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https://github.com/torvalds/linux.git
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Merge branch 'acpi-pci-hotplug'
* acpi-pci-hotplug: (23 commits) ACPI / hotplug / PCI: Use pci_device_is_present() ACPI / hotplug / PCI: Add ACPIPHP contexts to devices handled by PCIeHP ACPI / hotplug / PCI: Rename register_slot() to acpiphp_add_context() ACPI / hotplug / PCI: Execute _EJ0 under the ACPI scan lock ACPI / hotplug / PCI: Rework acpiphp_check_host_bridge() ACPI / hotplug / PCI: Hotplug notifications from acpi_bus_notify() ACPI / hotplug / PCI: Simplify acpi_install_hotplug_notify_handler() ACPI / hotplug / PCI: Rework the handling of eject requests ACPI / hotplug / PCI: Consolidate ACPIPHP with ACPI core hotplug ACPI / hotplug / PCI: Define hotplug context lock in the core ACPI / hotplug: Fix potential race in acpi_bus_notify() ACPICA: Introduce acpi_get_data_full() and rework acpi_get_data() ACPI / hotplug / PCI: Do not pass ACPI handle to hotplug_event() ACPI / hotplug / PCI: Use acpi_handle_debug() in hotplug_event() ACPI / hotplug / PCI: Simplify hotplug_event() ACPI / hotplug / PCI: Drop crit_sect locking ACPI / hotplug / PCI: Drop acpiphp_bus_add() ACPI / hotplug / PCI: Store acpi_device pointer in acpiphp_context ACPI / hotplug / PCI: Rework acpiphp_no_hotplug() ACPI / hotplug / PCI: Drop acpiphp_bus_trim() ...
This commit is contained in:
commit
d983f93328
@ -923,19 +923,22 @@ ACPI_EXPORT_SYMBOL(acpi_detach_data)
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/*******************************************************************************
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/*******************************************************************************
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*
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*
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* FUNCTION: acpi_get_data
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* FUNCTION: acpi_get_data_full
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*
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*
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* PARAMETERS: obj_handle - Namespace node
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* PARAMETERS: obj_handle - Namespace node
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* handler - Handler used in call to attach_data
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* handler - Handler used in call to attach_data
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* data - Where the data is returned
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* data - Where the data is returned
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* callback - function to execute before returning
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*
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*
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* RETURN: Status
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* RETURN: Status
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*
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*
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* DESCRIPTION: Retrieve data that was previously attached to a namespace node.
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* DESCRIPTION: Retrieve data that was previously attached to a namespace node
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* and execute a callback before returning.
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*
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*
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******************************************************************************/
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******************************************************************************/
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acpi_status
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acpi_status
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acpi_get_data(acpi_handle obj_handle, acpi_object_handler handler, void **data)
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acpi_get_data_full(acpi_handle obj_handle, acpi_object_handler handler,
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void **data, void (*callback)(void *))
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{
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{
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struct acpi_namespace_node *node;
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struct acpi_namespace_node *node;
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acpi_status status;
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acpi_status status;
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@ -960,10 +963,34 @@ acpi_get_data(acpi_handle obj_handle, acpi_object_handler handler, void **data)
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}
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}
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status = acpi_ns_get_attached_data(node, handler, data);
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status = acpi_ns_get_attached_data(node, handler, data);
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if (ACPI_SUCCESS(status) && callback) {
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callback(*data);
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}
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unlock_and_exit:
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unlock_and_exit:
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(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
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(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
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return (status);
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return (status);
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}
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}
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ACPI_EXPORT_SYMBOL(acpi_get_data_full)
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/*******************************************************************************
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*
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* FUNCTION: acpi_get_data
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*
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* PARAMETERS: obj_handle - Namespace node
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* handler - Handler used in call to attach_data
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* data - Where the data is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Retrieve data that was previously attached to a namespace node.
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*
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******************************************************************************/
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acpi_status
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acpi_get_data(acpi_handle obj_handle, acpi_object_handler handler, void **data)
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{
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return acpi_get_data_full(obj_handle, handler, data, NULL);
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}
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ACPI_EXPORT_SYMBOL(acpi_get_data)
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ACPI_EXPORT_SYMBOL(acpi_get_data)
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@ -340,60 +340,77 @@ static void acpi_bus_osc_support(void)
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*/
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*/
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static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
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static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
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{
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{
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struct acpi_device *device = NULL;
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struct acpi_device *adev;
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struct acpi_driver *driver;
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struct acpi_driver *driver;
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acpi_status status;
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ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Notification %#02x to handle %p\n",
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u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE;
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type, handle));
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switch (type) {
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switch (type) {
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case ACPI_NOTIFY_BUS_CHECK:
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case ACPI_NOTIFY_BUS_CHECK:
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/* TBD */
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acpi_handle_debug(handle, "ACPI_NOTIFY_BUS_CHECK event\n");
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break;
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break;
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case ACPI_NOTIFY_DEVICE_CHECK:
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case ACPI_NOTIFY_DEVICE_CHECK:
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/* TBD */
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acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK event\n");
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break;
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break;
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case ACPI_NOTIFY_DEVICE_WAKE:
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case ACPI_NOTIFY_DEVICE_WAKE:
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/* TBD */
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acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_WAKE event\n");
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break;
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break;
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case ACPI_NOTIFY_EJECT_REQUEST:
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case ACPI_NOTIFY_EJECT_REQUEST:
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/* TBD */
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acpi_handle_debug(handle, "ACPI_NOTIFY_EJECT_REQUEST event\n");
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break;
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break;
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case ACPI_NOTIFY_DEVICE_CHECK_LIGHT:
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case ACPI_NOTIFY_DEVICE_CHECK_LIGHT:
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acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK_LIGHT event\n");
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/* TBD: Exactly what does 'light' mean? */
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/* TBD: Exactly what does 'light' mean? */
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break;
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break;
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case ACPI_NOTIFY_FREQUENCY_MISMATCH:
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case ACPI_NOTIFY_FREQUENCY_MISMATCH:
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/* TBD */
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acpi_handle_err(handle, "Device cannot be configured due "
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"to a frequency mismatch\n");
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break;
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break;
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case ACPI_NOTIFY_BUS_MODE_MISMATCH:
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case ACPI_NOTIFY_BUS_MODE_MISMATCH:
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/* TBD */
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acpi_handle_err(handle, "Device cannot be configured due "
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"to a bus mode mismatch\n");
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break;
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break;
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case ACPI_NOTIFY_POWER_FAULT:
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case ACPI_NOTIFY_POWER_FAULT:
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/* TBD */
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acpi_handle_err(handle, "Device has suffered a power fault\n");
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break;
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break;
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default:
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default:
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ACPI_DEBUG_PRINT((ACPI_DB_INFO,
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acpi_handle_warn(handle, "Unsupported event type 0x%x\n", type);
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"Received unknown/unsupported notification [%08x]\n",
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ost_code = ACPI_OST_SC_UNRECOGNIZED_NOTIFY;
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type));
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goto err;
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break;
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}
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}
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acpi_bus_get_device(handle, &device);
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adev = acpi_bus_get_acpi_device(handle);
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if (device) {
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if (!adev)
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driver = device->driver;
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goto err;
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if (driver && driver->ops.notify &&
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(driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS))
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driver = adev->driver;
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driver->ops.notify(device, type);
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if (driver && driver->ops.notify &&
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(driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS))
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driver->ops.notify(adev, type);
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switch (type) {
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case ACPI_NOTIFY_BUS_CHECK:
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case ACPI_NOTIFY_DEVICE_CHECK:
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case ACPI_NOTIFY_EJECT_REQUEST:
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status = acpi_hotplug_execute(acpi_device_hotplug, adev, type);
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if (ACPI_SUCCESS(status))
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return;
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default:
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break;
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}
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}
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acpi_bus_put_acpi_device(adev);
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return;
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err:
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acpi_evaluate_hotplug_ost(handle, type, ost_code, NULL);
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}
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}
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/* --------------------------------------------------------------------------
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/* --------------------------------------------------------------------------
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@ -73,6 +73,7 @@ static inline void acpi_lpss_init(void) {}
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#endif
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#endif
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bool acpi_queue_hotplug_work(struct work_struct *work);
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bool acpi_queue_hotplug_work(struct work_struct *work);
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void acpi_device_hotplug(void *data, u32 src);
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bool acpi_scan_is_offline(struct acpi_device *adev, bool uevent);
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bool acpi_scan_is_offline(struct acpi_device *adev, bool uevent);
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/* --------------------------------------------------------------------------
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/* --------------------------------------------------------------------------
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@ -51,7 +51,7 @@ static void acpi_pci_root_remove(struct acpi_device *device);
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static int acpi_pci_root_scan_dependent(struct acpi_device *adev)
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static int acpi_pci_root_scan_dependent(struct acpi_device *adev)
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{
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{
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acpiphp_check_host_bridge(adev->handle);
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acpiphp_check_host_bridge(adev);
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return 0;
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return 0;
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}
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}
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@ -41,6 +41,7 @@ static DEFINE_MUTEX(acpi_scan_lock);
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static LIST_HEAD(acpi_scan_handlers_list);
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static LIST_HEAD(acpi_scan_handlers_list);
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DEFINE_MUTEX(acpi_device_lock);
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DEFINE_MUTEX(acpi_device_lock);
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LIST_HEAD(acpi_wakeup_device_list);
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LIST_HEAD(acpi_wakeup_device_list);
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static DEFINE_MUTEX(acpi_hp_context_lock);
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struct acpi_device_bus_id{
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struct acpi_device_bus_id{
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char bus_id[15];
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char bus_id[15];
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@ -60,6 +61,16 @@ void acpi_scan_lock_release(void)
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}
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}
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EXPORT_SYMBOL_GPL(acpi_scan_lock_release);
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EXPORT_SYMBOL_GPL(acpi_scan_lock_release);
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||||||
|
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void acpi_lock_hp_context(void)
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||||||
|
{
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||||||
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mutex_lock(&acpi_hp_context_lock);
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||||||
|
}
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||||||
|
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||||||
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void acpi_unlock_hp_context(void)
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||||||
|
{
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||||||
|
mutex_unlock(&acpi_hp_context_lock);
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||||||
|
}
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||||||
|
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||||||
int acpi_scan_add_handler(struct acpi_scan_handler *handler)
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int acpi_scan_add_handler(struct acpi_scan_handler *handler)
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||||||
{
|
{
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||||||
if (!handler || !handler->attach)
|
if (!handler || !handler->attach)
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||||||
@ -439,92 +450,76 @@ static int acpi_scan_bus_check(struct acpi_device *adev)
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|||||||
return 0;
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return 0;
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||||||
}
|
}
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||||||
|
|
||||||
static void acpi_device_hotplug(void *data, u32 src)
|
static int acpi_generic_hotplug_event(struct acpi_device *adev, u32 type)
|
||||||
|
{
|
||||||
|
switch (type) {
|
||||||
|
case ACPI_NOTIFY_BUS_CHECK:
|
||||||
|
return acpi_scan_bus_check(adev);
|
||||||
|
case ACPI_NOTIFY_DEVICE_CHECK:
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||||||
|
return acpi_scan_device_check(adev);
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||||||
|
case ACPI_NOTIFY_EJECT_REQUEST:
|
||||||
|
case ACPI_OST_EC_OSPM_EJECT:
|
||||||
|
if (adev->handler && !adev->handler->hotplug.enabled) {
|
||||||
|
dev_info(&adev->dev, "Eject disabled\n");
|
||||||
|
return -EPERM;
|
||||||
|
}
|
||||||
|
acpi_evaluate_hotplug_ost(adev->handle, ACPI_NOTIFY_EJECT_REQUEST,
|
||||||
|
ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
|
||||||
|
return acpi_scan_hot_remove(adev);
|
||||||
|
}
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
|
||||||
|
void acpi_device_hotplug(void *data, u32 src)
|
||||||
{
|
{
|
||||||
u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE;
|
u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE;
|
||||||
struct acpi_device *adev = data;
|
struct acpi_device *adev = data;
|
||||||
int error;
|
int error = -ENODEV;
|
||||||
|
|
||||||
lock_device_hotplug();
|
lock_device_hotplug();
|
||||||
mutex_lock(&acpi_scan_lock);
|
mutex_lock(&acpi_scan_lock);
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* The device object's ACPI handle cannot become invalid as long as we
|
* The device object's ACPI handle cannot become invalid as long as we
|
||||||
* are holding acpi_scan_lock, but it may have become invalid before
|
* are holding acpi_scan_lock, but it might have become invalid before
|
||||||
* that lock was acquired.
