From 20416ea54087c25502d6fb973b8e119973e16341 Mon Sep 17 00:00:00 2001 From: Kristen Accardi Date: Thu, 23 Feb 2006 17:56:03 -0800 Subject: [PATCH] acpiphp: add dock event handling These patches add generic dock event handling to acpiphp. If there are pci devices that need to be inserted/removed after the dock event, the event notification will be handed down to the normal pci hotplug event handler in acpiphp so that new bridges/devices can be enumerated. Because some dock stations do not have pci bridges or pci devices that need to be inserted after a dock, acpiphp will remain loaded to handle dock events even if no hotpluggable pci slots are discovered. You probably need to have the pci=assign-busses kernel parameter enabled to use these patches, and you may not allow ibm_acpi to handle docking notifications and use this patch. This patch incorporates feedback provided by many. Signed-off-by: Kristen Carlson Accardi Signed-off-by: Greg Kroah-Hartman --- drivers/pci/hotplug/acpiphp.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) (limited to 'drivers/pci/hotplug/acpiphp.h') diff --git a/drivers/pci/hotplug/acpiphp.h b/drivers/pci/hotplug/acpiphp.h index 6a91cfb0f688..885838a2e93f 100644 --- a/drivers/pci/hotplug/acpiphp.h +++ b/drivers/pci/hotplug/acpiphp.h @@ -161,6 +161,25 @@ struct acpiphp_attention_info struct module *owner; }; + +struct dependent_device { + struct list_head device_list; + struct list_head pci_list; + acpi_handle handle; + struct acpiphp_func *func; +}; + + +struct acpiphp_dock_station { + acpi_handle handle; + u32 last_dock_time; + u32 flags; + struct acpiphp_func *dock_bridge; + struct list_head dependent_devices; + struct list_head pci_dependent_devices; +}; + + /* PCI bus bridge HID */ #define ACPI_PCI_HOST_HID "PNP0A03" @@ -198,6 +217,12 @@ struct acpiphp_attention_info #define FUNC_HAS_PS1 (0x00000020) #define FUNC_HAS_PS2 (0x00000040) #define FUNC_HAS_PS3 (0x00000080) +#define FUNC_HAS_DCK (0x00000100) +#define FUNC_IS_DD (0x00000200) + +/* dock station flags */ +#define DOCK_DOCKING (0x00000001) +#define DOCK_HAS_BRIDGE (0x00000002) /* function prototypes */ @@ -211,6 +236,7 @@ extern void acpiphp_glue_exit (void); extern int acpiphp_get_num_slots (void); extern struct acpiphp_slot *get_slot_from_id (int id); typedef int (*acpiphp_callback)(struct acpiphp_slot *slot, void *data); +void handle_hotplug_event_func(acpi_handle, u32, void*); extern int acpiphp_enable_slot (struct acpiphp_slot *slot); extern int acpiphp_disable_slot (struct acpiphp_slot *slot); @@ -220,6 +246,16 @@ extern u8 acpiphp_get_latch_status (struct acpiphp_slot *slot); extern u8 acpiphp_get_adapter_status (struct acpiphp_slot *slot); extern u32 acpiphp_get_address (struct acpiphp_slot *slot); +/* acpiphp_dock.c */ +extern int find_dock_station(void); +extern void remove_dock_station(void); +extern void add_dependent_device(struct dependent_device *new_dd); +extern void add_pci_dependent_device(struct dependent_device *new_dd); +extern struct dependent_device *get_dependent_device(acpi_handle handle); +extern int is_dependent_device(acpi_handle handle); +extern int detect_dependent_devices(acpi_handle *bridge_handle); +extern struct dependent_device *alloc_dependent_device(acpi_handle handle); + /* variables */ extern int acpiphp_debug; -- cgit v1.2.1