return NULL;
}
-static int __devinit is_valid_resource(struct pci_dev *dev, int idx)
+ int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge)
+ {
+ struct pci_controller *controller = bridge->bus->sysdata;
+
+ ACPI_HANDLE_SET(&bridge->dev, controller->acpi_handle);
+ return 0;
+ }
+
+static int is_valid_resource(struct pci_dev *dev, int idx)
{
unsigned int i, type_mask = IORESOURCE_IO | IORESOURCE_MEM;
struct resource *devr = &dev->resource[idx], *busr;
int init_acpi_device_notify(void);
int acpi_scan_init(void);
++#ifdef CONFIG_ACPI_PCI_SLOT
++void acpi_pci_slot_init(void);
++#else
++static inline void acpi_pci_slot_init(void) { }
++#endif
+void acpi_pci_root_init(void);
+void acpi_pci_link_init(void);
++void acpi_pci_root_hp_init(void);
+void acpi_platform_init(void);
int acpi_sysfs_init(void);
+void acpi_csrt_init(void);
+#ifdef CONFIG_ACPI_CONTAINER
+void acpi_container_init(void);
+#else
+static inline void acpi_container_init(void) {}
+#endif
#ifdef CONFIG_DEBUG_FS
extern struct dentry *acpi_debugfs_dir;
return result;
}
-static int acpi_pci_root_remove(struct acpi_device *device, int type)
+static void acpi_pci_root_remove(struct acpi_device *device)
{
- acpi_status status;
- acpi_handle handle;
struct acpi_pci_root *root = acpi_driver_data(device);
struct acpi_pci_driver *driver;
{
acpi_hest_init();
- if (acpi_pci_disabled)
- return 0;
-
- pci_acpi_crs_quirks();
- if (acpi_bus_register_driver(&acpi_pci_root_driver) < 0)
- return -ENODEV;
-
- return 0;
+ if (!acpi_pci_disabled) {
+ pci_acpi_crs_quirks();
+ acpi_scan_add_handler(&pci_root_handler);
+ }
}
+ /* Support root bridge hotplug */
+
+ static void handle_root_bridge_insertion(acpi_handle handle)
+ {
+ struct acpi_device *device;
+
+ if (!acpi_bus_get_device(handle, &device)) {
+ printk(KERN_DEBUG "acpi device exists...\n");
+ return;
+ }
+
+ if (acpi_bus_scan(handle))
+ printk(KERN_ERR "cannot add bridge to acpi list\n");
+ }
+
+ static void handle_root_bridge_removal(struct acpi_device *device)
+ {
+ struct acpi_eject_event *ej_event;
+
+ ej_event = kmalloc(sizeof(*ej_event), GFP_KERNEL);
+ if (!ej_event) {
+ /* Inform firmware the hot-remove operation has error */
+ (void) acpi_evaluate_hotplug_ost(device->handle,
+ ACPI_NOTIFY_EJECT_REQUEST,
+ ACPI_OST_SC_NON_SPECIFIC_FAILURE,
+ NULL);
+ return;
+ }
+
+ ej_event->device = device;
+ ej_event->event = ACPI_NOTIFY_EJECT_REQUEST;
+
+ acpi_bus_hot_remove_device(ej_event);
+ }
+
+ static void _handle_hotplug_event_root(struct work_struct *work)
+ {
+ struct acpi_pci_root *root;
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER };
+ struct acpi_hp_work *hp_work;
+ acpi_handle handle;
+ u32 type;
+
+ hp_work = container_of(work, struct acpi_hp_work, work);
+ handle = hp_work->handle;
+ type = hp_work->type;
+
+ root = acpi_pci_find_root(handle);
+
+ acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
+
+ switch (type) {
+ case ACPI_NOTIFY_BUS_CHECK:
+ /* bus enumerate */
+ printk(KERN_DEBUG "%s: Bus check notify on %s\n", __func__,
+ (char *)buffer.pointer);
+ if (!root)
+ handle_root_bridge_insertion(handle);
+
+ break;
+
+ case ACPI_NOTIFY_DEVICE_CHECK:
+ /* device check */
+ printk(KERN_DEBUG "%s: Device check notify on %s\n", __func__,
+ (char *)buffer.pointer);
+ if (!root)
+ handle_root_bridge_insertion(handle);
+ break;
+
+ case ACPI_NOTIFY_EJECT_REQUEST:
+ /* request device eject */
+ printk(KERN_DEBUG "%s: Device eject notify on %s\n", __func__,
+ (char *)buffer.pointer);
+ if (root)
+ handle_root_bridge_removal(root->device);
+ break;
+ default:
+ printk(KERN_WARNING "notify_handler: unknown event type 0x%x for %s\n",
+ type, (char *)buffer.pointer);
+ break;
+ }
+
+ kfree(hp_work); /* allocated in handle_hotplug_event_bridge */
+ kfree(buffer.pointer);
+ }
+
+ static void handle_hotplug_event_root(acpi_handle handle, u32 type,
+ void *context)
+ {
+ alloc_acpi_hp_work(handle, type, context,
+ _handle_hotplug_event_root);
+ }
+
+ static acpi_status __init
+ find_root_bridges(acpi_handle handle, u32 lvl, void *context, void **rv)
+ {
+ acpi_status status;
+ char objname[64];
