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Read the CPU mailbox in the level 15 soft interrupt handler and respond 

to idle and stop requests.
This commit is contained in:
pk 2003-01-16 16:27:48 +00:00
parent b418a6a59d
commit 58b50d0643
1 changed files with 28 additions and 5 deletions
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33
sys/arch/sparc/sparc/intr.c
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@ -1,4 +1,4 @@
/* $NetBSD: intr.c,v 1.74 2003/01/09 10:27:24 pk Exp $ */
/* $NetBSD: intr.c,v 1.75 2003/01/16 16:27:48 pk Exp $ */
/*
* Copyright (c) 1992, 1993
@ -253,7 +253,7 @@ nmi_hard()
nmi_hard_wait = 0;
simple_unlock(&nmihard_lock);
if (fatal && drop_into_rom_on_fatal) {
callrom();
prom_abort();
return;
}
#endif
@ -269,6 +269,29 @@ void
nmi_soft(tf)
struct trapframe *tf;
{
if (cpuinfo.mailbox) {
/* Check PROM messages */
u_int8_t msg = *(u_int8_t *)cpuinfo.mailbox;
switch (msg) {
case OPENPROM_MBX_STOP:
case OPENPROM_MBX_WD:
/* In case there's an xcall in progress (unlikely) */
spl0();
cpuinfo.flags &= ~CPUFLG_READY;
prom_cpustop(0);
break;
case OPENPROM_MBX_ABORT:
case OPENPROM_MBX_BPT:
prom_cpuidle(0);
/*
* We emerge here after someone does a
* prom_resumecpu(ournode).
*/
return;
default:
break;
}
}
#if defined(MULTIPROCESSOR)
switch (cpuinfo.msg_lev15.tag) {
@ -281,10 +304,10 @@ nmi_soft(tf)
#else
while (cpuinfo.flags & CPUFLG_PAUSED)
/* spin */;
#endif
return;
#endif /* DDB */
}
#endif
cpuinfo.msg_lev15.tag = 0;
#endif /* MULTIPROCESSOR */
}
#if defined(MULTIPROCESSOR)