bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1 | /* |
| 2 | * QEMU System Emulator block driver |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 3 | * |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 4 | * Copyright (c) 2003 Fabrice Bellard |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 5 | * |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
| 24 | #ifndef BLOCK_INT_H |
| 25 | #define BLOCK_INT_H |
| 26 | |
pbrook | faf0796 | 2007-11-11 02:51:17 +0000 | [diff] [blame] | 27 | #include "block.h" |
Kevin Wolf | 0e7e198 | 2009-05-18 16:42:10 +0200 | [diff] [blame] | 28 | #include "qemu-option.h" |
Stefan Hajnoczi | 1b7bdbc | 2010-04-10 07:02:42 +0100 | [diff] [blame] | 29 | #include "qemu-queue.h" |
Kevin Wolf | da1fa91 | 2011-07-14 17:27:13 +0200 | [diff] [blame] | 30 | #include "qemu-coroutine.h" |
Christoph Hellwig | c488c7f | 2011-08-25 08:26:10 +0200 | [diff] [blame] | 31 | #include "qemu-timer.h" |
pbrook | faf0796 | 2007-11-11 02:51:17 +0000 | [diff] [blame] | 32 | |
ths | ec36ba1 | 2007-09-16 21:59:02 +0000 | [diff] [blame] | 33 | #define BLOCK_FLAG_ENCRYPT 1 |
ths | ec36ba1 | 2007-09-16 21:59:02 +0000 | [diff] [blame] | 34 | #define BLOCK_FLAG_COMPAT6 4 |
| 35 | |
Kevin Wolf | 0e7e198 | 2009-05-18 16:42:10 +0200 | [diff] [blame] | 36 | #define BLOCK_OPT_SIZE "size" |
| 37 | #define BLOCK_OPT_ENCRYPT "encryption" |
| 38 | #define BLOCK_OPT_COMPAT6 "compat6" |
| 39 | #define BLOCK_OPT_BACKING_FILE "backing_file" |
| 40 | #define BLOCK_OPT_BACKING_FMT "backing_fmt" |
Kevin Wolf | 73c632e | 2009-05-19 17:57:21 +0200 | [diff] [blame] | 41 | #define BLOCK_OPT_CLUSTER_SIZE "cluster_size" |
Stefan Hajnoczi | 75411d2 | 2010-12-06 16:08:00 +0000 | [diff] [blame] | 42 | #define BLOCK_OPT_TABLE_SIZE "table_size" |
Kevin Wolf | a35e1c1 | 2009-08-17 15:50:10 +0200 | [diff] [blame] | 43 | #define BLOCK_OPT_PREALLOC "preallocation" |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 44 | #define BLOCK_OPT_SUBFMT "subformat" |
Kevin Wolf | 0e7e198 | 2009-05-18 16:42:10 +0200 | [diff] [blame] | 45 | |
aliguori | 6bbff9a | 2009-03-20 18:25:59 +0000 | [diff] [blame] | 46 | typedef struct AIOPool { |
| 47 | void (*cancel)(BlockDriverAIOCB *acb); |
| 48 | int aiocb_size; |
| 49 | BlockDriverAIOCB *free_aiocb; |
| 50 | } AIOPool; |
| 51 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 52 | struct BlockDriver { |
| 53 | const char *format_name; |
| 54 | int instance_size; |
| 55 | int (*bdrv_probe)(const uint8_t *buf, int buf_size, const char *filename); |
Christoph Hellwig | 508c7cb | 2009-06-15 14:04:22 +0200 | [diff] [blame] | 56 | int (*bdrv_probe_device)(const char *filename); |
Kevin Wolf | 66f82ce | 2010-04-14 14:17:38 +0200 | [diff] [blame] | 57 | int (*bdrv_open)(BlockDriverState *bs, int flags); |
| 58 | int (*bdrv_file_open)(BlockDriverState *bs, const char *filename, int flags); |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 59 | int (*bdrv_read)(BlockDriverState *bs, int64_t sector_num, |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 60 | uint8_t *buf, int nb_sectors); |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 61 | int (*bdrv_write)(BlockDriverState *bs, int64_t sector_num, |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 62 | const uint8_t *buf, int nb_sectors); |
