| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /* smp.h: PPC specific SMP stuff. |
| 2 | * |
| 3 | * Original was a copy of sparc smp.h. Now heavily modified |
| 4 | * for PPC. |
| 5 | * |
| 6 | * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) |
| 7 | * Copyright (C) 1996-2001 Cort Dougan <cort@fsmlabs.com> |
| 8 | */ |
| 9 | #ifdef __KERNEL__ |
| 10 | #ifndef _PPC_SMP_H |
| 11 | #define _PPC_SMP_H |
| 12 | |
| 13 | #include <linux/config.h> |
| 14 | #include <linux/kernel.h> |
| 15 | #include <linux/bitops.h> |
| 16 | #include <linux/errno.h> |
| 17 | #include <linux/cpumask.h> |
| 18 | #include <linux/threads.h> |
| 19 | |
| 20 | #ifdef CONFIG_SMP |
| 21 | |
| 22 | #ifndef __ASSEMBLY__ |
| 23 | |
| 24 | struct cpuinfo_PPC { |
| 25 | unsigned long loops_per_jiffy; |
| 26 | unsigned long pvr; |
| 27 | unsigned long *pgd_cache; |
| 28 | unsigned long *pte_cache; |
| 29 | unsigned long pgtable_cache_sz; |
| 30 | }; |
| 31 | |
| 32 | extern struct cpuinfo_PPC cpu_data[]; |
| 33 | extern cpumask_t cpu_online_map; |
| 34 | extern cpumask_t cpu_possible_map; |
| 35 | extern unsigned long smp_proc_in_lock[]; |
| 36 | extern volatile unsigned long cpu_callin_map[]; |
| 37 | extern int smp_tb_synchronized; |
| 38 | |
| 39 | extern void smp_send_tlb_invalidate(int); |
| 40 | extern void smp_send_xmon_break(int cpu); |
| 41 | struct pt_regs; |
| 42 | extern void smp_message_recv(int, struct pt_regs *); |
| 43 | |
| 44 | #define NO_PROC_ID 0xFF /* No processor magic marker */ |
| 45 | #define PROC_CHANGE_PENALTY 20 |
| 46 | |
| 47 | #define smp_processor_id() (current_thread_info()->cpu) |
| 48 | |
| 49 | extern int __cpu_up(unsigned int cpu); |
| 50 | |
| 51 | extern int smp_hw_index[]; |
| 52 | #define hard_smp_processor_id() (smp_hw_index[smp_processor_id()]) |
| 53 | |
| 54 | struct klock_info_struct { |
| 55 | unsigned long kernel_flag; |
| 56 | unsigned char akp; |
| 57 | }; |
| 58 | |
| 59 | extern struct klock_info_struct klock_info; |
| 60 | #define KLOCK_HELD 0xffffffff |
| 61 | #define KLOCK_CLEAR 0x0 |
| 62 | |
| 63 | #endif /* __ASSEMBLY__ */ |
| 64 | |
| 65 | #else /* !(CONFIG_SMP) */ |
| 66 | |
| 67 | #endif /* !(CONFIG_SMP) */ |
| 68 | |
| 69 | #endif /* !(_PPC_SMP_H) */ |
| 70 | #endif /* __KERNEL__ */ |