usbhost.c revision dea46b6657845a366d13f57c720eab28c9062ab7
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" 238d66c49258ac4f59bd67c23c9c914cca81f85b01Steve Block#define D ALOGD 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> 36dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet#include <stddef.h> 3730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 3830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <sys/ioctl.h> 3930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <sys/types.h> 4030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <sys/time.h> 4130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <sys/inotify.h> 4230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <dirent.h> 4330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <fcntl.h> 4430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <errno.h> 4530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <ctype.h> 4630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <pthread.h> 4730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 4830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <linux/usbdevice_fs.h> 4930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include <asm/byteorder.h> 5030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 5130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood#include "usbhost/usbhost.h" 5230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 53f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby#define DEV_DIR "/dev" 54dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet#define USB_FS_DIR DEV_DIR "/bus/usb" 55dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet#define USB_FS_ID_SCANNER USB_FS_DIR "/%d/%d" 56dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet#define USB_FS_ID_FORMAT USB_FS_DIR "/%03d/%03d" 5730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 58c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood// From drivers/usb/core/devio.c 59c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood// I don't know why this isn't in a kernel header 60c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood#define MAX_USBFS_BUFFER_SIZE 16384 6130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 62dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet#define MAX_USBFS_WD_COUNT 10 63dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet 646ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwoodstruct usb_host_context { 65dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet int fd; 66dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet usb_device_added_cb cb_added; 67dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet usb_device_removed_cb cb_removed; 68dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet void *data; 69dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet int wds[MAX_USBFS_WD_COUNT]; 70dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet int wdd; 716ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood}; 726ac3aa157493ef24bc837b679dd8292fad8961e0Mike Lockwood 7330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodstruct usb_device { 7430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood char dev_name[64]; 75ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood unsigned char desc[4096]; 7630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int desc_length; 7730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int fd; 7830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int writeable; 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 896cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Gobystatic int find_existing_devices_bus(char *busname, 906cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby usb_device_added_cb added_cb, 916cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby void *client_data) 926cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby{ 936cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby char devname[32]; 946cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby DIR *devdir; 956cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby struct dirent *de; 966cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby int done = 0; 976cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby 986cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby devdir = opendir(busname); 996cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby if(devdir == 0) return 0; 1006cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby 1016cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby while ((de = readdir(devdir)) && !done) { 1026cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby if(badname(de->d_name)) continue; 1036cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby 1046cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby snprintf(devname, sizeof(devname), "%s/%s", busname, de->d_name); 1056cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby done = added_cb(devname, client_data); 1066cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby } // end of devdir while 1076cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby closedir(devdir); 1086cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby 1096cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby return done; 1106cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby} 1116cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby 1127a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood/* returns true if one of the callbacks indicates we are done */ 1137a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwoodstatic int find_existing_devices(usb_device_added_cb added_cb, 1147a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood void *client_data) 11530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 1166cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby char busname[32]; 1176cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby DIR *busdir; 11830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct dirent *de; 1197a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood int done = 0; 12030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 12130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood busdir = opendir(USB_FS_DIR); 122f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby if(busdir == 0) return 0; 12330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 1247a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood while ((de = readdir(busdir)) != 0 && !done) { 12530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if(badname(de->d_name)) continue; 12630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 127dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet snprintf(busname, sizeof(busname), USB_FS_DIR "/%s", de->d_name); 1286cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby done = find_existing_devices_bus(busname, added_cb, 1296cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby client_data); 130dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet } //end of busdir while 13130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood closedir(busdir); 1327a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood 1337a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood return done; 1347a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood} 1357a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood 136f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Gobystatic void watch_existing_subdirs(struct usb_host_context *context, 