==============
Document title
==============
First
=====
Second
------
Third
~~~~~
Leave the lower level headings as they are; I think those are less
important. Although RST doesn't mandate a specific order ("Rather than
imposing a fixed number and order of section title adornment styles, the
order enforced will be the order as encountered."), having the higher
levels the same overall makes it easier to follow the documents.
[I'm sort of kind of writing the recommendation for docs-next in the
mean time, but this order seems sensible, and is what I'm proposing.]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
Documentation/gpu/drm-internals.rst | 127 +++++++++++++-------------
Documentation/gpu/drm-userland-interfaces.rst | 5 +-
Documentation/gpu/i915.rst | 81 ++++++++--------
Documentation/gpu/introduction.rst | 3 +-
4 files changed, 110 insertions(+), 106 deletions(-)
@@ -1,3 +1,4 @@
+=============
DRM Internals
=============
@@ -18,7 +19,7 @@ management, command submission & fencing, suspend/resume support, and
DMA services.
Driver Initialization
----------------------
+=====================
At the core of every DRM driver is a :c:type:`struct drm_driver
<drm_driver>` structure. Drivers typically statically initialize
@@ -36,7 +37,7 @@ then describe individual operations in details as they get used in later
sections.
Driver Information
-~~~~~~~~~~~~~~~~~~
+------------------
Driver Features
^^^^^^^^^^^^^^^
@@ -131,7 +132,7 @@ kernel log at initialization time and passes it to userspace through the
DRM_IOCTL_VERSION ioctl.
Device Instance and Driver Handling
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-----------------------------------
.. kernel-doc:: drivers/gpu/drm/drm_drv.c
:doc: driver instance overview
@@ -140,7 +141,7 @@ Device Instance and Driver Handling
:export:
Driver Load
-~~~~~~~~~~~
+-----------
IRQ Registration
^^^^^^^^^^^^^^^^
@@ -221,7 +222,7 @@ other BARs, so leaving it mapped could cause undesired behaviour like
hangs or memory corruption.
Bus-specific Device Registration and PCI Support
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+------------------------------------------------
A number of functions are provided to help with device registration. The
functions deal with PCI and platform devices respectively and are only
@@ -236,7 +237,7 @@ drivers.
:export:
Memory management
------------------
+=================
Modern Linux systems require large amount of graphics memory to store
frame buffers, textures, vertices and other graphics-related data. Given
@@ -262,7 +263,7 @@ TTM, but has no video RAM management capabilities and is thus limited to
UMA devices.
The Translation Table Manager (TTM)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-----------------------------------
TTM design background and information belongs here.
@@ -313,7 +314,7 @@ object, ttm_global_item_ref() is used to create an initial reference
count for the TTM, which will call your initialization function.
The Graphics Execution Manager (GEM)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+------------------------------------
The GEM design approach has resulted in a memory manager that doesn't
provide full coverage of all (or even all common) use cases in its
@@ -576,7 +577,7 @@ available to the client. Such resource management should be abstracted
from the client in libdrm.
