virtio: remove virtiobindings.

This remove virtio-bindings, and use class instead.
Signed-off-by: NKONRAD Frederic <fred.konrad@greensocs.com>
Message-id: 1366791683-5350-6-git-send-email-fred.konrad@greensocs.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

hw/block/dataplane/virtio-blk.c

@@ -23,6 +23,7 @@
 #include "hw/virtio/virtio-blk.h"
 #include "virtio-blk.h"
 #include "block/aio.h"
+#include "hw/virtio/virtio-bus.h"
 
 enum {
     SEG_MAX = 126,                  /* maximum number of I/O segments */
@@ -455,6 +456,8 @@ void virtio_blk_data_plane_destroy(VirtIOBlockDataPlane *s)
 
 void virtio_blk_data_plane_start(VirtIOBlockDataPlane *s)
 {
+    BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(s->vdev)));
+    VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
     VirtQueue *vq;
     int i;
 
@@ -470,8 +473,7 @@ void virtio_blk_data_plane_start(VirtIOBlockDataPlane *s)
     s->ctx = aio_context_new();
 
     /* Set up guest notifier (irq) */
-    if (s->vdev->binding->set_guest_notifiers(s->vdev->binding_opaque, 1,
-                                              true) != 0) {
+    if (k->set_guest_notifiers(qbus->parent, 1, true) != 0) {
         fprintf(stderr, "virtio-blk failed to set guest notifier, "
                 "ensure -enable-kvm is set\n");
         exit(1);
@@ -479,8 +481,7 @@ void virtio_blk_data_plane_start(VirtIOBlockDataPlane *s)
     s->guest_notifier = virtio_queue_get_guest_notifier(vq);
 
     /* Set up virtqueue notify */
-    if (s->vdev->binding->set_host_notifier(s->vdev->binding_opaque,
-                                            0, true) != 0) {
+    if (k->set_host_notifier(qbus->parent, 0, true) != 0) {
         fprintf(stderr, "virtio-blk failed to set host notifier\n");
         exit(1);
     }
@@ -508,6 +509,8 @@ void virtio_blk_data_plane_start(VirtIOBlockDataPlane *s)
 
 void virtio_blk_data_plane_stop(VirtIOBlockDataPlane *s)
 {
+    BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(s->vdev)));
+    VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
     if (!s->started || s->stopping) {
         return;
     }
@@ -527,12 +530,12 @@ void virtio_blk_data_plane_stop(VirtIOBlockDataPlane *s)
     ioq_cleanup(&s->ioqueue);
 
     aio_set_event_notifier(s->ctx, &s->host_notifier, NULL, NULL);
-    s->vdev->binding->set_host_notifier(s->vdev->binding_opaque, 0, false);
+    k->set_host_notifier(qbus->parent, 0, false);
 
     aio_context_unref(s->ctx);
 
     /* Clean up guest notifier (irq) */
-    s->vdev->binding->set_guest_notifiers(s->vdev->binding_opaque, 1, false);
+    k->set_guest_notifiers(qbus->parent, 1, false);
 
     vring_teardown(&s->vring);
     s->started = false;

hw/net/vhost_net.c

@@ -37,6 +37,7 @@
 #include <stdio.h>
 
 #include "hw/virtio/vhost.h"
+#include "hw/virtio/virtio-bus.h"
 
 struct vhost_net {
     struct vhost_dev dev;
@@ -211,9 +212,12 @@ static void vhost_net_stop_one(struct vhost_net *net,
 int vhost_net_start(VirtIODevice *dev, NetClientState *ncs,
                     int total_queues)
 {
+    BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(dev)));
+    VirtioBusState *vbus = VIRTIO_BUS(qbus);
+    VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(vbus);
     int r, i = 0;
 
-    if (!dev->binding->set_guest_notifiers) {
+    if (!k->set_guest_notifiers) {
         error_report("binding does not support guest notifiers");
         r = -ENOSYS;
         goto err;
@@ -227,9 +231,7 @@ int vhost_net_start(VirtIODevice *dev, NetClientState *ncs,
         }
     }
 
-    r = dev->binding->set_guest_notifiers(dev->binding_opaque,
-                                          total_queues * 2,
-                                          true);
+    r = k->set_guest_notifiers(qbus->parent, total_queues * 2, true);
     if (r < 0) {
         error_report("Error binding guest notifier: %d", -r);
         goto err;
@@ -247,11 +249,12 @@ err:
 void vhost_net_stop(VirtIODevice *dev, NetClientState *ncs,
                     int total_queues)
 {
+    BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(dev)));
+    VirtioBusState *vbus = VIRTIO_BUS(qbus);
+    VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(vbus);
     int i, r;
 
