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
24 #include <linux/pci.h>
25
26 /* DCA Provider API */
27
28 /* DCA Notifier Interface */
29 void dca_register_notify(struct notifier_block *nb);
30 void dca_unregister_notify(struct notifier_block *nb);
31
32 #define DCA_PROVIDER_ADD 0x0001
33 #define DCA_PROVIDER_REMOVE 0x0002
34
35 struct dca_provider {
36 struct list_head node;
37 const struct dca_ops *ops;
38 struct device *cd;
39 int id;
40 };
41
42 struct dca_domain {
43 struct list_head node;
44 struct list_head dca_providers;
45 struct pci_bus *pci_rc;
46 };
47
48 struct dca_ops {
49 int (*add_requester) (struct dca_provider *, struct device *);
50 int (*remove_requester) (struct dca_provider *, struct device *);
51 u8 (*get_tag) (struct dca_provider *, struct device *,
52 int cpu);
53 int (*dev_managed) (struct dca_provider *, struct device *);
54 };
55
56 struct dca_provider *alloc_dca_provider(const struct dca_ops *ops,
57 int priv_size);
58 void free_dca_provider(struct dca_provider *dca);
59 int register_dca_provider(struct dca_provider *dca, struct device *dev);
60 void unregister_dca_provider(struct dca_provider *dca, struct device *dev);
61
dca_priv(struct dca_provider * dca)62 static inline void *dca_priv(struct dca_provider *dca)
63 {
64 return (void *)dca + sizeof(struct dca_provider);
65 }
66
67 /* Requester API */
68 #define DCA_GET_TAG_TWO_ARGS
69 int dca_add_requester(struct device *dev);
70 int dca_remove_requester(struct device *dev);
71 u8 dca_get_tag(int cpu);
72 u8 dca3_get_tag(struct device *dev, int cpu);
73
74 /* internal stuff */
75 int __init dca_sysfs_init(void);
76 void __exit dca_sysfs_exit(void);
77 int dca_sysfs_add_provider(struct dca_provider *dca, struct device *dev);
78 void dca_sysfs_remove_provider(struct dca_provider *dca);
79 int dca_sysfs_add_req(struct dca_provider *dca, struct device *dev, int slot);
80 void dca_sysfs_remove_req(struct dca_provider *dca, int slot);
81
82 #endif /* DCA_H */
83