GEM Function Reference
-~~~~~~~~~~~~~~~~~~~~~~
+----------------------
.. kernel-doc:: drivers/gpu/drm/drm_gem.c
:export:
@@ -585,7 +586,7 @@ GEM Function Reference
:internal:
VMA Offset Manager
-~~~~~~~~~~~~~~~~~~
+------------------
.. kernel-doc:: drivers/gpu/drm/drm_vma_manager.c
:doc: vma offset manager
@@ -597,7 +598,7 @@ VMA Offset Manager
:internal:
PRIME Buffer Sharing
-~~~~~~~~~~~~~~~~~~~~
+--------------------
PRIME is the cross device buffer sharing framework in drm, originally
created for the OPTIMUS range of multi-gpu platforms. To userspace PRIME
@@ -648,13 +649,13 @@ PRIME Helper Functions
:doc: PRIME Helpers
PRIME Function References
-~~~~~~~~~~~~~~~~~~~~~~~~~
+-------------------------
.. kernel-doc:: drivers/gpu/drm/drm_prime.c
:export:
DRM MM Range Allocator
-~~~~~~~~~~~~~~~~~~~~~~
+----------------------
Overview
^^^^^^^^
@@ -669,7 +670,7 @@ LRU Scan/Eviction Support
:doc: lru scan roaster
DRM MM Range Allocator Function References
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+------------------------------------------
.. kernel-doc:: drivers/gpu/drm/drm_mm.c
:export:
@@ -678,7 +679,7 @@ DRM MM Range Allocator Function References
:internal:
CMA Helper Functions Reference
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+------------------------------
.. kernel-doc:: drivers/gpu/drm/drm_gem_cma_helper.c
:doc: cma helpers
@@ -690,7 +691,7 @@ CMA Helper Functions Reference
:internal:
Mode Setting
-------------
+============
Drivers must initialize the mode setting core by calling
:c:func:`drm_mode_config_init()` on the DRM device. The function
@@ -706,7 +707,7 @@ be setup by initializing the following fields.
Mode setting functions.
Display Modes Function Reference
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+--------------------------------
.. kernel-doc:: include/drm/drm_modes.h
:internal:
@@ -715,7 +716,7 @@ Display Modes Function Reference
:export:
Atomic Mode Setting Function Reference
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+--------------------------------------
.. kernel-doc:: drivers/gpu/drm/drm_atomic.c
:export:
@@ -724,7 +725,7 @@ Atomic Mode Setting Function Reference
:internal:
Frame Buffer Abstraction
-~~~~~~~~~~~~~~~~~~~~~~~~
+------------------------
Frame buffers are abstract memory objects that provide a source of
pixels to scanout to a CRTC. Applications explicitly request the
@@ -752,7 +753,7 @@ drivers can manually clean up a framebuffer at module unload time with
:c:func:`drm_framebuffer_unregister_private()`.
DRM Format Handling
-~~~~~~~~~~~~~~~~~~~
+-------------------
.. kernel-doc:: include/drm/drm_fourcc.h
:internal:
@@ -761,7 +762,7 @@ DRM Format Handling
:export:
Dumb Buffer Objects
-~~~~~~~~~~~~~~~~~~~
+-------------------
The KMS API doesn't standardize backing storage object creation and
leaves it to driver-specific ioctls. Furthermore actually creating a
@@ -805,7 +806,7 @@ attempted on some ARM embedded platforms. Such drivers really must have
a hardware-specific ioctl to allocate suitable buffer objects.
Output Polling
-~~~~~~~~~~~~~~
+--------------
void (\*output_poll_changed)(struct drm_device \*dev);
This operation notifies the driver that the status of one or more
@@ -814,14 +815,14 @@ connectors has changed. Drivers that use the fb helper can just call the
operation.
KMS Initialization and Cleanup
-------------------------------
+==============================
A KMS device is abstracted and exposed as a set of planes, CRTCs,
encoders and connectors. KMS drivers must thus create and initialize all
those objects at load time after initializing mode setting.
CRTCs (:c:type:`struct drm_crtc <drm_crtc>`)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+--------------------------------------------
A CRTC is an abstraction representing a part of the chip that contains a
pointer to a scanout buffer. Therefore, the number of CRTCs available
@@ -842,7 +843,7 @@ structure, and registered with a call to :c:func:`drm_crtc_init()`
with a pointer to CRTC functions.
Planes (:c:type:`struct drm_plane <drm_plane>`)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-----------------------------------------------
A plane represents an image source that can be blended with or overlayed
on top of a CRTC during the scanout process. Planes are associated with
@@ -887,7 +888,7 @@ primary planes may make use of the helper functions described in ? to
create and register a primary plane with standard capabilities.
Encoders (:c:type:`struct drm_encoder <drm_encoder>`)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-----------------------------------------------------
An encoder takes pixel data from a CRTC and converts it to a format
suitable for any attached connectors. On some devices, it may be
@@ -927,7 +928,7 @@ compatibility layer when implemented) are responsible for attaching the
encoders they want to use to a CRTC.
