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