sparc64: use iommu_num_pages function in IOMMU code
Joerg Roedel [Thu, 16 Oct 2008 05:02:14 +0000 (22:02 -0700)]
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/sparc64/kernel/iommu.c
arch/sparc64/kernel/iommu_common.h
arch/sparc64/kernel/pci_sun4v.c

index f73b238..1cc1995 100644 (file)
@@ -575,7 +575,7 @@ static int dma_4u_map_sg(struct device *dev, struct scatterlist *sglist,
                }
                /* Allocate iommu entries for that segment */
                paddr = (unsigned long) SG_ENT_PHYS_ADDRESS(s);
-               npages = iommu_nr_pages(paddr, slen);
+               npages = iommu_num_pages(paddr, slen, IO_PAGE_SIZE);
                entry = iommu_range_alloc(dev, iommu, npages, &handle);
 
                /* Handle failure */
@@ -647,7 +647,8 @@ iommu_map_failed:
                        iopte_t *base;
 
                        vaddr = s->dma_address & IO_PAGE_MASK;
-                       npages = iommu_nr_pages(s->dma_address, s->dma_length);
+                       npages = iommu_num_pages(s->dma_address, s->dma_length,
+                                                IO_PAGE_SIZE);
                        iommu_range_free(iommu, vaddr, npages);
 
                        entry = (vaddr - iommu->page_table_map_base)
@@ -715,7 +716,7 @@ static void dma_4u_unmap_sg(struct device *dev, struct scatterlist *sglist,
 
                if (!len)
                        break;
-               npages = iommu_nr_pages(dma_handle, len);
+               npages = iommu_num_pages(dma_handle, len, IO_PAGE_SIZE);
                iommu_range_free(iommu, dma_handle, npages);
 
                entry = ((dma_handle - iommu->page_table_map_base)
index 202d8ae..591f587 100644 (file)
 
 #define SG_ENT_PHYS_ADDRESS(SG)        (__pa(sg_virt((SG))))
 
-static inline unsigned long iommu_nr_pages(unsigned long vaddr,
-                                           unsigned long slen)
-{
-       unsigned long npages;
-
-       npages = IO_PAGE_ALIGN(vaddr + slen) - (vaddr & IO_PAGE_MASK);
-       npages >>= IO_PAGE_SHIFT;
-
-       return npages;
-}
-
 static inline int is_span_boundary(unsigned long entry,
                                   unsigned long shift,
                                   unsigned long boundary_size,
@@ -53,7 +42,8 @@ static inline int is_span_boundary(unsigned long entry,
                                   struct scatterlist *sg)
 {
        unsigned long paddr = SG_ENT_PHYS_ADDRESS(outs);
-       int nr = iommu_nr_pages(paddr, outs->dma_length + sg->length);
+       int nr = iommu_num_pages(paddr, outs->dma_length + sg->length,
+                                IO_PAGE_SIZE);
 
        return iommu_is_span_boundary(entry, nr, shift, boundary_size);
 }
index e244954..34a1fde 100644 (file)
@@ -384,7 +384,7 @@ static int dma_4v_map_sg(struct device *dev, struct scatterlist *sglist,
                }
                /* Allocate iommu entries for that segment */
                paddr = (unsigned long) SG_ENT_PHYS_ADDRESS(s);
-               npages = iommu_nr_pages(paddr, slen);
+               npages = iommu_num_pages(paddr, slen, IO_PAGE_SIZE);
                entry = iommu_range_alloc(dev, iommu, npages, &handle);
 
                /* Handle failure */
@@ -461,7 +461,8 @@ iommu_map_failed:
                        unsigned long vaddr, npages;
 
                        vaddr = s->dma_address & IO_PAGE_MASK;
-                       npages = iommu_nr_pages(s->dma_address, s->dma_length);
+                       npages = iommu_num_pages(s->dma_address, s->dma_length,
+                                                IO_PAGE_SIZE);
                        iommu_range_free(iommu, vaddr, npages);
                        /* XXX demap? XXX */
                        s->dma_address = DMA_ERROR_CODE;
@@ -500,7 +501,7 @@ static void dma_4v_unmap_sg(struct device *dev, struct scatterlist *sglist,
 
                if (!len)
                        break;
-               npages = iommu_nr_pages(dma_handle, len);
+               npages = iommu_num_pages(dma_handle, len, IO_PAGE_SIZE);
                iommu_range_free(iommu, dma_handle, npages);
 
                entry = ((dma_handle - iommu->page_table_map_base) >> IO_PAGE_SHIFT);