函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\linux\dma-mapping.h Create Date:2022-07-27 06:51:42
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：dma_sync_single_for_cpu

函数原型：static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr, size_t size, enum dma_data_direction dir)

返回类型：void

参数：

类型参数名称
struct device *dev
dma_addr_taddr
size_tsize
enum dma_data_directiondir
380  ops等于get_dma_ops(dev)
382  BUG_ON(!valid_dma_direction(dir))
383  如果dma_is_direct(ops)则dma_direct_sync_single_for_cpu(dev, addr, size, dir)
385  否则如果sync_single_for_cpu则sync_single_for_cpu(dev, addr, size, dir)
387  debug_dma_sync_single_for_cpu(dev, addr, size, dir)
调用者
名称描述
dma_sync_single_range_for_cpu
pci_dma_sync_single_for_cpu
ib_dma_sync_single_for_cpu_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU*@dev: The device for which the DMA address was created*@addr: The DMA address*@size: The size of the region in bytes*@dir: The direction of the DMA