virtio-crypto: add virtio crypto device emulation

Introduce the virtio crypto realization, I'll
finish the core code in the following patches. The
thoughts came from virtio net realization.

For more information see:
http://qemu-project.org/Features/VirtioCrypto

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>

2 files changed, 74 insertions, 1 deletions

diff --git a/include/hw/virtio/virtio-crypto.h b/include/hw/virtio/virtio-crypto.h
new file mode 100644
index 0000000..4652c21
--- /dev/null
+++ b/include/hw/virtio/virtio-crypto.h
@@ -0,0 +1,73 @@
+/*
+ * Virtio crypto Support
+ *
+ * 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.
+ */
+
+#ifndef _QEMU_VIRTIO_CRYPTO_H
+#define _QEMU_VIRTIO_CRYPTO_H
+
+#include "standard-headers/linux/virtio_crypto.h"
+#include "hw/virtio/virtio.h"
+#include "sysemu/iothread.h"
+#include "sysemu/cryptodev.h"
+
+
+#define DEBUG_VIRTIO_CRYPTO 0
+
+#define DPRINTF(fmt, ...) \
+do { \
+    if (DEBUG_VIRTIO_CRYPTO) { \
+        fprintf(stderr, "virtio_crypto: " fmt, ##__VA_ARGS__); \
+    } \
+} while (0)
+
+
+#define TYPE_VIRTIO_CRYPTO "virtio-crypto-device"
+#define VIRTIO_CRYPTO(obj) \
+        OBJECT_CHECK(VirtIOCrypto, (obj), TYPE_VIRTIO_CRYPTO)
+#define VIRTIO_CRYPTO_GET_PARENT_CLASS(obj) \
+        OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_CRYPTO)
+
+
+typedef struct VirtIOCryptoConf {
+    CryptoDevBackend *cryptodev;
+} VirtIOCryptoConf;
+
+struct VirtIOCrypto;
+
+typedef struct VirtIOCryptoReq {
+    VirtQueueElement elem;
+    /* flags of operation, such as type of algorithm */
+    uint32_t flags;
+    VirtQueue *vq;
+    struct VirtIOCrypto *vcrypto;
+    union {
+        CryptoDevBackendSymOpInfo *sym_op_info;
+    } u;
+} VirtIOCryptoReq;
+
+typedef struct VirtIOCrypto {
+    VirtIODevice parent_obj;
+
+    VirtQueue *ctrl_vq;
+
+    VirtIOCryptoConf conf;
+    CryptoDevBackend *cryptodev;
+
+    uint32_t max_queues;
+    uint32_t status;
+
+    int multiqueue;
+    uint32_t curr_queues;
+    size_t config_size;
+} VirtIOCrypto;
+
+#endif /* _QEMU_VIRTIO_CRYPTO_H */
diff --git a/include/standard-headers/linux/virtio_ids.h b/include/standard-headers/linux/virtio_ids.h
index 3228d58..fe74e42 100644
--- a/include/standard-headers/linux/virtio_ids.h
+++ b/include/standard-headers/linux/virtio_ids.h
@@ -42,5 +42,5 @@
 #define VIRTIO_ID_GPU          16 /* virtio GPU */
 #define VIRTIO_ID_INPUT        18 /* virtio input */
 #define VIRTIO_ID_VSOCK        19 /* virtio vsock transport */
-
+#define VIRTIO_ID_CRYPTO       20 /* virtio crypto */
 #endif /* _LINUX_VIRTIO_IDS_H */