sbpcd.c

LINUX1.0内核源代码,学习LINUX编程的一定要看。

		  channel0=i;
		  i=volume1;
		  volume1=volume0;
		  volume0=i;
		}
	      if (channel0==channel1)
		{
		  if (channel0==0)
		    {
		      channel1=1;
		      volume1=0;
		      volume0=value0;
		    }
		  else
		    {
		      channel0=0;
		      volume0=0;
		      volume1=value0;
		    }
		}
	    }

	  if ((volume0!=0)&&(volume1!=0))
	    {
	      if (volume0==0xFF) volume1=0xFF;
	      else if (volume1==0xFF) volume0=0xFF;
	    }
	  else if (DS[d].drv_type<drv_201) volume0=volume1=value0;

	  if (DS[d].drv_type>=drv_201)
	    {
	      if (volume0==0) control0 |= 0x80;
	      if (volume1==0) control0 |= 0x40;
	    }
	  if (DS[d].drv_type>=drv_211)
	    {
	      if (channel0!=0) control0 |= 0x20;
	      if (channel1!=1) control0 |= 0x10;
	    }
	}
      drvcmd[0]=0x84;
      drvcmd[1]=0x83;
      drvcmd[4]=control0;
      drvcmd[5]=value0;
      flags_cmd_out=f_putcmd|f_getsta|f_ResponseStatus|f_obey_p_check;
    }

  response_count=0;
  i=cmd_out();
  if (i>0) return (i);
  DS[d].diskstate_flags |= volume_bit;
  return (0);
}
/*==========================================================================*/
static int GetStatus(void)
{
  int i;

  flags_cmd_out=f_getsta|f_ResponseStatus|f_obey_p_check;
  response_count=0;
  cmd_type=0;
  i=cmd_out();
  return (i);
}
/*==========================================================================*/
static int xy_DriveReset(void)
{
  int i;

  DPRINTF((DBG_RES,"SBPCD: xy_DriveReset called.\n"));
  if (!new_drive) OUT(CDo_reset,0x00);
  else
    {
      clr_cmdbuf();
      drvcmd[0]=0x0A;
      flags_cmd_out=f_putcmd;
      response_count=0;
      i=cmd_out();
    }
  flush_status();
  i=GetStatus();
  if (i>=0) return -1;
  if (DS[d].error_byte!=aud_12) return -1;
  return (0);
}
/*==========================================================================*/
static int SetSpeed(void)
{
  int i, speed;

  if (!(DS[d].drv_options&(speed_auto|speed_300|speed_150))) return (0);
  speed=0x80;
  if (!(DS[d].drv_options&speed_auto))
    {
      speed |= 0x40;
      if (!(DS[d].drv_options&speed_300)) speed=0;
    }
  i=yy_SetSpeed(speed,0,0);
  return (i);
}
/*==========================================================================*/
static int DriveReset(void)
{
  int i;

  i=xy_DriveReset();
  if (i<0) return (-2);
  do
    {
      i=GetStatus();
      if ((i<0)&&(i!=-15)) return (-2); /* i!=-15 is from sta2err */
      if (!st_caddy_in) break;
    }
  while (!st_diskok);
  DS[d].CD_changed=1;
  i=SetSpeed();
  if (i<0) return (-2);
  return (0);
}
/*==========================================================================*/
static int xx_Pause_Resume(int pau_res)
{
  int i;

  clr_cmdbuf();
  if (new_drive)
    {
      drvcmd[0]=0x0D;
      flags_cmd_out=f_putcmd|f_respo2|f_ResponseStatus|f_obey_p_check;
    }
  else
    {
      drvcmd[0]=0x8D;
      flags_cmd_out=f_putcmd|f_respo2|f_getsta|f_ResponseStatus|f_obey_p_check;
    }
  if (pau_res!=1) drvcmd[1]=0x80;
  response_count=0;
  i=cmd_out();
  return (i);
}
/*==========================================================================*/
#if 000
static int yy_LockDoor(char lock)
{
  int i;

  if (!new_drive) return (-3);
  clr_cmdbuf();
  drvcmd[0]=0x0C;
  if (lock==1) drvcmd[1]=0x01;
  flags_cmd_out=f_putcmd|f_ResponseStatus|f_obey_p_check;
  response_count=0;
  i=cmd_out();
  return (i);
}
#endif 000
/*==========================================================================*/
static int xx_ReadSubQ(void)
{
  int i,j;

