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authorDave Airlie <airlied@redhat.com>2021-12-23 02:55:28 +0100
committerDave Airlie <airlied@redhat.com>2021-12-23 02:55:28 +0100
commitb06103b5325364e0b9944024db41b400b9028df9 (patch)
treebf63e9dac4061df03f98d3d0dd85e47ddc24c9da /Documentation/gpu
parentMerge tag 'mediatek-drm-next-5.17' of https://git.kernel.org/pub/scm/linux/ke... (diff)
parentdrm/radeon: Fix syntax errors in comments (diff)
downloadlinux-b06103b5325364e0b9944024db41b400b9028df9.tar.xz
linux-b06103b5325364e0b9944024db41b400b9028df9.zip
Merge tag 'amd-drm-next-5.17-2021-12-16' of https://gitlab.freedesktop.org/agd5f/linux into drm-next
amdgpu: - Add some display debugfs entries - RAS fixes - SR-IOV fixes - W=1 fixes - Documentation fixes - IH timestamp fix - Misc power fixes - IP discovery fixes - Large driver documentation updates - Multi-GPU memory use reductions - Misc display fixes and cleanups - Add new SMU debug option amdkfd: - SVM fixes radeon: - Fix typo in comment From: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20211216202731.5900-1-alexander.deucher@amd.com
Diffstat (limited to 'Documentation/gpu')
-rw-r--r--Documentation/gpu/amdgpu-dc.rst74
-rw-r--r--Documentation/gpu/amdgpu.rst324
-rw-r--r--Documentation/gpu/amdgpu/amdgpu-glossary.rst87
-rw-r--r--Documentation/gpu/amdgpu/display/config_example.svg414
-rw-r--r--Documentation/gpu/amdgpu/display/dc-debug.rst77
-rw-r--r--Documentation/gpu/amdgpu/display/dc-glossary.rst237
-rw-r--r--Documentation/gpu/amdgpu/display/dc_pipeline_overview.svg1125
-rw-r--r--Documentation/gpu/amdgpu/display/dcn-overview.rst171
-rw-r--r--Documentation/gpu/amdgpu/display/display-manager.rst42
-rw-r--r--Documentation/gpu/amdgpu/display/global_sync_vblank.svg485
-rw-r--r--Documentation/gpu/amdgpu/display/index.rst31
-rw-r--r--Documentation/gpu/amdgpu/driver-core.rst182
-rw-r--r--Documentation/gpu/amdgpu/driver-misc.rst112
-rw-r--r--Documentation/gpu/amdgpu/index.rst17
-rw-r--r--Documentation/gpu/amdgpu/module-parameters.rst7
-rw-r--r--Documentation/gpu/amdgpu/ras.rst62
-rw-r--r--Documentation/gpu/amdgpu/thermal.rst65
-rw-r--r--Documentation/gpu/amdgpu/xgmi.rst5
-rw-r--r--Documentation/gpu/drivers.rst3
19 files changed, 3120 insertions, 400 deletions
diff --git a/Documentation/gpu/amdgpu-dc.rst b/Documentation/gpu/amdgpu-dc.rst
deleted file mode 100644
index f7ff7e1309de..000000000000
--- a/Documentation/gpu/amdgpu-dc.rst
+++ /dev/null
@@ -1,74 +0,0 @@
-===================================
-drm/amd/display - Display Core (DC)
-===================================
-
-*placeholder - general description of supported platforms, what dc is, etc.*
-
-Because it is partially shared with other operating systems, the Display Core
-Driver is divided in two pieces.
-
-1. **Display Core (DC)** contains the OS-agnostic components. Things like
- hardware programming and resource management are handled here.
-2. **Display Manager (DM)** contains the OS-dependent components. Hooks to the
- amdgpu base driver and DRM are implemented here.
-
-It doesn't help that the entire package is frequently referred to as DC. But
-with the context in mind, it should be clear.
-
-When CONFIG_DRM_AMD_DC is enabled, DC will be initialized by default for
-supported ASICs. To force disable, set `amdgpu.dc=0` on kernel command line.
-Likewise, to force enable on unsupported ASICs, set `amdgpu.dc=1`.
-
-To determine if DC is loaded, search dmesg for the following entry:
-
-``Display Core initialized with <version number here>``
-
-AMDgpu Display Manager
-======================
-
-.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
- :doc: overview
-
-.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
- :internal:
-
-Lifecycle
----------
-
-.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
- :doc: DM Lifecycle
-
-.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
- :functions: dm_hw_init dm_hw_fini
-
-Interrupts
-----------
-
-.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c
- :doc: overview
-
-.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c
- :internal:
-
-.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
- :functions: register_hpd_handlers dm_crtc_high_irq dm_pflip_high_irq
-
-Atomic Implementation
----------------------
-
-.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
- :doc: atomic
-
-.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
- :functions: amdgpu_dm_atomic_check amdgpu_dm_atomic_commit_tail
-
-Display Core
-============
-
-**WIP**
-
-FreeSync Video
---------------
-
-.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
- :doc: FreeSync Video
diff --git a/Documentation/gpu/amdgpu.rst b/Documentation/gpu/amdgpu.rst
deleted file mode 100644
index 8ba72e898099..000000000000
--- a/Documentation/gpu/amdgpu.rst
+++ /dev/null
@@ -1,324 +0,0 @@
-=========================
- 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
-
-GPU SmartShift Information
-==========================
-
-GPU SmartShift information via sysfs
-
-smartshift_apu_power
---------------------
-
-.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
- :doc: smartshift_apu_power
-
-smartshift_dgpu_power
----------------------
-
-.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
- :doc: smartshift_dgpu_power
-
-smartshift_bias
----------------
-
-.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
- :doc: smartshift_bias
diff --git a/Documentation/gpu/amdgpu/amdgpu-glossary.rst b/Documentation/gpu/amdgpu/amdgpu-glossary.rst
new file mode 100644
index 000000000000..859dcec6c6f9
--- /dev/null
+++ b/Documentation/gpu/amdgpu/amdgpu-glossary.rst
@@ -0,0 +1,87 @@
+===============
+AMDGPU Glossary
+===============
+
+Here you can find some generic acronyms used in the amdgpu driver. Notice that
+we have a dedicated glossary for Display Core at
+'Documentation/gpu/amdgpu/display/dc-glossary.rst'.
+
+.. glossary::
+
+ CP
+ Command Processor
+
+ CPLIB
+ Content Protection Library
+
+ DFS
+ Digital Frequency Synthesizer
+
+ ECP
+ Enhanced Content Protection
+
+ EOP
+ End Of Pipe/Pipeline
+
+ GC
+ Graphics and Compute
+
+ GMC
+ Graphic Memory Controller
+
+ IH
+ Interrupt Handler
+
+ HQD
+ Hardware Queue Descriptor
+
+ IB
+ Indirect Buffer
+
+ IP
+ Intellectual Property blocks
+
+ KCQ
+ Kernel Compute Queue
+
+ KGQ
+ Kernel Graphics Queue
+
+ KIQ
+ Kernel Interface Queue
+
+ MEC
+ MicroEngine Compute
+
+ MES
+ MicroEngine Scheduler
+
+ MMHUB
+ Multi-Media HUB
+
+ MQD
+ Memory Queue Descriptor
+
+ PPLib
+ PowerPlay Library - PowerPlay is the power management component.
+
+ PSP
+ Platform Security Processor
+
+ RCL
+ RunList Controller
+
+ SDMA
+ System DMA
+
+ SMU
+ System Management Unit
+
+ SS
+ Spread Spectrum
+
+ VCE
+ Video Compression Engine
+
+ VCN
+ Video Codec Next
diff --git a/Documentation/gpu/amdgpu/display/config_example.svg b/Documentation/gpu/amdgpu/display/config_example.svg
new file mode 100644
index 000000000000..cdac9858601c
--- /dev/null
+++ b/Documentation/gpu/amdgpu/display/config_example.svg
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diff --git a/Documentation/gpu/amdgpu/display/dc-debug.rst b/Documentation/gpu/amdgpu/display/dc-debug.rst
new file mode 100644
index 000000000000..40c55a618918
--- /dev/null
+++ b/Documentation/gpu/amdgpu/display/dc-debug.rst
@@ -0,0 +1,77 @@
+========================
+Display Core Debug tools
+========================
+
+DC Visual Confirmation
+======================
+
+Display core provides a feature named visual confirmation, which is a set of
+bars added at the scanout time by the driver to convey some specific
+information. In general, you can enable this debug option by using::
+
+ echo <N> > /sys/kernel/debug/dri/0/amdgpu_dm_visual_confirm
+
+Where `N` is an integer number for some specific scenarios that the developer
+wants to enable, you will see some of these debug cases in the following
+subsection.