Connectors (:c:type:`struct drm_connector <drm_connector>`)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-----------------------------------------------------------
A connector is the final destination for pixel data on a device, and
usually connects directly to an external display device like a monitor
@@ -1087,7 +1088,7 @@ can't detect the connection status, or failed connection status probes,
should return connector_status_unknown.
Cleanup
-~~~~~~~
+-------
The DRM core manages its objects' lifetime. When an object is not needed
anymore the core calls its destroy function, which must clean up and
@@ -1106,7 +1107,7 @@ Connectors state change detection must be cleanup up with a call to
:c:func:`drm_kms_helper_poll_fini()`.
Output discovery and initialization example
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-------------------------------------------
::
@@ -1154,19 +1155,19 @@ the process is complete, the new connector is registered with sysfs to
make its properties available to applications.
KMS API Functions
-~~~~~~~~~~~~~~~~~
+-----------------
.. kernel-doc:: drivers/gpu/drm/drm_crtc.c
:export:
KMS Data Structures
-~~~~~~~~~~~~~~~~~~~
+-------------------
.. kernel-doc:: include/drm/drm_crtc.h
:internal:
KMS Locking
-~~~~~~~~~~~
+-----------
.. kernel-doc:: drivers/gpu/drm/drm_modeset_lock.c
:doc: kms locking
@@ -1178,7 +1179,7 @@ KMS Locking
:export:
Mode Setting Helper Functions
------------------------------
+=============================
The plane, CRTC, encoder and connector functions provided by the drivers
implement the DRM API. They're called by the DRM core and ioctl handlers
@@ -1214,7 +1215,7 @@ operations. To use it, a driver must provide bottom functions for all of
the three KMS entities.
Atomic Modeset Helper Functions Reference
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-----------------------------------------
Overview
^^^^^^^^
@@ -1241,7 +1242,7 @@ Atomic State Reset and Initialization
:export:
Modeset Helper Reference for Common Vtables
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-------------------------------------------
.. kernel-doc:: include/drm/drm_modeset_helper_vtables.h
:internal:
@@ -1250,7 +1251,7 @@ Modeset Helper Reference for Common Vtables
:doc: overview
Legacy CRTC/Modeset Helper Functions Reference
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+----------------------------------------------
.. kernel-doc:: drivers/gpu/drm/drm_crtc_helper.c
:export:
@@ -1259,7 +1260,7 @@ Legacy CRTC/Modeset Helper Functions Reference
:doc: overview
Output Probing Helper Functions Reference
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-----------------------------------------
.. kernel-doc:: drivers/gpu/drm/drm_probe_helper.c
:doc: output probing helper overview
@@ -1268,7 +1269,7 @@ Output Probing Helper Functions Reference
:export:
fbdev Helper Functions Reference
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+--------------------------------
.. kernel-doc:: drivers/gpu/drm/drm_fb_helper.c
:doc: fbdev helpers
@@ -1280,7 +1281,7 @@ fbdev Helper Functions Reference
:internal:
Framebuffer CMA Helper Functions Reference
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+------------------------------------------
.. kernel-doc:: drivers/gpu/drm/drm_fb_cma_helper.c
:doc: framebuffer cma helper functions
@@ -1289,7 +1290,7 @@ Framebuffer CMA Helper Functions Reference
:export:
Display Port Helper Functions Reference
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+---------------------------------------
.. kernel-doc:: drivers/gpu/drm/drm_dp_helper.c
:doc: dp helpers
@@ -1301,7 +1302,7 @@ Display Port Helper Functions Reference
:export:
Display Port Dual Mode Adaptor Helper Functions Reference
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+---------------------------------------------------------
.. kernel-doc:: drivers/gpu/drm/drm_dp_dual_mode_helper.c
:doc: dp dual mode helpers
@@ -1313,7 +1314,7 @@ Display Port Dual Mode Adaptor Helper Functions Reference
:export:
Display Port MST Helper Functions Reference
