11ccea77eSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later
27b3f74f7SKrzysztof Opasiak /*
37b3f74f7SKrzysztof Opasiak * Copyright (C) 2015 Karol Kosik <karo9@interia.eu>
47b3f74f7SKrzysztof Opasiak * 2015 Samsung Electronics
57b3f74f7SKrzysztof Opasiak * Author: Igor Kotrasinski <i.kotrasinsk@samsung.com>
67b3f74f7SKrzysztof Opasiak *
77b3f74f7SKrzysztof Opasiak * Based on tools/usb/usbip/libsrc/usbip_host_driver.c, which is:
87b3f74f7SKrzysztof Opasiak * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
97b3f74f7SKrzysztof Opasiak * 2005-2007 Takahiro Hirofuchi
107b3f74f7SKrzysztof Opasiak */
117b3f74f7SKrzysztof Opasiak
127b3f74f7SKrzysztof Opasiak #include <fcntl.h>
137b3f74f7SKrzysztof Opasiak #include <string.h>
147b3f74f7SKrzysztof Opasiak #include <linux/usb/ch9.h>
157b3f74f7SKrzysztof Opasiak
167b3f74f7SKrzysztof Opasiak #include <unistd.h>
177b3f74f7SKrzysztof Opasiak
187b3f74f7SKrzysztof Opasiak #include "usbip_host_common.h"
197b3f74f7SKrzysztof Opasiak #include "usbip_device_driver.h"
207b3f74f7SKrzysztof Opasiak
217b3f74f7SKrzysztof Opasiak #undef PROGNAME
227b3f74f7SKrzysztof Opasiak #define PROGNAME "libusbip"
237b3f74f7SKrzysztof Opasiak
247b3f74f7SKrzysztof Opasiak #define copy_descr_attr16(dev, descr, attr) \
257b3f74f7SKrzysztof Opasiak ((dev)->attr = le16toh((descr)->attr)) \
267b3f74f7SKrzysztof Opasiak
277b3f74f7SKrzysztof Opasiak #define copy_descr_attr(dev, descr, attr) \
287b3f74f7SKrzysztof Opasiak ((dev)->attr = (descr)->attr) \
297b3f74f7SKrzysztof Opasiak
307b3f74f7SKrzysztof Opasiak #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
317b3f74f7SKrzysztof Opasiak
327b3f74f7SKrzysztof Opasiak static struct {
337b3f74f7SKrzysztof Opasiak enum usb_device_speed speed;
347b3f74f7SKrzysztof Opasiak const char *name;
357b3f74f7SKrzysztof Opasiak } speed_names[] = {
367b3f74f7SKrzysztof Opasiak {
377b3f74f7SKrzysztof Opasiak .speed = USB_SPEED_UNKNOWN,
387b3f74f7SKrzysztof Opasiak .name = "UNKNOWN",
397b3f74f7SKrzysztof Opasiak },
407b3f74f7SKrzysztof Opasiak {
417b3f74f7SKrzysztof Opasiak .speed = USB_SPEED_LOW,
427b3f74f7SKrzysztof Opasiak .name = "low-speed",
437b3f74f7SKrzysztof Opasiak },
447b3f74f7SKrzysztof Opasiak {
457b3f74f7SKrzysztof Opasiak .speed = USB_SPEED_FULL,
467b3f74f7SKrzysztof Opasiak .name = "full-speed",
477b3f74f7SKrzysztof Opasiak },
487b3f74f7SKrzysztof Opasiak {
497b3f74f7SKrzysztof Opasiak .speed = USB_SPEED_HIGH,
507b3f74f7SKrzysztof Opasiak .name = "high-speed",
517b3f74f7SKrzysztof Opasiak },
527b3f74f7SKrzysztof Opasiak {
537b3f74f7SKrzysztof Opasiak .speed = USB_SPEED_WIRELESS,
547b3f74f7SKrzysztof Opasiak .name = "wireless",
557b3f74f7SKrzysztof Opasiak },
567b3f74f7SKrzysztof Opasiak {
577b3f74f7SKrzysztof Opasiak .speed = USB_SPEED_SUPER,
587b3f74f7SKrzysztof Opasiak .name = "super-speed",
