[mirror_ubuntu-jammy-kernel.git] / include / asm-arm / arch-pxa / dma.h

/*
 *  linux/include/asm-arm/arch-pxa/dma.h
 *
 *  Author:	Nicolas Pitre
 *  Created:	Jun 15, 2001
 *  Copyright:	MontaVista Software, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#ifndef __ASM_ARCH_DMA_H
#define __ASM_ARCH_DMA_H

/*
 * Descriptor structure for PXA's DMA engine
 * Note: this structure must always be aligned to a 16-byte boundary.
 */

typedef struct pxa_dma_desc {
	volatile u32 ddadr;	/* Points to the next descriptor + flags */
	volatile u32 dsadr;	/* DSADR value for the current transfer */
	volatile u32 dtadr;	/* DTADR value for the current transfer */
	volatile u32 dcmd;	/* DCMD value for the current transfer */
} pxa_dma_desc;

typedef enum {
	DMA_PRIO_HIGH = 0,
	DMA_PRIO_MEDIUM = 1,
	DMA_PRIO_LOW = 2
} pxa_dma_prio;

#if defined(CONFIG_MACH_ARMCORE) && defined(CONFIG_PCI)
#define HAVE_ARCH_PCI_SET_DMA_MASK	1
#endif

/*
 * DMA registration
 */

int __init pxa_init_dma(int num_ch);

int pxa_request_dma (char *name,
			 pxa_dma_prio prio,
			 void (*irq_handler)(int, void *),
			 void *data);

void pxa_free_dma (int dma_ch);

#endif /* _ASM_ARCH_DMA_H */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/include/asm-arm/arch-pxa/dma.h
	3	*
	4	* Author: Nicolas Pitre
	5	* Created: Jun 15, 2001
	6	* Copyright: MontaVista Software, Inc.
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License version 2 as
	10	* published by the Free Software Foundation.
	11	*/
	12	#ifndef __ASM_ARCH_DMA_H
	13	#define __ASM_ARCH_DMA_H
	14
1da177e4 LT	15	/*
	16	* Descriptor structure for PXA's DMA engine
	17	* Note: this structure must always be aligned to a 16-byte boundary.
	18	*/
	19
	20	typedef struct pxa_dma_desc {
	21	volatile u32 ddadr; /* Points to the next descriptor + flags */
	22	volatile u32 dsadr; /* DSADR value for the current transfer */
	23	volatile u32 dtadr; /* DTADR value for the current transfer */
	24	volatile u32 dcmd; /* DCMD value for the current transfer */
	25	} pxa_dma_desc;
	26
99532559 NP	27	typedef enum {
	28	DMA_PRIO_HIGH = 0,
	29	DMA_PRIO_MEDIUM = 1,
	30	DMA_PRIO_LOW = 2
	31	} pxa_dma_prio;
	32
3696a8a4 MR	33	#if defined(CONFIG_MACH_ARMCORE) && defined(CONFIG_PCI)
	34	#define HAVE_ARCH_PCI_SET_DMA_MASK 1
	35	#endif
	36
1da177e4 LT	37	/*
	38	* DMA registration
	39	*/
	40
f53f066c EM	41	int __init pxa_init_dma(int num_ch);
f53f066c EM	42
1da177e4 LT	43	int pxa_request_dma (char *name,
1da177e4 LT	44	pxa_dma_prio prio,
0cd61b68	45	void (irq_handler)(int, void ),
1da177e4 LT	46	void *data);
	47
	48	void pxa_free_dma (int dma_ch);
	49
	50	#endif /* _ASM_ARCH_DMA_H */