ia64/xen-unstable

view linux-2.6-xen-sparse/include/asm-x86_64/apic.h @ 14321:f421ccd1141f

Added section on references vs UUIDs.

Signed-off-by: Ewan Mellor <ewan@xensource.com>
author Ewan Mellor <ewan@xensource.com>
date Fri Mar 09 00:44:10 2007 +0000 (2007-03-09)
parents 3adf00179a63
children
line source
1 #ifndef __ASM_APIC_H
2 #define __ASM_APIC_H
4 #include <linux/pm.h>
5 #include <asm/fixmap.h>
6 #include <asm/apicdef.h>
7 #include <asm/system.h>
9 #define Dprintk(x...)
11 /*
12 * Debugging macros
13 */
14 #define APIC_QUIET 0
15 #define APIC_VERBOSE 1
16 #define APIC_DEBUG 2
18 extern int apic_verbosity;
19 extern int apic_runs_main_timer;
21 /*
22 * Define the default level of output to be very little
23 * This can be turned up by using apic=verbose for more
24 * information and apic=debug for _lots_ of information.
25 * apic_verbosity is defined in apic.c
26 */
27 #define apic_printk(v, s, a...) do { \
28 if ((v) <= apic_verbosity) \
29 printk(s, ##a); \
30 } while (0)
32 #ifdef CONFIG_X86_LOCAL_APIC
34 struct pt_regs;
36 /*
37 * Basic functions accessing APICs.
38 */
40 static __inline void apic_write(unsigned long reg, unsigned int v)
41 {
42 *((volatile unsigned int *)(APIC_BASE+reg)) = v;
43 }
45 static __inline unsigned int apic_read(unsigned long reg)
46 {
47 return *((volatile unsigned int *)(APIC_BASE+reg));
48 }
50 static __inline__ void apic_wait_icr_idle(void)
51 {
52 while (apic_read( APIC_ICR ) & APIC_ICR_BUSY)
53 cpu_relax();
54 }
56 static inline void ack_APIC_irq(void)
57 {
58 /*
59 * ack_APIC_irq() actually gets compiled as a single instruction:
60 * - a single rmw on Pentium/82489DX
61 * - a single write on P6+ cores (CONFIG_X86_GOOD_APIC)
62 * ... yummie.
63 */
65 /* Docs say use 0 for future compatibility */
66 apic_write(APIC_EOI, 0);
67 }
69 extern int get_maxlvt (void);
70 extern void clear_local_APIC (void);
71 extern void connect_bsp_APIC (void);
72 extern void disconnect_bsp_APIC (int virt_wire_setup);
73 extern void disable_local_APIC (void);
74 extern int verify_local_APIC (void);
75 extern void cache_APIC_registers (void);
76 extern void sync_Arb_IDs (void);
77 extern void init_bsp_APIC (void);
78 extern void setup_local_APIC (void);
79 extern void init_apic_mappings (void);
80 extern void smp_local_timer_interrupt (struct pt_regs * regs);
81 extern void setup_boot_APIC_clock (void);
82 extern void setup_secondary_APIC_clock (void);
83 extern int APIC_init_uniprocessor (void);
84 extern void disable_APIC_timer(void);
85 extern void enable_APIC_timer(void);
86 extern void clustered_apic_check(void);
88 extern void setup_APIC_extened_lvt(unsigned char lvt_off, unsigned char vector,
89 unsigned char msg_type, unsigned char mask);
91 #define K8_APIC_EXT_LVT_BASE 0x500
92 #define K8_APIC_EXT_INT_MSG_FIX 0x0
93 #define K8_APIC_EXT_INT_MSG_SMI 0x2
94 #define K8_APIC_EXT_INT_MSG_NMI 0x4
95 #define K8_APIC_EXT_INT_MSG_EXT 0x7
96 #define K8_APIC_EXT_LVT_ENTRY_THRESHOLD 0
98 extern int disable_timer_pin_1;
101 #ifndef CONFIG_XEN
102 void smp_send_timer_broadcast_ipi(void);
103 void switch_APIC_timer_to_ipi(void *cpumask);
104 void switch_ipi_to_APIC_timer(void *cpumask);
106 #define ARCH_APICTIMER_STOPS_ON_C3 1
107 #endif
109 #endif /* CONFIG_X86_LOCAL_APIC */
111 extern unsigned boot_cpu_id;
113 #endif /* __ASM_APIC_H */