95e4676594e1e0c05d9e181821533a016e3a28da
[linux-2.6.git] / 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 EXPORT_SYMBOL(machine_restart);
26
27 void machine_power_off(void)
28 {
29         unsigned short pm_status;
30         extern unsigned int pci_bus0;
31
32         while ((pm_status = inw(PMSTS_PORT)) & 0x100)
33                 outw(pm_status, PMSTS_PORT);
34
35         outw(PM_SUSPEND_ENABLE, PMCNTRL_PORT);
36
37         mdelay(10);
38
39 #define PCI_CONF1_ADDRESS(bus, devfn, reg) \
40         (0x80000000 | (bus << 16) | (devfn << 8) | (reg & ~3))
41
42         outl(PCI_CONF1_ADDRESS(pci_bus0, SPECIAL_DEV, SPECIAL_REG), 0xCF8);
43         outl(PIIX_SPECIAL_STOP, 0xCFC);
44 }
45
46 EXPORT_SYMBOL(machine_power_off);
47
48 void machine_halt(void)
49 {
50 }
51
52 EXPORT_SYMBOL(machine_halt);