arch/i386/mach-visws/reboot.c

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