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
15 #define Dprintk printk
21 #define APIC_VERBOSE 1
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) \
36 extern void generic_apic_probe(void);
38 #ifdef CONFIG_X86_LOCAL_APIC
40 extern unsigned int apic_verbosity;
41 extern int local_apic_timer_c2_ok;
43 extern int ioapic_force;
45 extern int disable_apic;
47 * Basic functions accessing APICs.
49 #ifdef CONFIG_PARAVIRT
50 #include <asm/paravirt.h>
52 #define apic_write native_apic_write
53 #define apic_read native_apic_read
54 #define setup_boot_clock setup_boot_APIC_clock
55 #define setup_secondary_clock setup_secondary_APIC_clock
58 extern int is_vsmp_box(void);
60 static inline void native_apic_write(unsigned long reg, u32 v)
62 volatile u32 *addr = (volatile u32 *)(APIC_BASE + reg);
64 alternative_io("movl %0, %1", "xchgl %0, %1", X86_FEATURE_11AP,
65 ASM_OUTPUT2("=r" (v), "=m" (*addr)),
66 ASM_OUTPUT2("0" (v), "m" (*addr)));
69 static inline u32 native_apic_read(unsigned long reg)
71 return *((volatile u32 *)(APIC_BASE + reg));
74 extern void apic_wait_icr_idle(void);
75 extern u32 safe_apic_wait_icr_idle(void);
76 extern int get_physical_broadcast(void);
78 static inline void ack_APIC_irq(void)
81 * ack_APIC_irq() actually gets compiled as a single instruction:
82 * - a single rmw on Pentium/82489DX
83 * - a single write on P6+ cores (CONFIG_X86_GOOD_APIC)
87 /* Docs say use 0 for future compatibility */
88 apic_write(APIC_EOI, 0);
91 extern int lapic_get_maxlvt(void);
92 extern void clear_local_APIC(void);
93 extern void connect_bsp_APIC(void);
94 extern void disconnect_bsp_APIC(int virt_wire_setup);
95 extern void disable_local_APIC(void);
96 extern void lapic_shutdown(void);
97 extern int verify_local_APIC(void);
98 extern void cache_APIC_registers(void);
99 extern void sync_Arb_IDs(void);
100 extern void init_bsp_APIC(void);
101 extern void setup_local_APIC(void);
102 extern void end_local_APIC_setup(void);
103 extern void init_apic_mappings(void);
104 extern void setup_boot_APIC_clock(void);
105 extern void setup_secondary_APIC_clock(void);
106 extern int APIC_init_uniprocessor(void);
107 extern void enable_NMI_through_LVT0(void);
110 * On 32bit this is mach-xxx local
113 extern void early_init_lapic_mapping(void);
114 extern int apic_is_clustered_box(void);
116 static inline int apic_is_clustered_box(void)
122 extern u8 setup_APIC_eilvt_mce(u8 vector, u8 msg_type, u8 mask);
123 extern u8 setup_APIC_eilvt_ibs(u8 vector, u8 msg_type, u8 mask);
126 #else /* !CONFIG_X86_LOCAL_APIC */
127 static inline void lapic_shutdown(void) { }
128 #define local_apic_timer_c2_ok 1
129 static inline void init_apic_mappings(void) { }
131 #endif /* !CONFIG_X86_LOCAL_APIC */
133 #endif /* __ASM_APIC_H */