drm/radeon: add new INFO ioctl requests
Add requests to get the number of shader engines (SE) and
the number of SH per SE. These are needed for geometry
and tesselation shaders in the 3D driver as well as setting
up PA_SC_RASTER_CONFIG on SI asics.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
index dc781c4..9c312f9 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -361,6 +361,22 @@
return -EINVAL;
}
break;
+ case RADEON_INFO_MAX_SE:
+ if (rdev->family >= CHIP_TAHITI)
+ value = rdev->config.si.max_shader_engines;
+ else if (rdev->family >= CHIP_CAYMAN)
+ value = rdev->config.cayman.max_shader_engines;
+ else if (rdev->family >= CHIP_CEDAR)
+ value = rdev->config.evergreen.num_ses;
+ else
+ value = 1;
+ break;
+ case RADEON_INFO_MAX_SH_PER_SE:
+ if (rdev->family >= CHIP_TAHITI)
+ value = rdev->config.si.max_sh_per_se;
+ else
+ return -EINVAL;
+ break;
default:
DRM_DEBUG_KMS("Invalid request %d\n", info->request);
return -EINVAL;