diff options
Diffstat (limited to 'arch/sparc64/kernel/power.c')
| -rw-r--r-- | arch/sparc64/kernel/power.c | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/arch/sparc64/kernel/power.c b/arch/sparc64/kernel/power.c deleted file mode 100644 index 30bcaf58e3a..00000000000 --- a/arch/sparc64/kernel/power.c +++ /dev/null @@ -1,191 +0,0 @@ -/* $Id: power.c,v 1.10 2001/12/11 01:57:16 davem Exp $ - * power.c: Power management driver. - * - * Copyright (C) 1999 David S. Miller (davem@redhat.com) - */ - -#define __KERNEL_SYSCALLS__ - -#include <linux/config.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/sched.h> -#include <linux/signal.h> -#include <linux/delay.h> -#include <linux/interrupt.h> -#include <linux/pm.h> - -#include <asm/system.h> -#include <asm/ebus.h> -#include <asm/isa.h> -#include <asm/auxio.h> - -#include <linux/unistd.h> - -/* - * sysctl - toggle power-off restriction for serial console - * systems in machine_power_off() - */ -int scons_pwroff = 1; - -#ifdef CONFIG_PCI -static void __iomem *power_reg; - -static DECLARE_WAIT_QUEUE_HEAD(powerd_wait); -static int button_pressed; - -static irqreturn_t power_handler(int irq, void *dev_id, struct pt_regs *regs) -{ - if (button_pressed == 0) { - button_pressed = 1; - wake_up(&powerd_wait); - } - - /* FIXME: Check registers for status... */ - return IRQ_HANDLED; -} -#endif /* CONFIG_PCI */ - -extern void machine_halt(void); -extern void machine_alt_power_off(void); -static void (*poweroff_method)(void) = machine_alt_power_off; - -void machine_power_off(void) -{ - if (!serial_console || scons_pwroff) { -#ifdef CONFIG_PCI - if (power_reg) { - /* Both register bits seem to have the - * same effect, so until I figure out - * what the difference is... - */ - writel(AUXIO_PCIO_CPWR_OFF | AUXIO_PCIO_SPWR_OFF, power_reg); - } else -#endif /* CONFIG_PCI */ - if (poweroff_method != NULL) { - poweroff_method(); - /* not reached */ - } - } - machine_halt(); -} - -void (*pm_power_off)(void) = machine_power_off; -EXPORT_SYMBOL(pm_power_off); - -#ifdef CONFIG_PCI -static int powerd(void *__unused) -{ - static char *envp[] = { "HOME=/", "TERM=linux", "PATH=/sbin:/usr/sbin:/bin:/usr/bin", NULL }; - char *argv[] = { "/sbin/shutdown", "-h", "now", NULL }; - DECLARE_WAITQUEUE(wait, current); - - daemonize("powerd"); - - add_wait_queue(&powerd_wait, &wait); -again: - for (;;) { - set_task_state(current, TASK_INTERRUPTIBLE); - if (button_pressed) - break; - flush_signals(current); - schedule(); - } - __set_current_state(TASK_RUNNING); - remove_wait_queue(&powerd_wait, &wait); - - /* Ok, down we go... */ - button_pressed = 0; - if (execve("/sbin/shutdown", argv, envp) < 0) { - printk("powerd: shutdown execution failed\n"); - add_wait_queue(&powerd_wait, &wait); - goto again; - } - return 0; -} - -static int __init has_button_interrupt(unsigned int irq, int prom_node) -{ - if (irq == PCI_IRQ_NONE) - return 0; - if (!prom_node_has_property(prom_node, "button")) - return 0; - - return 1; -} - -static int __init power_probe_ebus(struct resource **resp, unsigned int *irq_p, int *prom_node_p) -{ - struct linux_ebus *ebus; - struct linux_ebus_device *edev; - - for_each_ebus(ebus) { - for_each_ebusdev(edev, ebus) { - if (!strcmp(edev->prom_name, "power")) { - *resp = &edev->resource[0]; - *irq_p = edev->irqs[0]; - *prom_node_p = edev->prom_node; - return 0; - } - } - } - return -ENODEV; -} - -static int __init power_probe_isa(struct resource **resp, unsigned int *irq_p, int *prom_node_p) -{ - struct sparc_isa_bridge *isa_bus; - struct sparc_isa_device *isa_dev; - - for_each_isa(isa_bus) { - for_each_isadev(isa_dev, isa_bus) { - if (!strcmp(isa_dev->prom_name, "power")) { - *resp = &isa_dev->resource; - *irq_p = isa_dev->irq; - *prom_node_p = isa_dev->prom_node; - return 0; - } - } - } - return -ENODEV; -} - -void __init power_init(void) -{ - struct resource *res = NULL; - unsigned int irq; - int prom_node; - static int invoked; - - if (invoked) - return; - invoked = 1; - - if (!power_probe_ebus(&res, &irq, &prom_node)) - goto found; - - if (!power_probe_isa(&res, &irq, &prom_node)) - goto found; - - return; - -found: - power_reg = ioremap(res->start, 0x4); - printk("power: Control reg at %p ... ", power_reg); - poweroff_method = machine_halt; /* able to use the standard halt */ - if (has_button_interrupt(irq, prom_node)) { - if (kernel_thread(powerd, NULL, CLONE_FS) < 0) { - printk("Failed to start power daemon.\n"); - return; - } - printk("powerd running.\n"); - - if (request_irq(irq, - power_handler, SA_SHIRQ, "power", NULL) < 0) - printk("power: Error, cannot register IRQ handler.\n"); - } else { - printk("not using powerd.\n"); - } -} -#endif /* CONFIG_PCI */ |