92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2010 Gareth McMullin <gareth@blacksphere.co.nz>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __USB_PRIVATE_H
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#define __USB_PRIVATE_H
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#define MAX_USER_CONTROL_CALLBACK 4
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#define MIN(a, b) ((a)<(b) ? (a) : (b))
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/** Internal collection of device information. */
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extern struct _usbd_device {
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const struct usb_device_descriptor *desc;
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const struct usb_config_descriptor *config;
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const char **strings;
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u8 *ctrl_buf; /**< Internal buffer used for control transfers */
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u16 ctrl_buf_len;
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u8 current_address;
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u8 current_config;
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u16 pm_top; /**< Top of allocated endpoint buffer memory */
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/* User callback functions for various USB events */
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void (*user_callback_reset)(void);
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void (*user_callback_suspend)(void);
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void (*user_callback_resume)(void);
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struct user_control_callback {
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usbd_control_callback cb;
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u8 type;
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u8 type_mask;
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} user_control_callback[MAX_USER_CONTROL_CALLBACK];
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void (*user_callback_ctr[8][3])(u8 ea);
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/* User callback function for some standard USB function hooks */
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void (*user_callback_set_config)(u16 wValue);
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struct _usbd_driver *driver;
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} _usbd_device;
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enum _usbd_transaction {
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USB_TRANSACTION_IN,
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USB_TRANSACTION_OUT,
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USB_TRANSACTION_SETUP,
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};
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void _usbd_control_in(u8 ea);
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void _usbd_control_out(u8 ea);
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void _usbd_control_setup(u8 ea);
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int _usbd_standard_request(struct usb_setup_data *req, u8 **buf, u16 *len);
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void _usbd_reset(void);
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/* Functions provided by the hardware abstraction. */
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struct _usbd_driver {
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void (*_init)(void);
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void (*_set_address)(u8 addr);
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void (*ep_setup)(u8 addr, u8 type, u16 max_size, void (*cb)(u8 ep));
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void (*_ep_reset)(void);
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void (*ep_stall_set)(u8 addr, u8 stall);
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u8 (*ep_stall_get)(u8 addr);
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u16 (*ep_write_packet)(u8 addr, const void *buf, u16 len);
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u16 (*ep_read_packet)(u8 addr, void *buf, u16 len);
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void (*poll)(void);
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};
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#define _usbd_hw_init() _usbd_device.driver->_init()
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#define _usbd_hw_set_address(addr) _usbd_device.driver->_set_address(addr)
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#define _usbd_hw_endpoints_reset() _usbd_device.driver->_ep_reset()
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#endif
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