linux-4.4.1/dmam_alloc_coherent()
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開始行:
*参照元 [#a552280a]
#backlinks
*説明 [#a0e9fc8b]
-パス: [[linux-4.4.1/drivers/base/dma-mapping.c]]
-FIXME: これは何?
--説明
**引数 [#qd37f5cb]
-struct device *dev
--
--[[linux-4.4.1/device]]
-size_t size
--
-dma_addr_t *dma_handle
--
--[[linux-4.4.1/dma_addr_t]]
-gfp_t gfp
--
--[[linux-4.4.1/gfp_t]]
**返り値 [#h0c8196b]
-void *
--
**参考 [#wfdb8f89]
*実装 [#naf7f67b]
/**
* dmam_alloc_coherent - Managed dma_alloc_coherent()
* @dev: Device to allocate coherent memory for
* @size: Size of allocation
* @dma_handle: Out argument for allocated DMA handle
* @gfp: Allocation flags
*
* Managed dma_alloc_coherent(). Memory allocated using...
* will be automatically released on driver detach.
*
* RETURNS:
* Pointer to allocated memory on success, NULL on failu...
*/
void *dmam_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t...
{
struct dma_devres *dr;
void *vaddr;
-
--[[linux-4.4.1/dma_devres]]
dr = devres_alloc(dmam_coherent_release, sizeof(...
if (!dr)
return NULL;
-
--[[linux-4.4.1/devres_alloc()]]
--[[linux-4.4.1/dmam_coherent_release()]]
vaddr = dma_alloc_coherent(dev, size, dma_handle...
if (!vaddr) {
devres_free(dr);
return NULL;
}
-
--[[linux-4.4.1/dma_alloc_coherent()]]
--[[linux-4.4.1/devres_free()]]
dr->vaddr = vaddr;
dr->dma_handle = *dma_handle;
dr->size = size;
devres_add(dev, dr);
-
--[[linux-4.4.1/devres_add()]]
return vaddr;
}
EXPORT_SYMBOL(dmam_alloc_coherent);
-
--[[linux-4.4.1/EXPORT_SYMBOL()]]
*コメント [#be619ef4]
終了行:
*参照元 [#a552280a]
#backlinks
*説明 [#a0e9fc8b]
-パス: [[linux-4.4.1/drivers/base/dma-mapping.c]]
-FIXME: これは何?
--説明
**引数 [#qd37f5cb]
-struct device *dev
--
--[[linux-4.4.1/device]]
-size_t size
--
-dma_addr_t *dma_handle
--
--[[linux-4.4.1/dma_addr_t]]
-gfp_t gfp
--
--[[linux-4.4.1/gfp_t]]
**返り値 [#h0c8196b]
-void *
--
**参考 [#wfdb8f89]
*実装 [#naf7f67b]
/**
* dmam_alloc_coherent - Managed dma_alloc_coherent()
* @dev: Device to allocate coherent memory for
* @size: Size of allocation
* @dma_handle: Out argument for allocated DMA handle
* @gfp: Allocation flags
*
* Managed dma_alloc_coherent(). Memory allocated using...
* will be automatically released on driver detach.
*
* RETURNS:
* Pointer to allocated memory on success, NULL on failu...
*/
void *dmam_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t...
{
struct dma_devres *dr;
void *vaddr;
-
--[[linux-4.4.1/dma_devres]]
dr = devres_alloc(dmam_coherent_release, sizeof(...
if (!dr)
return NULL;
-
--[[linux-4.4.1/devres_alloc()]]
--[[linux-4.4.1/dmam_coherent_release()]]
vaddr = dma_alloc_coherent(dev, size, dma_handle...
if (!vaddr) {
devres_free(dr);
return NULL;
}
-
--[[linux-4.4.1/dma_alloc_coherent()]]
--[[linux-4.4.1/devres_free()]]
dr->vaddr = vaddr;
dr->dma_handle = *dma_handle;
dr->size = size;
devres_add(dev, dr);
-
--[[linux-4.4.1/devres_add()]]
return vaddr;
}
EXPORT_SYMBOL(dmam_alloc_coherent);
-
--[[linux-4.4.1/EXPORT_SYMBOL()]]
*コメント [#be619ef4]
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