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include/linux/dca.h
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright(c) 2007 - 2009 Intel Corporation. All rights reserved.
*/
#ifndef DCA_H
#define DCA_H
#include <linux/pci.h>
/* DCA Provider API */
/* DCA Notifier Interface */
void dca_register_notify(struct notifier_block *nb);
void dca_unregister_notify(struct notifier_block *nb);
#define DCA_PROVIDER_ADD 0x0001
#define DCA_PROVIDER_REMOVE 0x0002
struct dca_provider {
struct list_head node;
const struct dca_ops *ops;
struct device *cd;
int id;
};
struct dca_domain {
struct list_head node;
struct list_head dca_providers;
struct pci_bus *pci_rc;
};
struct dca_ops {
int (*add_requester) (struct dca_provider *, struct device *);
int (*remove_requester) (struct dca_provider *, struct device *);
u8 (*get_tag) (struct dca_provider *, struct device *,
int cpu);
int (*dev_managed) (struct dca_provider *, struct device *);
};
struct dca_provider *alloc_dca_provider(const struct dca_ops *ops,
int priv_size);
void free_dca_provider(struct dca_provider *dca);
int register_dca_provider(struct dca_provider *dca, struct device *dev);
void unregister_dca_provider(struct dca_provider *dca, struct device *dev);
static inline void *dca_priv(struct dca_provider *dca)
{
return (void *)dca + sizeof(struct dca_provider);
}
/* Requester API */
#define DCA_GET_TAG_TWO_ARGS
int dca_add_requester(struct device *dev);
int dca_remove_requester(struct device *dev);
u8 dca_get_tag(int cpu);
u8 dca3_get_tag(struct device *dev, int cpu);
/* internal stuff */
int __init dca_sysfs_init(void);
void __exit dca_sysfs_exit(void);
int dca_sysfs_add_provider(struct dca_provider *dca, struct device *dev);
void dca_sysfs_remove_provider(struct dca_provider *dca);
int dca_sysfs_add_req(struct dca_provider *dca, struct device *dev, int slot);
void dca_sysfs_remove_req(struct dca_provider *dca, int slot);
#endif /* DCA_H */
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