1 /* 2 * Copyright (C) 2013 Advanced Micro Devices, Inc. 3 * 4 * Author: Steven Kinney <Steven.Kinney@amd.com> 5 * Author: Suravee Suthikulpanit <Suraveee.Suthikulpanit@amd.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 12 #ifndef _PERF_EVENT_AMD_IOMMU_H_ 13 #define _PERF_EVENT_AMD_IOMMU_H_ 14 15 /* iommu pc mmio region register indexes */ 16 #define IOMMU_PC_COUNTER_REG 0x00 17 #define IOMMU_PC_COUNTER_SRC_REG 0x08 18 #define IOMMU_PC_PASID_MATCH_REG 0x10 19 #define IOMMU_PC_DOMID_MATCH_REG 0x18 20 #define IOMMU_PC_DEVID_MATCH_REG 0x20 21 #define IOMMU_PC_COUNTER_REPORT_REG 0x28 22 23 /* maximun specified bank/counters */ 24 #define PC_MAX_SPEC_BNKS 64 25 #define PC_MAX_SPEC_CNTRS 16 26 27 struct amd_iommu; 28 29 /* amd_iommu_init.c external support functions */ 30 extern int amd_iommu_get_num_iommus(void); 31 32 extern bool amd_iommu_pc_supported(void); 33 34 extern u8 amd_iommu_pc_get_max_banks(unsigned int idx); 35 36 extern u8 amd_iommu_pc_get_max_counters(unsigned int idx); 37 38 extern int amd_iommu_pc_set_reg(struct amd_iommu *iommu, u8 bank, u8 cntr, 39 u8 fxn, u64 *value); 40 41 extern int amd_iommu_pc_get_reg(struct amd_iommu *iommu, u8 bank, u8 cntr, 42 u8 fxn, u64 *value); 43 44 extern struct amd_iommu *get_amd_iommu(int idx); 45 46 #endif /*_PERF_EVENT_AMD_IOMMU_H_*/ 47