PCI: implement new suspend/resume callbacks
Implement new suspend and hibernation callbacks for the PCI bus type. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Rafael J. Wysocki
Jesse Barnes
parent
1eede070a5
commit
bbb44d9f23
|
|
@ -274,7 +274,57 @@ static int pci_device_remove(struct device * dev)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int pci_device_suspend(struct device * dev, pm_message_t state)
|
||||
static void pci_device_shutdown(struct device *dev)
|
||||
{
|
||||
struct pci_dev *pci_dev = to_pci_dev(dev);
|
||||
struct pci_driver *drv = pci_dev->driver;
|
||||
|
||||
if (drv && drv->shutdown)
|
||||
drv->shutdown(pci_dev);
|
||||
pci_msi_shutdown(pci_dev);
|
||||
pci_msix_shutdown(pci_dev);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM_SLEEP
|
||||
|
||||
/*
|
||||
* Default "suspend" method for devices that have no driver provided suspend,
|
||||
* or not even a driver at all.
|
||||
*/
|
||||
static void pci_default_pm_suspend(struct pci_dev *pci_dev)
|
||||
{
|
||||
pci_save_state(pci_dev);
|
||||
/*
|
||||
* mark its power state as "unknown", since we don't know if
|
||||
* e.g. the BIOS will change its device state when we suspend.
|
||||
*/
|
||||
if (pci_dev->current_state == PCI_D0)
|
||||
pci_dev->current_state = PCI_UNKNOWN;
|
||||
}
|
||||
|
||||
/*
|
||||
* Default "resume" method for devices that have no driver provided resume,
|
||||
* or not even a driver at all.
|
||||
*/
|
||||
static int pci_default_pm_resume(struct pci_dev *pci_dev)
|
||||
{
|
||||
int retval = 0;
|
||||
|
||||
/* restore the PCI config space */
|
||||
pci_restore_state(pci_dev);
|
||||
/* if the device was enabled before suspend, reenable */
|
||||
retval = pci_reenable_device(pci_dev);
|
||||
/*
|
||||
* if the device was busmaster before the suspend, make it busmaster
|
||||
* again
|
||||
*/
|
||||
if (pci_dev->is_busmaster)
|
||||
pci_set_master(pci_dev);
|
||||
|
||||
return retval;
|
||||
}
|
||||
|
||||
static int pci_legacy_suspend(struct device *dev, pm_message_t state)
|
||||
{
|
||||
struct pci_dev * pci_dev = to_pci_dev(dev);
|
||||
struct pci_driver * drv = pci_dev->driver;
|
||||
|
|
@ -284,21 +334,12 @@ static int pci_device_suspend(struct device * dev, pm_message_t state)
|
|||
i = drv->suspend(pci_dev, state);
|
||||
suspend_report_result(drv->suspend, i);
|
||||
} else {
|
||||
pci_save_state(pci_dev);
|
||||
/*
|
||||
* mark its power state as "unknown", since we don't know if
|
||||
* e.g. the BIOS will change its device state when we suspend.
|
||||
*/
|
||||
if (pci_dev->current_state == PCI_D0)
|
||||
pci_dev->current_state = PCI_UNKNOWN;
|
||||
pci_default_pm_suspend(pci_dev);
|
||||
}
|
||||
|
||||
pci_fixup_device(pci_fixup_suspend, pci_dev);
|
||||
|
||||
return i;
|
||||
}
|
||||
|
||||
static int pci_device_suspend_late(struct device * dev, pm_message_t state)
|
||||
static int pci_legacy_suspend_late(struct device *dev, pm_message_t state)
|
||||
{
|
||||
struct pci_dev * pci_dev = to_pci_dev(dev);
|
||||
struct pci_driver * drv = pci_dev->driver;
|
||||
|
|
@ -311,26 +352,7 @@ static int pci_device_suspend_late(struct device * dev, pm_message_t state)
|
|||
return i;
|
||||
}
|
||||
|
||||
/*
|
||||
* Default resume method for devices that have no driver provided resume,
|
||||
* or not even a driver at all.
