17 lines
553 B
C
17 lines
553 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_GENERIC_DMA_H
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#define __ASM_GENERIC_DMA_H
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/*
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* This file traditionally describes the i8237 PC style DMA controller.
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* Most architectures don't have these any more and can get the minimal
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* implementation from kernel/dma.c by not defining MAX_DMA_CHANNELS.
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*
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* Some code relies on seeing MAX_DMA_ADDRESS though.
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*/
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#define MAX_DMA_ADDRESS PAGE_OFFSET
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extern int request_dma(unsigned int dmanr, const char *device_id);
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extern void free_dma(unsigned int dmanr);
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#endif /* __ASM_GENERIC_DMA_H */
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