bellard | e2731ad | 2004-09-18 19:32:11 +0000 | [diff] [blame] | 63 | void (*bdrv_close)(BlockDriverState *bs); |
Kevin Wolf | 0e7e198 | 2009-05-18 16:42:10 +0200 | [diff] [blame] | 64 | int (*bdrv_create)(const char *filename, QEMUOptionParameter *options); |
Kevin Wolf | 205ef79 | 2010-10-21 16:43:43 +0200 | [diff] [blame] | 65 | int (*bdrv_flush)(BlockDriverState *bs); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 66 | int (*bdrv_is_allocated)(BlockDriverState *bs, int64_t sector_num, |
| 67 | int nb_sectors, int *pnum); |
| 68 | int (*bdrv_set_key)(BlockDriverState *bs, const char *key); |
bellard | 95389c8 | 2005-12-18 18:28:15 +0000 | [diff] [blame] | 69 | int (*bdrv_make_empty)(BlockDriverState *bs); |
bellard | 83f6409 | 2006-08-01 16:21:11 +0000 | [diff] [blame] | 70 | /* aio */ |
aliguori | f141eaf | 2009-04-07 18:43:24 +0000 | [diff] [blame] | 71 | BlockDriverAIOCB *(*bdrv_aio_readv)(BlockDriverState *bs, |
| 72 | int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, |
pbrook | ce1a14d | 2006-08-07 02:38:06 +0000 | [diff] [blame] | 73 | BlockDriverCompletionFunc *cb, void *opaque); |
aliguori | f141eaf | 2009-04-07 18:43:24 +0000 | [diff] [blame] | 74 | BlockDriverAIOCB *(*bdrv_aio_writev)(BlockDriverState *bs, |
| 75 | int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, |
pbrook | ce1a14d | 2006-08-07 02:38:06 +0000 | [diff] [blame] | 76 | BlockDriverCompletionFunc *cb, void *opaque); |
Christoph Hellwig | b2e12bc | 2009-09-04 19:01:49 +0200 | [diff] [blame] | 77 | BlockDriverAIOCB *(*bdrv_aio_flush)(BlockDriverState *bs, |
| 78 | BlockDriverCompletionFunc *cb, void *opaque); |
Christoph Hellwig | bb8bf76 | 2010-12-16 19:36:31 +0100 | [diff] [blame] | 79 | int (*bdrv_discard)(BlockDriverState *bs, int64_t sector_num, |
| 80 | int nb_sectors); |
bellard | 83f6409 | 2006-08-01 16:21:11 +0000 | [diff] [blame] | 81 | |
Kevin Wolf | da1fa91 | 2011-07-14 17:27:13 +0200 | [diff] [blame] | 82 | int coroutine_fn (*bdrv_co_readv)(BlockDriverState *bs, |
| 83 | int64_t sector_num, int nb_sectors, QEMUIOVector *qiov); |
| 84 | int coroutine_fn (*bdrv_co_writev)(BlockDriverState *bs, |
| 85 | int64_t sector_num, int nb_sectors, QEMUIOVector *qiov); |
| 86 | |
Kevin Wolf | 40b4f53 | 2009-09-09 17:53:37 +0200 | [diff] [blame] | 87 | int (*bdrv_aio_multiwrite)(BlockDriverState *bs, BlockRequest *reqs, |
| 88 | int num_reqs); |
| 89 | int (*bdrv_merge_requests)(BlockDriverState *bs, BlockRequest* a, |
| 90 | BlockRequest *b); |
| 91 | |
| 92 | |
bellard | 83f6409 | 2006-08-01 16:21:11 +0000 | [diff] [blame] | 93 | const char *protocol_name; |
bellard | 83f6409 | 2006-08-01 16:21:11 +0000 | [diff] [blame] | 94 | int (*bdrv_truncate)(BlockDriverState *bs, int64_t offset); |
| 95 | int64_t (*bdrv_getlength)(BlockDriverState *bs); |
Fam Zheng | 4a1d5e1 | 2011-07-12 19:56:39 +0800 | [diff] [blame] | 96 | int64_t (*bdrv_get_allocated_file_size)(BlockDriverState *bs); |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 97 | int (*bdrv_write_compressed)(BlockDriverState *bs, int64_t sector_num, |