+
+Multiple Planes Debug
+---------------------
+
+If you want to enable or debug multiple planes in a specific user-space
+application, you can leverage a debug feature named visual confirm. For
+enabling it, you will need::
+
+ echo 1 > /sys/kernel/debug/dri/0/amdgpu_dm_visual_confirm
+
+You need to reload your GUI to see the visual confirmation. When the plane
+configuration changes or a full update occurs there will be a colored bar at
+the bottom of each hardware plane being drawn on the screen.
+
+* The color indicates the format - For example, red is AR24 and green is NV12
+* The height of the bar indicates the index of the plane
+* Pipe split can be observed if there are two bars with a difference in height
+ covering the same plane
+
+Consider the video playback case in which a video is played in a specific
+plane, and the desktop is drawn in another plane. The video plane should
+feature one or two green bars at the bottom of the video depending on pipe
+split configuration.
+
+* There should **not** be any visual corruption
+* There should **not** be any underflow or screen flashes
+* There should **not** be any black screens
+* There should **not** be any cursor corruption
+* Multiple plane **may** be briefly disabled during window transitions or
+ resizing but should come back after the action has finished
+
+Pipe Split Debug
+----------------
+
+Sometimes we need to debug if DCN is splitting pipes correctly, and visual
+confirmation is also handy for this case. Similar to the MPO case, you can use
+the below command to enable visual confirmation::
+
+ echo 1 > /sys/kernel/debug/dri/0/amdgpu_dm_visual_confirm
+
+In this case, if you have a pipe split, you will see one small red bar at the
+bottom of the display covering the entire display width and another bar
+covering the second pipe. In other words, you will see a bit high bar in the
+second pipe.
+
+DTN Debug
+=========
+
+DC (DCN) provides an extensive log that dumps multiple details from our
+hardware configuration. Via debugfs, you can capture those status values by
+using Display Test Next (DTN) log, which can be captured via debugfs by using::
+
+ cat /sys/kernel/debug/dri/0/amdgpu_dm_dtn_log
+
+Since this log is updated accordingly with DCN status, you can also follow the
+change in real-time by using something like::
+
+ sudo watch -d cat /sys/kernel/debug/dri/0/amdgpu_dm_dtn_log
+
+When reporting a bug related to DC, consider attaching this log before and
+after you reproduce the bug.
diff --git a/Documentation/gpu/amdgpu/display/dc-glossary.rst b/Documentation/gpu/amdgpu/display/dc-glossary.rst
new file mode 100644
index 000000000000..116f5f0942fd
--- /dev/null
+++ b/Documentation/gpu/amdgpu/display/dc-glossary.rst
@@ -0,0 +1,237 @@
+===========
+DC Glossary
+===========
+
+On this page, we try to keep track of acronyms related to the display
+component. If you do not find what you are looking for, look at the
+'Documentation/gpu/amdgpu/amdgpu-glossary.rst'; if you cannot find it anywhere,
+consider asking in the amdgfx and update this page.
+
+.. glossary::
+
+ ABM
+ Adaptive Backlight Modulation
+
+ APU
+ Accelerated Processing Unit
+
+ ASIC
+ Application-Specific Integrated Circuit
+
+ ASSR
+ Alternate Scrambler Seed Reset
+
+ AZ
+ Azalia (HD audio DMA engine)
+
+ BPC
+ Bits Per Colour/Component
+
+ BPP
+ Bits Per Pixel
+
+ Clocks
+ * PCLK: Pixel Clock
+ * SYMCLK: Symbol Clock
+ * SOCCLK: GPU Engine Clock
+ * DISPCLK: Display Clock
+ * DPPCLK: DPP Clock
+ * DCFCLK: Display Controller Fabric Clock
+ * REFCLK: Real Time Reference Clock
+ * PPLL: Pixel PLL
+ * FCLK: Fabric Clock
+ * MCLK: Memory Clock
+
+ CRC
+ Cyclic Redundancy Check
+
+ CRTC
+ Cathode Ray Tube Controller - commonly called "Controller" - Generates
+ raw stream of pixels, clocked at pixel clock
+
+ CVT
+ Coordinated Video Timings
