1 files changed, 1011 insertions, 0 deletions

diff --git a/lib/libusb/libusb20_ugen20.c b/lib/libusb/libusb20_ugen20.c
new file mode 100644
index 000000000000..1d97db66a65d
--- /dev/null
+++ b/lib/libusb/libusb20_ugen20.c
@@ -0,0 +1,1011 @@
+/* $FreeBSD$ */
+/*-
+ * Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/queue.h>
+#include <sys/types.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <poll.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include "libusb20.h"
+#include "libusb20_desc.h"
+#include "libusb20_int.h"
+
+#include <dev/usb/usb.h>
+#include <dev/usb/usb_ioctl.h>
+#include <dev/usb/usb_mfunc.h>
+#include <dev/usb/usb_error.h>
+#include <dev/usb/usb_revision.h>
+
+static libusb20_init_backend_t ugen20_init_backend;
+static libusb20_open_device_t ugen20_open_device;
+static libusb20_close_device_t ugen20_close_device;
+static libusb20_get_backend_name_t ugen20_get_backend_name;
+static libusb20_exit_backend_t ugen20_exit_backend;
+static libusb20_dev_get_iface_desc_t ugen20_dev_get_iface_desc;
+static libusb20_dev_get_info_t ugen20_dev_get_info;
+static libusb20_root_get_dev_quirk_t ugen20_root_get_dev_quirk;
+static libusb20_root_get_quirk_name_t ugen20_root_get_quirk_name;
+static libusb20_root_add_dev_quirk_t ugen20_root_add_dev_quirk;
+static libusb20_root_remove_dev_quirk_t ugen20_root_remove_dev_quirk;
+static libusb20_root_set_template_t ugen20_root_set_template;
+static libusb20_root_get_template_t ugen20_root_get_template;
+
+const struct libusb20_backend_methods libusb20_ugen20_backend = {
+	LIBUSB20_BACKEND(LIBUSB20_DECLARE, ugen20)
+};
+
+/* USB device specific */
+static libusb20_get_config_desc_full_t ugen20_get_config_desc_full;
+static libusb20_get_config_index_t ugen20_get_config_index;
+static libusb20_set_config_index_t ugen20_set_config_index;
+static libusb20_claim_interface_t ugen20_claim_interface;
+static libusb20_release_interface_t ugen20_release_interface;
+static libusb20_set_alt_index_t ugen20_set_alt_index;
+static libusb20_reset_device_t ugen20_reset_device;
+static libusb20_set_power_mode_t ugen20_set_power_mode;
+static libusb20_get_power_mode_t ugen20_get_power_mode;
+static libusb20_kernel_driver_active_t ugen20_kernel_driver_active;
+static libusb20_detach_kernel_driver_t ugen20_detach_kernel_driver;
+static libusb20_do_request_sync_t ugen20_do_request_sync;
+static libusb20_process_t ugen20_process;
+
+/* USB transfer specific */
+static libusb20_tr_open_t ugen20_tr_open;
+static libusb20_tr_close_t ugen20_tr_close;
+static libusb20_tr_clear_stall_sync_t ugen20_tr_clear_stall_sync;
+static libusb20_tr_submit_t ugen20_tr_submit;
+static libusb20_tr_cancel_async_t ugen20_tr_cancel_async;
+
+static const struct libusb20_device_methods libusb20_ugen20_device_methods = {
+	LIBUSB20_DEVICE(LIBUSB20_DECLARE, ugen20)
+};
+
+static const char *
+ugen20_get_backend_name(void)
+{
+	return ("FreeBSD UGEN 2.0");
+}
+
+static uint32_t
