sys/arch/hp300/stand/common/apcireg.h

   1 /*      $NetBSD: apcireg.h,v 1.1.4.3 2004/09/21 13:15:27 skrll Exp $    */
   2
   3 /*
   4  * Copyright (c) 1997 Michael Smith.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 #include <hp300/dev/iotypes.h>
  29
  30 struct apciregs {
  31         vu_char         ap_data;
  32         u_char          pad0[3];
  33         vu_char         ap_ier;
  34         u_char          pad1[3];
  35         vu_char         ap_iir;
  36 #define ap_fifo ap_iir
  37         u_char          pad2[3];
  38         vu_char         ap_cfcr;
  39         u_char          pad3[3];
  40         vu_char         ap_mcr;
  41         u_char          pad4[3];
  42         vu_char         ap_lsr;
  43         u_char          pad5[3];
  44         vu_char         ap_msr;
  45         u_char          pad6[3];
  46         vu_char         ap_scratch;
  47 };
  48
  49 /* max number of apci ports */
  50 #define APCI_MAXPORT    4
  51
  52 /*
  53  * baudrate divisor calculations.
  54  *
  55  * The input clock frequency appears to be 8.0064MHz, giving a scale
  56  * factor of 500400.  (Using exactly 8MHz gives framing errors with
  57  * the Apollo keyboard.)
  58  */
  59 #define APCIBRD(x)      (500000 / (x))