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Commit e74adf20 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/amdgpu: add check for atombios GPU virtualization table 



This table is found on boards that support SR-IOV.  This will
be used to determine if the board supports SR-IOV and allow
the driver to take specific action in certain cases.

Reviewed-by: default avatarMonk Liu <monk.liu@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 383b6f60

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

+13 −0
Original line number Diff line number Diff line
@@ -1514,6 +1514,19 @@ int amdgpu_atombios_init_mc_reg_table(struct amdgpu_device *adev, 
	return -EINVAL;

}



bool amdgpu_atombios_has_gpu_virtualization_table(struct amdgpu_device *adev)

{

	int index = GetIndexIntoMasterTable(DATA, GPUVirtualizationInfo);

	u8 frev, crev;

	u16 data_offset, size;



	if (amdgpu_atom_parse_data_header(adev->mode_info.atom_context, index, &size,

					  &frev, &crev, &data_offset))

		return true;



	return false;

}



void amdgpu_atombios_scratch_regs_lock(struct amdgpu_device *adev, bool lock)

{

	uint32_t bios_6_scratch;

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

+2 −0
Original line number Diff line number Diff line
@@ -196,6 +196,8 @@ int amdgpu_atombios_init_mc_reg_table(struct amdgpu_device *adev, 
				      u8 module_index,

				      struct atom_mc_reg_table *reg_table);



bool amdgpu_atombios_has_gpu_virtualization_table(struct amdgpu_device *adev);



void amdgpu_atombios_scratch_regs_lock(struct amdgpu_device *adev, bool lock);

void amdgpu_atombios_scratch_regs_init(struct amdgpu_device *adev);

void amdgpu_atombios_scratch_regs_save(struct amdgpu_device *adev);