-    r = dev->binding->set_guest_notifiers(dev->binding_opaque,
-                                          total_queues * 2,
-                                          false);
+    r = k->set_guest_notifiers(qbus->parent, total_queues * 2, false);
     if (r < 0) {
         fprintf(stderr, "vhost guest notifier cleanup failed: %d\n", r);
         fflush(stderr);

hw/s390x/s390-virtio-bus.c

@@ -55,8 +55,6 @@ static const TypeInfo s390_virtio_bus_info = {
     .instance_size = sizeof(VirtIOS390Bus),
 };
 
-static const VirtIOBindings virtio_s390_bindings;
-
 static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev);
 
 /* length of VirtIO device pages */
@@ -140,7 +138,6 @@ static int s390_virtio_device_init(VirtIOS390Device *dev, VirtIODevice *vdev)
 
     bus->dev_offs += dev_len;
 
-    virtio_bind_device(vdev, &virtio_s390_bindings, DEVICE(dev));
     dev->host_features = virtio_bus_get_vdev_features(&dev->bus,
                                                       dev->host_features);
     s390_virtio_device_sync(dev);
@@ -466,11 +463,6 @@ static unsigned virtio_s390_get_features(DeviceState *d)
 
 /**************** S390 Virtio Bus Device Descriptions *******************/
 
-static const VirtIOBindings virtio_s390_bindings = {
-    .notify = virtio_s390_notify,
-    .get_features = virtio_s390_get_features,
-};
-
 static Property s390_virtio_net_properties[] = {
     DEFINE_NIC_PROPERTIES(VirtIONetS390, vdev.nic_conf),
     DEFINE_VIRTIO_NET_FEATURES(VirtIOS390Device, host_features),

hw/s390x/virtio-ccw.c

@@ -53,8 +53,6 @@ static const TypeInfo virtual_css_bus_info = {
     .class_init = virtual_css_bus_class_init,
 };
 
-static const VirtIOBindings virtio_ccw_bindings;
-
 VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch)
 {
     VirtIODevice *vdev = NULL;
@@ -521,7 +519,6 @@ static int virtio_ccw_device_init(VirtioCcwDevice *dev, VirtIODevice *vdev)
     sch->id.cu_type = VIRTIO_CCW_CU_TYPE;
     sch->id.cu_model = dev->vdev->device_id;
 
-    virtio_bind_device(vdev, &virtio_ccw_bindings, DEVICE(dev));
     /* Only the first 32 feature bits are used. */
     dev->host_features[0] = virtio_bus_get_vdev_features(&dev->bus,
                                                          dev->host_features[0]);
@@ -777,11 +774,6 @@ static void virtio_ccw_reset(DeviceState *d)
 
 /**************** Virtio-ccw Bus Device Descriptions *******************/
 
-static const VirtIOBindings virtio_ccw_bindings = {
-    .notify = virtio_ccw_notify,
-    .get_features = virtio_ccw_get_features,
-};
-
 static Property virtio_ccw_net_properties[] = {
     DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
     DEFINE_VIRTIO_NET_FEATURES(VirtioCcwDevice, host_features[0]),

hw/scsi/vhost-scsi.c

@@ -22,6 +22,7 @@
 #include "hw/virtio/vhost-scsi.h"
 #include "hw/virtio/vhost.h"
 #include "hw/virtio/virtio-scsi.h"
+#include "hw/virtio/virtio-bus.h"
 
 static int vhost_scsi_set_endpoint(VHostSCSI *s)
 {
@@ -52,8 +53,10 @@ static int vhost_scsi_start(VHostSCSI *s)
 {
     int ret, abi_version, i;
     VirtIODevice *vdev = VIRTIO_DEVICE(s);
+    BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev)));
+    VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
 
-    if (!vdev->binding->set_guest_notifiers) {
+    if (!k->set_guest_notifiers) {
         error_report("binding does not support guest notifiers");
         return -ENOSYS;
     }
@@ -88,7 +91,7 @@ static int vhost_scsi_start(VHostSCSI *s)
         goto err_vhost_stop;
     }
 
-    ret = vdev->binding->set_guest_notifiers(vdev->binding_opaque, s->dev.nvqs, true);
+    ret = k->set_guest_notifiers(qbus->parent, s->dev.nvqs, true);
     if (ret < 0) {
         error_report("Error binding guest notifier");
         goto err_endpoint;
@@ -116,11 +119,12 @@ err_notifiers:
 static void vhost_scsi_stop(VHostSCSI *s)
 {
     VirtIODevice *vdev = VIRTIO_DEVICE(s);
+    BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev)));
+    VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
     int ret = 0;
 
