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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include <linux/kernel.h> |
| 14 | #include <linux/bitops.h> |
| 15 | #include <linux/errno.h> |
| 16 | #include <linux/cpumask.h> |
| 17 | #include <linux/threads.h> |
| 18 | |
| 19 | #ifdef CONFIG_SMP |
| 20 | |
| 21 | #ifndef __ASSEMBLY__ |
| 22 | |
| 23 | struct cpuinfo_PPC { |
| 24 | unsigned long loops_per_jiffy; |
| 25 | unsigned long pvr; |
| 26 | unsigned long *pgd_cache; |
| 27 | unsigned long *pte_cache; |
| 28 | unsigned long pgtable_cache_sz; |
| 29 | }; |
| 30 | |
| 31 | extern struct cpuinfo_PPC cpu_data[]; |
| 32 | extern cpumask_t cpu_online_map; |
| 33 | extern cpumask_t cpu_possible_map; |
| 34 | extern unsigned long smp_proc_in_lock[]; |
| 35 | extern volatile unsigned long cpu_callin_map[]; |
| 36 | extern int smp_tb_synchronized; |
Paul Mackerras | 0b879a3 | 2005-10-19 23:12:01 +1000 | [diff] [blame] | 37 | extern struct smp_ops_t *smp_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
| 39 | extern void smp_send_tlb_invalidate(int); |
| 40 | extern void smp_send_xmon_break(int cpu); |
| 41 | struct pt_regs; |
Olaf Hering | 40a5f7c | 2006-10-06 23:06:48 +0200 | [diff] [blame] | 42 | extern void smp_message_recv(int); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | |
Paul Mackerras | 3113997 | 2005-09-10 21:13:13 +1000 | [diff] [blame] | 44 | extern int __cpu_disable(void); |
| 45 | extern void __cpu_die(unsigned int cpu); |
| 46 | extern void cpu_die(void) __attribute__((noreturn)); |
| 47 | |
Ingo Molnar | 39c715b | 2005-06-21 17:14:34 -0700 | [diff] [blame] | 48 | #define raw_smp_processor_id() (current_thread_info()->cpu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
| 50 | extern int __cpu_up(unsigned int cpu); |
| 51 | |
| 52 | extern int smp_hw_index[]; |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 53 | #define hard_smp_processor_id() (smp_hw_index[smp_processor_id()]) |
| 54 | #define get_hard_smp_processor_id(cpu) (smp_hw_index[(cpu)]) |
Paul Mackerras | 80579e1 | 2005-10-27 22:42:04 +1000 | [diff] [blame] | 55 | #define set_hard_smp_processor_id(cpu, phys)\ |
| 56 | (smp_hw_index[(cpu)] = (phys)) |
| 57 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | #endif /* __ASSEMBLY__ */ |
| 59 | |
| 60 | #else /* !(CONFIG_SMP) */ |
| 61 | |
Paul Mackerras | 3113997 | 2005-09-10 21:13:13 +1000 | [diff] [blame] | 62 | static inline void cpu_die(void) { } |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 63 | #define get_hard_smp_processor_id(cpu) 0 |
Paul Mackerras | 80579e1 | 2005-10-27 22:42:04 +1000 | [diff] [blame] | 64 | #define set_hard_smp_processor_id(cpu, phys) |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 65 | #define hard_smp_processor_id() 0 |
Paul Mackerras | 3113997 | 2005-09-10 21:13:13 +1000 | [diff] [blame] | 66 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | #endif /* !(CONFIG_SMP) */ |
| 68 | |
Paul Mackerras | 80579e1 | 2005-10-27 22:42:04 +1000 | [diff] [blame] | 69 | #ifndef __ASSEMBLY__ |
| 70 | extern int boot_cpuid; |
| 71 | extern int boot_cpuid_phys; |
| 72 | #endif |
| 73 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | #endif /* !(_PPC_SMP_H) */ |
| 75 | #endif /* __KERNEL__ */ |