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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2008-09-29 00:06:36 +0900
committerIngo Molnar <mingo@elte.hu>2008-10-02 11:33:41 +0200
commit40becd8d5af03ee7935e79c3fccd0d1f380d95b4 (patch)
tree780b673196fc45251e3eb9888cb6271feebbc15a /arch
parent24268245d8ba9270152b2281666099ddc8ca389d (diff)
downloadop-kernel-dev-40becd8d5af03ee7935e79c3fccd0d1f380d95b4.zip
op-kernel-dev-40becd8d5af03ee7935e79c3fccd0d1f380d95b4.tar.gz
AMD IOMMU: use iommu_device_max_index
AMD IOMMU can use iommu_device_max_index() instead of the homegrown function. 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>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/amd_iommu.c10
1 files changed, 3 insertions, 7 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index c192121..3b346c6 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -470,10 +470,6 @@ static int init_unity_mappings_for_device(struct dma_ops_domain *dma_dom,
* efficient allocator.
*
****************************************************************************/
-static unsigned long dma_mask_to_pages(unsigned long mask)
-{
- return PAGE_ALIGN(mask) >> PAGE_SHIFT;
-}
/*
* The address allocator core function.
@@ -486,14 +482,14 @@ static unsigned long dma_ops_alloc_addresses(struct device *dev,
unsigned long align_mask,
u64 dma_mask)
{
- unsigned long limit = dma_mask_to_pages(dma_mask);
+ unsigned long limit;
unsigned long address;
- unsigned long size = dom->aperture_size >> PAGE_SHIFT;
unsigned long boundary_size;
boundary_size = ALIGN(dma_get_seg_boundary(dev) + 1,
PAGE_SIZE) >> PAGE_SHIFT;
- limit = limit < size ? limit : size;
+ limit = iommu_device_max_index(dom->aperture_size >> PAGE_SHIFT, 0,
+ dma_mask >> PAGE_SHIFT);
if (dom->next_bit >= limit) {
dom->next_bit = 0;
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