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2026-09-02drm/amd/display: Skip ACPI backlight caps testAlex Hung
[WHAT] dm_test_backlight_caps_aux_support_noop() covers the !CONFIG_ACPI branch of amdgpu_dm_update_backlight_caps() and is wrapped in #if !defined(CONFIG_ACPI). An ACPI build silently drops it from the suite and never compiles it. dm_test_backlight_caps_non_aux_sets_defaults() adds nothing: the defaults block it asserts is already exercised by dm_test_register_backlight_device_success(). [HOW] Compile dm_test_backlight_caps_aux_support_noop() unconditionally and call kunit_skip() when CONFIG_ACPI is enabled, so it is reported as skipped instead of disappearing. Drop the redundant test and group the remaining KUNIT_CASE entries under amdgpu_dm_update_backlight_caps(). Assisted-by: Copilot:Claude-Opus-5 Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Test backlight caps validationAlex Hung
[WHAT] The sanity check applied to the backlight caps reported by the firmware sits inside a CONFIG_ACPI block. The UML KUnit build cannot enable CONFIG_ACPI, so that logic is never built and stays uncovered. [HOW] Move the check into amdgpu_dm_validate_backlight_caps() and build it whenever CONFIG_ACPI or the KUnit tests are enabled. Behaviour of amdgpu_dm_update_backlight_caps() is unchanged. Add a parameterized test for amdgpu_dm_validate_backlight_caps() covering sane caps, a max above the 8-bit range, a negative min and a spread narrower than AMDGPU_DM_MIN_SPREAD. Assisted-by: Copilot:Claude-Opus-5 Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Change RBBMIF timeout control conditionsDillon Varone
[WHY&HOW] RBBMIF timeout should not be disabled to prevent register access hang. Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Signed-off-by: Dillon Varone <Dillon.Varone@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Remove internal referencesSamson Tam
[WHY/HOW] Rename function and updated comments to remove internal references. Reviewed-by: Dmytro Laktyushkin <dmytro.laktyushkin@amd.com> Signed-off-by: Samson Tam <Samson.Tam@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Remove pipe_ctx param from MPC_VISUAL_CONFIRMTomasz Siemek
[WHY] Hwss executors shouldn't be coupled to complex dc structs such as pipe_ctx. [HOW] - Use mpc function instead of hwseq extension. - Swap pipe_ctx for tg_color struct as BLS param. Reviewed-by: Ilya Bakoulin <ilya.bakoulin@amd.com> Signed-off-by: Tomasz Siemek <tomasz.siemek@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Update HDMI link rate and DSC handling for DCN60Relja Vojvodic
[WHAT] - Updated switch cases to handle new link rates - Reverted set stream attribute behaviour to DCN401 version to unblock DSC on DCN 60 Reviewed-by: Dillon Varone <dillon.varone@amd.com> Signed-off-by: Relja Vojvodic <Relja.Vojvodic@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Model ASSERT as path terminatorAlex Hung
[WHAT] ASSERT() and ASSERT_CRITICAL() expand to a WARN_ON() test that falls through, because dc_breakpoint() is a no-op unless CONFIG_DEBUG_KERNEL_DC is set. Static analysers read that test as proof the asserted condition can fail, then keep walking the failing path because nothing stops it. The assert therefore manufactures the very defect it guards against, and Coverity reports DIVIDE_BY_ZERO defects whose entire path is the assert itself. [HOW] Redefine both macros to call a declaration-only __coverity_panic__() when the asserted condition fails, which marks the failing path as unreachable and leaves only genuinely reachable defects. The override is guarded by __COVERITY__, which is defined only while the analyser captures the build, so the code emitted by a normal build is unchanged. Assisted-by: Copilot:Claude-Opus-5 Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Remove const Qualifier From Non-Pointer FieldsAustin Zheng
