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_sg_for_device

函数原型：static inline void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems, enum dma_data_direction dir)

返回类型：void

参数：

类型参数名称
struct device *dev
struct scatterlist *sg
intnelems
enum dma_data_directiondir
422  ops等于get_dma_ops(dev)
424  BUG_ON(!valid_dma_direction(dir))
425  如果dma_is_direct(ops)则dma_direct_sync_sg_for_device(dev, sg, nelems, dir)
427  否则如果sync_sg_for_device则sync_sg_for_device(dev, sg, nelems, dir)
429  debug_dma_sync_sg_for_device(dev, sg, nelems, dir)
调用者
名称描述
pci_dma_sync_sg_for_device