apic_write(APIC_SPIV, value);
}
+void lapic_shutdown(void)
+{
+ unsigned long flags;
+
+ if (!cpu_has_apic)
+ return;
+
+ local_irq_save(flags);
+
+ disable_local_APIC();
+
+ local_irq_restore(flags);
+}
+
/*
* This is to verify that we're looking at a real local APIC.
* Check these against your board if the CPUs aren't getting
}
static struct sysdev_class lapic_sysclass = {
- set_kset_name("lapic"),
+ .name = "lapic",
.resume = lapic_resume,
.suspend = lapic_suspend,
};
setup_APIC_timer();
}
+/*
+ * AMD C1E enabled CPUs have a real nasty problem: Some BIOSes set the
+ * C1E flag only in the secondary CPU, so when we detect the wreckage
+ * we already have enabled the boot CPU local apic timer. Check, if
+ * disable_apic_timer is set and the DUMMY flag is cleared. If yes,
+ * set the DUMMY flag again and force the broadcast mode in the
+ * clockevents layer.
+ */
+void __cpuinit check_boot_apic_timer_broadcast(void)
+{
+ if (!disable_apic_timer ||
+ (lapic_clockevent.features & CLOCK_EVT_FEAT_DUMMY))
+ return;
+
+ printk(KERN_INFO "AMD C1E detected late. Force timer broadcast.\n");
+ lapic_clockevent.features |= CLOCK_EVT_FEAT_DUMMY;
+
+ local_irq_enable();
+ clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_FORCE, &boot_cpu_id);
+ local_irq_disable();
+}
+
void __cpuinit setup_secondary_APIC_clock(void)
{
+ check_boot_apic_timer_broadcast();
setup_APIC_timer();
}
if (v & (1 << (SPURIOUS_APIC_VECTOR & 0x1f)))
ack_APIC_irq();
+ add_pda(irq_spurious_count, 1);
irq_exit();
}