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/* $OpenBSD: sbusreg.h,v 1.6 2010/07/10 19:32:24 miod Exp $ */
/* $NetBSD: sbusreg.h,v 1.3 1997/09/14 19:17:25 pk Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* 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, Lawrence Berkeley Laboratory.
*
* 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. 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.
*
* @(#)sbusreg.h 8.1 (Berkeley) 6/11/93
*/
/*
* Sun-4c S-bus definitions. (Should be made generic!)
*
* SBus slot 0 is not a separate slot; it talks to the onboard I/O devices.
* It is, however, addressed just like any `real' SBus.
*
* SBus device addresses are obtained from the FORTH PROMs. They come
* in `absolute' and `relative' address flavors, so we have to handle both.
* Relative addresses do *not* include the slot number.
*/
#define SBUS_PAGE_SHIFT (13 + PAGE_SHIFT)
#define SBUS_BASE (0 - (4 << SBUS_PAGE_SHIFT))
#define SBUS_PAGE_MASK ((1 << SBUS_PAGE_SHIFT) - 1)
#define SBUS_ADDR(slot, off) (SBUS_BASE + ((slot) << SBUS_PAGE_SHIFT) + (off))
#define SBUS_ABS(a) ((unsigned)(a) >= SBUS_BASE)
#define SBUS_ABS_TO_SLOT(a) (((a) - SBUS_BASE) >> SBUS_PAGE_SHIFT)
#define SBUS_ABS_TO_OFFSET(a) (((a) - SBUS_BASE) & SBUS_PAGE_MASK)
struct sbusreg {
u_int32_t sbus_afsr; /* M-to-S Asynchronous Fault Status */
u_int32_t sbus_afar; /* M-to-S Asynchronous Fault Address */
u_int32_t sbus_arbiter; /* Arbiter Enable */
u_int32_t sbus_reserved1;
#define NSBUSCFG 20
/* Actual number dependent on machine model */
u_int32_t sbus_sbuscfg[NSBUSCFG]; /* SBus configuration control */
};
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