  DS[d].diskstate_flags &= ~subq_bit;
  clr_cmdbuf();
  if (new_drive)
    {
      drvcmd[0]=0x87;
      flags_cmd_out=f_putcmd|f_ResponseStatus|f_obey_p_check;
      response_count=11;
    }
  else
    {
      drvcmd[0]=0x89;
      drvcmd[1]=0x02;
      flags_cmd_out=f_putcmd|f_getsta|f_ResponseStatus|f_obey_p_check;
      response_count=13;
    }
  for (j=0;j<255;j++)
    {
      i=cmd_out();
      if (i<0) return (i);
      if (infobuf[0]!=0) break;
      if (!st_spinning)
	{
	  DS[d].SubQ_ctl_adr=DS[d].SubQ_trk=DS[d].SubQ_pnt_idx=DS[d].SubQ_whatisthis=0;
	  DS[d].SubQ_run_tot=DS[d].SubQ_run_trk=0;
	  return (0);
	}
    }
  DS[d].SubQ_audio=infobuf[0];
  DS[d].SubQ_ctl_adr=swap_nibbles(infobuf[1]);
  DS[d].SubQ_trk=byt2bcd(infobuf[2]);
  DS[d].SubQ_pnt_idx=byt2bcd(infobuf[3]);
  i=4;
  if (!new_drive) i=5;
  DS[d].SubQ_run_tot=make32(make16(0,infobuf[i]),make16(infobuf[i+1],infobuf[i+2])); /* msf-bin */
  i=7;
  if (!new_drive) i=9;
  DS[d].SubQ_run_trk=make32(make16(0,infobuf[i]),make16(infobuf[i+1],infobuf[i+2])); /* msf-bin */
  DS[d].SubQ_whatisthis=infobuf[i+3];
  DS[d].diskstate_flags |= subq_bit;
  return (0);
}
/*==========================================================================*/
static int xx_ModeSense(void)
{
  int i;

  DS[d].diskstate_flags &= ~frame_size_bit;
  clr_cmdbuf();
  if (new_drive)
    {
      drvcmd[0]=0x84;
      drvcmd[1]=0x00;
      flags_cmd_out=f_putcmd|f_ResponseStatus|f_obey_p_check;
      response_count=5;
    }
  else
    {
      drvcmd[0]=0x85;
      drvcmd[1]=0x00;
      flags_cmd_out=f_putcmd|f_getsta|f_ResponseStatus|f_obey_p_check;
      response_count=2;
    }
  i=cmd_out();
  if (i<0) return (i);
  i=0;
  if (new_drive) DS[d].sense_byte=infobuf[i++];
  DS[d].frame_size=make16(infobuf[i],infobuf[i+1]);
  DS[d].diskstate_flags |= frame_size_bit;
  return (0);
}
/*==========================================================================*/
#if 0000
static int xx_TellVolume(void)
{
  int i;
  u_char switches;
  u_char chan0,vol0,chan1,vol1;

