/* * Common code for block device models * * Copyright (C) 2012 Red Hat, Inc. * * This work is licensed under the terms of the GNU GPL, version 2 or * later. See the COPYING file in the top-level directory. */ #include "sysemu/blockdev.h" #include "sysemu/block-backend.h" #include "hw/block/block.h" #include "qemu/error-report.h" void blkconf_serial(BlockConf *conf, char **serial) { DriveInfo *dinfo; if (!*serial) { /* try to fall back to value set with legacy -drive serial=... */ dinfo = blk_legacy_dinfo(conf->blk); if (dinfo) { *serial = g_strdup(dinfo->serial); } } } void blkconf_blocksizes(BlockConf *conf) { BlockBackend *blk = conf->blk; BlockSizes blocksizes; int backend_ret; backend_ret = blk_probe_blocksizes(blk, &blocksizes); /* fill in detected values if they are not defined via qemu command line */ if (!conf->physical_block_size) { if (!backend_ret) { conf->physical_block_size = blocksizes.phys; } else { conf->physical_block_size = BDRV_SECTOR_SIZE; } } if (!conf->logical_block_size) { if (!backend_ret) { conf->logical_block_size = blocksizes.log; } else { conf->logical_block_size = BDRV_SECTOR_SIZE; } } } void blkconf_geometry(BlockConf *conf, int *ptrans, unsigned cyls_max, unsigned heads_max, unsigned secs_max, Error **errp) { DriveInfo *dinfo; if (!conf->cyls && !conf->heads && !conf->secs) { /* try to fall back to value set with legacy -drive cyls=... */ dinfo = blk_legacy_dinfo(conf->blk); if (dinfo) { conf->cyls = dinfo->cyls; conf->heads = dinfo->heads; conf->secs = dinfo->secs; if (ptrans) { *ptrans = dinfo->trans; } } } if (!conf->cyls && !conf->heads && !conf->secs) { hd_geometry_guess(conf->blk, &conf->cyls, &conf->heads, &conf->secs, ptrans); } else if (ptrans && *ptrans == BIOS_ATA_TRANSLATION_AUTO) { *ptrans = hd_bios_chs_auto_trans(conf->cyls, conf->heads, conf->secs); } if (conf->cyls || conf->heads || conf->secs) { if (conf->cyls < 1 || conf->cyls > cyls_max) { error_setg(errp, "cyls must be between 1 and %u", cyls_max); return; } if (conf->heads < 1 || conf->heads > heads_max) { error_setg(errp, "heads must be between 1 and %u", heads_max); return; } if (conf->secs < 1 || conf->secs > secs_max) { error_setg(errp, "secs must be between 1 and %u", secs_max); return; } } }