asic.h

早期freebsd实现

/*-
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * The Mach Operating System project at Carnegie-Mellon University,
 * Ralph Campbell and Rick Macklem.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)asic.h	8.1 (Berkeley) 6/10/93
 */

/* 
 * Mach Operating System
 * Copyright (c) 1991,1990,1989 Carnegie Mellon University
 * All Rights Reserved.
 * 
 * Permission to use, copy, modify and distribute this software and
 * its documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 
 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  [e-mail]
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie the
 * rights to redistribute these changes.
 */
/*
 * HISTORY
 * $Log:	asic.h,v $
 * Revision 2.2  92/03/02  18:33:32  rpd
 * 	Created, from the DEC specs:
 * 	"IO Controller ASIC Functional Specifications"
 * 	Workstation Systems Engineering, Palo Alto, CA. Feb 1, 1991.
 * 	[92/01/17            af]
 * 
 */
/*
 *	File: asic.h
 * 	Author: Alessandro Forin, Carnegie Mellon University
 *	Date:	1/92
 *
 *	Definitions specific to the IO Controller ASIC, used
 *	on 3min and MAXine motherboards.
 */

#ifndef	MIPS_ASIC_H
#define	MIPS_ASIC_H 1

/*
 * Slot definitions
 */

#define	ASIC_SLOT_0_START	0x000000
#define	ASIC_SLOT_1_START	0x040000
#define	ASIC_SLOT_2_START	0x080000
#define	ASIC_SLOT_3_START	0x0c0000
#define	ASIC_SLOT_4_START	0x100000
#define	ASIC_SLOT_5_START	0x140000
#define	ASIC_SLOT_6_START	0x180000
#define	ASIC_SLOT_7_START	0x1c0000
#define	ASIC_SLOT_8_START	0x200000
#define	ASIC_SLOT_9_START	0x240000
#define	ASIC_SLOT_10_START	0x280000
#define	ASIC_SLOT_11_START	0x2c0000
#define	ASIC_SLOT_12_START	0x300000
#define	ASIC_SLOT_13_START	0x340000
#define	ASIC_SLOT_14_START	0x380000
#define	ASIC_SLOT_15_START	0x3c0000
#define	ASIC_SLOTS_END		0x3fffff

/*
 *  Register offsets (slot 1)
 */

#define	ASIC_SCSI_DMAPTR	ASIC_SLOT_1_START+0x000
#define	ASIC_SCSI_NEXTPTR	ASIC_SLOT_1_START+0x010
#define	ASIC_LANCE_DMAPTR	ASIC_SLOT_1_START+0x020
#define	ASIC_SCC_T1_DMAPTR	ASIC_SLOT_1_START+0x030
#define	ASIC_SCC_R1_DMAPTR	ASIC_SLOT_1_START+0x040
#define	ASIC_SCC_T2_DMAPTR	ASIC_SLOT_1_START+0x050
#define	ASIC_SCC_R2_DMAPTR	ASIC_SLOT_1_START+0x060
#define	ASIC_FLOPPY_DMAPTR	ASIC_SLOT_1_START+0x070
#define	ASIC_ISDN_X_DMAPTR	ASIC_SLOT_1_START+0x080
#define	ASIC_ISDN_X_NEXTPTR	ASIC_SLOT_1_START+0x090
#define	ASIC_ISDN_R_DMAPTR	ASIC_SLOT_1_START+0x0a0
#define	ASIC_ISDN_R_NEXTPTR	ASIC_SLOT_1_START+0x0b0
#define	ASIC_BUFF0		ASIC_SLOT_1_START+0x0c0
#define	ASIC_BUFF1		ASIC_SLOT_1_START+0x0d0
#define	ASIC_BUFF2		ASIC_SLOT_1_START+0x0e0
#define	ASIC_BUFF3		ASIC_SLOT_1_START+0x0f0
#define	ASIC_CSR		ASIC_SLOT_1_START+0x100
#define	ASIC_INTR		ASIC_SLOT_1_START+0x110
#define	ASIC_IMSK		ASIC_SLOT_1_START+0x120
#define	ASIC_CURADDR		ASIC_SLOT_1_START+0x130
#define	ASIC_ISDN_X_DATA	ASIC_SLOT_1_START+0x140
#define	ASIC_ISDN_R_DATA	ASIC_SLOT_1_START+0x150
#define	ASIC_LANCE_DECODE	ASIC_SLOT_1_START+0x160
#define	ASIC_SCSI_DECODE	ASIC_SLOT_1_START+0x170
#define	ASIC_SCC0_DECODE	ASIC_SLOT_1_START+0x180
#define	ASIC_SCC1_DECODE	ASIC_SLOT_1_START+0x190
#define	ASIC_FLOPPY_DECODE	ASIC_SLOT_1_START+0x1a0
#define	ASIC_SCSI_SCR		ASIC_SLOT_1_START+0x1b0
#define	ASIC_SCSI_SDR0		ASIC_SLOT_1_START+0x1c0
#define	ASIC_SCSI_SDR1		ASIC_SLOT_1_START+0x1d0

