From eb117d3e519f99567ddd2c86386a6e64c6e471cd Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Wed, 15 Oct 2008 22:02:13 -0700 Subject: alpha: use iommu_num_pages function in IOMMU code Signed-off-by: Joerg Roedel Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: FUJITA Tomonori Cc: Muli Ben-Yehuda Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/alpha/kernel/pci_iommu.c | 17 +++++------------ 1 file changed, 5 insertions(+), 12 deletions(-) (limited to 'arch/alpha') diff --git a/arch/alpha/kernel/pci_iommu.c b/arch/alpha/kernel/pci_iommu.c index 2179c602032a..b9094da05d7a 100644 --- a/arch/alpha/kernel/pci_iommu.c +++ b/arch/alpha/kernel/pci_iommu.c @@ -41,13 +41,6 @@ mk_iommu_pte(unsigned long paddr) return (paddr >> (PAGE_SHIFT-1)) | 1; } -static inline long -calc_npages(long bytes) -{ - return (bytes + PAGE_SIZE - 1) >> PAGE_SHIFT; -} - - /* Return the minimum of MAX or the first power of two larger than main memory. */ @@ -287,7 +280,7 @@ pci_map_single_1(struct pci_dev *pdev, void *cpu_addr, size_t size, if (!arena || arena->dma_base + arena->size - 1 > max_dma) arena = hose->sg_isa; - npages = calc_npages((paddr & ~PAGE_MASK) + size); + npages = iommu_num_pages(paddr, size, PAGE_SIZE); /* Force allocation to 64KB boundary for ISA bridges. */ if (pdev && pdev == isa_bridge) @@ -387,7 +380,7 @@ pci_unmap_single(struct pci_dev *pdev, dma_addr_t dma_addr, size_t size, BUG(); } - npages = calc_npages((dma_addr & ~PAGE_MASK) + size); + npages = iommu_num_pages(dma_addr, size, PAGE_SIZE); spin_lock_irqsave(&arena->lock, flags); @@ -580,7 +573,7 @@ sg_fill(struct device *dev, struct scatterlist *leader, struct scatterlist *end, contiguous. */ paddr &= ~PAGE_MASK; - npages = calc_npages(paddr + size); + npages = iommu_num_pages(paddr, size, PAGE_SIZE); dma_ofs = iommu_arena_alloc(dev, arena, npages, 0); if (dma_ofs < 0) { /* If we attempted a direct map above but failed, die. */ @@ -616,7 +609,7 @@ sg_fill(struct device *dev, struct scatterlist *leader, struct scatterlist *end, sg++; } - npages = calc_npages((paddr & ~PAGE_MASK) + size); + npages = iommu_num_pages(paddr, size, PAGE_SIZE); paddr &= PAGE_MASK; for (i = 0; i < npages; ++i, paddr += PAGE_SIZE) @@ -775,7 +768,7 @@ pci_unmap_sg(struct pci_dev *pdev, struct scatterlist *sg, int nents, DBGA(" (%ld) sg [%lx,%lx]\n", sg - end + nents, addr, size); - npages = calc_npages((addr & ~PAGE_MASK) + size); + npages = iommu_num_pages(addr, size, PAGE_SIZE); ofs = (addr - arena->dma_base) >> PAGE_SHIFT; iommu_arena_free(arena, ofs, npages); -- cgit v1.2.2