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[ACPI] ACPI poweroff fix 

Register an "acpi" system device to be notified of shutdown preparation.
This depends on CONFIG_PM

http://bugzilla.kernel.org/show_bug.cgi?id=4041

Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
hifive-unleashed-5.1
Alexey Starikovskiy 2005-03-18 16:20:46 -05:00 committed by Len Brown
parent be91492ca8
commit e2a5b420f7
5 changed files with 107 additions and 53 deletions
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74
drivers/acpi/sleep/main.c
View File

@ -1,6 +1,7 @@
/*
* sleep.c - ACPI sleep support.
*
* Copyright (c) 2005 Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
* Copyright (c) 2004 David Shaohua Li <shaohua.li@intel.com>
* Copyright (c) 2000-2003 Patrick Mochel
* Copyright (c) 2003 Open Source Development Lab
@ -14,7 +15,6 @@
#include <linux/dmi.h>
#include <linux/device.h>
#include <linux/suspend.h>
#include <asm/io.h>
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
#include "sleep.h"
@ -27,10 +27,11 @@ extern void do_suspend_lowlevel_s4bios(void);
extern void do_suspend_lowlevel(void);
static u32 acpi_suspend_states[] = {
[PM_SUSPEND_ON] = ACPI_STATE_S0,
[PM_SUSPEND_STANDBY] = ACPI_STATE_S1,
[PM_SUSPEND_MEM] = ACPI_STATE_S3,
[PM_SUSPEND_DISK] = ACPI_STATE_S4,
[PM_SUSPEND_ON] = ACPI_STATE_S0,
[PM_SUSPEND_STANDBY] = ACPI_STATE_S1,
[PM_SUSPEND_MEM] = ACPI_STATE_S3,
[PM_SUSPEND_DISK] = ACPI_STATE_S4,
[PM_SUSPEND_MAX] = ACPI_STATE_S5
};
static int init_8259A_after_S1;
@ -44,30 +45,20 @@ static int init_8259A_after_S1;
* wakeup code to the waking vector.
*/
extern int acpi_sleep_prepare(u32 acpi_state);
extern void acpi_power_off(void);
static int acpi_pm_prepare(suspend_state_t pm_state)
{
u32 acpi_state = acpi_suspend_states[pm_state];
if (!sleep_states[acpi_state])
if (!sleep_states[acpi_state]) {
printk("acpi_pm_prepare does not support %d \n", pm_state);
return -EPERM;
/* do we have a wakeup address for S2 and S3? */
/* Here, we support only S4BIOS, those we set the wakeup address */
/* S4OS is only supported for now via swsusp.. */
if (pm_state == PM_SUSPEND_MEM || pm_state == PM_SUSPEND_DISK) {
if (!acpi_wakeup_address)
return -EFAULT;
acpi_set_firmware_waking_vector(
(acpi_physical_address) virt_to_phys(
(void *)acpi_wakeup_address));
}
ACPI_FLUSH_CPU_CACHE();
acpi_enable_wakeup_device_prep(acpi_state);
acpi_enter_sleep_state_prep(acpi_state);
return 0;
return acpi_sleep_prepare(acpi_state);
}
/**
* acpi_pm_enter - Actually enter a sleep state.
* @pm_state: State we're entering.
@ -92,11 +83,9 @@ static int acpi_pm_enter(suspend_state_t pm_state)
return error;
}
local_irq_save(flags);
acpi_enable_wakeup_device(acpi_state);
switch (pm_state)
{
switch (pm_state) {
case PM_SUSPEND_STANDBY:
barrier();
status = acpi_enter_sleep_state(acpi_state);
@ -112,6 +101,10 @@ static int acpi_pm_enter(suspend_state_t pm_state)
else
do_suspend_lowlevel_s4bios();
break;
case PM_SUSPEND_MAX:
acpi_power_off();
break;
default:
return -EINVAL;
}
@ -126,11 +119,9 @@ static int acpi_pm_enter(suspend_state_t pm_state)
if (pm_state > PM_SUSPEND_STANDBY)
acpi_restore_state_mem();
return ACPI_SUCCESS(status) ? 0 : -EFAULT;
}
/**
* acpi_pm_finish - Finish up suspend sequence.
* @pm_state: State we're coming out of.
@ -156,27 +147,26 @@ static int acpi_pm_finish(suspend_state_t pm_state)
return 0;
}
int acpi_suspend(u32 acpi_state)
{
suspend_state_t states[] = {
[1] = PM_SUSPEND_STANDBY,
[3] = PM_SUSPEND_MEM,
[4] = PM_SUSPEND_DISK,
[1] = PM_SUSPEND_STANDBY,
[3] = PM_SUSPEND_MEM,
[4] = PM_SUSPEND_DISK,
[5] = PM_SUSPEND_MAX
};
if (acpi_state <= 4 && states[acpi_state])
if (acpi_state < 6 && states[acpi_state])
return pm_suspend(states[acpi_state]);
return -EINVAL;
}
static struct pm_ops acpi_pm_ops = {
.prepare = acpi_pm_prepare,
.enter = acpi_pm_enter,
.finish = acpi_pm_finish,
.prepare = acpi_pm_prepare,
.enter = acpi_pm_enter,
.finish = acpi_pm_finish,
};
/*
* Toshiba fails to preserve interrupts over S1, reinitialization
* of 8259 is needed after S1 resume.
@ -190,16 +180,16 @@ static int __init init_ints_after_s1(struct dmi_system_id *d)
static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
{
.callback = init_ints_after_s1,
.ident = "Toshiba Satellite 4030cdt",
.matches = { DMI_MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"), },
},
{ },
.callback = init_ints_after_s1,
.ident = "Toshiba Satellite 4030cdt",
.matches = {DMI_MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"),},
},
{},
};
static int __init acpi_sleep_init(void)
{
int i = 0;
int i = 0;
dmi_check_system(acpisleep_dmi_table);
@ -207,7 +197,7 @@ static int __init acpi_sleep_init(void)
return 0;
printk(KERN_INFO PREFIX "(supports");
for (i=0; i < ACPI_S_STATE_COUNT; i++) {
for (i = 0; i < ACPI_S_STATE_COUNT; i++) {
acpi_status status;
u8 type_a, type_b;
status = acpi_get_sleep_type_data(i, &type_a, &type_b);

