1 ===========================
2 drm/i915 Intel GFX Driver
3 ===========================
5 The drm/i915 driver supports all (with the exception of some very early
6 models) integrated GFX chipsets with both Intel display and rendering
7 blocks. This excludes a set of SoC platforms with an SGX rendering unit,
8 those have basic support through the gma500 drm driver.
10 Core Driver Infrastructure
11 ==========================
13 This section covers core driver infrastructure used by both the display
14 and the GEM parts of the driver.
16 Runtime Power Management
17 ------------------------
19 .. kernel-doc:: drivers/gpu/drm/i915/intel_runtime_pm.c
22 .. kernel-doc:: drivers/gpu/drm/i915/intel_runtime_pm.c
25 .. kernel-doc:: drivers/gpu/drm/i915/intel_uncore.c
31 .. kernel-doc:: drivers/gpu/drm/i915/i915_irq.c
32 :doc: interrupt handling
34 .. kernel-doc:: drivers/gpu/drm/i915/i915_irq.c
35 :functions: intel_irq_init intel_irq_init_hw intel_hpd_init
37 .. kernel-doc:: drivers/gpu/drm/i915/i915_irq.c
38 :functions: intel_runtime_pm_disable_interrupts
40 .. kernel-doc:: drivers/gpu/drm/i915/i915_irq.c
41 :functions: intel_runtime_pm_enable_interrupts
43 Intel GVT-g Guest Support(vGPU)
44 -------------------------------
46 .. kernel-doc:: drivers/gpu/drm/i915/i915_vgpu.c
47 :doc: Intel GVT-g guest support
49 .. kernel-doc:: drivers/gpu/drm/i915/i915_vgpu.c
52 Intel GVT-g Host Support(vGPU device model)
53 -------------------------------------------
55 .. kernel-doc:: drivers/gpu/drm/i915/intel_gvt.c
56 :doc: Intel GVT-g host support
58 .. kernel-doc:: drivers/gpu/drm/i915/intel_gvt.c
61 Display Hardware Handling
62 =========================
64 This section covers everything related to the display hardware including
65 the mode setting infrastructure, plane, sprite and cursor handling and
66 display, output probing and related topics.
68 Mode Setting Infrastructure
69 ---------------------------
71 The i915 driver is thus far the only DRM driver which doesn't use the
72 common DRM helper code to implement mode setting sequences. Thus it has
73 its own tailor-made infrastructure for executing a display configuration
79 .. kernel-doc:: drivers/gpu/drm/i915/intel_frontbuffer.c
80 :doc: frontbuffer tracking
82 .. kernel-doc:: drivers/gpu/drm/i915/intel_frontbuffer.h
85 .. kernel-doc:: drivers/gpu/drm/i915/intel_frontbuffer.c
88 .. kernel-doc:: drivers/gpu/drm/i915/i915_gem.c
89 :functions: i915_gem_track_fb
91 Display FIFO Underrun Reporting
92 -------------------------------
94 .. kernel-doc:: drivers/gpu/drm/i915/intel_fifo_underrun.c
95 :doc: fifo underrun handling
97 .. kernel-doc:: drivers/gpu/drm/i915/intel_fifo_underrun.c
103 This section covers plane configuration and composition with the primary
104 plane, sprites, cursors and overlays. This includes the infrastructure
105 to do atomic vsync'ed updates of all this state and also tightly coupled
106 topics like watermark setup and computation, framebuffer compression and
112 .. kernel-doc:: drivers/gpu/drm/i915/intel_atomic_plane.c
113 :doc: atomic plane helpers
115 .. kernel-doc:: drivers/gpu/drm/i915/intel_atomic_plane.c
121 This section covers output probing and related infrastructure like the
122 hotplug interrupt storm detection and mitigation code. Note that the
123 i915 driver still uses most of the common DRM helper code for output
124 probing, so those sections fully apply.
