drm/panfrost: Add "clean only safe" feature bit

Add the HW_FEATURE_CLEAN_ONLY_SAFE bit based on kbase. When I actually
tried to port the logic from kbase, trivial jobs raised Data Invalid
Faults, so this may depend on other coherency details. It's still useful
to have the bit to record the feature bit when adding new models.

Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220525145754.25866-7-alyssa.rosenzweig@collabora.com

diff --git a/drivers/gpu/drm/panfrost/panfrost_features.h b/drivers/gpu/drm/panfrost/panfrost_features.h
index 36fadcf9634e93722b540ac9a798f4aa804fa67b..1a8bdebc86a3e4ef3ddd353f9c0d099d7426fd72 100644 (file)
--- a/drivers/gpu/drm/panfrost/panfrost_features.h
+++ b/drivers/gpu/drm/panfrost/panfrost_features.h
@@ -21,6 +21,7 @@ enum panfrost_hw_feature {
        HW_FEATURE_TLS_HASHING,
        HW_FEATURE_THREAD_GROUP_SPLIT,
        HW_FEATURE_IDVS_GROUP_SIZE,
+       HW_FEATURE_CLEAN_ONLY_SAFE,
        HW_FEATURE_3BIT_EXT_RW_L2_MMU_CONFIG,
 };