91 lines
3.7 KiB
C
91 lines
3.7 KiB
C
/* $NetBSD: z8530var.h,v 1.6 2003/08/07 16:29:42 agc 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.
|
|
*
|
|
* @(#)zsvar.h 8.1 (Berkeley) 6/11/93
|
|
*/
|
|
|
|
#include <machine/bus.h>
|
|
#include <dev/ic/z8530sc.h>
|
|
|
|
struct zsc_softc {
|
|
struct device zsc_dev; /* base device */
|
|
bus_space_tag_t zsc_bustag; /* bus space/DMA tags */
|
|
bus_dma_tag_t zsc_dmatag;
|
|
struct zs_chanstate *zsc_cs[2]; /* channel A and B soft state */
|
|
|
|
/* Machine-dependent part follows... */
|
|
int zsc_promunit; /* PROM's view of zs devices */
|
|
int zsc_node; /* PROM node, if any */
|
|
struct evcnt zsc_intrcnt; /* count interrupts */
|
|
struct zs_chanstate zsc_cs_store[2];
|
|
};
|
|
|
|
/*
|
|
* Functions to read and write individual registers in a channel.
|
|
* The ZS chip requires a 1.6 uSec. recovery time between accesses.
|
|
* On the SparcStation the recovery time is handled in hardware.
|
|
* On the older Sun4 machine it isn't, and software must do it.
|
|
*
|
|
* However, it *is* a problem on some Sun4m's (i.e. the SS20) (XXX: why?).
|
|
* Thus we leave in the delay (done in the functions below).
|
|
* XXX: (ABB) Think about this more.
|
|
*
|
|
* The functions below could be macros instead if we are concerned
|
|
* about the function call overhead where ZS_DELAY does nothing.
|
|
*/
|
|
|
|
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));
|
|
|
|
/* The sparc has splzs() in psl.h */
|
|
|
|
/* We want to call it "zs" instead of "zsc" (sigh). */
|
|
#ifndef ZSCCF_CHANNEL
|
|
#define ZSCCF_CHANNEL 0
|
|
#define ZSCCF_CHANNEL_DEFAULT -1
|
|
#endif
|
|
|
|
#undef cn_trap
|
|
#define cn_trap() zs_abort(NULL)
|