mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-21 08:46:49 +07:00
1aa920ea0e
This is not to try to force a new style; this is my interpretation of what the most common existing style is. With hopes I don't need to answer so many questions about style going forward. Start a new style section in the i915 document to bolt the register style guide into. v2: vertical alignment, incorporate to kernel-doc, and more Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/9de4a5b1bea4e76461c70a1dd66751581de0124f.1502368010.git.jani.nikula@intel.com
497 lines
13 KiB
ReStructuredText
497 lines
13 KiB
ReStructuredText
===========================
|
|
drm/i915 Intel GFX Driver
|
|
===========================
|
|
|
|
The drm/i915 driver supports all (with the exception of some very early
|
|
models) integrated GFX chipsets with both Intel display and rendering
|
|
blocks. This excludes a set of SoC platforms with an SGX rendering unit,
|
|
those have basic support through the gma500 drm driver.
|
|
|
|
Core Driver Infrastructure
|
|
==========================
|
|
|
|
This section covers core driver infrastructure used by both the display
|
|
and the GEM parts of the driver.
|
|
|
|
Runtime Power Management
|
|
------------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_runtime_pm.c
|
|
:doc: runtime pm
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_runtime_pm.c
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_uncore.c
|
|
:internal:
|
|
|
|
Interrupt Handling
|
|
------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_irq.c
|
|
:doc: interrupt handling
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_irq.c
|
|
:functions: intel_irq_init intel_irq_init_hw intel_hpd_init
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_irq.c
|
|
:functions: intel_runtime_pm_disable_interrupts
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_irq.c
|
|
:functions: intel_runtime_pm_enable_interrupts
|
|
|
|
Intel GVT-g Guest Support(vGPU)
|
|
-------------------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_vgpu.c
|
|
:doc: Intel GVT-g guest support
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_vgpu.c
|
|
:internal:
|
|
|
|
Intel GVT-g Host Support(vGPU device model)
|
|
-------------------------------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_gvt.c
|
|
:doc: Intel GVT-g host support
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_gvt.c
|
|
:internal:
|
|
|
|
Display Hardware Handling
|
|
=========================
|
|
|
|
This section covers everything related to the display hardware including
|
|
the mode setting infrastructure, plane, sprite and cursor handling and
|
|
display, output probing and related topics.
|
|
|
|
Mode Setting Infrastructure
|
|
---------------------------
|
|
|
|
The i915 driver is thus far the only DRM driver which doesn't use the
|
|
common DRM helper code to implement mode setting sequences. Thus it has
|
|
its own tailor-made infrastructure for executing a display configuration
|
|
change.
|
|
|
|
Frontbuffer Tracking
|
|
--------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_frontbuffer.c
|
|
:doc: frontbuffer tracking
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_frontbuffer.h
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_frontbuffer.c
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_gem.c
|
|
:functions: i915_gem_track_fb
|
|
|
|
Display FIFO Underrun Reporting
|
|
-------------------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_fifo_underrun.c
|
|
:doc: fifo underrun handling
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_fifo_underrun.c
|
|
:internal:
|
|
|
|
Plane Configuration
|
|
-------------------
|
|
|
|
This section covers plane configuration and composition with the primary
|
|
plane, sprites, cursors and overlays. This includes the infrastructure
|
|
to do atomic vsync'ed updates of all this state and also tightly coupled
|
|
topics like watermark setup and computation, framebuffer compression and
|
|
panel self refresh.
|
|
|
|
Atomic Plane Helpers
|
|
--------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_atomic_plane.c
|
|
:doc: atomic plane helpers
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_atomic_plane.c
|
|
:internal:
|
|
|
|
Output Probing
|
|
--------------
|
|
|
|
This section covers output probing and related infrastructure like the
|
|
hotplug interrupt storm detection and mitigation code. Note that the
|
|
i915 driver still uses most of the common DRM helper code for output
|
|
probing, so those sections fully apply.
