ip27-reset.c
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上传日期:2013-02-24
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- /*
- * 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 by Ralf Baechle
- * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
- */
- #include <linux/config.h>
- #include <linux/kernel.h>
- #include <linux/sched.h>
- #include <linux/timer.h>
- #include <linux/smp.h>
- #include <linux/mmzone.h>
- #include <asm/io.h>
- #include <asm/irq.h>
- #include <asm/system.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) __attribute__((noreturn));
- void machine_halt(void) __attribute__((noreturn));
- void machine_power_off(void) __attribute__((noreturn));
- #define noreturn while(1); /* Silence gcc. */
- /* XXX How to pass the reboot command to the firmware??? */
- void machine_restart(char *command)
- {
- #if 0
- int i;
- #endif
- printk("Reboot started from CPU %dn", smp_processor_id());
- #ifdef CONFIG_SMP
- smp_send_stop();
- #endif
- #if 0
- for (i = 0; i < numnodes; 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;
- }
- void machine_halt(void)
- {
- int i;
- #ifdef CONFIG_SMP
- smp_send_stop();
- #endif
- for (i = 0; i < numnodes; i++)
- REMOTE_HUB_S(COMPACT_TO_NASID_NODEID(i), PROMOP_REG,
- PROMOP_RESTART);
- LOCAL_HUB_S(NI_PORT_RESET, NPR_PORTRESET | NPR_LOCALRESET);
- noreturn;
- }
- void machine_power_off(void)
- {
- /* To do ... */
- noreturn;
- }
- void ip27_reboot_setup(void)
- {
- /* Nothing to do on IP27. */
- }