On port-sparc, Christian Dueholm Christensen wrote:

> I have some problems playing audio cd's on my SS4.
...
> If I try /dev/rcd0c I get (after a little wait) an error message on the
> console saying:
...
> cd0(esp0:6:0):  Check Condition on CDB: 0x15 10 00 00 1c 00
>     SENSE KEY:  Unit Attention
>      ASC/ASCQ:  Power On, Reset, or Bus Device Reset Occurred

I've noticed a few messages (on various lists) about problems playing
audio CD's.  Just another data point, if I try to play to audio CD's on
a Toshiba 4101 (connected to an Atari), I get :

cd0(ncrscsi0:6:0):  Check Condition on opcode 0x15
    SENSE KEY:  Illegal Request
     ASC/ASCQ:  Invalid Field In Parameter List
         SKSV:  Error in Parameters, Offset 25, bit 7

but the CD plays.  My NEC drives (sparc/i386) won't play at all and my
Pioneer drive (sparc) plays with an SCSI error.

The problem appears to be with the CDIOCPLAYTRACKS ioctl [1].  I've had a
quick look but I'm not sure why 'Offset 25, bit 7' is incorrect.  The
smallest program that I can generate the problem with is :

#include <fcntl.h>
#include <sys/cdio.h>
#include <sys/ioctl.h>

#define CD_PART "/dev/cd0c"
main()
{
    int d;
    struct ioc_play_track cmd;

    cmd.start_index = 1;
    cmd.end_index = 1;
    cmd.start_track = 1;
    cmd.end_track = 1;

    d = open (CD_PART, O_RDONLY);
    ioctl (d, CDIOCPLAYTRACKS, &cmd);
    close (d);
}

Any pointers on where to look?

J

PS.  This came up on port-sparc originally, but it doesn't seem to be port
specific.

[1] AFAIK xmcd doesn't use CDIOCPLAYTRACKS, so that's why it works but
xcdplayer et al. fail.
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