include/asm-x86_64/apic.h

   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
  18 extern int apic_verbosity;
  19 extern int apic_runs_main_timer;
  20 extern int ioapic_force;
  21 extern int apic_mapped;
  22
  23 /*
  24  * Define the default level of output to be very little
  25  * This can be turned up by using apic=verbose for more
  26  * information and apic=debug for _lots_ of information.
  27  * apic_verbosity is defined in apic.c
  28  */
  29 #define apic_printk(v, s, a...) do {       \
  30                 if ((v) <= apic_verbosity) \
  31                         printk(s, ##a);    \
  32         } while (0)
  33
  34 struct pt_regs;
  35
  36 /*
  37  * Basic functions accessing APICs.
  38  */
  39
  40 static __inline void apic_write(unsigned long reg, unsigned int v)
  41 {
  42         *((volatile unsigned int *)(APIC_BASE+reg)) = v;
  43 }
  44
  45 static __inline unsigned int apic_read(unsigned long reg)
  46 {
  47         return *((volatile unsigned int *)(APIC_BASE+reg));
  48 }
  49
  50 static __inline__ void apic_wait_icr_idle(void)
  51 {
  52         while (apic_read( APIC_ICR ) & APIC_ICR_BUSY)
  53                 cpu_relax();
  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 (void);
  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);
  87
  88 extern 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
  98 void smp_send_timer_broadcast_ipi(void);
  99 void switch_APIC_timer_to_ipi(void *cpumask);
 100 void switch_ipi_to_APIC_timer(void *cpumask);
 101
 102 #define ARCH_APICTIMER_STOPS_ON_C3      1
 103
 104 extern unsigned boot_cpu_id;
 105 extern int local_apic_timer_c2_ok;
 106
 107 #endif /* __ASM_APIC_H */