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z8530var.h revision 1.2 
      1 /*    $NetBSD: z8530var.h,v 1.2 1999/03/16 16:30:21 minoura Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1998 Minoura Makoto
      5  * Copyright (c) 1994 Gordon W. Ross
      6  * Copyright (c) 1992, 1993
      7  *	The Regents of the University of California.  All rights reserved.
      8  *
      9  * This software was developed by the Computer Systems Engineering group
     10  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
     11  * contributed to Berkeley.
     12  *
     13  * All advertising materials mentioning features or use of this software
     14  * must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Lawrence Berkeley Laboratory.
     17  *
     18  * Redistribution and use in source and binary forms, with or without
     19  * modification, are permitted provided that the following conditions
     20  * are met:
     21  * 1. Redistributions of source code must retain the above copyright
     22  *    notice, this list of conditions and the following disclaimer.
     23  * 2. Redistributions in binary form must reproduce the above copyright
     24  *    notice, this list of conditions and the following disclaimer in the
     25  *    documentation and/or other materials provided with the distribution.
     26  * 3. All advertising materials mentioning features or use of this software
     27  *    must display the following acknowledgement:
     28  *	This product includes software developed by the University of
     29  *	California, Berkeley and its contributors.
     30  * 4. Neither the name of the University nor the names of its contributors
     31  *    may be used to endorse or promote products derived from this software
     32  *    without specific prior written permission.
     33  *
     34  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     35  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     36  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     37  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     38  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     39  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     40  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     41  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     42  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     43  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     44  * SUCH DAMAGE.
     45  *
     46  *	@(#)zsvar.h	8.1 (Berkeley) 6/11/93
     47  */
     48 
     49 #include <machine/bus.h>
     50 #include <dev/ic/z8530sc.h>
     51 
     52 
     53 #define ZS_DELAY()			delay(2)
     54 
     55 /* The layout of this is hardware-dependent (padding, order). */
     56 struct zschan {
     57 	u_char		zc_xxx0;
     58 	volatile u_char	zc_csr;		/* ctrl,status, and indirect access */
     59 	u_char		zc_xxx1;
     60 	volatile u_char	zc_data;	/* data */
     61 };
     62 struct zsdevice {
     63 	/* Yes, they are backwards. */
     64 	struct	zschan zs_chan_b;
     65 	struct	zschan zs_chan_a;
     66 };
     67 
     68 struct zsc_softc {
     69 	struct	device zsc_dev;		/* required first: base device */
     70 	struct	zs_chanstate *zsc_cs[2];	/* channel A and B soft state */
     71 	/* Machine-dependent part follows... */
     72 	struct zs_chanstate  zsc_cs_store[2];
     73 	struct zsdevice *zsc_addr;
     74 };
     75 
     76 /*
     77  * Functions to read and write individual registers in a channel.
     78  * The ZS chip requires a 1.6 uSec. recovery time between accesses,
     79  * and the Sun3 hardware does NOT take care of this for you.
     80  * The delay is now handled inside the chip access functions.
     81  * These could be inlines, but with the delay, speed is moot.
     82  */
     83 
     84 u_char zs_read_reg __P((struct zs_chanstate *cs, u_char reg));
     85 u_char zs_read_csr __P((struct zs_chanstate *cs));
     86 u_char zs_read_data __P((struct zs_chanstate *cs));
     87 
     88 void  zs_write_reg __P((struct zs_chanstate *cs, u_char reg, u_char val));
     89 void  zs_write_csr __P((struct zs_chanstate *cs, u_char val));
     90 void  zs_write_data __P((struct zs_chanstate *cs, u_char val));
     91 
     92 /*
     93  * Physical address for built-in ZS.
     94  */
     95 #define ZSCN_PHYSADDR	0xe98004 /* for serial console */
     96 #define ZSMS_PHYSADDR	0xe98000 /* for mouse */
     97