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-------------------------------------------
.. kernel-doc:: drivers/gpu/drm/drm_dp_mst_topology.c
:doc: dp mst helper
@@ -1325,7 +1326,7 @@ Display Port MST Helper Functions Reference
:export:
MIPI DSI Helper Functions Reference
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-----------------------------------
.. kernel-doc:: drivers/gpu/drm/drm_mipi_dsi.c
:doc: dsi helpers
@@ -1337,13 +1338,13 @@ MIPI DSI Helper Functions Reference
:export:
EDID Helper Functions Reference
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-------------------------------
.. kernel-doc:: drivers/gpu/drm/drm_edid.c
:export:
Rectangle Utilities Reference
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-----------------------------
.. kernel-doc:: include/drm/drm_rect.h
:doc: rect utils
@@ -1355,7 +1356,7 @@ Rectangle Utilities Reference
:export:
Flip-work Helper Reference
-~~~~~~~~~~~~~~~~~~~~~~~~~~
+--------------------------
.. kernel-doc:: include/drm/drm_flip_work.h
:doc: flip utils
@@ -1367,7 +1368,7 @@ Flip-work Helper Reference
:export:
HDMI Infoframes Helper Reference
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+--------------------------------
Strictly speaking this is not a DRM helper library but generally useable
by any driver interfacing with HDMI outputs like v4l or alsa drivers.
@@ -1381,7 +1382,7 @@ libraries and hence is also included here.
:export:
Plane Helper Reference
-~~~~~~~~~~~~~~~~~~~~~~
+----------------------
.. kernel-doc:: drivers/gpu/drm/drm_plane_helper.c
:export:
@@ -1390,13 +1391,13 @@ Plane Helper Reference
:doc: overview
Tile group
-~~~~~~~~~~
+----------
.. kernel-doc:: drivers/gpu/drm/drm_crtc.c
:doc: Tile group
Bridges
-~~~~~~~
+-------
Overview
^^^^^^^^
@@ -1414,7 +1415,7 @@ Default bridge callback sequence
:export:
Panel Helper Reference
-~~~~~~~~~~~~~~~~~~~~~~
+----------------------
.. kernel-doc:: include/drm/drm_panel.h
:internal:
@@ -1426,7 +1427,7 @@ Panel Helper Reference
:doc: drm panel
Simple KMS Helper Reference
-~~~~~~~~~~~~~~~~~~~~~~~~~~~
+---------------------------
.. kernel-doc:: include/drm/drm_simple_kms_helper.h
:internal:
@@ -1438,7 +1439,7 @@ Simple KMS Helper Reference
:doc: overview
KMS Properties
---------------
+==============
Drivers may need to expose additional parameters to applications than
those described in the previous sections. KMS supports attaching
@@ -1526,7 +1527,7 @@ pointer to the target object, a pointer to the previously created
property and an initial instance value.
Existing KMS Properties
-~~~~~~~~~~~~~~~~~~~~~~~
+-----------------------
The following table gives description of drm properties exposed by
various modules/drivers.
@@ -1790,7 +1791,7 @@ various modules/drivers.
+-------------------------------+----------------------+--------------------------------------------------------------------------------------------------------------------+-----------------------------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
Vertical Blanking
------------------
+=================
Vertical blanking plays a major role in graphics rendering. To achieve
tear-free display, users must synchronize page flips and/or rendering to
@@ -1848,7 +1849,7 @@ with a call to :c:func:`drm_vblank_cleanup()` in the driver unload
operation handler.
Vertical Blanking and Interrupt Handling Functions Reference
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+------------------------------------------------------------
.. kernel-doc:: drivers/gpu/drm/drm_irq.c
:export:
@@ -1857,10 +1858,10 @@ Vertical Blanking and Interrupt Handling Functions Reference
:functions: drm_crtc_vblank_waitqueue
Open/Close, File Operations and IOCTLs
---------------------------------------
+======================================
Open and Close
-~~~~~~~~~~~~~~
+--------------
int (\*firstopen) (struct drm_device \*); void (\*lastclose) (struct
drm_device \*); int (\*open) (struct drm_device \*, struct drm_file
@@ -1907,7 +1908,7 @@ state so that the vga console or an independent fbdev driver could take
over.
