kernel/linux.git/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c, branch v6.18.21

drm/amdgpu: fix type for wptr in ring backup

2026-01-30T09:32:20+00:00

[ Upstream commit 095ca815174e51fc0049771712d5455cabd7231e ] Needs to be a u64. Fixes: 77cc0da39c7c ("drm/amdgpu: track ring state associated with a fence") Reviewed-by: Christian König Signed-off-by: Alex Deucher (cherry picked from commit 56fff1941abd3ca3b6f394979614ca7972552f7f) Signed-off-by: Sasha Levin

drm/amdgpu: set an error on all fences from a bad context

2025-10-13T18:14:15+00:00

When we backup ring contents to reemit after a queue reset, we don't backup ring contents from the bad context. When we signal the fences, we should set an error on those fences as well. v2: misc cleanups v3: add locking for fence error, fix comment (Christian) v4: fix wrap around, locking (Christian) Fixes: 77cc0da39c7c ("drm/amdgpu: track ring state associated with a fence") Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: handle wrap around in reemit handling

2025-10-13T18:14:15+00:00

Compare the sequence numbers directly. Fixes: 77cc0da39c7c ("drm/amdgpu: track ring state associated with a fence") Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu/fence: Remove redundant 0 value initialization

2025-08-27T17:57:47+00:00

The amdgpu_fence struct is already zeroed by kzalloc(). It's redundant to initialize am_fence->context to 0. Reviewed-by: Christian König Signed-off-by: Liao Yuanhong Signed-off-by: Alex Deucher

drm/amdgpu: Fix kdoc style in amdgpu_fence.c

2025-08-04T18:27:28+00:00

The initial comment block before amdgpu_fence_driver_guilty_force_completion() incorrectly used '/**' but is not a kernel-doc comment, causing build warnings. Fixes the below with gcc W=1: drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c:742: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * Kernel queue reset handling Cc: Christian König Cc: Alex Deucher Signed-off-by: Srinivasan Shanmugam Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amdgpu: track ring state associated with a fence

2025-07-16T20:14:11+00:00

We need to know the wptr and sequence number associated with a fence so that we can re-emit the unprocessed state after a ring reset. Pre-allocate storage space for the ring buffer contents and add helpers to save off and re-emit the unprocessed state so that it can be re-emitted after the queue is reset. Reviewed-by: Christian König Signed-off-by: Alex Deucher

Merge tag 'amd-drm-next-6.17-2025-07-01' of https://gitlab.freedesktop.org/agd5f/linux into drm-next

2025-07-04T00:06:29+00:00

amd-drm-next-6.17-2025-07-01: amdgpu: - FAMS2 fixes - OLED fixes - Misc cleanups - AUX fixes - DMCUB updates - SR-IOV hibernation support - RAS updates - DP tunneling fixes - DML2 fixes - Backlight improvements - Suspend improvements - Use scaling for non-native modes on eDP - SDMA 4.4.x fixes - PCIe DPM fixes - SDMA 5.x fixes - Cleaner shader updates for GC 9.x - Remove fence slab - ISP genpd support - Parition handling rework - SDMA FW checks for userq support - Add missing firmware declaration - Fix leak in amdgpu_ctx_mgr_entity_fini() - Freesync fix - Ring reset refactoring - Legacy dpm verbosity changes amdkfd: - GWS fix - mtype fix for ext coherent system memory - MMU notifier fix - gfx7/8 fix radeon: - CS validation support for additional GL extensions - Bump driver version for new CS validation checks From: Alex Deucher Link: https://lore.kernel.org/r/20250701194707.32905-1-alexander.deucher@amd.com Signed-off-by: Dave Airlie

drm/amdgpu: remove job parameter from amdgpu_fence_emit()

2025-06-30T15:57:06+00:00

What we actually care about is the amdgpu_fence object so pass that in explicitly to avoid possible mistakes in the future. The job_run_counter handling can be safely removed at this point as we no longer support job resubmission. Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: Convert from DRM_* to dev_*

2025-06-30T15:54:55+00:00

Convert from generic DRM_* to dev_* calls to have device context info. Signed-off-by: Lijo Lazar Reviewed-by: Asad Kamal Signed-off-by: Alex Deucher

drm/amdgpu: remove fence slab

2025-06-24T14:00:03+00:00

Just use kmalloc for the fences in the rare case we need an independent fence. Reviewed-by: Christian König Signed-off-by: Alex Deucher