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/power_supply.h>
  29 #include <linux/kthread.h>
  30 #include <linux/module.h>
  31 #include <linux/console.h>
  32 #include <linux/slab.h>
  33 #include <linux/iommu.h>
  34 #include <linux/pci.h>
  35 #include <linux/devcoredump.h>
  36 #include <generated/utsrelease.h>
  37 #include <linux/pci-p2pdma.h>
  38 #include <linux/apple-gmux.h>
  39
  40 #include <drm/drm_aperture.h>
  41 #include <drm/drm_atomic_helper.h>
  42 #include <drm/drm_crtc_helper.h>
  43 #include <drm/drm_fb_helper.h>
  44 #include <drm/drm_probe_helper.h>
  45 #include <drm/amdgpu_drm.h>
  46 #include <linux/vgaarb.h>
  47 #include <linux/vga_switcheroo.h>
  48 #include <linux/efi.h>
  49 #include "amdgpu.h"
  50 #include "amdgpu_trace.h"
  51 #include "amdgpu_i2c.h"
  52 #include "atom.h"
  53 #include "amdgpu_atombios.h"
  54 #include "amdgpu_atomfirmware.h"
  55 #include "amd_pcie.h"
  56 #ifdef CONFIG_DRM_AMDGPU_SI
  57 #include "si.h"
  58 #endif
  59 #ifdef CONFIG_DRM_AMDGPU_CIK
  60 #include "cik.h"
  61 #endif
  62 #include "vi.h"
  63 #include "soc15.h"
  64 #include "nv.h"
  65 #include "bif/bif_4_1_d.h"
  66 #include <linux/firmware.h>
  67 #include "amdgpu_vf_error.h"
  68
  69 #include "amdgpu_amdkfd.h"
  70 #include "amdgpu_pm.h"
  71
  72 #include "amdgpu_xgmi.h"
  73 #include "amdgpu_ras.h"
  74 #include "amdgpu_pmu.h"
  75 #include "amdgpu_fru_eeprom.h"
  76 #include "amdgpu_reset.h"
  77
  78 #include <linux/suspend.h>
  79 #include <drm/task_barrier.h>
  80 #include <linux/pm_runtime.h>
  81
  82 #include <drm/drm_drv.h>
  83
  84 #if IS_ENABLED(CONFIG_X86)
  85 #include <asm/intel-family.h>
  86 #endif
  87
  88 MODULE_FIRMWARE("amdgpu/vega10_gpu_info.bin");
  89 MODULE_FIRMWARE("amdgpu/vega12_gpu_info.bin");
  90 MODULE_FIRMWARE("amdgpu/raven_gpu_info.bin");
  91 MODULE_FIRMWARE("amdgpu/picasso_gpu_info.bin");
  92 MODULE_FIRMWARE("amdgpu/raven2_gpu_info.bin");
  93 MODULE_FIRMWARE("amdgpu/arcturus_gpu_info.bin");
  94 MODULE_FIRMWARE("amdgpu/navi12_gpu_info.bin");
  95
  96 #define AMDGPU_RESUME_MS                2000
  97 #define AMDGPU_MAX_RETRY_LIMIT          2
  98 #define AMDGPU_RETRY_SRIOV_RESET(r) ((r) == -EBUSY || (r) == -ETIMEDOUT || (r) == -EINVAL)
  99
 100 static const struct drm_driver amdgpu_kms_driver;
 101
 102 const char *amdgpu_asic_name[] = {
 103         "TAHITI",
 104         "PITCAIRN",
 105         "VERDE",
 106         "OLAND",
 107         "HAINAN",
 108         "BONAIRE",
 109         "KAVERI",
 110         "KABINI",
 111         "HAWAII",
 112         "MULLINS",
 113         "TOPAZ",
 114         "TONGA",
 115         "FIJI",
 116         "CARRIZO",
 117         "STONEY",
 118         "POLARIS10",
 119         "POLARIS11",
 120         "POLARIS12",
 121         "VEGAM",
 122         "VEGA10",
 123         "VEGA12",
 124         "VEGA20",
 125         "RAVEN",
 126         "ARCTURUS",
 127         "RENOIR",
 128         "ALDEBARAN",
 129         "NAVI10",
 130         "CYAN_SKILLFISH",
 131         "NAVI14",
 132         "NAVI12",
 133         "SIENNA_CICHLID",
 134         "NAVY_FLOUNDER",
 135         "VANGOGH",
 136         "DIMGREY_CAVEFISH",
 137         "BEIGE_GOBY",
 138         "YELLOW_CARP",
 139         "IP DISCOVERY",
 140         "LAST",
 141 };
 142
 143 /**
 144  * DOC: pcie_replay_count
 145  *
 146  * The amdgpu driver provides a sysfs API for reporting the total number
 147  * of PCIe replays (NAKs)
 148  * The file pcie_replay_count is used for this and returns the total
 149  * number of replays as a sum of the NAKs generated and NAKs received
 150  */
 151
 152 static ssize_t amdgpu_device_get_pcie_replay_count(struct device *dev,
 153                 struct device_attribute *attr, char *buf)
 154 {
 155         struct drm_device *ddev = dev_get_drvdata(dev);
 156         struct amdgpu_device *adev = drm_to_adev(ddev);
 157         uint64_t cnt = amdgpu_asic_get_pcie_replay_count(adev);
 158
 159         return sysfs_emit(buf, "%llu\n", cnt);
 160 }
 161
 162 static DEVICE_ATTR(pcie_replay_count, S_IRUGO,
 163                 amdgpu_device_get_pcie_replay_count, NULL);
 164
 165 static void amdgpu_device_get_pcie_info(struct amdgpu_device *adev);
 166
 167 /**
 168  * DOC: product_name
 169  *
 170  * The amdgpu driver provides a sysfs API for reporting the product name
 171  * for the device
 172  * The file product_name is used for this and returns the product name
 173  * as returned from the FRU.
 174  * NOTE: This is only available for certain server cards
 175  */
 176
 177 static ssize_t amdgpu_device_get_product_name(struct device *dev,
 178                 struct device_attribute *attr, char *buf)
 179 {
 180         struct drm_device *ddev = dev_get_drvdata(dev);
 181         struct amdgpu_device *adev = drm_to_adev(ddev);
 182
 183         return sysfs_emit(buf, "%s\n", adev->product_name);
 184 }
 185
 186 static DEVICE_ATTR(product_name, S_IRUGO,
 187                 amdgpu_device_get_product_name, NULL);
 188
 189 /**
 190  * DOC: product_number
 191  *
 192  * The amdgpu driver provides a sysfs API for reporting the part number
 193  * for the device
 194  * The file product_number is used for this and returns the part number
 195  * as returned from the FRU.
 196  * NOTE: This is only available for certain server cards
 197  */
 198
 199 static ssize_t amdgpu_device_get_product_number(struct device *dev,
 200                 struct device_attribute *attr, char *buf)
 201 {
 202         struct drm_device *ddev = dev_get_drvdata(dev);
 203         struct amdgpu_device *adev = drm_to_adev(ddev);
 204
 205         return sysfs_emit(buf, "%s\n", adev->product_number);
 206 }
 207
 208 static DEVICE_ATTR(product_number, S_IRUGO,
 209                 amdgpu_device_get_product_number, NULL);
 210
 211 /**
 212  * DOC: serial_number
 213  *
 214  * The amdgpu driver provides a sysfs API for reporting the serial number
 215  * for the device
 216  * The file serial_number is used for this and returns the serial number
 217  * as returned from the FRU.
 218  * NOTE: This is only available for certain server cards
 219  */
 220
 221 static ssize_t amdgpu_device_get_serial_number(struct device *dev,
 222                 struct device_attribute *attr, char *buf)
 223 {
 224         struct drm_device *ddev = dev_get_drvdata(dev);
 225         struct amdgpu_device *adev = drm_to_adev(ddev);
 226
 227         return sysfs_emit(buf, "%s\n", adev->serial);
 228 }
 229
 230 static DEVICE_ATTR(serial_number, S_IRUGO,
 231                 amdgpu_device_get_serial_number, NULL);
 232
 233 /**
 234  * amdgpu_device_supports_px - Is the device a dGPU with ATPX power control
 235  *
 236  * @dev: drm_device pointer
 237  *
 238  * Returns true if the device is a dGPU with ATPX power control,
 239  * otherwise return false.
 240  */
 241 bool amdgpu_device_supports_px(struct drm_device *dev)
 242 {
 243         struct amdgpu_device *adev = drm_to_adev(dev);
 244
 245         if ((adev->flags & AMD_IS_PX) && !amdgpu_is_atpx_hybrid())
 246                 return true;
 247         return false;
 248 }
 249
 250 /**
 251  * amdgpu_device_supports_boco - Is the device a dGPU with ACPI power resources
 252  *
 253  * @dev: drm_device pointer
 254  *
 255  * Returns true if the device is a dGPU with ACPI power control,
 256  * otherwise return false.
 257  */
 258 bool amdgpu_device_supports_boco(struct drm_device *dev)
 259 {
 260         struct amdgpu_device *adev = drm_to_adev(dev);
 261
 262         if (adev->has_pr3 ||
 263             ((adev->flags & AMD_IS_PX) && amdgpu_is_atpx_hybrid()))
 264                 return true;
 265         return false;
 266 }
 267
 268 /**
 269  * amdgpu_device_supports_baco - Does the device support BACO
 270  *
 271  * @dev: drm_device pointer
 272  *
 273  * Returns true if the device supporte BACO,
 274  * otherwise return false.
 275  */
 276 bool amdgpu_device_supports_baco(struct drm_device *dev)
 277 {
 278         struct amdgpu_device *adev = drm_to_adev(dev);
 279
 280         return amdgpu_asic_supports_baco(adev);
 281 }
 282
 283 /**
 284  * amdgpu_device_supports_smart_shift - Is the device dGPU with
 285  * smart shift support
 286  *
 287  * @dev: drm_device pointer
 288  *
 289  * Returns true if the device is a dGPU with Smart Shift support,
 290  * otherwise returns false.
 291  */
 292 bool amdgpu_device_supports_smart_shift(struct drm_device *dev)
 293 {
 294         return (amdgpu_device_supports_boco(dev) &&
 295                 amdgpu_acpi_is_power_shift_control_supported());
 296 }
 297
 298 /*
 299  * VRAM access helper functions
 300  */
 301
 302 /**
 303  * amdgpu_device_mm_access - access vram by MM_INDEX/MM_DATA
 304  *
 305  * @adev: amdgpu_device pointer
 306  * @pos: offset of the buffer in vram
 307  * @buf: virtual address of the buffer in system memory
 308  * @size: read/write size, sizeof(@buf) must > @size
 309  * @write: true - write to vram, otherwise - read from vram
 310  */
 311 void amdgpu_device_mm_access(struct amdgpu_device *adev, loff_t pos,
 312                              void *buf, size_t size, bool write)
 313 {
 314         unsigned long flags;
 315         uint32_t hi = ~0, tmp = 0;
 316         uint32_t *data = buf;
 317         uint64_t last;
 318         int idx;
 319
 320         if (!drm_dev_enter(adev_to_drm(adev), &idx))
 321                 return;
 322
 323         BUG_ON(!IS_ALIGNED(pos, 4) || !IS_ALIGNED(size, 4));
 324
 325         spin_lock_irqsave(&adev->mmio_idx_lock, flags);
 326         for (last = pos + size; pos < last; pos += 4) {
 327                 tmp = pos >> 31;
 328
 329                 WREG32_NO_KIQ(mmMM_INDEX, ((uint32_t)pos) | 0x80000000);
 330                 if (tmp != hi) {
 331                         WREG32_NO_KIQ(mmMM_INDEX_HI, tmp);
 332                         hi = tmp;
 333                 }
 334                 if (write)
 335                         WREG32_NO_KIQ(mmMM_DATA, *data++);
 336                 else
 337                         *data++ = RREG32_NO_KIQ(mmMM_DATA);
 338         }
 339
 340         spin_unlock_irqrestore(&adev->mmio_idx_lock, flags);
 341         drm_dev_exit(idx);
 342 }
 343
 344 /**
 345  * amdgpu_device_aper_access - access vram by vram aperature
 346  *
 347  * @adev: amdgpu_device pointer
 348  * @pos: offset of the buffer in vram
 349  * @buf: virtual address of the buffer in system memory
 350  * @size: read/write size, sizeof(@buf) must > @size
 351  * @write: true - write to vram, otherwise - read from vram
 352  *
 353  * The return value means how many bytes have been transferred.
 354  */
 355 size_t amdgpu_device_aper_access(struct amdgpu_device *adev, loff_t pos,
 356                                  void *buf, size_t size, bool write)
 357 {
 358 #ifdef CONFIG_64BIT
 359         void __iomem *addr;
 360         size_t count = 0;
 361         uint64_t last;
 362
 363         if (!adev->mman.aper_base_kaddr)
 364                 return 0;
 365
 366         last = min(pos + size, adev->gmc.visible_vram_size);
 367         if (last > pos) {
 368                 addr = adev->mman.aper_base_kaddr + pos;
 369                 count = last - pos;
 370
 371                 if (write) {
 372                         memcpy_toio(addr, buf, count);
 373                         mb();
 374                         amdgpu_device_flush_hdp(adev, NULL);
 375                 } else {
 376                         amdgpu_device_invalidate_hdp(adev, NULL);
 377                         mb();
 378                         memcpy_fromio(buf, addr, count);
 379                 }
 380
 381         }
 382
 383         return count;
 384 #else
 385         return 0;
 386 #endif
 387 }
 388
 389 /**
 390  * amdgpu_device_vram_access - read/write a buffer in vram
 391  *
 392  * @adev: amdgpu_device pointer
 393  * @pos: offset of the buffer in vram
 394  * @buf: virtual address of the buffer in system memory
 395  * @size: read/write size, sizeof(@buf) must > @size
 396  * @write: true - write to vram, otherwise - read from vram
 397  */
 398 void amdgpu_device_vram_access(struct amdgpu_device *adev, loff_t pos,
 399                                void *buf, size_t size, bool write)
 400 {
 401         size_t count;
 402
 403         /* try to using vram apreature to access vram first */
 404         count = amdgpu_device_aper_access(adev, pos, buf, size, write);
 405         size -= count;
 406         if (size) {
 407                 /* using MM to access rest vram */
 408                 pos += count;
 409                 buf += count;
 410                 amdgpu_device_mm_access(adev, pos, buf, size, write);
 411         }
 412 }
 413
 414 /*
 415  * register access helper functions.
 416  */
 417
 418 /* Check if hw access should be skipped because of hotplug or device error */
 419 bool amdgpu_device_skip_hw_access(struct amdgpu_device *adev)
 420 {
 421         if (adev->no_hw_access)
 422                 return true;
 423
 424 #ifdef CONFIG_LOCKDEP
 425         /*
 426          * This is a bit complicated to understand, so worth a comment. What we assert
 427          * here is that the GPU reset is not running on another thread in parallel.
 428          *
 429          * For this we trylock the read side of the reset semaphore, if that succeeds
 430          * we know that the reset is not running in paralell.
 431          *
 432          * If the trylock fails we assert that we are either already holding the read
 433          * side of the lock or are the reset thread itself and hold the write side of
 434          * the lock.
 435          */
 436         if (in_task()) {
 437                 if (down_read_trylock(&adev->reset_domain->sem))
 438                         up_read(&adev->reset_domain->sem);
 439                 else
 440                         lockdep_assert_held(&adev->reset_domain->sem);
 441         }
 442 #endif
 443         return false;
 444 }
 445
 446 /**
 447  * amdgpu_device_rreg - read a memory mapped IO or indirect register
 448  *
 449  * @adev: amdgpu_device pointer
 450  * @reg: dword aligned register offset
 451  * @acc_flags: access flags which require special behavior
 452  *
 453  * Returns the 32 bit value from the offset specified.
 454  */
 455 uint32_t amdgpu_device_rreg(struct amdgpu_device *adev,
 456                             uint32_t reg, uint32_t acc_flags)
 457 {
 458         uint32_t ret;
 459
 460         if (amdgpu_device_skip_hw_access(adev))
 461                 return 0;
 462
 463         if ((reg * 4) < adev->rmmio_size) {
 464                 if (!(acc_flags & AMDGPU_REGS_NO_KIQ) &&
 465                     amdgpu_sriov_runtime(adev) &&
 466                     down_read_trylock(&adev->reset_domain->sem)) {
 467                         ret = amdgpu_kiq_rreg(adev, reg);
 468                         up_read(&adev->reset_domain->sem);
 469                 } else {
 470                         ret = readl(((void __iomem *)adev->rmmio) + (reg * 4));
 471                 }
 472         } else {
 473                 ret = adev->pcie_rreg(adev, reg * 4);
 474         }
 475
 476         trace_amdgpu_device_rreg(adev->pdev->device, reg, ret);
 477
 478         return ret;
 479 }
 480
 481 /*
 482  * MMIO register read with bytes helper functions
 483  * @offset:bytes offset from MMIO start
 484  *
 485 */
 486
 487 /**
 488  * amdgpu_mm_rreg8 - read a memory mapped IO register
 489  *
 490  * @adev: amdgpu_device pointer
 491  * @offset: byte aligned register offset
 492  *
 493  * Returns the 8 bit value from the offset specified.
 494  */
 495 uint8_t amdgpu_mm_rreg8(struct amdgpu_device *adev, uint32_t offset)
 496 {
 497         if (amdgpu_device_skip_hw_access(adev))
 498                 return 0;
 499
 500         if (offset < adev->rmmio_size)
 501                 return (readb(adev->rmmio + offset));
 502         BUG();
 503 }
 504
 505 /*
 506  * MMIO register write with bytes helper functions
 507  * @offset:bytes offset from MMIO start
 508  * @value: the value want to be written to the register
 509  *
 510 */
 511 /**
 512  * amdgpu_mm_wreg8 - read a memory mapped IO register
 513  *
 514  * @adev: amdgpu_device pointer
 515  * @offset: byte aligned register offset
 516  * @value: 8 bit value to write
 517  *
 518  * Writes the value specified to the offset specified.
 519  */
 520 void amdgpu_mm_wreg8(struct amdgpu_device *adev, uint32_t offset, uint8_t value)
 521 {
 522         if (amdgpu_device_skip_hw_access(adev))
 523                 return;
 524
 525         if (offset < adev->rmmio_size)
 526                 writeb(value, adev->rmmio + offset);
 527         else
 528                 BUG();
 529 }
 530
 531 /**
 532  * amdgpu_device_wreg - write to a memory mapped IO or indirect register
 533  *
 534  * @adev: amdgpu_device pointer
 535  * @reg: dword aligned register offset
 536  * @v: 32 bit value to write to the register
 537  * @acc_flags: access flags which require special behavior
 538  *
 539  * Writes the value specified to the offset specified.
 540  */
 541 void amdgpu_device_wreg(struct amdgpu_device *adev,
 542                         uint32_t reg, uint32_t v,
 543                         uint32_t acc_flags)
 544 {
 545         if (amdgpu_device_skip_hw_access(adev))
 546                 return;
 547
 548         if ((reg * 4) < adev->rmmio_size) {
 549                 if (!(acc_flags & AMDGPU_REGS_NO_KIQ) &&
 550                     amdgpu_sriov_runtime(adev) &&
 551                     down_read_trylock(&adev->reset_domain->sem)) {
 552                         amdgpu_kiq_wreg(adev, reg, v);
 553                         up_read(&adev->reset_domain->sem);
 554                 } else {
 555                         writel(v, ((void __iomem *)adev->rmmio) + (reg * 4));
 556                 }
 557         } else {
 558                 adev->pcie_wreg(adev, reg * 4, v);
 559         }
 560
 561         trace_amdgpu_device_wreg(adev->pdev->device, reg, v);
 562 }
 563
 564 /**
 565  * amdgpu_mm_wreg_mmio_rlc -  write register either with direct/indirect mmio or with RLC path if in range
 566  *
 567  * @adev: amdgpu_device pointer
 568  * @reg: mmio/rlc register
 569  * @v: value to write
 570  *
 571  * this function is invoked only for the debugfs register access
 572  */
 573 void amdgpu_mm_wreg_mmio_rlc(struct amdgpu_device *adev,
 574                              uint32_t reg, uint32_t v)
 575 {
 576         if (amdgpu_device_skip_hw_access(adev))
 577                 return;
 578
 579         if (amdgpu_sriov_fullaccess(adev) &&
 580             adev->gfx.rlc.funcs &&
 581             adev->gfx.rlc.funcs->is_rlcg_access_range) {
 582                 if (adev->gfx.rlc.funcs->is_rlcg_access_range(adev, reg))
 583                         return amdgpu_sriov_wreg(adev, reg, v, 0, 0);
 584         } else if ((reg * 4) >= adev->rmmio_size) {
 585                 adev->pcie_wreg(adev, reg * 4, v);
 586         } else {
 587                 writel(v, ((void __iomem *)adev->rmmio) + (reg * 4));
 588         }
 589 }
 590
 591 /**
 592  * amdgpu_mm_rdoorbell - read a doorbell dword
 593  *
 594  * @adev: amdgpu_device pointer
 595  * @index: doorbell index
 596  *
 597  * Returns the value in the doorbell aperture at the
 598  * requested doorbell index (CIK).
 599  */
 600 u32 amdgpu_mm_rdoorbell(struct amdgpu_device *adev, u32 index)
 601 {
 602         if (amdgpu_device_skip_hw_access(adev))
 603                 return 0;
 604
 605         if (index < adev->doorbell.num_kernel_doorbells) {
 606                 return readl(adev->doorbell.ptr + index);
 607         } else {
 608                 DRM_ERROR("reading beyond doorbell aperture: 0x%08x!\n", index);
 609                 return 0;
 610         }
 611 }
 612
 613 /**
 614  * amdgpu_mm_wdoorbell - write a doorbell dword
 615  *
 616  * @adev: amdgpu_device pointer
 617  * @index: doorbell index
 618  * @v: value to write
 619  *
 620  * Writes @v to the doorbell aperture at the
 621  * requested doorbell index (CIK).
 622  */
 623 void amdgpu_mm_wdoorbell(struct amdgpu_device *adev, u32 index, u32 v)
 624 {
 625         if (amdgpu_device_skip_hw_access(adev))
 626                 return;
 627
 628         if (index < adev->doorbell.num_kernel_doorbells) {
 629                 writel(v, adev->doorbell.ptr + index);
 630         } else {
 631                 DRM_ERROR("writing beyond doorbell aperture: 0x%08x!\n", index);
 632         }
 633 }
 634
 635 /**
 636  * amdgpu_mm_rdoorbell64 - read a doorbell Qword
 637  *
 638  * @adev: amdgpu_device pointer
 639  * @index: doorbell index
 640  *
 641  * Returns the value in the doorbell aperture at the
 642  * requested doorbell index (VEGA10+).
 643  */
 644 u64 amdgpu_mm_rdoorbell64(struct amdgpu_device *adev, u32 index)
 645 {
 646         if (amdgpu_device_skip_hw_access(adev))
 647                 return 0;
 648
 649         if (index < adev->doorbell.num_kernel_doorbells) {
 650                 return atomic64_read((atomic64_t *)(adev->doorbell.ptr + index));
 651         } else {
 652                 DRM_ERROR("reading beyond doorbell aperture: 0x%08x!\n", index);
 653                 return 0;
 654         }
 655 }
 656
 657 /**
 658  * amdgpu_mm_wdoorbell64 - write a doorbell Qword
 659  *
 660  * @adev: amdgpu_device pointer
 661  * @index: doorbell index
 662  * @v: value to write
 663  *
 664  * Writes @v to the doorbell aperture at the
 665  * requested doorbell index (VEGA10+).
 666  */
 667 void amdgpu_mm_wdoorbell64(struct amdgpu_device *adev, u32 index, u64 v)
 668 {
 669         if (amdgpu_device_skip_hw_access(adev))
 670                 return;
 671
 672         if (index < adev->doorbell.num_kernel_doorbells) {
 673                 atomic64_set((atomic64_t *)(adev->doorbell.ptr + index), v);
 674         } else {
 675                 DRM_ERROR("writing beyond doorbell aperture: 0x%08x!\n", index);
 676         }
 677 }
 678
 679 /**
 680  * amdgpu_device_indirect_rreg - read an indirect register
 681  *
 682  * @adev: amdgpu_device pointer
 683  * @reg_addr: indirect register address to read from
 684  *
 685  * Returns the value of indirect register @reg_addr
 686  */
 687 u32 amdgpu_device_indirect_rreg(struct amdgpu_device *adev,
 688                                 u32 reg_addr)
 689 {
 690         unsigned long flags, pcie_index, pcie_data;
 691         void __iomem *pcie_index_offset;
 692         void __iomem *pcie_data_offset;
 693         u32 r;
 694
 695         pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev);
 696         pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev);
 697
 698         spin_lock_irqsave(&adev->pcie_idx_lock, flags);
 699         pcie_index_offset = (void __iomem *)adev->rmmio + pcie_index * 4;
 700         pcie_data_offset = (void __iomem *)adev->rmmio + pcie_data * 4;
 701
 702         writel(reg_addr, pcie_index_offset);
 703         readl(pcie_index_offset);
 704         r = readl(pcie_data_offset);
 705         spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
 706
 707         return r;
 708 }
 709
 710 /**
 711  * amdgpu_device_indirect_rreg64 - read a 64bits indirect register
 712  *
 713  * @adev: amdgpu_device pointer
 714  * @reg_addr: indirect register address to read from
 715  *
 716  * Returns the value of indirect register @reg_addr
 717  */
 718 u64 amdgpu_device_indirect_rreg64(struct amdgpu_device *adev,
 719                                   u32 reg_addr)
 720 {
 721         unsigned long flags, pcie_index, pcie_data;
 722         void __iomem *pcie_index_offset;
 723         void __iomem *pcie_data_offset;
 724         u64 r;
 725
 726         pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev);
 727         pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev);
 728
 729         spin_lock_irqsave(&adev->pcie_idx_lock, flags);
 730         pcie_index_offset = (void __iomem *)adev->rmmio + pcie_index * 4;
 731         pcie_data_offset = (void __iomem *)adev->rmmio + pcie_data * 4;
 732
 733         /* read low 32 bits */
 734         writel(reg_addr, pcie_index_offset);
 735         readl(pcie_index_offset);
 736         r = readl(pcie_data_offset);
 737         /* read high 32 bits */
 738         writel(reg_addr + 4, pcie_index_offset);
 739         readl(pcie_index_offset);
 740         r |= ((u64)readl(pcie_data_offset) << 32);
 741         spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
 742
 743         return r;
 744 }
 745
 746 /**
 747  * amdgpu_device_indirect_wreg - write an indirect register address
 748  *
 749  * @adev: amdgpu_device pointer
 750  * @pcie_index: mmio register offset
 751  * @pcie_data: mmio register offset
 752  * @reg_addr: indirect register offset
 753  * @reg_data: indirect register data
 754  *
 755  */
 756 void amdgpu_device_indirect_wreg(struct amdgpu_device *adev,
 757                                  u32 reg_addr, u32 reg_data)
 758 {
 759         unsigned long flags, pcie_index, pcie_data;
 760         void __iomem *pcie_index_offset;
 761         void __iomem *pcie_data_offset;
 762
 763         pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev);
 764         pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev);
 765
 766         spin_lock_irqsave(&adev->pcie_idx_lock, flags);
 767         pcie_index_offset = (void __iomem *)adev->rmmio + pcie_index * 4;
 768         pcie_data_offset = (void __iomem *)adev->rmmio + pcie_data * 4;
 769
 770         writel(reg_addr, pcie_index_offset);
 771         readl(pcie_index_offset);
 772         writel(reg_data, pcie_data_offset);
 773         readl(pcie_data_offset);
 774         spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
 775 }
 776
 777 /**
 778  * amdgpu_device_indirect_wreg64 - write a 64bits indirect register address
 779  *
 780  * @adev: amdgpu_device pointer
 781  * @pcie_index: mmio register offset
 782  * @pcie_data: mmio register offset
 783  * @reg_addr: indirect register offset
 784  * @reg_data: indirect register data
 785  *
 786  */
 787 void amdgpu_device_indirect_wreg64(struct amdgpu_device *adev,
 788                                    u32 reg_addr, u64 reg_data)
 789 {
 790         unsigned long flags, pcie_index, pcie_data;
 791         void __iomem *pcie_index_offset;
 792         void __iomem *pcie_data_offset;
 793
 794         pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev);
 795         pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev);
 796
 797         spin_lock_irqsave(&adev->pcie_idx_lock, flags);
 798         pcie_index_offset = (void __iomem *)adev->rmmio + pcie_index * 4;
 799         pcie_data_offset = (void __iomem *)adev->rmmio + pcie_data * 4;
 800
 801         /* write low 32 bits */
 802         writel(reg_addr, pcie_index_offset);
 803         readl(pcie_index_offset);
 804         writel((u32)(reg_data & 0xffffffffULL), pcie_data_offset);
 805         readl(pcie_data_offset);
 806         /* write high 32 bits */
 807         writel(reg_addr + 4, pcie_index_offset);
 808         readl(pcie_index_offset);
 809         writel((u32)(reg_data >> 32), pcie_data_offset);
 810         readl(pcie_data_offset);
 811         spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
 812 }
 813
 814 /**
 815  * amdgpu_device_get_rev_id - query device rev_id
 816  *
 817  * @adev: amdgpu_device pointer
 818  *
 819  * Return device rev_id
 820  */
 821 u32 amdgpu_device_get_rev_id(struct amdgpu_device *adev)
 822 {
 823         return adev->nbio.funcs->get_rev_id(adev);
 824 }
 825
 826 /**
 827  * amdgpu_invalid_rreg - dummy reg read function
 828  *
 829  * @adev: amdgpu_device pointer
 830  * @reg: offset of register
 831  *
 832  * Dummy register read function.  Used for register blocks
 833  * that certain asics don't have (all asics).
