linux-4.4.1/dma_contiguous_reserve_area()
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開始行:
*参照元 [#c2c08032]
#backlinks
*説明 [#bfc1d62e]
-パス: 複数あり
--CONFIG_DMA_CMA 有効: [[linux-4.4.1/drivers/base/dma-con...
--CONFIG_DMA_CMA 無効: [[linux-4.4.1/include/linux/dma-co...
--[[linux-4.4.1/CONFIG_DMA_CMA]]
-FIXME: これは何？
--説明
**引数 [#s57a139a]
-phys_addr_t size
--
--[[linux-4.4.1/phys_addr_t]]
-phys_addr_t base
--
-phys_addr_t limit
--
-struct cma **res_cma
--
--[[linux-4.4.1/cma]]
-bool fixed
--
**返り値 [#ycd60c08]
-int
--
**参考 [#o6f6c5d9]
*実装 [#xa8ceff5]
**CONFIG_DMA_CMA 有効: linux-4.4.1/drivers/base/dma-conti...
/**
* dma_contiguous_reserve_area() - reserve custom contig...
* @size: Size of the reserved area (in bytes),
* @base: Base address of the reserved area optional, us...
* @limit: End address of the reserved memory (optional,...
* @res_cma: Pointer to store the created cma region.
* @fixed: hint about where to place the reserved area
*
* This function reserves memory from early allocator. I...
* called by arch specific code once the early allocator...
* has been activated and all other subsystems have alre...
* memory. This function allows to create custom reserve...
* devices.
*
* If @fixed is true, reserve contiguous area at exactly...
* reserve in range from @base to @limit.
*/
int __init dma_contiguous_reserve_area(phys_addr_t size,...
phys_addr_t limit, struct cma **res_cma,
bool fixed)
{
int ret;
ret = cma_declare_contiguous(base, size, limit, 0, 0, f...
if (ret)
return ret;
-
--[[linux-4.4.1/cma_declare_contiguous()]]
/* Architecture specific contiguous memory fixup. */
dma_contiguous_early_fixup(cma_get_base(*res_cma),
cma_get_size(*res_cma));
-
--[[linux-4.4.1/dma_contiguous_early_fixup()]]
--[[linux-4.4.1/cma_get_base()]]
--[[linux-4.4.1/cma_get_size()]]
return 0;
}
**CONFIG_DMA_CMA 無効: linux-4.4.1/include/linux/dma-cont...
static inline int dma_contiguous_reserve_area(phys_addr_...
phys_addr_t limit, struct cma **res_cma,
bool fixed)
{
return -ENOSYS;
}
*コメント [#z72d28d5]
終了行:
*参照元 [#c2c08032]
#backlinks
*説明 [#bfc1d62e]
-パス: 複数あり
--CONFIG_DMA_CMA 有効: [[linux-4.4.1/drivers/base/dma-con...
--CONFIG_DMA_CMA 無効: [[linux-4.4.1/include/linux/dma-co...
--[[linux-4.4.1/CONFIG_DMA_CMA]]
-FIXME: これは何？
--説明
**引数 [#s57a139a]
-phys_addr_t size
--
--[[linux-4.4.1/phys_addr_t]]
-phys_addr_t base
--
-phys_addr_t limit
--
-struct cma **res_cma
--
--[[linux-4.4.1/cma]]
-bool fixed
--
**返り値 [#ycd60c08]
-int
--
**参考 [#o6f6c5d9]
*実装 [#xa8ceff5]
**CONFIG_DMA_CMA 有効: linux-4.4.1/drivers/base/dma-conti...
/**
* dma_contiguous_reserve_area() - reserve custom contig...
* @size: Size of the reserved area (in bytes),
* @base: Base address of the reserved area optional, us...
* @limit: End address of the reserved memory (optional,...
* @res_cma: Pointer to store the created cma region.
* @fixed: hint about where to place the reserved area
*
* This function reserves memory from early allocator. I...
* called by arch specific code once the early allocator...
* has been activated and all other subsystems have alre...
* memory. This function allows to create custom reserve...
* devices.
*
* If @fixed is true, reserve contiguous area at exactly...
* reserve in range from @base to @limit.
*/
int __init dma_contiguous_reserve_area(phys_addr_t size,...
phys_addr_t limit, struct cma **res_cma,
bool fixed)
{
int ret;
ret = cma_declare_contiguous(base, size, limit, 0, 0, f...
if (ret)
return ret;
-
--[[linux-4.4.1/cma_declare_contiguous()]]
/* Architecture specific contiguous memory fixup. */
dma_contiguous_early_fixup(cma_get_base(*res_cma),
cma_get_size(*res_cma));
-
--[[linux-4.4.1/dma_contiguous_early_fixup()]]
--[[linux-4.4.1/cma_get_base()]]
--[[linux-4.4.1/cma_get_size()]]
return 0;
}
**CONFIG_DMA_CMA 無効: linux-4.4.1/include/linux/dma-cont...
static inline int dma_contiguous_reserve_area(phys_addr_...
phys_addr_t limit, struct cma **res_cma,
bool fixed)
{
return -ENOSYS;
}
*コメント [#z72d28d5]
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