|
* that lock was acquired.
|
||||||
*/
|
*/
|
||||||
if (adev->handle == INVALID_ACPI_HANDLE)
|
if (adev->handle == INVALID_ACPI_HANDLE)
|
||||||
goto out;
|
goto err_out;
|
||||||
|
|
||||||
switch (src) {
|
if (adev->flags.hotplug_notify) {
|
||||||
case ACPI_NOTIFY_BUS_CHECK:
|
error = acpi_generic_hotplug_event(adev, src);
|
||||||
error = acpi_scan_bus_check(adev);
|
if (error == -EPERM) {
|
||||||
break;
|
ost_code = ACPI_OST_SC_EJECT_NOT_SUPPORTED;
|
||||||
case ACPI_NOTIFY_DEVICE_CHECK:
|
goto err_out;
|
||||||
error = acpi_scan_device_check(adev);
|
}
|
||||||
break;
|
} else {
|
||||||
case ACPI_NOTIFY_EJECT_REQUEST:
|
int (*event)(struct acpi_device *, u32);
|
||||||
case ACPI_OST_EC_OSPM_EJECT:
|
|
||||||
error = acpi_scan_hot_remove(adev);
|
acpi_lock_hp_context();
|
||||||
break;
|
event = adev->hp ? adev->hp->event : NULL;
|
||||||
default:
|
acpi_unlock_hp_context();
|
||||||
error = -EINVAL;
|
/*
|
||||||
break;
|
* There may be additional notify handlers for device objects
|
||||||
|
* without the .event() callback, so ignore them here.
|
||||||
|
*/
|
||||||
|
if (event)
|
||||||
|
error = event(adev, src);
|
||||||
|
else
|
||||||
|
goto out;
|
||||||
}
|
}
|
||||||
if (!error)
|
if (!error)
|
||||||
ost_code = ACPI_OST_SC_SUCCESS;
|
ost_code = ACPI_OST_SC_SUCCESS;
|
||||||
|
|
||||||
out:
|
err_out:
|
||||||
acpi_evaluate_hotplug_ost(adev->handle, src, ost_code, NULL);
|
acpi_evaluate_hotplug_ost(adev->handle, src, ost_code, NULL);
|
||||||
put_device(&adev->dev);
|
|
||||||
|
out:
|
||||||
|
acpi_bus_put_acpi_device(adev);
|
||||||
mutex_unlock(&acpi_scan_lock);
|
mutex_unlock(&acpi_scan_lock);
|
||||||
unlock_device_hotplug();
|
unlock_device_hotplug();
|
||||||
}
|
}
|
||||||
|
|
||||||
static void acpi_hotplug_notify_cb(acpi_handle handle, u32 type, void *data)
|
|
||||||
{
|
|
||||||
u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE;
|
|
||||||
struct acpi_device *adev;
|
|
||||||
acpi_status status;
|
|
||||||
|
|
||||||
if (acpi_bus_get_device(handle, &adev))
|
|
||||||
goto err_out;
|
|
||||||
|
|
||||||
switch (type) {
|
|
||||||
case ACPI_NOTIFY_BUS_CHECK:
|
|
||||||
acpi_handle_debug(handle, "ACPI_NOTIFY_BUS_CHECK event\n");
|
|
||||||
break;
|
|
||||||
case ACPI_NOTIFY_DEVICE_CHECK:
|
|
||||||
acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK event\n");
|
|
||||||
break;
|
|
||||||
case ACPI_NOTIFY_EJECT_REQUEST:
|
|
||||||
acpi_handle_debug(handle, "ACPI_NOTIFY_EJECT_REQUEST event\n");
|
|
||||||
if (!adev->handler)
|
|
||||||
goto err_out;
|
|
||||||
|
|
||||||
if (!adev->handler->hotplug.enabled) {
|
|
||||||
acpi_handle_err(handle, "Eject disabled\n");
|
|
||||||
ost_code = ACPI_OST_SC_EJECT_NOT_SUPPORTED;
|
|
||||||
goto err_out;
|
|
||||||
}
|
|
||||||
acpi_evaluate_hotplug_ost(handle, ACPI_NOTIFY_EJECT_REQUEST,
|
|
||||||
ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
|
|
||||||
break;
|
|
||||||
default:
|
|
||||||
/* non-hotplug event; possibly handled by other handler */
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
get_device(&adev->dev);
|
|
||||||
status = acpi_hotplug_execute(acpi_device_hotplug, adev, type);
|
|
||||||
if (ACPI_SUCCESS(status))
|
|
||||||
return;
|
|
||||||
|
|
||||||
put_device(&adev->dev);
|
|
||||||
|
|
||||||
err_out:
|
|
||||||
acpi_evaluate_hotplug_ost(handle, type, ost_code, NULL);
|
|
||||||
}
|
|
||||||
|
|
||||||
static ssize_t real_power_state_show(struct device *dev,
|
static ssize_t real_power_state_show(struct device *dev,
|
||||||
struct device_attribute *attr, char *buf)
|
struct device_attribute *attr, char *buf)
|
||||||
{
|
{
|
||||||
@ -570,8 +565,6 @@ acpi_eject_store(struct device *d, struct device_attribute *attr,
|
|||||||
if (ACPI_FAILURE(status) || !acpi_device->flags.ejectable)
|
if (ACPI_FAILURE(status) || !acpi_device->flags.ejectable)
|
||||||
return -ENODEV;
|
return -ENODEV;
|
||||||
|
|
||||||
acpi_evaluate_hotplug_ost(acpi_device->handle, ACPI_OST_EC_OSPM_EJECT,
|
|
||||||
ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
|
|
||||||
get_device(&acpi_device->dev);
|
get_device(&acpi_device->dev);
|
||||||
status = acpi_hotplug_execute(acpi_device_hotplug, acpi_device,
|
status = acpi_hotplug_execute(acpi_device_hotplug, acpi_device,
|
||||||
ACPI_OST_EC_OSPM_EJECT);
|
ACPI_OST_EC_OSPM_EJECT);
|
||||||
@ -1114,14 +1107,16 @@ static void acpi_scan_drop_device(acpi_handle handle, void *context)
|
|||||||
mutex_unlock(&acpi_device_del_lock);
|
mutex_unlock(&acpi_device_del_lock);
|
||||||
}
|
}
|
||||||
|
|
||||||
int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device)
|
static int acpi_get_device_data(acpi_handle handle, struct acpi_device **device,
|
||||||
|
void (*callback)(void *))
|
||||||
{
|
{
|
||||||
acpi_status status;
|
acpi_status status;
|
||||||
|
|
||||||
if (!device)
|
if (!device)
|
||||||
return -EINVAL;
|
return -EINVAL;
|
||||||
|
|
||||||
status = acpi_get_data(handle, acpi_scan_drop_device, (void **)device);
|
status = acpi_get_data_full(handle, acpi_scan_drop_device,
|
||||||
|
(void **)device, callback);
|
||||||
if (ACPI_FAILURE(status) || !*device) {
|
if (ACPI_FAILURE(status) || !*device) {
|
||||||
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n",
|
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n",
|
||||||
handle));
|
handle));
|
||||||
@ -1129,8 +1124,32 @@ int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device)
|
|||||||
}
|
}
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device)
|
||||||
|
{
|
||||||
|
return acpi_get_device_data(handle, device, NULL);
|
||||||
|
}
|
||||||
EXPORT_SYMBOL(acpi_bus_get_device);
|
EXPORT_SYMBOL(acpi_bus_get_device);
|
||||||
|
|
||||||
|
static void get_acpi_device(void *dev)
|
||||||
|
{
|
||||||
|
if (dev)
|
||||||
|
get_device(&((struct acpi_device *)dev)->dev);
|
||||||
|
}
|
||||||
|
|
||||||
|
struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle)
|
||||||
|
{
|
||||||
|
struct acpi_device *adev = NULL;
|
||||||
|
|
||||||
|
acpi_get_device_data(handle, &adev, get_acpi_device);
|
||||||
|
return adev;
|
||||||
|
}
|
||||||
|
|
||||||
|
void acpi_bus_put_acpi_device(struct acpi_device *adev)
|
||||||
|
{
|
||||||
|
put_device(&adev->dev);
|
||||||
|
}
|
||||||
|
|
||||||
int acpi_device_add(struct acpi_device *device,
|
int acpi_device_add(struct acpi_device *device,
|
||||||
void (*release)(struct device *))
|
void (*release)(struct device *))
|
||||||
{
|
{
|
||||||
@ -1941,33 +1960,19 @@ void acpi_scan_hotplug_enabled(struct acpi_hotplug_profile *hotplug, bool val)
|
|||||||
mutex_unlock(&acpi_scan_lock);
|
mutex_unlock(&acpi_scan_lock);
|
||||||
}
|
}
|
||||||
|
|
||||||
static void acpi_scan_init_hotplug(acpi_handle handle, int type)
|
static void acpi_scan_init_hotplug(struct acpi_device *adev)
|
||||||
{
|
{
|
||||||
struct acpi_device_pnp pnp = {};
|
|
||||||
struct acpi_hardware_id *hwid;
|
struct acpi_hardware_id *hwid;
|
||||||
struct acpi_scan_handler *handler;
|
|
||||||
|
|
||||||
INIT_LIST_HEAD(&pnp.ids);
|
list_for_each_entry(hwid, &adev->pnp.ids, list) {
|
||||||
acpi_set_pnp_ids(handle, &pnp, type);
|
struct acpi_scan_handler *handler;
|
||||||
|
|
||||||
if (!pnp.type.hardware_id)
|
|
||||||
goto out;
|
|
||||||
|
|
||||||
/*
|
|
||||||
* This relies on the fact that acpi_install_notify_handler() will not
|
|
||||||
* install the same notify handler routine twice for the same handle.
