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path: root/drivers/gpu/drm/ttm/ttm_tt.c
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Diffstat (limited to 'drivers/gpu/drm/ttm/ttm_tt.c')
-rw-r--r--drivers/gpu/drm/ttm/ttm_tt.c25
1 files changed, 19 insertions, 6 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
index 75dc8bd..b8b6c4a 100644
--- a/drivers/gpu/drm/ttm/ttm_tt.c
+++ b/drivers/gpu/drm/ttm/ttm_tt.c
@@ -86,10 +86,16 @@ void ttm_tt_cache_flush(struct page *pages[], unsigned long num_pages)
unsigned long i;
for (i = 0; i < num_pages; ++i) {
- if (pages[i]) {
- unsigned long start = (unsigned long)page_address(pages[i]);
- flush_dcache_range(start, start + PAGE_SIZE);
- }
+ struct page *page = pages[i];
+ void *page_virtual;
+
+ if (unlikely(page == NULL))
+ continue;
+
+ page_virtual = kmap_atomic(page, KM_USER0);
+ flush_dcache_range((unsigned long) page_virtual,
+ (unsigned long) page_virtual + PAGE_SIZE);
+ kunmap_atomic(page_virtual, KM_USER0);
}
#else
if (on_each_cpu(ttm_tt_ipi_handler, NULL, 1) != 0)
@@ -131,10 +137,17 @@ static void ttm_tt_free_page_directory(struct ttm_tt *ttm)
static struct page *ttm_tt_alloc_page(unsigned page_flags)
{
+ gfp_t gfp_flags = GFP_USER;
+
if (page_flags & TTM_PAGE_FLAG_ZERO_ALLOC)
- return alloc_page(GFP_HIGHUSER | __GFP_ZERO);
+ gfp_flags |= __GFP_ZERO;
+
+ if (page_flags & TTM_PAGE_FLAG_DMA32)
+ gfp_flags |= __GFP_DMA32;
+ else
+ gfp_flags |= __GFP_HIGHMEM;
- return alloc_page(GFP_HIGHUSER);
+ return alloc_page(gfp_flags);
}
static void ttm_tt_free_user_pages(struct ttm_tt *ttm)
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