#ifndef __ASM_APIC_H #define __ASM_APIC_H #include #include #include #include #include #include #define Dprintk(x...) /* * Debugging macros */ #define APIC_QUIET 0 #define APIC_VERBOSE 1 #define APIC_DEBUG 2 extern int apic_verbosity; /* * 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) extern void generic_apic_probe(void); #ifdef CONFIG_X86_LOCAL_APIC /* * Basic functions accessing APICs. */ #ifdef CONFIG_PARAVIRT #include #else #define apic_write native_apic_write #define apic_write_atomic native_apic_write_atomic #define apic_read native_apic_read #define setup_boot_clock setup_boot_APIC_clock #define setup_secondary_clock setup_secondary_APIC_clock #endif static __inline fastcall void native_apic_write(unsigned long reg, unsigned long v) { *((volatile unsigned long *)(APIC_BASE+reg)) = v; } static __inline fastcall void native_apic_write_atomic(unsigned long reg, unsigned long v) { xchg((volatile unsigned long *)(APIC_BASE+reg), v); } static __inline fastcall unsigned long native_apic_read(unsigned long reg) { return *((volatile unsigned long *)(APIC_BASE+reg)); } void apic_wait_icr_idle(void); unsigned long safe_apic_wait_icr_idle(void); int get_physical_broadcast(void); #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 lapic_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 (void); extern void setup_boot_APIC_clock (void); extern void setup_secondary_APIC_clock (void); extern int APIC_init_uniprocessor (void); extern void enable_NMI_through_LVT0 (void * dummy); #define ARCH_APICTIMER_STOPS_ON_C3 1 extern int timer_over_8254; extern int local_apic_timer_c2_ok; extern int local_apic_timer_disabled; #else /* !CONFIG_X86_LOCAL_APIC */ static inline void lapic_shutdown(void) { } #endif /* !CONFIG_X86_LOCAL_APIC */ #endif /* __ASM_APIC_H */