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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: Monk Liu <monk.liu@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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2 changed files with 15 additions and 0 deletions
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@ -1514,6 +1514,19 @@ int amdgpu_atombios_init_mc_reg_table(struct amdgpu_device *adev,
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return -EINVAL;
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}
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bool amdgpu_atombios_has_gpu_virtualization_table(struct amdgpu_device *adev)
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{
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int index = GetIndexIntoMasterTable(DATA, GPUVirtualizationInfo);
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u8 frev, crev;
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u16 data_offset, size;
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if (amdgpu_atom_parse_data_header(adev->mode_info.atom_context, index, &size,
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&frev, &crev, &data_offset))
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return true;
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return false;
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}
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void amdgpu_atombios_scratch_regs_lock(struct amdgpu_device *adev, bool lock)
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{
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uint32_t bios_6_scratch;
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@ -196,6 +196,8 @@ int amdgpu_atombios_init_mc_reg_table(struct amdgpu_device *adev,
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u8 module_index,
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struct atom_mc_reg_table *reg_table);
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bool amdgpu_atombios_has_gpu_virtualization_table(struct amdgpu_device *adev);
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void amdgpu_atombios_scratch_regs_lock(struct amdgpu_device *adev, bool lock);
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void amdgpu_atombios_scratch_regs_init(struct amdgpu_device *adev);
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void amdgpu_atombios_scratch_regs_save(struct amdgpu_device *adev);
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