函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\dma\mapping.c Create Date:2022-07-27 11:32:37
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：dma_cache_sync

函数原型：void dma_cache_sync(struct device *dev, void *vaddr, size_t size, enum dma_data_direction dir)

返回类型：void

参数：

类型参数名称
struct device *dev
void *vaddr
size_tsize
enum dma_data_directiondir
373  ops等于get_dma_ops(dev)
375  BUG_ON(!valid_dma_direction(dir))
377  如果dma_is_direct(ops)则arch_dma_cache_sync(dev, vaddr, size, dir)
379  否则如果cache_sync则cache_sync(dev, vaddr, size, dir)