函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\dma\direct.c Create Date:2022-07-27 11:33:11
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：dma_direct_max_mapping_size

函数原型：size_t dma_direct_max_mapping_size(struct device *dev)

返回类型：size_t

参数：

类型参数名称
struct device *dev
501  如果is_swiotlb_active()且dma_addressing_limited - return if the device is addressing limited*@dev: device to check* Return %true if the devices DMA mask is too small to address all memory in* the system, else %false. Lack of addressing bits is the prime reason for或swiotlb_force恒等于SWIOTLB_FORCE的值则返回:swiotlb_max_mapping_size(dev)
504  返回:SIZE_MAX
调用者
名称描述
dma_max_mapping_size