mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

BlockConf: Call backend functions to detect geometry and blocksizes

Browse Source 
geometry: hd_geometry_guess function autodetects the drive geometry.
This patch adds a block backend call, that probes the backing device
geometry. If the inner driver method is implemented and succeeds
(currently only for DASDs), the blkconf_geometry will pass-through
the backing device geometry. Otherwise will fallback to old logic.

blocksize: This patch initializes blocksize properties to 0.
In order to set the property a blkconf_blocksizes was introduced.
If user didn't set physical or logical blocksize, it will
retrieve its value from a driver (only succeeds for DASD), otherwise
it will set default 512 value.

The blkconf_blocksizes call was added to all users of BlkConf.

Signed-off-by: Ekaterina Tumanova <tumanova@linux.vnet.ibm.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1424087278-49393-6-git-send-email-tumanova@linux.vnet.ibm.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Ekaterina Tumanova 2015-02-16 12:47:58 +01:00 committed by Kevin Wolf
parent f0272c4db2
commit 0eb28a4228
10 changed files with 46 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
hw/block/block.c
View File

@ -25,6 +25,30 @@ void blkconf_serial(BlockConf *conf, char **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)

10
hw/block/hd-geometry.c
View File

@ -121,8 +121,16 @@ void hd_geometry_guess(BlockBackend *blk,
int *ptrans)
{
int cylinders, heads, secs, translation;
HDGeometry geo;
if (guess_disk_lchs(blk, &cylinders, &heads, &secs) < 0) {
/* Try to probe the backing device geometry, otherwise fallback
to the old logic. (as of 12/2014 probing only succeeds on DASDs) */
if (blk_probe_geometry(blk, &geo) == 0) {
*pcyls = geo.cylinders;
*psecs = geo.sectors;
*pheads = geo.heads;
translation = BIOS_ATA_TRANSLATION_NONE;
} else if (guess_disk_lchs(blk, &cylinders, &heads, &secs) < 0) {
/* no LCHS guess: use a standard physical disk geometry */
guess_chs_for_size(blk, pcyls, pheads, psecs);
translation = hd_bios_chs_auto_trans(*pcyls, *pheads, *psecs);

1
hw/block/nvme.c
View File

@ -765,6 +765,7 @@ static int nvme_init(PCIDevice *pci_dev)
if (!n->serial) {
return -1;
}
blkconf_blocksizes(&n->conf);
pci_conf = pci_dev->config;
pci_conf[PCI_INTERRUPT_PIN] = 1;

1
hw/block/virtio-blk.c
View File

@ -893,6 +893,7 @@ static void virtio_blk_device_realize(DeviceState *dev, Error **errp)
error_propagate(errp, err);
return;
}
blkconf_blocksizes(&conf->conf);
virtio_init(vdev, "virtio-blk", VIRTIO_ID_BLOCK,
sizeof(struct virtio_blk_config));

3
hw/core/qdev-properties.c
View File

@ -580,7 +580,8 @@ static void set_blocksize(Object *obj, Visitor *v, void *opaque,
error_propagate(errp, local_err);
return;
}
if (value < min || value > max) {
/* value of 0 means "unset" */
if (value && (value < min || value > max)) {
error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE,
dev->id?:"", name, (int64_t)value, min, max);
return;

1
hw/ide/qdev.c
View File

@ -163,6 +163,7 @@ static int ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind)
return -1;
}
blkconf_blocksizes(&dev->conf);
if (dev->conf.logical_block_size != 512) {
error_report("logical_block_size must be 512 for IDE");
return -1;

2
hw/scsi/scsi-disk.c
View File

@ -2251,6 +2251,7 @@ static void scsi_realize(SCSIDevice *dev, Error **errp)
}
blkconf_serial(&s->qdev.conf, &s->serial);
blkconf_blocksizes(&s->qdev.conf);
if (dev->type == TYPE_DISK) {
blkconf_geometry(&dev->conf, NULL, 65535, 255, 255, &err);
if (err) {
@ -2290,6 +2291,7 @@ static void scsi_realize(SCSIDevice *dev, Error **errp)
static void scsi_hd_realize(SCSIDevice *dev, Error **errp)
{
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
blkconf_blocksizes(&s->qdev.conf);
s->qdev.blocksize = s->qdev.conf.logical_block_size;
s->qdev.type = TYPE_DISK;
if (!s->product) {

1
hw/usb/dev-storage.c
View File

@ -611,6 +611,7 @@ static void usb_msd_realize_storage(USBDevice *dev, Error **errp)
}
blkconf_serial(&s->conf, &dev->serial);
blkconf_blocksizes(&s->conf);
/*
* Hack alert: this pretends to be a block device, but it's really

5
include/hw/block/block.h
View File

@ -44,9 +44,9 @@ static inline unsigned int get_physical_block_exp(BlockConf *conf)
#define DEFINE_BLOCK_PROPERTIES(_state, _conf) \
DEFINE_PROP_DRIVE("drive", _state, _conf.blk), \
DEFINE_PROP_BLOCKSIZE("logical_block_size", _state, \
_conf.logical_block_size, 512), \
_conf.logical_block_size), \
DEFINE_PROP_BLOCKSIZE("physical_block_size", _state, \
_conf.physical_block_size, 512), \
_conf.physical_block_size), \
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_UINT32("discard_granularity", _state, \
@ -63,6 +63,7 @@ void blkconf_serial(BlockConf *conf, char **serial);
void blkconf_geometry(BlockConf *conf, int *trans,
unsigned cyls_max, unsigned heads_max, unsigned secs_max,
Error **errp);
void blkconf_blocksizes(BlockConf *conf);
/* Hard disk geometry */

4
include/hw/qdev-properties.h
View File

@ -149,8 +149,8 @@ extern PropertyInfo qdev_prop_arraylen;
LostTickPolicy)
#define DEFINE_PROP_BIOS_CHS_TRANS(_n, _s, _f, _d) \
DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_bios_chs_trans, int)
#define DEFINE_PROP_BLOCKSIZE(_n, _s, _f, _d) \
DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_blocksize, uint16_t)
#define DEFINE_PROP_BLOCKSIZE(_n, _s, _f) \
DEFINE_PROP_DEFAULT(_n, _s, _f, 0, qdev_prop_blocksize, uint16_t)
#define DEFINE_PROP_PCI_HOST_DEVADDR(_n, _s, _f) \
DEFINE_PROP(_n, _s, _f, qdev_prop_pci_host_devaddr, PCIHostDeviceAddress)