qdev: Decouple qdev_prop_drive from DriveInfo
Make the property point to BlockDriverState, cutting out the DriveInfo
middleman. This prepares the ground for block devices that don't have
a DriveInfo.
Currently all user-defined ones have a DriveInfo, because the only way
to define one is -drive & friends (they go through drive_init()).
DriveInfo is closely tied to -drive, and like -drive, it mixes
information about host and guest part of the block device. I'm
working towards a new way to define block devices, with clean
host/guest separation, and I need to get DriveInfo out of the way for
that.
Fortunately, the device models are perfectly happy with
BlockDriverState, except for two places: ide_drive_initfn() and
scsi_disk_initfn() need to check the DriveInfo for a serial number set
with legacy -drive serial=... Use drive_get_by_blockdev() there.
Device model code should now use DriveInfo only when explicitly
dealing with drives defined the old way, i.e. without -device.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
diff --git a/block_int.h b/block_int.h
index b64a009..e60aed4 100644
--- a/block_int.h
+++ b/block_int.h
@@ -210,10 +210,8 @@
int is_windows_drive(const char *filename);
#endif
-struct DriveInfo;
-
typedef struct BlockConf {
- struct DriveInfo *dinfo;
+ BlockDriverState *bs;
uint16_t physical_block_size;
uint16_t logical_block_size;
uint16_t min_io_size;
@@ -234,7 +232,7 @@
}
#define DEFINE_BLOCK_PROPERTIES(_state, _conf) \
- DEFINE_PROP_DRIVE("drive", _state, _conf.dinfo), \
+ 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, \
diff --git a/hw/fdc.c b/hw/fdc.c
index 45a876d..08712bc 100644
--- a/hw/fdc.c
+++ b/hw/fdc.c
@@ -80,7 +80,6 @@
} FDiskFlags;
typedef struct FDrive {
- DriveInfo *dinfo;
BlockDriverState *bs;
/* Drive status */
FDriveType drive;
@@ -100,7 +99,6 @@
static void fd_init(FDrive *drv)
{
/* Drive */
- drv->bs = drv->dinfo ? drv->dinfo->bdrv : NULL;
drv->drive = FDRIVE_DRV_NONE;
drv->perpendicular = 0;
/* Disk */
@@ -1862,10 +1860,10 @@
dev = isa_create("isa-fdc");
if (fds[0]) {
- qdev_prop_set_drive(&dev->qdev, "driveA", fds[0]);
+ qdev_prop_set_drive(&dev->qdev, "driveA", fds[0]->bdrv);
}
if (fds[1]) {
- qdev_prop_set_drive(&dev->qdev, "driveB", fds[1]);
+ qdev_prop_set_drive(&dev->qdev, "driveB", fds[1]->bdrv);
}
if (qdev_init(&dev->qdev) < 0)
return NULL;
@@ -1884,10 +1882,10 @@
fdctrl = &sys->state;
fdctrl->dma_chann = dma_chann; /* FIXME */
if (fds[0]) {
- qdev_prop_set_drive(dev, "driveA", fds[0]);
+ qdev_prop_set_drive(dev, "driveA", fds[0]->bdrv);
}
if (fds[1]) {
- qdev_prop_set_drive(dev, "driveB", fds[1]);
+ qdev_prop_set_drive(dev, "driveB", fds[1]->bdrv);
}
qdev_init_nofail(dev);
sysbus_connect_irq(&sys->busdev, 0, irq);
@@ -1905,7 +1903,7 @@
dev = qdev_create(NULL, "SUNW,fdtwo");
if (fds[0]) {
- qdev_prop_set_drive(dev, "drive", fds[0]);
+ qdev_prop_set_drive(dev, "drive", fds[0]->bdrv);
}
qdev_init_nofail(dev);
sys = DO_UPCAST(FDCtrlSysBus, busdev.qdev, dev);
@@ -2030,8 +2028,8 @@
.qdev.vmsd = &vmstate_isa_fdc,
.qdev.reset = fdctrl_external_reset_isa,
.qdev.props = (Property[]) {
- DEFINE_PROP_DRIVE("driveA", FDCtrlISABus, state.drives[0].dinfo),
- DEFINE_PROP_DRIVE("driveB", FDCtrlISABus, state.drives[1].dinfo),
+ DEFINE_PROP_DRIVE("driveA", FDCtrlISABus, state.drives[0].bs),
