Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\dma.c Create Date:2022-07-28 10:55:30
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:proc_dma_show

Proto:static int proc_dma_show(struct seq_file *m, void *v)

Type:int

Parameter:

TypeParameterName
struct seq_file *m
void *v
122  When i < NOTES about DMA transfers:* controller 1: channels 0-3, byte operations, ports 00-1F* controller 2: channels 4-7, word operations, ports C0-DF* - ALL registers are 8 bits only, regardless of transfer size* - channel 4 is not used - cascades 1 into 2 cycle
123  If lock Then
124  seq_printf(m, "%2d: %s\n", i, device_id)
128  Return 0