usbhost.c revision cd185f23cc6f062b252d1d19bca55e721290ee62
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 17e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood// #define DEBUG 1 18e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood#if DEBUG 19e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood 20e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood#ifdef USE_LIBLOG 21e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood#define LOG_TAG "usbhost" 22e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood#include "utils/Log.h" 23e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood#define D LOGD 24e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood#else 25e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood#define D printf 26e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood#endif 27e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood 28e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood#else 29e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood#define D(...) 30e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood#endif 31e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood 3230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <stdio.h> 3330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <stdlib.h> 3430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <unistd.h> 3530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <string.h> 3630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 3730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <sys/ioctl.h> 3830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <sys/types.h> 3930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <sys/time.h> 4030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <sys/inotify.h> 4130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <dirent.h> 4230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <fcntl.h> 4330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <errno.h> 4430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <ctype.h> 4530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <pthread.h> 4630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 4730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <linux/usbdevice_fs.h> 4830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <linux/version.h> 4930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 20) 5030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <linux/usb/ch9.h> 5130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#else 5230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <linux/usb_ch9.h> 5330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#endif 5430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <asm/byteorder.h> 5530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 5630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include "usbhost/usbhost.h" 5730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 5830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#define USB_FS_DIR "/dev/bus/usb" 59203f102028c4df33c191d8cd610775eba8d5366dMike Lockwood#define USB_FS_ID_SCANNER "/dev/bus/usb/%d/%d" 6030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 6130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 626ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwoodstruct usb_host_context { 637a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood int fd; 646ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood}; 656ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood 6630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodstruct usb_device { 6730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood char dev_name[64]; 6830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood unsigned char desc[256]; 6930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int desc_length; 7030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int fd; 7130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int writeable; 7230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood}; 7330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 7430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodstruct usb_endpoint 7530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 7630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device *dev; 7730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_endpoint_descriptor desc; 7830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usbdevfs_urb urb; 7930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood}; 8030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 8130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodstatic inline int badname(const char *name) 8230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 8330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood while(*name) { 8430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if(!isdigit(*name++)) return 1; 8530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 8630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return 0; 8730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 8830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 897a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood/* returns true if one of the callbacks indicates we are done */ 907a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwoodstatic int find_existing_devices(usb_device_added_cb added_cb, 917a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood usb_device_removed_cb removed_cb, 927a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood void *client_data) 9330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 9430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood char busname[32], devname[32]; 9530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood DIR *busdir , *devdir ; 9630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct dirent *de; 977a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood int done = 0; 9830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 9930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood busdir = opendir(USB_FS_DIR); 1007a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood if(busdir == 0) return 1; 10130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 1027a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood while ((de = readdir(busdir)) != 0 && !done) { 10330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if(badname(de->d_name)) continue; 10430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 10530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood snprintf(busname, sizeof busname, "%s/%s", USB_FS_DIR, de->d_name); 10630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood devdir = opendir(busname); 10730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if(devdir == 0) continue; 10830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 1097a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood while ((de = readdir(devdir)) && !done) { 11030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if(badname(de->d_name)) continue; 11130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 11230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood snprintf(devname, sizeof devname, "%s/%s", busname, de->d_name); 1137a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood done = added_cb(devname, client_data); 11430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } // end of devdir while 11530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood closedir(devdir); 11630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } //end of busdir while 11730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood closedir(busdir); 1187a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood 1197a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood return done; 1207a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood} 1217a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood 1227a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwoodstruct usb_host_context *usb_host_init() 1237a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood{ 1247a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood struct usb_host_context *context = calloc(1, sizeof(struct usb_host_context)); 1257a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood if (!context) { 1267a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood fprintf(stderr, "out of memory in usb_host_context\n"); 1277a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood return NULL; 1287a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood } 1297a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood context->fd = inotify_init(); 1307a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood if (context->fd < 0) { 1317a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood fprintf(stderr, "inotify_init failed\n"); 1327a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood free(context); 1337a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood return NULL; 1347a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood } 1357a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood return context; 1367a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood} 1377a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood 1387a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwoodvoid usb_host_cleanup(struct usb_host_context *context) 1397a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood{ 1407a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood close(context->fd); 1417a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood free(context); 14230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 14330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 1447a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwoodvoid usb_host_run(struct usb_host_context *context, 1457a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood usb_device_added_cb added_cb, 1467a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood usb_device_removed_cb removed_cb, 147a805519ceedc53afa5453a6d8a7d80038d885d9fMike Lockwood usb_discovery_done_cb discovery_done_cb, 1487a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood void *client_data) 14930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 15030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct inotify_event* event; 15130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood char event_buf[512]; 15230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood char path[100]; 1537a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood int i, ret, done = 0; 15430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int wd, wds[10]; 15530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int wd_count = sizeof(wds) / sizeof(wds[0]); 15630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 15730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("Created device discovery thread\n"); 15830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 15930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* watch for files added and deleted within USB_FS_DIR */ 16030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood memset(wds, 0, sizeof(wds)); 16130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* watch the root for new subdirectories */ 1627a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood wds[0] = inotify_add_watch(context->fd, USB_FS_DIR, IN_CREATE | IN_DELETE); 16330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (wds[0] < 0) { 16430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood fprintf(stderr, "inotify_add_watch failed\n"); 165e8849d190a3097274dcb64416e564538a1017054Mike Lockwood if (discovery_done_cb) 166e8849d190a3097274dcb64416e564538a1017054Mike Lockwood discovery_done_cb(client_data); 1677a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood return; 16830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 16930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 17030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* watch existing subdirectories of USB_FS_DIR */ 17130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood for (i = 1; i < wd_count; i++) { 17230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood snprintf(path, sizeof(path), "%s/%03d", USB_FS_DIR, i); 1737a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood ret = inotify_add_watch(context->fd, path, IN_CREATE | IN_DELETE); 17430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (ret > 0) 17530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood wds[i] = ret; 17630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 17730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 17830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* check for existing devices first, after we have inotify set up */ 1797a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood done = find_existing_devices(added_cb, removed_cb, client_data); 180a805519ceedc53afa5453a6d8a7d80038d885d9fMike Lockwood if (discovery_done_cb) 181a805519ceedc53afa5453a6d8a7d80038d885d9fMike Lockwood done |= discovery_done_cb(client_data); 18230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 1837a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood while (!done) { 1847a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood ret = read(context->fd, event_buf, sizeof(event_buf)); 18530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (ret >= (int)sizeof(struct inotify_event)) { 18630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood event = (struct inotify_event *)event_buf; 18730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood wd = event->wd; 18830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (wd == wds[0]) { 18930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood i = atoi(event->name); 19030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood snprintf(path, sizeof(path), "%s/%s", USB_FS_DIR, event->name); 19130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("new subdirectory %s: index: %d\n", path, i); 19230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (i > 0 && i < wd_count) { 1937a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood ret = inotify_add_watch(context->fd, path, IN_CREATE | IN_DELETE); 19430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (ret > 0) 19530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood wds[i] = ret; 19630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 19730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } else { 1987a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood for (i = 1; i < wd_count && !done; i++) { 19930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (wd == wds[i]) { 20030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood snprintf(path, sizeof(path), "%s/%03d/%s", USB_FS_DIR, i, event->name); 20130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (event->mask == IN_CREATE) { 20230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("new device %s\n", path); 2037a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood done = added_cb(path, client_data); 20430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } else if (event->mask == IN_DELETE) { 20530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("gone device %s\n", path); 2067a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood done = removed_cb(path, client_data); 20730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 20830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 20930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 21030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 21130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 21230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 21330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 21430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 21530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodstruct usb_device *usb_device_open(const char *dev_name) 21630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 217cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood int fd, did_retry = 0, writeable = 1; 21830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 21930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodretry: 22030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood fd = open(dev_name, O_RDWR); 22130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (fd < 0) { 22230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* if we fail, see if have read-only access */ 22330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood fd = open(dev_name, O_RDONLY); 224e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood D("usb_device_open open returned %d errno %d\n", fd, errno); 225e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood if (fd < 0 && (errno == EACCES || errno == ENOENT) && !did_retry) { 22630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* work around race condition between inotify and permissions management */ 22730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood sleep(1); 22830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood did_retry = 1; 22930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood goto retry; 23030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 23130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 232cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood if (fd < 0) 233cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return NULL; 234cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood writeable = 0; 23530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("[ usb open read-only %s fd = %d]\n", dev_name, fd); 23630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 23730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 238cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood struct usb_device* result = usb_device_new(dev_name, fd); 239cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood if (result) 240cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood result->writeable = writeable; 241cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return result; 242cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood} 243cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood 244cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwoodvoid usb_device_close(struct usb_device *device) 245cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood{ 246cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood close(device->fd); 247cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood free(device); 248cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood} 249cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood 250cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwoodstruct usb_device *usb_device_new(const char *dev_name, int fd) 251cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood{ 252cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood struct usb_device *device = calloc(1, sizeof(struct usb_device)); 253cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood int length; 254cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood 255cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood if (lseek(fd, 0, SEEK_SET) != 0) 256cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood goto failed; 25730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood length = read(fd, device->desc, sizeof(device->desc)); 258cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood D("usb_device_new read returned %d errno %d\n", fd, errno); 25930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (length < 0) 260cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood goto failed; 26130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 26230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood device->fd = fd; 26330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood device->desc_length = length; 264cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood // assume we are writeable, since usb_device_get_fd will only return writeable fds 265cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood device->writeable = 1; 26630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return device; 267cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood 268cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwoodfailed: 26930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood close(fd); 27030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood free(device); 27130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 27230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 27330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 274cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwoodstatic int usb_device_reopen_writeable(struct usb_device *device) 27530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 276cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood if (device->writeable) 277cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return 1; 278cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood 279cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood int fd = open(device->dev_name, O_RDWR); 280cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood if (fd >= 0) { 281cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood close(device->fd); 282cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood device->fd = fd; 283cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood device->writeable = 1; 284cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return 1; 285cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood } 286cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood D("usb_device_reopen_writeable failed errno %d\n", errno); 287cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return 0; 288cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood} 289cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood 290cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwoodint usb_device_get_fd(struct usb_device *device) 291cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood{ 292cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood if (!usb_device_reopen_writeable(device)) 293cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return -1; 294cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return device->fd; 29530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 29630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 29730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodconst char* usb_device_get_name(struct usb_device *device) 29830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 29930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return device->dev_name; 30030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 30130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 302203f102028c4df33c191d8cd610775eba8d5366dMike Lockwoodint usb_device_get_unique_id(struct usb_device *device) 303203f102028c4df33c191d8cd610775eba8d5366dMike Lockwood{ 304203f102028c4df33c191d8cd610775eba8d5366dMike Lockwood int bus = 0, dev = 0; 305203f102028c4df33c191d8cd610775eba8d5366dMike Lockwood sscanf(device->dev_name, USB_FS_ID_SCANNER, &bus, &dev); 306203f102028c4df33c191d8cd610775eba8d5366dMike Lockwood return bus * 1000 + dev; 307203f102028c4df33c191d8cd610775eba8d5366dMike Lockwood} 308203f102028c4df33c191d8cd610775eba8d5366dMike Lockwood 30907eb4af174f31c449a86dd459e2c81702f74acf1Mike Lockwoodint usb_device_get_unique_id_from_name(const char* name) 31007eb4af174f31c449a86dd459e2c81702f74acf1Mike Lockwood{ 31107eb4af174f31c449a86dd459e2c81702f74acf1Mike Lockwood int bus = 0, dev = 0; 31207eb4af174f31c449a86dd459e2c81702f74acf1Mike Lockwood sscanf(name, USB_FS_ID_SCANNER, &bus, &dev); 31307eb4af174f31c449a86dd459e2c81702f74acf1Mike Lockwood return bus * 1000 + dev; 31407eb4af174f31c449a86dd459e2c81702f74acf1Mike Lockwood} 31507eb4af174f31c449a86dd459e2c81702f74acf1Mike Lockwood 31630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwooduint16_t usb_device_get_vendor_id(struct usb_device *device) 31730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 31830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device_descriptor* desc = (struct usb_device_descriptor*)device->desc; 31930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return __le16_to_cpu(desc->idVendor); 32030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 32130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 32230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwooduint16_t usb_device_get_product_id(struct usb_device *device) 32330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 32430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device_descriptor* desc = (struct usb_device_descriptor*)device->desc; 32530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return __le16_to_cpu(desc->idProduct); 