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>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
index 9416e0f..84b0ce3 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
@@ -1514,6 +1514,19 @@
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;