 834  * Returns the value in the register.
 835  */
 836 static uint32_t amdgpu_invalid_rreg(struct amdgpu_device *adev, uint32_t reg)
 837 {
 838         DRM_ERROR("Invalid callback to read register 0x%04X\n", reg);
 839         BUG();
 840         return 0;
 841 }
 842
 843 /**
 844  * amdgpu_invalid_wreg - dummy reg write function
 845  *
 846  * @adev: amdgpu_device pointer
 847  * @reg: offset of register
 848  * @v: value to write to the register
 849  *
 850  * Dummy register read function.  Used for register blocks
 851  * that certain asics don't have (all asics).
 852  */
 853 static void amdgpu_invalid_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v)
 854 {
 855         DRM_ERROR("Invalid callback to write register 0x%04X with 0x%08X\n",
 856                   reg, v);
 857         BUG();
 858 }
 859
 860 /**
 861  * amdgpu_invalid_rreg64 - dummy 64 bit reg read function
 862  *
 863  * @adev: amdgpu_device pointer
 864  * @reg: offset of register
 865  *
 866  * Dummy register read function.  Used for register blocks
 867  * that certain asics don't have (all asics).
 868  * Returns the value in the register.
 869  */
 870 static uint64_t amdgpu_invalid_rreg64(struct amdgpu_device *adev, uint32_t reg)
 871 {
 872         DRM_ERROR("Invalid callback to read 64 bit register 0x%04X\n", reg);
 873         BUG();
 874         return 0;
 875 }
 876
 877 /**
 878  * amdgpu_invalid_wreg64 - dummy reg write function
 879  *
 880  * @adev: amdgpu_device pointer
 881  * @reg: offset of register
 882  * @v: value to write to the register
 883  *
 884  * Dummy register read function.  Used for register blocks
 885  * that certain asics don't have (all asics).
 886  */
 887 static void amdgpu_invalid_wreg64(struct amdgpu_device *adev, uint32_t reg, uint64_t v)
 888 {
 889         DRM_ERROR("Invalid callback to write 64 bit register 0x%04X with 0x%08llX\n",
 890                   reg, v);
 891         BUG();
 892 }
 893
 894 /**
 895  * amdgpu_block_invalid_rreg - dummy reg read function
 896  *
 897  * @adev: amdgpu_device pointer
 898  * @block: offset of instance
 899  * @reg: offset of register
 900  *
 901  * Dummy register read function.  Used for register blocks
 902  * that certain asics don't have (all asics).
 903  * Returns the value in the register.
 904  */
 905 static uint32_t amdgpu_block_invalid_rreg(struct amdgpu_device *adev,
 906                                           uint32_t block, uint32_t reg)
 907 {
 908         DRM_ERROR("Invalid callback to read register 0x%04X in block 0x%04X\n",
 909                   reg, block);
 910         BUG();
 911         return 0;
 912 }
 913
 914 /**
 915  * amdgpu_block_invalid_wreg - dummy reg write function
 916  *
 917  * @adev: amdgpu_device pointer
 918  * @block: offset of instance
 919  * @reg: offset of register
 920  * @v: value to write to the register
 921  *
 922  * Dummy register read function.  Used for register blocks
 923  * that certain asics don't have (all asics).
 924  */
 925 static void amdgpu_block_invalid_wreg(struct amdgpu_device *adev,
 926                                       uint32_t block,
 927                                       uint32_t reg, uint32_t v)
 928 {
 929         DRM_ERROR("Invalid block callback to write register 0x%04X in block 0x%04X with 0x%08X\n",
 930                   reg, block, v);
 931         BUG();
 932 }
 933
 934 /**
 935  * amdgpu_device_asic_init - Wrapper for atom asic_init
 936  *
 937  * @adev: amdgpu_device pointer
 938  *
 939  * Does any asic specific work and then calls atom asic init.
 940  */
 941 static int amdgpu_device_asic_init(struct amdgpu_device *adev)
 942 {
 943         amdgpu_asic_pre_asic_init(adev);
 944
 945         if (adev->ip_versions[GC_HWIP][0] >= IP_VERSION(11, 0, 0))
 946                 return amdgpu_atomfirmware_asic_init(adev, true);
 947         else
 948                 return amdgpu_atom_asic_init(adev->mode_info.atom_context);
 949 }
 950
 951 /**
 952  * amdgpu_device_mem_scratch_init - allocate the VRAM scratch page
 953  *
 954  * @adev: amdgpu_device pointer
 955  *
 956  * Allocates a scratch page of VRAM for use by various things in the
 957  * driver.
 958  */
 959 static int amdgpu_device_mem_scratch_init(struct amdgpu_device *adev)
 960 {
 961         return amdgpu_bo_create_kernel(adev, AMDGPU_GPU_PAGE_SIZE, PAGE_SIZE,
 962                                        AMDGPU_GEM_DOMAIN_VRAM |
 963                                        AMDGPU_GEM_DOMAIN_GTT,
 964                                        &adev->mem_scratch.robj,
 965                                        &adev->mem_scratch.gpu_addr,
 966                                        (void **)&adev->mem_scratch.ptr);
 967 }
 968
 969 /**
 970  * amdgpu_device_mem_scratch_fini - Free the VRAM scratch page
 971  *
 972  * @adev: amdgpu_device pointer
 973  *
 974  * Frees the VRAM scratch page.
 975  */
 976 static void amdgpu_device_mem_scratch_fini(struct amdgpu_device *adev)
 977 {
 978         amdgpu_bo_free_kernel(&adev->mem_scratch.robj, NULL, NULL);
 979 }
 980
 981 /**
 982  * amdgpu_device_program_register_sequence - program an array of registers.
 983  *
 984  * @adev: amdgpu_device pointer
 985  * @registers: pointer to the register array
 986  * @array_size: size of the register array
 987  *
 988  * Programs an array or registers with and and or masks.
 989  * This is a helper for setting golden registers.
 990  */
 991 void amdgpu_device_program_register_sequence(struct amdgpu_device *adev,
 992                                              const u32 *registers,
 993                                              const u32 array_size)
 994 {
 995         u32 tmp, reg, and_mask, or_mask;
 996         int i;
 997
 998         if (array_size % 3)
 999                 return;
1000
1001         for (i = 0; i < array_size; i +=3) {
1002                 reg = registers[i + 0];
1003                 and_mask = registers[i + 1];
1004                 or_mask = registers[i + 2];
1005
1006                 if (and_mask == 0xffffffff) {
1007                         tmp = or_mask;
1008                 } else {
1009                         tmp = RREG32(reg);
1010                         tmp &= ~and_mask;
1011                         if (adev->family >= AMDGPU_FAMILY_AI)
1012                                 tmp |= (or_mask & and_mask);
1013                         else
1014                                 tmp |= or_mask;
1015                 }
1016                 WREG32(reg, tmp);
1017         }
1018 }
1019
1020 /**
1021  * amdgpu_device_pci_config_reset - reset the GPU
1022  *
1023  * @adev: amdgpu_device pointer
1024  *
1025  * Resets the GPU using the pci config reset sequence.
1026  * Only applicable to asics prior to vega10.
1027  */
1028 void amdgpu_device_pci_config_reset(struct amdgpu_device *adev)
1029 {
1030         pci_write_config_dword(adev->pdev, 0x7c, AMDGPU_ASIC_RESET_DATA);
1031 }
1032
1033 /**
1034  * amdgpu_device_pci_reset - reset the GPU using generic PCI means
1035  *
1036  * @adev: amdgpu_device pointer
1037  *
1038  * Resets the GPU using generic pci reset interfaces (FLR, SBR, etc.).
1039  */
1040 int amdgpu_device_pci_reset(struct amdgpu_device *adev)
1041 {
1042         return pci_reset_function(adev->pdev);
1043 }
1044
1045 /*
1046  * GPU doorbell aperture helpers function.
1047  */
1048 /**
1049  * amdgpu_device_doorbell_init - Init doorbell driver information.
1050  *
1051  * @adev: amdgpu_device pointer
1052  *
1053  * Init doorbell driver information (CIK)
1054  * Returns 0 on success, error on failure.
1055  */
1056 static int amdgpu_device_doorbell_init(struct amdgpu_device *adev)
1057 {
1058
1059         /* No doorbell on SI hardware generation */
1060         if (adev->asic_type < CHIP_BONAIRE) {
1061                 adev->doorbell.base = 0;
1062                 adev->doorbell.size = 0;
1063                 adev->doorbell.num_kernel_doorbells = 0;
1064                 adev->doorbell.ptr = NULL;
1065                 return 0;
1066         }
1067
1068         if (pci_resource_flags(adev->pdev, 2) & IORESOURCE_UNSET)
1069                 return -EINVAL;
1070
1071         amdgpu_asic_init_doorbell_index(adev);
1072
1073         /* doorbell bar mapping */
1074         adev->doorbell.base = pci_resource_start(adev->pdev, 2);
1075         adev->doorbell.size = pci_resource_len(adev->pdev, 2);
1076
1077         if (adev->enable_mes) {
1078                 adev->doorbell.num_kernel_doorbells =
1079                         adev->doorbell.size / sizeof(u32);
1080         } else {
1081                 adev->doorbell.num_kernel_doorbells =
1082                         min_t(u32, adev->doorbell.size / sizeof(u32),
1083                               adev->doorbell_index.max_assignment+1);
1084                 if (adev->doorbell.num_kernel_doorbells == 0)
1085                         return -EINVAL;
1086
1087                 /* For Vega, reserve and map two pages on doorbell BAR since SDMA
1088                  * paging queue doorbell use the second page. The
1089                  * AMDGPU_DOORBELL64_MAX_ASSIGNMENT definition assumes all the
1090                  * doorbells are in the first page. So with paging queue enabled,
1091                  * the max num_kernel_doorbells should + 1 page (0x400 in dword)
1092                  */
1093                 if (adev->asic_type >= CHIP_VEGA10)
1094                         adev->doorbell.num_kernel_doorbells += 0x400;
1095         }
1096
1097         adev->doorbell.ptr = ioremap(adev->doorbell.base,
1098                                      adev->doorbell.num_kernel_doorbells *
1099                                      sizeof(u32));
1100         if (adev->doorbell.ptr == NULL)
1101                 return -ENOMEM;
1102
1103         return 0;
1104 }
1105
1106 /**
1107  * amdgpu_device_doorbell_fini - Tear down doorbell driver information.
1108  *
1109  * @adev: amdgpu_device pointer
1110  *
1111  * Tear down doorbell driver information (CIK)
1112  */
1113 static void amdgpu_device_doorbell_fini(struct amdgpu_device *adev)
1114 {
1115         iounmap(adev->doorbell.ptr);
1116         adev->doorbell.ptr = NULL;
1117 }
1118
1119
1120
1121 /*
1122  * amdgpu_device_wb_*()
1123  * Writeback is the method by which the GPU updates special pages in memory
1124  * with the status of certain GPU events (fences, ring pointers,etc.).
1125  */
1126
1127 /**
1128  * amdgpu_device_wb_fini - Disable Writeback and free memory
1129  *
1130  * @adev: amdgpu_device pointer
1131  *
1132  * Disables Writeback and frees the Writeback memory (all asics).
1133  * Used at driver shutdown.
1134  */
1135 static void amdgpu_device_wb_fini(struct amdgpu_device *adev)
1136 {
1137         if (adev->wb.wb_obj) {
1138                 amdgpu_bo_free_kernel(&adev->wb.wb_obj,
1139                                       &adev->wb.gpu_addr,
1140                                       (void **)&adev->wb.wb);
1141                 adev->wb.wb_obj = NULL;
1142         }
1143 }
1144
1145 /**
1146  * amdgpu_device_wb_init - Init Writeback driver info and allocate memory
1147  *
1148  * @adev: amdgpu_device pointer
1149  *
1150  * Initializes writeback and allocates writeback memory (all asics).
1151  * Used at driver startup.
1152  * Returns 0 on success or an -error on failure.
1153  */
1154 static int amdgpu_device_wb_init(struct amdgpu_device *adev)
1155 {
1156         int r;
1157
1158         if (adev->wb.wb_obj == NULL) {
1159                 /* AMDGPU_MAX_WB * sizeof(uint32_t) * 8 = AMDGPU_MAX_WB 256bit slots */
1160                 r = amdgpu_bo_create_kernel(adev, AMDGPU_MAX_WB * sizeof(uint32_t) * 8,
1161                                             PAGE_SIZE, AMDGPU_GEM_DOMAIN_GTT,
1162                                             &adev->wb.wb_obj, &adev->wb.gpu_addr,
1163                                             (void **)&adev->wb.wb);
1164                 if (r) {
1165                         dev_warn(adev->dev, "(%d) create WB bo failed\n", r);
1166                         return r;
1167                 }
1168
1169                 adev->wb.num_wb = AMDGPU_MAX_WB;
1170                 memset(&adev->wb.used, 0, sizeof(adev->wb.used));
1171
1172                 /* clear wb memory */
1173                 memset((char *)adev->wb.wb, 0, AMDGPU_MAX_WB * sizeof(uint32_t) * 8);
1174         }
1175
1176         return 0;
1177 }
1178
1179 /**
1180  * amdgpu_device_wb_get - Allocate a wb entry
1181  *
1182  * @adev: amdgpu_device pointer
1183  * @wb: wb index
1184  *
1185  * Allocate a wb slot for use by the driver (all asics).
1186  * Returns 0 on success or -EINVAL on failure.
1187  */
1188 int amdgpu_device_wb_get(struct amdgpu_device *adev, u32 *wb)
1189 {
1190         unsigned long offset = find_first_zero_bit(adev->wb.used, adev->wb.num_wb);
1191
1192         if (offset < adev->wb.num_wb) {
1193                 __set_bit(offset, adev->wb.used);
1194                 *wb = offset << 3; /* convert to dw offset */
1195                 return 0;
1196         } else {
1197                 return -EINVAL;
1198         }
1199 }
1200
1201 /**
1202  * amdgpu_device_wb_free - Free a wb entry
1203  *
1204  * @adev: amdgpu_device pointer
1205  * @wb: wb index
1206  *
1207  * Free a wb slot allocated for use by the driver (all asics)
1208  */
1209 void amdgpu_device_wb_free(struct amdgpu_device *adev, u32 wb)
1210 {
1211         wb >>= 3;
1212         if (wb < adev->wb.num_wb)
1213                 __clear_bit(wb, adev->wb.used);
1214 }
1215
1216 /**
1217  * amdgpu_device_resize_fb_bar - try to resize FB BAR
1218  *
1219  * @adev: amdgpu_device pointer
1220  *
1221  * Try to resize FB BAR to make all VRAM CPU accessible. We try very hard not
1222  * to fail, but if any of the BARs is not accessible after the size we abort
1223  * driver loading by returning -ENODEV.
1224  */
1225 int amdgpu_device_resize_fb_bar(struct amdgpu_device *adev)
1226 {
1227         int rbar_size = pci_rebar_bytes_to_size(adev->gmc.real_vram_size);
1228         struct pci_bus *root;
1229         struct resource *res;
1230         unsigned i;
1231         u16 cmd;
1232         int r;
1233
1234         /* Bypass for VF */
1235         if (amdgpu_sriov_vf(adev))
1236                 return 0;
1237
1238         /* skip if the bios has already enabled large BAR */
1239         if (adev->gmc.real_vram_size &&
1240             (pci_resource_len(adev->pdev, 0) >= adev->gmc.real_vram_size))
1241                 return 0;
1242
1243         /* Check if the root BUS has 64bit memory resources */
1244         root = adev->pdev->bus;
1245         while (root->parent)
1246                 root = root->parent;
1247
1248         pci_bus_for_each_resource(root, res, i) {
1249                 if (res && res->flags & (IORESOURCE_MEM | IORESOURCE_MEM_64) &&
1250                     res->start > 0x100000000ull)
1251                         break;
1252         }
1253
1254         /* Trying to resize is pointless without a root hub window above 4GB */
1255         if (!res)
1256                 return 0;
1257
1258         /* Limit the BAR size to what is available */
1259         rbar_size = min(fls(pci_rebar_get_possible_sizes(adev->pdev, 0)) - 1,
1260                         rbar_size);
1261
1262         /* Disable memory decoding while we change the BAR addresses and size */
1263         pci_read_config_word(adev->pdev, PCI_COMMAND, &cmd);
1264         pci_write_config_word(adev->pdev, PCI_COMMAND,
1265                               cmd & ~PCI_COMMAND_MEMORY);
1266
1267         /* Free the VRAM and doorbell BAR, we most likely need to move both. */
1268         amdgpu_device_doorbell_fini(adev);
1269         if (adev->asic_type >= CHIP_BONAIRE)
1270                 pci_release_resource(adev->pdev, 2);
1271
1272         pci_release_resource(adev->pdev, 0);
1273
1274         r = pci_resize_resource(adev->pdev, 0, rbar_size);
1275         if (r == -ENOSPC)
1276                 DRM_INFO("Not enough PCI address space for a large BAR.");
1277         else if (r && r != -ENOTSUPP)
1278                 DRM_ERROR("Problem resizing BAR0 (%d).", r);
1279
1280         pci_assign_unassigned_bus_resources(adev->pdev->bus);
1281
1282         /* When the doorbell or fb BAR isn't available we have no chance of
1283          * using the device.
1284          */
1285         r = amdgpu_device_doorbell_init(adev);
1286         if (r || (pci_resource_flags(adev->pdev, 0) & IORESOURCE_UNSET))
1287                 return -ENODEV;
1288
1289         pci_write_config_word(adev->pdev, PCI_COMMAND, cmd);
1290
1291         return 0;
1292 }
1293
1294 /*
1295  * GPU helpers function.
1296  */
1297 /**
1298  * amdgpu_device_need_post - check if the hw need post or not
1299  *
1300  * @adev: amdgpu_device pointer
1301  *
1302  * Check if the asic has been initialized (all asics) at driver startup
1303  * or post is needed if  hw reset is performed.
1304  * Returns true if need or false if not.
1305  */
1306 bool amdgpu_device_need_post(struct amdgpu_device *adev)
1307 {
1308         uint32_t reg;
1309
1310         if (amdgpu_sriov_vf(adev))
1311                 return false;
1312
1313         if (amdgpu_passthrough(adev)) {
1314                 /* for FIJI: In whole GPU pass-through virtualization case, after VM reboot
1315                  * some old smc fw still need driver do vPost otherwise gpu hang, while
1316                  * those smc fw version above 22.15 doesn't have this flaw, so we force
1317                  * vpost executed for smc version below 22.15
1318                  */
1319                 if (adev->asic_type == CHIP_FIJI) {
1320                         int err;
1321                         uint32_t fw_ver;
1322                         err = request_firmware(&adev->pm.fw, "amdgpu/fiji_smc.bin", adev->dev);
1323                         /* force vPost if error occured */
1324                         if (err)
1325                                 return true;
1326
1327                         fw_ver = *((uint32_t *)adev->pm.fw->data + 69);
1328                         if (fw_ver < 0x00160e00)
1329                                 return true;
1330                 }
1331         }
1332
1333         /* Don't post if we need to reset whole hive on init */
1334         if (adev->gmc.xgmi.pending_reset)
1335                 return false;
1336
1337         if (adev->has_hw_reset) {
1338                 adev->has_hw_reset = false;
1339                 return true;
1340         }
1341
1342         /* bios scratch used on CIK+ */
1343         if (adev->asic_type >= CHIP_BONAIRE)
1344                 return amdgpu_atombios_scratch_need_asic_init(adev);
1345
1346         /* check MEM_SIZE for older asics */
1347         reg = amdgpu_asic_get_config_memsize(adev);
1348
1349         if ((reg != 0) && (reg != 0xffffffff))
1350                 return false;
1351
1352         return true;
1353 }
1354
1355 /**
1356  * amdgpu_device_should_use_aspm - check if the device should program ASPM
1357  *
1358  * @adev: amdgpu_device pointer
1359  *
1360  * Confirm whether the module parameter and pcie bridge agree that ASPM should
1361  * be set for this device.
1362  *
1363  * Returns true if it should be used or false if not.
1364  */
1365 bool amdgpu_device_should_use_aspm(struct amdgpu_device *adev)
1366 {
1367         switch (amdgpu_aspm) {
1368         case -1:
1369                 break;
1370         case 0:
1371                 return false;
1372         case 1:
1373                 return true;
1374         default:
1375                 return false;
1376         }
1377         return pcie_aspm_enabled(adev->pdev);
1378 }
1379
1380 bool amdgpu_device_aspm_support_quirk(void)
1381 {
1382 #if IS_ENABLED(CONFIG_X86)
1383         struct cpuinfo_x86 *c = &cpu_data(0);
1384
1385         return !(c->x86 == 6 && c->x86_model == INTEL_FAM6_ALDERLAKE);
1386 #else
1387         return true;
1388 #endif
1389 }
1390
1391 /* if we get transitioned to only one device, take VGA back */
1392 /**
1393  * amdgpu_device_vga_set_decode - enable/disable vga decode
1394  *
1395  * @pdev: PCI device pointer
1396  * @state: enable/disable vga decode
1397  *
1398  * Enable/disable vga decode (all asics).
1399  * Returns VGA resource flags.
1400  */
1401 static unsigned int amdgpu_device_vga_set_decode(struct pci_dev *pdev,
1402                 bool state)
1403 {
1404         struct amdgpu_device *adev = drm_to_adev(pci_get_drvdata(pdev));
1405         amdgpu_asic_set_vga_state(adev, state);
1406         if (state)
1407                 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
1408                        VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
1409         else
1410                 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
1411 }
1412
1413 /**
1414  * amdgpu_device_check_block_size - validate the vm block size
1415  *
1416  * @adev: amdgpu_device pointer
1417  *
1418  * Validates the vm block size specified via module parameter.
1419  * The vm block size defines number of bits in page table versus page directory,
1420  * a page is 4KB so we have 12 bits offset, minimum 9 bits in the
1421  * page table and the remaining bits are in the page directory.
1422  */
1423 static void amdgpu_device_check_block_size(struct amdgpu_device *adev)
1424 {
1425         /* defines number of bits in page table versus page directory,
1426          * a page is 4KB so we have 12 bits offset, minimum 9 bits in the
1427          * page table and the remaining bits are in the page directory */
1428         if (amdgpu_vm_block_size == -1)
1429                 return;
1430
1431         if (amdgpu_vm_block_size < 9) {
1432                 dev_warn(adev->dev, "VM page table size (%d) too small\n",
1433                          amdgpu_vm_block_size);
1434                 amdgpu_vm_block_size = -1;
1435         }
1436 }
1437
1438 /**
1439  * amdgpu_device_check_vm_size - validate the vm size
1440  *
1441  * @adev: amdgpu_device pointer
1442  *
1443  * Validates the vm size in GB specified via module parameter.
1444  * The VM size is the size of the GPU virtual memory space in GB.
1445  */
1446 static void amdgpu_device_check_vm_size(struct amdgpu_device *adev)
1447 {
1448         /* no need to check the default value */
1449         if (amdgpu_vm_size == -1)
1450                 return;
1451
1452         if (amdgpu_vm_size < 1) {
1453                 dev_warn(adev->dev, "VM size (%d) too small, min is 1GB\n",
1454                          amdgpu_vm_size);
1455                 amdgpu_vm_size = -1;
1456         }
1457 }
1458
1459 static void amdgpu_device_check_smu_prv_buffer_size(struct amdgpu_device *adev)
1460 {
1461         struct sysinfo si;
1462         bool is_os_64 = (sizeof(void *) == 8);
1463         uint64_t total_memory;
1464         uint64_t dram_size_seven_GB = 0x1B8000000;
1465         uint64_t dram_size_three_GB = 0xB8000000;
1466
1467         if (amdgpu_smu_memory_pool_size == 0)
1468                 return;
1469
1470         if (!is_os_64) {
1471                 DRM_WARN("Not 64-bit OS, feature not supported\n");
1472                 goto def_value;
1473         }
1474         si_meminfo(&si);
1475         total_memory = (uint64_t)si.totalram * si.mem_unit;
1476
1477         if ((amdgpu_smu_memory_pool_size == 1) ||
1478                 (amdgpu_smu_memory_pool_size == 2)) {
1479                 if (total_memory < dram_size_three_GB)
1480                         goto def_value1;
1481         } else if ((amdgpu_smu_memory_pool_size == 4) ||
1482                 (amdgpu_smu_memory_pool_size == 8)) {
1483                 if (total_memory < dram_size_seven_GB)
1484                         goto def_value1;
1485         } else {
1486                 DRM_WARN("Smu memory pool size not supported\n");
1487                 goto def_value;
1488         }
1489         adev->pm.smu_prv_buffer_size = amdgpu_smu_memory_pool_size << 28;
1490
1491         return;
1492
1493 def_value1:
1494         DRM_WARN("No enough system memory\n");
1495 def_value:
1496         adev->pm.smu_prv_buffer_size = 0;
1497 }
1498
1499 static int amdgpu_device_init_apu_flags(struct amdgpu_device *adev)
1500 {
1501         if (!(adev->flags & AMD_IS_APU) ||
1502             adev->asic_type < CHIP_RAVEN)
1503                 return 0;
1504
1505         switch (adev->asic_type) {
1506         case CHIP_RAVEN:
1507                 if (adev->pdev->device == 0x15dd)
1508                         adev->apu_flags |= AMD_APU_IS_RAVEN;
1509                 if (adev->pdev->device == 0x15d8)
1510                         adev->apu_flags |= AMD_APU_IS_PICASSO;
1511                 break;
1512         case CHIP_RENOIR:
1513                 if ((adev->pdev->device == 0x1636) ||
1514                     (adev->pdev->device == 0x164c))
1515                         adev->apu_flags |= AMD_APU_IS_RENOIR;
1516                 else
1517                         adev->apu_flags |= AMD_APU_IS_GREEN_SARDINE;
1518                 break;
1519         case CHIP_VANGOGH:
1520                 adev->apu_flags |= AMD_APU_IS_VANGOGH;
1521                 break;
1522         case CHIP_YELLOW_CARP:
1523                 break;
1524         case CHIP_CYAN_SKILLFISH:
1525                 if ((adev->pdev->device == 0x13FE) ||
1526                     (adev->pdev->device == 0x143F))
1527                         adev->apu_flags |= AMD_APU_IS_CYAN_SKILLFISH2;
1528                 break;
1529         default:
1530                 break;
1531         }
1532
1533         return 0;
1534 }
1535
1536 /**
1537  * amdgpu_device_check_arguments - validate module params
1538  *
1539  * @adev: amdgpu_device pointer
1540  *
1541  * Validates certain module parameters and updates
1542  * the associated values used by the driver (all asics).
1543  */
1544 static int amdgpu_device_check_arguments(struct amdgpu_device *adev)
1545 {
1546         if (amdgpu_sched_jobs < 4) {
1547                 dev_warn(adev->dev, "sched jobs (%d) must be at least 4\n",
1548                          amdgpu_sched_jobs);
1549                 amdgpu_sched_jobs = 4;
1550         } else if (!is_power_of_2(amdgpu_sched_jobs)){
1551                 dev_warn(adev->dev, "sched jobs (%d) must be a power of 2\n",
1552                          amdgpu_sched_jobs);
1553                 amdgpu_sched_jobs = roundup_pow_of_two(amdgpu_sched_jobs);
1554         }
1555
1556         if (amdgpu_gart_size != -1 && amdgpu_gart_size < 32) {
1557                 /* gart size must be greater or equal to 32M */
1558                 dev_warn(adev->dev, "gart size (%d) too small\n",
1559                          amdgpu_gart_size);
1560                 amdgpu_gart_size = -1;
1561         }
1562
1563         if (amdgpu_gtt_size != -1 && amdgpu_gtt_size < 32) {
1564                 /* gtt size must be greater or equal to 32M */
1565                 dev_warn(adev->dev, "gtt size (%d) too small\n",
1566                                  amdgpu_gtt_size);
1567                 amdgpu_gtt_size = -1;
1568         }
1569
1570         /* valid range is between 4 and 9 inclusive */
1571         if (amdgpu_vm_fragment_size != -1 &&
1572             (amdgpu_vm_fragment_size > 9 || amdgpu_vm_fragment_size < 4)) {
1573                 dev_warn(adev->dev, "valid range is between 4 and 9\n");
1574                 amdgpu_vm_fragment_size = -1;
1575         }
1576
1577         if (amdgpu_sched_hw_submission < 2) {
1578                 dev_warn(adev->dev, "sched hw submission jobs (%d) must be at least 2\n",
1579                          amdgpu_sched_hw_submission);
1580                 amdgpu_sched_hw_submission = 2;
1581         } else if (!is_power_of_2(amdgpu_sched_hw_submission)) {
1582                 dev_warn(adev->dev, "sched hw submission jobs (%d) must be a power of 2\n",
1583                          amdgpu_sched_hw_submission);
1584                 amdgpu_sched_hw_submission = roundup_pow_of_two(amdgpu_sched_hw_submission);
1585         }
1586
1587         if (amdgpu_reset_method < -1 || amdgpu_reset_method > 4) {
1588                 dev_warn(adev->dev, "invalid option for reset method, reverting to default\n");
1589                 amdgpu_reset_method = -1;
1590         }
1591
1592         amdgpu_device_check_smu_prv_buffer_size(adev);
1593
1594         amdgpu_device_check_vm_size(adev);
1595
1596         amdgpu_device_check_block_size(adev);
1597
1598         adev->firmware.load_type = amdgpu_ucode_get_load_type(adev, amdgpu_fw_load_type);
1599
1600         return 0;
1601 }
1602
1603 /**
1604  * amdgpu_switcheroo_set_state - set switcheroo state
1605  *
1606  * @pdev: pci dev pointer
1607  * @state: vga_switcheroo state
1608  *
1609  * Callback for the switcheroo driver.  Suspends or resumes
1610  * the asics before or after it is powered up using ACPI methods.