81
drivers/acpi/sleep/poweroff.c
View File

@ -3,35 +3,100 @@
*
* AKA S5, but it is independent of whether or not the kernel supports
* any other sleep support in the system.
*
* Copyright (c) 2005 Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
*
* This file is released under the GPLv2.
*/
#include <linux/pm.h>
#include <linux/init.h>
#include <acpi/acpi_bus.h>
#include <linux/sched.h>
#include <linux/sysdev.h>
#include <asm/io.h>
#include "sleep.h"
static void
acpi_power_off (void)
int acpi_sleep_prepare(u32 acpi_state)
{
printk("%s called\n",__FUNCTION__);
/* Flag to do not allow second time invocation for S5 state */
static int shutdown_prepared = 0;
#ifdef CONFIG_ACPI_SLEEP
/* do we have a wakeup address for S2 and S3? */
/* Here, we support only S4BIOS, those we set the wakeup address */
/* S4OS is only supported for now via swsusp.. */
if (acpi_state == ACPI_STATE_S3 || acpi_state == ACPI_STATE_S4) {
if (!acpi_wakeup_address) {
return -EFAULT;
}
acpi_set_firmware_waking_vector((acpi_physical_address)
virt_to_phys((void *)
acpi_wakeup_address));
}
ACPI_FLUSH_CPU_CACHE();
acpi_enable_wakeup_device_prep(acpi_state);
#endif
if (acpi_state == ACPI_STATE_S5) {
/* Check if we were already called */
if (shutdown_prepared)
return 0;
acpi_wakeup_gpe_poweroff_prepare();
shutdown_prepared = 1;
}
acpi_enter_sleep_state_prep(acpi_state);
return 0;
}
void acpi_power_off(void)
{
printk("%s called\n", __FUNCTION__);
acpi_sleep_prepare(ACPI_STATE_S5);
local_irq_disable();
/* Some SMP machines only can poweroff in boot CPU */
set_cpus_allowed(current, cpumask_of_cpu(0));
acpi_wakeup_gpe_poweroff_prepare();
acpi_enter_sleep_state_prep(ACPI_STATE_S5);
ACPI_DISABLE_IRQS();
acpi_enter_sleep_state(ACPI_STATE_S5);
}
#ifdef CONFIG_PM
static int acpi_shutdown(struct sys_device *x)
{
return acpi_sleep_prepare(ACPI_STATE_S5);
}
static struct sysdev_class acpi_sysclass = {
set_kset_name("acpi"),
.shutdown = acpi_shutdown
};
static struct sys_device device_acpi = {
.id = 0,
.cls = &acpi_sysclass,
};
#endif
static int acpi_poweroff_init(void)
{
if (!acpi_disabled) {
u8 type_a, type_b;
acpi_status status;
status = acpi_get_sleep_type_data(ACPI_STATE_S5, &type_a, &type_b);
if (ACPI_SUCCESS(status))
status =
acpi_get_sleep_type_data(ACPI_STATE_S5, &type_a, &type_b);
if (ACPI_SUCCESS(status)) {
pm_power_off = acpi_power_off;
#ifdef CONFIG_PM
{
int error;
error = sysdev_class_register(&acpi_sysclass);
if (!error)
error = sysdev_register(&device_acpi);
return error;
}
#endif
}
}
return 0;
}

1
drivers/base/sys.c
View File

@ -22,7 +22,6 @@
#include <linux/string.h>
#include <linux/pm.h>
extern struct subsystem devices_subsys;
#define to_sysdev(k) container_of(k, struct sys_device, kobj)

2
include/linux/pm.h
View File

@ -175,7 +175,7 @@ struct pm_ops {
};
extern void pm_set_ops(struct pm_ops *);
extern struct pm_ops *pm_ops;
extern int pm_suspend(suspend_state_t state);

2
kernel/power/main.c
View File

@ -190,7 +190,7 @@ int software_suspend(void)
int pm_suspend(suspend_state_t state)
{
if (state > PM_SUSPEND_ON && state < PM_SUSPEND_MAX)
if (state > PM_SUSPEND_ON && state <= PM_SUSPEND_MAX)
return enter_state(state);
return -EINVAL;
}