/* system Status and Control register (SSR) */

#define ASIC_CSR_DMAEN_T1	0x80000000	/* rw */
#define ASIC_CSR_DMAEN_R1	0x40000000	/* rw */
#define ASIC_CSR_DMAEN_T2	0x20000000	/* rw */
#define ASIC_CSR_DMAEN_R2	0x10000000	/* rw */
#define ASIC_CSR_xxx		0x0f800000	/* reserved */
#define ASIC_CSR_FLOPPY_DIR	0x00400000	/* rw */
#define ASIC_CSR_DMAEN_FLOPPY	0x00200000	/* rw */
#define ASIC_CSR_DMAEN_ISDN_T	0x00100000	/* rw */
#define ASIC_CSR_DMAEN_ISDN_R	0x00080000	/* rw */
#define ASIC_CSR_SCSI_DIR	0x00040000	/* rw */
#define ASIC_CSR_DMAEN_SCSI	0x00020000	/* rw */
#define ASIC_CSR_DMAEN_LANCE	0x00010000	/* rw */
/* low 16 bits are rw gp outputs */

/* system Interrupt register (and interrupt mask register) */

#define	ASIC_INTR_T1_PAGE_END	0x80000000	/* rz */
#define	ASIC_INTR_T1_READ_E	0x40000000	/* rz */
#define	ASIC_INTR_R1_HALF_PAGE	0x20000000	/* rz */
#define	ASIC_INTR_R1_DMA_OVRUN	0x10000000	/* rz */
#define	ASIC_INTR_T2_PAGE_END	0x08000000	/* rz */
#define	ASIC_INTR_T2_READ_E	0x04000000	/* rz */
#define	ASIC_INTR_R2_HALF_PAGE	0x02000000	/* rz */
#define	ASIC_INTR_R2_DMA_OVRUN	0x01000000	/* rz */
#define	ASIC_INTR_FLOPPY_DMA_E	0x00800000	/* rz */
#define	ASIC_INTR_ISDN_PTR_LOAD	0x00400000	/* rz */
#define	ASIC_INTR_ISDN_OVRUN	0x00200000	/* rz */
#define	ASIC_INTR_ISDN_READ_E	0x00100000	/* rz */
#define	ASIC_INTR_SCSI_PTR_LOAD	0x00080000	/* rz */
#define	ASIC_INTR_SCSI_OVRUN	0x00040000	/* rz */
#define	ASIC_INTR_SCSI_READ_E	0x00020000	/* rz */
#define	ASIC_INTR_LANCE_READ_E	0x00010000	/* rz */
/* low 16 are gp interrupts */

/* DMA pointer registers (SCSI, Comm, ...) */

#define	ASIC_DMAPTR_MASK	0xffffffe0
#define	ASIC_DMAPTR_SHIFT	5
#	define	ASIC_DMAPTR_SET(reg,val)	\
			(reg) = (((val)<<ASIC_DMAPTR_SHIFT)&ASIC_DMAPTR_MASK)
#	define	ASIC_DMAPTR_GET(reg,val)	\
			(val) = (((reg)&ASIC_DMAPTR_MASK)>>ASIC_DMAPTR_SHIFT)
#define	ASIC_DMA_ADDR(p)	(((unsigned)p) << (5-2))

