all asics).
 219  * Returns the value in the register.
 220  */
 221 static uint32_t amdgpu_block_invalid_rreg(struct amdgpu_device *adev,
 222                                           uint32_t block, uint32_t reg)
 223 {
 224         DRM_ERROR("Invalid callback to read register 0x%04X in block 0x%04X\n",
 225                   reg, block);
 226         BUG();
 227         return 0;
 228 }
 229
 230 /**
 231  * amdgpu_block_invalid_wreg - dummy reg write function
 232  *
 233  * @adev: amdgpu device pointer
 234  * @block: offset of instance
 235  * @reg: offset of register
 236  * @v: value to write to the register
 237  *
 238  * Dummy register read function.  Used for register blocks
 239  * that certain asics don't have (all asics).
 240  */
 241 static void amdgpu_block_invalid_wreg(struct amdgpu_device *adev,
 242                                       uint32_t block,
 243                                       uint32_t reg, uint32_t v)
 244 {
 245         DRM_ERROR("Invalid block callback to write register 0x%04X in block 0x%04X with 0x%08X\n",
 246                   reg, block, v);
 247         BUG();
 248 }
 249
 250 static int amdgpu_vram_scratch_init(struct amdgpu_device *adev)
 251 {
 252         int r;
 253
 254         if (adev->vram_scratch.robj == NULL) {
 255                 r = amdgpu_bo_create(adev, AMDGPU_GPU_PAGE_SIZE,
 256                                      PAGE_SIZE, true, AMDGPU_GEM_DOMAIN_VRAM,
 257                                      AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED,
 258                                      NULL, NULL, &adev->vram_scratch.robj);
 259                 if (r) {
 260                         return r;
 261                 }
 262         }
 263
 264         r = amdgpu_bo_reserve(adev->vram_scratch.robj, false);
 265         if (unlikely(r != 0))
 266                 return r;
 267         r = amdgpu_bo_pin(adev->vram_scratch.robj,
 268                           AMDGPU_GEM_DOMAIN_VRAM, &adev->vram_scratch.gpu_addr);
 269         if (r) {
 270                 amdgpu_bo_unreserve(adev->vram_scratch.robj);
 271                 return r;
 272         }
 273         r = amdgpu_bo_kmap(adev->vram_scratch.robj,
 274                                 (void **)&adev->vram_scratch.ptr);
 275         if (r)
 276                 amdgpu_bo_unpin(adev->vram_scratch.robj);
 277         amdgpu_bo_unreserve(adev->vram_scratch.robj);
 278
 279         return r;
 280 }
 281
 282 static void amdgpu_vram_scratch_fini(struct amdgpu_device *adev)
 283 {
 284         int r;
 285
 286         if (adev->vram_scratch.robj == NULL) {
 287                 return;
 288         }
 289         r = amdgpu_bo_reserve(adev->vram_scratch.robj, false);
 290         if (likely(r == 0)) {
 291                 amdgpu_bo_kunmap(adev->vram_scratch.robj);
 292                 amdgpu_bo_unpin(adev->vram_scratch.robj);
 293                 amdgpu_bo_unreserve(adev->vram_scratch.robj);
 294         }
 295         amdgpu_bo_unref(&adev->vram_scratch.robj);
 296 }
 297
 298 /**
 299  * amdgpu_program_register_sequence - program an array of registers.
 300  *
 301  * @adev: amdgpu_device pointer
 302  * @registers: pointer to the register array
 303  * @array_size: size of the register array
 304  *
 305  * Programs an array or registers with and and or masks.
 306  * This is a helper for setting golden registers.
 307  */
 308 void amdgpu_program_register_sequence(struct amdgpu_device *adev,
 309                                       const u32 *registers,
 310                                       const u32 array_size)
 311 {
 312         u32 tmp, reg, and_mask, or_mask;
 313         int i;
 314
 315         if (array_size % 3)
 316                 return;
 317
 318         for (i = 0; i < array_size; i +=3) {
 319                 reg = registers[i + 0];
 320                 and_mask = registers[i + 1];
 321                 or_mask = registers[i + 2];
 322
 323                 if (and_mask == 0xffffffff) {
 324                         tmp = or_mask;
 325                 } else {
 326                         tmp = RREG32(reg);
 327                         tmp &= ~and_mask;
 328                         tmp |= or_mask;
 329                 }
 330                 WREG32(reg, tmp);
 331         }
 332 }
 333
 334 void amdgpu_pci_config_reset(struct amdgpu_device *adev)
 335 {
 336         pci_write_config_dword(adev->pdev, 0x7c, AMDGPU_ASIC_RESET_DATA);
 337 }
 338
 339 /*
 340  * GPU doorbell aperture helpers function.
 341  */
 342 /**
 343  * amdgpu_doorbell_init - Init doorbell driver information.
 344  *
 345  * @adev: amdgpu_device pointer
 346  *
 347  * Init doorbell driver information (CIK)
 348  * Returns 0 on success, error on failure.
 349  */
 350 static int amdgpu_doorbell_init(struct amdgpu_device *adev)
 351 {
 352         /* doorbell bar mapping */
 353         adev->doorbell.base = pci_resource_start(adev->pdev, 2);
 354         adev->doorbell.size = pci_resource_len(adev->pdev, 2);
 355
 356         adev->doorbell.num_doorbells = min_t(u32, adev->doorbell.size / sizeof(u32),
 357                                              AMDGPU_DOORBELL_MAX_ASSIGNMENT+1);
 358         if (adev->doorbell.num_doorbells == 0)
 359                 return -EINVAL;
 360
 361         adev->doorbell.ptr = ioremap(adev->doorbell.base, adev->doorbell.num_doorbells * sizeof(u32));
 362         if (adev->doorbell.ptr == NULL) {
 363                 return -ENOMEM;
 364         }
 365         DRM_INFO("doorbell mmio base: 0x%08X\n", (uint32_t)adev->doorbell.base);
 366         DRM_INFO("doorbell mmio size: %u\n", (unsigned)adev->doorbell.size);
 367
 368         return 0;
 369 }
 370
 371 /**
 372  * amdgpu_doorbell_fini - Tear down doorbell driver information.
 373  *
 374  * @adev: amdgpu_device pointer
 375  *
 376  * Tear down doorbell driver information (CIK)
 377  */
 378 static void amdgpu_doorbell_fini(struct amdgpu_device *adev)
 379 {
 380         iounmap(adev->doorbell.ptr);
 381         adev->doorbell.ptr = NULL;
 382 }
 383
 384 /**
 385  * amdgpu_doorbell_get_kfd_info - Report doorbell configuration required to
 386  *                                setup amdkfd
 387  *
 388  * @adev: amdgpu_device pointer
 389  * @aperture_base: output returning doorbell aperture base physical address
 390  * @aperture_size: output returning doorbell aperture size in bytes
 391  * @start_offset: output returning # of doorbell bytes reserved for amdgpu.
 392  *
 393  * amdgpu and amdkfd share the doorbell aperture. amdgpu sets it up,
 394  * takes doorbells required for its own rings and reports the setup to amdkfd.
 395  * amdgpu reserved doorbells are at the start of the doorbell aperture.
 396  */
 397 void amdgpu_doorbell_get_kfd_info(struct amdgpu_device *adev,
 398                                 phys_addr_t *aperture_base,
 399                                 size_t *aperture_size,
 400                                 size_t *start_offset)
 401 {
 402         /*
 403          * The first num_doorbells are used by amdgpu.
 404          * amdkfd takes whatever's left in the aperture.
 405          */
 406         if (adev->doorbell.size > adev->doorbell.num_doorbells * sizeof(u32)) {
 407                 *aperture_base = adev->doorbell.base;
 408                 *aperture_size = adev->doorbell.size;
 409                 *start_offset = adev->doorbell.num_doorbells * sizeof(u32);
 410         } else {
 411                 *aperture_base = 0;
 412                 *aperture_size = 0;
 413                 *start_offset = 0;
 414         }
 415 }
 416
 417 /*
 418  * amdgpu_wb_*()
 419  * Writeback is the the method by which the the GPU updates special pages
 420  * in memory with the status of certain GPU events (fences, ring pointers,
 421  * etc.).
 422  */
 423
 424 /**
 425  * amdgpu_wb_fini - Disable Writeback and free memory
 426  *
 427  * @adev: amdgpu_device pointer
 428  *
 429  * Disables Writeback and frees the Writeback memory (all asics).
 430  * Used at driver shutdown.
 431  */
 432 static void amdgpu_wb_fini(struct amdgpu_device *adev)
 433 {
 434         if (adev->wb.wb_obj) {
 435                 if (!amdgpu_bo_reserve(adev->wb.wb_obj, false)) {
 436                         amdgpu_bo_kunmap(adev->wb.wb_obj);
 437                         amdgpu_bo_unpin(adev->wb.wb_obj);
 438                         amdgpu_bo_unreserve(adev->wb.wb_obj);
 439                 }
 440                 amdgpu_bo_unref(&adev->wb.wb_obj);
 441                 adev->wb.wb = NULL;
 442                 adev->wb.wb_obj = NULL;
 443         }
 444 }
 445
 446 /**
 447  * amdgpu_wb_init- Init Writeback driver info and allocate memory
 448  *
 449  * @adev: amdgpu_device pointer
 450  *
 451  * Disables Writeback and frees the Writeback memory (all asics).
 452  * Used at driver startup.
 453  * Returns 0 on success or an -error on failure.
 454  */
 455 static int amdgpu_wb_init(struct amdgpu_device *adev)
 456 {
 457         int r;
 458
 459         if (adev->wb.wb_obj == NULL) {
 460                 r = amdgpu_bo_create(adev, AMDGPU_MAX_WB * 4, PAGE_SIZE, true,
 461                                      AMDGPU_GEM_DOMAIN_GTT, 0,  NULL, NULL,
 462                                      &adev->wb.wb_obj);
 463                 if (r) {
 464                         dev_warn(adev->dev, "(%d) create WB bo failed\n", r);
 465                         return r;
 466                 }
 467                 r = amdgpu_bo_reserve(adev->wb.wb_obj, false);
 468                 if (unlikely(r != 0)) {
 469                         amdgpu_wb_fini(adev);
 470                         return r;
 471                 }
 472                 r = amdgpu_bo_pin(adev->wb.wb_obj, AMDGPU_GEM_DOMAIN_GTT,
 473                                 &adev->wb.gpu_addr);
 474                 if (r) {
 475                         amdgpu_bo_unreserve(adev->wb.wb_obj);
 476                         dev_warn(adev->dev, "(%d) pin WB bo failed\n", r);
 477                         amdgpu_wb_fini(adev);
 478                         return r;
 479                 }
 480                 r = amdgpu_bo_kmap(adev->wb.wb_obj, (void **)&adev->wb.wb);
 481                 amdgpu_bo_unreserve(adev->wb.wb_obj);
 482                 if (r) {
 483                         dev_warn(adev->dev, "(%d) map WB bo failed\n", r);
 484                         amdgpu_wb_fini(adev);
 485                         return r;
 486                 }
 487
 488                 adev->wb.num_wb = AMDGPU_MAX_WB;
 489                 memset(&adev->wb.used, 0, sizeof(adev->wb.used));
 490
 491                 /* clear wb memory */
 492                 memset((char *)adev->wb.wb, 0, AMDGPU_GPU_PAGE_SIZE);
 493         }
 494
 495         return 0;
 496 }
 497
 498 /**
 499  * amdgpu_wb_get - Allocate a wb entry
 500  *
 501  * @adev: amdgpu_device pointer
 502  * @wb: wb index
 503  *
 504  * Allocate a wb slot for use by the driver (all asics).
