325 lines
7.1 KiB
ReStructuredText
325 lines
7.1 KiB
ReStructuredText
=========================
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drm/amdgpu AMDgpu driver
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=========================
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The drm/amdgpu driver supports all AMD Radeon GPUs based on the Graphics Core
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Next (GCN) architecture.
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Module Parameters
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=================
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The amdgpu driver supports the following module parameters:
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
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Core Driver Infrastructure
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==========================
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This section covers core driver infrastructure.
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.. _amdgpu_memory_domains:
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Memory Domains
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--------------
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.. kernel-doc:: include/uapi/drm/amdgpu_drm.h
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:doc: memory domains
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Buffer Objects
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--------------
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
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:doc: amdgpu_object
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
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:internal:
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PRIME Buffer Sharing
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--------------------
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
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:doc: PRIME Buffer Sharing
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
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:internal:
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MMU Notifier
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------------
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c
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:doc: MMU Notifier
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c
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:internal:
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AMDGPU Virtual Memory
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---------------------
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
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:doc: GPUVM
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
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:internal:
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Interrupt Handling
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------------------
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
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:doc: Interrupt Handling
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
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:internal:
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IP Blocks
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------------------
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.. kernel-doc:: drivers/gpu/drm/amd/include/amd_shared.h
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:doc: IP Blocks
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.. kernel-doc:: drivers/gpu/drm/amd/include/amd_shared.h
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:identifiers: amd_ip_block_type amd_ip_funcs
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AMDGPU XGMI Support
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===================
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
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AMDGPU RAS Support
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==================
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The AMDGPU RAS interfaces are exposed via sysfs (for informational queries) and
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debugfs (for error injection).
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RAS debugfs/sysfs Control and Error Injection Interfaces
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--------------------------------------------------------
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
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:doc: AMDGPU RAS debugfs control interface
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RAS Reboot Behavior for Unrecoverable Errors
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--------------------------------------------------------
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
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:doc: AMDGPU RAS Reboot Behavior for Unrecoverable Errors
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RAS Error Count sysfs Interface
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-------------------------------
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
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:doc: AMDGPU RAS sysfs Error Count Interface
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RAS EEPROM debugfs Interface
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----------------------------
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
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:doc: AMDGPU RAS debugfs EEPROM table reset interface
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RAS VRAM Bad Pages sysfs Interface
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----------------------------------
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
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:doc: AMDGPU RAS sysfs gpu_vram_bad_pages Interface
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Sample Code
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-----------
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Sample code for testing error injection can be found here:
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https://cgit.freedesktop.org/mesa/drm/tree/tests/amdgpu/ras_tests.c
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This is part of the libdrm amdgpu unit tests which cover several areas of the GPU.
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There are four sets of tests:
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RAS Basic Test
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The test verifies the RAS feature enabled status and makes sure the necessary sysfs and debugfs files
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are present.
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RAS Query Test
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This test checks the RAS availability and enablement status for each supported IP block as well as
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the error counts.
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RAS Inject Test
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This test injects errors for each IP.
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RAS Disable Test
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This test tests disabling of RAS features for each IP block.
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GPU Power/Thermal Controls and Monitoring
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=========================================
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This section covers hwmon and power/thermal controls.
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HWMON Interfaces
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----------------
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.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
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:doc: hwmon
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GPU sysfs Power State Interfaces
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--------------------------------
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GPU power controls are exposed via sysfs files.
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power_dpm_state
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~~~~~~~~~~~~~~~
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.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
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:doc: power_dpm_state
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power_dpm_force_performance_level
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
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:doc: power_dpm_force_performance_level
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pp_table
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~~~~~~~~
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.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
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:doc: pp_table
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pp_od_clk_voltage
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~~~~~~~~~~~~~~~~~
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.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
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:doc: pp_od_clk_voltage
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pp_dpm_*
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~~~~~~~~
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.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
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:doc: pp_dpm_sclk pp_dpm_mclk pp_dpm_socclk pp_dpm_fclk pp_dpm_dcefclk pp_dpm_pcie
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pp_power_profile_mode
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~~~~~~~~~~~~~~~~~~~~~
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.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
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:doc: pp_power_profile_mode
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\*_busy_percent
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~~~~~~~~~~~~~~~
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.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
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:doc: gpu_busy_percent
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.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
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:doc: mem_busy_percent
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gpu_metrics
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~~~~~~~~~~~~~~~~~~~~~
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.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
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:doc: gpu_metrics
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GPU Product Information
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=======================
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Information about the GPU can be obtained on certain cards
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via sysfs
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product_name
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------------
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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:doc: product_name
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product_number
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--------------
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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:doc: product_name
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serial_number
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-------------
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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:doc: serial_number
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unique_id
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---------
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.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
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:doc: unique_id
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GPU Memory Usage Information
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============================
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Various memory accounting can be accessed via sysfs
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mem_info_vram_total
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-------------------
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
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:doc: mem_info_vram_total
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mem_info_vram_used
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------------------
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
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:doc: mem_info_vram_used
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mem_info_vis_vram_total
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-----------------------
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
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:doc: mem_info_vis_vram_total
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mem_info_vis_vram_used
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----------------------
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
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:doc: mem_info_vis_vram_used
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mem_info_gtt_total
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------------------
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
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:doc: mem_info_gtt_total
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mem_info_gtt_used
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-----------------
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
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:doc: mem_info_gtt_used
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PCIe Accounting Information
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===========================
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pcie_bw
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-------
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.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
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:doc: pcie_bw
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pcie_replay_count
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-----------------
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.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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:doc: pcie_replay_count
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+GPU SmartShift Information
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============================
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GPU SmartShift information via sysfs
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smartshift_apu_power
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--------------------
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.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
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:doc: smartshift_apu_power
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smartshift_dgpu_power
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---------------------
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.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
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:doc: smartshift_dgpu_power
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smartshift_bias
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---------------
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.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c
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:doc: smartshift_bias
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