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/* $OpenBSD: sccvar.h,v 1.4 1997/01/24 19:58:16 niklas Exp $ */
/* $NetBSD: sccvar.h,v 1.4 1996/11/16 00:40:14 cgd Exp $ */
/*
* Copyright (c) 1991,1990,1989,1994,1995 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell and Rick Macklem.
*
* 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 University of
* California, Berkeley and its contributors.
* 4. 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.
*
* from: @(#)sccreg.h 8.1 (Berkeley) 6/10/93
*/
/*
* Definitions for Intel 82530 serial communications chip. Each chip is a
* dual uart with the A channels used for the keyboard and mouse with the B
* channel(s) for comm ports with modem control. Since some registers are
* used for the other channel, the following macros are used to access the
* register ports.
*/
#if 1
#define alpha_sparse
#endif
#define DENSE
#ifdef alpha_sparse
#undef DENSE
#define SPARSE
#endif
typedef struct {
struct {
volatile u_int scc_command; /* Register select. */
#ifdef SPARSE
u_int scc_pad0;
#endif
volatile u_int scc_data; /* Rx/Tx buffer */
#ifdef SPARSE
u_int scc_pad1;
#endif
} scc_channel[2];
} scc_regmap_t;
#define scc_get_datum(d, v) \
do { (v) = ((d) >> 8) & 0xff; alpha_mb(); DELAY(5); } while (0)
#define scc_set_datum(d, v) \
do { (d) = (volatile unsigned int)(v) << 8; alpha_mb(); DELAY(5); } while (0)
/*
* Minor device numbers for scc. Weird because B channel comes first and
* the A channels are wired for keyboard/mouse and the B channels for the
* comm port(s).
*/
#define SCCCOMM2_PORT 0x0
#define SCCMOUSE_PORT 0x1
#define SCCCOMM3_PORT 0x2
#define SCCKBD_PORT 0x3
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