+
+ DAL
+ Display Abstraction layer
+
+ DC (Software)
+ Display Core
+
+ DC (Hardware)
+ Display Controller
+
+ DCC
+ Delta Colour Compression
+
+ DCE
+ Display Controller Engine
+
+ DCHUB
+ Display Controller HUB
+
+ ARB
+ Arbiter
+
+ VTG
+ Vertical Timing Generator
+
+ DCN
+ Display Core Next
+
+ DCCG
+ Display Clock Generator block
+
+ DDC
+ Display Data Channel
+
+ DIO
+ Display IO
+
+ DPP
+ Display Pipes and Planes
+
+ DSC
+ Display Stream Compression (Reduce the amount of bits to represent pixel
+ count while at the same pixel clock)
+
+ dGPU
+ discrete GPU
+
+ DMIF
+ Display Memory Interface
+
+ DML
+ Display Mode Library
+
+ DMCU
+ Display Micro-Controller Unit
+
+ DMCUB
+ Display Micro-Controller Unit, version B
+
+ DPCD
+ DisplayPort Configuration Data
+
+ DPM(S)
+ Display Power Management (Signaling)
+
+ DRR
+ Dynamic Refresh Rate
+
+ DWB
+ Display Writeback
+
+ FB
+ Frame Buffer
+
+ FBC
+ Frame Buffer Compression
+
+ FEC
+ Forward Error Correction
+
+ FRL
+ Fixed Rate Link
+
+ GCO
+ Graphical Controller Object
+
+ GSL
+ Global Swap Lock
+
+ iGPU
+ integrated GPU
+
+ ISR
+ Interrupt Service Request
+
+ ISV
+ Independent Software Vendor
+
+ KMD
+ Kernel Mode Driver
+
+ LB
+ Line Buffer
+
+ LFC
+ Low Framerate Compensation
+
+ LTTPR
+ Link Training Tunable Phy Repeater
+
+ LUT
+ Lookup Table
+
+ MALL
+ Memory Access at Last Level
+
+ MC
+ Memory Controller
+
+ MPC
+ Multiple pipes and plane combine
+
+ MPO
+ Multi Plane Overlay
+
+ MST
+ Multi Stream Transport
+
+ NBP State
+ Northbridge Power State
+
+ NBIO
+ North Bridge Input/Output
+
+ ODM
+ Output Data Mapping
+
+ OPM
+ Output Protection Manager
+
+ OPP
+ Output Plane Processor
+
+ OPTC
+ Output Pipe Timing Combiner
+
+ OTG
+ Output Timing Generator
+
+ PCON
+ Power Controller
+
+ PGFSM
+ Power Gate Finite State Machine
+
+ PSR
+ Panel Self Refresh
+
+ SCL
+ Scaler
+
+ SDP
+ Scalable Data Port
+
+ SLS
+ Single Large Surface
+
+ SST
+ Single Stream Transport
+
+ TMDS
+ Transition-Minimized Differential Signaling
+
+ TMZ
+ Trusted Memory Zone
+
+ TTU
+ Time to Underflow
+
+ VRR
+ Variable Refresh Rate
+
+ UVD
+ Unified Video Decoder
diff --git a/Documentation/gpu/amdgpu/display/dc_pipeline_overview.svg b/Documentation/gpu/amdgpu/display/dc_pipeline_overview.svg
new file mode 100644
index 000000000000..9adecebfe65b
--- /dev/null
+++ b/Documentation/gpu/amdgpu/display/dc_pipeline_overview.svg
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diff --git a/Documentation/gpu/amdgpu/display/dcn-overview.rst b/Documentation/gpu/amdgpu/display/dcn-overview.rst
new file mode 100644
index 000000000000..f98624d7828e
--- /dev/null
+++ b/Documentation/gpu/amdgpu/display/dcn-overview.rst
@@ -0,0 +1,171 @@
+=======================
+Display Core Next (DCN)
+=======================
+
+To equip our readers with the basic knowledge of how AMD Display Core Next
+(DCN) works, we need to start with an overview of the hardware pipeline. Below
+you can see a picture that provides a DCN overview, keep in mind that this is a
+generic diagram, and we have variations per ASIC.
+
+.. kernel-figure:: dc_pipeline_overview.svg
+
+Based on this diagram, we can pass through each block and briefly describe
+them:
+
+* **Display Controller Hub (DCHUB)**: This is the gateway between the Scalable
+ Data Port (SDP) and DCN. This component has multiple features, such as memory
+ arbitration, rotation, and cursor manipulation.
+
+* **Display Pipe and Plane (DPP)**: This block provides pre-blend pixel
+ processing such as color space conversion, linearization of pixel data, tone
+ mapping, and gamut mapping.
+
+* **Multiple Pipe/Plane Combined (MPC)**: This component performs blending of
+ multiple planes, using global or per-pixel alpha.
+
+* **Output Pixel Processing (OPP)**: Process and format pixels to be sent to
+ the display.