|
|
||||||
*/
|
|
||||||
list_for_each_entry(hwid, &pnp.ids, list) {
|
|
||||||
handler = acpi_scan_match_handler(hwid->id, NULL);
|
handler = acpi_scan_match_handler(hwid->id, NULL);
|
||||||
if (handler) {
|
if (handler) {
|
||||||
acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
|
adev->flags.hotplug_notify = true;
|
||||||
acpi_hotplug_notify_cb, handler);
|
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
out:
|
|
||||||
acpi_free_pnp_ids(&pnp);
|
|
||||||
}
|
}
|
||||||
|
|
||||||
static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl_not_used,
|
static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl_not_used,
|
||||||
@ -1991,12 +1996,12 @@ static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl_not_used,
|
|||||||
return AE_OK;
|
return AE_OK;
|
||||||
}
|
}
|
||||||
|
|
||||||
acpi_scan_init_hotplug(handle, type);
|
|
||||||
|
|
||||||
acpi_add_single_object(&device, handle, type, sta);
|
acpi_add_single_object(&device, handle, type, sta);
|
||||||
if (!device)
|
if (!device)
|
||||||
return AE_CTRL_DEPTH;
|
return AE_CTRL_DEPTH;
|
||||||
|
|
||||||
|
acpi_scan_init_hotplug(device);
|
||||||
|
|
||||||
out:
|
out:
|
||||||
if (!*return_value)
|
if (!*return_value)
|
||||||
*return_value = device;
|
*return_value = device;
|
||||||
|
@ -93,7 +93,6 @@ struct acpiphp_slot {
|
|||||||
struct list_head funcs; /* one slot may have different
|
struct list_head funcs; /* one slot may have different
|
||||||
objects (i.e. for each function) */
|
objects (i.e. for each function) */
|
||||||
struct slot *slot;
|
struct slot *slot;
|
||||||
struct mutex crit_sect;
|
|
||||||
|
|
||||||
u8 device; /* pci device# */
|
u8 device; /* pci device# */
|
||||||
u32 flags; /* see below */
|
u32 flags; /* see below */
|
||||||
@ -117,20 +116,30 @@ struct acpiphp_func {
|
|||||||
};
|
};
|
||||||
|
|
||||||
struct acpiphp_context {
|
struct acpiphp_context {
|
||||||
acpi_handle handle;
|
struct acpi_hotplug_context hp;
|
||||||
struct acpiphp_func func;
|
struct acpiphp_func func;
|
||||||
struct acpiphp_bridge *bridge;
|
struct acpiphp_bridge *bridge;
|
||||||
unsigned int refcount;
|
unsigned int refcount;
|
||||||
};
|
};
|
||||||
|
|
||||||
|
static inline struct acpiphp_context *to_acpiphp_context(struct acpi_hotplug_context *hp)
|
||||||
|
{
|
||||||
|
return container_of(hp, struct acpiphp_context, hp);
|
||||||
|
}
|
||||||
|
|
||||||
static inline struct acpiphp_context *func_to_context(struct acpiphp_func *func)
|
static inline struct acpiphp_context *func_to_context(struct acpiphp_func *func)
|
||||||
{
|
{
|
||||||
return container_of(func, struct acpiphp_context, func);
|
return container_of(func, struct acpiphp_context, func);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
static inline struct acpi_device *func_to_acpi_device(struct acpiphp_func *func)
|
||||||
|
{
|
||||||
|
return func_to_context(func)->hp.self;
|
||||||
|
}
|
||||||
|
|
||||||
static inline acpi_handle func_to_handle(struct acpiphp_func *func)
|
static inline acpi_handle func_to_handle(struct acpiphp_func *func)
|
||||||
{
|
{
|
||||||
return func_to_context(func)->handle;
|
return func_to_acpi_device(func)->handle;
|
||||||
}
|
}
|
||||||
|
|
||||||
/*
|
/*
|
||||||
@ -158,7 +167,6 @@ struct acpiphp_attention_info
|
|||||||
|
|
||||||
#define FUNC_HAS_STA (0x00000001)
|
#define FUNC_HAS_STA (0x00000001)
|
||||||
#define FUNC_HAS_EJ0 (0x00000002)
|
#define FUNC_HAS_EJ0 (0x00000002)
|
||||||
#define FUNC_HAS_DCK (0x00000004)
|
|
||||||
|
|
||||||
/* function prototypes */
|
/* function prototypes */
|
||||||
|
|
||||||
|
@ -58,71 +58,57 @@
|
|||||||
|
|
||||||
static LIST_HEAD(bridge_list);
|
static LIST_HEAD(bridge_list);
|
||||||
static DEFINE_MUTEX(bridge_mutex);
|
static DEFINE_MUTEX(bridge_mutex);
|
||||||
static DEFINE_MUTEX(acpiphp_context_lock);
|
|
||||||
|
|
||||||
static void handle_hotplug_event(acpi_handle handle, u32 type, void *data);
|
static int acpiphp_hotplug_event(struct acpi_device *adev, u32 type);
|
||||||
static void acpiphp_sanitize_bus(struct pci_bus *bus);
|
static void acpiphp_sanitize_bus(struct pci_bus *bus);
|
||||||
static void acpiphp_set_hpp_values(struct pci_bus *bus);
|
static void acpiphp_set_hpp_values(struct pci_bus *bus);
|
||||||
static void hotplug_event(acpi_handle handle, u32 type, void *data);
|
static void hotplug_event(u32 type, struct acpiphp_context *context);
|
||||||
static void free_bridge(struct kref *kref);
|
static void free_bridge(struct kref *kref);
|
||||||
|
|
||||||
static void acpiphp_context_handler(acpi_handle handle, void *context)
|
|
||||||
{
|
|
||||||
/* Intentionally empty. */
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* acpiphp_init_context - Create hotplug context and grab a reference to it.
|
* acpiphp_init_context - Create hotplug context and grab a reference to it.
|
||||||
* @handle: ACPI object handle to create the context for.
|
* @adev: ACPI device object to create the context for.
|
||||||
*
|
*
|
||||||
* Call under acpiphp_context_lock.
|
* Call under acpi_hp_context_lock.
|
||||||
*/
|
*/
|
||||||
static struct acpiphp_context *acpiphp_init_context(acpi_handle handle)
|
static struct acpiphp_context *acpiphp_init_context(struct acpi_device *adev)
|
||||||
{
|
{
|
||||||
struct acpiphp_context *context;
|
struct acpiphp_context *context;
|
||||||
acpi_status status;
|
|
||||||
|
|
||||||
context = kzalloc(sizeof(*context), GFP_KERNEL);
|
context = kzalloc(sizeof(*context), GFP_KERNEL);
|
||||||
if (!context)
|
if (!context)
|
||||||
return NULL;
|
return NULL;
|
||||||
|
|
||||||
context->handle = handle;
|
|
||||||
context->refcount = 1;
|
context->refcount = 1;
|
||||||
status = acpi_attach_data(handle, acpiphp_context_handler, context);
|
acpi_set_hp_context(adev, &context->hp, acpiphp_hotplug_event);
|
||||||
if (ACPI_FAILURE(status)) {
|
|
||||||
kfree(context);
|
|
||||||
return NULL;
|
|
||||||
}
|
|
||||||
return context;
|
return context;
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* acpiphp_get_context - Get hotplug context and grab a reference to it.
|
* acpiphp_get_context - Get hotplug context and grab a reference to it.
|
||||||
* @handle: ACPI object handle to get the context for.
|
* @adev: ACPI device object to get the context for.
|
||||||
*
|
*
|
||||||
* Call under acpiphp_context_lock.
|
* Call under acpi_hp_context_lock.
