X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=include%2Flinux%2Fdma-mapping.h;h=952e0f857ac9d9545750bbd5f197df6034a99913;hb=47ac3199acb0676b58491b29418283f37a116952;hp=2dc21cbeb3049a0d9a2ffa2d0ee27271c66d1c62;hpb=2fe83b3ad12d43799af5f3156886eca443a88bac;p=linux-2.6-omap-h63xx.git

diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 2dc21cbeb30..952e0f857ac 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -1,5 +1,5 @@
-#ifndef _ASM_LINUX_DMA_MAPPING_H
-#define _ASM_LINUX_DMA_MAPPING_H
+#ifndef _LINUX_DMA_MAPPING_H
+#define _LINUX_DMA_MAPPING_H
 
 #include <linux/device.h>
 #include <linux/err.h>
@@ -13,16 +13,28 @@ enum dma_data_direction {
 	DMA_NONE = 3,
 };
 
-#define DMA_64BIT_MASK	0xffffffffffffffffULL
-#define DMA_48BIT_MASK	0x0000ffffffffffffULL
-#define DMA_40BIT_MASK	0x000000ffffffffffULL
-#define DMA_39BIT_MASK	0x0000007fffffffffULL
-#define DMA_32BIT_MASK	0x00000000ffffffffULL
-#define DMA_31BIT_MASK	0x000000007fffffffULL
-#define DMA_30BIT_MASK	0x000000003fffffffULL
-#define DMA_29BIT_MASK	0x000000001fffffffULL
-#define DMA_28BIT_MASK	0x000000000fffffffULL
-#define DMA_24BIT_MASK	0x0000000000ffffffULL
+#define DMA_BIT_MASK(n)	(((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
+
+/*
+ * NOTE: do not use the below macros in new code and do not add new definitions
+ * here.
+ *
+ * Instead, just open-code DMA_BIT_MASK(n) within your driver
+ */
+#define DMA_64BIT_MASK	DMA_BIT_MASK(64)
+#define DMA_48BIT_MASK	DMA_BIT_MASK(48)
+#define DMA_47BIT_MASK	DMA_BIT_MASK(47)
+#define DMA_40BIT_MASK	DMA_BIT_MASK(40)
+#define DMA_39BIT_MASK	DMA_BIT_MASK(39)
+#define DMA_35BIT_MASK	DMA_BIT_MASK(35)
+#define DMA_32BIT_MASK	DMA_BIT_MASK(32)
+#define DMA_31BIT_MASK	DMA_BIT_MASK(31)
+#define DMA_30BIT_MASK	DMA_BIT_MASK(30)
+#define DMA_29BIT_MASK	DMA_BIT_MASK(29)
+#define DMA_28BIT_MASK	DMA_BIT_MASK(28)
+#define DMA_24BIT_MASK	DMA_BIT_MASK(24)
+
+#define DMA_MASK_NONE	0x0ULL
 
 static inline int valid_dma_direction(int dma_direction)
 {
@@ -31,6 +43,11 @@ static inline int valid_dma_direction(int dma_direction)
 		(dma_direction == DMA_FROM_DEVICE));
 }
 
+static inline int is_device_dma_capable(struct device *dev)
+{
+	return dev->dma_mask != NULL && *dev->dma_mask != DMA_MASK_NONE;
+}
+
 #ifdef CONFIG_HAS_DMA
 #include <asm/dma-mapping.h>
 #else
@@ -43,6 +60,36 @@ static inline int valid_dma_direction(int dma_direction)
 
 extern u64 dma_get_required_mask(struct device *dev);
 
+static inline unsigned int dma_get_max_seg_size(struct device *dev)
+{
+	return dev->dma_parms ? dev->dma_parms->max_segment_size : 65536;
+}
+
+static inline unsigned int dma_set_max_seg_size(struct device *dev,
+						unsigned int size)
+{
+	if (dev->dma_parms) {
+		dev->dma_parms->max_segment_size = size;
+		return 0;
+	} else
+		return -EIO;
+}
+
+static inline unsigned long dma_get_seg_boundary(struct device *dev)
+{
+	return dev->dma_parms ?
+		dev->dma_parms->segment_boundary_mask : 0xffffffff;
+}
+
+static inline int dma_set_seg_boundary(struct device *dev, unsigned long mask)
+{
+	if (dev->dma_parms) {
+		dev->dma_parms->segment_boundary_mask = mask;
+		return 0;
+	} else
+		return -EIO;
+}
+
 /* flags for the coherent memory api */
 #define	DMA_MEMORY_MAP			0x01
 #define DMA_MEMORY_IO			0x02
@@ -99,4 +146,21 @@ static inline void dmam_release_declared_memory(struct device *dev)
 }
 #endif /* ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY */
 
+#ifndef CONFIG_HAVE_DMA_ATTRS
+struct dma_attrs;
+
+#define dma_map_single_attrs(dev, cpu_addr, size, dir, attrs) \
+	dma_map_single(dev, cpu_addr, size, dir)
+
+#define dma_unmap_single_attrs(dev, dma_addr, size, dir, attrs) \
+	dma_unmap_single(dev, dma_addr, size, dir)
+
+#define dma_map_sg_attrs(dev, sgl, nents, dir, attrs) \
+	dma_map_sg(dev, sgl, nents, dir)
+
+#define dma_unmap_sg_attrs(dev, sgl, nents, dir, attrs) \
+	dma_unmap_sg(dev, sgl, nents, dir)
+
+#endif /* CONFIG_HAVE_DMA_ATTRS */
+
 #endif