121 lines
2.8 KiB
C
121 lines
2.8 KiB
C
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysdeps.h>
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#define TRACE_TAG TRACE_TRANSPORT
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#include "adb.h"
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#ifdef HAVE_BIG_ENDIAN
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#define H4(x) (((x) & 0xFF000000) >> 24) | (((x) & 0x00FF0000) >> 8) | (((x) & 0x0000FF00) << 8) | (((x) & 0x000000FF) << 24)
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static inline void fix_endians(apacket *p)
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{
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p->msg.command = H4(p->msg.command);
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p->msg.arg0 = H4(p->msg.arg0);
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p->msg.arg1 = H4(p->msg.arg1);
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p->msg.data_length = H4(p->msg.data_length);
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p->msg.data_check = H4(p->msg.data_check);
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p->msg.magic = H4(p->msg.magic);
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}
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unsigned host_to_le32(unsigned n)
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{
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return H4(n);
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}
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#else
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#define fix_endians(p) do {} while (0)
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unsigned host_to_le32(unsigned n)
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{
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return n;
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}
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#endif
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static int remote_read(apacket *p, atransport *t)
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{
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if(usb_read(t->usb, &p->msg, sizeof(amessage))){
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D("remote usb: read terminated (message)\n");
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return -1;
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}
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fix_endians(p);
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if(check_header(p)) {
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D("remote usb: check_header failed\n");
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return -1;
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}
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if(p->msg.data_length) {
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if(usb_read(t->usb, p->data, p->msg.data_length)){
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D("remote usb: terminated (data)\n");
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return -1;
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}
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}
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if(check_data(p)) {
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D("remote usb: check_data failed\n");
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return -1;
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}
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return 0;
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}
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static int remote_write(apacket *p, atransport *t)
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{
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unsigned size = p->msg.data_length;
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fix_endians(p);
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if(usb_write(t->usb, &p->msg, sizeof(amessage))) {
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D("remote usb: 1 - write terminated\n");
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return -1;
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}
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if(p->msg.data_length == 0) return 0;
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if(usb_write(t->usb, &p->data, size)) {
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D("remote usb: 2 - write terminated\n");
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return -1;
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}
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return 0;
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}
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static void remote_close(atransport *t)
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{
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usb_close(t->usb);
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t->usb = 0;
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}
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static void remote_kick(atransport *t)
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{
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usb_kick(t->usb);
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}
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void init_usb_transport(atransport *t, usb_handle *h, int state)
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{
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D("transport: usb\n");
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t->close = remote_close;
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t->kick = remote_kick;
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t->read_from_remote = remote_read;
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t->write_to_remote = remote_write;
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t->sync_token = 1;
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t->connection_state = state;
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t->type = kTransportUsb;
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t->usb = h;
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HOST = 0;
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}
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