LXR linux/arch/mips/kernel/smp-up.c

   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 * Copyright (C) 2006, 07 by Ralf Baechle (ralf@linux-mips.org)
   7 *
   8 * Symmetric Uniprocessor (TM) Support
   9 */
  10#include <linux/kernel.h>
  11#include <linux/sched.h>
  12
  13/*
  14 * Send inter-processor interrupt
  15 */
  16static void up_send_ipi_single(int cpu, unsigned int action)
  17{
  18        panic(KERN_ERR "%s called", __func__);
  19}
  20
  21static inline void up_send_ipi_mask(const struct cpumask *mask,
  22                                    unsigned int action)
  23{
  24        panic(KERN_ERR "%s called", __func__);
  25}
  26
  27/*
  28 *  After we've done initial boot, this function is called to allow the
  29 *  board code to clean up state, if needed
  30 */
  31static void up_init_secondary(void)
  32{
  33}
  34
  35static void up_smp_finish(void)
  36{
  37}
  38
  39/* Hook for after all CPUs are online */
  40static void up_cpus_done(void)
  41{
  42}
  43
  44/*
  45 * Firmware CPU startup hook
  46 */
  47static void up_boot_secondary(int cpu, struct task_struct *idle)
  48{
  49}
  50
  51static void __init up_smp_setup(void)
  52{
  53}
  54
  55static void __init up_prepare_cpus(unsigned int max_cpus)
  56{
  57}
  58
  59#ifdef CONFIG_HOTPLUG_CPU
  60static int up_cpu_disable(void)
  61{
  62        return -ENOSYS;
  63}
  64
  65static void up_cpu_die(unsigned int cpu)
  66{
  67        BUG();
  68}
  69#endif
  70
  71struct plat_smp_ops up_smp_ops = {
  72        .send_ipi_single        = up_send_ipi_single,
  73        .send_ipi_mask          = up_send_ipi_mask,
  74        .init_secondary         = up_init_secondary,
  75        .smp_finish             = up_smp_finish,
  76        .cpus_done              = up_cpus_done,
  77        .boot_secondary         = up_boot_secondary,
  78        .smp_setup              = up_smp_setup,
  79        .prepare_cpus           = up_prepare_cpus,
  80#ifdef CONFIG_HOTPLUG_CPU
  81        .cpu_disable            = up_cpu_disable,
  82        .cpu_die                = up_cpu_die,
  83#endif
  84};
  85