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      1 /*	$NetBSD: apcireg.h,v 1.2 2005/12/11 12:17:19 christos 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))
     60