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Sweden-Number/msdos/ppdev.c

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/*
* Parallel port device support
*
* Copyright 2001 Uwe Bonnes
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "windef.h"
#ifdef HAVE_PPDEV
#include <stdarg.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
#include <errno.h>
#include <linux/ppdev.h>
#include "winerror.h"
#include "winbase.h"
#include "winreg.h"
#include "winternl.h"
#include "miscemu.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(int);
typedef struct _PPDEVICESTRUCT{
int fd; /* NULL if device not available */
char *devicename;
int userbase; /* where wine thinks the ports are */
DWORD lastaccess; /* or NULL if release */
int timeout; /* time in second of inactivity to release the port */
} PPDeviceStruct;
static PPDeviceStruct PPDeviceList[5];
static int PPDeviceNum=0;
static int IO_pp_sort(const void *p1,const void *p2)
{
return ((PPDeviceStruct*)p1)->userbase - ((PPDeviceStruct*)p2)->userbase;
}
/* IO_pp_init
*
* Read the ppdev entries from wine.conf, open the device and check
* for necessary IOCTRL
* Report verbose about possible errors
*/
char IO_pp_init(void)
{
char name[80];
char buffer[256];
HKEY hkey;
int i,idx=0,fd,res,userbase,nports=0;
char * timeout;
char ret=1;
int lasterror;
OBJECT_ATTRIBUTES attr;
UNICODE_STRING nameW;
static const WCHAR configW[] = {'M','a','c','h','i','n','e','\\',
'S','o','f','t','w','a','r','e','\\',
'W','i','n','e','\\',
'W','i','n','e','\\',
'C','o','n','f','i','g','\\',
'p','p','d','e','v',0};
TRACE("\n");
attr.Length = sizeof(attr);
attr.RootDirectory = 0;
attr.ObjectName = &nameW;
attr.Attributes = 0;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
RtlInitUnicodeString( &nameW, configW );
if (NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr )) return 1;
for (;;)
{
DWORD total_size, len;
char temp[256];
KEY_VALUE_FULL_INFORMATION *info = (KEY_VALUE_FULL_INFORMATION *)temp;
if (NtEnumerateValueKey( hkey, idx, KeyValueFullInformation,
temp, sizeof(temp), &total_size )) break;
if (info->Type != REG_SZ) break;
RtlUnicodeToMultiByteN( name, sizeof(name)-1, &len, info->Name, info->NameLength );
name[len] = 0;
RtlUnicodeToMultiByteN( buffer, sizeof(buffer)-1, &len,
(WCHAR *)(temp + info->DataOffset), total_size-info->DataOffset );
buffer[len] = 0;
idx++;
if(nports >4)
{
FIXME("Make the PPDeviceList larger than 5 elements\n");
break;
}
TRACE("Device '%s' at virtual userbase '%s'\n", buffer,name);
timeout = strchr(buffer,',');
if (timeout)
*timeout++=0;
fd=open(buffer,O_RDWR);
lasterror=errno;
if (fd == -1)
{
WARN("Configuration: No access to %s Cause: %s\n",buffer,strerror(lasterror));
WARN("Rejecting configuration item\n");
if (lasterror == ENODEV)
ERR("Is the ppdev module loaded?\n");
continue;
}
userbase = strtol(name,(char **)NULL, 16);
if ( errno == ERANGE)
{
WARN("Configuration: Invalid base %s for %s\n",name,buffer);
WARN("Rejecting configuration item\n");
continue;
}
if (ioctl (fd,PPCLAIM,0))
{
ERR("PPCLAIM rejected %s\n",buffer);
ERR("Perhaps the device is already in use or non-existent\n");
continue;
}
if (nports > 0)
{
for (i=0; i<= nports; i++)
{
if (PPDeviceList[i].userbase == userbase)
{
WARN("Configuration: %s uses the same virtual ports as %s\n",
buffer,PPDeviceList[0].devicename);
WARN("Configuration: Rejecting configuration item\n");
userbase = 0;
break;
}
}
if (!userbase) continue;
}
/* Check for the minimum required IOCTLS */
if ((ioctl(fd,PPRDATA,&res))||
