msdos/cdrom.c

   1
   2 /*
   3  *  Cdrom - device driver emulation - Audio features.
   4  *  (c) 1998 Petr Tomasek <tomasek@etf.cuni.cz>
   5  *
   6  */
   7
   8 #ifdef linux
   9
  10 #include "config.h"
  11 #include <fcntl.h>
  12 #include <sys/ioctl.h>
  13 #include <sys/types.h>
  14 /* FIXME - how to make this OS independent ?? */
  15 #ifdef HAVE_LINUX_CDROM_H
  16 # include <linux/cdrom.h>
  17 #endif
  18 #ifdef HAVE_LINUX_UCDROM_H
  19 # include <linux/ucdrom.h>
  20 #endif
  21
  22 #include "ldt.h"
  23 #include "drive.h"
  24 #include "msdos.h"
  25 #include "miscemu.h"
  26 #include "module.h"
  27 /* #define DEBUG_INT */
  28 #include "debug.h"
  29
  30
  31 /*  FIXME - more general ?? */
  32 #define cdrom_dev "/dev/cdrom"
  33
  34 u_char cdrom_a_status (int fd)
  35 {
  36 struct cdrom_subchnl sc;
  37
  38 ioctl(fd,CDROMSUBCHNL,&sc);
  39 return sc.cdsc_audiostatus;
  40 }
  41
  42 BYTE * get_io_stru (WORD * reqh,int dorealmode)
  43 {
  44 WORD ofst,segm;
  45 BYTE * io_stru;
  46 ofst = reqh[7]; segm = reqh[8];
  47
  48 if (dorealmode)
  49   io_stru = DOSMEM_MapRealToLinear (MAKELONG(ofst,segm));
  50 else
  51   io_stru = PTR_SEG_OFF_TO_LIN(segm,ofst);
  52
  53 return io_stru;
  54 }
  55
  56 DWORD msf0_to_abs (struct cdrom_msf0 msf)
  57 {
  58 return  (msf.minute *60 +
  59         msf.second) *75 +
  60         msf.frame-150;
  61 }
  62
  63 void abs_to_msf0 (DWORD abs, struct cdrom_msf0 * msf)
  64 {
  65 DWORD d;
  66 d=abs+150;
  67 msf->frame=d%75;  d=d/75;
  68 msf->second=d%60; msf->minute=d/60;
  69 }
  70
  71 void msf0_to_msf (struct cdrom_msf0 from, struct cdrom_msf0 to, struct cdrom_msf * msf)
  72 {
  73 msf->cdmsf_min0=from.minute;
  74 msf->cdmsf_min1=to.minute;
  75 msf->cdmsf_sec0=from.second;
  76 msf->cdmsf_sec1=to.second;
  77 msf->cdmsf_frame0=from.frame;
  78 msf->cdmsf_frame1=to.frame;
  79 }
  80
  81 void abs_to_msf (DWORD from, DWORD to, struct cdrom_msf * msf)
  82 {
  83 struct cdrom_msf0 fr,tt;
  84 abs_to_msf0(from, &fr);
  85 abs_to_msf0(to, &tt);
  86 msf0_to_msf(fr,tt,msf);
  87 }
  88
  89 /************************************************************
  90  *
  91  *   Cdrom ms-dos driver emulation.
  92  *    (accesible throught the MSCDEX 0x10 function.)