-    if (!vdev->binding->set_guest_notifiers) {
-        ret = vdev->binding->set_guest_notifiers(vdev->binding_opaque,
-                                                 s->dev.nvqs, false);
+    if (!k->set_guest_notifiers) {
+        ret = k->set_guest_notifiers(qbus->parent, s->dev.nvqs, false);
         if (ret < 0) {
                 error_report("vhost guest notifier cleanup failed: %d\n", ret);
         }

hw/virtio/vhost.c

@@ -19,6 +19,7 @@
 #include "qemu/range.h"
 #include <linux/vhost.h>
 #include "exec/address-spaces.h"
+#include "hw/virtio/virtio-bus.h"
 
 static void vhost_dev_sync_region(struct vhost_dev *dev,
                                   MemoryRegionSection *section,
@@ -892,9 +893,13 @@ void vhost_dev_cleanup(struct vhost_dev *hdev)
 
 bool vhost_dev_query(struct vhost_dev *hdev, VirtIODevice *vdev)
 {
-    return !vdev->binding->query_guest_notifiers ||
-        vdev->binding->query_guest_notifiers(vdev->binding_opaque) ||
-        hdev->force;
+    BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev)));
+    VirtioBusState *vbus = VIRTIO_BUS(qbus);
+    VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(vbus);
+
+    return !k->query_guest_notifiers ||
+           k->query_guest_notifiers(qbus->parent) ||
+           hdev->force;
 }
 
 /* Stop processing guest IO notifications in qemu.
@@ -902,17 +907,18 @@ bool vhost_dev_query(struct vhost_dev *hdev, VirtIODevice *vdev)
  */
 int vhost_dev_enable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev)
 {
+    BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev)));
+    VirtioBusState *vbus = VIRTIO_BUS(qbus);
+    VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(vbus);
     int i, r;
-    if (!vdev->binding->set_host_notifier) {
+    if (!k->set_host_notifier) {
         fprintf(stderr, "binding does not support host notifiers\n");
         r = -ENOSYS;
         goto fail;
     }
 
     for (i = 0; i < hdev->nvqs; ++i) {
-        r = vdev->binding->set_host_notifier(vdev->binding_opaque,
-                                             hdev->vq_index + i,
-                                             true);
+        r = k->set_host_notifier(qbus->parent, hdev->vq_index + i, true);
         if (r < 0) {
             fprintf(stderr, "vhost VQ %d notifier binding failed: %d\n", i, -r);
             goto fail_vq;
@@ -922,9 +928,7 @@ int vhost_dev_enable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev)
     return 0;
 fail_vq:
     while (--i >= 0) {
-        r = vdev->binding->set_host_notifier(vdev->binding_opaque,
-                                             hdev->vq_index + i,
-                                             false);
+        r = k->set_host_notifier(qbus->parent, hdev->vq_index + i, false);
         if (r < 0) {
             fprintf(stderr, "vhost VQ %d notifier cleanup error: %d\n", i, -r);
             fflush(stderr);
@@ -942,12 +946,13 @@ fail:
  */
 void vhost_dev_disable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev)
 {
+    BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev)));
+    VirtioBusState *vbus = VIRTIO_BUS(qbus);
+    VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(vbus);
     int i, r;
 
     for (i = 0; i < hdev->nvqs; ++i) {
-        r = vdev->binding->set_host_notifier(vdev->binding_opaque,
-                                             hdev->vq_index + i,
-                                             false);
+        r = k->set_host_notifier(qbus->parent, hdev->vq_index + i, false);
         if (r < 0) {
             fprintf(stderr, "vhost VQ %d notifier cleanup failed: %d\n", i, -r);
             fflush(stderr);

hw/virtio/virtio-bus.c

@@ -48,23 +48,6 @@ int virtio_bus_plug_device(VirtIODevice *vdev)
 
     bus->vdev = vdev;
 