+
+* **Output Pipe Timing Combiner (OPTC)**: It generates time output to combine
+ streams or divide capabilities. CRC values are generated in this block.
+
+* **Display Output (DIO)**: Codify the output to the display connected to our
+ GPU.
+
+* **Display Writeback (DWB)**: It provides the ability to write the output of
+ the display pipe back to memory as video frames.
+
+* **Multi-Media HUB (MMHUBBUB)**: Memory controller interface for DMCUB and DWB
+ (Note that DWB is not hooked yet).
+
+* **DCN Management Unit (DMU)**: It provides registers with access control and
+ interrupts the controller to the SOC host interrupt unit. This block includes
+ the Display Micro-Controller Unit - version B (DMCUB), which is handled via
+ firmware.
+
+* **DCN Clock Generator Block (DCCG)**: It provides the clocks and resets
+ for all of the display controller clock domains.
+
+* **Azalia (AZ)**: Audio engine.
+
+The above diagram is an architecture generalization of DCN, which means that
+every ASIC has variations around this base model. Notice that the display
+pipeline is connected to the Scalable Data Port (SDP) via DCHUB; you can see
+the SDP as the element from our Data Fabric that feeds the display pipe.
+
+Always approach the DCN architecture as something flexible that can be
+configured and reconfigured in multiple ways; in other words, each block can be
+setup or ignored accordingly with userspace demands. For example, if we
+want to drive an 8k@60Hz with a DSC enabled, our DCN may require 4 DPP and 2
+OPP. It is DC's responsibility to drive the best configuration for each
+specific scenario. Orchestrate all of these components together requires a
+sophisticated communication interface which is highlighted in the diagram by
+the edges that connect each block; from the chart, each connection between
+these blocks represents:
+
+1. Pixel data interface (red): Represents the pixel data flow;
+2. Global sync signals (green): It is a set of synchronization signals composed
+ by VStartup, VUpdate, and VReady;
+3. Config interface: Responsible to configure blocks;
+4. Sideband signals: All other signals that do not fit the previous one.
+
+These signals are essential and play an important role in DCN. Nevertheless,
+the Global Sync deserves an extra level of detail described in the next
+section.
+
+All of these components are represented by a data structure named dc_state.
+From DCHUB to MPC, we have a representation called dc_plane; from MPC to OPTC,
+we have dc_stream, and the output (DIO) is handled by dc_link. Keep in mind
+that HUBP accesses a surface using a specific format read from memory, and our
+dc_plane should work to convert all pixels in the plane to something that can
+be sent to the display via dc_stream and dc_link.
+
+Front End and Back End
+----------------------
+
+Display pipeline can be broken down into two components that are usually
+referred as **Front End (FE)** and **Back End (BE)**, where FE consists of:
+
+* DCHUB (Mainly referring to a subcomponent named HUBP)
+* DPP
+* MPC
+
+On the other hand, BE consist of
+
+* OPP
+* OPTC
+* DIO (DP/HDMI stream encoder and link encoder)
+
+OPP and OPTC are two joining blocks between FE and BE. On a side note, this is
+a one-to-one mapping of the link encoder to PHY, but we can configure the DCN
+to choose which link encoder to connect to which PHY. FE's main responsibility
+is to change, blend and compose pixel data, while BE's job is to frame a
+generic pixel stream to a specific display's pixel stream.
+
+Data Flow
+---------
+
+Initially, data is passed in from VRAM through Data Fabric (DF) in native pixel
+formats. Such data format stays through till HUBP in DCHUB, where HUBP unpacks
+different pixel formats and outputs them to DPP in uniform streams through 4
+channels (1 for alpha + 3 for colors).
+
+The Converter and Cursor (CNVC) in DPP would then normalize the data
+representation and convert them to a DCN specific floating-point format (i.e.,
+different from the IEEE floating-point format). In the process, CNVC also
+applies a degamma function to transform the data from non-linear to linear
+space to relax the floating-point calculations following. Data would stay in
+this floating-point format from DPP to OPP.
+
+Starting OPP, because color transformation and blending have been completed
+(i.e alpha can be dropped), and the end sinks do not require the precision and
+dynamic range that floating points provide (i.e. all displays are in integer
+depth format), bit-depth reduction/dithering would kick in. In OPP, we would
+also apply a regamma function to introduce the gamma removed earlier back.
+Eventually, we output data in integer format at DIO.
+
+Global Sync
+-----------
+
+Many DCN registers are double buffered, most importantly the surface address.