|
||||
*/
|
||||
static int pci_default_resume(struct pci_dev *pci_dev)
|
||||
{
|
||||
int retval = 0;
|
||||
|
||||
/* restore the PCI config space */
|
||||
pci_restore_state(pci_dev);
|
||||
/* if the device was enabled before suspend, reenable */
|
||||
retval = pci_reenable_device(pci_dev);
|
||||
/* if the device was busmaster before the suspend, make it busmaster again */
|
||||
if (pci_dev->is_busmaster)
|
||||
pci_set_master(pci_dev);
|
||||
|
||||
return retval;
|
||||
}
|
||||
|
||||
static int pci_device_resume(struct device * dev)
|
||||
static int pci_legacy_resume(struct device *dev)
|
||||
{
|
||||
int error;
|
||||
struct pci_dev * pci_dev = to_pci_dev(dev);
|
||||
|
|
@ -339,35 +361,313 @@ static int pci_device_resume(struct device * dev)
|
|||
if (drv && drv->resume)
|
||||
error = drv->resume(pci_dev);
|
||||
else
|
||||
error = pci_default_resume(pci_dev);
|
||||
pci_fixup_device(pci_fixup_resume, pci_dev);
|
||||
error = pci_default_pm_resume(pci_dev);
|
||||
return error;
|
||||
}
|
||||
|
||||
static int pci_device_resume_early(struct device * dev)
|
||||
static int pci_legacy_resume_early(struct device *dev)
|
||||
{
|
||||
int error = 0;
|
||||
struct pci_dev * pci_dev = to_pci_dev(dev);
|
||||
struct pci_driver * drv = pci_dev->driver;
|
||||
|
||||
pci_fixup_device(pci_fixup_resume_early, pci_dev);
|
||||
|
||||
if (drv && drv->resume_early)
|
||||
error = drv->resume_early(pci_dev);
|
||||
return error;
|
||||
}
|
||||
|
||||
static void pci_device_shutdown(struct device *dev)
|
||||
static int pci_pm_prepare(struct device *dev)
|
||||
{
|
||||
struct device_driver *drv = dev->driver;
|
||||
int error = 0;
|
||||
|
||||
if (drv && drv->pm && drv->pm->prepare)
|
||||
error = drv->pm->prepare(dev);
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
static void pci_pm_complete(struct device *dev)
|
||||
{
|
||||
struct device_driver *drv = dev->driver;
|
||||
|
||||
if (drv && drv->pm && drv->pm->complete)
|
||||
drv->pm->complete(dev);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_SUSPEND
|
||||
|
||||
static int pci_pm_suspend(struct device *dev)
|
||||
{
|
||||
struct pci_dev *pci_dev = to_pci_dev(dev);
|
||||
struct device_driver *drv = dev->driver;
|
||||
int error = 0;
|
||||
|
||||
if (drv && drv->pm) {
|
||||
if (drv->pm->suspend) {
|
||||
error = drv->pm->suspend(dev);
|
||||
suspend_report_result(drv->pm->suspend, error);
|
||||
} else {
|
||||
pci_default_pm_suspend(pci_dev);
|
||||
}
|
||||
} else {
|
||||
error = pci_legacy_suspend(dev, PMSG_SUSPEND);
|
||||
}
|
||||
pci_fixup_device(pci_fixup_suspend, pci_dev);
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
static int pci_pm_suspend_noirq(struct device *dev)
|
||||
{
|
||||
struct pci_dev *pci_dev = to_pci_dev(dev);
|
||||
struct pci_driver *drv = pci_dev->driver;
|
||||
int error = 0;
|
||||
|
||||
if (drv && drv->shutdown)
|
||||
drv->shutdown(pci_dev);
|
||||
pci_msi_shutdown(pci_dev);
|
||||
pci_msix_shutdown(pci_dev);
|
||||
if (drv && drv->pm) {
|
||||
if (drv->pm->suspend_noirq) {
|
||||
error = drv->pm->suspend_noirq(dev);
|
||||
suspend_report_result(drv->pm->suspend_noirq, error);
|
||||
}
|
||||
} else {
|
||||
error = pci_legacy_suspend_late(dev, PMSG_SUSPEND);
|
||||
}
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
static int pci_pm_resume(struct device *dev)
|
||||
{
|
||||
struct pci_dev *pci_dev = to_pci_dev(dev);
|
||||
struct device_driver *drv = dev->driver;
|
||||
int error;
|
||||
|
||||
pci_fixup_device(pci_fixup_resume, pci_dev);
|
||||
|
||||
if (drv && drv->pm) {
|
||||
error = drv->pm->resume ? drv->pm->resume(dev) :
|
||||
pci_default_pm_resume(pci_dev);
|
||||
} else {
|
||||
