diff options
Diffstat (limited to 'src/jtag/drivers/libusb0_common.c')
| -rw-r--r-- | src/jtag/drivers/libusb0_common.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/src/jtag/drivers/libusb0_common.c b/src/jtag/drivers/libusb0_common.c new file mode 100644 index 00000000..8ed60df9 --- /dev/null +++ b/src/jtag/drivers/libusb0_common.c @@ -0,0 +1,109 @@ +/*************************************************************************** + * 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 "libusb0_common.h" + +static bool jtag_libusb_match(struct jtag_libusb_device *dev, + const uint16_t vids[], const uint16_t pids[]) +{ + for (unsigned i = 0; vids[i] && pids[i]; i++) { + if (dev->descriptor.idVendor == vids[i] && + dev->descriptor.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) +{ + usb_init(); + + usb_find_busses(); + usb_find_devices(); + + struct usb_bus *busses = usb_get_busses(); + for (struct usb_bus *bus = busses; bus; bus = bus->next) { + for (struct usb_device *dev = bus->devices; + dev; dev = dev->next) { + if (!jtag_libusb_match(dev, vids, pids)) + continue; + + *out = usb_open(dev); + if (NULL == *out) + return -errno; + return 0; + } + } + return -ENODEV; +} + +void jtag_libusb_close(jtag_libusb_device_handle *dev) +{ + /* Close device */ + jtag_libusb_close(dev); +} + +int jtag_libusb_bulk_write(jtag_libusb_device_handle *dev, int ep, char *bytes, + int size, int timeout) +{ + return usb_bulk_write(dev, ep, bytes, size, timeout); +} + +int jtag_libusb_bulk_read(jtag_libusb_device_handle *dev, int ep, char *bytes, + int size, int timeout) +{ + return usb_bulk_read(dev, ep, bytes, size, timeout); +} + +int jtag_libusb_set_configuration(jtag_libusb_device_handle *devh, + int configuration) +{ + struct jtag_libusb_device *udev = jtag_libusb_get_device(devh); + + return usb_set_configuration(devh, + udev->config[configuration].bConfigurationValue); +} + +int jtag_libusb_get_endpoints(struct jtag_libusb_device *udev, + unsigned int *usb_read_ep, + unsigned int *usb_write_ep) +{ + struct usb_interface *iface = udev->config->interface; + struct usb_interface_descriptor *desc = iface->altsetting; + + for (int i = 0; i < desc->bNumEndpoints; i++) { + uint8_t epnum = desc->endpoint[i].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; + } + + return 0; +} |