usbhost.c revision 6ac3aa157493ef24bc837b679dd8292fad8961e0
130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood/* 230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * Copyright (C) 2010 The Android Open Source Project 330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * 430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * Licensed under the Apache License, Version 2.0 (the "License"); 530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * you may not use this file except in compliance with the License. 630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * You may obtain a copy of the License at 730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * 830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * http://www.apache.org/licenses/LICENSE-2.0 930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * 1030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * Unless required by applicable law or agreed to in writing, software 1130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * distributed under the License is distributed on an "AS IS" BASIS, 1230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * See the License for the specific language governing permissions and 1430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood * limitations under the License. 1530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood */ 1630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 1730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <stdio.h> 1830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <stdlib.h> 1930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <unistd.h> 2030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <string.h> 2130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 2230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <sys/ioctl.h> 2330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <sys/types.h> 2430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <sys/time.h> 2530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <sys/inotify.h> 2630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <dirent.h> 2730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <fcntl.h> 2830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <errno.h> 2930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <ctype.h> 3030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <pthread.h> 3130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 3230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <linux/usbdevice_fs.h> 3330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <linux/version.h> 3430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 20) 3530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <linux/usb/ch9.h> 3630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#else 3730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <linux/usb_ch9.h> 3830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#endif 3930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <asm/byteorder.h> 4030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 4130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include "usbhost/usbhost.h" 4230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 4330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#define USB_FS_DIR "/dev/bus/usb" 4430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 4530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#if 0 4630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#define D printf 4730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#else 4830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#define D(...) 4930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#endif 5030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 516ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwoodstruct usb_host_context { 526ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood usb_device_added_cb added_cb; 536ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood usb_device_removed_cb removed_cb; 546ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood void *client_data; 556ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood}; 566ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood 5730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodstruct usb_device { 5830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood char dev_name[64]; 5930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood unsigned char desc[256]; 6030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int desc_length; 6130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int fd; 6230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int writeable; 6330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood}; 6430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 6530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodstruct usb_endpoint 6630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 6730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device *dev; 6830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_endpoint_descriptor desc; 6930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usbdevfs_urb urb; 7030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood}; 7130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 7230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodstatic inline int badname(const char *name) 7330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 7430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood while(*name) { 7530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if(!isdigit(*name++)) return 1; 7630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 7730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return 0; 7830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 7930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 806ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwoodstatic void find_existing_devices(struct usb_host_context *context) 8130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 8230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood char busname[32], devname[32]; 8330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood DIR *busdir , *devdir ; 8430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct dirent *de; 8530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 8630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood busdir = opendir(USB_FS_DIR); 8730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if(busdir == 0) return; 8830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 8930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood while((de = readdir(busdir)) != 0) { 9030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if(badname(de->d_name)) continue; 9130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 9230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood snprintf(busname, sizeof busname, "%s/%s", USB_FS_DIR, de->d_name); 9330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood devdir = opendir(busname); 9430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if(devdir == 0) continue; 9530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 9630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood while((de = readdir(devdir))) { 9730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if(badname(de->d_name)) continue; 9830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 9930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood snprintf(devname, sizeof devname, "%s/%s", busname, de->d_name); 1006ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood context->added_cb(devname, context->client_data); 10130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } // end of devdir while 10230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood closedir(devdir); 10330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } //end of busdir while 10430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood closedir(busdir); 10530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 10630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 1076ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwoodstatic void* device_discovery_thread(void *client_data) 10830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 1096ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood struct usb_host_context *context = (struct usb_host_context *)client_data; 11030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct inotify_event* event; 11130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood char event_buf[512]; 11230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood char path[100]; 11330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int i, fd, ret; 11430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int wd, wds[10]; 11530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int wd_count = sizeof(wds) / sizeof(wds[0]); 11630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 11730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("Created device discovery thread\n"); 11830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 11930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood fd = inotify_init(); 12030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (fd < 0) { 12130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood fprintf(stderr, "inotify_init failed\n"); 12230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 12330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 12430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 12530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* watch for files added and deleted within USB_FS_DIR */ 12630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood memset(wds, 0, sizeof(wds)); 12730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* watch the root for new subdirectories */ 12830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood wds[0] = inotify_add_watch(fd, USB_FS_DIR, IN_CREATE | IN_DELETE); 12930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (wds[0] < 0) { 13030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood fprintf(stderr, "inotify_add_watch failed\n"); 13130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 13230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 13330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 13430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* watch existing subdirectories of USB_FS_DIR */ 13530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood for (i = 1; i < wd_count; i++) { 13630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood snprintf(path, sizeof(path), "%s/%03d", USB_FS_DIR, i); 13730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood ret = inotify_add_watch(fd, path, IN_CREATE | IN_DELETE); 13830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (ret > 0) 13930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood wds[i] = ret; 14030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 14130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 14230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* check for existing devices first, after we have inotify set up */ 1436ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood find_existing_devices(context); 14430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 14530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood while (1) { 14630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood ret = read(fd, event_buf, sizeof(event_buf)); 14730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (ret >= (int)sizeof(struct inotify_event)) { 14830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood event = (struct inotify_event *)event_buf; 14930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood wd = event->wd; 15030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (wd == wds[0]) { 15130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood i = atoi(event->name); 15230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood snprintf(path, sizeof(path), "%s/%s", USB_FS_DIR, event->name); 15330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("new subdirectory %s: index: %d\n", path, i); 15430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (i > 0 && i < wd_count) { 15530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood ret = inotify_add_watch(fd, path, IN_CREATE | IN_DELETE); 15630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (ret > 0) 15730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood wds[i] = ret; 15830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 15930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } else { 16030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood for (i = 1; i < wd_count; i++) { 16130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (wd == wds[i]) { 16230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood snprintf(path, sizeof(path), "%s/%03d/%s", USB_FS_DIR, i, event->name); 16330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (event->mask == IN_CREATE) { 16430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("new device %s\n", path); 1656ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood context->added_cb(path, context->client_data); 16630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } else if (event->mask == IN_DELETE) { 16730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("gone device %s\n", path); 1686ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood context->removed_cb(path, context->client_data); 16930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 17030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 17130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 17230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 17330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 17430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 17530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 17630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 17730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 1786ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwoodint usb_host_init(usb_device_added_cb added_cb, usb_device_removed_cb removed_cb, void *client_data) 17930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 1806ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood struct usb_host_context *context; 18130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood pthread_t tid; 1826ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood pthread_attr_t attr; 18330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 1846ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood if (!added_cb || !removed_cb) 1856ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood return -EINVAL; 18630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 1876ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood context = calloc(1, sizeof(struct usb_host_context)); 1886ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood context->added_cb = added_cb; 1896ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood context->removed_cb = removed_cb; 1906ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood context->client_data = client_data; 19130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 1926ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood pthread_attr_init(&attr); 1936ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); 1946ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood return pthread_create(&tid, &attr, device_discovery_thread, context); 19530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 19630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 19730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodstruct usb_device *usb_device_open(const char *dev_name) 19830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 19930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device *device = calloc(1, sizeof(struct usb_device)); 20030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int fd, length, did_retry = 0; 20130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 20230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood strcpy(device->dev_name, dev_name); 20330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood device->writeable = 1; 20430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 20530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodretry: 20630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood fd = open(dev_name, O_RDWR); 20730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (fd < 0) { 20830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* if we fail, see if have read-only access */ 20930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood fd = open(dev_name, O_RDONLY); 21030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (fd < 0 && errno == EACCES && !did_retry) { 21130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* work around race condition between inotify and permissions management */ 21230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood sleep(1); 21330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood did_retry = 1; 21430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood goto retry; 21530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 21630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 21730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (fd < 0) goto fail; 21830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood device->writeable = 0; 21930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("[ usb open read-only %s fd = %d]\n", dev_name, fd); 22030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 22130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 22230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood length = read(fd, device->desc, sizeof(device->desc)); 22330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (length < 0) 22430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood goto fail; 22530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 22630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood device->fd = fd; 22730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood device->desc_length = length; 22830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return device; 22930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodfail: 23030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood close(fd); 23130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood free(device); 23230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 23330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 