+This allows us to update DCN hardware atomically for page flips, as well as
+for most other updates that don't require enabling or disabling of new pipes.
+
+(Note: There are many scenarios when DC will decide to reserve extra pipes
+in order to support outputs that need a very high pixel clock, or for
+power saving purposes.)
+
+These atomic register updates are driven by global sync signals in DCN. In
+order to understand how atomic updates interact with DCN hardware, and how DCN
+signals page flip and vblank events it is helpful to understand how global sync
+is programmed.
+
+Global sync consists of three signals, VSTARTUP, VUPDATE, and VREADY. These are
+calculated by the Display Mode Library - DML (drivers/gpu/drm/amd/display/dc/dml)
+based on a large number of parameters and ensure our hardware is able to feed
+the DCN pipeline without underflows or hangs in any given system configuration.
+The global sync signals always happen during VBlank, are independent from the
+VSync signal, and do not overlap each other.
+
+VUPDATE is the only signal that is of interest to the rest of the driver stack
+or userspace clients as it signals the point at which hardware latches to
+atomically programmed (i.e. double buffered) registers. Even though it is
+independent of the VSync signal we use VUPDATE to signal the VSync event as it
+provides the best indication of how atomic commits and hardware interact.
+
+Since DCN hardware is double-buffered the DC driver is able to program the
+hardware at any point during the frame.
+
+The below picture illustrates the global sync signals:
+
+.. kernel-figure:: global_sync_vblank.svg
+
+These signals affect core DCN behavior. Programming them incorrectly will lead
+to a number of negative consequences, most of them quite catastrophic.
+
+The following picture shows how global sync allows for a mailbox style of
+updates, i.e. it allows for multiple re-configurations between VUpdate
+events where only the last configuration programmed before the VUpdate signal
+becomes effective.
+
+.. kernel-figure:: config_example.svg
diff --git a/Documentation/gpu/amdgpu/display/display-manager.rst b/Documentation/gpu/amdgpu/display/display-manager.rst
new file mode 100644
index 000000000000..7ce31f89d9a0
--- /dev/null
+++ b/Documentation/gpu/amdgpu/display/display-manager.rst
@@ -0,0 +1,42 @@
+======================
+AMDgpu Display Manager
+======================
+
+.. contents:: Table of Contents
+ :depth: 3
+
+.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+ :doc: overview
+
+.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
+ :internal:
+
+Lifecycle
+=========
+
+.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+ :doc: DM Lifecycle
+
+.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+ :functions: dm_hw_init dm_hw_fini
+
+Interrupts
+==========
+
+.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c
+ :doc: overview
+
+.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c
+ :internal:
+
+.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+ :functions: register_hpd_handlers dm_crtc_high_irq dm_pflip_high_irq
+
+Atomic Implementation
+=====================
+
+.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+ :doc: atomic
+
+.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+ :functions: amdgpu_dm_atomic_check amdgpu_dm_atomic_commit_tail
diff --git a/Documentation/gpu/amdgpu/display/global_sync_vblank.svg b/Documentation/gpu/amdgpu/display/global_sync_vblank.svg
new file mode 100644
index 000000000000..48f5dc4fd5d3
--- /dev/null
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diff --git a/Documentation/gpu/amdgpu/display/index.rst b/Documentation/gpu/amdgpu/display/index.rst
new file mode 100644
index 000000000000..c1fb2fb3c710
--- /dev/null
+++ b/Documentation/gpu/amdgpu/display/index.rst
@@ -0,0 +1,31 @@
+.. _amdgpu-display-core:
+
+===================================
+drm/amd/display - Display Core (DC)
+===================================
+
+AMD display engine is partially shared with other operating systems; for this
+reason, our Display Core Driver is divided into two pieces:
+
+1. **Display Core (DC)** contains the OS-agnostic components. Things like
+ hardware programming and resource management are handled here.
+2. **Display Manager (DM)** contains the OS-dependent components. Hooks to the
+ amdgpu base driver and DRM are implemented here.
+
+The display pipe is responsible for "scanning out" a rendered frame from the
+GPU memory (also called VRAM, FrameBuffer, etc.) to a display. In other words,
+it would:
+
+1. Read frame information from memory;
+2. Perform required transformation;
+3. Send pixel data to sink devices.
