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sbusreg.h revision 1.1 
      1 /*
      2  * Copyright (c) 1992, 1993
      3  *	The Regents of the University of California.  All rights reserved.
      4  *
      5  * This software was developed by the Computer Systems Engineering group
      6  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
      7  * contributed to Berkeley.
      8  *
      9  * All advertising materials mentioning features or use of this software
     10  * must display the following acknowledgement:
     11  *	This product includes software developed by the University of
     12  *	California, Lawrence Berkeley Laboratory.
     13  *
     14  * Redistribution and use in source and binary forms, with or without
     15  * modification, are permitted provided that the following conditions
     16  * are met:
     17  * 1. Redistributions of source code must retain the above copyright
     18  *    notice, this list of conditions and the following disclaimer.
     19  * 2. Redistributions in binary form must reproduce the above copyright
     20  *    notice, this list of conditions and the following disclaimer in the
     21  *    documentation and/or other materials provided with the distribution.
     22  * 3. All advertising materials mentioning features or use of this software
     23  *    must display the following acknowledgement:
     24  *	This product includes software developed by the University of
     25  *	California, Berkeley and its contributors.
     26  * 4. Neither the name of the University nor the names of its contributors
     27  *    may be used to endorse or promote products derived from this software
     28  *    without specific prior written permission.
     29  *
     30  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     31  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     32  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     33  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     34  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     35  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     36  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     37  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     38  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     39  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     40  * SUCH DAMAGE.
     41  *
     42  *	@(#)sbusreg.h	8.1 (Berkeley) 6/11/93
     43  *
     44  * from: Header: sbusreg.h,v 1.6 92/11/26 02:28:14 torek Exp  (LBL)
     45  * $Id: sbusreg.h,v 1.1 1993/10/02 10:23:56 deraadt Exp $
     46  */
     47 
     48 /*
     49  * Sun-4c S-bus definitions.  (Should be made generic!)
     50  *
     51  * Sbus slot 0 is not a separate slot; it talks to the onboard I/O devices.
     52  * It is, however, addressed just like any `real' Sbus.
     53  *
     54  * Sbus device addresses are obtained from the FORTH PROMs.  They come
     55  * in `absolute' and `relative' address flavors, so we have to handle both.
     56  * Relative addresses do *not* include the slot number.
     57  */
     58 #define	SBUS_BASE		0xf8000000
     59 #define	SBUS_ADDR(slot, off)	(SBUS_BASE + ((slot) << 25) + (off))
     60 #define	SBUS_ABS(a)		((unsigned)(a) >= SBUS_BASE)
     61 #define	SBUS_ABS_TO_SLOT(a)	(((a) - SBUS_BASE) >> 25)
     62 #define	SBUS_ABS_TO_OFFSET(a)	(((a) - SBUS_BASE) & 0x1ffffff)
     63