trezor-firmware/core/embed/trezorhal/usb.h

/*
 * This file is part of the Trezor project, https://trezor.io/
 *
 * Copyright (c) SatoshiLabs
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __TREZORHAL_USB_H__
#define __TREZORHAL_USB_H__

#include <stdint.h>
#include "secbool.h"

#define USB_EP_DIR_MASK 0x80
#define USB_EP_DIR_OUT 0x00
#define USB_EP_DIR_IN 0x80

typedef struct __attribute__((packed)) {
  uint8_t bLength;
  uint8_t bDescriptorType;
  uint16_t bcdUSB;
  uint8_t bDeviceClass;
  uint8_t bDeviceSubClass;
  uint8_t bDeviceProtocol;
  uint8_t bMaxPacketSize0;
  uint16_t idVendor;
  uint16_t idProduct;
  uint16_t bcdDevice;
  uint8_t iManufacturer;
  uint8_t iProduct;
  uint8_t iSerialNumber;
  uint8_t bNumConfigurations;
} usb_device_descriptor_t;

typedef struct __attribute__((packed)) {
  uint8_t bLength;
  uint8_t bDescriptorType;
  uint16_t wData;
} usb_langid_descriptor_t;

typedef struct __attribute__((packed)) {
  uint8_t bLength;
  uint8_t bDescriptorType;
  uint16_t wTotalLength;
  uint8_t bNumInterfaces;
  uint8_t bConfigurationValue;
  uint8_t iConfiguration;
  uint8_t bmAttributes;
  uint8_t bMaxPower;
} usb_config_descriptor_t;

typedef struct __attribute__((packed)) {
  uint8_t bLength;
  uint8_t bDescriptorType;
  uint8_t bInterfaceNumber;
  uint8_t bAlternateSetting;
  uint8_t bNumEndpoints;
  uint8_t bInterfaceClass;
  uint8_t bInterfaceSubClass;
  uint8_t bInterfaceProtocol;
  uint8_t iInterface;
} usb_interface_descriptor_t;

typedef struct __attribute__((packed)) {
  uint8_t bLength;
  uint8_t bDescriptorType;
  uint8_t bFirstInterface;
  uint8_t bInterfaceCount;
  uint8_t bFunctionClass;
  uint8_t bFunctionSubClass;
  uint8_t bFunctionProtocol;
  uint8_t iFunction;
} usb_interface_assoc_descriptor_t;

typedef struct __attribute__((packed)) {
  uint8_t bLength;
  uint8_t bDescriptorType;
  uint8_t bEndpointAddress;
  uint8_t bmAttributes;
  uint16_t wMaxPacketSize;
  uint8_t bInterval;
} usb_endpoint_descriptor_t;

typedef enum {
  USB_LANGID_ENGLISH_US = 0x409,
} usb_language_id_t;

typedef struct {
  const char *manufacturer;
  const char *product;
  const char *serial_number;
  const char *interface;
} usb_dev_string_table_t;

typedef struct {
  uint8_t device_class;
  uint8_t device_subclass;
  uint8_t device_protocol;
  uint16_t vendor_id;
  uint16_t product_id;
  uint16_t release_num;
  const char *manufacturer;
  const char *product;
  const char *serial_number;
  const char *interface;
  secbool usb21_enabled;
  secbool usb21_landing;
} usb_dev_info_t;

typedef enum {
  USB_IFACE_TYPE_DISABLED = 0,
  USB_IFACE_TYPE_VCP = 1,
  USB_IFACE_TYPE_HID = 2,
  USB_IFACE_TYPE_WEBUSB = 3,
} usb_iface_type_t;

#include "usb_hid-defs.h"
#include "usb_vcp-defs.h"
#include "usb_webusb-defs.h"

typedef struct {
  union {
    usb_hid_state_t hid;
    usb_vcp_state_t vcp;
    usb_webusb_state_t webusb;
  };
  usb_iface_type_t type;
} usb_iface_t;

void usb_init(const usb_dev_info_t *dev_info);
void usb_deinit(void);
void usb_start(void);
void usb_stop(void);
secbool usb_configured(void);

#endif