137f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby int *wds, int wd_count) 138f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby{ 139f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby char path[100]; 140f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby int i, ret; 141f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby 142f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby wds[0] = inotify_add_watch(context->fd, USB_FS_DIR, IN_CREATE | IN_DELETE); 143f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby if (wds[0] < 0) 144f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby return; 145f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby 146f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby /* watch existing subdirectories of USB_FS_DIR */ 147f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby for (i = 1; i < wd_count; i++) { 148dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet snprintf(path, sizeof(path), USB_FS_DIR "/%03d", i); 149f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby ret = inotify_add_watch(context->fd, path, IN_CREATE | IN_DELETE); 150f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby if (ret >= 0) 151f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby wds[i] = ret; 152f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby } 153f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby} 154f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby 1557a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwoodstruct usb_host_context *usb_host_init() 1567a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood{ 1577a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood struct usb_host_context *context = calloc(1, sizeof(struct usb_host_context)); 1587a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood if (!context) { 1597a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood fprintf(stderr, "out of memory in usb_host_context\n"); 1607a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood return NULL; 1617a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood } 1627a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood context->fd = inotify_init(); 1637a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood if (context->fd < 0) { 1647a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood fprintf(stderr, "inotify_init failed\n"); 1657a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood free(context); 1667a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood return NULL; 1677a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood } 1687a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood return context; 1697a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood} 1707a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood 1717a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwoodvoid usb_host_cleanup(struct usb_host_context *context) 1727a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood{ 1737a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood close(context->fd); 1747a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood free(context); 17530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 17630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 177dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquetint usb_host_get_fd(struct usb_host_context *context) 178dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet{ 179dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet return context->fd; 180dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet} /* usb_host_get_fd() */ 181dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet 182dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquetint usb_host_load(struct usb_host_context *context, 1837a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood usb_device_added_cb added_cb, 1847a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood usb_device_removed_cb removed_cb, 185a805519ceedc53afa5453a6d8a7d80038d885d9fMike Lockwood usb_discovery_done_cb discovery_done_cb, 1867a96ba436c9a2bacc64e712bdb53bd7accc5c3a9Mike Lockwood void *client_data) 18730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 188dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet int done = 0; 189dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet int i; 190dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet 191dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet context->cb_added = added_cb; 192dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet context->cb_removed = removed_cb; 193dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet context->data = client_data; 19430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 19530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("Created device discovery thread\n"); 19630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 19730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* watch for files added and deleted within USB_FS_DIR */ 198dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet for (i = 0; i < MAX_USBFS_WD_COUNT; i++) 199dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet context->wds[i] = -1; 200f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby 20130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* watch the root for new subdirectories */ 202dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet context->wdd = inotify_add_watch(context->fd, DEV_DIR, IN_CREATE | IN_DELETE); 203dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet if (context->wdd < 0) { 20430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood fprintf(stderr, "inotify_add_watch failed\n"); 205e8849d190a3097274dcb64416e564538a1017054Mike Lockwood if (discovery_done_cb) 206e8849d190a3097274dcb64416e564538a1017054Mike Lockwood discovery_done_cb(client_data); 207dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet return done; 20830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 20930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 210dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet watch_existing_subdirs(context, context->wds, MAX_USBFS_WD_COUNT); 21130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 21230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* check for existing devices first, after we have inotify set up */ 2136cc883ca098f34bd126478a6aa19d5cce48d71a9Benoit Goby done = find_existing_devices(added_cb, client_data); 214a805519ceedc53afa5453a6d8a7d80038d885d9fMike Lockwood if (discovery_done_cb) 215a805519ceedc53afa5453a6d8a7d80038d885d9fMike Lockwood done |= discovery_done_cb(client_data); 21630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 217dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet return done; 218dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet} /* usb_host_load() */ 219dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet 220dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquetint usb_host_read_event(struct usb_host_context *context) 221dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet{ 222dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet struct inotify_event* event; 223dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet char event_buf[512]; 224dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet char path[100]; 225dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet int i, ret, done = 0; 226dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet int j, event_size; 227dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet int wd; 228dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet 229dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet ret = read(context->fd, event_buf, sizeof(event_buf)); 230dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet if (ret >= (int)sizeof(struct inotify_event)) { 231dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet event = (struct inotify_event *)event_buf; 232dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet wd = event->wd; 233dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet if (wd == context->wdd) { 234dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet if ((event->mask & IN_CREATE) && !strcmp(event->name, "bus")) { 235dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet watch_existing_subdirs(context, context->wds, MAX_USBFS_WD_COUNT); 236dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet done = find_existing_devices(context->cb_added, context->data); 237dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet } else if ((event->mask & IN_DELETE) && !strcmp(event->name, "bus")) { 238dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet for (i = 0; i < MAX_USBFS_WD_COUNT; i++) { 239dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet if (context->wds[i] >= 0) { 240dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet inotify_rm_watch(context->fd, context->wds[i]); 241dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet context->wds[i] = -1; 242f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby } 243f4de078388242fff9b68c04b122e8a095cab9b0eBenoit Goby } 244dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet } 245dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet } else if (wd == context->wds[0]) { 246dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet i = atoi(event->name); 247dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet snprintf(path, sizeof(path), USB_FS_DIR "/%s", event->name); 248dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet D("%s subdirectory %s: index: %d\n", (event->mask & IN_CREATE) ? 249dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet "new" : "gone", path, i); 250dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet if (i > 0 && i < MAX_USBFS_WD_COUNT) { 251dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet if (event->mask & IN_CREATE) { 252dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet ret = inotify_add_watch(context->fd, path, 253dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet IN_CREATE | IN_DELETE); 254dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet if (ret >= 0) 255dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet context->wds[i] = ret; 256dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet done = find_existing_devices_bus(path, context->cb_added, 257dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet context->data); 258dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet } else if (event->mask & IN_DELETE) { 259dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet inotify_rm_watch(context->fd, context->wds[i]); 260dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet context->wds[i] = -1; 26130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 262dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet } 263dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet } else { 264dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet for (i = 1; (i < MAX_USBFS_WD_COUNT) && !done; i++) { 265dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet if (wd == context->wds[i]) { 266dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet snprintf(path, sizeof(path), USB_FS_DIR "/%03d/%s", i, event->name); 267dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet if (event->mask == IN_CREATE) { 268dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet D("new device %s\n", path); 269dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet done = context->cb_added(path, context->data); 270dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet } else if (event->mask == IN_DELETE) { 271dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet D("gone device %s\n", path); 272dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet done = context->cb_removed(path, context->data); 27330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 27430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 27530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 27630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 27730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 278dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet 279dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet return done; 280dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet} /* usb_host_read_event() */ 281dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet 282dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquetvoid usb_host_run(struct usb_host_context *context, 283dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet usb_device_added_cb added_cb, 284dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet usb_device_removed_cb removed_cb, 285dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet usb_discovery_done_cb discovery_done_cb, 286dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet void *client_data) 287dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet{ 288dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet int done; 289dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet 290dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet done = usb_host_load(context, added_cb, removed_cb, discovery_done_cb, client_data); 291dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet 292dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet while (!done) { 293dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet 294dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet done = usb_host_read_event(context); 295dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet } 296dea46b6657845a366d13f57c720eab28c9062ab7Guillaume Ranquet} /* usb_host_run() */ 29730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 29830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodstruct usb_device *usb_device_open(const char *dev_name) 29930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 300cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood int fd, did_retry = 0, writeable = 1; 30130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 302ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood D("usb_device_open %s\n", dev_name); 303ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood 30430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodretry: 30530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood fd = open(dev_name, O_RDWR); 30630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (fd < 0) { 30730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* if we fail, see if have read-only access */ 30830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood fd = open(dev_name, O_RDONLY); 309e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood D("usb_device_open open returned %d errno %d\n", fd, errno); 310e15af09876c5e0301084f46b8036aed147cf9c24Mike Lockwood if (fd < 0 && (errno == EACCES || errno == ENOENT) && !did_retry) { 31130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood /* work around race condition between inotify and permissions management */ 31230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood sleep(1); 31330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood did_retry = 1; 31430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood goto retry; 31530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 31630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 317cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood if (fd < 0) 318cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return NULL; 319cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood writeable = 0; 32030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("[ usb open read-only %s fd = %d]\n", dev_name, fd); 32130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 32230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 323cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood struct usb_device* result = usb_device_new(dev_name, fd); 324cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood if (result) 325cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood result->writeable = writeable; 326cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return result; 327cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood} 328cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood 329cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwoodvoid usb_device_close(struct usb_device *device) 330cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood{ 331cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood close(device->fd); 332cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood free(device); 333cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood} 334cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood 335cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwoodstruct usb_device *usb_device_new(const char *dev_name, int fd) 336cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood{ 337cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood struct usb_device *device = calloc(1, sizeof(struct usb_device)); 338cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood int length; 339cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood 340ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood D("usb_device_new %s fd: %d\n", dev_name, fd); 341ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood 342cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood if (lseek(fd, 0, SEEK_SET) != 0) 343cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood goto failed; 34430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood length = read(fd, device->desc, sizeof(device->desc)); 345ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood D("usb_device_new read returned %d errno %d\n", length, errno); 34630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (length < 0) 347cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood goto failed; 34830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 34993aff72d9b469f4b77468bab654cd65243b662e6Mike Lockwood strncpy(device->dev_name, dev_name, sizeof(device->dev_name) - 1); 35030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood device->fd = fd; 35130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood device->desc_length = length; 352cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood // assume we are writeable, since usb_device_get_fd will only return writeable fds 353cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood device->writeable = 1; 35430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return device; 355cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood 356cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwoodfailed: 35730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood close(fd); 35830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood free(device); 35930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 36030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 36130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 362cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwoodstatic int usb_device_reopen_writeable(struct usb_device *device) 36330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 364cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood if (device->writeable) 365cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return 1; 366cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood 367cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood int fd = open(device->dev_name, O_RDWR); 368cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood if (fd >= 0) { 369cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood close(device->fd); 370cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood device->fd = fd; 371cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood device->writeable = 1; 372cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return 1; 373cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood } 374cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood D("usb_device_reopen_writeable failed errno %d\n", errno); 375cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return 0; 376cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood} 377cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood 378cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwoodint usb_device_get_fd(struct usb_device *device) 379cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood{ 380cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood if (!usb_device_reopen_writeable(device)) 381cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return -1; 382cd185f23cc6f062b252d1d19bca55e721290ee62Mike Lockwood return device->fd; 38330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 38430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 38530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodconst char* usb_device_get_name(struct usb_device *device) 38630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 38730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return device->dev_name; 38830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 38930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 390203f102028c4df33c191d8cd610775eba8d5366dMike Lockwoodint usb_device_get_unique_id(struct usb_device *device) 391203f102028c4df33c191d8cd610775eba8d5366dMike Lockwood{ 392203f102028c4df33c191d8cd610775eba8d5366dMike Lockwood int bus = 0, dev = 0; 393203f102028c4df33c191d8cd610775eba8d5366dMike Lockwood sscanf(device->dev_name, USB_FS_ID_SCANNER, &bus, &dev); 394203f102028c4df33c191d8cd610775eba8d5366dMike Lockwood return bus * 1000 + dev; 395203f102028c4df33c191d8cd610775eba8d5366dMike Lockwood} 396203f102028c4df33c191d8cd610775eba8d5366dMike Lockwood 39707eb4af174f31c449a86dd459e2c81702f74acf1Mike Lockwoodint usb_device_get_unique_id_from_name(const char* name) 39807eb4af174f31c449a86dd459e2c81702f74acf1Mike Lockwood{ 39907eb4af174f31c449a86dd459e2c81702f74acf1Mike Lockwood int bus = 0, dev = 0; 40007eb4af174f31c449a86dd459e2c81702f74acf1Mike Lockwood sscanf(name, USB_FS_ID_SCANNER, &bus, &dev); 40107eb4af174f31c449a86dd459e2c81702f74acf1Mike Lockwood return bus * 1000 + dev; 40207eb4af174f31c449a86dd459e2c81702f74acf1Mike Lockwood} 40307eb4af174f31c449a86dd459e2c81702f74acf1Mike Lockwood 4047d700f8bdce747a26e3ee4737683194d77286ba3Mike Lockwoodchar* usb_device_get_name_from_unique_id(int id) 4057d700f8bdce747a26e3ee4737683194d77286ba3Mike Lockwood{ 4067d700f8bdce747a26e3ee4737683194d77286ba3Mike Lockwood int bus = id / 1000; 4077d700f8bdce747a26e3ee4737683194d77286ba3Mike Lockwood int