* Mikael Pettersson : PM converted to driver model.
*/
-#include <linux/config.h>
#include <linux/init.h>
#include <linux/mm.h>
#include <asm/arch_hooks.h>
#include <asm/hpet.h>
#include <asm/i8253.h>
+#include <asm/nmi.h>
#include <mach_apic.h>
#include <mach_apicdef.h>
static void apic_pm_activate(void);
-int modern_apic(void)
+static int modern_apic(void)
{
unsigned int lvr, version;
/* AMD systems use old APIC versions, so check the CPU */
}
/* Using APIC to generate smp_local_timer_interrupt? */
-int using_apic_timer = 0;
+int using_apic_timer __read_mostly = 0;
static int enabled_via_apicbase;
maxlvt = get_maxlvt();
/*
- * Masking an LVT entry on a P6 can trigger a local APIC error
+ * Masking an LVT entry can trigger a local APIC error
* if the vector is zero. Mask LVTERR first to prevent this.
*/
if (maxlvt >= 3) {
unsigned long v;
v = apic_read(APIC_LVTT);
- apic_write_around(APIC_LVTT, v | APIC_LVT_MASKED);
+ /*
+ * When an illegal vector value (0-15) is written to an LVT
+ * entry and delivery mode is Fixed, the APIC may signal an
+ * illegal vector error, with out regard to whether the mask
+ * bit is set or whether an interrupt is actually seen on input.
+ *
+ * Boot sequence might call this function when the LVTT has
+ * '0' vector value. So make sure vector field is set to
+ * valid value.
+ */
+ v |= (APIC_LVT_MASKED | LOCAL_TIMER_VECTOR);
+ apic_write_around(APIC_LVTT, v);
}
}