1 /* 2 * Test code for x86 APIC ID and Topology functions 3 * 4 * Copyright (c) 2012 Red Hat Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to deal 8 * in the Software without restriction, including without limitation the rights 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 * copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 22 * THE SOFTWARE. 23 */ 24 25 #include "qemu/osdep.h" 26 27 #include "hw/i386/topology.h" 28 29 static void test_topo_bits(void) 30 { 31 X86CPUTopoInfo topo_info = {0}; 32 33 /* 34 * simple tests for 1 thread per core, 1 core per module, 35 * 1 module per die, 1 die per package 36 */ 37 topo_info = (X86CPUTopoInfo) {1, 1, 1, 1}; 38 g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 0); 39 g_assert_cmpuint(apicid_core_width(&topo_info), ==, 0); 40 g_assert_cmpuint(apicid_die_width(&topo_info), ==, 0); 41 42 topo_info = (X86CPUTopoInfo) {1, 1, 1, 1}; 43 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 0), ==, 0); 44 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1), ==, 1); 45 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2), ==, 2); 46 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 3), ==, 3); 47 48 49 /* Test field width calculation for multiple values 50 */ 51 topo_info = (X86CPUTopoInfo) {1, 1, 1, 2}; 52 g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 1); 53 topo_info = (X86CPUTopoInfo) {1, 1, 1, 3}; 54 g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 2); 55 topo_info = (X86CPUTopoInfo) {1, 1, 1, 4}; 56 g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 2); 57 58 topo_info = (X86CPUTopoInfo) {1, 1, 1, 14}; 59 g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 4); 60 topo_info = (X86CPUTopoInfo) {1, 1, 1, 15}; 61 g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 4); 62 topo_info = (X86CPUTopoInfo) {1, 1, 1, 16}; 63 g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 4); 64 topo_info = (X86CPUTopoInfo) {1, 1, 1, 17}; 65 g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 5); 66 67 68 topo_info = (X86CPUTopoInfo) {1, 1, 30, 2}; 69 g_assert_cmpuint(apicid_core_width(&topo_info), ==, 5); 70 topo_info = (X86CPUTopoInfo) {1, 1, 31, 2}; 71 g_assert_cmpuint(apicid_core_width(&topo_info), ==, 5); 72 topo_info = (X86CPUTopoInfo) {1, 1, 32, 2}; 73 g_assert_cmpuint(apicid_core_width(&topo_info), ==, 5); 74 topo_info = (X86CPUTopoInfo) {1, 1, 33, 2}; 75 g_assert_cmpuint(apicid_core_width(&topo_info), ==, 6); 76 77 topo_info = (X86CPUTopoInfo) {1, 1, 30, 2}; 78 g_assert_cmpuint(apicid_die_width(&topo_info), ==, 0); 79 topo_info = (X86CPUTopoInfo) {2, 1, 30, 2}; 80 g_assert_cmpuint(apicid_die_width(&topo_info), ==, 1); 81 topo_info = (X86CPUTopoInfo) {3, 1, 30, 2}; 82 g_assert_cmpuint(apicid_die_width(&topo_info), ==, 2); 83 topo_info = (X86CPUTopoInfo) {4, 1, 30, 2}; 84 g_assert_cmpuint(apicid_die_width(&topo_info), ==, 2); 85 86 /* build a weird topology and see if IDs are calculated correctly 87 */ 88 89 /* This will use 2 bits for thread ID and 3 bits for core ID 90 */ 91 topo_info = (X86CPUTopoInfo) {1, 1, 6, 3}; 92 g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 2); 93 g_assert_cmpuint(apicid_core_offset(&topo_info), ==, 2); 94 g_assert_cmpuint(apicid_die_offset(&topo_info), ==, 5); 95 g_assert_cmpuint(apicid_pkg_offset(&topo_info), ==, 5); 96 97 topo_info = (X86CPUTopoInfo) {1, 1, 6, 3}; 98 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 0), ==, 0); 99 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1), ==, 1); 100 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2), ==, 2); 101 102 topo_info = (X86CPUTopoInfo) {1, 1, 6, 3}; 103 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1 * 3 + 0), ==, 104 (1 << 2) | 0); 105 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1 * 3 + 1), ==, 106 (1 << 2) | 1); 107 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1 * 3 + 2), ==, 108 (1 << 2) | 2); 109 110 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2 * 3 + 0), ==, 111 (2 << 2) | 0); 112 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2 * 3 + 1), ==, 113 (2 << 2) | 1); 114 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2 * 3 + 2), ==, 115 (2 << 2) | 2); 116 117 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 5 * 3 + 0), ==, 118 (5 << 2) | 0); 119 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 5 * 3 + 1), ==, 120 (5 << 2) | 1); 121 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 5 * 3 + 2), ==, 122 (5 << 2) | 2); 123 124 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 125 1 * 6 * 3 + 0 * 3 + 0), ==, (1 << 5)); 126 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 127 1 * 6 * 3 + 1 * 3 + 1), ==, (1 << 5) | (1 << 2) | 1); 128 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 129 3 * 6 * 3 + 5 * 3 + 2), ==, (3 << 5) | (5 << 2) | 2); 130 } 131 132 int main(int argc, char **argv) 133 { 134 g_test_init(&argc, &argv, NULL); 135 136 g_test_add_func("/cpuid/topology/basic", test_topo_bits); 137 138 g_test_run(); 139 140 return 0; 141 } 142