+ugen20_path_convert_one(const char **pp)
+{
+	const char *ptr;
+	uint32_t temp = 0;
+
+	ptr = *pp;
+
+	while ((*ptr >= '0') && (*ptr <= '9')) {
+		temp *= 10;
+		temp += (*ptr - '0');
+		if (temp >= 1000000) {
+			/* catch overflow early */
+			return (0 - 1);
+		}
+		ptr++;
+	}
+
+	if (*ptr == '.') {
+		/* skip dot */
+		ptr++;
+	}
+	*pp = ptr;
+
+	return (temp);
+}
+
+static int
+ugen20_enumerate(struct libusb20_device *pdev, const char *id)
+{
+	const char *tmp = id;
+	struct usb2_device_descriptor ddesc;
+	struct usb2_device_info devinfo;
+	uint32_t plugtime;
+	char buf[64];
+	int f;
+	int error;
+
+	pdev->bus_number = ugen20_path_convert_one(&tmp);
+	pdev->device_address = ugen20_path_convert_one(&tmp);
+
+	snprintf(buf, sizeof(buf), "/dev/" USB_GENERIC_NAME "%u.%u",
+	    pdev->bus_number, pdev->device_address);
+
+	f = open(buf, O_RDWR);
+	if (f < 0) {
+		return (LIBUSB20_ERROR_OTHER);
+	}
+	if (ioctl(f, USB_GET_PLUGTIME, &plugtime)) {
+		error = LIBUSB20_ERROR_OTHER;
+		goto done;
+	}
+	/* store when the device was plugged */
+	pdev->session_data.plugtime = plugtime;
+
+	if (ioctl(f, USB_GET_DEVICE_DESC, &ddesc)) {
+		error = LIBUSB20_ERROR_OTHER;
+		goto done;
+	}
+	LIBUSB20_INIT(LIBUSB20_DEVICE_DESC, &(pdev->ddesc));
+
+	libusb20_me_decode(&ddesc, sizeof(ddesc), &(pdev->ddesc));
+
+	if (pdev->ddesc.bNumConfigurations == 0) {
+		error = LIBUSB20_ERROR_OTHER;
+		goto done;
+	} else if (pdev->ddesc.bNumConfigurations >= 8) {
+		error = LIBUSB20_ERROR_OTHER;
+		goto done;
+	}
+	if (ioctl(f, USB_GET_DEVICEINFO, &devinfo)) {
+		error = LIBUSB20_ERROR_OTHER;
+		goto done;
+	}
+	switch (devinfo.udi_mode) {
+	case USB_MODE_DEVICE:
+		pdev->usb_mode = LIBUSB20_MODE_DEVICE;
+		break;
+	default:
+		pdev->usb_mode = LIBUSB20_MODE_HOST;
+		break;
+	}
+
+	switch (devinfo.udi_speed) {
+	case USB_SPEED_LOW:
+		pdev->usb_speed = LIBUSB20_SPEED_LOW;
+		break;
+	case USB_SPEED_FULL:
+		pdev->usb_speed = LIBUSB20_SPEED_FULL;
+		break;
+	case USB_SPEED_HIGH:
+		pdev->usb_speed = LIBUSB20_SPEED_HIGH;
+		break;
+	case USB_SPEED_VARIABLE:
+		pdev->usb_speed = LIBUSB20_SPEED_VARIABLE;
+		break;
+	case USB_SPEED_SUPER:
+		pdev->usb_speed = LIBUSB20_SPEED_SUPER;
+		break;
+	default:
+		pdev->usb_speed = LIBUSB20_SPEED_UNKNOWN;
+		break;
+	}
+
+	/* generate a nice description for printout */
+
+	snprintf(pdev->usb_desc, sizeof(pdev->usb_desc),
+	    USB_GENERIC_NAME "%u.%u: <%s %s> at usbus%u", pdev->bus_number,
+	    pdev->device_address, devinfo.udi_product,
+	    devinfo.udi_vendor, pdev->bus_number);
+
+	error = 0;
+done:
+	close(f);
+	return (error);
+}
+
+struct ugen20_urd_state {
+	struct usb2_read_dir urd;
+	uint32_t nparsed;
+	int	f;
+	uint8_t *ptr;
+	const char *src;
+	const char *dst;
+	uint8_t	buf[256];
+	uint8_t	dummy_zero[1];
+};
+
+static int
+ugen20_readdir(struct ugen20_urd_state *st)
+{
+	;				/* style fix */
+repeat:
+	if (st->ptr == NULL) {
+		st->urd.urd_startentry += st->nparsed;
+		st->urd.urd_data = st->buf;
