virtio-crypto-pci: add virtio crypto pci support

This patch adds virtio-crypto-pci, which is the pci proxy for the virtio
crypto device.

Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

hw/virtio/Makefile.objs

@@ -8,3 +8,4 @@ obj-$(CONFIG_LINUX) += vhost.o vhost-backend.o vhost-user.o
 
 obj-$(CONFIG_VHOST_VSOCK) += vhost-vsock.o
 obj-y += virtio-crypto.o
+obj-$(CONFIG_VIRTIO_PCI) += virtio-crypto-pci.o

hw/virtio/virtio-crypto-pci.c

@@ -0,0 +1,77 @@
+/*
+ * Virtio crypto device
+ *
+ * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
+ *
+ * Authors:
+ *    Gonglei <arei.gonglei@huawei.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * (at your option) any later version.  See the COPYING file in the
+ * top-level directory.
+ *
+ */
+#include "qemu/osdep.h"
+#include "hw/pci/pci.h"
+#include "hw/virtio/virtio.h"
+#include "hw/virtio/virtio-bus.h"
+#include "hw/virtio/virtio-pci.h"
+#include "hw/virtio/virtio-crypto.h"
+#include "qapi/error.h"
+
+static Property virtio_crypto_pci_properties[] = {
+    DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
+                    VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
+    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void virtio_crypto_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
+{
+    VirtIOCryptoPCI *vcrypto = VIRTIO_CRYPTO_PCI(vpci_dev);
+    DeviceState *vdev = DEVICE(&vcrypto->vdev);
+
+    qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
+    virtio_pci_force_virtio_1(vpci_dev);
+    object_property_set_bool(OBJECT(vdev), true, "realized", errp);
+    object_property_set_link(OBJECT(vcrypto),
+                 OBJECT(vcrypto->vdev.conf.cryptodev), "cryptodev",
+                 NULL);
+}
+
+static void virtio_crypto_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_crypto_pci_realize;
+    set_bit(DEVICE_CATEGORY_MISC, dc->categories);
+    dc->props = virtio_crypto_pci_properties;
+
+    pcidev_k->class_id = PCI_CLASS_OTHERS;
+}
+
+static void virtio_crypto_initfn(Object *obj)
+{
+    VirtIOCryptoPCI *dev = VIRTIO_CRYPTO_PCI(obj);
+
+    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
+                                TYPE_VIRTIO_CRYPTO);
+    object_property_add_alias(obj, "cryptodev", OBJECT(&dev->vdev),
+                              "cryptodev", &error_abort);
+}
+
+static const TypeInfo virtio_crypto_pci_info = {
+    .name          = TYPE_VIRTIO_CRYPTO_PCI,
+    .parent        = TYPE_VIRTIO_PCI,
+    .instance_size = sizeof(VirtIOCryptoPCI),
+    .instance_init = virtio_crypto_initfn,
+    .class_init    = virtio_crypto_pci_class_init,
+};
+
+static void virtio_crypto_pci_register_types(void)
+{
+    type_register_static(&virtio_crypto_pci_info);
+}
+type_init(virtio_crypto_pci_register_types)

hw/virtio/virtio-pci.h

@@ -25,6 +25,8 @@
 #include "hw/virtio/virtio-bus.h"
 #include "hw/virtio/virtio-input.h"
 #include "hw/virtio/virtio-gpu.h"
+#include "hw/virtio/virtio-crypto.h"
+
 #ifdef CONFIG_VIRTFS
 #include "hw/9pfs/virtio-9p.h"
 #endif
@@ -48,6 +50,7 @@ typedef struct VirtIOInputHIDPCI VirtIOInputHIDPCI;
 typedef struct VirtIOInputHostPCI VirtIOInputHostPCI;
 typedef struct VirtIOGPUPCI VirtIOGPUPCI;
 typedef struct VHostVSockPCI VHostVSockPCI;
+typedef struct VirtIOCryptoPCI VirtIOCryptoPCI;
 
 /* virtio-pci-bus */
 
@@ -350,6 +353,18 @@ struct VHostVSockPCI {
 };
 #endif
 
+/*
+ * virtio-crypto-pci: This extends VirtioPCIProxy.
+ */
+#define TYPE_VIRTIO_CRYPTO_PCI "virtio-crypto-pci"
+#define VIRTIO_CRYPTO_PCI(obj) \
+        OBJECT_CHECK(VirtIOCryptoPCI, (obj), TYPE_VIRTIO_CRYPTO_PCI)
+
+struct VirtIOCryptoPCI {
+    VirtIOPCIProxy parent_obj;
+    VirtIOCrypto vdev;
+};
+
 /* Virtio ABI version, if we increment this, we break the guest driver. */
 #define VIRTIO_PCI_ABI_VERSION          0