diff options
Diffstat (limited to 'kernel/include/linux/dca.h')
| -rw-r--r-- | kernel/include/linux/dca.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/kernel/include/linux/dca.h b/kernel/include/linux/dca.h new file mode 100644 index 000000000..d27a7a057 --- /dev/null +++ b/kernel/include/linux/dca.h @@ -0,0 +1,81 @@ +/* + * Copyright(c) 2007 - 2009 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * The full GNU General Public License is included in this distribution in the + * file called COPYING. + */ +#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; + 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(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 */ |