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1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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2 | #ifndef __ASM_GENERIC_DMA_H |
3 | #define __ASM_GENERIC_DMA_H |
4 | /* |
5 | * This file traditionally describes the i8237 PC style DMA controller. |
6 | * Most architectures don't have these any more and can get the minimal |
7 | * implementation from kernel/dma.c by not defining MAX_DMA_CHANNELS. |
8 | * |
9 | * Some code relies on seeing MAX_DMA_ADDRESS though. |
10 | */ |
11 | #define MAX_DMA_ADDRESS PAGE_OFFSET |
12 | |
13 | extern int request_dma(unsigned int dmanr, const char *device_id); |
14 | extern void free_dma(unsigned int dmanr); |
15 | |
16 | #endif /* __ASM_GENERIC_DMA_H */ |
17 |
Warning: This file is not a C or C++ file. It does not have highlighting.