1611  */
1612 static void amdgpu_switcheroo_set_state(struct pci_dev *pdev,
1613                                         enum vga_switcheroo_state state)
1614 {
1615         struct drm_device *dev = pci_get_drvdata(pdev);
1616         int r;
1617
1618         if (amdgpu_device_supports_px(dev) && state == VGA_SWITCHEROO_OFF)
1619                 return;
1620
1621         if (state == VGA_SWITCHEROO_ON) {
1622                 pr_info("switched on\n");
1623                 /* don't suspend or resume card normally */
1624                 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
1625
1626                 pci_set_power_state(pdev, PCI_D0);
1627                 amdgpu_device_load_pci_state(pdev);
1628                 r = pci_enable_device(pdev);
1629                 if (r)
1630                         DRM_WARN("pci_enable_device failed (%d)\n", r);
1631                 amdgpu_device_resume(dev, true);
1632
1633                 dev->switch_power_state = DRM_SWITCH_POWER_ON;
1634         } else {
1635                 pr_info("switched off\n");
1636                 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
1637                 amdgpu_device_suspend(dev, true);
1638                 amdgpu_device_cache_pci_state(pdev);
1639                 /* Shut down the device */
1640                 pci_disable_device(pdev);
1641                 pci_set_power_state(pdev, PCI_D3cold);
1642                 dev->switch_power_state = DRM_SWITCH_POWER_OFF;
1643         }
1644 }
1645
1646 /**
1647  * amdgpu_switcheroo_can_switch - see if switcheroo state can change
1648  *
1649  * @pdev: pci dev pointer
1650  *
1651  * Callback for the switcheroo driver.  Check of the switcheroo
1652  * state can be changed.
1653  * Returns true if the state can be changed, false if not.
1654  */
1655 static bool amdgpu_switcheroo_can_switch(struct pci_dev *pdev)
1656 {
1657         struct drm_device *dev = pci_get_drvdata(pdev);
1658
1659         /*
1660         * FIXME: open_count is protected by drm_global_mutex but that would lead to
1661         * locking inversion with the driver load path. And the access here is
1662         * completely racy anyway. So don't bother with locking for now.
1663         */
1664         return atomic_read(&dev->open_count) == 0;
1665 }
1666
1667 static const struct vga_switcheroo_client_ops amdgpu_switcheroo_ops = {
1668         .set_gpu_state = amdgpu_switcheroo_set_state,
1669         .reprobe = NULL,
1670         .can_switch = amdgpu_switcheroo_can_switch,
1671 };
1672
1673 /**
1674  * amdgpu_device_ip_set_clockgating_state - set the CG state
1675  *
1676  * @dev: amdgpu_device pointer
1677  * @block_type: Type of hardware IP (SMU, GFX, UVD, etc.)
1678  * @state: clockgating state (gate or ungate)
1679  *
1680  * Sets the requested clockgating state for all instances of
1681  * the hardware IP specified.
1682  * Returns the error code from the last instance.
1683  */
1684 int amdgpu_device_ip_set_clockgating_state(void *dev,
1685                                            enum amd_ip_block_type block_type,
1686                                            enum amd_clockgating_state state)
1687 {
1688         struct amdgpu_device *adev = dev;
1689         int i, r = 0;
1690
1691         for (i = 0; i < adev->num_ip_blocks; i++) {
1692                 if (!adev->ip_blocks[i].status.valid)
1693                         continue;
1694                 if (adev->ip_blocks[i].version->type != block_type)
1695                         continue;
1696                 if (!adev->ip_blocks[i].version->funcs->set_clockgating_state)
1697                         continue;
1698                 r = adev->ip_blocks[i].version->funcs->set_clockgating_state(
1699                         (void *)adev, state);
1700                 if (r)
1701                         DRM_ERROR("set_clockgating_state of IP block <%s> failed %d\n",
1702                                   adev->ip_blocks[i].version->funcs->name, r);
1703         }
1704         return r;
1705 }
1706
1707 /**
1708  * amdgpu_device_ip_set_powergating_state - set the PG state
1709  *
1710  * @dev: amdgpu_device pointer
1711  * @block_type: Type of hardware IP (SMU, GFX, UVD, etc.)
1712  * @state: powergating state (gate or ungate)
1713  *
1714  * Sets the requested powergating state for all instances of
1715  * the hardware IP specified.
1716  * Returns the error code from the last instance.
1717  */
1718 int amdgpu_device_ip_set_powergating_state(void *dev,
1719                                            enum amd_ip_block_type block_type,
1720                                            enum amd_powergating_state state)
1721 {
1722         struct amdgpu_device *adev = dev;
1723         int i, r = 0;
1724
1725         for (i = 0; i < adev->num_ip_blocks; i++) {
1726                 if (!adev->ip_blocks[i].status.valid)
1727                         continue;
1728                 if (adev->ip_blocks[i].version->type != block_type)
1729                         continue;
1730                 if (!adev->ip_blocks[i].version->funcs->set_powergating_state)
1731                         continue;
1732                 r = adev->ip_blocks[i].version->funcs->set_powergating_state(
1733                         (void *)adev, state);
1734                 if (r)
1735                         DRM_ERROR("set_powergating_state of IP block <%s> failed %d\n",
1736                                   adev->ip_blocks[i].version->funcs->name, r);
1737         }
1738         return r;
1739 }
1740
1741 /**
1742  * amdgpu_device_ip_get_clockgating_state - get the CG state
1743  *
1744  * @adev: amdgpu_device pointer
1745  * @flags: clockgating feature flags
1746  *
1747  * Walks the list of IPs on the device and updates the clockgating
1748  * flags for each IP.
1749  * Updates @flags with the feature flags for each hardware IP where
1750  * clockgating is enabled.
1751  */
1752 void amdgpu_device_ip_get_clockgating_state(struct amdgpu_device *adev,
1753                                             u64 *flags)
1754 {
1755         int i;
1756
1757         for (i = 0; i < adev->num_ip_blocks; i++) {
1758                 if (!adev->ip_blocks[i].status.valid)
1759                         continue;
1760                 if (adev->ip_blocks[i].version->funcs->get_clockgating_state)
1761                         adev->ip_blocks[i].version->funcs->get_clockgating_state((void *)adev, flags);
1762         }
1763 }
1764
1765 /**
1766  * amdgpu_device_ip_wait_for_idle - wait for idle
1767  *
1768  * @adev: amdgpu_device pointer
1769  * @block_type: Type of hardware IP (SMU, GFX, UVD, etc.)
1770  *
1771  * Waits for the request hardware IP to be idle.
1772  * Returns 0 for success or a negative error code on failure.
1773  */
1774 int amdgpu_device_ip_wait_for_idle(struct amdgpu_device *adev,
1775                                    enum amd_ip_block_type block_type)
1776 {
1777         int i, r;
1778
1779         for (i = 0; i < adev->num_ip_blocks; i++) {
1780                 if (!adev->ip_blocks[i].status.valid)
1781                         continue;
1782                 if (adev->ip_blocks[i].version->type == block_type) {
1783                         r = adev->ip_blocks[i].version->funcs->wait_for_idle((void *)adev);
1784                         if (r)
1785                                 return r;
1786                         break;
1787                 }
1788         }
1789         return 0;
1790
1791 }
1792
1793 /**
1794  * amdgpu_device_ip_is_idle - is the hardware IP idle
1795  *
1796  * @adev: amdgpu_device pointer
1797  * @block_type: Type of hardware IP (SMU, GFX, UVD, etc.)
1798  *
1799  * Check if the hardware IP is idle or not.
1800  * Returns true if it the IP is idle, false if not.
1801  */
1802 bool amdgpu_device_ip_is_idle(struct amdgpu_device *adev,
1803                               enum amd_ip_block_type block_type)
1804 {
1805         int i;
1806
1807         for (i = 0; i < adev->num_ip_blocks; i++) {
1808                 if (!adev->ip_blocks[i].status.valid)
1809                         continue;
1810                 if (adev->ip_blocks[i].version->type == block_type)
1811                         return adev->ip_blocks[i].version->funcs->is_idle((void *)adev);
1812         }
1813         return true;
1814
1815 }
1816
1817 /**
1818  * amdgpu_device_ip_get_ip_block - get a hw IP pointer
1819  *
1820  * @adev: amdgpu_device pointer
1821  * @type: Type of hardware IP (SMU, GFX, UVD, etc.)
1822  *
1823  * Returns a pointer to the hardware IP block structure
1824  * if it exists for the asic, otherwise NULL.
1825  */
1826 struct amdgpu_ip_block *
1827 amdgpu_device_ip_get_ip_block(struct amdgpu_device *adev,
1828                               enum amd_ip_block_type type)
1829 {
1830         int i;
1831
1832         for (i = 0; i < adev->num_ip_blocks; i++)
1833                 if (adev->ip_blocks[i].version->type == type)
1834                         return &adev->ip_blocks[i];
1835
1836         return NULL;
1837 }
1838
1839 /**
1840  * amdgpu_device_ip_block_version_cmp
1841  *
1842  * @adev: amdgpu_device pointer
1843  * @type: enum amd_ip_block_type
1844  * @major: major version
1845  * @minor: minor version
1846  *
1847  * return 0 if equal or greater
1848  * return 1 if smaller or the ip_block doesn't exist
1849  */
1850 int amdgpu_device_ip_block_version_cmp(struct amdgpu_device *adev,
1851                                        enum amd_ip_block_type type,
1852                                        u32 major, u32 minor)
1853 {
1854         struct amdgpu_ip_block *ip_block = amdgpu_device_ip_get_ip_block(adev, type);
1855
1856         if (ip_block && ((ip_block->version->major > major) ||
1857                         ((ip_block->version->major == major) &&
1858                         (ip_block->version->minor >= minor))))
1859                 return 0;
1860
1861         return 1;
1862 }
1863
1864 /**
1865  * amdgpu_device_ip_block_add
1866  *
1867  * @adev: amdgpu_device pointer
1868  * @ip_block_version: pointer to the IP to add
1869  *
1870  * Adds the IP block driver information to the collection of IPs
1871  * on the asic.
1872  */
1873 int amdgpu_device_ip_block_add(struct amdgpu_device *adev,
1874                                const struct amdgpu_ip_block_version *ip_block_version)
1875 {
1876         if (!ip_block_version)
1877                 return -EINVAL;
1878
1879         switch (ip_block_version->type) {
1880         case AMD_IP_BLOCK_TYPE_VCN:
1881                 if (adev->harvest_ip_mask & AMD_HARVEST_IP_VCN_MASK)
1882                         return 0;
1883                 break;
1884         case AMD_IP_BLOCK_TYPE_JPEG:
1885                 if (adev->harvest_ip_mask & AMD_HARVEST_IP_JPEG_MASK)
1886                         return 0;
1887                 break;
1888         default:
1889                 break;
1890         }
1891
1892         DRM_INFO("add ip block number %d <%s>\n", adev->num_ip_blocks,
1893                   ip_block_version->funcs->name);
1894
1895         adev->ip_blocks[adev->num_ip_blocks++].version = ip_block_version;
1896
1897         return 0;
1898 }
1899
1900 /**
1901  * amdgpu_device_enable_virtual_display - enable virtual display feature
1902  *
1903  * @adev: amdgpu_device pointer
1904  *
1905  * Enabled the virtual display feature if the user has enabled it via
1906  * the module parameter virtual_display.  This feature provides a virtual
1907  * display hardware on headless boards or in virtualized environments.
1908  * This function parses and validates the configuration string specified by
1909  * the user and configues the virtual display configuration (number of
1910  * virtual connectors, crtcs, etc.) specified.
1911  */
1912 static void amdgpu_device_enable_virtual_display(struct amdgpu_device *adev)
1913 {
1914         adev->enable_virtual_display = false;
1915
1916         if (amdgpu_virtual_display) {
1917                 const char *pci_address_name = pci_name(adev->pdev);
1918                 char *pciaddstr, *pciaddstr_tmp, *pciaddname_tmp, *pciaddname;
1919
1920                 pciaddstr = kstrdup(amdgpu_virtual_display, GFP_KERNEL);
1921                 pciaddstr_tmp = pciaddstr;
1922                 while ((pciaddname_tmp = strsep(&pciaddstr_tmp, ";"))) {
1923                         pciaddname = strsep(&pciaddname_tmp, ",");
1924                         if (!strcmp("all", pciaddname)
1925                             || !strcmp(pci_address_name, pciaddname)) {
1926                                 long num_crtc;
1927                                 int res = -1;
1928
1929                                 adev->enable_virtual_display = true;
1930
1931                                 if (pciaddname_tmp)
1932                                         res = kstrtol(pciaddname_tmp, 10,
1933                                                       &num_crtc);
1934
1935                                 if (!res) {
1936                                         if (num_crtc < 1)
1937                                                 num_crtc = 1;
1938                                         if (num_crtc > 6)
1939                                                 num_crtc = 6;
1940                                         adev->mode_info.num_crtc = num_crtc;
1941                                 } else {
1942                                         adev->mode_info.num_crtc = 1;
1943                                 }
1944                                 break;
1945                         }
1946                 }
1947
1948                 DRM_INFO("virtual display string:%s, %s:virtual_display:%d, num_crtc:%d\n",
1949                          amdgpu_virtual_display, pci_address_name,
1950                          adev->enable_virtual_display, adev->mode_info.num_crtc);
1951
1952                 kfree(pciaddstr);
1953         }
1954 }
1955
1956 void amdgpu_device_set_sriov_virtual_display(struct amdgpu_device *adev)
1957 {
1958         if (amdgpu_sriov_vf(adev) && !adev->enable_virtual_display) {
1959                 adev->mode_info.num_crtc = 1;
1960                 adev->enable_virtual_display = true;
1961                 DRM_INFO("virtual_display:%d, num_crtc:%d\n",
1962                          adev->enable_virtual_display, adev->mode_info.num_crtc);
1963         }
1964 }
1965
1966 /**
1967  * amdgpu_device_parse_gpu_info_fw - parse gpu info firmware
1968  *
1969  * @adev: amdgpu_device pointer
1970  *
1971  * Parses the asic configuration parameters specified in the gpu info
1972  * firmware and makes them availale to the driver for use in configuring
1973  * the asic.
1974  * Returns 0 on success, -EINVAL on failure.
1975  */
1976 static int amdgpu_device_parse_gpu_info_fw(struct amdgpu_device *adev)
1977 {
1978         const char *chip_name;
1979         char fw_name[40];
1980         int err;
1981         const struct gpu_info_firmware_header_v1_0 *hdr;
1982
1983         adev->firmware.gpu_info_fw = NULL;
1984
1985         if (adev->mman.discovery_bin) {
1986                 /*
1987                  * FIXME: The bounding box is still needed by Navi12, so
1988                  * temporarily read it from gpu_info firmware. Should be dropped
1989                  * when DAL no longer needs it.
1990                  */
1991                 if (adev->asic_type != CHIP_NAVI12)
1992                         return 0;
1993         }
1994
1995         switch (adev->asic_type) {
1996         default:
1997                 return 0;
1998         case CHIP_VEGA10:
1999                 chip_name = "vega10";
2000                 break;
2001         case CHIP_VEGA12:
2002                 chip_name = "vega12";
2003                 break;
2004         case CHIP_RAVEN:
2005                 if (adev->apu_flags & AMD_APU_IS_RAVEN2)
2006                         chip_name = "raven2";
2007                 else if (adev->apu_flags & AMD_APU_IS_PICASSO)
2008                         chip_name = "picasso";
2009                 else
2010                         chip_name = "raven";
2011                 break;
2012         case CHIP_ARCTURUS:
2013                 chip_name = "arcturus";
2014                 break;
2015         case CHIP_NAVI12:
2016                 chip_name = "navi12";
2017                 break;
2018         }
2019
2020         snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_gpu_info.bin", chip_name);
2021         err = amdgpu_ucode_request(adev, &adev->firmware.gpu_info_fw, fw_name);
2022         if (err) {
2023                 dev_err(adev->dev,
2024                         "Failed to get gpu_info firmware \"%s\"\n",
2025                         fw_name);
2026                 goto out;
2027         }
2028
2029         hdr = (const struct gpu_info_firmware_header_v1_0 *)adev->firmware.gpu_info_fw->data;
2030         amdgpu_ucode_print_gpu_info_hdr(&hdr->header);
2031
2032         switch (hdr->version_major) {
2033         case 1:
2034         {
2035                 const struct gpu_info_firmware_v1_0 *gpu_info_fw =
2036                         (const struct gpu_info_firmware_v1_0 *)(adev->firmware.gpu_info_fw->data +
2037                                                                 le32_to_cpu(hdr->header.ucode_array_offset_bytes));
2038
2039                 /*
2040                  * Should be droped when DAL no longer needs it.
2041                  */
2042                 if (adev->asic_type == CHIP_NAVI12)
2043                         goto parse_soc_bounding_box;
2044
2045                 adev->gfx.config.max_shader_engines = le32_to_cpu(gpu_info_fw->gc_num_se);
2046                 adev->gfx.config.max_cu_per_sh = le32_to_cpu(gpu_info_fw->gc_num_cu_per_sh);
2047                 adev->gfx.config.max_sh_per_se = le32_to_cpu(gpu_info_fw->gc_num_sh_per_se);
2048                 adev->gfx.config.max_backends_per_se = le32_to_cpu(gpu_info_fw->gc_num_rb_per_se);
2049                 adev->gfx.config.max_texture_channel_caches =
2050                         le32_to_cpu(gpu_info_fw->gc_num_tccs);
2051                 adev->gfx.config.max_gprs = le32_to_cpu(gpu_info_fw->gc_num_gprs);
2052                 adev->gfx.config.max_gs_threads = le32_to_cpu(gpu_info_fw->gc_num_max_gs_thds);
2053                 adev->gfx.config.gs_vgt_table_depth = le32_to_cpu(gpu_info_fw->gc_gs_table_depth);
2054                 adev->gfx.config.gs_prim_buffer_depth = le32_to_cpu(gpu_info_fw->gc_gsprim_buff_depth);
2055                 adev->gfx.config.double_offchip_lds_buf =
2056                         le32_to_cpu(gpu_info_fw->gc_double_offchip_lds_buffer);
2057                 adev->gfx.cu_info.wave_front_size = le32_to_cpu(gpu_info_fw->gc_wave_size);
2058                 adev->gfx.cu_info.max_waves_per_simd =
2059                         le32_to_cpu(gpu_info_fw->gc_max_waves_per_simd);
2060                 adev->gfx.cu_info.max_scratch_slots_per_cu =
2061                         le32_to_cpu(gpu_info_fw->gc_max_scratch_slots_per_cu);
2062                 adev->gfx.cu_info.lds_size = le32_to_cpu(gpu_info_fw->gc_lds_size);
2063                 if (hdr->version_minor >= 1) {
2064                         const struct gpu_info_firmware_v1_1 *gpu_info_fw =
2065                                 (const struct gpu_info_firmware_v1_1 *)(adev->firmware.gpu_info_fw->data +
2066                                                                         le32_to_cpu(hdr->header.ucode_array_offset_bytes));
2067                         adev->gfx.config.num_sc_per_sh =
2068                                 le32_to_cpu(gpu_info_fw->num_sc_per_sh);
2069                         adev->gfx.config.num_packer_per_sc =
2070                                 le32_to_cpu(gpu_info_fw->num_packer_per_sc);
2071                 }
2072
2073 parse_soc_bounding_box:
2074                 /*
2075                  * soc bounding box info is not integrated in disocovery table,
2076                  * we always need to parse it from gpu info firmware if needed.
2077                  */
2078                 if (hdr->version_minor == 2) {
2079                         const struct gpu_info_firmware_v1_2 *gpu_info_fw =
2080                                 (const struct gpu_info_firmware_v1_2 *)(adev->firmware.gpu_info_fw->data +
2081                                                                         le32_to_cpu(hdr->header.ucode_array_offset_bytes));
2082                         adev->dm.soc_bounding_box = &gpu_info_fw->soc_bounding_box;
2083                 }
2084                 break;
2085         }
2086         default:
2087                 dev_err(adev->dev,
2088                         "Unsupported gpu_info table %d\n", hdr->header.ucode_version);
2089                 err = -EINVAL;
2090                 goto out;
2091         }
2092 out:
2093         return err;
2094 }
2095
2096 /**
2097  * amdgpu_device_ip_early_init - run early init for hardware IPs
2098  *
2099  * @adev: amdgpu_device pointer
2100  *
2101  * Early initialization pass for hardware IPs.  The hardware IPs that make
2102  * up each asic are discovered each IP's early_init callback is run.  This
2103  * is the first stage in initializing the asic.
2104  * Returns 0 on success, negative error code on failure.
2105  */
2106 static int amdgpu_device_ip_early_init(struct amdgpu_device *adev)
2107 {
2108         struct drm_device *dev = adev_to_drm(adev);
2109         struct pci_dev *parent;
2110         int i, r;
2111         bool total;
2112
2113         amdgpu_device_enable_virtual_display(adev);
2114
2115         if (amdgpu_sriov_vf(adev)) {
2116                 r = amdgpu_virt_request_full_gpu(adev, true);
2117                 if (r)
2118                         return r;
2119         }
2120
2121         switch (adev->asic_type) {
2122 #ifdef CONFIG_DRM_AMDGPU_SI
2123         case CHIP_VERDE:
2124         case CHIP_TAHITI:
2125         case CHIP_PITCAIRN:
2126         case CHIP_OLAND:
2127         case CHIP_HAINAN:
2128                 adev->family = AMDGPU_FAMILY_SI;
2129                 r = si_set_ip_blocks(adev);
2130                 if (r)
2131                         return r;
2132                 break;
2133 #endif
2134 #ifdef CONFIG_DRM_AMDGPU_CIK
2135         case CHIP_BONAIRE:
2136         case CHIP_HAWAII:
2137         case CHIP_KAVERI:
2138         case CHIP_KABINI:
2139         case CHIP_MULLINS:
2140                 if (adev->flags & AMD_IS_APU)
2141                         adev->family = AMDGPU_FAMILY_KV;
2142                 else
2143                         adev->family = AMDGPU_FAMILY_CI;
2144
2145                 r = cik_set_ip_blocks(adev);
2146                 if (r)
2147                         return r;
2148                 break;
2149 #endif
2150         case CHIP_TOPAZ:
2151         case CHIP_TONGA:
2152         case CHIP_FIJI:
2153         case CHIP_POLARIS10:
2154         case CHIP_POLARIS11:
2155         case CHIP_POLARIS12:
2156         case CHIP_VEGAM:
2157         case CHIP_CARRIZO:
2158         case CHIP_STONEY:
2159                 if (adev->flags & AMD_IS_APU)
2160                         adev->family = AMDGPU_FAMILY_CZ;
2161                 else
2162                         adev->family = AMDGPU_FAMILY_VI;
2163
2164                 r = vi_set_ip_blocks(adev);
2165                 if (r)
2166                         return r;
2167                 break;
2168         default:
2169                 r = amdgpu_discovery_set_ip_blocks(adev);
2170                 if (r)
2171                         return r;
2172                 break;
2173         }
2174
2175         if (amdgpu_has_atpx() &&
2176             (amdgpu_is_atpx_hybrid() ||
2177              amdgpu_has_atpx_dgpu_power_cntl()) &&
2178             ((adev->flags & AMD_IS_APU) == 0) &&
2179             !pci_is_thunderbolt_attached(to_pci_dev(dev->dev)))
2180                 adev->flags |= AMD_IS_PX;
2181
2182         if (!(adev->flags & AMD_IS_APU)) {
2183                 parent = pci_upstream_bridge(adev->pdev);
2184                 adev->has_pr3 = parent ? pci_pr3_present(parent) : false;
2185         }
2186
2187
2188         adev->pm.pp_feature = amdgpu_pp_feature_mask;
2189         if (amdgpu_sriov_vf(adev) || sched_policy == KFD_SCHED_POLICY_NO_HWS)
2190                 adev->pm.pp_feature &= ~PP_GFXOFF_MASK;
2191         if (amdgpu_sriov_vf(adev) && adev->asic_type == CHIP_SIENNA_CICHLID)
2192                 adev->pm.pp_feature &= ~PP_OVERDRIVE_MASK;
2193
2194         total = true;
2195         for (i = 0; i < adev->num_ip_blocks; i++) {
2196                 if ((amdgpu_ip_block_mask & (1 << i)) == 0) {
2197                         DRM_ERROR("disabled ip block: %d <%s>\n",
2198                                   i, adev->ip_blocks[i].version->funcs->name);
2199                         adev->ip_blocks[i].status.valid = false;
2200                 } else {
2201                         if (adev->ip_blocks[i].version->funcs->early_init) {
2202                                 r = adev->ip_blocks[i].version->funcs->early_init((void *)adev);
2203                                 if (r == -ENOENT) {
2204                                         adev->ip_blocks[i].status.valid = false;
2205                                 } else if (r) {
2206                                         DRM_ERROR("early_init of IP block <%s> failed %d\n",
2207                                                   adev->ip_blocks[i].version->funcs->name, r);
2208                                         total = false;
2209                                 } else {
2210                                         adev->ip_blocks[i].status.valid = true;
2211                                 }
2212                         } else {
2213                                 adev->ip_blocks[i].status.valid = true;
2214                         }
2215                 }
2216                 /* get the vbios after the asic_funcs are set up */
2217                 if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_COMMON) {
2218                         r = amdgpu_device_parse_gpu_info_fw(adev);
2219                         if (r)
2220                                 return r;
2221
2222                         /* Read BIOS */
2223                         if (!amdgpu_get_bios(adev))
2224                                 return -EINVAL;
2225
2226                         r = amdgpu_atombios_init(adev);
2227                         if (r) {
2228                                 dev_err(adev->dev, "amdgpu_atombios_init failed\n");
2229                                 amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ATOMBIOS_INIT_FAIL, 0, 0);
2230                                 return r;
2231                         }
2232
2233                         /*get pf2vf msg info at it's earliest time*/
2234                         if (amdgpu_sriov_vf(adev))
2235                                 amdgpu_virt_init_data_exchange(adev);
2236
2237                 }
2238         }
2239         if (!total)
2240                 return -ENODEV;
2241
2242         amdgpu_amdkfd_device_probe(adev);
2243         adev->cg_flags &= amdgpu_cg_mask;
2244         adev->pg_flags &= amdgpu_pg_mask;
2245
2246         return 0;
2247 }
2248
2249 static int amdgpu_device_ip_hw_init_phase1(struct amdgpu_device *adev)
2250 {
2251         int i, r;
2252
2253         for (i = 0; i < adev->num_ip_blocks; i++) {
2254                 if (!adev->ip_blocks[i].status.sw)
2255                         continue;
2256                 if (adev->ip_blocks[i].status.hw)
2257                         continue;
2258                 if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_COMMON ||
2259                     (amdgpu_sriov_vf(adev) && (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_PSP)) ||
2260                     adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_IH) {
2261                         r = adev->ip_blocks[i].version->funcs->hw_init(adev);
2262                         if (r) {
2263                                 DRM_ERROR("hw_init of IP block <%s> failed %d\n",
2264                                           adev->ip_blocks[i].version->funcs->name, r);
2265                                 return r;
2266                         }
2267                         adev->ip_blocks[i].status.hw = true;
2268                 }
2269         }
2270
2271         return 0;
2272 }
2273
2274 static int amdgpu_device_ip_hw_init_phase2(struct amdgpu_device *adev)
2275 {
2276         int i, r;
2277
2278         for (i = 0; i < adev->num_ip_blocks; i++) {
2279                 if (!adev->ip_blocks[i].status.sw)
2280                         continue;
2281                 if (adev->ip_blocks[i].status.hw)
2282                         continue;
2283                 r = adev->ip_blocks[i].version->funcs->hw_init(adev);
2284                 if (r) {
2285                         DRM_ERROR("hw_init of IP block <%s> failed %d\n",
2286                                   adev->ip_blocks[i].version->funcs->name, r);
2287                         return r;
2288                 }
2289                 adev->ip_blocks[i].status.hw = true;
2290         }
2291
2292         return 0;
2293 }
2294
2295 static int amdgpu_device_fw_loading(struct amdgpu_device *adev)
2296 {
2297         int r = 0;
2298         int i;
2299         uint32_t smu_version;
2300
2301         if (adev->asic_type >= CHIP_VEGA10) {
2302                 for (i = 0; i < adev->num_ip_blocks; i++) {
2303                         if (adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_PSP)
2304                                 continue;
2305
2306                         if (!adev->ip_blocks[i].status.sw)
2307                                 continue;
2308
2309                         /* no need to do the fw loading again if already done*/
2310                         if (adev->ip_blocks[i].status.hw == true)
2311                                 break;
2312
2313                         if (amdgpu_in_reset(adev) || adev->in_suspend) {
2314                                 r = adev->ip_blocks[i].version->funcs->resume(adev);
2315                                 if (r) {
2316                                         DRM_ERROR("resume of IP block <%s> failed %d\n",
2317                                                           adev->ip_blocks[i].version->funcs->name, r);
2318                                         return r;
2319                                 }
2320                         } else {
2321                                 r = adev->ip_blocks[i].version->funcs->hw_init(adev);
2322                                 if (r) {
2323                                         DRM_ERROR("hw_init of IP block <%s> failed %d\n",
2324                                                           adev->ip_blocks[i].version->funcs->name, r);
2325                                         return r;
2326                                 }
2327                         }
2328
2329                         adev->ip_blocks[i].status.hw = true;
2330                         break;
2331                 }
2332         }
2333
2334         if (!amdgpu_sriov_vf(adev) || adev->asic_type == CHIP_TONGA)
2335                 r = amdgpu_pm_load_smu_firmware(adev, &smu_version);
2336
2337         return r;
2338 }
2339
2340 static int amdgpu_device_init_schedulers(struct amdgpu_device *adev)
2341 {
2342         long timeout;
2343         int r, i;
2344
2345         for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
2346                 struct amdgpu_ring *ring = adev->rings[i];
2347
2348                 /* No need to setup the GPU scheduler for rings that don't need it */
2349                 if (!ring || ring->no_scheduler)
2350                         continue;
2351
2352                 switch (ring->funcs->type) {
2353                 case AMDGPU_RING_TYPE_GFX:
2354                         timeout = adev->gfx_timeout;
2355                         break;
2356                 case AMDGPU_RING_TYPE_COMPUTE:
2357                         timeout = adev->compute_timeout;
2358                         break;
2359                 case AMDGPU_RING_TYPE_SDMA:
2360                         timeout = adev->sdma_timeout;
2361                         break;
2362                 default:
2363                         timeout = adev->video_timeout;
2364                         break;
2365                 }
2366
2367                 r = drm_sched_init(&ring->sched, &amdgpu_sched_ops,
2368                                    ring->num_hw_submission, 0,
2369                                    timeout, adev->reset_domain->wq,
2370                                    ring->sched_score, ring->name,
2371                                    adev->dev);
2372                 if (r) {
2373                         DRM_ERROR("Failed to create scheduler on ring %s.\n",
2374                                   ring->name);
2375                         return r;
2376                 }
2377         }
2378
2379         return 0;
2380 }
2381
2382
2383 /**
2384  * amdgpu_device_ip_init - run init for hardware IPs
2385  *
2386  * @adev: amdgpu_device pointer
2387  *
2388  * Main initialization pass for hardware IPs.  The list of all the hardware
2389  * IPs that make up the asic is walked and the sw_init and hw_init callbacks
2390  * are run.  sw_init initializes the software state associated with each IP
2391  * and hw_init initializes the hardware associated with each IP.
