virtio-blk: define VirtIOBlkConf

We will have to add another field to the virtio-blk configuration in
the next patch.  Avoid a proliferation of arguments to virtio_blk_init.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Paolo Bonzini 2012-05-16 12:54:05 +02:00 committed by Anthony Liguori
parent 0e47931b88
commit 12c5674b84
7 changed files with 32 additions and 28 deletions

View file

@ -163,8 +163,7 @@ static int s390_virtio_blk_init(VirtIOS390Device *dev)
{
VirtIODevice *vdev;
vdev = virtio_blk_init((DeviceState *)dev, &dev->block,
&dev->block_serial);
vdev = virtio_blk_init((DeviceState *)dev, &dev->blk);
if (!vdev) {
return -1;
}
@ -400,8 +399,8 @@ static TypeInfo s390_virtio_net = {
};
static Property s390_virtio_blk_properties[] = {
DEFINE_BLOCK_PROPERTIES(VirtIOS390Device, block),
DEFINE_PROP_STRING("serial", VirtIOS390Device, block_serial),
DEFINE_BLOCK_PROPERTIES(VirtIOS390Device, blk.conf),
DEFINE_PROP_STRING("serial", VirtIOS390Device, blk.serial),
DEFINE_PROP_END_OF_LIST(),
};

View file

@ -17,6 +17,7 @@
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "virtio-blk.h"
#include "virtio-net.h"
#include "virtio-serial.h"
#include "virtio-scsi.h"
@ -64,8 +65,7 @@ struct VirtIOS390Device {
ram_addr_t feat_offs;
uint8_t feat_len;
VirtIODevice *vdev;
BlockConf block;
char *block_serial;
VirtIOBlkConf blk;
NICConf nic;
uint32_t host_features;
virtio_serial_conf serial;

View file

@ -29,7 +29,7 @@ typedef struct VirtIOBlock
void *rq;
QEMUBH *bh;
BlockConf *conf;
char *serial;
VirtIOBlkConf *blk;
unsigned short sector_mask;
DeviceState *qdev;
} VirtIOBlock;
@ -389,7 +389,7 @@ static void virtio_blk_handle_request(VirtIOBlockReq *req,
* terminated by '\0' only when shorter than buffer.
*/
strncpy(req->elem.in_sg[0].iov_base,
s->serial ? s->serial : "",
s->blk->serial ? s->blk->serial : "",
MIN(req->elem.in_sg[0].iov_len, VIRTIO_BLK_ID_BYTES));
virtio_blk_req_complete(req, VIRTIO_BLK_S_OK);
g_free(req);
@ -563,28 +563,27 @@ static const BlockDevOps virtio_block_ops = {
.resize_cb = virtio_blk_resize,
};
VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf,
char **serial)
VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk)
{
VirtIOBlock *s;
int cylinders, heads, secs;
static int virtio_blk_id;
DriveInfo *dinfo;
if (!conf->bs) {
if (!blk->conf.bs) {
error_report("drive property not set");
return NULL;
}
if (!bdrv_is_inserted(conf->bs)) {
if (!bdrv_is_inserted(blk->conf.bs)) {
error_report("Device needs media, but drive is empty");
return NULL;
}
if (!*serial) {
if (!blk->serial) {
/* try to fall back to value set with legacy -drive serial=... */
dinfo = drive_get_by_blockdev(conf->bs);
dinfo = drive_get_by_blockdev(blk->conf.bs);
if (*dinfo->serial) {
*serial = strdup(dinfo->serial);
blk->serial = strdup(dinfo->serial);
}
}
@ -595,9 +594,9 @@ VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf,
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->bs;
s->conf = conf;
s->serial = *serial;
s->bs = blk->conf.bs;
s->conf = &blk->conf;
s->blk = blk;
s->rq = NULL;
s->sector_mask = (s->conf->logical_block_size / BDRV_SECTOR_SIZE) - 1;
bdrv_guess_geometry(s->bs, &cylinders, &heads, &secs);
@ -609,10 +608,10 @@ VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf,
register_savevm(dev, "virtio-blk", virtio_blk_id++, 2,
virtio_blk_save, virtio_blk_load, s);
bdrv_set_dev_ops(s->bs, &virtio_block_ops, s);
bdrv_set_buffer_alignment(s->bs, conf->logical_block_size);
bdrv_set_buffer_alignment(s->bs, s->conf->logical_block_size);
bdrv_iostatus_enable(s->bs);
add_boot_device_path(conf->bootindex, dev, "/disk@0,0");
add_boot_device_path(s->conf->bootindex, dev, "/disk@0,0");
return &s->vdev;
}

View file

@ -97,6 +97,12 @@ struct virtio_scsi_inhdr
uint32_t residual;
};
struct VirtIOBlkConf
{
BlockConf conf;
char *serial;
};
#ifdef __linux__
#define DEFINE_VIRTIO_BLK_FEATURES(_state, _field) \
DEFINE_VIRTIO_COMMON_FEATURES(_state, _field), \
@ -105,4 +111,5 @@ struct virtio_scsi_inhdr
#define DEFINE_VIRTIO_BLK_FEATURES(_state, _field) \
DEFINE_VIRTIO_COMMON_FEATURES(_state, _field)
#endif
#endif

View file

@ -697,8 +697,7 @@ static int virtio_blk_init_pci(PCIDevice *pci_dev)
proxy->class_code != PCI_CLASS_STORAGE_OTHER)
proxy->class_code = PCI_CLASS_STORAGE_SCSI;
vdev = virtio_blk_init(&pci_dev->qdev, &proxy->block,
&proxy->block_serial);
vdev = virtio_blk_init(&pci_dev->qdev, &proxy->blk);
if (!vdev) {
return -1;
}
@ -813,8 +812,8 @@ static int virtio_balloon_exit_pci(PCIDevice *pci_dev)
static Property virtio_blk_properties[] = {
DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
DEFINE_BLOCK_PROPERTIES(VirtIOPCIProxy, block),
DEFINE_PROP_STRING("serial", VirtIOPCIProxy, block_serial),
DEFINE_BLOCK_PROPERTIES(VirtIOPCIProxy, blk.conf),
DEFINE_PROP_STRING("serial", VirtIOPCIProxy, blk.serial),
DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features),

View file

@ -15,6 +15,7 @@
#ifndef QEMU_VIRTIO_PCI_H
#define QEMU_VIRTIO_PCI_H
#include "virtio-blk.h"
#include "virtio-net.h"
#include "virtio-serial.h"
#include "virtio-scsi.h"
@ -32,8 +33,7 @@ typedef struct {
uint32_t flags;
uint32_t class_code;
uint32_t nvectors;
BlockConf block;
char *block_serial;
VirtIOBlkConf blk;
NICConf nic;
uint32_t host_features;
#ifdef CONFIG_LINUX

View file

@ -191,8 +191,8 @@ void virtio_bind_device(VirtIODevice *vdev, const VirtIOBindings *binding,
void *opaque);
/* Base devices. */
VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf,
char **serial);
typedef struct VirtIOBlkConf VirtIOBlkConf;
VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk);
struct virtio_net_conf;
VirtIODevice *virtio_net_init(DeviceState *dev, NICConf *conf,
struct virtio_net_conf *net);