[WHY/HOW] Integer values for dml2_core_calcs_CalculateWatermarksMALLUseAndDRAMSpeedChangeSupport_params should not have the const qualifier. This prevents using different values of the inputs when the function is called again. Reviewed-by: Dillon Varone <dillon.varone@amd.com> Signed-off-by: Austin Zheng <Austin.Zheng@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Fix Order Of Operation In Calculate Flip ScheduleAustin Zheng
[WHY/HOW] Tno_bw_flip is a time so it should be a part of the denominator in the bandwidth calculation. Fix order of operation so Tno_bw_flip is properly accounted for when calculating the lower bandwidth bound. Reviewed-by: Dillon Varone <dillon.varone@amd.com> Signed-off-by: Austin Zheng <Austin.Zheng@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Clean up Per-DPM StructAustin Zheng
[WHY/HOW] Deprecate original organization in favor for the organization used by v2. External usages no longer used so it can be removed entirely. Reviewed-by: Dillon Varone <dillon.varone@amd.com> Signed-off-by: Austin Zheng <Austin.Zheng@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Re-enable multi-dwb supportDillon Varone
[WHY&HOW] DCN5+ supports multi-dwb per stream. Reviewed-by: Dillon Varone <dillon.varone@amd.com> Signed-off-by: Dillon Varone <Dillon.Varone@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Add max_downscale_src_width debugfs for IGT validationTony Qi
[WHY] The maximum source viewport width the ASIC can downscale from is held in dc->debug.max_downscale_src_width and is not visible to userspace. Tests (e.g. IGT amd_cursor_overlay scaling subtests) that downscale a plane cannot tell whether a given source width is a genuine hardware limitation or a driver defect, so they cannot correctly distinguish a SKIP from a FAIL. [HOW] Add a read-only per-connector max_downscale_src_width debugfs file that reports dc->debug.max_downscale_src_width, following the existing internal_display debugfs entry. A value of 0 means no limit. Assisted-by: Claude:opus-4.8 Reviewed-by: Alex Hung <alex.hung@amd.com> Signed-off-by: Tony Qi <Haoming.Qi@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Do not use panel_inst in prPeichen Huang
[WHY] Panel Replay has different index definition from other eDP features. So we should avoid using panel_index in pr. [HOW] Rename the it to pr_panel_inst Reviewed-by: Leon Huang <leon.huang1@amd.com> Signed-off-by: Peichen Huang <PeiChen.Huang@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Guard DAL port idle optimizations by ASIC revDillon Varone
[WHY&HOW] Not all ASIC revisions support the DAL port idle optimizations. Guard the code with a check for ASIC rev. Reviewed-by: Alvin Lee <alvin.lee2@amd.com> Signed-off-by: Dillon Varone <Dillon.Varone@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Preparations To Move DML Wrapper Out Of DMLAustin Zheng
[WHY/HOW] DML wrapper has dependencies on both DC and DML. Therefore it should be in its own component instead of under the DML2 folder. A series of changes are required to move the files without breaking compilation Reviewed-by: Dillon Varone <dillon.varone@amd.com> Signed-off-by: Austin Zheng <Austin.Zheng@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Move cursor SDR white level calculation out of hwss executorTomasz Siemek
[WHY] Cursor SDR white level calculation is common across DCN generations and does not require an ASIC-specific HWSS implementation. Keeping it in the DCN10 HWSS extension duplicated generic policy in generation-specific code and made block sequence execution depend on mutable pipe context. [HOW] Move cursor SDR white level calculation into dc_hw_sequencer. Store the calculated DPP cursor attributes in the block sequence so execution only invokes set_optional_cursor_attributes. Reviewed-by: Ilya Bakoulin <ilya.bakoulin@amd.com> Signed-off-by: Tomasz Siemek <tomasz.siemek@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Fix DPP PRE_GAM register offset on DCN60Alvin Lee
