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| author | Dave Airlie <airlied@redhat.com> | 2016-01-30 07:59:32 +0200 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-02-15 15:45:31 -0500 |
| commit | 2322974c5d55e8be4be4b7cbf8cf996daf72b0bd (patch) | |
| tree | bdbf55b4519a2079acdc5c0194b73e0fc2a21edf /include | |
| parent | b99c635faf56fa3cbd1cf61632418b06543dc145 (diff) | |
| download | lwn-2322974c5d55e8be4be4b7cbf8cf996daf72b0bd.tar.gz lwn-2322974c5d55e8be4be4b7cbf8cf996daf72b0bd.zip | |
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.h | 9 |
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 |