V4L/DVB (6715): ivtv: Remove unnecessary register update
[linux-2.6/verdex.git] / include / asm-x86 / apic_32.h
blobbe158b27d54b38854f8c63d713daa83fbdaa3954
1 #ifndef __ASM_APIC_H
2 #define __ASM_APIC_H
4 #include <linux/pm.h>
5 #include <linux/delay.h>
6 #include <asm/fixmap.h>
7 #include <asm/apicdef.h>
8 #include <asm/processor.h>
9 #include <asm/system.h>
11 #define Dprintk(x...)
14 * Debugging macros
16 #define APIC_QUIET 0
17 #define APIC_VERBOSE 1
18 #define APIC_DEBUG 2
20 extern int apic_verbosity;
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) \
30 printk(s, ##a); \
31 } while (0)
34 extern void generic_apic_probe(void);
36 #ifdef CONFIG_X86_LOCAL_APIC
39 * Basic functions accessing APICs.
41 #ifdef CONFIG_PARAVIRT
42 #include <asm/paravirt.h>
43 #else
44 #define apic_write native_apic_write
45 #define apic_write_atomic native_apic_write_atomic
46 #define apic_read native_apic_read
47 #define setup_boot_clock setup_boot_APIC_clock
48 #define setup_secondary_clock setup_secondary_APIC_clock
49 #endif
51 static __inline fastcall void native_apic_write(unsigned long reg,
52 unsigned long v)
54 *((volatile unsigned long *)(APIC_BASE+reg)) = v;
57 static __inline fastcall void native_apic_write_atomic(unsigned long reg,
58 unsigned long v)
60 xchg((volatile unsigned long *)(APIC_BASE+reg), v);
63 static __inline fastcall unsigned long native_apic_read(unsigned long reg)
65 return *((volatile unsigned long *)(APIC_BASE+reg));
68 void apic_wait_icr_idle(void);
69 unsigned long safe_apic_wait_icr_idle(void);
70 int get_physical_broadcast(void);
72 #ifdef CONFIG_X86_GOOD_APIC
73 # define FORCE_READ_AROUND_WRITE 0
74 # define apic_read_around(x)
75 # define apic_write_around(x,y) apic_write((x),(y))
76 #else
77 # define FORCE_READ_AROUND_WRITE 1
78 # define apic_read_around(x) apic_read(x)
79 # define apic_write_around(x,y) apic_write_atomic((x),(y))
80 #endif
82 static inline void ack_APIC_irq(void)
85 * ack_APIC_irq() actually gets compiled as a single instruction:
86 * - a single rmw on Pentium/82489DX
87 * - a single write on P6+ cores (CONFIG_X86_GOOD_APIC)
88 * ... yummie.
91 /* Docs say use 0 for future compatibility */
92 apic_write_around(APIC_EOI, 0);
95 extern int lapic_get_maxlvt(void);
96 extern void clear_local_APIC(void);
97 extern void connect_bsp_APIC (void);
98 extern void disconnect_bsp_APIC (int virt_wire_setup);
99 extern void disable_local_APIC (void);
100 extern void lapic_shutdown (void);
101 extern int verify_local_APIC (void);
102 extern void cache_APIC_registers (void);
103 extern void sync_Arb_IDs (void);
104 extern void init_bsp_APIC (void);
105 extern void setup_local_APIC (void);
106 extern void init_apic_mappings (void);
107 extern void smp_local_timer_interrupt (void);
108 extern void setup_boot_APIC_clock (void);
109 extern void setup_secondary_APIC_clock (void);
110 extern int APIC_init_uniprocessor (void);
112 extern void enable_NMI_through_LVT0 (void * dummy);
114 #define ARCH_APICTIMER_STOPS_ON_C3 1
116 extern int timer_over_8254;
117 extern int local_apic_timer_c2_ok;
119 extern int local_apic_timer_disabled;
121 #else /* !CONFIG_X86_LOCAL_APIC */
122 static inline void lapic_shutdown(void) { }
123 #define local_apic_timer_c2_ok 1
125 #endif /* !CONFIG_X86_LOCAL_APIC */
127 #endif /* __ASM_APIC_H */