[mirror_ubuntu-bionic-kernel.git] / include / asm-generic / dma.h

/* 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 */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
ae49e807 AB	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 */