| /* SPDX-License-Identifier: GPL-2.0 | |
| * | |
| * Header file for the CDX Bus | |
| * | |
| * Copyright (C) 2022-2023, Advanced Micro Devices, Inc. | |
| */ | |
| #ifndef _CDX_H_ | |
| #define _CDX_H_ | |
| #include <linux/cdx/cdx_bus.h> | |
| /** | |
| * struct cdx_dev_params - CDX device parameters | |
| * @cdx: CDX controller associated with the device | |
| * @parent: Associated CDX Bus device | |
| * @vendor: Vendor ID for CDX device | |
| * @device: Device ID for CDX device | |
| * @subsys_vendor: Sub vendor ID for CDX device | |
| * @subsys_device: Sub device ID for CDX device | |
| * @bus_num: Bus number for this CDX device | |
| * @dev_num: Device number for this device | |
| * @res: array of MMIO region entries | |
| * @res_count: number of valid MMIO regions | |
| * @req_id: Requestor ID associated with CDX device | |
| * @class: Class of the CDX Device | |
| * @revision: Revision of the CDX device | |
| */ | |
| struct cdx_dev_params { | |
| struct cdx_controller *cdx; | |
| struct device *parent; | |
| u16 vendor; | |
| u16 device; | |
| u16 subsys_vendor; | |
| u16 subsys_device; | |
| u8 bus_num; | |
| u8 dev_num; | |
| struct resource res[MAX_CDX_DEV_RESOURCES]; | |
| u8 res_count; | |
| u32 req_id; | |
| u32 class; | |
| u8 revision; | |
| }; | |
| /** | |
| * cdx_register_controller - Register a CDX controller and its ports | |
| * on the CDX bus. | |
| * @cdx: The CDX controller to register | |
| * | |
| * Return: -errno on failure, 0 on success. | |
| */ | |
| int cdx_register_controller(struct cdx_controller *cdx); | |
| /** | |
| * cdx_unregister_controller - Unregister a CDX controller | |
| * @cdx: The CDX controller to unregister | |
| */ | |
| void cdx_unregister_controller(struct cdx_controller *cdx); | |
| /** | |
| * cdx_device_add - Add a CDX device. This function adds a CDX device | |
| * on the CDX bus as per the device parameters provided | |
| * by caller. It also creates and registers an associated | |
| * Linux generic device. | |
| * @dev_params: device parameters associated with the device to be created. | |
| * | |
| * Return: -errno on failure, 0 on success. | |
| */ | |
| int cdx_device_add(struct cdx_dev_params *dev_params); | |
| /** | |
| * cdx_bus_add - Add a CDX bus. This function adds a bus on the CDX bus | |
| * subsystem. It creates a CDX device for the corresponding bus and | |
| * also registers an associated Linux generic device. | |
| * @cdx: Associated CDX controller | |
| * @us_num: Bus number | |
| * | |
| * Return: associated Linux generic device pointer on success or NULL on failure. | |
| */ | |
| struct device *cdx_bus_add(struct cdx_controller *cdx, u8 bus_num); | |
| #endif /* _CDX_H_ */ |