int2f.c 34.8 KB
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/* -*- tab-width: 8; c-basic-offset: 4 -*- */
/*
 * DOS interrupt 2fh handler
 *
 *  Cdrom - device driver emulation - Audio features.
 *     Copyright (c) 1998 Petr Tomasek <tomasek@etf.cuni.cz>
 *     Copyright (c) 1999,2002 Eric Pouech
 *
 * 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 <string.h>
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#define NONAMELESSUNION
#define NONAMELESSSTRUCT
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#include "wine/winbase16.h"
#include "wine/debug.h"
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#include "ntstatus.h"
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#include "winioctl.h"
#include "ntddstor.h"
#include "ntddcdrm.h"
#include "dosexe.h"

WINE_DEFAULT_DEBUG_CHANNEL(int);

/* base WPROCS.DLL ordinal number for VxDs */
#define VXD_BASE 400

static void do_int2f_16( CONTEXT86 *context );
static void MSCDEX_Handler( CONTEXT86 *context );

/**********************************************************************
 *          DOSVM_Int2fHandler (WINEDOS16.147)
 *
 * Handler for int 2fh (multiplex).
 */
void WINAPI DOSVM_Int2fHandler( CONTEXT86 *context )
{
    TRACE("Subfunction 0x%X\n", AX_reg(context));

    switch(AH_reg(context))
    {
    case 0x10:
        SET_AL( context, 0xff ); /* share is installed */
        break;

    case 0x11:  /* Network Redirector / IFSFUNC */
        switch (LOBYTE(context->Eax))
        {
        case 0x00:  /* Install check */
            /* not installed */
            break;
        case 0x80:  /* Enhanced services - Install check */
            /* not installed */
            break;
        default:
           INT_BARF( context, 0x2f );
            break;
        }
        break;

    case 0x12:
        switch (LOBYTE(context->Eax))
        {
        case 0x2e: /* get or set DOS error table address */
            switch (DL_reg(context))
            {
            /* Four tables: even commands are 'get', odd are 'set' */
            /* DOS 5.0+ ignores "set" commands */
            case 0x01:
            case 0x03:
            case 0x05:
            case 0x07:
            case 0x09:
                break;
            /* Instead of having a message table in DOS-space, */
            /* we can use a special case for MS-DOS to force   */
            /* the secondary interface.                               */
            case 0x00:
            case 0x02:
            case 0x04:
            case 0x06:
                context->SegEs = 0x0001;
                SET_DI( context, 0x0000 );
                break;
            case 0x08:
                FIXME("No real-mode handler for errors yet! (bye!)\n");
                break;
            default:
                INT_BARF(context, 0x2f);
            }
            break;
        default:
           INT_BARF(context, 0x2f);
        }
        break;

    case 0x15: /* mscdex */
        MSCDEX_Handler(context);
        break;

    case 0x16:
        do_int2f_16( context );
        break;

    case 0x1a: /* ANSI.SYS / AVATAR.SYS Install Check */
        /* Not supported yet, do nothing */
        break;

    case 0x43:
#if 1
       switch (LOBYTE(context->Eax))
       {
       case 0x00:   /* XMS v2+ installation check */
           WARN("XMS is not fully implemented\n");
           SET_AL( context, 0x80 );
           break;
       case 0x10:   /* XMS v2+ get driver address */
       {
            context->SegEs = DOSVM_dpmi_segments->xms_seg;
            SET_BX( context, 0 );
            break;
       }
       default:
           INT_BARF( context, 0x2f );
       }
#else
       FIXME("check for XMS (not supported)\n");
       SET_AL( context, 0x42 ); /* != 0x80 */
#endif
       break;

    case 0x45:
       switch (LOBYTE(context->Eax))
       {
       case 0x00:
       case 0x01:
       case 0x02:
       case 0x03:
       case 0x04:
       case 0x05:
       case 0x06:
       case 0x07:
       case 0x08:
           /* Microsoft Profiler - not installed */
           break;
       default:
            INT_BARF( context, 0x2f );
       }
       break;

