drm/amdkfd: Expose HDP registers to user space

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Introduce a new memory type (KFD_IOC_ALLOC_MEM_FLAGS_MMIO_REMAP) and
expose mmio page of HDP registers to user space through this new
memory type.

v2: moved remapped hdp regs to adev struct
v3: rename the new memory type to ALLOC_MEM_FLAGS_MMIO_REMAP
v4: use more generic function name
v5: Fail remapped mmio allocation for asics before gfx9

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Oak Zeng 2019-04-11 14:43:39 -05:00 • committed by Alex Deucher

parent 88807dc8d5

commit d8e408a827

6 changed files with 20 additions and 3 deletions

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7

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c

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1

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h

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7

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c

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6

drivers/gpu/drm/amd/amdkfd/kfd_chardev.c

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1

drivers/gpu/drm/amd/include/kgd_kfd_interface.h

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1

include/uapi/linux/kfd_ioctl.h

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