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_*/