| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 by Ralf Baechle |
| 9 | * Copyright (C) 1999, 2000 Silicon Graphics, Inc. |
| 10 | */ |
| 11 | #include <linux/config.h> |
| 12 | #include <linux/kernel.h> |
| 13 | #include <linux/sched.h> |
| 14 | #include <linux/timer.h> |
| 15 | #include <linux/smp.h> |
| 16 | #include <linux/mmzone.h> |
| 17 | #include <linux/nodemask.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 | |
| 29 | void machine_restart(char *command) __attribute__((noreturn)); |
| 30 | void machine_halt(void) __attribute__((noreturn)); |
| 31 | void machine_power_off(void) __attribute__((noreturn)); |
| 32 | |
| 33 | #define noreturn while(1); /* Silence gcc. */ |
| 34 | |
| 35 | /* XXX How to pass the reboot command to the firmware??? */ |
| 36 | static void ip27_machine_restart(char *command) |
| 37 | { |
| 38 | #if 0 |
| 39 | int i; |
| 40 | #endif |
| 41 | |
| 42 | printk("Reboot started from CPU %d\n", smp_processor_id()); |
| 43 | #ifdef CONFIG_SMP |
| 44 | smp_send_stop(); |
| 45 | #endif |
| 46 | #if 0 |
| 47 | for_each_online_node(i) |
| 48 | REMOTE_HUB_S(COMPACT_TO_NASID_NODEID(i), PROMOP_REG, |
| 49 | PROMOP_REBOOT); |
| 50 | #else |
| 51 | LOCAL_HUB_S(NI_PORT_RESET, NPR_PORTRESET | NPR_LOCALRESET); |
| 52 | #endif |
| 53 | noreturn; |
| 54 | } |
| 55 | |
| 56 | static void ip27_machine_halt(void) |
| 57 | { |
| 58 | int i; |
| 59 | |
| 60 | #ifdef CONFIG_SMP |
| 61 | smp_send_stop(); |
| 62 | #endif |
| 63 | for_each_online_node(i) |
| 64 | REMOTE_HUB_S(COMPACT_TO_NASID_NODEID(i), PROMOP_REG, |
| 65 | PROMOP_RESTART); |
| 66 | LOCAL_HUB_S(NI_PORT_RESET, NPR_PORTRESET | NPR_LOCALRESET); |
| 67 | noreturn; |
| 68 | } |
| 69 | |
| 70 | static void ip27_machine_power_off(void) |
| 71 | { |
| 72 | /* To do ... */ |
| 73 | noreturn; |
| 74 | } |
| 75 | |
| 76 | void ip27_reboot_setup(void) |
| 77 | { |
| 78 | _machine_restart = ip27_machine_restart; |
| 79 | _machine_halt = ip27_machine_halt; |
| 80 | _machine_power_off = ip27_machine_power_off; |
| 81 | } |