bellard | faea38e | 2006-08-05 21:31:00 +0000 | [diff] [blame] | 98 | const uint8_t *buf, int nb_sectors); |
| 99 | |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 100 | int (*bdrv_snapshot_create)(BlockDriverState *bs, |
bellard | faea38e | 2006-08-05 21:31:00 +0000 | [diff] [blame] | 101 | QEMUSnapshotInfo *sn_info); |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 102 | int (*bdrv_snapshot_goto)(BlockDriverState *bs, |
bellard | faea38e | 2006-08-05 21:31:00 +0000 | [diff] [blame] | 103 | const char *snapshot_id); |
| 104 | int (*bdrv_snapshot_delete)(BlockDriverState *bs, const char *snapshot_id); |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 105 | int (*bdrv_snapshot_list)(BlockDriverState *bs, |
bellard | faea38e | 2006-08-05 21:31:00 +0000 | [diff] [blame] | 106 | QEMUSnapshotInfo **psn_info); |
edison | 51ef672 | 2010-09-21 19:58:41 -0700 | [diff] [blame] | 107 | int (*bdrv_snapshot_load_tmp)(BlockDriverState *bs, |
| 108 | const char *snapshot_name); |
bellard | faea38e | 2006-08-05 21:31:00 +0000 | [diff] [blame] | 109 | int (*bdrv_get_info)(BlockDriverState *bs, BlockDriverInfo *bdi); |
bellard | 83f6409 | 2006-08-01 16:21:11 +0000 | [diff] [blame] | 110 | |
Christoph Hellwig | 45566e9 | 2009-07-10 23:11:57 +0200 | [diff] [blame] | 111 | int (*bdrv_save_vmstate)(BlockDriverState *bs, const uint8_t *buf, |
| 112 | int64_t pos, int size); |
| 113 | int (*bdrv_load_vmstate)(BlockDriverState *bs, uint8_t *buf, |
| 114 | int64_t pos, int size); |
aliguori | 178e08a | 2009-04-05 19:10:55 +0000 | [diff] [blame] | 115 | |
Kevin Wolf | 756e673 | 2010-01-12 12:55:17 +0100 | [diff] [blame] | 116 | int (*bdrv_change_backing_file)(BlockDriverState *bs, |
| 117 | const char *backing_file, const char *backing_fmt); |
| 118 | |
bellard | 19cb373 | 2006-08-19 11:45:59 +0000 | [diff] [blame] | 119 | /* removable device specific */ |
| 120 | int (*bdrv_is_inserted)(BlockDriverState *bs); |
| 121 | int (*bdrv_media_changed)(BlockDriverState *bs); |
Markus Armbruster | 822e1cd | 2011-07-20 18:23:42 +0200 | [diff] [blame] | 122 | void (*bdrv_eject)(BlockDriverState *bs, int eject_flag); |
Markus Armbruster | 025e849 | 2011-09-06 18:58:47 +0200 | [diff] [blame] | 123 | void (*bdrv_lock_medium)(BlockDriverState *bs, bool locked); |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 124 | |
ths | 985a03b | 2007-12-24 16:10:43 +0000 | [diff] [blame] | 125 | /* to control generic scsi devices */ |
| 126 | int (*bdrv_ioctl)(BlockDriverState *bs, unsigned long int req, void *buf); |
aliguori | 221f715 | 2009-03-28 17:28:41 +0000 | [diff] [blame] | 127 | BlockDriverAIOCB *(*bdrv_aio_ioctl)(BlockDriverState *bs, |
| 128 | unsigned long int req, void *buf, |
| 129 | BlockDriverCompletionFunc *cb, void *opaque); |
ths | 985a03b | 2007-12-24 16:10:43 +0000 | [diff] [blame] | 130 | |
Kevin Wolf | 0e7e198 | 2009-05-18 16:42:10 +0200 | [diff] [blame] | 131 | /* List of options for creating images, terminated by name == NULL */ |
| 132 | QEMUOptionParameter *create_options; |
| 133 | |
aliguori | 5eb4563 | 2009-03-28 17:55:10 +0000 | [diff] [blame] | 134 | |
Kevin Wolf | 9ac228e | 2010-06-29 12:37:54 +0200 | [diff] [blame] | 135 | /* |
| 136 | * Returns 0 for completed check, -errno for internal errors. |
