1/* 2 * Smp support for CHRP machines. 3 * 4 * Written by Cort Dougan (cort@cs.nmt.edu) borrowing a great 5 * deal of code from the sparc and intel versions. 6 * 7 * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu> 8 * 9 */ 10 11#include <linux/kernel.h> 12#include <linux/sched.h> 13#include <linux/smp.h> 14#include <linux/interrupt.h> 15#include <linux/kernel_stat.h> 16#include <linux/delay.h> 17#include <linux/init.h> 18#include <linux/spinlock.h> 19 20#include <asm/ptrace.h> 21#include <asm/atomic.h> 22#include <asm/irq.h> 23#include <asm/page.h> 24#include <asm/pgtable.h> 25#include <asm/sections.h> 26#include <asm/io.h> 27#include <asm/prom.h> 28#include <asm/smp.h> 29#include <asm/machdep.h> 30#include <asm/mpic.h> 31#include <asm/rtas.h> 32 33static void __devinit smp_chrp_kick_cpu(int nr) 34{ 35 *(unsigned long *)KERNELBASE = nr; 36 asm volatile("dcbf 0,%0"::"r"(KERNELBASE):"memory"); 37} 38 39static void __devinit smp_chrp_setup_cpu(int cpu_nr) 40{ 41 mpic_setup_this_cpu(); 42} 43 44/* CHRP with openpic */ 45struct smp_ops_t chrp_smp_ops = { 46 .message_pass = smp_mpic_message_pass, 47 .probe = smp_mpic_probe, 48 .kick_cpu = smp_chrp_kick_cpu, 49 .setup_cpu = smp_chrp_setup_cpu, 50 .give_timebase = rtas_give_timebase, 51 .take_timebase = rtas_take_timebase, 52}; 53