diff options
Diffstat (limited to 'arch/powerpc/platforms/chrp/smp.c')
| -rw-r--r-- | arch/powerpc/platforms/chrp/smp.c | 42 |
1 files changed, 7 insertions, 35 deletions
diff --git a/arch/powerpc/platforms/chrp/smp.c b/arch/powerpc/platforms/chrp/smp.c index 10a4a4d063b..b6c9a0dcc92 100644 --- a/arch/powerpc/platforms/chrp/smp.c +++ b/arch/powerpc/platforms/chrp/smp.c @@ -14,11 +14,10 @@ #include <linux/interrupt.h> #include <linux/kernel_stat.h> #include <linux/delay.h> -#include <linux/init.h> #include <linux/spinlock.h> #include <asm/ptrace.h> -#include <asm/atomic.h> +#include <linux/atomic.h> #include <asm/irq.h> #include <asm/page.h> #include <asm/pgtable.h> @@ -26,48 +25,21 @@ #include <asm/io.h> #include <asm/prom.h> #include <asm/smp.h> -#include <asm/time.h> #include <asm/machdep.h> #include <asm/mpic.h> #include <asm/rtas.h> -static void __devinit smp_chrp_kick_cpu(int nr) +static int smp_chrp_kick_cpu(int nr) { *(unsigned long *)KERNELBASE = nr; asm volatile("dcbf 0,%0"::"r"(KERNELBASE):"memory"); -} -static void __devinit smp_chrp_setup_cpu(int cpu_nr) -{ - mpic_setup_this_cpu(); + return 0; } -static DEFINE_SPINLOCK(timebase_lock); -static unsigned int timebase_upper = 0, timebase_lower = 0; - -void __devinit smp_chrp_give_timebase(void) +static void smp_chrp_setup_cpu(int cpu_nr) { - spin_lock(&timebase_lock); - rtas_call(rtas_token("freeze-time-base"), 0, 1, NULL); - timebase_upper = get_tbu(); - timebase_lower = get_tbl(); - spin_unlock(&timebase_lock); - - while (timebase_upper || timebase_lower) - barrier(); - rtas_call(rtas_token("thaw-time-base"), 0, 1, NULL); -} - -void __devinit smp_chrp_take_timebase(void) -{ - while (!(timebase_upper || timebase_lower)) - barrier(); - spin_lock(&timebase_lock); - set_tb(timebase_upper, timebase_lower); - timebase_upper = 0; - timebase_lower = 0; - spin_unlock(&timebase_lock); - printk("CPU %i taken timebase\n", smp_processor_id()); + mpic_setup_this_cpu(); } /* CHRP with openpic */ @@ -76,6 +48,6 @@ struct smp_ops_t chrp_smp_ops = { .probe = smp_mpic_probe, .kick_cpu = smp_chrp_kick_cpu, .setup_cpu = smp_chrp_setup_cpu, - .give_timebase = smp_chrp_give_timebase, - .take_timebase = smp_chrp_take_timebase, + .give_timebase = rtas_give_timebase, + .take_timebase = rtas_take_timebase, }; |