Introduce Virtio-loopback epsilon release:

Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.

Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9

1 files changed, 62 insertions, 0 deletions

diff --git a/hw/usb/ccid.h b/hw/usb/ccid.h
new file mode 100644
index 000000000..6b82a55bd
--- /dev/null
+++ b/hw/usb/ccid.h
@@ -0,0 +1,62 @@
+/*
+ * CCID Passthru Card Device emulation
+ *
+ * Copyright (c) 2011 Red Hat.
+ * Written by Alon Levy.
+ *
+ * This code is licensed under the GNU LGPL, version 2 or later.
+ */
+
+#ifndef CCID_H
+#define CCID_H
+
+#include "hw/qdev-core.h"
+#include "qom/object.h"
+
+typedef struct CCIDCardInfo CCIDCardInfo;
+
+#define TYPE_CCID_CARD "ccid-card"
+OBJECT_DECLARE_TYPE(CCIDCardState, CCIDCardClass, CCID_CARD)
+
+/*
+ * callbacks to be used by the CCID device (hw/usb-ccid.c) to call
+ * into the smartcard device (hw/ccid-card-*.c)
+ */
+struct CCIDCardClass {
+    /*< private >*/
+    DeviceClass parent_class;
+    /*< public >*/
+    const uint8_t *(*get_atr)(CCIDCardState *card, uint32_t *len);
+    void (*apdu_from_guest)(CCIDCardState *card,
+                            const uint8_t *apdu,
+                            uint32_t len);
+    void (*realize)(CCIDCardState *card, Error **errp);
+    void (*unrealize)(CCIDCardState *card);
+};
+
+/*
+ * state of the CCID Card device (i.e. hw/ccid-card-*.c)
+ */
+struct CCIDCardState {
+    DeviceState qdev;
+    uint32_t    slot; /* For future use with multiple slot reader. */
+};
+
+/*
+ * API for smartcard calling the CCID device (used by hw/ccid-card-*.c)
+ */
+void ccid_card_send_apdu_to_guest(CCIDCardState *card,
+                                  uint8_t *apdu,
+                                  uint32_t len);
+void ccid_card_card_removed(CCIDCardState *card);
+void ccid_card_card_inserted(CCIDCardState *card);
+void ccid_card_card_error(CCIDCardState *card, uint64_t error);
+
+/*
+ * support guest visible insertion/removal of ccid devices based on actual
+ * devices connected/removed. Called by card implementation (passthru, local)
+ */
+int ccid_card_ccid_attach(CCIDCardState *card);
+void ccid_card_ccid_detach(CCIDCardState *card);
+
+#endif /* CCID_H */