lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

x86: remove map_single and unmap_single in struct dma_mapping_ops

Browse Source 
This patch converts dma_map_single and dma_unmap_single to use
map_page and unmap_page respectively and removes unnecessary
map_single and unmap_single in struct dma_mapping_ops.

This leaves intel-iommu's dma_map_single and dma_unmap_single since
IA64 uses them. They will be removed after the unification.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
FUJITA Tomonori
2009-01-05 23:47:28 +09:00
committed by Ingo Molnar
parent 33feffd452
commit d7dff84053
7 changed files with 8 additions and 76 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
arch/x86/include/asm/dma-mapping.h
View File

@@ -24,10 +24,6 @@ struct dma_mapping_ops {
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_single)(struct device *hwdev, phys_addr_t ptr,
size_t size, int direction);
void (*unmap_single)(struct device *dev, dma_addr_t addr,
size_t size, int direction);
void (*sync_single_for_cpu)(struct device *hwdev,
dma_addr_t dma_handle, size_t size,
int direction);
@@ -103,7 +99,9 @@ dma_map_single(struct device *hwdev, void *ptr, size_t size,
struct dma_mapping_ops *ops = get_dma_ops(hwdev);
BUG_ON(!valid_dma_direction(direction));
return ops->map_single(hwdev, virt_to_phys(ptr), size, direction);
return ops->map_page(hwdev, virt_to_page(ptr),
(unsigned long)ptr & ~PAGE_MASK, size,
direction, NULL);
}
static inline void
@@ -113,8 +111,8 @@ dma_unmap_single(struct device *dev, dma_addr_t addr, size_t size,
struct dma_mapping_ops *ops = get_dma_ops(dev);
BUG_ON(!valid_dma_direction(direction));
if (ops->unmap_single)
ops->unmap_single(dev, addr, size, direction);
if (ops->unmap_page)
ops->unmap_page(dev, addr, size, direction, NULL);
}
static inline int
@@ -221,8 +219,7 @@ static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
struct dma_mapping_ops *ops = get_dma_ops(dev);
BUG_ON(!valid_dma_direction(direction));
return ops->map_single(dev, page_to_phys(page) + offset,
size, direction);
return ops->map_page(dev, page, offset, size, direction, NULL);
}
static inline void dma_unmap_page(struct device *dev, dma_addr_t addr,