|
||||||
*/
|
*/
|
||||||
static struct acpiphp_context *acpiphp_get_context(acpi_handle handle)
|
static struct acpiphp_context *acpiphp_get_context(struct acpi_device *adev)
|
||||||
{
|
{
|
||||||
struct acpiphp_context *context = NULL;
|
struct acpiphp_context *context;
|
||||||
acpi_status status;
|
|
||||||
void *data;
|
|
||||||
|
|
||||||
status = acpi_get_data(handle, acpiphp_context_handler, &data);
|
if (!adev->hp)
|
||||||
if (ACPI_SUCCESS(status)) {
|
return NULL;
|
||||||
context = data;
|
|
||||||
context->refcount++;
|
context = to_acpiphp_context(adev->hp);
|
||||||
}
|
context->refcount++;
|
||||||
return context;
|
return context;
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* acpiphp_put_context - Drop a reference to ACPI hotplug context.
|
* acpiphp_put_context - Drop a reference to ACPI hotplug context.
|
||||||
* @handle: ACPI object handle to put the context for.
|
* @context: ACPI hotplug context to drop a reference to.
|
||||||
*
|
*
|
||||||
* The context object is removed if there are no more references to it.
|
* The context object is removed if there are no more references to it.
|
||||||
*
|
*
|
||||||
* Call under acpiphp_context_lock.
|
* Call under acpi_hp_context_lock.
|
||||||
*/
|
*/
|
||||||
static void acpiphp_put_context(struct acpiphp_context *context)
|
static void acpiphp_put_context(struct acpiphp_context *context)
|
||||||
{
|
{
|
||||||
@ -130,7 +116,7 @@ static void acpiphp_put_context(struct acpiphp_context *context)
|
|||||||
return;
|
return;
|
||||||
|
|
||||||
WARN_ON(context->bridge);
|
WARN_ON(context->bridge);
|
||||||
acpi_detach_data(context->handle, acpiphp_context_handler);
|
context->hp.self->hp = NULL;
|
||||||
kfree(context);
|
kfree(context);
|
||||||
}
|
}
|
||||||
|
|
||||||
@ -151,7 +137,7 @@ static void free_bridge(struct kref *kref)
|
|||||||
struct acpiphp_slot *slot, *next;
|
struct acpiphp_slot *slot, *next;
|
||||||
struct acpiphp_func *func, *tmp;
|
struct acpiphp_func *func, *tmp;
|
||||||
|
|
||||||
mutex_lock(&acpiphp_context_lock);
|
acpi_lock_hp_context();
|
||||||
|
|
||||||
bridge = container_of(kref, struct acpiphp_bridge, ref);
|
bridge = container_of(kref, struct acpiphp_bridge, ref);
|
||||||
|
|
||||||
@ -175,7 +161,7 @@ static void free_bridge(struct kref *kref)
|
|||||||
pci_dev_put(bridge->pci_dev);
|
pci_dev_put(bridge->pci_dev);
|
||||||
kfree(bridge);
|
kfree(bridge);
|
||||||
|
|
||||||
mutex_unlock(&acpiphp_context_lock);
|
acpi_unlock_hp_context();
|
||||||
}
|
}
|
||||||
|
|
||||||
/*
|
/*
|
||||||
@ -212,22 +198,13 @@ static void post_dock_fixups(acpi_handle not_used, u32 event, void *data)
|
|||||||
|
|
||||||
static void dock_event(acpi_handle handle, u32 type, void *data)
|
static void dock_event(acpi_handle handle, u32 type, void *data)
|
||||||
{
|
{
|
||||||
struct acpiphp_context *context;
|
struct acpi_device *adev;
|
||||||
|
|
||||||
mutex_lock(&acpiphp_context_lock);
|
adev = acpi_bus_get_acpi_device(handle);
|
||||||
context = acpiphp_get_context(handle);
|
if (adev) {
|
||||||
if (!context || WARN_ON(context->handle != handle)
|
acpiphp_hotplug_event(adev, type);
|
||||||
|| context->func.parent->is_going_away) {
|
acpi_bus_put_acpi_device(adev);
|
||||||
mutex_unlock(&acpiphp_context_lock);
|
|
||||||
return;
|
|
||||||
}
|
}
|
||||||
get_bridge(context->func.parent);
|
|
||||||
acpiphp_put_context(context);
|
|
||||||
mutex_unlock(&acpiphp_context_lock);
|
|
||||||
|
|
||||||
hotplug_event(handle, type, data);
|
|
||||||
|
|
||||||
put_bridge(context->func.parent);
|
|
||||||
}
|
}
|
||||||
|
|
||||||
static const struct acpi_dock_ops acpiphp_dock_ops = {
|
static const struct acpi_dock_ops acpiphp_dock_ops = {
|
||||||
@ -278,12 +255,19 @@ static void acpiphp_dock_release(void *data)
|
|||||||
put_bridge(context->func.parent);
|
put_bridge(context->func.parent);
|
||||||
}
|
}
|
||||||
|
|
||||||
/* callback routine to register each ACPI PCI slot object */
|
/**
|
||||||
static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data,
|
* acpiphp_add_context - Add ACPIPHP context to an ACPI device object.
|
||||||
void **rv)
|
* @handle: ACPI handle of the object to add a context to.
|
||||||
|
* @lvl: Not used.
|
||||||
|
* @data: The object's parent ACPIPHP bridge.
|
||||||
|
* @rv: Not used.
|
||||||
|
*/
|
||||||
|
static acpi_status acpiphp_add_context(acpi_handle handle, u32 lvl, void *data,
|
||||||
|
void **rv)
|
||||||
{
|
{
|
||||||
struct acpiphp_bridge *bridge = data;
|
struct acpiphp_bridge *bridge = data;
|
||||||
struct acpiphp_context *context;
|
struct acpiphp_context *context;
|
||||||
|
struct acpi_device *adev;
|
||||||
struct acpiphp_slot *slot;
|
struct acpiphp_slot *slot;
|
||||||
struct acpiphp_func *newfunc;
|
struct acpiphp_func *newfunc;
|
||||||
acpi_status status = AE_OK;
|
acpi_status status = AE_OK;
|
||||||
@ -293,9 +277,6 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data,
|
|||||||
struct pci_dev *pdev = bridge->pci_dev;
|
struct pci_dev *pdev = bridge->pci_dev;
|
||||||
u32 val;
|
u32 val;
|
||||||
|
|
||||||
if (pdev && device_is_managed_by_native_pciehp(pdev))
|
|
||||||
return AE_OK;
|
|
||||||
|
|
||||||
status = acpi_evaluate_integer(handle, "_ADR", NULL, &adr);
|
status = acpi_evaluate_integer(handle, "_ADR", NULL, &adr);
|
||||||
if (ACPI_FAILURE(status)) {
|
if (ACPI_FAILURE(status)) {
|
||||||
if (status != AE_NOT_FOUND)
|
if (status != AE_NOT_FOUND)
|
||||||
@ -303,21 +284,22 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data,
|
|||||||
"can't evaluate _ADR (%#x)\n", status);
|
"can't evaluate _ADR (%#x)\n", status);
|
||||||
return AE_OK;
|
return AE_OK;
|
||||||
}
|
}
|
||||||
|
if (acpi_bus_get_device(handle, &adev))
|
||||||
|
return AE_OK;
|
||||||
|
|
||||||
device = (adr >> 16) & 0xffff;
|
device = (adr >> 16) & 0xffff;
|
||||||
function = adr & 0xffff;
|
function = adr & 0xffff;
|
||||||
|
|
||||||
mutex_lock(&acpiphp_context_lock);
|
acpi_lock_hp_context();
|
||||||
context = acpiphp_init_context(handle);
|
context = acpiphp_init_context(adev);
|
||||||
if (!context) {
|
if (!context) {
|
||||||
mutex_unlock(&acpiphp_context_lock);
|
acpi_unlock_hp_context();
|
||||||
acpi_handle_err(handle, "No hotplug context\n");
|
acpi_handle_err(handle, "No hotplug context\n");
|
||||||
return AE_NOT_EXIST;
|
return AE_NOT_EXIST;
|
||||||
}
|
}
|
||||||
newfunc = &context->func;
|
newfunc = &context->func;
|
||||||
newfunc->function = function;
|
newfunc->function = function;
|
||||||
newfunc->parent = bridge;
|
newfunc->parent = bridge;
|
||||||
mutex_unlock(&acpiphp_context_lock);
|
|
||||||
|
|
||||||
if (acpi_has_method(handle, "_EJ0"))
|
if (acpi_has_method(handle, "_EJ0"))
|
||||||
newfunc->flags = FUNC_HAS_EJ0;
|
newfunc->flags = FUNC_HAS_EJ0;
|
||||||
@ -325,8 +307,14 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data,
|
|||||||
if (acpi_has_method(handle, "_STA"))
|
if (acpi_has_method(handle, "_STA"))
|
||||||
newfunc->flags |= FUNC_HAS_STA;
|
newfunc->flags |= FUNC_HAS_STA;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Dock stations' notify handler should be used for dock devices instead
|
||||||
|
* of the common one, so clear hp.event in their contexts.
|
||||||
|
*/
|
||||||
if (acpi_has_method(handle, "_DCK"))
|
if (acpi_has_method(handle, "_DCK"))
|
||||||
newfunc->flags |= FUNC_HAS_DCK;
|
context->hp.event = NULL;
|
||||||
|
|
||||||
|
acpi_unlock_hp_context();
|
||||||
|
|
||||||
/* search for objects that share the same slot */
|
/* search for objects that share the same slot */
|
||||||
list_for_each_entry(slot, &bridge->slots, node)
|
list_for_each_entry(slot, &bridge->slots, node)
|
||||||
@ -335,19 +323,26 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data,
|
|||||||
|
|
||||||
slot = kzalloc(sizeof(struct acpiphp_slot), GFP_KERNEL);
|
slot = kzalloc(sizeof(struct acpiphp_slot), GFP_KERNEL);
|
||||||
if (!slot) {
|
if (!slot) {
|
||||||
status = AE_NO_MEMORY;
|
acpi_lock_hp_context();
|
||||||
goto err;
|
acpiphp_put_context(context);
|
||||||
|
acpi_unlock_hp_context();
|
||||||
|
return AE_NO_MEMORY;
|
||||||
}
|
}
|
||||||
|
|
||||||
slot->bus = bridge->pci_bus;
|
slot->bus = bridge->pci_bus;
|
||||||
slot->device = device;
|
slot->device = device;
|
||||||
INIT_LIST_HEAD(&slot->funcs);
|
INIT_LIST_HEAD(&slot->funcs);
|
||||||
mutex_init(&slot->crit_sect);
|
|
||||||
|
|
||||||
list_add_tail(&slot->node, &bridge->slots);
|
list_add_tail(&slot->node, &bridge->slots);
|
||||||
|
|
||||||
/* Register slots for ejectable functions only. */
|
/*
|
||||||
if (acpi_pci_check_ejectable(pbus, handle) || is_dock_device(handle)) {
|
* Expose slots to user space for functions that have _EJ0 or _RMV or
|
||||||
|
* are located in dock stations. Do not expose them for devices handled
|
||||||
|
* by the native PCIe hotplug (PCIeHP), becuase that code is supposed to
|
||||||
|
* expose slots to user space in those cases.
