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1/*
2 * Copyright(c) 2007 - 2009 Intel Corporation. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by the Free
6 * Software Foundation; either version 2 of the License, or (at your option)
7 * any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc., 59
16 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 *
18 * The full GNU General Public License is included in this distribution in the
19 * file called COPYING.
20 */
21#ifndef DCA_H
22#define DCA_H
23/* DCA Provider API */
24
25/* DCA Notifier Interface */
26void dca_register_notify(struct notifier_block *nb);
27void dca_unregister_notify(struct notifier_block *nb);
28
29#define DCA_PROVIDER_ADD 0x0001
30#define DCA_PROVIDER_REMOVE 0x0002
31
32struct dca_provider {
33 struct list_head node;
34 struct dca_ops *ops;
35 struct device *cd;
36 int id;
37};
38
39struct dca_ops {
40 int (*add_requester) (struct dca_provider *, struct device *);
41 int (*remove_requester) (struct dca_provider *, struct device *);
42 u8 (*get_tag) (struct dca_provider *, struct device *,
43 int cpu);
44 int (*dev_managed) (struct dca_provider *, struct device *);
45};
46
47struct dca_provider *alloc_dca_provider(struct dca_ops *ops, int priv_size);
48void free_dca_provider(struct dca_provider *dca);
49int register_dca_provider(struct dca_provider *dca, struct device *dev);
50void unregister_dca_provider(struct dca_provider *dca);
51
52static inline void *dca_priv(struct dca_provider *dca)
53{
54 return (void *)dca + sizeof(struct dca_provider);
55}
56
57/* Requester API */
58#define DCA_GET_TAG_TWO_ARGS
59int dca_add_requester(struct device *dev);
60int dca_remove_requester(struct device *dev);
61u8 dca_get_tag(int cpu);
62u8 dca3_get_tag(struct device *dev, int cpu);
63
64/* internal stuff */
65int __init dca_sysfs_init(void);
66void __exit dca_sysfs_exit(void);
67int dca_sysfs_add_provider(struct dca_provider *dca, struct device *dev);
68void dca_sysfs_remove_provider(struct dca_provider *dca);
69int dca_sysfs_add_req(struct dca_provider *dca, struct device *dev, int slot);
70void dca_sysfs_remove_req(struct dca_provider *dca, int slot);
71
72#endif /* DCA_H */