include/linux/acpi_iort.h

   1 /*
   2  * Copyright (C) 2016, Semihalf
   3  *      Author: Tomasz Nowicki <tn@semihalf.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope 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 Temple
  16  * Place - Suite 330, Boston, MA 02111-1307 USA.
  17  */
  18
  19 #ifndef __ACPI_IORT_H__
  20 #define __ACPI_IORT_H__
  21
  22 #include <linux/acpi.h>
  23 #include <linux/fwnode.h>
  24 #include <linux/irqdomain.h>
  25
  26 int iort_register_domain_token(int trans_id, struct fwnode_handle *fw_node);
  27 void iort_deregister_domain_token(int trans_id);
  28 struct fwnode_handle *iort_find_domain_token(int trans_id);
  29 #ifdef CONFIG_ACPI_IORT
  30 void acpi_iort_init(void);
  31 u32 iort_msi_map_rid(struct device *dev, u32 req_id);
  32 struct irq_domain *iort_get_device_domain(struct device *dev, u32 req_id);
  33 #else
  34 static inline void acpi_iort_init(void) { }
  35 static inline u32 iort_msi_map_rid(struct device *dev, u32 req_id)
  36 { return req_id; }
  37 static inline struct irq_domain *iort_get_device_domain(struct device *dev,
  38                                                         u32 req_id)
  39 { return NULL; }
  40 #endif
  41
  42 #endif /* __ACPI_IORT_H__ */