32630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 32730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 3281b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwoodint usb_device_send_control(struct usb_device *device, 3291b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood int requestType, 3301b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood int request, 3311b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood int value, 3321b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood int index, 3331b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood int length, 3341b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood void* buffer) 33530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 33630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usbdevfs_ctrltransfer ctrl; 33730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 3381b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood // this usually requires read/write permission 339cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood if (!usb_device_reopen_writeable(device)) 340cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return -1; 34130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 34230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood memset(&ctrl, 0, sizeof(ctrl)); 3431b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood ctrl.bRequestType = requestType; 3441b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood ctrl.bRequest = request; 3451b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood ctrl.wValue = value; 3461b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood ctrl.wIndex = index; 3471b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood ctrl.wLength = length; 3481b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood ctrl.data = buffer; 3491b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood return ioctl(device->fd, USBDEVFS_CONTROL, &ctrl); 3501b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood} 3511b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood 3521b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwoodchar* usb_device_get_string(struct usb_device *device, int id) 3531b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood{ 3541b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood char string[256]; 3551b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood __u16 buffer[128]; 3561b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood __u16 languages[128]; 3571b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood int i, result; 3581b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood int languageCount = 0; 3591b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood 3601b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood string[0] = 0; 3611b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood memset(languages, 0, sizeof(languages)); 36230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 36330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood // read list of supported languages 3641b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood result = usb_device_send_control(device, 3651b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE, USB_REQ_GET_DESCRIPTOR, 3661b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood (USB_DT_STRING << 8) | 0, 0, sizeof(languages), languages); 36730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (result > 0) 36830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood languageCount = (result - 2) / 2; 36930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 37030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood for (i = 1; i <= languageCount; i++) { 37130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood memset(buffer, 0, sizeof(buffer)); 37230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 3731b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood result = usb_device_send_control(device, 3741b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE, USB_REQ_GET_DESCRIPTOR, 3751b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood (USB_DT_STRING << 8) | id, languages[i], sizeof(buffer), buffer); 37630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (result > 0) { 37730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int i; 37830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood // skip first word, and copy the rest to the string, changing shorts to bytes. 37930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood result /= 2; 38030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood for (i = 1; i < result; i++) 38130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood string[i - 1] = buffer[i]; 38230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood string[i - 1] = 0; 38330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return strdup(string); 38430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 38530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 38630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 38730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 38830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 38930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 39030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodchar* usb_device_get_manufacturer_name(struct usb_device *device) 39130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 39230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device_descriptor *desc = (struct usb_device_descriptor *)device->desc; 39330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 39430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (desc->iManufacturer) 39530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return usb_device_get_string(device, desc->iManufacturer); 39630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood else 39730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 39830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 39930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 40030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodchar* usb_device_get_product_name(struct usb_device *device) 40130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 40230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device_descriptor *desc = (struct usb_device_descriptor *)device->desc; 40330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 40430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (desc->iProduct) 40530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return usb_device_get_string(device, desc->iProduct); 40630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood else 40730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 40830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 40930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 41030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodchar* usb_device_get_serial(struct usb_device *device) 41130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 41230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device_descriptor *desc = (struct usb_device_descriptor *)device->desc; 41330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 41430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (desc->iSerialNumber) 41530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return usb_device_get_string(device, desc->iSerialNumber); 41630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood else 41730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 41830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 41930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 42030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_device_is_writeable(struct usb_device *device) 42130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 42230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return device->writeable; 42330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 42430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 42530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodvoid usb_descriptor_iter_init(struct usb_device *device, struct usb_descriptor_iter *iter) 42630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 42730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood iter->config = device->desc; 