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) \
35 * Basic functions accessing APICs.
38 static __inline void apic_write(unsigned long reg, unsigned int v)
40 *((volatile unsigned int *)(APIC_BASE+reg)) = v;
43 static __inline unsigned int apic_read(unsigned long reg)
45 return *((volatile unsigned int *)(APIC_BASE+reg));
48 static __inline__ void apic_wait_icr_idle(void)
50 while (apic_read( APIC_ICR ) & APIC_ICR_BUSY)
54 static inline void ack_APIC_irq(void)
57 * ack_APIC_irq() actually gets compiled as a single instruction:
58 * - a single rmw on Pentium/82489DX
59 * - a single write on P6+ cores (CONFIG_X86_GOOD_APIC)
63 /* Docs say use 0 for future compatibility */
64 apic_write(APIC_EOI, 0);
67 extern int get_maxlvt (void);
68 extern void clear_local_APIC (void);
69 extern void connect_bsp_APIC (void);
70 extern void disconnect_bsp_APIC (int virt_wire_setup);
71 extern void disable_local_APIC (void);
72 extern int verify_local_APIC (void);
73 extern void cache_APIC_registers (void);
74 extern void sync_Arb_IDs (void);
75 extern void init_bsp_APIC (void);
76 extern void setup_local_APIC (void);
77 extern void init_apic_mappings (void);
78 extern void smp_local_timer_interrupt (struct pt_regs * regs);
79 extern void setup_boot_APIC_clock (void);
80 extern void setup_secondary_APIC_clock (void);
81 extern int APIC_init_uniprocessor (void);
82 extern void disable_APIC_timer(void);
83 extern void enable_APIC_timer(void);
84 extern void clustered_apic_check(void);
86 extern void setup_APIC_extened_lvt(unsigned char lvt_off, unsigned char vector,
87 unsigned char msg_type, unsigned char mask);
89 #define K8_APIC_EXT_LVT_BASE 0x500
90 #define K8_APIC_EXT_INT_MSG_FIX 0x0
91 #define K8_APIC_EXT_INT_MSG_SMI 0x2
92 #define K8_APIC_EXT_INT_MSG_NMI 0x4
93 #define K8_APIC_EXT_INT_MSG_EXT 0x7
94 #define K8_APIC_EXT_LVT_ENTRY_THRESHOLD 0
96 extern int disable_timer_pin_1;
99 void smp_send_timer_broadcast_ipi(void);
100 void switch_APIC_timer_to_ipi(void *cpumask);
101 void switch_ipi_to_APIC_timer(void *cpumask);
103 #define ARCH_APICTIMER_STOPS_ON_C3 1
105 extern unsigned boot_cpu_id;
107 #endif /* __ASM_APIC_H */