    case 0x4a:
        switch(LOBYTE(context->Eax))
        {
       case 0x10:  /* smartdrv */
           break;  /* not installed */
        case 0x11:  /* dblspace */
            break;  /* not installed */
        case 0x12:  /* realtime compression interface */
            break;  /* not installed */
        case 0x32:  /* patch IO.SYS (???) */
            break;  /* we have no IO.SYS, so we can't patch it :-/ */
        default:
            INT_BARF( context, 0x2f );
        }
        break;
    case 0x4b:
       switch(LOBYTE(context->Eax))
       {
       case 0x01:
       case 0x02:
       case 0x03:
       case 0x04:
       case 0x05:
           FIXME("Task Switcher - not implemented\n");
           break;
       default:
           INT_BARF( context, 0x2f );
       }
       break;
    case 0x56:  /* INTERLNK */
       switch(LOBYTE(context->Eax))
       {
       case 0x01:  /* check if redirected drive */
           SET_AL( context, 0 ); /* not redirected */
           break;
       default:
           INT_BARF( context, 0x2f );
       }
       break;
    case 0x7a:  /* NOVELL NetWare */
        switch (LOBYTE(context->Eax))
        {
       case 0x0:  /* Low-level Netware installation check AL=0 not installed.*/
            SET_AL( context, 0 );
            break;
        case 0x20:  /* Get VLM Call Address */
            /* return nothing -> NetWare not installed */
            break;
        default:
           INT_BARF( context, 0x2f );
            break;
        }
        break;
    case 0xb7:  /* append */
        SET_AL( context, 0 ); /* not installed */
        break;
    case 0xb8:  /* network */
        switch (LOBYTE(context->Eax))
        {
        case 0x00:  /* Install check */
            /* not installed */
            break;
        default:
           INT_BARF( context, 0x2f );
            break;
        }
        break;
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    case 0xbc:
	if (AL_reg(context) == 0x00 && BX_reg(context) == 0x3f3f) {
	    /* MVSOUND.SYS - Install check: not installed */
	} else { 
	    INT_BARF( context, 0x2f );
	}
       break;
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    case 0xbd:  /* some Novell network install check ??? */
        SET_AX( context, 0xa5a5 ); /* pretend to have Novell IPX installed */
       break;
    case 0xbf:  /* REDIRIFS.EXE */
        switch (LOBYTE(context->Eax))
        {
        case 0x00:  /* Install check */
            /* not installed */
            break;
        default:
           INT_BARF( context, 0x2f );
            break;
        }
        break;
    case 0xd2:
       switch(LOBYTE(context->Eax))
       {
       case 0x01: /* Quarterdeck RPCI - QEMM/QRAM - PCL-838.EXE functions */
           if(BX_reg(context) == 0x5145 && CX_reg(context) == 0x4D4D
             && DX_reg(context) == 0x3432)
               TRACE("Check for QEMM v5.0+ (not installed)\n");
               break;
       default:
           INT_BARF( context, 0x2f );
           break;
       }
       break;
    case 0xd7:  /* Banyan Vines */
        switch (LOBYTE(context->Eax))
        {
        case 0x01:  /* Install check - Get Int Number */
            /* not installed */
            break;
        default:
           INT_BARF( context, 0x2f );
            break;
        }
        break;
    case 0xde:
       switch(LOBYTE(context->Eax))
       {
       case 0x01:   /* Quarterdeck QDPMI.SYS - DESQview */
           if(BX_reg(context) == 0x4450 && CX_reg(context) == 0x4d49
             && DX_reg(context) == 0x8f4f)
               TRACE("Check for QDPMI.SYS (not installed)\n");
               break;
       default:
           INT_BARF( context, 0x2f );
           break;
       }
       break;
    case 0xfa:  /* Watcom debugger check, returns 0x666 if installed */
        break;
    default:
        INT_BARF( context, 0x2f );
        break;
    }
}


/**********************************************************************
 *         do_int2f_16
 */
static void do_int2f_16( CONTEXT86 *context )
{
    DWORD addr;

    switch(LOBYTE(context->Eax))
    {
    case 0x00:  /* Windows enhanced mode installation check */
        SET_AX( context, (GetWinFlags16() & WF_ENHANCED) ? LOWORD(GetVersion16()) : 0 );
        break;

    case 0x0a:  /* Get Windows version and type */
        SET_AX( context, 0 );
        SET_BX( context, (LOWORD(GetVersion16()) << 8) | (LOWORD(GetVersion16()) >> 8) );
        SET_CX( context, (GetWinFlags16() & WF_ENHANCED) ? 3 : 2 );
        break;

    case 0x0b:  /* Identify Windows-aware TSRs */
        /* we don't have any pre-Windows TSRs */
        break;

    case 0x11:  /* Get Shell Parameters - (SHELL= in CONFIG.SYS) */
        /* We can mock this up. But not today... */
        FIXME("Get Shell Parameters\n");
        break;

