summaryrefslogtreecommitdiffstats
path: root/src/vppinfra/cpu.c
blob: a26d5c9ae1069984860788c284ddb251e9a985a1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
/*
 * Copyright (c) 2016 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#include <vppinfra/clib.h>
#include <vppinfra/format.h>
#include <vppinfra/cpu.h>

#define foreach_x86_cpu_uarch \
 _(0x06, 0x4f, "Broadwell", "Broadwell-EP/EX") \
 _(0x06, 0x3d, "Broadwell", "Broadwell") \
 _(0x06, 0x3f, "Haswell", "Haswell-E") \
 _(0x06, 0x3c, "Haswell", "Haswell") \
 _(0x06, 0x3e, "IvyBridge", "IvyBridge-E/EN/EP") \
 _(0x06, 0x3a, "IvyBridge", "IvyBridge") \
 _(0x06, 0x2a, "SandyBridge", "SandyBridge") \
 _(0x06, 0x2d, "SandyBridge", "SandyBridge-E/EN/EP") \
 _(0x06, 0x25, "Westmere", "Arrandale,Clarksdale") \
 _(0x06, 0x2c, "Westmere", "Westmere-EP/EX,Gulftown") \
 _(0x06, 0x2f, "Westmere", "Westmere-EX") \
 _(0x06, 0x1e, "Nehalem", "Clarksfield,Lynnfield,Jasper Forest") \
 _(0x06, 0x1a, "Nehalem", "Nehalem-EP,Bloomfield)") \
 _(0x06, 0x2e, "Nehalem", "Nehalem-EX") \
 _(0x06, 0x17, "Penryn", "Yorkfield,Wolfdale,Penryn,Harpertown (DP)") \
 _(0x06, 0x1d, "Penryn", "Dunnington (MP)") \
 _(0x06, 0x37, "Atom", "Bay Trail") \
 _(0x06, 0x36, "Atom", "Cedarview") \
 _(0x06, 0x26, "Atom", "Lincroft") \
 _(0x06, 0x1c, "Atom", "Pineview/Silverthorne")

u8 *
format_cpu_uarch (u8 * s, va_list * args)
{
#if __x86_64__
  u32 __attribute__ ((unused)) eax, ebx, ecx, edx;
  u8 model, family;

  if (__get_cpuid (1, &eax, &ebx, &ecx, &edx) == 0)
    return format (s, "unknown (missing cpuid)");

  model = ((eax >> 4) & 0x0f) | ((eax >> 12) & 0xf0);
  family = (eax >> 8) & 0x0f;

#define _(f,m,a,c) if ((model == m) && (family == f)) return format(s, "%s (%s)", a, c);
  foreach_x86_cpu_uarch
#undef _
    return format (s, "unknown (family 0x%02x model 0x%02x)", family, model);

#else /* ! __x86_64__ */
  return format (s, "unknown");
#endif
}

u8 *
format_cpu_model_name (u8 * s, va_list * args)
{
#if __x86_64__
  u32 __attribute__ ((unused)) eax, ebx, ecx, edx;
  u8 *name = 0;
  u32 *name_u32;

  if (__get_cpuid (1, &eax, &ebx, &ecx, &edx) == 0)
    return format (s, "unknown (missing cpuid)");

  __get_cpuid (0x80000000, &eax, &ebx, &ecx, &edx);
  if (eax < 0x80000004)
    return format (s, "unknown (missing ext feature)");

  vec_validate (name, 48);
  name_u32 = (u32 *) name;

  __get_cpuid (0x80000002, &eax, &ebx, &ecx, &edx);
  name_u32[0] = eax;
  name_u32[1] = ebx;
  name_u32[2] = ecx;
  name_u32[3] = edx;

  __get_cpuid (0x80000003, &eax, &ebx, &ecx, &edx);
  name_u32[4] = eax;
  name_u32[5] = ebx;
  name_u32[6] = ecx;
  name_u32[7] = edx;

  __get_cpuid (0x80000004, &eax, &ebx, &ecx, &edx);
  name_u32[8] = eax;
  name_u32[9] = ebx;
  name_u32[10] = ecx;
  name_u32[11] = edx;

  s = format (s, "%s", name);
  vec_free (name);
  return s;

#elif defined(__aarch64__)
  return format (s, "armv8");
#else /* ! __x86_64__ */
  return format (s, "unknown");
#endif
}

u8 *
format_cpu_flags (u8 * s, va_list * args)
{
#if defined(__x86_64__)
#define _(flag, func, reg, bit) \
  if (clib_cpu_supports_ ## flag()) \
    s = format (s, #flag " ");
  foreach_x86_64_flags return s;
#undef _
#else /* ! __x86_64__ */
  return format (s, "unknown");
#endif
}



/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */