drm/amdgpu: Add initial version of XCP routines
Within a device, an accelerator core partition can be constituted with different IP instances. These partitions are spatial in nature. Number of partitions which can exist at the same time depends on the 'partition mode'. Add a manager entity which is responsible for switching between different partition modes and maintaining partitions. It is also responsible for suspend/resume of different partitions. Signed-off-by: Lijo Lazar <lijo.lazar@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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