    case 0x80:  /* Release time-slice */
       /* Linux sched_yield() still keeps burning CPU cycles
        * if the current process is the only one in highest priority list
        * (as Linux will immediately return to this process to waste
        * more CPU cycles), so sched_yield() is essentially useless for us
        * (poor API, if you ask me: its return code should indicate
        * whether other processes did run in between, in order for us
        * to be able to decide whether to do an additional Sleep() or not...)
        * Thus we better unconditionally use a well-balanced Sleep()
        * instead to really make sure the process calling int 0x2f/0x1680
        * *doesn't* use 100% CPU...
        */
       Sleep(55); /* just wait 55ms (one "timer tick") for now. */
       SET_AL( context, 0 );
        break;

    case 0x81: /* Begin critical section.  */
        /* FIXME? */
        break;

    case 0x82: /* End critical section.  */
        /* FIXME? */
        break;

    case 0x83:  /* Return Current Virtual Machine ID */
        /* Virtual Machines are usually created/destroyed when Windows runs
         * DOS programs. Since we never do, we are always in the System VM.
         * According to Ralf Brown's Interrupt List, never return 0. But it
         * seems to work okay (returning 0), just to be sure we return 1.
         */
       SET_BX( context, 1 ); /* VM 1 is probably the System VM */
       break;

    case 0x84:  /* Get device API entry point */
        {
            HMODULE16 mod = GetModuleHandle16("wprocs");
            if (mod < 32) mod = LoadLibrary16( "wprocs" );
            addr = (DWORD)GetProcAddress16( mod, (LPCSTR)(VXD_BASE + BX_reg(context)) );
            if (!addr)  /* not supported */
                ERR("Accessing unknown VxD %04x - Expect a failure now.\n", BX_reg(context) );
            context->SegEs = SELECTOROF(addr);
            SET_DI( context, OFFSETOF(addr) );
        }
       break;

    case 0x86:  /* DPMI detect mode */
        SET_AX( context, 0 );  /* Running under DPMI */
        break;

    case 0x87: /* DPMI installation check */
        {
           SYSTEM_INFO si;
           GetSystemInfo(&si);
           SET_AX( context, 0x0000 ); /* DPMI Installed */
            SET_BX( context, 0x0001 ); /* 32bits available */
            SET_CL( context, si.wProcessorLevel );
            SET_DX( context, 0x005a ); /* DPMI major/minor 0.90 */
            SET_SI( context, 0 );      /* # of para. of DOS extended private data */
            context->SegEs = DOSVM_dpmi_segments->dpmi_seg;
            SET_DI( context, 0 );      /* ES:DI is DPMI switch entry point */
            break;
        }
    case 0x8a:  /* DPMI get vendor-specific API entry point. */
       /* The 1.0 specs say this should work with all 0.9 hosts.  */
       break;

    default:
        INT_BARF( context, 0x2f );
    }
}

/* FIXME: this macro may have to be changed on architectures where <size> reads/writes
 * must be <size> aligned
 * <size> could be WORD, DWORD...
 * in this case, we would need two macros, one for read, the other one for write
 * Note: PTR_AT can be used as an l-value
 */
#define        PTR_AT(_ptr, _ofs, _typ)        (*((_typ*)(((char*)_ptr)+(_ofs))))

/* Use #if 1 if you want full int 2f debug... normal users can leave it at 0 */
#if 0
/**********************************************************************
 *         MSCDEX_Dump                                 [internal]
 *
 * Dumps mscdex requests to int debug channel.
 */
static void    MSCDEX_Dump(char* pfx, BYTE* req, int dorealmode)
{
    int        i;
    BYTE       buf[2048];
    BYTE*      ptr;
    BYTE*      ios;

    ptr = buf;
    ptr += sprintf(ptr, "%s\tCommand => ", pfx);
    for (i = 0; i < req[0]; i++) {
       ptr += sprintf(ptr, "%02x ", req[i]);
    }

    switch (req[2]) {
    case 3:
    case 12:
       ptr += sprintf(ptr, "\n\t\t\t\tIO_struct => ");
       ios = (dorealmode) ? PTR_REAL_TO_LIN( PTR_AT(req, 16, WORD), PTR_AT(req, 14, WORD)) :
                             MapSL(MAKESEGPTR(PTR_AT(req, 16, WORD), PTR_AT(req, 14, WORD)));

       for (i = 0; i < PTR_AT(req, 18, WORD); i++) {
           ptr += sprintf(ptr, "%02x ", ios[i]);
           if ((i & 0x1F) == 0x1F) {
               *ptr++ = '\n';
               *ptr = 0;
           }
       }
       break;
    }
    TRACE("%s\n", buf);
}
#else
#define MSCDEX_Dump(pfx, req, drm)
#endif

