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Subject[PATCH 07/10] x86: convert Calgary IOMMU driver to generic iommu_num_pages function
Date
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
arch/x86/kernel/pci-calgary_64.c | 18 ++++--------------
1 files changed, 4 insertions(+), 14 deletions(-)
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
index b67a4b1..1fbba8a 100644
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -217,16 +217,6 @@ static inline unsigned long verify_bit_range(unsigned long* bitmap,

#endif /* CONFIG_IOMMU_DEBUG */

-static inline unsigned int num_dma_pages(unsigned long dma, unsigned int dmalen)
-{
- unsigned int npages;
-
- npages = PAGE_ALIGN(dma + dmalen) - (dma & PAGE_MASK);
- npages >>= PAGE_SHIFT;
-
- return npages;
-}
-
static inline int translation_enabled(struct iommu_table *tbl)
{
/* only PHBs with translation enabled have an IOMMU table */
@@ -409,7 +399,7 @@ static void calgary_unmap_sg(struct device *dev,
if (dmalen == 0)
break;

- npages = num_dma_pages(dma, dmalen);
+ npages = iommu_num_pages(dma, dmalen, PAGE_SIZE);
iommu_free(tbl, dma, npages);
}
}
@@ -428,7 +418,7 @@ static int calgary_map_sg(struct device *dev, struct scatterlist *sg,
BUG_ON(!sg_page(s));

vaddr = (unsigned long) sg_virt(s);
- npages = num_dma_pages(vaddr, s->length);
+ npages = iommu_num_pages(vaddr, s->length, PAGE_SIZE);

entry = iommu_range_alloc(dev, tbl, npages);
if (entry == bad_dma_address) {
@@ -465,7 +455,7 @@ static dma_addr_t calgary_map_single(struct device *dev, phys_addr_t paddr,
struct iommu_table *tbl = find_iommu_table(dev);

uaddr = (unsigned long)vaddr;
- npages = num_dma_pages(uaddr, size);
+ npages = iommu_num_pages(uaddr, size, PAGE_SIZE);

return iommu_alloc(dev, tbl, vaddr, npages, direction);
}
@@ -476,7 +466,7 @@ static void calgary_unmap_single(struct device *dev, dma_addr_t dma_handle,
struct iommu_table *tbl = find_iommu_table(dev);
unsigned int npages;

- npages = num_dma_pages(dma_handle, size);
+ npages = iommu_num_pages(dma_handle, size, PAGE_SIZE);
iommu_free(tbl, dma_handle, npages);
}

--
1.5.3.7



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