kernel.git/Documentation/gpu/i915.rst, branch linux-6.4.y

drm/i915/mtl: Handle wopcm per-GT and limit calculations.

2022-11-14T18:11:47Z

With MTL standalone media architecture the wopcm layout has changed, with separate partitioning in WOPCM for the root GT GuC and the media GT GuC. The size of WOPCM is 4MB with the lower 2MB reserved for the media GT and the upper 2MB for the root GT. Given that MTL has GuC deprivilege, the WOPCM registers are pre-locked by the bios. Therefore, we can skip all the math for the partitioning and just limit ourselves to sanity-checking the values. v2: fix makefile file ordering (Jani) v3: drop XELPM_SAMEDIA_WOPCM_SIZE, check huc instead of VDBOX (John) v4: further clarify commit message, remove blank line (John) Signed-off-by: Aravind Iddamsetty Signed-off-by: Daniele Ceraolo Spurio Cc: Matt Roper Cc: John Harrison Cc: Alan Previn Cc: Jani Nikula Reviewed-by: John Harrison Link: https://patchwork.freedesktop.org/patch/msgid/20221108020600.3575467-5-daniele.ceraolospurio@intel.com

drm/i915/gt: Cleanup interface for MCR operations

2022-06-17T15:05:40Z

Let's replace the assortment of intel_gt_* and intel_uncore_* functions that operate on MCR registers with a cleaner set of interfaces: * intel_gt_mcr_read -- unicast read from specific instance * intel_gt_mcr_read_any[_fw] -- unicast read from any non-terminated instance * intel_gt_mcr_unicast_write -- unicast write to specific instance * intel_gt_mcr_multicast_write[_fw] -- multicast write to all instances We'll also replace the historic "slice" and "subslice" terminology with "group" and "instance" to match the documentation for more recent platforms; these days MCR steering applies to more types of replication than just slice/subslice. v2: - Reference the new kerneldoc from i915.rst. (Jani) - Tweak the wording of the documentation for a couple functions to clarify the difference between "_fw" and non-"_fw" forms. v3: - s/read/write/ to fix copy-paste mistake in a couple comments. (Harish) Signed-off-by: Matt Roper Acked-by: Jani Nikula Reviewed-by: Harish Chegondi Link: https://patchwork.freedesktop.org/patch/msgid/20220615001019.1821989-3-matthew.d.roper@intel.com

Merge drm/drm-next into drm-intel-gt-next

2022-04-21T17:48:26Z

In order to get the GSC Support merged on drm-intel-gt-next in a clean fashion we needed this ATS-M patch to avoid conflict in i915_pci.c: commit 412c942bdfae ("drm/i915/ats-m: add ATS-M platform info") -- Fixing a silent conflict on drivers/gpu/drm/i915/gt/intel_gt_gmch.c: - if (!intel_vtd_active(i915)) + if (!i915_vtd_active(i915)) Signed-off-by: Rodrigo Vivi

drm/i915: Expose client engine utilisation via fdinfo

2022-04-05T07:40:57Z

Similar to AMD commit 874442541133 ("drm/amdgpu: Add show_fdinfo() interface"), using the infrastructure added in previous patches, we add basic client info and GPU engine utilisation for i915. Example of the output: pos: 0 flags: 0100002 mnt_id: 21 drm-driver: i915 drm-pdev: 0000:00:02.0 drm-client-id: 7 drm-engine-render: 9288864723 ns drm-engine-copy: 2035071108 ns drm-engine-video: 0 ns drm-engine-video-enhance: 0 ns v2: * Update for removal of name and pid. v3: * Use drm_driver.name. v4: * Added drm-engine-capacity- tag. * Fix typo. (Umesh) v5: * Don't output engine data before Gen8. Signed-off-by: Tvrtko Ursulin Cc: David M Nieto Cc: Christian König Cc: Daniel Vetter Cc: Chris Healy Acked-by: Christian König Reviewed-by: Umesh Nerlige Ramappa Acked-by: Rob Clark Acked-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20220401142205.3123159-9-tvrtko.ursulin@linux.intel.com

docs: gpu: i915.rst: Fix DRRS documentation

2022-03-29T13:14:01Z

intel_drrs_enable() and intel_drrs_disable() were renamed to intel_drrs_activate() and intel_drrs_deactivate() in commit 54903c7a6b40 ("drm/i915: s/enable/active/ for DRRS") and it is causing warnings when generating the kernel documentation. But as for a while DRRS has its own file, so here just let the tool generate the documentation for all exported and documented functions in intel_drrs.c. Cc: Ville Syrjälä Cc: Rodrigo Vivi Signed-off-by: José Roberto de Souza Reviewed-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20220325183832.146472-1-jose.souza@intel.com

