| /* |
| * smp.h: PPC64 specific SMP code. |
| * |
| * 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> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| */ |
| |
| #ifdef __KERNEL__ |
| #ifndef _PPC64_SMP_H |
| #define _PPC64_SMP_H |
| |
| #include <linux/config.h> |
| #include <linux/kernel.h> |
| #include <linux/threads.h> /* for NR_CPUS */ |
| |
| |
| #ifndef __ASSEMBLY__ |
| #ifdef CONFIG_SMP |
| |
| #include <asm/paca.h> |
| |
| struct current_set_struct { |
| struct task_struct *task; |
| unsigned long *sp_real; |
| }; |
| |
| extern unsigned long cpu_online_map; |
| |
| extern void smp_message_pass(int target, int msg, unsigned long data, int wait); |
| 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 *); |
| |
| /* |
| * Retrieve the state of a CPU: |
| * online: CPU is in a normal run state |
| * possible: CPU is a candidate to be made online |
| * available: CPU is candidate for the 'possible' pool |
| */ |
| #define cpu_possible(cpu) paca[cpu].active |
| #define cpu_available(cpu) paca[cpu].available |
| |
| #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) |
| extern volatile unsigned long cpu_callin_map[NR_CPUS]; |
| |
| #define smp_processor_id() (get_paca()->xPacaIndex) |
| #define hard_smp_processor_id() (get_paca()->xHwProcNum) |
| |
| |
| |
| /* Since OpenPIC has only 4 IPIs, we use slightly different message numbers. |
| * |
| * Make sure this matches openpic_request_IPIs in open_pic.c, or what shows up |
| * in /proc/interrupts will be wrong!!! --Troy */ |
| #define PPC_MSG_CALL_FUNCTION 0 |
| #define PPC_MSG_RESCHEDULE 1 |
| #define PPC_MSG_INVALIDATE_TLB 2 |
| #define PPC_MSG_XMON_BREAK 3 |
| |
| void smp_init_iSeries(void); |
| void smp_init_pSeries(void); |
| |
| #else /* CONFIG_SMP */ |
| #define cpu_possible(cpu) ((cpu) == 0) |
| #define cpu_available(cpu) ((cpu) == 0) |
| |
| #endif /* !(CONFIG_SMP) */ |
| #endif /* __ASSEMBLY__ */ |
| #endif /* !(_PPC64_SMP_H) */ |
| #endif /* __KERNEL__ */ |