error = pci_legacy_resume(dev);
|
||||
}
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
static int pci_pm_resume_noirq(struct device *dev)
|
||||
{
|
||||
struct pci_dev *pci_dev = to_pci_dev(dev);
|
||||
struct pci_driver *drv = pci_dev->driver;
|
||||
int error = 0;
|
||||
|
||||
pci_fixup_device(pci_fixup_resume_early, pci_dev);
|
||||
|
||||
if (drv && drv->pm) {
|
||||
if (drv->pm->resume_noirq)
|
||||
error = drv->pm->resume_noirq(dev);
|
||||
} else {
|
||||
error = pci_legacy_resume_early(dev);
|
||||
}
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
#else /* !CONFIG_SUSPEND */
|
||||
|
||||
#define pci_pm_suspend NULL
|
||||
#define pci_pm_suspend_noirq NULL
|
||||
#define pci_pm_resume NULL
|
||||
#define pci_pm_resume_noirq NULL
|
||||
|
||||
#endif /* !CONFIG_SUSPEND */
|
||||
|
||||
#ifdef CONFIG_HIBERNATION
|
||||
|
||||
static int pci_pm_freeze(struct device *dev)
|
||||
{
|
||||
struct pci_dev *pci_dev = to_pci_dev(dev);
|
||||
struct device_driver *drv = dev->driver;
|
||||
int error = 0;
|
||||
|
||||
if (drv && drv->pm) {
|
||||
if (drv->pm->freeze) {
|
||||
error = drv->pm->freeze(dev);
|
||||
suspend_report_result(drv->pm->freeze, error);
|
||||
} else {
|
||||
pci_default_pm_suspend(pci_dev);
|
||||
}
|
||||
} else {
|
||||
error = pci_legacy_suspend(dev, PMSG_FREEZE);
|
||||
pci_fixup_device(pci_fixup_suspend, pci_dev);
|
||||
}
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
static int pci_pm_freeze_noirq(struct device *dev)
|
||||
{
|
||||
struct pci_dev *pci_dev = to_pci_dev(dev);
|
||||
struct pci_driver *drv = pci_dev->driver;
|
||||
int error = 0;
|
||||
|
||||
if (drv && drv->pm) {
|
||||
if (drv->pm->freeze_noirq) {
|
||||
error = drv->pm->freeze_noirq(dev);
|
||||
suspend_report_result(drv->pm->freeze_noirq, error);
|
||||
}
|
||||
} else {
|
||||
error = pci_legacy_suspend_late(dev, PMSG_FREEZE);
|
||||
}
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
static int pci_pm_thaw(struct device *dev)
|
||||
{
|
||||
struct device_driver *drv = dev->driver;
|
||||
int error = 0;
|
||||
|
||||
if (drv && drv->pm) {
|
||||
if (drv->pm->thaw)
|
||||
error = drv->pm->thaw(dev);
|
||||
} else {
|
||||
pci_fixup_device(pci_fixup_resume, to_pci_dev(dev));
|
||||
error = pci_legacy_resume(dev);
|
||||
}
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
static int pci_pm_thaw_noirq(struct device *dev)
|
||||
{
|
||||
struct pci_dev *pci_dev = to_pci_dev(dev);
|
||||
struct pci_driver *drv = pci_dev->driver;
|
||||
int error = 0;
|
||||
|
||||
if (drv && drv->pm) {
|
||||
if (drv->pm->thaw_noirq)
|
||||
error = drv->pm->thaw_noirq(dev);
|
||||
} else {
|
||||
pci_fixup_device(pci_fixup_resume_early, pci_dev);
|
||||
error = pci_legacy_resume_early(dev);
|
||||
}
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
static int pci_pm_poweroff(struct device *dev)
|
||||
{
|
||||
struct device_driver *drv = dev->driver;
|
||||
int error = 0;
|
||||
|
||||
pci_fixup_device(pci_fixup_suspend, to_pci_dev(dev));
|
||||
|
||||
if (drv && drv->pm) {
|
||||
if (drv->pm->poweroff) {
|
||||
error = drv->pm->poweroff(dev);
|
||||
suspend_report_result(drv->pm->poweroff, error);
|
||||
}
|
||||
} else {
|
||||
error = pci_legacy_suspend(dev, PMSG_HIBERNATE);
|
||||
}
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
static int pci_pm_poweroff_noirq(struct device *dev)
|
||||
{
|
||||
struct pci_dev *pci_dev = to_pci_dev(dev);
|
||||
struct pci_driver *drv = pci_dev->driver;
|
||||
int error = 0;
|
||||
|
||||
if (drv && drv->pm) {
|
||||
if (drv->pm->poweroff_noirq) {
|
||||
error = drv->pm->poweroff_noirq(dev);
|
||||
suspend_report_result(drv->pm->poweroff_noirq, error);
|
||||
}
|
||||
} else {
|
||||