-    /*
-     * The lines below will disappear when we drop VirtIOBindings, at the end
-     * of the series.
-     */
-    bus->bindings.notify = klass->notify;
-    bus->bindings.save_config = klass->save_config;
-    bus->bindings.save_queue = klass->save_queue;
-    bus->bindings.load_config = klass->load_config;
-    bus->bindings.load_queue = klass->load_queue;
-    bus->bindings.load_done = klass->load_done;
-    bus->bindings.get_features = klass->get_features;
-    bus->bindings.query_guest_notifiers = klass->query_guest_notifiers;
-    bus->bindings.set_guest_notifiers = klass->set_guest_notifiers;
-    bus->bindings.set_host_notifier = klass->set_host_notifier;
-    bus->bindings.vmstate_change = klass->vmstate_change;
-    virtio_bind_device(bus->vdev, &bus->bindings, qbus->parent);
-
     if (klass->device_plugged != NULL) {
         klass->device_plugged(qbus->parent);
     }

hw/virtio/virtio-pci.c

@@ -879,19 +879,6 @@ static void virtio_pci_vmstate_change(DeviceState *d, bool running)
     }
 }
 
-static const VirtIOBindings virtio_pci_bindings = {
-    .notify = virtio_pci_notify,
-    .save_config = virtio_pci_save_config,
-    .load_config = virtio_pci_load_config,
-    .save_queue = virtio_pci_save_queue,
-    .load_queue = virtio_pci_load_queue,
-    .get_features = virtio_pci_get_features,
-    .query_guest_notifiers = virtio_pci_query_guest_notifiers,
-    .set_host_notifier = virtio_pci_set_host_notifier,
-    .set_guest_notifiers = virtio_pci_set_guest_notifiers,
-    .vmstate_change = virtio_pci_vmstate_change,
-};
-
 #ifdef CONFIG_VIRTFS
 static int virtio_9p_init_pci(VirtIOPCIProxy *vpci_dev)
 {

hw/virtio/virtio.c

@@ -507,8 +507,11 @@ int virtqueue_pop(VirtQueue *vq, VirtQueueElement *elem)
 /* virtio device */
 static void virtio_notify_vector(VirtIODevice *vdev, uint16_t vector)
 {
-    if (vdev->binding->notify) {
-        vdev->binding->notify(vdev->binding_opaque, vector);
+    BusState *qbus = qdev_get_parent_bus(DEVICE(vdev));
+    VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
+
+    if (k->notify) {
+        k->notify(qbus->parent, vector);
     }
 }
 
@@ -789,10 +792,13 @@ void virtio_notify_config(VirtIODevice *vdev)
 
 void virtio_save(VirtIODevice *vdev, QEMUFile *f)
 {
+    BusState *qbus = qdev_get_parent_bus(DEVICE(vdev));
+    VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
     int i;
 
-    if (vdev->binding->save_config)
-        vdev->binding->save_config(vdev->binding_opaque, f);
+    if (k->save_config) {
+        k->save_config(qbus->parent, f);
+    }
 
     qemu_put_8s(f, &vdev->status);
     qemu_put_8s(f, &vdev->isr);
@@ -815,16 +821,18 @@ void virtio_save(VirtIODevice *vdev, QEMUFile *f)
         qemu_put_be32(f, vdev->vq[i].vring.num);
         qemu_put_be64(f, vdev->vq[i].pa);
         qemu_put_be16s(f, &vdev->vq[i].last_avail_idx);
-        if (vdev->binding->save_queue)
-            vdev->binding->save_queue(vdev->binding_opaque, i, f);
+        if (k->save_queue) {
+            k->save_queue(qbus->parent, i, f);
+        }
     }
 }
 
 int virtio_set_features(VirtIODevice *vdev, uint32_t val)
 {
+    BusState *qbus = qdev_get_parent_bus(DEVICE(vdev));
+    VirtioBusClass *vbusk = VIRTIO_BUS_GET_CLASS(qbus);
     VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
-    uint32_t supported_features =
-        vdev->binding->get_features(vdev->binding_opaque);
+    uint32_t supported_features = vbusk->get_features(qbus->parent);
     bool bad = (val & ~supported_features) != 0;
 
     val &= supported_features;
@@ -840,9 +848,11 @@ int virtio_load(VirtIODevice *vdev, QEMUFile *f)
     int num, i, ret;
     uint32_t features;
     uint32_t supported_features;
+    BusState *qbus = qdev_get_parent_bus(DEVICE(vdev));
+    VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
 
