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mcbusvar.h revision 1.2 
      1 /* $NetBSD: mcbusvar.h,v 1.2 1998/04/15 20:40:34 mjacob Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1998 by Matthew Jacob
      5  * NASA AMES Research Center.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice immediately at the beginning of the file, without modification,
     13  *    this list of conditions, and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. The name of the author may not be used to endorse or promote products
     18  *    derived from this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     23  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
     24  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     30  * SUCH DAMAGE.
     31  */
     32 
     33 /*
     34  * Soft definitions for the MCBUS main system
     35  * bus found on AlphaServer 4100 systems.
     36  */
     37 
     38 /*
     39  * The structure used to attach devices to the MCbus.
     40  */
     41 struct mcbus_dev_attach_args {
     42 	char *		ma_name;	/* so things aren't confused */
     43 	u_int8_t	ma_gid;		/* GID of MCBUS (MCBUS #) */
     44 	u_int8_t	ma_mid;		/* Module ID on MCBUS */
     45 	u_int8_t	ma_type;	/* Module "type" */
     46 	u_int8_t	ma_configured;	/* nonzero if configured */
     47 };
     48 #define	MCBUS_GID_FROM_INSTANCE(unit)	(7 - unit)
     49 
     50 /*
     51  * Bus-dependent structure for CPUs. This is dynamically allocated
     52  * for each CPU on the MCbus, and glued into the cpu_softc as sc_busdep,
     53  * if there is such a beast available. Otherwise, a single global version
     54  * is used so that the MCPCIA configuration code can determine toads
     55  * like module id and bcache size of the master CPU.
     56  */
     57 struct mcbus_cpu_busdep {
     58 	u_int8_t	mcbus_cpu_mid;	/* MCbus Module ID */
     59 	u_int8_t	mcbus_bcache;	/* BCache on this CPU */
     60 	u_int8_t	mcbus_valid;
     61 };
     62 extern struct mcbus_cpu_busdep mcbus_primary;
     63 
     64 #define	MCBUS_CPU_BCACHE_0MB	0
     65 #define	MCBUS_CPU_BCACHE_1MB	1
     66 #define	MCBUS_CPU_BCACHE_4MB	2
     67 
     68 /*
     69  * "types"
     70  */
     71 #define	MCBUS_TYPE_RES	0
     72 #define	MCBUS_TYPE_UNK	1
     73 #define	MCBUS_TYPE_MEM	2
     74 #define	MCBUS_TYPE_CPU	3
     75 #define	MCBUS_TYPE_PCI	4
     76