2392  * Returns 0 on success, negative error code on failure.
2393  */
2394 static int amdgpu_device_ip_init(struct amdgpu_device *adev)
2395 {
2396         int i, r;
2397
2398         r = amdgpu_ras_init(adev);
2399         if (r)
2400                 return r;
2401
2402         for (i = 0; i < adev->num_ip_blocks; i++) {
2403                 if (!adev->ip_blocks[i].status.valid)
2404                         continue;
2405                 r = adev->ip_blocks[i].version->funcs->sw_init((void *)adev);
2406                 if (r) {
2407                         DRM_ERROR("sw_init of IP block <%s> failed %d\n",
2408                                   adev->ip_blocks[i].version->funcs->name, r);
2409                         goto init_failed;
2410                 }
2411                 adev->ip_blocks[i].status.sw = true;
2412
2413                 if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_COMMON) {
2414                         /* need to do common hw init early so everything is set up for gmc */
2415                         r = adev->ip_blocks[i].version->funcs->hw_init((void *)adev);
2416                         if (r) {
2417                                 DRM_ERROR("hw_init %d failed %d\n", i, r);
2418                                 goto init_failed;
2419                         }
2420                         adev->ip_blocks[i].status.hw = true;
2421                 } else if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC) {
2422                         /* need to do gmc hw init early so we can allocate gpu mem */
2423                         /* Try to reserve bad pages early */
2424                         if (amdgpu_sriov_vf(adev))
2425                                 amdgpu_virt_exchange_data(adev);
2426
2427                         r = amdgpu_device_mem_scratch_init(adev);
2428                         if (r) {
2429                                 DRM_ERROR("amdgpu_mem_scratch_init failed %d\n", r);
2430                                 goto init_failed;
2431                         }
2432                         r = adev->ip_blocks[i].version->funcs->hw_init((void *)adev);
2433                         if (r) {
2434                                 DRM_ERROR("hw_init %d failed %d\n", i, r);
2435                                 goto init_failed;
2436                         }
2437                         r = amdgpu_device_wb_init(adev);
2438                         if (r) {
2439                                 DRM_ERROR("amdgpu_device_wb_init failed %d\n", r);
2440                                 goto init_failed;
2441                         }
2442                         adev->ip_blocks[i].status.hw = true;
2443
2444                         /* right after GMC hw init, we create CSA */
2445                         if (amdgpu_mcbp) {
2446                                 r = amdgpu_allocate_static_csa(adev, &adev->virt.csa_obj,
2447                                                                AMDGPU_GEM_DOMAIN_VRAM |
2448                                                                AMDGPU_GEM_DOMAIN_GTT,
2449                                                                AMDGPU_CSA_SIZE);
2450                                 if (r) {
2451                                         DRM_ERROR("allocate CSA failed %d\n", r);
2452                                         goto init_failed;
2453                                 }
2454                         }
2455                 }
2456         }
2457
2458         if (amdgpu_sriov_vf(adev))
2459                 amdgpu_virt_init_data_exchange(adev);
2460
2461         r = amdgpu_ib_pool_init(adev);
2462         if (r) {
2463                 dev_err(adev->dev, "IB initialization failed (%d).\n", r);
2464                 amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_IB_INIT_FAIL, 0, r);
2465                 goto init_failed;
2466         }
2467
2468         r = amdgpu_ucode_create_bo(adev); /* create ucode bo when sw_init complete*/
2469         if (r)
2470                 goto init_failed;
2471
2472         r = amdgpu_device_ip_hw_init_phase1(adev);
2473         if (r)
2474                 goto init_failed;
2475
2476         r = amdgpu_device_fw_loading(adev);
2477         if (r)
2478                 goto init_failed;
2479
2480         r = amdgpu_device_ip_hw_init_phase2(adev);
2481         if (r)
2482                 goto init_failed;
2483
2484         /*
2485          * retired pages will be loaded from eeprom and reserved here,
2486          * it should be called after amdgpu_device_ip_hw_init_phase2  since
2487          * for some ASICs the RAS EEPROM code relies on SMU fully functioning
2488          * for I2C communication which only true at this point.
2489          *
2490          * amdgpu_ras_recovery_init may fail, but the upper only cares the
2491          * failure from bad gpu situation and stop amdgpu init process
2492          * accordingly. For other failed cases, it will still release all
2493          * the resource and print error message, rather than returning one
2494          * negative value to upper level.
2495          *
2496          * Note: theoretically, this should be called before all vram allocations
2497          * to protect retired page from abusing
2498          */
2499         r = amdgpu_ras_recovery_init(adev);
2500         if (r)
2501                 goto init_failed;
2502
2503         /**
2504          * In case of XGMI grab extra reference for reset domain for this device
2505          */
2506         if (adev->gmc.xgmi.num_physical_nodes > 1) {
2507                 if (amdgpu_xgmi_add_device(adev) == 0) {
2508                         if (!amdgpu_sriov_vf(adev)) {
2509                                 struct amdgpu_hive_info *hive = amdgpu_get_xgmi_hive(adev);
2510
2511                                 if (WARN_ON(!hive)) {
2512                                         r = -ENOENT;
2513                                         goto init_failed;
2514                                 }
2515
2516                                 if (!hive->reset_domain ||
2517                                     !amdgpu_reset_get_reset_domain(hive->reset_domain)) {
2518                                         r = -ENOENT;
2519                                         amdgpu_put_xgmi_hive(hive);
2520                                         goto init_failed;
2521                                 }
2522
2523                                 /* Drop the early temporary reset domain we created for device */
2524                                 amdgpu_reset_put_reset_domain(adev->reset_domain);
2525                                 adev->reset_domain = hive->reset_domain;
2526                                 amdgpu_put_xgmi_hive(hive);
2527                         }
2528                 }
2529         }
2530
2531         r = amdgpu_device_init_schedulers(adev);
2532         if (r)
2533                 goto init_failed;
2534
2535         /* Don't init kfd if whole hive need to be reset during init */
2536         if (!adev->gmc.xgmi.pending_reset)
2537                 amdgpu_amdkfd_device_init(adev);
2538
2539         amdgpu_fru_get_product_info(adev);
2540
2541 init_failed:
2542
2543         return r;
2544 }
2545
2546 /**
2547  * amdgpu_device_fill_reset_magic - writes reset magic to gart pointer
2548  *
2549  * @adev: amdgpu_device pointer
2550  *
2551  * Writes a reset magic value to the gart pointer in VRAM.  The driver calls
2552  * this function before a GPU reset.  If the value is retained after a
2553  * GPU reset, VRAM has not been lost.  Some GPU resets may destry VRAM contents.
2554  */
2555 static void amdgpu_device_fill_reset_magic(struct amdgpu_device *adev)
2556 {
2557         memcpy(adev->reset_magic, adev->gart.ptr, AMDGPU_RESET_MAGIC_NUM);
2558 }
2559
2560 /**
2561  * amdgpu_device_check_vram_lost - check if vram is valid
2562  *
2563  * @adev: amdgpu_device pointer
2564  *
2565  * Checks the reset magic value written to the gart pointer in VRAM.
2566  * The driver calls this after a GPU reset to see if the contents of
2567  * VRAM is lost or now.
2568  * returns true if vram is lost, false if not.
2569  */
2570 static bool amdgpu_device_check_vram_lost(struct amdgpu_device *adev)
2571 {
2572         if (memcmp(adev->gart.ptr, adev->reset_magic,
2573                         AMDGPU_RESET_MAGIC_NUM))
2574                 return true;
2575
2576         if (!amdgpu_in_reset(adev))
2577                 return false;
2578
2579         /*
2580          * For all ASICs with baco/mode1 reset, the VRAM is
2581          * always assumed to be lost.
2582          */
2583         switch (amdgpu_asic_reset_method(adev)) {
2584         case AMD_RESET_METHOD_BACO:
2585         case AMD_RESET_METHOD_MODE1:
2586                 return true;
2587         default:
2588                 return false;
2589         }
2590 }
2591
2592 /**
2593  * amdgpu_device_set_cg_state - set clockgating for amdgpu device
2594  *
2595  * @adev: amdgpu_device pointer
2596  * @state: clockgating state (gate or ungate)
2597  *
2598  * The list of all the hardware IPs that make up the asic is walked and the
2599  * set_clockgating_state callbacks are run.
2600  * Late initialization pass enabling clockgating for hardware IPs.
2601  * Fini or suspend, pass disabling clockgating for hardware IPs.
2602  * Returns 0 on success, negative error code on failure.
2603  */
2604
2605 int amdgpu_device_set_cg_state(struct amdgpu_device *adev,
2606                                enum amd_clockgating_state state)
2607 {
2608         int i, j, r;
2609
2610         if (amdgpu_emu_mode == 1)
2611                 return 0;
2612
2613         for (j = 0; j < adev->num_ip_blocks; j++) {
2614                 i = state == AMD_CG_STATE_GATE ? j : adev->num_ip_blocks - j - 1;
2615                 if (!adev->ip_blocks[i].status.late_initialized)
2616                         continue;
2617                 /* skip CG for GFX, SDMA on S0ix */
2618                 if (adev->in_s0ix &&
2619                     (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GFX ||
2620                      adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_SDMA))
2621                         continue;
2622                 /* skip CG for VCE/UVD, it's handled specially */
2623                 if (adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_UVD &&
2624                     adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_VCE &&
2625                     adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_VCN &&
2626                     adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_JPEG &&
2627                     adev->ip_blocks[i].version->funcs->set_clockgating_state) {
2628                         /* enable clockgating to save power */
2629                         r = adev->ip_blocks[i].version->funcs->set_clockgating_state((void *)adev,
2630                                                                                      state);
2631                         if (r) {
2632                                 DRM_ERROR("set_clockgating_state(gate) of IP block <%s> failed %d\n",
2633                                           adev->ip_blocks[i].version->funcs->name, r);
2634                                 return r;
2635                         }
2636                 }
2637         }
2638
2639         return 0;
2640 }
2641
2642 int amdgpu_device_set_pg_state(struct amdgpu_device *adev,
2643                                enum amd_powergating_state state)
2644 {
2645         int i, j, r;
2646
2647         if (amdgpu_emu_mode == 1)
2648                 return 0;
2649
2650         for (j = 0; j < adev->num_ip_blocks; j++) {
2651                 i = state == AMD_PG_STATE_GATE ? j : adev->num_ip_blocks - j - 1;
2652                 if (!adev->ip_blocks[i].status.late_initialized)
2653                         continue;
2654                 /* skip PG for GFX, SDMA on S0ix */
2655                 if (adev->in_s0ix &&
2656                     (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GFX ||
2657                      adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_SDMA))
2658                         continue;
2659                 /* skip CG for VCE/UVD, it's handled specially */
2660                 if (adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_UVD &&
2661                     adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_VCE &&
2662                     adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_VCN &&
2663                     adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_JPEG &&
2664                     adev->ip_blocks[i].version->funcs->set_powergating_state) {
2665                         /* enable powergating to save power */
2666                         r = adev->ip_blocks[i].version->funcs->set_powergating_state((void *)adev,
2667                                                                                         state);
2668                         if (r) {
2669                                 DRM_ERROR("set_powergating_state(gate) of IP block <%s> failed %d\n",
2670                                           adev->ip_blocks[i].version->funcs->name, r);
2671                                 return r;
2672                         }
2673                 }
2674         }
2675         return 0;
2676 }
2677
2678 static int amdgpu_device_enable_mgpu_fan_boost(void)
2679 {
2680         struct amdgpu_gpu_instance *gpu_ins;
2681         struct amdgpu_device *adev;
2682         int i, ret = 0;
2683
2684         mutex_lock(&mgpu_info.mutex);
2685
2686         /*
2687          * MGPU fan boost feature should be enabled
2688          * only when there are two or more dGPUs in
2689          * the system
2690          */
2691         if (mgpu_info.num_dgpu < 2)
2692                 goto out;
2693
2694         for (i = 0; i < mgpu_info.num_dgpu; i++) {
2695                 gpu_ins = &(mgpu_info.gpu_ins[i]);
2696                 adev = gpu_ins->adev;
2697                 if (!(adev->flags & AMD_IS_APU) &&
2698                     !gpu_ins->mgpu_fan_enabled) {
2699                         ret = amdgpu_dpm_enable_mgpu_fan_boost(adev);
2700                         if (ret)
2701                                 break;
2702
2703                         gpu_ins->mgpu_fan_enabled = 1;
2704                 }
2705         }
2706
2707 out:
2708         mutex_unlock(&mgpu_info.mutex);
2709
2710         return ret;
2711 }
2712
2713 /**
2714  * amdgpu_device_ip_late_init - run late init for hardware IPs
2715  *
2716  * @adev: amdgpu_device pointer
2717  *
2718  * Late initialization pass for hardware IPs.  The list of all the hardware
2719  * IPs that make up the asic is walked and the late_init callbacks are run.
2720  * late_init covers any special initialization that an IP requires
2721  * after all of the have been initialized or something that needs to happen
2722  * late in the init process.
2723  * Returns 0 on success, negative error code on failure.
2724  */
2725 static int amdgpu_device_ip_late_init(struct amdgpu_device *adev)
2726 {
2727         struct amdgpu_gpu_instance *gpu_instance;
2728         int i = 0, r;
2729
2730         for (i = 0; i < adev->num_ip_blocks; i++) {
2731                 if (!adev->ip_blocks[i].status.hw)
2732                         continue;
2733                 if (adev->ip_blocks[i].version->funcs->late_init) {
2734                         r = adev->ip_blocks[i].version->funcs->late_init((void *)adev);
2735                         if (r) {
2736                                 DRM_ERROR("late_init of IP block <%s> failed %d\n",
2737                                           adev->ip_blocks[i].version->funcs->name, r);
2738                                 return r;
2739                         }
2740                 }
2741                 adev->ip_blocks[i].status.late_initialized = true;
2742         }
2743
2744         r = amdgpu_ras_late_init(adev);
2745         if (r) {
2746                 DRM_ERROR("amdgpu_ras_late_init failed %d", r);
2747                 return r;
2748         }
2749
2750         amdgpu_ras_set_error_query_ready(adev, true);
2751
2752         amdgpu_device_set_cg_state(adev, AMD_CG_STATE_GATE);
2753         amdgpu_device_set_pg_state(adev, AMD_PG_STATE_GATE);
2754
2755         amdgpu_device_fill_reset_magic(adev);
2756
2757         r = amdgpu_device_enable_mgpu_fan_boost();
2758         if (r)
2759                 DRM_ERROR("enable mgpu fan boost failed (%d).\n", r);
2760
2761         /* For passthrough configuration on arcturus and aldebaran, enable special handling SBR */
2762         if (amdgpu_passthrough(adev) && ((adev->asic_type == CHIP_ARCTURUS && adev->gmc.xgmi.num_physical_nodes > 1)||
2763                                adev->asic_type == CHIP_ALDEBARAN ))
2764                 amdgpu_dpm_handle_passthrough_sbr(adev, true);
2765
2766         if (adev->gmc.xgmi.num_physical_nodes > 1) {
2767                 mutex_lock(&mgpu_info.mutex);
2768
2769                 /*
2770                  * Reset device p-state to low as this was booted with high.
2771                  *
2772                  * This should be performed only after all devices from the same
2773                  * hive get initialized.
2774                  *
2775                  * However, it's unknown how many device in the hive in advance.
2776                  * As this is counted one by one during devices initializations.
2777                  *
2778                  * So, we wait for all XGMI interlinked devices initialized.
2779                  * This may bring some delays as those devices may come from
2780                  * different hives. But that should be OK.
2781                  */
2782                 if (mgpu_info.num_dgpu == adev->gmc.xgmi.num_physical_nodes) {
2783                         for (i = 0; i < mgpu_info.num_gpu; i++) {
2784                                 gpu_instance = &(mgpu_info.gpu_ins[i]);
2785                                 if (gpu_instance->adev->flags & AMD_IS_APU)
2786                                         continue;
2787
2788                                 r = amdgpu_xgmi_set_pstate(gpu_instance->adev,
2789                                                 AMDGPU_XGMI_PSTATE_MIN);
2790                                 if (r) {
2791                                         DRM_ERROR("pstate setting failed (%d).\n", r);
2792                                         break;
2793                                 }
2794                         }
2795                 }
2796
2797                 mutex_unlock(&mgpu_info.mutex);
2798         }
2799
2800         return 0;
2801 }
2802
2803 /**
2804  * amdgpu_device_smu_fini_early - smu hw_fini wrapper
2805  *
2806  * @adev: amdgpu_device pointer
2807  *
2808  * For ASICs need to disable SMC first
2809  */
2810 static void amdgpu_device_smu_fini_early(struct amdgpu_device *adev)
2811 {
2812         int i, r;
2813
2814         if (adev->ip_versions[GC_HWIP][0] > IP_VERSION(9, 0, 0))
2815                 return;
2816
2817         for (i = 0; i < adev->num_ip_blocks; i++) {
2818                 if (!adev->ip_blocks[i].status.hw)
2819                         continue;
2820                 if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_SMC) {
2821                         r = adev->ip_blocks[i].version->funcs->hw_fini((void *)adev);
2822                         /* XXX handle errors */
2823                         if (r) {
2824                                 DRM_DEBUG("hw_fini of IP block <%s> failed %d\n",
2825                                           adev->ip_blocks[i].version->funcs->name, r);
2826                         }
2827                         adev->ip_blocks[i].status.hw = false;
2828                         break;
2829                 }
2830         }
2831 }
2832
2833 static int amdgpu_device_ip_fini_early(struct amdgpu_device *adev)
2834 {
2835         int i, r;
2836
2837         for (i = 0; i < adev->num_ip_blocks; i++) {
2838                 if (!adev->ip_blocks[i].version->funcs->early_fini)
2839                         continue;
2840
2841                 r = adev->ip_blocks[i].version->funcs->early_fini((void *)adev);
2842                 if (r) {
2843                         DRM_DEBUG("early_fini of IP block <%s> failed %d\n",
2844                                   adev->ip_blocks[i].version->funcs->name, r);
2845                 }
2846         }
2847
2848         amdgpu_device_set_pg_state(adev, AMD_PG_STATE_UNGATE);
2849         amdgpu_device_set_cg_state(adev, AMD_CG_STATE_UNGATE);
2850
2851         amdgpu_amdkfd_suspend(adev, false);
2852
2853         /* Workaroud for ASICs need to disable SMC first */
2854         amdgpu_device_smu_fini_early(adev);
2855
2856         for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
2857                 if (!adev->ip_blocks[i].status.hw)
2858                         continue;
2859
2860                 r = adev->ip_blocks[i].version->funcs->hw_fini((void *)adev);
2861                 /* XXX handle errors */
2862                 if (r) {
2863                         DRM_DEBUG("hw_fini of IP block <%s> failed %d\n",
2864                                   adev->ip_blocks[i].version->funcs->name, r);
2865                 }
2866
2867                 adev->ip_blocks[i].status.hw = false;
2868         }
2869
2870         if (amdgpu_sriov_vf(adev)) {
2871                 if (amdgpu_virt_release_full_gpu(adev, false))
2872                         DRM_ERROR("failed to release exclusive mode on fini\n");
2873         }
2874
2875         return 0;
2876 }
2877
2878 /**
2879  * amdgpu_device_ip_fini - run fini for hardware IPs
2880  *
2881  * @adev: amdgpu_device pointer
2882  *
2883  * Main teardown pass for hardware IPs.  The list of all the hardware
2884  * IPs that make up the asic is walked and the hw_fini and sw_fini callbacks
2885  * are run.  hw_fini tears down the hardware associated with each IP
2886  * and sw_fini tears down any software state associated with each IP.
2887  * Returns 0 on success, negative error code on failure.
2888  */
2889 static int amdgpu_device_ip_fini(struct amdgpu_device *adev)
2890 {
2891         int i, r;
2892
2893         if (amdgpu_sriov_vf(adev) && adev->virt.ras_init_done)
2894                 amdgpu_virt_release_ras_err_handler_data(adev);
2895
2896         if (adev->gmc.xgmi.num_physical_nodes > 1)
2897                 amdgpu_xgmi_remove_device(adev);
2898
2899         amdgpu_amdkfd_device_fini_sw(adev);
2900
2901         for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
2902                 if (!adev->ip_blocks[i].status.sw)
2903                         continue;
2904
2905                 if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC) {
2906                         amdgpu_ucode_free_bo(adev);
2907                         amdgpu_free_static_csa(&adev->virt.csa_obj);
2908                         amdgpu_device_wb_fini(adev);
2909                         amdgpu_device_mem_scratch_fini(adev);
2910                         amdgpu_ib_pool_fini(adev);
2911                 }
2912
2913                 r = adev->ip_blocks[i].version->funcs->sw_fini((void *)adev);
2914                 /* XXX handle errors */
2915                 if (r) {
2916                         DRM_DEBUG("sw_fini of IP block <%s> failed %d\n",
2917                                   adev->ip_blocks[i].version->funcs->name, r);
2918                 }
2919                 adev->ip_blocks[i].status.sw = false;
2920                 adev->ip_blocks[i].status.valid = false;
2921         }
2922
2923         for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
2924                 if (!adev->ip_blocks[i].status.late_initialized)
2925                         continue;
2926                 if (adev->ip_blocks[i].version->funcs->late_fini)
2927                         adev->ip_blocks[i].version->funcs->late_fini((void *)adev);
2928                 adev->ip_blocks[i].status.late_initialized = false;
2929         }
2930
2931         amdgpu_ras_fini(adev);
2932
2933         return 0;
2934 }
2935
2936 /**
2937  * amdgpu_device_delayed_init_work_handler - work handler for IB tests
2938  *
2939  * @work: work_struct.
2940  */
2941 static void amdgpu_device_delayed_init_work_handler(struct work_struct *work)
2942 {
2943         struct amdgpu_device *adev =
2944                 container_of(work, struct amdgpu_device, delayed_init_work.work);
2945         int r;
2946
2947         r = amdgpu_ib_ring_tests(adev);
2948         if (r)
2949                 DRM_ERROR("ib ring test failed (%d).\n", r);
2950 }
2951
2952 static void amdgpu_device_delay_enable_gfx_off(struct work_struct *work)
2953 {
2954         struct amdgpu_device *adev =
2955                 container_of(work, struct amdgpu_device, gfx.gfx_off_delay_work.work);
2956
2957         WARN_ON_ONCE(adev->gfx.gfx_off_state);
2958         WARN_ON_ONCE(adev->gfx.gfx_off_req_count);
2959
2960         if (!amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_GFX, true))
2961                 adev->gfx.gfx_off_state = true;
2962 }
2963
2964 /**
2965  * amdgpu_device_ip_suspend_phase1 - run suspend for hardware IPs (phase 1)
2966  *
2967  * @adev: amdgpu_device pointer
2968  *
2969  * Main suspend function for hardware IPs.  The list of all the hardware
2970  * IPs that make up the asic is walked, clockgating is disabled and the
2971  * suspend callbacks are run.  suspend puts the hardware and software state
2972  * in each IP into a state suitable for suspend.
2973  * Returns 0 on success, negative error code on failure.
2974  */
2975 static int amdgpu_device_ip_suspend_phase1(struct amdgpu_device *adev)
2976 {
2977         int i, r;
2978
2979         amdgpu_device_set_pg_state(adev, AMD_PG_STATE_UNGATE);
2980         amdgpu_device_set_cg_state(adev, AMD_CG_STATE_UNGATE);
2981
2982         /*
2983          * Per PMFW team's suggestion, driver needs to handle gfxoff
2984          * and df cstate features disablement for gpu reset(e.g. Mode1Reset)
2985          * scenario. Add the missing df cstate disablement here.
2986          */
2987         if (amdgpu_dpm_set_df_cstate(adev, DF_CSTATE_DISALLOW))
2988                 dev_warn(adev->dev, "Failed to disallow df cstate");
2989
2990         for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
2991                 if (!adev->ip_blocks[i].status.valid)
2992                         continue;
2993
2994                 /* displays are handled separately */
2995                 if (adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_DCE)
2996                         continue;
2997
2998                 /* XXX handle errors */
2999                 r = adev->ip_blocks[i].version->funcs->suspend(adev);
3000                 /* XXX handle errors */
3001                 if (r) {
3002                         DRM_ERROR("suspend of IP block <%s> failed %d\n",
3003                                   adev->ip_blocks[i].version->funcs->name, r);
3004                         return r;
3005                 }
3006
3007                 adev->ip_blocks[i].status.hw = false;
3008         }
3009
3010         return 0;
3011 }
3012
3013 /**
3014  * amdgpu_device_ip_suspend_phase2 - run suspend for hardware IPs (phase 2)
3015  *
3016  * @adev: amdgpu_device pointer
3017  *
3018  * Main suspend function for hardware IPs.  The list of all the hardware
3019  * IPs that make up the asic is walked, clockgating is disabled and the
3020  * suspend callbacks are run.  suspend puts the hardware and software state
3021  * in each IP into a state suitable for suspend.
3022  * Returns 0 on success, negative error code on failure.
3023  */
3024 static int amdgpu_device_ip_suspend_phase2(struct amdgpu_device *adev)
3025 {
3026         int i, r;
3027
3028         if (adev->in_s0ix)
3029                 amdgpu_dpm_gfx_state_change(adev, sGpuChangeState_D3Entry);
3030
3031         for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
3032                 if (!adev->ip_blocks[i].status.valid)
3033                         continue;
3034                 /* displays are handled in phase1 */
3035                 if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_DCE)
3036                         continue;
3037                 /* PSP lost connection when err_event_athub occurs */
3038                 if (amdgpu_ras_intr_triggered() &&
3039                     adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_PSP) {
3040                         adev->ip_blocks[i].status.hw = false;
3041                         continue;
3042                 }
3043
3044                 /* skip unnecessary suspend if we do not initialize them yet */
3045                 if (adev->gmc.xgmi.pending_reset &&
3046                     !(adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC ||
3047                       adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_SMC ||
3048                       adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_COMMON ||
3049                       adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_IH)) {
3050                         adev->ip_blocks[i].status.hw = false;
3051                         continue;
3052                 }
3053
3054                 /* skip suspend of gfx/mes and psp for S0ix
3055                  * gfx is in gfxoff state, so on resume it will exit gfxoff just
3056                  * like at runtime. PSP is also part of the always on hardware
3057                  * so no need to suspend it.
3058                  */
3059                 if (adev->in_s0ix &&
3060                     (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_PSP ||
3061                      adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GFX ||
3062                      adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_MES))
3063                         continue;
3064
3065                 /* SDMA 5.x+ is part of GFX power domain so it's covered by GFXOFF */
3066                 if (adev->in_s0ix &&
3067                     (adev->ip_versions[SDMA0_HWIP][0] >= IP_VERSION(5, 0, 0)) &&
3068                     (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_SDMA))
3069                         continue;
3070
3071                 /* Once swPSP provides the IMU, RLC FW binaries to TOS during cold-boot.
3072                  * These are in TMR, hence are expected to be reused by PSP-TOS to reload
3073                  * from this location and RLC Autoload automatically also gets loaded
3074                  * from here based on PMFW -> PSP message during re-init sequence.
3075                  * Therefore, the psp suspend & resume should be skipped to avoid destroy
3076                  * the TMR and reload FWs again for IMU enabled APU ASICs.