+		st->urd.urd_maxlen = sizeof(st->buf);
+		st->nparsed = 0;
+
+		if (ioctl(st->f, USB_READ_DIR, &st->urd)) {
+			return (EINVAL);
+		}
+		st->ptr = st->buf;
+	}
+	if (st->ptr[0] == 0) {
+		if (st->nparsed) {
+			st->ptr = NULL;
+			goto repeat;
+		} else {
+			return (ENXIO);
+		}
+	}
+	st->src = (void *)(st->ptr + 1);
+	st->dst = st->src + strlen(st->src) + 1;
+	st->ptr = st->ptr + st->ptr[0];
+	st->nparsed++;
+
+	if ((st->ptr < st->buf) ||
+	    (st->ptr > st->dummy_zero)) {
+		/* invalid entry */
+		return (EINVAL);
+	}
+	return (0);
+}
+
+static int
+ugen20_init_backend(struct libusb20_backend *pbe)
+{
+	struct ugen20_urd_state state;
+	struct libusb20_device *pdev;
+
+	memset(&state, 0, sizeof(state));
+
+	state.f = open("/dev/" USB_DEVICE_NAME, O_RDONLY);
+	if (state.f < 0)
+		return (LIBUSB20_ERROR_OTHER);
+
+	while (ugen20_readdir(&state) == 0) {
+
+		if ((state.src[0] != 'u') ||
+		    (state.src[1] != 'g') ||
+		    (state.src[2] != 'e') ||
+		    (state.src[3] != 'n')) {
+			continue;
+		}
+		pdev = libusb20_dev_alloc();
+		if (pdev == NULL) {
+			continue;
+		}
+		if (ugen20_enumerate(pdev, state.src + 4)) {
+			libusb20_dev_free(pdev);
+			continue;
+		}
+		/* put the device on the backend list */
+		libusb20_be_enqueue_device(pbe, pdev);
+	}
+	close(state.f);
+	return (0);			/* success */
+}
+
+static void
+ugen20_tr_release(struct libusb20_device *pdev)
+{
+	struct usb2_fs_uninit fs_uninit;
+
+	if (pdev->nTransfer == 0) {
+		return;
+	}
+	/* release all pending USB transfers */
+	if (pdev->privBeData != NULL) {
+		memset(&fs_uninit, 0, sizeof(fs_uninit));
+		if (ioctl(pdev->file, USB_FS_UNINIT, &fs_uninit)) {
+			/* ignore any errors of this kind */
+		}
+	}
+	return;
+}
+
+static int
+ugen20_tr_renew(struct libusb20_device *pdev)
+{
+	struct usb2_fs_init fs_init;
+	struct usb2_fs_endpoint *pfse;
+	int error;
+	uint32_t size;
+	uint16_t nMaxTransfer;
+
+	nMaxTransfer = pdev->nTransfer;
+	error = 0;
+
+	if (nMaxTransfer == 0) {
+		goto done;
+	}
+	size = nMaxTransfer * sizeof(*pfse);
+
+	if (pdev->privBeData == NULL) {
+		pfse = malloc(size);
+		if (pfse == NULL) {
+			error = LIBUSB20_ERROR_NO_MEM;
+			goto done;
+		}
+		pdev->privBeData = pfse;
+	}
+	/* reset endpoint data */
+	memset(pdev->privBeData, 0, size);
+
+	memset(&fs_init, 0, sizeof(fs_init));
+
+	fs_init.pEndpoints = pdev->privBeData;
+	fs_init.ep_index_max = nMaxTransfer;
+
+	if (ioctl(pdev->file, USB_FS_INIT, &fs_init)) {
+		error = LIBUSB20_ERROR_OTHER;
+		goto done;
+	}
+done:
+	return (error);
+}
+
+static int
+ugen20_open_device(struct libusb20_device *pdev, uint16_t nMaxTransfer)
+{
+	uint32_t plugtime;
+	char buf[64];
+	int f;
+	int g;
+	int error;
+
+	snprintf(buf, sizeof(buf), "/dev/" USB_GENERIC_NAME "%u.%u",
+	    pdev->bus_number, pdev->device_address);
+
+	/*
+	 * We need two file handles, one for the control endpoint and one
+	 * for BULK, INTERRUPT and ISOCHRONOUS transactions due to optimised
+	 * kernel locking.