| 137 | * The check results are stored in result. |
| 138 | */ |
| 139 | int (*bdrv_check)(BlockDriverState* bs, BdrvCheckResult *result); |
aliguori | e97fc19 | 2009-04-21 23:11:50 +0000 | [diff] [blame] | 140 | |
Kevin Wolf | 8b9b0cc | 2010-03-15 17:27:00 +0100 | [diff] [blame] | 141 | void (*bdrv_debug_event)(BlockDriverState *bs, BlkDebugEvent event); |
| 142 | |
Kevin Wolf | 336c1c1 | 2010-07-28 11:26:29 +0200 | [diff] [blame] | 143 | /* |
| 144 | * Returns 1 if newly created images are guaranteed to contain only |
| 145 | * zeros, 0 otherwise. |
| 146 | */ |
| 147 | int (*bdrv_has_zero_init)(BlockDriverState *bs); |
Kevin Wolf | 12c09b8 | 2009-11-30 16:54:15 +0100 | [diff] [blame] | 148 | |
Stefan Hajnoczi | 8a22f02 | 2010-04-13 10:29:33 +0100 | [diff] [blame] | 149 | QLIST_ENTRY(BlockDriver) list; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 150 | }; |
| 151 | |
| 152 | struct BlockDriverState { |
bellard | d15a771 | 2006-08-06 13:35:09 +0000 | [diff] [blame] | 153 | int64_t total_sectors; /* if we are reading a disk image, give its |
| 154 | size in sectors */ |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 155 | int read_only; /* if true, the media is read only */ |
Naphtali Sprei | 4dca4b6 | 2010-02-14 13:39:18 +0200 | [diff] [blame] | 156 | int keep_read_only; /* if true, the media was requested to stay read only */ |
| 157 | int open_flags; /* flags used to open the file, re-used for re-open */ |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 158 | int encrypted; /* if true, the media is encrypted */ |
aliguori | c0f4ce7 | 2009-03-05 23:01:01 +0000 | [diff] [blame] | 159 | int valid_key; /* if true, a valid encryption key has been set */ |
ths | 985a03b | 2007-12-24 16:10:43 +0000 | [diff] [blame] | 160 | int sg; /* if true, the device is a /dev/sg* */ |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 161 | |
bellard | 19cb373 | 2006-08-19 11:45:59 +0000 | [diff] [blame] | 162 | BlockDriver *drv; /* NULL means no media */ |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 163 | void *opaque; |
| 164 | |
Markus Armbruster | fa879d6 | 2011-08-03 15:07:40 +0200 | [diff] [blame] | 165 | void *dev; /* attached device model, if any */ |
| 166 | /* TODO change to DeviceState when all users are qdevified */ |
Markus Armbruster | 0e49de5 | 2011-08-03 15:07:41 +0200 | [diff] [blame] | 167 | const BlockDevOps *dev_ops; |
| 168 | void *dev_opaque; |
Markus Armbruster | 18846de | 2010-06-29 16:58:30 +0200 | [diff] [blame] | 169 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 170 | char filename[1024]; |
| 171 | char backing_file[1024]; /* if non zero, the image is a diff of |
| 172 | this file image */ |
aliguori | 5eb4563 | 2009-03-28 17:55:10 +0000 | [diff] [blame] | 173 | char backing_format[16]; /* if non-zero and backing_file exists */ |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 174 | int is_temporary; |
bellard | 19cb373 | 2006-08-19 11:45:59 +0000 | [diff] [blame] | 175 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 176 | BlockDriverState *backing_hd; |
Kevin Wolf | 66f82ce | 2010-04-14 14:17:38 +0200 | [diff] [blame] | 177 | BlockDriverState *file; |
