sys/arch/mvme68k/dev/zsvar.h

   1 /*      $NetBSD: zsvar.h,v 1.11 2008/01/12 09:54:28 tsutsui 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