+	 */
+	g = open(buf, O_RDWR);
+	if (g < 0) {
+		return (LIBUSB20_ERROR_NO_DEVICE);
+	}
+	f = open(buf, O_RDWR);
+	if (f < 0) {
+		close(g);
+		return (LIBUSB20_ERROR_NO_DEVICE);
+	}
+	if (ioctl(f, USB_GET_PLUGTIME, &plugtime)) {
+		error = LIBUSB20_ERROR_OTHER;
+		goto done;
+	}
+	/* check that the correct device is still plugged */
+	if (pdev->session_data.plugtime != plugtime) {
+		error = LIBUSB20_ERROR_NO_DEVICE;
+		goto done;
+	}
+	/* need to set this before "tr_renew()" */
+	pdev->file = f;
+	pdev->file_ctrl = g;
+
+	/* renew all USB transfers */
+	error = ugen20_tr_renew(pdev);
+	if (error) {
+		goto done;
+	}
+	/* set methods */
+	pdev->methods = &libusb20_ugen20_device_methods;
+
+done:
+	if (error) {
+		if (pdev->privBeData) {
+			/* cleanup after "tr_renew()" */
+			free(pdev->privBeData);
+			pdev->privBeData = NULL;
+		}
+		pdev->file = -1;
+		pdev->file_ctrl = -1;
+		close(f);
+		close(g);
+	}
+	return (error);
+}
+
+static int
+ugen20_close_device(struct libusb20_device *pdev)
+{
+	struct usb2_fs_uninit fs_uninit;
+
+	if (pdev->privBeData) {
+		memset(&fs_uninit, 0, sizeof(fs_uninit));
+		if (ioctl(pdev->file, USB_FS_UNINIT, &fs_uninit)) {
+			/* ignore this error */
+		}
+		free(pdev->privBeData);
+	}
+	pdev->nTransfer = 0;
+	pdev->privBeData = NULL;
+	close(pdev->file);
+	close(pdev->file_ctrl);
+	pdev->file = -1;
+	pdev->file_ctrl = -1;
+	return (0);			/* success */
+}
+
+static void
+ugen20_exit_backend(struct libusb20_backend *pbe)
+{
+	return;				/* nothing to do */
+}
+
+static int
+ugen20_get_config_desc_full(struct libusb20_device *pdev,
+    uint8_t **ppbuf, uint16_t *plen, uint8_t cfg_index)
+{
+	struct usb2_gen_descriptor gen_desc;
+	struct usb2_config_descriptor cdesc;
+	uint8_t *ptr;
+	uint16_t len;
+	int error;
+
+	memset(&gen_desc, 0, sizeof(gen_desc));
+
+	gen_desc.ugd_data = &cdesc;
+	gen_desc.ugd_maxlen = sizeof(cdesc);
+	gen_desc.ugd_config_index = cfg_index;
+
+	error = ioctl(pdev->file_ctrl, USB_GET_FULL_DESC, &gen_desc);
+	if (error) {
+		return (LIBUSB20_ERROR_OTHER);
+	}
+	len = UGETW(cdesc.wTotalLength);
+	if (len < sizeof(cdesc)) {
+		/* corrupt descriptor */
+		return (LIBUSB20_ERROR_OTHER);
+	}
+	ptr = malloc(len);
+	if (!ptr) {
+		return (LIBUSB20_ERROR_NO_MEM);
+	}
+	gen_desc.ugd_data = ptr;
+	gen_desc.ugd_maxlen = len;
+
+	error = ioctl(pdev->file_ctrl, USB_GET_FULL_DESC, &gen_desc);
+	if (error) {
+		free(ptr);
+		return (LIBUSB20_ERROR_OTHER);
+	}
+	/* make sure that the device doesn't fool us */
+	memcpy(ptr, &cdesc, sizeof(cdesc));
+
+	*ppbuf = ptr;
+	*plen = len;
+
+	return (0);			/* success */
+}
+
+static int
+ugen20_get_config_index(struct libusb20_device *pdev, uint8_t *pindex)
+{
+	int temp;
+
+	if (ioctl(pdev->file_ctrl, USB_GET_CONFIG, &temp)) {
+		return (LIBUSB20_ERROR_OTHER);
+	}
+	*pindex = temp;
+
+	return (0);
+}
+
+static int
+ugen20_set_config_index(struct libusb20_device *pdev, uint8_t cfg_index)
