radeon: use memcpy_to/fromio for UVD fw upload

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I met a gpu addr bug recently and the kernel log
tells me the pc is memcpy/memset and link register is
radeon_uvd_resume.

As we know, in some architectures, optimized memcpy/memset
may not work well on device memory. Trival memcpy_toio/memset_io
can fix this problem.

BTW, amdgpu has already done it in:
commit ba0b2275a6 ("drm/amdgpu: use memcpy_to/fromio for UVD fw upload"),
that's why it has no this issue on the same gpu and platform.

Signed-off-by: Chen Li <chenli@uniontech.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Chen Li 2021-06-04 16:43:02 +08:00 • committed by Alex Deucher

parent c0f2b640e5

commit 65e06b7873

1 changed files with 2 additions and 2 deletions

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drivers/gpu/drm/radeon/radeon_uvd.c

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