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authorDavid S. Miller <davem@davemloft.net>2005-10-14 18:26:08 -0400
committerDavid S. Miller <davem@davemloft.net>2005-10-14 18:26:08 -0400
commitb4d1b825785847cddee6d104113da913f2ca8efb (patch)
treeb491001940d86d6e3325300056aeda4158f6ef84 /arch/sparc64
parentf75884d28a6eae5a422d0454b982da3842f777af (diff)
[SPARC64]: Fix powering off on SMP.
Doing a "SUNW,stop-self" firmware call on the other cpus is not the correct thing to do when dropping into the firmware for a halt, reboot, or power-off. For now, just do nothing to quiet the other cpus, as the system should be quiescent enough. Later we may decide to implement smp_send_stop() like the other SMP platforms do. Based upon a report from Christopher Zimmermann. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64')
-rw-r--r--arch/sparc64/kernel/smp.c7
-rw-r--r--arch/sparc64/mm/ultra.S16
-rw-r--r--arch/sparc64/prom/misc.c12
3 files changed, 0 insertions, 35 deletions
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index 590df5a16f5a..b137fd63f5e1 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -1001,13 +1001,6 @@ void smp_penguin_jailcell(int irq, struct pt_regs *regs)
1001 preempt_enable(); 1001 preempt_enable();
1002} 1002}
1003 1003
1004extern unsigned long xcall_promstop;
1005
1006void smp_promstop_others(void)
1007{
1008 smp_cross_call(&xcall_promstop, 0, 0, 0);
1009}
1010
1011#define prof_multiplier(__cpu) cpu_data(__cpu).multiplier 1004#define prof_multiplier(__cpu) cpu_data(__cpu).multiplier
1012#define prof_counter(__cpu) cpu_data(__cpu).counter 1005#define prof_counter(__cpu) cpu_data(__cpu).counter
1013 1006
diff --git a/arch/sparc64/mm/ultra.S b/arch/sparc64/mm/ultra.S
index 058b8126c1a7..e4c9151fa116 100644
--- a/arch/sparc64/mm/ultra.S
+++ b/arch/sparc64/mm/ultra.S
@@ -453,22 +453,6 @@ xcall_flush_dcache_page_spitfire: /* %g1 == physical page address
453 nop 453 nop
454 nop 454 nop
455 455
456 .globl xcall_promstop
457xcall_promstop:
458 rdpr %pstate, %g2
459 wrpr %g2, PSTATE_IG | PSTATE_AG, %pstate
460 rdpr %pil, %g2
461 wrpr %g0, 15, %pil
462 sethi %hi(109f), %g7
463 b,pt %xcc, etrap_irq
464109: or %g7, %lo(109b), %g7
465 flushw
466 call prom_stopself
467 nop
468 /* We should not return, just spin if we do... */
4691: b,a,pt %xcc, 1b
470 nop
471
472 .data 456 .data
473 457
474errata32_hwbug: 458errata32_hwbug:
diff --git a/arch/sparc64/prom/misc.c b/arch/sparc64/prom/misc.c
index 9b895faf077b..87f5cfce23bb 100644
--- a/arch/sparc64/prom/misc.c
+++ b/arch/sparc64/prom/misc.c
@@ -68,19 +68,11 @@ void prom_cmdline(void)
68 local_irq_restore(flags); 68 local_irq_restore(flags);
69} 69}
70 70
71#ifdef CONFIG_SMP
72extern void smp_promstop_others(void);
73#endif
74
75/* Drop into the prom, but completely terminate the program. 71/* Drop into the prom, but completely terminate the program.
76 * No chance of continuing. 72 * No chance of continuing.
77 */ 73 */
78void prom_halt(void) 74void prom_halt(void)
79{ 75{
80#ifdef CONFIG_SMP
81 smp_promstop_others();
82 udelay(8000);
83#endif
84again: 76again:
85 p1275_cmd("exit", P1275_INOUT(0, 0)); 77 p1275_cmd("exit", P1275_INOUT(0, 0));
86 goto again; /* PROM is out to get me -DaveM */ 78 goto again; /* PROM is out to get me -DaveM */
@@ -88,10 +80,6 @@ again:
88 80
89void prom_halt_power_off(void) 81void prom_halt_power_off(void)
90{ 82{
91#ifdef CONFIG_SMP
92 smp_promstop_others();
93 udelay(8000);
94#endif
95 p1275_cmd("SUNW,power-off", P1275_INOUT(0, 0)); 83 p1275_cmd("SUNW,power-off", P1275_INOUT(0, 0));
96 84
97 /* if nothing else helps, we just halt */ 85 /* if nothing else helps, we just halt */