+{
+	int temp = cfg_index;
+
+	/* release all active USB transfers */
+	ugen20_tr_release(pdev);
+
+	if (ioctl(pdev->file_ctrl, USB_SET_CONFIG, &temp)) {
+		return (LIBUSB20_ERROR_OTHER);
+	}
+	return (ugen20_tr_renew(pdev));
+}
+
+static int
+ugen20_claim_interface(struct libusb20_device *pdev, uint8_t iface_index)
+{
+	int temp = iface_index;
+
+	if (ioctl(pdev->file_ctrl, USB_CLAIM_INTERFACE, &temp)) {
+		return (LIBUSB20_ERROR_OTHER);
+	}
+	return (0);
+}
+
+static int
+ugen20_release_interface(struct libusb20_device *pdev, uint8_t iface_index)
+{
+	int temp = iface_index;
+
+	if (ioctl(pdev->file_ctrl, USB_RELEASE_INTERFACE, &temp)) {
+		return (LIBUSB20_ERROR_OTHER);
+	}
+	return (0);
+}
+
+static int
+ugen20_set_alt_index(struct libusb20_device *pdev,
+    uint8_t iface_index, uint8_t alt_index)
+{
+	struct usb2_alt_interface alt_iface;
+
+	memset(&alt_iface, 0, sizeof(alt_iface));
+
+	alt_iface.uai_interface_index = iface_index;
+	alt_iface.uai_alt_index = alt_index;
+
+	/* release all active USB transfers */
+	ugen20_tr_release(pdev);
+
+	if (ioctl(pdev->file_ctrl, USB_SET_ALTINTERFACE, &alt_iface)) {
+		return (LIBUSB20_ERROR_OTHER);
+	}
+	return (ugen20_tr_renew(pdev));
+}
+
+static int
+ugen20_reset_device(struct libusb20_device *pdev)
+{
+	int temp = 0;
+
+	/* release all active USB transfers */
+	ugen20_tr_release(pdev);
+
+	if (ioctl(pdev->file_ctrl, USB_DEVICEENUMERATE, &temp)) {
+		return (LIBUSB20_ERROR_OTHER);
+	}
+	return (ugen20_tr_renew(pdev));
+}
+
+static int
+ugen20_set_power_mode(struct libusb20_device *pdev, uint8_t power_mode)
+{
+	int temp;
+
+	switch (power_mode) {
+	case LIBUSB20_POWER_OFF:
+		temp = USB_POWER_MODE_OFF;
+		break;
+	case LIBUSB20_POWER_ON:
+		temp = USB_POWER_MODE_ON;
+		break;
+	case LIBUSB20_POWER_SAVE:
+		temp = USB_POWER_MODE_SAVE;
+		break;
+	case LIBUSB20_POWER_SUSPEND:
+		temp = USB_POWER_MODE_SUSPEND;
+		break;
+	case LIBUSB20_POWER_RESUME:
+		temp = USB_POWER_MODE_RESUME;
+		break;
+	default:
+		return (LIBUSB20_ERROR_INVALID_PARAM);
+	}
+	if (ioctl(pdev->file_ctrl, USB_SET_POWER_MODE, &temp)) {
+		return (LIBUSB20_ERROR_OTHER);
+	}
+	return (0);
+}
+
+static int
+ugen20_get_power_mode(struct libusb20_device *pdev, uint8_t *power_mode)
+{
+	int temp;
+
+	if (ioctl(pdev->file_ctrl, USB_GET_POWER_MODE, &temp)) {
+		return (LIBUSB20_ERROR_OTHER);
+	}
+	switch (temp) {
+	case USB_POWER_MODE_OFF:
+		temp = LIBUSB20_POWER_OFF;
+		break;
+	case USB_POWER_MODE_ON:
+		temp = LIBUSB20_POWER_ON;
+		break;
+	case USB_POWER_MODE_SAVE:
+		temp = LIBUSB20_POWER_SAVE;
+		break;
+	case USB_POWER_MODE_SUSPEND:
+		temp = LIBUSB20_POWER_SUSPEND;
+		break;
+	case USB_POWER_MODE_RESUME:
+		temp = LIBUSB20_POWER_RESUME;
+		break;
+	default:
+		temp = LIBUSB20_POWER_ON;
+		break;
+	}
+	*power_mode = temp;
+	return (0);			/* success */
+}
+
+static int
+ugen20_kernel_driver_active(struct libusb20_device *pdev,
