xref: /netbsd-src/sys/arch/hp300/stand/common/apcireg.h (revision 95e1ffb15694e54f29f8baaa4232152b703c2a5a)
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