source: trunk/packages/xen-3.1/xen-3.1/linux-2.6-xen-sparse/include/asm-x86_64/apic.h @ 34

Last change on this file since 34 was 34, checked in by hartmans, 18 years ago

Add xen and xen-common
File size: 2.7 KB
Line 
1#ifndef __ASM_APIC_H
2#define __ASM_APIC_H
3
4#include <linux/pm.h>
5#include <asm/fixmap.h>
6#include <asm/apicdef.h>
7#include <asm/system.h>
8
9#define Dprintk(x...)
10
11/*
12 * Debugging macros
13 */
14#define APIC_QUIET   0
15#define APIC_VERBOSE 1
16#define APIC_DEBUG   2
17
18extern int apic_verbosity;
19extern int apic_runs_main_timer;
20
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)
31
32#ifdef CONFIG_X86_LOCAL_APIC
33
34struct pt_regs;
35
36/*
37 * Basic functions accessing APICs.
38 */
39
40static __inline void apic_write(unsigned long reg, unsigned int v)
41{
42        *((volatile unsigned int *)(APIC_BASE+reg)) = v;
43}
44
45static __inline unsigned int apic_read(unsigned long reg)
46{
47        return *((volatile unsigned int *)(APIC_BASE+reg));
48}
49
50static __inline__ void apic_wait_icr_idle(void)
51{
52        while (apic_read( APIC_ICR ) & APIC_ICR_BUSY)
53                cpu_relax();
54}
55
56static 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         */
64
65        /* Docs say use 0 for future compatibility */
66        apic_write(APIC_EOI, 0);
67}
68
69extern int get_maxlvt (void);
70extern void clear_local_APIC (void);
71extern void connect_bsp_APIC (void);
72extern void disconnect_bsp_APIC (int virt_wire_setup);
73extern void disable_local_APIC (void);
74extern int verify_local_APIC (void);
75extern void cache_APIC_registers (void);
76extern void sync_Arb_IDs (void);
77extern void init_bsp_APIC (void);
78extern void setup_local_APIC (void);
79extern void init_apic_mappings (void);
80extern void smp_local_timer_interrupt (struct pt_regs * regs);
81extern void setup_boot_APIC_clock (void);
82extern void setup_secondary_APIC_clock (void);
83extern int APIC_init_uniprocessor (void);
84extern void disable_APIC_timer(void);
85extern void enable_APIC_timer(void);
86extern void clustered_apic_check(void);
87
88extern void setup_APIC_extened_lvt(unsigned char lvt_off, unsigned char vector,
89                                   unsigned char msg_type, unsigned char mask);
90
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
97
98extern int disable_timer_pin_1;
99
100
101#ifndef CONFIG_XEN
102void smp_send_timer_broadcast_ipi(void);
103void switch_APIC_timer_to_ipi(void *cpumask);
104void switch_ipi_to_APIC_timer(void *cpumask);
105
106#define ARCH_APICTIMER_STOPS_ON_C3      1
107#endif
108
109#endif /* CONFIG_X86_LOCAL_APIC */
110
111extern unsigned boot_cpu_id;
112
113#endif /* __ASM_APIC_H */
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