diff options
Diffstat (limited to 'minadbd/usb_linux_client.c')
| -rw-r--r-- | minadbd/usb_linux_client.c | 493 |
1 files changed, 0 insertions, 493 deletions
diff --git a/minadbd/usb_linux_client.c b/minadbd/usb_linux_client.c deleted file mode 100644 index 29bab15..0000000 --- a/minadbd/usb_linux_client.c +++ /dev/null @@ -1,493 +0,0 @@ -/* - * Copyright (C) 2007 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> - -#include <linux/usb/ch9.h> -#include <linux/usb/functionfs.h> -#include <sys/ioctl.h> -#include <sys/types.h> -#include <dirent.h> -#include <errno.h> - -#include "sysdeps.h" - -#define TRACE_TAG TRACE_USB -#include "adb.h" - -#define MAX_PACKET_SIZE_FS 64 -#define MAX_PACKET_SIZE_HS 512 - -#define cpu_to_le16(x) htole16(x) -#define cpu_to_le32(x) htole32(x) - -struct usb_handle -{ - int fd; - adb_cond_t notify; - adb_mutex_t lock; - - int (*write)(usb_handle *h, const void *data, int len); - int (*read)(usb_handle *h, void *data, int len); - void (*kick)(usb_handle *h); - - int control; - int bulk_out; /* "out" from the host's perspective => source for adbd */ - int bulk_in; /* "in" from the host's perspective => sink for adbd */ -}; - -static const struct { - struct usb_functionfs_descs_head header; - struct { - struct usb_interface_descriptor intf; - struct usb_endpoint_descriptor_no_audio source; - struct usb_endpoint_descriptor_no_audio sink; - } __attribute__((packed)) fs_descs, hs_descs; -} __attribute__((packed)) descriptors = { - .header = { - .magic = cpu_to_le32(FUNCTIONFS_DESCRIPTORS_MAGIC), - .length = cpu_to_le32(sizeof(descriptors)), - .fs_count = 3, - .hs_count = 3, - }, - .fs_descs = { - .intf = { - .bLength = sizeof(descriptors.fs_descs.intf), - .bDescriptorType = USB_DT_INTERFACE, - .bInterfaceNumber = 0, - .bNumEndpoints = 2, - .bInterfaceClass = ADB_CLASS, - .bInterfaceSubClass = ADB_SUBCLASS, - .bInterfaceProtocol = ADB_PROTOCOL, - .iInterface = 1, /* first string from the provided table */ - }, - .source = { - .bLength = sizeof(descriptors.fs_descs.source), - .bDescriptorType = USB_DT_ENDPOINT, - .bEndpointAddress = 1 | USB_DIR_OUT, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = MAX_PACKET_SIZE_FS, - }, - .sink = { - .bLength = sizeof(descriptors.fs_descs.sink), - .bDescriptorType = USB_DT_ENDPOINT, - .bEndpointAddress = 2 | USB_DIR_IN, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = MAX_PACKET_SIZE_FS, - }, - }, - .hs_descs = { - .intf = { - .bLength = sizeof(descriptors.hs_descs.intf), - .bDescriptorType = USB_DT_INTERFACE, - .bInterfaceNumber = 0, - .bNumEndpoints = 2, - .bInterfaceClass = ADB_CLASS, - .bInterfaceSubClass = ADB_SUBCLASS, - .bInterfaceProtocol = ADB_PROTOCOL, - .iInterface = 1, /* first string from the provided table */ - }, - .source = { - .bLength = sizeof(descriptors.hs_descs.source), - .bDescriptorType = USB_DT_ENDPOINT, - .bEndpointAddress = 1 | USB_DIR_OUT, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = MAX_PACKET_SIZE_HS, - }, - .sink = { - .bLength = sizeof(descriptors.hs_descs.sink), - .bDescriptorType = USB_DT_ENDPOINT, - .bEndpointAddress = 2 | USB_DIR_IN, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = MAX_PACKET_SIZE_HS, - }, - }, -}; - -#define STR_INTERFACE_ "ADB Interface" - -static const struct { - struct usb_functionfs_strings_head header; - struct { - __le16 code; - const char str1[sizeof(STR_INTERFACE_)]; - } __attribute__((packed)) lang0; -} __attribute__((packed)) strings = { - .header = { - .magic = cpu_to_le32(FUNCTIONFS_STRINGS_MAGIC), - .length = cpu_to_le32(sizeof(strings)), - .str_count = cpu_to_le32(1), - .lang_count = cpu_to_le32(1), - }, - .lang0 = { - cpu_to_le16(0x0409), /* en-us */ - STR_INTERFACE_, - }, -}; - -void usb_cleanup() -{ - // nothing to do here -} - -static