|
|
|
|
Hotplug
|
|
-------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_hotplug.c
|
|
:doc: Hotplug
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_hotplug.c
|
|
:internal:
|
|
|
|
High Definition Audio
|
|
---------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_audio.c
|
|
:doc: High Definition Audio over HDMI and Display Port
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_audio.c
|
|
:internal:
|
|
|
|
.. kernel-doc:: include/drm/i915_component.h
|
|
:internal:
|
|
|
|
Intel HDMI LPE Audio Support
|
|
----------------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_lpe_audio.c
|
|
:doc: LPE Audio integration for HDMI or DP playback
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_lpe_audio.c
|
|
:internal:
|
|
|
|
Panel Self Refresh PSR (PSR/SRD)
|
|
--------------------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_psr.c
|
|
:doc: Panel Self Refresh (PSR/SRD)
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_psr.c
|
|
:internal:
|
|
|
|
Frame Buffer Compression (FBC)
|
|
------------------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_fbc.c
|
|
:doc: Frame Buffer Compression (FBC)
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_fbc.c
|
|
:internal:
|
|
|
|
Display Refresh Rate Switching (DRRS)
|
|
-------------------------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
|
|
:doc: Display Refresh Rate Switching (DRRS)
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
|
|
:functions: intel_dp_set_drrs_state
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
|
|
:functions: intel_edp_drrs_enable
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
|
|
:functions: intel_edp_drrs_disable
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
|
|
:functions: intel_edp_drrs_invalidate
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
|
|
:functions: intel_edp_drrs_flush
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
|
|
:functions: intel_dp_drrs_init
|
|
|
|
DPIO
|
|
----
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_dpio_phy.c
|
|
:doc: DPIO
|
|
|
|
CSR firmware support for DMC
|
|
----------------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_csr.c
|
|
:doc: csr support for dmc
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_csr.c
|
|
:internal:
|
|
|
|
Video BIOS Table (VBT)
|
|
----------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_bios.c
|
|
:doc: Video BIOS Table (VBT)
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_bios.c
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_vbt_defs.h
|
|
:internal:
|
|
|
|
Display clocks
|
|
--------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_cdclk.c
|
|
:doc: CDCLK / RAWCLK
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_cdclk.c
|
|
:internal:
|
|
|
|
Display PLLs
|
|
------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_dpll_mgr.c
|
|
:doc: Display PLLs
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_dpll_mgr.c
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_dpll_mgr.h
|
|
:internal:
|
|
|
|
Memory Management and Command Submission
|
|
========================================
|
|
|
|
This sections covers all things related to the GEM implementation in the
|
|
i915 driver.
|
|
|
|
Batchbuffer Parsing
|
|
-------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_cmd_parser.c
|
|
:doc: batch buffer command parser
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_cmd_parser.c
|
|
:internal:
|
|
|
|
Batchbuffer Pools
|
|
-----------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_batch_pool.c
|
|
:doc: batch pool
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_batch_pool.c
|
|
:internal:
|
|
|
|
Logical Rings, Logical Ring Contexts and Execlists
|
|
--------------------------------------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_lrc.c
|
|
:doc: Logical Rings, Logical Ring Contexts and Execlists
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_lrc.c
|
|
:internal:
|
|
|
|
Global GTT views
|
|
----------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_gtt.c
|
|
:doc: Global GTT views
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_gtt.c
|
|
:internal:
|
|
|
|
GTT Fences and Swizzling
|
|
------------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_fence_reg.c
|
|
:internal:
|
|
|
|
Global GTT Fence Handling
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_fence_reg.c
|
|
:doc: fence register handling
|
|
|
|
Hardware Tiling and Swizzling Details
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_fence_reg.c
|
|
:doc: tiling swizzling details
|
|
|
|
Object Tiling IOCTLs
|
|
--------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_tiling.c
|
|
:internal:
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_tiling.c
|
|
:doc: buffer object tiling
|
|
|
|
Buffer Object Eviction
|
|
----------------------
|
|
|
|
This section documents the interface functions for evicting buffer
|
|
objects to make space available in the virtual gpu address spaces. Note
|
|
that this is mostly orthogonal to shrinking buffer objects caches, which
|
|
has the goal to make main memory (shared with the gpu through the
|
|
unified memory architecture) available.