  93  */
  94
  95 extern void do_mscdex_dd (CONTEXT * context, int dorealmode)
  96  {
  97  BYTE * driver_request;
  98  BYTE * io_stru;
  99  static int fdcd=-1; /* file descriptor.. */
 100  struct cdrom_tochdr tochdr; /* the Toc header */
 101  struct cdrom_tocentry tocentry; /* a Toc entry */
 102  struct cdrom_msf msf;
 103  struct cdrom_subchnl subchnl;
 104  u_char Error=255; /*No Error */
 105
 106 if (dorealmode)
 107   driver_request=DOSMEM_MapRealToLinear
 108                         (MAKELONG(BX_reg(context),ES_reg(context)));
 109 else
 110   driver_request=PTR_SEG_OFF_TO_LIN(ES_reg(context),BX_reg(context));
 111
 112 if (!driver_request)
 113      {             /* FIXME - to be deleted ?? */
 114         ERR(int,"   ES:BX==0 ! SEGFAULT ?\n");
 115         ERR(int," -->BX=0x%04x, ES=0x%04lx, DS=0x%04lx, CX=0x%04x\n\n",
 116                 BX_reg(context),
 117                 ES_reg(context),
 118                 DS_reg(context),
 119                 CX_reg(context));
 120      }
 121 else
 122
 123 /* FIXME - would be best to open the device at the begining of the wine
 124    session .... */
 125  if (fdcd<0) fdcd=open(cdrom_dev,O_RDONLY);
 126
 127    TRACE(int,"CDROM device driver -> command <%d>\n",
 128          (unsigned char)driver_request[2]);
 129
 130 /* set status to 0 */
 131  driver_request[3]=0;
 132  driver_request[4]=0;
 133
 134
 135  switch(driver_request[2])
 136  {
 137  case 3:
 138    io_stru=get_io_stru((WORD *)driver_request,dorealmode);
 139    FIXME(int," --> IOCTL INPUT <%d>\n",io_stru[0]);
 140    switch (io_stru[0])
 141         {
 142         case 1: /* location of head */
 143          if (io_stru[1]==0)
 144           {
 145           ioctl(fdcd,CDROMSUBCHNL,&subchnl);
 146         ((DWORD*)io_stru+2)[0]=(DWORD)msf0_to_abs(subchnl.cdsc_absaddr.msf);
 147          FIXME(int," ----> HEAD LOCATION <%ld>\n\n",
 148                                 ((DWORD *)io_stru+2)[0]);
 149           }
 150          else
 151           {
 152          ERR(int,"CDRom-Driver: Unsupported address mode !!\n");
 153          Error=0x0c;
 154           }
 155          break;
 156
 157         case 6: /* device status */
 158               /* FIXME .. does this work properly ?? */
 159          io_stru[3]=io_stru[4]=0;
 160          io_stru[2]=1; /* supports audio channels (?? FIXME ??) */
 161          io_stru[1]=16; /* data read and plays audio racks */
 162          io_stru[1]|=(ioctl(fdcd,CDROM_DRIVE_STATUS,0)==CDS_TRAY_OPEN);
 163          TRACE(int," ----> DEVICE STATUS <0x%08lx>\n\n",(DWORD)io_stru[1]);
 164          break;
 165
 166         case 9: /* media changed ? */
 167          if (ioctl(fdcd,CDROM_MEDIA_CHANGED,0))
 168           io_stru[1]=0xff;
 169          else
 170           io_stru[0]=0; /* FIXME? 1? */
 171          break;
 172
 173         case 10: /* audio disk info */
 174          ioctl(fdcd,CDROMREADTOCHDR,&tochdr);
 175          io_stru[1]=tochdr.cdth_trk0; /* staring track of the disc */
 176          io_stru[2]=tochdr.cdth_trk1; /* ending track */
 177          tocentry.cdte_track=CDROM_LEADOUT; /* Now the leadout track ...*/
 178          tocentry.cdte_format=CDROM_MSF;
 179          ioctl(fdcd,CDROMREADTOCENTRY,&tocentry); /* ... get position of it */
 180          ((DWORD*)io_stru+3)[0]=(DWORD)msf0_to_abs(tocentry.cdte_addr.msf);
 181          TRACE(int," ----> AUDIO DISK INFO <%d-%d/%ld>\n\n",
 182                                 io_stru[1],io_stru[2],
 183                                 ((DWORD *)io_stru+3)[0]);
 184          break;
 185
 186
 187         case 11: /* audio track info */
 188          tocentry.cdte_track=io_stru[1]; /* track of the disc */
 189          tocentry.cdte_format=CDROM_MSF;
 190          ioctl(fdcd,CDROMREADTOCENTRY,&tocentry);
 191          ((DWORD*)io_stru+2)[0]=(DWORD)msf0_to_abs(tocentry.cdte_addr.msf);
 192                         /* starting point if the track */
 193          io_stru[6]=tocentry.cdte_adr+16*tocentry.cdte_ctrl;
