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Maciej Sosnowskie2fc4d12009-03-21 13:31:23 -07001/*
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 */
Shannon Nelson75896702007-10-16 01:27:41 -070021#ifndef DCA_H
22#define DCA_H
Maciej Sosnowski1a5aeee2009-09-10 15:05:58 +020023
24#include <linux/pci.h>
25
Shannon Nelson75896702007-10-16 01:27:41 -070026/* DCA Provider API */
27
28/* DCA Notifier Interface */
29void dca_register_notify(struct notifier_block *nb);
30void dca_unregister_notify(struct notifier_block *nb);
31
32#define DCA_PROVIDER_ADD 0x0001
33#define DCA_PROVIDER_REMOVE 0x0002
34
35struct dca_provider {
Maciej Sosnowski7f1b3582008-07-22 17:30:57 -070036 struct list_head node;
Shannon Nelson75896702007-10-16 01:27:41 -070037 struct dca_ops *ops;
Kay Sievers765cdb62008-02-08 15:00:49 -080038 struct device *cd;
Shannon Nelson75896702007-10-16 01:27:41 -070039 int id;
40};
41
Maciej Sosnowski1a5aeee2009-09-10 15:05:58 +020042struct dca_domain {
43 struct list_head node;
44 struct list_head dca_providers;
45 struct pci_bus *pci_rc;
46};
47
Shannon Nelson75896702007-10-16 01:27:41 -070048struct dca_ops {
49 int (*add_requester) (struct dca_provider *, struct device *);
50 int (*remove_requester) (struct dca_provider *, struct device *);
Maciej Sosnowski7f1b3582008-07-22 17:30:57 -070051 u8 (*get_tag) (struct dca_provider *, struct device *,
52 int cpu);
53 int (*dev_managed) (struct dca_provider *, struct device *);
Shannon Nelson75896702007-10-16 01:27:41 -070054};
55
56struct dca_provider *alloc_dca_provider(struct dca_ops *ops, int priv_size);
57void free_dca_provider(struct dca_provider *dca);
58int register_dca_provider(struct dca_provider *dca, struct device *dev);
Maciej Sosnowski1a5aeee2009-09-10 15:05:58 +020059void unregister_dca_provider(struct dca_provider *dca, struct device *dev);
Shannon Nelson75896702007-10-16 01:27:41 -070060
61static inline void *dca_priv(struct dca_provider *dca)
62{
63 return (void *)dca + sizeof(struct dca_provider);
64}
65
66/* Requester API */
Maciej Sosnowski7f1b3582008-07-22 17:30:57 -070067#define DCA_GET_TAG_TWO_ARGS
Shannon Nelson75896702007-10-16 01:27:41 -070068int dca_add_requester(struct device *dev);
69int dca_remove_requester(struct device *dev);
70u8 dca_get_tag(int cpu);
Maciej Sosnowski7f1b3582008-07-22 17:30:57 -070071u8 dca3_get_tag(struct device *dev, int cpu);
Shannon Nelson75896702007-10-16 01:27:41 -070072
73/* internal stuff */
74int __init dca_sysfs_init(void);
75void __exit dca_sysfs_exit(void);
76int dca_sysfs_add_provider(struct dca_provider *dca, struct device *dev);
77void dca_sysfs_remove_provider(struct dca_provider *dca);
78int dca_sysfs_add_req(struct dca_provider *dca, struct device *dev, int slot);
79void dca_sysfs_remove_req(struct dca_provider *dca, int slot);
80
81#endif /* DCA_H */