| /* 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 |
| |
| /* maximum 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_*/ |
