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11#ifndef HW_BLOCK_H
12#define HW_BLOCK_H
13
14#include "qemu-common.h"
15
16
17
18typedef struct BlockConf {
19 BlockBackend *blk;
20 uint16_t physical_block_size;
21 uint16_t logical_block_size;
22 uint16_t min_io_size;
23 uint32_t opt_io_size;
24 int32_t bootindex;
25 uint32_t discard_granularity;
26
27 uint32_t cyls, heads, secs;
28 OnOffAuto wce;
29 BlockdevOnError rerror;
30 BlockdevOnError werror;
31} BlockConf;
32
33static inline unsigned int get_physical_block_exp(BlockConf *conf)
34{
35 unsigned int exp = 0, size;
36
37 for (size = conf->physical_block_size;
38 size > conf->logical_block_size;
39 size >>= 1) {
40 exp++;
41 }
42
43 return exp;
44}
45
46#define DEFINE_BLOCK_PROPERTIES(_state, _conf) \
47 DEFINE_PROP_DRIVE("drive", _state, _conf.blk), \
48 DEFINE_PROP_BLOCKSIZE("logical_block_size", _state, \
49 _conf.logical_block_size), \
50 DEFINE_PROP_BLOCKSIZE("physical_block_size", _state, \
51 _conf.physical_block_size), \
52 DEFINE_PROP_UINT16("min_io_size", _state, _conf.min_io_size, 0), \
53 DEFINE_PROP_UINT32("opt_io_size", _state, _conf.opt_io_size, 0), \
54 DEFINE_PROP_UINT32("discard_granularity", _state, \
55 _conf.discard_granularity, -1), \
56 DEFINE_PROP_ON_OFF_AUTO("write-cache", _state, _conf.wce, ON_OFF_AUTO_AUTO)
57
58#define DEFINE_BLOCK_CHS_PROPERTIES(_state, _conf) \
59 DEFINE_PROP_UINT32("cyls", _state, _conf.cyls, 0), \
60 DEFINE_PROP_UINT32("heads", _state, _conf.heads, 0), \
61 DEFINE_PROP_UINT32("secs", _state, _conf.secs, 0)
62
63#define DEFINE_BLOCK_ERROR_PROPERTIES(_state, _conf) \
64 DEFINE_PROP_BLOCKDEV_ON_ERROR("rerror", _state, _conf.rerror, \
65 BLOCKDEV_ON_ERROR_AUTO), \
66 DEFINE_PROP_BLOCKDEV_ON_ERROR("werror", _state, _conf.werror, \
67 BLOCKDEV_ON_ERROR_AUTO)
68
69
70
71void blkconf_serial(BlockConf *conf, char **serial);
72void blkconf_geometry(BlockConf *conf, int *trans,
73 unsigned cyls_max, unsigned heads_max, unsigned secs_max,
74 Error **errp);
75void blkconf_blocksizes(BlockConf *conf);
76void blkconf_apply_backend_options(BlockConf *conf);
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78
79
80void hd_geometry_guess(BlockBackend *blk,
81 uint32_t *pcyls, uint32_t *pheads, uint32_t *psecs,
82 int *ptrans);
83int hd_bios_chs_auto_trans(uint32_t cyls, uint32_t heads, uint32_t secs);
84
85#endif
86