+ DEFINE_PROP_DRIVE("driveB", FDCtrlISABus, state.drives[1].bs),
DEFINE_PROP_END_OF_LIST(),
},
};
@@ -2053,8 +2051,8 @@
.qdev.vmsd = &vmstate_sysbus_fdc,
.qdev.reset = fdctrl_external_reset_sysbus,
.qdev.props = (Property[]) {
- DEFINE_PROP_DRIVE("driveA", FDCtrlSysBus, state.drives[0].dinfo),
- DEFINE_PROP_DRIVE("driveB", FDCtrlSysBus, state.drives[1].dinfo),
+ DEFINE_PROP_DRIVE("driveA", FDCtrlSysBus, state.drives[0].bs),
+ DEFINE_PROP_DRIVE("driveB", FDCtrlSysBus, state.drives[1].bs),
DEFINE_PROP_END_OF_LIST(),
},
};
@@ -2066,7 +2064,7 @@
.qdev.vmsd = &vmstate_sysbus_fdc,
.qdev.reset = fdctrl_external_reset_sysbus,
.qdev.props = (Property[]) {
- DEFINE_PROP_DRIVE("drive", FDCtrlSysBus, state.drives[0].dinfo),
+ DEFINE_PROP_DRIVE("drive", FDCtrlSysBus, state.drives[0].bs),
DEFINE_PROP_END_OF_LIST(),
},
};
diff --git a/hw/ide/core.c b/hw/ide/core.c
index 0b3b7c2..cc4591b 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -2594,15 +2594,15 @@
ide_clear_hob(bus);
}
-void ide_init_drive(IDEState *s, DriveInfo *dinfo,
+void ide_init_drive(IDEState *s, BlockDriverState *bs,
const char *version, const char *serial)
{
int cylinders, heads, secs;
uint64_t nb_sectors;
- s->bs = dinfo->bdrv;
- bdrv_get_geometry(s->bs, &nb_sectors);
- bdrv_guess_geometry(s->bs, &cylinders, &heads, &secs);
+ s->bs = bs;
+ bdrv_get_geometry(bs, &nb_sectors);
+ bdrv_guess_geometry(bs, &cylinders, &heads, &secs);
s->cylinders = cylinders;
s->heads = heads;
s->sectors = secs;
@@ -2613,11 +2613,11 @@
s->smart_autosave = 1;
s->smart_errors = 0;
s->smart_selftest_count = 0;
- if (bdrv_get_type_hint(s->bs) == BDRV_TYPE_CDROM) {
+ if (bdrv_get_type_hint(bs) == BDRV_TYPE_CDROM) {
s->is_cdrom = 1;
- bdrv_set_change_cb(s->bs, cdrom_change_cb, s);
+ bdrv_set_change_cb(bs, cdrom_change_cb, s);
}
- if (serial && *serial) {
+ if (serial) {
strncpy(s->drive_serial_str, serial, sizeof(s->drive_serial_str));
} else {
snprintf(s->drive_serial_str, sizeof(s->drive_serial_str),
@@ -2668,7 +2668,8 @@
dinfo = i == 0 ? hd0 : hd1;
ide_init1(bus, i);
if (dinfo) {
- ide_init_drive(&bus->ifs[i], dinfo, NULL, dinfo->serial);
+ ide_init_drive(&bus->ifs[i], dinfo->bdrv, NULL,
+ *dinfo->serial ? dinfo->serial : NULL);
} else {
ide_reset(&bus->ifs[i]);
}
diff --git a/hw/ide/internal.h b/hw/ide/internal.h
index eef1ee1..0125a9f 100644
--- a/hw/ide/internal.h
+++ b/hw/ide/internal.h
@@ -555,7 +555,7 @@
void ide_data_writel(void *opaque, uint32_t addr, uint32_t val);
uint32_t ide_data_readl(void *opaque, uint32_t addr);
-void ide_init_drive(IDEState *s, DriveInfo *dinfo,
+void ide_init_drive(IDEState *s, BlockDriverState *bs,
const char *version, const char *serial);
void ide_init2(IDEBus *bus, qemu_irq irq);
void ide_init2_with_non_qdev_drives(IDEBus *bus, DriveInfo *hd0,
diff --git a/hw/ide/qdev.c b/hw/ide/qdev.c
index 127478b..a5fdab0 100644
--- a/hw/ide/qdev.c
+++ b/hw/ide/qdev.c
@@ -39,7 +39,7 @@
IDEDeviceInfo *info = DO_UPCAST(IDEDeviceInfo, qdev, base);
IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus);
- if (!dev->conf.dinfo) {
+ if (!dev->conf.bs) {
fprintf(stderr, "%s: no drive specified\n", qdev->info->name);
goto err;
}
@@ -83,7 +83,7 @@
dev = qdev_create(&bus->qbus, "ide-drive");
qdev_prop_set_uint32(dev, "unit", unit);
- qdev_prop_set_drive(dev, "drive", drive);
+ qdev_prop_set_drive(dev, "drive", drive->bdrv);
