1 #ifndef _ASM_X86_APIC_H
2 #define _ASM_X86_APIC_H
5 #include <linux/delay.h>
7 #include <asm/alternative.h>
8 #include <asm/fixmap.h>
9 #include <asm/apicdef.h>
10 #include <asm/processor.h>
11 #include <asm/system.h>
13 #define ARCH_APICTIMER_STOPS_ON_C3 1
19 #define APIC_VERBOSE 1
23 * Define the default level of output to be very little
24 * This can be turned up by using apic=verbose for more
25 * information and apic=debug for _lots_ of information.
26 * apic_verbosity is defined in apic.c
28 #define apic_printk(v, s, a...) do { \
29 if ((v) <= apic_verbosity) \
34 extern void generic_apic_probe(void);
36 #ifdef CONFIG_X86_LOCAL_APIC
38 extern unsigned int apic_verbosity;
39 extern int local_apic_timer_c2_ok;
41 extern int ioapic_force;
43 extern int disable_apic;
45 * Basic functions accessing APICs.
47 #ifdef CONFIG_PARAVIRT
48 #include <asm/paravirt.h>
50 #define apic_write native_apic_write
51 #define apic_read native_apic_read
52 #define setup_boot_clock setup_boot_APIC_clock
53 #define setup_secondary_clock setup_secondary_APIC_clock
56 extern int is_vsmp_box(void);
58 static inline void native_apic_write(unsigned long reg, u32 v)
60 volatile u32 *addr = (volatile u32 *)(APIC_BASE + reg);
62 alternative_io("movl %0, %1", "xchgl %0, %1", X86_FEATURE_11AP,
63 ASM_OUTPUT2("=r" (v), "=m" (*addr)),
64 ASM_OUTPUT2("0" (v), "m" (*addr)));
67 static inline u32 native_apic_read(unsigned long reg)
69 return *((volatile u32 *)(APIC_BASE + reg));
72 extern void apic_wait_icr_idle(void);
73 extern u32 safe_apic_wait_icr_idle(void);
74 extern int get_physical_broadcast(void);
76 static inline void ack_APIC_irq(void)
79 * ack_APIC_irq() actually gets compiled as a single instruction:
80 * - a single rmw on Pentium/82489DX
81 * - a single write on P6+ cores (CONFIG_X86_GOOD_APIC)
85 /* Docs say use 0 for future compatibility */
86 apic_write(APIC_EOI, 0);
89 extern int lapic_get_maxlvt(void);
90 extern void clear_local_APIC(void);
91 extern void connect_bsp_APIC(void);
92 extern void disconnect_bsp_APIC(int virt_wire_setup);
93 extern void disable_local_APIC(void);
94 extern void lapic_shutdown(void);
95 extern int verify_local_APIC(void);
96 extern void cache_APIC_registers(void);
97 extern void sync_Arb_IDs(void);
98 extern void init_bsp_APIC(void);
99 extern void setup_local_APIC(void);
100 extern void end_local_APIC_setup(void);
101 extern void init_apic_mappings(void);
102 extern void setup_boot_APIC_clock(void);
103 extern void setup_secondary_APIC_clock(void);
104 extern int APIC_init_uniprocessor(void);
105 extern void enable_NMI_through_LVT0(void);
108 * On 32bit this is mach-xxx local
111 extern void early_init_lapic_mapping(void);
112 extern int apic_is_clustered_box(void);
114 static inline int apic_is_clustered_box(void)
120 extern u8 setup_APIC_eilvt_mce(u8 vector, u8 msg_type, u8 mask);
121 extern u8 setup_APIC_eilvt_ibs(u8 vector, u8 msg_type, u8 mask);
124 #else /* !CONFIG_X86_LOCAL_APIC */
125 static inline void lapic_shutdown(void) { }
126 #define local_apic_timer_c2_ok 1
127 static inline void init_apic_mappings(void) { }
129 #endif /* !CONFIG_X86_LOCAL_APIC */
131 #endif /* __ASM_APIC_H */