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1275 |
phoenix |
#ifndef __ASM_APIC_H
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#define __ASM_APIC_H
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#include <linux/config.h>
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#include <linux/pm.h>
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#include <asm/apicdef.h>
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#include <asm/system.h>
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#ifdef CONFIG_X86_LOCAL_APIC
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#define APIC_DEBUG 0
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#if APIC_DEBUG
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#define Dprintk(x...) printk(x)
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#else
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#define Dprintk(x...)
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#endif
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/*
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* Basic functions accessing APICs.
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*/
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static __inline void apic_write(unsigned long reg, unsigned long v)
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{
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*((volatile unsigned long *)(APIC_BASE+reg)) = v;
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}
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static __inline void apic_write_atomic(unsigned long reg, unsigned long v)
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{
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xchg((volatile unsigned long *)(APIC_BASE+reg), v);
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}
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static __inline unsigned long apic_read(unsigned long reg)
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{
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return *((volatile unsigned long *)(APIC_BASE+reg));
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}
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static __inline__ void apic_wait_icr_idle(void)
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{
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do { } while ( apic_read( APIC_ICR ) & APIC_ICR_BUSY );
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}
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#ifdef CONFIG_X86_GOOD_APIC
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# define FORCE_READ_AROUND_WRITE 0
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# define apic_read_around(x)
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# define apic_write_around(x,y) apic_write((x),(y))
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#else
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# define FORCE_READ_AROUND_WRITE 1
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# define apic_read_around(x) apic_read(x)
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# define apic_write_around(x,y) apic_write_atomic((x),(y))
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#endif
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static inline void ack_APIC_irq(void)
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{
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/*
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* ack_APIC_irq() actually gets compiled as a single instruction:
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* - a single rmw on Pentium/82489DX
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* - a single write on P6+ cores (CONFIG_X86_GOOD_APIC)
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* ... yummie.
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*/
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/* Docs say use 0 for future compatibility */
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apic_write_around(APIC_EOI, 0);
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}
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extern int get_maxlvt(void);
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extern void clear_local_APIC(void);
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extern void connect_bsp_APIC (void);
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extern void disconnect_bsp_APIC (void);
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extern void disable_local_APIC (void);
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extern int verify_local_APIC (void);
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extern void cache_APIC_registers (void);
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extern void sync_Arb_IDs (void);
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extern void init_bsp_APIC (void);
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extern void setup_local_APIC (void);
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extern void init_apic_mappings (void);
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extern void smp_local_timer_interrupt (struct pt_regs * regs);
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extern void setup_APIC_clocks (void);
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extern void setup_apic_nmi_watchdog (void);
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extern inline void nmi_watchdog_tick (struct pt_regs * regs);
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extern int APIC_init_uniprocessor (void);
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extern void disable_APIC_timer(void);
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extern void enable_APIC_timer(void);
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extern struct pm_dev *apic_pm_register(pm_dev_t, unsigned long, pm_callback);
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extern void apic_pm_unregister(struct pm_dev*);
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extern unsigned int apic_timer_irqs [NR_CPUS];
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extern int check_nmi_watchdog (void);
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extern unsigned int nmi_watchdog;
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#define NMI_NONE 0
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#define NMI_IO_APIC 1
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#define NMI_LOCAL_APIC 2
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#define NMI_INVALID 3
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#endif /* CONFIG_X86_LOCAL_APIC */
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#endif /* __ASM_APIC_H */
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