FD.io VPP  v18.01.2-1-g9b554f3
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, 0x9e, "Kaby Lake", "Kaby Lake DT/H/S/X") \
21  _(0x06, 0x8e, "Kaby Lake", "Kaby Lake Y/U") \
22  _(0x06, 0x85, "Knights Mill", "Knights Mill") \
23  _(0x06, 0x5f, "Goldmont", "Denverton") \
24  _(0x06, 0x5e, "Skylake", "Skylake DT/H/S") \
25  _(0x06, 0x5c, "Goldmont", "Apollo Lake") \
26  _(0x06, 0x5a, "Silvermont", "Moorefield") \
27  _(0x06, 0x57, "Knights Landing", "Knights Landing") \
28  _(0x06, 0x56, "Broadwell", "Broadwell DE") \
29  _(0x06, 0x55, "Skylake", "Skylake X/SP") \
30  _(0x06, 0x4f, "Broadwell", "Broadwell EP/EX") \
31  _(0x06, 0x4e, "Skylake", "Skylake Y/U") \
32  _(0x06, 0x4d, "Silvermont", "Rangeley") \
33  _(0x06, 0x4c, "Airmont", "Braswell") \
34  _(0x06, 0x47, "Broadwell", "Broadwell H") \
35  _(0x06, 0x46, "Haswell", "Crystalwell") \
36  _(0x06, 0x45, "Haswell", "Haswell ULT") \
37  _(0x06, 0x3f, "Haswell", "Haswell E") \
38  _(0x06, 0x3e, "Ivy Bridge", "Ivy Bridge E/EN/EP") \
39  _(0x06, 0x3d, "Broadwell", "Broadwell U") \
40  _(0x06, 0x3c, "Haswell", "Haswell") \
41  _(0x06, 0x3a, "Ivy Bridge", "IvyBridge") \
42  _(0x06, 0x37, "Silvermont", "BayTrail") \
43  _(0x06, 0x36, "Saltwell", "Cedarview,Centerton") \
44  _(0x06, 0x35, "Saltwell", "Cloverview") \
45  _(0x06, 0x2f, "Westmere", "Westmere EX") \
46  _(0x06, 0x2e, "Nehalem", "Nehalem EX") \
47  _(0x06, 0x2d, "Sandy Bridge", "SandyBridge E/EN/EP") \
48  _(0x06, 0x2c, "Westmere", "Westmere EP/EX,Gulftown") \
49  _(0x06, 0x2a, "Sandy Bridge", "Sandy Bridge") \
50  _(0x06, 0x27, "Saltwell", "Medfield") \
51  _(0x06, 0x26, "Bonnell", "Tunnel Creek") \
52  _(0x06, 0x25, "Westmere", "Arrandale,Clarksdale") \
53  _(0x06, 0x1e, "Nehalem", "Clarksfield,Lynnfield,Jasper Forest") \
54  _(0x06, 0x1d, "Penryn", "Dunnington") \
55  _(0x06, 0x1c, "Bonnell", "Pineview,Silverthorne") \
56  _(0x06, 0x1a, "Nehalem", "Nehalem EP,Bloomfield)") \
57  _(0x06, 0x17, "Penryn", "Yorkfield,Wolfdale,Penryn,Harpertown")
58 
59 u8 *
60 format_cpu_uarch (u8 * s, va_list * args)
61 {
62 #if __x86_64__
63  u32 __attribute__ ((unused)) eax, ebx, ecx, edx;
64  u8 model, family;
65 
66  if (__get_cpuid (1, &eax, &ebx, &ecx, &edx) == 0)
67  return format (s, "unknown (missing cpuid)");
68 
69  model = ((eax >> 4) & 0x0f) | ((eax >> 12) & 0xf0);
70  family = (eax >> 8) & 0x0f;
71 
72 #define _(f,m,a,c) if ((model == m) && (family == f)) return format(s, "%s (%s)", a, c);
74 #undef _
75  return format (s, "unknown (family 0x%02x model 0x%02x)", family, model);
76 
77 #else /* ! __x86_64__ */
78  return format (s, "unknown");
79 #endif
80 }
81 
82 u8 *
83 format_cpu_model_name (u8 * s, va_list * args)
84 {
85 #if __x86_64__
86  u32 __attribute__ ((unused)) eax, ebx, ecx, edx;
87  u8 *name = 0;
