=========================
   drm/amdgpu AMDgpu driver
  =========================
  
  The drm/amdgpu driver supports all AMD Radeon GPUs based on the Graphics Core
  Next (GCN) architecture.

  Module Parameters
  =================
  
  The amdgpu driver supports the following module parameters:
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

  Core Driver Infrastructure
  ==========================
  
  This section covers core driver infrastructure.

  .. _amdgpu_memory_domains:
  
  Memory Domains
  --------------
  
  .. kernel-doc:: include/uapi/drm/amdgpu_drm.h
     :doc: memory domains

  Buffer Objects
  --------------
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
     :doc: amdgpu_object
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
     :internal:

  PRIME Buffer Sharing
  --------------------

  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c

     :doc: PRIME Buffer Sharing

  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c

     :internal:

  
  MMU Notifier
  ------------
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c
     :doc: MMU Notifier
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c
     :internal:

  
  AMDGPU Virtual Memory
  ---------------------
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
     :doc: GPUVM
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c

     :internal:

  
  Interrupt Handling
  ------------------
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
     :doc: Interrupt Handling
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c

     :internal:

  IP Blocks
  ------------------
  
  .. kernel-doc:: drivers/gpu/drm/amd/include/amd_shared.h
     :doc: IP Blocks
  
  .. kernel-doc:: drivers/gpu/drm/amd/include/amd_shared.h
     :identifiers: amd_ip_block_type amd_ip_funcs

  AMDGPU XGMI Support
  ===================
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c

  AMDGPU RAS Support
  ==================

  The AMDGPU RAS interfaces are exposed via sysfs (for informational queries) and
  debugfs (for error injection).

  RAS debugfs/sysfs Control and Error Injection Interfaces
  --------------------------------------------------------

  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
     :doc: AMDGPU RAS debugfs control interface

  RAS Reboot Behavior for Unrecoverable Errors
  --------------------------------------------------------
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
     :doc: AMDGPU RAS Reboot Behavior for Unrecoverable Errors

  RAS Error Count sysfs Interface
  -------------------------------
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
     :doc: AMDGPU RAS sysfs Error Count Interface
  
  RAS EEPROM debugfs Interface
  ----------------------------
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
     :doc: AMDGPU RAS debugfs EEPROM table reset interface
  
  RAS VRAM Bad Pages sysfs Interface
  ----------------------------------
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
     :doc: AMDGPU RAS sysfs gpu_vram_bad_pages Interface

  Sample Code
  -----------
  Sample code for testing error injection can be found here:
  https://cgit.freedesktop.org/mesa/drm/tree/tests/amdgpu/ras_tests.c
  
  This is part of the libdrm amdgpu unit tests which cover several areas of the GPU.
  There are four sets of tests:
  
  RAS Basic Test
  
  The test verifies the RAS feature enabled status and makes sure the necessary sysfs and debugfs files
  are present.
  
  RAS Query Test
  
  This test checks the RAS availability and enablement status for each supported IP block as well as
  the error counts.
  
  RAS Inject Test
  
  This test injects errors for each IP.
  
  RAS Disable Test
  
  This test tests disabling of RAS features for each IP block.

  GPU Power/Thermal Controls and Monitoring
  =========================================
  
  This section covers hwmon and power/thermal controls.
  
  HWMON Interfaces
  ----------------

  .. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c

     :doc: hwmon
  
  GPU sysfs Power State Interfaces
  --------------------------------
  
  GPU power controls are exposed via sysfs files.
  
  power_dpm_state
  ~~~~~~~~~~~~~~~

  .. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c

     :doc: power_dpm_state
  
  power_dpm_force_performance_level
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

  .. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c

     :doc: power_dpm_force_performance_level
  
  pp_table
  ~~~~~~~~

  .. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c

     :doc: pp_table
  
  pp_od_clk_voltage
  ~~~~~~~~~~~~~~~~~

  .. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c

     :doc: pp_od_clk_voltage

  pp_dpm_*
  ~~~~~~~~

  .. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c

     :doc: pp_dpm_sclk pp_dpm_mclk pp_dpm_socclk pp_dpm_fclk pp_dpm_dcefclk pp_dpm_pcie

  
  pp_power_profile_mode
  ~~~~~~~~~~~~~~~~~~~~~

  .. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c

     :doc: pp_power_profile_mode

  \*_busy_percent
  ~~~~~~~~~~~~~~~

  .. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c

     :doc: gpu_busy_percent

  .. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c

     :doc: mem_busy_percent

  gpu_metrics
  ~~~~~~~~~~~~~~~~~~~~~

  .. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c

     :doc: gpu_metrics

  GPU Product Information
  =======================
  
  Information about the GPU can be obtained on certain cards
  via sysfs
  
  product_name
  ------------
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
     :doc: product_name
  
  product_number
  --------------
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
     :doc: product_name
  
  serial_number
  -------------
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
     :doc: serial_number

  unique_id
  ---------

  .. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c

     :doc: unique_id

  GPU Memory Usage Information
  ============================
  
  Various memory accounting can be accessed via sysfs
  
  mem_info_vram_total
  -------------------
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
     :doc: mem_info_vram_total
  
  mem_info_vram_used
  ------------------
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
     :doc: mem_info_vram_used
  
  mem_info_vis_vram_total
  -----------------------
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
     :doc: mem_info_vis_vram_total
  
  mem_info_vis_vram_used
  ----------------------
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
     :doc: mem_info_vis_vram_used
  
  mem_info_gtt_total

  ------------------

  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
     :doc: mem_info_gtt_total
  
  mem_info_gtt_used

  -----------------

  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
     :doc: mem_info_gtt_used

  
  PCIe Accounting Information
  ===========================
  
  pcie_bw
  -------

  .. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c

     :doc: pcie_bw
  
  pcie_replay_count
  -----------------
  
  .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
     :doc: pcie_replay_count