3077                  */
3078                 if (amdgpu_in_reset(adev) &&
3079                     (adev->flags & AMD_IS_APU) && adev->gfx.imu.funcs &&
3080                     adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_PSP)
3081                         continue;
3082
3083                 /* XXX handle errors */
3084                 r = adev->ip_blocks[i].version->funcs->suspend(adev);
3085                 /* XXX handle errors */
3086                 if (r) {
3087                         DRM_ERROR("suspend of IP block <%s> failed %d\n",
3088                                   adev->ip_blocks[i].version->funcs->name, r);
3089                 }
3090                 adev->ip_blocks[i].status.hw = false;
3091                 /* handle putting the SMC in the appropriate state */
3092                 if(!amdgpu_sriov_vf(adev)){
3093                         if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_SMC) {
3094                                 r = amdgpu_dpm_set_mp1_state(adev, adev->mp1_state);
3095                                 if (r) {
3096                                         DRM_ERROR("SMC failed to set mp1 state %d, %d\n",
3097                                                         adev->mp1_state, r);
3098                                         return r;
3099                                 }
3100                         }
3101                 }
3102         }
3103
3104         return 0;
3105 }
3106
3107 /**
3108  * amdgpu_device_ip_suspend - run suspend for hardware IPs
3109  *
3110  * @adev: amdgpu_device pointer
3111  *
3112  * Main suspend function for hardware IPs.  The list of all the hardware
3113  * IPs that make up the asic is walked, clockgating is disabled and the
3114  * suspend callbacks are run.  suspend puts the hardware and software state
3115  * in each IP into a state suitable for suspend.
3116  * Returns 0 on success, negative error code on failure.
3117  */
3118 int amdgpu_device_ip_suspend(struct amdgpu_device *adev)
3119 {
3120         int r;
3121
3122         if (amdgpu_sriov_vf(adev)) {
3123                 amdgpu_virt_fini_data_exchange(adev);
3124                 amdgpu_virt_request_full_gpu(adev, false);
3125         }
3126
3127         r = amdgpu_device_ip_suspend_phase1(adev);
3128         if (r)
3129                 return r;
3130         r = amdgpu_device_ip_suspend_phase2(adev);
3131
3132         if (amdgpu_sriov_vf(adev))
3133                 amdgpu_virt_release_full_gpu(adev, false);
3134
3135         return r;
3136 }
3137
3138 static int amdgpu_device_ip_reinit_early_sriov(struct amdgpu_device *adev)
3139 {
3140         int i, r;
3141
3142         static enum amd_ip_block_type ip_order[] = {
3143                 AMD_IP_BLOCK_TYPE_COMMON,
3144                 AMD_IP_BLOCK_TYPE_GMC,
3145                 AMD_IP_BLOCK_TYPE_PSP,
3146                 AMD_IP_BLOCK_TYPE_IH,
3147         };
3148
3149         for (i = 0; i < adev->num_ip_blocks; i++) {
3150                 int j;
3151                 struct amdgpu_ip_block *block;
3152
3153                 block = &adev->ip_blocks[i];
3154                 block->status.hw = false;
3155
3156                 for (j = 0; j < ARRAY_SIZE(ip_order); j++) {
3157
3158                         if (block->version->type != ip_order[j] ||
3159                                 !block->status.valid)
3160                                 continue;
3161
3162                         r = block->version->funcs->hw_init(adev);
3163                         DRM_INFO("RE-INIT-early: %s %s\n", block->version->funcs->name, r?"failed":"succeeded");
3164                         if (r)
3165                                 return r;
3166                         block->status.hw = true;
3167                 }
3168         }
3169
3170         return 0;
3171 }
3172
3173 static int amdgpu_device_ip_reinit_late_sriov(struct amdgpu_device *adev)
3174 {
3175         int i, r;
3176
3177         static enum amd_ip_block_type ip_order[] = {
3178                 AMD_IP_BLOCK_TYPE_SMC,
3179                 AMD_IP_BLOCK_TYPE_DCE,
3180                 AMD_IP_BLOCK_TYPE_GFX,
3181                 AMD_IP_BLOCK_TYPE_SDMA,
3182                 AMD_IP_BLOCK_TYPE_MES,
3183                 AMD_IP_BLOCK_TYPE_UVD,
3184                 AMD_IP_BLOCK_TYPE_VCE,
3185                 AMD_IP_BLOCK_TYPE_VCN,
3186                 AMD_IP_BLOCK_TYPE_JPEG
3187         };
3188
3189         for (i = 0; i < ARRAY_SIZE(ip_order); i++) {
3190                 int j;
3191                 struct amdgpu_ip_block *block;
3192
3193                 for (j = 0; j < adev->num_ip_blocks; j++) {
3194                         block = &adev->ip_blocks[j];
3195
3196                         if (block->version->type != ip_order[i] ||
3197                                 !block->status.valid ||
3198                                 block->status.hw)
3199                                 continue;
3200
3201                         if (block->version->type == AMD_IP_BLOCK_TYPE_SMC)
3202                                 r = block->version->funcs->resume(adev);
3203                         else
3204                                 r = block->version->funcs->hw_init(adev);
3205
3206                         DRM_INFO("RE-INIT-late: %s %s\n", block->version->funcs->name, r?"failed":"succeeded");
3207                         if (r)
3208                                 return r;
3209                         block->status.hw = true;
3210                 }
3211         }
3212
3213         return 0;
3214 }
3215
3216 /**
3217  * amdgpu_device_ip_resume_phase1 - run resume for hardware IPs
3218  *
3219  * @adev: amdgpu_device pointer
3220  *
3221  * First resume function for hardware IPs.  The list of all the hardware
3222  * IPs that make up the asic is walked and the resume callbacks are run for
3223  * COMMON, GMC, and IH.  resume puts the hardware into a functional state
3224  * after a suspend and updates the software state as necessary.  This
3225  * function is also used for restoring the GPU after a GPU reset.
3226  * Returns 0 on success, negative error code on failure.
3227  */
3228 static int amdgpu_device_ip_resume_phase1(struct amdgpu_device *adev)
3229 {
3230         int i, r;
3231
3232         for (i = 0; i < adev->num_ip_blocks; i++) {
3233                 if (!adev->ip_blocks[i].status.valid || adev->ip_blocks[i].status.hw)
3234                         continue;
3235                 if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_COMMON ||
3236                     adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC ||
3237                     adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_IH ||
3238                     (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_PSP && amdgpu_sriov_vf(adev))) {
3239
3240                         r = adev->ip_blocks[i].version->funcs->resume(adev);
3241                         if (r) {
3242                                 DRM_ERROR("resume of IP block <%s> failed %d\n",
3243                                           adev->ip_blocks[i].version->funcs->name, r);
3244                                 return r;
3245                         }
3246                         adev->ip_blocks[i].status.hw = true;
3247                 }
3248         }
3249
3250         return 0;
3251 }
3252
3253 /**
3254  * amdgpu_device_ip_resume_phase2 - run resume for hardware IPs
3255  *
3256  * @adev: amdgpu_device pointer
3257  *
3258  * First resume function for hardware IPs.  The list of all the hardware
3259  * IPs that make up the asic is walked and the resume callbacks are run for
3260  * all blocks except COMMON, GMC, and IH.  resume puts the hardware into a
3261  * functional state after a suspend and updates the software state as
3262  * necessary.  This function is also used for restoring the GPU after a GPU
3263  * reset.
3264  * Returns 0 on success, negative error code on failure.
3265  */
3266 static int amdgpu_device_ip_resume_phase2(struct amdgpu_device *adev)
3267 {
3268         int i, r;
3269
3270         for (i = 0; i < adev->num_ip_blocks; i++) {
3271                 if (!adev->ip_blocks[i].status.valid || adev->ip_blocks[i].status.hw)
3272                         continue;
3273                 if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_COMMON ||
3274                     adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC ||
3275                     adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_IH ||
3276                     adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_PSP)
3277                         continue;
3278                 r = adev->ip_blocks[i].version->funcs->resume(adev);
3279                 if (r) {
3280                         DRM_ERROR("resume of IP block <%s> failed %d\n",
3281                                   adev->ip_blocks[i].version->funcs->name, r);
3282                         return r;
3283                 }
3284                 adev->ip_blocks[i].status.hw = true;
3285         }
3286
3287         return 0;
3288 }
3289
3290 /**
3291  * amdgpu_device_ip_resume - run resume for hardware IPs
3292  *
3293  * @adev: amdgpu_device pointer
3294  *
3295  * Main resume function for hardware IPs.  The hardware IPs
3296  * are split into two resume functions because they are
3297  * are also used in in recovering from a GPU reset and some additional
3298  * steps need to be take between them.  In this case (S3/S4) they are
3299  * run sequentially.
3300  * Returns 0 on success, negative error code on failure.
3301  */
3302 static int amdgpu_device_ip_resume(struct amdgpu_device *adev)
3303 {
3304         int r;
3305
3306         if (!adev->in_s0ix) {
3307                 r = amdgpu_amdkfd_resume_iommu(adev);
3308                 if (r)
3309                         return r;
3310         }
3311
3312         r = amdgpu_device_ip_resume_phase1(adev);
3313         if (r)
3314                 return r;
3315
3316         r = amdgpu_device_fw_loading(adev);
3317         if (r)
3318                 return r;
3319
3320         r = amdgpu_device_ip_resume_phase2(adev);
3321
3322         return r;
3323 }
3324
3325 /**
3326  * amdgpu_device_detect_sriov_bios - determine if the board supports SR-IOV
3327  *
3328  * @adev: amdgpu_device pointer
3329  *
3330  * Query the VBIOS data tables to determine if the board supports SR-IOV.
3331  */
3332 static void amdgpu_device_detect_sriov_bios(struct amdgpu_device *adev)
3333 {
3334         if (amdgpu_sriov_vf(adev)) {
3335                 if (adev->is_atom_fw) {
3336                         if (amdgpu_atomfirmware_gpu_virtualization_supported(adev))
3337                                 adev->virt.caps |= AMDGPU_SRIOV_CAPS_SRIOV_VBIOS;
3338                 } else {
3339                         if (amdgpu_atombios_has_gpu_virtualization_table(adev))
3340                                 adev->virt.caps |= AMDGPU_SRIOV_CAPS_SRIOV_VBIOS;
3341                 }
3342
3343                 if (!(adev->virt.caps & AMDGPU_SRIOV_CAPS_SRIOV_VBIOS))
3344                         amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_NO_VBIOS, 0, 0);
3345         }
3346 }
3347
3348 /**
3349  * amdgpu_device_asic_has_dc_support - determine if DC supports the asic
3350  *
3351  * @asic_type: AMD asic type
3352  *
3353  * Check if there is DC (new modesetting infrastructre) support for an asic.
3354  * returns true if DC has support, false if not.
3355  */
3356 bool amdgpu_device_asic_has_dc_support(enum amd_asic_type asic_type)
3357 {
3358         switch (asic_type) {
3359 #ifdef CONFIG_DRM_AMDGPU_SI
3360         case CHIP_HAINAN:
3361 #endif
3362         case CHIP_TOPAZ:
3363                 /* chips with no display hardware */
3364                 return false;
3365 #if defined(CONFIG_DRM_AMD_DC)
3366         case CHIP_TAHITI:
3367         case CHIP_PITCAIRN:
3368         case CHIP_VERDE:
3369         case CHIP_OLAND:
3370                 /*
3371                  * We have systems in the wild with these ASICs that require
3372                  * LVDS and VGA support which is not supported with DC.
3373                  *
3374                  * Fallback to the non-DC driver here by default so as not to
3375                  * cause regressions.
3376                  */
3377 #if defined(CONFIG_DRM_AMD_DC_SI)
3378                 return amdgpu_dc > 0;
3379 #else
3380                 return false;
3381 #endif
3382         case CHIP_BONAIRE:
3383         case CHIP_KAVERI:
3384         case CHIP_KABINI:
3385         case CHIP_MULLINS:
3386                 /*
3387                  * We have systems in the wild with these ASICs that require
3388                  * VGA support which is not supported with DC.
3389                  *
3390                  * Fallback to the non-DC driver here by default so as not to
3391                  * cause regressions.
3392                  */
3393                 return amdgpu_dc > 0;
3394         default:
3395                 return amdgpu_dc != 0;
3396 #else
3397         default:
3398                 if (amdgpu_dc > 0)
3399                         DRM_INFO_ONCE("Display Core has been requested via kernel parameter "
3400                                          "but isn't supported by ASIC, ignoring\n");
3401                 return false;
3402 #endif
3403         }
3404 }
3405
3406 /**
3407  * amdgpu_device_has_dc_support - check if dc is supported
3408  *
3409  * @adev: amdgpu_device pointer
3410  *
3411  * Returns true for supported, false for not supported
3412  */
3413 bool amdgpu_device_has_dc_support(struct amdgpu_device *adev)
3414 {
3415         if (adev->enable_virtual_display ||
3416             (adev->harvest_ip_mask & AMD_HARVEST_IP_DMU_MASK))
3417                 return false;
3418
3419         return amdgpu_device_asic_has_dc_support(adev->asic_type);
3420 }
3421
3422 static void amdgpu_device_xgmi_reset_func(struct work_struct *__work)
3423 {
3424         struct amdgpu_device *adev =
3425                 container_of(__work, struct amdgpu_device, xgmi_reset_work);
3426         struct amdgpu_hive_info *hive = amdgpu_get_xgmi_hive(adev);
3427
3428         /* It's a bug to not have a hive within this function */
3429         if (WARN_ON(!hive))
3430                 return;
3431
3432         /*
3433          * Use task barrier to synchronize all xgmi reset works across the
3434          * hive. task_barrier_enter and task_barrier_exit will block
3435          * until all the threads running the xgmi reset works reach
3436          * those points. task_barrier_full will do both blocks.
3437          */
3438         if (amdgpu_asic_reset_method(adev) == AMD_RESET_METHOD_BACO) {
3439
3440                 task_barrier_enter(&hive->tb);
3441                 adev->asic_reset_res = amdgpu_device_baco_enter(adev_to_drm(adev));
3442
3443                 if (adev->asic_reset_res)
3444                         goto fail;
3445
3446                 task_barrier_exit(&hive->tb);
3447                 adev->asic_reset_res = amdgpu_device_baco_exit(adev_to_drm(adev));
3448
3449                 if (adev->asic_reset_res)
3450                         goto fail;
3451
3452                 if (adev->mmhub.ras && adev->mmhub.ras->ras_block.hw_ops &&
3453                     adev->mmhub.ras->ras_block.hw_ops->reset_ras_error_count)
3454                         adev->mmhub.ras->ras_block.hw_ops->reset_ras_error_count(adev);
3455         } else {
3456
3457                 task_barrier_full(&hive->tb);
3458                 adev->asic_reset_res =  amdgpu_asic_reset(adev);
3459         }
3460
3461 fail:
3462         if (adev->asic_reset_res)
3463                 DRM_WARN("ASIC reset failed with error, %d for drm dev, %s",
3464                          adev->asic_reset_res, adev_to_drm(adev)->unique);
3465         amdgpu_put_xgmi_hive(hive);
3466 }
3467
3468 static int amdgpu_device_get_job_timeout_settings(struct amdgpu_device *adev)
3469 {
3470         char *input = amdgpu_lockup_timeout;
3471         char *timeout_setting = NULL;
3472         int index = 0;
3473         long timeout;
3474         int ret = 0;
3475
3476         /*
3477          * By default timeout for non compute jobs is 10000
3478          * and 60000 for compute jobs.
3479          * In SR-IOV or passthrough mode, timeout for compute
3480          * jobs are 60000 by default.
3481          */
3482         adev->gfx_timeout = msecs_to_jiffies(10000);
3483         adev->sdma_timeout = adev->video_timeout = adev->gfx_timeout;
3484         if (amdgpu_sriov_vf(adev))
3485                 adev->compute_timeout = amdgpu_sriov_is_pp_one_vf(adev) ?
3486                                         msecs_to_jiffies(60000) : msecs_to_jiffies(10000);
3487         else
3488                 adev->compute_timeout =  msecs_to_jiffies(60000);
3489
3490         if (strnlen(input, AMDGPU_MAX_TIMEOUT_PARAM_LENGTH)) {
3491                 while ((timeout_setting = strsep(&input, ",")) &&
3492                                 strnlen(timeout_setting, AMDGPU_MAX_TIMEOUT_PARAM_LENGTH)) {
3493                         ret = kstrtol(timeout_setting, 0, &timeout);
3494                         if (ret)
3495                                 return ret;
3496
3497                         if (timeout == 0) {
3498                                 index++;
3499                                 continue;
3500                         } else if (timeout < 0) {
3501                                 timeout = MAX_SCHEDULE_TIMEOUT;
3502                                 dev_warn(adev->dev, "lockup timeout disabled");
3503                                 add_taint(TAINT_SOFTLOCKUP, LOCKDEP_STILL_OK);
3504                         } else {
3505                                 timeout = msecs_to_jiffies(timeout);
3506                         }
3507
3508                         switch (index++) {
3509                         case 0:
3510                                 adev->gfx_timeout = timeout;
3511                                 break;
3512                         case 1:
3513                                 adev->compute_timeout = timeout;
3514                                 break;
3515                         case 2:
3516                                 adev->sdma_timeout = timeout;
3517                                 break;
3518                         case 3:
3519                                 adev->video_timeout = timeout;
3520                                 break;
3521                         default:
3522                                 break;
3523                         }
3524                 }
3525                 /*
3526                  * There is only one value specified and
3527                  * it should apply to all non-compute jobs.
3528                  */
3529                 if (index == 1) {
3530                         adev->sdma_timeout = adev->video_timeout = adev->gfx_timeout;
3531                         if (amdgpu_sriov_vf(adev) || amdgpu_passthrough(adev))
3532                                 adev->compute_timeout = adev->gfx_timeout;
3533                 }
3534         }
3535
3536         return ret;
3537 }
3538
3539 /**
3540  * amdgpu_device_check_iommu_direct_map - check if RAM direct mapped to GPU
3541  *
3542  * @adev: amdgpu_device pointer
3543  *
3544  * RAM direct mapped to GPU if IOMMU is not enabled or is pass through mode
3545  */
3546 static void amdgpu_device_check_iommu_direct_map(struct amdgpu_device *adev)
3547 {
3548         struct iommu_domain *domain;
3549
3550         domain = iommu_get_domain_for_dev(adev->dev);
3551         if (!domain || domain->type == IOMMU_DOMAIN_IDENTITY)
3552                 adev->ram_is_direct_mapped = true;
3553 }
3554
3555 static const struct attribute *amdgpu_dev_attributes[] = {
3556         &dev_attr_product_name.attr,
3557         &dev_attr_product_number.attr,
3558         &dev_attr_serial_number.attr,
3559         &dev_attr_pcie_replay_count.attr,
3560         NULL
3561 };
3562
3563 /**
3564  * amdgpu_device_init - initialize the driver
3565  *
3566  * @adev: amdgpu_device pointer
3567  * @flags: driver flags
3568  *
3569  * Initializes the driver info and hw (all asics).
3570  * Returns 0 for success or an error on failure.
3571  * Called at driver startup.
3572  */
3573 int amdgpu_device_init(struct amdgpu_device *adev,
3574                        uint32_t flags)
3575 {
3576         struct drm_device *ddev = adev_to_drm(adev);
3577         struct pci_dev *pdev = adev->pdev;
3578         int r, i;
3579         bool px = false;
3580         u32 max_MBps;
3581         int tmp;
3582
3583         adev->shutdown = false;
3584         adev->flags = flags;
3585
3586         if (amdgpu_force_asic_type >= 0 && amdgpu_force_asic_type < CHIP_LAST)
3587                 adev->asic_type = amdgpu_force_asic_type;
3588         else
3589                 adev->asic_type = flags & AMD_ASIC_MASK;
3590
3591         adev->usec_timeout = AMDGPU_MAX_USEC_TIMEOUT;
3592         if (amdgpu_emu_mode == 1)
3593                 adev->usec_timeout *= 10;
3594         adev->gmc.gart_size = 512 * 1024 * 1024;
3595         adev->accel_working = false;
3596         adev->num_rings = 0;
3597         RCU_INIT_POINTER(adev->gang_submit, dma_fence_get_stub());
3598         adev->mman.buffer_funcs = NULL;
3599         adev->mman.buffer_funcs_ring = NULL;
3600         adev->vm_manager.vm_pte_funcs = NULL;
3601         adev->vm_manager.vm_pte_num_scheds = 0;
3602         adev->gmc.gmc_funcs = NULL;
3603         adev->harvest_ip_mask = 0x0;
3604         adev->fence_context = dma_fence_context_alloc(AMDGPU_MAX_RINGS);
3605         bitmap_zero(adev->gfx.pipe_reserve_bitmap, AMDGPU_MAX_COMPUTE_QUEUES);
3606
3607         adev->smc_rreg = &amdgpu_invalid_rreg;
3608         adev->smc_wreg = &amdgpu_invalid_wreg;
3609         adev->pcie_rreg = &amdgpu_invalid_rreg;
3610         adev->pcie_wreg = &amdgpu_invalid_wreg;
3611         adev->pciep_rreg = &amdgpu_invalid_rreg;
3612         adev->pciep_wreg = &amdgpu_invalid_wreg;
3613         adev->pcie_rreg64 = &amdgpu_invalid_rreg64;
3614         adev->pcie_wreg64 = &amdgpu_invalid_wreg64;
3615         adev->uvd_ctx_rreg = &amdgpu_invalid_rreg;
3616         adev->uvd_ctx_wreg = &amdgpu_invalid_wreg;
3617         adev->didt_rreg = &amdgpu_invalid_rreg;
3618         adev->didt_wreg = &amdgpu_invalid_wreg;
3619         adev->gc_cac_rreg = &amdgpu_invalid_rreg;
3620         adev->gc_cac_wreg = &amdgpu_invalid_wreg;
3621         adev->audio_endpt_rreg = &amdgpu_block_invalid_rreg;
3622         adev->audio_endpt_wreg = &amdgpu_block_invalid_wreg;
3623
3624         DRM_INFO("initializing kernel modesetting (%s 0x%04X:0x%04X 0x%04X:0x%04X 0x%02X).\n",
3625                  amdgpu_asic_name[adev->asic_type], pdev->vendor, pdev->device,
3626                  pdev->subsystem_vendor, pdev->subsystem_device, pdev->revision);
3627
3628         /* mutex initialization are all done here so we
3629          * can recall function without having locking issues */
3630         mutex_init(&adev->firmware.mutex);
3631         mutex_init(&adev->pm.mutex);
3632         mutex_init(&adev->gfx.gpu_clock_mutex);
3633         mutex_init(&adev->srbm_mutex);
3634         mutex_init(&adev->gfx.pipe_reserve_mutex);
3635         mutex_init(&adev->gfx.gfx_off_mutex);
3636         mutex_init(&adev->grbm_idx_mutex);
3637         mutex_init(&adev->mn_lock);
3638         mutex_init(&adev->virt.vf_errors.lock);
3639         hash_init(adev->mn_hash);
3640         mutex_init(&adev->psp.mutex);
3641         mutex_init(&adev->notifier_lock);
3642         mutex_init(&adev->pm.stable_pstate_ctx_lock);
3643         mutex_init(&adev->benchmark_mutex);
3644
3645         amdgpu_device_init_apu_flags(adev);
3646
3647         r = amdgpu_device_check_arguments(adev);
3648         if (r)
3649                 return r;
3650
3651         spin_lock_init(&adev->mmio_idx_lock);
3652         spin_lock_init(&adev->smc_idx_lock);
3653         spin_lock_init(&adev->pcie_idx_lock);
3654         spin_lock_init(&adev->uvd_ctx_idx_lock);
3655         spin_lock_init(&adev->didt_idx_lock);
3656         spin_lock_init(&adev->gc_cac_idx_lock);
3657         spin_lock_init(&adev->se_cac_idx_lock);
3658         spin_lock_init(&adev->audio_endpt_idx_lock);
3659         spin_lock_init(&adev->mm_stats.lock);
3660
3661         INIT_LIST_HEAD(&adev->shadow_list);
3662         mutex_init(&adev->shadow_list_lock);
3663
3664         INIT_LIST_HEAD(&adev->reset_list);
3665
3666         INIT_LIST_HEAD(&adev->ras_list);
3667
3668         INIT_DELAYED_WORK(&adev->delayed_init_work,
3669                           amdgpu_device_delayed_init_work_handler);
3670         INIT_DELAYED_WORK(&adev->gfx.gfx_off_delay_work,
3671                           amdgpu_device_delay_enable_gfx_off);
3672
3673         INIT_WORK(&adev->xgmi_reset_work, amdgpu_device_xgmi_reset_func);
3674
3675         adev->gfx.gfx_off_req_count = 1;
3676         adev->gfx.gfx_off_residency = 0;
3677         adev->gfx.gfx_off_entrycount = 0;
3678         adev->pm.ac_power = power_supply_is_system_supplied() > 0;
3679
3680         atomic_set(&adev->throttling_logging_enabled, 1);
3681         /*
3682          * If throttling continues, logging will be performed every minute
3683          * to avoid log flooding. "-1" is subtracted since the thermal
3684          * throttling interrupt comes every second. Thus, the total logging
3685          * interval is 59 seconds(retelimited printk interval) + 1(waiting
3686          * for throttling interrupt) = 60 seconds.
3687          */
3688         ratelimit_state_init(&adev->throttling_logging_rs, (60 - 1) * HZ, 1);
3689         ratelimit_set_flags(&adev->throttling_logging_rs, RATELIMIT_MSG_ON_RELEASE);
3690
3691         /* Registers mapping */
3692         /* TODO: block userspace mapping of io register */
3693         if (adev->asic_type >= CHIP_BONAIRE) {
3694                 adev->rmmio_base = pci_resource_start(adev->pdev, 5);
3695                 adev->rmmio_size = pci_resource_len(adev->pdev, 5);
3696         } else {
3697                 adev->rmmio_base = pci_resource_start(adev->pdev, 2);
3698                 adev->rmmio_size = pci_resource_len(adev->pdev, 2);
3699         }
3700
3701         for (i = 0; i < AMD_IP_BLOCK_TYPE_NUM; i++)
3702                 atomic_set(&adev->pm.pwr_state[i], POWER_STATE_UNKNOWN);
3703
3704         adev->rmmio = ioremap(adev->rmmio_base, adev->rmmio_size);
3705         if (adev->rmmio == NULL) {
3706                 return -ENOMEM;
3707         }
3708         DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)adev->rmmio_base);
3709         DRM_INFO("register mmio size: %u\n", (unsigned)adev->rmmio_size);
3710
3711         amdgpu_device_get_pcie_info(adev);
3712
3713         if (amdgpu_mcbp)
3714                 DRM_INFO("MCBP is enabled\n");
3715
3716         /*
3717          * Reset domain needs to be present early, before XGMI hive discovered
3718          * (if any) and intitialized to use reset sem and in_gpu reset flag
3719          * early on during init and before calling to RREG32.
3720          */
3721         adev->reset_domain = amdgpu_reset_create_reset_domain(SINGLE_DEVICE, "amdgpu-reset-dev");
3722         if (!adev->reset_domain)
3723                 return -ENOMEM;
3724
3725         /* detect hw virtualization here */
3726         amdgpu_detect_virtualization(adev);
3727
3728         r = amdgpu_device_get_job_timeout_settings(adev);
3729         if (r) {
3730                 dev_err(adev->dev, "invalid lockup_timeout parameter syntax\n");
3731                 return r;
3732         }
3733
3734         /* early init functions */
3735         r = amdgpu_device_ip_early_init(adev);
3736         if (r)
3737                 return r;
3738
3739         /* Get rid of things like offb */
3740         r = drm_aperture_remove_conflicting_pci_framebuffers(adev->pdev, &amdgpu_kms_driver);
3741         if (r)
3742                 return r;
3743
3744         /* Enable TMZ based on IP_VERSION */
3745         amdgpu_gmc_tmz_set(adev);
3746
3747         amdgpu_gmc_noretry_set(adev);
3748         /* Need to get xgmi info early to decide the reset behavior*/
3749         if (adev->gmc.xgmi.supported) {
3750                 r = adev->gfxhub.funcs->get_xgmi_info(adev);
3751                 if (r)
3752                         return r;
3753         }
3754
3755         /* enable PCIE atomic ops */
3756         if (amdgpu_sriov_vf(adev))
3757                 adev->have_atomics_support = ((struct amd_sriov_msg_pf2vf_info *)
3758                         adev->virt.fw_reserve.p_pf2vf)->pcie_atomic_ops_support_flags ==
3759                         (PCI_EXP_DEVCAP2_ATOMIC_COMP32 | PCI_EXP_DEVCAP2_ATOMIC_COMP64);
3760         /* APUs w/ gfx9 onwards doesn't reply on PCIe atomics, rather it is a
3761          * internal path natively support atomics, set have_atomics_support to true.
3762          */
3763         else if ((adev->flags & AMD_IS_APU) &&
3764                 (adev->ip_versions[GC_HWIP][0] > IP_VERSION(9, 0, 0)))
3765                 adev->have_atomics_support = true;
3766         else
3767                 adev->have_atomics_support =
3768                         !pci_enable_atomic_ops_to_root(adev->pdev,
3769                                           PCI_EXP_DEVCAP2_ATOMIC_COMP32 |
3770                                           PCI_EXP_DEVCAP2_ATOMIC_COMP64);
3771         if (!adev->have_atomics_support)
3772                 dev_info(adev->dev, "PCIE atomic ops is not supported\n");
3773
3774         /* doorbell bar mapping and doorbell index init*/
3775         amdgpu_device_doorbell_init(adev);
3776
3777         if (amdgpu_emu_mode == 1) {
3778                 /* post the asic on emulation mode */
3779                 emu_soc_asic_init(adev);
3780                 goto fence_driver_init;
3781         }
3782
3783         amdgpu_reset_init(adev);
3784
3785         /* detect if we are with an SRIOV vbios */
3786         amdgpu_device_detect_sriov_bios(adev);
3787
3788         /* check if we need to reset the asic
3789          *  E.g., driver was not cleanly unloaded previously, etc.
