arch/arm/include/asm/hardware/iomd.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  *  arch/arm/include/asm/hardware/iomd.h
   4  *
   5  *  Copyright (C) 1999 Russell King
   6  *
   7  *  This file contains information out the IOMD ASIC used in the
   8  *  Acorn RiscPC and subsequently integrated into the CLPS7500 chips.
   9  */
  10 #ifndef __ASMARM_HARDWARE_IOMD_H
  11 #define __ASMARM_HARDWARE_IOMD_H
  12
  13
  14 #ifndef __ASSEMBLY__
  15
  16 /*
  17  * We use __raw_base variants here so that we give the compiler the
  18  * chance to keep IOC_BASE in a register.
  19  */
  20 #define iomd_readb(off)         __raw_readb(IOMD_BASE + (off))
  21 #define iomd_readl(off)         __raw_readl(IOMD_BASE + (off))
  22 #define iomd_writeb(val,off)    __raw_writeb(val, IOMD_BASE + (off))
  23 #define iomd_writel(val,off)    __raw_writel(val, IOMD_BASE + (off))
  24
  25 #endif
  26
  27 #define IOMD_CONTROL    (0x000)
  28 #define IOMD_KARTTX     (0x004)
  29 #define IOMD_KARTRX     (0x004)
  30 #define IOMD_KCTRL      (0x008)
  31
  32 #define IOMD_IRQSTATA   (0x010)
  33 #define IOMD_IRQREQA    (0x014)
  34 #define IOMD_IRQCLRA    (0x014)
  35 #define IOMD_IRQMASKA   (0x018)
  36
  37 #define IOMD_IRQSTATB   (0x020)
  38 #define IOMD_IRQREQB    (0x024)
  39 #define IOMD_IRQMASKB   (0x028)
  40
  41 #define IOMD_FIQSTAT    (0x030)
  42 #define IOMD_FIQREQ     (0x034)
  43 #define IOMD_FIQMASK    (0x038)
  44
  45 #define IOMD_T0CNTL     (0x040)
  46 #define IOMD_T0LTCHL    (0x040)
  47 #define IOMD_T0CNTH     (0x044)
  48 #define IOMD_T0LTCHH    (0x044)
  49 #define IOMD_T0GO       (0x048)
  50 #define IOMD_T0LATCH    (0x04c)
  51
  52 #define IOMD_T1CNTL     (0x050)
  53 #define IOMD_T1LTCHL    (0x050)
  54 #define IOMD_T1CNTH     (0x054)
  55 #define IOMD_T1LTCHH    (0x054)
  56 #define IOMD_T1GO       (0x058)
  57 #define IOMD_T1LATCH    (0x05c)
  58
  59 #define IOMD_ROMCR0     (0x080)
  60 #define IOMD_ROMCR1     (0x084)
  61 #ifdef CONFIG_ARCH_RPC
  62 #define IOMD_DRAMCR     (0x088)
  63 #endif
  64 #define IOMD_REFCR      (0x08C)
  65
  66 #define IOMD_FSIZE      (0x090)
  67 #define IOMD_ID0        (0x094)
  68 #define IOMD_ID1        (0x098)
  69 #define IOMD_VERSION    (0x09C)
  70
  71 #ifdef CONFIG_ARCH_RPC
  72 #define IOMD_MOUSEX     (0x0A0)
  73 #define IOMD_MOUSEY     (0x0A4)
  74 #endif
  75
  76 #ifdef CONFIG_ARCH_RPC
  77 #define IOMD_DMATCR     (0x0C0)
  78 #endif
  79 #define IOMD_IOTCR      (0x0C4)
  80 #define IOMD_ECTCR      (0x0C8)
  81 #ifdef CONFIG_ARCH_RPC
  82 #define IOMD_DMAEXT     (0x0CC)
  83 #endif
  84
  85 #ifdef CONFIG_ARCH_RPC
  86 #define DMA_EXT_IO0     1
  87 #define DMA_EXT_IO1     2
  88 #define DMA_EXT_IO2     4
  89 #define DMA_EXT_IO3     8
  90
  91 #define IOMD_IO0CURA    (0x100)
  92 #define IOMD_IO0ENDA    (0x104)
  93 #define IOMD_IO0CURB    (0x108)