42830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood iter->config_end = device->desc + device->desc_length; 42930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood iter->curr_desc = device->desc; 43030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 43130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 43230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodstruct usb_descriptor_header *usb_descriptor_iter_next(struct usb_descriptor_iter *iter) 43330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 43430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_descriptor_header* next; 43530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (iter->curr_desc >= iter->config_end) 43630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 43730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood next = (struct usb_descriptor_header*)iter->curr_desc; 43830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood iter->curr_desc += next->bLength; 43930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return next; 44030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 44130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 44230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_device_claim_interface(struct usb_device *device, unsigned int interface) 44330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 44430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return ioctl(device->fd, USBDEVFS_CLAIMINTERFACE, &interface); 44530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 44630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 44730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_device_release_interface(struct usb_device *device, unsigned int interface) 44830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 44930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return ioctl(device->fd, USBDEVFS_RELEASEINTERFACE, &interface); 45030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 45130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 45230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodstruct usb_endpoint *usb_endpoint_open(struct usb_device *dev, 45330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood const struct usb_endpoint_descriptor *desc) 45430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 45530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_endpoint *ep = calloc(1, sizeof(struct usb_endpoint)); 45630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood memcpy(&ep->desc, desc, sizeof(ep->desc)); 45730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood ep->dev = dev; 45830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return ep; 45930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 46030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 46130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodvoid usb_endpoint_close(struct usb_endpoint *ep) 46230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 46330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood // cancel IO here? 46430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood free(ep); 46530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 46630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 46730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_endpoint_queue(struct usb_endpoint *ep, void *data, int len) 46830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 46930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usbdevfs_urb *urb = &ep->urb; 47030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int res; 47130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 47230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("usb_endpoint_queue\n"); 47330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood memset(urb, 0, sizeof(*urb)); 47430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood urb->type = USBDEVFS_URB_TYPE_BULK; 47530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood urb->endpoint = ep->desc.bEndpointAddress; 47630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood urb->status = -1; 47730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood urb->buffer = data; 47830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood urb->buffer_length = len; 47930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 48030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood do { 48130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood res = ioctl(ep->dev->fd, USBDEVFS_SUBMITURB, urb); 48230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } while((res < 0) && (errno == EINTR)); 48330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 48430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return res; 48530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 48630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 48730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_endpoint_wait(struct usb_device *dev, int *out_ep_num) 48830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 48930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usbdevfs_urb *out = NULL; 49030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int res; 49130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 49230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood while (1) { 49330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood res = ioctl(dev->fd, USBDEVFS_REAPURB, &out); 49430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("USBDEVFS_REAPURB returned %d\n", res); 49530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (res < 0) { 49630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if(errno == EINTR) { 49730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood continue; 49830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 49930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("[ reap urb - error ]\n"); 50030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood *out_ep_num = -1; 50130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } else { 50230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("[ urb @%p status = %d, actual = %d ]\n", 50330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood out, out->status, out->actual_length); 50430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood res = out->actual_length; 50530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood *out_ep_num = out->endpoint; 50630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 50730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood break; 50830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 50930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return res; 51030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 51130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 51230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_endpoint_cancel(struct usb_endpoint *ep) 51330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 51430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return ioctl(ep->dev->fd, USBDEVFS_DISCARDURB, &ep->urb); 51530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 51630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 5175e567cb34b5e54467f501fc9703db82ca6639ff3Mike Lockwoodstruct usb_device *usb_endpoint_get_device(struct usb_endpoint *ep) 5185e567cb34b5e54467f501fc9703db82ca6639ff3Mike Lockwood{ 5195e567cb34b5e54467f501fc9703db82ca6639ff3Mike Lockwood return ep->dev; 5205e567cb34b5e54467f501fc9703db82ca6639ff3Mike Lockwood} 5215e567cb34b5e54467f501fc9703db82ca6639ff3Mike Lockwood 52230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_endpoint_number(struct usb_endpoint *ep) 52330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 52430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return ep->desc.bEndpointAddress; 52530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 52630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 52730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_endpoint_max_packet(struct usb_endpoint *ep) 52830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 52930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return __le16_to_cpu(ep->desc.wMaxPacketSize); 53030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 53130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 532