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 /* IOMMU interface */ 37 void iort_dma_setup(struct device *dev, u64 *dma_addr, u64 *size); 38 const struct iommu_ops *iort_iommu_configure_id(struct device *dev, 39 const u32 *id_in); 40 int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head); 41 phys_addr_t acpi_iort_dma_get_max_cpu_address(void); 42 #else 43 static inline void acpi_iort_init(void) { } 44 static inline u32 iort_msi_map_id(struct device *dev, u32 id) 45 { return id; } 46 static inline struct irq_domain *iort_get_device_domain( 47 struct device *dev, u32 id, enum irq_domain_bus_token bus_token) 48 { return NULL; } 49 static inline void acpi_configure_pmsi_domain(struct device *dev) { } 50 /* IOMMU interface */ 51 static inline void iort_dma_setup(struct device *dev, u64 *dma_addr, 52 u64 *size) { } 53 static inline const struct iommu_ops *iort_iommu_configure_id( 54 struct device *dev, const u32 *id_in) 55 { return NULL; } 56 static inline 57 int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head) 58 { return 0; } 59 60 static inline phys_addr_t acpi_iort_dma_get_max_cpu_address(void) 61 { return PHYS_ADDR_MAX; } 62 #endif 63 64 #endif /* __ACPI_IORT_H__ */ 65