static int
mcdx_playmsf(struct s_drive_stuff *stuffp, const struct cdrom_msf *msf)
{
unsigned char cmd[7] = {
0, 0, 0, 0, 0, 0, 0
};
if (!stuffp->readcmd) {
xinfo("Can't play from missing disk.\n");
return -1;
}
cmd[0] = stuffp->playcmd;
cmd[1] = msf->cdmsf_min0;
cmd[2] = msf->cdmsf_sec0;
cmd[3] = msf->cdmsf_frame0;
cmd[4] = msf->cdmsf_min1;
cmd[5] = msf->cdmsf_sec1;
cmd[6] = msf->cdmsf_frame1;
xtrace(PLAYMSF, "ioctl(): play %x "
"%02x:%02x:%02x -- %02x:%02x:%02x\n",
cmd[0], cmd[1], cmd[2], cmd[3], cmd[4], cmd[5], cmd[6]);
outsb(stuffp->wreg_data, cmd, sizeof cmd);
if (-1 == mcdx_getval(stuffp, 3 * HZ, 0, NULL)) {
xwarn("playmsf() timeout\n");
return -1;
}
stuffp->audiostatus = CDROM_AUDIO_PLAY;
return 0;
}
static int mcdx_talk(struct s_drive_stuff *stuffp,
const unsigned char *cmd, size_t cmdlen,
void *buffer, size_t size, unsigned int timeout, int tries)
/* Send a command to the drive, wait for the result.
* returns -1 on timeout, drive status otherwise
* If buffer is not zero, the result (length size) is stored there.
* If buffer is zero the size should be the number of bytes to read
* from the drive. These bytes are discarded.
*/
{
int st;
char c;
int discard;
/* Somebody wants the data read? */
if ((discard = (buffer == NULL)))
buffer = &c;
while (stuffp->lock) {
xtrace(SLEEP, "*** talk: lockq\n");
interruptible_sleep_on(&stuffp->lockq);
xtrace(SLEEP, "talk: awoken\n");
}
stuffp->lock = 1;
/* An operation other then reading data destroys the
* data already requested and remembered in stuffp->request, ... */
stuffp->valid = 0;
#if MCDX_DEBUG & TALK
{
unsigned char i;
xtrace(TALK,
"talk() %d / %d tries, res.size %d, command 0x%02x",
tries, timeout, size, (unsigned char) cmd[0]);
for (i = 1; i < cmdlen; i++)
xtrace(TALK, " 0x%02x", cmd[i]);
xtrace(TALK, "\n");
}
#endif
/* give up if all tries are done (bad) or if the status
* st != -1 (good) */
for (st = -1; st == -1 && tries; tries--) {
char *bp = (char *) buffer;
size_t sz = size;
outsb(stuffp->wreg_data, cmd, cmdlen);
xtrace(TALK, "talk() command sent\n");
/* get the status byte */
if (-1 == mcdx_getval(stuffp, timeout, 0, bp)) {
xinfo("talk() %02x timed out (status), %d tr%s left\n",
cmd[0], tries - 1, tries == 2 ? "y" : "ies");
continue;
}
st = *bp;
sz--;
if (!discard)
bp++;
xtrace(TALK, "talk() got status 0x%02x\n", st);
/* command error? */
if (e_cmderr(st)) {
xwarn("command error cmd = %02x %s \n",
cmd[0], cmdlen > 1 ? "..." : "");
st = -1;
continue;
}
/* audio status? */
if (stuffp->audiostatus == CDROM_AUDIO_INVALID)
stuffp->audiostatus =
e_audiobusy(st) ? CDROM_AUDIO_PLAY :
CDROM_AUDIO_NO_STATUS;
else if (stuffp->audiostatus == CDROM_AUDIO_PLAY
&& e_audiobusy(st) == 0)
stuffp->audiostatus = CDROM_AUDIO_COMPLETED;
/* media change? */
if (e_changed(st)) {
xinfo("talk() media changed\n");
stuffp->xxx = stuffp->yyy = 1;
}
/* now actually get the data */
while (sz--) {
if (-1 == mcdx_getval(stuffp, timeout, 0, bp)) {
xinfo("talk() %02x timed out (data), %d tr%s left\n",
cmd[0], tries - 1,
tries == 2 ? "y" : "ies");
st = -1;
break;
}
if (!discard)
bp++;
xtrace(TALK, "talk() got 0x%02x\n", *(bp - 1));
}
}
#if !MCDX_QUIET
if (!tries && st == -1)
xinfo("talk() giving up\n");
#endif
stuffp->lock = 0;
wake_up_interruptible(&stuffp->lockq);
xtrace(TALK, "talk() done with 0x%02x\n", st);
return st;
}
