ia64/xen-unstable

view linux-2.6-xen-sparse/include/asm-i386/apic.h @ 8921:5b4ff470dcc6

Add include/asm-{i386,x86_64}/apic.h to sparse tree.

Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
author cl349@firebug.cl.cam.ac.uk
date Mon Feb 20 10:26:39 2006 +0000 (2006-02-20)
parents
children 832649128a0c
line source
1 #ifndef __ASM_APIC_H
2 #define __ASM_APIC_H
4 #include <linux/config.h>
5 #include <linux/pm.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...)
13 /*
14 * Debugging macros
15 */
16 #define APIC_QUIET 0
17 #define APIC_VERBOSE 1
18 #define APIC_DEBUG 2
20 extern int enable_local_apic;
21 extern int apic_verbosity;
23 static inline void lapic_disable(void)
24 {
25 enable_local_apic = -1;
26 clear_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability);
27 }
29 static inline void lapic_enable(void)
30 {
31 enable_local_apic = 1;
32 }
34 /*
35 * Define the default level of output to be very little
36 * This can be turned up by using apic=verbose for more
37 * information and apic=debug for _lots_ of information.
38 * apic_verbosity is defined in apic.c
39 */
40 #define apic_printk(v, s, a...) do { \
41 if ((v) <= apic_verbosity) \
42 printk(s, ##a); \
43 } while (0)
46 #ifdef CONFIG_X86_LOCAL_APIC
48 /*
49 * Basic functions accessing APICs.
50 */
52 static __inline void apic_write(unsigned long reg, unsigned long v)
53 {
54 *((volatile unsigned long *)(APIC_BASE+reg)) = v;
55 }
57 static __inline void apic_write_atomic(unsigned long reg, unsigned long v)
58 {
59 xchg((volatile unsigned long *)(APIC_BASE+reg), v);
60 }
62 static __inline unsigned long apic_read(unsigned long reg)
63 {
64 return *((volatile unsigned long *)(APIC_BASE+reg));
65 }
67 static __inline__ void apic_wait_icr_idle(void)
68 {
69 while ( apic_read( APIC_ICR ) & APIC_ICR_BUSY )
70 cpu_relax();
71 }
73 int get_physical_broadcast(void);
75 #ifdef CONFIG_X86_GOOD_APIC
76 # define FORCE_READ_AROUND_WRITE 0
77 # define apic_read_around(x)
78 # define apic_write_around(x,y) apic_write((x),(y))
79 #else
80 # define FORCE_READ_AROUND_WRITE 1
81 # define apic_read_around(x) apic_read(x)
82 # define apic_write_around(x,y) apic_write_atomic((x),(y))
83 #endif
85 static inline void ack_APIC_irq(void)
86 {
87 /*
88 * ack_APIC_irq() actually gets compiled as a single instruction:
89 * - a single rmw on Pentium/82489DX
90 * - a single write on P6+ cores (CONFIG_X86_GOOD_APIC)
91 * ... yummie.
92 */
94 /* Docs say use 0 for future compatibility */
95 apic_write_around(APIC_EOI, 0);
96 }
98 extern void (*wait_timer_tick)(void);
100 extern int get_maxlvt(void);
101 extern void clear_local_APIC(void);
102 extern void connect_bsp_APIC (void);
103 extern void disconnect_bsp_APIC (int virt_wire_setup);
104 extern void disable_local_APIC (void);
105 extern void lapic_shutdown (void);
106 extern int verify_local_APIC (void);
107 extern void cache_APIC_registers (void);
108 extern void sync_Arb_IDs (void);
109 extern void init_bsp_APIC (void);
110 extern void setup_local_APIC (void);
111 extern void init_apic_mappings (void);
112 extern void smp_local_timer_interrupt (struct pt_regs * regs);
113 extern void setup_boot_APIC_clock (void);
114 extern void setup_secondary_APIC_clock (void);
115 extern void setup_apic_nmi_watchdog (void);
116 extern int reserve_lapic_nmi(void);
117 extern void release_lapic_nmi(void);
118 extern void disable_timer_nmi_watchdog(void);
119 extern void enable_timer_nmi_watchdog(void);
120 extern void nmi_watchdog_tick (struct pt_regs * regs);
121 extern int APIC_init_uniprocessor (void);
122 extern void disable_APIC_timer(void);
123 extern void enable_APIC_timer(void);
125 extern void enable_NMI_through_LVT0 (void * dummy);
127 extern unsigned int nmi_watchdog;
128 #define NMI_NONE 0
129 #define NMI_IO_APIC 1
130 #define NMI_LOCAL_APIC 2
131 #define NMI_INVALID 3
133 extern int disable_timer_pin_1;
135 void smp_send_timer_broadcast_ipi(struct pt_regs *regs);
136 void switch_APIC_timer_to_ipi(void *cpumask);
137 void switch_ipi_to_APIC_timer(void *cpumask);
138 #define ARCH_APICTIMER_STOPS_ON_C3 1
140 #else /* !CONFIG_X86_LOCAL_APIC */
141 static inline void lapic_shutdown(void) { }
143 #endif /* !CONFIG_X86_LOCAL_APIC */
145 #endif /* __ASM_APIC_H */