  DS[d].diskstate_flags &= ~volume_bit;
  clr_cmdbuf();
  if (new_drive)
    {
      drvcmd[0]=0x84;
      drvcmd[1]=0x05;
      response_count=5;
      flags_cmd_out=f_putcmd|f_ResponseStatus|f_obey_p_check;
    }
  else
    {
      drvcmd[0]=0x85;
      drvcmd[1]=0x03;
      response_count=2;
      flags_cmd_out=f_putcmd|f_getsta|f_ResponseStatus|f_obey_p_check;
    }
  i=cmd_out();
  if (i<0) return (i);
  if (new_drive)
    {
      chan0=infobuf[1]&0x0F;
      vol0=infobuf[2];
      chan1=infobuf[3]&0x0F;
      vol1=infobuf[4];
      if (chan0==0)
	{
	  chan0=1;
	  vol0=0;
	}
      if (chan1==0)
	{
	  chan1=2;
	  vol1=0;
	}
      chan0 >>= 1;
      chan1 >>= 1;
    }
  else
    {
      chan0=0;
      chan1=1;
      vol0=vol1=infobuf[1];
      if (DS[d].drv_type>=drv_201)
	{
	  if (DS[d].drv_type<drv_300)
	    {
	      switches=infobuf[0];
	      if ((switches&0x80)!=0) vol0=0;
	      if ((switches&0x40)!=0) vol1=0;
	      if (DS[d].drv_type>=drv_211)
		{
		  if ((switches&0x20)!=0) chan0=1;
		  if ((switches&0x10)!=0) chan1=0;
		}
	    }
	  else
	    {
	      vol0=infobuf[0];
	      if ((vol0&0x01)!=0) chan0=1;
	      if ((vol1&0x01)==0) chan1=0;
	      vol0 &= 0xFC;
	      vol1 &= 0xFC;
	      if (vol0!=0) vol0 += 3;
	      if (vol1!=0) vol1 += 3;
	    }
	}
    }
  DS[d].vol_chan0=chan0;
  DS[d].vol_ctrl0=vol0;
  DS[d].vol_chan1=chan1;
  DS[d].vol_ctrl1=vol1;
  DS[d].vol_chan2=2;
  DS[d].vol_ctrl2=0xFF;
  DS[d].vol_chan3=3;
  DS[d].vol_ctrl3=0xFF;
  DS[d].diskstate_flags |= volume_bit;
  return (0);
}
#endif
/*==========================================================================*/
static int xx_ReadCapacity(void)
{
  int i;

  DS[d].diskstate_flags &= ~cd_size_bit;
  clr_cmdbuf();
  if (new_drive)
    {
      drvcmd[0]=0x85;
      flags_cmd_out=f_putcmd|f_ResponseStatus|f_obey_p_check;
    }
  else
    {
      drvcmd[0]=0x88;
      flags_cmd_out=f_putcmd|f_getsta|f_ResponseStatus|f_obey_p_check;
    }
  response_count=5;
  i=cmd_out();
  if (i<0) return (i);
  DS[d].CDsize_blk=make32(make16(0,infobuf[0]),make16(infobuf[1],infobuf[2]));
  if (new_drive) DS[d].CDsize_blk=msf2blk(DS[d].CDsize_blk);
  DS[d].CDsize_frm = (DS[d].CDsize_blk * make16(infobuf[3],infobuf[4])) / CD_FRAMESIZE;
  DS[d].CDsize_blk += 151;
  DS[d].diskstate_flags |= cd_size_bit;
  return (0);
}
/*==========================================================================*/
static int xx_ReadTocDescr(void)
{
  int i;

  DS[d].diskstate_flags &= ~toc_bit;
  clr_cmdbuf();
  if (new_drive)
    {
      drvcmd[0]=0x8B;
      flags_cmd_out=f_putcmd|f_ResponseStatus|f_obey_p_check;
    }
  else
    {
      drvcmd[0]=0x8B;
      flags_cmd_out=f_putcmd|f_getsta|f_ResponseStatus|f_obey_p_check;
    }
  response_count=6;
  i=cmd_out();
  if (i<0) return (i);
  DS[d].xa_byte=infobuf[0];
  DS[d].n_first_track=infobuf[1];
  DS[d].n_last_track=infobuf[2];
  DS[d].size_msf=make32(make16(0,infobuf[3]),make16(infobuf[4],infobuf[5]));
  DS[d].size_blk=msf2blk(DS[d].size_msf);
  DS[d].diskstate_flags |= toc_bit;
  DPRINTF((DBG_TOC,"SBPCD: TocDesc: %02X %02X %02X %08X\n",
	 DS[d].xa_byte,DS[d].n_first_track,DS[d].n_last_track,DS[d].size_msf));
  return (0);
}
/*==========================================================================*/
static int xx_ReadTocEntry(int num)
{
  int i;

