diff options
| author | David Shaohua Li <shaohua.li@intel.com> | 2005-03-18 18:45:35 -0500 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2005-07-11 23:28:24 -0400 |
| commit | 4e10d12a3d88c88fba3258809aa42d14fd8cf1d1 (patch) | |
| tree | 195f69e8e25dec0f7344aab2bbdb353b9639df79 /include | |
| parent | fb9802fa59b196d7f90bb3c2e33c555c6bdc4c54 (diff) | |
[ACPI] Bind PCI devices with ACPI devices
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/acpi/acpi_bus.h | 21 | ||||
| -rw-r--r-- | include/linux/device.h | 6 |
2 files changed, 25 insertions, 2 deletions
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index c627bc408a6..53b821d7b8a 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -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__*/ diff --git a/include/linux/device.h b/include/linux/device.h index df94c0de53f..de2d6fe349d 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -269,8 +269,10 @@ struct device { struct device_driver *driver; /* which driver has allocated this device */ void *driver_data; /* data private to the driver */ - void *platform_data; /* Platform specific data (e.g. ACPI, - BIOS data relevant to device) */ + void *platform_data; /* Platform specific data, device + core doesn't touch it */ + void *firmware_data; /* Firmware specific data (e.g. ACPI, + BIOS data),reserved for device core*/ struct dev_pm_info power; u64 *dma_mask; /* dma mask (if dma'able device) */ |