drm/i915/guc: Update to GuC version 69.0.3

2022-01-11T19:47:36Z

Update to the latest GuC release. The latest GuC firmware introduces a number of interface changes: GuC may return NO_RESPONSE_RETRY message for requests sent over CTB. Add support for this reply and try resending the request again as a new CTB message. A KLV (key-length-value) mechanism is now used for passing configuration data such as CTB management. With the new KLV scheme, the old CTB management actions are no longer used and are removed. Register capture on hang is now supported by GuC. Full i915 support for this will be added by a later patch. A minimum support of providing capture memory and register lists is required though, so add that in. The device id of the current platform needs to be provided at init time. The 'poll CS' w/a (Wa_22012773006) was blanket enabled by previous versions of GuC. It must now be explicitly requested by the KMD. So, add in the code to turn it on when relevant. The GuC log entry format has changed. This requires adding a new field to the log header structure to mark the wrap point at the end of the buffer (as the buffer size is no longer a multiple of the log entry size). New CTB notification messages are now sent for some things that were previously only sent via MMIO notifications. Of these, the crash dump notification was not really being handled by i915. It called the log flush code but that only flushed the regular debug log and then only if relay logging was enabled. So just report an error message instead. The 'exception' notification was just being ignored completely. So add an error message for that as well. Note that in either the crash dump or the exception case, the GuC is basically dead. The KMD will detect this via the heartbeat and trigger both an error log (which will include the crash dump as part of the GuC log) and a GT reset. So no other processing is really required. Signed-off-by: John Harrison Signed-off-by: Michal Wajdeczko Reviewed-by: Matthew Brost Link: https://patchwork.freedesktop.org/patch/msgid/20220107000622.292081-3-John.C.Harrison@Intel.com

Merge tag 'drm-intel-gt-next-2021-10-08' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

