5 #include <arch/fixmap.h>
6 #include <arch/apicdef.h>
7 #include <arch/system.h>
13 #define APIC_VERBOSE 1
16 extern int apic_verbosity;
17 extern int apic_runs_main_timer;
19 extern unsigned long lapic_phys_addr;
22 * Define the default level of output to be very little
23 * This can be turned up by using apic=verbose for more
24 * information and apic=debug for _lots_ of information.
25 * apic_verbosity is defined in apic.c
27 #define apic_printk(v, s, a...) do { \
28 if ((v) <= apic_verbosity) \
35 * Basic functions accessing APICs.
38 static __inline void apic_write(unsigned long reg, uint32_t val)
40 *((volatile uint32_t *)(APIC_BASE+reg)) = val;
43 static __inline uint32_t apic_read(unsigned long reg)
45 return *((volatile uint32_t *)(APIC_BASE+reg));
48 static inline void lapic_ack_interrupt(void)
51 * This gets compiled to a single instruction:
52 * movl $0x0,0xffffffffffdfe0b0
54 * Docs say use 0 for future compatibility.
56 apic_write(APIC_EOI, 0);
59 extern void clear_local_APIC (void);
60 extern void connect_bsp_APIC (void);
61 extern void disconnect_bsp_APIC (int virt_wire_setup);
62 extern void disable_local_APIC (void);
63 extern int verify_local_APIC (void);
64 extern void cache_APIC_registers (void);
65 extern void sync_Arb_IDs (void);
66 extern void init_bsp_APIC (void);
67 extern void setup_local_APIC (void);
68 extern void init_apic_mappings (void);
69 extern void smp_local_timer_interrupt (struct pt_regs * regs);
70 extern void setup_boot_APIC_clock (void);
71 extern void setup_secondary_APIC_clock (void);
72 extern void setup_apic_nmi_watchdog (void);
73 extern int reserve_lapic_nmi(void);
74 extern void release_lapic_nmi(void);
75 extern void disable_timer_nmi_watchdog(void);
76 extern void enable_timer_nmi_watchdog(void);
77 extern void nmi_watchdog_tick (struct pt_regs * regs, unsigned reason);
78 extern int APIC_init_uniprocessor (void);
79 extern void disable_APIC_timer(void);
80 extern void enable_APIC_timer(void);
81 extern void clustered_apic_check(void);
83 extern void nmi_watchdog_default(void);
84 extern int setup_nmi_watchdog(char *);
86 extern unsigned int nmi_watchdog;
87 #define NMI_DEFAULT -1
90 #define NMI_LOCAL_APIC 2
93 extern int disable_timer_pin_1;
95 extern void setup_threshold_lvt(unsigned long lvt_off);
97 void smp_send_timer_broadcast_ipi(void);
98 void switch_APIC_timer_to_ipi(void *cpumask);
99 void switch_ipi_to_APIC_timer(void *cpumask);
101 #define ARCH_APICTIMER_STOPS_ON_C3 1
103 extern unsigned boot_cpu_id;
105 extern void __init lapic_map(void);
106 extern void __init lapic_init(void);
107 extern void lapic_set_timer(uint32_t count);
108 extern unsigned int lapic_calibrate_timer(void);
109 extern void lapic_dump(void);
110 extern void lapic_send_init_ipi(unsigned int cpu);
111 extern void lapic_send_startup_ipi(unsigned int cpu, unsigned long start_rip);
112 extern void lapic_send_ipi(unsigned int cpu, unsigned int vector);
114 #endif /* __ASM_APIC_H */