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drm/ttm/radeon: add dma32 support.

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This add support for using dma32 memory on gpus that really need it.

Currently IGPs are left without DMA32 but we might need to change
that unless we can fix rs690.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2009-07-10 22:36:26 +10:00
committed by Dave Airlie
parent 61b576dbbe
commit ad49f50186
6 changed files with 36 additions and 8 deletions
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11
drivers/gpu/drm/ttm/ttm_tt.c
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@@ -131,10 +131,15 @@ static void ttm_tt_free_page_directory(struct ttm_tt *ttm)
static struct page *ttm_tt_alloc_page(unsigned page_flags)
{
if (page_flags & TTM_PAGE_FLAG_ZERO_ALLOC)
return alloc_page(GFP_HIGHUSER | __GFP_ZERO);
gfp_t gfp_flags = GFP_HIGHUSER;
return alloc_page(GFP_HIGHUSER);
if (page_flags & TTM_PAGE_FLAG_ZERO_ALLOC)
gfp_flags |= __GFP_ZERO;
if (page_flags & TTM_PAGE_FLAG_DMA32)
gfp_flags |= __GFP_DMA32;
return alloc_page(gfp_flags);
}
static void ttm_tt_free_user_pages(struct ttm_tt *ttm)