/*
* avrdude - A Downloader/Uploader for AVR device programmers
* Copyright (C) 2003, 2004, 2006
* Eric B. Weddington <eweddington@cso.atmel.com>
* Copyright 2008, Joerg Wunsch
*
* 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, see <http://www.gnu.org/licenses/>.
*/
/* $Id$ */
/*
This is the parallel port interface for Windows built using Cygwin.
In the ppi_* functions that access the parallel port registers,
fd = parallel port address
reg = register as defined in an enum in ppi.h. This must be converted
to a proper offset of the base address.
*/
#include "ac_cfg.h"
#if defined(HAVE_PARPORT) && defined(WIN32)
#define WIN32_LEAN_AND_MEAN
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <windows.h>
#include <sys/time.h>
#include <windows.h>
#include "avrdude.h"
#include "libavrdude.h"
#include "ppi.h"
#define DEVICE_LPT1 "lpt1"
#define DEVICE_LPT2 "lpt2"
#define DEVICE_LPT3 "lpt3"
#define DEVICE_MAX 3
typedef struct
{
const char *name;
int base_address;
} winpp;
static const winpp winports[DEVICE_MAX] =
{
{DEVICE_LPT1, 0x378},
{DEVICE_LPT2, 0x278},
{DEVICE_LPT3, 0x3BC},
};
/* FUNCTION PROTOTYPES */
static int winnt_pp_open(void);
static unsigned short port_get(union filedescriptor *fdp, int reg);
static unsigned char reg2offset(int reg);
static unsigned char inb(unsigned short port);
static void outb(unsigned char value, unsigned short port);
/* FUNCTION DEFINITIONS */
void ppi_open(char *port, union filedescriptor *fdp)
{
unsigned char i;
int fd;
fd = winnt_pp_open();
if(fd < 0)
{
avrdude_message(MSG_INFO, "%s: can't open device \"giveio\"\n\n", progname);
fdp->ifd = -1;
return;
}
/* Search the windows port names for a match */
fd = -1;
for(i = 0; i < DEVICE_MAX; i++)
{
if(strcmp(winports[i].name, port) == 0)
{
/* Set the file descriptor with the Windows parallel port base address. */
fd = winports[i].base_address;
break;
}
}
if(fd == -1)
{
/*
* Supplied port name did not match any of the pre-defined
* names. Try interpreting it as a numeric
* (hexadecimal/decimal/octal) address.
*/
char *cp;
fd = strtol(port, &cp, 0);
if(*port == '\0' || *cp != '\0')
{
avrdude_message(MSG_INFO, "%s: port name \"%s\" is neither lpt1/2/3 nor valid number\n",
progname, port);
fd = -1;
}
}
if(fd < 0)
{
avrdude_message(MSG_INFO, "%s: can't open device \"%s\"\n\n", progname, port);
fdp->ifd = -1;
return;
}
fdp->ifd = fd;
}
#define DRIVERNAME "\\\\.\\giveio"
static int winnt_pp_open(void)
{
// Only try to use giveio under Windows NT/2000/XP.
OSVERSIONINFO ver_info;
memset(&ver_info, 0, sizeof(ver_info));
ver_info.dwOSVersionInfoSize = sizeof(ver_info);
if(!GetVersionEx(&ver_info))
{
return(-1);
}
else if(ver_info.dwPlatformId == VER_PLATFORM_WIN32_NT)
{
HANDLE h = CreateFile(DRIVERNAME,
GENERIC_READ,
0,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL);
if(h == INVALID_HANDLE_VALUE)
{
return(-1);
}
/* Close immediately. The process now has the rights it needs. */
if(h != NULL)
{
CloseHandle(h);
}
}
return(0);
}
void ppi_close(union filedescriptor *fdp)
{
return;
}
/*
* set the indicated bit of the specified register.
*/
int ppi_set(union filedescriptor *fdp, int reg, int bit)
{
unsigned char v;
unsigned short port;
port = port_get(fdp, reg);
v = inb(port);
v |= bit;
outb(v, port);
return 0;
}
/*
* clear the indicated bit of the specified register.
*/
int ppi_clr(union filedescriptor *fdp, int reg, int bit)
{
unsigned char v;
unsigned short port;
port = port_get(fdp, reg);
v = inb(port);
v &= ~bit;
outb(v, port);
return 0;
}
/*
* get the indicated bit of the specified register.
*/
int ppi_get(union filedescriptor *fdp, int reg, int bit)
{
unsigned char v;
v = inb(port_get(fdp, reg));
v &= bit;
return(v);
}
/*
* toggle the indicated bit of the specified register.
*/
int ppi_toggle(union filedescriptor *fdp, int reg, int bit)
{
unsigned char v;
unsigned short port;
port = port_get(fdp, reg);
v = inb(port);
v ^= bit;
outb(v, port);
return 0;
}
/*
* get all bits of the specified register.
*/
int ppi_getall(union filedescriptor *fdp, int reg)
{
unsigned char v;
v = inb(port_get(fdp, reg));
return((int)v);
}
/*
* set all bits of the specified register to val.
*/
int ppi_setall(union filedescriptor *fdp, int reg, int val)
{
outb((unsigned char)val, port_get(fdp, reg));
return 0;
}
/* Calculate port address to access. */
static unsigned short port_get(union filedescriptor *fdp, int reg)
{
return((unsigned short)(fdp->ifd + reg2offset(reg)));
}
/* Convert register enum to offset of base address. */
static unsigned char reg2offset(int reg)
{
unsigned char offset = 0;
switch(reg)
{
case PPIDATA:
{
offset = 0;
break;
}
case PPISTATUS:
{
offset = 1;
break;
}
case PPICTRL:
{
offset = 2;
break;
}
}
return(offset);
}
/* Read in value from port. */
static unsigned char inb(unsigned short port)
{
unsigned char t;
asm volatile ("in %1, %0"
: "=a" (t)
: "d" (port));
return t;
}
/* Write value to port. */
static void outb(unsigned char value, unsigned short port)
{
asm volatile ("out %1, %0"
:
: "d" (port), "a" (value) );
return;
}
#endif