aboutsummaryrefslogtreecommitdiff
path: root/lib/usb/usb_private.h
blob: 453ed7719597b90c5e313931acc7fb6d59ff1854 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
/*
 * This file is part of the libopenstm32 project.
 *
 * Copyright (C) 2010 Gareth McMullin <gareth@blacksphere.co.nz>
 *
 * 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 __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;

	uint8_t *ctrl_buf;  /**< Internal buffer used for control transfers */
	uint16_t ctrl_buf_len;

	uint8_t current_address;
	uint8_t current_config;

	uint16_t 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);

	struct user_control_callback {
		usbd_control_callback cb;
		uint8_t type;
		uint8_t type_mask;
	} user_control_callback[MAX_USER_CONTROL_CALLBACK];

	void (*user_callback_ctr[8][3])(uint8_t ea);

	/* User callback function for some standard USB function hooks */
	void (*user_callback_set_config)(uint16_t wValue);
} _usbd_device;

enum _usbd_transaction {
	USB_TRANSACTION_IN,
	USB_TRANSACTION_OUT,
	USB_TRANSACTION_SETUP,
};

void _usbd_control_in(uint8_t ea);
void _usbd_control_out(uint8_t ea);
void _usbd_control_setup(uint8_t ea);

int _usbd_standard_request(struct usb_setup_data *req, 
				uint8_t **buf, uint16_t *len);

void _usbd_reset(void);

/* Functions provided by the hardware abstraction */
void _usbd_hw_init(void);
void _usbd_hw_set_address(uint8_t addr);
void _usbd_hw_endpoints_reset(void);

#endif