patch-2.4.19 linux-2.4.19/arch/mips64/sgi-ip22/ip22-reset.c

• Lines: 239
• Date: Wed Dec 31 16:00:00 1969
• Orig file: linux-2.4.18/arch/mips64/sgi-ip22/ip22-reset.c
• Orig date: Sun Sep 9 10:43:02 2001

diff -urN linux-2.4.18/arch/mips64/sgi-ip22/ip22-reset.c linux-2.4.19/arch/mips64/sgi-ip22/ip22-reset.c
@@ -1,238 +0,0 @@
-/*
- * 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 IP22.
- *
- * Copyright (C) 1997, 1998, 1999, 2001 by Ralf Baechle
- */
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/notifier.h>
-#include <linux/timer.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/system.h>
-#include <asm/sgialib.h>
-#include <asm/sgi/sgihpc.h>
-#include <asm/sgi/sgint23.h>
-
-/*
- * Just powerdown if init hasn't done after POWERDOWN_TIMEOUT seconds.
- * I'm not shure if this feature is a good idea, for now it's here just to
- * make the power button make behave just like under IRIX.
- */
-#define POWERDOWN_TIMEOUT	120
-
-/*
- * Blink frequency during reboot grace period and when paniced.
- */
-#define POWERDOWN_FREQ		(HZ / 4)
-#define PANIC_FREQ		(HZ / 8)
-
-static unsigned char sgi_volume;
-
-static struct timer_list power_timer, blink_timer, debounce_timer, volume_timer;
-static int shuting_down, has_paniced;
-
-void machine_restart(char *command) __attribute__((noreturn));
-void machine_halt(void) __attribute__((noreturn));
-void machine_power_off(void) __attribute__((noreturn));
-
-/* XXX How to pass the reboot command to the firmware??? */
-void machine_restart(char *command)
-{
-	if (shuting_down)
-		machine_power_off();
-	ArcReboot();
-}
-
-void machine_halt(void)
-{
-	if (shuting_down)
-		machine_power_off();
-	ArcEnterInteractiveMode();
-}
-
-void machine_power_off(void)
-{
-	struct indy_clock *clock = (struct indy_clock *)INDY_CLOCK_REGS;
-
-	cli();
-
-	clock->cmd |= 0x08;	/* Disable watchdog */
-	clock->whsec = 0;
-	clock->wsec = 0;
-
-	while(1) {
-		hpc3mregs->panel=0xfe;
-		/* Good bye cruel world ...  */
-
-		/* If we're still running, we probably got sent an alarm
-		   interrupt.  Read the flag to clear it.  */
-		clock->halarm;
-	}
-}
-
-static void power_timeout(unsigned long data)
-{
-	machine_power_off();
-}
-
-static void blink_timeout(unsigned long data)
-{
-	/* XXX Fix this for Fullhouse  */
-	sgi_hpc_write1 ^= (HPC3_WRITE1_LC0OFF|HPC3_WRITE1_LC1OFF);
-	hpc3mregs->write1 = sgi_hpc_write1;
-
-	mod_timer(&blink_timer, jiffies+data);
-}
-
-static void debounce(unsigned long data)
-{
-	del_timer(&debounce_timer);
-	if (ioc_icontrol->istat1 & 2) { /* Interrupt still being sent.  */
-		debounce_timer.expires = jiffies + 5; /* 0.05s  */
-		add_timer(&debounce_timer);
-
-		hpc3mregs->panel = 0xf3;
-
-		return;
-	}
-
-	if (has_paniced)
-		ArcReboot();
-
-	enable_irq(9);
-}
-
-static inline void power_button(void)
-{
-	if (has_paniced)
-		return;
-
-	if (shuting_down || kill_proc(1, SIGINT, 1)) {
-		/* No init process or button pressed twice.  */
-		machine_power_off();
-	}
-
-	shuting_down = 1;
-	blink_timer.data = POWERDOWN_FREQ;
-	blink_timeout(POWERDOWN_FREQ);
-
-	init_timer(&power_timer);
-	power_timer.function = power_timeout;
-	power_timer.expires = jiffies + POWERDOWN_TIMEOUT * HZ;
-	add_timer(&power_timer);
-}
-
-void inline ip22_volume_set(unsigned char volume)
-{
-	sgi_volume = volume;
-
-	hpc3c0->pbus_extregs[2][0] = sgi_volume;
-	hpc3c0->pbus_extregs[2][1] = sgi_volume;
-}
-
-void inline ip22_volume_get(unsigned char *volume)
-{
-	*volume = sgi_volume;
-}
-
-static inline void volume_up_button(unsigned long data)
-{
-	del_timer(&volume_timer);
-
-	if (sgi_volume < 0xff)
-		sgi_volume++;
-
-	hpc3c0->pbus_extregs[2][0] = sgi_volume;
-	hpc3c0->pbus_extregs[2][1] = sgi_volume;
-
-	if (ioc_icontrol->istat1 & 2) {
-		volume_timer.expires = jiffies + 1;
-		add_timer(&volume_timer);
-	}
-
-}
-
-static inline void volume_down_button(unsigned long data)
-{
-	del_timer(&volume_timer);
-
-	if (sgi_volume > 0)
-		sgi_volume--;
-
-	hpc3c0->pbus_extregs[2][0] = sgi_volume;
-	hpc3c0->pbus_extregs[2][1] = sgi_volume;
-
-	if (ioc_icontrol->istat1 & 2) {
-		volume_timer.expires = jiffies + 1;
-		add_timer(&volume_timer);
-	}
-}
-
-static void panel_int(int irq, void *dev_id, struct pt_regs *regs)
-{
-	unsigned int buttons;
-
-	buttons = hpc3mregs->panel;
-	hpc3mregs->panel = 3; /* power_interrupt | power_supply_on */
-
-	if (ioc_icontrol->istat1 & 2) { /* Wait until interrupt goes away */
-		disable_irq(9);
-		init_timer(&debounce_timer);
-		debounce_timer.function = debounce;
-		debounce_timer.expires = jiffies + 5;
-		add_timer(&debounce_timer);
-	}
-
-	if (!(buttons & 2))		/* Power button was pressed */
-		power_button();
-	if (!(buttons & 0x40)) {	/* Volume up button was pressed */
-		init_timer(&volume_timer);
-		volume_timer.function = volume_up_button;
-		volume_timer.expires = jiffies + 1;
-		add_timer(&volume_timer);
-	}
-	if (!(buttons & 0x10)) {	/* Volume down button was pressed */
-		init_timer(&volume_timer);
-		volume_timer.function = volume_down_button;
-		volume_timer.expires = jiffies + 1;
-		add_timer(&volume_timer);
-	}
-}
-
-static int panic_event(struct notifier_block *this, unsigned long event,
-                      void *ptr)
-{
-	if (has_paniced)
-		return NOTIFY_DONE;
-	has_paniced = 1;
-
-	blink_timer.data = PANIC_FREQ;
-	blink_timeout(PANIC_FREQ);
-
-	return NOTIFY_DONE;
-}
-
-static struct notifier_block panic_block = {
-	panic_event,
-	NULL,
-	0
-};
-
-void ip22_reboot_setup(void)
-{
-	static int setup_done;
-
-	if (setup_done)
-		return;
-	setup_done = 1;
-
-	request_irq(9, panel_int, 0, "Front Panel", NULL);
-	init_timer(&blink_timer);
-	blink_timer.function = blink_timeout;
-	notifier_chain_register(&panic_notifier_list, &panic_block);
-}