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 */ |
13 | void dca_register_notify(struct notifier_block *nb); |
14 | void dca_unregister_notify(struct notifier_block *nb); |
15 | |
16 | #define DCA_PROVIDER_ADD 0x0001 |
17 | #define DCA_PROVIDER_REMOVE 0x0002 |
18 | |
19 | struct dca_provider { |
20 | struct list_head node; |
21 | const struct dca_ops *ops; |
22 | struct device *cd; |
23 | int id; |
24 | }; |
25 | |
26 | struct dca_domain { |
27 | struct list_head node; |
28 | struct list_head dca_providers; |
29 | struct pci_bus *pci_rc; |
30 | }; |
31 | |
32 | struct 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 | |
40 | struct dca_provider *alloc_dca_provider(const struct dca_ops *ops, |
41 | int priv_size); |
42 | void free_dca_provider(struct dca_provider *dca); |
43 | int register_dca_provider(struct dca_provider *dca, struct device *dev); |
44 | void unregister_dca_provider(struct dca_provider *dca, struct device *dev); |
45 | |
46 | static 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 |
53 | int dca_add_requester(struct device *dev); |
54 | int dca_remove_requester(struct device *dev); |
55 | u8 dca_get_tag(int cpu); |
56 | u8 dca3_get_tag(struct device *dev, int cpu); |
57 | |
58 | /* internal stuff */ |
59 | int __init dca_sysfs_init(void); |
60 | void __exit dca_sysfs_exit(void); |
61 | int dca_sysfs_add_provider(struct dca_provider *dca, struct device *dev); |
62 | void dca_sysfs_remove_provider(struct dca_provider *dca); |
63 | int dca_sysfs_add_req(struct dca_provider *dca, struct device *dev, int slot); |
64 | void dca_sysfs_remove_req(struct dca_provider *dca, int slot); |
65 | |
66 | #endif /* DCA_H */ |
67 | |