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authorDave Airlie <airlied@redhat.com>2016-01-30 07:59:32 +0200
committerSasha Levin <sasha.levin@oracle.com>2016-02-15 15:45:31 -0500
commit2322974c5d55e8be4be4b7cbf8cf996daf72b0bd (patch)
treebdbf55b4519a2079acdc5c0194b73e0fc2a21edf /include
parentb99c635faf56fa3cbd1cf61632418b06543dc145 (diff)
drm: add helper to check for wc memory support
[ Upstream commit 4b0e4e4af6c6dc8354dcb72182d52c1bc55f12fc ] Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'include')
-rw-r--r--include/drm/drm_cache.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/drm/drm_cache.h b/include/drm/drm_cache.h
index 7bfb063029d8..461a0558bca4 100644
--- a/include/drm/drm_cache.h
+++ b/include/drm/drm_cache.h
@@ -35,4 +35,13 @@
void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
+static inline bool drm_arch_can_wc_memory(void)
+{
+#if defined(CONFIG_PPC) && !defined(CONFIG_NOT_COHERENT_CACHE)
+ return false;
+#else
+ return true;
+#endif
+}
+
#endif