#define CDFRAMES_PERSEC                 75
#define CDFRAMES_PERMIN                 (CDFRAMES_PERSEC * 60)
#define FRAME_OF_ADDR(a)        ((a)[1] * CDFRAMES_PERMIN + (a)[2] * CDFRAMES_PERSEC + (a)[3])
#define FRAME_OF_TOC(toc, idx)  FRAME_OF_ADDR((toc).TrackData[idx - (toc).FirstTrack].Address)
#define CTRL_OF_TOC(toc, idx)   (((toc).TrackData[idx - (toc).FirstTrack].Control << 4) | \
                                  (toc).TrackData[idx - (toc).FirstTrack].Adr)

static void    MSCDEX_StoreMSF(DWORD frame, BYTE* val)
{
    val[3] = 0;        /* zero */
    val[2] = frame / CDFRAMES_PERMIN; /* minutes */
    val[1] = (frame / CDFRAMES_PERSEC) % 60; /* seconds */
    val[0] = frame % CDFRAMES_PERSEC; /* frames */
}

static int is_cdrom( int drive)
{
    char root[] = "A:\\";
    root[0] += drive;
    return (GetDriveTypeA(root) == DRIVE_CDROM);
}

static void MSCDEX_Handler(CONTEXT86* context)
{
    int        drive, count;
    char*      p;

    switch (LOBYTE(context->Eax)) {
    case 0x00: /* Installation check */
       /* Count the number of contiguous CDROM drives
        */
       for (drive = count = 0; drive < 26; drive++) {
           if (is_cdrom(drive)) {
               while (is_cdrom(drive + count)) count++;
               break;
           }
       }
       TRACE("Installation check: %d cdroms, starting at %d\n", count, drive);
       SET_BX( context, count );
       SET_CX( context, (drive < 26) ? drive : 0 );
       break;

    case 0x0B: /* drive check */
       SET_AX( context, is_cdrom(CX_reg(context)) );
       SET_BX( context, 0xADAD );
       break;

    case 0x0C: /* get version */
       SET_BX( context, 0x020a );
       TRACE("Version number => %04x\n", BX_reg(context));
       break;

    case 0x0D: /* get drive letters */
       p = CTX_SEG_OFF_TO_LIN(context, context->SegEs, context->Ebx);
       memset(p, 0, 26);
       for (drive = 0; drive < 26; drive++) {
           if (is_cdrom(drive)) *p++ = drive;
       }
       TRACE("Get drive letters\n");
       break;

    case 0x10: /* direct driver access */
       {
           BYTE*       driver_request;
           BYTE*       io_stru;
           BYTE        Error = 255; /* No Error */
           int         dorealmode = ISV86(context);
            char        devName[] = "\\\\.\\@:";
           HANDLE      h;
            CDROM_TOC                   toc;
            CDROM_SUB_Q_DATA_FORMAT     fmt;
            SUB_Q_CHANNEL_DATA          data;
            DWORD                       br;
            DWORD                       present = TRUE;

           driver_request = CTX_SEG_OFF_TO_LIN(context, context->SegEs, context->Ebx);

           if (!driver_request) {
               /* FIXME - to be deleted ?? */
               ERR("ES:BX==0 ! SEGFAULT ?\n");
               ERR("-->BX=0x%04x, ES=0x%04lx, DS=0x%04lx, CX=0x%04x\n",
                   BX_reg(context), context->SegEs, context->SegDs, CX_reg(context));
               driver_request[4] |= 0x80;
               driver_request[3] = 5;  /* bad request length */
               return;
           }
           /* FIXME
             * the following tests are wrong because lots of functions don't require the
             * tray to be closed with a CD inside
            */
           TRACE("CDROM device driver -> command <%d>\n", (unsigned char)driver_request[2]);

           if (!is_cdrom(CX_reg(context))) {
               WARN("Request made doesn't match a CD ROM drive (%d)\n", CX_reg(context));
               driver_request[4] |= 0x80;
               driver_request[3] = 1;  /* unknown unit */
               return;
           }

           MSCDEX_Dump("Beg", driver_request, dorealmode);

