81335e95365b5e14dbeafe86fcc1ede142251651
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
;
24 * Define the default level of output to be very little
25 * This can be turned up by using apic=verbose for more
26 * information and apic=debug for _lots_ of information.
27 * apic_verbosity is defined in apic.c
29 #define apic_printk(v, s, a...) do { \
30 if ((v) <= apic_verbosity) \
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 extern void apic_wait_icr_idle(void);
51 extern unsigned int safe_apic_wait_icr_idle(void);
53 static inline void ack_APIC_irq(void)
56 * ack_APIC_irq() actually gets compiled as a single instruction:
57 * - a single rmw on Pentium/82489DX
58 * - a single write on P6+ cores (CONFIG_X86_GOOD_APIC)
62 /* Docs say use 0 for future compatibility */
63 apic_write(APIC_EOI
, 0);
66 extern int get_maxlvt (void);
67 extern void clear_local_APIC (void);
68 extern void connect_bsp_APIC (void);
69 extern void disconnect_bsp_APIC (int virt_wire_setup
);
70 extern void disable_local_APIC (void);
71 extern int verify_local_APIC (void);
72 extern void cache_APIC_registers (void);
73 extern void sync_Arb_IDs (void);
74 extern void init_bsp_APIC (void);
75 extern void setup_local_APIC (void);
76 extern void init_apic_mappings (void);
77 extern void smp_local_timer_interrupt (void);
78 extern void setup_boot_APIC_clock (void);
79 extern void setup_secondary_APIC_clock (void);
80 extern int APIC_init_uniprocessor (void);
81 extern void disable_APIC_timer(void);
82 extern void enable_APIC_timer(void);
83 extern void setup_apic_routing(void);
85 extern void setup_APIC_extended_lvt(unsigned char lvt_off
, unsigned char vector
,
86 unsigned char msg_type
, unsigned char mask
);
88 extern int apic_is_clustered_box(void);
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 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
;
104 extern int local_apic_timer_c2_ok
;
106 #endif /* __ASM_APIC_H */
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