qdev_init_nofail(dev);
return DO_UPCAST(IDEDevice, qdev, dev);
}
@@ -99,14 +99,18 @@
IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus);
IDEState *s = bus->ifs + dev->unit;
const char *serial;
+ DriveInfo *dinfo;
serial = dev->serial;
if (!serial) {
/* try to fall back to value set with legacy -drive serial=... */
- serial = dev->conf.dinfo->serial;
+ dinfo = drive_get_by_blockdev(dev->conf.bs);
+ if (*dinfo->serial) {
+ serial = dinfo->serial;
+ }
}
- ide_init_drive(s, dev->conf.dinfo, dev->version, serial);
+ ide_init_drive(s, dev->conf.bs, dev->version, serial);
if (!dev->version) {
dev->version = qemu_strdup(s->version);
diff --git a/hw/pci-hotplug.c b/hw/pci-hotplug.c
index 55c9fe3..d743192 100644
--- a/hw/pci-hotplug.c
+++ b/hw/pci-hotplug.c
@@ -89,7 +89,7 @@
* specified).
*/
dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1);
- scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo, dinfo->unit);
+ scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo->bdrv, dinfo->unit);
if (!scsidev) {
return -1;
}
@@ -214,7 +214,7 @@
return NULL;
}
dev = pci_create(bus, devfn, "virtio-blk-pci");
- qdev_prop_set_drive(&dev->qdev, "drive", dinfo);
+ qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv);
if (qdev_init(&dev->qdev) < 0)
dev = NULL;
break;
diff --git a/hw/qdev-properties.c b/hw/qdev-properties.c
index d7dc234..49b3377 100644
--- a/hw/qdev-properties.c
+++ b/hw/qdev-properties.c
@@ -305,33 +305,36 @@
static int parse_drive(DeviceState *dev, Property *prop, const char *str)
{
- DriveInfo **ptr = qdev_get_prop_ptr(dev, prop);
+ BlockDriverState **ptr = qdev_get_prop_ptr(dev, prop);
+ BlockDriverState *bs;
- *ptr = drive_get_by_id(str);
- if (*ptr == NULL)
+ bs = bdrv_find(str);
+ if (bs == NULL)
return -ENOENT;
+ *ptr = bs;
return 0;
}
static void free_drive(DeviceState *dev, Property *prop)
{
- DriveInfo **ptr = qdev_get_prop_ptr(dev, prop);
+ BlockDriverState **ptr = qdev_get_prop_ptr(dev, prop);
if (*ptr) {
- blockdev_auto_del((*ptr)->bdrv);
+ blockdev_auto_del(*ptr);
}
}
static int print_drive(DeviceState *dev, Property *prop, char *dest, size_t len)
{
- DriveInfo **ptr = qdev_get_prop_ptr(dev, prop);
- return snprintf(dest, len, "%s", (*ptr) ? (*ptr)->id : "<null>");
+ BlockDriverState **ptr = qdev_get_prop_ptr(dev, prop);
+ return snprintf(dest, len, "%s",
+ *ptr ? bdrv_get_device_name(*ptr) : "<null>");
}
PropertyInfo qdev_prop_drive = {
.name = "drive",
.type = PROP_TYPE_DRIVE,
- .size = sizeof(DriveInfo*),
+ .size = sizeof(BlockDriverState *),
.parse = parse_drive,
.print = print_drive,
.free = free_drive,
@@ -657,7 +660,7 @@
qdev_prop_set(dev, name, &value, PROP_TYPE_STRING);
}
-void qdev_prop_set_drive(DeviceState *dev, const char *name, DriveInfo *value)
+void qdev_prop_set_drive(DeviceState *dev, const char *name, BlockDriverState *value)
{
qdev_prop_set(dev, name, &value, PROP_TYPE_DRIVE);
}
diff --git a/hw/qdev.h b/hw/qdev.h
index be5ad67..7a01a81 100644
--- a/hw/qdev.h
+++ b/hw/qdev.h
@@ -253,8 +253,8 @@
DEFINE_PROP(_n, _s, _f, qdev_prop_netdev, VLANClientState*)
#define DEFINE_PROP_VLAN(_n, _s, _f) \
DEFINE_PROP(_n, _s, _f, qdev_prop_vlan, VLANState*)
-#define DEFINE_PROP_DRIVE(_n, _s, _f) \
- DEFINE_PROP(_n, _s, _f, qdev_prop_drive, DriveInfo*)
+#define DEFINE_PROP_DRIVE(_n, _s, _f) \
