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/* SPDX-License-Identifier: GPL-2.0
*
* SH4 CPU-specific DMA definitions, used by both DMA drivers
*
* Copyright (C) 2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
*/
#ifndef CPU_DMA_REGISTER_H
#define CPU_DMA_REGISTER_H
/* SH7751/7760/7780 DMA IRQ sources */
#ifdef CONFIG_CPU_SH4A
#define DMAOR_INIT DMAOR_DME
#if defined(CONFIG_CPU_SUBTYPE_SH7343)
#define CHCR_TS_LOW_MASK 0x00000018
#define CHCR_TS_LOW_SHIFT 3
#define CHCR_TS_HIGH_MASK 0
#define CHCR_TS_HIGH_SHIFT 0
#elif defined(CONFIG_CPU_SUBTYPE_SH7722) || \
defined(CONFIG_CPU_SUBTYPE_SH7723) || \
defined(CONFIG_CPU_SUBTYPE_SH7724) || \
defined(CONFIG_CPU_SUBTYPE_SH7730) || \
defined(CONFIG_CPU_SUBTYPE_SH7786)
#define CHCR_TS_LOW_MASK 0x00000018
#define CHCR_TS_LOW_SHIFT 3
#define CHCR_TS_HIGH_MASK 0x00300000
#define CHCR_TS_HIGH_SHIFT (20 - 2) /* 2 bits for shifted low TS */
#elif defined(CONFIG_CPU_SUBTYPE_SH7757) || \
defined(CONFIG_CPU_SUBTYPE_SH7763) || \
defined(CONFIG_CPU_SUBTYPE_SH7780) || \
defined(CONFIG_CPU_SUBTYPE_SH7785)
#define CHCR_TS_LOW_MASK 0x00000018
#define CHCR_TS_LOW_SHIFT 3
#define CHCR_TS_HIGH_MASK 0x00100000
#define CHCR_TS_HIGH_SHIFT (20 - 2) /* 2 bits for shifted low TS */
#endif
/* Transmit sizes and respective CHCR register values */
enum {
XMIT_SZ_8BIT = 0,
XMIT_SZ_16BIT = 1,
XMIT_SZ_32BIT = 2,
XMIT_SZ_64BIT = 7,
XMIT_SZ_128BIT = 3,
XMIT_SZ_256BIT = 4,
XMIT_SZ_128BIT_BLK = 0xb,
XMIT_SZ_256BIT_BLK = 0xc,
};
/* log2(size / 8) - used to calculate number of transfers */
#define TS_SHIFT { \
[XMIT_SZ_8BIT] = 0, \
[XMIT_SZ_16BIT] = 1, \
[XMIT_SZ_32BIT] = 2, \
[XMIT_SZ_64BIT] = 3, \
[XMIT_SZ_128BIT] = 4, \
[XMIT_SZ_256BIT] = 5, \
[XMIT_SZ_128BIT_BLK] = 4, \
[XMIT_SZ_256BIT_BLK] = 5, \
}
#define TS_INDEX2VAL(i) ((((i) & 3) << CHCR_TS_LOW_SHIFT) | \
(((i) & 0xc) << CHCR_TS_HIGH_SHIFT))
#else /* CONFIG_CPU_SH4A */
#define DMAOR_INIT (0x8000 | DMAOR_DME)
#define CHCR_TS_LOW_MASK 0x70
#define CHCR_TS_LOW_SHIFT 4
#define CHCR_TS_HIGH_MASK 0
#define CHCR_TS_HIGH_SHIFT 0
/* Transmit sizes and respective CHCR register values */
enum {
XMIT_SZ_8BIT = 1,
XMIT_SZ_16BIT = 2,
XMIT_SZ_32BIT = 3,
XMIT_SZ_64BIT = 0,
XMIT_SZ_256BIT = 4,
};
/* log2(size / 8) - used to calculate number of transfers */
#define TS_SHIFT { \
[XMIT_SZ_8BIT] = 0, \
[XMIT_SZ_16BIT] = 1, \
[XMIT_SZ_32BIT] = 2, \
[XMIT_SZ_64BIT] = 3, \
[XMIT_SZ_256BIT] = 5, \
}
#define TS_INDEX2VAL(i) (((i) & 7) << CHCR_TS_LOW_SHIFT)
#endif /* CONFIG_CPU_SH4A */
#endif
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