test-x86-cpuid.c (5827B)
1 /* 2 * Test code for x86 CPUID 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 /* simple tests for 1 thread per core, 1 core per die, 1 die per package */ 34 topo_info = (X86CPUTopoInfo) {1, 1, 1}; 35 g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 0); 36 g_assert_cmpuint(apicid_core_width(&topo_info), ==, 0); 37 g_assert_cmpuint(apicid_die_width(&topo_info), ==, 0); 38 39 topo_info = (X86CPUTopoInfo) {1, 1, 1}; 40 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 0), ==, 0); 41 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1), ==, 1); 42 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2), ==, 2); 43 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 3), ==, 3); 44 45 46 /* Test field width calculation for multiple values 47 */ 48 topo_info = (X86CPUTopoInfo) {1, 1, 2}; 49 g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 1); 50 topo_info = (X86CPUTopoInfo) {1, 1, 3}; 51 g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 2); 52 topo_info = (X86CPUTopoInfo) {1, 1, 4}; 53 g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 2); 54 55 topo_info = (X86CPUTopoInfo) {1, 1, 14}; 56 g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 4); 57 topo_info = (X86CPUTopoInfo) {1, 1, 15}; 58 g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 4); 59 topo_info = (X86CPUTopoInfo) {1, 1, 16}; 60 g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 4); 61 topo_info = (X86CPUTopoInfo) {1, 1, 17}; 62 g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 5); 63 64 65 topo_info = (X86CPUTopoInfo) {1, 30, 2}; 66 g_assert_cmpuint(apicid_core_width(&topo_info), ==, 5); 67 topo_info = (X86CPUTopoInfo) {1, 31, 2}; 68 g_assert_cmpuint(apicid_core_width(&topo_info), ==, 5); 69 topo_info = (X86CPUTopoInfo) {1, 32, 2}; 70 g_assert_cmpuint(apicid_core_width(&topo_info), ==, 5); 71 topo_info = (X86CPUTopoInfo) {1, 33, 2}; 72 g_assert_cmpuint(apicid_core_width(&topo_info), ==, 6); 73 74 topo_info = (X86CPUTopoInfo) {1, 30, 2}; 75 g_assert_cmpuint(apicid_die_width(&topo_info), ==, 0); 76 topo_info = (X86CPUTopoInfo) {2, 30, 2}; 77 g_assert_cmpuint(apicid_die_width(&topo_info), ==, 1); 78 topo_info = (X86CPUTopoInfo) {3, 30, 2}; 79 g_assert_cmpuint(apicid_die_width(&topo_info), ==, 2); 80 topo_info = (X86CPUTopoInfo) {4, 30, 2}; 81 g_assert_cmpuint(apicid_die_width(&topo_info), ==, 2); 82 83 /* build a weird topology and see if IDs are calculated correctly 84 */ 85 86 /* This will use 2 bits for thread ID and 3 bits for core ID 87 */ 88 topo_info = (X86CPUTopoInfo) {1, 6, 3}; 89 g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 2); 90 g_assert_cmpuint(apicid_core_offset(&topo_info), ==, 2); 91 g_assert_cmpuint(apicid_die_offset(&topo_info), ==, 5); 92 g_assert_cmpuint(apicid_pkg_offset(&topo_info), ==, 5); 93 94 topo_info = (X86CPUTopoInfo) {1, 6, 3}; 95 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 0), ==, 0); 96 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1), ==, 1); 97 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2), ==, 2); 98 99 topo_info = (X86CPUTopoInfo) {1, 6, 3}; 100 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1 * 3 + 0), ==, 101 (1 << 2) | 0); 102 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1 * 3 + 1), ==, 103 (1 << 2) | 1); 104 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1 * 3 + 2), ==, 105 (1 << 2) | 2); 106 107 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2 * 3 + 0), ==, 108 (2 << 2) | 0); 109 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2 * 3 + 1), ==, 110 (2 << 2) | 1); 111 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2 * 3 + 2), ==, 112 (2 << 2) | 2); 113 114 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 5 * 3 + 0), ==, 115 (5 << 2) | 0); 116 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 5 * 3 + 1), ==, 117 (5 << 2) | 1); 118 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 5 * 3 + 2), ==, 119 (5 << 2) | 2); 120 121 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 122 1 * 6 * 3 + 0 * 3 + 0), ==, (1 << 5)); 123 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 124 1 * 6 * 3 + 1 * 3 + 1), ==, (1 << 5) | (1 << 2) | 1); 125 g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 126 3 * 6 * 3 + 5 * 3 + 2), ==, (3 << 5) | (5 << 2) | 2); 127 } 128 129 int main(int argc, char **argv) 130 { 131 g_test_init(&argc, &argv, NULL); 132 133 g_test_add_func("/cpuid/topology/basic", test_topo_bits); 134 135 g_test_run(); 136 137 return 0; 138 }