From: Longpeng <longpe...@huawei.com>
Implements the .instance_init and the .class_init interface.
Signed-off-by: Longpeng <longpe...@huawei.com>
---
hw/virtio/vdpa-dev-pci.c | 80 +++++++++++++++++++++++++++++++++++-
hw/virtio/vdpa-dev.c | 68 +++++++++++++++++++++++++++++-
include/hw/virtio/vdpa-dev.h | 2 +
3 files changed, 146 insertions(+), 4 deletions(-)
diff --git a/hw/virtio/vdpa-dev-pci.c b/hw/virtio/vdpa-dev-pci.c
index a5a7b528a9..0af54a26d4 100644
--- a/hw/virtio/vdpa-dev-pci.c
+++ b/hw/virtio/vdpa-dev-pci.c
@@ -23,14 +23,90 @@ struct VhostVdpaDevicePCI {
VhostVdpaDevice vdev;
};
+static uint32_t
+vdpa_dev_pci_get_info(const char *name, uint64_t cmd, Error **errp)
+{
+ int device_fd;
+ uint32_t val;
+ int ret;
+
+ device_fd = qemu_open(name, O_RDWR, errp);
+ if (device_fd == -1) {
+ return (uint32_t)-1;
+ }
+
+ ret = ioctl(device_fd, cmd, &val);
+ if (ret < 0) {
+ error_setg(errp, "vhost-vdpa-device-pci: cmd 0x%lx failed: %s",
+ cmd, strerror(errno));
+ goto out;
+ }
+
+out:
+ close(device_fd);
+ return val;
+}
+
+static inline uint32_t
+vdpa_dev_pci_get_devid(VhostVdpaDevicePCI *dev, Error **errp)
+{
+ return vdpa_dev_pci_get_info(dev->vdev.vdpa_dev,
+ VHOST_VDPA_GET_DEVICE_ID, errp);
+}
+
+static inline uint32_t
+vdpa_dev_pci_get_vectors_num(VhostVdpaDevicePCI *dev, Error **errp)
+{
+ return vdpa_dev_pci_get_info(dev->vdev.vdpa_dev,
+ VHOST_VDPA_GET_VECTORS_NUM, errp);
+}
+
static void vhost_vdpa_device_pci_instance_init(Object *obj)
{
- return;
+ VhostVdpaDevicePCI *dev = VHOST_VDPA_DEVICE_PCI(obj);
+
+ virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
+ TYPE_VHOST_VDPA_DEVICE);
+ object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
+ "bootindex");
+}
+
+static Property vhost_vdpa_device_pci_properties[] = {
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void
+vhost_vdpa_device_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
+{
+ VhostVdpaDevicePCI *dev = VHOST_VDPA_DEVICE_PCI(vpci_dev);
+ DeviceState *vdev = DEVICE(&dev->vdev);
+ uint32_t devid;
+ uint32_t vectors;
+
+ devid = vdpa_dev_pci_get_devid(dev, errp);
+ if (*errp) {
+ return;
+ }
+
+ vectors = vdpa_dev_pci_get_vectors_num(dev, errp);
+ if (*errp) {
+ return;
+ }
+
+ vpci_dev->class_code = virtio_pci_get_class_id(devid);
+ vpci_dev->pdev_id = virtio_pci_get_pci_devid(devid);
+ vpci_dev->nvectors = vectors;
+ qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
}
static void vhost_vdpa_device_pci_class_init(ObjectClass *klass, void *data)
{
- return;
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
+
+ set_bit(DEVICE_CATEGORY_MISC, dc->categories);
+ device_class_set_props(dc, vhost_vdpa_device_pci_properties);
+ k->realize = vhost_vdpa_device_pci_realize;
}
static const VirtioPCIDeviceTypeInfo vhost_vdpa_device_pci_info = {
diff --git a/hw/virtio/vdpa-dev.c b/hw/virtio/vdpa-dev.c
index f4f92b90b0..790117fb3b 100644
--- a/hw/virtio/vdpa-dev.c
+++ b/hw/virtio/vdpa-dev.c
@@ -15,16 +15,80 @@
#include "sysemu/sysemu.h"
#include "sysemu/runstate.h"
-static void vhost_vdpa_device_class_init(ObjectClass *klass, void *data)
+static void vhost_vdpa_device_realize(DeviceState *dev, Error **errp)
{
return;
}
-static void vhost_vdpa_device_instance_init(Object *obj)
+static void vhost_vdpa_device_unrealize(DeviceState *dev)
+{
+ return;
+}
+
+static void
+vhost_vdpa_device_get_config(VirtIODevice *vdev, uint8_t *config)
+{
+ return;
+}
+
+static void
+vhost_vdpa_device_set_config(VirtIODevice *vdev, const uint8_t *config)
{
return;
}
+static uint64_t vhost_vdpa_device_get_features(VirtIODevice *vdev,
+ uint64_t features,
+ Error **errp)
+{
+ return (uint64_t)-1;
+}
+
+static void vhost_vdpa_device_set_status(VirtIODevice *vdev, uint8_t status)
+{
+ return;
+}
+
+static Property vhost_vdpa_device_properties[] = {
+ DEFINE_PROP_STRING("vdpa-dev", VhostVdpaDevice, vdpa_dev),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static const VMStateDescription vmstate_vhost_vdpa_device = {
+ .name = "vhost-vdpa-device",
+ .minimum_version_id = 1,
+ .version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_VIRTIO_DEVICE,
+ VMSTATE_END_OF_LIST()
+ },
+};
+
+static void vhost_vdpa_device_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
+
+ device_class_set_props(dc, vhost_vdpa_device_properties);
+ dc->desc = "VDPA-based generic PCI device assignment";
+ dc->vmsd = &vmstate_vhost_vdpa_device;
+ set_bit(DEVICE_CATEGORY_MISC, dc->categories);
+ vdc->realize = vhost_vdpa_device_realize;
+ vdc->unrealize = vhost_vdpa_device_unrealize;
+ vdc->get_config = vhost_vdpa_device_get_config;
+ vdc->set_config = vhost_vdpa_device_set_config;
+ vdc->get_features = vhost_vdpa_device_get_features;
+ vdc->set_status = vhost_vdpa_device_set_status;
+}
+
+static void vhost_vdpa_device_instance_init(Object *obj)
+{
+ VhostVdpaDevice *s = VHOST_VDPA_DEVICE(obj);
+
+ device_add_bootindex_property(obj, &s->bootindex, "bootindex",
+ NULL, DEVICE(obj));
+}
+
static const TypeInfo vhost_vdpa_device_info = {
.name = TYPE_VHOST_VDPA_DEVICE,
.parent = TYPE_VIRTIO_DEVICE,
diff --git a/include/hw/virtio/vdpa-dev.h b/include/hw/virtio/vdpa-dev.h
index dd94bd74a2..7a0e6bdcf8 100644
--- a/include/hw/virtio/vdpa-dev.h
+++ b/include/hw/virtio/vdpa-dev.h
@@ -11,6 +11,8 @@ OBJECT_DECLARE_SIMPLE_TYPE(VhostVdpaDevice, VHOST_VDPA_DEVICE)
struct VhostVdpaDevice {
VirtIODevice parent_obj;
+ char *vdpa_dev;
+ int32_t bootindex;
};
#endif
--
2.23.0
