Merge branch 'core/generic-dma-coherent' of git://git.kernel.org/pub/scm/linux/kernel...

[mv-sheeva.git] / arch / x86 / kernel / amd_iommu.c

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index c25210e6ac888e94224b460e6eb82f3c556d7616..22d7d050905dd1f6b6192707b2697e38a2fd38bd 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);
        }
 
@@ -667,7 +664,7 @@ static int get_device_resources(struct device *dev,
        _bdf = calc_devid(pcidev->bus->number, pcidev->devfn);
 
        /* device not translated by any IOMMU in the system? */
-       if (_bdf >= amd_iommu_last_bdf) {
+       if (_bdf > amd_iommu_last_bdf) {
                *iommu = NULL;
                *domain = NULL;
                *bdf = 0xffff;
@@ -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;
 
@@ -1085,7 +1082,7 @@ void prealloc_protection_domains(void)
 
        while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
                devid = (dev->bus->number << 8) | dev->devfn;
-               if (devid >= amd_iommu_last_bdf)
+               if (devid > amd_iommu_last_bdf)
                        continue;
                devid = amd_iommu_alias_table[devid];
                if (domain_for_device(devid))