           /* set status to 0 */
           PTR_AT(driver_request, 3, WORD) = 0;
            devName[4] = 'A' + CX_reg(context);
            h = CreateFileA(devName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
            if (!h) {
               WARN("Couldn't open cdrom handle\n");
               driver_request[4] |= 0x80;
               driver_request[3] = 1;  /* unknown unit */
               return;
           }

            fmt.Format = IOCTL_CDROM_CURRENT_POSITION;
            if (!DeviceIoControl(h, IOCTL_CDROM_READ_TOC, NULL, 0, &toc, sizeof(toc), &br, NULL) ||
                !DeviceIoControl(h, IOCTL_CDROM_READ_Q_CHANNEL, &fmt, sizeof(fmt),
                                 &data, sizeof(data), &br, NULL)) {
                if (GetLastError() == STATUS_NO_MEDIA_IN_DEVICE)
                {
                    if (driver_request[2] != 6 && driver_request[2] != 15)
                    {
                        driver_request[4] |= 0x80;
                        driver_request[3] = 2; /* drive not ready */
                        CloseHandle(h);
                        return;
                    }
                    present = FALSE;
                }
                else
                {
                    driver_request[4] |= 0x80;
                    driver_request[3] = 1;     /* unknown unit */
                    CloseHandle(h);
                    return;
                }
            }

           switch (driver_request[2]) {
           case 3:
               io_stru = (dorealmode) ?
                    PTR_REAL_TO_LIN( PTR_AT(driver_request, 16, WORD), PTR_AT(driver_request, 14, WORD) ) :
                       MapSL( MAKESEGPTR(PTR_AT(driver_request, 16, WORD), PTR_AT(driver_request, 14, WORD)));

               TRACE(" --> IOCTL INPUT <%d>\n", io_stru[0]);
               switch (io_stru[0]) {
#if 0
               case 0: /* Get device Header */
                   {
                       static  LPSTR ptr = 0;
                       if (ptr == 0)   {
                           ptr = SEGPTR_ALLOC(22);
                           PTR_AT(ptr,  0, DWORD) = ~1;        /* Next Device Driver */
                           PTR_AT(ptr,  4,  WORD) = 0xC800;    /* Device attributes  */
                           PTR_AT(ptr,  6,  WORD) = 0x1234;    /* Pointer to device strategy routine: FIXME */
                           PTR_AT(ptr,  8,  WORD) = 0x3142;    /* Pointer to device interrupt routine: FIXME */
                           PTR_AT(ptr, 10,  char) = 'W';       /* 8-byte character device name field */
                           PTR_AT(ptr, 11,  char) = 'I';
                           PTR_AT(ptr, 12,  char) = 'N';
                           PTR_AT(ptr, 13,  char) = 'E';
                           PTR_AT(ptr, 14,  char) = '_';
                           PTR_AT(ptr, 15,  char) = 'C';
                           PTR_AT(ptr, 16,  char) = 'D';
                           PTR_AT(ptr, 17,  char) = '_';
                           PTR_AT(ptr, 18,  WORD) = 0;         /* Reserved (must be zero) */
                           PTR_AT(ptr, 20,  BYTE) = 0;         /* Drive letter (must be zero) */
                           PTR_AT(ptr, 21,  BYTE) = 1;         /* Number of units supported (one or more) FIXME*/
                       }
                       PTR_AT(io_stru, DWORD,  0) = SEGPTR_GET(ptr);
                   }
                   break;
#endif

               case 1: /* location of head */
                   switch (io_stru[1]) {
                   case 0:
                       PTR_AT(io_stru, 2, DWORD) =
                            FRAME_OF_ADDR(data.CurrentPosition.AbsoluteAddress);
                       break;
                   case 1:
                       MSCDEX_StoreMSF(FRAME_OF_ADDR(data.CurrentPosition.AbsoluteAddress),
                                        io_stru + 2);
                       break;
                   default:
                       ERR("CD-ROM driver: unsupported addressing mode !!\n");
                       Error = 0x0c;
                   }
                   TRACE(" ----> HEAD LOCATION <%ld>\n", PTR_AT(io_stru, 2, DWORD));
                   break;

               case 4: /* Audio channel info */
                   io_stru[1] = 0;
                   io_stru[2] = 0xff;
                   io_stru[3] = 1;
                   io_stru[4] = 0xff;
                   io_stru[5] = 2;
                   io_stru[6] = 0;
                   io_stru[7] = 3;
                   io_stru[8] = 0;
                   TRACE(" ----> AUDIO CHANNEL INFO\n");
                   break;