-    if (vdev->binding->load_config) {
-        ret = vdev->binding->load_config(vdev->binding_opaque, f);
+    if (k->load_config) {
+        ret = k->load_config(qbus->parent, f);
         if (ret)
             return ret;
     }
@@ -853,7 +863,7 @@ int virtio_load(VirtIODevice *vdev, QEMUFile *f)
     qemu_get_be32s(f, &features);
 
     if (virtio_set_features(vdev, features) < 0) {
-        supported_features = vdev->binding->get_features(vdev->binding_opaque);
+        supported_features = k->get_features(qbus->parent);
         error_report("Features 0x%x unsupported. Allowed features: 0x%x",
                      features, supported_features);
         return -1;
@@ -889,8 +899,8 @@ int virtio_load(VirtIODevice *vdev, QEMUFile *f)
                          i, vdev->vq[i].last_avail_idx);
                 return -1;
 	}
-        if (vdev->binding->load_queue) {
-            ret = vdev->binding->load_queue(vdev->binding_opaque, i, f);
+        if (k->load_queue) {
+            ret = k->load_queue(qbus->parent, i, f);
             if (ret)
                 return ret;
         }
@@ -916,6 +926,8 @@ void virtio_cleanup(VirtIODevice *vdev)
 static void virtio_vmstate_change(void *opaque, int running, RunState state)
 {
     VirtIODevice *vdev = opaque;
+    BusState *qbus = qdev_get_parent_bus(DEVICE(vdev));
+    VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
     bool backend_run = running && (vdev->status & VIRTIO_CONFIG_S_DRIVER_OK);
     vdev->vm_running = running;
 
@@ -923,8 +935,8 @@ static void virtio_vmstate_change(void *opaque, int running, RunState state)
         virtio_set_status(vdev, vdev->status);
     }
 
-    if (vdev->binding->vmstate_change) {
-        vdev->binding->vmstate_change(vdev->binding_opaque, backend_run);
+    if (k->vmstate_change) {
+        k->vmstate_change(qbus->parent, backend_run);
     }
 
     if (!backend_run) {
@@ -969,13 +981,6 @@ VirtIODevice *virtio_common_init(const char *name, uint16_t device_id,
     return vdev;
 }
 
-void virtio_bind_device(VirtIODevice *vdev, const VirtIOBindings *binding,
-                        DeviceState *opaque)
-{
-    vdev->binding = binding;
-    vdev->binding_opaque = opaque;
-}
-
 hwaddr virtio_queue_get_desc_addr(VirtIODevice *vdev, int n)
 {
     return vdev->vq[n].vring.desc;

include/hw/virtio/virtio-bus.h

@@ -70,10 +70,6 @@ struct VirtioBusState {
      * Only one VirtIODevice can be plugged on the bus.
      */
     VirtIODevice *vdev;
-    /*
-     * This will be removed at the end of the series.
-     */
-    VirtIOBindings bindings;
 };
 
 int virtio_bus_plug_device(VirtIODevice *vdev);

include/hw/virtio/virtio.h

@@ -90,20 +90,6 @@ typedef struct VirtQueueElement
     struct iovec out_sg[VIRTQUEUE_MAX_SIZE];
 } VirtQueueElement;
 
-typedef struct {
-    void (*notify)(DeviceState *d, uint16_t vector);
-    void (*save_config)(DeviceState *d, QEMUFile *f);
-    void (*save_queue)(DeviceState *d, int n, QEMUFile *f);
-    int (*load_config)(DeviceState *d, QEMUFile *f);
-    int (*load_queue)(DeviceState *d, int n, QEMUFile *f);
-    int (*load_done)(DeviceState *d, QEMUFile *f);
-    unsigned (*get_features)(DeviceState *d);
-    bool (*query_guest_notifiers)(DeviceState *d);
-    int (*set_guest_notifiers)(DeviceState *d, int nvqs, bool assigned);
-    int (*set_host_notifier)(DeviceState *d, int n, bool assigned);
-    void (*vmstate_change)(DeviceState *d, bool running);
-} VirtIOBindings;
-
 #define VIRTIO_PCI_QUEUE_MAX 64
 
 #define VIRTIO_NO_VECTOR 0xffff
@@ -129,8 +115,6 @@ struct VirtIODevice
     uint16_t config_vector;
     int nvectors;
     VirtQueue *vq;
-    const VirtIOBindings *binding;
-    DeviceState *binding_opaque;
     uint16_t device_id;
     bool vm_running;
     VMChangeStateEntry *vmstate;
@@ -223,9 +207,6 @@ void virtio_reset(void *opaque);
 void virtio_update_irq(VirtIODevice *vdev);
 int virtio_set_features(VirtIODevice *vdev, uint32_t val);
 
-void virtio_bind_device(VirtIODevice *vdev, const VirtIOBindings *binding,
-                        DeviceState *opaque);
-
 /* Base devices.  */
 typedef struct VirtIOBlkConf VirtIOBlkConf;
 struct virtio_net_conf;