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/*
* 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 <string.h>
#include <sysdeps.h>
#define TRACE_TAG TRACE_TRANSPORT
#include "adb.h"
#ifdef HAVE_BIG_ENDIAN
#define H4(x) (((x) & 0xFF000000) >> 24) | (((x) & 0x00FF0000) >> 8) | (((x) & 0x0000FF00) << 8) | (((x) & 0x000000FF) << 24)
static inline void fix_endians(apacket *p)
{
p->msg.command = H4(p->msg.command);
p->msg.arg0 = H4(p->msg.arg0);
p->msg.arg1 = H4(p->msg.arg1);
p->msg.data_length = H4(p->msg.data_length);
p->msg.data_check = H4(p->msg.data_check);
p->msg.magic = H4(p->msg.magic);
}
unsigned host_to_le32(unsigned n)
{
return H4(n);
}
#else
#define fix_endians(p) do {} while (0)
unsigned host_to_le32(unsigned n)
{
return n;
}
#endif
static int remote_read(apacket *p, atransport *t)
{
if(usb_read(t->usb, &p->msg, sizeof(amessage))){
D("remote usb: read terminated (message)\n");
return -1;
}
fix_endians(p);
if(check_header(p)) {
D("remote usb: check_header failed\n");
return -1;
}
if(p->msg.data_length) {
if(usb_read(t->usb, p->data, p->msg.data_length)){
D("remote usb: terminated (data)\n");
return -1;
}
}
if(check_data(p)) {
D("remote usb: check_data failed\n");
return -1;
}
return 0;
}
static int remote_write(apacket *p, atransport *t)
{
unsigned size = p->msg.data_length;
fix_endians(p);
if(usb_write(t->usb, &p->msg, sizeof(amessage))) {
D("remote usb: 1 - write terminated\n");
return -1;
}
if(p->msg.data_length == 0) return 0;
if(usb_write(t->usb, &p->data, size)) {
D("remote usb: 2 - write terminated\n");
return -1;
}
return 0;
}
static void remote_close(atransport *t)
{
usb_close(t->usb);
t->usb = 0;
}
static void remote_kick(atransport *t)
{
usb_kick(t->usb);
}
void init_usb_transport(atransport *t, usb_handle *h, int state)
{
D("transport: usb\n");
t->close = remote_close;
t->kick = remote_kick;
t->read_from_remote = remote_read;
t->write_to_remote = remote_write;
t->sync_token = 1;
t->connection_state = state;
t->type = kTransportUsb;
t->usb = h;
HOST = 0;
}
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