diff options
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pci-acpi.c | 90 | ||||
| -rw-r--r-- | drivers/pci/pci-driver.c | 2 | ||||
| -rw-r--r-- | drivers/pci/pci-mid.c | 10 | ||||
| -rw-r--r-- | drivers/pci/pci.c | 68 | ||||
| -rw-r--r-- | drivers/pci/pci.h | 9 | ||||
| -rw-r--r-- | drivers/pci/pcie/pme.c | 16 |
6 files changed, 71 insertions, 124 deletions
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index 47070cff508c..e70c1c7ba1bf 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -394,29 +394,26 @@ bool pciehp_is_native(struct pci_dev *pdev) /** * pci_acpi_wake_bus - Root bus wakeup notification fork function. - * @work: Work item to handle. + * @context: Device wakeup context. */ -static void pci_acpi_wake_bus(struct work_struct *work) +static void pci_acpi_wake_bus(struct acpi_device_wakeup_context *context) { struct acpi_device *adev; struct acpi_pci_root *root; - adev = container_of(work, struct acpi_device, wakeup.context.work); + adev = container_of(context, struct acpi_device, wakeup.context); root = acpi_driver_data(adev); pci_pme_wakeup_bus(root->bus); } /** * pci_acpi_wake_dev - PCI device wakeup notification work function. - * @handle: ACPI handle of a device the notification is for. - * @work: Work item to handle. + * @context: Device wakeup context. */ -static void pci_acpi_wake_dev(struct work_struct *work) +static void pci_acpi_wake_dev(struct acpi_device_wakeup_context *context) { - struct acpi_device_wakeup_context *context; struct pci_dev *pci_dev; - context = container_of(work, struct acpi_device_wakeup_context, work); pci_dev = to_pci_dev(context->dev); if (pci_dev->pme_poll) @@ -424,7 +421,7 @@ static void pci_acpi_wake_dev(struct work_struct *work) if (pci_dev->current_state == PCI_D3cold) { pci_wakeup_event(pci_dev); - pm_runtime_resume(&pci_dev->dev); + pm_request_resume(&pci_dev->dev); return; } @@ -433,7 +430,7 @@ static void pci_acpi_wake_dev(struct work_struct *work) pci_check_pme_status(pci_dev); pci_wakeup_event(pci_dev); - pm_runtime_resume(&pci_dev->dev); + pm_request_resume(&pci_dev->dev); pci_pme_wakeup_bus(pci_dev->subordinate); } @@ -572,67 +569,29 @@ static pci_power_t acpi_pci_get_power_state(struct pci_dev *dev) return state_conv[state]; } -static bool acpi_pci_can_wakeup(struct pci_dev *dev) -{ - struct acpi_device *adev = ACPI_COMPANION(&dev->dev); - return adev ? acpi_device_can_wakeup(adev) : false; -} - -static void acpi_pci_propagate_wakeup_enable(struct pci_bus *bus, bool enable) -{ - while (bus->parent) { - if (!acpi_pm_device_sleep_wake(&bus->self->dev, enable)) - return; - bus = bus->parent; - } - - /* We have reached the root bus. */ - if (bus->bridge) - acpi_pm_device_sleep_wake(bus->bridge, enable); -} - -static int acpi_pci_sleep_wake(struct pci_dev *dev, bool enable) -{ - if (acpi_pci_can_wakeup(dev)) - return acpi_pm_device_sleep_wake(&dev->dev, enable); - - acpi_pci_propagate_wakeup_enable(dev->bus, enable); - return 0; -} - -static void acpi_pci_propagate_run_wake(struct pci_bus *bus, bool enable) +static int acpi_pci_propagate_wakeup(struct pci_bus *bus, bool enable) { while (bus->parent) { - struct pci_dev *bridge = bus->self; + if (acpi_pm_device_can_wakeup(&bus->self->dev)) + return acpi_pm_set_device_wakeup(&bus->self->dev, enable); - if (bridge->pme_interrupt) - return; - if (!acpi_pm_device_run_wake(&bridge->dev, enable)) - return; bus = bus->parent; } /* We have reached the root bus. */ - if (bus->bridge) - acpi_pm_device_run_wake(bus->bridge, enable); + if (bus->bridge) { + if (acpi_pm_device_can_wakeup(bus->bridge)) + return