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
|
#ifndef CYGONCE_IO_H
#define CYGONCE_IO_H
// ====================================================================
//
// io.h
//
// Device I/O
//
// ====================================================================
// ####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####
//
// ====================================================================
// This file contains the user-level visible I/O interfaces
#include <pkgconf/system.h>
#include <pkgconf/hal.h>
#include <cyg/infra/cyg_type.h>
#ifdef CYGPKG_ERROR
#include <cyg/error/codes.h>
#else
#error I/O subsystem requires 'error' package
#endif
// typedef int Cyg_ErrNo;
#ifdef __cplusplus
extern "C" {
#endif
typedef void *cyg_io_handle_t;
// Lookup a device and return it's handle
Cyg_ErrNo cyg_io_lookup(const char *name,
cyg_io_handle_t *handle);
// Write data to a device
Cyg_ErrNo cyg_io_write(cyg_io_handle_t handle,
const void *buf,
cyg_uint32 *len);
// Read data from a device
Cyg_ErrNo cyg_io_read(cyg_io_handle_t handle,
void *buf,
cyg_uint32 *len);
// Write data to a block device
Cyg_ErrNo cyg_io_bwrite(cyg_io_handle_t handle,
const void *buf,
cyg_uint32 *len,
cyg_uint32 pos);
// Read data from a block device
Cyg_ErrNo cyg_io_bread(cyg_io_handle_t handle,
void *buf,
cyg_uint32 *len,
cyg_uint32 pos);
// Get the configuration of a device
Cyg_ErrNo cyg_io_get_config(cyg_io_handle_t handle,
cyg_uint32 key,
void *buf,
cyg_uint32 *len);
// Change the configuration of a device
Cyg_ErrNo cyg_io_set_config(cyg_io_handle_t handle,
cyg_uint32 key,
const void *buf,
cyg_uint32 *len);
// Test a device for readiness
cyg_bool cyg_io_select(cyg_io_handle_t handle,
cyg_uint32 which,
CYG_ADDRWORD info);
#ifdef __cplusplus
}
#endif
#endif /* CYGONCE_IO_H */
/* EOF io.h */
|
