1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Copyright(c) 2007 - 2009 Intel Corporation. All rights reserved.
4 */
5#ifndef DCA_H
6#define DCA_H
7
8#include <linux/pci.h>
9
10/* DCA Provider API */
11
12/* DCA Notifier Interface */
13void dca_register_notify(struct notifier_block *nb);
14void dca_unregister_notify(struct notifier_block *nb);
15
16#define DCA_PROVIDER_ADD     0x0001
17#define DCA_PROVIDER_REMOVE  0x0002
18
19struct dca_provider {
20	struct list_head	node;
21	const struct dca_ops	*ops;
22	struct device 		*cd;
23	int			 id;
24};
25
26struct dca_domain {
27	struct list_head	node;
28	struct list_head	dca_providers;
29	struct pci_bus		*pci_rc;
30};
31
32struct dca_ops {
33	int	(*add_requester)    (struct dca_provider *, struct device *);
34	int	(*remove_requester) (struct dca_provider *, struct device *);
35	u8	(*get_tag)	    (struct dca_provider *, struct device *,
36				     int cpu);
37	int	(*dev_managed)      (struct dca_provider *, struct device *);
38};
39
40struct dca_provider *alloc_dca_provider(const struct dca_ops *ops,
41					int priv_size);
42void free_dca_provider(struct dca_provider *dca);
43int register_dca_provider(struct dca_provider *dca, struct device *dev);
44void unregister_dca_provider(struct dca_provider *dca, struct device *dev);
45
46static inline void *dca_priv(struct dca_provider *dca)
47{
48	return (void *)dca + sizeof(struct dca_provider);
49}
50
51/* Requester API */
52#define DCA_GET_TAG_TWO_ARGS
53int dca_add_requester(struct device *dev);
54int dca_remove_requester(struct device *dev);
55u8 dca_get_tag(int cpu);
56u8 dca3_get_tag(struct device *dev, int cpu);
57
58/* internal stuff */
59int __init dca_sysfs_init(void);
60void __exit dca_sysfs_exit(void);
61int dca_sysfs_add_provider(struct dca_provider *dca, struct device *dev);
62void dca_sysfs_remove_provider(struct dca_provider *dca);
63int dca_sysfs_add_req(struct dca_provider *dca, struct device *dev, int slot);
64void dca_sysfs_remove_req(struct dca_provider *dca, int slot);
65
66#endif /* DCA_H */
67