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/* iommu pc reg masks*/ 28#define IOMMU_BASE_DEVID 0x0000 29 30/* amd_iommu_init.c external support functions */ 31extern bool amd_iommu_pc_supported(void); 32 33extern u8 amd_iommu_pc_get_max_banks(u16 devid); 34 35extern u8 amd_iommu_pc_get_max_counters(u16 devid); 36 37extern int amd_iommu_pc_get_set_reg_val(u16 devid, u8 bank, u8 cntr, 38 u8 fxn, u64 *value, bool is_write); 39 40#endif /*_PERF_EVENT_AMD_IOMMU_H_*/ 41