| /* smp.h: PPC specific SMP stuff. |
| * |
| * Original was a copy of sparc smp.h. Now heavily modified |
| * for PPC. |
| * |
| * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) |
| * Copyright (C) 1996-2001 Cort Dougan <cort@fsmlabs.com> |
| */ |
| #ifdef __KERNEL__ |
| #ifndef _PPC_SMP_H |
| #define _PPC_SMP_H |
| |
| #include <linux/config.h> |
| #include <linux/kernel.h> |
| |
| #ifdef CONFIG_SMP |
| |
| #ifndef __ASSEMBLY__ |
| |
| struct cpuinfo_PPC { |
| unsigned long loops_per_jiffy; |
| unsigned long pvr; |
| unsigned long *pgd_cache; |
| unsigned long *pte_cache; |
| unsigned long pgtable_cache_sz; |
| }; |
| |
| extern struct cpuinfo_PPC cpu_data[NR_CPUS]; |
| extern unsigned long cpu_online_map; |
| extern unsigned long smp_proc_in_lock[NR_CPUS]; |
| extern volatile unsigned long cpu_callin_map[NR_CPUS]; |
| extern int smp_tb_synchronized; |
| |
| extern void smp_store_cpu_info(int id); |
| extern void smp_send_tlb_invalidate(int); |
| extern void smp_send_xmon_break(int cpu); |
| struct pt_regs; |
| extern void smp_message_recv(int, struct pt_regs *); |
| extern void smp_local_timer_interrupt(struct pt_regs *); |
| |
| #define NO_PROC_ID 0xFF /* No processor magic marker */ |
| #define PROC_CHANGE_PENALTY 20 |
| |
| /* 1 to 1 mapping on PPC -- Cort */ |
| #define cpu_logical_map(cpu) (cpu) |
| #define cpu_number_map(x) (x) |
| |
| #define smp_processor_id() (current->processor) |
| |
| extern int smp_hw_index[NR_CPUS]; |
| #define hard_smp_processor_id() (smp_hw_index[smp_processor_id()]) |
| |
| struct klock_info_struct { |
| unsigned long kernel_flag; |
| unsigned char akp; |
| }; |
| |
| extern struct klock_info_struct klock_info; |
| #define KLOCK_HELD 0xffffffff |
| #define KLOCK_CLEAR 0x0 |
| |
| #ifdef CONFIG_750_SMP |
| #define smp_send_tlb_invalidate(x) smp_ppc750_send_tlb_invalidate(x) |
| #else |
| #define smp_send_tlb_invalidate(x) do {} while(0) |
| #endif |
| |
| #endif /* __ASSEMBLY__ */ |
| |
| #else /* !(CONFIG_SMP) */ |
| |
| #endif /* !(CONFIG_SMP) */ |
| |
| #endif /* !(_PPC_SMP_H) */ |
| #endif /* __KERNEL__ */ |