+
+If you want to learn more about our driver details, take a look at the below
+table of content:
+
+.. toctree::
+
+ display-manager.rst
+ dc-debug.rst
+ dcn-overview.rst
+ dc-glossary.rst
diff --git a/Documentation/gpu/amdgpu/driver-core.rst b/Documentation/gpu/amdgpu/driver-core.rst
new file mode 100644
index 000000000000..ebf5932845a9
--- /dev/null
+++ b/Documentation/gpu/amdgpu/driver-core.rst
@@ -0,0 +1,182 @@
+============================
+ Core Driver Infrastructure
+============================
+
+GPU Hardware Structure
+======================
+
+Each ASIC is a collection of hardware blocks. We refer to them as
+"IPs" (Intellectual Property blocks). Each IP encapsulates certain
+functionality. IPs are versioned and can also be mixed and matched.
+E.g., you might have two different ASICs that both have System DMA (SDMA) 5.x IPs.
+The driver is arranged by IPs. There are driver components to handle
+the initialization and operation of each IP. There are also a bunch
+of smaller IPs that don't really need much if any driver interaction.
+Those end up getting lumped into the common stuff in the soc files.
+The soc files (e.g., vi.c, soc15.c nv.c) contain code for aspects of
+the SoC itself rather than specific IPs. E.g., things like GPU resets
+and register access functions are SoC dependent.
+
+An APU contains more than just CPU and GPU, it also contains all of
+the platform stuff (audio, usb, gpio, etc.). Also, a lot of
+components are shared between the CPU, platform, and the GPU (e.g.,
+SMU, PSP, etc.). Specific components (CPU, GPU, etc.) usually have
+their interface to interact with those common components. For things
+like S0i3 there is a ton of coordination required across all the
+components, but that is probably a bit beyond the scope of this
+section.
+
+With respect to the GPU, we have the following major IPs:
+
+GMC (Graphics Memory Controller)
+ This was a dedicated IP on older pre-vega chips, but has since
+ become somewhat decentralized on vega and newer chips. They now
+ have dedicated memory hubs for specific IPs or groups of IPs. We
+ still treat it as a single component in the driver however since
+ the programming model is still pretty similar. This is how the
+ different IPs on the GPU get the memory (VRAM or system memory).
+ It also provides the support for per process GPU virtual address
+ spaces.
+
+IH (Interrupt Handler)
+ This is the interrupt controller on the GPU. All of the IPs feed
+ their interrupts into this IP and it aggregates them into a set of
+ ring buffers that the driver can parse to handle interrupts from
+ different IPs.
+
+PSP (Platform Security Processor)
+ This handles security policy for the SoC and executes trusted
+ applications, and validates and loads firmwares for other blocks.
+
+SMU (System Management Unit)
+ This is the power management microcontroller. It manages the entire
+ SoC. The driver interacts with it to control power management
+ features like clocks, voltages, power rails, etc.
+
+DCN (Display Controller Next)
+ This is the display controller. It handles the display hardware.
+ It is described in more details in :ref:`Display Core <amdgpu-display-core>`.
+
+SDMA (System DMA)
+ This is a multi-purpose DMA engine. The kernel driver uses it for
+ various things including paging and GPU page table updates. It's also
+ exposed to userspace for use by user mode drivers (OpenGL, Vulkan,
+ etc.)
+
+GC (Graphics and Compute)
+ This is the graphics and compute engine, i.e., the block that
+ encompasses the 3D pipeline and and shader blocks. This is by far the
+ largest block on the GPU. The 3D pipeline has tons of sub-blocks. In
+ addition to that, it also contains the CP microcontrollers (ME, PFP,
+ CE, MEC) and the RLC microcontroller. It's exposed to userspace for
+ user mode drivers (OpenGL, Vulkan, OpenCL, etc.)
+
+VCN (Video Core Next)
+ This is the multi-media engine. It handles video and image encode and
+ decode. It's exposed to userspace for user mode drivers (VA-API,
+ OpenMAX, etc.)
+
+Graphics and Compute Microcontrollers
+-------------------------------------
+
+CP (Command Processor)
+ The name for the hardware block that encompasses the front end of the
+ GFX/Compute pipeline. Consists mainly of a bunch of microcontrollers
+ (PFP, ME, CE, MEC). The firmware that runs on these microcontrollers
+ provides the driver interface to interact with the GFX/Compute engine.
+
+ MEC (MicroEngine Compute)
+ This is the microcontroller that controls the compute queues on the
+ GFX/compute engine.
+
+ MES (MicroEngine Scheduler)
+ This is a new engine for managing queues. This is currently unused.