| 178 | |
pbrook | ce1a14d | 2006-08-07 02:38:06 +0000 | [diff] [blame] | 179 | /* async read/write emulation */ |
bellard | 83f6409 | 2006-08-01 16:21:11 +0000 | [diff] [blame] | 180 | |
pbrook | ce1a14d | 2006-08-07 02:38:06 +0000 | [diff] [blame] | 181 | void *sync_aiocb; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 182 | |
ths | a36e69d | 2007-12-02 05:18:19 +0000 | [diff] [blame] | 183 | /* I/O stats (display with "info blockstats"). */ |
Christoph Hellwig | a597e79 | 2011-08-25 08:26:01 +0200 | [diff] [blame] | 184 | uint64_t nr_bytes[BDRV_MAX_IOTYPE]; |
| 185 | uint64_t nr_ops[BDRV_MAX_IOTYPE]; |
Christoph Hellwig | c488c7f | 2011-08-25 08:26:10 +0200 | [diff] [blame] | 186 | uint64_t total_time_ns[BDRV_MAX_IOTYPE]; |
Kevin Wolf | 294cc35 | 2010-04-28 14:34:01 +0200 | [diff] [blame] | 187 | uint64_t wr_highest_sector; |
ths | a36e69d | 2007-12-02 05:18:19 +0000 | [diff] [blame] | 188 | |
aliguori | 71d0770 | 2009-03-03 17:37:16 +0000 | [diff] [blame] | 189 | /* Whether the disk can expand beyond total_sectors */ |
| 190 | int growable; |
| 191 | |
aliguori | e268ca5 | 2009-04-22 20:20:00 +0000 | [diff] [blame] | 192 | /* the memory alignment required for the buffers handled by this driver */ |
| 193 | int buffer_alignment; |
| 194 | |
Christoph Hellwig | e900a7b | 2009-09-04 19:01:15 +0200 | [diff] [blame] | 195 | /* do we need to tell the quest if we have a volatile write cache? */ |
| 196 | int enable_write_cache; |
| 197 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 198 | /* NOTE: the following infos are only hints for real hardware |
| 199 | drivers. They are not used by the block driver */ |
bellard | 46d4767 | 2004-11-16 01:45:27 +0000 | [diff] [blame] | 200 | int cyls, heads, secs, translation; |
Markus Armbruster | abd7f68 | 2010-06-02 18:55:17 +0200 | [diff] [blame] | 201 | BlockErrorAction on_read_error, on_write_error; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 202 | char device_name[32]; |
Jan Kiszka | c6d2283 | 2009-11-30 18:21:20 +0100 | [diff] [blame] | 203 | unsigned long *dirty_bitmap; |
Liran Schour | aaa0eb7 | 2010-01-26 10:31:48 +0200 | [diff] [blame] | 204 | int64_t dirty_count; |
Marcelo Tosatti | db593f2 | 2011-01-26 12:12:34 -0200 | [diff] [blame] | 205 | int in_use; /* users other than guest access, eg. block migration */ |
Stefan Hajnoczi | 1b7bdbc | 2010-04-10 07:02:42 +0100 | [diff] [blame] | 206 | QTAILQ_ENTRY(BlockDriverState) list; |
aliguori | b0a7b12 | 2009-02-11 15:20:29 +0000 | [diff] [blame] | 207 | void *private; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 208 | }; |
| 209 | |
bellard | 83f6409 | 2006-08-01 16:21:11 +0000 | [diff] [blame] | 210 | struct BlockDriverAIOCB { |
aliguori | 6bbff9a | 2009-03-20 18:25:59 +0000 | [diff] [blame] | 211 | AIOPool *pool; |
bellard | 83f6409 | 2006-08-01 16:21:11 +0000 | [diff] [blame] | 212 | BlockDriverState *bs; |
| 213 | BlockDriverCompletionFunc *cb; |
pbrook | ce1a14d | 2006-08-07 02:38:06 +0000 | [diff] [blame] | 214 | void *opaque; |
| 215 | BlockDriverAIOCB *next; |
bellard | 83f6409 | 2006-08-01 16:21:11 +0000 | [diff] [blame] | 216 | }; |
| 217 | |
bellard | 95389c8 | 2005-12-18 18:28:15 +0000 | [diff] [blame] | 218 | void get_tmp_filename(char *filename, int size); |
| 219 | |
Christoph Hellwig | c16b5a2 | 2009-05-25 12:37:32 +0200 | [diff] [blame] | 220 | void *qemu_aio_get(AIOPool *pool, BlockDriverState *bs, |
| 221 | BlockDriverCompletionFunc *cb, void *opaque); |
pbrook | ce1a14d | 2006-08-07 02:38:06 +0000 | [diff] [blame] | 222 | void qemu_aio_release(void *p); |
| 223 | |
Christoph Hellwig | 508c7cb | 2009-06-15 14:04:22 +0200 | [diff] [blame] | 224 | #ifdef _WIN32 |
| 225 | int is_windows_drive(const char *filename); |
| 226 | #endif |
| 227 | |
Christoph Hellwig | 428c149 | 2010-02-10 23:37:09 +0100 | [diff] [blame] | 228 | typedef struct BlockConf { |
Markus Armbruster | f8b6cc0 | 2010-05-05 16:36:52 +0200 | [diff] [blame] | 229 | BlockDriverState *bs; |
Christoph Hellwig | 428c149 | 2010-02-10 23:37:09 +0100 | [diff] [blame] | 230 | uint16_t physical_block_size; |
Christoph Hellwig | 8cfacf0 | 2010-03-04 14:20:17 +0100 | [diff] [blame] | 231 | uint16_t logical_block_size; |
Christoph Hellwig | 428c149 | 2010-02-10 23:37:09 +0100 | [diff] [blame] | 232 | uint16_t min_io_size; |
| 233 | uint32_t opt_io_size; |
Gleb Natapov | 1ca4d09 | 2010-12-08 13:35:05 +0200 | [diff] [blame] | 234 | int32_t bootindex; |
Christoph Hellwig | bb8bf76 | 2010-12-16 19:36:31 +0100 | [diff] [blame] | 235 | uint32_t discard_granularity; |
Christoph Hellwig | 428c149 | 2010-02-10 23:37:09 +0100 | [diff] [blame] | 236 | } BlockConf; |
| 237 | |
| 238 | static inline unsigned int get_physical_block_exp(BlockConf *conf) |
| 239 | { |
| 240 | unsigned int exp = 0, size; |
| 241 | |
Christoph Hellwig | 1e297c3 | 2010-06-15 17:52:52 +0200 | [diff] [blame] | 242 | for (size = conf->physical_block_size; |
| 243 | size > conf->logical_block_size; |
| 244 | size >>= 1) { |
Christoph Hellwig | 428c149 | 2010-02-10 23:37:09 +0100 | [diff] [blame] | 245 | exp++; |
| 246 | } |
| 247 | |
| 248 | return exp; |
| 249 | } |
| 250 | |
| 251 | #define DEFINE_BLOCK_PROPERTIES(_state, _conf) \ |
Markus Armbruster | f8b6cc0 | 2010-05-05 16:36:52 +0200 | [diff] [blame] | 252 | DEFINE_PROP_DRIVE("drive", _state, _conf.bs), \ |
Christoph Hellwig | 8cfacf0 | 2010-03-04 14:20:17 +0100 | [diff] [blame] | 253 | DEFINE_PROP_UINT16("logical_block_size", _state, \ |
| 254 | _conf.logical_block_size, 512), \ |
Christoph Hellwig | 428c149 | 2010-02-10 23:37:09 +0100 | [diff] [blame] | 255 | DEFINE_PROP_UINT16("physical_block_size", _state, \ |
| 256 | _conf.physical_block_size, 512), \ |
Christoph Hellwig | 5545949 | 2010-07-23 09:35:04 +0200 | [diff] [blame] | 257 | DEFINE_PROP_UINT16("min_io_size", _state, _conf.min_io_size, 0), \ |
Gleb Natapov | 1ca4d09 | 2010-12-08 13:35:05 +0200 | [diff] [blame] | 258 | DEFINE_PROP_UINT32("opt_io_size", _state, _conf.opt_io_size, 0), \ |
Christoph Hellwig | bb8bf76 | 2010-12-16 19:36:31 +0100 | [diff] [blame] | 259 | DEFINE_PROP_INT32("bootindex", _state, _conf.bootindex, -1), \ |
| 260 | DEFINE_PROP_UINT32("discard_granularity", _state, \ |
| 261 | _conf.discard_granularity, 0) |
Christoph Hellwig | 428c149 | 2010-02-10 23:37:09 +0100 | [diff] [blame] | 262 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 263 | #endif /* BLOCK_INT_H */ |