summaryrefslogtreecommitdiff
path: root/sys/dev/tc/tcvar.h
blob: 7f2dd661a5ffe6eff833d6ecd011917b732caa26 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
/*	$OpenBSD: tcvar.h,v 1.8 2002/03/14 01:27:03 millert Exp $	*/
/*	$NetBSD: tcvar.h,v 1.7 1996/10/22 21:37:31 cgd Exp $	*/

/*
 * Copyright (c) 1995 Carnegie-Mellon University.
 * All rights reserved.
 *
 * Author: Chris G. Demetriou
 * 
 * Permission to use, copy, modify and distribute this software and
 * its documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 
 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie the
 * rights to redistribute these changes.
 */

#ifndef __DEV_TC_TCVAR_H__
#define __DEV_TC_TCVAR_H__

/*
 * Definitions for TurboChannel autoconfiguration.
 */

#include <machine/bus.h>
#include <dev/tc/tcreg.h>

/*
 * Machine-dependent definitions.
 */
#if !defined(__alpha__)
ERROR: COMPILING FOR UNSUPPORTED MACHINE, OR MORE THAN ONE.
#endif
#ifdef __alpha__
#include <alpha/tc/tc_machdep.h>
#endif

/*
 * In the long run, the following block will go completely away
 * (i.e. both parts of the #if, including the #include, etc.).
 * For now, the MI TC code still uses the old definitions provided
 * by the pmax port, and not the new definitions provided by the
 * alpha port.
 */
#ifdef __alpha__
/*
 * On the alpha, map the new definitions to the old.
 */
#include <machine/intr.h>

#define tc_intrlevel_t	int

#define	TC_IPL_NONE	IPL_NONE
#define	TC_IPL_BIO	IPL_BIO
#define	TC_IPL_NET	IPL_NET
#define	TC_IPL_TTY	IPL_TTY
#define	TC_IPL_CLOCK	IPL_CLOCK

#endif

/*
 * Arguments used to attach TurboChannel busses.
 */
struct tcbus_attach_args {
	char		*tba_busname;		/* XXX should be common */
#ifdef __alpha__ /* XXX */
	bus_space_tag_t tba_memt;
#endif

	/* Bus information */
	u_int		tba_speed;		/* see TC_SPEED_* below */
	u_int		tba_nslots;
	struct tc_slotdesc *tba_slots;
	u_int		tba_nbuiltins;
	const struct tc_builtin *tba_builtins;
	

	/* TC bus resource management; XXX will move elsewhere eventually. */
	void	(*tba_intr_establish) __P((struct device *, void *,
		    tc_intrlevel_t, int (*)(void *), void *));
	void	(*tba_intr_disestablish)(struct device *, void *);
};

/*
 * Arguments used to attach TurboChannel devices.
 */
struct tc_attach_args {
#ifdef __alpha__ /* XXX */
	bus_space_tag_t ta_memt;
#endif

	char		ta_modname[TC_ROM_LLEN+1];
	u_int		ta_slot;
	tc_offset_t	ta_offset;
	tc_addr_t	ta_addr;
	void		*ta_cookie;
	u_int		ta_busspeed;		/* see TC_SPEED_* below */
};

/*
 * Description of TurboChannel slots, provided by machine-dependent
 * code to the TurboChannel bus driver.
 */
struct tc_slotdesc {
	tc_addr_t	tcs_addr;
	void		*tcs_cookie;
	int		tcs_used;
};

/*
 * Description of built-in TurboChannel devices, provided by
 * machine-dependent code to the TurboChannel bus driver.
 */
struct tc_builtin {
	char		*tcb_modname;
	u_int		tcb_slot;
	tc_offset_t	tcb_offset;
	void		*tcb_cookie;
};

/*
 * Interrupt establishment functions.
 */
void	tc_intr_establish __P((struct device *, void *, tc_intrlevel_t,
	    int (*)(void *), void *));
void	tc_intr_disestablish(struct device *, void *);

/*
 * Easy to remember names for TurboChannel device locators.
 */
#define	tccf_slot	cf_loc[0]		/* slot */
#define	tccf_offset	cf_loc[1]		/* offset */

#define	TCCF_SLOT_UNKNOWN	-1
#define	TCCF_OFFSET_UNKNOWN	-1

/*
 * Miscellaneous definitions.
 */
#define	TC_SPEED_12_5_MHZ	0		/* 12.5MHz TC bus */
#define	TC_SPEED_25_MHZ		1		/* 25MHz TC bus */

/*
 * The TurboChannel bus cfdriver, so that subdevices can more
 * easily tell what bus they're on.
 */
extern struct cfdriver tc_cd;

#endif /* __DEV_TC_TCVAR_H__ */