1/* $NetBSD: pi1ppcreg.h,v 1.1 2005/12/28 08:31:09 kurahone Exp $ */
2
3/*-
4 * Copyright (c) 2001 Alcove - Nicolas Souchu
5 * Copyright (c) 2005 Joe Britt <britt@danger.com> - SGI PI1 version
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * FreeBSD: src/sys/isa/ppcreg.h,v 1.10.2.4 2001/10/02 05:21:45 nsouch Exp
30 *
31 */
32
33#ifndef __PI1PPCREG_H
34#define __PI1PPCREG_H
35
36/* see iocreg.h for data/ctl/status reg offsets */
37
38/* SPP mode control register bit positions. */
39#define STROBE		0x01
40#define AUTOFEED	0x02
41#define nINIT		0x04
42#define SELECTIN	0x08
43
44/* we emulate this bit */
45#define IRQENABLE	0x10
46
47/* data dir in PS/2 mode */
48#define PCD             0x20
49
50/* SPP status register bit positions. */
51/* #define TIMEOUT	0x01 */
52
53#define nFAULT          0x08
54#define SELECT          0x10
55#define PERROR          0x20
56#define nACK            0x40
57#define nBUSY           0x80
58
59/* Flags indicating ready condition */
60#define SPP_READY (SELECT | nFAULT | nBUSY)
61#define SPP_MASK (SELECT | nFAULT | PERROR | nBUSY)
62
63/* Byte mode signals */
64#define HOSTCLK		STROBE
65#define HOSTBUSY	AUTOFEED
66#define ACTIVE1284	SELECTIN
67#define PTRCLK		nACK
68#define PTRBUSY		nBUSY
69#define ACKDATAREQ	PERROR
70#define XFLAG		SELECT
71#define nDATAVAIL	nFAULT
72
73/* interrupt mask & status bit positions */
74
75/* these interrupts are asserted on rising AND falling edges */
76#define PI1_PLP_PERROR_INTR	0x80
77#define	PI1_PLP_FAULT_INTR	0x40
78#define	PI1_PLP_SELECT_INTR	0x20
79
80/* this interrupt is only asserted on rising edge */
81#define	PI1_PLP_ACK_INTR	0x04
82
83#endif /* __PI1PPCREG_H */
84