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
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
#ifndef CYGONCE_IO_DEVTAB_H
#define CYGONCE_IO_DEVTAB_H
// ====================================================================
//
// devtab.h
//
// Device I/O Table
//
// ====================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later
// version.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License
// along with eCos; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// As a special exception, if other files instantiate templates or use
// macros or inline functions from this file, or you compile this file
// and link it with other works to produce a work based on this file,
// this file does not by itself cause the resulting work to be covered by
// the GNU General Public License. However the source code for this file
// must still be made available in accordance with section (3) of the GNU
// General Public License v2.
//
// This exception does not invalidate any other reasons why a work based
// on this file might be covered by the GNU General Public License.
// -------------------------------------------
// ####ECOSGPLCOPYRIGHTEND####
// ====================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): gthomas
// Contributors: gthomas
// Date: 1999-02-04
// Purpose: Describe low level I/O interfaces.
// Description:
//
//####DESCRIPTIONEND####
//
// ====================================================================
// Private include file. This file should only be used by device
// drivers, not application code.
#include <pkgconf/system.h>
#include <cyg/io/io.h>
#include <cyg/hal/drv_api.h>
#include <cyg/hal/hal_tables.h>
// Set of functions which handle top level I/O functions
typedef struct {
Cyg_ErrNo (*write)(cyg_io_handle_t handle,
const void *buf,
cyg_uint32 *len);
Cyg_ErrNo (*read)(cyg_io_handle_t handle,
void *buf,
cyg_uint32 *len);
Cyg_ErrNo (*bwrite)(cyg_io_handle_t handle,
const void *buf,
cyg_uint32 *len, // in blocks
cyg_uint32 pos); // in blocks
Cyg_ErrNo (*bread)(cyg_io_handle_t handle,
void *buf,
cyg_uint32 *len, // in blocks
cyg_uint32 pos); // in blocks
cyg_bool (*select)(cyg_io_handle_t handle,
cyg_uint32 which,
CYG_ADDRWORD info);
Cyg_ErrNo (*get_config)(cyg_io_handle_t handle,
cyg_uint32 key,
void *buf,
cyg_uint32 *len);
Cyg_ErrNo (*set_config)(cyg_io_handle_t handle,
cyg_uint32 key,
const void *buf,
cyg_uint32 *len);
} cyg_devio_table_t;
// Default functions
__externC Cyg_ErrNo cyg_devio_cwrite(cyg_io_handle_t handle,
const void *buf, cyg_uint32 *len);
__externC Cyg_ErrNo cyg_devio_cread(cyg_io_handle_t handle,
void *buf, cyg_uint32 *len);
__externC Cyg_ErrNo cyg_devio_bwrite(cyg_io_handle_t handle,
const void *buf, cyg_uint32 *len,
cyg_uint32 pos);
__externC Cyg_ErrNo cyg_devio_bread(cyg_io_handle_t handle,
void *buf, cyg_uint32 *len,
cyg_uint32 pos);
__externC Cyg_ErrNo cyg_devio_select(cyg_io_handle_t handle,
cyg_uint32 which,
CYG_ADDRWORD info);
__externC Cyg_ErrNo cyg_devio_get_config(cyg_io_handle_t handle,
cyg_uint32 key,
void* buf,
cyg_uint32* len);
__externC Cyg_ErrNo cyg_devio_set_config(cyg_io_handle_t handle,
cyg_uint32 key,
void* buf,
cyg_uint32* len);
// Initialization macros
#define CHAR_DEVIO_TABLE(_l,_write,_read,_select,_get_config,_set_config) \
cyg_devio_table_t _l = { \
_write, \
_read, \
cyg_devio_bwrite, \
cyg_devio_bread, \
_select, \
_get_config, \
_set_config, \
};
// Note: _bwrite and _bread pass len and pos in terms of blocks, not
// bytes.
#define BLOCK_DEVIO_TABLE(_l,_bwrite,_bread,_select,_get_config,_set_config) \
cyg_devio_table_t _l = { \
cyg_devio_cwrite, \
cyg_devio_cread, \
_bwrite, \
_bread, \
_select, \
_get_config, \
_set_config, \
};
#define DEVIO_TABLE(_l,_write,_read,_select,_get_config,_set_config) \
CHAR_DEVIO_TABLE(_l,_write,_read,_select,_get_config,_set_config)
typedef struct cyg_devtab_entry {
const char *name;
const char *dep_name;
cyg_devio_table_t *handlers;
bool (*init)(struct cyg_devtab_entry *tab);
Cyg_ErrNo (*lookup)(struct cyg_devtab_entry **tab,
struct cyg_devtab_entry *sub_tab,
const char *name);
void *priv;
unsigned long status;
} CYG_HAL_TABLE_TYPE cyg_devtab_entry_t;
#define CYG_DEVTAB_STATUS_AVAIL 0x0001
#define CYG_DEVTAB_STATUS_CHAR 0x1000
#define CYG_DEVTAB_STATUS_BLOCK 0x2000
extern cyg_devtab_entry_t __DEVTAB__[], __DEVTAB_END__;
#define CHAR_DEVTAB_ENTRY(_l,_name,_dep_name,_handlers,_init,_lookup,_priv) \
cyg_devtab_entry_t _l CYG_HAL_TABLE_ENTRY(devtab) = { \
_name, \
_dep_name, \
_handlers, \
_init, \
_lookup, \
_priv, \
CYG_DEVTAB_STATUS_CHAR \
};
#define BLOCK_DEVTAB_ENTRY(_l,_name,_dep_name,_handlers,_init,_lookup,_priv) \
cyg_devtab_entry_t _l CYG_HAL_TABLE_ENTRY(devtab) = { \
_name, \
_dep_name, \
_handlers, \
_init, \
_lookup, \
_priv, \
CYG_DEVTAB_STATUS_BLOCK \
};
#define DEVTAB_ENTRY(_l,_name,_dep_name,_handlers,_init,_lookup,_priv) \
CHAR_DEVTAB_ENTRY(_l,_name,_dep_name,_handlers,_init,_lookup,_priv)
#define DEVTAB_ENTRY_NO_INIT(_l,_name,_dep_name,_handlers,_init,_lookup,_priv) \
cyg_devtab_entry_t _l = { \
_name, \
_dep_name, \
_handlers, \
_init, \
_lookup, \
_priv, \
CYG_DEVTAB_STATUS_CHAR \
};
#endif // CYGONCE_IO_DEVTAB_H
|
