5 #include <linux/delay.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
;
20 extern int apic_runs_main_timer
;
21 extern int ioapic_force
;
22 extern int disable_apic_timer
;
25 * Define the default level of output to be very little
26 * This can be turned up by using apic=verbose for more
27 * information and apic=debug for _lots_ of information.
28 * apic_verbosity is defined in apic.c
30 #define apic_printk(v, s, a...) do { \
31 if ((v) <= apic_verbosity) \
38 * Basic functions accessing APICs.
41 static __inline
void apic_write(unsigned long reg
, unsigned int v
)
43 *((volatile unsigned int *)(APIC_BASE
+reg
)) = v
;
46 static __inline
unsigned int apic_read(unsigned long reg
)
48 return *((volatile unsigned int *)(APIC_BASE
+reg
));
51 extern void apic_wait_icr_idle(void);
52 extern unsigned int safe_apic_wait_icr_idle(void);
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 (void);
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 setup_apic_routing(void);
84 extern void setup_APIC_extended_lvt(unsigned char lvt_off
, unsigned char vector
,
85 unsigned char msg_type
, unsigned char mask
);
87 extern int apic_is_clustered_box(void);
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 #define ARCH_APICTIMER_STOPS_ON_C3 1
98 extern unsigned boot_cpu_id
;
99 extern int local_apic_timer_c2_ok
;
101 #endif /* __ASM_APIC_H */