dma/ia64: update ia64 machvecs, swiotlb.c

Change all ia64 machvecs to use the new dma_*map*_attrs() interfaces.
Implement the old dma_*map_*() interfaces in terms of the corresponding new
interfaces.  For ia64/sn, make use of one dma attribute,
DMA_ATTR_WRITE_BARRIER.  Introduce swiotlb_*map*_attrs() functions.

Signed-off-by: Arthur Kepner <akepner@sgi.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Jes Sorensen <jes@sgi.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Roland Dreier <rdreier@cisco.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: David Miller <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Grant Grundler <grundler@parisc-linux.org>
Cc: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 42 insertions, 8 deletions

diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 3c95922e51e7..d568894df8cc 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -555,7 +555,8 @@ swiotlb_full(struct device *dev, size_t size, int dir, int do_panic)
  * either swiotlb_unmap_single or swiotlb_dma_sync_single is performed.
  */
 dma_addr_t
-swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, int dir)
+swiotlb_map_single_attrs(struct device *hwdev, void *ptr, size_t size,
+			 int dir, struct dma_attrs *attrs)
 {
 	dma_addr_t dev_addr = virt_to_bus(ptr);
 	void *map;
@@ -588,6 +589,13 @@ swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, int dir)
 
 	return dev_addr;
 }
+EXPORT_SYMBOL(swiotlb_map_single_attrs);
+
+dma_addr_t
+swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, int dir)
+{
+	return swiotlb_map_single_attrs(hwdev, ptr, size, dir, NULL);
+}
 
 /*
  * Unmap a single streaming mode DMA translation.  The dma_addr and size must
@@ -598,8 +606,8 @@ swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, int dir)
  * whatever the device wrote there.
  */
 void
-swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr, size_t size,
-		     int dir)
+swiotlb_unmap_single_attrs(struct device *hwdev, dma_addr_t dev_addr,
+			   size_t size, int dir, struct dma_attrs *attrs)
 {
 	char *dma_addr = bus_to_virt(dev_addr);
 
@@ -609,7 +617,14 @@ swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr, size_t size,
 	else if (dir == DMA_FROM_DEVICE)
 		dma_mark_clean(dma_addr, size);
 }
+EXPORT_SYMBOL(swiotlb_unmap_single_attrs);
 
+void
+swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr, size_t size,
+		     int dir)
+{
+	return swiotlb_unmap_single_attrs(hwdev, dev_addr, size, dir, NULL);
+}
 /*
  * Make physical memory consistent for a single streaming mode DMA translation
  * after a transfer.
@@ -680,6 +695,8 @@ swiotlb_sync_single_range_for_device(struct device *hwdev, dma_addr_t dev_addr,
 				  SYNC_FOR_DEVICE);
 }
 
+void swiotlb_unmap_sg_attrs(struct device *, struct scatterlist *, int, int,
+			    struct dma_attrs *);
 /*
  * Map a set of buffers described by scatterlist in streaming mode for DMA.
  * This is the scatter-gather version of the above swiotlb_map_single
@@ -697,8 +714,8 @@ swiotlb_sync_single_range_for_device(struct device *hwdev, dma_addr_t dev_addr,
  * same here.
  */
 int
-swiotlb_map_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
-	       int dir)
+swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, int nelems,
+		     int dir, struct dma_attrs *attrs)
 {
 	struct scatterlist *sg;
 	void *addr;
@@ -716,7 +733,8 @@ swiotlb_map_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
 				/* Don't panic here, we expect map_sg users
 				   to do proper error handling. */
 				swiotlb_full(hwdev, sg->length, dir, 0);
-				swiotlb_unmap_sg(hwdev, sgl, i, dir);
+				swiotlb_unmap_sg_attrs(hwdev, sgl, i, dir,
+						       attrs);
 				sgl[0].dma_length = 0;
 				return 0;
 			}
@@ -727,14 +745,22 @@ swiotlb_map_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
 	}
 	return nelems;
 }
+EXPORT_SYMBOL(swiotlb_map_sg_attrs);
+
+int
+swiotlb_map_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
+	       int dir)
+{
+	return swiotlb_map_sg_attrs(hwdev, sgl, nelems, dir, NULL);
+}
 
 /*
  * Unmap a set of streaming mode DMA translations.  Again, cpu read rules
  * concerning calls here are the same as for swiotlb_unmap_single() above.
  */
 void
-swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
-		 int dir)
+swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
+		       int nelems, int dir, struct dma_attrs *attrs)
 {
 	struct scatterlist *sg;
 	int i;
@@ -749,6 +775,14 @@ swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
 			dma_mark_clean(SG_ENT_VIRT_ADDRESS(sg), sg->dma_length);
 	}
 }
+EXPORT_SYMBOL(swiotlb_unmap_sg_attrs);
+
+void
+swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
+		 int dir)
+{
+	return swiotlb_unmap_sg_attrs(hwdev, sgl, nelems, dir, NULL);
+}
 
 /*
  * Make physical memory consistent for a set of streaming mode DMA translations