|
||||||
|
*/
|
||||||
|
if ((acpi_pci_check_ejectable(pbus, handle) || is_dock_device(handle))
|
||||||
|
&& !(pdev && device_is_managed_by_native_pciehp(pdev))) {
|
||||||
unsigned long long sun;
|
unsigned long long sun;
|
||||||
int retval;
|
int retval;
|
||||||
|
|
||||||
@ -393,32 +388,16 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data,
|
|||||||
pr_debug("failed to register dock device\n");
|
pr_debug("failed to register dock device\n");
|
||||||
}
|
}
|
||||||
|
|
||||||
/* install notify handler */
|
|
||||||
if (!(newfunc->flags & FUNC_HAS_DCK)) {
|
|
||||||
status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
|
|
||||||
handle_hotplug_event,
|
|
||||||
context);
|
|
||||||
if (ACPI_FAILURE(status))
|
|
||||||
acpi_handle_err(handle,
|
|
||||||
"failed to install notify handler\n");
|
|
||||||
}
|
|
||||||
|
|
||||||
return AE_OK;
|
return AE_OK;
|
||||||
|
|
||||||
err:
|
|
||||||
mutex_lock(&acpiphp_context_lock);
|
|
||||||
acpiphp_put_context(context);
|
|
||||||
mutex_unlock(&acpiphp_context_lock);
|
|
||||||
return status;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
static struct acpiphp_bridge *acpiphp_handle_to_bridge(acpi_handle handle)
|
static struct acpiphp_bridge *acpiphp_dev_to_bridge(struct acpi_device *adev)
|
||||||
{
|
{
|
||||||
struct acpiphp_context *context;
|
struct acpiphp_context *context;
|
||||||
struct acpiphp_bridge *bridge = NULL;
|
struct acpiphp_bridge *bridge = NULL;
|
||||||
|
|
||||||
mutex_lock(&acpiphp_context_lock);
|
acpi_lock_hp_context();
|
||||||
context = acpiphp_get_context(handle);
|
context = acpiphp_get_context(adev);
|
||||||
if (context) {
|
if (context) {
|
||||||
bridge = context->bridge;
|
bridge = context->bridge;
|
||||||
if (bridge)
|
if (bridge)
|
||||||
@ -426,7 +405,7 @@ static struct acpiphp_bridge *acpiphp_handle_to_bridge(acpi_handle handle)
|
|||||||
|
|
||||||
acpiphp_put_context(context);
|
acpiphp_put_context(context);
|
||||||
}
|
}
|
||||||
mutex_unlock(&acpiphp_context_lock);
|
acpi_unlock_hp_context();
|
||||||
return bridge;
|
return bridge;
|
||||||
}
|
}
|
||||||
|
|
||||||
@ -434,22 +413,17 @@ static void cleanup_bridge(struct acpiphp_bridge *bridge)
|
|||||||
{
|
{
|
||||||
struct acpiphp_slot *slot;
|
struct acpiphp_slot *slot;
|
||||||
struct acpiphp_func *func;
|
struct acpiphp_func *func;
|
||||||
acpi_status status;
|
|
||||||
|
|
||||||
list_for_each_entry(slot, &bridge->slots, node) {
|
list_for_each_entry(slot, &bridge->slots, node) {
|
||||||
list_for_each_entry(func, &slot->funcs, sibling) {
|
list_for_each_entry(func, &slot->funcs, sibling) {
|
||||||
acpi_handle handle = func_to_handle(func);
|
struct acpi_device *adev = func_to_acpi_device(func);
|
||||||
|
|
||||||
if (is_dock_device(handle))
|
if (is_dock_device(adev->handle))
|
||||||
unregister_hotplug_dock_device(handle);
|
unregister_hotplug_dock_device(adev->handle);
|
||||||
|
|
||||||
if (!(func->flags & FUNC_HAS_DCK)) {
|
acpi_lock_hp_context();
|
||||||
status = acpi_remove_notify_handler(handle,
|
adev->hp->event = NULL;
|
||||||
ACPI_SYSTEM_NOTIFY,
|
acpi_unlock_hp_context();
|
||||||
handle_hotplug_event);
|
|
||||||
if (ACPI_FAILURE(status))
|
|
||||||
pr_err("failed to remove notify handler\n");
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
slot->flags |= SLOT_IS_GOING_AWAY;
|
slot->flags |= SLOT_IS_GOING_AWAY;
|
||||||
if (slot->slot)
|
if (slot->slot)
|
||||||
@ -460,9 +434,9 @@ static void cleanup_bridge(struct acpiphp_bridge *bridge)
|
|||||||
list_del(&bridge->list);
|
list_del(&bridge->list);
|
||||||
mutex_unlock(&bridge_mutex);
|
mutex_unlock(&bridge_mutex);
|
||||||
|
|
||||||
mutex_lock(&acpiphp_context_lock);
|
acpi_lock_hp_context();
|
||||||
bridge->is_going_away = true;
|
bridge->is_going_away = true;
|
||||||
mutex_unlock(&acpiphp_context_lock);
|
acpi_unlock_hp_context();
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
@ -492,33 +466,6 @@ static unsigned char acpiphp_max_busnr(struct pci_bus *bus)
|
|||||||
return max;
|
return max;
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
|
||||||
* acpiphp_bus_trim - Trim device objects in an ACPI namespace subtree.
|
|
||||||
* @handle: ACPI device object handle to start from.
|
|
||||||
*/
|
|
||||||
static void acpiphp_bus_trim(acpi_handle handle)
|
|
||||||
{
|
|
||||||
struct acpi_device *adev = NULL;
|
|
||||||
|
|
||||||
acpi_bus_get_device(handle, &adev);
|
|
||||||
if (adev)
|
|
||||||
acpi_bus_trim(adev);
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* acpiphp_bus_add - Scan ACPI namespace subtree.
|
|
||||||
* @handle: ACPI object handle to start the scan from.
|
|
||||||
*/
|
|
||||||
static void acpiphp_bus_add(acpi_handle handle)
|
|
||||||
{
|
|
||||||
struct acpi_device *adev = NULL;
|
|
||||||
|
|
||||||
acpi_bus_scan(handle);
|
|
||||||
acpi_bus_get_device(handle, &adev);
|
|
||||||
if (acpi_device_enumerated(adev))
|
|
||||||
acpi_device_set_power(adev, ACPI_STATE_D0);
|
|
||||||
}
|
|
||||||
|
|
||||||
static void acpiphp_set_acpi_region(struct acpiphp_slot *slot)
|
static void acpiphp_set_acpi_region(struct acpiphp_slot *slot)
|
||||||
{
|
{
|
||||||
struct acpiphp_func *func;
|
struct acpiphp_func *func;
|
||||||
@ -558,9 +505,13 @@ static int acpiphp_rescan_slot(struct acpiphp_slot *slot)
|
|||||||
{
|
{
|
||||||
struct acpiphp_func *func;
|
struct acpiphp_func *func;
|
||||||
|
|
||||||
list_for_each_entry(func, &slot->funcs, sibling)
|
list_for_each_entry(func, &slot->funcs, sibling) {
|
||||||
acpiphp_bus_add(func_to_handle(func));
|
struct acpi_device *adev = func_to_acpi_device(func);
|
||||||
|
|
||||||
|
acpi_bus_scan(adev->handle);
|
||||||
|
if (acpi_device_enumerated(adev))
|
||||||
|
acpi_device_set_power(adev, ACPI_STATE_D0);
|
||||||
|
}
|
||||||
return pci_scan_slot(slot->bus, PCI_DEVFN(slot->device, 0));
|
return pci_scan_slot(slot->bus, PCI_DEVFN(slot->device, 0));
|
||||||
}
|
}
|
||||||
|
|
||||||
@ -625,32 +576,15 @@ static void __ref enable_slot(struct acpiphp_slot *slot)
|
|||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
/* return first device in slot, acquiring a reference on it */
|
|
||||||
static struct pci_dev *dev_in_slot(struct acpiphp_slot *slot)
|
|
||||||
{
|
|
||||||
struct pci_bus *bus = slot->bus;
|
|
||||||
struct pci_dev *dev;
|
|
||||||
struct pci_dev *ret = NULL;
|
|
||||||
|
|
||||||
down_read(&pci_bus_sem);
|
|
||||||
list_for_each_entry(dev, &bus->devices, bus_list)
|
|
||||||
if (PCI_SLOT(dev->devfn) == slot->device) {
|
|
||||||
ret = pci_dev_get(dev);
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
up_read(&pci_bus_sem);
|
|
||||||
|
|
||||||
return ret;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* disable_slot - disable a slot
|
* disable_slot - disable a slot
|
||||||
* @slot: ACPI PHP slot
|
* @slot: ACPI PHP slot
|
||||||
*/
|
*/
|
||||||
static void disable_slot(struct acpiphp_slot *slot)
|
static void disable_slot(struct acpiphp_slot *slot)
|
||||||
{
|
{
|
||||||
|
struct pci_bus *bus = slot->bus;
|
||||||
|
struct pci_dev *dev, *prev;
|
||||||
struct acpiphp_func *func;
|
struct acpiphp_func *func;
|
||||||
struct pci_dev *pdev;
|
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* enable_slot() enumerates all functions in this device via
|
* enable_slot() enumerates all functions in this device via
|
||||||
@ -658,22 +592,18 @@ static void disable_slot(struct acpiphp_slot *slot)
|
|||||||
* methods (_EJ0, etc.) or not. Therefore, we remove all functions
|
* methods (_EJ0, etc.) or not. Therefore, we remove all functions
|
||||||
* here.
