text: /* $OpenBSD: mcbusvar.h,v 1.1 2007/03/16 21:22:27 robert Exp $ */
  /* $NetBSD: mcbusvar.h,v 1.6 2005/12/11 12:16:17 christos Exp $ */
  
  /*
   * Copyright (c) 1998 by Matthew Jacob
   * NASA AMES Research Center.
   * All rights reserved.
   *
   * 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 immediately at the beginning of the file, without modification,
   *    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. The name of the author may not be used to endorse or promote products
   *    derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
   */
  
  /*
   * Soft definitions for the MCBUS main system
   * bus found on AlphaServer 4100 systems.
   */
  
  /*
   * The structure used to attach devices to the MCbus.
   */
  struct mcbus_dev_attach_args {
  	char *		ma_name;	/* so things aren't confused */
  	u_int8_t	ma_gid;		/* GID of MCBUS (MCBUS #) */
  	u_int8_t	ma_mid;		/* Module ID on MCBUS */
  	u_int8_t	ma_type;	/* Module "type" */
  	u_int8_t	ma_configured;	/* nonzero if configured */
  };
  #define	MCBUS_GID_FROM_INSTANCE(unit)	(7 - unit)
  
  /*
   * Bus-dependent structure for CPUs. This is dynamically allocated
   * for each CPU on the MCbus, and glued into the cpu_softc as sc_busdep,
   * if there is such a beast available. Otherwise, a single global version
   * is used so that the MCPCIA configuration code can determine toads
   * like module id and bcache size of the master CPU.
   */
  struct mcbus_cpu_busdep {
  	u_int8_t	mcbus_cpu_mid;	/* MCbus Module ID */
  	u_int8_t	mcbus_bcache;	/* BCache on this CPU */
  	u_int8_t	mcbus_valid;
  };
  
  #define	MCBUS_CPU_BCACHE_0MB	0
  #define	MCBUS_CPU_BCACHE_1MB	1
  #define	MCBUS_CPU_BCACHE_4MB	2
  
  /*
   * "types"
   */
  #define	MCBUS_TYPE_RES	0
  #define	MCBUS_TYPE_UNK	1
  #define	MCBUS_TYPE_MEM	2
  #define	MCBUS_TYPE_CPU	3
  #define	MCBUS_TYPE_PCI	4
  
  #ifdef _KERNEL
  extern struct mcbus_cpu_busdep mcbus_primary;
  extern const int mcbus_mcpcia_probe_order[];
  #endif
  