 505  * Returns 0 on success or -EINVAL on failure.
 506  */
 507 int amdgpu_wb_get(struct amdgpu_device *adev, u32 *wb)
 508 {
 509         unsigned long offset = find_first_zero_bit(adev->wb.used, adev->wb.num_wb);
 510         if (offset < adev->wb.num_wb) {
 511                 __set_bit(offset, adev->wb.used);
 512                 *wb = offset;
 513                 return 0;
 514         } else {
 515                 return -EINVAL;
 516         }
 517 }
 518
 519 /**
 520  * amdgpu_wb_free - Free a wb entry
 521  *
 522  * @adev: amdgpu_device pointer
 523  * @wb: wb index
 524  *
 525  * Free a wb slot allocated for use by the driver (all asics)
 526  */
 527 void amdgpu_wb_free(struct amdgpu_device *adev, u32 wb)
 528 {
 529         if (wb < adev->wb.num_wb)
 530                 __clear_bit(wb, adev->wb.used);
 531 }
 532
 533 /**
 534  * amdgpu_vram_location - try to find VRAM location
 535  * @adev: amdgpu device structure holding all necessary informations
 536  * @mc: memory controller structure holding memory informations
 537  * @base: base address at which to put VRAM
 538  *
 539  * Function will place try to place VRAM at base address provided
 540  * as parameter (which is so far either PCI aperture address or
 541  * for IGP TOM base address).
 542  *
 543  * If there is not enough space to fit the unvisible VRAM in the 32bits
 544  * address space then we limit the VRAM size to the aperture.
 545  *
 546  * Note: We don't explicitly enforce VRAM start to be aligned on VRAM size,
 547  * this shouldn't be a problem as we are using the PCI aperture as a reference.
 548  * Otherwise this would be needed for rv280, all r3xx, and all r4xx, but
 549  * not IGP.
 550  *
 551  * Note: we use mc_vram_size as on some board we need to program the mc to
 552  * cover the whole aperture even if VRAM size is inferior to aperture size
 553  * Novell bug 204882 + along with lots of ubuntu ones
 554  *
 555  * Note: when limiting vram it's safe to overwritte real_vram_size because
 556  * we are not in case where real_vram_size is inferior to mc_vram_size (ie
 557  * note afected by bogus hw of Novell bug 204882 + along with lots of ubuntu
 558  * ones)
 559  *
 560  * Note: IGP TOM addr should be the same as the aperture addr, we don't
 561  * explicitly check for that thought.
 562  *
 563  * FIXME: when reducing VRAM size align new size on power of 2.
 564  */
 565 void amdgpu_vram_location(struct amdgpu_device *adev, struct amdgpu_mc *mc, u64 base)
 566 {
 567         uint64_t limit = (uint64_t)amdgpu_vram_limit << 20;
 568
 569         mc->vram_start = base;
 570         if (mc->mc_vram_size > (adev->mc.mc_mask - base + 1)) {
 571                 dev_warn(adev->dev, "limiting VRAM to PCI aperture size\n");
 572                 mc->real_vram_size = mc->aper_size;
 573                 mc->mc_vram_size = mc->aper_size;
 574         }
 575         mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
 576         if (limit && limit < mc->real_vram_size)
 577                 mc->real_vram_size = limit;
 578         dev_info(adev->dev, "VRAM: %lluM 0x%016llX - 0x%016llX (%lluM used)\n",
 579                         mc->mc_vram_size >> 20, mc->vram_start,
 580                         mc->vram_end, mc->real_vram_size >> 20);
 581 }
 582
 583 /**
 584  * amdgpu_gtt_location - try to find GTT location
 585  * @adev: amdgpu device structure holding all necessary informations
 586  * @mc: memory controller structure holding memory informations
 587  *
 588  * Function will place try to place GTT before or after VRAM.
 589  *
 590  * If GTT size is bigger than space left then we ajust GTT size.
 591  * Thus function will never fails.
 592  *
 593  * FIXME: when reducing GTT size align new size on power of 2.
 594  */
 595 void amdgpu_gtt_location(struct amdgpu_device *adev, struct amdgpu_mc *mc)
 596 {
 597         u64 size_af, size_bf;
 598
 599         size_af = ((adev->mc.mc_mask - mc->vram_end) + mc->gtt_base_align) & ~mc->gtt_base_align;
 600         size_bf = mc->vram_start & ~mc->gtt_base_align;
 601         if (size_bf > size_af) {
 602                 if (mc->gtt_size > size_bf) {
 603                         dev_warn(adev->dev, "limiting GTT\n");
 604                         mc->gtt_size = size_bf;
 605                 }
 606                 mc->gtt_start = (mc->vram_start & ~mc->gtt_base_align) - mc->gtt_size;
 607         } else {
 608                 if (mc->gtt_size > size_af) {
 609                         dev_warn(adev->dev, "limiting GTT\n");
 610                         mc->gtt_size = size_af;
 611                 }
 612                 mc->gtt_start = (mc->vram_end + 1 + mc->gtt_base_align) & ~mc->gtt_base_align;
 613         }
 614         mc->gtt_end = mc->gtt_start + mc->gtt_size - 1;
 615         dev_info(adev->dev, "GTT: %lluM 0x%016llX - 0x%016llX\n",
 616                         mc->gtt_size >> 20, mc->gtt_start, mc->gtt_end);
 617 }
 618
 619 /*
 620  * GPU helpers function.
 621  */
 622 /**
 623  * amdgpu_card_posted - check if the hw has already been initialized
 624  *
 625  * @adev: amdgpu_device pointer
 626  *
 627  * Check if the asic has been initialized (all asics).
 628  * Used at driver startup.
 629  * Returns true if initialized or false if not.
 630  */
 631 bool amdgpu_card_posted(struct amdgpu_device *adev)
 632 {
 633         uint32_t reg;
 634
 635         /* then check MEM_SIZE, in case the crtcs are off */
 636         reg = RREG32(mmCONFIG_MEMSIZE);
 637
 638         if (reg)
 639                 return true;
 640
 641         return false;
 642
 643 }
 644
 645 /**
 646  * amdgpu_dummy_page_init - init dummy page used by the driver
 647  *
 648  * @adev: amdgpu_device pointer
 649  *
 650  * Allocate the dummy page used by the driver (all asics).
 651  * This dummy page is used by the driver as a filler for gart entries
 652  * when pages are taken out of the GART
 653  * Returns 0 on sucess, -ENOMEM on failure.
 654  */
 655 int amdgpu_dummy_page_init(struct amdgpu_device *adev)
 656 {
 657         if (adev->dummy_page.page)
 658                 return 0;
 659         adev->dummy_page.page = alloc_page(GFP_DMA32 | GFP_KERNEL | __GFP_ZERO);
 660         if (adev->dummy_page.page == NULL)
 661                 return -ENOMEM;
 662         adev->dummy_page.addr = pci_map_page(adev->pdev, adev->dummy_page.page,
 663                                         0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
 664         if (pci_dma_mapping_error(adev->pdev, adev->dummy_page.addr)) {
 665                 dev_err(&adev->pdev->dev, "Failed to DMA MAP the dummy page\n");
 666                 __free_page(adev->dummy_page.page);
 667                 adev->dummy_page.page = NULL;
 668                 return -ENOMEM;
 669         }
 670         return 0;
 671 }
 672
 673 /**
 674  * amdgpu_dummy_page_fini - free dummy page used by the driver
 675  *
 676  * @adev: amdgpu_device pointer
 677  *
 678  * Frees the dummy page used by the driver (all asics).
 679  */
 680 void amdgpu_dummy_page_fini(struct amdgpu_device *adev)
 681 {
 682         if (adev->dummy_page.page == NULL)
 683                 return;
 684         pci_unmap_page(adev->pdev, adev->dummy_page.addr,
 685                         PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
 686         __free_page(adev->dummy_page.page);
 687         adev->dummy_page.page = NULL;
 688 }
 689
 690
 691 /* ATOM accessor methods */
 692 /*
 693  * ATOM is an interpreted byte code stored in tables in the vbios.  The
 694  * driver registers callbacks to access registers and the interpreter
 695  * in the driver parses the tables and executes then to program specific
 696  * actions (set display modes, asic init, etc.).  See amdgpu_atombios.c,
 697  * atombios.h, and atom.c
 698  */
 699
 700 /**
 701  * cail_pll_read - read PLL register
 702  *
 703  * @info: atom card_info pointer
 704  * @reg: PLL register offset
 705  *
 706  * Provides a PLL register accessor for the atom interpreter (r4xx+).
 707  * Returns the value of the PLL register.
 708  */
 709 static uint32_t cail_pll_read(struct card_info *info, uint32_t reg)
 710 {
 711         return 0;
 712 }
 713
 714 /**
 715  * cail_pll_write - write PLL register
 716  *
 717  * @info: atom card_info pointer
 718  * @reg: PLL register offset
 719  * @val: value to write to the pll register
 720  *
 721  * Provides a PLL register accessor for the atom interpreter (r4xx+).
 722  */
 723 static void cail_pll_write(struct card_info *info, uint32_t reg, uint32_t val)
 724 {
 725
 726 }
 727
 728 /**
 729  * cail_mc_read - read MC (Memory Controller) register
 730  *
 731  * @info: atom card_info pointer
 732  * @reg: MC register offset
 733  *
 734  * Provides an MC register accessor for the atom interpreter (r4xx+).
 735  * Returns the value of the MC register.
 736  */
 737 static uint32_t cail_mc_read(struct card_info *info, uint32_t reg)
 738 {
 739         return 0;
 740 }
 741
 742 /**
 743  * cail_mc_write - write MC (Memory Controller) register
 744  *
 745  * @info: atom card_info pointer
 746  * @reg: MC register offset
 747  * @val: value to write to the pll register
 748  *
 749  * Provides a MC register accessor for the atom interpreter (r4xx+).
 750  */
 751 static void cail_mc_write(struct card_info *info, uint32_t reg, uint32_t val)
 752 {
 753
 754 }
 755
 756 /**
 757  * cail_reg_write - write MMIO register
 758  *
 759  * @info: atom card_info pointer
 760  * @reg: MMIO register offset
 761  * @val: value to write to the pll register
 762  *
 763  * Provides a MMIO register accessor for the atom interpreter (r4xx+).
 764  */
 765 static void cail_reg_write(struct card_info *info, uint32_t reg, uint32_t val)
 766 {
 767         struct amdgpu_device *adev = info->dev->dev_private;
 768
 769         WREG32(reg, val);
 770 }
 771
 772 /**
 773  * cail_reg_read - read MMIO register
 774  *
 775  * @info: atom card_info pointer
 776  * @reg: MMIO register offset
 777  *
 778  * Provides an MMIO register accessor for the atom interpreter (r4xx+).
 779  * Returns the value of the MMIO register.
 780  */
 781 static uint32_t cail_reg_read(struct card_info *info, uint32_t reg)
 782 {
 783         struct amdgpu_device *adev = info->dev->dev_private;
 784         uint32_t r;
 785
 786         r = RREG32(reg);
 787         return r;
 788 }
 789
 790 /**
 791  * cail_ioreg_write - write IO register
 792  *
 793  * @info: atom card_info pointer
 794  * @reg: IO register offset
 795  * @val: value to write to the pll register
 796  *
 797  * Provides a IO register accessor for the atom interpreter (r4xx+).
