sys/arch/sgimips/include/z8530var.h

   1 /*      $NetBSD: z8530var.h,v 1.8 2007/11/07 15:56:13 ad Exp $  */
   2
   3 /*
   4  * Copyright (c) 1992, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This software was developed by the Computer Systems Engineering group
   8  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
   9  * contributed to Berkeley.
  10  *
  11  * All advertising materials mentioning features or use of this software
  12  * must display the following acknowledgement:
  13  *      This product includes software developed by the University of
  14  *      California, Lawrence Berkeley Laboratory.
  15  *
  16  * Redistribution and use in source and binary forms, with or without
  17  * modification, are permitted provided that the following conditions
  18  * are met:
  19  * 1. Redistributions of source code must retain the above copyright
  20  *    notice, this list of conditions and the following disclaimer.
  21  * 2. Redistributions in binary form must reproduce the above copyright
  22  *    notice, this list of conditions and the following disclaimer in the
  23  *    documentation and/or other materials provided with the distribution.
  24  * 3. Neither the name of the University nor the names of its contributors
  25  *    may be used to endorse or promote products derived from this software
  26  *    without specific prior written permission.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  38  * SUCH DAMAGE.
  39  *
  40  *      @(#)zsvar.h     8.1 (Berkeley) 6/11/93
  41  */
  42
  43 /*
  44  * Copyright (c) 1994 Gordon W. Ross
  45  *
  46  * This software was developed by the Computer Systems Engineering group
  47  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
  48  * contributed to Berkeley.
  49  *
  50  * All advertising materials mentioning features or use of this software
  51  * must display the following acknowledgement:
  52  *      This product includes software developed by the University of
  53  *      California, Lawrence Berkeley Laboratory.
  54  *
  55  * Redistribution and use in source and binary forms, with or without
  56  * modification, are permitted provided that the following conditions
  57  * are met:
  58  * 1. Redistributions of source code must retain the above copyright
  59  *    notice, this list of conditions and the following disclaimer.
  60  * 2. Redistributions in binary form must reproduce the above copyright
  61  *    notice, this list of conditions and the following disclaimer in the
  62  *    documentation and/or other materials provided with the distribution.
  63  * 3. All advertising materials mentioning features or use of this software
  64  *    must display the following acknowledgement:
  65  *      This product includes software developed by the University of
  66  *      California, Berkeley and its contributors.
  67  * 4. Neither the name of the University nor the names of its contributors
  68  *    may be used to endorse or promote products derived from this software
  69  *    without specific prior written permission.
  70  *
  71  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  72  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  73  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  74  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  75  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  76  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  77  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  78  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  79  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  80  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  81  * SUCH DAMAGE.
  82  *
  83  *      @(#)zsvar.h     8.1 (Berkeley) 6/11/93
  84  */
  85
  86 #include <machine/bus.h>
  87 #include <dev/ic/z8530sc.h>
  88
  89 struct zs_channel {
  90         struct zs_chanstate     cs_zscs;        /* Required: soft state */
  91         bus_space_tag_t         cs_bustag;      /* Machine-dependent */
  92         bus_space_handle_t      cs_regs;
  93 };
  94
  95 struct zsc_softc {
  96         device_t                zsc_dev;        /* required: base device */
  97         struct  zs_chanstate   *zsc_cs[2];      /* channel soft state */
  98         struct  zs_channel      zsc_cs_store[2];
  99         /* Machine-dependent part follows... */
 100         bus_space_tag_t         zsc_bustag;     /* Bus type */
 101         bus_space_handle_t      zsc_base;       /* Device base address */
 102         struct evcnt            zsc_intrcnt;    /* count interrupts */
 103         void                   *sc_si;          /* Softinterrupt handle */
 104 };
 105
 106 /*
 107  * Functions to read and write individual registers in a channel.
 108  * The SCC chip requires 3-4 PCLK cycles recovery time between accesses
 109  */
 110
 111 uint8_t zs_read_reg (struct zs_chanstate *, uint8_t);
 112 uint8_t zs_read_csr (struct zs_chanstate *);
 113 uint8_t zs_read_data (struct zs_chanstate *);
 114
 115 void  zs_write_reg (struct zs_chanstate *, uint8_t, uint8_t);
 116 void  zs_write_csr (struct zs_chanstate *, uint8_t);
 117 void  zs_write_data (struct zs_chanstate *, uint8_t);
 118
 119 /* Zilog Serial hardware interrupts (level 0) */
 120 #define splzs()         spltty()
 121 #define IPL_ZS          IPL_TTY