+ struct acpi_buffer buffer = { .length = sizeof(objname),
+ .pointer = objname };
+ int *count = (int *)context;
+
+ if (!acpi_is_root_bridge(handle))
+ return AE_OK;
+
+ (*count)++;
+
+ acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
+
+ status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
+ handle_hotplug_event_root, NULL);
+ if (ACPI_FAILURE(status))
+ printk(KERN_DEBUG "acpi root: %s notify handler is not installed, exit status: %u\n",
+ objname, (unsigned int)status);
+ else
+ printk(KERN_DEBUG "acpi root: %s notify handler is installed\n",
+ objname);
+
+ return AE_OK;
+ }
+
+ void __init acpi_pci_root_hp_init(void)
+ {
+ int num = 0;
+
+ acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
+ ACPI_UINT32_MAX, find_root_bridges, NULL, &num, NULL);
+
+ printk(KERN_DEBUG "Found %d acpi root devices\n", num);
+ }
printk(KERN_ERR PREFIX "Could not register bus type\n");
}
- acpi_power_init();
acpi_pci_root_init();
+ acpi_pci_link_init();
+ acpi_platform_init();
+ acpi_csrt_init();
+ acpi_container_init();
+ acpi_pci_slot_init();
+ mutex_lock(&acpi_scan_lock);
/*
* Enumerate devices in the ACPI namespace.
*/
acpi_update_all_gpes();
- return 0;
+ acpi_pci_root_hp_init();
+
+ out:
+ mutex_unlock(&acpi_scan_lock);
+ return result;
}
acpi_handle handle;
u32 type;
- hp_work = container_of(work, struct acpiphp_hp_work, work);
+ hp_work = container_of(work, struct acpi_hp_work, work);
handle = hp_work->handle;
type = hp_work->type;
+ bridge = (struct acpiphp_bridge *)hp_work->context;
- if (acpi_bus_get_device(handle, &device)) {
- /* This bridge must have just been physically inserted */
- handle_bridge_insertion(handle, type);
- goto out;
- }
-
- bridge = acpiphp_handle_to_bridge(handle);
- if (type == ACPI_NOTIFY_BUS_CHECK) {
- acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, ACPI_UINT32_MAX,
- count_sub_bridges, NULL, &num_sub_bridges, NULL);
- }
-
- if (!bridge && !num_sub_bridges) {
- err("cannot get bridge info\n");
- goto out;
- }
-
+ acpi_scan_lock_acquire();
+
acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
switch (type) {
break;
}
- out:
+ acpi_scan_lock_release();
kfree(hp_work); /* allocated in handle_hotplug_event_bridge */
}
char objname[64];
struct acpi_buffer buffer = { .length = sizeof(objname),
.pointer = objname };
- struct acpiphp_hp_work *hp_work;
+ struct acpi_hp_work *hp_work;
acpi_handle handle;
u32 type;
- void *context;
- hp_work = container_of(work, struct acpiphp_hp_work, work);
+ hp_work = container_of(work, struct acpi_hp_work, work);
handle = hp_work->handle;
type = hp_work->type;
- context = hp_work->context;
-
- acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
-
- func = (struct acpiphp_func *)context;
+ func = (struct acpiphp_func *)hp_work->context;
+ acpi_scan_lock_acquire();
+
+ acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
+
switch (type) {
case ACPI_NOTIFY_BUS_CHECK:
/* bus re-enumerate */
struct pci_dev *pci_dev = to_pci_dev(dev);
acpi_handle handle = ACPI_HANDLE(dev);
struct acpi_device *adev;
- acpi_status status;
- acpi_handle dummy;
-
- /*
- * Evaluate and parse _PRT, if exists. This code allows parsing of
- * _PRT objects within the scope of non-bridge devices. Note that
- * _PRTs within the scope of a PCI bridge assume the bridge's
- * subordinate bus number.
- *
- * TBD: Can _PRTs exist within the scope of non-bridge PCI devices?
- */
- status = acpi_get_handle(handle, METHOD_NAME__PRT, &dummy);
- if (ACPI_SUCCESS(status)) {
- unsigned char bus;
-
- bus = pci_dev->subordinate ?
- pci_dev->subordinate->number : pci_dev->bus->number;
- acpi_pci_irq_add_prt(handle, pci_domain_nr(pci_dev->bus), bus);
- }
- acpi_power_resource_register_device(dev, handle);
if (acpi_bus_get_device(handle, &adev) || !adev->wakeup.flags.valid)
return;
device_set_run_wake(dev, false);
pci_acpi_remove_pm_notifier(adev);
}
-
- if (pci_dev->subordinate)
- acpi_pci_irq_del_prt(pci_domain_nr(pci_dev->bus),
- pci_dev->subordinate->number);
- acpi_power_resource_unregister_device(dev, handle);
}
static struct acpi_bus_type acpi_pci_bus = {
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff