121d07125b
Header guard symbols should match their file name to make guard collisions less likely. Offenders found with scripts/clean-header-guards.pl -vn. Cleaned up with scripts/clean-header-guards.pl, followed by some renaming of new guard symbols picked by the script to better ones. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net>
75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
/*
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* Common code for block device models
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*
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* Copyright (C) 2012 Red Hat, Inc.
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* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or
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* later. See the COPYING file in the top-level directory.
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*/
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#ifndef HW_BLOCK_H
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#define HW_BLOCK_H
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#include "qemu-common.h"
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/* Configuration */
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typedef struct BlockConf {
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BlockBackend *blk;
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uint16_t physical_block_size;
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uint16_t logical_block_size;
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uint16_t min_io_size;
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uint32_t opt_io_size;
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int32_t bootindex;
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uint32_t discard_granularity;
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/* geometry, not all devices use this */
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uint32_t cyls, heads, secs;
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} BlockConf;
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static inline unsigned int get_physical_block_exp(BlockConf *conf)
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{
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unsigned int exp = 0, size;
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for (size = conf->physical_block_size;
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size > conf->logical_block_size;
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size >>= 1) {
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exp++;
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}
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return exp;
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}
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#define DEFINE_BLOCK_PROPERTIES(_state, _conf) \
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DEFINE_PROP_DRIVE("drive", _state, _conf.blk), \
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DEFINE_PROP_BLOCKSIZE("logical_block_size", _state, \
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_conf.logical_block_size), \
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DEFINE_PROP_BLOCKSIZE("physical_block_size", _state, \
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_conf.physical_block_size), \
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DEFINE_PROP_UINT16("min_io_size", _state, _conf.min_io_size, 0), \
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DEFINE_PROP_UINT32("opt_io_size", _state, _conf.opt_io_size, 0), \
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DEFINE_PROP_UINT32("discard_granularity", _state, \
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_conf.discard_granularity, -1)
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#define DEFINE_BLOCK_CHS_PROPERTIES(_state, _conf) \
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DEFINE_PROP_UINT32("cyls", _state, _conf.cyls, 0), \
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DEFINE_PROP_UINT32("heads", _state, _conf.heads, 0), \
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DEFINE_PROP_UINT32("secs", _state, _conf.secs, 0)
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/* Configuration helpers */
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void blkconf_serial(BlockConf *conf, char **serial);
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void blkconf_geometry(BlockConf *conf, int *trans,
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unsigned cyls_max, unsigned heads_max, unsigned secs_max,
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Error **errp);
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void blkconf_blocksizes(BlockConf *conf);
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/* Hard disk geometry */
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void hd_geometry_guess(BlockBackend *blk,
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uint32_t *pcyls, uint32_t *pheads, uint32_t *psecs,
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int *ptrans);
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int hd_bios_chs_auto_trans(uint32_t cyls, uint32_t heads, uint32_t secs);
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#endif
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