apic.h
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:2k
- #ifndef __ASM_APIC_H
- #define __ASM_APIC_H
- #include <linux/config.h>
- #include <linux/pm.h>
- #include <asm/apicdef.h>
- #include <asm/system.h>
- #ifdef CONFIG_X86_LOCAL_APIC
- #define APIC_DEBUG 0
- #if APIC_DEBUG
- #define Dprintk(x...) printk(x)
- #else
- #define Dprintk(x...)
- #endif
- /*
- * 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)
- {
- do { } while ( apic_read( APIC_ICR ) & APIC_ICR_BUSY );
- }
- #ifdef CONFIG_X86_GOOD_APIC
- # define FORCE_READ_AROUND_WRITE 0
- # define apic_read_around(x)
- # define apic_write_around(x,y) apic_write((x),(y))
- #else
- # define FORCE_READ_AROUND_WRITE 1
- # define apic_read_around(x) apic_read(x)
- # define apic_write_around(x,y) apic_write_atomic((x),(y))
- #endif
- 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 int get_maxlvt(void);
- extern void clear_local_APIC(void);
- extern void connect_bsp_APIC (void);
- extern void disconnect_bsp_APIC (void);
- extern void disable_local_APIC (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_APIC_clocks (void);
- extern void setup_apic_nmi_watchdog (void);
- extern inline void nmi_watchdog_tick (struct pt_regs * regs);
- extern int APIC_init_uniprocessor (void);
- extern struct pm_dev *apic_pm_register(pm_dev_t, unsigned long, pm_callback);
- extern void apic_pm_unregister(struct pm_dev*);
- extern unsigned int apic_timer_irqs [NR_CPUS];
- extern int check_nmi_watchdog (void);
- extern unsigned int nmi_watchdog;
- #define NMI_NONE 0
- #define NMI_IO_APIC 1
- #define NMI_LOCAL_APIC 2
- #define NMI_INVALID 3
- #endif /* CONFIG_X86_LOCAL_APIC */
- #endif /* __ASM_APIC_H */