2021-10-11T08:09:39Z

UAPI Changes: - Add uAPI for using PXP protected objects Mesa changes: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8064 - Add PCI IDs and LMEM discovery/placement uAPI for DG1 Mesa changes: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11584 - Disable engine bonding on Gen12+ except TGL, RKL and ADL-S Cross-subsystem Changes: - Merges 'tip/locking/wwmutex' branch (core kernel tip) - "mei: pxp: export pavp client to me client bus" Core Changes: - Update ttm_move_memcpy for async use (Thomas) Driver Changes: - Enable GuC submission by default on DG1 (Matt B) - Add PXP (Protected Xe Path) support for Gen12 integrated (Daniele, Sean, Anshuman) See "drm/i915/pxp: add PXP documentation" for details! - Remove force_probe protection for ADL-S (Raviteja) - Add base support for XeHP/XeHP SDV (Matt R, Stuart, Lucas) - Handle DRI_PRIME=1 on Intel igfx + Intel dgfx hybrid graphics setup (Tvrtko) - Use Transparent Hugepages when IOMMU is enabled (Tvrtko, Chris) - Implement LMEM backup and restore for suspend / resume (Thomas) - Report INSTDONE_GEOM values in error state for DG2 (Matt R) - Add DG2-specific shadow register table (Matt R) - Update Gen11/Gen12/XeHP shadow register tables (Matt R) - Maintain backward-compatible nested batch behavior on TGL+ (Matt R) - Add new LRI reg offsets for DG2 (Akeem) - Initialize unused MOCS entries to device specific values (Ayaz) - Track and use the correct UC MOCS index on Gen12 (Ayaz) - Add separate MOCS table for Gen12 devices other than TGL/RKL (Ayaz) - Simplify the locking and eliminate some RCU usage (Daniel) - Add some flushing for the 64K GTT path (Matt A) - Mark GPU wedging on driver unregister unrecoverable (Janusz) - Major rework in the GuC codebase, simplify locking and add docs (Matt B) - Add DG1 GuC/HuC firmwares (Daniele, Matt B) - Remember to call i915_sw_fence_fini on guc_state.blocked (Matt A) - Use "gt" forcewake domain name for error messages instead of "blitter" (Matt R) - Drop now duplicate LMEM uAPI RFC kerneldoc section (Daniel) - Fix early tracepoints for requests (Matt A) - Use locked access to ctx->engines in set_priority (Daniel) - Convert gen6/gen7/gen8 read operations to fwtable (Matt R) - Drop gen11/gen12 specific mmio write handlers (Matt R) - Drop gen11 specific mmio read handlers (Matt R) - Use designated initializers for init/exit table (Kees) - Fix syncmap memory leak (Matt B) - Add pretty printing for buddy allocator state debug (Matt A) - Fix potential error pointer dereference in pinned_context() (Dan) - Remove IS_ACTIVE macro (Lucas) - Static code checker fixes (Nathan) - Clean up disabled warnings (Nathan) - Increase timeout in i915_gem_contexts selftests 5x for GuC submission (Matt B) - Ensure wa_init_finish() is called for ctx workaround list (Matt R) - Initialize L3CC table in mocs init (Sreedhar, Ayaz, Ram) - Get PM ref before accessing HW register (Vinay) - Move __i915_gem_free_object to ttm_bo_destroy (Maarten) - Deduplicate frequency dump on debugfs (Lucas) - Make wa list per-gt (Venkata) - Do not define dummy vma in stack (Venkata) - Take pinning into account in __i915_gem_object_is_lmem (Matt B, Thomas) - Do not report currently active engine when describing objects (Tvrtko) - Fix pdfdocs build error by removing nested grid from GuC docs (Akira) - Remove false warning from the rps worker (Tejas) - Flush buffer pools on driver remove (Janusz) - Fix runtime pm handling in i915_gem_shrink (Maarten) - Rework TTM object initialization slightly (Thomas) - Use fixed offset for PTEs location (Michal Wa) - Verify result from CTB (de)register action and improve error messages (Michal Wa) - Fix bug in user proto-context creation that leaked contexts (Matt B) - Re-use Gen11 forcewake read functions on Gen12 (Matt R) - Make shadow tables range-based (Matt R) - Ditch the i915_gem_ww_ctx loop member (Thomas, Maarten) - Use NULL instead of 0 where appropriate (Ville) - Rename pci/debugfs functions to respect file prefix (Jani, Lucas) - Drop guc_communication_enabled (Daniele) - Selftest fixes (Thomas, Daniel, Matt A, Maarten) - Clean up inconsistent indenting (Colin) - Use direction definition DMA_BIDIRECTIONAL instead of PCI_DMA_BIDIRECTIONAL (Cai) - Add "intel_" as prefix in set_mocs_index() (Ayaz) From: Joonas Lahtinen Link: https://patchwork.freedesktop.org/patch/msgid/YWAO80MB2eyToYoy@jlahtine-mobl.ger.corp.intel.com Signed-off-by: Dave Airlie

drm/i915/pxp: add PXP documentation

2021-10-04T17:11:31Z

Now that all the pieces are in place we can add a description of how the feature works. Also modify the comments in struct intel_pxp into kerneldoc. v2: improve doc (Rodrigo) Signed-off-by: Daniele Ceraolo Spurio Cc: Daniel Vetter Cc: Rodrigo Vivi Reviewed-by: Rodrigo Vivi Signed-off-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20210924191452.1539378-17-alan.previn.teres.alexis@intel.com

drm/i915/guc: Add GuC kernel doc

2021-09-13T18:30:56Z

Add GuC kernel doc for all structures added thus far for GuC submission and update the main GuC submission section with the new interface details. v2: - Drop guc_active.lock DOC v3: - Fixup a few kernel doc comments (Daniele) v4 (Daniele): - Implement doc suggestions from John - Add kerneldoc for all members of the GuC structure and pull the file in i915.rst v5 (Daniele): - Implement new doc suggestions from John Signed-off-by: Matthew Brost Signed-off-by: Daniele Ceraolo Spurio Cc: John Harrison Reviewed-by: John Harrison Signed-off-by: John Harrison Link: https://patchwork.freedesktop.org/patch/msgid/20210909164744.31249-24-matthew.brost@intel.com

drm/i915/display: Renaming DRRS functions to intel_drrs_*()

2021-08-30T19:39:59Z

We had a mix of intel_edp_drrs_*(), intel_dp_drrs_*() and intel_dp_set_drrs_state(), so properly renaming all functions to keep the same pattern. While at it, also dropping intel_dp_set_drrs_state from the documentation as it is a static function. v3: - dropping documentation style comment in static function (intel_drrs_set_state) Reviewed-by: Rodrigo Vivi Cc: Jani Nikula Cc: Rodrigo Vivi Signed-off-by: José Roberto de Souza Link: https://patchwork.freedesktop.org/patch/msgid/20210827174253.51122-3-jose.souza@intel.com