amigayle.h

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/*
** asm-m68k/amigayle.h -- This header defines the registers of the gayle chip
**                        found on the Amiga 1200
**                        This information was found by disassembling card.resource,
**                        so the definitions may not be 100% correct
**                        anyone has an official doc ?
**
** Copyright 1997 by Alain Malek
**
** This file is subject to the terms and conditions of the GNU General Public
** License.  See the file COPYING in the main directory of this archive
** for more details.
**
** Created: 11/28/97 by Alain Malek
*/

#ifndef _M68K_AMIGAYLE_H_
#define _M68K_AMIGAYLE_H_

#include <linux/types.h>
#include <asm/amigahw.h>

/* memory layout */

#define GAYLE_RAM       (0x600000+zTwoBase)
#define GAYLE_RAMSIZE       (0x400000)
#define GAYLE_ATTRIBUTE     (0xa00000+zTwoBase)
#define GAYLE_ATTRIBUTESIZE (0x020000)
#define GAYLE_IO        (0xa20000+zTwoBase) /* 16bit and even 8bit registers */
#define GAYLE_IOSIZE        (0x010000)
#define GAYLE_IO_8BITODD    (0xa30000+zTwoBase) /* odd 8bit registers */

/* offset for accessing odd IO registers */
#define GAYLE_ODD       (GAYLE_IO_8BITODD-GAYLE_IO-1)

/* GAYLE registers */

struct GAYLE {
    u_char cardstatus;
    u_char pad0[0x1000-1];

    u_char intreq;
    u_char pad1[0x1000-1];

    u_char inten;
    u_char pad2[0x1000-1];

    u_char config;
    u_char pad3[0x1000-1];
};

#define GAYLE_ADDRESS   (0xda8000)  /* gayle main registers base address */

#define GAYLE_RESET (0xa40000)  /* write 0x00 to start reset,
                                           read 1 byte to stop reset */

#define gayle (*(volatile struct GAYLE *)(zTwoBase+GAYLE_ADDRESS))
#define gayle_reset (*(volatile u_char *)(zTwoBase+GAYLE_RESET))

#define gayle_attribute ((volatile u_char *)(GAYLE_ATTRIBUTE))

#if 0
#define gayle_inb(a) readb( GAYLE_IO+(a)+(((a)&1)*GAYLE_ODD) )
#define gayle_outb(v,a) writeb( v, GAYLE_IO+(a)+(((a)&1)*GAYLE_ODD) )

#define gayle_inw(a) readw( GAYLE_IO+(a) )
#define gayle_outw(v,a) writew( v, GAYLE_IO+(a) )
#endif

/* GAYLE_CARDSTATUS bit def */

#define GAYLE_CS_CCDET      0x40    /* credit card detect */
#define GAYLE_CS_BVD1       0x20    /* battery voltage detect 1 */
#define GAYLE_CS_SC     0x20    /* credit card status change */
#define GAYLE_CS_BVD2       0x10    /* battery voltage detect 2 */
#define GAYLE_CS_DA     0x10    /* digital audio */
#define GAYLE_CS_WR     0x08    /* write enable (1 == enabled) */
#define GAYLE_CS_BSY        0x04    /* credit card busy */
#define GAYLE_CS_IRQ        0x04    /* interrupt request */

/* GAYLE_IRQ bit def */

#define GAYLE_IRQ_IDE       0x80
#define GAYLE_IRQ_CCDET     0x40
#define GAYLE_IRQ_BVD1      0x20
#define GAYLE_IRQ_SC        0x20
#define GAYLE_IRQ_BVD2      0x10
#define GAYLE_IRQ_DA        0x10
#define GAYLE_IRQ_WR        0x08
#define GAYLE_IRQ_BSY       0x04
#define GAYLE_IRQ_IRQ       0x04
#define GAYLE_IRQ_IDEACK1   0x02
#define GAYLE_IRQ_IDEACK0   0x01

/* GAYLE_CONFIG bit def
   (bit 0-1 for program voltage, bit 2-3 for access speed */

#define GAYLE_CFG_0V        0x00
#define GAYLE_CFG_5V        0x01
#define GAYLE_CFG_12V       0x02

#define GAYLE_CFG_100NS     0x08
#define GAYLE_CFG_150NS     0x04
#define GAYLE_CFG_250NS     0x00
#define GAYLE_CFG_720NS     0x0c

struct gayle_ide_platform_data {
    unsigned long base;
    unsigned long irqport;
    int explicit_ack;   /* A1200 IDE needs explicit ack */
};

#endif /* asm-m68k/amigayle.h */