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x86: convert gart to use is_buffer_dma_capable helper function

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Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
FUJITA Tomonori 2008-09-10 01:06:47 +09:00 committed by Ingo Molnar
parent 636dc67cbf
commit ac4ff656c0
1 changed files with 3 additions and 13 deletions
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16
arch/x86/kernel/pci-gart_64.c
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@ -214,24 +214,14 @@ static void iommu_full(struct device *dev, size_t size, int dir)
static inline int
need_iommu(struct device *dev, unsigned long addr, size_t size)
{
u64 mask = *dev->dma_mask;
int high = addr + size > mask;
int mmu = high;
if (force_iommu)
mmu = 1;
return mmu;
return force_iommu ||
!is_buffer_dma_capable(*dev->dma_mask, addr, size);
}
static inline int
nonforced_iommu(struct device *dev, unsigned long addr, size_t size)
{
u64 mask = *dev->dma_mask;
int high = addr + size > mask;
int mmu = high;
return mmu;
return !is_buffer_dma_capable(*dev->dma_mask, addr, size);
}
/* Map a single continuous physical area into the IOMMU.