FD.io VPP  v19.08.3-2-gbabecb413
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 <fcntl.h>
16 #include <vppinfra/clib.h>
17 #include <vppinfra/format.h>
18 #include <vppinfra/cpu.h>
19 
20 #define foreach_x86_cpu_uarch \
21  _(0x06, 0x9e, "Kaby Lake", "Kaby Lake DT/H/S/X") \
22  _(0x06, 0x8e, "Kaby Lake", "Kaby Lake Y/U") \
23  _(0x06, 0x85, "Knights Mill", "Knights Mill") \
24  _(0x06, 0x5f, "Goldmont", "Denverton") \
25  _(0x06, 0x5e, "Skylake", "Skylake DT/H/S") \
26  _(0x06, 0x5c, "Goldmont", "Apollo Lake") \
27  _(0x06, 0x5a, "Silvermont", "Moorefield") \
28  _(0x06, 0x57, "Knights Landing", "Knights Landing") \
29  _(0x06, 0x56, "Broadwell", "Broadwell DE") \
30  _(0x06, 0x55, "Skylake", "Skylake X/SP") \
31  _(0x06, 0x4f, "Broadwell", "Broadwell EP/EX") \
32  _(0x06, 0x4e, "Skylake", "Skylake Y/U") \
33  _(0x06, 0x4d, "Silvermont", "Rangeley") \
34  _(0x06, 0x4c, "Airmont", "Braswell") \
35  _(0x06, 0x47, "Broadwell", "Broadwell H") \
36  _(0x06, 0x46, "Haswell", "Crystalwell") \
37  _(0x06, 0x45, "Haswell", "Haswell ULT") \
38  _(0x06, 0x3f, "Haswell", "Haswell E") \
39  _(0x06, 0x3e, "Ivy Bridge", "Ivy Bridge E/EN/EP") \
40  _(0x06, 0x3d, "Broadwell", "Broadwell U") \
41  _(0x06, 0x3c, "Haswell", "Haswell") \
42  _(0x06, 0x3a, "Ivy Bridge", "IvyBridge") \
43  _(0x06, 0x37, "Silvermont", "BayTrail") \
44  _(0x06, 0x36, "Saltwell", "Cedarview,Centerton") \
45  _(0x06, 0x35, "Saltwell", "Cloverview") \
46  _(0x06, 0x2f, "Westmere", "Westmere EX") \
47  _(0x06, 0x2e, "Nehalem", "Nehalem EX") \
48  _(0x06, 0x2d, "Sandy Bridge", "SandyBridge E/EN/EP") \
49  _(0x06, 0x2c, "Westmere", "Westmere EP/EX,Gulftown") \
50  _(0x06, 0x2a, "Sandy Bridge", "Sandy Bridge") \
51  _(0x06, 0x27, "Saltwell", "Medfield") \
52  _(0x06, 0x26, "Bonnell", "Tunnel Creek") \
53  _(0x06, 0x25, "Westmere", "Arrandale,Clarksdale") \
54  _(0x06, 0x1e, "Nehalem", "Clarksfield,Lynnfield,Jasper Forest") \
55  _(0x06, 0x1d, "Penryn", "Dunnington") \
56  _(0x06, 0x1c, "Bonnell", "Pineview,Silverthorne") \
57  _(0x06, 0x1a, "Nehalem", "Nehalem EP,Bloomfield)") \
58  _(0x06, 0x17, "Penryn", "Yorkfield,Wolfdale,Penryn,Harpertown")
59 
60 /* _(implementor-id, part-id, vendor-name, cpu-name, show CPU pass as string) */
61 #define foreach_aarch64_cpu_uarch \
62  _(0x41, 0xd03, "ARM", "Cortex-A53", 0) \
63  _(0x41, 0xd07, "ARM", "Cortex-A57", 0) \
64  _(0x41, 0xd08, "ARM", "Cortex-A72", 0) \
65  _(0x41, 0xd09, "ARM", "Cortex-A73", 0) \
66  _(0x43, 0x0a1, "Marvell", "THUNDERX CN88XX", 0) \
67  _(0x43, 0x0a2, "Marvell", "OCTEON TX CN81XX", 0) \
68  _(0x43, 0x0a3, "Marvell", "OCTEON TX CN83XX", 0) \
69  _(0x43, 0x0af, "Marvell", "THUNDERX2 CN99XX", 1) \
70  _(0x43, 0x0b1, "Marvell", "OCTEON TX2 CN98XX", 1) \
71  _(0x43, 0x0b2, "Marvell", "OCTEON TX2 CN96XX", 1)
72 
73 u8 *
74 format_cpu_uarch (u8 * s, va_list * args)
75 {
76 #if __x86_64__
77  u32 __attribute__ ((unused)) eax, ebx, ecx, edx;
78  u8 model, family, stepping;
79 
80  if (__get_cpuid (1, &eax, &ebx, &ecx, &edx) == 0)
81  return format (s, "unknown (missing cpuid)");
82 
83  model = ((eax >> 4) & 0x0f) | ((eax >> 12) & 0xf0);
84  family = (eax >> 8) & 0x0f;
85  stepping = eax & 0x0f;
86 
87 #define _(f,m,a,c) if ((model == m) && (family == f)) return \
88 format(s, "[0x%x] %s ([0x%02x] %s) stepping 0x%x", f, a, m, c, stepping);
90 #undef _
91  return format (s, "unknown (family 0x%02x model 0x%02x)", family, model);
92 
93 #elif __aarch64__
94  int fd;
95  unformat_input_t input;
96  u32 implementer, primary_part_number, variant, revision;
97 
98  fd = open ("/proc/cpuinfo", 0);
99  if (fd < 0)
