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 /* DCA Provider API */ 24 25 /* DCA Notifier Interface */ 26 void dca_register_notify(struct notifier_block *nb); 27 void dca_unregister_notify(struct notifier_block *nb); 28 29 #define DCA_PROVIDER_ADD 0x0001 30 #define DCA_PROVIDER_REMOVE 0x0002 31 32 struct dca_provider { 33 struct list_head node; 34 struct dca_ops *ops; 35 struct device *cd; 36 int id; 37 }; 38 39 struct dca_ops { 40 int (*add_requester) (struct dca_provider *, struct device *); 41 int (*remove_requester) (struct dca_provider *, struct device *); 42 u8 (*get_tag) (struct dca_provider *, struct device *, 43 int cpu); 44 int (*dev_managed) (struct dca_provider *, struct device *); 45 }; 46 47 struct dca_provider *alloc_dca_provider(struct dca_ops *ops, int priv_size); 48 void free_dca_provider(struct dca_provider *dca); 49 int register_dca_provider(struct dca_provider *dca, struct device *dev); 50 void unregister_dca_provider(struct dca_provider *dca); 51 52 static inline void *dca_priv(struct dca_provider *dca) 53 { 54 return (void *)dca + sizeof(struct dca_provider); 55 } 56 57 /* Requester API */ 58 #define DCA_GET_TAG_TWO_ARGS 59 int dca_add_requester(struct device *dev); 60 int dca_remove_requester(struct device *dev); 61 u8 dca_get_tag(int cpu); 62 u8 dca3_get_tag(struct device *dev, int cpu); 63 64 /* internal stuff */ 65 int __init dca_sysfs_init(void); 66 void __exit dca_sysfs_exit(void); 67 int dca_sysfs_add_provider(struct dca_provider *dca, struct device *dev); 68 void dca_sysfs_remove_provider(struct dca_provider *dca); 69 int dca_sysfs_add_req(struct dca_provider *dca, struct device *dev, int slot); 70 void dca_sysfs_remove_req(struct dca_provider *dca, int slot); 71 72 #endif /* DCA_H */ 73