| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Copyright(c) 2007 - 2009 Intel Corporation. All rights reserved. |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 */ |