From dceb219fc60766006bfe8e53afa62816b94fcb11 Mon Sep 17 00:00:00 2001 From: Huang Rui Date: Wed, 1 Aug 2018 13:49:32 +0800 Subject: [PATCH] drm/ttm: Add ttm_set_pages_wc and ttm_set_pages_uc helper MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit These two helpers will be used on set page caching. Reviewed-by: Christian König Signed-off-by: Huang Rui Signed-off-by: Alex Deucher --- include/drm/ttm/ttm_set_memory.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/include/drm/ttm/ttm_set_memory.h b/include/drm/ttm/ttm_set_memory.h index a70723cf208b..7c492b49e38c 100644 --- a/include/drm/ttm/ttm_set_memory.h +++ b/include/drm/ttm/ttm_set_memory.h @@ -57,6 +57,18 @@ static inline int ttm_set_pages_wb(struct page *page, int numpages) return set_pages_wb(page, numpages); } +static inline int ttm_set_pages_wc(struct page *page, int numpages) +{ + unsigned long addr = (unsigned long)page_address(page); + + return set_memory_wc(addr, numpages); +} + +static inline int ttm_set_pages_uc(struct page *page, int numpages) +{ + return set_pages_uc(page, numpages); +} + #else /* for CONFIG_X86 */ #if IS_ENABLED(CONFIG_AGP) @@ -123,6 +135,16 @@ static inline int ttm_set_pages_wb(struct page *page, int numpages) #endif /* for CONFIG_AGP */ +static inline int ttm_set_pages_wc(struct page *page, int numpages) +{ + return 0; +} + +static inline int ttm_set_pages_uc(struct page *page, int numpages) +{ + return 0; +} + #endif /* for CONFIG_X86 */ #endif