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 properly a blkconf_blocksizes was introduced.
If user didn't set physical or logical blocksize, it will
retrieve it's value from a driver (which will return a default 512 for
any backend but DASD).
The blkconf_blocksizes call was added to all users of BlkConf.
Signed-off-by: Ekaterina Tumanova <tuman...@linux.vnet.ibm.com>
Reviewed-by: Markus Armbruster <arm...@redhat.com>
---
hw/block/block.c | 15 +++++++++++++++
hw/block/hd-geometry.c | 10 +++++++++-
hw/block/nvme.c | 1 +
hw/block/virtio-blk.c | 1 +
hw/core/qdev-properties.c | 3 ++-
hw/ide/qdev.c | 1 +
hw/scsi/scsi-disk.c | 1 +
hw/usb/dev-storage.c | 1 +
include/hw/block/block.h | 5 +++--
9 files changed, 34 insertions(+), 4 deletions(-)
diff --git a/hw/block/block.c b/hw/block/block.c
index a625773..a4f4f06 100644
--- a/hw/block/block.c
+++ b/hw/block/block.c
@@ -25,6 +25,21 @@ void blkconf_serial(BlockConf *conf, char **serial)
}
}
+void blkconf_blocksizes(BlockConf *conf)
+{
+ BlockBackend *blk = conf->blk;
+ BlockSizes blocksizes;
+
+ blk_probe_blocksizes(blk, &blocksizes);
+ /* fill in detected values if they are not defined via qemu command line */
+ if (!conf->physical_block_size) {
+ conf->physical_block_size = blocksizes.phys;
+ }
+ if (!conf->logical_block_size) {
+ conf->logical_block_size = blocksizes.log;
+ }
+}
+
void blkconf_geometry(BlockConf *conf, int *ptrans,
unsigned cyls_max, unsigned heads_max, unsigned secs_max,
Error **errp)
diff --git a/hw/block/hd-geometry.c b/hw/block/hd-geometry.c
index 6fcf74d..b187878 100644
--- a/hw/block/hd-geometry.c
+++ b/hw/block/hd-geometry.c
@@ -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);
diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index aa1ed98..2c630bc 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -763,6 +763,7 @@ 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;
diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c
index b19b102..6f01565 100644
--- a/hw/block/virtio-blk.c
+++ b/hw/block/virtio-blk.c
@@ -745,6 +745,7 @@ 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));
diff --git a/hw/core/qdev-properties.c b/hw/core/qdev-properties.c
index 2e47f70..ba81709 100644
--- a/hw/core/qdev-properties.c
+++ b/hw/core/qdev-properties.c
@@ -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;
diff --git a/hw/ide/qdev.c b/hw/ide/qdev.c
index 1ebb58d..353854c 100644
--- a/hw/ide/qdev.c
+++ b/hw/ide/qdev.c
@@ -169,6 +169,7 @@ static int ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind)
}
blkconf_serial(&dev->conf, &dev->serial);
+ blkconf_blocksizes(&dev->conf);
if (kind != IDE_CD) {
blkconf_geometry(&dev->conf, &dev->chs_trans, 65536, 16, 255, &err);
if (err) {
diff --git a/hw/scsi/scsi-disk.c b/hw/scsi/scsi-disk.c
index f65618d..e7244e6 100644
--- a/hw/scsi/scsi-disk.c
+++ b/hw/scsi/scsi-disk.c
@@ -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) {
diff --git a/hw/usb/dev-storage.c b/hw/usb/dev-storage.c
index 4539733..cc02dfd 100644
--- a/hw/usb/dev-storage.c
+++ b/hw/usb/dev-storage.c
@@ -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
diff --git a/include/hw/block/block.h b/include/hw/block/block.h
index 0d0ce9a..3e502a8 100644
--- a/include/hw/block/block.h
+++ b/include/hw/block/block.h
@@ -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, 0), \
DEFINE_PROP_BLOCKSIZE("physical_block_size", _state, \
- _conf.physical_block_size, 512), \
+ _conf.physical_block_size, 0), \
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 */
--
1.8.5.5
