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/processor.h> 9 #include <asm/system.h> 10 11 #define Dprintk(x...) 12 13 /* 14 * Debugging macros 15 */ 16 #define APIC_QUIET 0 17 #define APIC_VERBOSE 1 18 #define APIC_DEBUG 2 19 20 extern int apic_verbosity; 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 34 extern void generic_apic_probe(void); 35 36 #ifdef CONFIG_X86_LOCAL_APIC 37 38 /* 39 * Basic functions accessing APICs. 40 */ 41 #ifdef CONFIG_PARAVIRT 42 #include <asm/paravirt.h> 43 #else 44 #define apic_write native_apic_write 45 #define apic_write_atomic native_apic_write_atomic 46 #define apic_read native_apic_read 47 #define setup_boot_clock setup_boot_APIC_clock 48 #define setup_secondary_clock setup_secondary_APIC_clock 49 #endif 50 51 static __inline fastcall void native_apic_write(unsigned long reg, 52 unsigned long v) 53 { 54 *((volatile unsigned long *)(APIC_BASE+reg)) = v; 55 } 56 57 static __inline fastcall void native_apic_write_atomic(unsigned long reg, 58 unsigned long v) 59 { 60 xchg((volatile unsigned long *)(APIC_BASE+reg), v); 61 } 62 63 static __inline fastcall unsigned long native_apic_read(unsigned long reg) 64 { 65 return *((volatile unsigned long *)(APIC_BASE+reg)); 66 } 67 68 void apic_wait_icr_idle(void); 69 unsigned long safe_apic_wait_icr_idle(void); 70 int get_physical_broadcast(void); 71 72 #ifdef CONFIG_X86_GOOD_APIC 73 # define FORCE_READ_AROUND_WRITE 0 74 # define apic_read_around(x) 75 # define apic_write_around(x,y) apic_write((x),(y)) 76 #else 77 # define FORCE_READ_AROUND_WRITE 1 78 # define apic_read_around(x) apic_read(x) 79 # define apic_write_around(x,y) apic_write_atomic((x),(y)) 80 #endif 81 82 static inline void ack_APIC_irq(void) 83 { 84 /* 85 * ack_APIC_irq() actually gets compiled as a single instruction: 86 * - a single rmw on Pentium/82489DX 87 * - a single write on P6+ cores (CONFIG_X86_GOOD_APIC) 88 * ... yummie. 89 */ 90 91 /* Docs say use 0 for future compatibility */ 92 apic_write_around(APIC_EOI, 0); 93 } 94 95 extern int lapic_get_maxlvt(void); 96 extern void clear_local_APIC(void); 97 extern void connect_bsp_APIC (void); 98 extern void disconnect_bsp_APIC (int virt_wire_setup); 99 extern void disable_local_APIC (void); 100 extern void lapic_shutdown (void); 101 extern int verify_local_APIC (void); 102 extern void cache_APIC_registers (void); 103 extern void sync_Arb_IDs (void); 104 extern void init_bsp_APIC (void); 105 extern void setup_local_APIC (void); 106 extern void init_apic_mappings (void); 107 extern void smp_local_timer_interrupt (void); 108 extern void setup_boot_APIC_clock (void); 109 extern void setup_secondary_APIC_clock (void); 110 extern int APIC_init_uniprocessor (void); 111 112 extern void enable_NMI_through_LVT0 (void * dummy); 113 114 #define ARCH_APICTIMER_STOPS_ON_C3 1 115 116 extern int timer_over_8254; 117 extern int local_apic_timer_c2_ok; 118 119 extern int local_apic_timer_disabled; 120 121 #else /* !CONFIG_X86_LOCAL_APIC */ 122 static inline void lapic_shutdown(void) { } 123 #define local_apic_timer_c2_ok 1 124 125 #endif /* !CONFIG_X86_LOCAL_APIC */ 126 127 #endif /* __ASM_APIC_H */ 128