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_evict.c
|
|
:internal:
|
|
|
|
Buffer Object Memory Shrinking
|
|
------------------------------
|
|
|
|
This section documents the interface function for shrinking memory usage
|
|
of buffer object caches. Shrinking is used to make main memory
|
|
available. Note that this is mostly orthogonal to evicting buffer
|
|
objects, which has the goal to make space in gpu virtual address spaces.
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_shrinker.c
|
|
:internal:
|
|
|
|
GuC
|
|
===
|
|
|
|
GuC-specific firmware loader
|
|
----------------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_guc_loader.c
|
|
:doc: GuC-specific firmware loader
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_guc_loader.c
|
|
:internal:
|
|
|
|
GuC-based command submission
|
|
----------------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_guc_submission.c
|
|
:doc: GuC-based command submission
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_guc_submission.c
|
|
:internal:
|
|
|
|
GuC Firmware Layout
|
|
-------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/intel_guc_fwif.h
|
|
:doc: GuC Firmware Layout
|
|
|
|
Tracing
|
|
=======
|
|
|
|
This sections covers all things related to the tracepoints implemented
|
|
in the i915 driver.
|
|
|
|
i915_ppgtt_create and i915_ppgtt_release
|
|
----------------------------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_trace.h
|
|
:doc: i915_ppgtt_create and i915_ppgtt_release tracepoints
|
|
|
|
i915_context_create and i915_context_free
|
|
-----------------------------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_trace.h
|
|
:doc: i915_context_create and i915_context_free tracepoints
|
|
|
|
switch_mm
|
|
---------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_trace.h
|
|
:doc: switch_mm tracepoint
|
|
|
|
Perf
|
|
====
|
|
|
|
Overview
|
|
--------
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:doc: i915 Perf Overview
|
|
|
|
Comparison with Core Perf
|
|
-------------------------
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:doc: i915 Perf History and Comparison with Core Perf
|
|
|
|
i915 Driver Entry Points
|
|
------------------------
|
|
|
|
This section covers the entrypoints exported outside of i915_perf.c to
|
|
integrate with drm/i915 and to handle the `DRM_I915_PERF_OPEN` ioctl.
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_perf_init
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_perf_fini
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_perf_register
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_perf_unregister
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_perf_open_ioctl
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_perf_release
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_perf_add_config_ioctl
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_perf_remove_config_ioctl
|
|
|
|
i915 Perf Stream
|
|
----------------
|
|
|
|
This section covers the stream-semantics-agnostic structures and functions
|
|
for representing an i915 perf stream FD and associated file operations.
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_drv.h
|
|
:functions: i915_perf_stream
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_drv.h
|
|
:functions: i915_perf_stream_ops
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: read_properties_unlocked
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_perf_open_ioctl_locked
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_perf_destroy_locked
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_perf_read
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_perf_ioctl
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_perf_enable_locked
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_perf_disable_locked
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_perf_poll
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_perf_poll_locked
|
|
|
|
i915 Perf Observation Architecture Stream
|
|
-----------------------------------------
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_drv.h
|
|
:functions: i915_oa_ops
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_oa_stream_init
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_oa_read
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_oa_stream_enable
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_oa_stream_disable
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_oa_wait_unlocked
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:functions: i915_oa_poll_wait
|
|
|
|
All i915 Perf Internals
|
|
-----------------------
|
|
|
|
This section simply includes all currently documented i915 perf internals, in
|
|
no particular order, but may include some more minor utilities or platform
|
|
specific details than found in the more high-level sections.
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
|
|
:internal:
|
|
|
|
Style
|
|
=====
|
|
|
|
The drm/i915 driver codebase has some style rules in addition to (and, in some
|
|
cases, deviating from) the kernel coding style.
|
|
|
|
Register macro definition style
|
|
-------------------------------
|
|
|
|
The style guide for ``i915_reg.h``.
|
|
|
|
.. kernel-doc:: drivers/gpu/drm/i915/i915_reg.h
|
|
:doc: The i915 register macro definition style guide
|