597b3f74f7SKrzysztof Opasiak },
607b3f74f7SKrzysztof Opasiak };
617b3f74f7SKrzysztof Opasiak
627b3f74f7SKrzysztof Opasiak static
read_usb_vudc_device(struct udev_device * sdev,struct usbip_usb_device * dev)637b3f74f7SKrzysztof Opasiak int read_usb_vudc_device(struct udev_device *sdev, struct usbip_usb_device *dev)
647b3f74f7SKrzysztof Opasiak {
657b3f74f7SKrzysztof Opasiak const char *path, *name;
667b3f74f7SKrzysztof Opasiak char filepath[SYSFS_PATH_MAX];
677b3f74f7SKrzysztof Opasiak struct usb_device_descriptor descr;
685c65a2fdSElad Wexler unsigned int i;
697b3f74f7SKrzysztof Opasiak FILE *fd = NULL;
707b3f74f7SKrzysztof Opasiak struct udev_device *plat;
717b3f74f7SKrzysztof Opasiak const char *speed;
72*28df0642SGwanYeong Kim size_t ret;
737b3f74f7SKrzysztof Opasiak
747b3f74f7SKrzysztof Opasiak plat = udev_device_get_parent(sdev);
757b3f74f7SKrzysztof Opasiak path = udev_device_get_syspath(plat);
767b3f74f7SKrzysztof Opasiak snprintf(filepath, SYSFS_PATH_MAX, "%s/%s",
777b3f74f7SKrzysztof Opasiak path, VUDC_DEVICE_DESCR_FILE);
787b3f74f7SKrzysztof Opasiak fd = fopen(filepath, "r");
797b3f74f7SKrzysztof Opasiak if (!fd)
807b3f74f7SKrzysztof Opasiak return -1;
817b3f74f7SKrzysztof Opasiak ret = fread((char *) &descr, sizeof(descr), 1, fd);
82*28df0642SGwanYeong Kim if (ret != 1) {
83*28df0642SGwanYeong Kim err("Cannot read vudc device descr file: %s", strerror(errno));
84f7a5d7b3SElad Wexler goto err;
85*28df0642SGwanYeong Kim }
867b3f74f7SKrzysztof Opasiak fclose(fd);
877b3f74f7SKrzysztof Opasiak
887b3f74f7SKrzysztof Opasiak copy_descr_attr(dev, &descr, bDeviceClass);
897b3f74f7SKrzysztof Opasiak copy_descr_attr(dev, &descr, bDeviceSubClass);
907b3f74f7SKrzysztof Opasiak copy_descr_attr(dev, &descr, bDeviceProtocol);
917b3f74f7SKrzysztof Opasiak copy_descr_attr(dev, &descr, bNumConfigurations);
927b3f74f7SKrzysztof Opasiak copy_descr_attr16(dev, &descr, idVendor);
937b3f74f7SKrzysztof Opasiak copy_descr_attr16(dev, &descr, idProduct);
947b3f74f7SKrzysztof Opasiak copy_descr_attr16(dev, &descr, bcdDevice);
957b3f74f7SKrzysztof Opasiak
966389a62fSLiu, Changcheng strncpy(dev->path, path, SYSFS_PATH_MAX - 1);
976389a62fSLiu, Changcheng dev->path[SYSFS_PATH_MAX - 1] = '\0';
987b3f74f7SKrzysztof Opasiak
997b3f74f7SKrzysztof Opasiak dev->speed = USB_SPEED_UNKNOWN;
1007b3f74f7SKrzysztof Opasiak speed = udev_device_get_sysattr_value(sdev, "current_speed");
1017b3f74f7SKrzysztof Opasiak if (speed) {
1027b3f74f7SKrzysztof Opasiak for (i = 0; i < ARRAY_SIZE(speed_names); i++) {
1037b3f74f7SKrzysztof Opasiak if (!strcmp(speed_names[i].name, speed)) {
1047b3f74f7SKrzysztof Opasiak dev->speed = speed_names[i].speed;
1057b3f74f7SKrzysztof Opasiak break;
1067b3f74f7SKrzysztof Opasiak }
1077b3f74f7SKrzysztof Opasiak }
1087b3f74f7SKrzysztof Opasiak }
