| /* 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 */ |