/* * This file is part of the libopencm3 project. * * Copyright (C) 2010 Gareth McMullin * * This library is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This library 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this library. If not, see . */ #ifndef __USB_PRIVATE_H #define __USB_PRIVATE_H #define MAX_USER_CONTROL_CALLBACK 4 #define MIN(a, b) ((a)<(b) ? (a) : (b)) /** Internal collection of device information. */ extern struct _usbd_device { const struct usb_device_descriptor *desc; const struct usb_config_descriptor *config; const char **strings; u8 *ctrl_buf; /**< Internal buffer used for control transfers */ u16 ctrl_buf_len; u8 current_address; u8 current_config; u16 pm_top; /**< Top of allocated endpoint buffer memory */ /* User callback functions for various USB events */ void (*user_callback_reset)(void); void (*user_callback_suspend)(void); void (*user_callback_resume)(void); void (*user_callback_sof)(void); struct user_control_callback { usbd_control_callback cb; u8 type; u8 type_mask; } user_control_callback[MAX_USER_CONTROL_CALLBACK]; void (*user_callback_ctr[8][3])(u8 ea); /* User callback function for some standard USB function hooks */ void (*user_callback_set_config)(u16 wValue); const struct _usbd_driver *driver; } _usbd_device; enum _usbd_transaction { USB_TRANSACTION_IN, USB_TRANSACTION_OUT, USB_TRANSACTION_SETUP, }; void _usbd_control_in(u8 ea); void _usbd_control_out(u8 ea); void _usbd_control_setup(u8 ea); int _usbd_standard_request(struct usb_setup_data *req, u8 **buf, u16 *len); void _usbd_reset(void); /* Functions provided by the hardware abstraction. */ struct _usbd_driver { void (*init)(void); void (*set_address)(u8 addr); void (*ep_setup)(u8 addr, u8 type, u16 max_size, void (*cb)(u8 ep)); void (*ep_reset)(void); void (*ep_stall_set)(u8 addr, u8 stall); void (*ep_nak_set)(u8 addr, u8 nak); u8 (*ep_stall_get)(u8 addr); u16 (*ep_write_packet)(u8 addr, const void *buf, u16 len); u16 (*ep_read_packet)(u8 addr, void *buf, u16 len); void (*poll)(void); void (*disconnect)(bool disconnected); }; #define _usbd_hw_init() _usbd_device.driver->init() #define _usbd_hw_set_address(addr) _usbd_device.driver->set_address(addr) #define _usbd_hw_endpoints_reset() _usbd_device.driver->ep_reset() #endif