include/asm-x86_64/apic.h

   1 #ifndef __ASM_APIC_H
   2 #define __ASM_APIC_H
   3
   4 #include <linux/config.h>
   5 #include <linux/pm.h>
   6 #include <asm/fixmap.h>
   7 #include <asm/apicdef.h>
   8 #include <asm/system.h>
   9
  10 #define Dprintk(x...)
  11
  12 /*
  13  * Debugging macros
  14  */
  15 #define APIC_QUIET   0
  16 #define APIC_VERBOSE 1
  17 #define APIC_DEBUG   2
  18
  19 extern int apic_verbosity;
  20 extern int apic_runs_main_timer;
  21
  22 /*
  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
  27  */
  28 #define apic_printk(v, s, a...) do {       \
  29                 if ((v) <= apic_verbosity) \
  30                         printk(s, ##a);    \
  31         } while (0)
  32
  33 #ifdef CONFIG_X86_LOCAL_APIC
  34
  35 struct pt_regs;
  36
  37 /*
  38  * Basic functions accessing APICs.
  39  */
  40
  41 static __inline void apic_write(unsigned long reg, unsigned int v)
  42 {
  43         *((volatile unsigned int *)(APIC_BASE+reg)) = v;
  44 }
  45
  46 static __inline unsigned int apic_read(unsigned long reg)
  47 {
  48         return *((volatile unsigned int *)(APIC_BASE+reg));
  49 }
  50
  51 static __inline__ void apic_wait_icr_idle(void)
  52 {
  53         while ( apic_read( APIC_ICR ) & APIC_ICR_BUSY );
  54 }
  55
  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          */
  64
  65         /* Docs say use 0 for future compatibility */
  66         apic_write(APIC_EOI, 0);
  67 }
  68
  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 void setup_apic_nmi_watchdog (void);
  84 extern int reserve_lapic_nmi(void);
  85 extern void release_lapic_nmi(void);
  86 extern void disable_timer_nmi_watchdog(void);
  87 extern void enable_timer_nmi_watchdog(void);
  88 extern void nmi_watchdog_tick (struct pt_regs * regs, unsigned reason);
  89 extern int APIC_init_uniprocessor (void);
  90 extern void disable_APIC_timer(void);
  91 extern void enable_APIC_timer(void);
  92 extern void clustered_apic_check(void);
  93
  94 extern void nmi_watchdog_default(void);
  95 extern int setup_nmi_watchdog(char *);
  96
  97 extern unsigned int nmi_watchdog;
  98 #define NMI_DEFAULT     -1
  99 #define NMI_NONE        0
 100 #define NMI_IO_APIC     1
 101 #define NMI_LOCAL_APIC  2
 102 #define NMI_INVALID     3
 103
 104 extern int disable_timer_pin_1;
 105
 106 extern void setup_threshold_lvt(unsigned long lvt_off);
 107
 108 void smp_send_timer_broadcast_ipi(void);
 109 void switch_APIC_timer_to_ipi(void *cpumask);
 110 void switch_ipi_to_APIC_timer(void *cpumask);
 111
 112 #define ARCH_APICTIMER_STOPS_ON_C3      1
 113
 114 #endif /* CONFIG_X86_LOCAL_APIC */
 115
 116 extern unsigned boot_cpu_id;
 117
 118 #endif /* __ASM_APIC_H */