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diff --git a/arch/x86/events/amd/iommu.h b/arch/x86/events/amd/iommu.h
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+/* 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
+
+#endif /*_PERF_EVENT_AMD_IOMMU_H_*/