4 #include <linux/config.h>
6 #include <asm/fixmap.h>
7 #include <asm/apicdef.h>
8 #include <asm/system.h>
16 #define APIC_VERBOSE 1
19 extern int apic_verbosity
;
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
void apic_write_atomic(unsigned long reg
, unsigned int v
)
47 xchg((volatile unsigned int *)(APIC_BASE
+reg
), v
);
50 static __inline
unsigned int apic_read(unsigned long reg
)
52 return *((volatile unsigned int *)(APIC_BASE
+reg
));
55 static __inline__
void apic_wait_icr_idle(void)
57 while ( apic_read( APIC_ICR
) & APIC_ICR_BUSY
);
60 #define FORCE_READ_AROUND_WRITE 0
61 #define apic_read_around(x)
62 #define apic_write_around(x,y) apic_write((x),(y))
64 static inline void ack_APIC_irq(void)
67 * ack_APIC_irq() actually gets compiled as a single instruction:
68 * - a single rmw on Pentium/82489DX
69 * - a single write on P6+ cores (CONFIG_X86_GOOD_APIC)
73 /* Docs say use 0 for future compatibility */
74 apic_write_around(APIC_EOI
, 0);
77 extern int get_maxlvt (void);
78 extern void clear_local_APIC (void);
79 extern void connect_bsp_APIC (void);
80 extern void disconnect_bsp_APIC (void);
81 extern void disable_local_APIC (void);
82 extern int verify_local_APIC (void);
83 extern void cache_APIC_registers (void);
84 extern void sync_Arb_IDs (void);
85 extern void init_bsp_APIC (void);
86 extern void setup_local_APIC (void);
87 extern void init_apic_mappings (void);
88 extern void smp_local_timer_interrupt (struct pt_regs
* regs
);
89 extern void setup_boot_APIC_clock (void);
90 extern void setup_secondary_APIC_clock (void);
91 extern void setup_apic_nmi_watchdog (void);
92 extern int reserve_lapic_nmi(void);
93 extern void release_lapic_nmi(void);
94 extern void disable_timer_nmi_watchdog(void);
95 extern void enable_timer_nmi_watchdog(void);
96 extern void nmi_watchdog_tick (struct pt_regs
* regs
, unsigned reason
);
97 extern int APIC_init_uniprocessor (void);
98 extern void disable_APIC_timer(void);
99 extern void enable_APIC_timer(void);
100 extern void clustered_apic_check(void);
102 extern void nmi_watchdog_default(void);
103 extern int setup_nmi_watchdog(char *);
105 extern unsigned int nmi_watchdog
;
106 #define NMI_DEFAULT -1
108 #define NMI_IO_APIC 1
109 #define NMI_LOCAL_APIC 2
110 #define NMI_INVALID 3
112 #endif /* CONFIG_X86_LOCAL_APIC */
114 #define esr_disable 0
115 extern unsigned boot_cpu_id
;
117 #endif /* __ASM_APIC_H */