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
|
/*
* This file is part of the libpayload project.
*
* Copyright (C) 2012 secunet Security Networks AG
*
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*/
#ifndef _STORAGE_STORAGE_H
#define _STORAGE_STORAGE_H
#include <stdint.h>
#include <unistd.h>
#ifndef CONFIG_STORAGE_64BIT_LBA
typedef u32 lba_t;
#else
typedef u64 lba_t;
#endif
typedef enum {
PORT_TYPE_IDE = (1 << 0),
PORT_TYPE_SATA = (1 << 1),
PORT_TYPE_USB = (1 << 2),
} storage_port_t;
typedef enum {
POLL_MEDIUM_ERROR = -3,
POLL_NO_DEVICE = -2,
POLL_ERROR = -1,
POLL_NO_MEDIUM = 0,
POLL_MEDIUM_PRESENT = 1,
} storage_poll_t;
struct storage_dev;
typedef struct storage_dev {
storage_port_t port_type;
storage_poll_t (*poll)(struct storage_dev *);
ssize_t (*read_blocks512)(struct storage_dev *, lba_t start, size_t count, unsigned char *buf);
ssize_t (*write_blocks512)(struct storage_dev *, lba_t start, size_t count, const unsigned char *buf);
void (*detach_device)(struct storage_dev *);
} storage_dev_t;
int storage_device_count(void);
int storage_attach_device(storage_dev_t *dev);
storage_poll_t storage_probe(size_t dev_num);
ssize_t storage_read_blocks512(size_t dev_num, lba_t start, size_t count, unsigned char *buf);
#endif
|
