-/***************************************************************************
- * 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, see <http://www.gnu.org/licenses/>. *
- ***************************************************************************/
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-#include "log.h"
-#include "libusb0_common.h"
-
-static int jtag_libusb_error(int err)
-{
- switch (err) {
- case 0:
- return ERROR_OK;
- case -ETIMEDOUT:
- return ERROR_TIMEOUT_REACHED;
- default:
- return ERROR_FAIL;
- }
-}
-
-static bool jtag_libusb_match(struct jtag_libusb_device *dev,
- const uint16_t vids[], const uint16_t pids[])
-{
- for (unsigned i = 0; vids[i]; i++) {
- if (dev->descriptor.idVendor == vids[i] &&
- dev->descriptor.idProduct == pids[i]) {
- return true;
- }
- }
- return false;
-}
-
-/* Returns true if the string descriptor indexed by str_index in device matches string */
-static bool string_descriptor_equal(usb_dev_handle *device, uint8_t str_index,
- const char *string)
-{
- int retval;
- bool matched;
- char desc_string[256+1]; /* Max size of string descriptor */
-
- if (str_index == 0)
- return false;
-
- retval = usb_get_string_simple(device, str_index,
- desc_string, sizeof(desc_string)-1);
- if (retval < 0) {
- LOG_ERROR("usb_get_string_simple() failed with %d", retval);
- return false;
- }
-
- /* Null terminate descriptor string in case it needs to be logged. */
- desc_string[sizeof(desc_string)-1] = '\0';
-
- matched = strncmp(string, desc_string, sizeof(desc_string)) == 0;
- if (!matched)
- LOG_DEBUG("Device serial number '%s' doesn't match requested serial '%s'",
- desc_string, string);
- return matched;
-}
-
-int jtag_libusb_open(const uint16_t vids[], const uint16_t pids[],
- const char *serial,
- struct jtag_libusb_device_handle **out)
-{
- int retval = ERROR_FAIL;
- bool serial_mismatch = false;
- struct jtag_libusb_device_handle *libusb_handle;
- 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;
-
- libusb_handle = usb_open(dev);
- if (NULL == libusb_handle) {
- LOG_ERROR("usb_open() failed with %s", usb_strerror());
- continue;
- }
-
- /* Device must be open to use libusb_get_string_descriptor_ascii. */
- if (serial != NULL &&
- !string_descriptor_equal(libusb_handle, dev->descriptor.iSerialNumber, serial)) {
- serial_mismatch = true;
- usb_close(libusb_handle);
- continue;
- }
- *out = libusb_handle;
- retval = ERROR_OK;
- serial_mismatch = false;
- break;
- }
- }
-
- if (serial_mismatch)
- LOG_INFO("No device matches the serial string");
-
- return retval;
-}
-
-void jtag_libusb_close(jtag_libusb_device_handle *dev)
-{
- /* Close device */
- usb_close(dev);
-}
-
-int jtag_libusb_control_transfer(jtag_libusb_device_handle *dev, uint8_t requestType,
- uint8_t request, uint16_t wValue, uint16_t wIndex, char *bytes,
- uint16_t size, unsigned int timeout)
-{
- int transferred = 0;
-
- transferred = usb_control_msg(dev, requestType, request, wValue, wIndex,
- bytes, size, timeout);
-
- if (transferred < 0)
- transferred = 0;
-
- return transferred;
-}
-
-int jtag_libusb_bulk_write(jtag_libusb_device_handle *dev, int ep, char *bytes,
- int size, int timeout, int *transferred)
-{
- int ret;
-
- *transferred = 0;
-
- ret = usb_bulk_write(dev, ep, bytes, size, timeout);
-
- if (ret < 0) {
- LOG_ERROR("usb_bulk_write error: %i", ret);
- return jtag_libusb_error(ret);
- }
-
- return ERROR_OK;
-}
-
-int jtag_libusb_bulk_read(jtag_libusb_device_handle *dev, int ep, char *bytes,
- int size, int timeout, int *transferred)
-{
- int ret;
-
- *transferred = 0;
-
- ret = usb_bulk_read(dev, ep, bytes, size, timeout);
-
- if (ret < 0) {
- LOG_ERROR("usb_bulk_read error: %i", ret);
- return jtag_libusb_error(ret);
- }
-
- return ERROR_OK;
-}
-
-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_choose_interface(struct jtag_libusb_device_handle *devh,
- unsigned int *usb_read_ep,
- unsigned int *usb_write_ep,
- int bclass, int subclass, int protocol, int trans_type)
-{
- struct jtag_libusb_device *udev = jtag_libusb_get_device(devh);
- struct usb_interface *iface = udev->config->interface;
- struct usb_interface_descriptor *desc = iface->altsetting;
-
- *usb_read_ep = *usb_write_ep = 0;
-
- for (int i = 0; i < desc->bNumEndpoints; i++) {
- if ((bclass > 0 && desc->bInterfaceClass != bclass) ||
- (subclass > 0 && desc->bInterfaceSubClass != subclass) ||
- (protocol > 0 && desc->bInterfaceProtocol != protocol) ||
- (trans_type > 0 && (desc->endpoint[i].bmAttributes & 0x3) != trans_type))
- continue;
-
- 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;
-
- if (*usb_read_ep && *usb_write_ep) {
- LOG_DEBUG("Claiming interface %d", (int)desc->bInterfaceNumber);
- usb_claim_interface(devh, (int)desc->bInterfaceNumber);
- return ERROR_OK;
- }
- }
-
- return ERROR_FAIL;
-}
-
-int jtag_libusb_get_pid(struct jtag_libusb_device *dev, uint16_t *pid)
-{
- if (!dev)
- return ERROR_FAIL;
-
- *pid = dev->descriptor.idProduct;
- return ERROR_OK;
-}
Code Review / openocd.git / commitdiff