[WHY] dcn60 uses dpp50_set_pregam_state, which reads PRE_GAM through the dcn50_dpp_registers layout. PRE_GAM sat at a different offset in dcn50 (based on DCN401) vs dcn60 (based on DCN42), so the cast landed on the wrong register which causes the wrong address to be used [HOW] Rebase the DPP macro inheritance so PRE_GAM shares a common offset: DCN50 lists now inherit from DCN42, and DCN60 lists inherit from DCN50. The dcn60 struct layout is unchanged, so PRE_GAM aligns between the two and dpp50_set_pregam_state programs the correct address. Reviewed-by: Taimur Hassan <syed.hassan@amd.com> Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Remove fixpt and custom float duplicated codeSamson Tam
[WHY/HOW] fixpt31_32 and custom_float code is duplicated in SPL Remove duplicated code and refer back to dc Cleaned up swap, div64_s64 Move namespace defines to spl_namespace.h Suggested-by: Dave Airlie <airlied@redhat.com> Reviewed-by: Alvin Lee <alvin.lee2@amd.com> Signed-off-by: Samson Tam <Samson.Tam@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Avoid NULL hubp deref for remaining mpcc_id assignmentJames Lin
Previous fix converted most mpcc_id assignments in dc_hw_sequencer.c from pipe_ctx->plane_res.hubp->inst to plane_res.mpcc_inst, but missed the update_visual_confirm and power_on_mpc_mem_pwr paths in hwss_build_fast_sequence(). On DCE ASICs the pipe owns no HUBP, so those two remaining hubp->inst reads can NULL-deref. Use mpcc_inst for the remaining two assignments, matching the rest of the function and avoiding the NULL pointer dereference (same issue addressed upstream by "avoid NULL hubp deref when filling mpcc_id on DCE"). Fixes: 8e4670efd6dd ("drm/amd/display: Use mpcc_id instead of hubp instance") Reviewed-by: Tomasz Siemek <tomasz.siemek@amd.com> Signed-off-by: James Lin <PingLei.Lin@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Move custom float structures from opp.h to custom_float.hSamson Tam
[WHY] Currently it needs to include opp.h to access custom_float structures, which pulls in additional include files that are not necessary. [HOW] Move custom_float structures to custom_float.h, and include this header in opp.h. Add only os_types.h and fixed31_32.h in custom_float.h Suggested-by: Dave Airlie <airlied@redhat.com> Reviewed-by: Alvin Lee <alvin.lee2@amd.com> Signed-off-by: Samson Tam <Samson.Tam@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Set gpuvm min page size to 4K on dcn35/36Roman Li
[WHY] Splash screen corruption on some 8K monitors. [HOW] Set GPUVM min page size to 4K for DCN35/36 to use the correct DML2 calculations, avoiding the corruption path observed during splash. Fixes: 115009d11ccf ("drm/amd/display: Add DCN35 DML2 support") Cc: Mario Limonciello <mario.limonciello@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Alex Hung <alex.hung@amd.com> Signed-off-by: Roman Li <Roman.Li@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Fix DCN5/6 DML2 compilation warningsIvan Lipski
[WHY] A kernel compilation warning was reported caused by upstream of DCN5/6. [HOW] Using plain integer as NULL pointer. Assign NULL to the VActiveLatencyHidingMargin/VActiveLatencyHidingUs pointer members in dml2_core_dcn5_funcs_mode_programming.c, and pass NULL for the pointer arguments to calculate_first_second_splitting() in dml2_pmo_dcn6_stage_optimizers.c. Fixes: 7f7d7ea1fa51 ("drm/amd/display: Add new sources for DCN6") Reviewed-by: Dillon Varone <dillon.varone@amd.com> Signed-off-by: Ivan Lipski <ivan.lipski@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Test colorop error pathsAlex Hung
[WHAT] Add KUnit tests for the failure paths of amdgpu_dm_build_default_pipeline(): a failed allocation and a failed initialization at each of the eight pipeline steps. [HOW] Add struct amdgpu_dm_colorop_kunit_ops, a KUnit-only indirection table for the colorop allocation and the five DRM colorop constructors. The constructors cannot be made to fail through their arguments, so tests install a fake allocator and spies that delegate to the real constructors and override the return value of one selected call. Non-KUnit builds call the same functions directly. Assisted-by: Copilot:Claude-Opus-5 Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Test ISM delayed workersAlex Hung
