]> git.proxmox.com Git - mirror_qemu.git/blame - hw/block/block.c
block/qdev: Allow configuring rerror/werror with qdev properties
[mirror_qemu.git] / hw / block / block.c
CommitLineData
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1/*
2 * Common code for block device models
3 *
4 * Copyright (C) 2012 Red Hat, Inc.
5 *
6 * This work is licensed under the terms of the GNU GPL, version 2 or
7 * later. See the COPYING file in the top-level directory.
8 */
9
80c71a24 10#include "qemu/osdep.h"
9c17d615 11#include "sysemu/blockdev.h"
4be74634 12#include "sysemu/block-backend.h"
0d09e41a 13#include "hw/block/block.h"
da34e65c 14#include "qapi/error.h"
1de7afc9 15#include "qemu/error-report.h"
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16
17void blkconf_serial(BlockConf *conf, char **serial)
18{
19 DriveInfo *dinfo;
20
21 if (!*serial) {
22 /* try to fall back to value set with legacy -drive serial=... */
4be74634 23 dinfo = blk_legacy_dinfo(conf->blk);
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24 if (dinfo) {
25 *serial = g_strdup(dinfo->serial);
26 }
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27 }
28}
b7eb0c9f 29
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30void blkconf_blocksizes(BlockConf *conf)
31{
32 BlockBackend *blk = conf->blk;
33 BlockSizes blocksizes;
34 int backend_ret;
35
36 backend_ret = blk_probe_blocksizes(blk, &blocksizes);
37 /* fill in detected values if they are not defined via qemu command line */
38 if (!conf->physical_block_size) {
39 if (!backend_ret) {
40 conf->physical_block_size = blocksizes.phys;
41 } else {
42 conf->physical_block_size = BDRV_SECTOR_SIZE;
43 }
44 }
45 if (!conf->logical_block_size) {
46 if (!backend_ret) {
47 conf->logical_block_size = blocksizes.log;
48 } else {
49 conf->logical_block_size = BDRV_SECTOR_SIZE;
50 }
51 }
52}
53
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54void blkconf_apply_backend_options(BlockConf *conf)
55{
56 BlockBackend *blk = conf->blk;
8c398252 57 BlockdevOnError rerror, werror;
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58 bool wce;
59
60 switch (conf->wce) {
61 case ON_OFF_AUTO_ON: wce = true; break;
62 case ON_OFF_AUTO_OFF: wce = false; break;
63 case ON_OFF_AUTO_AUTO: wce = blk_enable_write_cache(blk); break;
64 default:
65 abort();
66 }
67
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68 rerror = conf->rerror;
69 if (rerror == BLOCKDEV_ON_ERROR_AUTO) {
70 rerror = blk_get_on_error(blk, true);
71 }
72
73 werror = conf->werror;
74 if (werror == BLOCKDEV_ON_ERROR_AUTO) {
75 werror = blk_get_on_error(blk, false);
76 }
77
f6166a06 78 blk_set_enable_write_cache(blk, wce);
8c398252 79 blk_set_on_error(blk, rerror, werror);
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80}
81
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82void blkconf_geometry(BlockConf *conf, int *ptrans,
83 unsigned cyls_max, unsigned heads_max, unsigned secs_max,
84 Error **errp)
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85{
86 DriveInfo *dinfo;
87
88 if (!conf->cyls && !conf->heads && !conf->secs) {
89 /* try to fall back to value set with legacy -drive cyls=... */
4be74634 90 dinfo = blk_legacy_dinfo(conf->blk);
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91 if (dinfo) {
92 conf->cyls = dinfo->cyls;
93 conf->heads = dinfo->heads;
94 conf->secs = dinfo->secs;
95 if (ptrans) {
96 *ptrans = dinfo->trans;
97 }
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98 }
99 }
100 if (!conf->cyls && !conf->heads && !conf->secs) {
4be74634 101 hd_geometry_guess(conf->blk,
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102 &conf->cyls, &conf->heads, &conf->secs,
103 ptrans);
104 } else if (ptrans && *ptrans == BIOS_ATA_TRANSLATION_AUTO) {
105 *ptrans = hd_bios_chs_auto_trans(conf->cyls, conf->heads, conf->secs);
106 }
107 if (conf->cyls || conf->heads || conf->secs) {
108 if (conf->cyls < 1 || conf->cyls > cyls_max) {
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109 error_setg(errp, "cyls must be between 1 and %u", cyls_max);
110 return;
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111 }
112 if (conf->heads < 1 || conf->heads > heads_max) {
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113 error_setg(errp, "heads must be between 1 and %u", heads_max);
114 return;
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115 }
116 if (conf->secs < 1 || conf->secs > secs_max) {
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117 error_setg(errp, "secs must be between 1 and %u", secs_max);
118 return;
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119 }
120 }
b7eb0c9f 121}