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usr
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src
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linux-headers-5.4.0-216
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include
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asm-generic
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Filename :
dma.h
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/* 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 */