File: dma.h

package info (click to toggle)
linux 6.17.8-1
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 1,734,788 kB
  • sloc: ansic: 26,682,992; asm: 271,227; sh: 147,381; python: 75,980; makefile: 57,306; perl: 36,943; xml: 19,562; cpp: 5,899; yacc: 4,909; lex: 2,943; awk: 1,556; sed: 29; ruby: 25
file content (33 lines) | stat: -rw-r--r-- 910 bytes parent folder | download | duplicates (37)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef DMA_H
#define DMA_H

#include <asm/glue-cache.h>

#ifndef MULTI_CACHE
#define dmac_map_area			__glue(_CACHE,_dma_map_area)
#define dmac_unmap_area 		__glue(_CACHE,_dma_unmap_area)

/*
 * These are private to the dma-mapping API.  Do not use directly.
 * Their sole purpose is to ensure that data held in the cache
 * is visible to DMA, or data written by DMA to system memory is
 * visible to the CPU.
 */
extern void dmac_map_area(const void *, size_t, int);
extern void dmac_unmap_area(const void *, size_t, int);

#else

/*
 * These are private to the dma-mapping API.  Do not use directly.
 * Their sole purpose is to ensure that data held in the cache
 * is visible to DMA, or data written by DMA to system memory is
 * visible to the CPU.
 */
#define dmac_map_area			cpu_cache.dma_map_area
#define dmac_unmap_area 		cpu_cache.dma_unmap_area

#endif

#endif