5 * We need the APIC definitions automatically as part of 'smp.h'
8 /* #include <linux/threads.h>s */
9 #include <lwk/cpumask.h>
10 #include <lwk/bitops.h>
11 extern int disable_apic;
15 #include <arch/fixmap.h>
16 //#include <asm/mpspec.h>
17 //#include <asm/io_apic.h>
18 #include <arch/apic.h>
19 //#include <asm/thread_info.h>
24 extern cpumask_t cpu_present_mask;
25 extern cpumask_t cpu_possible_map;
26 extern cpumask_t cpu_online_map;
27 extern cpumask_t cpu_callout_map;
28 extern cpumask_t cpu_initialized;
31 * Private routines/data
34 extern void smp_alloc_memory(void);
35 extern volatile unsigned long smp_invalidate_needed;
37 extern void lock_ipi_call_lock(void);
38 extern void unlock_ipi_call_lock(void);
39 extern int smp_num_siblings;
40 extern void smp_send_reschedule(int cpu);
41 void smp_stop_cpu(void);
42 extern int smp_call_function_single(int cpuid, void (*func) (void *info),
43 void *info, int retry, int wait);
45 extern cpumask_t cpu_sibling_map[NR_CPUS];
46 extern cpumask_t cpu_core_map[NR_CPUS];
47 extern uint16_t phys_proc_id[NR_CPUS];
48 extern uint16_t cpu_core_id[NR_CPUS];
49 extern uint16_t cpu_llc_id[NR_CPUS];
51 #define SMP_TRAMPOLINE_BASE 0x6000
54 * On x86 all CPUs are mapped 1:1 to the APIC space.
55 * This simplifies scheduling and IPI sending and
56 * compresses data structures.
59 static inline int num_booting_cpus(void)
61 return cpus_weight(cpu_callout_map);
64 #define raw_smp_processor_id() read_pda(cpunumber)
66 static inline int hard_smp_processor_id(void)
68 /* we don't want to mark this access volatile - bad code generation */
69 return GET_APIC_ID(*(unsigned int *)(APIC_BASE+APIC_ID));
72 extern int safe_smp_processor_id(void);
73 extern int __cpu_disable(void);
74 extern void __cpu_die(unsigned int cpu);
75 extern void prefill_possible_map(void);
76 extern unsigned num_processors;
77 extern unsigned disabled_cpus;
79 #endif /* !ASSEMBLY */
81 #define NO_PROC_ID 0xFF /* No processor magic marker */
86 * Some lowlevel functions might want to know about
87 * the real APIC ID <-> CPU # mapping.
89 extern u8 x86_cpu_to_apicid[NR_CPUS]; /* physical ID */
90 extern u8 x86_cpu_to_log_apicid[NR_CPUS];
91 extern u8 bios_cpu_apicid[];
93 static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
95 return cpus_addr(cpumask)[0];
98 static inline int cpu_present_to_apicid(int mps_cpu)
100 if (mps_cpu < NR_CPUS)
101 return (int)bios_cpu_apicid[mps_cpu];
106 #endif /* !ASSEMBLY */
108 #include <lwk/task.h>
109 #define stack_smp_processor_id() \
111 struct task_struct *task; \
112 __asm__("andq %%rsp,%0; ":"=r" (task) : "0" (CURRENT_MASK)); \
117 static __inline int logical_smp_processor_id(void)
119 /* we don't want to mark this access volatile - bad code generation */
120 return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR));
124 #define cpu_physical_id(cpu) x86_cpu_to_apicid[cpu]