transport_usb.c revision 35237d135807af84bf9b0e5b8d7f8633e58db6f5
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include <stdio.h> 18#include <stdlib.h> 19#include <string.h> 20 21#include <sysdeps.h> 22 23#define TRACE_TAG TRACE_TRANSPORT 24#include "adb.h" 25 26/* XXX better define? */ 27#ifdef __ppc__ 28#define H4(x) (((x) & 0xFF000000) >> 24) | (((x) & 0x00FF0000) >> 8) | (((x) & 0x0000FF00) << 8) | (((x) & 0x000000FF) << 24) 29static inline void fix_endians(apacket *p) 30{ 31 p->msg.command = H4(p->msg.command); 32 p->msg.arg0 = H4(p->msg.arg0); 33 p->msg.arg1 = H4(p->msg.arg1); 34 p->msg.data_length = H4(p->msg.data_length); 35 p->msg.data_check = H4(p->msg.data_check); 36 p->msg.magic = H4(p->msg.magic); 37} 38unsigned host_to_le32(unsigned n) 39{ 40 return H4(n); 41} 42#else 43#define fix_endians(p) do {} while (0) 44unsigned host_to_le32(unsigned n) 45{ 46 return n; 47} 48#endif 49 50static int remote_read(apacket *p, atransport *t) 51{ 52 if(usb_read(t->usb, &p->msg, sizeof(amessage))){ 53 D("remote usb: read terminated (message)\n"); 54 return -1; 55 } 56 57 fix_endians(p); 58 59 if(check_header(p)) { 60 D("remote usb: check_header failed\n"); 61 return -1; 62 } 63 64 if(p->msg.data_length) { 65 if(usb_read(t->usb, p->data, p->msg.data_length)){ 66 D("remote usb: terminated (data)\n"); 67 return -1; 68 } 69 } 70 71 if(check_data(p)) { 72 D("remote usb: check_data failed\n"); 73 return -1; 74 } 75 76 return 0; 77} 78 79static int remote_write(apacket *p, atransport *t) 80{ 81 unsigned size = p->msg.data_length; 82 83 fix_endians(p); 84 85 if(usb_write(t->usb, &p->msg, sizeof(amessage))) { 86 D("remote usb: 1 - write terminated\n"); 87 return -1; 88 } 89 if(p->msg.data_length == 0) return 0; 90 if(usb_write(t->usb, &p->data, size)) { 91 D("remote usb: 2 - write terminated\n"); 92 return -1; 93 } 94 95 return 0; 96} 97 98static void remote_close(atransport *t) 99{ 100 usb_close(t->usb); 101 t->usb = 0; 102} 103 104static void remote_kick(atransport *t) 105{ 106 usb_kick(t->usb); 107} 108 109void init_usb_transport(atransport *t, usb_handle *h) 110{ 111 D("transport: usb\n"); 112 t->close = remote_close; 113 t->kick = remote_kick; 114 t->read_from_remote = remote_read; 115 t->write_to_remote = remote_write; 116 t->sync_token = 1; 117 t->connection_state = CS_OFFLINE; 118 t->type = kTransportUsb; 119 t->usb = h; 120 121#if ADB_HOST 122 HOST = 1; 123#else 124 HOST = 0; 125#endif 126} 127 128int is_adb_interface(int vid, int pid, int usb_class, int usb_subclass, int usb_protocol) 129{ 130 if (vid == VENDOR_ID_GOOGLE) { 131 /* might support adb */ 132 } else if (vid == VENDOR_ID_HTC) { 133 /* might support adb */ 134 } else { 135 /* not supported */ 136 return 0; 137 } 138 139 /* class:vendor (0xff) subclass:android (0x42) proto:adb (0x01) */ 140 if(usb_class == 0xff) { 141 if((usb_subclass == 0x42) && (usb_protocol == 0x01)) { 142 return 1; 143 } 144 } 145 146 return 0; 147} 148