kernel/linux.git/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c, branch v6.6.132

drm/amdgpu: Increase soft IH ring size

2023-07-12T14:57:25+00:00

Retry faults are delegated to soft IH ring and then processed by deferred worker. Current soft IH ring size PAGE_SIZE can store 128 entries, which may overflow and drop retry faults, causes HW stucks because the retry fault is not recovered. Increase soft IH ring size to 8KB, enough to store 256 CAM entries because we clear the CAM entry after handling the retry fault from soft ring. Define macro IH_RING_SIZE and IH_SW_RING_SIZE to remove duplicate constant. Show warning message if soft IH ring overflows with CAM enabled because this should not happen. Signed-off-by: Philip Yang Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher

drm/amdgpu: remove pasid_src field from IV entry

2023-06-09T13:25:47+00:00

PASID_SRC is not actually present in the Interrupt Packet, the field is taken as reserved bits now. So remove it from IV entry to avoid misuse. Signed-off-by: Xiaomeng Hou Reviewed-by: Aaron Liu Signed-off-by: Alex Deucher

drm/amdgpu: allocate doorbell index for multi-die case

2023-04-21T12:49:37+00:00

Allocate different doorbell index for kiq/kcq rings on each die Signed-off-by: Le Ma Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher

drm/amdgpu: drop unexpected word 'for' in comments

2022-06-23T21:23:13+00:00

there is an unexpected word 'for' in the comments that need to be dropped file - drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c line - 245 * position and also advance the position for for Vega10 changed to: * position and also advance the position for Vega10 Signed-off-by: Jiang Jian Signed-off-by: Alex Deucher

drm/amdgpu: Handle fault with same timestamp

2021-12-13T21:32:35+00:00

Remove not unique timestamp WARNING as same timestamp interrupt happens on some chips, Drain fault need to wait for the processed_timestamp to be truly greater than the checkpoint or the ring to be empty to be sure no stale faults are handled. Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1818 Signed-off-by: Philip Yang Reviewed-by: Felix Kuehling Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: handle IH ring1 overflow

2021-12-01T21:03:34+00:00

IH ring1 is used to process GPU retry fault, overflow is enabled to drain retry fault because we want receive other interrupts while handling retry fault to recover range. There is no overflow flag set when wptr pass rptr. Use timestamp of rptr and wptr to handle overflow and drain retry fault. If fault timestamp goes backward, the fault is filtered and should not be processed. Drain fault is finished if processed_timestamp is equal to or larger than checkpoint timestamp. Add amdgpu_ih_functions interface decode_iv_ts for different chips to get timestamp from IV entry with different iv size and timestamp offset. amdgpu_ih_decode_iv_ts_helper is used for vega10, vega20, navi10. Signed-off-by: Philip Yang Reviewed-by: Felix Kuehling Acked-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: IH process reset count when restart

2021-11-24T19:06:53+00:00

Otherwise when IH process restart, count is zero, the loop will not exit to wake_up_all after processing AMDGPU_IH_MAX_NUM_IVS interrupts. Signed-off-by: Philip Yang Reviewed-by: Christian König Signed-off-by: Alex Deucher

Merge drm/drm-next into drm-misc-next

2021-05-22T05:17:05+00:00

Backmerging from drm/drm-next to the patches for AMD devices for v5.14. Signed-off-by: Thomas Zimmermann

drm/amdgpu: Handle IOMMU enabled case.

2021-05-20T03:50:27+00:00

Problem: Handle all DMA IOMMU group related dependencies before the group is removed. Those manifest themself in that when IOMMU enabled DMA map/unmap is dependent on the presence of IOMMU group the device belongs to but, this group is released once the device is removed from PCI topology. Fix: Expedite all such unmap operations to pci remove driver callback. v5: Drop IOMMU notifier and switch to lockless call to ttm_tt_unpopulate v6: Drop the BO unamp list v7: Drop amdgpu_gart_fini In amdgpu_ih_ring_fini do uncinditional check (!ih->ring) to avoid freeing uniniitalized rings. Call amdgpu_ih_ring_fini unconditionally. v8: Add deatiled explanation Signed-off-by: Andrey Grodzovsky Reviewed-by: Felix Kuehling Link: https://patchwork.freedesktop.org/patch/msgid/20210517143851.475058-1-andrey.grodzovsky@amd.com

drm/amdgpu: return IH ring drain finished if ring is empty

2021-04-29T03:36:05+00:00

Sometimes IH do not setup ring wptr overflow flag after wptr exceed rptr. As a workaround, if IH rptr equals to wptr, ring is empty, return true to indicate IH ring checkpoint is processed, IH ring drain is finished. Signed-off-by: Philip Yang Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher