linux-2.6.33/dma_map_single(arm)
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開始行:
*参照元 [#g0e6520d]
#backlinks
*説明 [#vf2bc497]
-パス: [[linux-2.6.33/arch/arm/include/asm/dma-mapping.h]]
-FIXME: これは何？
--説明
**引数 [#r3694a8f]
-struct device *dev
--
--[[linux-2.6.33/device]]
-void *cpu_addr
--
-size_t size
--
-enum dma_data_direction dir
--
--[[linux-2.6.33/dma_data_direction]]
**返り値 [#v8194eeb]
-dma_addr_t
--
**参考 [#s25d81ec]
*実装 [#j09d92e2]
/**
* dma_map_single - map a single buffer for streaming DMA
* @dev: valid struct device pointer, or NULL for ISA an...
* @cpu_addr: CPU direct mapped address of buffer
* @size: size of buffer to map
* @dir: DMA transfer direction
*
* Ensure that any data held in the cache is appropriate...
* or written back.
*
* The device owns this memory once this call has comple...
* can regain ownership by calling dma_unmap_single() or
* dma_sync_single_for_cpu().
*/
static inline dma_addr_t dma_map_single(struct device *d...
size_t size, enum dma_data_direction dir)
{
BUG_ON(!valid_dma_direction(dir));
-
--[[linux-2.6.33/BUG_ON()]]
--[[linux-2.6.33/valid_dma_direction()]]
if (!arch_is_coherent())
dma_cache_maint(cpu_addr, size, dir);
-
--[[linux-2.6.33/arch_is_coherent()]]
--[[linux-2.6.33/dma_cache_main()]]
return virt_to_dma(dev, cpu_addr);
-
--[[linux-2.6.33/virt_to_dma()]]
}
*コメント [#k68ebab1]
終了行:
*参照元 [#g0e6520d]
#backlinks
*説明 [#vf2bc497]
-パス: [[linux-2.6.33/arch/arm/include/asm/dma-mapping.h]]
-FIXME: これは何？
--説明
**引数 [#r3694a8f]
-struct device *dev
--
--[[linux-2.6.33/device]]
-void *cpu_addr
--
-size_t size
--
-enum dma_data_direction dir
--
--[[linux-2.6.33/dma_data_direction]]
**返り値 [#v8194eeb]
-dma_addr_t
--
**参考 [#s25d81ec]
*実装 [#j09d92e2]
/**
* dma_map_single - map a single buffer for streaming DMA
* @dev: valid struct device pointer, or NULL for ISA an...
* @cpu_addr: CPU direct mapped address of buffer
* @size: size of buffer to map
* @dir: DMA transfer direction
*
* Ensure that any data held in the cache is appropriate...
* or written back.
*
* The device owns this memory once this call has comple...
* can regain ownership by calling dma_unmap_single() or
* dma_sync_single_for_cpu().
*/
static inline dma_addr_t dma_map_single(struct device *d...
size_t size, enum dma_data_direction dir)
{
BUG_ON(!valid_dma_direction(dir));
-
--[[linux-2.6.33/BUG_ON()]]
--[[linux-2.6.33/valid_dma_direction()]]
if (!arch_is_coherent())
dma_cache_maint(cpu_addr, size, dir);
-
--[[linux-2.6.33/arch_is_coherent()]]
--[[linux-2.6.33/dma_cache_main()]]
return virt_to_dma(dev, cpu_addr);
-
--[[linux-2.6.33/virt_to_dma()]]
}
*コメント [#k68ebab1]
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