+    uint8_t iface_index)
+{
+	int temp = iface_index;
+
+	if (ioctl(pdev->file_ctrl, USB_IFACE_DRIVER_ACTIVE, &temp)) {
+		return (LIBUSB20_ERROR_OTHER);
+	}
+	return (0);			/* kernel driver is active */
+}
+
+static int
+ugen20_detach_kernel_driver(struct libusb20_device *pdev,
+    uint8_t iface_index)
+{
+	int temp = iface_index;
+
+	if (ioctl(pdev->file_ctrl, USB_IFACE_DRIVER_DETACH, &temp)) {
+		return (LIBUSB20_ERROR_OTHER);
+	}
+	return (0);			/* kernel driver is active */
+}
+
+static int
+ugen20_do_request_sync(struct libusb20_device *pdev,
+    struct LIBUSB20_CONTROL_SETUP_DECODED *setup,
+    void *data, uint16_t *pactlen, uint32_t timeout, uint8_t flags)
+{
+	struct usb2_ctl_request req;
+
+	memset(&req, 0, sizeof(req));
+
+	req.ucr_data = data;
+	if (!(flags & LIBUSB20_TRANSFER_SINGLE_SHORT_NOT_OK)) {
+		req.ucr_flags |= USB_SHORT_XFER_OK;
+	}
+	if (libusb20_me_encode(&req.ucr_request,
+	    sizeof(req.ucr_request), setup)) {
+		/* ignore */
+	}
+	if (ioctl(pdev->file_ctrl, USB_DO_REQUEST, &req)) {
+		return (LIBUSB20_ERROR_OTHER);
+	}
+	if (pactlen) {
+		/* get actual length */
+		*pactlen = req.ucr_actlen;
+	}
+	return (0);			/* kernel driver is active */
+}
+
+static int
+ugen20_process(struct libusb20_device *pdev)
+{
+	struct usb2_fs_complete temp;
+	struct usb2_fs_endpoint *fsep;
+	struct libusb20_transfer *xfer;
+
+	while (1) {
+
+		if (ioctl(pdev->file, USB_FS_COMPLETE, &temp)) {
+			if (errno == EBUSY) {
+				break;
+			} else {
+				/* device detached */
+				return (LIBUSB20_ERROR_OTHER);
+			}
+		}
+		fsep = pdev->privBeData;
+		xfer = pdev->pTransfer;
+		fsep += temp.ep_index;
+		xfer += temp.ep_index;
+
+		/* update transfer status */
+
+		if (fsep->status == 0) {
+			xfer->aFrames = fsep->aFrames;
+			xfer->timeComplete = fsep->isoc_time_complete;
+			xfer->status = LIBUSB20_TRANSFER_COMPLETED;
+		} else if (fsep->status == USB_ERR_CANCELLED) {
+			xfer->aFrames = 0;
+			xfer->timeComplete = 0;
+			xfer->status = LIBUSB20_TRANSFER_CANCELLED;
+		} else if (fsep->status == USB_ERR_STALLED) {
+			xfer->aFrames = 0;
+			xfer->timeComplete = 0;
+			xfer->status = LIBUSB20_TRANSFER_STALL;
+		} else if (fsep->status == USB_ERR_TIMEOUT) {
+			xfer->aFrames = 0;
+			xfer->timeComplete = 0;
+			xfer->status = LIBUSB20_TRANSFER_TIMED_OUT;
+		} else {
+			xfer->aFrames = 0;
+			xfer->timeComplete = 0;
+			xfer->status = LIBUSB20_TRANSFER_ERROR;
+		}
+		libusb20_tr_callback_wrapper(xfer);
+	}
+	return (0);			/* done */
+}
+
+static int
+ugen20_tr_open(struct libusb20_transfer *xfer, uint32_t MaxBufSize,
+    uint32_t MaxFrameCount, uint8_t ep_no)
+{
+	struct usb2_fs_open temp;
+	struct usb2_fs_endpoint *fsep;
+
+	memset(&temp, 0, sizeof(temp));
+
+	fsep = xfer->pdev->privBeData;
+	fsep += xfer->trIndex;
+
+	temp.max_bufsize = MaxBufSize;
+	temp.max_frames = MaxFrameCount;
+	temp.ep_index = xfer->trIndex;
