1 files changed, 163 insertions, 0 deletions

diff --git a/tools/usb/usbip/libsrc/usbip_device_driver.c b/tools/usb/usbip/libsrc/usbip_device_driver.c
new file mode 100644
index 000000000000..e059b7d1ec5b
--- /dev/null
+++ b/tools/usb/usbip/libsrc/usbip_device_driver.c
@@ -0,0 +1,163 @@
+/*
+ * Copyright (C) 2015 Karol Kosik <karo9@interia.eu>
+ *               2015 Samsung Electronics
+ * Author:       Igor Kotrasinski <i.kotrasinsk@samsung.com>
+ *
+ * Based on tools/usb/usbip/libsrc/usbip_host_driver.c, which is:
+ * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
+ *               2005-2007 Takahiro Hirofuchi
+ *
+ * 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/>.
+ */
+
+#include <fcntl.h>
+#include <string.h>
+#include <linux/usb/ch9.h>
+
+#include <unistd.h>
+
+#include "usbip_host_common.h"
+#include "usbip_device_driver.h"
+
+#undef  PROGNAME
+#define PROGNAME "libusbip"
+
+#define copy_descr_attr16(dev, descr, attr)                     \
+                ((dev)->attr = le16toh((descr)->attr))          \
+
+#define copy_descr_attr(dev, descr, attr)                       \
+                ((dev)->attr = (descr)->attr)                   \
+
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+
+static struct {
+        enum usb_device_speed speed;
+        const char *name;
+} speed_names[] = {
+        {
+                .speed = USB_SPEED_UNKNOWN,
+                .name = "UNKNOWN",
+        },
+        {
+                .speed = USB_SPEED_LOW,
+                .name = "low-speed",
+        },
+        {
+                .speed = USB_SPEED_FULL,
+                .name = "full-speed",
+        },
+        {
+                .speed = USB_SPEED_HIGH,
+                .name = "high-speed",
+        },
+        {
+                .speed = USB_SPEED_WIRELESS,
+                .name = "wireless",
+        },
+        {
+                .speed = USB_SPEED_SUPER,
+                .name = "super-speed",
+        },
+};
+
+static
+int read_usb_vudc_device(struct udev_device *sdev, struct usbip_usb_device *dev)
+{
+        const char *path, *name;
+        char filepath[SYSFS_PATH_MAX];
+        struct usb_device_descriptor descr;
+        unsigned i;
+        FILE *fd = NULL;
+        struct udev_device *plat;
+        const char *speed;
+        int ret = 0;
+
+        plat = udev_device_get_parent(sdev);
+        path = udev_device_get_syspath(plat);
+        snprintf(filepath, SYSFS_PATH_MAX, "%s/%s",
+                 path, VUDC_DEVICE_DESCR_FILE);
+        fd = fopen(filepath, "r");
+        if (!fd)
+                return -1;
+        ret = fread((char *) &descr, sizeof(descr), 1, fd);
+        if (ret < 0)
+                return -1;
+        fclose(fd);
+
+        copy_descr_attr(dev, &descr, bDeviceClass);
+        copy_descr_attr(dev, &descr, bDeviceSubClass);
+        copy_descr_attr(dev, &descr, bDeviceProtocol);
+        copy_descr_attr(dev, &descr, bNumConfigurations);
+        copy_descr_attr16(dev, &descr, idVendor);
+        copy_descr_attr16(dev, &descr, idProduct);
+        copy_descr_attr16(dev, &descr, bcdDevice);
+
+        strncpy(dev->path, path, SYSFS_PATH_MAX);
+
+        dev->speed = USB_SPEED_UNKNOWN;
+        speed = udev_device_get_sysattr_value(sdev, "current_speed");
+        if (speed) {
+                for (i = 0; i < ARRAY_SIZE(speed_names); i++) {
+                        if (!strcmp(speed_names[i].name, speed)) {
+                                dev->speed = speed_names[i].speed;
+                                break;
+                        }
+                }
+        }
+
+        /* Only used for user output, little sense to output them in general */
+        dev->bNumInterfaces = 0;
+        dev->bConfigurationValue = 0;
+        dev->busnum = 0;
+
+        name = udev_device_get_sysname(plat);
+        strncpy(dev->busid, name, SYSFS_BUS_ID_SIZE);
+        return 0;
+}
+
+static int is_my_device(struct udev_device *dev)
+{
+        const char *driver;
+
+        driver = udev_device_get_property_value(dev, "USB_UDC_NAME");
+        return driver != NULL && !strcmp(driver, USBIP_DEVICE_DRV_NAME);
+}
+
+static int usbip_device_driver_open(struct usbip_host_driver *hdriver)
+{
+        int ret;
+
+        hdriver->ndevs = 0;
+        INIT_LIST_HEAD(&hdriver->edev_list);
+
+        ret = usbip_generic_driver_open(hdriver);
+        if (ret)
+                err("please load " USBIP_CORE_MOD_NAME ".ko and "
+                    USBIP_DEVICE_DRV_NAME ".ko!");
+
+        return ret;
+}
+
+struct usbip_host_driver device_driver = {
+        .edev_list = LIST_HEAD_INIT(device_driver.edev_list),
+        .udev_subsystem = "udc",
+        .ops = {
+                .open = usbip_device_driver_open,
+                .close = usbip_generic_driver_close,
+                .refresh_device_list = usbip_generic_refresh_device_list,
+                .get_device = usbip_generic_get_device,
+                .read_device = read_usb_vudc_device,
+                .is_my_device = is_my_device,
+        },
+};