1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) 2016, Semihalf 4 * Author: Tomasz Nowicki <[email protected]> 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_rid(struct device *dev, u32 req_id); 32 struct irq_domain *iort_get_device_domain(struct device *dev, u32 req_id); 33 void acpi_configure_pmsi_domain(struct device *dev); 34 int iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id); 35 /* IOMMU interface */ 36 void iort_dma_setup(struct device *dev, u64 *dma_addr, u64 *size); 37 const struct iommu_ops *iort_iommu_configure(struct device *dev); 38 int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head); 39 #else 40 static inline void acpi_iort_init(void) { } 41 static inline u32 iort_msi_map_rid(struct device *dev, u32 req_id) 42 { return req_id; } 43 static inline struct irq_domain *iort_get_device_domain(struct device *dev, 44 u32 req_id) 45 { return NULL; } 46 static inline void acpi_configure_pmsi_domain(struct device *dev) { } 47 /* IOMMU interface */ 48 static inline void iort_dma_setup(struct device *dev, u64 *dma_addr, 49 u64 *size) { } 50 static inline const struct iommu_ops *iort_iommu_configure( 51 struct device *dev) 52 { return NULL; } 53 static inline 54 int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head) 55 { return 0; } 56 #endif 57 58 #endif /* __ACPI_IORT_H__ */ 59