/* Hey EMACS -*- win32-c -*- */
/* libcalccables - link cable library, a part of the CalcForge project
* Copyright (C) 2007 Romain Lievin
*
* Some parts from dhasetup.c source code
*
* 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.
*/
/*
This unit provides RwPorts access routines for NT-64 I/O port accesses.
*/
#include
#include
#include
#include "rwp.h"
#include "./rwp/rwports.h"
#define RWP_DRV_NAME "RwPorts"
#if defined(__WIN32__) || defined(_WIN64)
#if !defined(__MINGW32__) || defined(_WIN64)
/* Under MinGW, both dha.c and rwp.c are included into detect.c, so avoid the
duplicate definition. */
static void print_last_error(char *s)
{
LPTSTR lpMsgBuf;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR) & lpMsgBuf, 0, NULL);
lpMsgBuf[strlen(lpMsgBuf)-2] = '\0';
printf("%s (%i -> %s)\n", s, (int)GetLastError(), lpMsgBuf);
}
#endif
int rwp_detect(int* result)
{
HANDLE hDriver;
*result = 0;
hDriver = CreateFile("\\\\.\\RwPorts", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if(hDriver == INVALID_HANDLE_VALUE)
{
hDriver = CreateFile("\\\\.\\RwPorts", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if(hDriver != INVALID_HANDLE_VALUE)
{
CloseHandle(hDriver);
hDriver = INVALID_HANDLE_VALUE;
*result = 1;
}
}
else
{
CloseHandle(hDriver);
hDriver = INVALID_HANDLE_VALUE;
*result = 1;
}
printf(RWP_DRV_NAME "%sfound.\n", *result ? " " : " not ");
return 0;
}
static HANDLE hDriver = INVALID_HANDLE_VALUE;
int rwp_open(void)
{
hDriver = CreateFile("\\\\.\\RwPorts",
GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if(hDriver == INVALID_HANDLE_VALUE)
{
printf("Couldn't access " RWP_DRV_NAME " driver; Please ensure driver is installed/loaded.");
return -1;
}
return 0;
}
int rwp_close(void)
{
CloseHandle(hDriver);
hDriver = INVALID_HANDLE_VALUE;
return 0;
}
int rwp_read_byte(unsigned short address, unsigned char *data)
{
DWORD BytesReturned;
int iError;
int result = 0;
unsigned char buf[3];
*((unsigned short *)buf) = (unsigned short)address;
iError = DeviceIoControl(hDriver, IOCTL_RWPORTS_READ_BYTE, &buf, 2, &buf, 1, &BytesReturned, NULL);
if(!iError)
{
print_last_error("RwPorts: error occured in IOCTL_RWPORTS_READ_BYTE");
result = -1;
}
else
{
*data = buf[0];
//printf("I/O ports read at 0x%04x: %02x\n", address, *data);
}
return result;
}
int rwp_write_byte(unsigned short address, unsigned char data)
{
DWORD BytesReturned;
int iError;
int result = 0;
unsigned char buf[3];
*((unsigned short *)buf) = (unsigned short)address; buf[2] = data;
iError = DeviceIoControl(hDriver, IOCTL_RWPORTS_WRITE_BYTE, &buf, 3, &buf, 1, &BytesReturned, NULL);
if(!iError)
{
print_last_error("RwPorts: error occured in IOCTL_RWPORTS_WRITE_BYTE");
result = -1;
}
//else printf("I/O ports write at 0x%04x.\n", address);
return result;
}
#endif