 798  */
 799 static void cail_ioreg_write(struct card_info *info, uint32_t reg, uint32_t val)
 800 {
 801         struct amdgpu_device *adev = info->dev->dev_private;
 802
 803         WREG32_IO(reg, val);
 804 }
 805
 806 /**
 807  * cail_ioreg_read - read IO register
 808  *
 809  * @info: atom card_info pointer
 810  * @reg: IO register offset
 811  *
 812  * Provides an IO register accessor for the atom interpreter (r4xx+).
 813  * Returns the value of the IO register.
 814  */
 815 static uint32_t cail_ioreg_read(struct card_info *info, uint32_t reg)
 816 {
 817         struct amdgpu_device *adev = info->dev->dev_private;
 818         uint32_t r;
 819
 820         r = RREG32_IO(reg);
 821         return r;
 822 }
 823
 824 /**
 825  * amdgpu_atombios_fini - free the driver info and callbacks for atombios
 826  *
 827  * @adev: amdgpu_device pointer
 828  *
 829  * Frees the driver info and register access callbacks for the ATOM
 830  * interpreter (r4xx+).
 831  * Called at driver shutdown.
 832  */
 833 static void amdgpu_atombios_fini(struct amdgpu_device *adev)
 834 {
 835         if (adev->mode_info.atom_context) {
 836                 kfree(adev->mode_info.atom_context->scratch);
 837                 kfree(adev->mode_info.atom_context->iio);
 838         }
 839         kfree(adev->mode_info.atom_context);
 840         adev->mode_info.atom_context = NULL;
 841         kfree(adev->mode_info.atom_card_info);
 842         adev->mode_info.atom_card_info = NULL;
 843 }
 844
 845 /**
 846  * amdgpu_atombios_init - init the driver info and callbacks for atombios
 847  *
 848  * @adev: amdgpu_device pointer
 849  *
 850  * Initializes the driver info and register access callbacks for the
 851  * ATOM interpreter (r4xx+).
 852  * Returns 0 on sucess, -ENOMEM on failure.
 853  * Called at driver startup.
 854  */
 855 static int amdgpu_atombios_init(struct amdgpu_device *adev)
 856 {
 857         struct card_info *atom_card_info =
 858             kzalloc(sizeof(struct card_info), GFP_KERNEL);
 859
 860         if (!atom_card_info)
 861                 return -ENOMEM;
 862
 863         adev->mode_info.atom_card_info = atom_card_info;
 864         atom_card_info->dev = adev->ddev;
 865         atom_card_info->reg_read = cail_reg_read;
 866         atom_card_info->reg_write = cail_reg_write;
 867         /* needed for iio ops */
 868         if (adev->rio_mem) {
 869                 atom_card_info->ioreg_read = cail_ioreg_read;
 870                 atom_card_info->ioreg_write = cail_ioreg_write;
 871         } else {
 872                 DRM_ERROR("Unable to find PCI I/O BAR; using MMIO for ATOM IIO\n");
 873                 atom_card_info->ioreg_read = cail_reg_read;
 874                 atom_card_info->ioreg_write = cail_reg_write;
 875         }
 876         atom_card_info->mc_read = cail_mc_read;
 877         atom_card_info->mc_write = cail_mc_write;
 878         atom_card_info->pll_read = cail_pll_read;
 879         atom_card_info->pll_write = cail_pll_write;
 880
 881         adev->mode_info.atom_context = amdgpu_atom_parse(atom_card_info, adev->bios);
 882         if (!adev->mode_info.atom_context) {
 883                 amdgpu_atombios_fini(adev);
 884                 return -ENOMEM;
 885         }
 886
 887         mutex_init(&adev->mode_info.atom_context->mutex);
 888         amdgpu_atombios_scratch_regs_init(adev);
 889         amdgpu_atom_allocate_fb_scratch(adev->mode_info.atom_context);
 890         return 0;
 891 }
 892
 893 /* if we get transitioned to only one device, take VGA back */
 894 /**
 895  * amdgpu_vga_set_decode - enable/disable vga decode
 896  *
 897  * @cookie: amdgpu_device pointer
 898  * @state: enable/disable vga decode
 899  *
 900  * Enable/disable vga decode (all asics).
 901  * Returns VGA resource flags.
 902  */
 903 static unsigned int amdgpu_vga_set_decode(void *cookie, bool state)
 904 {
 905         struct amdgpu_device *adev = cookie;
 906         amdgpu_asic_set_vga_state(adev, state);
 907         if (state)
 908                 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
 909                        VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
 910         else
 911                 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
 912 }
 913
 914 /**
 915  * amdgpu_check_pot_argument - check that argument is a power of two
 916  *
 917  * @arg: value to check
 918  *
 919  * Validates that a certain argument is a power of two (all asics).
 920  * Returns true if argument is valid.
 921  */
 922 static bool amdgpu_check_pot_argument(int arg)
 923 {
 924         return (arg & (arg - 1)) == 0;
 925 }
 926
 927 /**
 928  * amdgpu_check_arguments - validate module params
 929  *
 930  * @adev: amdgpu_device pointer
 931  *
 932  * Validates certain module parameters and updates
 933  * the associated values used by the driver (all asics).
 934  */
 935 static void amdgpu_check_arguments(struct amdgpu_device *adev)
 936 {
 937         if (amdgpu_sched_jobs < 4) {
 938                 dev_warn(adev->dev, "sched jobs (%d) must be at least 4\n",
 939                          amdgpu_sched_jobs);
 940                 amdgpu_sched_jobs = 4;
 941         } else if (!amdgpu_check_pot_argument(amdgpu_sched_jobs)){
 942                 dev_warn(adev->dev, "sched jobs (%d) must be a power of 2\n",
 943                          amdgpu_sched_jobs);
 944                 amdgpu_sched_jobs = roundup_pow_of_two(amdgpu_sched_jobs);
 945         }
 946
 947         if (amdgpu_gart_size != -1) {
 948                 /* gtt size must be greater or equal to 32M */
 949                 if (amdgpu_gart_size < 32) {
 950                         dev_warn(adev->dev, "gart size (%d) too small\n",
 951                                  amdgpu_gart_size);
 952                         amdgpu_gart_size = -1;
 953                 }
 954         }
 955
 956         if (!amdgpu_check_pot_argument(amdgpu_vm_size)) {
 957                 dev_warn(adev->dev, "VM size (%d) must be a power of 2\n",
 958                          amdgpu_vm_size);
 959                 amdgpu_vm_size = 8;
 960         }
 961
 962         if (amdgpu_vm_size < 1) {
 963                 dev_warn(adev->dev, "VM size (%d) too small, min is 1GB\n",
 964                          amdgpu_vm_size);
 965                 amdgpu_vm_size = 8;
 966         }
 967
 968         /*
 969          * Max GPUVM size for Cayman, SI and CI are 40 bits.
 970          */
 971         if (amdgpu_vm_size > 1024) {
 972                 dev_warn(adev->dev, "VM size (%d) too large, max is 1TB\n",
 973                          amdgpu_vm_size);
 974                 amdgpu_vm_size = 8;
 975         }
 976
 977         /* defines number of bits in page table versus page directory,
 978          * a page is 4KB so we have 12 bits offset, minimum 9 bits in the
 979          * page table and the remaining bits are in the page directory */
 980         if (amdgpu_vm_block_size == -1) {
 981
 982                 /* Total bits covered by PD + PTs */
 983                 unsigned bits = ilog2(amdgpu_vm_size) + 18;
 984
 985                 /* Make sure the PD is 4K in size up to 8GB address space.
 986                    Above that split equal between PD and PTs */
 987                 if (amdgpu_vm_size <= 8)
 988                         amdgpu_vm_block_size = bits - 9;
 989                 else
 990                         amdgpu_vm_block_size = (bits + 3) / 2;
 991
 992         } else if (amdgpu_vm_block_size < 9) {
 993                 dev_warn(adev->dev, "VM page table size (%d) too small\n",
 994                          amdgpu_vm_block_size);
 995                 amdgpu_vm_block_size = 9;
 996         }
 997
 998         if (amdgpu_vm_block_size > 24 ||
 999             (amdgpu_vm_size * 1024) < (1ull << amdgpu_vm_block_size)) {
1000                 dev_warn(adev->dev, "VM page table size (%d) too large\n",
1001                          amdgpu_vm_block_size);
1002                 amdgpu_vm_block_size = 9;
1003         }
1004 }
1005
1006 /**
1007  * amdgpu_switcheroo_set_state - set switcheroo state
1008  *
1009  * @pdev: pci dev pointer
1010  * @state: vga_switcheroo state
1011  *
1012  * Callback for the switcheroo driver.  Suspends or resumes the
1013  * the asics before or after it is powered up using ACPI methods.
1014  */
1015 static void amdgpu_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
1016 {
1017         struct drm_device *dev = pci_get_drvdata(pdev);
1018
1019         if (amdgpu_device_is_px(dev) && state == VGA_SWITCHEROO_OFF)
1020                 return;
1021
1022         if (state == VGA_SWITCHEROO_ON) {
1023                 unsigned d3_delay = dev->pdev->d3_delay;
1024
1025                 printk(KERN_INFO "amdgpu: switched on\n");
1026                 /* don't suspend or resume card normally */
1027                 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
1028
1029                 amdgpu_resume_kms(dev, true, true);
1030
1031                 dev->pdev->d3_delay = d3_delay;
1032
1033                 dev->switch_power_state = DRM_SWITCH_POWER_ON;
1034                 drm_kms_helper_poll_enable(dev);
1035         } else {
1036                 printk(KERN_INFO "amdgpu: switched off\n");
1037                 drm_kms_helper_poll_disable(dev);
1038                 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
1039                 amdgpu_suspend_kms(dev, true, true);
1040                 dev->switch_power_state = DRM_SWITCH_POWER_OFF;
1041         }
1042 }
1043
1044 /**
1045  * amdgpu_switcheroo_can_switch - see if switcheroo state can change
1046  *
1047  * @pdev: pci dev pointer
1048  *
1049  * Callback for the switcheroo driver.  Check of the switcheroo
1050  * state can be changed.
1051  * Returns true if the state can be changed, false if not.
1052  */
1053 static bool amdgpu_switcheroo_can_switch(struct pci_dev *pdev)
1054 {
1055         struct drm_device *dev = pci_get_drvdata(pdev);
1056
1057         /*
1058         * FIXME: open_count is protected by drm_global_mutex but that would lead to
1059         * locking inversion with the driver load path. And the access here is
1060         * completely racy anyway. So don't bother with locking for now.