File Operations
-~~~~~~~~~~~~~~~
+---------------
.. kernel-doc:: drivers/gpu/drm/drm_fops.c
:doc: file operations
@@ -1916,7 +1917,7 @@ File Operations
:export:
IOCTLs
-~~~~~~
+------
struct drm_ioctl_desc \*ioctls; int num_ioctls;
Driver-specific ioctls descriptors table.
@@ -1965,7 +1966,7 @@ how the ioctl is allowed to be called.
:export:
Legacy Support Code
--------------------
+===================
The section very briefly covers some of the old legacy support code
which is only used by old DRM drivers which have done a so-called
@@ -1975,7 +1976,7 @@ command submission code. Do not use any of this in new and modern
drivers.
Legacy Suspend/Resume
-~~~~~~~~~~~~~~~~~~~~~
+---------------------
The DRM core provides some suspend/resume code, but drivers wanting full
suspend/resume support should provide save() and restore() functions.
@@ -1992,7 +1993,7 @@ through the :c:type:`struct device_driver <device_driver>`
dev_pm_ops) and set these methods to NULL.
Legacy DMA Services
-~~~~~~~~~~~~~~~~~~~
+-------------------
This should cover how DMA mapping etc. is supported by the core. These
functions are deprecated and should not be used.
@@ -1,3 +1,4 @@
+===================
Userland interfaces
===================
@@ -14,7 +15,7 @@ Cover generic ioctls and sysfs layout here. We only need high-level
info, since man pages should cover the rest.
Render nodes
-------------
+============
DRM core provides multiple character-devices for user-space to use.
Depending on which device is opened, user-space can perform a different
@@ -67,7 +68,7 @@ visible to user-space and accessible beyond open-file boundaries, they
cannot support render nodes.
VBlank event handling
----------------------
+=====================
The DRM core exposes two vertical blank related ioctls:
@@ -1,5 +1,6 @@
-drm/i915 Intel GFX Driver
-=========================
+===========================
+ 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
@@ -7,13 +8,13 @@ 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
@@ -25,7 +26,7 @@ Runtime Power Management
:internal:
Interrupt Handling
-~~~~~~~~~~~~~~~~~~
+------------------
.. kernel-doc:: drivers/gpu/drm/i915/i915_irq.c
:doc: interrupt handling
@@ -40,7 +41,7 @@ Interrupt Handling
: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
@@ -49,14 +50,14 @@ Intel GVT-g Guest Support(vGPU)
: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
@@ -64,7 +65,7 @@ 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
@@ -76,7 +77,7 @@ Frontbuffer Tracking
:functions: i915_gem_track_fb
Display FIFO Underrun Reporting
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-------------------------------
.. kernel-doc:: drivers/gpu/drm/i915/intel_fifo_underrun.c
:doc: fifo underrun handling
@@ -85,7 +86,7 @@ Display FIFO Underrun Reporting
:internal:
Plane Configuration
-~~~~~~~~~~~~~~~~~~~
+-------------------
This section covers plane configuration and composition with the primary
plane, sprites, cursors and overlays. This includes the infrastructure
@@ -94,7 +95,7 @@ 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
@@ -103,7 +104,7 @@ Atomic Plane Helpers
:internal:
Output Probing
-~~~~~~~~~~~~~~
+--------------
This section covers output probing and related infrastructure like the
hotplug interrupt storm detection and mitigation code. Note that the
@@ -111,7 +112,7 @@ 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
@@ -120,7 +121,7 @@ Hotplug
:internal:
High Definition Audio
-~~~~~~~~~~~~~~~~~~~~~
+---------------------
.. kernel-doc:: drivers/gpu/drm/i915/intel_audio.c
:doc: High Definition Audio over HDMI and Display Port
@@ -132,7 +133,7 @@ High Definition Audio
:internal:
Panel Self Refresh PSR (PSR/SRD)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+--------------------------------
.. kernel-doc:: drivers/gpu/drm/i915/intel_psr.c
:doc: Panel Self Refresh (PSR/SRD)
@@ -141,7 +142,7 @@ Panel Self Refresh PSR (PSR/SRD)
:internal:
Frame Buffer Compression (FBC)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+------------------------------
.. kernel-doc:: drivers/gpu/drm/i915/intel_fbc.c
:doc: Frame Buffer Compression (FBC)
@@ -150,7 +151,7 @@ Frame Buffer Compression (FBC)
:internal:
Display Refresh Rate Switching (DRRS)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-------------------------------------
.. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
:doc: Display Refresh Rate Switching (DRRS)
@@ -174,13 +175,13 @@ Display Refresh Rate Switching (DRRS)
:functions: intel_dp_drrs_init
DPIO
-~~~~
+----
.. kernel-doc:: drivers/gpu/drm/i915/i915_reg.h
:doc: DPIO
CSR firmware support for DMC
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+----------------------------
.. kernel-doc:: drivers/gpu/drm/i915/intel_csr.c
:doc: csr support for dmc
@@ -189,7 +190,7 @@ CSR firmware support for DMC
:internal:
Video BIOS Table (VBT)
-~~~~~~~~~~~~~~~~~~~~~~
+----------------------
.. kernel-doc:: drivers/gpu/drm/i915/intel_bios.c
:doc: Video BIOS Table (VBT)
@@ -201,13 +202,13 @@ Video BIOS Table (VBT)
: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
@@ -216,7 +217,7 @@ Batchbuffer Parsing
:internal:
Batchbuffer Pools
-~~~~~~~~~~~~~~~~~
+-----------------
.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_batch_pool.c
:doc: batch pool
@@ -225,7 +226,7 @@ Batchbuffer Pools
: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
@@ -234,7 +235,7 @@ Logical Rings, Logical Ring Contexts and Execlists
:internal:
Global GTT views
-~~~~~~~~~~~~~~~~
+----------------
.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_gtt.c
:doc: Global GTT views
@@ -243,25 +244,25 @@ Global GTT views
:internal:
GTT Fences and Swizzling
-~~~~~~~~~~~~~~~~~~~~~~~~
+------------------------
.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_fence.c
:internal:
Global GTT Fence Handling
-^^^^^^^^^^^^^^^^^^^^^^^^^
+~~~~~~~~~~~~~~~~~~~~~~~~~
.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_fence.c
:doc: fence register handling
Hardware Tiling and Swizzling Details
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_fence.c
:doc: tiling swizzling details
Object Tiling IOCTLs
-~~~~~~~~~~~~~~~~~~~~
+--------------------
.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_tiling.c
:internal:
@@ -270,7 +271,7 @@ Object Tiling IOCTLs
: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
@@ -282,7 +283,7 @@ unified memory architecture) available.
: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
@@ -293,10 +294,10 @@ objects, which has the goal to make space in gpu virtual address spaces.
:internal:
GuC
----
+===
GuC-specific firmware loader
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+----------------------------
.. kernel-doc:: drivers/gpu/drm/i915/intel_guc_loader.c
:doc: GuC-specific firmware loader
@@ -305,7 +306,7 @@ GuC-specific firmware loader
:internal:
GuC-based command submission
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+----------------------------
.. kernel-doc:: drivers/gpu/drm/i915/i915_guc_submission.c
:doc: GuC-based command submission
@@ -314,31 +315,31 @@ GuC-based command submission
: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
@@ -1,3 +1,4 @@
+============
Introduction
============
@@ -16,7 +17,7 @@ found in current kernels.
[Insert diagram of typical DRM stack here]
Style Guidelines
-----------------
+================
For consistency this documentation uses American English. Abbreviations
are written as all-uppercase, for example: DRM, KMS, IOCTL, CRTC, and so