static int mcdx_open(struct cdrom_device_info *cdi, int purpose)
{
struct s_drive_stuff *stuffp;
xtrace(OPENCLOSE, "open()\n");
stuffp = cdi->handle;
if (!stuffp->present)
return -ENXIO;
/* Make the modules looking used ... (thanx bjorn).
* But we shouldn't forget to decrement the module counter
* on error return */
/* this is only done to test if the drive talks with us */
if (-1 == mcdx_getstatus(stuffp, 1))
return -EIO;
if (stuffp->xxx) {
xtrace(OPENCLOSE, "open() media changed\n");
stuffp->audiostatus = CDROM_AUDIO_INVALID;
stuffp->readcmd = 0;
xtrace(OPENCLOSE, "open() Request multisession info\n");
if (-1 ==
mcdx_requestmultidiskinfo(stuffp, &stuffp->multi, 6))
xinfo("No multidiskinfo\n");
} else {
/* multisession ? */
if (!stuffp->multi.multi)
stuffp->multi.msf_last.second = 2;
xtrace(OPENCLOSE, "open() MS: %d, last @ %02x:%02x.%02x\n",
stuffp->multi.multi,
stuffp->multi.msf_last.minute,
stuffp->multi.msf_last.second,
stuffp->multi.msf_last.frame);
{;
} /* got multisession information */
/* request the disks table of contents (aka diskinfo) */
if (-1 == mcdx_requesttocdata(stuffp, &stuffp->di, 1)) {
stuffp->lastsector = -1;
} else {
stuffp->lastsector = (CD_FRAMESIZE / 512)
* msf2log(&stuffp->di.msf_leadout) - 1;
xtrace(OPENCLOSE,
"open() start %d (%02x:%02x.%02x) %d\n",
stuffp->di.n_first,
stuffp->di.msf_first.minute,
stuffp->di.msf_first.second,
stuffp->di.msf_first.frame,
msf2log(&stuffp->di.msf_first));
xtrace(OPENCLOSE,
"open() last %d (%02x:%02x.%02x) %d\n",
stuffp->di.n_last,
stuffp->di.msf_leadout.minute,
stuffp->di.msf_leadout.second,
stuffp->di.msf_leadout.frame,
msf2log(&stuffp->di.msf_leadout));
}
if (stuffp->toc) {
xtrace(MALLOC, "open() free old toc @ %p\n",
stuffp->toc);
kfree(stuffp->toc);
stuffp->toc = NULL;
}
xtrace(OPENCLOSE, "open() init irq generation\n");
if (-1 == mcdx_config(stuffp, 1))
return -EIO;
#ifdef FALLBACK
/* Set the read speed */
xwarn("AAA %x AAA\n", stuffp->readcmd);
if (stuffp->readerrs)
stuffp->readcmd = READ1X;
else
stuffp->readcmd =
stuffp->present | SINGLE ? READ1X : READ2X;
xwarn("XXX %x XXX\n", stuffp->readcmd);
#else
stuffp->readcmd =
stuffp->present | SINGLE ? READ1X : READ2X;
#endif
/* try to get the first sector, iff any ... */
if (stuffp->lastsector >= 0) {
char buf[512];
int ans;
int tries;
stuffp->xa = 0;
stuffp->audio = 0;
for (tries = 6; tries; tries--) {
stuffp->introk = 1;
xtrace(OPENCLOSE, "open() try as %s\n",
stuffp->xa ? "XA" : "normal");
/* set data mode */
if (-1 == (ans = mcdx_setdatamode(stuffp,
stuffp->
xa ?
