diff options
Diffstat (limited to 'arch/x86/events/amd/iommu.h')
| -rw-r--r-- | arch/x86/events/amd/iommu.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/x86/events/amd/iommu.h b/arch/x86/events/amd/iommu.h new file mode 100644 index 000000000..0e5c036fd --- /dev/null +++ b/arch/x86/events/amd/iommu.h @@ -0,0 +1,43 @@ +/* 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 + +/* maximun 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_*/ |