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intel-iommu: Change aligned_size() to aligned_nrpages() 

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
David Woodhouse 2009-06-28 15:03:06 +01:00
parent b536d24d21
commit 88cb6a7424
1 changed files with 12 additions and 9 deletions
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21
drivers/pci/intel-iommu.c
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@ -2320,11 +2320,13 @@ error:
return ret;
}
static inline u64 aligned_size(u64 host_addr, size_t size)
static inline unsigned long aligned_nrpages(unsigned long host_addr,
size_t size)
{
u64 addr;
addr = (host_addr & (~PAGE_MASK)) + size;
return PAGE_ALIGN(addr);
host_addr &= ~PAGE_MASK;
host_addr += size + PAGE_SIZE - 1;
return host_addr >> VTD_PAGE_SHIFT;
}
struct iova *
@ -2466,7 +2468,7 @@ static dma_addr_t __intel_map_single(struct device *hwdev, phys_addr_t paddr,
return 0;
iommu = domain_get_iommu(domain);
size = aligned_size(paddr, size) >> VTD_PAGE_SHIFT;
size = aligned_nrpages(paddr, size);
iova = __intel_alloc_iova(hwdev, domain, size << VTD_PAGE_SHIFT, pdev->dma_mask);
if (!iova)
@ -2757,9 +2759,10 @@ static int intel_map_sg(struct device *hwdev, struct scatterlist *sglist, int ne
iommu = domain_get_iommu(domain);
for_each_sg(sglist, sg, nelems, i)
size += aligned_size(sg->offset, sg->length);
size += aligned_nrpages(sg->offset, sg->length);
iova = __intel_alloc_iova(hwdev, domain, size, pdev->dma_mask);
iova = __intel_alloc_iova(hwdev, domain, size << VTD_PAGE_SHIFT,
pdev->dma_mask);
if (!iova) {
sglist->dma_length = 0;
return 0;
@ -2778,7 +2781,7 @@ static int intel_map_sg(struct device *hwdev, struct scatterlist *sglist, int ne
start_vpfn = mm_to_dma_pfn(iova->pfn_lo);
offset_pfn = 0;
for_each_sg(sglist, sg, nelems, i) {
int nr_pages = aligned_size(sg->offset, sg->length) >> VTD_PAGE_SHIFT;
int nr_pages = aligned_nrpages(sg->offset, sg->length);
ret = domain_pfn_mapping(domain, start_vpfn + offset_pfn,
page_to_dma_pfn(sg_page(sg)),
nr_pages, prot);
@ -3502,7 +3505,7 @@ static int intel_iommu_map_range(struct iommu_domain *domain,
}
/* Round up size to next multiple of PAGE_SIZE, if it and
the low bits of hpa would take us onto the next page */
size = aligned_size(hpa, size) >> VTD_PAGE_SHIFT;
size = aligned_nrpages(hpa, size);
ret = domain_pfn_mapping(dmar_domain, iova >> VTD_PAGE_SHIFT,
hpa >> VTD_PAGE_SHIFT, size, prot);
return ret;