by Hi everybody,
I hope this is the right place for posting this query :)
This is regarding the STREAMS implementation on DEC OSF/1 3.0 on
DEC 2100 server.
I'm presently trying to write a hardware STREAMS device driver.
I'm able to successfully configure my Streams device driver into the
kernel statically.
My probe, attach, configure interfaces are being invoked properly.
But my wput() interface is somehow not getting invoked.
Could you tell me where to look for the bug !!
My device driver source code has the following Streams related
initializations :
static struct module_info minfo = {
0, PCIDSNAME, PCIDSMINPSZ, PCIDSMAXPSZ, PCIDSHIWAT, PCIDSLOWAT
};
static struct qinit rinit = {
pcidsrput, NULL, pcids_open, pcids_close, NULL, &minfo, NULL
};
static struct qinit winit = {
pcidswput, NULL, NULL, NULL, NULL, &minfo, NULL
};
struct streamtab pcids_info = { &rinit, &winit, NULL, NULL };
My pcids_configure interface successfully managed to add the
pcids driver using the strmod_add() kernel utility.
Even my xxxopen and xxxxclose interface are being invoked properly.
But my write() to this device (before closing !!) returns 0xFFFFFFFF (-1).
That is to say that my pcidswput() interface never manages to print the
message
"I'm inside pcidswput...." in the console.
My pcidswput() interface looks like this :
static int pcidswput (q, mp)
queue_t *q;
mblk_t *mp;
{
printf ("I'm inside pcidswput....\n") ;
switch (DB_TYPE(mp)) {
case M_FLUSH:
if (*mp->b_rptr & FLUSHW)
flushq(q, 0);
putnext(q, mp);
break;
default:
putq(q, mp);
break;
}
return 0;
}
What could be the problem ?
Thanks in anticipation.
Please make it convenient to send me a reply by email.
Regards,
Abhay Ranade
CDAC, India.