1 files changed, 69 insertions, 0 deletions
diff --git a/hw/usb/canokey.h b/hw/usb/canokey.h
new file mode 100644
index 0000000..24cf304
--- /dev/null
+++ b/hw/usb/canokey.h
@@ -0,0 +1,69 @@
+/*
+ * CanoKey QEMU device header.
+ *
+ * Copyright (c) 2021-2022 Canokeys.org <contact@canokeys.org>
+ * Written by Hongren (Zenithal) Zheng <i@zenithal.me>
+ *
+ * This code is licensed under the Apache-2.0.
+ */
+
+#ifndef CANOKEY_H
+#define CANOKEY_H
+
+#include "hw/qdev-core.h"
+
+#define TYPE_CANOKEY "canokey"
+#define CANOKEY(obj) \
+    OBJECT_CHECK(CanoKeyState, (obj), TYPE_CANOKEY)
+
+/*
+ * State of Canokey (i.e. hw/canokey.c)
+ */
+
+/* CTRL INTR BULK */
+#define CANOKEY_EP_NUM 3
+/* BULK/INTR IN can be up to 1352 bytes, e.g. get key info */
+#define CANOKEY_EP_IN_BUFFER_SIZE 2048
+/* BULK OUT can be up to 270 bytes, e.g. PIV import cert */
+#define CANOKEY_EP_OUT_BUFFER_SIZE 512
+
+typedef enum {
+    CANOKEY_EP_IN_WAIT,
+    CANOKEY_EP_IN_READY,
+    CANOKEY_EP_IN_STALL
+} CanoKeyEPState;
+
+typedef struct CanoKeyState {
+    USBDevice dev;
+
+    /* IN packets from canokey device loop */
+    uint8_t ep_in[CANOKEY_EP_NUM][CANOKEY_EP_IN_BUFFER_SIZE];
+    /*
+     * See canokey_emu_transmit
+     *
+     * For large INTR IN, receive multiple data from canokey device loop
+     * in this case ep_in_size would increase with every call
+     */
+    uint32_t ep_in_size[CANOKEY_EP_NUM];
+    /*
+     * Used in canokey_handle_data
+     * for IN larger than p->iov.size, we would do multiple handle_data()
+     *
+     * The difference between ep_in_pos and ep_in_size:
+     * We first increase ep_in_size to fill ep_in buffer in device_loop,
+     * then use ep_in_pos to submit data from ep_in buffer in handle_data
+     */
+    uint32_t ep_in_pos[CANOKEY_EP_NUM];
+    CanoKeyEPState ep_in_state[CANOKEY_EP_NUM];
+
+    /* OUT pointer to canokey recv buffer */
+    uint8_t *ep_out[CANOKEY_EP_NUM];
+    uint32_t ep_out_size[CANOKEY_EP_NUM];
+    /* For large BULK OUT, multiple write to ep_out is needed */
+    uint8_t ep_out_buffer[CANOKEY_EP_NUM][CANOKEY_EP_OUT_BUFFER_SIZE];
+
+    /* Properties */
+    char *file; /* canokey-file */
+} CanoKeyState;
+
+#endif /* CANOKEY_H */