               case 6: /* device status */
                   PTR_AT(io_stru, 1, DWORD) = 0x00000290;
                   /* 290 =>
                    * 1        Supports HSG and Red Book addressing modes
                    * 0        Supports audio channel manipulation
                    *
                    * 1        Supports prefetching requests
                    * 0        Reserved
                    * 0        No interleaving
                    * 1        Data read and plays audio/video tracks
                    *
                    * 0        Read only
                    * 0        Supports only cooked reading
                    * 0        Door locked
                    * 0        see below (Door closed/opened)
                    */
                   if (!present) PTR_AT(io_stru, 1, DWORD) |= 1;
                   TRACE(" ----> DEVICE STATUS <0x%08lx>\n", PTR_AT(io_stru, 1, DWORD));
                   break;

               case 8: /* Volume size */
                   PTR_AT(io_stru, 1, DWORD) = FRAME_OF_TOC(toc, toc.LastTrack + 1) -
                        FRAME_OF_TOC(toc, toc.FirstTrack) - 1;
                   TRACE(" ----> VOLUME SIZE <%ld>\n", PTR_AT(io_stru, 1, DWORD));
                   break;

               case 9: /* media changed ? */
                   /* answers don't know... -1/1 for yes/no would be better */
                   io_stru[1] = 0; /* FIXME? 1? */
                   TRACE(" ----> MEDIA CHANGED <%d>\n", io_stru[1]);
                   break;

               case 10: /* audio disk info */
                   io_stru[1] = toc.FirstTrack; /* starting track of the disc */
                   io_stru[2] = toc.LastTrack;  /* ending track */
                   MSCDEX_StoreMSF(FRAME_OF_TOC(toc, toc.LastTrack + 1) -
                                    FRAME_OF_TOC(toc, toc.FirstTrack) - 1, io_stru + 3);

                   TRACE(" ----> AUDIO DISK INFO <%d-%d/%08lx>\n",
                         io_stru[1], io_stru[2], PTR_AT(io_stru, 3, DWORD));
                   break;

               case 11: /* audio track info */
                   if (io_stru[1] >= toc.FirstTrack && io_stru[1] <= toc.LastTrack) {
                       MSCDEX_StoreMSF(FRAME_OF_TOC(toc, io_stru[1]), io_stru + 2);
                       /* starting point if the track */
                       io_stru[6] = CTRL_OF_TOC(toc, io_stru[1]);
                   } else {
                       PTR_AT(io_stru, 2, DWORD) = 0;
                       io_stru[6] = 0;
                   }
                   TRACE(" ----> AUDIO TRACK INFO[%d] = [%08lx:%d]\n",
                         io_stru[1], PTR_AT(io_stru, 2, DWORD), io_stru[6]);
                   break;

               case 12: /* get Q-Channel info */
                   io_stru[1] = CTRL_OF_TOC(toc, data.CurrentPosition.TrackNumber);
                   io_stru[2] = data.CurrentPosition.TrackNumber;
                   io_stru[3] = 0; /* FIXME ?? */

                   /* why the heck did MS use another format for 0MSF information... sigh */
                   {
                       BYTE    bTmp[4];

                       MSCDEX_StoreMSF(FRAME_OF_ADDR(data.CurrentPosition.TrackRelativeAddress), bTmp);
                       io_stru[ 4] = bTmp[2];
                       io_stru[ 5] = bTmp[1];
                       io_stru[ 6] = bTmp[0];
                       io_stru[ 7] = 0;

                       MSCDEX_StoreMSF(FRAME_OF_ADDR(data.CurrentPosition.AbsoluteAddress), bTmp);
                       io_stru[ 8] = bTmp[2];
                       io_stru[ 9] = bTmp[1];
                       io_stru[10] = bTmp[0];
                       io_stru[11] = 0;
                   }
                   TRACE("Q-Channel info: Ctrl/adr=%02x TNO=%02x X=%02x rtt=%02x:%02x:%02x rtd=%02x:%02x:%02x (cf=%08x, tp=%08x)\n",
                         io_stru[ 1], io_stru[ 2], io_stru[ 3],
                         io_stru[ 4], io_stru[ 5], io_stru[ 6],
                         io_stru[ 8], io_stru[ 9], io_stru[10],
                         FRAME_OF_ADDR(data.CurrentPosition.AbsoluteAddress),
                          FRAME_OF_TOC(toc, data.CurrentPosition.TrackNumber));
                   break;