+ DEFINE_PROP(_n, _s, _f, qdev_prop_drive, BlockDriverState *)
#define DEFINE_PROP_MACADDR(_n, _s, _f) \
DEFINE_PROP(_n, _s, _f, qdev_prop_macaddr, MACAddr)
@@ -275,7 +275,7 @@
void qdev_prop_set_chr(DeviceState *dev, const char *name, CharDriverState *value);
void qdev_prop_set_netdev(DeviceState *dev, const char *name, VLANClientState *value);
void qdev_prop_set_vlan(DeviceState *dev, const char *name, VLANState *value);
-void qdev_prop_set_drive(DeviceState *dev, const char *name, DriveInfo *value);
+void qdev_prop_set_drive(DeviceState *dev, const char *name, BlockDriverState *value);
void qdev_prop_set_macaddr(DeviceState *dev, const char *name, uint8_t *value);
/* FIXME: Remove opaque pointer properties. */
void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value);
diff --git a/hw/s390-virtio.c b/hw/s390-virtio.c
index 898f442..c7c3fc9 100644
--- a/hw/s390-virtio.c
+++ b/hw/s390-virtio.c
@@ -262,7 +262,7 @@
}
dev = qdev_create((BusState *)s390_bus, "virtio-blk-s390");
- qdev_prop_set_drive(dev, "drive", dinfo);
+ qdev_prop_set_drive(dev, "drive", dinfo->bdrv);
qdev_init_nofail(dev);
}
}
diff --git a/hw/scsi-bus.c b/hw/scsi-bus.c
index d5b66c1..2c58aca 100644
--- a/hw/scsi-bus.c
+++ b/hw/scsi-bus.c
@@ -83,15 +83,15 @@
}
/* handle legacy '-drive if=scsi,...' cmd line args */
-SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, DriveInfo *dinfo, int unit)
+SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockDriverState *bdrv, int unit)
{
const char *driver;
DeviceState *dev;
- driver = bdrv_is_sg(dinfo->bdrv) ? "scsi-generic" : "scsi-disk";
+ driver = bdrv_is_sg(bdrv) ? "scsi-generic" : "scsi-disk";
dev = qdev_create(&bus->qbus, driver);
qdev_prop_set_uint32(dev, "scsi-id", unit);
- qdev_prop_set_drive(dev, "drive", dinfo);
+ qdev_prop_set_drive(dev, "drive", bdrv);
if (qdev_init(dev) < 0)
return NULL;
return DO_UPCAST(SCSIDevice, qdev, dev);
@@ -107,7 +107,7 @@
if (dinfo == NULL) {
continue;
}
- if (!scsi_bus_legacy_add_drive(bus, dinfo, unit)) {
+ if (!scsi_bus_legacy_add_drive(bus, dinfo->bdrv, unit)) {
res = -1;
break;
}
diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c
index d76e640..e900eff 100644
--- a/hw/scsi-disk.c
+++ b/hw/scsi-disk.c
@@ -1043,26 +1043,24 @@
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
scsi_disk_purge_requests(s);
- blockdev_mark_auto_del(s->qdev.conf.dinfo->bdrv);
+ blockdev_mark_auto_del(s->qdev.conf.bs);
}
static int scsi_disk_initfn(SCSIDevice *dev)
{
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
+ DriveInfo *dinfo;
- if (!s->qdev.conf.dinfo || !s->qdev.conf.dinfo->bdrv) {
+ if (!s->qdev.conf.bs) {
error_report("scsi-disk: drive property not set");
return -1;
}
- s->bs = s->qdev.conf.dinfo->bdrv;
+ s->bs = s->qdev.conf.bs;
if (!s->serial) {
- if (*dev->conf.dinfo->serial) {
- /* try to fall back to value set with legacy -drive serial=... */
- s->serial = qemu_strdup(dev->conf.dinfo->serial);
- } else {
- s->serial = qemu_strdup("0");
- }
+ /* try to fall back to value set with legacy -drive serial=... */
+ dinfo = drive_get_by_blockdev(s->bs);
+ s->serial = qemu_strdup(*dinfo->serial ? dinfo->serial : "0");
}
if (!s->version) {
diff --git a/hw/scsi-generic.c b/hw/scsi-generic.c
index 1859c94..79347f4 100644
--- a/hw/scsi-generic.c
+++ b/hw/scsi-generic.c
@@ -453,7 +453,7 @@
