x86 gart: replace to_pages macro with iommu_num_pages

This patch removes the to_pages macro from x86 GART 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>

1 files changed, 4 insertions, 7 deletions

diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index df5f142657d2..c98240431561 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -67,9 +67,6 @@ static u32 gart_unmapped_entry;
         (((x) & 0xfffff000) | (((x) >> 32) << 4) | GPTE_VALID | GPTE_COHERENT)
 #define GPTE_DECODE(x) (((x) & 0xfffff000) | (((u64)(x) & 0xff0) << 28))
 
-#define to_pages(addr, size) \
-        (round_up(((addr) & ~PAGE_MASK) + (size), PAGE_SIZE) >> PAGE_SHIFT)
-
 #define EMERGENCY_PAGES 32 /* = 128KB */
 
 #ifdef CONFIG_AGP
@@ -241,7 +238,7 @@ nonforced_iommu(struct device *dev, unsigned long addr, size_t size)
 static dma_addr_t dma_map_area(struct device *dev, dma_addr_t phys_mem,
                                 size_t size, int dir)
 {
-        unsigned long npages = to_pages(phys_mem, size);
+        unsigned long npages = iommu_num_pages(phys_mem, size);
         unsigned long iommu_page = alloc_iommu(dev, npages);
         int i;
 
@@ -304,7 +301,7 @@ static void gart_unmap_single(struct device *dev, dma_addr_t dma_addr,
                 return;
 
         iommu_page = (dma_addr - iommu_bus_base)>>PAGE_SHIFT;
-        npages = to_pages(dma_addr, size);
+        npages = iommu_num_pages(dma_addr, size);
         for (i = 0; i < npages; i++) {
                 iommu_gatt_base[iommu_page + i] = gart_unmapped_entry;
                 CLEAR_LEAK(iommu_page + i);
@@ -387,7 +384,7 @@ static int __dma_map_cont(struct device *dev, struct scatterlist *start,
                 }
 
                 addr = phys_addr;
-                pages = to_pages(s->offset, s->length);
+                pages = iommu_num_pages(s->offset, s->length);
                 while (pages--) {
                         iommu_gatt_base[iommu_page] = GPTE_ENCODE(addr);
                         SET_LEAK(iommu_page);
@@ -470,7 +467,7 @@ gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, int dir)
 
                 seg_size += s->length;
                 need = nextneed;
-                pages += to_pages(s->offset, s->length);
+                pages += iommu_num_pages(s->offset, s->length);
                 ps = s;
         }
         if (dma_map_cont(dev, start_sg, i - start, sgmap, pages, need) < 0)