libusb-1.0 support
[openocd.git] / src / jtag / drivers / libusb0_common.c
1 /***************************************************************************
2 * Copyright (C) 2009 by Zachary T Welch <zw@superlucidity.net> *
3 * *
4 * Copyright (C) 2011 by Mauro Gamba <maurillo71@gmail.com> *
5 * *
6 * This program is free software; you can redistribute it and/or modify *
7 * it under the terms of the GNU General Public License as published by *
8 * the Free Software Foundation; either version 2 of the License, or *
9 * (at your option) any later version. *
10 * *
11 * This program is distributed in the hope that it will be useful, *
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
14 * GNU General Public License for more details. *
15 * *
16 * You should have received a copy of the GNU General Public License *
17 * along with this program; if not, write to the *
18 * Free Software Foundation, Inc., *
19 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
20 ***************************************************************************/
21
22 #ifdef HAVE_CONFIG_H
23 #include "config.h"
24 #endif
25 #include "log.h"
26 #include "libusb0_common.h"
27
28 static bool jtag_libusb_match(struct jtag_libusb_device *dev,
29 const uint16_t vids[], const uint16_t pids[])
30 {
31 for (unsigned i = 0; vids[i] && pids[i]; i++) {
32 if (dev->descriptor.idVendor == vids[i] &&
33 dev->descriptor.idProduct == pids[i]) {
34 return true;
35 }
36 }
37 return false;
38 }
39
40 int jtag_libusb_open(const uint16_t vids[], const uint16_t pids[],
41 struct jtag_libusb_device_handle **out)
42 {
43 usb_init();
44
45 usb_find_busses();
46 usb_find_devices();
47
48 struct usb_bus *busses = usb_get_busses();
49 for (struct usb_bus *bus = busses; bus; bus = bus->next) {
50 for (struct usb_device *dev = bus->devices;
51 dev; dev = dev->next) {
52 if (!jtag_libusb_match(dev, vids, pids))
53 continue;
54
55 *out = usb_open(dev);
56 if (NULL == *out)
57 return -errno;
58 return 0;
59 }
60 }
61 return -ENODEV;
62 }
63
64 void jtag_libusb_close(jtag_libusb_device_handle *dev)
65 {
66 /* Close device */
67 jtag_libusb_close(dev);
68 }
69
70 int jtag_libusb_bulk_write(jtag_libusb_device_handle *dev, int ep, char *bytes,
71 int size, int timeout)
72 {
73 return usb_bulk_write(dev, ep, bytes, size, timeout);
74 }
75
76 int jtag_libusb_bulk_read(jtag_libusb_device_handle *dev, int ep, char *bytes,
77 int size, int timeout)
78 {
79 return usb_bulk_read(dev, ep, bytes, size, timeout);
80 }
81
82 int jtag_libusb_set_configuration(jtag_libusb_device_handle *devh,
83 int configuration)
84 {
85 struct jtag_libusb_device *udev = jtag_libusb_get_device(devh);
86
87 return usb_set_configuration(devh,
88 udev->config[configuration].bConfigurationValue);
89 }
90
91 int jtag_libusb_get_endpoints(struct jtag_libusb_device *udev,
92 unsigned int *usb_read_ep,
93 unsigned int *usb_write_ep)
94 {
95 struct usb_interface *iface = udev->config->interface;
96 struct usb_interface_descriptor *desc = iface->altsetting;
97
98 for (int i = 0; i < desc->bNumEndpoints; i++) {
99 uint8_t epnum = desc->endpoint[i].bEndpointAddress;
100 bool is_input = epnum & 0x80;
101 LOG_DEBUG("usb ep %s %02x", is_input ? "in" : "out", epnum);
102 if (is_input)
103 *usb_read_ep = epnum;
104 else
105 *usb_write_ep = epnum;
106 }
107
108 return 0;
109 }