x86, AMD IOMMU: replace to_pages macro with iommu_num_pages

This patch removes the to_pages macro from AMD IOMMU code and calls the generic
iommu_num_pages function instead.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Cc: iommu@lists.linux-foundation.org
Cc: bhavna.sarathy@amd.com
Cc: robert.richter@amd.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index c25210e6ac888e94224b460e6eb82f3c556d7616..79eff735fde647d2a321cce2c470e7c7b7fe0314 100644 (file)
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -29,9 +29,6 @@
 
 #define CMD_SET_TYPE(cmd, t) ((cmd)->data[1] |= ((t) << 28))
 
-#define to_pages(addr, size) \
-        (round_up(((addr) & ~PAGE_MASK) + (size), PAGE_SIZE) >> PAGE_SHIFT)
-
 #define EXIT_LOOP_COUNT 10000000
 
 static DEFINE_RWLOCK(amd_iommu_devtable_lock);
@@ -185,7 +182,7 @@ static int iommu_flush_pages(struct amd_iommu *iommu, u16 domid,
                u64 address, size_t size)
 {
        int s = 0;
-       unsigned pages = to_pages(address, size);
+       unsigned pages = iommu_num_pages(address, size);
 
        address &= PAGE_MASK;
 
@@ -557,8 +554,8 @@ static struct dma_ops_domain *dma_ops_domain_alloc(struct amd_iommu *iommu,
        if (iommu->exclusion_start &&
            iommu->exclusion_start < dma_dom->aperture_size) {
                unsigned long startpage = iommu->exclusion_start >> PAGE_SHIFT;
-               int pages = to_pages(iommu->exclusion_start,
-                               iommu->exclusion_length);
+               int pages = iommu_num_pages(iommu->exclusion_start,
+                                           iommu->exclusion_length);
                dma_ops_reserve_addresses(dma_dom, startpage, pages);
        }
 
@@ -767,7 +764,7 @@ static dma_addr_t __map_single(struct device *dev,
        unsigned int pages;
        int i;
 
-       pages = to_pages(paddr, size);
+       pages = iommu_num_pages(paddr, size);
        paddr &= PAGE_MASK;
 
        address = dma_ops_alloc_addresses(dev, dma_dom, pages);
@@ -802,7 +799,7 @@ static void __unmap_single(struct amd_iommu *iommu,
        if ((dma_addr == 0) || (dma_addr + size > dma_dom->aperture_size))
                return;
 
-       pages = to_pages(dma_addr, size);
+       pages = iommu_num_pages(dma_addr, size);
        dma_addr &= PAGE_MASK;
        start = dma_addr;