1061         */
1062         return dev->open_count == 0;
1063 }
1064
1065 static const struct vga_switcheroo_client_ops amdgpu_switcheroo_ops = {
1066         .set_gpu_state = amdgpu_switcheroo_set_state,
1067         .reprobe = NULL,
1068         .can_switch = amdgpu_switcheroo_can_switch,
1069 };
1070
1071 int amdgpu_set_clockgating_state(struct amdgpu_device *adev,
1072                                   enum amd_ip_block_type block_type,
1073                                   enum amd_clockgating_state state)
1074 {
1075         int i, r = 0;
1076
1077         for (i = 0; i < adev->num_ip_blocks; i++) {
1078                 if (!adev->ip_block_status[i].valid)
1079                         continue;
1080                 if (adev->ip_blocks[i].type == block_type) {
1081                         r = adev->ip_blocks[i].funcs->set_clockgating_state((void *)adev,
1082                                                                             state);
1083                         if (r)
1084                                 return r;
1085                         break;
1086                 }
1087         }
1088         return r;
1089 }
1090
1091 int amdgpu_set_powergating_state(struct amdgpu_device *adev,
1092                                   enum amd_ip_block_type block_type,
1093                                   enum amd_powergating_state state)
1094 {
1095         int i, r = 0;
1096
1097         for (i = 0; i < adev->num_ip_blocks; i++) {
1098                 if (!adev->ip_block_status[i].valid)
1099                         continue;
1100                 if (adev->ip_blocks[i].type == block_type) {
1101                         r = adev->ip_blocks[i].funcs->set_powergating_state((void *)adev,
1102                                                                             state);
1103                         if (r)
1104                                 return r;
1105                         break;
1106                 }
1107         }
1108         return r;
1109 }
1110
1111 int amdgpu_wait_for_idle(struct amdgpu_device *adev,
1112                          enum amd_ip_block_type block_type)
1113 {
1114         int i, r;
1115
1116         for (i = 0; i < adev->num_ip_blocks; i++) {
1117                 if (!adev->ip_block_status[i].valid)
1118                         continue;
1119                 if (adev->ip_blocks[i].type == block_type) {
1120                         r = adev->ip_blocks[i].funcs->wait_for_idle((void *)adev);
1121                         if (r)
1122                                 return r;
1123                         break;
1124                 }
1125         }
1126         return 0;
1127
1128 }
1129
1130 bool amdgpu_is_idle(struct amdgpu_device *adev,
1131                     enum amd_ip_block_type block_type)
1132 {
1133         int i;
1134
1135         for (i = 0; i < adev->num_ip_blocks; i++) {
1136                 if (!adev->ip_block_status[i].valid)
1137                         continue;
1138                 if (adev->ip_blocks[i].type == block_type)
1139                         return adev->ip_blocks[i].funcs->is_idle((void *)adev);
1140         }
1141         return true;
1142
1143 }
1144
1145 const struct amdgpu_ip_block_version * amdgpu_get_ip_block(
1146                                         struct amdgpu_device *adev,
1147                                         enum amd_ip_block_type type)
1148 {
1149         int i;
1150
1151         for (i = 0; i < adev->num_ip_blocks; i++)
1152                 if (adev->ip_blocks[i].type == type)
1153                         return &adev->ip_blocks[i];
1154
1155         return NULL;
1156 }
1157
1158 /**
1159  * amdgpu_ip_block_version_cmp
1160  *
1161  * @adev: amdgpu_device pointer
1162  * @type: enum amd_ip_block_type
1163  * @major: major version
1164  * @minor: minor version
1165  *
1166  * return 0 if equal or greater
1167  * return 1 if smaller or the ip_block doesn't exist
1168  */
1169 int amdgpu_ip_block_version_cmp(struct amdgpu_device *adev,
1170                                 enum amd_ip_block_type type,
1171                                 u32 major, u32 minor)
1172 {
1173         const struct amdgpu_ip_block_version *ip_block;
1174         ip_block = amdgpu_get_ip_block(adev, type);
1175
1176         if (ip_block && ((ip_block->major > major) ||
1177                         ((ip_block->major == major) &&
1178                         (ip_block->minor >= minor))))
1179                 return 0;
1180
1181         return 1;
1182 }
1183
1184 static int amdgpu_early_init(struct amdgpu_device *adev)
1185 {
1186         int i, r;
1187
1188         switch (adev->asic_type) {
1189         case CHIP_TOPAZ:
1190         case CHIP_TONGA:
1191         case CHIP_FIJI:
1192         case CHIP_POLARIS11:
1193         case CHIP_POLARIS10:
1194         case CHIP_CARRIZO:
1195         case CHIP_STONEY:
1196                 if (adev->asic_type == CHIP_CARRIZO || adev->asic_type == CHIP_STONEY)
1197                         adev->family = AMDGPU_FAMILY_CZ;
1198                 else
1199                         adev->family = AMDGPU_FAMILY_VI;
1200
1201                 r = vi_set_ip_blocks(adev);
1202                 if (r)
1203                         return r;
1204                 break;
1205 #ifdef CONFIG_DRM_AMDGPU_CIK
1206         case CHIP_BONAIRE:
1207         case CHIP_HAWAII:
1208         case CHIP_KAVERI:
1209         case CHIP_KABINI:
1210         case CHIP_MULLINS:
1211                 if ((adev->asic_type == CHIP_BONAIRE) || (adev->asic_type == CHIP_HAWAII))
1212                         adev->family = AMDGPU_FAMILY_CI;
1213                 else
1214                         adev->family = AMDGPU_FAMILY_KV;
1215
1216                 r = cik_set_ip_blocks(adev);
1217                 if (r)
1218                         return r;
1219                 break;
1220 #endif
1221         default:
1222                 /* FIXME: not supported yet */
1223                 return -EINVAL;
1224         }
1225
1226         adev->ip_block_status = kcalloc(adev->num_ip_blocks,
1227                                         sizeof(struct amdgpu_ip_block_status), GFP_KERNEL);
1228         if (adev->ip_block_status == NULL)
1229                 return -ENOMEM;
1230
1231         if (adev->ip_blocks == NULL) {
1232                 DRM_ERROR("No IP blocks found!\n");
1233                 return r;
1234         }
1235
1236         for (i = 0; i < adev->num_ip_blocks; i++) {
1237                 if ((amdgpu_ip_block_mask & (1 << i)) == 0) {
1238                         DRM_ERROR("disabled ip block: %d\n", i);
1239                         adev->ip_block_status[i].valid = false;
1240                 } else {
1241                         if (adev->ip_blocks[i].funcs->early_init) {
1242                                 r = adev->ip_blocks[i].funcs->early_init((void *)adev);
1243                                 if (r == -ENOENT) {
1244                                         adev->ip_block_status[i].valid = false;
1245                                 } else if (r) {
1246                                         DRM_ERROR("early_init of IP block <%s> failed %d\n", adev->ip_blocks[i].funcs->name, r);
1247                                         return r;
1248                                 } else {
1249                                         adev->ip_block_status[i].valid = true;
1250                                 }
1251                         } else {
1252                                 adev->ip_block_status[i].valid = true;
1253                         }
1254                 }
1255         }
1256
1257         adev->cg_flags &= amdgpu_cg_mask;
1258         adev->pg_flags &= amdgpu_pg_mask;
1259
1260         return 0;
1261 }
1262
1263 static int amdgpu_init(struct amdgpu_device *adev)
1264 {
1265         int i, r;
1266
1267         for (i = 0; i < adev->num_ip_blocks; i++) {
1268                 if (!adev->ip_block_status[i].valid)
1269                         continue;
1270                 r = adev->ip_blocks[i].funcs->sw_init((void *)adev);
1271                 if (r) {
1272                         DRM_ERROR("sw_init of IP block <%s> failed %d\n", adev->ip_blocks[i].funcs->name, r);
1273                         return r;
1274                 }
1275                 adev->ip_block_status[i].sw = true;
1276                 /* need to do gmc hw init early so we can allocate gpu mem */
1277                 if (adev->ip_blocks[i].type == AMD_IP_BLOCK_TYPE_GMC) {
1278                         r = amdgpu_vram_scratch_init(adev);
1279                         if (r) {
1280                                 DRM_ERROR("amdgpu_vram_scratch_init failed %d\n", r);
1281                                 return r;
1282                         }
1283                         r = adev->ip_blocks[i].funcs->hw_init((void *)adev);
1284                         if (r) {
1285                                 DRM_ERROR("hw_init %d failed %d\n", i, r);
1286                                 return r;
1287                         }
1288                         r = amdgpu_wb_init(adev);
1289                         if (r) {
1290                                 DRM_ERROR("amdgpu_wb_init failed %d\n", r);
1291                                 return r;
1292                         }
1293                         adev->ip_block_status[i].hw = true;
1294                 }
1295         }
1296
1297         for (i = 0; i < adev->num_ip_blocks; i++) {
1298                 if (!adev->ip_block_status[i].sw)
1299                         continue;
1300                 /* gmc hw init is done early */
1301                 if (adev->ip_blocks[i].type == AMD_IP_BLOCK_TYPE_GMC)
1302                         continue;
1303                 r = adev->ip_blocks[i].funcs->hw_init((void *)adev);
1304                 if (r) {
1305                         DRM_ERROR("hw_init of IP block <%s> failed %d\n", adev->ip_blocks[i].funcs->name, r);
1306                         return r;
1307                 }
1308                 adev->ip_block_status[i].hw = true;
1309         }
1310
1311         return 0;
1312 }
1313
1314 static int amdgpu_late_init(struct amdgpu_device *adev)
1315 {
1316         int i = 0, r;
1317
1318         for (i = 0; i < adev->num_ip_blocks; i++) {
1319                 if (!adev->ip_block_status[i].valid)
1320                         continue;
1321                 /* enable clockgating to save power */
1322                 r = adev->ip_blocks[i].funcs->set_clockgating_state((void *)adev,
1323                                                                     AMD_CG_STATE_GATE);
1324                 if (r) {
1325                         DRM_ERROR("set_clockgating_state(gate) of IP block <%s> failed %d\n", adev->ip_blocks[i].funcs->name, r);
1326                         return r;
1327                 }
1328                 if (adev->ip_blocks[i].funcs->late_init) {
1329                         r = adev->ip_blocks[i].funcs->late_init((void *)adev);
1330                         if (r) {
1331                                 DRM_ERROR("late_init of IP block <%s> failed %d\n", adev->ip_blocks[i].funcs->name, r);
1332                                 return r;
1333                         }
1334                 }
1335         }
1336
1337         return 0;
1338 }
1339
1340 static int amdgpu_fini(struct amdgpu_device *adev)
1341 {
1342         int i, r;
1343
1344         for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
1345                 if (!adev->ip_block_status[i].hw)
1346                         continue;
1347                 if (adev->ip_blocks[i].type == AMD_IP_BLOCK_TYPE_GMC) {
1348                         amdgpu_wb_fini(adev);
1349                         amdgpu_vram_scratch_fini(adev);
1350                 }
1351                 /* ungate blocks before hw fini so that we can shutdown the blocks safely */
1352                 r = adev->ip_blocks[i].funcs->set_clockgating_state((void *)adev,
1353                                                                     AMD_CG_STATE_UNGATE);
1354                 if (r) {
1355                         DRM_ERROR("set_clockgating_state(ungate) of IP block <%s> failed %d\n", adev->ip_blocks[i].funcs->name, r);
1356                         return r;
1357                 }
1358                 r = adev->ip_blocks[i].funcs->hw_fini((void *)adev);
1359                 /* XXX handle errors */
1360                 if (r) {
1361                         DRM_DEBUG("hw_fini of IP block <%s> failed %d\n", adev->ip_blocks[i].funcs->name, r);
1362                 }
1363                 adev->ip_block_status[i].hw = false;
1364         }
1365
1366         for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
1367                 if (!adev->ip_block_status[i].sw)
1368                         continue;
1369                 r = adev->ip_blocks[i].funcs->sw_fini((void *)adev);
1370                 /* XXX handle errors */
1371                 if (r) {
1372                         DRM_DEBUG("sw_fini of IP block <%s> failed %d\n", adev->ip_blocks[i].funcs->name, r);
1373                 }
1374                 adev->ip_block_status[i].sw = false;
1375                 adev->ip_block_status[i].valid = false;
1376         }
1377
1378         for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
1379                 if (adev->ip_blocks[i].funcs->late_fini)
1380                         adev->ip_blocks[i].funcs->late_fini((void *)adev);
1381         }
1382
1383         return 0;
1384 }
1385
1386 static int amdgpu_suspend(struct amdgpu_device *adev)
1387 {
1388         int i, r;
1389
1390         /* ungate SMC block first */
1391         r = amdgpu_set_clockgating_state(adev, AMD_IP_BLOCK_TYPE_SMC,
1392                                          AMD_CG_STATE_UNGATE);
1393         if (r) {
1394                 DRM_ERROR("set_clockgating_state(ungate) SMC failed %d\n",r);
1395         }
1396
1397         for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
1398                 if (!adev->ip_block_status[i].valid)
1399                         continue;
1400                 /* ungate blocks so that suspend can properly shut them down */
1401                 if (i != AMD_IP_BLOCK_TYPE_SMC) {
1402                         r = adev->ip_blocks[i].funcs->set_clockgating_state((void *)adev,
1403                                                                             AMD_CG_STATE_UNGATE);
1404                         if (r) {
1405                                 DRM_ERROR("set_clockgating_state(ungate) of IP block <%s> failed %d\n", adev->ip_blocks[i].funcs->name, r);
1406                         }
1407                 }
1408                 /* XXX handle errors */
1409                 r = adev->ip_blocks[i].funcs->suspend(adev);
1410                 /* XXX handle errors */
1411                 if (r) {
1412                         DRM_ERROR("suspend of IP block <%s> failed %d\n", adev->ip_blocks[i].funcs->name, r);
1413                 }
1414         }
1415
1416         return 0;
1417 }
1418
1419 static int amdgpu_resume(struct amdgpu_device *adev)
1420 {
1421         int i, r;
1422
1423         for (i = 0; i < adev->num_ip_blocks; i++) {
1424                 if (!adev->ip_block_status[i].valid)
1425                         continue;
1426                 r = adev->ip_blocks[i].funcs->resume(adev);
1427                 if (r) {
1428                         DRM_ERROR("resume of IP block <%s> failed %d\n", adev->ip_blocks[i].funcs->name, r);
1429                         return r;
1430                 }
1431         }
1432
1433         return 0;
1434 }
1435
1436 static bool amdgpu_device_is_virtual(void)
1437 {
1438 #ifdef CONFIG_X86
1439         return boot_cpu_has(X86_FEATURE_HYPERVISOR);
1440 #else
1441         return false;
1442 #endif
1443 }
1444
1445 /**
1446  * amdgpu_device_init - initialize the driver
1447  *
1448  * @adev: amdgpu_device pointer
1449  * @pdev: drm dev pointer
1450  * @pdev: pci dev pointer
1451  * @flags: driver flags
1452  *
1453  * Initializes the driver info and hw (all asics).