23430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 23530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodvoid usb_device_close(struct usb_device *device) 23630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 23730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood close(device->fd); 23830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood free(device); 23930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 24030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 24130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodconst char* usb_device_get_name(struct usb_device *device) 24230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 24330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return device->dev_name; 24430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 24530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 24630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwooduint16_t usb_device_get_vendor_id(struct usb_device *device) 24730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 24830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device_descriptor* desc = (struct usb_device_descriptor*)device->desc; 24930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return __le16_to_cpu(desc->idVendor); 25030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 25130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 25230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwooduint16_t usb_device_get_product_id(struct usb_device *device) 25330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 25430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device_descriptor* desc = (struct usb_device_descriptor*)device->desc; 25530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return __le16_to_cpu(desc->idProduct); 25630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 25730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 25830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodchar* usb_device_get_string(struct usb_device *device, int id) 25930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 26030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood char string[256]; 26130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usbdevfs_ctrltransfer ctrl; 26230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood __u16 buffer[128]; 26330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood __u16 languages[128]; 26430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int i, result; 26530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int languageCount = 0; 26630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 26730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood string[0] = 0; 26830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 26930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood // reading the string requires read/write permission 27030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (!device->writeable) { 27130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int fd = open(device->dev_name, O_RDWR); 27230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (fd > 0) { 27330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood close(device->fd); 27430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood device->fd = fd; 27530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood device->writeable = 1; 27630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } else { 27730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 27830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 27930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 28030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 28130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood memset(languages, 0, sizeof(languages)); 28230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood memset(&ctrl, 0, sizeof(ctrl)); 28330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 28430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood // read list of supported languages 28530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood ctrl.bRequestType = USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE; 28630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood ctrl.bRequest = USB_REQ_GET_DESCRIPTOR; 28730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood ctrl.wValue = (USB_DT_STRING << 8) | 0; 28830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood ctrl.wIndex = 0; 28930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood ctrl.wLength = sizeof(languages); 29030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood ctrl.data = languages; 29130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 29230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood result = ioctl(device->fd, USBDEVFS_CONTROL, &ctrl); 29330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (result > 0) 29430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood languageCount = (result - 2) / 2; 29530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 29630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood for (i = 1; i <= languageCount; i++) { 29730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood memset(buffer, 0, sizeof(buffer)); 29830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood memset(&ctrl, 0, sizeof(ctrl)); 29930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 30030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood ctrl.bRequestType = USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE; 30130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood ctrl.bRequest = USB_REQ_GET_DESCRIPTOR; 30230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood ctrl.wValue = (USB_DT_STRING << 8) | id; 30330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood ctrl.wIndex = languages[i]; 30430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood ctrl.wLength = sizeof(buffer); 30530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood ctrl.data = buffer; 30630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 30730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood result = ioctl(device->fd, USBDEVFS_CONTROL, &ctrl); 30830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (result > 0) { 30930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int i; 31030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood // skip first word, and copy the rest to the string, changing shorts to bytes. 31130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood result /= 2; 31230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood for (i = 1; i < result; i++) 31330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood string[i - 1] = buffer[i]; 31430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood string[i - 1] = 0; 31530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return strdup(string); 31630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 31730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 31830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 31930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 32030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 32130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 32230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodchar* usb_device_get_manufacturer_name(struct usb_device *device) 32330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 32430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device_descriptor *desc = (struct usb_device_descriptor *)device->desc; 32530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 32630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (desc->iManufacturer) 32730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return usb_device_get_string(device, desc->iManufacturer); 32830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood else 32930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 33030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 33130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 33230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodchar* usb_device_get_product_name(struct usb_device *device) 33330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 33430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device_descriptor *desc = (struct usb_device_descriptor *)device->desc; 33530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 33630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (desc->iProduct) 33730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return usb_device_get_string(device, desc->iProduct); 33830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood else 33930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 34030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 34130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 34230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodchar* usb_device_get_serial(struct usb_device *device) 34330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 34430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device_descriptor *desc = (struct usb_device_descriptor *)device->desc; 34530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 34630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (desc->iSerialNumber) 