| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
| Ingo Molnar | 39c715b | 2005-06-21 17:14:34 -0700 | [diff] [blame^] | 67 | #define raw_smp_processor_id() (current_thread_info()->cpu) |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
| 69 | #endif /* !(__ASSEMBLY__) */ |
| 70 | |
| 71 | #endif /* !(CONFIG_SMP) */ |
| 72 | |
| 73 | #define NO_PROC_ID 0xFF |
| 74 | |
| 75 | #endif /* !(_SPARC64_SMP_H) */ |