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Rename the current mp_{pause,resume}_cpus() => mp_{pause,resume}_cpus_ddb(). 

Implement mp_pause_cpus/mp_resume_cpus on top of the PROM services.
This commit is contained in:
pk 2003-01-16 16:57:43 +00:00
parent 58b50d0643
commit 72c28f7bb7
3 changed files with 88 additions and 32 deletions
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6
sys/arch/sparc/include/cpu.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: cpu.h,v 1.60 2003/01/14 22:54:53 pk Exp $ */
/* $NetBSD: cpu.h,v 1.61 2003/01/16 16:57:44 pk Exp $ */
/*
* Copyright (c) 1992, 1993
@ -238,6 +238,10 @@ int emulinstr(int, struct trapframe *);
void mp_pause_cpus(void);
void mp_resume_cpus(void);
void mp_halt_cpus(void);
#ifdef DDB
void mp_pause_cpus_ddb(void);
void mp_resume_cpus_ddb(void);
#endif
/* msiiep.c */
void msiiep_swap_endian(int);

104
sys/arch/sparc/sparc/cpu.c
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@ -1,4 +1,4 @@
/* $NetBSD: cpu.c,v 1.163 2003/01/16 16:10:44 pk Exp $ */
/* $NetBSD: cpu.c,v 1.164 2003/01/16 16:57:43 pk Exp $ */
/*
* Copyright (c) 1996
@ -754,41 +754,49 @@ xcall(func, arg0, arg1, arg2, arg3, cpuset)
splx(s);
}
/*
* Tell all CPUs other than the current one to enter the PROM idle loop.
*/
void
mp_pause_cpus()
{
int n;
if (cpus == NULL)
return;
for (n = 0; n < ncpu; n++) {
struct cpu_info *cpi = cpus[n];
if (CPU_NOTREADY(cpi))
continue;
cpi->msg_lev15.tag = XPMSG15_PAUSECPU;
raise_ipi(cpi,15); /* high priority intr */
}
}
void
mp_resume_cpus()
{
int n;
if (cpus == NULL)
return;
for (n = 0; n < ncpu; n++) {
struct cpu_info *cpi = cpus[n];
if (cpi == NULL || cpuinfo.mid == cpi->mid)
continue;
/* tell it to continue */
cpi->flags &= ~CPUFLG_PAUSED;
/*
* This PROM utility will put the OPENPROM_MBX_ABORT
* message (0xfc) in the target CPU's mailbox and then
* send it a level 15 soft interrupt.
*/
if (prom_cpuidle(cpi->node) != 0)
printf("cpu%d could not be paused\n", cpi->ci_cpuid);
}
}
int cpunum(void); int cpunum(void) {return cpuinfo.ci_cpuid;}
/*
* Resume all idling CPUs.
*/
void
mp_resume_cpus()
{
int n;
for (n = 0; n < ncpu; n++) {
struct cpu_info *cpi = cpus[n];
if (cpi == NULL || cpuinfo.mid == cpi->mid)
continue;
/*
* This PROM utility makes the target CPU return
* from its prom_cpuidle(0) call (see intr.c:nmi_soft()).
*/
if (prom_cpuresume(cpi->node) != 0)
printf("cpu%d could not be resumed\n", cpi->ci_cpuid);
}
}
@ -808,14 +816,54 @@ mp_halt_cpus()
/*
* This PROM utility will put the OPENPROM_MBX_STOP
* message (0xfb) in the CPU's mailbox and then send
* it a level 15 soft interrupt.
* message (0xfb) in the target CPU's mailbox and then
* send it a level 15 soft interrupt.
*/
r = prom_cpustop(cpi->node);
printf("cpu%d %shalted\n", cpi->ci_cpuid,
r == 0 ? "" : "(boot CPU?) can not be ");
}
}
#if defined(DDB)
void
mp_pause_cpus_ddb()
{
int n;
if (cpus == NULL)
return;
for (n = 0; n < ncpu; n++) {
struct cpu_info *cpi = cpus[n];
if (CPU_NOTREADY(cpi))
continue;
cpi->msg_lev15.tag = XPMSG15_PAUSECPU;
raise_ipi(cpi,15); /* high priority intr */
}
}
void
mp_resume_cpus_ddb()
{
int n;
if (cpus == NULL)
return;
for (n = 0; n < ncpu; n++) {
struct cpu_info *cpi = cpus[n];
if (cpi == NULL || cpuinfo.mid == cpi->mid)
continue;
/* tell it to continue */
cpi->flags &= ~CPUFLG_PAUSED;
}
}
#endif /* DDB */
#endif /* MULTIPROCESSOR */
/*

10
sys/arch/sparc/sparc/db_interface.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: db_interface.c,v 1.52 2003/01/13 19:44:53 pk Exp $ */
/* $NetBSD: db_interface.c,v 1.53 2003/01/16 16:57:43 pk Exp $ */
/*
* Mach Operating System
@ -231,6 +231,10 @@ static int db_suspend_others(void);
static void db_resume_others(void);
void ddb_suspend(struct trapframe *tf);
/* from cpu.c */
void mp_pause_cpus_ddb(void);
void mp_resume_cpus_ddb(void);
__cpu_simple_lock_t db_lock;
int ddb_cpu = NOCPU;
@ -250,7 +254,7 @@ db_suspend_others(void)
__cpu_simple_unlock(&db_lock);
if (win)
mp_pause_cpus();
mp_pause_cpus_ddb();
return win;
}
@ -259,7 +263,7 @@ static void
db_resume_others(void)
{
mp_resume_cpus();
mp_resume_cpus_ddb();
__cpu_simple_lock(&db_lock);
ddb_cpu = NOCPU;