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      1 /*	$NetBSD: zsvar.h,v 1.14 2024/01/19 03:59:47 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1996 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 /*
     33  * Non-exported definitions common to the different attachment
     34  * types for the SCC on the Motorola MVME series of computers.
     35  */
     36 
     37 #include "opt_mvmeconf.h"
     38 
     39 /*
     40  * The MVME-147 provides a 5 MHz clock to the SCC chips.
     41  */
     42 #define PCLK_147	5000000		/* PCLK pin input clock rate */
     43 
     44 /*
     45  * The MVME-162 provides a 10 MHz clock to the SCC chips.
     46  */
     47 #define PCLK_162	10000000	/* PCLK pin input clock rate */
     48 
     49 /*
     50  * SCC should interrupt host at level 4.
     51  */
     52 #define ZSHARD_PRI	4
     53 
     54 /*
     55  * No delay needed when writing SCC registers.
     56  */
     57 #define ZS_DELAY()
     58 
     59 /*
     60  * XXX Make cnprobe a little easier.
     61  */
     62 #define NZSC	2
     63 
     64 /*
     65  * The layout of this is hardware-dependent (padding, order).
     66  */
     67 struct zschan {
     68 	volatile u_char *zc_csr;	/* ctrl,status, and indirect access */
     69 	volatile u_char *zc_data;	/* data */
     70 };
     71 
     72 struct zsdevice {
     73 	/* Yes, they are backwards. */
     74 	struct	zschan zs_chan_b;
     75 	struct	zschan zs_chan_a;
     76 };
     77 
     78 /* Globals exported from zs.c */
     79 extern	u_char zs_init_reg[];
     80 
     81 /* Functions exported to ASIC-specific drivers. */
     82 void	zs_config(struct zsc_softc *, struct zsdevice *, int, int);
     83 void	zs_cnconfig(int, int, struct zsdevice *, int);
     84 #ifdef MVME147
     85 int	zshard_shared(void *);
     86 #endif
     87 #if defined(MVME162) || defined(MVME172)
     88 int	zshard_unshared(void *);
     89 #endif
     90