1/* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Reset an IP27. 7 * 8 * Copyright (C) 1997, 1998, 1999, 2000, 06 by Ralf Baechle 9 * Copyright (C) 1999, 2000 Silicon Graphics, Inc. 10 */ 11#include <linux/kernel.h> 12#include <linux/sched.h> 13#include <linux/timer.h> 14#include <linux/smp.h> 15#include <linux/mmzone.h> 16#include <linux/nodemask.h> 17#include <linux/pm.h> 18 19#include <asm/io.h> 20#include <asm/irq.h> 21#include <asm/reboot.h> 22#include <asm/system.h> 23#include <asm/sgialib.h> 24#include <asm/sn/addrs.h> 25#include <asm/sn/arch.h> 26#include <asm/sn/gda.h> 27#include <asm/sn/sn0/hub.h> 28 29void machine_restart(char *command) __attribute__((noreturn)); 30void machine_halt(void) __attribute__((noreturn)); 31void machine_power_off(void) __attribute__((noreturn)); 32 33#define noreturn while(1); /* Silence gcc. */ 34 35static void ip27_machine_restart(char *command) 36{ 37 38 printk("Reboot started from CPU %d\n", smp_processor_id()); 39#ifdef CONFIG_SMP 40 smp_send_stop(); 41#endif 42 LOCAL_HUB_S(NI_PORT_RESET, NPR_PORTRESET | NPR_LOCALRESET); 43 noreturn; 44} 45 46static void ip27_machine_halt(void) 47{ 48 int i; 49 50#ifdef CONFIG_SMP 51 smp_send_stop(); 52#endif 53 for_each_online_node(i) 54 REMOTE_HUB_S(COMPACT_TO_NASID_NODEID(i), PROMOP_REG, 55 PROMOP_RESTART); 56 LOCAL_HUB_S(NI_PORT_RESET, NPR_PORTRESET | NPR_LOCALRESET); 57 noreturn; 58} 59 60static void ip27_machine_power_off(void) 61{ 62 /* To do ... */ 63 noreturn; 64} 65 66void ip27_reboot_setup(void) 67{ 68 _machine_restart = ip27_machine_restart; 69 _machine_halt = ip27_machine_halt; 70 pm_power_off = ip27_machine_power_off; 71} 72