blob: 110a2de891239407ff048772b920fa531119a7eb [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* smp.h: Sparc64 specific SMP stuff.
2 *
3 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
4 */
5
6#ifndef _SPARC64_SMP_H
7#define _SPARC64_SMP_H
8
9#include <linux/config.h>
10#include <linux/threads.h>
11#include <asm/asi.h>
12#include <asm/starfire.h>
13#include <asm/spitfire.h>
14
15#ifndef __ASSEMBLY__
16
17#include <linux/cpumask.h>
18#include <linux/cache.h>
19
20#endif /* !(__ASSEMBLY__) */
21
22#ifdef CONFIG_SMP
23
24#ifndef __ASSEMBLY__
25
26/*
27 * Private routines/data
28 */
29
30#include <asm/bitops.h>
31#include <asm/atomic.h>
32
33extern cpumask_t phys_cpu_present_map;
34#define cpu_possible_map phys_cpu_present_map
35
36/*
37 * General functions that each host system must provide.
38 */
39
40static __inline__ int hard_smp_processor_id(void)
41{
42 if (tlb_type == cheetah || tlb_type == cheetah_plus) {
43 unsigned long cfg, ver;
44 __asm__ __volatile__("rdpr %%ver, %0" : "=r" (ver));
45 if ((ver >> 32) == 0x003e0016) {
46 __asm__ __volatile__("ldxa [%%g0] %1, %0"
47 : "=r" (cfg)
48 : "i" (ASI_JBUS_CONFIG));
49 return ((cfg >> 17) & 0x1f);
50 } else {
51 __asm__ __volatile__("ldxa [%%g0] %1, %0"
52 : "=r" (cfg)
53 : "i" (ASI_SAFARI_CONFIG));
54 return ((cfg >> 17) & 0x3ff);
55 }
56 } else if (this_is_starfire != 0) {
57 return starfire_hard_smp_processor_id();
58 } else {
59 unsigned long upaconfig;
60 __asm__ __volatile__("ldxa [%%g0] %1, %0"
61 : "=r" (upaconfig)
62 : "i" (ASI_UPA_CONFIG));
63 return ((upaconfig >> 17) & 0x1f);
64 }
65}
66
Ingo Molnar39c715b2005-06-21 17:14:34 -070067#define raw_smp_processor_id() (current_thread_info()->cpu)
Linus Torvalds1da177e2005-04-16 15:20:36 -070068
69#endif /* !(__ASSEMBLY__) */
70
71#endif /* !(CONFIG_SMP) */
72
73#define NO_PROC_ID 0xFF
74
75#endif /* !(_SPARC64_SMP_H) */