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drm/ttm: Add ttm_set_pages_wc and ttm_set_pages_uc helper

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These two helpers will be used on set page caching.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Huang Rui 2018-08-01 13:49:32 +08:00 committed by Alex Deucher
parent fe710322b8
commit dceb219fc6
1 changed files with 22 additions and 0 deletions
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22
include/drm/ttm/ttm_set_memory.h
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@ -57,6 +57,18 @@ static inline int ttm_set_pages_wb(struct page *page, int numpages)
return set_pages_wb(page, 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 */ #else /* for CONFIG_X86 */
#if IS_ENABLED(CONFIG_AGP) #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 */ #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 /* for CONFIG_X86 */
#endif #endif