linux-vybrid_public/arch/sh/include/cpu-sh3/cpu/dma.h

#ifndef __ASM_CPU_SH3_DMA_H
#define __ASM_CPU_SH3_DMA_H

#if defined(CONFIG_CPU_SUBTYPE_SH7720) || \
    defined(CONFIG_CPU_SUBTYPE_SH7721) || \
    defined(CONFIG_CPU_SUBTYPE_SH7710) || \
    defined(CONFIG_CPU_SUBTYPE_SH7712)
#define SH_DMAC_BASE0	0xa4010020
#else /* SH7705/06/07/09 */
#define SH_DMAC_BASE0	0xa4000020
#endif

#define DMTE0_IRQ	48
#define DMTE4_IRQ	76

/* Definitions for the SuperH DMAC */
#define TM_BURST	0x00000020
#define TS_8		0x00000000
#define TS_16		0x00000008
#define TS_32		0x00000010
#define TS_128		0x00000018

#define CHCR_TS_LOW_MASK	0x18
#define CHCR_TS_LOW_SHIFT	3
#define CHCR_TS_HIGH_MASK	0
#define CHCR_TS_HIGH_SHIFT	0

#define DMAOR_INIT	DMAOR_DME

/*
 * The SuperH DMAC supports a number of transmit sizes, we list them here,
 * with their respective values as they appear in the CHCR registers.
 */
enum {
	XMIT_SZ_8BIT,
	XMIT_SZ_16BIT,
	XMIT_SZ_32BIT,
	XMIT_SZ_128BIT,
};

#define TS_SHIFT {			\
	[XMIT_SZ_8BIT]		= 0,	\
	[XMIT_SZ_16BIT]		= 1,	\
	[XMIT_SZ_32BIT]		= 2,	\
	[XMIT_SZ_128BIT]	= 4,	\
}

#define TS_INDEX2VAL(i)	(((i) & 3) << CHCR_TS_LOW_SHIFT)

#endif /* __ASM_CPU_SH3_DMA_H */