1 /* SPDX-License-Identifier: GPL-2.0
3 * Header file for the CDX Bus
5 * Copyright (C) 2022-2023, Advanced Micro Devices, Inc.
11 #include <linux/cdx/cdx_bus.h>
14 * struct cdx_dev_params - CDX device parameters
15 * @cdx: CDX controller associated with the device
16 * @parent: Associated CDX controller
17 * @vendor: Vendor ID for CDX device
18 * @device: Device ID for CDX device
19 * @bus_num: Bus number for this CDX device
20 * @dev_num: Device number for this device
21 * @res: array of MMIO region entries
22 * @res_count: number of valid MMIO regions
23 * @req_id: Requestor ID associated with CDX device
25 struct cdx_dev_params {
26 struct cdx_controller *cdx;
31 struct resource res[MAX_CDX_DEV_RESOURCES];
37 * cdx_register_controller - Register a CDX controller and its ports
39 * @cdx: The CDX controller to register
41 * Return: -errno on failure, 0 on success.
43 int cdx_register_controller(struct cdx_controller *cdx);
46 * cdx_unregister_controller - Unregister a CDX controller
47 * @cdx: The CDX controller to unregister
49 void cdx_unregister_controller(struct cdx_controller *cdx);
52 * cdx_device_add - Add a CDX device. This function adds a CDX device
53 * on the CDX bus as per the device parameters provided
54 * by caller. It also creates and registers an associated
55 * Linux generic device.
56 * @dev_params: device parameters associated with the device to be created.
58 * Return: -errno on failure, 0 on success.
60 int cdx_device_add(struct cdx_dev_params *dev_params);