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authorMark Nelson <markn@au1.ibm.com>2008-07-05 05:05:42 +1000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-07-09 16:30:43 +1000
commit3affedc4e1ce837033b6c5e9289d2ce2f5a62d31 (patch)
tree83296af2c727e5b5f64b88b629dcf37f8e60e3f0 /include/asm-powerpc
parentc8692362db3db3a6f644e05a477161d967430aac (diff)
powerpc/dma: implement new dma_*map*_attrs() interfaces
Update powerpc to use the new dma_*map*_attrs() interfaces. In doing so update struct dma_mapping_ops to accept a struct dma_attrs and propagate these changes through to all users of the code (generic IOMMU and the 64bit DMA code, and the iseries and ps3 platform code). The old dma_*map_*() interfaces are reimplemented as calls to the corresponding new interfaces. Signed-off-by: Mark Nelson <markn@au1.ibm.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'include/asm-powerpc')
-rw-r--r--include/asm-powerpc/dma-mapping.h116
-rw-r--r--include/asm-powerpc/iommu.h12
2 files changed, 94 insertions, 34 deletions
diff --git a/include/asm-powerpc/dma-mapping.h b/include/asm-powerpc/dma-mapping.h
index bbefb69bfb6..de1395023cb 100644
--- a/include/asm-powerpc/dma-mapping.h
+++ b/include/asm-powerpc/dma-mapping.h
@@ -13,6 +13,7 @@
/* need struct page definitions */
#include <linux/mm.h>
#include <linux/scatterlist.h>
+#include <linux/dma-attrs.h>
#include <asm/io.h>
#define DMA_ERROR_CODE (~(dma_addr_t)0x0)
@@ -53,13 +54,17 @@ struct dma_mapping_ops {
void (*free_coherent)(struct device *dev, size_t size,
void *vaddr, dma_addr_t dma_handle);
dma_addr_t (*map_single)(struct device *dev, void *ptr,
- size_t size, enum dma_data_direction direction);
+ size_t size, enum dma_data_direction direction,
+ struct dma_attrs *attrs);
void (*unmap_single)(struct device *dev, dma_addr_t dma_addr,
- size_t size, enum dma_data_direction direction);
+ size_t size, enum dma_data_direction direction,
+ struct dma_attrs *attrs);
int (*map_sg)(struct device *dev, struct scatterlist *sg,
- int nents, enum dma_data_direction direction);
+ int nents, enum dma_data_direction direction,
+ struct dma_attrs *attrs);
void (*unmap_sg)(struct device *dev, struct scatterlist *sg,
- int nents, enum dma_data_direction direction);
+ int nents, enum dma_data_direction direction,
+ struct dma_attrs *attrs);
int (*dma_supported)(struct device *dev, u64 mask);
int (*set_dma_mask)(struct device *dev, u64 dma_mask);
};
@@ -109,6 +114,77 @@ static inline int dma_set_mask(struct device *dev, u64 dma_mask)
return 0;
}
+static inline dma_addr_t dma_map_single_attrs(struct device *dev,
+ void *cpu_addr,
+ size_t size,
+ enum dma_data_direction direction,
+ struct dma_attrs *attrs)
+{
+ struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
+
+ BUG_ON(!dma_ops);
+ return dma_ops->map_single(dev, cpu_addr, size, direction, attrs);
+}
+
+static inline void dma_unmap_single_attrs(struct device *dev,
+ dma_addr_t dma_addr,
+ size_t size,
+ enum dma_data_direction direction,
+ struct dma_attrs *attrs)
+{
+ struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
+
+ BUG_ON(!dma_ops);
+ dma_ops->unmap_single(dev, dma_addr, size, direction, attrs);
+}
+
+static inline dma_addr_t dma_map_page_attrs(struct device *dev,
+ struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction direction,
+ struct dma_attrs *attrs)
+{
+ struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
+
+ BUG_ON(!dma_ops);
+ return dma_ops->map_single(dev, page_address(page) + offset, size,
+ direction, attrs);
+}
+
+static inline void dma_unmap_page_attrs(struct device *dev,
+ dma_addr_t dma_address,
+ size_t size,
+ enum dma_data_direction direction,
+ struct dma_attrs *attrs)
+{
+ struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
+
+ BUG_ON(!dma_ops);
+ dma_ops->unmap_single(dev, dma_address, size, direction, attrs);
+}
+
+static inline int dma_map_sg_attrs(struct device *dev, struct scatterlist *sg,
+ int nents, enum dma_data_direction direction,
+ struct dma_attrs *attrs)
+{
+ struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
