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authorDave Airlie <airlied@redhat.com>2016-01-30 08:59:32 +0300
committerAlex Deucher <alexander.deucher@amd.com>2016-02-02 18:08:43 +0300
commit4b0e4e4af6c6dc8354dcb72182d52c1bc55f12fc (patch)
treef1e33a4be5b556791e9d26aa44194bf5ba8df091 /include
parentad32152eb26043d165eed9406cb9e2f7011f6b10 (diff)
downloadlinux-4b0e4e4af6c6dc8354dcb72182d52c1bc55f12fc.tar.xz
drm: add helper to check for wc memory support
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
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