1454  * Returns 0 for success or an error on failure.
1455  * Called at driver startup.
1456  */
1457 int amdgpu_device_init(struct amdgpu_device *adev,
1458                        struct drm_device *ddev,
1459                        struct pci_dev *pdev,
1460                        uint32_t flags)
1461 {
1462         int r, i;
1463         bool runtime = false;
1464
1465         adev->shutdown = false;
1466         adev->dev = &pdev->dev;
1467         adev->ddev = ddev;
1468         adev->pdev = pdev;
1469         adev->flags = flags;
1470         adev->asic_type = flags & AMD_ASIC_MASK;
1471         adev->is_atom_bios = false;
1472         adev->usec_timeout = AMDGPU_MAX_USEC_TIMEOUT;
1473         adev->mc.gtt_size = 512 * 1024 * 1024;
1474         adev->accel_working = false;
1475         adev->num_rings = 0;
1476         adev->mman.buffer_funcs = NULL;
1477         adev->mman.buffer_funcs_ring = NULL;
1478         adev->vm_manager.vm_pte_funcs = NULL;
1479         adev->vm_manager.vm_pte_num_rings = 0;
1480         adev->gart.gart_funcs = NULL;
1481         adev->fence_context = fence_context_alloc(AMDGPU_MAX_RINGS);
1482
1483         adev->smc_rreg = &amdgpu_invalid_rreg;
1484         adev->smc_wreg = &amdgpu_invalid_wreg;
1485         adev->pcie_rreg = &amdgpu_invalid_rreg;
1486         adev->pcie_wreg = &amdgpu_invalid_wreg;
1487         adev->uvd_ctx_rreg = &amdgpu_invalid_rreg;
1488         adev->uvd_ctx_wreg = &amdgpu_invalid_wreg;
1489         adev->didt_rreg = &amdgpu_invalid_rreg;
1490         adev->didt_wreg = &amdgpu_invalid_wreg;
1491         adev->audio_endpt_rreg = &amdgpu_block_invalid_rreg;
1492         adev->audio_endpt_wreg = &amdgpu_block_invalid_wreg;
1493
1494         DRM_INFO("initializing kernel modesetting (%s 0x%04X:0x%04X 0x%04X:0x%04X 0x%02X).\n",
1495                  amdgpu_asic_name[adev->asic_type], pdev->vendor, pdev->device,
1496                  pdev->subsystem_vendor, pdev->subsystem_device, pdev->revision);
1497
1498         /* mutex initialization are all done here so we
1499          * can recall function without having locking issues */
1500         mutex_init(&adev->vm_manager.lock);
1501         atomic_set(&adev->irq.ih.lock, 0);
1502         mutex_init(&adev->pm.mutex);
1503         mutex_init(&adev->gfx.gpu_clock_mutex);
1504         mutex_init(&adev->srbm_mutex);
1505         mutex_init(&adev->grbm_idx_mutex);
1506         mutex_init(&adev->mn_lock);
1507         hash_init(adev->mn_hash);
1508
1509         amdgpu_check_arguments(adev);
1510
1511         /* Registers mapping */
1512         /* TODO: block userspace mapping of io register */
1513         spin_lock_init(&adev->mmio_idx_lock);
1514         spin_lock_init(&adev->smc_idx_lock);
1515         spin_lock_init(&adev->pcie_idx_lock);
1516         spin_lock_init(&adev->uvd_ctx_idx_lock);
1517         spin_lock_init(&adev->didt_idx_lock);
1518         spin_lock_init(&adev->audio_endpt_idx_lock);
1519
1520         adev->rmmio_base = pci_resource_start(adev->pdev, 5);
1521         adev->rmmio_size = pci_resource_len(adev->pdev, 5);
1522         adev->rmmio = ioremap(adev->rmmio_base, adev->rmmio_size);
1523         if (adev->rmmio == NULL) {
1524                 return -ENOMEM;
1525         }
1526         DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)adev->rmmio_base);
1527         DRM_INFO("register mmio size: %u\n", (unsigned)adev->rmmio_size);
1528
1529         /* doorbell bar mapping */
1530         amdgpu_doorbell_init(adev);
1531
1532         /* io port mapping */
1533         for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
1534                 if (pci_resource_flags(adev->pdev, i) & IORESOURCE_IO) {
1535                         adev->rio_mem_size = pci_resource_len(adev->pdev, i);
1536                         adev->rio_mem = pci_iomap(adev->pdev, i, adev->rio_mem_size);
1537                         break;
1538                 }
1539         }
1540         if (adev->rio_mem == NULL)
1541                 DRM_ERROR("Unable to find PCI I/O BAR\n");
1542
1543         /* early init functions */
1544         r = amdgpu_early_init(adev);
1545         if (r)
1546                 return r;
1547
1548         /* if we have > 1 VGA cards, then disable the amdgpu VGA resources */
1549         /* this will fail for cards that aren't VGA class devices, just
1550          * ignore it */
1551         vga_client_register(adev->pdev, adev, NULL, amdgpu_vga_set_decode);
1552
1553         if (amdgpu_runtime_pm == 1)
1554                 runtime = true;
1555         if (amdgpu_device_is_px(ddev))
1556                 runtime = true;
1557         vga_switcheroo_register_client(adev->pdev, &amdgpu_switcheroo_ops, runtime);
1558         if (runtime)
1559                 vga_switcheroo_init_domain_pm_ops(adev->dev, &adev->vga_pm_domain);
1560
1561         /* Read BIOS */
1562         if (!amdgpu_get_bios(adev)) {
1563                 r = -EINVAL;
1564                 goto failed;
1565         }
1566         /* Must be an ATOMBIOS */
1567         if (!adev->is_atom_bios) {
1568                 dev_err(adev->dev, "Expecting atombios for GPU\n");
1569                 r = -EINVAL;
1570                 goto failed;
1571         }
1572         r = amdgpu_atombios_init(adev);
1573         if (r) {
1574                 dev_err(adev->dev, "amdgpu_atombios_init failed\n");
1575                 goto failed;
1576         }
1577
1578         /* See if the asic supports SR-IOV */
1579         adev->virtualization.supports_sr_iov =
1580                 amdgpu_atombios_has_gpu_virtualization_table(adev);
1581
1582         /* Check if we are executing in a virtualized environment */
1583         adev->virtualization.is_virtual = amdgpu_device_is_virtual();
1584         adev->virtualization.caps = amdgpu_asic_get_virtual_caps(adev);
1585
1586         /* Post card if necessary */
1587         if (!amdgpu_card_posted(adev) ||
1588             (adev->virtualization.is_virtual &&
1589              !(adev->virtualization.caps & AMDGPU_VIRT_CAPS_SRIOV_EN))) {
1590                 if (!adev->bios) {
1591                         dev_err(adev->dev, "Card not posted and no BIOS - ignoring\n");
1592                         r = -EINVAL;
1593                         goto failed;
1594                 }
1595                 DRM_INFO("GPU not posted. posting now...\n");
1596                 amdgpu_atom_asic_init(adev->mode_info.atom_context);
1597         }
1598
1599         /* Initialize clocks */
1600         r = amdgpu_atombios_get_clock_info(adev);
1601         if (r) {
1602                 dev_err(adev->dev, "amdgpu_atombios_get_clock_info failed\n");
1603                 goto failed;
1604         }
1605         /* init i2c buses */
1606         amdgpu_atombios_i2c_init(adev);
1607
1608         /* Fence driver */
1609         r = amdgpu_fence_driver_init(adev);
1610         if (r) {
1611                 dev_err(adev->dev, "amdgpu_fence_driver_init failed\n");
1612                 goto failed;
1613         }
1614
1615         /* init the mode config */
1616         drm_mode_config_init(adev->ddev);
1617
1618         r = amdgpu_init(adev);
1619         if (r) {
1620                 dev_err(adev->dev, "amdgpu_init failed\n");
1621                 amdgpu_fini(adev);
1622                 goto failed;
1623         }
1624
1625         adev->accel_working = true;
1626
1627         amdgpu_fbdev_init(adev);
1628
1629         r = amdgpu_ib_pool_init(adev);
1630         if (r) {
1631                 dev_err(adev->dev, "IB initialization failed (%d).\n", r);
1632                 goto failed;
1633         }
1634
1635         r = amdgpu_ib_ring_tests(adev);
1636         if (r)
1637                 DRM_ERROR("ib ring test failed (%d).\n", r);
1638
1639         r = amdgpu_gem_debugfs_init(adev);
1640         if (r) {
1641                 DRM_ERROR("registering gem debugfs failed (%d).\n", r);
1642         }
1643
1644         r = amdgpu_debugfs_regs_init(adev);
1645         if (r) {
1646                 DRM_ERROR("registering register debugfs failed (%d).\n", r);
1647         }
1648
1649         r = amdgpu_debugfs_firmware_init(adev);
1650         if (r) {
1651                 DRM_ERROR("registering firmware debugfs failed (%d).\n", r);
1652                 return r;
1653         }
1654
1655         if ((amdgpu_testing & 1)) {
1656                 if (adev->accel_working)
1657                         amdgpu_test_moves(adev);
1658                 else
1659                         DRM_INFO("amdgpu: acceleration disabled, skipping move tests\n");
1660         }
1661         if ((amdgpu_testing & 2)) {
1662                 if (adev->accel_working)
1663                         amdgpu_test_syncing(adev);
1664                 else
1665                         DRM_INFO("amdgpu: acceleration disabled, skipping sync tests\n");
1666         }
1667         if (amdgpu_benchmarking) {
1668                 if (adev->accel_working)
1669                         amdgpu_benchmark(adev, amdgpu_benchmarking);
1670                 else
1671                         DRM_INFO("amdgpu: acceleration disabled, skipping benchmarks\n");
1672         }
1673
1674         /* enable clockgating, etc. after ib tests, etc. since some blocks require
1675          * explicit gating rather than handling it automatically.
