Chen Li 959f053a01
radeon: use memcpy_to/fromio for UVD fw upload ...
[ Upstream commit ab8363d3875a83f4901eb1cc00ce8afd24de6c85 ]
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 ba0b2275a678 ("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 >
Signed-off-by: Sasha Levin <sashal@kernel.org >
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