1 /* 2 * Copyright (C) 2016, Semihalf 3 * Author: Tomasz Nowicki <[email protected]> 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 #define IORT_IRQ_MASK(irq) (irq & 0xffffffffULL) 27 #define IORT_IRQ_TRIGGER_MASK(irq) ((irq >> 32) & 0xffffffffULL) 28 29 int iort_register_domain_token(int trans_id, struct fwnode_handle *fw_node); 30 void iort_deregister_domain_token(int trans_id); 31 struct fwnode_handle *iort_find_domain_token(int trans_id); 32 #ifdef CONFIG_ACPI_IORT 33 void acpi_iort_init(void); 34 bool iort_node_match(u8 type); 35 u32 iort_msi_map_rid(struct device *dev, u32 req_id); 36 struct irq_domain *iort_get_device_domain(struct device *dev, u32 req_id); 37 /* IOMMU interface */ 38 void iort_set_dma_mask(struct device *dev); 39 const struct iommu_ops *iort_iommu_configure(struct device *dev); 40 #else 41 static inline void acpi_iort_init(void) { } 42 static inline bool iort_node_match(u8 type) { return false; } 43 static inline u32 iort_msi_map_rid(struct device *dev, u32 req_id) 44 { return req_id; } 45 static inline struct irq_domain *iort_get_device_domain(struct device *dev, 46 u32 req_id) 47 { return NULL; } 48 /* IOMMU interface */ 49 static inline void iort_set_dma_mask(struct device *dev) { } 50 static inline 51 const struct iommu_ops *iort_iommu_configure(struct device *dev) 52 { return NULL; } 53 #endif 54 55 #define IORT_ACPI_DECLARE(name, table_id, fn) \ 56 ACPI_DECLARE_PROBE_ENTRY(iort, name, table_id, 0, NULL, 0, fn) 57 58 #endif /* __ACPI_IORT_H__ */ 59