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 /* 30 * PMCG model identifiers for use in smmu pmu driver. Please note 31 * that this is purely for the use of software and has nothing to 32 * do with hardware or with IORT specification. 33 */ 34 #define IORT_SMMU_V3_PMCG_GENERIC 0x00000000 /* Generic SMMUv3 PMCG */ 35 #define IORT_SMMU_V3_PMCG_HISI_HIP08 0x00000001 /* HiSilicon HIP08 PMCG */ 36 37 int iort_register_domain_token(int trans_id, phys_addr_t base, 38 struct fwnode_handle *fw_node); 39 void iort_deregister_domain_token(int trans_id); 40 struct fwnode_handle *iort_find_domain_token(int trans_id); 41 #ifdef CONFIG_ACPI_IORT 42 void acpi_iort_init(void); 43 u32 iort_msi_map_rid(struct device *dev, u32 req_id); 44 struct irq_domain *iort_get_device_domain(struct device *dev, u32 req_id); 45 void acpi_configure_pmsi_domain(struct device *dev); 46 int iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id); 47 /* IOMMU interface */ 48 void iort_dma_setup(struct device *dev, u64 *dma_addr, u64 *size); 49 const struct iommu_ops *iort_iommu_configure(struct device *dev); 50 int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head); 51 #else 52 static inline void acpi_iort_init(void) { } 53 static inline u32 iort_msi_map_rid(struct device *dev, u32 req_id) 54 { return req_id; } 55 static inline struct irq_domain *iort_get_device_domain(struct device *dev, 56 u32 req_id) 57 { return NULL; } 58 static inline void acpi_configure_pmsi_domain(struct device *dev) { } 59 /* IOMMU interface */ 60 static inline void iort_dma_setup(struct device *dev, u64 *dma_addr, 61 u64 *size) { } 62 static inline const struct iommu_ops *iort_iommu_configure( 63 struct device *dev) 64 { return NULL; } 65 static inline 66 int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head) 67 { return 0; } 68 #endif 69 70 #endif /* __ACPI_IORT_H__ */ 71