1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) 2013 Advanced Micro Devices, Inc. 4 * 5 * Author: Steven Kinney <Steven.Kinney@amd.com> 6 * Author: Suravee Suthikulpanit <Suraveee.Suthikulpanit@amd.com> 7 */ 8 9 #ifndef _PERF_EVENT_AMD_IOMMU_H_ 10 #define _PERF_EVENT_AMD_IOMMU_H_ 11 12 /* iommu pc mmio region register indexes */ 13 #define IOMMU_PC_COUNTER_REG 0x00 14 #define IOMMU_PC_COUNTER_SRC_REG 0x08 15 #define IOMMU_PC_PASID_MATCH_REG 0x10 16 #define IOMMU_PC_DOMID_MATCH_REG 0x18 17 #define IOMMU_PC_DEVID_MATCH_REG 0x20 18 #define IOMMU_PC_COUNTER_REPORT_REG 0x28 19 20 /* maximun specified bank/counters */ 21 #define PC_MAX_SPEC_BNKS 64 22 #define PC_MAX_SPEC_CNTRS 16 23 24 struct amd_iommu; 25 26 /* amd_iommu_init.c external support functions */ 27 extern int amd_iommu_get_num_iommus(void); 28 29 extern bool amd_iommu_pc_supported(void); 30 31 extern u8 amd_iommu_pc_get_max_banks(unsigned int idx); 32 33 extern u8 amd_iommu_pc_get_max_counters(unsigned int idx); 34 35 extern int amd_iommu_pc_set_reg(struct amd_iommu *iommu, u8 bank, u8 cntr, 36 u8 fxn, u64 *value); 37 38 extern int amd_iommu_pc_get_reg(struct amd_iommu *iommu, u8 bank, u8 cntr, 39 u8 fxn, u64 *value); 40 41 extern struct amd_iommu *get_amd_iommu(int idx); 42 43 #endif /*_PERF_EVENT_AMD_IOMMU_H_*/ 44