1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2026, Netflix, Inc. 5 * 6 * This software was developed by Ali Mashtizadeh under the sponsorship from 7 * Netflix, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 */ 31 32 #ifndef __HEADERS_HH__ 33 #define __HEADERS_HH__ 34 35 #define PMC_HEADER_MAGIC 0x504D434C 36 #define PMC_HEADER_VERSION 0x00 37 38 #define PMC_ARCH_AMD64 0x01 39 #define PMC_ARCH_ARM64 0x02 40 #define PMC_ARCH_PPC64 0x03 41 #define PMC_ARCH_RISCV64 0x04 42 #define PMC_ARCH_ARM 0x05 43 44 struct pmchdr_header 45 { 46 uint32_t magic; 47 uint16_t version; 48 uint16_t arch; 49 }; 50 51 #define INFOHDR_TYPE_DONE 0x00 52 #define INFOHDR_TYPE_SYSINFO 0x01 53 #define INFOHDR_TYPE_PMCINFO 0x02 54 #define INFOHDR_TYPE_CPUID 0x03 55 56 struct pmchdr_infohdr 57 { 58 uint8_t type; 59 uint8_t reserved0; 60 uint16_t length; 61 uint32_t _reserved1; 62 }; 63 64 struct pmchdr_sysinfo 65 { 66 char cpumodel[64]; 67 char osrelease[64]; 68 char buildid[64]; 69 }; 70 71 struct pmchdr_pmcinfo 72 { 73 uint64_t rate; 74 char pmc[]; 75 }; 76 77 struct pmchdr_cpuidinfo 78 { 79 uint32_t cpuid[]; 80 }; 81 82 #endif 83 84