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9db1c0f7 MA |
1 | /* |
2 | * Common code for block device models | |
3 | * | |
4 | * Copyright (C) 2012 Red Hat, Inc. | |
5 | * Copyright (c) 2003-2008 Fabrice Bellard | |
6 | * | |
7 | * This work is licensed under the terms of the GNU GPL, version 2 or | |
8 | * later. See the COPYING file in the top-level directory. | |
9 | */ | |
10 | ||
11 | #ifndef HW_BLOCK_COMMON_H | |
12 | #define HW_BLOCK_COMMON_H | |
13 | ||
14 | #include "qemu-common.h" | |
15 | ||
31e404f4 MA |
16 | /* Configuration */ |
17 | ||
18 | typedef struct BlockConf { | |
19 | BlockDriverState *bs; | |
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 | /* geometry, not all devices use this */ | |
27 | uint32_t cyls, heads, secs; | |
28 | } BlockConf; | |
29 | ||
30 | static inline unsigned int get_physical_block_exp(BlockConf *conf) | |
31 | { | |
32 | unsigned int exp = 0, size; | |
33 | ||
34 | for (size = conf->physical_block_size; | |
35 | size > conf->logical_block_size; | |
36 | size >>= 1) { | |
37 | exp++; | |
38 | } | |
39 | ||
40 | return exp; | |
41 | } | |
42 | ||
43 | #define DEFINE_BLOCK_PROPERTIES(_state, _conf) \ | |
44 | DEFINE_PROP_DRIVE("drive", _state, _conf.bs), \ | |
45 | DEFINE_PROP_BLOCKSIZE("logical_block_size", _state, \ | |
46 | _conf.logical_block_size, 512), \ | |
47 | DEFINE_PROP_BLOCKSIZE("physical_block_size", _state, \ | |
48 | _conf.physical_block_size, 512), \ | |
49 | DEFINE_PROP_UINT16("min_io_size", _state, _conf.min_io_size, 0), \ | |
50 | DEFINE_PROP_UINT32("opt_io_size", _state, _conf.opt_io_size, 0), \ | |
51 | DEFINE_PROP_INT32("bootindex", _state, _conf.bootindex, -1), \ | |
52 | DEFINE_PROP_UINT32("discard_granularity", _state, \ | |
215e47b9 | 53 | _conf.discard_granularity, -1) |
31e404f4 MA |
54 | |
55 | #define DEFINE_BLOCK_CHS_PROPERTIES(_state, _conf) \ | |
56 | DEFINE_PROP_UINT32("cyls", _state, _conf.cyls, 0), \ | |
57 | DEFINE_PROP_UINT32("heads", _state, _conf.heads, 0), \ | |
58 | DEFINE_PROP_UINT32("secs", _state, _conf.secs, 0) | |
59 | ||
911525db MA |
60 | /* Configuration helpers */ |
61 | ||
62 | void blkconf_serial(BlockConf *conf, char **serial); | |
b7eb0c9f MA |
63 | int blkconf_geometry(BlockConf *conf, int *trans, |
64 | unsigned cyls_max, unsigned heads_max, unsigned secs_max); | |
31e404f4 | 65 | |
9db1c0f7 MA |
66 | /* Hard disk geometry */ |
67 | ||
2b584959 MA |
68 | #define BIOS_ATA_TRANSLATION_AUTO 0 |
69 | #define BIOS_ATA_TRANSLATION_NONE 1 | |
70 | #define BIOS_ATA_TRANSLATION_LBA 2 | |
71 | #define BIOS_ATA_TRANSLATION_LARGE 3 | |
72 | #define BIOS_ATA_TRANSLATION_RECHS 4 | |
73 | ||
9db1c0f7 | 74 | void hd_geometry_guess(BlockDriverState *bs, |
1f24d7b4 | 75 | uint32_t *pcyls, uint32_t *pheads, uint32_t *psecs, |
e2f3dc2b | 76 | int *ptrans); |
2adc99b2 | 77 | int hd_bios_chs_auto_trans(uint32_t cyls, uint32_t heads, uint32_t secs); |
9db1c0f7 MA |
78 | |
79 | #endif |