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
11static __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
27struct 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
40extern 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
47extern int smp_num_cpus;
48#define cpu_possible_map	cpu_present_map
49
50int 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 hard_smp_processor_id()		0
55#define smp_call_function_on_cpu(func,info,retry,wait,cpu)    ({ 0; })
56
57#endif /* CONFIG_SMP */
58
59#define NO_PROC_ID	(-1)
60
61#endif
62