1/*	$NetBSD: mbavar.h,v 1.14 2017/05/22 17:13:09 ragge Exp $ */
2/*
3 * Copyright (c) 1994 Ludd, University of Lule}, Sweden
4 * 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 ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <sys/device.h>
28#include <machine/scb.h>
29
30#define MBCR_INIT	1
31#define	MBCR_IE		(1<<2)
32#define	MBDS_DPR	(1<<8)
33#define	MBSR_NED	(1<<18)
34#define	MBDT_MOH	(1<<13)
35#define	MBDT_TYPE	511
36#define MBDT_TAP	(1<<14)
37
38#define	CLOSED		0
39#define	WANTOPEN	1
40#define	RDLABEL		2
41#define	OPEN		3
42#define	OPENRAW		4
43
44#define	MAXMBADEV	8	/* Max units per MBA */
45
46/*
47 * Devices that have different device drivers.
48 */
49enum	mb_devices {
50	MB_UK,	/* unknown */
51	MB_RP,	/* RM/RP disk */
52	MB_TU,	/* TM03 based tape, ex. TU45 or TU77 */
53	MB_MT	/* TU78 tape */
54};
55
56/*
57 * Current state of the adapter.
58 */
59enum    sc_state {
60	SC_AUTOCONF,
61	SC_ACTIVE,
62	SC_IDLE
63};
64
65/*
66 * Return value after a finished data transfer, from device driver.
67 */
68enum	xfer_action {
69	XFER_RESTART,
70	XFER_FINISH
71};
72
73/*
74 * Info passed do unit device driver during autoconfig.
75 */
76struct	mba_attach_args {
77	int	ma_unit;
78        int	ma_type;
79	const char	*ma_name;
80	enum	mb_devices ma_devtyp;
81	bus_space_tag_t ma_iot;
82	bus_space_handle_t ma_ioh;
83};
84
85/*
86 * Common struct used to communicate between the mba device driver
87 * and the unit device driver.
88 */
89struct	mba_device {
90	STAILQ_ENTRY(mba_device) md_link; /* linked list of runnable devices */
91	void (*md_start)(struct mba_device *);
92				/* Start routine to be called by mbastart. */
93	int (*md_attn)(struct mba_device *);
94				/* Routine to be called after attn intr */
95	enum xfer_action (*md_finish)(struct mba_device *, int, int *);
96				/* Call after xfer finish */
97	void *md_softc;		/* Backpointer to this units softc. */
98	struct mba_softc *md_mba;
99	struct bufq_state *md_q;	/* queue of I/O requests */
100};
101
102struct	mba_softc {
103	device_t sc_dev;
104	bus_space_tag_t sc_iot;
105	bus_space_handle_t sc_ioh;
106	STAILQ_HEAD(,mba_device) sc_xfers;
107	struct evcnt sc_intrcnt;
108	enum sc_state sc_state;
109	struct mba_device *sc_md[MAXMBADEV];
110};
111
112struct  mbaunit {
113	int     nr;
114	const char    *name;
115	enum	mb_devices devtyp;
116};
117
118/* Common prototypes */
119void	mbaqueue(struct mba_device *);
120
121