               case 15: /* Audio status info */
                   /* !!!! FIXME FIXME FIXME !! */
                   PTR_AT(io_stru, 1,  WORD) = 2 | ((data.CurrentPosition.Header.AudioStatus == AUDIO_STATUS_PAUSED) ? 1 : 0);
                   if (!present) {
                       PTR_AT(io_stru, 3, DWORD) = 0;
                       PTR_AT(io_stru, 7, DWORD) = 0;
                   } else {
                       PTR_AT(io_stru, 3, DWORD) = FRAME_OF_TOC(toc, toc.FirstTrack);
                       PTR_AT(io_stru, 7, DWORD) = FRAME_OF_TOC(toc, toc.LastTrack + 1);
                   }
                   TRACE("Audio status info: status=%04x startLoc=%ld endLoc=%ld\n",
                         PTR_AT(io_stru, 1, WORD), PTR_AT(io_stru, 3, DWORD), PTR_AT(io_stru, 7, DWORD));
                   break;

               default:
                   FIXME("IOCTL INPUT: Unimplemented <%d>!!\n", io_stru[0]);
                   Error = 0x0c;
                   break;
               }
               break;

           case 12:
               io_stru = (dorealmode) ?
                   PTR_REAL_TO_LIN( PTR_AT(driver_request, 16, WORD), PTR_AT(driver_request, 14, WORD)) :
                       MapSL( MAKESEGPTR(PTR_AT(driver_request, 16, WORD), PTR_AT(driver_request, 14, WORD)));

               TRACE(" --> IOCTL OUTPUT <%d>\n", io_stru[0]);
               switch (io_stru[0]) {
               case 0: /* eject */
                    DeviceIoControl(h, IOCTL_STORAGE_EJECT_MEDIA, NULL, 0, NULL, 0, &br, NULL);
                   TRACE(" ----> EJECT\n");
                   break;
               case 2: /* reset drive */
                   DeviceIoControl(h, IOCTL_STORAGE_RESET_DEVICE, NULL, 0, NULL, 0, &br, NULL);
                   TRACE(" ----> RESET\n");
                   break;
               case 3: /* Audio Channel Control */
                   FIXME(" ----> AUDIO CHANNEL CONTROL (NIY)\n");
                   break;
               case 5: /* close tray */
                    DeviceIoControl(h, IOCTL_STORAGE_LOAD_MEDIA, NULL, 0, NULL, 0, &br, NULL);
                   TRACE(" ----> CLOSE TRAY\n");
                   break;
               default:
                   FIXME(" IOCTL OUTPUT: Unimplemented <%d>!!\n", io_stru[0]);
                   Error = 0x0c;
                   break;
               }
               break;

            case 128: /* read long */
                {
                    LPVOID              dst = MapSL(MAKESEGPTR(PTR_AT(driver_request, 16, WORD),
                                                               PTR_AT(driver_request, 14, WORD)));
                    DWORD               at = PTR_AT(driver_request, 20, DWORD);
                    WORD                num = PTR_AT(driver_request, 18, WORD);
                    RAW_READ_INFO       rri;

                   switch (driver_request[13]) {
                   case 1: /* Red book addressing mode = 0:m:s:f */
                       /* FIXME : frame <=> msf conversion routines could be shared
                        * between mscdex and mcicda
                        */
                       at = LOBYTE(HIWORD(at)) * CDFRAMES_PERMIN +
                           HIBYTE(LOWORD(at)) * CDFRAMES_PERSEC +
                           LOBYTE(LOWORD(at));
                       /* fall through */
                   case 0: /* HSG addressing mode */
                        switch (PTR_AT(driver_request, 24, BYTE))
                        {
                        case 0: /* cooked */
                            ReadFile(h, dst, num * 2048, &br, NULL);
                            break;
                        case 1:
                            /* FIXME: computation is wrong */
808 809
                            rri.DiskOffset.u.HighPart = 0;
                            rri.DiskOffset.u.LowPart = at << 11;
810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946
                            rri.TrackMode = YellowMode2;
                            rri.SectorCount = num;
                            DeviceIoControl(h, IOCTL_CDROM_RAW_READ, &rri, sizeof(rri),
                                            dst, num * 2352, &br, NULL);
                       break;
                        default:
                            ERR("Unsupported read mode !!\n");
                            Error = 0x0c;
                            break;
                        }
                        break;
                   default:
                       ERR("Unsupported address mode !!\n");
                       Error = 0x0c;
                       break;
                   }
                }
                break;

           case 131: /* seek */
               {
                   DWORD                       at;
                    CDROM_SEEK_AUDIO_MSF        seek;

                   at = PTR_AT(driver_request, 20, DWORD);