acpi_pm_set_device_wakeup(bus->bridge, enable); + } + return 0; } -static int acpi_pci_run_wake(struct pci_dev *dev, bool enable) +static int acpi_pci_wakeup(struct pci_dev *dev, bool enable) { - /* - * Per PCI Express Base Specification Revision 2.0 section - * 5.3.3.2 Link Wakeup, platform support is needed for D3cold - * waking up to power on the main link even if there is PME - * support for D3cold - */ - if (dev->pme_interrupt && !dev->runtime_d3cold) - return 0; - - if (!acpi_pm_device_run_wake(&dev->dev, enable)) - return 0; + if (acpi_pm_device_can_wakeup(&dev->dev)) + return acpi_pm_set_device_wakeup(&dev->dev, enable); - acpi_pci_propagate_run_wake(dev->bus, enable); - return 0; + return acpi_pci_propagate_wakeup(dev->bus, enable); } static bool acpi_pci_need_resume(struct pci_dev *dev) @@ -656,8 +615,7 @@ static const struct pci_platform_pm_ops acpi_pci_platform_pm = { .set_state = acpi_pci_set_power_state, .get_state = acpi_pci_get_power_state, .choose_state = acpi_pci_choose_state, - .sleep_wake = acpi_pci_sleep_wake, - .run_wake = acpi_pci_run_wake, + .set_wakeup = acpi_pci_wakeup, .need_resume = acpi_pci_need_resume, }; @@ -780,9 +738,7 @@ static void pci_acpi_setup(struct device *dev) return; device_set_wakeup_capable(dev, true); - acpi_pci_sleep_wake(pci_dev, false); - if (adev->wakeup.flags.run_wake) - device_set_run_wake(dev, true); + acpi_pci_wakeup(pci_dev, false); } static void pci_acpi_cleanup(struct device *dev) @@ -793,10 +749,8 @@ static void pci_acpi_cleanup(struct device *dev) return; pci_acpi_remove_pm_notifier(adev); - if (adev->wakeup.flags.valid) { + if (adev->wakeup.flags.valid) device_set_wakeup_capable(dev, false); - device_set_run_wake(dev, false); - } } static bool pci_acpi_bus_match(struct device *dev) diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index 00e10bf7f6a2..df4aead394f2 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -1219,7 +1219,7 @@ static int pci_pm_runtime_resume(struct device *dev) pci_restore_standard_config(pci_dev); pci_fixup_device(pci_fixup_resume_early, pci_dev); - __pci_enable_wake(pci_dev, PCI_D0, true, false); + pci_enable_wake(pci_dev, PCI_D0, false); pci_fixup_device(pci_fixup_resume, pci_dev); rc = pm->runtime_resume(dev); diff --git a/drivers/pci/pci-mid.c b/drivers/pci/pci-mid.c index 1c4af7227bca..a4ac940c7696 100644 --- a/drivers/pci/pci-mid.c +++ b/drivers/pci/pci-mid.c @@ -39,12 +39,7 @@ static pci_power_t mid_pci_choose_state(struct pci_dev *pdev) return PCI_D3hot; } -static int mid_pci_sleep_wake(struct pci_dev *dev, bool enable) -{ - return 0; -} - -static int mid_pci_run_wake(struct pci_dev *dev, bool enable) +static int mid_pci_wakeup(struct pci_dev *dev, bool enable) { return 0; } @@ -59,8 +54,7 @@ static const struct pci_platform_pm_ops mid_pci_platform_pm = { .set_state = mid_pci_set_power_state, .get_state = mid_pci_get_power_state, .choose_state = mid_pci_choose_state, - .sleep_wake = mid_pci_sleep_wake, - .run_wake = mid_pci_run_wake, + .set_wakeup = mid_pci_wakeup, .need_resume = mid_pci_need_resume, }; diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 563901cd9c06..0b5302a9fdae 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -574,8 +574,7 @@ static const struct pci_platform_pm_ops *pci_platform_pm; int pci_set_platform_pm(const struct pci_platform_pm_ops *ops) { if (!ops->is_manageable || !ops->set_state || !ops->get_state || - !ops->choose_state || !ops->sleep_wake || !ops->run_wake || - !ops->need_resume) + !ops->choose_state || !ops->set_wakeup || !ops->need_resume) return -EINVAL; pci_platform_pm = ops; return 0; @@ -603,16 +602,10 @@ static