/*
* arch/arm/include/asm/hardware/iomd.h
*
* Copyright (C) 1999 Russell King
*
* 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.
*
* This file contains information out the IOMD ASIC used in the
* Acorn RiscPC and subsequently integrated into the CLPS7500 chips.
*/
#ifndef __ASMARM_HARDWARE_IOMD_H
#define __ASMARM_HARDWARE_IOMD_H


#ifndef __ASSEMBLY__

/*
* We use __raw_base variants here so that we give the compiler the
* chance to keep IOC_BASE in a register.
*/
#define iomd_readb(off) __raw_readb(IOMD_BASE + (off))
#define iomd_readl(off) __raw_readl(IOMD_BASE + (off))
#define iomd_writeb(val,off) __raw_writeb(val, IOMD_BASE + (off))
#define iomd_writel(val,off) __raw_writel(val, IOMD_BASE + (off))

#endif

#define IOMD_CONTROL (0x000)
#define IOMD_KARTTX (0x004)
#define IOMD_KARTRX (0x004)
#define IOMD_KCTRL (0x008)

#define IOMD_IRQSTATA (0x010)
#define IOMD_IRQREQA (0x014)
#define IOMD_IRQCLRA (0x014)
#define IOMD_IRQMASKA (0x018)

#define IOMD_IRQSTATB (0x020)
#define IOMD_IRQREQB (0x024)
#define IOMD_IRQMASKB (0x028)

#define IOMD_FIQSTAT (0x030)
#define IOMD_FIQREQ (0x034)
#define IOMD_FIQMASK (0x038)

#define IOMD_T0CNTL (0x040)
#define IOMD_T0LTCHL (0x040)
#define IOMD_T0CNTH (0x044)
#define IOMD_T0LTCHH (0x044)
#define IOMD_T0GO (0x048)
#define IOMD_T0LATCH (0x04c)

#define IOMD_T1CNTL (0x050)
#define IOMD_T1LTCHL (0x050)
#define IOMD_T1CNTH (0x054)
#define IOMD_T1LTCHH (0x054)
#define IOMD_T1GO (0x058)
#define IOMD_T1LATCH (0x05c)

#define IOMD_ROMCR0 (0x080)
#define IOMD_ROMCR1 (0x084)
#ifdef CONFIG_ARCH_RPC
#define IOMD_DRAMCR (0x088)
#endif
#define IOMD_REFCR (0x08C)

#define IOMD_FSIZE (0x090)
#define IOMD_ID0 (0x094)
#define IOMD_ID1 (0x098)
#define IOMD_VERSION (0x09C)

#ifdef CONFIG_ARCH_RPC
#define IOMD_MOUSEX (0x0A0)
#define IOMD_MOUSEY (0x0A4)
#endif

#ifdef CONFIG_ARCH_RPC
#define IOMD_DMATCR (0x0C0)
#endif
#define IOMD_IOTCR (0x0C4)
#define IOMD_ECTCR (0x0C8)
#ifdef CONFIG_ARCH_RPC
#define IOMD_DMAEXT (0x0CC)
#endif

#ifdef CONFIG_ARCH_RPC
#define DMA_EXT_IO0 1
#define DMA_EXT_IO1 2
#define DMA_EXT_IO2 4
#define DMA_EXT_IO3 8

#define IOMD_IO0CURA (0x100)
#define IOMD_IO0ENDA (0x104)
#define IOMD_IO0CURB (0x108)
#define IOMD_IO0ENDB (0x10C)
#define IOMD_IO0CR (0x110)
#define IOMD_IO0ST (0x114)

#define IOMD_IO1CURA (0x120)
#define IOMD_IO1ENDA (0x124)
#define IOMD_IO1CURB (0x128)
#define IOMD_IO1ENDB (0x12C)
#define IOMD_IO1CR (0x130)
#define IOMD_IO1ST (0x134)

#define IOMD_IO2CURA (0x140)
#define IOMD_IO2ENDA (0x144)
#define IOMD_IO2CURB (0x148)
#define IOMD_IO2ENDB (0x14C)
#define IOMD_IO2CR (0x150)
#define IOMD_IO2ST (0x154)

#define IOMD_IO3CURA (0x160)
#define IOMD_IO3ENDA (0x164)
#define IOMD_IO3CURB (0x168)
#define IOMD_IO3ENDB (0x16C)
#define IOMD_IO3CR (0x170)
#define IOMD_IO3ST (0x174)
#endif

#define IOMD_SD0CURA (0x180)
#define IOMD_SD0ENDA (0x184)
#define IOMD_SD0CURB (0x188)
#define IOMD_SD0ENDB (0x18C)
#define IOMD_SD0CR (0x190)
#define IOMD_SD0ST (0x194)

#ifdef CONFIG_ARCH_RPC
#define IOMD_SD1CURA (0x1A0)
#define IOMD_SD1ENDA (0x1A4)
#define IOMD_SD1CURB (0x1A8)
#define IOMD_SD1ENDB (0x1AC)
#define IOMD_SD1CR (0x1B0)
#define IOMD_SD1ST (0x1B4)
#endif

#define IOMD_CURSCUR (0x1C0)
#define IOMD_CURSINIT (0x1C4)

#define IOMD_VIDCUR (0x1D0)
#define IOMD_VIDEND (0x1D4)
#define IOMD_VIDSTART (0x1D8)
#define IOMD_VIDINIT (0x1DC)
#define IOMD_VIDCR (0x1E0)

#define IOMD_DMASTAT (0x1F0)
#define IOMD_DMAREQ (0x1F4)
#define IOMD_DMAMASK (0x1F8)

#define DMA_END_S (1 << 31)
#define DMA_END_L (1 << 30)

#define DMA_CR_C 0x80
#define DMA_CR_D 0x40
#define DMA_CR_E 0x20

#define DMA_ST_OFL 4
#define DMA_ST_INT 2
#define DMA_ST_AB 1

/*
* DMA (MEMC) compatibility
*/
#define HALF_SAM vram_half_sam
#define VDMA_ALIGNMENT (HALF_SAM * 2)
#define VDMA_XFERSIZE (HALF_SAM)
#define VDMA_INIT IOMD_VIDINIT
#define VDMA_START IOMD_VIDSTART
#define VDMA_END IOMD_VIDEND

#ifndef __ASSEMBLY__
extern unsigned int vram_half_sam;
#define video_set_dma(start,end,offset) \
do { \
outl (SCREEN_START + start, VDMA_START); \
outl (SCREEN_START + end - VDMA_XFERSIZE, VDMA_END); \
if (offset >= end - VDMA_XFERSIZE) \
offset |= 0x40000000; \
outl (SCREEN_START + offset, VDMA_INIT); \
} while (0)
#endif

#endif