From 4e10d12a3d88c88fba3258809aa42d14fd8cf1d1 Mon Sep 17 00:00:00 2001 From: David Shaohua Li Date: Fri, 18 Mar 2005 18:45:35 -0500 Subject: [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 Signed-off-by: Len Brown --- include/acpi/acpi_bus.h | 21 +++++++++++++++++++++ include/linux/device.h | 6 ++++-- 2 files changed, 25 insertions(+), 2 deletions(-) (limited to 'include') 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 +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) */ -- cgit v1.2.3-18-g5258