inline pci_power_t platform_pci_choose_state(struct pci_dev *dev) pci_platform_pm->choose_state(dev) : PCI_POWER_ERROR; } -static inline int platform_pci_sleep_wake(struct pci_dev *dev, bool enable) +static inline int platform_pci_set_wakeup(struct pci_dev *dev, bool enable) { return pci_platform_pm ? - pci_platform_pm->sleep_wake(dev, enable) : -ENODEV; -} - -static inline int platform_pci_run_wake(struct pci_dev *dev, bool enable) -{ - return pci_platform_pm ? - pci_platform_pm->run_wake(dev, enable) : -ENODEV; + pci_platform_pm->set_wakeup(dev, enable) : -ENODEV; } static inline bool platform_pci_need_resume(struct pci_dev *dev) @@ -1805,6 +1798,23 @@ static void __pci_pme_active(struct pci_dev *dev, bool enable) pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, pmcsr); } +static void pci_pme_restore(struct pci_dev *dev) +{ + u16 pmcsr; + + if (!dev->pme_support) + return; + + pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr); + if (dev->wakeup_prepared) { + pmcsr |= PCI_PM_CTRL_PME_ENABLE; + } else { + pmcsr &= ~PCI_PM_CTRL_PME_ENABLE; + pmcsr |= PCI_PM_CTRL_PME_STATUS; + } + pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, pmcsr); +} + /** * pci_pme_active - enable or disable PCI device's PME# function * @dev: PCI device to handle. @@ -1872,10 +1882,9 @@ void pci_pme_active(struct pci_dev *dev, bool enable) EXPORT_SYMBOL(pci_pme_active); /** - * __pci_enable_wake - enable PCI device as wakeup event source + * pci_enable_wake - enable PCI device as wakeup event source * @dev: PCI device affected * @state: PCI state from which device will issue wakeup events - * @runtime: True if the events are to be generated at run time * @enable: True to enable event generation; false to disable * * This enables the device as a wakeup event source, or disables it. @@ -1891,17 +1900,18 @@ EXPORT_SYMBOL(pci_pme_active); * Error code depending on the platform is returned if both the platform and * the native mechanism fail to enable the generation of wake-up events */ -int __pci_enable_wake(struct pci_dev *dev, pci_power_t state, - bool runtime, bool enable) +int pci_enable_wake(struct pci_dev *dev, pci_power_t state, bool enable) { int ret = 0; - if (enable && !runtime && !device_may_wakeup(&dev->dev)) - return -EINVAL; - - /* Don't do the same thing twice in a row for one device. */ - if (!!enable == !!dev->wakeup_prepared) + /* + * Don't do the same thing twice in a row for one device, but restore + * PME Enable in case it has been updated by config space restoration. + */ + if (!!enable == !!dev->wakeup_prepared) { + pci_pme_restore(dev); return 0; + } /* * According to "PCI System Architecture" 4th ed. by Tom Shanley & Don @@ -1916,24 +1926,20 @@ int __pci_enable_wake(struct pci_dev *dev, pci_power_t state, pci_pme_active(dev, true); else ret = 1; - error = runtime ? platform_pci_run_wake(dev, true) : - platform_pci_sleep_wake(dev, true); + error = platform_pci_set_wakeup(dev, true); if (ret) ret = error; if (!ret) dev->wakeup_prepared = true; } else { - if (runtime) - platform_pci_run_wake(dev, false); - else - platform_pci_sleep_wake(dev, false); + platform_pci_set_wakeup(dev, false); pci_pme_active(dev, false); dev->wakeup_prepared = false; } return ret; } -EXPORT_SYMBOL(__pci_enable_wake); +EXPORT_SYMBOL(pci_enable_wake); /** * pci_wake_from_d3 - enable/disable device to wake up from D3_hot or D3_cold @@ -2075,12 +2081,12 @@ int pci_finish_runtime_suspend(struct pci_dev *dev) dev->runtime_d3cold = target_state == PCI_D3cold; - __pci_enable_wake(dev, target_state, true, pci_dev_run_wake(dev)); + pci_enable_wake(dev, target_state, pci_dev_run_wake(dev)); error = pci_set_power_state(dev, target_state); if (error) { - __pci_enable_wake(dev, target_state, true, false); + pci_enable_wake(dev, target_state, false); dev->runtime_d3cold = false; } @@ -2099,7 +2105,7 @@ bool pci_dev_run_wake(struct pci_dev *dev) { struct pci_bus *bus = dev->bus; - if (device_run_wake(&dev->dev)) + if (device_can_wakeup(&dev->dev)) return true; if (!dev->pme_support) @@ -2112,7 +2118,7 @@ bool pci_dev_run_wake(struct pci_dev *dev) while (bus->parent) { struct pci_dev *bridge = bus->self; - if (device_run_wake(&bridge->dev)) + if (device_can_wakeup(&bridge->dev)) return true; bus = bus->parent; @@ -2120,7 +2126,7 @@ bool pci_dev_run_wake(struct pci_dev *dev) /* We have reached the root bus. */ if (bus->bridge) - return device_run_wake(bus->bridge); + return device_can_wakeup(bus->bridge); return false; } diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index f8113e5b9812..240b2c0fed4b 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -47,11 +47,7 @@ int pci_probe_reset_function(struct pci_dev *dev); * platform; to be used during system-wide transitions from a * sleeping state to the working state and vice versa * - * @sleep_wake: enables/disables the system wake up capability of given device - * - * @run_wake: enables/disables the platform to generate run-time wake-up events - * for given device (the device's wake-up capability has to be - * enabled by @sleep_wake for this feature to work) + * @set_wakeup: enables/disables wakeup capability for the device * * @need_resume: returns 'true' if the given device (which is currently * suspended) needs to be resumed to be configured for system @@ -65,8 +61,7 @@ struct pci_platform_pm_ops { int (*set_state)(struct pci_dev *dev, pci_power_t state); pci_power_t (*get_state)(struct pci_dev *dev); pci_power_t (*choose_state)(struct pci_dev *dev); - int (*sleep_wake)(struct pci_dev *dev, bool enable); - int (*run_wake)(struct pci_dev *dev, bool enable); + int (*set_wakeup)(struct pci_dev *dev, bool enable); bool (*need_resume)(struct pci_dev *dev); }; diff --git a/drivers/pci/pcie/pme.c b/drivers/pci/pcie/pme.c index 2dd1c68e6de8..80e58d25006d 100644 --- a/drivers/pci/pcie/pme.c +++ b/drivers/pci/pcie/pme.c @@ -294,31 +294,29 @@ static irqreturn_t pcie_pme_irq(int irq, void *context) } /** - * pcie_pme_set_native - Set the PME interrupt flag for given device. + * pcie_pme_can_wakeup - Set the wakeup capability flag. * @dev: PCI device to handle. * @ign: Ignored. */ -static int pcie_pme_set_native(struct pci_dev *dev, void *ign) +static int pcie_pme_can_wakeup(struct pci_dev *dev, void *ign) { - device_set_run_wake(&dev->dev, true); - dev->pme_interrupt = true; + device_set_wakeup_capable(&dev->dev, true); return 0; } /** - * pcie_pme_mark_devices - Set the PME interrupt flag for devices below a port. + * pcie_pme_mark_devices - Set the wakeup flag for devices below a port. * @port: PCIe root port or event collector to handle. * * For each device below given root port, including the port itself (or for each * root complex integrated endpoint if @port is a root complex event collector) - * set the flag indicating that it can signal run-time wake-up events via PCIe - * PME interrupts. + * set the flag indicating that it can signal run-time wake-up events. */ static void pcie_pme_mark_devices(struct pci_dev *port) { - pcie_pme_set_native(port, NULL); + pcie_pme_can_wakeup(port, NULL); if (port->subordinate) - pci_walk_bus(port->subordinate, pcie_pme_set_native, NULL); + pci_walk_bus(port->subordinate, pcie_pme_can_wakeup, NULL); } /** |