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review.shift-gmbh.com / SHIFTPHONES / kernel / common / da4ad88cab5867ee240dfd0585e9d115a8cc47db / . / include / linux / dca.h
blob: d6228e334f48f79c30a36ceda314cb112bf29257 [file] [log] [blame]
Thomas Gleixnere62d9492019-05-20 19:07:58 +0200[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0-or-later */
Maciej Sosnowskie2fc4d12009-03-21 13:31:23 -0700[diff] [blame]2/*
3 * Copyright(c) 2007 - 2009 Intel Corporation. All rights reserved.
Maciej Sosnowskie2fc4d12009-03-21 13:31:23 -0700[diff] [blame]4 */
Shannon Nelson75896702007-10-16 01:27:41 -0700[diff] [blame]5#ifndef DCA_H
6#define DCA_H
Maciej Sosnowski1a5aeee2009-09-10 15:05:58 +0200[diff] [blame]7
8#include <linux/pci.h>
9
Shannon Nelson75896702007-10-16 01:27:41 -0700[diff] [blame]10/* DCA Provider API */
11
12/* DCA Notifier Interface */
13void dca_register_notify(struct notifier_block *nb);
14void dca_unregister_notify(struct notifier_block *nb);
15
16#define DCA_PROVIDER_ADD 0x0001
17#define DCA_PROVIDER_REMOVE 0x0002
18
19struct dca_provider {
Maciej Sosnowski7f1b3582008-07-22 17:30:57 -0700[diff] [blame]20 struct list_head node;
Julia Lawall2bb129e2015-11-13 12:46:00 +0100[diff] [blame]21 const struct dca_ops *ops;
Kay Sievers765cdb62008-02-08 15:00:49 -0800[diff] [blame]22 struct device *cd;
Shannon Nelson75896702007-10-16 01:27:41 -0700[diff] [blame]23 int id;
24};
25
Maciej Sosnowski1a5aeee2009-09-10 15:05:58 +0200[diff] [blame]26struct dca_domain {
27 struct list_head node;
28 struct list_head dca_providers;
29 struct pci_bus *pci_rc;
30};
31
Shannon Nelson75896702007-10-16 01:27:41 -0700[diff] [blame]32struct dca_ops {
33 int (*add_requester) (struct dca_provider *, struct device *);
34 int (*remove_requester) (struct dca_provider *, struct device *);
Maciej Sosnowski7f1b3582008-07-22 17:30:57 -0700[diff] [blame]35 u8 (*get_tag) (struct dca_provider *, struct device *,
36 int cpu);
37 int (*dev_managed) (struct dca_provider *, struct device *);
Shannon Nelson75896702007-10-16 01:27:41 -0700[diff] [blame]38};
39
Julia Lawall2bb129e2015-11-13 12:46:00 +0100[diff] [blame]40struct dca_provider *alloc_dca_provider(const struct dca_ops *ops,
41 int priv_size);
Shannon Nelson75896702007-10-16 01:27:41 -0700[diff] [blame]42void free_dca_provider(struct dca_provider *dca);
43int register_dca_provider(struct dca_provider *dca, struct device *dev);
Maciej Sosnowski1a5aeee2009-09-10 15:05:58 +0200[diff] [blame]44void unregister_dca_provider(struct dca_provider *dca, struct device *dev);
Shannon Nelson75896702007-10-16 01:27:41 -0700[diff] [blame]45
46static inline void *dca_priv(struct dca_provider *dca)
47{
48 return (void *)dca + sizeof(struct dca_provider);
49}
50
51/* Requester API */
Maciej Sosnowski7f1b3582008-07-22 17:30:57 -0700[diff] [blame]52#define DCA_GET_TAG_TWO_ARGS
Shannon Nelson75896702007-10-16 01:27:41 -0700[diff] [blame]53int dca_add_requester(struct device *dev);
54int dca_remove_requester(struct device *dev);
55u8 dca_get_tag(int cpu);
Maciej Sosnowski7f1b3582008-07-22 17:30:57 -0700[diff] [blame]56u8 dca3_get_tag(struct device *dev, int cpu);
Shannon Nelson75896702007-10-16 01:27:41 -0700[diff] [blame]57
58/* internal stuff */
59int __init dca_sysfs_init(void);
60void __exit dca_sysfs_exit(void);
61int dca_sysfs_add_provider(struct dca_provider *dca, struct device *dev);
62void dca_sysfs_remove_provider(struct dca_provider *dca);
63int dca_sysfs_add_req(struct dca_provider *dca, struct device *dev, int slot);
64void dca_sysfs_remove_req(struct dca_provider *dca, int slot);
65
66#endif /* DCA_H */