[WHAT] Add KUnit tests for dm_ism_delayed_work_func() and dm_ism_sso_delayed_work_func(). [HOW] Arm each worker through the FSM, drop dc_lock, then run the handler with flush_delayed_work(). Assisted-by: Copilot:Claude-Opus-5 Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Test ISM idle exit armsAlex Hung
[WHAT] Add KUnit tests for the OPTIMIZED_IDLE and OPTIMIZED_IDLE_SSO previous-state arms of dm_ism_dispatch_power_state(). [HOW] Cascade into each idle state, post EXIT_IDLE_REQUESTED, then check that idle is disallowed and the idle period recorded. These arms run on a state departure rather than on entry, so a single event cannot reach them; the FSM has to occupy the idle state first. Driving both steps through amdgpu_dm_ism_commit_event() keeps the test on the real path instead of calling the dispatcher directly. Both arms end in FULL_POWER_RUNNING and both disallow idle, so the state alone does not tell them apart. Asserting ism->next_record_idx pins the side effect that matters: the idle period is added to the hysteresis history on the way out. Assisted-by: Copilot:Claude-Opus-5 Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Test ISM idle commitAlex Hung
[WHAT] Add KUnit tests for the three idle-optimization commit arms of the ISM FSM: OPTIMIZED_IDLE, OPTIMIZED_IDLE_SSO and TIMER_ABORTED. [HOW] Record idle changes with a stub on dc->hwss.apply_idle_power_optimizations() and read the outcome from dc->idle_optimizations_allowed. DC already owns that callback, so it is the natural injection point. dc_allow_idle_optimizations() returns early when the requested state already matches, so the stub runs only on a real transition and its call count is the number of idle changes the FSM asked for. That count is what separates the three arms, which otherwise all leave idle in the same state. The remaining two commit calls need no double: dc_post_update_surfaces_to_stream() returns on !dc->optimized_required and amdgpu_dm_crtc_set_static_screen_optimze() stops in the replay and PSR event helpers when the link has neither feature enabled. Both are already no-ops on a test dc, so a double would only add upkeep. Assisted-by: Copilot:Claude-Opus-5 Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Add debug bit for force p2cpmHansen Dsouza
[WHY] To allow per panel control of PHY settings. [HOW] Extend panel workaround bits and fields. Reviewed-by: Leo Chen <leo.chen@amd.com> Signed-off-by: Hansen Dsouza <Hansen.Dsouza@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: fix misspelling of "overridden"Linlin Yang
Fix misspelling of "overridden" (missing a 'd') in comments. No functional change. Signed-off-by: Linlin Yang <yanglinlin@kylinos.cn> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amdgpu/ih7.0: Enable retry CAM on Navi 4 dGPUsTimur Kristóf
The retry CAM can filter interrupts which occur repeatedly, such as page fault interrupts when retry faults are enabled. This makes processing those interrupts much more efficient, because the CPU won't have to deal with processing the same interrupt repeatedly. Also change the doorbell range to actually enable the doorbell for the retry CAM. Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amdgpu/ih6.0: Enable retry CAM on Navi 3 dGPUsTimur Kristóf
The retry CAM can filter interrupts which occur repeatedly, such as page fault interrupts when retry faults are enabled. This makes processing those interrupts much more efficient, because the CPU won't have to deal with processing the same interrupt repeatedly. Enable the doorbell for the retry CAM. Also change the doorbell range to actually enable the doorbell for the retry CAM. Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amdgpu/vm: Use init PTE flags in amdgpu_vm_handle_fault()Timur Kristóf
