FD.io VPP  v17.07.01-10-g3be13f0
Vector Packet Processing
cpu.c
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1 /*
2  * Copyright (c) 2016 Cisco and/or its affiliates.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 #include <vppinfra/clib.h>
16 #include <vppinfra/format.h>
17 #include <vppinfra/cpu.h>
18 
19 #define foreach_x86_cpu_uarch \
20  _(0x06, 0x4f, "Broadwell", "Broadwell-EP/EX") \
21  _(0x06, 0x3d, "Broadwell", "Broadwell") \
22  _(0x06, 0x3f, "Haswell", "Haswell-E") \
23  _(0x06, 0x3c, "Haswell", "Haswell") \
24  _(0x06, 0x3e, "IvyBridge", "IvyBridge-E/EN/EP") \
25  _(0x06, 0x3a, "IvyBridge", "IvyBridge") \
26  _(0x06, 0x2a, "SandyBridge", "SandyBridge") \
27  _(0x06, 0x2d, "SandyBridge", "SandyBridge-E/EN/EP") \
28  _(0x06, 0x25, "Westmere", "Arrandale,Clarksdale") \
29  _(0x06, 0x2c, "Westmere", "Westmere-EP/EX,Gulftown") \
30  _(0x06, 0x2f, "Westmere", "Westmere-EX") \
31  _(0x06, 0x1e, "Nehalem", "Clarksfield,Lynnfield,Jasper Forest") \
32  _(0x06, 0x1a, "Nehalem", "Nehalem-EP,Bloomfield)") \
33  _(0x06, 0x2e, "Nehalem", "Nehalem-EX") \
34  _(0x06, 0x17, "Penryn", "Yorkfield,Wolfdale,Penryn,Harpertown (DP)") \
35  _(0x06, 0x1d, "Penryn", "Dunnington (MP)") \
36  _(0x06, 0x37, "Atom", "Bay Trail") \
37  _(0x06, 0x36, "Atom", "Cedarview") \
38  _(0x06, 0x26, "Atom", "Lincroft") \
39  _(0x06, 0x1c, "Atom", "Pineview/Silverthorne")
40 
41 u8 *
42 format_cpu_uarch (u8 * s, va_list * args)
43 {
44 #if __x86_64__
45  u32 __attribute__ ((unused)) eax, ebx, ecx, edx;
46  u8 model, family;
47 
48  if (__get_cpuid (1, &eax, &ebx, &ecx, &edx) == 0)
49  return format (s, "unknown (missing cpuid)");
50 
51  model = ((eax >> 4) & 0x0f) | ((eax >> 12) & 0xf0);
52  family = (eax >> 8) & 0x0f;
53 
54 #define _(f,m,a,c) if ((model == m) && (family == f)) return format(s, "%s (%s)", a, c);
56 #undef _
57  return format (s, "unknown (family 0x%02x model 0x%02x)", family, model);
58 
59 #else /* ! __x86_64__ */
60  return format (s, "unknown");
61 #endif
62 }
63 
64 u8 *
65 format_cpu_model_name (u8 * s, va_list * args)
66 {
67 #if __x86_64__
68  u32 __attribute__ ((unused)) eax, ebx, ecx, edx;
69  u8 *name = 0;
70  u32 *name_u32;
71 
72  if (__get_cpuid (1, &eax, &ebx, &ecx, &edx) == 0)
73  return format (s, "unknown (missing cpuid)");
74 
75  __get_cpuid (0x80000000, &eax, &ebx, &ecx, &edx);
76  if (eax < 0x80000004)
77  return format (s, "unknown (missing ext feature)");
78 
79  vec_validate (name, 48);
80  name_u32 = (u32 *) name;
81 
82  __get_cpuid (0x80000002, &eax, &ebx, &ecx, &edx);
83  name_u32[0] = eax;
84  name_u32[1] = ebx;
85  name_u32[2] = ecx;
86  name_u32[3] = edx;
87 
88  __get_cpuid (0x80000003, &eax, &ebx, &ecx, &edx);
89  name_u32[4] = eax;
90  name_u32[5] = ebx;
91  name_u32[6] = ecx;
92  name_u32[7] = edx;
93 
94  __get_cpuid (0x80000004, &eax, &ebx, &ecx, &edx);
95  name_u32[8] = eax;
96  name_u32[9] = ebx;
97  name_u32[10] = ecx;
98  name_u32[11] = edx;
99 
100  s = format (s, "%s", name);
101  vec_free (name);
102  return s;
103 
104 #elif defined(__aarch64__)
105  return format (s, "armv8");
106 #else /* ! __x86_64__ */
107  return format (s, "unknown");
108 #endif
109 }
110 
111 u8 *
112 format_cpu_flags (u8 * s, va_list * args)
113 {
114 #if defined(__x86_64__)
115 #define _(flag, func, reg, bit) \
116  if (clib_cpu_supports_ ## flag()) \
117  s = format (s, #flag " ");
118  foreach_x86_64_flags return s;
119 #undef _
120 #else /* ! __x86_64__ */
121  return format (s, "unknown");
122 #endif
123 }
124 
125 
126 
127 /*
128  * fd.io coding-style-patch-verification: ON
129  *
130  * Local Variables:
131  * eval: (c-set-style "gnu")
132  * End:
133  */
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:436
u8 * format_cpu_uarch(u8 *s, va_list *args)
Definition: cpu.c:42
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
u8 * format_cpu_model_name(u8 *s, va_list *args)
Definition: cpu.c:65
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:340
u8 * format_cpu_flags(u8 *s, va_list *args)
Definition: cpu.c:112
#define foreach_x86_64_flags
Definition: cpu.h:55
#define foreach_x86_cpu_uarch
Definition: cpu.c:19
unsigned int u32
Definition: types.h:88
unsigned char u8
Definition: types.h:56