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[linux-2.6-omap-h63xx.git] / include / asm-alpha / smp.h
1 #ifndef __ASM_SMP_H
2 #define __ASM_SMP_H
3
4 #include <linux/threads.h>
5 #include <linux/cpumask.h>
6 #include <linux/bitops.h>
7 #include <asm/pal.h>
8
9 /* HACK: Cabrio WHAMI return value is bogus if more than 8 bits used.. :-( */
10
11 static __inline__ unsigned char
12 __hard_smp_processor_id(void)
13 {
14         register unsigned char __r0 __asm__("$0");
15         __asm__ __volatile__(
16                 "call_pal %1 #whami"
17                 : "=r"(__r0)
18                 :"i" (PAL_whami)
19                 : "$1", "$22", "$23", "$24", "$25");
20         return __r0;
21 }
22
23 #ifdef CONFIG_SMP
24
25 #include <asm/irq.h>
26
27 struct cpuinfo_alpha {
28         unsigned long loops_per_jiffy;
29         unsigned long last_asn;
30         int need_new_asn;
31         int asn_lock;
32         unsigned long ipi_count;
33         unsigned long prof_multiplier;
34         unsigned long prof_counter;
35         unsigned char mcheck_expected;
36         unsigned char mcheck_taken;
37         unsigned char mcheck_extra;
38 } __attribute__((aligned(64)));
39
40 extern struct cpuinfo_alpha cpu_data[NR_CPUS];
41
42 #define PROC_CHANGE_PENALTY     20
43
44 #define hard_smp_processor_id() __hard_smp_processor_id()
45 #define raw_smp_processor_id()  (current_thread_info()->cpu)
46
47 extern int smp_num_cpus;
48 #define cpu_possible_map        cpu_present_map
49
50 int smp_call_function_on_cpu(void (*func) (void *info), void *info,int retry, int wait, cpumask_t cpu);
51
52 #else /* CONFIG_SMP */
53
54 #define smp_call_function_on_cpu(func,info,retry,wait,cpu)    ({ 0; })
55
56 #endif /* CONFIG_SMP */
57
58 #define NO_PROC_ID      (-1)
59
60 #endif