drm/radeon/kms: add info query for backend map
The 3D driver need to get the pipe to backend
map to certain things. Add a query to get the
info.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
index 6f80a21..be2c122 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -237,6 +237,19 @@
case RADEON_INFO_FUSION_GART_WORKING:
value = 1;
break;
+ case RADEON_INFO_BACKEND_MAP:
+ if (rdev->family >= CHIP_CAYMAN)
+ value = rdev->config.cayman.backend_map;
+ else if (rdev->family >= CHIP_CEDAR)
+ value = rdev->config.evergreen.backend_map;
+ else if (rdev->family >= CHIP_RV770)
+ value = rdev->config.rv770.backend_map;
+ else if (rdev->family >= CHIP_R600)
+ value = rdev->config.r600.backend_map;
+ else {
+ return -EINVAL;
+ }
+ break;
default:
DRM_DEBUG_KMS("Invalid request %d\n", info->request);
return -EINVAL;