3790          */
3791         if (!amdgpu_sriov_vf(adev) && amdgpu_asic_need_reset_on_init(adev)) {
3792                 if (adev->gmc.xgmi.num_physical_nodes) {
3793                         dev_info(adev->dev, "Pending hive reset.\n");
3794                         adev->gmc.xgmi.pending_reset = true;
3795                         /* Only need to init necessary block for SMU to handle the reset */
3796                         for (i = 0; i < adev->num_ip_blocks; i++) {
3797                                 if (!adev->ip_blocks[i].status.valid)
3798                                         continue;
3799                                 if (!(adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC ||
3800                                       adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_COMMON ||
3801                                       adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_IH ||
3802                                       adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_SMC)) {
3803                                         DRM_DEBUG("IP %s disabled for hw_init.\n",
3804                                                 adev->ip_blocks[i].version->funcs->name);
3805                                         adev->ip_blocks[i].status.hw = true;
3806                                 }
3807                         }
3808                 } else {
3809                         tmp = amdgpu_reset_method;
3810                         /* It should do a default reset when loading or reloading the driver,
3811                          * regardless of the module parameter reset_method.
3812                          */
3813                         amdgpu_reset_method = AMD_RESET_METHOD_NONE;
3814                         r = amdgpu_asic_reset(adev);
3815                         amdgpu_reset_method = tmp;
3816                         if (r) {
3817                                 dev_err(adev->dev, "asic reset on init failed\n");
3818                                 goto failed;
3819                         }
3820                 }
3821         }
3822
3823         /* Post card if necessary */
3824         if (amdgpu_device_need_post(adev)) {
3825                 if (!adev->bios) {
3826                         dev_err(adev->dev, "no vBIOS found\n");
3827                         r = -EINVAL;
3828                         goto failed;
3829                 }
3830                 DRM_INFO("GPU posting now...\n");
3831                 r = amdgpu_device_asic_init(adev);
3832                 if (r) {
3833                         dev_err(adev->dev, "gpu post error!\n");
3834                         goto failed;
3835                 }
3836         }
3837
3838         if (adev->is_atom_fw) {
3839                 /* Initialize clocks */
3840                 r = amdgpu_atomfirmware_get_clock_info(adev);
3841                 if (r) {
3842                         dev_err(adev->dev, "amdgpu_atomfirmware_get_clock_info failed\n");
3843                         amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ATOMBIOS_GET_CLOCK_FAIL, 0, 0);
3844                         goto failed;
3845                 }
3846         } else {
3847                 /* Initialize clocks */
3848                 r = amdgpu_atombios_get_clock_info(adev);
3849                 if (r) {
3850                         dev_err(adev->dev, "amdgpu_atombios_get_clock_info failed\n");
3851                         amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ATOMBIOS_GET_CLOCK_FAIL, 0, 0);
3852                         goto failed;
3853                 }
3854                 /* init i2c buses */
3855                 if (!amdgpu_device_has_dc_support(adev))
3856                         amdgpu_atombios_i2c_init(adev);
3857         }
3858
3859 fence_driver_init:
3860         /* Fence driver */
3861         r = amdgpu_fence_driver_sw_init(adev);
3862         if (r) {
3863                 dev_err(adev->dev, "amdgpu_fence_driver_sw_init failed\n");
3864                 amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_FENCE_INIT_FAIL, 0, 0);
3865                 goto failed;
3866         }
3867
3868         /* init the mode config */
3869         drm_mode_config_init(adev_to_drm(adev));
3870
3871         r = amdgpu_device_ip_init(adev);
3872         if (r) {
3873                 dev_err(adev->dev, "amdgpu_device_ip_init failed\n");
3874                 amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_AMDGPU_INIT_FAIL, 0, 0);
3875                 goto release_ras_con;
3876         }
3877
3878         amdgpu_fence_driver_hw_init(adev);
3879
3880         dev_info(adev->dev,
3881                 "SE %d, SH per SE %d, CU per SH %d, active_cu_number %d\n",
3882                         adev->gfx.config.max_shader_engines,
3883                         adev->gfx.config.max_sh_per_se,
3884                         adev->gfx.config.max_cu_per_sh,
3885                         adev->gfx.cu_info.number);
3886
3887         adev->accel_working = true;
3888
3889         amdgpu_vm_check_compute_bug(adev);
3890
3891         /* Initialize the buffer migration limit. */
3892         if (amdgpu_moverate >= 0)
3893                 max_MBps = amdgpu_moverate;
3894         else
3895                 max_MBps = 8; /* Allow 8 MB/s. */
3896         /* Get a log2 for easy divisions. */
3897         adev->mm_stats.log2_max_MBps = ilog2(max(1u, max_MBps));
3898
3899         r = amdgpu_pm_sysfs_init(adev);
3900         if (r)
3901                 DRM_ERROR("registering pm sysfs failed (%d).\n", r);
3902
3903         r = amdgpu_ucode_sysfs_init(adev);
3904         if (r) {
3905                 adev->ucode_sysfs_en = false;
3906                 DRM_ERROR("Creating firmware sysfs failed (%d).\n", r);
3907         } else
3908                 adev->ucode_sysfs_en = true;
3909
3910         r = amdgpu_psp_sysfs_init(adev);
3911         if (r) {
3912                 adev->psp_sysfs_en = false;
3913                 if (!amdgpu_sriov_vf(adev))
3914                         DRM_ERROR("Creating psp sysfs failed\n");
3915         } else
3916                 adev->psp_sysfs_en = true;
3917
3918         /*
3919          * Register gpu instance before amdgpu_device_enable_mgpu_fan_boost.
3920          * Otherwise the mgpu fan boost feature will be skipped due to the
3921          * gpu instance is counted less.
3922          */
3923         amdgpu_register_gpu_instance(adev);
3924
3925         /* enable clockgating, etc. after ib tests, etc. since some blocks require
3926          * explicit gating rather than handling it automatically.
3927          */
3928         if (!adev->gmc.xgmi.pending_reset) {
3929                 r = amdgpu_device_ip_late_init(adev);
3930                 if (r) {
3931                         dev_err(adev->dev, "amdgpu_device_ip_late_init failed\n");
3932                         amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_AMDGPU_LATE_INIT_FAIL, 0, r);
3933                         goto release_ras_con;
3934                 }
3935                 /* must succeed. */
3936                 amdgpu_ras_resume(adev);
3937                 queue_delayed_work(system_wq, &adev->delayed_init_work,
3938                                    msecs_to_jiffies(AMDGPU_RESUME_MS));
3939         }
3940
3941         if (amdgpu_sriov_vf(adev)) {
3942                 amdgpu_virt_release_full_gpu(adev, true);
3943                 flush_delayed_work(&adev->delayed_init_work);
3944         }
3945
3946         r = sysfs_create_files(&adev->dev->kobj, amdgpu_dev_attributes);
3947         if (r)
3948                 dev_err(adev->dev, "Could not create amdgpu device attr\n");
3949
3950         if (IS_ENABLED(CONFIG_PERF_EVENTS))
3951                 r = amdgpu_pmu_init(adev);
3952         if (r)
3953                 dev_err(adev->dev, "amdgpu_pmu_init failed\n");
3954
3955         /* Have stored pci confspace at hand for restore in sudden PCI error */
3956         if (amdgpu_device_cache_pci_state(adev->pdev))
3957                 pci_restore_state(pdev);
3958
3959         /* if we have > 1 VGA cards, then disable the amdgpu VGA resources */
3960         /* this will fail for cards that aren't VGA class devices, just
3961          * ignore it */
3962         if ((adev->pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA)
3963                 vga_client_register(adev->pdev, amdgpu_device_vga_set_decode);
3964
3965         px = amdgpu_device_supports_px(ddev);
3966
3967         if (px || (!pci_is_thunderbolt_attached(adev->pdev) &&
3968                                 apple_gmux_detect(NULL, NULL)))
3969                 vga_switcheroo_register_client(adev->pdev,
3970                                                &amdgpu_switcheroo_ops, px);
3971
3972         if (px)
3973                 vga_switcheroo_init_domain_pm_ops(adev->dev, &adev->vga_pm_domain);
3974
3975         if (adev->gmc.xgmi.pending_reset)
3976                 queue_delayed_work(system_wq, &mgpu_info.delayed_reset_work,
3977                                    msecs_to_jiffies(AMDGPU_RESUME_MS));
3978
3979         amdgpu_device_check_iommu_direct_map(adev);
3980
3981         return 0;
3982
3983 release_ras_con:
3984         if (amdgpu_sriov_vf(adev))
3985                 amdgpu_virt_release_full_gpu(adev, true);
3986
3987         /* failed in exclusive mode due to timeout */
3988         if (amdgpu_sriov_vf(adev) &&
3989                 !amdgpu_sriov_runtime(adev) &&
3990                 amdgpu_virt_mmio_blocked(adev) &&
3991                 !amdgpu_virt_wait_reset(adev)) {
3992                 dev_err(adev->dev, "VF exclusive mode timeout\n");
3993                 /* Don't send request since VF is inactive. */
3994                 adev->virt.caps &= ~AMDGPU_SRIOV_CAPS_RUNTIME;
3995                 adev->virt.ops = NULL;
3996                 r = -EAGAIN;
3997         }
3998         amdgpu_release_ras_context(adev);
3999
4000 failed:
4001         amdgpu_vf_error_trans_all(adev);
4002
4003         return r;
4004 }
4005
4006 static void amdgpu_device_unmap_mmio(struct amdgpu_device *adev)
4007 {
4008
4009         /* Clear all CPU mappings pointing to this device */
4010         unmap_mapping_range(adev->ddev.anon_inode->i_mapping, 0, 0, 1);
4011
4012         /* Unmap all mapped bars - Doorbell, registers and VRAM */
4013         amdgpu_device_doorbell_fini(adev);
4014
4015         iounmap(adev->rmmio);
4016         adev->rmmio = NULL;
4017         if (adev->mman.aper_base_kaddr)
4018                 iounmap(adev->mman.aper_base_kaddr);
4019         adev->mman.aper_base_kaddr = NULL;
4020
4021         /* Memory manager related */
4022         if (!adev->gmc.xgmi.connected_to_cpu) {
4023                 arch_phys_wc_del(adev->gmc.vram_mtrr);
4024                 arch_io_free_memtype_wc(adev->gmc.aper_base, adev->gmc.aper_size);
4025         }
4026 }
4027
4028 /**
4029  * amdgpu_device_fini_hw - tear down the driver
4030  *
4031  * @adev: amdgpu_device pointer
4032  *
4033  * Tear down the driver info (all asics).
4034  * Called at driver shutdown.
4035  */
4036 void amdgpu_device_fini_hw(struct amdgpu_device *adev)
4037 {
4038         dev_info(adev->dev, "amdgpu: finishing device.\n");
4039         flush_delayed_work(&adev->delayed_init_work);
4040         adev->shutdown = true;
4041
4042         /* make sure IB test finished before entering exclusive mode
4043          * to avoid preemption on IB test
4044          * */
4045         if (amdgpu_sriov_vf(adev)) {
4046                 amdgpu_virt_request_full_gpu(adev, false);
4047                 amdgpu_virt_fini_data_exchange(adev);
4048         }
4049
4050         /* disable all interrupts */
4051         amdgpu_irq_disable_all(adev);
4052         if (adev->mode_info.mode_config_initialized){
4053                 if (!drm_drv_uses_atomic_modeset(adev_to_drm(adev)))
4054                         drm_helper_force_disable_all(adev_to_drm(adev));
4055                 else
4056                         drm_atomic_helper_shutdown(adev_to_drm(adev));
4057         }
4058         amdgpu_fence_driver_hw_fini(adev);
4059
4060         if (adev->mman.initialized)
4061                 drain_workqueue(adev->mman.bdev.wq);
4062
4063         if (adev->pm.sysfs_initialized)
4064                 amdgpu_pm_sysfs_fini(adev);
4065         if (adev->ucode_sysfs_en)
4066                 amdgpu_ucode_sysfs_fini(adev);
4067         if (adev->psp_sysfs_en)
4068                 amdgpu_psp_sysfs_fini(adev);
4069         sysfs_remove_files(&adev->dev->kobj, amdgpu_dev_attributes);
4070
4071         /* disable ras feature must before hw fini */
4072         amdgpu_ras_pre_fini(adev);
4073
4074         amdgpu_device_ip_fini_early(adev);
4075
4076         amdgpu_irq_fini_hw(adev);
4077
4078         if (adev->mman.initialized)
4079                 ttm_device_clear_dma_mappings(&adev->mman.bdev);
4080
4081         amdgpu_gart_dummy_page_fini(adev);
4082
4083         if (drm_dev_is_unplugged(adev_to_drm(adev)))
4084                 amdgpu_device_unmap_mmio(adev);
4085
4086 }
4087
4088 void amdgpu_device_fini_sw(struct amdgpu_device *adev)
4089 {
4090         int idx;
4091         bool px;
4092
4093         amdgpu_fence_driver_sw_fini(adev);
4094         amdgpu_device_ip_fini(adev);
4095         amdgpu_ucode_release(&adev->firmware.gpu_info_fw);
4096         adev->accel_working = false;
4097         dma_fence_put(rcu_dereference_protected(adev->gang_submit, true));
4098
4099         amdgpu_reset_fini(adev);
4100
4101         /* free i2c buses */
4102         if (!amdgpu_device_has_dc_support(adev))
4103                 amdgpu_i2c_fini(adev);
4104
4105         if (amdgpu_emu_mode != 1)
4106                 amdgpu_atombios_fini(adev);
4107
4108         kfree(adev->bios);
4109         adev->bios = NULL;
4110
4111         px = amdgpu_device_supports_px(adev_to_drm(adev));
4112
4113         if (px || (!pci_is_thunderbolt_attached(adev->pdev) &&
4114                                 apple_gmux_detect(NULL, NULL)))
4115                 vga_switcheroo_unregister_client(adev->pdev);
4116
4117         if (px)
4118                 vga_switcheroo_fini_domain_pm_ops(adev->dev);
4119
4120         if ((adev->pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA)
4121                 vga_client_unregister(adev->pdev);
4122
4123         if (drm_dev_enter(adev_to_drm(adev), &idx)) {
4124
4125                 iounmap(adev->rmmio);
4126                 adev->rmmio = NULL;
4127                 amdgpu_device_doorbell_fini(adev);
4128                 drm_dev_exit(idx);
4129         }
4130
4131         if (IS_ENABLED(CONFIG_PERF_EVENTS))
4132                 amdgpu_pmu_fini(adev);
4133         if (adev->mman.discovery_bin)
4134                 amdgpu_discovery_fini(adev);
4135
4136         amdgpu_reset_put_reset_domain(adev->reset_domain);
4137         adev->reset_domain = NULL;
4138
4139         kfree(adev->pci_state);
4140
4141 }
4142
4143 /**
4144  * amdgpu_device_evict_resources - evict device resources
4145  * @adev: amdgpu device object
4146  *
4147  * Evicts all ttm device resources(vram BOs, gart table) from the lru list
4148  * of the vram memory type. Mainly used for evicting device resources
4149  * at suspend time.
4150  *
4151  */
4152 static int amdgpu_device_evict_resources(struct amdgpu_device *adev)
4153 {
4154         int ret;
4155
4156         /* No need to evict vram on APUs for suspend to ram or s2idle */
4157         if ((adev->in_s3 || adev->in_s0ix) && (adev->flags & AMD_IS_APU))
4158                 return 0;
4159
4160         ret = amdgpu_ttm_evict_resources(adev, TTM_PL_VRAM);
4161         if (ret)
4162                 DRM_WARN("evicting device resources failed\n");
4163         return ret;
4164 }
4165
4166 /*
4167  * Suspend & resume.
4168  */
4169 /**
4170  * amdgpu_device_suspend - initiate device suspend
4171  *
4172  * @dev: drm dev pointer
4173  * @fbcon : notify the fbdev of suspend
4174  *
4175  * Puts the hw in the suspend state (all asics).
4176  * Returns 0 for success or an error on failure.
4177  * Called at driver suspend.
4178  */
4179 int amdgpu_device_suspend(struct drm_device *dev, bool fbcon)
4180 {
4181         struct amdgpu_device *adev = drm_to_adev(dev);
4182         int r = 0;
4183
4184         if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
4185                 return 0;
4186
4187         adev->in_suspend = true;
4188
4189         /* Evict the majority of BOs before grabbing the full access */
4190         r = amdgpu_device_evict_resources(adev);
4191         if (r)
4192                 return r;
4193
4194         if (amdgpu_sriov_vf(adev)) {
4195                 amdgpu_virt_fini_data_exchange(adev);
4196                 r = amdgpu_virt_request_full_gpu(adev, false);
4197                 if (r)
4198                         return r;
4199         }
4200
4201         if (amdgpu_acpi_smart_shift_update(dev, AMDGPU_SS_DEV_D3))
4202                 DRM_WARN("smart shift update failed\n");
4203
4204         if (fbcon)
4205                 drm_fb_helper_set_suspend_unlocked(adev_to_drm(adev)->fb_helper, true);
4206
4207         cancel_delayed_work_sync(&adev->delayed_init_work);
4208
4209         amdgpu_ras_suspend(adev);
4210
4211         amdgpu_device_ip_suspend_phase1(adev);
4212
4213         if (!adev->in_s0ix)
4214                 amdgpu_amdkfd_suspend(adev, adev->in_runpm);
4215
4216         r = amdgpu_device_evict_resources(adev);
4217         if (r)
4218                 return r;
4219
4220         amdgpu_fence_driver_hw_fini(adev);
4221
4222         amdgpu_device_ip_suspend_phase2(adev);
4223
4224         if (amdgpu_sriov_vf(adev))
4225                 amdgpu_virt_release_full_gpu(adev, false);
4226
4227         return 0;
4228 }
4229
4230 /**
4231  * amdgpu_device_resume - initiate device resume
4232  *
4233  * @dev: drm dev pointer
4234  * @fbcon : notify the fbdev of resume
4235  *
4236  * Bring the hw back to operating state (all asics).
4237  * Returns 0 for success or an error on failure.
4238  * Called at driver resume.
4239  */
4240 int amdgpu_device_resume(struct drm_device *dev, bool fbcon)
4241 {
4242         struct amdgpu_device *adev = drm_to_adev(dev);
4243         int r = 0;
4244
4245         if (amdgpu_sriov_vf(adev)) {
4246                 r = amdgpu_virt_request_full_gpu(adev, true);
4247                 if (r)
4248                         return r;
4249         }
4250
4251         if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
4252                 return 0;
4253
4254         if (adev->in_s0ix)
4255                 amdgpu_dpm_gfx_state_change(adev, sGpuChangeState_D0Entry);
4256
4257         /* post card */
4258         if (amdgpu_device_need_post(adev)) {
4259                 r = amdgpu_device_asic_init(adev);
4260                 if (r)
4261                         dev_err(adev->dev, "amdgpu asic init failed\n");
4262         }
4263
4264         r = amdgpu_device_ip_resume(adev);
4265
4266         if (r) {
4267                 dev_err(adev->dev, "amdgpu_device_ip_resume failed (%d).\n", r);
4268                 goto exit;
4269         }
4270         amdgpu_fence_driver_hw_init(adev);
4271
4272         r = amdgpu_device_ip_late_init(adev);
4273         if (r)
4274                 goto exit;
4275
4276         queue_delayed_work(system_wq, &adev->delayed_init_work,
4277                            msecs_to_jiffies(AMDGPU_RESUME_MS));
4278
4279         if (!adev->in_s0ix) {
4280                 r = amdgpu_amdkfd_resume(adev, adev->in_runpm);
4281                 if (r)
4282                         goto exit;
4283         }
4284
4285 exit:
4286         if (amdgpu_sriov_vf(adev)) {
4287                 amdgpu_virt_init_data_exchange(adev);
4288                 amdgpu_virt_release_full_gpu(adev, true);
4289         }
4290
4291         if (r)
4292                 return r;
4293
4294         /* Make sure IB tests flushed */
4295         flush_delayed_work(&adev->delayed_init_work);
4296
4297         if (fbcon)
4298                 drm_fb_helper_set_suspend_unlocked(adev_to_drm(adev)->fb_helper, false);
4299
4300         amdgpu_ras_resume(adev);
4301
4302         if (adev->mode_info.num_crtc) {
4303                 /*
4304                  * Most of the connector probing functions try to acquire runtime pm
4305                  * refs to ensure that the GPU is powered on when connector polling is
4306                  * performed. Since we're calling this from a runtime PM callback,
4307                  * trying to acquire rpm refs will cause us to deadlock.
4308                  *
4309                  * Since we're guaranteed to be holding the rpm lock, it's safe to
4310                  * temporarily disable the rpm helpers so this doesn't deadlock us.
4311                  */
4312 #ifdef CONFIG_PM
4313                 dev->dev->power.disable_depth++;
4314 #endif
4315                 if (!adev->dc_enabled)
4316                         drm_helper_hpd_irq_event(dev);
4317                 else
4318                         drm_kms_helper_hotplug_event(dev);
4319 #ifdef CONFIG_PM
4320                 dev->dev->power.disable_depth--;
4321 #endif
4322         }
4323         adev->in_suspend = false;
4324
4325         if (adev->enable_mes)
4326                 amdgpu_mes_self_test(adev);
4327
4328         if (amdgpu_acpi_smart_shift_update(dev, AMDGPU_SS_DEV_D0))
4329                 DRM_WARN("smart shift update failed\n");
4330
4331         return 0;
4332 }
4333
4334 /**
4335  * amdgpu_device_ip_check_soft_reset - did soft reset succeed
4336  *
4337  * @adev: amdgpu_device pointer
4338  *
4339  * The list of all the hardware IPs that make up the asic is walked and
4340  * the check_soft_reset callbacks are run.  check_soft_reset determines
4341  * if the asic is still hung or not.
4342  * Returns true if any of the IPs are still in a hung state, false if not.
4343  */
4344 static bool amdgpu_device_ip_check_soft_reset(struct amdgpu_device *adev)
4345 {
4346         int i;
4347         bool asic_hang = false;
4348
4349         if (amdgpu_sriov_vf(adev))
4350                 return true;
4351
4352         if (amdgpu_asic_need_full_reset(adev))
4353                 return true;
4354
4355         for (i = 0; i < adev->num_ip_blocks; i++) {
4356                 if (!adev->ip_blocks[i].status.valid)
4357                         continue;
4358                 if (adev->ip_blocks[i].version->funcs->check_soft_reset)
4359                         adev->ip_blocks[i].status.hang =
4360                                 adev->ip_blocks[i].version->funcs->check_soft_reset(adev);
4361                 if (adev->ip_blocks[i].status.hang) {
4362                         dev_info(adev->dev, "IP block:%s is hung!\n", adev->ip_blocks[i].version->funcs->name);
4363                         asic_hang = true;
4364                 }
4365         }
4366         return asic_hang;
4367 }
4368
4369 /**
4370  * amdgpu_device_ip_pre_soft_reset - prepare for soft reset
4371  *
4372  * @adev: amdgpu_device pointer
4373  *
4374  * The list of all the hardware IPs that make up the asic is walked and the
4375  * pre_soft_reset callbacks are run if the block is hung.  pre_soft_reset
4376  * handles any IP specific hardware or software state changes that are
4377  * necessary for a soft reset to succeed.
4378  * Returns 0 on success, negative error code on failure.
4379  */
4380 static int amdgpu_device_ip_pre_soft_reset(struct amdgpu_device *adev)
4381 {
4382         int i, r = 0;
4383
4384         for (i = 0; i < adev->num_ip_blocks; i++) {
4385                 if (!adev->ip_blocks[i].status.valid)
4386                         continue;
4387                 if (adev->ip_blocks[i].status.hang &&
4388                     adev->ip_blocks[i].version->funcs->pre_soft_reset) {
4389                         r = adev->ip_blocks[i].version->funcs->pre_soft_reset(adev);
4390                         if (r)
4391                                 return r;
4392                 }
4393         }
4394
4395         return 0;
4396 }
4397
4398 /**
4399  * amdgpu_device_ip_need_full_reset - check if a full asic reset is needed
4400  *
4401  * @adev: amdgpu_device pointer
4402  *
4403  * Some hardware IPs cannot be soft reset.  If they are hung, a full gpu
4404  * reset is necessary to recover.
4405  * Returns true if a full asic reset is required, false if not.
4406  */
4407 static bool amdgpu_device_ip_need_full_reset(struct amdgpu_device *adev)
4408 {
4409         int i;
4410
4411         if (amdgpu_asic_need_full_reset(adev))
4412                 return true;
4413
4414         for (i = 0; i < adev->num_ip_blocks; i++) {
4415                 if (!adev->ip_blocks[i].status.valid)
4416                         continue;
4417                 if ((adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC) ||
4418                     (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_SMC) ||
4419                     (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_ACP) ||
4420                     (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_DCE) ||
4421                      adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_PSP) {
4422                         if (adev->ip_blocks[i].status.hang) {
4423                                 dev_info(adev->dev, "Some block need full reset!\n");
4424                                 return true;
4425                         }
4426                 }
4427         }
4428         return false;
4429 }
4430
4431 /**
4432  * amdgpu_device_ip_soft_reset - do a soft reset
4433  *
4434  * @adev: amdgpu_device pointer
4435  *
4436  * The list of all the hardware IPs that make up the asic is walked and the
4437  * soft_reset callbacks are run if the block is hung.  soft_reset handles any
4438  * IP specific hardware or software state changes that are necessary to soft
4439  * reset the IP.
4440  * Returns 0 on success, negative error code on failure.
4441  */
4442 static int amdgpu_device_ip_soft_reset(struct amdgpu_device *adev)
4443 {
4444         int i, r = 0;
4445
4446         for (i = 0; i < adev->num_ip_blocks; i++) {
4447                 if (!adev->ip_blocks[i].status.valid)
4448                         continue;
4449                 if (adev->ip_blocks[i].status.hang &&
4450                     adev->ip_blocks[i].version->funcs->soft_reset) {
4451                         r = adev->ip_blocks[i].version->funcs->soft_reset(adev);
4452                         if (r)
4453                                 return r;
4454                 }
4455         }
4456
4457         return 0;
4458 }
4459
4460 /**
4461  * amdgpu_device_ip_post_soft_reset - clean up from soft reset
4462  *
4463  * @adev: amdgpu_device pointer
4464  *
4465  * The list of all the hardware IPs that make up the asic is walked and the
4466  * post_soft_reset callbacks are run if the asic was hung.  post_soft_reset
4467  * handles any IP specific hardware or software state changes that are
4468  * necessary after the IP has been soft reset.
4469  * Returns 0 on success, negative error code on failure.
4470  */
4471 static int amdgpu_device_ip_post_soft_reset(struct amdgpu_device *adev)
4472 {
4473         int i, r = 0;
4474
4475         for (i = 0; i < adev->num_ip_blocks; i++) {
4476                 if (!adev->ip_blocks[i].status.valid)
4477                         continue;
4478                 if (adev->ip_blocks[i].status.hang &&
4479                     adev->ip_blocks[i].version->funcs->post_soft_reset)
4480                         r = adev->ip_blocks[i].version->funcs->post_soft_reset(adev);
4481                 if (r)
4482                         return r;
4483         }
4484
4485         return 0;
4486 }
4487
4488 /**
4489  * amdgpu_device_recover_vram - Recover some VRAM contents
4490  *
4491  * @adev: amdgpu_device pointer
4492  *
4493  * Restores the contents of VRAM buffers from the shadows in GTT.  Used to
4494  * restore things like GPUVM page tables after a GPU reset where
4495  * the contents of VRAM might be lost.
4496  *
4497  * Returns:
4498  * 0 on success, negative error code on failure.