r = DO_UPCAST(SCSIGenericReq, req, QTAILQ_FIRST(&s->qdev.requests));
scsi_remove_request(r);
}
- blockdev_mark_auto_del(s->qdev.conf.dinfo->bdrv);
+ blockdev_mark_auto_del(s->qdev.conf.bs);
}
static int scsi_generic_initfn(SCSIDevice *dev)
@@ -462,11 +462,11 @@
int sg_version;
struct sg_scsi_id scsiid;
- if (!s->qdev.conf.dinfo || !s->qdev.conf.dinfo->bdrv) {
+ if (!s->qdev.conf.bs) {
error_report("scsi-generic: drive property not set");
return -1;
}
- s->bs = s->qdev.conf.dinfo->bdrv;
+ s->bs = s->qdev.conf.bs;
/* check we are really using a /dev/sg* file */
if (!bdrv_is_sg(s->bs)) {
diff --git a/hw/scsi.h b/hw/scsi.h
index b1b5f73..4fbf1d5 100644
--- a/hw/scsi.h
+++ b/hw/scsi.h
@@ -97,7 +97,7 @@
return DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus);
}
-SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, DriveInfo *dinfo, int unit);
+SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockDriverState *bdrv, int unit);
int scsi_bus_legacy_handle_cmdline(SCSIBus *bus);
void scsi_dev_clear_sense(SCSIDevice *dev);
diff --git a/hw/usb-msd.c b/hw/usb-msd.c
index 3dbfcab..19a14b4 100644
--- a/hw/usb-msd.c
+++ b/hw/usb-msd.c
@@ -522,9 +522,9 @@
static int usb_msd_initfn(USBDevice *dev)
{
MSDState *s = DO_UPCAST(MSDState, dev, dev);
- DriveInfo *dinfo = s->conf.dinfo;
+ BlockDriverState *bs = s->conf.bs;
- if (!dinfo || !dinfo->bdrv) {
+ if (!bs) {
error_report("usb-msd: drive property not set");
return -1;
}
@@ -538,21 +538,20 @@
*
* The hack is probably a bad idea.
*/
- s->conf.dinfo = NULL;
+ s->conf.bs = NULL;
s->dev.speed = USB_SPEED_FULL;
scsi_bus_new(&s->bus, &s->dev.qdev, 0, 1, usb_msd_command_complete);
- s->scsi_dev = scsi_bus_legacy_add_drive(&s->bus, dinfo, 0);
+ s->scsi_dev = scsi_bus_legacy_add_drive(&s->bus, bs, 0);
if (!s->scsi_dev) {
return -1;
}
s->bus.qbus.allow_hotplug = 0;
usb_msd_handle_reset(dev);
- if (bdrv_key_required(dinfo->bdrv)) {
+ if (bdrv_key_required(bs)) {
if (cur_mon) {
- monitor_read_bdrv_key_start(cur_mon, dinfo->bdrv,
- usb_msd_password_cb, s);
+ monitor_read_bdrv_key_start(cur_mon, bs, usb_msd_password_cb, s);
s->dev.auto_attach = 0;
} else {
autostart = 0;
@@ -610,7 +609,7 @@
if (!dev) {
return NULL;
}
- qdev_prop_set_drive(&dev->qdev, "drive", dinfo);
+ qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv);
if (qdev_init(&dev->qdev) < 0)
return NULL;
diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index 0bf929a..71c5d21 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -489,7 +489,7 @@
s->vdev.get_config = virtio_blk_update_config;
s->vdev.get_features = virtio_blk_get_features;
s->vdev.reset = virtio_blk_reset;
- s->bs = conf->dinfo->bdrv;
+ s->bs = conf->bs;
s->conf = conf;
s->rq = NULL;
s->sector_mask = (s->conf->logical_block_size / BDRV_SECTOR_SIZE) - 1;
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index 31a68fe..c6ef825 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -547,7 +547,7 @@
proxy->class_code != PCI_CLASS_STORAGE_OTHER)
proxy->class_code = PCI_CLASS_STORAGE_SCSI;
- if (!proxy->block.dinfo) {
+ if (!proxy->block.bs) {
error_report("virtio-blk-pci: drive property not set");
return -1;
}
@@ -571,7 +571,7 @@
{
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
- blockdev_mark_auto_del(proxy->block.dinfo->bdrv);
+ blockdev_mark_auto_del(proxy->block.bs);
return virtio_exit_pci(pci_dev);
}
