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f89823c212
The motivation behind this new interface is expose at runtime the
creation of new OA configs which can be used as part of the i915 perf
open interface. This will enable the kernel to learn new configs which
may be experimental, or otherwise not part of the core set currently
available through the i915 perf interface.
v2: Drop DRM_ERROR for userspace errors (Matthew)
Add padding to userspace structure (Matthew)
s/guid/uuid/ (Matthew)
v3: Use u32 instead of int to iterate through registers (Matthew)
v4: Lock access to dynamic config list (Lionel)
v5: by Matthew:
Fix uninitialized error values
Fix incorrect unwiding when opening perf stream
Use kmalloc_array() to store register
Use uuid_is_valid() to valid config uuids
Declare ioctls as write only
Check padding members are set to 0
by Lionel:
Return ENOENT rather than EINVAL when trying to remove non
existing config
v6: by Chris:
Use ref counts for OA configs
Store UUID in drm_i915_perf_oa_config rather then using pointer
Shuffle fields of drm_i915_perf_oa_config to avoid padding
v7: by Chris
Rename uapi pointers fields to end with '_ptr'
v8: by Andrzej, Marek, Sebastian
Update register whitelisting
by Lionel
Add more register names for documentation
Allow configuration programming in non-paranoid mode
Add support for value filter for a couple of registers already
programmed in other part of the kernel
v9: Documentation fix (Lionel)
Allow writing WAIT_FOR_RC6_EXIT only on Gen8+ (Andrzej)
v10: Perform read access_ok() on register pointers (Lionel)
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Signed-off-by: Andrzej Datczuk <andrzej.datczuk@intel.com>
Reviewed-by: Andrzej Datczuk <andrzej.datczuk@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170803165812.2373-2-lionel.g.landwerlin@intel.com
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===========================
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drm/i915 Intel GFX Driver
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===========================
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The drm/i915 driver supports all (with the exception of some very early
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models) integrated GFX chipsets with both Intel display and rendering
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blocks. This excludes a set of SoC platforms with an SGX rendering unit,
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those have basic support through the gma500 drm driver.
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Core Driver Infrastructure
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==========================
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This section covers core driver infrastructure used by both the display
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and the GEM parts of the driver.
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Runtime Power Management
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------------------------
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.. kernel-doc:: drivers/gpu/drm/i915/intel_runtime_pm.c
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:doc: runtime pm
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.. kernel-doc:: drivers/gpu/drm/i915/intel_runtime_pm.c
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:internal:
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.. kernel-doc:: drivers/gpu/drm/i915/intel_uncore.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/i915/i915_irq.c
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:doc: interrupt handling
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.. kernel-doc:: drivers/gpu/drm/i915/i915_irq.c
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:functions: intel_irq_init intel_irq_init_hw intel_hpd_init
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.. kernel-doc:: drivers/gpu/drm/i915/i915_irq.c
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:functions: intel_runtime_pm_disable_interrupts
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.. kernel-doc:: drivers/gpu/drm/i915/i915_irq.c
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:functions: intel_runtime_pm_enable_interrupts
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Intel GVT-g Guest Support(vGPU)
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-------------------------------
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.. kernel-doc:: drivers/gpu/drm/i915/i915_vgpu.c
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:doc: Intel GVT-g guest support
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.. kernel-doc:: drivers/gpu/drm/i915/i915_vgpu.c
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:internal:
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Intel GVT-g Host Support(vGPU device model)
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-------------------------------------------
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.. kernel-doc:: drivers/gpu/drm/i915/intel_gvt.c
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:doc: Intel GVT-g host support
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.. kernel-doc:: drivers/gpu/drm/i915/intel_gvt.c
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:internal:
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Display Hardware Handling
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=========================
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This section covers everything related to the display hardware including
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the mode setting infrastructure, plane, sprite and cursor handling and
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display, output probing and related topics.
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Mode Setting Infrastructure
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---------------------------
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The i915 driver is thus far the only DRM driver which doesn't use the
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common DRM helper code to implement mode setting sequences. Thus it has
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its own tailor-made infrastructure for executing a display configuration
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change.
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Frontbuffer Tracking
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--------------------
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.. kernel-doc:: drivers/gpu/drm/i915/intel_frontbuffer.c
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:doc: frontbuffer tracking
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.. kernel-doc:: drivers/gpu/drm/i915/intel_frontbuffer.h
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:internal:
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.. kernel-doc:: drivers/gpu/drm/i915/intel_frontbuffer.c
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:internal:
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.. kernel-doc:: drivers/gpu/drm/i915/i915_gem.c
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:functions: i915_gem_track_fb
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Display FIFO Underrun Reporting
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-------------------------------
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.. kernel-doc:: drivers/gpu/drm/i915/intel_fifo_underrun.c
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:doc: fifo underrun handling
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.. kernel-doc:: drivers/gpu/drm/i915/intel_fifo_underrun.c
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:internal:
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Plane Configuration
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-------------------
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This section covers plane configuration and composition with the primary
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plane, sprites, cursors and overlays. This includes the infrastructure
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to do atomic vsync'ed updates of all this state and also tightly coupled
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topics like watermark setup and computation, framebuffer compression and
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panel self refresh.
