/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2013 Advanced Micro Devices, Inc. * * Author: Steven Kinney <Steven.Kinney@amd.com> * Author: Suravee Suthikulpanit <Suraveee.Suthikulpanit@amd.com> */ #ifndef _PERF_EVENT_AMD_IOMMU_H_ #define _PERF_EVENT_AMD_IOMMU_H_ /* iommu pc mmio region register indexes */ #define IOMMU_PC_COUNTER_REG 0x00 #define IOMMU_PC_COUNTER_SRC_REG 0x08 #define IOMMU_PC_PASID_MATCH_REG 0x10 #define IOMMU_PC_DOMID_MATCH_REG 0x18 #define IOMMU_PC_DEVID_MATCH_REG 0x20 #define IOMMU_PC_COUNTER_REPORT_REG 0x28 /* maximun specified bank/counters */ #define PC_MAX_SPEC_BNKS 64 #define PC_MAX_SPEC_CNTRS 16 struct amd_iommu; /* amd_iommu_init.c external support functions */ extern int amd_iommu_get_num_iommus(void); extern bool amd_iommu_pc_supported(void); extern u8 amd_iommu_pc_get_max_banks(unsigned int idx); extern u8 amd_iommu_pc_get_max_counters(unsigned int idx); extern int amd_iommu_pc_set_reg(struct amd_iommu *iommu, u8 bank, u8 cntr, u8 fxn, u64 *value); extern int amd_iommu_pc_get_reg(struct amd_iommu *iommu, u8 bank, u8 cntr, u8 fxn, u64 *value); extern struct amd_iommu *get_amd_iommu(int idx); #endif /*_PERF_EVENT_AMD_IOMMU_H_*/