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 #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, phys_addr_t base, 30 struct fwnode_handle *fw_node); 31 void iort_deregister_domain_token(int trans_id); 32 struct fwnode_handle *iort_find_domain_token(int trans_id); 33 #ifdef CONFIG_ACPI_IORT 34 void acpi_iort_init(void); 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 void acpi_configure_pmsi_domain(struct device *dev); 38 int iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id); 39 /* IOMMU interface */ 40 void iort_dma_setup(struct device *dev, u64 *dma_addr, u64 *size); 41 const struct iommu_ops *iort_iommu_configure(struct device *dev); 42 int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head); 43 #else 44 static inline void acpi_iort_init(void) { } 45 static inline u32 iort_msi_map_rid(struct device *dev, u32 req_id) 46 { return req_id; } 47 static inline struct irq_domain *iort_get_device_domain(struct device *dev, 48 u32 req_id) 49 { return NULL; } 50 static inline void acpi_configure_pmsi_domain(struct device *dev) { } 51 /* IOMMU interface */ 52 static inline void iort_dma_setup(struct device *dev, u64 *dma_addr, 53 u64 *size) { } 54 static inline const struct iommu_ops *iort_iommu_configure( 55 struct device *dev) 56 { return NULL; } 57 static inline 58 int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head) 59 { return 0; } 60 #endif 61 62 #endif /* __ACPI_IORT_H__ */ 63