+	temp.ep_no = ep_no;
+
+	if (ioctl(xfer->pdev->file, USB_FS_OPEN, &temp)) {
+		return (LIBUSB20_ERROR_INVALID_PARAM);
+	}
+	/* maximums might have changed - update */
+	xfer->maxFrames = temp.max_frames;
+
+	/* "max_bufsize" should be multiple of "max_packet_length" */
+	xfer->maxTotalLength = temp.max_bufsize;
+	xfer->maxPacketLen = temp.max_packet_length;
+
+	/* setup buffer and length lists */
+	fsep->ppBuffer = xfer->ppBuffer;/* zero copy */
+	fsep->pLength = xfer->pLength;	/* zero copy */
+
+	return (0);			/* success */
+}
+
+static int
+ugen20_tr_close(struct libusb20_transfer *xfer)
+{
+	struct usb2_fs_close temp;
+
+	memset(&temp, 0, sizeof(temp));
+
+	temp.ep_index = xfer->trIndex;
+
+	if (ioctl(xfer->pdev->file, USB_FS_CLOSE, &temp)) {
+		return (LIBUSB20_ERROR_INVALID_PARAM);
+	}
+	return (0);			/* success */
+}
+
+static int
+ugen20_tr_clear_stall_sync(struct libusb20_transfer *xfer)
+{
+	struct usb2_fs_clear_stall_sync temp;
+
+	memset(&temp, 0, sizeof(temp));
+
+	/* if the transfer is active, an error will be returned */
+
+	temp.ep_index = xfer->trIndex;
+
+	if (ioctl(xfer->pdev->file, USB_FS_CLEAR_STALL_SYNC, &temp)) {
+		return (LIBUSB20_ERROR_INVALID_PARAM);
+	}
+	return (0);			/* success */
+}
+
+static void
+ugen20_tr_submit(struct libusb20_transfer *xfer)
+{
+	struct usb2_fs_start temp;
+	struct usb2_fs_endpoint *fsep;
+
+	memset(&temp, 0, sizeof(temp));
+
+	fsep = xfer->pdev->privBeData;
+	fsep += xfer->trIndex;
+
+	fsep->nFrames = xfer->nFrames;
+	fsep->flags = 0;
+	if (!(xfer->flags & LIBUSB20_TRANSFER_SINGLE_SHORT_NOT_OK)) {
+		fsep->flags |= USB_FS_FLAG_SINGLE_SHORT_OK;
+	}
+	if (!(xfer->flags & LIBUSB20_TRANSFER_MULTI_SHORT_NOT_OK)) {
+		fsep->flags |= USB_FS_FLAG_MULTI_SHORT_OK;
+	}
+	if (xfer->flags & LIBUSB20_TRANSFER_FORCE_SHORT) {
+		fsep->flags |= USB_FS_FLAG_FORCE_SHORT;
+	}
+	if (xfer->flags & LIBUSB20_TRANSFER_DO_CLEAR_STALL) {
+		fsep->flags |= USB_FS_FLAG_CLEAR_STALL;
+	}
+	fsep->timeout = xfer->timeout;
+
+	temp.ep_index = xfer->trIndex;
+
+	if (ioctl(xfer->pdev->file, USB_FS_START, &temp)) {
+		/* ignore any errors - should never happen */
+	}
+	return;				/* success */
+}
+
+static void
+ugen20_tr_cancel_async(struct libusb20_transfer *xfer)
+{
+	struct usb2_fs_stop temp;
+
+	memset(&temp, 0, sizeof(temp));
+
+	temp.ep_index = xfer->trIndex;
+
+	if (ioctl(xfer->pdev->file, USB_FS_STOP, &temp)) {
+		/* ignore any errors - should never happen */
+	}
+	return;
+}
+
+static int
+ugen20_be_ioctl(uint32_t cmd, void *data)
+{
+	int f;
+	int error;
+
+	f = open("/dev/" USB_DEVICE_NAME, O_RDONLY);
+	if (f < 0)
+		return (LIBUSB20_ERROR_OTHER);
+	error = ioctl(f, cmd, data);
+	if (error == -1) {
+		if (errno == EPERM) {
+			error = LIBUSB20_ERROR_ACCESS;
+		} else {
+			error = LIBUSB20_ERROR_OTHER;
+		}
+	}
+	close(f);
+	return (error);
+}
+
+static int
+ugen20_dev_get_iface_desc(struct libusb20_device *pdev, 
