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fix the test for option slot interrupts. If a given interrupt is 

disabled (and therefore can't have caused the actual I/O interrupt),
don't try to call its handler even if its bit is set in the interrupt
register.
This commit is contained in:
cgd 1996-05-01 23:19:50 +00:00
parent b94c366058
commit cb0eb158e7
1 changed files with 9 additions and 4 deletions
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13
sys/arch/alpha/tc/tc_3000_300.c
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@ -1,4 +1,4 @@
/* $NetBSD: tc_3000_300.c,v 1.6 1996/04/12 06:09:58 cgd Exp $ */
/* $NetBSD: tc_3000_300.c,v 1.7 1996/05/01 23:19:50 cgd Exp $ */
/*
* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
@ -182,7 +182,7 @@ tc_3000_300_iointr(framep, vec)
void *framep;
int vec;
{
u_int32_t tcir, ioasicir;
u_int32_t tcir, ioasicir, ioasicimr;
int opt0intr, opt1intr, ifound;
#ifdef DIAGNOSTIC
@ -202,8 +202,13 @@ tc_3000_300_iointr(framep, vec)
tcir = *(volatile u_int32_t *)TC_3000_300_IR;
ioasicir = *(volatile u_int32_t *)
IOASIC_REG_INTR(DEC_3000_300_IOASIC_ADDR);
ioasicimr = *(volatile u_int32_t *)
IOASIC_REG_IMSK(DEC_3000_300_IOASIC_ADDR);
tc_mb();
/* Ignore interrupts that aren't enabled out. */
ioasicir &= ioasicimr;
/* clear the interrupts/errors we found. */
*(volatile u_int32_t *)TC_3000_300_IR = tcir;
/* XXX can't clear TC option slot interrupts here? */
@ -222,9 +227,9 @@ tc_3000_300_iointr(framep, vec)
CHECKINTR(TC_3000_300_DEV_IOASIC, tcir & TC_3000_300_IR_IOASIC);
CHECKINTR(TC_3000_300_DEV_TCDS, tcir & TC_3000_300_IR_TCDS);
CHECKINTR(TC_3000_300_DEV_OPT1,
ioasicir & IOASIC_INTR_300_OPT0);
CHECKINTR(TC_3000_300_DEV_OPT0,
ioasicir & IOASIC_INTR_300_OPT1);
CHECKINTR(TC_3000_300_DEV_OPT0,
ioasicir & IOASIC_INTR_300_OPT0);
#undef CHECKINTR
#ifdef DIAGNOSTIC