  clr_cmdbuf();
  if (new_drive)
    {
      drvcmd[0]=0x8C;
      flags_cmd_out=f_putcmd|f_ResponseStatus|f_obey_p_check;
    }
  else
    {
      drvcmd[0]=0x8C;
      drvcmd[1]=0x02;
      flags_cmd_out=f_putcmd|f_getsta|f_ResponseStatus|f_obey_p_check;
    }
  drvcmd[2]=num;
  response_count=8;
  i=cmd_out();
  if (i<0) return (i);
  DS[d].TocEnt_nixbyte=infobuf[0];
  DS[d].TocEnt_ctl_adr=swap_nibbles(infobuf[1]);
  DS[d].TocEnt_number=infobuf[2];
  DS[d].TocEnt_format=infobuf[3];
  if (new_drive) i=4;
  else i=5;
  DS[d].TocEnt_address=make32(make16(0,infobuf[i]),make16(infobuf[i+1],infobuf[i+2]));
  DPRINTF((DBG_TOC,"SBPCD: TocEntry: %02X %02X %02X %02X %08X\n",
	   DS[d].TocEnt_nixbyte,DS[d].TocEnt_ctl_adr,DS[d].TocEnt_number,
	   DS[d].TocEnt_format,DS[d].TocEnt_address));
  return (0);
}
/*==========================================================================*/
static int xx_ReadPacket(void)
{
  int i;

  clr_cmdbuf();
  drvcmd[0]=0x8E;
  drvcmd[1]=response_count;
  flags_cmd_out=f_putcmd|f_getsta|f_ResponseStatus|f_obey_p_check;
  i=cmd_out();
  return (i);
}
/*==========================================================================*/
static int convert_UPC(u_char *p)
{
  int i;

  p++;
  if (!new_drive) p[13]=0;
  for (i=0;i<7;i++)
    {
      if (new_drive) DS[d].UPC_buf[i]=swap_nibbles(*p++);
      else
	{
	  DS[d].UPC_buf[i]=((*p++)<<4)&0xFF;
	  DS[d].UPC_buf[i] |= *p++;
	}
    }
  DS[d].UPC_buf[6] &= 0xF0;
  return (0);
}
/*==========================================================================*/
static int xx_ReadUPC(void)
{
  int i;

  DS[d].diskstate_flags &= ~upc_bit;
  clr_cmdbuf();
  if (new_drive)
    {
      drvcmd[0]=0x88;
      response_count=8;
      flags_cmd_out=f_putcmd|f_ResponseStatus|f_obey_p_check;
    }
  else
    {
      drvcmd[0]=0x08;
      response_count=0;
      flags_cmd_out=f_putcmd|f_lopsta|f_getsta|f_ResponseStatus|f_obey_p_check|f_bit1;
    }
  i=cmd_out();
  if (i<0) return (i);
  if (!new_drive)
    {
      response_count=16;
      i=xx_ReadPacket();
      if (i<0) return (i);
    }
  DS[d].UPC_ctl_adr=0;
  if (new_drive) i=0;
  else i=2;
  if ((infobuf[i]&0x80)!=0)
    {
      convert_UPC(&infobuf[i]);
      DS[d].UPC_ctl_adr &= 0xF0;
      DS[d].UPC_ctl_adr |= 0x02;
    }
  DS[d].diskstate_flags |= upc_bit;
  return (0);
}
/*==========================================================================*/
static int yy_CheckMultiSession(void)
{
  int i;