34730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return usb_device_get_string(device, desc->iSerialNumber); 34830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood else 34930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 35030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 35130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 35230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_device_is_writeable(struct usb_device *device) 35330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 35430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return device->writeable; 35530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 35630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 35730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodvoid usb_descriptor_iter_init(struct usb_device *device, struct usb_descriptor_iter *iter) 35830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 35930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood iter->config = device->desc; 36030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood iter->config_end = device->desc + device->desc_length; 36130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood iter->curr_desc = device->desc; 36230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 36330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 36430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodstruct usb_descriptor_header *usb_descriptor_iter_next(struct usb_descriptor_iter *iter) 36530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 36630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_descriptor_header* next; 36730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (iter->curr_desc >= iter->config_end) 36830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 36930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood next = (struct usb_descriptor_header*)iter->curr_desc; 37030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood iter->curr_desc += next->bLength; 37130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return next; 37230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 37330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 37430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_device_claim_interface(struct usb_device *device, unsigned int interface) 37530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 37630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return ioctl(device->fd, USBDEVFS_CLAIMINTERFACE, &interface); 37730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 37830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 37930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_device_release_interface(struct usb_device *device, unsigned int interface) 38030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 38130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return ioctl(device->fd, USBDEVFS_RELEASEINTERFACE, &interface); 38230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 38330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 38430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodstruct usb_endpoint *usb_endpoint_open(struct usb_device *dev, 38530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood const struct usb_endpoint_descriptor *desc) 38630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 38730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_endpoint *ep = calloc(1, sizeof(struct usb_endpoint)); 38830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood memcpy(&ep->desc, desc, sizeof(ep->desc)); 38930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood ep->dev = dev; 39030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return ep; 39130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 39230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 39330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodvoid usb_endpoint_close(struct usb_endpoint *ep) 39430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 39530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood // cancel IO here? 39630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood free(ep); 39730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 39830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 39930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_endpoint_queue(struct usb_endpoint *ep, void *data, int len) 40030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 40130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usbdevfs_urb *urb = &ep->urb; 40230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int res; 40330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 40430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("usb_endpoint_queue\n"); 40530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood memset(urb, 0, sizeof(*urb)); 40630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood urb->type = USBDEVFS_URB_TYPE_BULK; 40730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood urb->endpoint = ep->desc.bEndpointAddress; 40830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood urb->status = -1; 40930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood urb->buffer = data; 41030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood urb->buffer_length = len; 41130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 41230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood do { 41330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood res = ioctl(ep->dev->fd, USBDEVFS_SUBMITURB, urb); 41430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } while((res < 0) && (errno == EINTR)); 41530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 41630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return res; 41730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 41830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 41930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_endpoint_wait(struct usb_device *dev, int *out_ep_num) 42030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 42130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usbdevfs_urb *out = NULL; 42230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int res; 42330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 42430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood while (1) { 42530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood res = ioctl(dev->fd, USBDEVFS_REAPURB, &out); 42630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("USBDEVFS_REAPURB returned %d\n", res); 42730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (res < 0) { 42830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if(errno == EINTR) { 42930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood continue; 43030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 43130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("[ reap urb - error ]\n"); 43230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood *out_ep_num = -1; 43330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } else { 43430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("[ urb @%p status = %d, actual = %d ]\n", 43530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood out, out->status, out->actual_length); 43630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood res = out->actual_length; 43730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood *out_ep_num = out->endpoint; 43830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 43930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood break; 44030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 44130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return res; 44230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 44330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 44430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_endpoint_cancel(struct usb_endpoint *ep) 44530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 44630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return ioctl(ep->dev->fd, USBDEVFS_DISCARDURB, &ep->urb); 44730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 44830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 4495e567cb34b5e54467f501fc9703db82ca6639ff3Mike Lockwoodstruct usb_device *usb_endpoint_get_device(struct usb_endpoint *ep) 4505e567cb34b5e54467f501fc9703db82ca6639ff3Mike Lockwood{ 4515e567cb34b5e54467f501fc9703db82ca6639ff3Mike Lockwood return ep->dev; 4525e567cb34b5e54467f501fc9703db82ca6639ff3Mike Lockwood} 4535e567cb34b5e54467f501fc9703db82ca6639ff3Mike Lockwood 45430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_endpoint_number(struct usb_endpoint *ep) 45530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 45630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return ep->desc.bEndpointAddress; 45730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 45830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 45930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_endpoint_max_packet(struct usb_endpoint *ep) 46030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 46130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return __le16_to_cpu(ep->desc.wMaxPacketSize); 46230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 46330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 464