82 lines
3.5 KiB
C
82 lines
3.5 KiB
C
/* $NetBSD: z8530var.h,v 1.2 2001/05/11 04:26:17 thorpej Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1994 Gordon W. Ross
|
|
* 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. 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.
|
|
*
|
|
* @(#)zsvar.h 8.1 (Berkeley) 6/11/93
|
|
*/
|
|
|
|
#include <machine/bus.h>
|
|
#include <dev/ic/z8530sc.h>
|
|
|
|
struct zs_channel {
|
|
struct zs_chanstate cs_zscs; /* Required: soft state */
|
|
bus_space_tag_t cs_bustag; /* Machine-dependent */
|
|
bus_space_handle_t cs_regs;
|
|
};
|
|
|
|
struct zsc_softc {
|
|
struct device zsc_dev; /* required: base device */
|
|
struct zs_chanstate *zsc_cs[2]; /* channel soft state */
|
|
struct zs_channel zsc_cs_store[2];
|
|
/* Machine-dependent part follows... */
|
|
bus_space_tag_t zsc_bustag; /* Bus type */
|
|
bus_space_handle_t zsc_base; /* Device base address */
|
|
void *sc_si; /* Softinterrupt handle */
|
|
};
|
|
|
|
/*
|
|
* Functions to read and write individual registers in a channel.
|
|
* The SCC chip requires 3-4 PCLK cycles recovery time between accesses
|
|
*/
|
|
|
|
u_char zs_read_reg __P((struct zs_chanstate *cs, u_char reg));
|
|
u_char zs_read_csr __P((struct zs_chanstate *cs));
|
|
u_char zs_read_data __P((struct zs_chanstate *cs));
|
|
|
|
void zs_write_reg __P((struct zs_chanstate *cs, u_char reg, u_char val));
|
|
void zs_write_csr __P((struct zs_chanstate *cs, u_char val));
|
|
void zs_write_data __P((struct zs_chanstate *cs, u_char val));
|
|
|
|
/* Zilog Serial hardware interrupts (level 0) */
|
|
#define splzs() spltty()
|