dev = id % 1000; 4087d700f8bdce747a26e3ee4737683194d77286ba3Mike Lockwood char* result = (char *)calloc(1, strlen(USB_FS_ID_FORMAT)); 4097d700f8bdce747a26e3ee4737683194d77286ba3Mike Lockwood snprintf(result, strlen(USB_FS_ID_FORMAT) - 1, USB_FS_ID_FORMAT, bus, dev); 4107d700f8bdce747a26e3ee4737683194d77286ba3Mike Lockwood return result; 4117d700f8bdce747a26e3ee4737683194d77286ba3Mike Lockwood} 4127d700f8bdce747a26e3ee4737683194d77286ba3Mike Lockwood 41330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwooduint16_t usb_device_get_vendor_id(struct usb_device *device) 41430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 41530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device_descriptor* desc = (struct usb_device_descriptor*)device->desc; 41630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return __le16_to_cpu(desc->idVendor); 41730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 41830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 41930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwooduint16_t usb_device_get_product_id(struct usb_device *device) 42030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 42130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device_descriptor* desc = (struct usb_device_descriptor*)device->desc; 42230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return __le16_to_cpu(desc->idProduct); 42330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 42430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 42550372073d2919480fb32d56cb3b91663b9fca0f1Mike Lockwoodconst struct usb_device_descriptor* usb_device_get_device_descriptor(struct usb_device *device) 42650372073d2919480fb32d56cb3b91663b9fca0f1Mike Lockwood{ 42750372073d2919480fb32d56cb3b91663b9fca0f1Mike Lockwood return (struct usb_device_descriptor*)device->desc; 42850372073d2919480fb32d56cb3b91663b9fca0f1Mike Lockwood} 42950372073d2919480fb32d56cb3b91663b9fca0f1Mike Lockwood 4301b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwoodchar* usb_device_get_string(struct usb_device *device, int id) 4311b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood{ 4321b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood char string[256]; 4331b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood __u16 buffer[128]; 4341b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood __u16 languages[128]; 4351b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood int i, result; 4361b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood int languageCount = 0; 4371b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood 4381b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood string[0] = 0; 4391b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood memset(languages, 0, sizeof(languages)); 44030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 44130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood // read list of supported languages 442120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood result = usb_device_control_transfer(device, 4431b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE, USB_REQ_GET_DESCRIPTOR, 444120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood (USB_DT_STRING << 8) | 0, 0, languages, sizeof(languages), 0); 44530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (result > 0) 44630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood languageCount = (result - 2) / 2; 44730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 44830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood for (i = 1; i <= languageCount; i++) { 44930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood memset(buffer, 0, sizeof(buffer)); 45030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 451120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood result = usb_device_control_transfer(device, 4521b7d991b433cf6d6fae4f40cb37f9b6c6043cfbcMike Lockwood USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE, USB_REQ_GET_DESCRIPTOR, 453120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood (USB_DT_STRING << 8) | id, languages[i], buffer, sizeof(buffer), 0); 45430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (result > 0) { 45530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int i; 45630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood // skip first word, and copy the rest to the string, changing shorts to bytes. 45730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood result /= 2; 45830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood for (i = 1; i < result; i++) 45930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood string[i - 1] = buffer[i]; 46030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood string[i - 1] = 0; 46130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return strdup(string); 46230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 46330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 46430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 46530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 46630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 46730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 46830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodchar* usb_device_get_manufacturer_name(struct usb_device *device) 46930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 47030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device_descriptor *desc = (struct usb_device_descriptor *)device->desc; 47130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 47230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (desc->iManufacturer) 47330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return usb_device_get_string(device, desc->iManufacturer); 47430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood else 47530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 47630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 47730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 47830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodchar* usb_device_get_product_name(struct usb_device *device) 47930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 48030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device_descriptor *desc = (struct usb_device_descriptor *)device->desc; 48130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 48230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (desc->iProduct) 48330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return usb_device_get_string(device, desc->iProduct); 48430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood else 48530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 48630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 48730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 48830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodchar* usb_device_get_serial(struct usb_device *device) 48930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 49030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_device_descriptor *desc = (struct usb_device_descriptor *)device->desc; 49130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 49230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (desc->iSerialNumber) 49330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return usb_device_get_string(device, desc->iSerialNumber); 49430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood else 49530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 49630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 