PTE_IS_PTE seems necessary for handling retry faults on GFX12. For reference see: amdgpu_vm_pte_update_flags() that explains the problem svm_range_get_pte_flags() that uses the flag on GFX12 Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amdgpu/gmc12: Use AMDGPU_PTE_IS_PTE flag for init_pte_flags on GFX12.0Timur Kristóf
This flag seems to work around a "fault priority problem" and is necessary for handling faults on GFX12. The kernel seems unable to mitigate retry faults on GFX12 without this flag. For reference see: amdgpu_vm_pte_update_flags() that explains the problem svm_range_get_pte_flags() that uses the flag on GFX12 Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amdgpu/gmc12: Pass cam_index to retry fault handlerTimur Kristóf
This is necessary if we want to make use of the filter CAM. Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amdgpu/gmc11: Pass cam_index to retry fault handlerTimur Kristóf
This is necessary if we want to make use of the filter CAM. Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amdgpu/ih7.0: Use IH_SW_RING_SIZE for soft IH ring instead of PAGE_SIZETimur Kristóf
When there are a lot of retry faults happening, the soft IH ring can fill up really quickly and possibly overflow. PAGE_SIZE was too small, use IH_SW_RING_SIZE to match what other GPU generations are doing. Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amdgpu/ih6.1: Use IH_SW_RING_SIZE for soft IH ring instead of PAGE_SIZETimur Kristóf
When there are a lot of retry faults happening, the soft IH ring can fill up really quickly and possibly overflow. PAGE_SIZE was too small, use IH_SW_RING_SIZE to match what other GPU generations are doing. Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amdgpu/ih: Don't perturb HW registers when accessing soft IH ringTimur Kristóf
The soft IH ring is implemented entirely in software. We shouldn't read (or write) any HW registers when accessing it. Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amdgpu/gfxhub: Enable retry fault interrupts in L2_PROTECTION_FAULT_CNTL2Timur Kristóf
Enable retry fault interrupts when initializing the GFXHUB system aperture registers. Needs to be done for each GFXHUB version, because none of them actually enabled this interrupt. This bit gates all retry fault functionality on Navi GPUs. According to a mailing list conversation with AMD engineers, this register field should have been initialized to 1 according to hardware documentation. But it has been confirmed that it is in fact initialized to 0 by default. I have personally confirmed on both Navi 31 and Navi 48 that the GPU does NOT send any retry fault interrupts without enabling this bit. Initially I wanted to program this field according to the gmc.noretry flag in the previous versions of this patch, but I was asked to just program it always to 1 instead. Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amdgpu: Respect noretry flag for retry faults on GFX12.1Timur Kristóf
When retry faults are disabled (amdgpu.noretry=1), we should program the RETRY_PERMISSION_OR_INVALID_PAGE_FAULT bit to zero. Note that retry faults are enabled by default on GFX12.1 so this just fixes the case when they are explicitly disabled. Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amdgpu: require a job to schedule an IBAlex Deucher
Remove the old direct submit path. This simplifies the code. v2: remove more local variables Reviewed-by: Jesse Zhang <jesse.zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amdgpu: fix Idle BOs list in VM debugfs status infoSunil Khatri
amdgpu_debugfs_vm_bo_status_info() prints the "Idle BOs" section by iterating lists->needs_update, the same list already printed just above under "Moved BOs". struct amdgpu_vm_bo_status has a dedicated idle list, populated whenever a BO's state machine settles, but it was never read here, so genuinely idle BOs never show up in the debugfs output and the "Idle BOs" section duplicates "Moved BOs" instead. Iterate lists->idle for the "Idle BOs" section. Fixes: 4cdbba5a16aa ("drm/amdgpu: restructure VM state machine v4") Signed-off-by: Sunil Khatri <sunil.khatri@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amdgpu: use AMDGPU_GPU_PAGE_SHIFT instead of PAGE_SHIFTSunil Khatri
