include/asm-x86_64/apic.h

   1 #ifndef __ASM_APIC_H
   2 #define __ASM_APIC_H
   3
   4 #include <linux/pm.h>
   5 #include <linux/delay.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 extern int ioapic_force;
  22 extern int apic_mapped;
  23
  24 /*
  25  * Define the default level of output to be very little
  26  * This can be turned up by using apic=verbose for more
  27  * information and apic=debug for _lots_ of information.
  28  * apic_verbosity is defined in apic.c
  29  */
  30 #define apic_printk(v, s, a...) do {       \
  31                 if ((v) <= apic_verbosity) \
  32                         printk(s, ##a);    \
  33         } while (0)
  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 extern void apic_wait_icr_idle(void);
  52 extern unsigned int safe_apic_wait_icr_idle(void);
  53
  54 static inline void ack_APIC_irq(void)
  55 {
  56         /*
  57          * ack_APIC_irq() actually gets compiled as a single instruction:
  58          * - a single rmw on Pentium/82489DX
  59          * - a single write on P6+ cores (CONFIG_X86_GOOD_APIC)
  60          * ... yummie.
  61          */
  62
  63         /* Docs say use 0 for future compatibility */
  64         apic_write(APIC_EOI, 0);
  65 }
  66
  67 extern int get_maxlvt (void);
  68 extern void clear_local_APIC (void);
  69 extern void connect_bsp_APIC (void);
  70 extern void disconnect_bsp_APIC (int virt_wire_setup);
  71 extern void disable_local_APIC (void);
  72 extern int verify_local_APIC (void);
  73 extern void cache_APIC_registers (void);
  74 extern void sync_Arb_IDs (void);
  75 extern void init_bsp_APIC (void);
  76 extern void setup_local_APIC (void);
  77 extern void init_apic_mappings (void);
  78 extern void smp_local_timer_interrupt (void);
  79 extern void setup_boot_APIC_clock (void);
  80 extern void setup_secondary_APIC_clock (void);
  81 extern int APIC_init_uniprocessor (void);
  82 extern void disable_APIC_timer(void);
  83 extern void enable_APIC_timer(void);
  84 extern void setup_apic_routing(void);
  85
  86 extern void setup_APIC_extened_lvt(unsigned char lvt_off, unsigned char vector,
  87                                    unsigned char msg_type, unsigned char mask);
  88
  89 #define K8_APIC_EXT_LVT_BASE    0x500
  90 #define K8_APIC_EXT_INT_MSG_FIX 0x0
  91 #define K8_APIC_EXT_INT_MSG_SMI 0x2
  92 #define K8_APIC_EXT_INT_MSG_NMI 0x4
  93 #define K8_APIC_EXT_INT_MSG_EXT 0x7
  94 #define K8_APIC_EXT_LVT_ENTRY_THRESHOLD    0
  95
  96 void smp_send_timer_broadcast_ipi(void);
  97 void switch_APIC_timer_to_ipi(void *cpumask);
  98 void switch_ipi_to_APIC_timer(void *cpumask);
  99
 100 #define ARCH_APICTIMER_STOPS_ON_C3      1
 101
 102 extern unsigned boot_cpu_id;
 103 extern int local_apic_timer_c2_ok;
 104
 105 #endif /* __ASM_APIC_H */