129 .. kernel-doc:: drivers/gpu/drm/i915/intel_hotplug.c
132 .. kernel-doc:: drivers/gpu/drm/i915/intel_hotplug.c
135 High Definition Audio
136 ---------------------
138 .. kernel-doc:: drivers/gpu/drm/i915/intel_audio.c
139 :doc: High Definition Audio over HDMI and Display Port
141 .. kernel-doc:: drivers/gpu/drm/i915/intel_audio.c
144 .. kernel-doc:: include/drm/i915_component.h
147 Panel Self Refresh PSR (PSR/SRD)
148 --------------------------------
150 .. kernel-doc:: drivers/gpu/drm/i915/intel_psr.c
151 :doc: Panel Self Refresh (PSR/SRD)
153 .. kernel-doc:: drivers/gpu/drm/i915/intel_psr.c
156 Frame Buffer Compression (FBC)
157 ------------------------------
159 .. kernel-doc:: drivers/gpu/drm/i915/intel_fbc.c
160 :doc: Frame Buffer Compression (FBC)
162 .. kernel-doc:: drivers/gpu/drm/i915/intel_fbc.c
165 Display Refresh Rate Switching (DRRS)
166 -------------------------------------
168 .. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
169 :doc: Display Refresh Rate Switching (DRRS)
171 .. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
172 :functions: intel_dp_set_drrs_state
174 .. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
175 :functions: intel_edp_drrs_enable
177 .. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
178 :functions: intel_edp_drrs_disable
180 .. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
181 :functions: intel_edp_drrs_invalidate
183 .. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
184 :functions: intel_edp_drrs_flush
186 .. kernel-doc:: drivers/gpu/drm/i915/intel_dp.c
187 :functions: intel_dp_drrs_init
192 .. kernel-doc:: drivers/gpu/drm/i915/intel_dpio_phy.c
195 CSR firmware support for DMC
196 ----------------------------
198 .. kernel-doc:: drivers/gpu/drm/i915/intel_csr.c
199 :doc: csr support for dmc
201 .. kernel-doc:: drivers/gpu/drm/i915/intel_csr.c
204 Video BIOS Table (VBT)
205 ----------------------
207 .. kernel-doc:: drivers/gpu/drm/i915/intel_bios.c
208 :doc: Video BIOS Table (VBT)
210 .. kernel-doc:: drivers/gpu/drm/i915/intel_bios.c
213 .. kernel-doc:: drivers/gpu/drm/i915/intel_vbt_defs.h
219 .. kernel-doc:: drivers/gpu/drm/i915/intel_dpll_mgr.c
222 .. kernel-doc:: drivers/gpu/drm/i915/intel_dpll_mgr.c
225 .. kernel-doc:: drivers/gpu/drm/i915/intel_dpll_mgr.h
228 Memory Management and Command Submission
229 ========================================
231 This sections covers all things related to the GEM implementation in the
237 .. kernel-doc:: drivers/gpu/drm/i915/i915_cmd_parser.c
238 :doc: batch buffer command parser
240 .. kernel-doc:: drivers/gpu/drm/i915/i915_cmd_parser.c
246 .. kernel-doc:: drivers/gpu/drm/i915/i915_gem_batch_pool.c
249 .. kernel-doc:: drivers/gpu/drm/i915/i915_gem_batch_pool.c
252 Logical Rings, Logical Ring Contexts and Execlists
253 --------------------------------------------------
255 .. kernel-doc:: drivers/gpu/drm/i915/intel_lrc.c
256 :doc: Logical Rings, Logical Ring Contexts and Execlists
258 .. kernel-doc:: drivers/gpu/drm/i915/intel_lrc.c
264 .. kernel-doc:: drivers/gpu/drm/i915/i915_gem_gtt.c
265 :doc: Global GTT views
267 .. kernel-doc:: drivers/gpu/drm/i915/i915_gem_gtt.c
270 GTT Fences and Swizzling
271 ------------------------
273 .. kernel-doc:: drivers/gpu/drm/i915/i915_gem_fence_reg.c
276 Global GTT Fence Handling
277 ~~~~~~~~~~~~~~~~~~~~~~~~~
279 .. kernel-doc:: drivers/gpu/drm/i915/i915_gem_fence_reg.c
280 :doc: fence register handling
282 Hardware Tiling and Swizzling Details
283 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
285 .. kernel-doc:: drivers/gpu/drm/i915/i915_gem_fence_reg.c
286 :doc: tiling swizzling details
291 .. kernel-doc:: drivers/gpu/drm/i915/i915_gem_tiling.c
294 .. kernel-doc:: drivers/gpu/drm/i915/i915_gem_tiling.c
295 :doc: buffer object tiling
297 Buffer Object Eviction
298 ----------------------
300 This section documents the interface functions for evicting buffer
301 objects to make space available in the virtual gpu address spaces. Note
302 that this is mostly orthogonal to shrinking buffer objects caches, which
303 has the goal to make main memory (shared with the gpu through the
304 unified memory architecture) available.
