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[ACPI] Bind PCI devices with ACPI devices

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Implement the framework for binding physical devices
with ACPI devices. A physical bus like PCI bus
should create a 'acpi_bus_type', with:

.find_device:
        For device which has parent such as normal PCI devices.

.find_bridge:
        It's for special devices, such as PCI root bridge
	or IDE controller.  Such devices generally haven't a
	parent or ->bus. We use the special method
	to get an ACPI handle.

Uses new field in struct device: firmware_data

http://bugzilla.kernel.org/show_bug.cgi?id=4277

Signed-off-by: David Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
David Shaohua Li
2005-03-18 18:45:35 -05:00
committed by Len Brown
parent fb9802fa59
commit 4e10d12a3d
5 changed files with 390 additions and 5 deletions
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21
include/acpi/acpi_bus.h
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@@ -336,6 +336,27 @@ int acpi_match_ids (struct acpi_device *device, char *ids);
int acpi_create_dir(struct acpi_device *);
void acpi_remove_dir(struct acpi_device *);
/*
* Bind physical devices with ACPI devices
*/
#include <linux/device.h>
struct acpi_bus_type {
struct list_head list;
struct bus_type *bus;
/* For general devices under the bus*/
int (*find_device)(struct device *, acpi_handle*);
/* For bridges, such as PCI root bridge, IDE controller */
int (*find_bridge)(struct device *, acpi_handle *);
};
int register_acpi_bus_type(struct acpi_bus_type *);
int unregister_acpi_bus_type(struct acpi_bus_type *);
struct device *acpi_get_physical_device(acpi_handle);
/* helper */
acpi_handle acpi_get_child(acpi_handle, acpi_integer);
acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int);
#define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->firmware_data))
#endif /*CONFIG_ACPI_BUS*/
#endif /*__ACPI_BUS_H__*/