File: dma.h

package info (click to toggle)
linux 6.1.133-1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,496,136 kB
  • sloc: ansic: 23,466,380; asm: 266,559; sh: 110,511; makefile: 49,889; python: 36,990; perl: 36,827; cpp: 6,056; yacc: 4,908; lex: 2,725; awk: 1,440; ruby: 25; sed: 5
file content (16 lines) | stat: -rw-r--r-- 553 bytes parent folder | download | duplicates (39) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
 
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_GENERIC_DMA_H
#define __ASM_GENERIC_DMA_H
/*
 * This file traditionally describes the i8237 PC style DMA controller.
 * Most architectures don't have these any more and can get the minimal
 * implementation from kernel/dma.c by not defining MAX_DMA_CHANNELS.
 *
 * Some code relies on seeing MAX_DMA_ADDRESS though.
 */
#define MAX_DMA_ADDRESS PAGE_OFFSET

extern int request_dma(unsigned int dmanr, const char *device_id);
extern void free_dma(unsigned int dmanr);

#endif /* __ASM_GENERIC_DMA_H */