arch/x86/mach-visws/reboot.c

   1 #include <linux/module.h>
   2 #include <linux/smp.h>
   3 #include <linux/delay.h>
   4
   5 #include <asm/io.h>
   6 #include "piix4.h"
   7
   8 void (*pm_power_off)(void);
   9 EXPORT_SYMBOL(pm_power_off);
  10
  11 void machine_shutdown(void)
  12 {
  13 #ifdef CONFIG_SMP
  14         smp_send_stop();
  15 #endif
  16 }
  17
  18 void machine_emergency_restart(void)
  19 {
  20         /*
  21          * Visual Workstations restart after this
  22          * register is poked on the PIIX4
  23          */
  24         outb(PIIX4_RESET_VAL, PIIX4_RESET_PORT);
  25 }
  26
  27 void machine_restart(char * __unused)
  28 {
  29         machine_shutdown();
  30         machine_emergency_restart();
  31 }
  32
  33 void machine_power_off(void)
  34 {
  35         unsigned short pm_status;
  36         extern unsigned int pci_bus0;
  37
  38         while ((pm_status = inw(PMSTS_PORT)) & 0x100)
  39                 outw(pm_status, PMSTS_PORT);
  40
  41         outw(PM_SUSPEND_ENABLE, PMCNTRL_PORT);
  42
  43         mdelay(10);
  44
  45 #define PCI_CONF1_ADDRESS(bus, devfn, reg) \
  46         (0x80000000 | (bus << 16) | (devfn << 8) | (reg & ~3))
  47
  48         outl(PCI_CONF1_ADDRESS(pci_bus0, SPECIAL_DEV, SPECIAL_REG), 0xCF8);
  49         outl(PIIX_SPECIAL_STOP, 0xCFC);
  50 }
  51
  52 void machine_halt(void)
  53 {
  54 }
  55