(ioctl(fd,PPRCONTROL,&res))||
(ioctl(fd,PPRCONTROL,&res)))
{
ERR("PPUSER IOCTL not available for parport device %s\n",buffer);
continue;
}
if (ioctl (fd,PPRELEASE,0))
{
ERR("PPRELEASE rejected %s\n",buffer);
ERR("Perhaps the device is already in use or non-existent\n");
continue;
}
PPDeviceList[nports].devicename = malloc(sizeof(buffer)+1);
if (!PPDeviceList[nports].devicename)
{
ERR("No (more) space for devicename\n");
break;
}
strcpy(PPDeviceList[nports].devicename,buffer);
PPDeviceList[nports].fd = fd;
PPDeviceList[nports].userbase = userbase;
PPDeviceList[nports].lastaccess=GetTickCount();
if (timeout)
{
PPDeviceList[nports].timeout = strtol(timeout,(char **)NULL, 10);
if (errno == ERANGE)
{
WARN("Configuration: Invalid timeout %s in configuration for %s, Setting to 0\n",
timeout,buffer);
PPDeviceList[nports].timeout = 0;
}
}
else
PPDeviceList[nports].timeout = 0;
nports++;
}
TRACE("found %d ports\n",nports);
NtClose( hkey );
PPDeviceNum= nports;
if (nports > 1)
/* sort in ascending order for userbase for faster access */
qsort (PPDeviceList,PPDeviceNum,sizeof(PPDeviceStruct),IO_pp_sort);
if (nports)
ret=0;
for (idx= 0;idx<PPDeviceNum; idx++)
TRACE("found device %s userbase %x fd %x timeout %d\n",
PPDeviceList[idx].devicename, PPDeviceList[idx].userbase,
PPDeviceList[idx].fd,PPDeviceList[idx].timeout);
/* FIXME:
register a timer callback perhaps every 30 seconds to release unused ports
Set lastaccess = 0 as indicator when port was released
*/
return ret;
}
/* IO_pp_do_access
*
* Do the actual IOCTL
* Return NULL on success
*/
static int IO_pp_do_access(int idx,int ppctl, DWORD* res)
{
int ret;
if (ioctl(PPDeviceList[idx].fd,PPCLAIM,0))
{
ERR("Can't reclaim device %s, PPUSER/PPDEV handling confused\n",
PPDeviceList[idx].devicename);
return 1;
}
ret = ioctl(PPDeviceList[idx].fd,ppctl,res);
if (ioctl(PPDeviceList[idx].fd,PPRELEASE,0))
{
ERR("Can't release device %s, PPUSER/PPDEV handling confused\n",
PPDeviceList[idx].devicename);
return 1;
}
return ret;
}
/* IO_pp_inp
*
* Check if we can satisfy the INP command with some of the configured PPDEV deviced
* Return NULL on success
*/
int IO_pp_inp(int port, DWORD* res)
{
int idx,j=0;
for (idx=0;idx<PPDeviceNum ;idx++)
{
j = port - PPDeviceList[idx].userbase;
if (j <0) return 1;
switch (j)
{
case 0:
return IO_pp_do_access(idx,PPRDATA,res);
case 1:
return IO_pp_do_access(idx,PPRSTATUS,res);
case 2:
return IO_pp_do_access(idx,PPRCONTROL,res);
case 0x400:
case 0x402:
case 3:
case 4:
case 0x401:
FIXME("Port 0x%x not accessible for reading with ppdev\n",port);
FIXME("If this is causing problems, try direct port access\n");
return 1;
default:
break;
}
}
return 1;
}
/* IO_pp_outp
*
* Check if we can satisfy the INP command with some of the configured PPDEV deviced
* Return NULL on success
*/
BOOL IO_pp_outp(int port, DWORD* res)
{
int idx,j=0;
for (idx=0;idx<PPDeviceNum ;idx++)
{
j = port - PPDeviceList[idx].userbase;
if (j <0) return 1;
switch (j)
{
case 0:
return IO_pp_do_access(idx,PPWDATA,res);
case 2:
return IO_pp_do_access(idx,PPWCONTROL,res);
case 1:
case 0x400:
case 0x402:
case 3:
case 4:
case 0x401:
FIXME("Port %d not accessible for writing with ppdev\n",port);
FIXME("If this is causing problems, try direct port access\n");
return 1;
default:
break;
}
}
return TRUE;
}
#else /* HAVE_PPDEV */
char IO_pp_init(void)
{
return 1;
}
int IO_pp_inp(int port, DWORD* res)
{
return 1;
}
BOOL IO_pp_outp(int port, DWORD* res)
{
return TRUE;
}
#endif /* HAVE_PPDEV */
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