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Atomic Plane Helpers
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--------------------
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.. kernel-doc:: drivers/gpu/drm/i915/intel_atomic_plane.c
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:doc: atomic plane helpers
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.. kernel-doc:: drivers/gpu/drm/i915/intel_atomic_plane.c
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:internal:
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Output Probing
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--------------
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This section covers output probing and related infrastructure like the
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hotplug interrupt storm detection and mitigation code. Note that the
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i915 driver still uses most of the common DRM helper code for output
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probing, so those sections fully apply.
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Hotplug
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-------
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.. kernel-doc:: drivers/gpu/drm/i915/intel_hotplug.c
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:doc: Hotplug
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.. kernel-doc:: drivers/gpu/drm/i915/intel_hotplug.c
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:internal:
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High Definition Audio
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---------------------
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.. kernel-doc:: drivers/gpu/drm/i915/intel_audio.c
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:doc: High Definition Audio over HDMI and Display Port
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.. kernel-doc:: drivers/gpu/drm/i915/intel_audio.c
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:internal:
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.. kernel-doc:: include/drm/i915_component.h
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:internal:
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Intel HDMI LPE Audio Support
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----------------------------
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.. kernel-doc:: drivers/gpu/drm/i915/intel_lpe_audio.c
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:doc: LPE Audio integration for HDMI or DP playback
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.. kernel-doc:: drivers/gpu/drm/i915/intel_lpe_audio.c
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:internal:
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Panel Self Refresh PSR (PSR/SRD)
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--------------------------------
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.. kernel-doc:: drivers/gpu/drm/i915/intel_psr.c
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:doc: Panel Self Refresh (PSR/SRD)
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.. kernel-doc:: drivers/gpu/drm/i915/intel_psr.c
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:internal:
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Frame Buffer Compression (FBC)
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------------------------------
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.. kernel-doc:: drivers/gpu/drm/i915/intel_fbc.c
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:doc: Frame Buffer Compression (FBC)
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.. kernel-doc:: drivers/gpu/drm/i915/intel_fbc.c
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:internal:
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Display Refresh Rate Switching (DRRS)
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-------------------------------------
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.. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
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:doc: Display Refresh Rate Switching (DRRS)
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.. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
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:functions: intel_dp_set_drrs_state
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.. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
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:functions: intel_edp_drrs_enable
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.. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
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:functions: intel_edp_drrs_disable
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.. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
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:functions: intel_edp_drrs_invalidate
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.. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
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:functions: intel_edp_drrs_flush
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.. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
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:functions: intel_dp_drrs_init
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DPIO
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----
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.. kernel-doc:: drivers/gpu/drm/i915/intel_dpio_phy.c
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:doc: DPIO
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CSR firmware support for DMC
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----------------------------
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.. kernel-doc:: drivers/gpu/drm/i915/intel_csr.c
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:doc: csr support for dmc
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.. kernel-doc:: drivers/gpu/drm/i915/intel_csr.c
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:internal:
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Video BIOS Table (VBT)
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----------------------
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.. kernel-doc:: drivers/gpu/drm/i915/intel_bios.c
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:doc: Video BIOS Table (VBT)
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.. kernel-doc:: drivers/gpu/drm/i915/intel_bios.c
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:internal:
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.. kernel-doc:: drivers/gpu/drm/i915/intel_vbt_defs.h
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:internal:
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Display clocks
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--------------
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.. kernel-doc:: drivers/gpu/drm/i915/intel_cdclk.c
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:doc: CDCLK / RAWCLK
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.. kernel-doc:: drivers/gpu/drm/i915/intel_cdclk.c
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:internal:
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Display PLLs
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------------
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.. kernel-doc:: drivers/gpu/drm/i915/intel_dpll_mgr.c
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:doc: Display PLLs
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.. kernel-doc:: drivers/gpu/drm/i915/intel_dpll_mgr.c
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:internal:
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.. kernel-doc:: drivers/gpu/drm/i915/intel_dpll_mgr.h
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:internal:
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Memory Management and Command Submission
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========================================
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This sections covers all things related to the GEM implementation in the
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i915 driver.
