hbc/channel/wiiload/gecko.c

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2016-11-23 06:35:12 +01:00
/*
* Copyright (C) 2008 dhewg, #wiidev efnet
*
* this file is part of wiifuse
* http://wiibrew.org/index.php?title=Wiifuse
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#ifndef __WIN32__
#include <termios.h>
#else
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#endif
#include "gecko.h"
#ifndef O_SYNC
#define O_SYNC 0
#endif
#define FTDI_PACKET_SIZE 3968
#ifndef __WIN32__
static int fd_gecko = -1;
#else
static HANDLE handle_gecko = NULL;
#endif
#ifdef USE_LIBFTDI
#include "ftdi.h"
#define DEFAULT_FTDI_VID 0x0403
#define DEFAULT_FTDI_PID 0x6001
struct ftdi_context gFTDIContext;
int gUsingFTDI = 0;
#endif
int gecko_open(const char *dev) {
#ifdef USE_LIBFTDI
int err;
ftdi_init(&gFTDIContext);
if((err = ftdi_usb_open(&gFTDIContext, DEFAULT_FTDI_VID, DEFAULT_FTDI_PID) < 0)) {
fprintf(stderr, "ftdi_usb_open_desc failed: %d (%s)\n", err, ftdi_get_error_string(&gFTDIContext));
fprintf(stderr, "Perhaps you need to unload the FTDI kext with e.g.\n");
fprintf(stderr, "\tsudo kextunload -b com.FTDI.driver.FTDIUSBSerialDriver\n");
} else {
gUsingFTDI=1;
fprintf(stderr, "Found libftdi device\n");
goto done;
}
#endif
#ifndef __WIN32__
struct termios newtio;
fd_gecko = open(dev, O_RDWR | O_NOCTTY | O_SYNC | O_NONBLOCK);
if (fd_gecko == -1) {
perror("gecko_open");
return 1;
}
if (fcntl(fd_gecko, F_SETFL, 0)) {
perror("F_SETFL on serial port");
return 1;
}
if (tcgetattr(fd_gecko, &newtio)) {
perror("tcgetattr");
return 1;
}
cfmakeraw(&newtio);
newtio.c_cflag |= CRTSCTS | CS8 | CLOCAL | CREAD;
if (tcsetattr(fd_gecko, TCSANOW, &newtio)) {
perror("tcsetattr");
return 1;
}
#else
COMMTIMEOUTS timeouts;
handle_gecko = CreateFile(dev, GENERIC_READ | GENERIC_WRITE, 0, 0,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
GetCommTimeouts(handle_gecko, &timeouts);
timeouts.ReadIntervalTimeout = MAXDWORD;
timeouts.ReadTotalTimeoutMultiplier = 0;
timeouts.ReadTotalTimeoutConstant = 0;
timeouts.WriteTotalTimeoutMultiplier = 0;
timeouts.WriteTotalTimeoutConstant = 0;
if (!SetCommTimeouts(handle_gecko, &timeouts)) {
fprintf(stderr, "error setting timeouts on port\n");
return 1;
}
if (!SetCommMask(handle_gecko, 0)) {
fprintf(stderr, "error setting communications event mask\n");
return 1;
}
#endif
done:
gecko_flush();
return 0;
}
void gecko_close() {
#ifdef USE_LIBFTDI
if (gUsingFTDI) {
ftdi_usb_close(&gFTDIContext);
return;
}
#endif
#ifndef __WIN32__
if (fd_gecko > 0)
close(fd_gecko);
#else
CloseHandle(handle_gecko);
#endif
}
void gecko_flush() {
#ifdef USE_LIBFTDI
if (gUsingFTDI) {
ftdi_usb_purge_buffers(&gFTDIContext);
return;
}
#endif
#ifndef __WIN32__
tcflush(fd_gecko, TCIOFLUSH);
#else
PurgeComm(handle_gecko, PURGE_RXCLEAR | PURGE_TXCLEAR |
PURGE_TXABORT | PURGE_RXABORT);
#endif
}
int gecko_read(void *buf, size_t count) {
size_t left, chunk;
#ifndef __WIN32__
size_t res;
#else
DWORD res;
#endif
left = count;
while (left) {
chunk = left;
if (chunk > FTDI_PACKET_SIZE)
chunk = FTDI_PACKET_SIZE;
#ifdef USE_LIBFTDI
if (gUsingFTDI)
res = ftdi_read_data(&gFTDIContext, buf, chunk);
else
#endif
#ifndef __WIN32__
res = read(fd_gecko, buf, chunk);
if (res < 1) {
perror("gecko_read");
return 1;
}
#else
if (!ReadFile(handle_gecko, buf, chunk, &res, NULL)) {
fprintf(stderr, "gecko_read\n");
return 1;
}
#endif
left -= res;
buf += res;
}
return 0;
}
int gecko_write(const void *buf, size_t count) {
size_t left, chunk;
#ifndef __WIN32__
size_t res;
#else
DWORD res;
#endif
left = count;
while (left) {
chunk = left;
if (chunk > FTDI_PACKET_SIZE)
chunk = FTDI_PACKET_SIZE;
#ifdef USE_LIBFTDI
if (gUsingFTDI)
res = ftdi_write_data(&gFTDIContext, (unsigned char *)buf, chunk);
else
#endif
#ifndef __WIN32__
res = write(fd_gecko, buf, count);
if (res < 1) {
perror("gecko_write");
return 1;
}
#else
if (!WriteFile(handle_gecko, buf, chunk, &res, NULL)) {
fprintf (stderr, "gecko_write\n");
return 1;
}
#endif
left -= res;
buf += res;
#if !defined(__WIN32__) && !defined(USE_LIBFTDI)
// does this work with ftdi-sio?
if (tcdrain(fd_gecko)) {
perror ("gecko_drain");
return 1;
}
#endif
}
return 0;
}