49730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 49830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_device_is_writeable(struct usb_device *device) 49930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 50030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return device->writeable; 50130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 50230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 50330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodvoid usb_descriptor_iter_init(struct usb_device *device, struct usb_descriptor_iter *iter) 50430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 50530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood iter->config = device->desc; 50630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood iter->config_end = device->desc + device->desc_length; 50730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood iter->curr_desc = device->desc; 50830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 50930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 51030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodstruct usb_descriptor_header *usb_descriptor_iter_next(struct usb_descriptor_iter *iter) 51130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 51230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood struct usb_descriptor_header* next; 51330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (iter->curr_desc >= iter->config_end) 51430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return NULL; 51530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood next = (struct usb_descriptor_header*)iter->curr_desc; 51630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood iter->curr_desc += next->bLength; 51730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return next; 51830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 51930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 52030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_device_claim_interface(struct usb_device *device, unsigned int interface) 52130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 52230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return ioctl(device->fd, USBDEVFS_CLAIMINTERFACE, &interface); 52330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 52430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 52530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwoodint usb_device_release_interface(struct usb_device *device, unsigned int interface) 52630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 52730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return ioctl(device->fd, USBDEVFS_RELEASEINTERFACE, &interface); 52830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 52930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 530ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwoodint usb_device_connect_kernel_driver(struct usb_device *device, 531ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood unsigned int interface, int connect) 532ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood{ 533ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood struct usbdevfs_ioctl ctl; 534ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood 535ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood ctl.ifno = interface; 536ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood ctl.ioctl_code = (connect ? USBDEVFS_CONNECT : USBDEVFS_DISCONNECT); 537ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood ctl.data = NULL; 538ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood return ioctl(device->fd, USBDEVFS_IOCTL, &ctl); 539ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood} 540ec9e7b1c1844e66c39a4f63ded8208c1717380f8Mike Lockwood 541120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwoodint usb_device_control_transfer(struct usb_device *device, 542120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood int requestType, 543120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood int request, 544120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood int value, 545120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood int index, 546120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood void* buffer, 547120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood int length, 548120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood unsigned int timeout) 549120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood{ 550120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood struct usbdevfs_ctrltransfer ctrl; 551120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood 552120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood // this usually requires read/write permission 553120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood if (!usb_device_reopen_writeable(device)) 554120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood return -1; 555120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood 556120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood memset(&ctrl, 0, sizeof(ctrl)); 557120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.bRequestType = requestType; 558120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.bRequest = request; 559120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.wValue = value; 560120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.wIndex = index; 561120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.wLength = length; 562120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.data = buffer; 563120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.timeout = timeout; 564120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood return ioctl(device->fd, USBDEVFS_CONTROL, &ctrl); 565120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood} 566120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood 567120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwoodint usb_device_bulk_transfer(struct usb_device *device, 568120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood int endpoint, 569120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood void* buffer, 570120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood int length, 571120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood unsigned int timeout) 572120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood{ 573120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood struct usbdevfs_bulktransfer ctrl; 574120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood 575c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood // need to limit request size to avoid EINVAL 576c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood if (length > MAX_USBFS_BUFFER_SIZE) 577c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood length = MAX_USBFS_BUFFER_SIZE; 578c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood 579120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood memset(&ctrl, 0, sizeof(ctrl)); 580120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.ep = endpoint; 581120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.len = length; 582120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.data = buffer; 583120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood ctrl.timeout = timeout; 584120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood return ioctl(device->fd, USBDEVFS_BULK, &ctrl); 585120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood} 586120b57a3d9703bccba534af335aa94dd3a41be2fMike Lockwood 