Archipelago » qemu

/* Convenience for block device models */

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;

} 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_UINT16("logical_block_size", _state,                    \

                       _conf.logical_block_size, 512),                  \

    DEFINE_PROP_UINT16("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)