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- /*
- * arch/arm/mach-pxa/include/mach/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 */
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