4499  */
4500 static int amdgpu_device_recover_vram(struct amdgpu_device *adev)
4501 {
4502         struct dma_fence *fence = NULL, *next = NULL;
4503         struct amdgpu_bo *shadow;
4504         struct amdgpu_bo_vm *vmbo;
4505         long r = 1, tmo;
4506
4507         if (amdgpu_sriov_runtime(adev))
4508                 tmo = msecs_to_jiffies(8000);
4509         else
4510                 tmo = msecs_to_jiffies(100);
4511
4512         dev_info(adev->dev, "recover vram bo from shadow start\n");
4513         mutex_lock(&adev->shadow_list_lock);
4514         list_for_each_entry(vmbo, &adev->shadow_list, shadow_list) {
4515                 /* If vm is compute context or adev is APU, shadow will be NULL */
4516                 if (!vmbo->shadow)
4517                         continue;
4518                 shadow = vmbo->shadow;
4519
4520                 /* No need to recover an evicted BO */
4521                 if (shadow->tbo.resource->mem_type != TTM_PL_TT ||
4522                     shadow->tbo.resource->start == AMDGPU_BO_INVALID_OFFSET ||
4523                     shadow->parent->tbo.resource->mem_type != TTM_PL_VRAM)
4524                         continue;
4525
4526                 r = amdgpu_bo_restore_shadow(shadow, &next);
4527                 if (r)
4528                         break;
4529
4530                 if (fence) {
4531                         tmo = dma_fence_wait_timeout(fence, false, tmo);
4532                         dma_fence_put(fence);
4533                         fence = next;
4534                         if (tmo == 0) {
4535                                 r = -ETIMEDOUT;
4536                                 break;
4537                         } else if (tmo < 0) {
4538                                 r = tmo;
4539                                 break;
4540                         }
4541                 } else {
4542                         fence = next;
4543                 }
4544         }
4545         mutex_unlock(&adev->shadow_list_lock);
4546
4547         if (fence)
4548                 tmo = dma_fence_wait_timeout(fence, false, tmo);
4549         dma_fence_put(fence);
4550
4551         if (r < 0 || tmo <= 0) {
4552                 dev_err(adev->dev, "recover vram bo from shadow failed, r is %ld, tmo is %ld\n", r, tmo);
4553                 return -EIO;
4554         }
4555
4556         dev_info(adev->dev, "recover vram bo from shadow done\n");
4557         return 0;
4558 }
4559
4560
4561 /**
4562  * amdgpu_device_reset_sriov - reset ASIC for SR-IOV vf
4563  *
4564  * @adev: amdgpu_device pointer
4565  * @from_hypervisor: request from hypervisor
4566  *
4567  * do VF FLR and reinitialize Asic
4568  * return 0 means succeeded otherwise failed
4569  */
4570 static int amdgpu_device_reset_sriov(struct amdgpu_device *adev,
4571                                      bool from_hypervisor)
4572 {
4573         int r;
4574         struct amdgpu_hive_info *hive = NULL;
4575         int retry_limit = 0;
4576
4577 retry:
4578         amdgpu_amdkfd_pre_reset(adev);
4579
4580         if (from_hypervisor)
4581                 r = amdgpu_virt_request_full_gpu(adev, true);
4582         else
4583                 r = amdgpu_virt_reset_gpu(adev);
4584         if (r)
4585                 return r;
4586
4587         /* Resume IP prior to SMC */
4588         r = amdgpu_device_ip_reinit_early_sriov(adev);
4589         if (r)
4590                 goto error;
4591
4592         amdgpu_virt_init_data_exchange(adev);
4593
4594         r = amdgpu_device_fw_loading(adev);
4595         if (r)
4596                 return r;
4597
4598         /* now we are okay to resume SMC/CP/SDMA */
4599         r = amdgpu_device_ip_reinit_late_sriov(adev);
4600         if (r)
4601                 goto error;
4602
4603         hive = amdgpu_get_xgmi_hive(adev);
4604         /* Update PSP FW topology after reset */
4605         if (hive && adev->gmc.xgmi.num_physical_nodes > 1)
4606                 r = amdgpu_xgmi_update_topology(hive, adev);
4607
4608         if (hive)
4609                 amdgpu_put_xgmi_hive(hive);
4610
4611         if (!r) {
4612                 amdgpu_irq_gpu_reset_resume_helper(adev);
4613                 r = amdgpu_ib_ring_tests(adev);
4614
4615                 amdgpu_amdkfd_post_reset(adev);
4616         }
4617
4618 error:
4619         if (!r && adev->virt.gim_feature & AMDGIM_FEATURE_GIM_FLR_VRAMLOST) {
4620                 amdgpu_inc_vram_lost(adev);
4621                 r = amdgpu_device_recover_vram(adev);
4622         }
4623         amdgpu_virt_release_full_gpu(adev, true);
4624
4625         if (AMDGPU_RETRY_SRIOV_RESET(r)) {
4626                 if (retry_limit < AMDGPU_MAX_RETRY_LIMIT) {
4627                         retry_limit++;
4628                         goto retry;
4629                 } else
4630                         DRM_ERROR("GPU reset retry is beyond the retry limit\n");
4631         }
4632
4633         return r;
4634 }
4635
4636 /**
4637  * amdgpu_device_has_job_running - check if there is any job in mirror list
4638  *
4639  * @adev: amdgpu_device pointer
4640  *
4641  * check if there is any job in mirror list
4642  */
4643 bool amdgpu_device_has_job_running(struct amdgpu_device *adev)
4644 {
4645         int i;
4646         struct drm_sched_job *job;
4647
4648         for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
4649                 struct amdgpu_ring *ring = adev->rings[i];
4650
4651                 if (!ring || !ring->sched.thread)
4652                         continue;
4653
4654                 spin_lock(&ring->sched.job_list_lock);
4655                 job = list_first_entry_or_null(&ring->sched.pending_list,
4656                                                struct drm_sched_job, list);
4657                 spin_unlock(&ring->sched.job_list_lock);
4658                 if (job)
4659                         return true;
4660         }
4661         return false;
4662 }
4663
4664 /**
4665  * amdgpu_device_should_recover_gpu - check if we should try GPU recovery
4666  *
4667  * @adev: amdgpu_device pointer
4668  *
4669  * Check amdgpu_gpu_recovery and SRIOV status to see if we should try to recover
4670  * a hung GPU.
4671  */
4672 bool amdgpu_device_should_recover_gpu(struct amdgpu_device *adev)
4673 {
4674
4675         if (amdgpu_gpu_recovery == 0)
4676                 goto disabled;
4677
4678         /* Skip soft reset check in fatal error mode */
4679         if (!amdgpu_ras_is_poison_mode_supported(adev))
4680                 return true;
4681
4682         if (amdgpu_sriov_vf(adev))
4683                 return true;
4684
4685         if (amdgpu_gpu_recovery == -1) {
4686                 switch (adev->asic_type) {
4687 #ifdef CONFIG_DRM_AMDGPU_SI
4688                 case CHIP_VERDE:
4689                 case CHIP_TAHITI:
4690                 case CHIP_PITCAIRN:
4691                 case CHIP_OLAND:
4692                 case CHIP_HAINAN:
4693 #endif
4694 #ifdef CONFIG_DRM_AMDGPU_CIK
4695                 case CHIP_KAVERI:
4696                 case CHIP_KABINI:
4697                 case CHIP_MULLINS:
4698 #endif
4699                 case CHIP_CARRIZO:
4700                 case CHIP_STONEY:
4701                 case CHIP_CYAN_SKILLFISH:
4702                         goto disabled;
4703                 default:
4704                         break;
4705                 }
4706         }
4707
4708         return true;
4709
4710 disabled:
4711                 dev_info(adev->dev, "GPU recovery disabled.\n");
4712                 return false;
4713 }
4714
4715 int amdgpu_device_mode1_reset(struct amdgpu_device *adev)
4716 {
4717         u32 i;
4718         int ret = 0;
4719
4720         amdgpu_atombios_scratch_regs_engine_hung(adev, true);
4721
4722         dev_info(adev->dev, "GPU mode1 reset\n");
4723
4724         /* disable BM */
4725         pci_clear_master(adev->pdev);
4726
4727         amdgpu_device_cache_pci_state(adev->pdev);
4728
4729         if (amdgpu_dpm_is_mode1_reset_supported(adev)) {
4730                 dev_info(adev->dev, "GPU smu mode1 reset\n");
4731                 ret = amdgpu_dpm_mode1_reset(adev);
4732         } else {
4733                 dev_info(adev->dev, "GPU psp mode1 reset\n");
4734                 ret = psp_gpu_reset(adev);
4735         }
4736
4737         if (ret)
4738                 dev_err(adev->dev, "GPU mode1 reset failed\n");
4739
4740         amdgpu_device_load_pci_state(adev->pdev);
4741
4742         /* wait for asic to come out of reset */
4743         for (i = 0; i < adev->usec_timeout; i++) {
4744                 u32 memsize = adev->nbio.funcs->get_memsize(adev);
4745
4746                 if (memsize != 0xffffffff)
4747                         break;
4748                 udelay(1);
4749         }
4750
4751         amdgpu_atombios_scratch_regs_engine_hung(adev, false);
4752         return ret;
4753 }
4754
4755 int amdgpu_device_pre_asic_reset(struct amdgpu_device *adev,
4756                                  struct amdgpu_reset_context *reset_context)
4757 {
4758         int i, r = 0;
4759         struct amdgpu_job *job = NULL;
4760         bool need_full_reset =
4761                 test_bit(AMDGPU_NEED_FULL_RESET, &reset_context->flags);
4762
4763         if (reset_context->reset_req_dev == adev)
4764                 job = reset_context->job;
4765
4766         if (amdgpu_sriov_vf(adev)) {
4767                 /* stop the data exchange thread */
4768                 amdgpu_virt_fini_data_exchange(adev);
4769         }
4770
4771         amdgpu_fence_driver_isr_toggle(adev, true);
4772
4773         /* block all schedulers and reset given job's ring */
4774         for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
4775                 struct amdgpu_ring *ring = adev->rings[i];
4776
4777                 if (!ring || !ring->sched.thread)
4778                         continue;
4779
4780                 /*clear job fence from fence drv to avoid force_completion
4781                  *leave NULL and vm flush fence in fence drv */
4782                 amdgpu_fence_driver_clear_job_fences(ring);
4783
4784                 /* after all hw jobs are reset, hw fence is meaningless, so force_completion */
4785                 amdgpu_fence_driver_force_completion(ring);
4786         }
4787
4788         amdgpu_fence_driver_isr_toggle(adev, false);
4789
4790         if (job && job->vm)
4791                 drm_sched_increase_karma(&job->base);
4792
4793         r = amdgpu_reset_prepare_hwcontext(adev, reset_context);
4794         /* If reset handler not implemented, continue; otherwise return */
4795         if (r == -ENOSYS)
4796                 r = 0;
4797         else
4798                 return r;
4799
4800         /* Don't suspend on bare metal if we are not going to HW reset the ASIC */
4801         if (!amdgpu_sriov_vf(adev)) {
4802
4803                 if (!need_full_reset)
4804                         need_full_reset = amdgpu_device_ip_need_full_reset(adev);
4805
4806                 if (!need_full_reset && amdgpu_gpu_recovery &&
4807                     amdgpu_device_ip_check_soft_reset(adev)) {
4808                         amdgpu_device_ip_pre_soft_reset(adev);
4809                         r = amdgpu_device_ip_soft_reset(adev);
4810                         amdgpu_device_ip_post_soft_reset(adev);
4811                         if (r || amdgpu_device_ip_check_soft_reset(adev)) {
4812                                 dev_info(adev->dev, "soft reset failed, will fallback to full reset!\n");
4813                                 need_full_reset = true;
4814                         }
4815                 }
4816
4817                 if (need_full_reset)
4818                         r = amdgpu_device_ip_suspend(adev);
4819                 if (need_full_reset)
4820                         set_bit(AMDGPU_NEED_FULL_RESET, &reset_context->flags);
4821                 else
4822                         clear_bit(AMDGPU_NEED_FULL_RESET,
4823                                   &reset_context->flags);
4824         }
4825
4826         return r;
4827 }
4828
4829 static int amdgpu_reset_reg_dumps(struct amdgpu_device *adev)
4830 {
4831         int i;
4832
4833         lockdep_assert_held(&adev->reset_domain->sem);
4834
4835         for (i = 0; i < adev->num_regs; i++) {
4836                 adev->reset_dump_reg_value[i] = RREG32(adev->reset_dump_reg_list[i]);
4837                 trace_amdgpu_reset_reg_dumps(adev->reset_dump_reg_list[i],
4838                                              adev->reset_dump_reg_value[i]);
4839         }
4840
4841         return 0;
4842 }
4843
4844 #ifdef CONFIG_DEV_COREDUMP
4845 static ssize_t amdgpu_devcoredump_read(char *buffer, loff_t offset,
4846                 size_t count, void *data, size_t datalen)
4847 {
4848         struct drm_printer p;
4849         struct amdgpu_device *adev = data;
4850         struct drm_print_iterator iter;
4851         int i;
4852
4853         iter.data = buffer;
4854         iter.offset = 0;
4855         iter.start = offset;
4856         iter.remain = count;
4857
4858         p = drm_coredump_printer(&iter);
4859
4860         drm_printf(&p, "**** AMDGPU Device Coredump ****\n");
4861         drm_printf(&p, "kernel: " UTS_RELEASE "\n");
4862         drm_printf(&p, "module: " KBUILD_MODNAME "\n");
4863         drm_printf(&p, "time: %lld.%09ld\n", adev->reset_time.tv_sec, adev->reset_time.tv_nsec);
4864         if (adev->reset_task_info.pid)
4865                 drm_printf(&p, "process_name: %s PID: %d\n",
4866                            adev->reset_task_info.process_name,
4867                            adev->reset_task_info.pid);
4868
4869         if (adev->reset_vram_lost)
4870                 drm_printf(&p, "VRAM is lost due to GPU reset!\n");
4871         if (adev->num_regs) {
4872                 drm_printf(&p, "AMDGPU register dumps:\nOffset:     Value:\n");
4873
4874                 for (i = 0; i < adev->num_regs; i++)
4875                         drm_printf(&p, "0x%08x: 0x%08x\n",
4876                                    adev->reset_dump_reg_list[i],
4877                                    adev->reset_dump_reg_value[i]);
4878         }
4879
4880         return count - iter.remain;
4881 }
4882
4883 static void amdgpu_devcoredump_free(void *data)
4884 {
4885 }
4886
4887 static void amdgpu_reset_capture_coredumpm(struct amdgpu_device *adev)
4888 {
4889         struct drm_device *dev = adev_to_drm(adev);
4890
4891         ktime_get_ts64(&adev->reset_time);
4892         dev_coredumpm(dev->dev, THIS_MODULE, adev, 0, GFP_KERNEL,
4893                       amdgpu_devcoredump_read, amdgpu_devcoredump_free);
4894 }
4895 #endif
4896
4897 int amdgpu_do_asic_reset(struct list_head *device_list_handle,
4898                          struct amdgpu_reset_context *reset_context)
4899 {
4900         struct amdgpu_device *tmp_adev = NULL;
4901         bool need_full_reset, skip_hw_reset, vram_lost = false;
4902         int r = 0;
4903         bool gpu_reset_for_dev_remove = 0;
4904
4905         /* Try reset handler method first */
4906         tmp_adev = list_first_entry(device_list_handle, struct amdgpu_device,
4907                                     reset_list);
4908         amdgpu_reset_reg_dumps(tmp_adev);
4909
4910         reset_context->reset_device_list = device_list_handle;
4911         r = amdgpu_reset_perform_reset(tmp_adev, reset_context);
4912         /* If reset handler not implemented, continue; otherwise return */
4913         if (r == -ENOSYS)
4914                 r = 0;
4915         else
4916                 return r;
4917
4918         /* Reset handler not implemented, use the default method */
4919         need_full_reset =
4920                 test_bit(AMDGPU_NEED_FULL_RESET, &reset_context->flags);
4921         skip_hw_reset = test_bit(AMDGPU_SKIP_HW_RESET, &reset_context->flags);
4922
4923         gpu_reset_for_dev_remove =
4924                 test_bit(AMDGPU_RESET_FOR_DEVICE_REMOVE, &reset_context->flags) &&
4925                         test_bit(AMDGPU_NEED_FULL_RESET, &reset_context->flags);
4926
4927         /*
4928          * ASIC reset has to be done on all XGMI hive nodes ASAP
4929          * to allow proper links negotiation in FW (within 1 sec)
4930          */
4931         if (!skip_hw_reset && need_full_reset) {
4932                 list_for_each_entry(tmp_adev, device_list_handle, reset_list) {
4933                         /* For XGMI run all resets in parallel to speed up the process */
4934                         if (tmp_adev->gmc.xgmi.num_physical_nodes > 1) {
4935                                 tmp_adev->gmc.xgmi.pending_reset = false;
4936                                 if (!queue_work(system_unbound_wq, &tmp_adev->xgmi_reset_work))
4937                                         r = -EALREADY;
4938                         } else
4939                                 r = amdgpu_asic_reset(tmp_adev);
4940
4941                         if (r) {
4942                                 dev_err(tmp_adev->dev, "ASIC reset failed with error, %d for drm dev, %s",
4943                                          r, adev_to_drm(tmp_adev)->unique);
4944                                 break;
4945                         }
4946                 }
4947
4948                 /* For XGMI wait for all resets to complete before proceed */
4949                 if (!r) {
4950                         list_for_each_entry(tmp_adev, device_list_handle, reset_list) {
4951                                 if (tmp_adev->gmc.xgmi.num_physical_nodes > 1) {
4952                                         flush_work(&tmp_adev->xgmi_reset_work);
4953                                         r = tmp_adev->asic_reset_res;
4954                                         if (r)
4955                                                 break;
4956                                 }
4957                         }
4958                 }
4959         }
4960
4961         if (!r && amdgpu_ras_intr_triggered()) {
4962                 list_for_each_entry(tmp_adev, device_list_handle, reset_list) {
4963                         if (tmp_adev->mmhub.ras && tmp_adev->mmhub.ras->ras_block.hw_ops &&
4964                             tmp_adev->mmhub.ras->ras_block.hw_ops->reset_ras_error_count)
4965                                 tmp_adev->mmhub.ras->ras_block.hw_ops->reset_ras_error_count(tmp_adev);
4966                 }
4967
4968                 amdgpu_ras_intr_cleared();
4969         }
4970
4971         /* Since the mode1 reset affects base ip blocks, the
4972          * phase1 ip blocks need to be resumed. Otherwise there
4973          * will be a BIOS signature error and the psp bootloader
4974          * can't load kdb on the next amdgpu install.
4975          */
4976         if (gpu_reset_for_dev_remove) {
4977                 list_for_each_entry(tmp_adev, device_list_handle, reset_list)
4978                         amdgpu_device_ip_resume_phase1(tmp_adev);
4979
4980                 goto end;
4981         }
4982
4983         list_for_each_entry(tmp_adev, device_list_handle, reset_list) {
4984                 if (need_full_reset) {
4985                         /* post card */
4986                         r = amdgpu_device_asic_init(tmp_adev);
4987                         if (r) {
4988                                 dev_warn(tmp_adev->dev, "asic atom init failed!");
4989                         } else {
4990                                 dev_info(tmp_adev->dev, "GPU reset succeeded, trying to resume\n");
4991                                 r = amdgpu_amdkfd_resume_iommu(tmp_adev);
4992                                 if (r)
4993                                         goto out;
4994
4995                                 r = amdgpu_device_ip_resume_phase1(tmp_adev);
4996                                 if (r)
4997                                         goto out;
4998
4999                                 vram_lost = amdgpu_device_check_vram_lost(tmp_adev);
5000 #ifdef CONFIG_DEV_COREDUMP
5001                                 tmp_adev->reset_vram_lost = vram_lost;
5002                                 memset(&tmp_adev->reset_task_info, 0,
5003                                                 sizeof(tmp_adev->reset_task_info));
5004                                 if (reset_context->job && reset_context->job->vm)
5005                                         tmp_adev->reset_task_info =
5006                                                 reset_context->job->vm->task_info;
5007                                 amdgpu_reset_capture_coredumpm(tmp_adev);
5008 #endif
5009                                 if (vram_lost) {
5010                                         DRM_INFO("VRAM is lost due to GPU reset!\n");
5011                                         amdgpu_inc_vram_lost(tmp_adev);
5012                                 }
5013
5014                                 r = amdgpu_device_fw_loading(tmp_adev);
5015                                 if (r)
5016                                         return r;
5017
5018                                 r = amdgpu_device_ip_resume_phase2(tmp_adev);
5019                                 if (r)
5020                                         goto out;
5021
5022                                 if (vram_lost)
5023                                         amdgpu_device_fill_reset_magic(tmp_adev);
5024
5025                                 /*
5026                                  * Add this ASIC as tracked as reset was already
5027                                  * complete successfully.
5028                                  */
5029                                 amdgpu_register_gpu_instance(tmp_adev);
5030
5031                                 if (!reset_context->hive &&
5032                                     tmp_adev->gmc.xgmi.num_physical_nodes > 1)
5033                                         amdgpu_xgmi_add_device(tmp_adev);
5034
5035                                 r = amdgpu_device_ip_late_init(tmp_adev);
5036                                 if (r)
5037                                         goto out;
5038
5039                                 drm_fb_helper_set_suspend_unlocked(adev_to_drm(tmp_adev)->fb_helper, false);
5040
5041                                 /*
5042                                  * The GPU enters bad state once faulty pages
5043                                  * by ECC has reached the threshold, and ras
5044                                  * recovery is scheduled next. So add one check
5045                                  * here to break recovery if it indeed exceeds
5046                                  * bad page threshold, and remind user to
5047                                  * retire this GPU or setting one bigger
5048                                  * bad_page_threshold value to fix this once
5049                                  * probing driver again.
5050                                  */
5051                                 if (!amdgpu_ras_eeprom_check_err_threshold(tmp_adev)) {
5052                                         /* must succeed. */
5053                                         amdgpu_ras_resume(tmp_adev);
5054                                 } else {
5055                                         r = -EINVAL;
5056                                         goto out;
5057                                 }
5058
5059                                 /* Update PSP FW topology after reset */
5060                                 if (reset_context->hive &&
5061                                     tmp_adev->gmc.xgmi.num_physical_nodes > 1)
5062                                         r = amdgpu_xgmi_update_topology(
5063                                                 reset_context->hive, tmp_adev);
5064                         }
5065                 }
5066
5067 out:
5068                 if (!r) {
5069                         amdgpu_irq_gpu_reset_resume_helper(tmp_adev);
5070                         r = amdgpu_ib_ring_tests(tmp_adev);
5071                         if (r) {
5072                                 dev_err(tmp_adev->dev, "ib ring test failed (%d).\n", r);
5073                                 need_full_reset = true;
5074                                 r = -EAGAIN;
5075                                 goto end;
5076                         }
5077                 }
5078
5079                 if (!r)
5080                         r = amdgpu_device_recover_vram(tmp_adev);
5081                 else
5082                         tmp_adev->asic_reset_res = r;
5083         }
5084
5085 end:
5086         if (need_full_reset)
5087                 set_bit(AMDGPU_NEED_FULL_RESET, &reset_context->flags);
5088         else
5089                 clear_bit(AMDGPU_NEED_FULL_RESET, &reset_context->flags);
5090         return r;
5091 }
5092
5093 static void amdgpu_device_set_mp1_state(struct amdgpu_device *adev)
5094 {
5095
5096         switch (amdgpu_asic_reset_method(adev)) {
5097         case AMD_RESET_METHOD_MODE1:
5098                 adev->mp1_state = PP_MP1_STATE_SHUTDOWN;
5099                 break;
5100         case AMD_RESET_METHOD_MODE2:
5101                 adev->mp1_state = PP_MP1_STATE_RESET;
5102                 break;
5103         default:
5104                 adev->mp1_state = PP_MP1_STATE_NONE;
5105                 break;
5106         }
5107 }
5108
5109 static void amdgpu_device_unset_mp1_state(struct amdgpu_device *adev)
5110 {
5111         amdgpu_vf_error_trans_all(adev);
5112         adev->mp1_state = PP_MP1_STATE_NONE;
5113 }
5114
5115 static void amdgpu_device_resume_display_audio(struct amdgpu_device *adev)
5116 {
5117         struct pci_dev *p = NULL;
5118
5119         p = pci_get_domain_bus_and_slot(pci_domain_nr(adev->pdev->bus),
5120                         adev->pdev->bus->number, 1);
5121         if (p) {
5122                 pm_runtime_enable(&(p->dev));
5123                 pm_runtime_resume(&(p->dev));
5124         }
5125
5126         pci_dev_put(p);
5127 }
5128
5129 static int amdgpu_device_suspend_display_audio(struct amdgpu_device *adev)
5130 {
5131         enum amd_reset_method reset_method;
5132         struct pci_dev *p = NULL;
5133         u64 expires;
5134
5135         /*
5136          * For now, only BACO and mode1 reset are confirmed
5137          * to suffer the audio issue without proper suspended.
5138          */
5139         reset_method = amdgpu_asic_reset_method(adev);
5140         if ((reset_method != AMD_RESET_METHOD_BACO) &&
5141              (reset_method != AMD_RESET_METHOD_MODE1))
5142                 return -EINVAL;
5143
5144         p = pci_get_domain_bus_and_slot(pci_domain_nr(adev->pdev->bus),
5145                         adev->pdev->bus->number, 1);
5146         if (!p)
5147                 return -ENODEV;
5148
5149         expires = pm_runtime_autosuspend_expiration(&(p->dev));
5150         if (!expires)
5151                 /*
5152                  * If we cannot get the audio device autosuspend delay,
5153                  * a fixed 4S interval will be used. Considering 3S is
5154                  * the audio controller default autosuspend delay setting.
5155                  * 4S used here is guaranteed to cover that.
5156                  */
5157                 expires = ktime_get_mono_fast_ns() + NSEC_PER_SEC * 4ULL;
5158
5159         while (!pm_runtime_status_suspended(&(p->dev))) {
5160                 if (!pm_runtime_suspend(&(p->dev)))
5161                         break;
5162
5163                 if (expires < ktime_get_mono_fast_ns()) {
5164                         dev_warn(adev->dev, "failed to suspend display audio\n");
5165                         pci_dev_put(p);
5166                         /* TODO: abort the succeeding gpu reset? */
5167                         return -ETIMEDOUT;
5168                 }
5169         }
5170
5171         pm_runtime_disable(&(p->dev));
5172
5173         pci_dev_put(p);
5174         return 0;
5175 }
5176
5177 static inline void amdgpu_device_stop_pending_resets(struct amdgpu_device *adev)
5178 {
5179         struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
5180
5181 #if defined(CONFIG_DEBUG_FS)
5182         if (!amdgpu_sriov_vf(adev))
5183                 cancel_work(&adev->reset_work);
5184 #endif
5185
5186         if (adev->kfd.dev)
5187                 cancel_work(&adev->kfd.reset_work);
5188
5189         if (amdgpu_sriov_vf(adev))
5190                 cancel_work(&adev->virt.flr_work);
5191
5192         if (con && adev->ras_enabled)
5193                 cancel_work(&con->recovery_work);
5194
5195 }
5196
5197 /**
5198  * amdgpu_device_gpu_recover - reset the asic and recover scheduler
5199  *
5200  * @adev: amdgpu_device pointer
5201  * @job: which job trigger hang
5202  * @reset_context: amdgpu reset context pointer
5203  *
5204  * Attempt to reset the GPU if it has hung (all asics).
5205  * Attempt to do soft-reset or full-reset and reinitialize Asic
5206  * Returns 0 for success or an error on failure.
5207  */
5208
5209 int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
5210                               struct amdgpu_job *job,
5211                               struct amdgpu_reset_context *reset_context)
5212 {
5213         struct list_head device_list, *device_list_handle =  NULL;
5214         bool job_signaled = false;
5215         struct amdgpu_hive_info *hive = NULL;
5216         struct amdgpu_device *tmp_adev = NULL;
5217         int i, r = 0;
5218         bool need_emergency_restart = false;
5219         bool audio_suspended = false;
5220         bool gpu_reset_for_dev_remove = false;
5221
5222         gpu_reset_for_dev_remove =
5223                         test_bit(AMDGPU_RESET_FOR_DEVICE_REMOVE, &reset_context->flags) &&
5224                                 test_bit(AMDGPU_NEED_FULL_RESET, &reset_context->flags);
5225
5226         /*
5227          * Special case: RAS triggered and full reset isn't supported
5228          */
5229         need_emergency_restart = amdgpu_ras_need_emergency_restart(adev);
5230
5231         /*
5232          * Flush RAM to disk so that after reboot
5233          * the user can read log and see why the system rebooted.
5234          */
5235         if (need_emergency_restart && amdgpu_ras_get_context(adev)->reboot) {
5236                 DRM_WARN("Emergency reboot.");
5237
5238                 ksys_sync_helper();
5239                 emergency_restart();
5240         }
5241
5242         dev_info(adev->dev, "GPU %s begin!\n",
5243                 need_emergency_restart ? "jobs stop":"reset");
5244
5245         if (!amdgpu_sriov_vf(adev))
5246                 hive = amdgpu_get_xgmi_hive(adev);
5247         if (hive)
5248                 mutex_lock(&hive->hive_lock);
5249
5250         reset_context->job = job;
5251         reset_context->hive = hive;
5252         /*
5253          * Build list of devices to reset.
5254          * In case we are in XGMI hive mode, resort the device list
5255          * to put adev in the 1st position.
5256          */
5257         INIT_LIST_HEAD(&device_list);
5258         if (!amdgpu_sriov_vf(adev) && (adev->gmc.xgmi.num_physical_nodes > 1)) {
5259                 list_for_each_entry(tmp_adev, &hive->device_list, gmc.xgmi.head) {
5260                         list_add_tail(&tmp_adev->reset_list, &device_list);
5261                         if (gpu_reset_for_dev_remove && adev->shutdown)
5262                                 tmp_adev->shutdown = true;
5263                 }
5264                 if (!list_is_first(&adev->reset_list, &device_list))
5265                         list_rotate_to_front(&adev->reset_list, &device_list);
5266                 device_list_handle = &device_list;
5267         } else {
5268                 list_add_tail(&adev->reset_list, &device_list);
5269                 device_list_handle = &device_list;
5270         }
5271
5272         /* We need to lock reset domain only once both for XGMI and single device */
5273         tmp_adev = list_first_entry(device_list_handle, struct amdgpu_device,
5274                                     reset_list);
5275         amdgpu_device_lock_reset_domain(tmp_adev->reset_domain);
5276
5277         /* block all schedulers and reset given job's ring */
5278         list_for_each_entry(tmp_adev, device_list_handle, reset_list) {
5279
5280                 amdgpu_device_set_mp1_state(tmp_adev);
5281
5282                 /*
5283                  * Try to put the audio codec into suspend state
5284                  * before gpu reset started.
5285                  *
5286                  * Due to the power domain of the graphics device
5287                  * is shared with AZ power domain. Without this,
5288                  * we may change the audio hardware from behind
5289                  * the audio driver's back. That will trigger
5290                  * some audio codec errors.
5291                  */
5292                 if (!amdgpu_device_suspend_display_audio(tmp_adev))
5293                         audio_suspended = true;
5294
5295                 amdgpu_ras_set_error_query_ready(tmp_adev, false);
5296
5297                 cancel_delayed_work_sync(&tmp_adev->delayed_init_work);
5298
5299                 if (!amdgpu_sriov_vf(tmp_adev))
5300                         amdgpu_amdkfd_pre_reset(tmp_adev);
5301
5302                 /*
5303                  * Mark these ASICs to be reseted as untracked first
5304                  * And add them back after reset completed
5305                  */
5306                 amdgpu_unregister_gpu_instance(tmp_adev);
5307
5308                 drm_fb_helper_set_suspend_unlocked(adev_to_drm(tmp_adev)->fb_helper, true);
5309
5310                 /* disable ras on ALL IPs */
5311                 if (!need_emergency_restart &&
5312                       amdgpu_device_ip_need_full_reset(tmp_adev))
5313                         amdgpu_ras_suspend(tmp_adev);
5314
5315                 for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
5316                         struct amdgpu_ring *ring = tmp_adev->rings[i];
5317
5318                         if (!ring || !ring->sched.thread)
5319                                 continue;
5320
5321                         drm_sched_stop(&ring->sched, job ? &job->base : NULL);
5322
5323                         if (need_emergency_restart)
5324                                 amdgpu_job_stop_all_jobs_on_sched(&ring->sched);
5325                 }
5326                 atomic_inc(&tmp_adev->gpu_reset_counter);
5327         }
5328
5329         if (need_emergency_restart)
5330                 goto skip_sched_resume;
5331
5332         /*
5333          * Must check guilty signal here since after this point all old
5334          * HW fences are force signaled.
