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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 | ||
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 | ||
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 */ |