1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright(c) 2007 - 2009 Intel Corporation. All rights reserved.
4*4882a593Smuzhiyun */
5*4882a593Smuzhiyun #ifndef DCA_H
6*4882a593Smuzhiyun #define DCA_H
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <linux/pci.h>
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun /* DCA Provider API */
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun /* DCA Notifier Interface */
13*4882a593Smuzhiyun void dca_register_notify(struct notifier_block *nb);
14*4882a593Smuzhiyun void dca_unregister_notify(struct notifier_block *nb);
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun #define DCA_PROVIDER_ADD 0x0001
17*4882a593Smuzhiyun #define DCA_PROVIDER_REMOVE 0x0002
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun struct dca_provider {
20*4882a593Smuzhiyun struct list_head node;
21*4882a593Smuzhiyun const struct dca_ops *ops;
22*4882a593Smuzhiyun struct device *cd;
23*4882a593Smuzhiyun int id;
24*4882a593Smuzhiyun };
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun struct dca_domain {
27*4882a593Smuzhiyun struct list_head node;
28*4882a593Smuzhiyun struct list_head dca_providers;
29*4882a593Smuzhiyun struct pci_bus *pci_rc;
30*4882a593Smuzhiyun };
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun struct dca_ops {
33*4882a593Smuzhiyun int (*add_requester) (struct dca_provider *, struct device *);
34*4882a593Smuzhiyun int (*remove_requester) (struct dca_provider *, struct device *);
35*4882a593Smuzhiyun u8 (*get_tag) (struct dca_provider *, struct device *,
36*4882a593Smuzhiyun int cpu);
37*4882a593Smuzhiyun int (*dev_managed) (struct dca_provider *, struct device *);
38*4882a593Smuzhiyun };
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun struct dca_provider *alloc_dca_provider(const struct dca_ops *ops,
41*4882a593Smuzhiyun int priv_size);
42*4882a593Smuzhiyun void free_dca_provider(struct dca_provider *dca);
43*4882a593Smuzhiyun int register_dca_provider(struct dca_provider *dca, struct device *dev);
44*4882a593Smuzhiyun void unregister_dca_provider(struct dca_provider *dca, struct device *dev);
45*4882a593Smuzhiyun
dca_priv(struct dca_provider * dca)46*4882a593Smuzhiyun static inline void *dca_priv(struct dca_provider *dca)
47*4882a593Smuzhiyun {
48*4882a593Smuzhiyun return (void *)dca + sizeof(struct dca_provider);
49*4882a593Smuzhiyun }
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun /* Requester API */
52*4882a593Smuzhiyun #define DCA_GET_TAG_TWO_ARGS
53*4882a593Smuzhiyun int dca_add_requester(struct device *dev);
54*4882a593Smuzhiyun int dca_remove_requester(struct device *dev);
55*4882a593Smuzhiyun u8 dca_get_tag(int cpu);
56*4882a593Smuzhiyun u8 dca3_get_tag(struct device *dev, int cpu);
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun /* internal stuff */
59*4882a593Smuzhiyun int __init dca_sysfs_init(void);
60*4882a593Smuzhiyun void __exit dca_sysfs_exit(void);
61*4882a593Smuzhiyun int dca_sysfs_add_provider(struct dca_provider *dca, struct device *dev);
62*4882a593Smuzhiyun void dca_sysfs_remove_provider(struct dca_provider *dca);
63*4882a593Smuzhiyun int dca_sysfs_add_req(struct dca_provider *dca, struct device *dev, int slot);
64*4882a593Smuzhiyun void dca_sysfs_remove_req(struct dca_provider *dca, int slot);
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun #endif /* DCA_H */
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