1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Interconnect framework internal structs
4  *
5  * Copyright (c) 2019, Linaro Ltd.
6  * Author: Georgi Djakov <georgi.djakov@linaro.org>
7  */
8 
9 #ifndef __DRIVERS_INTERCONNECT_INTERNAL_H
10 #define __DRIVERS_INTERCONNECT_INTERNAL_H
11 
12 /**
13  * struct icc_req - constraints that are attached to each node
14  * @req_node: entry in list of requests for the particular @node
15  * @node: the interconnect node to which this constraint applies
16  * @dev: reference to the device that sets the constraints
17  * @enabled: indicates whether the path with this request is enabled
18  * @tag: path tag (optional)
19  * @avg_bw: an integer describing the average bandwidth in kBps
20  * @peak_bw: an integer describing the peak bandwidth in kBps
21  */
22 struct icc_req {
23 	struct hlist_node req_node;
24 	struct icc_node *node;
25 	struct device *dev;
26 	bool enabled;
27 	u32 tag;
28 	u32 avg_bw;
29 	u32 peak_bw;
30 };
31 
32 /**
33  * struct icc_path - interconnect path structure
34  * @name: a string name of the path (useful for ftrace)
35  * @num_nodes: number of hops (nodes)
36  * @reqs: array of the requests applicable to this path of nodes
37  */
38 struct icc_path {
39 	const char *name;
40 	size_t num_nodes;
41 	struct icc_req reqs[] __counted_by(num_nodes);
42 };
43 
44 struct icc_path *icc_get(struct device *dev, const char *src, const char *dst);
45 int icc_debugfs_client_init(struct dentry *icc_dir);
46 
47 #endif
48