                   TRACE(" --> SEEK AUDIO mode :<0x%02X>, [%ld]\n",
                         (BYTE)driver_request[13], at);

                   switch (driver_request[13]) {
                   case 1: /* Red book addressing mode = 0:m:s:f */
                       /* FIXME : frame <=> msf conversion routines could be shared
                        * between mscdex and mcicda
                        */
                       at = LOBYTE(HIWORD(at)) * CDFRAMES_PERMIN +
                           HIBYTE(LOWORD(at)) * CDFRAMES_PERSEC +
                           LOBYTE(LOWORD(at));
                       /* fall through */
                   case 0: /* HSG addressing mode */
                        seek.M = at / CDFRAMES_PERMIN;
                        seek.S = (at / CDFRAMES_PERSEC) % 60;
                        seek.F = at % CDFRAMES_PERSEC;
                        DeviceIoControl(h, IOCTL_CDROM_SEEK_AUDIO_MSF, &seek, sizeof(seek),
                                        NULL, 0, &br, NULL);
                       break;
                   default:
                       ERR("Unsupported address mode !!\n");
                       Error = 0x0c;
                       break;
                   }
               }
               break;

           case 132: /* play */
               {
                   DWORD                       beg, end;
                    CDROM_PLAY_AUDIO_MSF        play;

                   beg = end = PTR_AT(driver_request, 14, DWORD);
                   end += PTR_AT(driver_request, 18, DWORD);

                   TRACE(" --> PLAY AUDIO mode :<0x%02X>, [%ld-%ld]\n",
                         (BYTE)driver_request[13], beg, end);

                   switch (driver_request[13]) {
                   case 1:
                       /* Red book addressing mode = 0:m:s:f */
                       /* FIXME : frame <=> msf conversion routines could be shared
                        * between mscdex and mcicda
                        */
                       beg = LOBYTE(LOWORD(beg)) * CDFRAMES_PERMIN +
                           HIBYTE(LOWORD(beg)) * CDFRAMES_PERSEC +
                           LOBYTE(HIWORD(beg));
                       end = LOBYTE(LOWORD(end)) * CDFRAMES_PERMIN +
                           HIBYTE(LOWORD(end)) * CDFRAMES_PERSEC +
                           LOBYTE(HIWORD(end));
                       /* fall through */
                   case 0: /* HSG addressing mode */
                        play.StartingM = beg / CDFRAMES_PERMIN;
                        play.StartingS = (beg / CDFRAMES_PERSEC) % 60;
                        play.StartingF = beg % CDFRAMES_PERSEC;
                        play.EndingM   = end / CDFRAMES_PERMIN;
                        play.EndingS   = (end / CDFRAMES_PERSEC) % 60;
                        play.EndingF   = end % CDFRAMES_PERSEC;
                        DeviceIoControl(h, IOCTL_CDROM_PLAY_AUDIO_MSF, &play, sizeof(play),
                                        NULL, 0, &br, NULL);
                       break;
                   default:
                       ERR("Unsupported address mode !!\n");
                       Error = 0x0c;
                       break;
                   }
               }
               break;

           case 133:
               if (data.CurrentPosition.Header.AudioStatus == AUDIO_STATUS_IN_PROGRESS) {
                    DeviceIoControl(h, IOCTL_CDROM_PAUSE_AUDIO, NULL, 0, NULL, 0, &br, NULL);
                   TRACE(" --> STOP AUDIO (Paused)\n");
               } else {
                    DeviceIoControl(h, IOCTL_CDROM_STOP_AUDIO, NULL, 0, NULL, 0, &br, NULL);
                   TRACE(" --> STOP AUDIO (Stopped)\n");
               }
               break;

           case 136:
               TRACE(" --> RESUME AUDIO\n");
                DeviceIoControl(h, IOCTL_CDROM_PAUSE_AUDIO, NULL, 0, NULL, 0, &br, NULL);
               break;

           default:
               FIXME(" ioctl unimplemented <%d>\n", driver_request[2]);
               Error = 0x0c;
           }

           /* setting error codes if any */
           if (Error < 255) {
               driver_request[4] |= 0x80;
               driver_request[3] = Error;
           }

           CloseHandle(h);
           /* setting status bits
            * 3 == playing && done
            * 1 == done
            */
           driver_request[4] |=
                (data.CurrentPosition.Header.AudioStatus == AUDIO_STATUS_IN_PROGRESS) ? 3 : 1;

           MSCDEX_Dump("End", driver_request, dorealmode);
       }
       break;
    default:
       FIXME("Unimplemented MSCDEX function 0x%02X.\n", LOBYTE(context->Eax));
       break;
    }
}