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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/***************************************************************************
* Copyright (C) 2009 by Zachary T Welch <zw@superlucidity.net> *
* *
* Copyright (C) 2011 by Mauro Gamba <maurillo71@gmail.com> *
* *
* 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 2 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, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "log.h"
#include "libusb1_common.h"
static struct libusb_context *jtag_libusb_context; /**< Libusb context **/
static libusb_device **devs; /**< The usb device list **/
static bool jtag_libusb_match(struct jtag_libusb_device *dev,
const uint16_t vids[], const uint16_t pids[])
{
struct libusb_device_descriptor dev_desc;
for (unsigned i = 0; vids[i] && pids[i]; i++) {
if (libusb_get_device_descriptor(dev, &dev_desc) == 0) {
if (dev_desc.idVendor == vids[i] &&
dev_desc.idProduct == pids[i])
return true;
}
}
return false;
}
int jtag_libusb_open(const uint16_t vids[], const uint16_t pids[],
struct jtag_libusb_device_handle **out)
{
int cnt, idx, errCode;
if (libusb_init(&jtag_libusb_context) < 0)
return -ENODEV;
libusb_set_debug(jtag_libusb_context, 3);
cnt = libusb_get_device_list(jtag_libusb_context, &devs);
for (idx = 0; idx < cnt; idx++) {
if (!jtag_libusb_match(devs[idx], vids, pids))
continue;
errCode = libusb_open(devs[idx], out);
/** Free the device list **/
libusb_free_device_list(devs, 1);
if (errCode < 0)
return errCode;
return 0;
}
return -ENODEV;
}
void jtag_libusb_close(jtag_libusb_device_handle *dev)
{
/* Close device */
libusb_close(dev);
libusb_exit(jtag_libusb_context);
}
int jtag_libusb_bulk_write(jtag_libusb_device_handle *dev, int ep, char *bytes,
int size, int timeout)
{
int transferred = 0;
libusb_bulk_transfer(dev, ep, (unsigned char *)bytes, size,
&transferred, timeout);
return transferred;
}
int jtag_libusb_bulk_read(jtag_libusb_device_handle *dev, int ep, char *bytes,
int size, int timeout)
{
int transferred = 0;
libusb_bulk_transfer(dev, ep, (unsigned char *)bytes, size,
&transferred, timeout);
return transferred;
}
int jtag_libusb_set_configuration(jtag_libusb_device_handle *devh,
int configuration)
{
struct jtag_libusb_device *udev = jtag_libusb_get_device(devh);
int retCode = -99;
struct libusb_config_descriptor *config = NULL;
libusb_get_config_descriptor(udev, configuration, &config);
retCode = libusb_set_configuration(devh, config->bConfigurationValue);
libusb_free_config_descriptor(config);
return retCode;
}
int jtag_libusb_get_endpoints(struct jtag_libusb_device *udev,
unsigned int *usb_read_ep,
unsigned int *usb_write_ep)
{
const struct libusb_interface *inter;
const struct libusb_interface_descriptor *interdesc;
const struct libusb_endpoint_descriptor *epdesc;
struct libusb_config_descriptor *config;
libusb_get_config_descriptor(udev, 0, &config);
for (int i = 0; i < (int)config->bNumInterfaces; i++) {
inter = &config->interface[i];
for (int j = 0; j < inter->num_altsetting; j++) {
interdesc = &inter->altsetting[j];
for (int k = 0;
k < (int)interdesc->bNumEndpoints; k++) {
epdesc = &interdesc->endpoint[k];
uint8_t epnum = epdesc->bEndpointAddress;
bool is_input = epnum & 0x80;
LOG_DEBUG("usb ep %s %02x",
is_input ? "in" : "out", epnum);
if (is_input)
*usb_read_ep = epnum;
else
*usb_write_ep = epnum;
}
}
}
libusb_free_config_descriptor(config);
return 0;
}
|