+
+RLC (RunList Controller)
+ This is another microcontroller in the GFX/Compute engine. It handles
+ power management related functionality within the GFX/Compute engine.
+ The name is a vestige of old hardware where it was originally added
+ and doesn't really have much relation to what the engine does now.
+
+Driver Structure
+================
+
+In general, the driver has a list of all of the IPs on a particular
+SoC and for things like init/fini/suspend/resume, more or less just
+walks the list and handles each IP.
+
+Some useful constructs:
+
+KIQ (Kernel Interface Queue)
+ This is a control queue used by the kernel driver to manage other gfx
+ and compute queues on the GFX/compute engine. You can use it to
+ map/unmap additional queues, etc.
+
+IB (Indirect Buffer)
+ A command buffer for a particular engine. Rather than writing
+ commands directly to the queue, you can write the commands into a
+ piece of memory and then put a pointer to the memory into the queue.
+ The hardware will then follow the pointer and execute the commands in
+ the memory, then returning to the rest of the commands in the ring.
+
+.. _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
diff --git a/Documentation/gpu/amdgpu/driver-misc.rst b/Documentation/gpu/amdgpu/driver-misc.rst
new file mode 100644
index 000000000000..e3d6b2fa2493
--- /dev/null
+++ b/Documentation/gpu/amdgpu/driver-misc.rst
@@ -0,0 +1,112 @@
+================================
+ Misc AMDGPU driver information
+================================
+
+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
+
+GPU SmartShift Information
+==========================
+
+GPU SmartShift information via sysfs
+
+smartshift_apu_power
+--------------------
+
+.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
+ :doc: smartshift_apu_power
+
+smartshift_dgpu_power
+---------------------
+
+.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
+ :doc: smartshift_dgpu_power
+
+smartshift_bias
+---------------
+
+.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
+ :doc: smartshift_bias
diff --git a/Documentation/gpu/amdgpu/index.rst b/Documentation/gpu/amdgpu/index.rst
new file mode 100644
index 000000000000..a24e1cfa7407
--- /dev/null
+++ b/Documentation/gpu/amdgpu/index.rst
@@ -0,0 +1,17 @@
+==========================
+ drm/amdgpu AMDgpu driver
+==========================
+
+The drm/amdgpu driver supports all AMD Radeon GPUs based on the Graphics Core
+Next (GCN) architecture.
+
+.. toctree::
+
+ module-parameters
+ driver-core
+ display/index
+ xgmi
+ ras
+ thermal
+ driver-misc
+ amdgpu-glossary
diff --git a/Documentation/gpu/amdgpu/module-parameters.rst b/Documentation/gpu/amdgpu/module-parameters.rst
new file mode 100644
index 000000000000..ea538c8dda35
--- /dev/null
+++ b/Documentation/gpu/amdgpu/module-parameters.rst
@@ -0,0 +1,7 @@
+===================
+ Module Parameters
+===================
+
+The amdgpu driver supports the following module parameters:
+
+.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
diff --git a/Documentation/gpu/amdgpu/ras.rst b/Documentation/gpu/amdgpu/ras.rst
new file mode 100644
index 000000000000..047f76e395cf
--- /dev/null
+++ b/Documentation/gpu/amdgpu/ras.rst
@@ -0,0 +1,62 @@
+====================
+ 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.
diff --git a/Documentation/gpu/amdgpu/thermal.rst b/Documentation/gpu/amdgpu/thermal.rst
new file mode 100644
index 000000000000..8aeb0186c9ef
--- /dev/null
+++ b/Documentation/gpu/amdgpu/thermal.rst
@@ -0,0 +1,65 @@
+===========================================
+ GPU Power/Thermal Controls and Monitoring
+===========================================
+
+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
diff --git a/Documentation/gpu/amdgpu/xgmi.rst b/Documentation/gpu/amdgpu/xgmi.rst
new file mode 100644
index 000000000000..23f2856f4524
--- /dev/null
+++ b/Documentation/gpu/amdgpu/xgmi.rst
@@ -0,0 +1,5 @@
+=====================
+ AMDGPU XGMI Support
+=====================
+
+.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
diff --git a/Documentation/gpu/drivers.rst b/Documentation/gpu/drivers.rst
index b4a0ed3ca961..3a52f48215a3 100644
--- a/Documentation/gpu/drivers.rst
+++ b/Documentation/gpu/drivers.rst
@@ -4,8 +4,7 @@ GPU Driver Documentation
.. toctree::
- amdgpu
- amdgpu-dc
+ amdgpu/index
i915
mcde
meson