5335          *
5336          * job->base holds a reference to parent fence
5337          */
5338         if (job && dma_fence_is_signaled(&job->hw_fence)) {
5339                 job_signaled = true;
5340                 dev_info(adev->dev, "Guilty job already signaled, skipping HW reset");
5341                 goto skip_hw_reset;
5342         }
5343
5344 retry:  /* Rest of adevs pre asic reset from XGMI hive. */
5345         list_for_each_entry(tmp_adev, device_list_handle, reset_list) {
5346                 if (gpu_reset_for_dev_remove) {
5347                         /* Workaroud for ASICs need to disable SMC first */
5348                         amdgpu_device_smu_fini_early(tmp_adev);
5349                 }
5350                 r = amdgpu_device_pre_asic_reset(tmp_adev, reset_context);
5351                 /*TODO Should we stop ?*/
5352                 if (r) {
5353                         dev_err(tmp_adev->dev, "GPU pre asic reset failed with err, %d for drm dev, %s ",
5354                                   r, adev_to_drm(tmp_adev)->unique);
5355                         tmp_adev->asic_reset_res = r;
5356                 }
5357
5358                 /*
5359                  * Drop all pending non scheduler resets. Scheduler resets
5360                  * were already dropped during drm_sched_stop
5361                  */
5362                 amdgpu_device_stop_pending_resets(tmp_adev);
5363         }
5364
5365         /* Actual ASIC resets if needed.*/
5366         /* Host driver will handle XGMI hive reset for SRIOV */
5367         if (amdgpu_sriov_vf(adev)) {
5368                 r = amdgpu_device_reset_sriov(adev, job ? false : true);
5369                 if (r)
5370                         adev->asic_reset_res = r;
5371
5372                 /* Aldebaran and gfx_11_0_3 support ras in SRIOV, so need resume ras during reset */
5373                 if (adev->ip_versions[GC_HWIP][0] == IP_VERSION(9, 4, 2) ||
5374                     adev->ip_versions[GC_HWIP][0] == IP_VERSION(11, 0, 3))
5375                         amdgpu_ras_resume(adev);
5376         } else {
5377                 r = amdgpu_do_asic_reset(device_list_handle, reset_context);
5378                 if (r && r == -EAGAIN)
5379                         goto retry;
5380
5381                 if (!r && gpu_reset_for_dev_remove)
5382                         goto recover_end;
5383         }
5384
5385 skip_hw_reset:
5386
5387         /* Post ASIC reset for all devs .*/
5388         list_for_each_entry(tmp_adev, device_list_handle, reset_list) {
5389
5390                 for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
5391                         struct amdgpu_ring *ring = tmp_adev->rings[i];
5392
5393                         if (!ring || !ring->sched.thread)
5394                                 continue;
5395
5396                         drm_sched_start(&ring->sched, true);
5397                 }
5398
5399                 if (adev->enable_mes && adev->ip_versions[GC_HWIP][0] != IP_VERSION(11, 0, 3))
5400                         amdgpu_mes_self_test(tmp_adev);
5401
5402                 if (!drm_drv_uses_atomic_modeset(adev_to_drm(tmp_adev)) && !job_signaled) {
5403                         drm_helper_resume_force_mode(adev_to_drm(tmp_adev));
5404                 }
5405
5406                 if (tmp_adev->asic_reset_res)
5407                         r = tmp_adev->asic_reset_res;
5408
5409                 tmp_adev->asic_reset_res = 0;
5410
5411                 if (r) {
5412                         /* bad news, how to tell it to userspace ? */
5413                         dev_info(tmp_adev->dev, "GPU reset(%d) failed\n", atomic_read(&tmp_adev->gpu_reset_counter));
5414                         amdgpu_vf_error_put(tmp_adev, AMDGIM_ERROR_VF_GPU_RESET_FAIL, 0, r);
5415                 } else {
5416                         dev_info(tmp_adev->dev, "GPU reset(%d) succeeded!\n", atomic_read(&tmp_adev->gpu_reset_counter));
5417                         if (amdgpu_acpi_smart_shift_update(adev_to_drm(tmp_adev), AMDGPU_SS_DEV_D0))
5418                                 DRM_WARN("smart shift update failed\n");
5419                 }
5420         }
5421
5422 skip_sched_resume:
5423         list_for_each_entry(tmp_adev, device_list_handle, reset_list) {
5424                 /* unlock kfd: SRIOV would do it separately */
5425                 if (!need_emergency_restart && !amdgpu_sriov_vf(tmp_adev))
5426                         amdgpu_amdkfd_post_reset(tmp_adev);
5427
5428                 /* kfd_post_reset will do nothing if kfd device is not initialized,
5429                  * need to bring up kfd here if it's not be initialized before
5430                  */
5431                 if (!adev->kfd.init_complete)
5432                         amdgpu_amdkfd_device_init(adev);
5433
5434                 if (audio_suspended)
5435                         amdgpu_device_resume_display_audio(tmp_adev);
5436
5437                 amdgpu_device_unset_mp1_state(tmp_adev);
5438
5439                 amdgpu_ras_set_error_query_ready(tmp_adev, true);
5440         }
5441
5442 recover_end:
5443         tmp_adev = list_first_entry(device_list_handle, struct amdgpu_device,
5444                                             reset_list);
5445         amdgpu_device_unlock_reset_domain(tmp_adev->reset_domain);
5446
5447         if (hive) {
5448                 mutex_unlock(&hive->hive_lock);
5449                 amdgpu_put_xgmi_hive(hive);
5450         }
5451
5452         if (r)
5453                 dev_info(adev->dev, "GPU reset end with ret = %d\n", r);
5454
5455         atomic_set(&adev->reset_domain->reset_res, r);
5456         return r;
5457 }
5458
5459 /**
5460  * amdgpu_device_get_pcie_info - fence pcie info about the PCIE slot
5461  *
5462  * @adev: amdgpu_device pointer
5463  *
5464  * Fetchs and stores in the driver the PCIE capabilities (gen speed
5465  * and lanes) of the slot the device is in. Handles APUs and
5466  * virtualized environments where PCIE config space may not be available.
5467  */
5468 static void amdgpu_device_get_pcie_info(struct amdgpu_device *adev)
5469 {
5470         struct pci_dev *pdev;
5471         enum pci_bus_speed speed_cap, platform_speed_cap;
5472         enum pcie_link_width platform_link_width;
5473
5474         if (amdgpu_pcie_gen_cap)
5475                 adev->pm.pcie_gen_mask = amdgpu_pcie_gen_cap;
5476
5477         if (amdgpu_pcie_lane_cap)
5478                 adev->pm.pcie_mlw_mask = amdgpu_pcie_lane_cap;
5479
5480         /* covers APUs as well */
5481         if (pci_is_root_bus(adev->pdev->bus)) {
5482                 if (adev->pm.pcie_gen_mask == 0)
5483                         adev->pm.pcie_gen_mask = AMDGPU_DEFAULT_PCIE_GEN_MASK;
5484                 if (adev->pm.pcie_mlw_mask == 0)
5485                         adev->pm.pcie_mlw_mask = AMDGPU_DEFAULT_PCIE_MLW_MASK;
5486                 return;
5487         }
5488
5489         if (adev->pm.pcie_gen_mask && adev->pm.pcie_mlw_mask)
5490                 return;
5491
5492         pcie_bandwidth_available(adev->pdev, NULL,
5493                                  &platform_speed_cap, &platform_link_width);
5494
5495         if (adev->pm.pcie_gen_mask == 0) {
5496                 /* asic caps */
5497                 pdev = adev->pdev;
5498                 speed_cap = pcie_get_speed_cap(pdev);
5499                 if (speed_cap == PCI_SPEED_UNKNOWN) {
5500                         adev->pm.pcie_gen_mask |= (CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1 |
5501                                                   CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2 |
5502                                                   CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3);
5503                 } else {
5504                         if (speed_cap == PCIE_SPEED_32_0GT)
5505                                 adev->pm.pcie_gen_mask |= (CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1 |
5506                                                           CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2 |
5507                                                           CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3 |
5508                                                           CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN4 |
5509                                                           CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN5);
5510                         else if (speed_cap == PCIE_SPEED_16_0GT)
5511                                 adev->pm.pcie_gen_mask |= (CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1 |
5512                                                           CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2 |
5513                                                           CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3 |
5514                                                           CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN4);
5515                         else if (speed_cap == PCIE_SPEED_8_0GT)
5516                                 adev->pm.pcie_gen_mask |= (CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1 |
5517                                                           CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2 |
5518                                                           CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3);
5519                         else if (speed_cap == PCIE_SPEED_5_0GT)
5520                                 adev->pm.pcie_gen_mask |= (CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1 |
5521                                                           CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2);
5522                         else
5523                                 adev->pm.pcie_gen_mask |= CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1;
5524                 }
5525                 /* platform caps */
5526                 if (platform_speed_cap == PCI_SPEED_UNKNOWN) {
5527                         adev->pm.pcie_gen_mask |= (CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1 |
5528                                                    CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2);
5529                 } else {
5530                         if (platform_speed_cap == PCIE_SPEED_32_0GT)
5531                                 adev->pm.pcie_gen_mask |= (CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1 |
5532                                                            CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2 |
5533                                                            CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3 |
5534                                                            CAIL_PCIE_LINK_SPEED_SUPPORT_GEN4 |
5535                                                            CAIL_PCIE_LINK_SPEED_SUPPORT_GEN5);
5536                         else if (platform_speed_cap == PCIE_SPEED_16_0GT)
5537                                 adev->pm.pcie_gen_mask |= (CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1 |
5538                                                            CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2 |
5539                                                            CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3 |
5540                                                            CAIL_PCIE_LINK_SPEED_SUPPORT_GEN4);
5541                         else if (platform_speed_cap == PCIE_SPEED_8_0GT)
5542                                 adev->pm.pcie_gen_mask |= (CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1 |
5543                                                            CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2 |
5544                                                            CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3);
5545                         else if (platform_speed_cap == PCIE_SPEED_5_0GT)
5546                                 adev->pm.pcie_gen_mask |= (CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1 |
5547                                                            CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2);
5548                         else
5549                                 adev->pm.pcie_gen_mask |= CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1;
5550
5551                 }
5552         }
5553         if (adev->pm.pcie_mlw_mask == 0) {
5554                 if (platform_link_width == PCIE_LNK_WIDTH_UNKNOWN) {
5555                         adev->pm.pcie_mlw_mask |= AMDGPU_DEFAULT_PCIE_MLW_MASK;
5556                 } else {
5557                         switch (platform_link_width) {
5558                         case PCIE_LNK_X32:
5559                                 adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X32 |
5560                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X16 |
5561                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 |
5562                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 |
5563                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
5564                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
5565                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
5566                                 break;
5567                         case PCIE_LNK_X16:
5568                                 adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X16 |
5569                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 |
5570                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 |
5571                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
5572                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
5573                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
5574                                 break;
5575                         case PCIE_LNK_X12:
5576                                 adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 |
5577                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 |
5578                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
5579                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
5580                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
5581                                 break;
5582                         case PCIE_LNK_X8:
5583                                 adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 |
5584                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
5585                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
5586                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
5587                                 break;
5588                         case PCIE_LNK_X4:
5589                                 adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
5590                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
5591                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
5592                                 break;
5593                         case PCIE_LNK_X2:
5594                                 adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
5595                                                           CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
5596                                 break;
5597                         case PCIE_LNK_X1:
5598                                 adev->pm.pcie_mlw_mask = CAIL_PCIE_LINK_WIDTH_SUPPORT_X1;
5599                                 break;
5600                         default:
5601                                 break;
5602                         }
5603                 }
5604         }
5605 }
5606
5607 /**
5608  * amdgpu_device_is_peer_accessible - Check peer access through PCIe BAR
5609  *
5610  * @adev: amdgpu_device pointer
5611  * @peer_adev: amdgpu_device pointer for peer device trying to access @adev
5612  *
5613  * Return true if @peer_adev can access (DMA) @adev through the PCIe
5614  * BAR, i.e. @adev is "large BAR" and the BAR matches the DMA mask of
5615  * @peer_adev.
5616  */
5617 bool amdgpu_device_is_peer_accessible(struct amdgpu_device *adev,
5618                                       struct amdgpu_device *peer_adev)
5619 {
5620 #ifdef CONFIG_HSA_AMD_P2P
5621         uint64_t address_mask = peer_adev->dev->dma_mask ?
5622                 ~*peer_adev->dev->dma_mask : ~((1ULL << 32) - 1);
5623         resource_size_t aper_limit =
5624                 adev->gmc.aper_base + adev->gmc.aper_size - 1;
5625         bool p2p_access =
5626                 !adev->gmc.xgmi.connected_to_cpu &&
5627                 !(pci_p2pdma_distance(adev->pdev, peer_adev->dev, false) < 0);
5628
5629         return pcie_p2p && p2p_access && (adev->gmc.visible_vram_size &&
5630                 adev->gmc.real_vram_size == adev->gmc.visible_vram_size &&
5631                 !(adev->gmc.aper_base & address_mask ||
5632                   aper_limit & address_mask));
5633 #else
5634         return false;
5635 #endif
5636 }
5637
5638 int amdgpu_device_baco_enter(struct drm_device *dev)
5639 {
5640         struct amdgpu_device *adev = drm_to_adev(dev);
5641         struct amdgpu_ras *ras = amdgpu_ras_get_context(adev);
5642
5643         if (!amdgpu_device_supports_baco(dev))
5644                 return -ENOTSUPP;
5645
5646         if (ras && adev->ras_enabled &&
5647             adev->nbio.funcs->enable_doorbell_interrupt)
5648                 adev->nbio.funcs->enable_doorbell_interrupt(adev, false);
5649
5650         return amdgpu_dpm_baco_enter(adev);
5651 }
5652
5653 int amdgpu_device_baco_exit(struct drm_device *dev)
5654 {
5655         struct amdgpu_device *adev = drm_to_adev(dev);
5656         struct amdgpu_ras *ras = amdgpu_ras_get_context(adev);
5657         int ret = 0;
5658
5659         if (!amdgpu_device_supports_baco(dev))
5660                 return -ENOTSUPP;
5661
5662         ret = amdgpu_dpm_baco_exit(adev);
5663         if (ret)
5664                 return ret;
5665
5666         if (ras && adev->ras_enabled &&
5667             adev->nbio.funcs->enable_doorbell_interrupt)
5668                 adev->nbio.funcs->enable_doorbell_interrupt(adev, true);
5669
5670         if (amdgpu_passthrough(adev) &&
5671             adev->nbio.funcs->clear_doorbell_interrupt)
5672                 adev->nbio.funcs->clear_doorbell_interrupt(adev);
5673
5674         return 0;
5675 }
5676
5677 /**
5678  * amdgpu_pci_error_detected - Called when a PCI error is detected.
5679  * @pdev: PCI device struct
5680  * @state: PCI channel state
5681  *
5682  * Description: Called when a PCI error is detected.
5683  *
5684  * Return: PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT.
5685  */
5686 pci_ers_result_t amdgpu_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
5687 {
5688         struct drm_device *dev = pci_get_drvdata(pdev);
5689         struct amdgpu_device *adev = drm_to_adev(dev);
5690         int i;
5691
5692         DRM_INFO("PCI error: detected callback, state(%d)!!\n", state);
5693
5694         if (adev->gmc.xgmi.num_physical_nodes > 1) {
5695                 DRM_WARN("No support for XGMI hive yet...");
5696                 return PCI_ERS_RESULT_DISCONNECT;
5697         }
5698
5699         adev->pci_channel_state = state;
5700
5701         switch (state) {
5702         case pci_channel_io_normal:
5703                 return PCI_ERS_RESULT_CAN_RECOVER;
5704         /* Fatal error, prepare for slot reset */
5705         case pci_channel_io_frozen:
5706                 /*
5707                  * Locking adev->reset_domain->sem will prevent any external access
5708                  * to GPU during PCI error recovery
5709                  */
5710                 amdgpu_device_lock_reset_domain(adev->reset_domain);
5711                 amdgpu_device_set_mp1_state(adev);
5712
5713                 /*
5714                  * Block any work scheduling as we do for regular GPU reset
5715                  * for the duration of the recovery
5716                  */
5717                 for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
5718                         struct amdgpu_ring *ring = adev->rings[i];
5719
5720                         if (!ring || !ring->sched.thread)
5721                                 continue;
5722
5723                         drm_sched_stop(&ring->sched, NULL);
5724                 }
5725                 atomic_inc(&adev->gpu_reset_counter);
5726                 return PCI_ERS_RESULT_NEED_RESET;
5727         case pci_channel_io_perm_failure:
5728                 /* Permanent error, prepare for device removal */
5729                 return PCI_ERS_RESULT_DISCONNECT;
5730         }
5731
5732         return PCI_ERS_RESULT_NEED_RESET;
5733 }
5734
5735 /**
5736  * amdgpu_pci_mmio_enabled - Enable MMIO and dump debug registers
5737  * @pdev: pointer to PCI device
5738  */
5739 pci_ers_result_t amdgpu_pci_mmio_enabled(struct pci_dev *pdev)
5740 {
5741
5742         DRM_INFO("PCI error: mmio enabled callback!!\n");
5743
5744         /* TODO - dump whatever for debugging purposes */
5745
5746         /* This called only if amdgpu_pci_error_detected returns
5747          * PCI_ERS_RESULT_CAN_RECOVER. Read/write to the device still
5748          * works, no need to reset slot.
5749          */
5750
5751         return PCI_ERS_RESULT_RECOVERED;
5752 }
5753
5754 /**
5755  * amdgpu_pci_slot_reset - Called when PCI slot has been reset.
5756  * @pdev: PCI device struct
5757  *
5758  * Description: This routine is called by the pci error recovery
5759  * code after the PCI slot has been reset, just before we
5760  * should resume normal operations.
5761  */
5762 pci_ers_result_t amdgpu_pci_slot_reset(struct pci_dev *pdev)
5763 {
5764         struct drm_device *dev = pci_get_drvdata(pdev);
5765         struct amdgpu_device *adev = drm_to_adev(dev);
5766         int r, i;
5767         struct amdgpu_reset_context reset_context;
5768         u32 memsize;
5769         struct list_head device_list;
5770
5771         DRM_INFO("PCI error: slot reset callback!!\n");
5772
5773         memset(&reset_context, 0, sizeof(reset_context));
5774
5775         INIT_LIST_HEAD(&device_list);
5776         list_add_tail(&adev->reset_list, &device_list);
5777
5778         /* wait for asic to come out of reset */
5779         msleep(500);
5780
5781         /* Restore PCI confspace */
5782         amdgpu_device_load_pci_state(pdev);
5783
5784         /* confirm  ASIC came out of reset */
5785         for (i = 0; i < adev->usec_timeout; i++) {
5786                 memsize = amdgpu_asic_get_config_memsize(adev);
5787
5788                 if (memsize != 0xffffffff)
5789                         break;
5790                 udelay(1);
5791         }
5792         if (memsize == 0xffffffff) {
5793                 r = -ETIME;
5794                 goto out;
5795         }
5796
5797         reset_context.method = AMD_RESET_METHOD_NONE;
5798         reset_context.reset_req_dev = adev;
5799         set_bit(AMDGPU_NEED_FULL_RESET, &reset_context.flags);
5800         set_bit(AMDGPU_SKIP_HW_RESET, &reset_context.flags);
5801
5802         adev->no_hw_access = true;
5803         r = amdgpu_device_pre_asic_reset(adev, &reset_context);
5804         adev->no_hw_access = false;
5805         if (r)
5806                 goto out;
5807
5808         r = amdgpu_do_asic_reset(&device_list, &reset_context);
5809
5810 out:
5811         if (!r) {
5812                 if (amdgpu_device_cache_pci_state(adev->pdev))
5813                         pci_restore_state(adev->pdev);
5814
5815                 DRM_INFO("PCIe error recovery succeeded\n");
5816         } else {
5817                 DRM_ERROR("PCIe error recovery failed, err:%d", r);
5818                 amdgpu_device_unset_mp1_state(adev);
5819                 amdgpu_device_unlock_reset_domain(adev->reset_domain);
5820         }
5821
5822         return r ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
5823 }
5824
5825 /**
5826  * amdgpu_pci_resume() - resume normal ops after PCI reset
5827  * @pdev: pointer to PCI device
5828  *
5829  * Called when the error recovery driver tells us that its
5830  * OK to resume normal operation.
5831  */
5832 void amdgpu_pci_resume(struct pci_dev *pdev)
5833 {
5834         struct drm_device *dev = pci_get_drvdata(pdev);
5835         struct amdgpu_device *adev = drm_to_adev(dev);
5836         int i;
5837
5838
5839         DRM_INFO("PCI error: resume callback!!\n");
5840
5841         /* Only continue execution for the case of pci_channel_io_frozen */
5842         if (adev->pci_channel_state != pci_channel_io_frozen)
5843                 return;
5844
5845         for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
5846                 struct amdgpu_ring *ring = adev->rings[i];
5847
5848                 if (!ring || !ring->sched.thread)
5849                         continue;
5850
5851                 drm_sched_start(&ring->sched, true);
5852         }
5853
5854         amdgpu_device_unset_mp1_state(adev);
5855         amdgpu_device_unlock_reset_domain(adev->reset_domain);
5856 }
5857
5858 bool amdgpu_device_cache_pci_state(struct pci_dev *pdev)
5859 {
5860         struct drm_device *dev = pci_get_drvdata(pdev);
5861         struct amdgpu_device *adev = drm_to_adev(dev);
5862         int r;
5863
5864         r = pci_save_state(pdev);
5865         if (!r) {
5866                 kfree(adev->pci_state);
5867
5868                 adev->pci_state = pci_store_saved_state(pdev);
5869
5870                 if (!adev->pci_state) {
5871                         DRM_ERROR("Failed to store PCI saved state");
5872                         return false;
5873                 }
5874         } else {
5875                 DRM_WARN("Failed to save PCI state, err:%d\n", r);
5876                 return false;
5877         }
5878
5879         return true;
5880 }
5881
5882 bool amdgpu_device_load_pci_state(struct pci_dev *pdev)
5883 {
5884         struct drm_device *dev = pci_get_drvdata(pdev);
5885         struct amdgpu_device *adev = drm_to_adev(dev);
5886         int r;
5887
5888         if (!adev->pci_state)
5889                 return false;
5890
5891         r = pci_load_saved_state(pdev, adev->pci_state);
5892
5893         if (!r) {
5894                 pci_restore_state(pdev);
5895         } else {
5896                 DRM_WARN("Failed to load PCI state, err:%d\n", r);
5897                 return false;
5898         }
5899
5900         return true;
5901 }
5902
5903 void amdgpu_device_flush_hdp(struct amdgpu_device *adev,
5904                 struct amdgpu_ring *ring)
5905 {
5906 #ifdef CONFIG_X86_64
5907         if ((adev->flags & AMD_IS_APU) && !amdgpu_passthrough(adev))
5908                 return;
5909 #endif
5910         if (adev->gmc.xgmi.connected_to_cpu)
5911                 return;
5912
5913         if (ring && ring->funcs->emit_hdp_flush)
5914                 amdgpu_ring_emit_hdp_flush(ring);
5915         else
5916                 amdgpu_asic_flush_hdp(adev, ring);
5917 }
5918
5919 void amdgpu_device_invalidate_hdp(struct amdgpu_device *adev,
5920                 struct amdgpu_ring *ring)
5921 {
5922 #ifdef CONFIG_X86_64
5923         if ((adev->flags & AMD_IS_APU) && !amdgpu_passthrough(adev))
5924                 return;
5925 #endif
5926         if (adev->gmc.xgmi.connected_to_cpu)
5927                 return;
5928
5929         amdgpu_asic_invalidate_hdp(adev, ring);
5930 }
5931
5932 int amdgpu_in_reset(struct amdgpu_device *adev)
5933 {
5934         return atomic_read(&adev->reset_domain->in_gpu_reset);
5935 }
5936
5937 /**
5938  * amdgpu_device_halt() - bring hardware to some kind of halt state
5939  *
5940  * @adev: amdgpu_device pointer
5941  *
5942  * Bring hardware to some kind of halt state so that no one can touch it
5943  * any more. It will help to maintain error context when error occurred.
5944  * Compare to a simple hang, the system will keep stable at least for SSH
5945  * access. Then it should be trivial to inspect the hardware state and
5946  * see what's going on. Implemented as following:
5947  *
5948  * 1. drm_dev_unplug() makes device inaccessible to user space(IOCTLs, etc),
5949  *    clears all CPU mappings to device, disallows remappings through page faults
5950  * 2. amdgpu_irq_disable_all() disables all interrupts
5951  * 3. amdgpu_fence_driver_hw_fini() signals all HW fences
5952  * 4. set adev->no_hw_access to avoid potential crashes after setp 5
5953  * 5. amdgpu_device_unmap_mmio() clears all MMIO mappings
5954  * 6. pci_disable_device() and pci_wait_for_pending_transaction()
5955  *    flush any in flight DMA operations
5956  */
5957 void amdgpu_device_halt(struct amdgpu_device *adev)
5958 {
5959         struct pci_dev *pdev = adev->pdev;
5960         struct drm_device *ddev = adev_to_drm(adev);
5961
5962         drm_dev_unplug(ddev);
5963
5964         amdgpu_irq_disable_all(adev);
5965
5966         amdgpu_fence_driver_hw_fini(adev);
5967
5968         adev->no_hw_access = true;
5969
5970         amdgpu_device_unmap_mmio(adev);
5971
5972         pci_disable_device(pdev);
5973         pci_wait_for_pending_transaction(pdev);
5974 }
5975
5976 u32 amdgpu_device_pcie_port_rreg(struct amdgpu_device *adev,
5977                                 u32 reg)
5978 {
5979         unsigned long flags, address, data;
5980         u32 r;
5981
5982         address = adev->nbio.funcs->get_pcie_port_index_offset(adev);
5983         data = adev->nbio.funcs->get_pcie_port_data_offset(adev);
5984
5985         spin_lock_irqsave(&adev->pcie_idx_lock, flags);
5986         WREG32(address, reg * 4);
5987         (void)RREG32(address);
5988         r = RREG32(data);
5989         spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
5990         return r;
5991 }
5992
5993 void amdgpu_device_pcie_port_wreg(struct amdgpu_device *adev,
5994                                 u32 reg, u32 v)
5995 {
5996         unsigned long flags, address, data;
5997
5998         address = adev->nbio.funcs->get_pcie_port_index_offset(adev);
5999         data = adev->nbio.funcs->get_pcie_port_data_offset(adev);
6000
6001         spin_lock_irqsave(&adev->pcie_idx_lock, flags);
6002         WREG32(address, reg * 4);
6003         (void)RREG32(address);
6004         WREG32(data, v);
6005         (void)RREG32(data);
6006         spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
6007 }
6008
6009 /**
6010  * amdgpu_device_switch_gang - switch to a new gang
6011  * @adev: amdgpu_device pointer
6012  * @gang: the gang to switch to
6013  *
6014  * Try to switch to a new gang.
6015  * Returns: NULL if we switched to the new gang or a reference to the current
6016  * gang leader.
6017  */
6018 struct dma_fence *amdgpu_device_switch_gang(struct amdgpu_device *adev,
6019                                             struct dma_fence *gang)
6020 {
6021         struct dma_fence *old = NULL;
6022
6023         do {
6024                 dma_fence_put(old);
6025                 rcu_read_lock();
6026                 old = dma_fence_get_rcu_safe(&adev->gang_submit);
6027                 rcu_read_unlock();
6028
6029                 if (old == gang)
6030                         break;
6031
6032                 if (!dma_fence_is_signaled(old))
6033                         return old;
6034
6035         } while (cmpxchg((struct dma_fence __force **)&adev->gang_submit,
6036                          old, gang) != old);
6037
6038         dma_fence_put(old);
6039         return NULL;
6040 }
6041
6042 bool amdgpu_device_has_display_hardware(struct amdgpu_device *adev)
6043 {
6044         switch (adev->asic_type) {
6045 #ifdef CONFIG_DRM_AMDGPU_SI
6046         case CHIP_HAINAN:
6047 #endif
6048         case CHIP_TOPAZ:
6049                 /* chips with no display hardware */
6050                 return false;
6051 #ifdef CONFIG_DRM_AMDGPU_SI
6052         case CHIP_TAHITI:
6053         case CHIP_PITCAIRN:
6054         case CHIP_VERDE:
6055         case CHIP_OLAND:
6056 #endif
6057 #ifdef CONFIG_DRM_AMDGPU_CIK
6058         case CHIP_BONAIRE:
6059         case CHIP_HAWAII:
6060         case CHIP_KAVERI:
6061         case CHIP_KABINI:
6062         case CHIP_MULLINS:
6063 #endif
6064         case CHIP_TONGA:
6065         case CHIP_FIJI:
6066         case CHIP_POLARIS10:
6067         case CHIP_POLARIS11:
6068         case CHIP_POLARIS12:
6069         case CHIP_VEGAM:
6070         case CHIP_CARRIZO:
6071         case CHIP_STONEY:
6072                 /* chips with display hardware */
6073                 return true;
6074         default:
6075                 /* IP discovery */
6076                 if (!adev->ip_versions[DCE_HWIP][0] ||
6077                     (adev->harvest_ip_mask & AMD_HARVEST_IP_DMU_MASK))
6078                         return false;
6079                 return true;
6080         }
6081 }