Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* 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 | ||
33 | extern 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 | ||
40 | static __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 | ||
39c715b7 | 67 | #define raw_smp_processor_id() (current_thread_info()->cpu) |
1da177e4 | 68 | |
7abea921 DM |
69 | extern void smp_setup_cpu_possible_map(void); |
70 | ||
1da177e4 LT |
71 | #endif /* !(__ASSEMBLY__) */ |
72 | ||
7abea921 DM |
73 | #else |
74 | ||
75 | #define smp_setup_cpu_possible_map() do { } while (0) | |
76 | ||
1da177e4 LT |
77 | #endif /* !(CONFIG_SMP) */ |
78 | ||
79 | #define NO_PROC_ID 0xFF | |
80 | ||
81 | #endif /* !(_SPARC64_SMP_H) */ |