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Implement the necessary functionality to support the VCE1.
This implementation is based on:
- VCE2 code from amdgpu
- VCE1 code from radeon (the old driver)
- Some trial and error
A subsequent commit will ensure correct mapping for
the VCPU BO, which will make this actually work.
v2:
- Use memset_io more.
- Use memcpy_toio more.
- Remove __func__ from warnings.
- Don't reserve and map the VCPU BO anymore.
- Add empty line to multi-line comments
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Co-developed-by: Alexandre Demers <alexandre.f.demers@gmail.com>
Signed-off-by: Alexandre Demers <alexandre.f.demers@gmail.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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