587e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwoodstruct usb_request *usb_request_new(struct usb_device *dev, 588e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood const struct usb_endpoint_descriptor *ep_desc) 58930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 590e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood struct usbdevfs_urb *urb = calloc(1, sizeof(struct usbdevfs_urb)); 591e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood if (!urb) 592e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood return NULL; 593e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood 594e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood if ((ep_desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) 595e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood urb->type = USBDEVFS_URB_TYPE_BULK; 596e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood else if ((ep_desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) 597e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood urb->type = USBDEVFS_URB_TYPE_INTERRUPT; 598e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood else { 599e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood D("Unsupported endpoint type %d", ep_desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK); 600e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood free(urb); 601e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood return NULL; 602e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood } 603e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood urb->endpoint = ep_desc->bEndpointAddress; 604e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood 605e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood struct usb_request *req = calloc(1, sizeof(struct usb_request)); 606e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood if (!req) { 607e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood free(urb); 608e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood return NULL; 609e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood } 610e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood 611e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood req->dev = dev; 612e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood req->max_packet_size = __le16_to_cpu(ep_desc->wMaxPacketSize); 613e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood req->private_data = urb; 614b5d68a3c28d0b7a947373344cbda2a2369d0b67dMike Lockwood req->endpoint = urb->endpoint; 615e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood urb->usercontext = req; 616e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood 617e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood return req; 61830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 61930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 620e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwoodvoid usb_request_free(struct usb_request *req) 62130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 622e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood free(req->private_data); 623e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood free(req); 62430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 62530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 626e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwoodint usb_request_queue(struct usb_request *req) 62730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 628e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood struct usbdevfs_urb *urb = (struct usbdevfs_urb*)req->private_data; 62930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood int res; 63030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 63130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood urb->status = -1; 632e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood urb->buffer = req->buffer; 633c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood // need to limit request size to avoid EINVAL 634c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood if (req->buffer_length > MAX_USBFS_BUFFER_SIZE) 635c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood urb->buffer_length = MAX_USBFS_BUFFER_SIZE; 636c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood else 637c4c00d8e6a215020be87f6702844267e105e1f0eMike Lockwood urb->buffer_length = req->buffer_length; 63830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 63930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood do { 640e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood res = ioctl(req->dev->fd, USBDEVFS_SUBMITURB, urb); 64130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } while((res < 0) && (errno == EINTR)); 64230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 64330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood return res; 64430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 64530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 646e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwoodstruct usb_request *usb_request_wait(struct usb_device *dev) 64730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 648e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood struct usbdevfs_urb *urb = NULL; 649e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood struct usb_request *req = NULL; 65030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 65130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood while (1) { 652e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood int res = ioctl(dev->fd, USBDEVFS_REAPURB, &urb); 65330ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("USBDEVFS_REAPURB returned %d\n", res); 65430ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if (res < 0) { 65530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood if(errno == EINTR) { 65630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood continue; 65730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 65830ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("[ reap urb - error ]\n"); 659e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood return NULL; 66030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } else { 66130ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood D("[ urb @%p status = %d, actual = %d ]\n", 662e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood urb, urb->status, urb->actual_length); 663e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood req = (struct usb_request*)urb->usercontext; 664e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood req->actual_length = urb->actual_length; 66530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 66630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood break; 66730ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood } 668e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood return req; 66930ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 67030ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 671e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwoodint usb_request_cancel(struct usb_request *req) 67230ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood{ 673e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood struct usbdevfs_urb *urb = ((struct usbdevfs_urb*)req->private_data); 674e533c5f1005e8913f577d2aeac5a26f88f55a249Mike Lockwood return ioctl(req->dev->fd, USBDEVFS_DISCARDURB, &urb); 67530ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood} 67630ff2c70ce05d761e8cb0ab7ee02b39a681fe0cbMike Lockwood 677