 194          TRACE(int," ----> AUDIO TRACK INFO <track=%d>[%ld] \n\n",
 195                          io_stru[1],((DWORD *)io_stru+2)[0]);
 196          break;
 197
 198         case 12: /* get Q-Channel / Subchannel (??) info */
 199          subchnl.cdsc_format=CDROM_MSF;
 200          ioctl(fdcd,CDROMSUBCHNL,&subchnl);
 201          io_stru[1]=subchnl.cdsc_adr+16*subchnl.cdsc_ctrl;
 202          io_stru[2]=subchnl.cdsc_trk;
 203          io_stru[3]=subchnl.cdsc_ind; /* FIXME - ?? */
 204          io_stru[4]=subchnl.cdsc_reladdr.msf.minute;
 205          io_stru[5]=subchnl.cdsc_reladdr.msf.second;
 206          io_stru[6]=subchnl.cdsc_reladdr.msf.frame;
 207          io_stru[7]=0; /* always zero */
 208          io_stru[8]=subchnl.cdsc_absaddr.msf.minute;
 209          io_stru[9]=subchnl.cdsc_absaddr.msf.second;
 210          io_stru[10]=subchnl.cdsc_absaddr.msf.frame;
 211          break;
 212
 213         case 15: /* fixme !!!!!!! just a small workaround ! */
 214          /* !!!! FIXME FIXME FIXME !! */
 215          tocentry.cdte_track=CDROM_LEADOUT; /* Now the leadout track ...*/
 216          tocentry.cdte_format=CDROM_MSF;
 217          ioctl(fdcd,CDROMREADTOCENTRY,&tocentry); /* ... get position of it */
 218          ((DWORD*)io_stru+7)[0]=(DWORD)msf0_to_abs(tocentry.cdte_addr.msf);
 219         break;
 220
 221         default:
 222          FIXME(int," Cdrom-driver: IOCTL INPUT: Unimplemented <%d>!! \n",
 223                                                              io_stru[0]);
 224          Error=0x0c;
 225          break;
 226         }
 227    break;
 228
 229  case 12:
 230    io_stru=get_io_stru((WORD *)driver_request,dorealmode);
 231    TRACE(int," --> IOCTL OUTPUT <%d>\n",io_stru[0]);
 232    switch (io_stru[0])
 233         {
 234         case 0: /* eject */
 235          ioctl (fdcd,CDROMEJECT);
 236          TRACE(int," ----> EJECT \n\n");
 237          break;
 238         case 5: /* close tray */
 239          ioctl (fdcd,CDROMCLOSETRAY);
 240          TRACE(int," ----> CLOSE TRAY \n\n");
 241          break;
 242         case 2: /* reset drive */
 243          ioctl (fdcd,CDROMRESET);
 244          TRACE(int," ----> RESET \n\n");
 245          break;
 246         default:
 247          FIXME(int," Cdrom-driver: IOCTL OUPUT: Unimplemented <%d>!! \n",
 248                                                              io_stru[0]);
 249          Error=0x0c;
 250          break;
 251         }
 252    break;
 253
 254 case 133:
 255    if (cdrom_a_status(fdcd)==CDROM_AUDIO_PLAY)
 256      {
 257      ioctl (fdcd,CDROMPAUSE);
 258      TRACE(int," --> STOP AUDIO (Paused)\n\n");
 259      }
 260    else
 261      {
 262      ioctl (fdcd,CDROMSTOP);
 263      TRACE(int," --> STOP AUDIO (Stopped)\n\n");
 264      }
 265    break;
 266
 267  case 132:  /* FIXME - It didn't function for me... */
 268    FIXME(int," --> PLAY AUDIO \n");
 269      ioctl (fdcd,CDROMSTART);
 270    FIXME(int,"Mode :<0x%02X> , [%ld-%ld]\n\n",
 271           (unsigned char)driver_request[13],
 272           ((DWORD*)driver_request+14)[0],
 273           ((DWORD*)driver_request+18)[0]);
 274    if (driver_request[13]==0)
 275      {
 276     abs_to_msf(((DWORD*)driver_request+14)[0],
 277                ((DWORD*)driver_request+18)[0],&msf);
 278     ioctl(fdcd,CDROMPLAYMSF,&msf);
 279      }
 280    else
 281      {
 282     ERR(int,"CDRom-Driver: Unsupported address mode !!\n");
 283     Error=0x0c;
 284      }
 285    break;
 286  case 136:
 287    TRACE(int," --> RESUME AUDIO \n\n");
 288    ioctl(fdcd,CDROMRESUME);
 289    break;
 290  default:
 291    FIXME(int," CDRom-Driver - ioctl uninplemented <%d>\n",driver_request[2]);
 292    Error=0x0c;
 293
 294  }
 295
 296 if (Error<255)
 297  {
 298  driver_request[4]|=127;
 299  driver_request[3]=Error;
 300  }
 301  driver_request[4]|=2*(cdrom_a_status(fdcd)==CDROM_AUDIO_PLAY);
 302
 303 /*  close (fdcd); FIXME !! -- cannot use close when ejecting
 304     the cd-rom - close would close it again */
 305 }
 306
 307 #endif
 308