1/*	$OpenBSD: mpuvar.h,v 1.7 2022/03/21 19:22:40 miod Exp $	*/
2/*	$NetBSD: mpu401var.h,v 1.3 1998/11/25 22:17:06 augustss Exp $	*/
3
4/*
5 * Copyright (c) 1998 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Lennart Augustsson (augustss@netbsd.org).
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33struct mpu_softc {
34	bus_space_tag_t iot;		/* tag */
35	bus_space_handle_t ioh;		/* handle */
36	int	iobase;
37	int	open;
38	void	(*intr)(void *, int);	/* midi input intr handler */
39	void	*arg;			/* arg for intr() */
40};
41
42extern const struct midi_hw_if mpu_midi_hw_if;
43
44int	mpu_intr(void *);
45int	mpu_find(void *);
46int	mpu_open(void *, int,
47		 void (*iintr)(void *, int),
48		 void (*ointr)(void *), void *arg);
49void	mpu_close(void *);
50int	mpu_output(void *, int);
51void	mpu_getinfo(void *addr, struct midi_info *mi);
52
53#define MPU401_NPORT		2
54#define MPU_DATA		0
55#define MPU_COMMAND		1
56#define  MPU_RESET		0xff
57#define  MPU_UART_MODE		0x3f
58#define  MPU_ACK		0xfe
59#define MPU_STATUS		1
60#define  MPU_OUTPUT_BUSY	0x40
61#define  MPU_INPUT_EMPTY	0x80
62
63#define MPU_MAXWAIT	10000	/* usec/10 to wait */
64