1676          */
1677         r = amdgpu_late_init(adev);
1678         if (r) {
1679                 dev_err(adev->dev, "amdgpu_late_init failed\n");
1680                 goto failed;
1681         }
1682
1683         return 0;
1684
1685 failed:
1686         if (runtime)
1687                 vga_switcheroo_fini_domain_pm_ops(adev->dev);
1688         return r;
1689 }
1690
1691 static void amdgpu_debugfs_remove_files(struct amdgpu_device *adev);
1692
1693 /**
1694  * amdgpu_device_fini - tear down the driver
1695  *
1696  * @adev: amdgpu_device pointer
1697  *
1698  * Tear down the driver info (all asics).
1699  * Called at driver shutdown.
1700  */
1701 void amdgpu_device_fini(struct amdgpu_device *adev)
1702 {
1703         int r;
1704
1705         DRM_INFO("amdgpu: finishing device.\n");
1706         adev->shutdown = true;
1707         /* evict vram memory */
1708         amdgpu_bo_evict_vram(adev);
1709         amdgpu_ib_pool_fini(adev);
1710         amdgpu_fence_driver_fini(adev);
1711         amdgpu_fbdev_fini(adev);
1712         r = amdgpu_fini(adev);
1713         kfree(adev->ip_block_status);
1714         adev->ip_block_status = NULL;
1715         adev->accel_working = false;
1716         /* free i2c buses */
1717         amdgpu_i2c_fini(adev);
1718         amdgpu_atombios_fini(adev);
1719         kfree(adev->bios);
1720         adev->bios = NULL;
1721         vga_switcheroo_unregister_client(adev->pdev);
1722         if (adev->flags & AMD_IS_PX)
1723                 vga_switcheroo_fini_domain_pm_ops(adev->dev);
1724         vga_client_register(adev->pdev, NULL, NULL, NULL);
1725         if (adev->rio_mem)
1726                 pci_iounmap(adev->pdev, adev->rio_mem);
1727         adev->rio_mem = NULL;
1728         iounmap(adev->rmmio);
1729         adev->rmmio = NULL;
1730         amdgpu_doorbell_fini(adev);
1731         amdgpu_debugfs_regs_cleanup(adev);
1732         amdgpu_debugfs_remove_files(adev);
1733 }
1734
1735
1736 /*
1737  * Suspend & resume.
1738  */
1739 /**
1740  * amdgpu_suspend_kms - initiate device suspend
1741  *
1742  * @pdev: drm dev pointer
1743  * @state: suspend state
1744  *
1745  * Puts the hw in the suspend state (all asics).
1746  * Returns 0 for success or an error on failure.
1747  * Called at driver suspend.
1748  */
1749 int amdgpu_suspend_kms(struct drm_device *dev, bool suspend, bool fbcon)
1750 {
1751         struct amdgpu_device *adev;
1752         struct drm_crtc *crtc;
1753         struct drm_connector *connector;
1754         int r;
1755
1756         if (dev == NULL || dev->dev_private == NULL) {
1757                 return -ENODEV;
1758         }
1759
1760         adev = dev->dev_private;
1761
1762         if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1763                 return 0;
1764
1765         drm_kms_helper_poll_disable(dev);
1766
1767         /* turn off display hw */
1768         drm_modeset_lock_all(dev);
1769         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1770                 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
1771         }
1772         drm_modeset_unlock_all(dev);
1773
1774         /* unpin the front buffers and cursors */
1775         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1776                 struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
1777                 struct amdgpu_framebuffer *rfb = to_amdgpu_framebuffer(crtc->primary->fb);
1778                 struct amdgpu_bo *robj;
1779
1780                 if (amdgpu_crtc->cursor_bo) {
1781                         struct amdgpu_bo *aobj = gem_to_amdgpu_bo(amdgpu_crtc->cursor_bo);
1782                         r = amdgpu_bo_reserve(aobj, false);
1783                         if (r == 0) {
1784                                 amdgpu_bo_unpin(aobj);
1785                                 amdgpu_bo_unreserve(aobj);
1786                         }
1787                 }
1788
1789                 if (rfb == NULL || rfb->obj == NULL) {
1790                         continue;
1791                 }
1792                 robj = gem_to_amdgpu_bo(rfb->obj);
1793                 /* don't unpin kernel fb objects */
1794                 if (!amdgpu_fbdev_robj_is_fb(adev, robj)) {
1795                         r = amdgpu_bo_reserve(robj, false);
1796                         if (r == 0) {
1797                                 amdgpu_bo_unpin(robj);
1798                                 amdgpu_bo_unreserve(robj);
1799                         }
1800                 }
1801         }
1802         /* evict vram memory */
1803         amdgpu_bo_evict_vram(adev);
1804
1805         amdgpu_fence_driver_suspend(adev);
1806
1807         r = amdgpu_suspend(adev);
1808
1809         /* evict remaining vram memory */
1810         amdgpu_bo_evict_vram(adev);
1811
1812         pci_save_state(dev->pdev);
1813         if (suspend) {
1814                 /* Shut down the device */
1815                 pci_disable_device(dev->pdev);
1816                 pci_set_power_state(dev->pdev, PCI_D3hot);
1817         }
1818
1819         if (fbcon) {
1820                 console_lock();
1821                 amdgpu_fbdev_set_suspend(adev, 1);
1822                 console_unlock();
1823         }
1824         return 0;
1825 }
1826
1827 /**
1828  * amdgpu_resume_kms - initiate device resume
1829  *
1830  * @pdev: drm dev pointer
1831  *
1832  * Bring the hw back to operating state (all asics).
1833  * Returns 0 for success or an error on failure.
1834  * Called at driver resume.
1835  */
1836 int amdgpu_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
1837 {
1838         struct drm_connector *connector;
1839         struct amdgpu_device *adev = dev->dev_private;
1840         struct drm_crtc *crtc;
1841         int r;
1842
1843         if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1844                 return 0;
1845
1846         if (fbcon) {
1847                 console_lock();
1848         }
1849         if (resume) {
1850                 pci_set_power_state(dev->pdev, PCI_D0);
1851                 pci_restore_state(dev->pdev);
1852                 if (pci_enable_device(dev->pdev)) {
1853                         if (fbcon)
1854                                 console_unlock();
1855                         return -1;
1856                 }
1857         }
1858
1859         /* post card */
1860         if (!amdgpu_card_posted(adev))
1861                 amdgpu_atom_asic_init(adev->mode_info.atom_context);
1862
1863         r = amdgpu_resume(adev);
1864         if (r)
1865                 DRM_ERROR("amdgpu_resume failed (%d).\n", r);
1866
1867         amdgpu_fence_driver_resume(adev);
1868
1869         if (resume) {
1870                 r = amdgpu_ib_ring_tests(adev);
1871                 if (r)
1872                         DRM_ERROR("ib ring test failed (%d).\n", r);
1873         }
1874
1875         r = amdgpu_late_init(adev);
1876         if (r)
1877                 return r;
1878
1879         /* pin cursors */
1880         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1881                 struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
1882
1883                 if (amdgpu_crtc->cursor_bo) {
1884                         struct amdgpu_bo *aobj = gem_to_amdgpu_bo(amdgpu_crtc->cursor_bo);
1885                         r = amdgpu_bo_reserve(aobj, false);
1886                         if (r == 0) {
1887                                 r = amdgpu_bo_pin(aobj,
1888                                                   AMDGPU_GEM_DOMAIN_VRAM,
1889                                                   &amdgpu_crtc->cursor_addr);
1890                                 if (r != 0)
1891                                         DRM_ERROR("Failed to pin cursor BO (%d)\n", r);
1892                                 amdgpu_bo_unreserve(aobj);
1893                         }
1894                 }
1895         }
1896
1897         /* blat the mode back in */
1898         if (fbcon) {
1899                 drm_helper_resume_force_mode(dev);
1900                 /* turn on display hw */
1901                 drm_modeset_lock_all(dev);
1902                 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1903                         drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
1904                 }
1905                 drm_modeset_unlock_all(dev);
1906         }
1907
1908         drm_kms_helper_poll_enable(dev);
1909         drm_helper_hpd_irq_event(dev);
1910
1911         if (fbcon) {
1912                 amdgpu_fbdev_set_suspend(adev, 0);
1913                 console_unlock();
1914         }
1915
1916         return 0;
1917 }
1918
1919 /**
1920  * amdgpu_gpu_reset - reset the asic
1921  *
1922  * @adev: amdgpu device pointer
1923  *
1924  * Attempt the reset the GPU if it has hung (all asics).
1925  * Returns 0 for success or an error on failure.
