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virtio-scsi: add the virtio-scsi device.

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Create virtio-scsi which extends virtio-device, so it can be connected on
virtio-bus.

Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Message-id: 1363875320-7985-5-git-send-email-fred.konrad@greensocs.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
KONRAD Frederic 2013-03-21 15:15:14 +01:00 committed by Anthony Liguori
parent 4bfeb18a45
commit 3ab1dfdd50
2 changed files with 85 additions and 5 deletions
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85
hw/virtio-scsi.c
View File

@ -17,6 +17,7 @@
#include "qemu/error-report.h"
#include <hw/scsi.h>
#include <hw/scsi-defs.h>
#include "hw/virtio-bus.h"
#define VIRTIO_SCSI_VQ_SIZE 128
#define VIRTIO_SCSI_CDB_SIZE 32
@ -686,15 +687,30 @@ static struct SCSIBusInfo virtio_scsi_scsi_info = {
.load_request = virtio_scsi_load_request,
};
VirtIODevice *virtio_scsi_init(DeviceState *dev, VirtIOSCSIConf *proxyconf)
static VirtIODevice *virtio_scsi_common_init(DeviceState *dev,
VirtIOSCSIConf *proxyconf,
VirtIOSCSI **ps)
{
VirtIOSCSI *s;
VirtIOSCSI *s = *ps;
static int virtio_scsi_id;
int i;
s = (VirtIOSCSI *)virtio_common_init("virtio-scsi", VIRTIO_ID_SCSI,
sizeof(VirtIOSCSIConfig),
sizeof(VirtIOSCSI));
/*
* We have two cases here: the old virtio-scsi-pci device, and the
* refactored virtio-scsi.
*/
if (s == NULL) {
/* virtio-scsi-pci */
s = (VirtIOSCSI *)virtio_common_init("virtio-scsi", VIRTIO_ID_SCSI,
sizeof(VirtIOSCSIConfig),
sizeof(VirtIOSCSI));
} else {
/* virtio-scsi */
virtio_init(VIRTIO_DEVICE(s), "virtio-scsi", VIRTIO_ID_SCSI,
sizeof(VirtIOSCSIConfig));
}
s->cmd_vqs = g_malloc0(proxyconf->num_queues * sizeof(VirtQueue *));
s->qdev = dev;
@ -726,6 +742,12 @@ VirtIODevice *virtio_scsi_init(DeviceState *dev, VirtIOSCSIConf *proxyconf)
return &s->vdev;
}
VirtIODevice *virtio_scsi_init(DeviceState *dev, VirtIOSCSIConf *proxyconf)
{
VirtIOSCSI *s = NULL;
return virtio_scsi_common_init(dev, proxyconf, &s);
}
void virtio_scsi_exit(VirtIODevice *vdev)
{
VirtIOSCSI *s = (VirtIOSCSI *)vdev;
@ -733,3 +755,56 @@ void virtio_scsi_exit(VirtIODevice *vdev)
g_free(s->cmd_vqs);
virtio_cleanup(vdev);
}
static int virtio_scsi_device_init(VirtIODevice *vdev)
{
DeviceState *qdev = DEVICE(vdev);
VirtIOSCSI *s = VIRTIO_SCSI(vdev);
if (virtio_scsi_common_init(qdev, &(s->conf), &s) == NULL) {
return -1;
}
return 0;
}
static int virtio_scsi_device_exit(DeviceState *qdev)
{
VirtIOSCSI *s = VIRTIO_SCSI(qdev);
VirtIODevice *vdev = VIRTIO_DEVICE(qdev);
unregister_savevm(qdev, "virtio-scsi", s);
g_free(s->cmd_vqs);
virtio_common_cleanup(vdev);
return 0;
}
static Property virtio_scsi_properties[] = {
DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSI, conf),
DEFINE_PROP_END_OF_LIST(),
};
static void virtio_scsi_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
dc->exit = virtio_scsi_device_exit;
dc->props = virtio_scsi_properties;
vdc->init = virtio_scsi_device_init;
vdc->get_config = virtio_scsi_get_config;
vdc->set_config = virtio_scsi_set_config;
vdc->get_features = virtio_scsi_get_features;
vdc->reset = virtio_scsi_reset;
}
static const TypeInfo virtio_scsi_info = {
.name = TYPE_VIRTIO_SCSI,
.parent = TYPE_VIRTIO_DEVICE,
.instance_size = sizeof(VirtIOSCSI),
.class_init = virtio_scsi_class_init,
};
static void virtio_register_types(void)
{
type_register_static(&virtio_scsi_info);
}
type_init(virtio_register_types)

5
hw/virtio-scsi.h
View File

@ -18,6 +18,11 @@
#include "hw/pci/pci.h"
#include "hw/scsi.h"
#define TYPE_VIRTIO_SCSI "virtio-scsi"
#define VIRTIO_SCSI(obj) \
OBJECT_CHECK(VirtIOSCSI, (obj), TYPE_VIRTIO_SCSI)
/* The ID for virtio_scsi */
#define VIRTIO_ID_SCSI 8