/*
* avrdude - A Downloader/Uploader for AVR device programmers
* Copyright (C) 2003, 2004, 2006
* Eric B. Weddington <eweddington@cso.atmel.com>
*
* 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
*/
/* $Id: ppiwin.c,v 1.12 2007/01/24 21:07:54 joerg_wunsch Exp $ */
/*
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 (WIN32NATIVE)
#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 "serial.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)
{
fprintf(stderr, "%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 < 0)
{
fprintf(stderr, "%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;
}
#if !defined(HAVE_GETTIMEOFDAY)
struct timezone;
int gettimeofday(struct timeval *tv, struct timezone *unused){
// i've found only ms resolution, avrdude expects us
SYSTEMTIME st;
GetSystemTime(&st);
tv->tv_sec=(long)(st.wSecond+st.wMinute*60+st.wHour*3600);
tv->tv_usec=(long)(st.wMilliseconds*1000);
return 0;
}
#endif /* HAVE_GETTIMEOFDAY */
// #define W32USLEEPDBG
#ifdef W32USLEEPDBG
# define DEBUG_QueryPerformanceCounter(arg) QueryPerformanceCounter(arg)
# define DEBUG_DisplayTimingInfo(start, stop, freq, us, has_highperf) \
do { \
unsigned long dt; \
dt = (unsigned long)((stop.QuadPart - start.QuadPart) * 1000 * 1000 \
/ freq.QuadPart); \
fprintf(stderr, \
"hpt:%i usleep usec:%lu sleep msec:%lu timed usec:%lu\n", \
has_highperf, us, ((us + 999) / 1000), dt); \
} while (0)
#else
# define DEBUG_QueryPerformanceCounter(arg)
# define DEBUG_DisplayTimingInfo(start, stop, freq, us, has_highperf)
#endif
void usleep(unsigned long us)
{
int has_highperf;
LARGE_INTEGER freq,start,stop,loopend;
// workaround: although usleep is very precise if using
// high-performance-timers there are sometimes problems with
// verify - increasing the delay helps sometimes but not
// realiably. There must be some other problem. Maybe just
// with my test-hardware maybe in the code-base.
//// us=(unsigned long) (us*1.5);
has_highperf=QueryPerformanceFrequency(&freq);
//has_highperf=0; // debug
if (has_highperf) {
QueryPerformanceCounter(&start);
loopend.QuadPart=start.QuadPart+freq.QuadPart*us/(1000*1000);
do {
QueryPerformanceCounter(&stop);
} while (stop.QuadPart<=loopend.QuadPart);
}
else {
DEBUG_QueryPerformanceCounter(&start);
Sleep(1);
Sleep( (DWORD)((us+999)/1000) );
DEBUG_QueryPerformanceCounter(&stop);
}
DEBUG_DisplayTimingInfo(start, stop, freq, us, has_highperf);
}
#endif
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