  94 #define IOMD_IO0ENDB    (0x10C)
  95 #define IOMD_IO0CR      (0x110)
  96 #define IOMD_IO0ST      (0x114)
  97
  98 #define IOMD_IO1CURA    (0x120)
  99 #define IOMD_IO1ENDA    (0x124)
 100 #define IOMD_IO1CURB    (0x128)
 101 #define IOMD_IO1ENDB    (0x12C)
 102 #define IOMD_IO1CR      (0x130)
 103 #define IOMD_IO1ST      (0x134)
 104
 105 #define IOMD_IO2CURA    (0x140)
 106 #define IOMD_IO2ENDA    (0x144)
 107 #define IOMD_IO2CURB    (0x148)
 108 #define IOMD_IO2ENDB    (0x14C)
 109 #define IOMD_IO2CR      (0x150)
 110 #define IOMD_IO2ST      (0x154)
 111
 112 #define IOMD_IO3CURA    (0x160)
 113 #define IOMD_IO3ENDA    (0x164)
 114 #define IOMD_IO3CURB    (0x168)
 115 #define IOMD_IO3ENDB    (0x16C)
 116 #define IOMD_IO3CR      (0x170)
 117 #define IOMD_IO3ST      (0x174)
 118 #endif
 119
 120 #define IOMD_SD0CURA    (0x180)
 121 #define IOMD_SD0ENDA    (0x184)
 122 #define IOMD_SD0CURB    (0x188)
 123 #define IOMD_SD0ENDB    (0x18C)
 124 #define IOMD_SD0CR      (0x190)
 125 #define IOMD_SD0ST      (0x194)
 126
 127 #ifdef CONFIG_ARCH_RPC
 128 #define IOMD_SD1CURA    (0x1A0)
 129 #define IOMD_SD1ENDA    (0x1A4)
 130 #define IOMD_SD1CURB    (0x1A8)
 131 #define IOMD_SD1ENDB    (0x1AC)
 132 #define IOMD_SD1CR      (0x1B0)
 133 #define IOMD_SD1ST      (0x1B4)
 134 #endif
 135
 136 #define IOMD_CURSCUR    (0x1C0)
 137 #define IOMD_CURSINIT   (0x1C4)
 138
 139 #define IOMD_VIDCUR     (0x1D0)
 140 #define IOMD_VIDEND     (0x1D4)
 141 #define IOMD_VIDSTART   (0x1D8)
 142 #define IOMD_VIDINIT    (0x1DC)
 143 #define IOMD_VIDCR      (0x1E0)
 144
 145 #define IOMD_DMASTAT    (0x1F0)
 146 #define IOMD_DMAREQ     (0x1F4)
 147 #define IOMD_DMAMASK    (0x1F8)
 148
 149 #define DMA_END_S       (1 << 31)
 150 #define DMA_END_L       (1 << 30)
 151
 152 #define DMA_CR_C        0x80
 153 #define DMA_CR_D        0x40
 154 #define DMA_CR_E        0x20
 155
 156 #define DMA_ST_OFL      4
 157 #define DMA_ST_INT      2
 158 #define DMA_ST_AB       1
 159
 160 /*
 161  * DMA (MEMC) compatibility
 162  */
 163 #define HALF_SAM        vram_half_sam
 164 #define VDMA_ALIGNMENT  (HALF_SAM * 2)
 165 #define VDMA_XFERSIZE   (HALF_SAM)
 166 #define VDMA_INIT       IOMD_VIDINIT
 167 #define VDMA_START      IOMD_VIDSTART
 168 #define VDMA_END        IOMD_VIDEND
 169
 170 #ifndef __ASSEMBLY__
 171 extern unsigned int vram_half_sam;
 172 #define video_set_dma(start,end,offset)                         \
 173 do {                                                            \
 174         outl (SCREEN_START + start, VDMA_START);                \
 175         outl (SCREEN_START + end - VDMA_XFERSIZE, VDMA_END);    \
 176         if (offset >= end - VDMA_XFERSIZE)                      \
 177                 offset |= 0x40000000;                           \
 178         outl (SCREEN_START + offset, VDMA_INIT);                \
 179 } while (0)
 180 #endif
 181
 182 #endif