void *usb_adb_open_thread(void *x) -{ - struct usb_handle *usb = (struct usb_handle *)x; - int fd; - - while (1) { - // wait until the USB device needs opening - adb_mutex_lock(&usb->lock); - while (usb->fd != -1) - adb_cond_wait(&usb->notify, &usb->lock); - adb_mutex_unlock(&usb->lock); - - D("[ usb_thread - opening device ]\n"); - do { - /* XXX use inotify? */ - fd = unix_open("/dev/android_adb", O_RDWR); - if (fd < 0) { - // to support older kernels - fd = unix_open("/dev/android", O_RDWR); - fprintf(stderr, "usb_adb_open_thread: %d\n", fd ); - } - if (fd < 0) { - adb_sleep_ms(1000); - } - } while (fd < 0); - D("[ opening device succeeded ]\n"); - - close_on_exec(fd); - usb->fd = fd; - - D("[ usb_thread - registering device ]\n"); - register_usb_transport(usb, 0, 1); - } - - // never gets here - return 0; -} - -static int usb_adb_write(usb_handle *h, const void *data, int len) -{ - int n; - - D("about to write (fd=%d, len=%d)\n", h->fd, len); - n = adb_write(h->fd, data, len); - if(n != len) { - D("ERROR: fd = %d, n = %d, errno = %d (%s)\n", - h->fd, n, errno, strerror(errno)); - return -1; - } - D("[ done fd=%d ]\n", h->fd); - return 0; -} - -static int usb_adb_read(usb_handle *h, void *data, int len) -{ - int n; - - D("about to read (fd=%d, len=%d)\n", h->fd, len); - n = adb_read(h->fd, data, len); - if(n != len) { - D("ERROR: fd = %d, n = %d, errno = %d (%s)\n", - h->fd, n, errno, strerror(errno)); - return -1; - } - D("[ done fd=%d ]\n", h->fd); - return 0; -} - -static void usb_adb_kick(usb_handle *h) -{ - D("usb_kick\n"); - adb_mutex_lock(&h->lock); - adb_close(h->fd); - h->fd = -1; - - // notify usb_adb_open_thread that we are disconnected - adb_cond_signal(&h->notify); - adb_mutex_unlock(&h->lock); -} - -static void usb_adb_init() -{ - usb_handle *h; - adb_thread_t tid; - int fd; - - h = calloc(1, sizeof(usb_handle)); - - h->write = usb_adb_write; - h->read = usb_adb_read; - h->kick = usb_adb_kick; - h->fd = -1; - - adb_cond_init(&h->notify, 0); - adb_mutex_init(&h->lock, 0); - - fprintf(stderr, "Starting to open usb_init()\n"); - // Open the file /dev/android_adb_enable to trigger - // the enabling of the adb USB function in the kernel. - // We never touch this file again - just leave it open - // indefinitely so the kernel will know when we are running - // and when we are not. - fd = unix_open("/dev/android_adb_enable", O_RDWR); - fprintf(stderr, "unix_open to open usb_init(): %d\n", fd); - if (fd < 0) { - D("failed to open /dev/android_adb_enable\n"); - } else { - close_on_exec(fd); - } - - D("[ usb_init - starting thread ]\n"); - if(adb_thread_create(&tid, usb_adb_open_thread, h)){ - fatal_errno("cannot create usb thread"); - fprintf(stderr, "cannot create the usb thread()\n"); - } -} - - -static void init_functionfs(struct usb_handle *h) -{ - ssize_t ret; - - D("OPENING %s\n", USB_FFS_ADB_EP0); - h->control = adb_open(USB_FFS_ADB_EP0, O_RDWR); - if (h->control < 0) { - D("[ %s: cannot open control endpoint: errno=%d]\n", USB_FFS_ADB_EP0, errno); - goto err; - } - - ret = adb_write(h->control, &descriptors, sizeof(descriptors)); - if (ret < 0) { - D("[ %s: write descriptors failed: errno=%d ]\n", USB_FFS_ADB_EP0, errno); - goto err; - } - - ret = adb_write(h->control, &strings, sizeof(strings)); - if (ret < 0) { - D("[ %s: writing strings failed: errno=%d]\n", USB_FFS_ADB_EP0, errno); - goto err; - } - - h->bulk_out = adb_open(USB_FFS_ADB_OUT, O_RDWR); - if (h->bulk_out < 0) { - D("[ %s: cannot open bulk-out ep: errno=%d ]\n", USB_FFS_ADB_OUT, errno); - goto err; - } - - h->bulk_in = adb_open(USB_FFS_ADB_IN, O_RDWR); - if (h->bulk_in < 0) { - D("[ %s: cannot open bulk-in ep: errno=%d ]\n", USB_FFS_ADB_IN, errno); - goto err; - } - - return; - -err: - if (h->bulk_in > 0) { - adb_close(h->bulk_in); - h->bulk_in = -1; - } - if (h->bulk_out > 0) { - adb_close(h->bulk_out); - h->bulk_out = -1; - } - if (h->control > 0) { - adb_close(h->control); - h->control = -1; - } - return; -} - -static void *usb_ffs_open_thread(void *x) -{ - struct usb_handle *usb = (struct usb_handle *)x; - - while (1) { - // wait until the USB device needs opening - adb_mutex_lock(&usb->lock); - while (usb->control != -1) - adb_cond_wait(&usb->notify, &usb->lock); - adb_mutex_unlock(&usb->lock); - - while (1) { - init_functionfs(usb); - - if (usb->control >= 0) - break; - - adb_sleep_ms(1000); - } - - D("[ usb_thread - registering device ]\n"); - register_usb_transport(usb, 0, 1); - } - - // never gets here - return 0; -} - -static int bulk_write(int bulk_in, const char *buf, size_t length) -{ - size_t count = 0; - int ret; - - do { - ret = adb_write(bulk_in, buf + count, length - count); - if (ret < 0) { - if (errno != EINTR) - return ret; - } else { - count += ret; - } - } while (count < length); - - D("[ bulk_write done fd=%d ]\n", bulk_in); - return count; -} - -static int usb_ffs_write(usb_handle *h, const void *data, int len) -{ - int n; - - D("about to write (fd=%d, len=%d)\n", h->bulk_in, len); - n = bulk_write(h->bulk_in, data, len); - if (n != len) { - D("ERROR: fd = %d, n = %d, errno = %d (%s)\n", - h->bulk_in, n, errno, strerror(errno)); - return -1; - } - D("[ done fd=%d ]\n", h->bulk_in); - return 0; -} - -static int bulk_read(int bulk_out, char *buf, size_t length) -{ - size_t count = 0; - int ret; - - do { - ret = adb_read(bulk_out, buf + count, length - count); - if (ret < 0) { - if (errno != EINTR) { - D("[ bulk_read failed fd=%d length=%zu count=%zu ]\n", - bulk_out, length, count); - return ret; - } - } else { - count += ret; - } - } while (count < length); - - return count; -} - -static int usb_ffs_read(usb_handle *h, void *data, int len) -{ - int n; - - D("about to read (fd=%d, len=%d)\n", h->bulk_out, len); - n = bulk_read(h->bulk_out, data, len); - if (n != len) { - D("ERROR: fd = %d, n = %d, errno = %d (%s)\n", - h->bulk_out, n, errno, strerror(errno)); - return -1; - } - D("[ done fd=%d ]\n", h->bulk_out); - return 0; -} - -static void usb_ffs_kick(usb_handle *h) -{ - int err; - - err = ioctl(h->bulk_in, FUNCTIONFS_CLEAR_HALT); - if (err < 0) - D("[ kick: source (fd=%d) clear halt failed (%d) ]", h->bulk_in, errno); - - err = ioctl(h->bulk_out, FUNCTIONFS_CLEAR_HALT); - if (err < 0) - D("[ kick: sink (fd=%d) clear halt failed (%d) ]", h->bulk_out, errno); - - adb_mutex_lock(&h->lock); - adb_close(h->control); - adb_close(h->bulk_out); - adb_close(h->bulk_in); - h->control = h->bulk_out = h->bulk_in = -1; - - // notify usb_ffs_open_thread that we are disconnected - adb_cond_signal(&h->notify); - adb_mutex_unlock(&h->lock); -} - -static void usb_ffs_init() -{ - usb_handle *h; - adb_thread_t tid; - - D("[ usb_init - using FunctionFS ]\n"); - - h = calloc(1, sizeof(usb_handle)); - - h->write = usb_ffs_write; - h->read = usb_ffs_read; - h->kick = usb_ffs_kick; - - h->control = -1; - h->bulk_out = -1; - h->bulk_out = -1; - - adb_cond_init(&h->notify, 0); - adb_mutex_init(&h->lock, 0); - - D("[ usb_init - starting thread ]\n"); - if (adb_thread_create(&tid, usb_ffs_open_thread, h)){ - fatal_errno("[ cannot create usb thread ]\n"); - } -} - -void usb_init() -{ - if (access(USB_FFS_ADB_EP0, F_OK) == 0) - usb_ffs_init(); - else - usb_adb_init(); -} - -int usb_write(usb_handle *h, const void *data, int len) -{ - return h->write(h, data, len); -} - -int usb_read(usb_handle *h, void *data, int len) -{ - return h->read(h, data, len); -} -int usb_close(usb_handle *h) -{ - // nothing to do here - return 0; -} - -void usb_kick(usb_handle *h) -{ - h->kick(h); -} |