1926  */
1927 int amdgpu_gpu_reset(struct amdgpu_device *adev)
1928 {
1929         unsigned ring_sizes[AMDGPU_MAX_RINGS];
1930         uint32_t *ring_data[AMDGPU_MAX_RINGS];
1931
1932         bool saved = false;
1933
1934         int i, r;
1935         int resched;
1936
1937         atomic_inc(&adev->gpu_reset_counter);
1938
1939         /* block TTM */
1940         resched = ttm_bo_lock_delayed_workqueue(&adev->mman.bdev);
1941
1942         /* block scheduler */
1943         for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
1944                 struct amdgpu_ring *ring = adev->rings[i];
1945
1946                 if (!ring)
1947                         continue;
1948                 kthread_park(ring->sched.thread);
1949                 amd_sched_hw_job_reset(&ring->sched);
1950         }
1951         /* after all hw jobs are reset, hw fence is meaningless, so force_completion */
1952         amdgpu_fence_driver_force_completion(adev);
1953
1954         /* save scratch */
1955         amdgpu_atombios_scratch_regs_save(adev);
1956         r = amdgpu_suspend(adev);
1957
1958         for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
1959                 struct amdgpu_ring *ring = adev->rings[i];
1960                 if (!ring)
1961                         continue;
1962
1963                 ring_sizes[i] = amdgpu_ring_backup(ring, &ring_data[i]);
1964                 if (ring_sizes[i]) {
1965                         saved = true;
1966                         dev_info(adev->dev, "Saved %d dwords of commands "
1967                                  "on ring %d.\n", ring_sizes[i], i);
1968                 }
1969         }
1970
1971 retry:
1972         /* Disable fb access */
1973         if (adev->mode_info.num_crtc) {
1974                 struct amdgpu_mode_mc_save save;
1975                 amdgpu_display_stop_mc_access(adev, &save);
1976                 amdgpu_wait_for_idle(adev, AMD_IP_BLOCK_TYPE_GMC);
1977         }
1978
1979         r = amdgpu_asic_reset(adev);
1980         /* post card */
1981         amdgpu_atom_asic_init(adev->mode_info.atom_context);
1982
1983         if (!r) {
1984                 dev_info(adev->dev, "GPU reset succeeded, trying to resume\n");
1985                 r = amdgpu_resume(adev);
1986         }
1987         /* restore scratch */
1988         amdgpu_atombios_scratch_regs_restore(adev);
1989         if (!r) {
1990                 for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
1991                         struct amdgpu_ring *ring = adev->rings[i];
1992                         if (!ring)
1993                                 continue;
1994                         amd_sched_job_recovery(&ring->sched);
1995                         kthread_unpark(ring->sched.thread);
1996                         kfree(ring_data[i]);
1997                         ring_sizes[i] = 0;
1998                         ring_data[i] = NULL;
1999                 }
2000
2001                 r = amdgpu_ib_ring_tests(adev);
2002                 if (r) {
2003                         dev_err(adev->dev, "ib ring test failed (%d).\n", r);
2004                         if (saved) {
2005                                 saved = false;
2006                                 r = amdgpu_suspend(adev);
2007                                 goto retry;
2008                         }
2009                 }
2010         } else {
2011                 dev_err(adev->dev, "asic resume failed (%d).\n", r);
2012                 for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
2013                         if (adev->rings[i]) {
2014                                 kthread_unpark(adev->rings[i]->sched.thread);
2015                                 kfree(ring_data[i]);
2016                         }
2017                 }
2018         }
2019
2020         drm_helper_resume_force_mode(adev->ddev);
2021
2022         ttm_bo_unlock_delayed_workqueue(&adev->mman.bdev, resched);
2023         if (r) {
2024                 /* bad news, how to tell it to userspace ? */
2025                 dev_info(adev->dev, "GPU reset failed\n");
2026         }
2027         amdgpu_irq_gpu_reset_resume_helper(adev);
2028
2029         return r;
2030 }
2031
2032 void amdgpu_get_pcie_info(struct amdgpu_device *adev)
2033 {
2034         u32 mask;
2035         int ret;
2036
2037         if (amdgpu_pcie_gen_cap)
2038                 adev->pm.pcie_gen_mask = amdgpu_pcie_gen_cap;
2039
2040         if (amdgpu_pcie_lane_cap)
2041                 adev->pm.pcie_mlw_mask = amdgpu_pcie_lane_cap;
2042
2043         /* covers APUs as well */
2044         if (pci_is_root_bus(adev->pdev->bus)) {
2045                 if (adev->pm.pcie_gen_mask == 0)
2046                         adev->pm.pcie_gen_mask = AMDGPU_DEFAULT_PCIE_GEN_MASK;
2047                 if (adev->pm.pcie_mlw_mask == 0)
2048                         adev->pm.pcie_mlw_mask = AMDGPU_DEFAULT_PCIE_MLW_MASK;
2049                 return;
2050         }
2051
2052         if (adev->pm.pcie_gen_mask == 0) {
2053                 ret = drm_pcie_get_speed_cap_mask(adev->ddev, &mask);
2054                 if (!ret) {
2055                         adev->pm.pcie_gen_mask = (CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1 |
2056                                                   CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2 |
2057                                                   CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3);
2058
2059                         if (mask & DRM_PCIE_SPEED_25)
2060                                 adev->pm.pcie_gen_mask |= CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1;
2061                         if (mask & DRM_PCIE_SPEED_50)
2062                                 adev->pm.pcie_gen_mask |= CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2;
2063                         if (mask & DRM_PCIE_SPEED_80)
2064                                 adev->pm.pcie_gen_mask |= CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3;
2065                 } else {
2066                         adev->pm.pcie_gen_mask = AMDGPU_DEFAULT_PCIE_GEN_MASK;
2067                 }
2068         }
2069         if (adev->pm.pcie_mlw_mask == 0) {
2070                 ret = drm_pcie_get_max_link_width(adev->ddev, &mask);
2071                 if (!ret) {
2072                         switch (mask) {
2073                         case 32:
2074                                 adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X32 |
2075                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X16 |
2076                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 |
2077                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 |
2078                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
2079                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
2080                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
2081                                 break;
2082                         case 16:
2083                                 adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X16 |
2084                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 |
2085                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 |
2086                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
2087                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
2088                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
2089                                 break;
2090                         case 12:
2091                                 adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 |
2092                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 |
2093                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
2094                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
2095                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
2096                                 break;
2097                         case 8:
2098                                 adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 |
2099                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
2100                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
2101                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
2102                                 break;
2103                         case 4:
2104                                 adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
2105                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
2106                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
2107                                 break;
2108                         case 2:
2109                                 adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
2110                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
2111                                 break;
2112                         case 1:
2113                                 adev->pm.pcie_mlw_mask = CAIL_PCIE_LINK_WIDTH_SUPPORT_X1;
2114                                 break;
2115                         default:
2116                                 break;
2117                         }
2118                 } else {
2119                         adev->pm.pcie_mlw_mask = AMDGPU_DEFAULT_PCIE_MLW_MASK;
2120                 }
2121         }
2122 }
2123
2124 /*
2125  * Debugfs
2126  */
2127 int amdgpu_debugfs_add_files(struct amdgpu_device *adev,
2128                              const struct drm_info_list *files,
2129                              unsigned nfiles)
2130 {
2131         unsigned i;
2132
2133         for (i = 0; i < adev->debugfs_count; i++) {
2134                 if (adev->debugfs[i].files == files) {
2135                         /* Already registered */
2136                         return 0;
2137                 }
2138         }
2139
2140         i = adev->debugfs_count + 1;
2141         if (i > AMDGPU_DEBUGFS_MAX_COMPONENTS) {
2142                 DRM_ERROR("Reached maximum number of debugfs components.\n");
2143                 DRM_ERROR("Report so we increase "
2144                           "AMDGPU_DEBUGFS_MAX_COMPONENTS.\n");
2145                 return -EINVAL;
2146         }
2147         adev->debugfs[adev->debugfs_count].files = files;
2148         adev->debugfs[adev->debugfs_count].num_files = nfiles;
2149         adev->debugfs_count = i;
2150 #if defined(CONFIG_DEBUG_FS)
2151         drm_debugfs_create_files(files, nfiles,
2152                                  adev->ddev->control->debugfs_root,
2153                                  adev->ddev->control);
2154         drm_debugfs_create_files(files, nfiles,
2155                                  adev->ddev->primary->debugfs_root,
2156                                  adev->ddev->primary);
2157 #endif
2158         return 0;
2159 }
2160
2161 static void amdgpu_debugfs_remove_files(struct amdgpu_device *adev)
2162 {
2163 #if defined(CONFIG_DEBUG_FS)
2164         unsigned i;
2165
2166         for (i = 0; i < adev->debugfs_count; i++) {
2167                 drm_debugfs_remove_files(adev->debugfs[i].files,
2168                                          adev->debugfs[i].num_files,
2169                                          adev->ddev->control);
2170                 drm_debugfs_remove_files(adev->debugfs[i].files,
2171                                          adev->debugfs[i].num_files,
2172                                          adev->ddev->primary);
2173         }
2174 #endif
2175 }
2176
2177 #if defined(CONFIG_DEBUG_FS)
2178
2179 static ssize_t amdgpu_debugfs_regs_read(struct file *f, char __user *buf,
2180                                         size_t size, loff_t *pos)
2181 {
2182         struct amdgpu_device *adev = f->f_inode->i_private;
2183         ssize_t result = 0;
2184         int r;
2185         bool use_bank;
2186         unsigned instance_bank, sh_bank, se_bank;
2187
2188         if (size & 0x3 || *pos & 0x3)
2189                 return -EINVAL;
2190
2191         if (*pos & (1ULL << 62)) {
2192                 se_bank = (*pos >> 24) & 0x3FF;
2193                 sh_bank = (*pos >> 34) & 0x3FF;
2194                 instance_bank = (*pos >> 44) & 0x3FF;
2195                 use_bank = 1;
2196                 *pos &= 0xFFFFFF;
2197         } else {
2198                 use_bank = 0;
2199         }
2200
2201         if (use_bank) {
2202                 if (sh_bank >= adev->gfx.config.max_sh_per_se ||
2203                     se_bank >= adev->gfx.config.max_shader_engines)
2204                         return -EINVAL;
2205                 mutex_lock(&adev->grbm_idx_mutex);
2206                 amdgpu_gfx_select_se_sh(adev, se_bank,
2207                                         sh_bank, instance_bank);
2208         }
2209
2210         while (size) {
2211                 uint32_t value;
2212
2213                 if (*pos > adev->rmmio_size)
