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16 lines
553 B
16 lines
553 B
/* 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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