blob: 8c454aa58ac6b157441ad2a77f9211e4a30f882e [file] [log] [blame]
#ifndef __ASM_APIC_H
#define __ASM_APIC_H
#include <linux/config.h>
#include <linux/pm.h>
#include <asm/fixmap.h>
#include <asm/apicdef.h>
#include <asm/processor.h>
#include <asm/system.h>
#define Dprintk(x...)
* Debugging macros
#define APIC_QUIET 0
#define APIC_VERBOSE 1
#define APIC_DEBUG 2
extern int enable_local_apic;
extern int apic_verbosity;
static inline void lapic_disable(void)
enable_local_apic = -1;
clear_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability);
static inline void lapic_enable(void)
enable_local_apic = 1;
* Define the default level of output to be very little
* This can be turned up by using apic=verbose for more
* information and apic=debug for _lots_ of information.
* apic_verbosity is defined in apic.c
#define apic_printk(v, s, a...) do { \
if ((v) <= apic_verbosity) \
printk(s, ##a); \
} while (0)
* Basic functions accessing APICs.
static __inline void apic_write(unsigned long reg, unsigned long v)
*((volatile unsigned long *)(APIC_BASE+reg)) = v;
static __inline void apic_write_atomic(unsigned long reg, unsigned long v)
xchg((volatile unsigned long *)(APIC_BASE+reg), v);
static __inline unsigned long apic_read(unsigned long reg)
return *((volatile unsigned long *)(APIC_BASE+reg));
static __inline__ void apic_wait_icr_idle(void)
while ( apic_read( APIC_ICR ) & APIC_ICR_BUSY )
int get_physical_broadcast(void);
# define apic_read_around(x)
# define apic_write_around(x,y) apic_write((x),(y))
# define apic_read_around(x) apic_read(x)
# define apic_write_around(x,y) apic_write_atomic((x),(y))
static inline void ack_APIC_irq(void)
* ack_APIC_irq() actually gets compiled as a single instruction:
* - a single rmw on Pentium/82489DX
* - a single write on P6+ cores (CONFIG_X86_GOOD_APIC)
* ... yummie.
/* Docs say use 0 for future compatibility */
apic_write_around(APIC_EOI, 0);
extern void (*wait_timer_tick)(void);
extern int get_maxlvt(void);
extern void clear_local_APIC(void);
extern void connect_bsp_APIC (void);
extern void disconnect_bsp_APIC (int virt_wire_setup);
extern void disable_local_APIC (void);
extern void lapic_shutdown (void);
extern int verify_local_APIC (void);
extern void cache_APIC_registers (void);
extern void sync_Arb_IDs (void);
extern void init_bsp_APIC (void);
extern void setup_local_APIC (void);
extern void init_apic_mappings (void);
extern void smp_local_timer_interrupt (struct pt_regs * regs);
extern void setup_boot_APIC_clock (void);
extern void setup_secondary_APIC_clock (void);
extern void setup_apic_nmi_watchdog (void);
extern int reserve_lapic_nmi(void);
extern void release_lapic_nmi(void);
extern void disable_timer_nmi_watchdog(void);
extern void enable_timer_nmi_watchdog(void);
extern void nmi_watchdog_tick (struct pt_regs * regs);
extern int APIC_init_uniprocessor (void);
extern void disable_APIC_timer(void);
extern void enable_APIC_timer(void);
extern void enable_NMI_through_LVT0 (void * dummy);
extern unsigned int nmi_watchdog;
#define NMI_NONE 0
#define NMI_IO_APIC 1
#define NMI_LOCAL_APIC 2
#define NMI_INVALID 3
extern int disable_timer_pin_1;
#else /* !CONFIG_X86_LOCAL_APIC */
static inline void lapic_shutdown(void) { }
#endif /* !CONFIG_X86_LOCAL_APIC */
#endif /* __ASM_APIC_H */