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
|
/*-
* Copyright (c) 2004-2006 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _DEV_SCC_BFE_H_
#define _DEV_SCC_BFE_H_
#include <sys/serial.h>
/*
* Bus access structure. This structure holds the minimum information needed
* to access the SCC. The rclk field, although not important to actually
* access the SCC, is important for baudrate programming, delay loops and
* other timing related computations.
*/
struct scc_bas {
bus_space_tag_t bst;
bus_space_handle_t bsh;
u_int range;
u_int rclk;
u_int regshft;
};
#define scc_regofs(bas, reg) ((reg) << (bas)->regshft)
#define scc_getreg(bas, reg) \
bus_space_read_1((bas)->bst, (bas)->bsh, scc_regofs(bas, reg))
#define scc_setreg(bas, reg, value) \
bus_space_write_1((bas)->bst, (bas)->bsh, scc_regofs(bas, reg), value)
#define scc_barrier(bas) \
bus_space_barrier((bas)->bst, (bas)->bsh, 0, (bas)->range, \
BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE)
/*
* SCC mode (child) and channel control structures.
*/
#define SCC_NMODES 3
#define SCC_ISRCCNT 5
struct scc_chan;
struct scc_mode {
struct scc_chan *m_chan;
device_t m_dev;
u_int m_mode;
int m_attached:1;
int m_fastintr:1;
int m_hasintr:1;
int m_probed:1;
int m_sysdev:1;
driver_filter_t *ih;
serdev_intr_t *ih_src[SCC_ISRCCNT];
void *ih_arg;
};
struct scc_chan {
struct resource ch_rres;
struct resource_list ch_rlist;
struct resource *ch_ires; /* Interrupt resource. */
void *ch_icookie;
int ch_irid;
struct scc_mode ch_mode[SCC_NMODES];
u_int ch_nr;
int ch_enabled:1;
int ch_sysdev:1;
uint32_t ch_ipend;
uint32_t ch_hwsig;
};
/*
* SCC class & instance (=softc)
*/
struct scc_class {
KOBJ_CLASS_FIELDS;
u_int cl_channels; /* Number of independent channels. */
u_int cl_class; /* SCC bus class ID. */
u_int cl_modes; /* Supported modes (bitset). */
int cl_range;
};
extern struct scc_class scc_quicc_class;
extern struct scc_class scc_sab82532_class;
extern struct scc_class scc_z8530_class;
struct scc_softc {
KOBJ_FIELDS;
struct scc_class *sc_class;
struct scc_bas sc_bas;
device_t sc_dev;
struct mtx sc_hwmtx; /* Spinlock protecting hardware. */
struct resource *sc_rres; /* Register resource. */
int sc_rrid;
int sc_rtype; /* SYS_RES_{IOPORT|MEMORY}. */
struct scc_chan *sc_chan;
int sc_fastintr:1;
int sc_leaving:1;
int sc_polled:1;
uint32_t sc_hwsig; /* Signal state. Used by HW driver. */
};
extern devclass_t scc_devclass;
extern char scc_driver_name[];
int scc_bfe_attach(device_t dev, u_int ipc);
int scc_bfe_detach(device_t dev);
int scc_bfe_probe(device_t dev, u_int regshft, u_int rclk, u_int rid);
struct resource *scc_bus_alloc_resource(device_t, device_t, int, int *,
u_long, u_long, u_long, u_int);
int scc_bus_get_resource(device_t, device_t, int, int, u_long *, u_long *);
int scc_bus_read_ivar(device_t, device_t, int, uintptr_t *);
int scc_bus_release_resource(device_t, device_t, int, int, struct resource *);
int scc_bus_setup_intr(device_t, device_t, struct resource *, int,
driver_filter_t *, void (*)(void *), void *, void **);
int scc_bus_teardown_intr(device_t, device_t, struct resource *, void *);
#endif /* _DEV_SCC_BFE_H_ */
|
