1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) 2016, Semihalf 4 * Author: Tomasz Nowicki <tn@semihalf.com> 5 */ 6 7 #ifndef __ACPI_IORT_H__ 8 #define __ACPI_IORT_H__ 9 10 #include <linux/acpi.h> 11 #include <linux/fwnode.h> 12 #include <linux/irqdomain.h> 13 14 #define IORT_IRQ_MASK(irq) (irq & 0xffffffffULL) 15 #define IORT_IRQ_TRIGGER_MASK(irq) ((irq >> 32) & 0xffffffffULL) 16 17 /* 18 * PMCG model identifiers for use in smmu pmu driver. Please note 19 * that this is purely for the use of software and has nothing to 20 * do with hardware or with IORT specification. 21 */ 22 #define IORT_SMMU_V3_PMCG_GENERIC 0x00000000 /* Generic SMMUv3 PMCG */ 23 #define IORT_SMMU_V3_PMCG_HISI_HIP08 0x00000001 /* HiSilicon HIP08 PMCG */ 24 25 int iort_register_domain_token(int trans_id, phys_addr_t base, 26 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_id(struct device *dev, u32 id); 32 struct irq_domain *iort_get_device_domain(struct device *dev, u32 id, 33 enum irq_domain_bus_token bus_token); 34 void acpi_configure_pmsi_domain(struct device *dev); 35 int iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id); 36 void iort_get_rmr_sids(struct fwnode_handle *iommu_fwnode, 37 struct list_head *head); 38 void iort_put_rmr_sids(struct fwnode_handle *iommu_fwnode, 39 struct list_head *head); 40 /* IOMMU interface */ 41 int iort_dma_get_ranges(struct device *dev, u64 *size); 42 int iort_iommu_configure_id(struct device *dev, const u32 *id_in); 43 void iort_iommu_get_resv_regions(struct device *dev, struct list_head *head); 44 phys_addr_t acpi_iort_dma_get_max_cpu_address(void); 45 #else 46 static inline void acpi_iort_init(void) { } 47 static inline u32 iort_msi_map_id(struct device *dev, u32 id) 48 { return id; } 49 static inline struct irq_domain *iort_get_device_domain( 50 struct device *dev, u32 id, enum irq_domain_bus_token bus_token) 51 { return NULL; } 52 static inline void acpi_configure_pmsi_domain(struct device *dev) { } 53 static inline 54 void iort_get_rmr_sids(struct fwnode_handle *iommu_fwnode, struct list_head *head) { } 55 static inline 56 void iort_put_rmr_sids(struct fwnode_handle *iommu_fwnode, struct list_head *head) { } 57 /* IOMMU interface */ 58 static inline int iort_dma_get_ranges(struct device *dev, u64 *size) 59 { return -ENODEV; } 60 static inline int iort_iommu_configure_id(struct device *dev, const u32 *id_in) 61 { return -ENODEV; } 62 static inline 63 void iort_iommu_get_resv_regions(struct device *dev, struct list_head *head) 64 { } 65 66 static inline phys_addr_t acpi_iort_dma_get_max_cpu_address(void) 67 { return PHYS_ADDR_MAX; } 68 #endif 69 70 #endif /* __ACPI_IORT_H__ */ 71