tests/test-x86-cpuid.c

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