1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (C) 2019 Intel Corporation <www.intel.com>
4 */
5
6#ifndef __CACHE_H
7#define __CACHE_H
8
9#include <linux/types.h>
10
11struct udevice;
12
13/*
14 * Structure for the cache controller
15 */
16struct cache_info {
17	phys_addr_t base; /* Base physical address of cache device. */
18};
19
20struct cache_ops {
21	/**
22	 * get_info() - Get basic cache info
23	 *
24	 * @dev:	Device to check (UCLASS_CACHE)
25	 * @info:	Place to put info
26	 * @return 0 if OK, -ve on error
27	 */
28	int (*get_info)(struct udevice *dev, struct cache_info *info);
29
30	/**
31	 * enable() - Enable cache
32	 *
33	 * @dev:	Device to check (UCLASS_CACHE)
34	 * @return 0 if OK, -ve on error
35	 */
36	int (*enable)(struct udevice *dev);
37
38	/**
39	 * disable() - Flush and disable cache
40	 *
41	 * @dev:	Device to check (UCLASS_CACHE)
42	 * @return 0 if OK, -ve on error
43	 */
44	int (*disable)(struct udevice *dev);
45};
46
47#define cache_get_ops(dev)	((struct cache_ops *)(dev)->driver->ops)
48
49/**
50 * cache_get_info() - Get information about a cache controller
51 *
52 * @dev:	Device to check (UCLASS_CACHE)
53 * @info:	Returns cache info
54 * Return: 0 if OK, -ve on error
55 */
56int cache_get_info(struct udevice *dev, struct cache_info *info);
57
58/**
59 * cache_enable() - Enable cache
60 *
61 * @dev:	Device to check (UCLASS_CACHE)
62 * Return: 0 if OK, -ve on error
63 */
64int cache_enable(struct udevice *dev);
65
66/**
67 * cache_disable() - Flush and disable cache
68 *
69 * @dev:	Device to check (UCLASS_CACHE)
70 * Return: 0 if OK, -ve on error
71 */
72int cache_disable(struct udevice *dev);
73#endif
74