1 /* 2 * Copyright(c) 2007 - 2009 Intel Corporation. All rights reserved. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License as published by the Free 6 * Software Foundation; either version 2 of the License, or (at your option) 7 * any later version. 8 * 9 * This program is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 12 * more details. 13 * 14 * You should have received a copy of the GNU General Public License along with 15 * this program; if not, write to the Free Software Foundation, Inc., 59 16 * Temple Place - Suite 330, Boston, MA 02111-1307, USA. 17 * 18 * The full GNU General Public License is included in this distribution in the 19 * file called COPYING. 20 */ 21 #ifndef DCA_H 22 #define DCA_H 23 24 #include <linux/pci.h> 25 26 /* DCA Provider API */ 27 28 /* DCA Notifier Interface */ 29 void dca_register_notify(struct notifier_block *nb); 30 void dca_unregister_notify(struct notifier_block *nb); 31 32 #define DCA_PROVIDER_ADD 0x0001 33 #define DCA_PROVIDER_REMOVE 0x0002 34 35 struct dca_provider { 36 struct list_head node; 37 const struct dca_ops *ops; 38 struct device *cd; 39 int id; 40 }; 41 42 struct dca_domain { 43 struct list_head node; 44 struct list_head dca_providers; 45 struct pci_bus *pci_rc; 46 }; 47 48 struct dca_ops { 49 int (*add_requester) (struct dca_provider *, struct device *); 50 int (*remove_requester) (struct dca_provider *, struct device *); 51 u8 (*get_tag) (struct dca_provider *, struct device *, 52 int cpu); 53 int (*dev_managed) (struct dca_provider *, struct device *); 54 }; 55 56 struct dca_provider *alloc_dca_provider(const struct dca_ops *ops, 57 int priv_size); 58 void free_dca_provider(struct dca_provider *dca); 59 int register_dca_provider(struct dca_provider *dca, struct device *dev); 60 void unregister_dca_provider(struct dca_provider *dca, struct device *dev); 61 62 static inline void *dca_priv(struct dca_provider *dca) 63 { 64 return (void *)dca + sizeof(struct dca_provider); 65 } 66 67 /* Requester API */ 68 #define DCA_GET_TAG_TWO_ARGS 69 int dca_add_requester(struct device *dev); 70 int dca_remove_requester(struct device *dev); 71 u8 dca_get_tag(int cpu); 72 u8 dca3_get_tag(struct device *dev, int cpu); 73 74 /* internal stuff */ 75 int __init dca_sysfs_init(void); 76 void __exit dca_sysfs_exit(void); 77 int dca_sysfs_add_provider(struct dca_provider *dca, struct device *dev); 78 void dca_sysfs_remove_provider(struct dca_provider *dca); 79 int dca_sysfs_add_req(struct dca_provider *dca, struct device *dev, int slot); 80 void dca_sysfs_remove_req(struct dca_provider *dca, int slot); 81 82 #endif /* DCA_H */ 83