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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/m68k/include/asm/amigayle.h
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/*

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** asm-m68k/amigayle.h -- This header defines the registers of the gayle chip

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**                        found on the Amiga 1200

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**                        This information was found by disassembling card.resource,

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**                        so the definitions may not be 100% correct

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**                        anyone has an official doc ?

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**

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** Copyright 1997 by Alain Malek

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**

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** This file is subject to the terms and conditions of the GNU General Public

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** License.  See the file COPYING in the main directory of this archive

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** for more details.

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**

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** Created: 11/28/97 by Alain Malek

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*/

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#ifndef _M68K_AMIGAYLE_H_

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#define _M68K_AMIGAYLE_H_

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#include <linux/types.h>

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#include <asm/amigahw.h>

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/* memory layout */

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#define GAYLE_RAM		(0x600000+zTwoBase)

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#define GAYLE_RAMSIZE		(0x400000)

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#define GAYLE_ATTRIBUTE		(0xa00000+zTwoBase)

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#define GAYLE_ATTRIBUTESIZE	(0x020000)

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#define GAYLE_IO		(0xa20000+zTwoBase)	/* 16bit and even 8bit registers */

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#define GAYLE_IOSIZE		(0x010000)

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#define GAYLE_IO_8BITODD	(0xa30000+zTwoBase)	/* odd 8bit registers */

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/* offset for accessing odd IO registers */

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#define GAYLE_ODD		(GAYLE_IO_8BITODD-GAYLE_IO-1)

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/* GAYLE registers */

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struct GAYLE {

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	u_char cardstatus;

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	u_char pad0[0x1000-1];

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	u_char intreq;

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	u_char pad1[0x1000-1];

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	u_char inten;

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	u_char pad2[0x1000-1];

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	u_char config;

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	u_char pad3[0x1000-1];

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};

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

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#define GAYLE_RESET	(0xa40000)	/* write 0x00 to start reset,

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                                           read 1 byte to stop reset */

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

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#define gayle_reset (*(volatile u_char *)(zTwoBase+GAYLE_RESET))

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

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#if 0

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#define gayle_inb(a) readb( GAYLE_IO+(a)+(((a)&1)*GAYLE_ODD) )

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#define gayle_outb(v,a) writeb( v, GAYLE_IO+(a)+(((a)&1)*GAYLE_ODD) )

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#define gayle_inw(a) readw( GAYLE_IO+(a) )

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#define gayle_outw(v,a) writew( v, GAYLE_IO+(a) )

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#endif

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/* GAYLE_CARDSTATUS bit def */

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#define GAYLE_CS_CCDET		0x40	/* credit card detect */

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#define GAYLE_CS_BVD1		0x20	/* battery voltage detect 1 */

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#define GAYLE_CS_SC		0x20	/* credit card status change */

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#define GAYLE_CS_BVD2		0x10	/* battery voltage detect 2 */

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#define GAYLE_CS_DA		0x10	/* digital audio */

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#define GAYLE_CS_WR		0x08	/* write enable (1 == enabled) */

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#define GAYLE_CS_BSY		0x04	/* credit card busy */

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#define GAYLE_CS_IRQ		0x04	/* interrupt request */

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/* GAYLE_IRQ bit def */

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#define GAYLE_IRQ_IDE		0x80

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#define GAYLE_IRQ_CCDET		0x40

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#define GAYLE_IRQ_BVD1		0x20

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#define GAYLE_IRQ_SC		0x20

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#define GAYLE_IRQ_BVD2		0x10

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#define GAYLE_IRQ_DA		0x10

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#define GAYLE_IRQ_WR		0x08

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#define GAYLE_IRQ_BSY		0x04

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#define GAYLE_IRQ_IRQ		0x04

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#define GAYLE_IRQ_IDEACK1	0x02

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#define GAYLE_IRQ_IDEACK0	0x01

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/* GAYLE_CONFIG bit def

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

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#define GAYLE_CFG_0V		0x00

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#define GAYLE_CFG_5V		0x01

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#define GAYLE_CFG_12V		0x02

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#define GAYLE_CFG_100NS		0x08

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#define GAYLE_CFG_150NS		0x04

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#define GAYLE_CFG_250NS		0x00

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#define GAYLE_CFG_720NS		0x0c

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struct gayle_ide_platform_data {

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	unsigned long base;

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	unsigned long irqport;

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	int explicit_ack;	/* A1200 IDE needs explicit ack */

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};

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

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