1/* SPDX-License-Identifier: GPL-2.0 2 * 3 * SH4 CPU-specific DMA definitions, used by both DMA drivers 4 * 5 * Copyright (C) 2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de> 6 */ 7#ifndef CPU_DMA_REGISTER_H 8#define CPU_DMA_REGISTER_H 9 10/* SH7751/7760/7780 DMA IRQ sources */ 11 12#ifdef CONFIG_CPU_SH4A 13 14#define DMAOR_INIT DMAOR_DME 15 16#if defined(CONFIG_CPU_SUBTYPE_SH7343) 17#define CHCR_TS_LOW_MASK 0x00000018 18#define CHCR_TS_LOW_SHIFT 3 19#define CHCR_TS_HIGH_MASK 0 20#define CHCR_TS_HIGH_SHIFT 0 21#elif defined(CONFIG_CPU_SUBTYPE_SH7722) || \ 22 defined(CONFIG_CPU_SUBTYPE_SH7723) || \ 23 defined(CONFIG_CPU_SUBTYPE_SH7724) || \ 24 defined(CONFIG_CPU_SUBTYPE_SH7730) || \ 25 defined(CONFIG_CPU_SUBTYPE_SH7786) 26#define CHCR_TS_LOW_MASK 0x00000018 27#define CHCR_TS_LOW_SHIFT 3 28#define CHCR_TS_HIGH_MASK 0x00300000 29#define CHCR_TS_HIGH_SHIFT (20 - 2) /* 2 bits for shifted low TS */ 30#elif defined(CONFIG_CPU_SUBTYPE_SH7757) || \ 31 defined(CONFIG_CPU_SUBTYPE_SH7763) || \ 32 defined(CONFIG_CPU_SUBTYPE_SH7780) || \ 33 defined(CONFIG_CPU_SUBTYPE_SH7785) 34#define CHCR_TS_LOW_MASK 0x00000018 35#define CHCR_TS_LOW_SHIFT 3 36#define CHCR_TS_HIGH_MASK 0x00100000 37#define CHCR_TS_HIGH_SHIFT (20 - 2) /* 2 bits for shifted low TS */ 38#endif 39 40/* Transmit sizes and respective CHCR register values */ 41enum { 42 XMIT_SZ_8BIT = 0, 43 XMIT_SZ_16BIT = 1, 44 XMIT_SZ_32BIT = 2, 45 XMIT_SZ_64BIT = 7, 46 XMIT_SZ_128BIT = 3, 47 XMIT_SZ_256BIT = 4, 48 XMIT_SZ_128BIT_BLK = 0xb, 49 XMIT_SZ_256BIT_BLK = 0xc, 50}; 51 52/* log2(size / 8) - used to calculate number of transfers */ 53#define TS_SHIFT { \ 54 [XMIT_SZ_8BIT] = 0, \ 55 [XMIT_SZ_16BIT] = 1, \ 56 [XMIT_SZ_32BIT] = 2, \ 57 [XMIT_SZ_64BIT] = 3, \ 58 [XMIT_SZ_128BIT] = 4, \ 59 [XMIT_SZ_256BIT] = 5, \ 60 [XMIT_SZ_128BIT_BLK] = 4, \ 61 [XMIT_SZ_256BIT_BLK] = 5, \ 62} 63 64#define TS_INDEX2VAL(i) ((((i) & 3) << CHCR_TS_LOW_SHIFT) | \ 65 (((i) & 0xc) << CHCR_TS_HIGH_SHIFT)) 66 67#else /* CONFIG_CPU_SH4A */ 68 69#define DMAOR_INIT (0x8000 | DMAOR_DME) 70 71#define CHCR_TS_LOW_MASK 0x70 72#define CHCR_TS_LOW_SHIFT 4 73#define CHCR_TS_HIGH_MASK 0 74#define CHCR_TS_HIGH_SHIFT 0 75 76/* Transmit sizes and respective CHCR register values */ 77enum { 78 XMIT_SZ_8BIT = 1, 79 XMIT_SZ_16BIT = 2, 80 XMIT_SZ_32BIT = 3, 81 XMIT_SZ_64BIT = 0, 82 XMIT_SZ_256BIT = 4, 83}; 84 85/* log2(size / 8) - used to calculate number of transfers */ 86#define TS_SHIFT { \ 87 [XMIT_SZ_8BIT] = 0, \ 88 [XMIT_SZ_16BIT] = 1, \ 89 [XMIT_SZ_32BIT] = 2, \ 90 [XMIT_SZ_64BIT] = 3, \ 91 [XMIT_SZ_256BIT] = 5, \ 92} 93 94#define TS_INDEX2VAL(i) (((i) & 7) << CHCR_TS_LOW_SHIFT) 95 96#endif /* CONFIG_CPU_SH4A */ 97 98#endif 99