Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #ifndef __ASM_SMP_H |
2 | #define __ASM_SMP_H | |
3 | ||
1da177e4 LT |
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() | |
39c715b7 | 45 | #define raw_smp_processor_id() (current_thread_info()->cpu) |
1da177e4 | 46 | |
1da177e4 | 47 | extern int smp_num_cpus; |
c7d2d28b | 48 | #define cpu_possible_map cpu_present_map |
1da177e4 | 49 | |
c524a1d8 JA |
50 | extern void arch_send_call_function_single_ipi(int cpu); |
51 | extern void arch_send_call_function_ipi(cpumask_t mask); | |
1da177e4 LT |
52 | |
53 | #else /* CONFIG_SMP */ | |
54 | ||
2f4dfe20 | 55 | #define hard_smp_processor_id() 0 |
2ac6608c | 56 | #define smp_call_function_on_cpu(func,info,retry,wait,cpu) ({ 0; }) |
1da177e4 LT |
57 | |
58 | #endif /* CONFIG_SMP */ | |
59 | ||
60 | #define NO_PROC_ID (-1) | |
61 | ||
62 | #endif |