88  u32 *name_u32;
89 
90  if (__get_cpuid (1, &eax, &ebx, &ecx, &edx) == 0)
91  return format (s, "unknown (missing cpuid)");
92 
93  __get_cpuid (0x80000000, &eax, &ebx, &ecx, &edx);
94  if (eax < 0x80000004)
95  return format (s, "unknown (missing ext feature)");
96 
97  vec_validate (name, 48);
98  name_u32 = (u32 *) name;
99 
100  __get_cpuid (0x80000002, &eax, &ebx, &ecx, &edx);
101  name_u32[0] = eax;
102  name_u32[1] = ebx;
103  name_u32[2] = ecx;
104  name_u32[3] = edx;
105 
106  __get_cpuid (0x80000003, &eax, &ebx, &ecx, &edx);
107  name_u32[4] = eax;
108  name_u32[5] = ebx;
109  name_u32[6] = ecx;
110  name_u32[7] = edx;
111 
112  __get_cpuid (0x80000004, &eax, &ebx, &ecx, &edx);
113  name_u32[8] = eax;
114  name_u32[9] = ebx;
115  name_u32[10] = ecx;
116  name_u32[11] = edx;
117 
118  s = format (s, "%s", name);
119  vec_free (name);
120  return s;
121 
122 #elif defined(__aarch64__)
123  return format (s, "armv8");
124 #else /* ! __x86_64__ */
125  return format (s, "unknown");
126 #endif
127 }
128 
129 
130 static inline char const *
131 flag_skip_prefix (char const *flag)
132 {
133  if (memcmp (flag, "x86_", sizeof ("x86_") - 1) == 0)
134  return flag + sizeof ("x86_") - 1;
135  if (memcmp (flag, "aarch64_", sizeof ("aarch64_") - 1) == 0)
136  return flag + sizeof ("aarch64_") - 1;
137  return flag;
138 }
139 
140 u8 *
141 format_cpu_flags (u8 * s, va_list * args)
142 {
143 #if defined(__x86_64__)
144 #define _(flag, func, reg, bit) \
145  if (clib_cpu_supports_ ## flag()) \
146  s = format (s, "%s ", flag_skip_prefix(#flag));
147  foreach_x86_64_flags return s;
148 #undef _
149 #elif defined(__aarch64__)
150 #define _(flag, bit) \
151  if (clib_cpu_supports_ ## flag()) \
152  s = format (s, "%s ", flag_skip_prefix(#flag));
153  foreach_aarch64_flags return s;
154 #undef _
155 #else /* ! ! __x86_64__ && ! __aarch64__ */
156  return format (s, "unknown");
157 #endif
158 }
159 
160 
161 
162 /*
163  * fd.io coding-style-patch-verification: ON
164  *
165  * Local Variables:
166  * eval: (c-set-style "gnu")
167  * End:
168  */
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:432
static char const * flag_skip_prefix(char const *flag)
Definition: cpu.c:131
u8 * format_cpu_uarch(u8 *s, va_list *args)
Definition: cpu.c:60
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
#define foreach_aarch64_flags
Definition: cpu.h:75
u8 * format_cpu_model_name(u8 *s, va_list *args)
Definition: cpu.c:83
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:336
u8 * format_cpu_flags(u8 *s, va_list *args)
Definition: cpu.c:141
#define foreach_x86_64_flags
Definition: cpu.h:62
#define foreach_x86_cpu_uarch
Definition: cpu.c:19
unsigned int u32
Definition: types.h:88
unsigned char u8
Definition: types.h:56