+
+ BUG_ON(!dma_ops);
+ return dma_ops->map_sg(dev, sg, nents, direction, attrs);
+}
+
+static inline void dma_unmap_sg_attrs(struct device *dev,
+ struct scatterlist *sg,
+ int nhwentries,
+ enum dma_data_direction direction,
+ struct dma_attrs *attrs)
+{
+ struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
+
+ BUG_ON(!dma_ops);
+ dma_ops->unmap_sg(dev, sg, nhwentries, direction, attrs);
+}
+
static inline void *dma_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag)
{
@@ -131,63 +207,43 @@ static inline dma_addr_t dma_map_single(struct device *dev, void *cpu_addr,
size_t size,
enum dma_data_direction direction)
{
- struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
-
- BUG_ON(!dma_ops);
- return dma_ops->map_single(dev, cpu_addr, size, direction);
+ return dma_map_single_attrs(dev, cpu_addr, size, direction, NULL);
}
static inline void dma_unmap_single(struct device *dev, dma_addr_t dma_addr,
size_t size,
enum dma_data_direction direction)
{
- struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
-
- BUG_ON(!dma_ops);
- dma_ops->unmap_single(dev, dma_addr, size, direction);
+ dma_unmap_single_attrs(dev, dma_addr, size, direction, NULL);
}
static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction direction)
{
- struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
-
- BUG_ON(!dma_ops);
- return dma_ops->map_single(dev, page_address(page) + offset, size,
- direction);
+ return dma_map_page_attrs(dev, page, offset, size, direction, NULL);
}
static inline void dma_unmap_page(struct device *dev, dma_addr_t dma_address,
size_t size,
enum dma_data_direction direction)
{
- struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
-
- BUG_ON(!dma_ops);
- dma_ops->unmap_single(dev, dma_address, size, direction);
+ dma_unmap_page_attrs(dev, dma_address, size, direction, NULL);
}
static inline int dma_map_sg(struct device *dev, struct scatterlist *sg,
int nents, enum dma_data_direction direction)
{
- struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
-
- BUG_ON(!dma_ops);
- return dma_ops->map_sg(dev, sg, nents, direction);
+ return dma_map_sg_attrs(dev, sg, nents, direction, NULL);
}
static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
int nhwentries,
enum dma_data_direction direction)
{
- struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
-
- BUG_ON(!dma_ops);
- dma_ops->unmap_sg(dev, sg, nhwentries, direction);
+ dma_unmap_sg_attrs(dev, sg, nhwentries, direction, NULL);
}
-
/*
* Available generic sets of operations
*/
diff --git a/include/asm-powerpc/iommu.h b/include/asm-powerpc/iommu.h
index 65f6682bee8..51ecfef8d84 100644
--- a/include/asm-powerpc/iommu.h
+++ b/include/asm-powerpc/iommu.h
@@ -81,9 +81,11 @@ extern struct iommu_table *iommu_init_table(struct iommu_table * tbl,
extern int iommu_map_sg(struct device *dev, struct iommu_table *tbl,
struct scatterlist *sglist, int nelems,
- unsigned long mask, enum dma_data_direction direction);
+ unsigned long mask, enum dma_data_direction direction,
+ struct dma_attrs *attrs);
extern void iommu_unmap_sg(struct iommu_table *tbl, struct scatterlist *sglist,
- int nelems, enum dma_data_direction direction);
+ int nelems, enum dma_data_direction direction,
+ struct dma_attrs *attrs);
extern void *iommu_alloc_coherent(struct device *dev, struct iommu_table *tbl,
size_t size, dma_addr_t *dma_handle,
@@ -92,9 +94,11 @@ extern void iommu_free_coherent(struct iommu_table *tbl, size_t size,
void *vaddr, dma_addr_t dma_handle);
extern dma_addr_t iommu_map_single(struct device *dev, struct iommu_table *tbl,
void *vaddr, size_t size, unsigned long mask,
- enum dma_data_direction direction);
+ enum dma_data_direction direction,
+ struct dma_attrs *attrs);
extern void iommu_unmap_single(struct iommu_table *tbl, dma_addr_t dma_handle,
- size_t size, enum dma_data_direction direction);
+ size_t size, enum dma_data_direction direction,
+ struct dma_attrs *attrs);
extern void iommu_init_early_pSeries(void);
extern void iommu_init_early_iSeries(void);