For different address types the variable PAGE_SHIFT might not work well and it's better to use the GPU specific one Signed-off-by: Sunil Khatri <sunil.khatri@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amdgpu/userq: update the kernel docs for amdgpu_userq_fence_read_wptrSunil Khatri
update the kernel docs for amdgpu_userq_fence_read_wptr. Signed-off-by: Sunil Khatri <sunil.khatri@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amdgpu: make amdgpu_vm_bo_lookup_mapping() take a raw addressSunil Khatri
amdgpu_vm_bo_lookup_mapping() expected callers to pre-shift the address to a page frame number before calling in, unlike its sibling functions amdgpu_vm_bo_map() and amdgpu_vm_bo_replace_map(), which accept a raw address and shift internally. This inconsistency meant every caller had to duplicate the same shift to make it pfn and many place the shift is not AMDGPU_GPU_PAGE_SHIFT but normal PAGE_SHIFT too. Move the shift inside amdgpu_vm_bo_lookup_mapping() and update all callers to stop pre-shifting, so the function's calling convention matches its siblings. Signed-off-by: Sunil Khatri <sunil.khatri@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amdgpu: fix oversubscription timer for sr-iovEric Huang
The KFD/userq software oversubscription-notify timers added to replace GFX11 MES firmware's oversubscription_timer call amdgpu_mes_notify_unmap_queue(), which takes mes->mutex_hidden, the same lock add/remove_hw_queue() use. Under SR-IOV this call can block up to 9s (vs 2.1s bare metal), so MES round-trip latency goes up (world-switch contention) it stalls re-mapping queues and times out KFDQMTest.AllCpQueues. Keep the firmware timer enabled for SR-IOV VFs and skip the software timers there; the issue this works around is bare-metal only. Fixes: 590e26626106 ("drm/amdkfd: workaround 100% gpu usage issue for gfx11") Signed-off-by: Eric Huang <jinhuieric.huang@amd.com> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amd/display: Enable HDMI FRL by defaultFangzhi Zuo
FRL (Fixed Rate Link) is required to drive HDMI 2.1 high-bandwidth modes and is broadly supported on capable sinks, but it was left disabled unless a user explicitly opted in via the amdgpu.dcfeaturemask module parameter. Enable it by default by adding DC_FRL_MASK to the default amdgpu_dc_feature_mask value, keeping the mask semantics unchanged. Signed-off-by: Fangzhi Zuo <jerry.zuo@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amdgpu: switch all IPs to using job for IBsAlex Deucher
Switch remaining direct submissions to using a job structure for IBs. This converts GFX, compute, SDMA, and VPE to using jobs. VCE, UVD, JPEG, and VCN already did. v2: fix missing ib pointer setup spotted by the kernel test robot v3: rebase Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com> Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amdgpu: Update queue reset support versionAmber Lin
Update queue reset required MES version for MES 12.1 to 0x7b since we change the implementation from detect-and-reset method to per-queue-reset method. Signed-off-by: Amber Lin <amber.lin@amd.com> Reviewed-by: Michael Chen <michael.chen@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amdgpu/gfx8: only apply compute quantums to KCQsAlex Deucher
Don't apply to KIQ. Seems to cause problems on KIQ on some ARM platforms. Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5658 Fixes: 91cf34bc5a55 ("drm/amdgpu/gfx8: align mqd settings with KFD") Reviewed-by: Jesse Zhang <jesse.zhang@amd.com> Reviewed-by: Kent Russell <kent.russell@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-09-02drm/amdgpu: correct oversubscription timer interval for gfx11Eric Huang
oversubscription_timer in MES is in micro second, so change the timer's interval in KFD/useq to micro second. Signed-off-by: Eric Huang <jinhuieric.huang@amd.com> Suggested-by: Leo Lin <Leo.Lin@amd.com> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>