X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fparisc%2Fiommu-helpers.h;h=a9c46cc2db3701157485b8194af83a6c03c7b189;hb=22deb791f303a26c7181e640b2aab2a4536626c5;hp=38d9e1aba1d0f534e60a1dc6c4dca4ba1e67f056;hpb=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/parisc/iommu-helpers.h b/drivers/parisc/iommu-helpers.h
index 38d9e1aba1d..a9c46cc2db3 100644
--- a/drivers/parisc/iommu-helpers.h
+++ b/drivers/parisc/iommu-helpers.h
@@ -95,12 +95,14 @@ iommu_fill_pdir(struct ioc *ioc, struct scatterlist *startsg, int nents,
 */
 
 static inline unsigned int
-iommu_coalesce_chunks(struct ioc *ioc, struct scatterlist *startsg, int nents,
-		      int (*iommu_alloc_range)(struct ioc *, size_t))
+iommu_coalesce_chunks(struct ioc *ioc, struct device *dev,
+		struct scatterlist *startsg, int nents,
+		int (*iommu_alloc_range)(struct ioc *, struct device *, size_t))
 {
 	struct scatterlist *contig_sg;	   /* contig chunk head */
 	unsigned long dma_offset, dma_len; /* start/len of DMA stream */
 	unsigned int n_mappings = 0;
+	unsigned int max_seg_size = dma_get_max_seg_size(dev);
 
 	while (nents > 0) {
 
@@ -138,10 +140,13 @@ iommu_coalesce_chunks(struct ioc *ioc, struct scatterlist *startsg, int nents,
 			** exceed DMA_CHUNK_SIZE if we coalesce the
 			** next entry.
 			*/   
-			if(unlikely(ROUNDUP(dma_len + dma_offset + startsg->length,
+			if(unlikely(ALIGN(dma_len + dma_offset + startsg->length,
 					    IOVP_SIZE) > DMA_CHUNK_SIZE))
 				break;
 
+			if (startsg->length + dma_len > max_seg_size)
+				break;
+
 			/*
 			** Next see if we can append the next chunk (i.e.
 			** it must end on one page and begin on another
@@ -158,10 +163,10 @@ iommu_coalesce_chunks(struct ioc *ioc, struct scatterlist *startsg, int nents,
 		** Allocate space for DMA stream.
 		*/
 		sg_dma_len(contig_sg) = dma_len;
-		dma_len = ROUNDUP(dma_len + dma_offset, IOVP_SIZE);
+		dma_len = ALIGN(dma_len + dma_offset, IOVP_SIZE);
 		sg_dma_address(contig_sg) =
 			PIDE_FLAG 
-			| (iommu_alloc_range(ioc, dma_len) << IOVP_SHIFT)
+			| (iommu_alloc_range(ioc, dev, dma_len) << IOVP_SHIFT)
 			| dma_offset;
 		n_mappings++;
 	}