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/*
* 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 GPL v2 or later.
*/
#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 */
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