[Qemu-devel] [PULL 32/42] virtio-input: core code & base class [pci]

["Michael S. Tsirkin" <mst@redhat.com>]

From: Gerd Hoffmann <kraxel@redhat.com>

This patch adds the virtio-pci support bits for virtio-input-device.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 hw/virtio/virtio-pci.h | 14 ++++++++++++++
 hw/virtio/virtio-pci.c | 36 ++++++++++++++++++++++++++++++++++++
 2 files changed, 50 insertions(+)

diff --git a/hw/virtio/virtio-pci.h b/hw/virtio/virtio-pci.h
index ff5ab71..754971f 100644
--- a/hw/virtio/virtio-pci.h
+++ b/hw/virtio/virtio-pci.h
@@ -24,6 +24,7 @@
 #include "hw/virtio/virtio-balloon.h"
 #include "hw/virtio/virtio-bus.h"
 #include "hw/virtio/virtio-9p.h"
+#include "hw/virtio/virtio-input.h"
 #ifdef CONFIG_VIRTFS
 #include "hw/9pfs/virtio-9p.h"
 #endif
@@ -39,6 +40,7 @@ typedef struct VirtIOSerialPCI VirtIOSerialPCI;
 typedef struct VirtIONetPCI VirtIONetPCI;
 typedef struct VHostSCSIPCI VHostSCSIPCI;
 typedef struct VirtIORngPCI VirtIORngPCI;
+typedef struct VirtIOInputPCI VirtIOInputPCI;
 
 /* virtio-pci-bus */
 
@@ -234,6 +236,18 @@ struct VirtIORngPCI {
     VirtIORNG vdev;
 };
 
+/*
+ * virtio-input-pci: This extends VirtioPCIProxy.
+ */
+#define TYPE_VIRTIO_INPUT_PCI "virtio-input-pci"
+#define VIRTIO_INPUT_PCI(obj) \
+        OBJECT_CHECK(VirtIOInputPCI, (obj), TYPE_VIRTIO_INPUT_PCI)
+
+struct VirtIOInputPCI {
+    VirtIOPCIProxy parent_obj;
+    VirtIOInput vdev;
+};
+
 /* Virtio ABI version, if we increment this, we break the guest driver. */
 #define VIRTIO_PCI_ABI_VERSION          0
 
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index 76653a7..8ec741b 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -24,6 +24,7 @@
 #include "hw/virtio/virtio-serial.h"
 #include "hw/virtio/virtio-scsi.h"
 #include "hw/virtio/virtio-balloon.h"
+#include "hw/virtio/virtio-input.h"
 #include "hw/pci/pci.h"
 #include "qemu/error-report.h"
 #include "hw/pci/msi.h"
@@ -1897,6 +1898,40 @@ static const TypeInfo virtio_rng_pci_info = {
     .class_init    = virtio_rng_pci_class_init,
 };
 
+/* virtio-input-pci */
+
+static void virtio_input_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
+{
+    VirtIOInputPCI *vinput = VIRTIO_INPUT_PCI(vpci_dev);
+    DeviceState *vdev = DEVICE(&vinput->vdev);
+
+    qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
+    /* force virtio-1.0 */
+    vpci_dev->flags &= ~VIRTIO_PCI_FLAG_DISABLE_MODERN;
+    vpci_dev->flags |= VIRTIO_PCI_FLAG_DISABLE_LEGACY;
+    object_property_set_bool(OBJECT(vdev), true, "realized", errp);
+}
+
+static void virtio_input_pci_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
+    PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
+
+    k->realize = virtio_input_pci_realize;
+    set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
+
+    pcidev_k->class_id = PCI_CLASS_INPUT_OTHER;
+}
+
+static const TypeInfo virtio_input_pci_info = {
+    .name          = TYPE_VIRTIO_INPUT_PCI,
+    .parent        = TYPE_VIRTIO_PCI,
+    .instance_size = sizeof(VirtIOInputPCI),
+    .class_init    = virtio_input_pci_class_init,
+    .abstract      = true,
+};
+
 /* virtio-pci-bus */
 
 static void virtio_pci_bus_new(VirtioBusState *bus, size_t bus_size,
@@ -1938,6 +1973,7 @@ static const TypeInfo virtio_pci_bus_info = {
 static void virtio_pci_register_types(void)
 {
     type_register_static(&virtio_rng_pci_info);
+    type_register_static(&virtio_input_pci_info);
     type_register_static(&virtio_pci_bus_info);
     type_register_static(&virtio_pci_info);
 #ifdef CONFIG_VIRTFS
-- 
MST