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 06:51:44
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：dma_get_mask

函数原型：static inline u64 dma_get_mask(struct device *dev)

返回类型：u64

参数：

类型参数名称
struct device *dev
658  如果 dma mask (if dma'able device) 且 dma mask (if dma'able device) 则返回: dma mask (if dma'able device)
660  返回:DMA_BIT_MASK(32)
调用者
名称描述
dma_addressing_limiteddma_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