+    uint8_t iface_index, char *buf, uint8_t len)
+{
+	struct usb2_gen_descriptor ugd;
+
+	memset(&ugd, 0, sizeof(ugd));
+
+	ugd.ugd_data = buf;
+	ugd.ugd_maxlen = len;
+	ugd.ugd_iface_index = iface_index;
+
+	if (ioctl(pdev->file, USB_GET_IFACE_DRIVER, &ugd)) {
+		return (LIBUSB20_ERROR_INVALID_PARAM);
+	}
+	return (0);
+}
+
+static int
+ugen20_dev_get_info(struct libusb20_device *pdev,
+    struct usb2_device_info *pinfo)
+{
+	if (ioctl(pdev->file, USB_GET_DEVICEINFO, pinfo)) {
+		return (LIBUSB20_ERROR_INVALID_PARAM);
+	}
+	return (0);
+}
+
+static int
+ugen20_root_get_dev_quirk(struct libusb20_backend *pbe,
+    uint16_t quirk_index, struct libusb20_quirk *pq)
+{
+	struct usb2_gen_quirk q;
+	int error;
+
+	memset(&q, 0, sizeof(q));
+
+	q.index = quirk_index;
+
+	error = ugen20_be_ioctl(USB_DEV_QUIRK_GET, &q);
+
+	if (error) {
+		if (errno == EINVAL) {
+			return (LIBUSB20_ERROR_NOT_FOUND);
+		}
+	} else {
+		pq->vid = q.vid;
+		pq->pid = q.pid;
+		pq->bcdDeviceLow = q.bcdDeviceLow;
+		pq->bcdDeviceHigh = q.bcdDeviceHigh;
+		strlcpy(pq->quirkname, q.quirkname, sizeof(pq->quirkname));
+	}
+	return (error);
+}
+
+static int
+ugen20_root_get_quirk_name(struct libusb20_backend *pbe, uint16_t quirk_index,
+    struct libusb20_quirk *pq)
+{
+	struct usb2_gen_quirk q;
+	int error;
+
+	memset(&q, 0, sizeof(q));
+
+	q.index = quirk_index;
+
+	error = ugen20_be_ioctl(USB_QUIRK_NAME_GET, &q);
+
+	if (error) {
+		if (errno == EINVAL) {
+			return (LIBUSB20_ERROR_NOT_FOUND);
+		}
+	} else {
+		strlcpy(pq->quirkname, q.quirkname, sizeof(pq->quirkname));
+	}
+	return (error);
+}
+
+static int
+ugen20_root_add_dev_quirk(struct libusb20_backend *pbe,
+    struct libusb20_quirk *pq)
+{
+	struct usb2_gen_quirk q;
+	int error;
+
+	memset(&q, 0, sizeof(q));
+
+	q.vid = pq->vid;
+	q.pid = pq->pid;
+	q.bcdDeviceLow = pq->bcdDeviceLow;
+	q.bcdDeviceHigh = pq->bcdDeviceHigh;
+	strlcpy(q.quirkname, pq->quirkname, sizeof(q.quirkname));
+
+	error = ugen20_be_ioctl(USB_DEV_QUIRK_ADD, &q);
+	if (error) {
+		if (errno == ENOMEM) {
+			return (LIBUSB20_ERROR_NO_MEM);
+		}
+	}
+	return (error);
+}
+
+static int
+ugen20_root_remove_dev_quirk(struct libusb20_backend *pbe,
+    struct libusb20_quirk *pq)
+{
+	struct usb2_gen_quirk q;
+	int error;
+
+	memset(&q, 0, sizeof(q));
+
+	q.vid = pq->vid;
+	q.pid = pq->pid;
+	q.bcdDeviceLow = pq->bcdDeviceLow;
+	q.bcdDeviceHigh = pq->bcdDeviceHigh;
+	strlcpy(q.quirkname, pq->quirkname, sizeof(q.quirkname));
+
+	error = ugen20_be_ioctl(USB_DEV_QUIRK_REMOVE, &q);
+	if (error) {
+		if (errno == EINVAL) {
+			return (LIBUSB20_ERROR_NOT_FOUND);
+		}
+	}
+	return (error);
+}
+
+static int
+ugen20_root_set_template(struct libusb20_backend *pbe, int temp)
+{
+	return (ugen20_be_ioctl(USB_SET_TEMPLATE, &temp));
+}
+
+static int
+ugen20_root_get_template(struct libusb20_backend *pbe, int *ptemp)
+{
+	return (ugen20_be_ioctl(USB_GET_TEMPLATE, ptemp));
+}