|
* here.
|
||||||
*/
|
*/
|
||||||
while ((pdev = dev_in_slot(slot))) {
|
list_for_each_entry_safe_reverse(dev, prev, &bus->devices, bus_list)
|
||||||
pci_stop_and_remove_bus_device(pdev);
|
if (PCI_SLOT(dev->devfn) == slot->device)
|
||||||
pci_dev_put(pdev);
|
pci_stop_and_remove_bus_device(dev);
|
||||||
}
|
|
||||||
|
|
||||||
list_for_each_entry(func, &slot->funcs, sibling)
|
list_for_each_entry(func, &slot->funcs, sibling)
|
||||||
acpiphp_bus_trim(func_to_handle(func));
|
acpi_bus_trim(func_to_acpi_device(func));
|
||||||
|
|
||||||
slot->flags &= (~SLOT_ENABLED);
|
slot->flags &= (~SLOT_ENABLED);
|
||||||
}
|
}
|
||||||
|
|
||||||
static bool acpiphp_no_hotplug(acpi_handle handle)
|
static bool acpiphp_no_hotplug(struct acpi_device *adev)
|
||||||
{
|
{
|
||||||
struct acpi_device *adev = NULL;
|
|
||||||
|
|
||||||
acpi_bus_get_device(handle, &adev);
|
|
||||||
return adev && adev->flags.no_hotplug;
|
return adev && adev->flags.no_hotplug;
|
||||||
}
|
}
|
||||||
|
|
||||||
@ -682,7 +612,7 @@ static bool slot_no_hotplug(struct acpiphp_slot *slot)
|
|||||||
struct acpiphp_func *func;
|
struct acpiphp_func *func;
|
||||||
|
|
||||||
list_for_each_entry(func, &slot->funcs, sibling)
|
list_for_each_entry(func, &slot->funcs, sibling)
|
||||||
if (acpiphp_no_hotplug(func_to_handle(func)))
|
if (acpiphp_no_hotplug(func_to_acpi_device(func)))
|
||||||
return true;
|
return true;
|
||||||
|
|
||||||
return false;
|
return false;
|
||||||
@ -747,28 +677,25 @@ static inline bool device_status_valid(unsigned int sta)
|
|||||||
*/
|
*/
|
||||||
static void trim_stale_devices(struct pci_dev *dev)
|
static void trim_stale_devices(struct pci_dev *dev)
|
||||||
{
|
{
|
||||||
acpi_handle handle = ACPI_HANDLE(&dev->dev);
|
struct acpi_device *adev = ACPI_COMPANION(&dev->dev);
|
||||||
struct pci_bus *bus = dev->subordinate;
|
struct pci_bus *bus = dev->subordinate;
|
||||||
bool alive = false;
|
bool alive = false;
|
||||||
|
|
||||||
if (handle) {
|
if (adev) {
|
||||||
acpi_status status;
|
acpi_status status;
|
||||||
unsigned long long sta;
|
unsigned long long sta;
|
||||||
|
|
||||||
status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
|
status = acpi_evaluate_integer(adev->handle, "_STA", NULL, &sta);
|
||||||
alive = (ACPI_SUCCESS(status) && device_status_valid(sta))
|
alive = (ACPI_SUCCESS(status) && device_status_valid(sta))
|
||||||
|| acpiphp_no_hotplug(handle);
|
|| acpiphp_no_hotplug(adev);
|
||||||
}
|
}
|
||||||
if (!alive) {
|
if (!alive)
|
||||||
u32 v;
|
alive = pci_device_is_present(dev);
|
||||||
|
|
||||||
/* Check if the device responds. */
|
|
||||||
alive = pci_bus_read_dev_vendor_id(dev->bus, dev->devfn, &v, 0);
|
|
||||||
}
|
|
||||||
if (!alive) {
|
if (!alive) {
|
||||||
pci_stop_and_remove_bus_device(dev);
|
pci_stop_and_remove_bus_device(dev);
|
||||||
if (handle)
|
if (adev)
|
||||||
acpiphp_bus_trim(handle);
|
acpi_bus_trim(adev);
|
||||||
} else if (bus) {
|
} else if (bus) {
|
||||||
struct pci_dev *child, *tmp;
|
struct pci_dev *child, *tmp;
|
||||||
|
|
||||||
@ -800,7 +727,6 @@ static void acpiphp_check_bridge(struct acpiphp_bridge *bridge)
|
|||||||
struct pci_bus *bus = slot->bus;
|
struct pci_bus *bus = slot->bus;
|
||||||
struct pci_dev *dev, *tmp;
|
struct pci_dev *dev, *tmp;
|
||||||
|
|
||||||
mutex_lock(&slot->crit_sect);
|
|
||||||
if (slot_no_hotplug(slot)) {
|
if (slot_no_hotplug(slot)) {
|
||||||
; /* do nothing */
|
; /* do nothing */
|
||||||
} else if (device_status_valid(get_slot_status(slot))) {
|
} else if (device_status_valid(get_slot_status(slot))) {
|
||||||
@ -815,7 +741,6 @@ static void acpiphp_check_bridge(struct acpiphp_bridge *bridge)
|
|||||||
} else {
|
} else {
|
||||||
disable_slot(slot);
|
disable_slot(slot);
|
||||||
}
|
}
|
||||||
mutex_unlock(&slot->crit_sect);
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
@ -855,11 +780,11 @@ static void acpiphp_sanitize_bus(struct pci_bus *bus)
|
|||||||
* ACPI event handlers
|
* ACPI event handlers
|
||||||
*/
|
*/
|
||||||
|
|
||||||
void acpiphp_check_host_bridge(acpi_handle handle)
|
void acpiphp_check_host_bridge(struct acpi_device *adev)
|
||||||
{
|
{
|
||||||
struct acpiphp_bridge *bridge;
|
struct acpiphp_bridge *bridge;
|
||||||
|
|
||||||
bridge = acpiphp_handle_to_bridge(handle);
|
bridge = acpiphp_dev_to_bridge(adev);
|
||||||
if (bridge) {
|
if (bridge) {
|
||||||
pci_lock_rescan_remove();
|
pci_lock_rescan_remove();
|
||||||
|
|
||||||
@ -872,73 +797,52 @@ void acpiphp_check_host_bridge(acpi_handle handle)
|
|||||||
|
|
||||||
static int acpiphp_disable_and_eject_slot(struct acpiphp_slot *slot);
|
static int acpiphp_disable_and_eject_slot(struct acpiphp_slot *slot);
|
||||||
|
|
||||||
static void hotplug_event(acpi_handle handle, u32 type, void *data)
|
static void hotplug_event(u32 type, struct acpiphp_context *context)
|
||||||
{
|
{
|
||||||
struct acpiphp_context *context = data;
|
acpi_handle handle = context->hp.self->handle;
|
||||||
struct acpiphp_func *func = &context->func;
|
struct acpiphp_func *func = &context->func;
|
||||||
|
struct acpiphp_slot *slot = func->slot;
|
||||||
struct acpiphp_bridge *bridge;
|
struct acpiphp_bridge *bridge;
|
||||||
char objname[64];
|
|
||||||
struct acpi_buffer buffer = { .length = sizeof(objname),
|
|
||||||
.pointer = objname };
|
|
||||||
|
|
||||||
mutex_lock(&acpiphp_context_lock);
|
acpi_lock_hp_context();
|
||||||
bridge = context->bridge;
|
bridge = context->bridge;
|
||||||
if (bridge)
|
if (bridge)
|
||||||
get_bridge(bridge);
|
get_bridge(bridge);
|
||||||
|
|
||||||
mutex_unlock(&acpiphp_context_lock);
|
acpi_unlock_hp_context();
|
||||||
|
|
||||||
pci_lock_rescan_remove();
|
pci_lock_rescan_remove();
|
||||||
acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
|
|
||||||
|
|
||||||
switch (type) {
|
switch (type) {
|
||||||
case ACPI_NOTIFY_BUS_CHECK:
|
case ACPI_NOTIFY_BUS_CHECK:
|
||||||
/* bus re-enumerate */
|
/* bus re-enumerate */
|
||||||
pr_debug("%s: Bus check notify on %s\n", __func__, objname);
|
acpi_handle_debug(handle, "Bus check in %s()\n", __func__);
|
||||||
pr_debug("%s: re-enumerating slots under %s\n",
|
if (bridge)
|
||||||
__func__, objname);
|
|
||||||
if (bridge) {
|
|
||||||
acpiphp_check_bridge(bridge);
|
acpiphp_check_bridge(bridge);
|
||||||
} else {
|
else if (!(slot->flags & SLOT_IS_GOING_AWAY))
|
||||||
struct acpiphp_slot *slot = func->slot;
|
|
||||||
|
|
||||||
if (slot->flags & SLOT_IS_GOING_AWAY)
|
|
||||||
break;
|
|
||||||
|
|
||||||
mutex_lock(&slot->crit_sect);
|
|
||||||
enable_slot(slot);
|
enable_slot(slot);
|
||||||
mutex_unlock(&slot->crit_sect);
|
|
||||||
}
|
|
||||||
break;
|
break;
|
||||||
|
|
||||||
case ACPI_NOTIFY_DEVICE_CHECK:
|
case ACPI_NOTIFY_DEVICE_CHECK:
|
||||||
/* device check */
|
/* device check */
|
||||||
pr_debug("%s: Device check notify on %s\n", __func__, objname);
|
acpi_handle_debug(handle, "Device check in %s()\n", __func__);
|
||||||
if (bridge) {
|
if (bridge) {
|
||||||
acpiphp_check_bridge(bridge);
|
acpiphp_check_bridge(bridge);
|
||||||
} else {
|
} else if (!(slot->flags & SLOT_IS_GOING_AWAY)) {
|
||||||
struct acpiphp_slot *slot = func->slot;
|
|
||||||
int ret;
|
|
||||||
|
|
||||||
if (slot->flags & SLOT_IS_GOING_AWAY)
|
|
||||||
break;
|
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* Check if anything has changed in the slot and rescan
|
* Check if anything has changed in the slot and rescan
|
||||||
* from the parent if that's the case.
