kernel/linux.git/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c, branch v6.19.11

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: Clear overflow for SRIOV

2025-04-21T14:55:51+00:00

For VF, it doesn't have the permission to clear overflow, clear the bit by reset. Signed-off-by: Emily Deng Acked-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amdgpu: Show warning message if IH ring overflow

2024-12-18T17:39:07+00:00

If IH primary ring and KFD ih fifo overflows, we may miss CP, SDMA interrupts and cause application soft hang. Show warning message with ring name if overflow happens. Add function to get ih ring name to avoid duplicating it. To keep warning message consistent between GPU generations, change all *_ih.c except ASICs older than Vega which has only one ih ring. Signed-off-by: Philip Yang Reviewed-by: Christian König Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher

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