linux/Documentation/gpu/i915.rst
Linus Torvalds ef96152e6a Less anger inducing pull request for 4.11
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Merge tag 'drm-for-v4.11-less-shouty' of git://people.freedesktop.org/~airlied/linux

Pull drm updates from Dave Airlie:
 "This is the main drm pull request for v4.11.

  Nothing too major, the tinydrm and mmu-less support should make
  writing smaller drivers easier for some of the simpler platforms, and
  there are a bunch of documentation updates.

  Intel grew displayport MST audio support which is hopefully useful to
  people, and FBC is on by default for GEN9+ (so people know where to
  look for regressions). AMDGPU has a lot of fixes that would like new
  firmware files installed for some GPUs.

  Other than that it's pretty scattered all over.

  I may have a follow up pull request as I know BenH has a bunch of AST
  rework and fixes and I'd like to get those in once they've been tested
  by AST, and I've got at least one pull request I'm just trying to get
  the author to fix up.

  Core:
   - drm_mm reworked
   - Connector list locking and iterators
   - Documentation updates
   - Format handling rework
   - MMU-less support for fbdev helpers
   - drm_crtc_from_index helper
   - Core CRC API
   - Remove drm_framebuffer_unregister_private
   - Debugfs cleanup
   - EDID/Infoframe fixes
   - Release callback
   - Tinydrm support (smaller drivers for simple hw)

  panel:
   - Add support for some new simple panels

  i915:
   - FBC by default for gen9+
   - Shared dpll cleanups and docs
   - GEN8 powerdomain cleanup
   - DMC support on GLK
   - DP MST audio support
   - HuC loading support
   - GVT init ordering fixes
   - GVT IOMMU workaround fix

  amdgpu/radeon:
   - Power/clockgating improvements
   - Preliminary SR-IOV support
   - TTM buffer priority and eviction fixes
   - SI DPM quirks removed due to firmware fixes
   - Powerplay improvements
   - VCE/UVD powergating fixes
   - Cleanup SI GFX code to match CI/VI
   - Support for > 2 displays on 3/5 crtc asics
   - SI headless fixes

  nouveau:
   - Rework securre boot code in prep for GP10x secure boot
   - Channel recovery improvements
   - Initial power budget code
   - MMU rework preperation

  vmwgfx:
   - Bunch of fixes and cleanups

  exynos:
   - Runtime PM support for MIC driver
   - Cleanups to use atomic helpers
   - UHD Support for TM2/TM2E boards
   - Trigger mode fix for Rinato board

  etnaviv:
   - Shader performance fix
   - Command stream validator fixes
   - Command buffer suballocator

  rockchip:
   - CDN DisplayPort support
   - IOMMU support for arm64 platform

  imx-drm:
   - Fix i.MX5 TV encoder probing
   - Remove lower fb size limits

  msm:
   - Support for HW cursor on MDP5 devices
   - DSI encoder cleanup
   - GPU DT bindings cleanup

  sti:
   - stih410 cleanups
   - Create fbdev at binding
   - HQVDP fixes
   - Remove stih416 chip functionality
   - DVI/HDMI mode selection fixes
   - FPS statistic reporting

  omapdrm:
   - IRQ code cleanup

  dwi-hdmi bridge:
   - Cleanups and fixes

  adv-bridge:
   - Updates for nexus

  sii8520 bridge:
   - Add interlace mode support
   - Rework HDMI and lots of fixes

  qxl:
   - probing/teardown cleanups

  ZTE drm:
   - HDMI audio via SPDIF interface
   - Video Layer overlay plane support
   - Add TV encoder output device

  atmel-hlcdc:
   - Rework fbdev creation logic

  tegra:
   - OF node fix

  fsl-dcu:
   - Minor fixes

  mali-dp:
   - Assorted fixes

  sunxi:
   - Minor fix"

[ This was the "fixed" pull, that still had build warnings due to people
  not even having build tested the result. I'm not a happy camper

  I've fixed the things I noticed up in this merge.      - Linus ]

* tag 'drm-for-v4.11-less-shouty' of git://people.freedesktop.org/~airlied/linux: (1177 commits)
  lib/Kconfig: make PRIME_NUMBERS not user selectable
  drm/tinydrm: helpers: Properly fix backlight dependency
  drm/tinydrm: mipi-dbi: Fix field width specifier warning
  drm/tinydrm: mipi-dbi: Silence: ‘cmd’ may be used uninitialized
  drm/sti: fix build warnings in sti_drv.c and sti_vtg.c files
  drm/amd/powerplay: fix PSI feature on Polars12
  drm/amdgpu: refuse to reserve io mem for split VRAM buffers
  drm/ttm: fix use-after-free races in vm fault handling
  drm/tinydrm: Add support for Multi-Inno MI0283QT display
  dt-bindings: Add Multi-Inno MI0283QT binding
  dt-bindings: display/panel: Add common rotation property
  of: Add vendor prefix for Multi-Inno
  drm/tinydrm: Add MIPI DBI support
  drm/tinydrm: Add helper functions
  drm: Add DRM support for tiny LCD displays
  drm/amd/amdgpu: post card if there is real hw resetting performed
  drm/nouveau/tmr: provide backtrace when a timeout is hit
  drm/nouveau/pci/g92: Fix rearm
  drm/nouveau/drm/therm/fan: add a fallback if no fan control is specified in the vbios
  drm/nouveau/hwmon: expose power_max and power_crit
  ..
2017-02-23 18:58:18 -08:00

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===========================
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 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
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:
.. WARNING: DOCPROC directive not supported: !Cdrivers/gpu/drm/i915/i915_irq.c