|
* from the parent if that's the case.
|
||||||
*/
|
*/
|
||||||
mutex_lock(&slot->crit_sect);
|
if (acpiphp_rescan_slot(slot))
|
||||||
ret = acpiphp_rescan_slot(slot);
|
|
||||||
mutex_unlock(&slot->crit_sect);
|
|
||||||
if (ret)
|
|
||||||
acpiphp_check_bridge(func->parent);
|
acpiphp_check_bridge(func->parent);
|
||||||
}
|
}
|
||||||
break;
|
break;
|
||||||
|
|
||||||
case ACPI_NOTIFY_EJECT_REQUEST:
|
case ACPI_NOTIFY_EJECT_REQUEST:
|
||||||
/* request device eject */
|
/* request device eject */
|
||||||
pr_debug("%s: Device eject notify on %s\n", __func__, objname);
|
acpi_handle_debug(handle, "Eject request in %s()\n", __func__);
|
||||||
acpiphp_disable_and_eject_slot(func->slot);
|
acpiphp_disable_and_eject_slot(slot);
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
|
|
||||||
@ -947,106 +851,48 @@ static void hotplug_event(acpi_handle handle, u32 type, void *data)
|
|||||||
put_bridge(bridge);
|
put_bridge(bridge);
|
||||||
}
|
}
|
||||||
|
|
||||||
static void hotplug_event_work(void *data, u32 type)
|
static int acpiphp_hotplug_event(struct acpi_device *adev, u32 type)
|
||||||
{
|
{
|
||||||
struct acpiphp_context *context = data;
|
struct acpiphp_context *context;
|
||||||
acpi_handle handle = context->handle;
|
|
||||||
|
|
||||||
acpi_scan_lock_acquire();
|
acpi_lock_hp_context();
|
||||||
|
context = acpiphp_get_context(adev);
|
||||||
|
if (!context || context->func.parent->is_going_away) {
|
||||||
|
acpi_unlock_hp_context();
|
||||||
|
return -ENODATA;
|
||||||
|
}
|
||||||
|
get_bridge(context->func.parent);
|
||||||
|
acpiphp_put_context(context);
|
||||||
|
acpi_unlock_hp_context();
|
||||||
|
|
||||||
hotplug_event(handle, type, context);
|
hotplug_event(type, context);
|
||||||
|
|
||||||
acpi_scan_lock_release();
|
|
||||||
acpi_evaluate_hotplug_ost(handle, type, ACPI_OST_SC_SUCCESS, NULL);
|
|
||||||
put_bridge(context->func.parent);
|
put_bridge(context->func.parent);
|
||||||
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* handle_hotplug_event - handle ACPI hotplug event
|
* acpiphp_enumerate_slots - Enumerate PCI slots for a given bus.
|
||||||
* @handle: Notify()'ed acpi_handle
|
* @bus: PCI bus to enumerate the slots for.
|
||||||
* @type: Notify code
|
|
||||||
* @data: pointer to acpiphp_context structure
|
|
||||||
*
|
*
|
||||||
* Handles ACPI event notification on slots.
|
* A "slot" is an object associated with a PCI device number. All functions
|
||||||
*/
|
* (PCI devices) with the same bus and device number belong to the same slot.
|
||||||
static void handle_hotplug_event(acpi_handle handle, u32 type, void *data)
|
|
||||||
{
|
|
||||||
struct acpiphp_context *context;
|
|
||||||
u32 ost_code = ACPI_OST_SC_SUCCESS;
|
|
||||||
acpi_status status;
|
|
||||||
|
|
||||||
switch (type) {
|
|
||||||
case ACPI_NOTIFY_BUS_CHECK:
|
|
||||||
case ACPI_NOTIFY_DEVICE_CHECK:
|
|
||||||
break;
|
|
||||||
case ACPI_NOTIFY_EJECT_REQUEST:
|
|
||||||
ost_code = ACPI_OST_SC_EJECT_IN_PROGRESS;
|
|
||||||
acpi_evaluate_hotplug_ost(handle, type, ost_code, NULL);
|
|
||||||
break;
|
|
||||||
|
|
||||||
case ACPI_NOTIFY_DEVICE_WAKE:
|
|
||||||
return;
|
|
||||||
|
|
||||||
case ACPI_NOTIFY_FREQUENCY_MISMATCH:
|
|
||||||
acpi_handle_err(handle, "Device cannot be configured due "
|
|
||||||
"to a frequency mismatch\n");
|
|
||||||
goto out;
|
|
||||||
|
|
||||||
case ACPI_NOTIFY_BUS_MODE_MISMATCH:
|
|
||||||
acpi_handle_err(handle, "Device cannot be configured due "
|
|
||||||
"to a bus mode mismatch\n");
|
|
||||||
goto out;
|
|
||||||
|
|
||||||
case ACPI_NOTIFY_POWER_FAULT:
|
|
||||||
acpi_handle_err(handle, "Device has suffered a power fault\n");
|
|
||||||
goto out;
|
|
||||||
|
|
||||||
default:
|
|
||||||
acpi_handle_warn(handle, "Unsupported event type 0x%x\n", type);
|
|
||||||
ost_code = ACPI_OST_SC_UNRECOGNIZED_NOTIFY;
|
|
||||||
goto out;
|
|
||||||
}
|
|
||||||
|
|
||||||
mutex_lock(&acpiphp_context_lock);
|
|
||||||
context = acpiphp_get_context(handle);
|
|
||||||
if (!context || WARN_ON(context->handle != handle)
|
|
||||||
|| context->func.parent->is_going_away)
|
|
||||||
goto err_out;
|
|
||||||
|
|
||||||
get_bridge(context->func.parent);
|
|
||||||
acpiphp_put_context(context);
|
|
||||||
status = acpi_hotplug_execute(hotplug_event_work, context, type);
|
|
||||||
if (ACPI_SUCCESS(status)) {
|
|
||||||
mutex_unlock(&acpiphp_context_lock);
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
put_bridge(context->func.parent);
|
|
||||||
|
|
||||||
err_out:
|
|
||||||
mutex_unlock(&acpiphp_context_lock);
|
|
||||||
ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE;
|
|
||||||
|
|
||||||
out:
|
|
||||||
acpi_evaluate_hotplug_ost(handle, type, ost_code, NULL);
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Create hotplug slots for the PCI bus.
|
|
||||||
* It should always return 0 to avoid skipping following notifiers.
|
|
||||||
*/
|
*/
|
||||||
void acpiphp_enumerate_slots(struct pci_bus *bus)
|
void acpiphp_enumerate_slots(struct pci_bus *bus)
|
||||||
{
|
{
|
||||||
struct acpiphp_bridge *bridge;
|
struct acpiphp_bridge *bridge;
|
||||||
|
struct acpi_device *adev;
|
||||||
acpi_handle handle;
|
acpi_handle handle;
|
||||||
acpi_status status;
|
acpi_status status;
|
||||||
|
|
||||||
if (acpiphp_disabled)
|
if (acpiphp_disabled)
|
||||||
return;
|
return;
|
||||||
|
|
||||||
handle = ACPI_HANDLE(bus->bridge);
|
adev = ACPI_COMPANION(bus->bridge);
|
||||||
if (!handle)
|
if (!adev)
|
||||||
return;
|
return;
|
||||||
|
|
||||||
|
handle = adev->handle;
|
||||||
bridge = kzalloc(sizeof(struct acpiphp_bridge), GFP_KERNEL);
|
bridge = kzalloc(sizeof(struct acpiphp_bridge), GFP_KERNEL);
|
||||||
if (!bridge) {
|
if (!bridge) {
|
||||||
acpi_handle_err(handle, "No memory for bridge object\n");
|
acpi_handle_err(handle, "No memory for bridge object\n");
|
||||||
@ -1074,10 +920,10 @@ void acpiphp_enumerate_slots(struct pci_bus *bus)
|
|||||||
* parent is going to be handled by pciehp, in which case this
|
* parent is going to be handled by pciehp, in which case this
|
||||||
* bridge is not interesting to us either.
|
* bridge is not interesting to us either.
|
||||||
*/
|
*/
|
||||||
mutex_lock(&acpiphp_context_lock);
|
acpi_lock_hp_context();
|
||||||
context = acpiphp_get_context(handle);
|
context = acpiphp_get_context(adev);
|
||||||
if (!context) {
|
if (!context) {
|
||||||
mutex_unlock(&acpiphp_context_lock);
|
acpi_unlock_hp_context();
|
||||||
put_device(&bus->dev);
|
put_device(&bus->dev);
|
||||||
pci_dev_put(bridge->pci_dev);
|
pci_dev_put(bridge->pci_dev);
|
||||||
kfree(bridge);
|
kfree(bridge);
|
||||||
@ -1087,17 +933,17 @@ void acpiphp_enumerate_slots(struct pci_bus *bus)
|
|||||||
context->bridge = bridge;
|
context->bridge = bridge;
|
||||||
/* Get a reference to the parent bridge. */
|
/* Get a reference to the parent bridge. */
|
||||||
get_bridge(context->func.parent);
|
get_bridge(context->func.parent);
|
||||||
mutex_unlock(&acpiphp_context_lock);
|
acpi_unlock_hp_context();
|
||||||
}
|
}
|
||||||
|
|
||||||
/* must be added to the list prior to calling register_slot */
|
/* Must be added to the list prior to calling acpiphp_add_context(). */
|
||||||
mutex_lock(&bridge_mutex);
|
mutex_lock(&bridge_mutex);
|
||||||
list_add(&bridge->list, &bridge_list);
|
list_add(&bridge->list, &bridge_list);
|
||||||
mutex_unlock(&bridge_mutex);
|
mutex_unlock(&bridge_mutex);
|
||||||
|
|
||||||
/* register all slot objects under this bridge */
|
/* register all slot objects under this bridge */
|
||||||
status = acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, 1,
|
status = acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, 1,
|
||||||
register_slot, NULL, bridge, NULL);
|
acpiphp_add_context, NULL, bridge, NULL);
|
||||||
if (ACPI_FAILURE(status)) {
|
if (ACPI_FAILURE(status)) {
|
||||||
acpi_handle_err(handle, "failed to register slots\n");
|
acpi_handle_err(handle, "failed to register slots\n");
|
||||||
cleanup_bridge(bridge);
|
cleanup_bridge(bridge);
|
||||||
@ -1105,7 +951,10 @@ void acpiphp_enumerate_slots(struct pci_bus *bus)
|
|||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
/* Destroy hotplug slots associated with the PCI bus */
|
/**
|
||||||
|
* acpiphp_remove_slots - Remove slot objects associated with a given bus.