error = pci_legacy_suspend_late(dev, PMSG_HIBERNATE);
|
||||
}
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
static int pci_pm_restore(struct device *dev)
|
||||
{
|
||||
struct pci_dev *pci_dev = to_pci_dev(dev);
|
||||
struct device_driver *drv = dev->driver;
|
||||
int error;
|
||||
|
||||
if (drv && drv->pm) {
|
||||
error = drv->pm->restore ? drv->pm->restore(dev) :
|
||||
pci_default_pm_resume(pci_dev);
|
||||
} else {
|
||||
error = pci_legacy_resume(dev);
|
||||
}
|
||||
pci_fixup_device(pci_fixup_resume, pci_dev);
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
static int pci_pm_restore_noirq(struct device *dev)
|
||||
{
|
||||
struct pci_dev *pci_dev = to_pci_dev(dev);
|
||||
struct pci_driver *drv = pci_dev->driver;
|
||||
int error = 0;
|
||||
|
||||
pci_fixup_device(pci_fixup_resume, pci_dev);
|
||||
|
||||
if (drv && drv->pm) {
|
||||
if (drv->pm->restore_noirq)
|
||||
error = drv->pm->restore_noirq(dev);
|
||||
} else {
|
||||
error = pci_legacy_resume_early(dev);
|
||||
}
|
||||
pci_fixup_device(pci_fixup_resume_early, pci_dev);
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
#else /* !CONFIG_HIBERNATION */
|
||||
|
||||
#define pci_pm_freeze NULL
|
||||
#define pci_pm_freeze_noirq NULL
|
||||
#define pci_pm_thaw NULL
|
||||
#define pci_pm_thaw_noirq NULL
|
||||
#define pci_pm_poweroff NULL
|
||||
#define pci_pm_poweroff_noirq NULL
|
||||
#define pci_pm_restore NULL
|
||||
#define pci_pm_restore_noirq NULL
|
||||
|
||||
#endif /* !CONFIG_HIBERNATION */
|
||||
|
||||
struct pm_ext_ops pci_pm_ops = {
|
||||
.base = {
|
||||
.prepare = pci_pm_prepare,
|
||||
.complete = pci_pm_complete,
|
||||
.suspend = pci_pm_suspend,
|
||||
.resume = pci_pm_resume,
|
||||
.freeze = pci_pm_freeze,
|
||||
.thaw = pci_pm_thaw,
|
||||
.poweroff = pci_pm_poweroff,
|
||||
.restore = pci_pm_restore,
|
||||
},
|
||||
.suspend_noirq = pci_pm_suspend_noirq,
|
||||
.resume_noirq = pci_pm_resume_noirq,
|
||||
.freeze_noirq = pci_pm_freeze_noirq,
|
||||
.thaw_noirq = pci_pm_thaw_noirq,
|
||||
.poweroff_noirq = pci_pm_poweroff_noirq,
|
||||
.restore_noirq = pci_pm_restore_noirq,
|
||||
};
|
||||
|
||||
#define PCI_PM_OPS_PTR &pci_pm_ops
|
||||
|
||||
#else /* !CONFIG_PM_SLEEP */
|
||||
|
||||
#define PCI_PM_OPS_PTR NULL
|
||||
|
||||
#endif /* !CONFIG_PM_SLEEP */
|
||||
|
||||
/**
|
||||
* __pci_register_driver - register a new pci driver
|
||||
* @drv: the driver structure to register
|
||||
|
|
@ -390,6 +690,9 @@ int __pci_register_driver(struct pci_driver *drv, struct module *owner,
|
|||
drv->driver.owner = owner;
|
||||
drv->driver.mod_name = mod_name;
|
||||
|
||||
if (drv->pm)
|
||||
drv->driver.pm = &drv->pm->base;
|
||||
|
||||
spin_lock_init(&drv->dynids.lock);
|
||||
INIT_LIST_HEAD(&drv->dynids.list);
|
||||
|
||||
|
|
@ -515,12 +818,9 @@ struct bus_type pci_bus_type = {
|
|||
.uevent = pci_uevent,
|
||||
.probe = pci_device_probe,
|
||||
.remove = pci_device_remove,
|
||||
.suspend = pci_device_suspend,
|
||||
.suspend_late = pci_device_suspend_late,
|
||||
.resume_early = pci_device_resume_early,
|
||||
.resume = pci_device_resume,
|
||||
.shutdown = pci_device_shutdown,
|
||||
.dev_attrs = pci_dev_attrs,
|
||||
.pm = PCI_PM_OPS_PTR,
|
||||
};
|
||||
|
||||
static int __init pci_driver_init(void)
|
||||
|
|
|
|||
|
|
@ -389,7 +389,7 @@ struct pci_driver {
|
|||
int (*resume_early) (struct pci_dev *dev);
|
||||
int (*resume) (struct pci_dev *dev); /* Device woken up */
|
||||
void (*shutdown) (struct pci_dev *dev);
|
||||
|
||||
struct pm_ext_ops *pm;
|
||||
struct pci_error_handlers *err_handler;
|
||||
struct device_driver driver;
|
||||
struct pci_dynids dynids;
|
||||
|
|
|
|||
Loading…
Reference in New Issue