NetBSD/sys/arch/mvme68k/dev/zsvar.h

86 lines
3.0 KiB
C

/* $NetBSD: zsvar.h,v 1.5 2000/03/18 22:33:05 scw Exp $ */
/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* Non-exported definitons common to the different attachment
* types for the SCC on the Motorola MVME series of computers.
*/
/*
* The MVME provides a 4.9152 MHz clock to the SCC chips.
*/
#define PCLK (9600 * 512) /* PCLK pin input clock rate */
/*
* SCC should interrupt host at level 4.
*/
#define ZSHARD_PRI 4
/*
* No delay needed when writing SCC registers.
*/
#define ZS_DELAY()
/*
* XXX Make cnprobe a little easier.
*/
#define NZSC 2
/*
* The layout of this is hardware-dependent (padding, order).
*/
struct zschan {
volatile u_char zc_csr; /* ctrl,status, and indirect access */
volatile u_char zc_data; /* data */
};
struct zsdevice {
/* Yes, they are backwards. */
struct zschan zs_chan_b;
struct zschan zs_chan_a;
};
/* Globals exported from zs.c */
extern u_char zs_init_reg[];
/* Functions exported to ASIC-specific drivers. */
void zs_config __P((struct zsc_softc *, bus_space_tag_t,bus_space_handle_t));
void zs_cnconfig __P((int, int, bus_space_tag_t, bus_space_handle_t));
int zshard __P((void *));
void zssoft __P((void *));