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Batchbuffer Parsing
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-------------------
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.. kernel-doc:: drivers/gpu/drm/i915/i915_cmd_parser.c
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:doc: batch buffer command parser
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.. kernel-doc:: drivers/gpu/drm/i915/i915_cmd_parser.c
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:internal:
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Batchbuffer Pools
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-----------------
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.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_batch_pool.c
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:doc: batch pool
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.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_batch_pool.c
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:internal:
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Logical Rings, Logical Ring Contexts and Execlists
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--------------------------------------------------
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.. kernel-doc:: drivers/gpu/drm/i915/intel_lrc.c
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:doc: Logical Rings, Logical Ring Contexts and Execlists
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.. kernel-doc:: drivers/gpu/drm/i915/intel_lrc.c
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:internal:
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Global GTT views
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----------------
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.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_gtt.c
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:doc: Global GTT views
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.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_gtt.c
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:internal:
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GTT Fences and Swizzling
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------------------------
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.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_fence_reg.c
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:internal:
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Global GTT Fence Handling
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~~~~~~~~~~~~~~~~~~~~~~~~~
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.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_fence_reg.c
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:doc: fence register handling
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Hardware Tiling and Swizzling Details
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_fence_reg.c
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:doc: tiling swizzling details
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Object Tiling IOCTLs
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--------------------
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.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_tiling.c
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:internal:
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.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_tiling.c
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:doc: buffer object tiling
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Buffer Object Eviction
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----------------------
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This section documents the interface functions for evicting buffer
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objects to make space available in the virtual gpu address spaces. Note
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that this is mostly orthogonal to shrinking buffer objects caches, which
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has the goal to make main memory (shared with the gpu through the
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unified memory architecture) available.
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.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_evict.c
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:internal:
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Buffer Object Memory Shrinking
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------------------------------
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This section documents the interface function for shrinking memory usage
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of buffer object caches. Shrinking is used to make main memory
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available. Note that this is mostly orthogonal to evicting buffer
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objects, which has the goal to make space in gpu virtual address spaces.
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.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_shrinker.c
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:internal:
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GuC
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===
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GuC-specific firmware loader
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----------------------------
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.. kernel-doc:: drivers/gpu/drm/i915/intel_guc_loader.c
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:doc: GuC-specific firmware loader
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.. kernel-doc:: drivers/gpu/drm/i915/intel_guc_loader.c
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:internal:
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GuC-based command submission
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----------------------------
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.. kernel-doc:: drivers/gpu/drm/i915/i915_guc_submission.c
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:doc: GuC-based command submission
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.. kernel-doc:: drivers/gpu/drm/i915/i915_guc_submission.c
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:internal:
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GuC Firmware Layout
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-------------------
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.. kernel-doc:: drivers/gpu/drm/i915/intel_guc_fwif.h
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:doc: GuC Firmware Layout
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Tracing
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=======
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This sections covers all things related to the tracepoints implemented
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in the i915 driver.
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i915_ppgtt_create and i915_ppgtt_release
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----------------------------------------
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.. kernel-doc:: drivers/gpu/drm/i915/i915_trace.h
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:doc: i915_ppgtt_create and i915_ppgtt_release tracepoints
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i915_context_create and i915_context_free
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-----------------------------------------
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.. kernel-doc:: drivers/gpu/drm/i915/i915_trace.h
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:doc: i915_context_create and i915_context_free tracepoints
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switch_mm
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---------
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.. kernel-doc:: drivers/gpu/drm/i915/i915_trace.h
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:doc: switch_mm tracepoint
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Perf
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====
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Overview
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--------
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:doc: i915 Perf Overview
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Comparison with Core Perf
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-------------------------
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:doc: i915 Perf History and Comparison with Core Perf
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i915 Driver Entry Points
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------------------------
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This section covers the entrypoints exported outside of i915_perf.c to
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integrate with drm/i915 and to handle the `DRM_I915_PERF_OPEN` ioctl.
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_perf_init
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_perf_fini
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_perf_register
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_perf_unregister
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_perf_open_ioctl
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_perf_release
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_perf_add_config_ioctl
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_perf_remove_config_ioctl
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i915 Perf Stream
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----------------
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This section covers the stream-semantics-agnostic structures and functions
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for representing an i915 perf stream FD and associated file operations.
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.. kernel-doc:: drivers/gpu/drm/i915/i915_drv.h
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:functions: i915_perf_stream
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.. kernel-doc:: drivers/gpu/drm/i915/i915_drv.h
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:functions: i915_perf_stream_ops
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: read_properties_unlocked
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_perf_open_ioctl_locked
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_perf_destroy_locked
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_perf_read
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_perf_ioctl
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_perf_enable_locked
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_perf_disable_locked
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_perf_poll
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_perf_poll_locked
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i915 Perf Observation Architecture Stream
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-----------------------------------------
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.. kernel-doc:: drivers/gpu/drm/i915/i915_drv.h
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:functions: i915_oa_ops
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_oa_stream_init
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_oa_read
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_oa_stream_enable
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_oa_stream_disable
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_oa_wait_unlocked
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:functions: i915_oa_poll_wait
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All i915 Perf Internals
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-----------------------
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This section simply includes all currently documented i915 perf internals, in
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no particular order, but may include some more minor utilities or platform
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specific details than found in the more high-level sections.
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.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
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:internal:
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.. WARNING: DOCPROC directive not supported: !Cdrivers/gpu/drm/i915/i915_irq.c
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