bsd/dev/i386/sysctl.c

   1 /*
   2  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 #include <string.h>
  25 #include <sys/param.h>
  26 #include <sys/kernel.h>
  27 #include <sys/sysctl.h>
  28 #include <i386/cpuid.h>
  29
  30 static int
  31 hw_cpu_sysctl SYSCTL_HANDLER_ARGS
  32 {
  33     __unused struct sysctl_oid *unused_oidp = oidp;
  34     i386_cpu_info_t *cpu_info = cpuid_info();
  35     void *ptr = (uint8_t *)cpu_info + (uint32_t)arg1;
  36     int value;
  37
  38     if (arg2 == -1) {
  39         ptr = *(char **)ptr;
  40         arg2 = 0;
  41     }
  42
  43     if (arg2 == 0 && ((char *)ptr)[0] == '\0') {
  44         return ENOENT;
  45     }
  46
  47     if (arg2 == sizeof(uint8_t)) {
  48         value = (uint32_t) *(uint8_t *)ptr;
  49         ptr = &value;
  50         arg2 = sizeof(uint32_t);
  51     }
  52     return SYSCTL_OUT(req, ptr, arg2 ? (size_t) arg2 : strlen((char *)ptr)+1);
  53 }
  54
  55 static int
  56 hw_cpu_features SYSCTL_HANDLER_ARGS
  57 {
  58     __unused struct sysctl_oid *unused_oidp = oidp;
  59     __unused void *unused_arg1 = arg1;
  60     __unused int unused_arg2 = arg2;
  61     char buf[256];
  62
  63     buf[0] = '\0';
  64     cpuid_get_feature_names(cpuid_features(), buf, sizeof(buf));
  65
  66     return SYSCTL_OUT(req, buf, strlen(buf) + 1);
  67 }
  68
  69 SYSCTL_NODE(_machdep, OID_AUTO, cpu, CTLFLAG_RW, 0,
  70         "CPU info");
  71
  72 SYSCTL_PROC(_machdep_cpu, OID_AUTO, vendor, CTLTYPE_STRING | CTLFLAG_RD,
  73             (void *)offsetof(i386_cpu_info_t, cpuid_vendor), 0,
  74             hw_cpu_sysctl, "A", "CPU vendor");
  75
  76 SYSCTL_PROC(_machdep_cpu, OID_AUTO, brand_string, CTLTYPE_STRING | CTLFLAG_RD,
  77             (void *)offsetof(i386_cpu_info_t, cpuid_brand_string), 0,
  78             hw_cpu_sysctl, "A", "CPU brand string");
  79
  80 SYSCTL_PROC(_machdep_cpu, OID_AUTO, model_string, CTLTYPE_STRING | CTLFLAG_RD,
  81             (void *)offsetof(i386_cpu_info_t, cpuid_model_string), -1,
  82             hw_cpu_sysctl, "A", "CPU model string");
  83
  84 SYSCTL_PROC(_machdep_cpu, OID_AUTO, value, CTLTYPE_INT | CTLFLAG_RD,
  85             (void *)offsetof(i386_cpu_info_t, cpuid_value), sizeof(uint32_t),
  86             hw_cpu_sysctl, "I", "CPU value");
  87
  88 SYSCTL_PROC(_machdep_cpu, OID_AUTO, family, CTLTYPE_INT | CTLFLAG_RD,
  89             (void *)offsetof(i386_cpu_info_t, cpuid_family), sizeof(uint8_t),
  90             hw_cpu_sysctl, "I", "CPU family");
  91
  92 SYSCTL_PROC(_machdep_cpu, OID_AUTO, model, CTLTYPE_INT | CTLFLAG_RD,
  93             (void *)offsetof(i386_cpu_info_t, cpuid_model), sizeof(uint8_t),
  94             hw_cpu_sysctl, "I", "CPU model");
  95
  96 SYSCTL_PROC(_machdep_cpu, OID_AUTO, extmodel, CTLTYPE_INT | CTLFLAG_RD,
  97             (void *)offsetof(i386_cpu_info_t, cpuid_extmodel), sizeof(uint8_t),
  98             hw_cpu_sysctl, "I", "CPU extended model");
  99
 100 SYSCTL_PROC(_machdep_cpu, OID_AUTO, extfamily, CTLTYPE_INT | CTLFLAG_RD,
 101             (void *)offsetof(i386_cpu_info_t, cpuid_extfamily), sizeof(uint8_t),
 102             hw_cpu_sysctl, "I", "CPU extended family");
 103
 104 SYSCTL_PROC(_machdep_cpu, OID_AUTO, stepping, CTLTYPE_INT | CTLFLAG_RD,
 105             (void *)offsetof(i386_cpu_info_t, cpuid_stepping), sizeof(uint8_t),
 106             hw_cpu_sysctl, "I", "CPU stepping");
 107
 108 SYSCTL_PROC(_machdep_cpu, OID_AUTO, feature_bits, CTLTYPE_INT | CTLFLAG_RD,
 109             (void *)offsetof(i386_cpu_info_t, cpuid_features), sizeof(uint32_t),
 110             hw_cpu_sysctl, "I", "CPU features");
 111
 112 SYSCTL_PROC(_machdep_cpu, OID_AUTO, signature, CTLTYPE_INT | CTLFLAG_RD,
 113             (void *)offsetof(i386_cpu_info_t, cpuid_signature), sizeof(uint32_t),
 114             hw_cpu_sysctl, "I", "CPU signature");
 115
 116 SYSCTL_PROC(_machdep_cpu, OID_AUTO, brand, CTLTYPE_INT | CTLFLAG_RD,
 117             (void *)offsetof(i386_cpu_info_t, cpuid_brand), sizeof(uint8_t),
 118             hw_cpu_sysctl, "I", "CPU brand");
 119
 120 SYSCTL_PROC(_machdep_cpu, OID_AUTO, features, CTLTYPE_STRING | CTLFLAG_RD,
 121             0, 0,
 122             hw_cpu_features, "A", "CPU feature names");
 123
 124
 125 struct sysctl_oid *machdep_sysctl_list[] =
 126 {
 127     &sysctl__machdep_cpu,
 128     &sysctl__machdep_cpu_vendor,
 129     &sysctl__machdep_cpu_brand_string,
 130     &sysctl__machdep_cpu_model_string,
 131     &sysctl__machdep_cpu_value,
 132     &sysctl__machdep_cpu_family,
 133     &sysctl__machdep_cpu_model,
 134     &sysctl__machdep_cpu_extmodel,
 135     &sysctl__machdep_cpu_extfamily,
 136     &sysctl__machdep_cpu_feature_bits,
 137     &sysctl__machdep_cpu_stepping,
 138     &sysctl__machdep_cpu_signature,
 139     &sysctl__machdep_cpu_brand,
 140     &sysctl__machdep_cpu_features,
 141     (struct sysctl_oid *) 0
 142 };
 143