|
||||||
|
* @bus: PCI bus to remove the slot objects for.
|
||||||
|
*/
|
||||||
void acpiphp_remove_slots(struct pci_bus *bus)
|
void acpiphp_remove_slots(struct pci_bus *bus)
|
||||||
{
|
{
|
||||||
struct acpiphp_bridge *bridge;
|
struct acpiphp_bridge *bridge;
|
||||||
@ -1136,13 +985,10 @@ int acpiphp_enable_slot(struct acpiphp_slot *slot)
|
|||||||
if (slot->flags & SLOT_IS_GOING_AWAY)
|
if (slot->flags & SLOT_IS_GOING_AWAY)
|
||||||
return -ENODEV;
|
return -ENODEV;
|
||||||
|
|
||||||
mutex_lock(&slot->crit_sect);
|
|
||||||
/* configure all functions */
|
/* configure all functions */
|
||||||
if (!(slot->flags & SLOT_ENABLED))
|
if (!(slot->flags & SLOT_ENABLED))
|
||||||
enable_slot(slot);
|
enable_slot(slot);
|
||||||
|
|
||||||
mutex_unlock(&slot->crit_sect);
|
|
||||||
|
|
||||||
pci_unlock_rescan_remove();
|
pci_unlock_rescan_remove();
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
@ -1158,8 +1004,6 @@ static int acpiphp_disable_and_eject_slot(struct acpiphp_slot *slot)
|
|||||||
if (slot->flags & SLOT_IS_GOING_AWAY)
|
if (slot->flags & SLOT_IS_GOING_AWAY)
|
||||||
return -ENODEV;
|
return -ENODEV;
|
||||||
|
|
||||||
mutex_lock(&slot->crit_sect);
|
|
||||||
|
|
||||||
/* unconfigure all functions */
|
/* unconfigure all functions */
|
||||||
disable_slot(slot);
|
disable_slot(slot);
|
||||||
|
|
||||||
@ -1173,7 +1017,6 @@ static int acpiphp_disable_and_eject_slot(struct acpiphp_slot *slot)
|
|||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
|
|
||||||
mutex_unlock(&slot->crit_sect);
|
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
@ -1181,9 +1024,15 @@ int acpiphp_disable_slot(struct acpiphp_slot *slot)
|
|||||||
{
|
{
|
||||||
int ret;
|
int ret;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Acquire acpi_scan_lock to ensure that the execution of _EJ0 in
|
||||||
|
* acpiphp_disable_and_eject_slot() will be synchronized properly.
|
||||||
|
*/
|
||||||
|
acpi_scan_lock_acquire();
|
||||||
pci_lock_rescan_remove();
|
pci_lock_rescan_remove();
|
||||||
ret = acpiphp_disable_and_eject_slot(slot);
|
ret = acpiphp_disable_and_eject_slot(slot);
|
||||||
pci_unlock_rescan_remove();
|
pci_unlock_rescan_remove();
|
||||||
|
acpi_scan_lock_release();
|
||||||
return ret;
|
return ret;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -136,6 +136,16 @@ struct acpi_scan_handler {
|
|||||||
struct acpi_hotplug_profile hotplug;
|
struct acpi_hotplug_profile hotplug;
|
||||||
};
|
};
|
||||||
|
|
||||||
|
/*
|
||||||
|
* ACPI Hotplug Context
|
||||||
|
* --------------------
|
||||||
|
*/
|
||||||
|
|
||||||
|
struct acpi_hotplug_context {
|
||||||
|
struct acpi_device *self;
|
||||||
|
int (*event)(struct acpi_device *, u32);
|
||||||
|
};
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* ACPI Driver
|
* ACPI Driver
|
||||||
* -----------
|
* -----------
|
||||||
@ -190,7 +200,8 @@ struct acpi_device_flags {
|
|||||||
u32 initialized:1;
|
u32 initialized:1;
|
||||||
u32 visited:1;
|
u32 visited:1;
|
||||||
u32 no_hotplug:1;
|
u32 no_hotplug:1;
|
||||||
u32 reserved:24;
|
u32 hotplug_notify:1;
|
||||||
|
u32 reserved:23;
|
||||||
};
|
};
|
||||||
|
|
||||||
/* File System */
|
/* File System */
|
||||||
@ -329,6 +340,7 @@ struct acpi_device {
|
|||||||
struct acpi_device_perf performance;
|
struct acpi_device_perf performance;
|
||||||
struct acpi_device_dir dir;
|
struct acpi_device_dir dir;
|
||||||
struct acpi_scan_handler *handler;
|
struct acpi_scan_handler *handler;
|
||||||
|
struct acpi_hotplug_context *hp;
|
||||||
struct acpi_driver *driver;
|
struct acpi_driver *driver;
|
||||||
void *driver_data;
|
void *driver_data;
|
||||||
struct device dev;
|
struct device dev;
|
||||||
@ -351,6 +363,15 @@ static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta)
|
|||||||
*((u32 *)&adev->status) = sta;
|
*((u32 *)&adev->status) = sta;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
static inline void acpi_set_hp_context(struct acpi_device *adev,
|
||||||
|
struct acpi_hotplug_context *hp,
|
||||||
|
int (*event)(struct acpi_device *, u32))
|
||||||
|
{
|
||||||
|
hp->self = adev;
|
||||||
|
hp->event = event;
|
||||||
|
adev->hp = hp;
|
||||||
|
}
|
||||||
|
|
||||||
/* acpi_device.dev.bus == &acpi_bus_type */
|
/* acpi_device.dev.bus == &acpi_bus_type */
|
||||||
extern struct bus_type acpi_bus_type;
|
extern struct bus_type acpi_bus_type;
|
||||||
|
|
||||||
@ -381,6 +402,8 @@ extern int unregister_acpi_notifier(struct notifier_block *);
|
|||||||
*/
|
*/
|
||||||
|
|
||||||
int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
|
int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
|
||||||
|
struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle);
|
||||||
|
void acpi_bus_put_acpi_device(struct acpi_device *adev);
|
||||||
acpi_status acpi_bus_get_status_handle(acpi_handle handle,
|
acpi_status acpi_bus_get_status_handle(acpi_handle handle,
|
||||||
unsigned long long *sta);
|
unsigned long long *sta);
|
||||||
int acpi_bus_get_status(struct acpi_device *device);
|
int acpi_bus_get_status(struct acpi_device *device);
|
||||||
@ -402,6 +425,8 @@ static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; }
|
|||||||
|
|
||||||
void acpi_scan_lock_acquire(void);
|
void acpi_scan_lock_acquire(void);
|
||||||
void acpi_scan_lock_release(void);
|
void acpi_scan_lock_release(void);
|
||||||
|
void acpi_lock_hp_context(void);
|
||||||
|
void acpi_unlock_hp_context(void);
|
||||||
int acpi_scan_add_handler(struct acpi_scan_handler *handler);
|
int acpi_scan_add_handler(struct acpi_scan_handler *handler);
|
||||||
int acpi_bus_register_driver(struct acpi_driver *driver);
|
int acpi_bus_register_driver(struct acpi_driver *driver);
|
||||||
void acpi_bus_unregister_driver(struct acpi_driver *driver);
|
void acpi_bus_unregister_driver(struct acpi_driver *driver);
|
||||||
|
@ -229,6 +229,10 @@ acpi_attach_data(acpi_handle object, acpi_object_handler handler, void *data);
|
|||||||
|
|
||||||
acpi_status acpi_detach_data(acpi_handle object, acpi_object_handler handler);
|
acpi_status acpi_detach_data(acpi_handle object, acpi_object_handler handler);
|
||||||
|
|
||||||
|
acpi_status
|
||||||
|
acpi_get_data_full(acpi_handle object, acpi_object_handler handler, void **data,
|
||||||
|
void (*callback)(void *));
|
||||||
|
|
||||||
acpi_status
|
acpi_status
|
||||||
acpi_get_data(acpi_handle object, acpi_object_handler handler, void **data);
|
acpi_get_data(acpi_handle object, acpi_object_handler handler, void **data);
|
||||||
|
|
||||||
|
@ -59,12 +59,12 @@ static inline void acpi_pci_slot_remove(struct pci_bus *bus) { }
|
|||||||
void acpiphp_init(void);
|
void acpiphp_init(void);
|
||||||
void acpiphp_enumerate_slots(struct pci_bus *bus);
|
void acpiphp_enumerate_slots(struct pci_bus *bus);
|
||||||
void acpiphp_remove_slots(struct pci_bus *bus);
|
void acpiphp_remove_slots(struct pci_bus *bus);
|
||||||
void acpiphp_check_host_bridge(acpi_handle handle);
|
void acpiphp_check_host_bridge(struct acpi_device *adev);
|
||||||
#else
|
#else
|
||||||
static inline void acpiphp_init(void) { }
|
static inline void acpiphp_init(void) { }
|
||||||
static inline void acpiphp_enumerate_slots(struct pci_bus *bus) { }
|
static inline void acpiphp_enumerate_slots(struct pci_bus *bus) { }
|
||||||
static inline void acpiphp_remove_slots(struct pci_bus *bus) { }
|
static inline void acpiphp_remove_slots(struct pci_bus *bus) { }
|
||||||
static inline void acpiphp_check_host_bridge(acpi_handle handle) { }
|
static inline void acpiphp_check_host_bridge(struct acpi_device *adev) { }
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
#else /* CONFIG_ACPI */
|
#else /* CONFIG_ACPI */
|
||||||
|
Loading…
Reference in New Issue
Block a user