2214                         goto end;
2215
2216                 value = RREG32(*pos >> 2);
2217                 r = put_user(value, (uint32_t *)buf);
2218                 if (r) {
2219                         result = r;
2220                         goto end;
2221                 }
2222
2223                 result += 4;
2224                 buf += 4;
2225                 *pos += 4;
2226                 size -= 4;
2227         }
2228
2229 end:
2230         if (use_bank) {
2231                 amdgpu_gfx_select_se_sh(adev, 0xffffffff, 0xffffffff, 0xffffffff);
2232                 mutex_unlock(&adev->grbm_idx_mutex);
2233         }
2234
2235         return result;
2236 }
2237
2238 static ssize_t amdgpu_debugfs_regs_write(struct file *f, const char __user *buf,
2239                                          size_t size, loff_t *pos)
2240 {
2241         struct amdgpu_device *adev = f->f_inode->i_private;
2242         ssize_t result = 0;
2243         int r;
2244
2245         if (size & 0x3 || *pos & 0x3)
2246                 return -EINVAL;
2247
2248         while (size) {
2249                 uint32_t value;
2250
2251                 if (*pos > adev->rmmio_size)
2252                         return result;
2253
2254                 r = get_user(value, (uint32_t *)buf);
2255                 if (r)
2256                         return r;
2257
2258                 WREG32(*pos >> 2, value);
2259
2260                 result += 4;
2261                 buf += 4;
2262                 *pos += 4;
2263                 size -= 4;
2264         }
2265
2266         return result;
2267 }
2268
2269 static ssize_t amdgpu_debugfs_regs_pcie_read(struct file *f, char __user *buf,
2270                                         size_t size, loff_t *pos)
2271 {
2272         struct amdgpu_device *adev = f->f_inode->i_private;
2273         ssize_t result = 0;
2274         int r;
2275
2276         if (size & 0x3 || *pos & 0x3)
2277                 return -EINVAL;
2278
2279         while (size) {
2280                 uint32_t value;
2281
2282                 value = RREG32_PCIE(*pos >> 2);
2283                 r = put_user(value, (uint32_t *)buf);
2284                 if (r)
2285                         return r;
2286
2287                 result += 4;
2288                 buf += 4;
2289                 *pos += 4;
2290                 size -= 4;
2291         }
2292
2293         return result;
2294 }
2295
2296 static ssize_t amdgpu_debugfs_regs_pcie_write(struct file *f, const char __user *buf,
2297                                          size_t size, loff_t *pos)
2298 {
2299         struct amdgpu_device *adev = f->f_inode->i_private;
2300         ssize_t result = 0;
2301         int r;
2302
2303         if (size & 0x3 || *pos & 0x3)
2304                 return -EINVAL;
2305
2306         while (size) {
2307                 uint32_t value;
2308
2309                 r = get_user(value, (uint32_t *)buf);
2310                 if (r)
2311                         return r;
2312
2313                 WREG32_PCIE(*pos >> 2, value);
2314
2315                 result += 4;
2316                 buf += 4;
2317                 *pos += 4;
2318                 size -= 4;
2319         }
2320
2321         return result;
2322 }
2323
2324 static ssize_t amdgpu_debugfs_regs_didt_read(struct file *f, char __user *buf,
2325                                         size_t size, loff_t *pos)
2326 {
2327         struct amdgpu_device *adev = f->f_inode->i_private;
2328         ssize_t result = 0;
2329         int r;
2330
2331         if (size & 0x3 || *pos & 0x3)
2332                 return -EINVAL;
2333
2334         while (size) {
2335                 uint32_t value;
2336
2337                 value = RREG32_DIDT(*pos >> 2);
2338                 r = put_user(value, (uint32_t *)buf);
2339                 if (r)
2340                         return r;
2341
2342                 result += 4;
2343                 buf += 4;
2344                 *pos += 4;
2345                 size -= 4;
2346         }
2347
2348         return result;
2349 }
2350
2351 static ssize_t amdgpu_debugfs_regs_didt_write(struct file *f, const char __user *buf,
2352                                          size_t size, loff_t *pos)
2353 {
2354         struct amdgpu_device *adev = f->f_inode->i_private;
2355         ssize_t result = 0;
2356         int r;
2357
2358         if (size & 0x3 || *pos & 0x3)
2359                 return -EINVAL;
2360
2361         while (size) {
2362                 uint32_t value;
2363
2364                 r = get_user(value, (uint32_t *)buf);
2365                 if (r)
2366                         return r;
2367
2368                 WREG32_DIDT(*pos >> 2, value);
2369
2370                 result += 4;
2371                 buf += 4;
2372                 *pos += 4;
2373                 size -= 4;
2374         }
2375
2376         return result;
2377 }
2378
2379 static ssize_t amdgpu_debugfs_regs_smc_read(struct file *f, char __user *buf,
2380                                         size_t size, loff_t *pos)
2381 {
2382         struct amdgpu_device *adev = f->f_inode->i_private;
2383         ssize_t result = 0;
2384         int r;
2385
2386         if (size & 0x3 || *pos & 0x3)
2387                 return -EINVAL;
2388
2389         while (size) {
2390                 uint32_t value;
2391
2392                 value = RREG32_SMC(*pos >> 2);
2393                 r = put_user(value, (uint32_t *)buf);
2394                 if (r)
2395                         return r;
2396
2397                 result += 4;
2398                 buf += 4;
2399                 *pos += 4;
2400                 size -= 4;
2401         }
2402
2403         return result;
2404 }
2405
2406 static ssize_t amdgpu_debugfs_regs_smc_write(struct file *f, const char __user *buf,
2407                                          size_t size, loff_t *pos)
2408 {
2409         struct amdgpu_device *adev = f->f_inode->i_private;
2410         ssize_t result = 0;
2411         int r;
2412
2413         if (size & 0x3 || *pos & 0x3)
2414                 return -EINVAL;
2415
2416         while (size) {
2417                 uint32_t value;
2418
2419                 r = get_user(value, (uint32_t *)buf);
2420                 if (r)
2421                         return r;
2422
2423                 WREG32_SMC(*pos >> 2, value);
2424
2425                 result += 4;
2426                 buf += 4;
2427                 *pos += 4;
2428                 size -= 4;
2429         }
2430
2431         return result;
2432 }
2433
2434 static ssize_t amdgpu_debugfs_gca_config_read(struct file *f, char __user *buf,
2435                                         size_t size, loff_t *pos)
2436 {
2437         struct amdgpu_device *adev = f->f_inode->i_private;
2438         ssize_t result = 0;
2439         int r;
2440         uint32_t *config, no_regs = 0;
2441
2442         if (size & 0x3 || *pos & 0x3)
2443                 return -EINVAL;
2444
2445         config = kmalloc(256 * sizeof(*config), GFP_KERNEL);
2446         if (!config)
2447                 return -ENOMEM;
2448
2449         /* version, increment each time something is added */
2450         config[no_regs++] = 0;
2451         config[no_regs++] = adev->gfx.config.max_shader_engines;
2452         config[no_regs++] = adev->gfx.config.max_tile_pipes;
2453         config[no_regs++] = adev->gfx.config.max_cu_per_sh;
2454         config[no_regs++] = adev->gfx.config.max_sh_per_se;
2455         config[no_regs++] = adev->gfx.config.max_backends_per_se;
2456         config[no_regs++] = adev->gfx.config.max_texture_channel_caches;
2457         config[no_regs++] = adev->gfx.config.max_gprs;
2458         config[no_regs++] = adev->gfx.config.max_gs_threads;
2459         config[no_regs++] = adev->gfx.config.max_hw_contexts;
2460         config[no_regs++] = adev->gfx.config.sc_prim_fifo_size_frontend;
2461         config[no_regs++] = adev->gfx.config.sc_prim_fifo_size_backend;
2462         config[no_regs++] = adev->gfx.config.sc_hiz_tile_fifo_size;
2463         config[no_regs++] = adev->gfx.config.sc_earlyz_tile_fifo_size;
2464         config[no_regs++] = adev->gfx.config.num_tile_pipes;
2465         config[no_regs++] = adev->gfx.config.backend_enable_mask;
2466         config[no_regs++] = adev->gfx.config.mem_max_burst_length_bytes;
2467         config[no_regs++] = adev->gfx.config.mem_row_size_in_kb;
2468         config[no_regs++] = adev->gfx.config.shader_engine_tile_size;
2469         config[no_regs++] = adev->gfx.config.num_gpus;
2470         config[no_regs++] = adev->gfx.config.multi_gpu_tile_size;
2471         config[no_regs++] = adev->gfx.config.mc_arb_ramcfg;
2472         config[no_regs++] = adev->gfx.config.gb_addr_config;
2473         config[no_regs++] = adev->gfx.config.num_rbs;
2474
2475         while (size && (*pos < no_regs * 4)) {
2476                 uint32_t value;
2477
2478                 value = config[*pos >> 2];
2479                 r = put_user(value, (uint32_t *)buf);
2480                 if (r) {
2481                         kfree(config);
2482                         return r;
2483                 }
2484
2485                 result += 4;
2486                 buf += 4;
2487                 *pos += 4;
2488                 size -= 4;
2489         }
2490
2491         kfree(config);
2492         return result;
2493 }
2494
2495
2496 static const struct file_operations amdgpu_debugfs_regs_fops = {
2497         .owner = THIS_MODULE,
2498         .read = amdgpu_debugfs_regs_read,
2499         .write = amdgpu_debugfs_regs_write,
2500         .llseek = default_llseek
2501 };
2502 static const struct file_operations amdgpu_debugfs_regs_didt_fops = {
2503         .owner = THIS_MODULE,
2504         .read = amdgpu_debugfs_regs_didt_read,
2505         .write = amdgpu_debugfs_regs_didt_write,
2506         .llseek = default_llseek
2507 };
2508 static const struct file_operations amdgpu_debugfs_regs_pcie_fops = {
2509         .owner = THIS_MODULE,
2510         .read = amdgpu_debugfs_regs_pcie_read,
2511         .write = amdgpu_debugfs_regs_pcie_write,
2512         .llseek = default_llseek
2513 };
2514 static const struct file_operations amdgpu_debugfs_regs_smc_fops = {
2515         .owner = THIS_MODULE,
2516         .read = amdgpu_debugfs_regs_smc_read,
2517         .write = amdgpu_debugfs_regs_smc_write,
2518         .llseek = default_llseek
2519 };
2520
2521 static const struct file_operations amdgpu_debugfs_gca_config_fops = {
2522         .owner = THIS_MODULE,
2523         .read = amdgpu_debugfs_gca_config_read,
2524         .llseek = default_llseek
2525 };
2526
2527 static const struct file_operations *debugfs_regs[] = {
2528         &amdgpu_debugfs_regs_fops,
2529         &amdgpu_debugfs_regs_didt_fops,
2530         &amdgpu_debugfs_regs_pcie_fops,
2531         &amdgpu_debugfs_regs_smc_fops,
2532         &amdgpu_debugfs_gca_config_fops,
2533 };
2534
2535 static const char *debugfs_regs_names[] = {
2536         "amdgpu_regs",
2537         "amdgpu_regs_didt",
2538         "amdgpu_regs_pcie",
2539         "amdgpu_regs_smc",
2540         "amdgpu_gca_config",
2541 };
2542
2543 static int amdgpu_debugfs_regs_init(struct amdgpu_device *adev)
2544 {
2545         struct drm_minor *minor = adev->ddev->primary;
2546         struct dentry *ent, *root = minor->debugfs_root;
2547         unsigned i, j;
2548
2549         for (i = 0; i < ARRAY_SIZE(debugfs_regs); i++) {
2550                 ent = debugfs_create_file(debugfs_regs_names[i],
2551                                           S_IFREG | S_IRUGO, root,
2552                                           adev, debugfs_regs[i]);
2553                 if (IS_ERR(ent)) {
2554                         for (j = 0; j < i; j++) {
2555                                 debugfs_remove(adev->debugfs_regs[i]);
2556                                 adev->debugfs_regs[i] = NULL;
2557                         }
2558                         return PTR_ERR(ent);
2559                 }
2560
2561                 if (!i)
2562                         i_size_write(ent->d_inode, adev->rmmio_size);
2563                 adev->debugfs_regs[i] = ent;
2564         }
2565
2566         return 0;
2567 }
2568
2569 static void amdgpu_debugfs_regs_cleanup(struct amdgpu_device *adev)
2570 {
2571         unsigned i;
2572
2573         for (i = 0; i < ARRAY_SIZE(debugfs_regs); i++) {
2574                 if (adev->debugfs_regs[i]) {
2575                         debugfs_remove(adev->debugfs_regs[i]);
2576                         adev->debugfs_regs[i] = NULL;
2577                 }
2578         }
2579 }
2580
2581 int amdgpu_debugfs_init(struct drm_minor *minor)
2582 {
2583         return 0;
2584 }
2585
2586 void amdgpu_debugfs_cleanup(struct drm_minor *minor)
2587 {
2588 }
2589 #else
2590 static int amdgpu_debugfs_regs_init(struct amdgpu_device *adev)
2591 {
2592         return 0;
2593 }
2594 static void amdgpu_debugfs_regs_cleanup(struct amdgpu_device *adev) { }
2595 #endif