/* For the LANCE DMA pointer register initialization the above suffices */

/* More SCSI DMA registers */

#define	ASIC_SCR_STATUS		0x00000004
#define	ASIC_SCR_WORD		0x00000003

/* Various Decode registers */

#define	ASIC_DECODE_HW_ADDRESS	0x000003f0
#define	ASIC_DECODE_CHIP_SELECT	0x0000000f

/*
 * Asic register addresses at offset from base.
 */
#define	ASIC_REG_SCSI_DMAPTR(base)	((base) + ASIC_SCSI_DMAPTR)
#define	ASIC_REG_SCSI_DMANPTR(base)	((base) + ASIC_SCSI_NEXTPTR)
#define	ASIC_REG_LANCE_DMAPTR(base)	((base) + ASIC_LANCE_DMAPTR)
#define	ASIC_REG_SCC_T1_DMAPTR(base)	((base) + ASIC_SCC_T1_DMAPTR)
#define	ASIC_REG_SCC_R1_DMAPTR(base)	((base) + ASIC_SCC_R1_DMAPTR)
#define	ASIC_REG_SCC_T2_DMAPTR(base)	((base) + ASIC_SCC_T2_DMAPTR)
#define	ASIC_REG_SCC_R2_DMAPTR(base)	((base) + ASIC_SCC_R2_DMAPTR)
#define	ASIC_REG_FLOPPY_DMAPTR(base)	((base) + ASIC_FLOPPY_DMAPTR)
#define	ASIC_REG_ISDN_X_DMAPTR(base)	((base) + ASIC_ISDN_X_DMAPTR)
#define	ASIC_REG_ISDN_X_NEXTPTR(base)	((base) + ASIC_ISDN_X_NEXTPTR)
#define	ASIC_REG_ISDN_R_DMAPTR(base)	((base) + ASIC_ISDN_R_DMAPTR)
#define	ASIC_REG_ISDN_R_NEXTPTR(base)	((base) + ASIC_ISDN_R_NEXTPTR)
#define	ASIC_REG_BUFF0(base)		((base) + ASIC_BUFF0)
#define	ASIC_REG_BUFF1(base)		((base) + ASIC_BUFF1)
#define	ASIC_REG_BUFF2(base)		((base) + ASIC_BUFF2)
#define	ASIC_REG_BUFF3(base)		((base) + ASIC_BUFF3)
#define	ASIC_REG_CSR(base)		((base) + ASIC_CSR)
#define	ASIC_REG_INTR(base)		((base) + ASIC_INTR)
#define	ASIC_REG_IMSK(base)		((base) + ASIC_IMSK)
#define	ASIC_REG_CURADDR(base)		((base) + ASIC_CURADDR)
#define	ASIC_REG_ISDN_X_DATA(base)	((base) + ASIC_ISDN_X_DATA)
#define	ASIC_REG_ISDN_R_DATA(base)	((base) + ASIC_ISDN_R_DATA)
#define	ASIC_REG_LANCE_DECODE(base)	((base) + ASIC_LANCE_DECODE)
#define	ASIC_REG_SCSI_DECODE(base)	((base) + ASIC_SCSI_DECODE)
#define	ASIC_REG_SCC0_DECODE(base)	((base) + ASIC_SCC0_DECODE)
#define	ASIC_REG_SCC1_DECODE(base)	((base) + ASIC_SCC1_DECODE)
#define	ASIC_REG_FLOPPY_DECODE(base)	((base) + ASIC_FLOPPY_DECODE)
#define	ASIC_REG_SCSI_SCR(base)		((base) + ASIC_SCSI_SCR)
#define	ASIC_REG_SCSI_SDR0(base)	((base) + ASIC_SCSI_SDR0)
#define	ASIC_REG_SCSI_SDR1(base)	((base) + ASIC_SCSI_SDR1)

/*
 * And slot assignments.
 */
#define	ASIC_SYS_ETHER_ADDRESS(base)	((base) + ASIC_SLOT_2_START)
#define	ASIC_SYS_LANCE(base)		((base) + ASIC_SLOT_3_START)
#endif	/* MIPS_ASIC_H */