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Add code to devpnc to remember when it triggers interrupts, seems to

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work okay and not have the 30-second delay problem.

Over netlink, a prirun, l, displays a couple of medium-sized packets,
then '55' from PR0055 in a tiny packet, then one more reasonable-size
packet.  The tiny packet seems odd, but I'm guessing it's a window
size or buffer size thing inside Primos / Primenet.
This commit is contained in:
Jim 2011-08-16 15:28:14 -04:00
parent 6a668b877d
commit f742bc46a9
1 changed files with 10 additions and 5 deletions
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15
devpnc.h
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@ -259,6 +259,7 @@
static short configured = 0; /* true if PNC configured */
static unsigned short pncdiag=0; /* controller diagnostic register */
static unsigned short intstat; /* interrupt status word */
static unsigned short pncstat; /* controller status word */
static unsigned short rcvstat; /* receive status word */
static unsigned short xmitstat; /* xmit status word */
@ -800,6 +801,7 @@ int devpnc (int class, int func, int device) {
}
pncstat = 0;
intstat = 0;
rcvstat = 0;
xmitstat = 0;
pncvec = 0;
@ -973,7 +975,8 @@ int devpnc (int class, int func, int device) {
} else if (func == 04) { /* OCP '0407 ack xmit (clear xmit int) */
TRACE(T_INST|T_RIO, " OCP '%02o%02o - ack xmit int\n", func, device);
pncstat &= ~PNCNSXMITINT; /* clear "xmit interrupting" */
pncstat &= ~PNCNSXMITINT; /* clear "xmit interrupt" */
intstat &= ~PNCNSXMITINT; /* clear "xmit interrupting" */
pncstat &= ~PNCNSTOKEN; /* clear "token detected" */
xmitstat = 0; /* clear xmit busy */
@ -999,7 +1002,8 @@ int devpnc (int class, int func, int device) {
} else if (func == 014) { /* OCP '1407 ack receive (clear rcv int) */
TRACE(T_INST|T_RIO, " OCP '%02o%02o - ack recv int\n", func, device);
rcvstat = 0; /* clear recv busy */
pncstat &= ~PNCNSRCVINT;
pncstat &= ~PNCNSRCVINT; /* clear recv interrupt */
intstat &= ~PNCNSRCVINT; /* clear recv interrupting */
} else if (func == 015) { /* OCP '1507 set interrupt mask (enable int) */
TRACE(T_INST|T_RIO, " OCP '%02o%02o - enable int\n", func, device);
@ -1206,10 +1210,11 @@ rcvexit:
pncrecv(timenow); /* try to read from a node */
intrexit:
if (enabled && (pncstat & 0xC000)) {
if (gvp->intvec == -1)
if (enabled && ((pncstat & 0xC000) | intstat) != intstat) {
if (gvp->intvec == -1) {
gvp->intvec = pncvec;
else
intstat |= (pncstat & 0xC000);
} else
devpoll[device] = 100;
}
break;