1097b3f74f7SKrzysztof Opasiak
1107b3f74f7SKrzysztof Opasiak /* Only used for user output, little sense to output them in general */
1117b3f74f7SKrzysztof Opasiak dev->bNumInterfaces = 0;
1127b3f74f7SKrzysztof Opasiak dev->bConfigurationValue = 0;
1137b3f74f7SKrzysztof Opasiak dev->busnum = 0;
1147b3f74f7SKrzysztof Opasiak
1157b3f74f7SKrzysztof Opasiak name = udev_device_get_sysname(plat);
1166389a62fSLiu, Changcheng strncpy(dev->busid, name, SYSFS_BUS_ID_SIZE - 1);
1176389a62fSLiu, Changcheng dev->busid[SYSFS_BUS_ID_SIZE - 1] = '\0';
1187b3f74f7SKrzysztof Opasiak return 0;
119f7a5d7b3SElad Wexler err:
120f7a5d7b3SElad Wexler fclose(fd);
121f7a5d7b3SElad Wexler return -1;
1227b3f74f7SKrzysztof Opasiak }
1237b3f74f7SKrzysztof Opasiak
is_my_device(struct udev_device * dev)1247b3f74f7SKrzysztof Opasiak static int is_my_device(struct udev_device *dev)
1257b3f74f7SKrzysztof Opasiak {
1267b3f74f7SKrzysztof Opasiak const char *driver;
1277b3f74f7SKrzysztof Opasiak
1287b3f74f7SKrzysztof Opasiak driver = udev_device_get_property_value(dev, "USB_UDC_NAME");
1297b3f74f7SKrzysztof Opasiak return driver != NULL && !strcmp(driver, USBIP_DEVICE_DRV_NAME);
1307b3f74f7SKrzysztof Opasiak }
1317b3f74f7SKrzysztof Opasiak
usbip_device_driver_open(struct usbip_host_driver * hdriver)1327b3f74f7SKrzysztof Opasiak static int usbip_device_driver_open(struct usbip_host_driver *hdriver)
1337b3f74f7SKrzysztof Opasiak {
1347b3f74f7SKrzysztof Opasiak int ret;
1357b3f74f7SKrzysztof Opasiak
1367b3f74f7SKrzysztof Opasiak hdriver->ndevs = 0;
1377b3f74f7SKrzysztof Opasiak INIT_LIST_HEAD(&hdriver->edev_list);
1387b3f74f7SKrzysztof Opasiak
1397b3f74f7SKrzysztof Opasiak ret = usbip_generic_driver_open(hdriver);
1407b3f74f7SKrzysztof Opasiak if (ret)
1417b3f74f7SKrzysztof Opasiak err("please load " USBIP_CORE_MOD_NAME ".ko and "
1427b3f74f7SKrzysztof Opasiak USBIP_DEVICE_DRV_NAME ".ko!");
1437b3f74f7SKrzysztof Opasiak
1447b3f74f7SKrzysztof Opasiak return ret;
1457b3f74f7SKrzysztof Opasiak }
1467b3f74f7SKrzysztof Opasiak
1477b3f74f7SKrzysztof Opasiak struct usbip_host_driver device_driver = {
1487b3f74f7SKrzysztof Opasiak .edev_list = LIST_HEAD_INIT(device_driver.edev_list),
1497b3f74f7SKrzysztof Opasiak .udev_subsystem = "udc",
1507b3f74f7SKrzysztof Opasiak .ops = {
1517b3f74f7SKrzysztof Opasiak .open = usbip_device_driver_open,
1527b3f74f7SKrzysztof Opasiak .close = usbip_generic_driver_close,
1537b3f74f7SKrzysztof Opasiak .refresh_device_list = usbip_generic_refresh_device_list,
1547b3f74f7SKrzysztof Opasiak .get_device = usbip_generic_get_device,
1557b3f74f7SKrzysztof Opasiak .read_device = read_usb_vudc_device,
1567b3f74f7SKrzysztof Opasiak .is_my_device = is_my_device,
1577b3f74f7SKrzysztof Opasiak },
1587b3f74f7SKrzysztof Opasiak };
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