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
|
/*
* Common code for block device models
*
* Copyright (C) 2012 Red Hat, Inc.
* Copyright (c) 2003-2008 Fabrice Bellard
*
* This work is licensed under the terms of the GNU GPL, version 2 or
* later. See the COPYING file in the top-level directory.
*/
#ifndef HW_BLOCK_COMMON_H
#define HW_BLOCK_COMMON_H
#include "qemu-common.h"
/* Configuration */
typedef struct BlockConf {
BlockDriverState *bs;
uint16_t physical_block_size;
uint16_t logical_block_size;
uint16_t min_io_size;
uint32_t opt_io_size;
int32_t bootindex;
uint32_t discard_granularity;
/* geometry, not all devices use this */
uint32_t cyls, heads, secs;
} BlockConf;
static inline unsigned int get_physical_block_exp(BlockConf *conf)
{
unsigned int exp = 0, size;
for (size = conf->physical_block_size;
size > conf->logical_block_size;
size >>= 1) {
exp++;
}
return exp;
}
#define DEFINE_BLOCK_PROPERTIES(_state, _conf) \
DEFINE_PROP_DRIVE("drive", _state, _conf.bs), \
DEFINE_PROP_BLOCKSIZE("logical_block_size", _state, \
_conf.logical_block_size, 512), \
DEFINE_PROP_BLOCKSIZE("physical_block_size", _state, \
_conf.physical_block_size, 512), \
DEFINE_PROP_UINT16("min_io_size", _state, _conf.min_io_size, 0), \
DEFINE_PROP_UINT32("opt_io_size", _state, _conf.opt_io_size, 0), \
DEFINE_PROP_INT32("bootindex", _state, _conf.bootindex, -1), \
DEFINE_PROP_UINT32("discard_granularity", _state, \
_conf.discard_granularity, 0)
#define DEFINE_BLOCK_CHS_PROPERTIES(_state, _conf) \
DEFINE_PROP_UINT32("cyls", _state, _conf.cyls, 0), \
DEFINE_PROP_UINT32("heads", _state, _conf.heads, 0), \
DEFINE_PROP_UINT32("secs", _state, _conf.secs, 0)
/* Configuration helpers */
void blkconf_serial(BlockConf *conf, char **serial);
int blkconf_geometry(BlockConf *conf, int *trans,
unsigned cyls_max, unsigned heads_max, unsigned secs_max);
/* Hard disk geometry */
#define BIOS_ATA_TRANSLATION_AUTO 0
#define BIOS_ATA_TRANSLATION_NONE 1
#define BIOS_ATA_TRANSLATION_LBA 2
#define BIOS_ATA_TRANSLATION_LARGE 3
#define BIOS_ATA_TRANSLATION_RECHS 4
void hd_geometry_guess(BlockDriverState *bs,
uint32_t *pcyls, uint32_t *pheads, uint32_t *psecs,
int *ptrans);
int hd_bios_chs_auto_trans(uint32_t cyls, uint32_t heads, uint32_t secs);
#endif
|
