text: /* 	$NetBSD: i82093reg.h,v 1.1 2003/02/26 21:26:10 fvdl Exp $ */
  
  /*-
   * Copyright (c) 2000 The NetBSD Foundation, Inc.
   * All rights reserved.
   *
   * This code is derived from software contributed to The NetBSD Foundation
   * by RedBack Networks Inc.
   *
   * Author: Bill Sommerfeld
   *
   * 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 NetBSD
   *        Foundation, Inc. and its contributors.
   * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
   */
  
  /*
   * Typically, the first apic lives here.
   */
  #define IOAPIC_BASE_DEFAULT	0xfec00000
  
  /*
   * Memory-space registers.
   */
  
  /*
   * The externally visible registers are all 32 bits wide;
   * store the register number of interest in IOAPIC_REG, and store/fetch
   * the real value in IOAPIC_DATA.
   */
     
  
  
  #define	IOAPIC_REG		0x0000
  #define IOAPIC_DATA		0x0010
  
  /*
   * Internal I/O APIC registers.
   */
  
  #define IOAPIC_ID		0x00
  
  #define 	IOAPIC_ID_SHIFT		24
  #define		IOAPIC_ID_MASK		0x0f000000
  
  /* Version, and maximum interrupt pin number. */
    
  #define IOAPIC_VER		0x01
  
  #define		IOAPIC_VER_SHIFT		0
  #define		IOAPIC_VER_MASK			0x000000ff
  
  #define		IOAPIC_MAX_SHIFT	       	16
  #define		IOAPIC_MAX_MASK	       	0x00ff0000
  
  /*
   * Arbitration ID.  Same format as IOAPIC_ID register.
   */
  #define IOAPIC_ARB		0x02
  
  /*
   * Redirection table registers.
   */
  
  #define IOAPIC_REDHI(pin)	(0x11 + ((pin)<<1))
  #define IOAPIC_REDLO(pin)	(0x10 + ((pin)<<1))
  
  #define IOAPIC_REDHI_DEST_SHIFT		24	   /* destination. */
  #define IOAPIC_REDHI_DEST_MASK		0xff000000
  
  #define IOAPIC_REDLO_MASK		0x00010000 /* 0=enabled; 1=masked */
  
  #define IOAPIC_REDLO_LEVEL		0x00008000 /* 0=edge, 1=level */
  #define IOAPIC_REDLO_RIRR		0x00004000 /* remote IRR; read only */
  #define IOAPIC_REDLO_ACTLO		0x00002000 /* 0=act. hi; 1=act. lo */
  #define IOAPIC_REDLO_DELSTS		0x00001000 /* 0=idle; 1=send pending */
  #define IOAPIC_REDLO_DSTMOD		0x00000800 /* 0=physical; 1=logical */
  
  #define IOAPIC_REDLO_DEL_MASK		0x00000700 /* del. mode mask */
  #define IOAPIC_REDLO_DEL_SHIFT		8
  
  #define IOAPIC_REDLO_DEL_FIXED		0
  #define IOAPIC_REDLO_DEL_LOPRI		1
  #define IOAPIC_REDLO_DEL_SMI		2
  #define IOAPIC_REDLO_DEL_NMI		4
  #define IOAPIC_REDLO_DEL_INIT		5
  #define IOAPIC_REDLO_DEL_EXTINT		7
  
  #define IOAPIC_REDLO_VECTOR_MASK	0x000000ff /* delivery vector */
  
  #define IMCR_ADDR		0x22
  #define IMCR_DATA		0x23
  
  #define IMCR_REGISTER		0x70
  #define		IMCR_PIC	0x00
  #define 	IMCR_APIC	0x01
  