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zsvar.h revision 1.11.10.1
      1 /*	$NetBSD: zsvar.h,v 1.11.10.1 2008/05/16 02:22:53 yamt 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 definitons common to the different attachment
     34  * types for the SCC on the Motorola MVME series of computers.
     35  */
     36 
     37 /*
     38  * The MVME-147 provides a 5 MHz clock to the SCC chips.
     39  */
     40 #define PCLK_147	5000000		/* PCLK pin input clock rate */
     41 
     42 /*
     43  * The MVME-162 provides a 10 MHz clock to the SCC chips.
     44  */
     45 #define PCLK_162	10000000	/* PCLK pin input clock rate */
     46 
     47 /*
     48  * SCC should interrupt host at level 4.
     49  */
     50 #define ZSHARD_PRI	4
     51 
     52 /*
     53  * No delay needed when writing SCC registers.
     54  */
     55 #define ZS_DELAY()
     56 
     57 /*
     58  * XXX Make cnprobe a little easier.
     59  */
     60 #define NZSC	2
     61 
     62 /*
     63  * The layout of this is hardware-dependent (padding, order).
     64  */
     65 struct zschan {
     66 	volatile u_char *zc_csr;	/* ctrl,status, and indirect access */
     67 	volatile u_char *zc_data;	/* data */
     68 };
     69 
     70 struct zsdevice {
     71 	/* Yes, they are backwards. */
     72 	struct	zschan zs_chan_b;
     73 	struct	zschan zs_chan_a;
     74 };
     75 
     76 /* Globals exported from zs.c */
     77 extern	u_char zs_init_reg[];
     78 
     79 /* Functions exported to ASIC-specific drivers. */
     80 void	zs_config(struct zsc_softc *, struct zsdevice *, int, int);
     81 void	zs_cnconfig(int, int, struct zsdevice *, int);
     82 #ifdef MVME147
     83 int	zshard_shared(void *);
     84 #endif
     85 #if defined(MVME162) || defined(MVME172)
     86 int	zshard_unshared(void *);
     87 #endif
     88