diff options
Diffstat (limited to 'kernel/arch/mips/sgi-ip27/ip27-reset.c')
| -rw-r--r-- | kernel/arch/mips/sgi-ip27/ip27-reset.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/kernel/arch/mips/sgi-ip27/ip27-reset.c b/kernel/arch/mips/sgi-ip27/ip27-reset.c new file mode 100644 index 000000000..e44a15d4f --- /dev/null +++ b/kernel/arch/mips/sgi-ip27/ip27-reset.c @@ -0,0 +1,81 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Reset an IP27. + * + * Copyright (C) 1997, 1998, 1999, 2000, 06 by Ralf Baechle + * Copyright (C) 1999, 2000 Silicon Graphics, Inc. + */ +#include <linux/compiler.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/timer.h> +#include <linux/smp.h> +#include <linux/mmzone.h> +#include <linux/nodemask.h> +#include <linux/pm.h> + +#include <asm/io.h> +#include <asm/irq.h> +#include <asm/reboot.h> +#include <asm/sgialib.h> +#include <asm/sn/addrs.h> +#include <asm/sn/arch.h> +#include <asm/sn/gda.h> +#include <asm/sn/sn0/hub.h> + +void machine_restart(char *command) __noreturn; +void machine_halt(void) __noreturn; +void machine_power_off(void) __noreturn; + +#define noreturn while(1); /* Silence gcc. */ + +/* XXX How to pass the reboot command to the firmware??? */ +static void ip27_machine_restart(char *command) +{ +#if 0 + int i; +#endif + + printk("Reboot started from CPU %d\n", smp_processor_id()); +#ifdef CONFIG_SMP + smp_send_stop(); +#endif +#if 0 + for_each_online_node(i) + REMOTE_HUB_S(COMPACT_TO_NASID_NODEID(i), PROMOP_REG, + PROMOP_REBOOT); +#else + LOCAL_HUB_S(NI_PORT_RESET, NPR_PORTRESET | NPR_LOCALRESET); +#endif + noreturn; +} + +static void ip27_machine_halt(void) +{ + int i; + +#ifdef CONFIG_SMP + smp_send_stop(); +#endif + for_each_online_node(i) + REMOTE_HUB_S(COMPACT_TO_NASID_NODEID(i), PROMOP_REG, + PROMOP_RESTART); + LOCAL_HUB_S(NI_PORT_RESET, NPR_PORTRESET | NPR_LOCALRESET); + noreturn; +} + +static void ip27_machine_power_off(void) +{ + /* To do ... */ + noreturn; +} + +void ip27_reboot_setup(void) +{ + _machine_restart = ip27_machine_restart; + _machine_halt = ip27_machine_halt; + pm_power_off = ip27_machine_power_off; +} |