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.
This section covers core driver infrastructure used by both the display and the GEM parts of the driver.
.. 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:
.. 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
.. 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:
.. 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:
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.
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.
.. 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
.. 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:
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.
.. 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:
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.
.. kernel-doc:: drivers/gpu/drm/i915/intel_hotplug.c :doc: Hotplug
.. kernel-doc:: drivers/gpu/drm/i915/intel_hotplug.c :internal:
.. 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:
.. 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:
.. 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:
.. kernel-doc:: drivers/gpu/drm/i915/intel_fbc.c :doc: Frame Buffer Compression (FBC)
.. kernel-doc:: drivers/gpu/drm/i915/intel_fbc.c :internal:
.. 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
.. kernel-doc:: drivers/gpu/drm/i915/intel_dpio_phy.c :doc: DPIO
.. kernel-doc:: drivers/gpu/drm/i915/intel_csr.c :doc: csr support for dmc
.. kernel-doc:: drivers/gpu/drm/i915/intel_csr.c :internal:
.. 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:
.. kernel-doc:: drivers/gpu/drm/i915/intel_cdclk.c :doc: CDCLK / RAWCLK
.. kernel-doc:: drivers/gpu/drm/i915/intel_cdclk.c :internal:
.. 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:
This sections covers all things related to the GEM implementation in the i915 driver.
.. 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:
.. 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:
.. 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:
.. 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:
.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_fence_reg.c :internal:
.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_fence_reg.c :doc: fence register handling
.. kernel-doc:: drivers/gpu/drm/i915/i915_gem_fence_reg.c :doc: tiling swizzling details
.. 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
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:
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:
.. kernel-doc:: drivers/gpu/drm/i915/intel_guc_fw.c :internal:
.. kernel-doc:: drivers/gpu/drm/i915/intel_guc_submission.c :doc: GuC-based command submission
.. kernel-doc:: drivers/gpu/drm/i915/intel_guc_submission.c :internal:
.. kernel-doc:: drivers/gpu/drm/i915/intel_guc_fwif.h :doc: GuC Firmware Layout
This sections covers all things related to the tracepoints implemented in the i915 driver.
.. kernel-doc:: drivers/gpu/drm/i915/i915_trace.h :doc: i915_ppgtt_create and i915_ppgtt_release tracepoints
.. kernel-doc:: drivers/gpu/drm/i915/i915_trace.h :doc: i915_context_create and i915_context_free tracepoints
.. kernel-doc:: drivers/gpu/drm/i915/i915_trace.h :doc: switch_mm tracepoint
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c :doc: i915 Perf Overview
.. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c :doc: i915 Perf History and Comparison with Core Perf
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
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
.. 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
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:
The drm/i915 driver codebase has some style rules in addition to (and, in some cases, deviating from) the kernel coding 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