MODE2 :
MODE1,
1))) {
/* return -EIO; */
stuffp->xa = 0;
break;
}
if ((stuffp->audio = e_audio(ans)))
break;
while (0 ==
(ans =
mcdx_transfer(stuffp, buf, 0, 1)));
if (ans == 1)
break;
stuffp->xa = !stuffp->xa;
}
}
/* xa disks will be read in raw mode, others not */
if (-1 == mcdx_setdrivemode(stuffp,
stuffp->xa ? RAW : COOKED,
1))
return -EIO;
if (stuffp->audio) {
xinfo("open() audio disk found\n");
} else if (stuffp->lastsector >= 0) {
xinfo("open() %s%s disk found\n",
stuffp->xa ? "XA / " : "",
stuffp->multi.
multi ? "Multi Session" : "Single Session");
}
}
stuffp->xxx = 0;
stuffp->users++;
return 0;
}
int mcdx_readtoc(struct s_drive_stuff *stuffp)
/* Read the toc entries from the CD,
* Return: -1 on failure, else 0 */
{
if (stuffp->toc) {
xtrace(READTOC, "ioctl() toc already read\n");
return 0;
}
xtrace(READTOC, "ioctl() readtoc for %d tracks\n",
stuffp->di.n_last - stuffp->di.n_first + 1);
if (-1 == mcdx_hold(stuffp, 1))
return -1;
xtrace(READTOC, "ioctl() tocmode\n");
if (-1 == mcdx_setdrivemode(stuffp, TOC, 1))
return -EIO;
/* all seems to be ok so far ... malloc */
{
int size;
size =
sizeof(struct s_subqcode) * (stuffp->di.n_last -
stuffp->di.n_first + 2);
xtrace(MALLOC, "ioctl() malloc %d bytes\n", size);
stuffp->toc = kmalloc(size, GFP_KERNEL);
if (!stuffp->toc) {
xwarn("Cannot malloc %d bytes for toc\n", size);
mcdx_setdrivemode(stuffp, DATA, 1);
return -EIO;
}
}
/* now read actually the index */
{
int trk;
int retries;
for (trk = 0;
trk < (stuffp->di.n_last - stuffp->di.n_first + 1);
trk++)
stuffp->toc[trk].index = 0;
for (retries = 300; retries; retries--) { /* why 300? */
struct s_subqcode q;
unsigned int idx;
if (-1 == mcdx_requestsubqcode(stuffp, &q, 1)) {
mcdx_setdrivemode(stuffp, DATA, 1);
return -EIO;
}
idx = bcd2uint(q.index);
if ((idx > 0)
&& (idx <= stuffp->di.n_last)
&& (q.tno == 0)
&& (stuffp->toc[idx - stuffp->di.n_first].
index == 0)) {
stuffp->toc[idx - stuffp->di.n_first] = q;
xtrace(READTOC,
"ioctl() toc idx %d (trk %d)\n",
idx, trk);
trk--;
}
if (trk == 0)
break;
}
memset(&stuffp->
toc[stuffp->di.n_last - stuffp->di.n_first + 1], 0,
sizeof(stuffp->toc[0]));
stuffp->toc[stuffp->di.n_last - stuffp->di.n_first +
1].dt = stuffp->di.msf_leadout;
}
/* unset toc mode */
xtrace(READTOC, "ioctl() undo toc mode\n");
if (-1 == mcdx_setdrivemode(stuffp, DATA, 2))
return -EIO;
#if MCDX_DEBUG && READTOC
{
int trk;
for (trk = 0;
trk < (stuffp->di.n_last - stuffp->di.n_first + 2);
trk++)
xtrace(READTOC, "ioctl() %d readtoc %02x %02x %02x"
" %02x:%02x.%02x %02x:%02x.%02x\n",
trk + stuffp->di.n_first,
stuffp->toc[trk].control,
stuffp->toc[trk].tno,
stuffp->toc[trk].index,
stuffp->toc[trk].tt.minute,
stuffp->toc[trk].tt.second,
stuffp->toc[trk].tt.frame,
stuffp->toc[trk].dt.minute,
stuffp->toc[trk].dt.second,
stuffp->toc[trk].dt.frame);
}
#endif
return 0;
}
