kernel/linux.git/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h, branch v5.16.18

drm/amdgpu: nuke the ih reentrant lock

2021-03-24T03:30:23+00:00

Interrupts on are non-reentrant on linux. This is just an ancient leftover from radeon where irq processing was kicked of from different places. Signed-off-by: Christian König Reviewed-by: Daniel Vetter Signed-off-by: Alex Deucher

drm/amdgpu: add ih waiter on process until checkpoint

2021-03-24T03:10:57+00:00

Add IH function to allow caller to wait until ring entries are processed until the checkpoint write pointer. This will be primarily used by HMM to drain pending page fault interrupts before memory unmap to prevent HMM from handling stale interrupts. Suggested-by: Christian König Signed-off-by: Jonathan Kim Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: add a helper function to decode iv

2020-12-23T20:05:07+00:00

since from soc15, all the chips share the same iv format. create a common helper to decode iv Signed-off-by: Hawking Zhang Acked-by: Christian König Acked-by: Felix Kuehling Reviewed-by: Dennis Li Reviewed-by: Feifei Xu Signed-off-by: Alex Deucher

drm/amdgpu: add amdgpu_ih_regs structure

2020-12-23T20:03:21+00:00

amdgpu_ih_regs holds all the registers for an ih ring Signed-off-by: Hawking Zhang Reviewed-by: Christian König Acked-by: Felix Kuehling Reviewed-by: Dennis Li Reviewed-by: Feifei Xu Signed-off-by: Alex Deucher

drm/amdgpu: add infrastructure for soft IH ring

2020-11-24T17:06:38+00:00

Add a soft IH ring implementation similar to the hardware IH1/2. This can be used if the hardware delegation of interrupts to IH1/2 doesn't work for some reason. Signed-off-by: Christian König Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher

drm/amdgpu: limit the number of IVs processed at once

2019-03-19T20:36:58+00:00

Only process a maximum of 32 IVs before writing back the RPTR. This improves hw handling when we get close to an overflow in the ring buffer. Signed-off-by: Christian König Reviewed-by: Michel Dänzer Signed-off-by: Alex Deucher

drm/amdgpu: cleanup amdgpu_ih_process a bit more

2019-02-13T22:47:11+00:00

Remove the callback and call the dispatcher directly. Signed-off-by: Christian König Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher

drm/amdgpu: simplify IH programming

2019-01-14T20:04:47+00:00

Calculate all the addresses and pointers in amdgpu_ih.c Signed-off-by: Christian König Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amdgpu: add IH ring to ih_get_wptr/ih_set_rptr v2

2019-01-14T20:04:47+00:00

Let's start to support multiple rings. v2: decode IV is needed as well Signed-off-by: Christian König Acked-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amdgpu: move IV prescreening into the GMC code

2018-12-07T23:14:26+00:00

The GMC/VM subsystem is causing the faults, so move the handling here as well. Signed-off-by: Christian König Reviewed-by: Felix Kuehling Acked-by: Alex Deucher Signed-off-by: Alex Deucher