5 #include <asm/fixmap.h>
6 #include <asm/apicdef.h>
7 #include <asm/system.h>
15 #define APIC_VERBOSE 1
18 extern int apic_verbosity;
19 extern int apic_runs_main_timer;
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) \
32 #ifdef CONFIG_X86_LOCAL_APIC
37 * Basic functions accessing APICs.
40 static __inline void apic_write(unsigned long reg, unsigned int v)
42 *((volatile unsigned int *)(APIC_BASE+reg)) = v;
45 static __inline unsigned int apic_read(unsigned long reg)
47 return *((volatile unsigned int *)(APIC_BASE+reg));
50 static __inline__ void apic_wait_icr_idle(void)
52 while ( apic_read( APIC_ICR ) & APIC_ICR_BUSY );
55 static inline void ack_APIC_irq(void)
58 * ack_APIC_irq() actually gets compiled as a single instruction:
59 * - a single rmw on Pentium/82489DX
60 * - a single write on P6+ cores (CONFIG_X86_GOOD_APIC)
64 /* Docs say use 0 for future compatibility */
65 apic_write(APIC_EOI, 0);
68 extern int get_maxlvt (void);
69 extern void clear_local_APIC (void);
70 extern void connect_bsp_APIC (void);
71 extern void disconnect_bsp_APIC (int virt_wire_setup);
72 extern void disable_local_APIC (void);
73 extern int verify_local_APIC (void);
74 extern void cache_APIC_registers (void);
75 extern void sync_Arb_IDs (void);
76 extern void init_bsp_APIC (void);
77 extern void setup_local_APIC (void);
78 extern void init_apic_mappings (void);
79 extern void smp_local_timer_interrupt (struct pt_regs * regs);
80 extern void setup_boot_APIC_clock (void);
81 extern void setup_secondary_APIC_clock (void);
82 extern int APIC_init_uniprocessor (void);
83 extern void disable_APIC_timer(void);
84 extern void enable_APIC_timer(void);
85 extern void clustered_apic_check(void);
87 extern void setup_APIC_extened_lvt(unsigned char lvt_off, unsigned char vector,
88 unsigned char msg_type, unsigned char mask);
90 #define K8_APIC_EXT_LVT_BASE 0x500
91 #define K8_APIC_EXT_INT_MSG_FIX 0x0
92 #define K8_APIC_EXT_INT_MSG_SMI 0x2
93 #define K8_APIC_EXT_INT_MSG_NMI 0x4
94 #define K8_APIC_EXT_INT_MSG_EXT 0x7
95 #define K8_APIC_EXT_LVT_ENTRY_THRESHOLD 0
97 extern int disable_timer_pin_1;
100 void smp_send_timer_broadcast_ipi(void);
101 void switch_APIC_timer_to_ipi(void *cpumask);
102 void switch_ipi_to_APIC_timer(void *cpumask);
104 #define ARCH_APICTIMER_STOPS_ON_C3 1
106 #endif /* CONFIG_X86_LOCAL_APIC */
108 extern unsigned boot_cpu_id;
110 #endif /* __ASM_APIC_H */