306 .. kernel-doc:: drivers/gpu/drm/i915/i915_gem_evict.c
309 Buffer Object Memory Shrinking
310 ------------------------------
312 This section documents the interface function for shrinking memory usage
313 of buffer object caches. Shrinking is used to make main memory
314 available. Note that this is mostly orthogonal to evicting buffer
315 objects, which has the goal to make space in gpu virtual address spaces.
317 .. kernel-doc:: drivers/gpu/drm/i915/i915_gem_shrinker.c
323 GuC-specific firmware loader
324 ----------------------------
326 .. kernel-doc:: drivers/gpu/drm/i915/intel_guc_loader.c
327 :doc: GuC-specific firmware loader
329 .. kernel-doc:: drivers/gpu/drm/i915/intel_guc_loader.c
332 GuC-based command submission
333 ----------------------------
335 .. kernel-doc:: drivers/gpu/drm/i915/i915_guc_submission.c
336 :doc: GuC-based command submission
338 .. kernel-doc:: drivers/gpu/drm/i915/i915_guc_submission.c
344 .. kernel-doc:: drivers/gpu/drm/i915/intel_guc_fwif.h
345 :doc: GuC Firmware Layout
350 This sections covers all things related to the tracepoints implemented
353 i915_ppgtt_create and i915_ppgtt_release
354 ----------------------------------------
356 .. kernel-doc:: drivers/gpu/drm/i915/i915_trace.h
357 :doc: i915_ppgtt_create and i915_ppgtt_release tracepoints
359 i915_context_create and i915_context_free
360 -----------------------------------------
362 .. kernel-doc:: drivers/gpu/drm/i915/i915_trace.h
363 :doc: i915_context_create and i915_context_free tracepoints
368 .. kernel-doc:: drivers/gpu/drm/i915/i915_trace.h
369 :doc: switch_mm tracepoint
376 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
377 :doc: i915 Perf Overview
379 Comparison with Core Perf
380 -------------------------
381 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
382 :doc: i915 Perf History and Comparison with Core Perf
384 i915 Driver Entry Points
385 ------------------------
387 This section covers the entrypoints exported outside of i915_perf.c to
388 integrate with drm/i915 and to handle the `DRM_I915_PERF_OPEN` ioctl.
390 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
391 :functions: i915_perf_init
392 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
393 :functions: i915_perf_fini
394 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
395 :functions: i915_perf_register
396 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
397 :functions: i915_perf_unregister
398 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
399 :functions: i915_perf_open_ioctl
400 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
401 :functions: i915_perf_release
406 This section covers the stream-semantics-agnostic structures and functions
407 for representing an i915 perf stream FD and associated file operations.
409 .. kernel-doc:: drivers/gpu/drm/i915/i915_drv.h
410 :functions: i915_perf_stream
411 .. kernel-doc:: drivers/gpu/drm/i915/i915_drv.h
412 :functions: i915_perf_stream_ops
414 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
415 :functions: read_properties_unlocked
416 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
417 :functions: i915_perf_open_ioctl_locked
418 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
419 :functions: i915_perf_destroy_locked
420 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
421 :functions: i915_perf_read
422 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
423 :functions: i915_perf_ioctl
424 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
425 :functions: i915_perf_enable_locked
426 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
427 :functions: i915_perf_disable_locked
428 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
429 :functions: i915_perf_poll
430 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
431 :functions: i915_perf_poll_locked
433 i915 Perf Observation Architecture Stream
434 -----------------------------------------
436 .. kernel-doc:: drivers/gpu/drm/i915/i915_drv.h
437 :functions: i915_oa_ops
439 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
440 :functions: i915_oa_stream_init
441 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
442 :functions: i915_oa_read
443 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
444 :functions: i915_oa_stream_enable
445 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
446 :functions: i915_oa_stream_disable
447 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
448 :functions: i915_oa_wait_unlocked
449 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
450 :functions: i915_oa_poll_wait
452 All i915 Perf Internals
453 -----------------------
455 This section simply includes all currently documented i915 perf internals, in
456 no particular order, but may include some more minor utilities or platform
457 specific details than found in the more high-level sections.
459 .. kernel-doc:: drivers/gpu/drm/i915/i915_perf.c
462 .. WARNING: DOCPROC directive not supported: !Cdrivers/gpu/drm/i915/i915_irq.c