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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2009-01-05 23:59:01 +0900
committerIngo Molnar <mingo@elte.hu>2009-01-06 14:06:57 +0100
commitf0402a262e1a4c03fc66b83659823bdcaac3c41a (patch)
tree6c286b8d5e60b27eee131b5403133493502c4a84 /include/linux/dma-mapping.h
parentd7dff84053524186b139342ac66a4160ce6bb517 (diff)
generic: add common struct for dma map operations
This adds struct dma_map_ops include/linux/dma-mapping.h, which, is used to handle multiple sets of dma mapping API. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/dma-mapping.h')
-rw-r--r--include/linux/dma-mapping.h48
1 files changed, 48 insertions, 0 deletions
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index ba9114ec5d3a..d7d090d21031 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -3,6 +3,8 @@
#include <linux/device.h>
#include <linux/err.h>
+#include <linux/dma-attrs.h>
+#include <linux/scatterlist.h>
/* These definitions mirror those in pci.h, so they can be used
* interchangeably with their PCI_ counterparts */
@@ -13,6 +15,52 @@ enum dma_data_direction {
DMA_NONE = 3,
};
+struct dma_map_ops {
+ void* (*alloc_coherent)(struct device *dev, size_t size,
+ dma_addr_t *dma_handle, gfp_t gfp);
+ void (*free_coherent)(struct device *dev, size_t size,
+ void *vaddr, dma_addr_t dma_handle);
+ dma_addr_t (*map_page)(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir,
+ struct dma_attrs *attrs);
+ void (*unmap_page)(struct device *dev, dma_addr_t dma_handle,
+ size_t size, enum dma_data_direction dir,
+ struct dma_attrs *attrs);
+ int (*map_sg)(struct device *dev, struct scatterlist *sg,
+ int nents, enum dma_data_direction dir,
+ struct dma_attrs *attrs);
+ void (*unmap_sg)(struct device *dev,
+ struct scatterlist *sg, int nents,
+ enum dma_data_direction dir,
+ struct dma_attrs *attrs);
+ void (*sync_single_for_cpu)(struct device *dev,
+ dma_addr_t dma_handle, size_t size,
+ enum dma_data_direction dir);
+ void (*sync_single_for_device)(struct device *dev,
+ dma_addr_t dma_handle, size_t size,
+ enum dma_data_direction dir);
+ void (*sync_single_range_for_cpu)(struct device *dev,
+ dma_addr_t dma_handle,
+ unsigned long offset,
+ size_t size,
+ enum dma_data_direction dir);
+ void (*sync_single_range_for_device)(struct device *dev,
+ dma_addr_t dma_handle,
+ unsigned long offset,
+ size_t size,
+ enum dma_data_direction dir);
+ void (*sync_sg_for_cpu)(struct device *dev,
+ struct scatterlist *sg, int nents,
+ enum dma_data_direction dir);
+ void (*sync_sg_for_device)(struct device *dev,
+ struct scatterlist *sg, int nents,
+ enum dma_data_direction dir);
+ int (*mapping_error)(struct device *dev, dma_addr_t dma_addr);
+ int (*dma_supported)(struct device *dev, u64 mask);
+ int is_phys;
+};
+
#define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
/*