100  return format (s, "unknown");
101 
102  unformat_init_clib_file (&input, fd);
103  while (unformat_check_input (&input) != UNFORMAT_END_OF_INPUT)
104  {
105  if (unformat (&input, "CPU implementer%_: 0x%x", &implementer))
106  ;
107  else if (unformat (&input, "CPU part%_: 0x%x", &primary_part_number))
108  ;
109  else if (unformat (&input, "CPU variant%_: 0x%x", &variant))
110  ;
111  else if (unformat (&input, "CPU revision%_: %u", &revision))
112  ;
113  else
114  unformat_skip_line (&input);
115  }
116  unformat_free (&input);
117  close (fd);
118 
119 #define _(i,p,a,c,_format) if ((implementer == i) && (primary_part_number == p)){ \
120  if (_format)\
121  return format(s, "%s (%s PASS %c%u)", a, c, 'A'+variant, revision);\
122  else {\
123  if (implementer == 0x43)\
124  variant++; \
125  return format (s, "%s (%s PASS %u.%u)", a, c, variant, revision);}}
126 
128 #undef _
129  return format (s, "unknown (implementer 0x%02x part 0x%03x PASS %u.%u)",
130  implementer, primary_part_number, variant, revision);
131 
132 #else /* ! __x86_64__ */
133  return format (s, "unknown");
134 #endif
135 }
136 
137 u8 *
138 format_cpu_model_name (u8 * s, va_list * args)
139 {
140 #if __x86_64__
141  u32 __attribute__ ((unused)) eax, ebx, ecx, edx;
142  u8 *name = 0;
143  u32 *name_u32;
144 
145  if (__get_cpuid (1, &eax, &ebx, &ecx, &edx) == 0)
146  return format (s, "unknown (missing cpuid)");
147 
148  __get_cpuid (0x80000000, &eax, &ebx, &ecx, &edx);
149  if (eax < 0x80000004)
150  return format (s, "unknown (missing ext feature)");
151 
152  vec_validate (name, 48);
153  name_u32 = (u32 *) name;
154 
155  __get_cpuid (0x80000002, &eax, &ebx, &ecx, &edx);
156  name_u32[0] = eax;
157  name_u32[1] = ebx;
158  name_u32[2] = ecx;
159  name_u32[3] = edx;
160 
161  __get_cpuid (0x80000003, &eax, &ebx, &ecx, &edx);
162  name_u32[4] = eax;
163  name_u32[5] = ebx;
164  name_u32[6] = ecx;
165  name_u32[7] = edx;
166 
167  __get_cpuid (0x80000004, &eax, &ebx, &ecx, &edx);
168  name_u32[8] = eax;
169  name_u32[9] = ebx;
170  name_u32[10] = ecx;
171  name_u32[11] = edx;
172 
173  s = format (s, "%s", name);
174  vec_free (name);
175  return s;
176 
177 #elif defined(__aarch64__)
178  return format (s, "armv8");
179 #else /* ! __x86_64__ */
180  return format (s, "unknown");
181 #endif
182 }
183 
184 
185 static inline char const *
186 flag_skip_prefix (char const *flag, const char *pfx, int len)
187 {
188  if (0 == strncmp (flag, pfx, len - 1))
189  return flag + len - 1;
190  return flag;
191 }
192 
193 u8 *
194 format_cpu_flags (u8 * s, va_list * args)
195 {
196 #if defined(__x86_64__)
197 #define _(flag, func, reg, bit) \
198  if (clib_cpu_supports_ ## flag()) \
199  s = format (s, "%s ", flag_skip_prefix(#flag, "x86_", sizeof("x86_")));
200  foreach_x86_64_flags return s;
201 #undef _
202 #elif defined(__aarch64__)
203 #define _(flag, bit) \
204  if (clib_cpu_supports_ ## flag()) \
205  s = format (s, "%s ", flag_skip_prefix(#flag, "aarch64_", sizeof("aarch64_")));
206  foreach_aarch64_flags return s;
207 #undef _
208 #else /* ! ! __x86_64__ && ! __aarch64__ */
209  return format (s, "unknown");
210 #endif
211 }
212 
213 
214 
215 /*
216  * fd.io coding-style-patch-verification: ON
217  *
218  * Local Variables:
219  * eval: (c-set-style "gnu")
220  * End:
221  */
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:439
u8 * format_cpu_uarch(u8 *s, va_list *args)
Definition: cpu.c:74
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:424
#define foreach_aarch64_flags
Definition: cpu.h:138
unsigned char u8
Definition: types.h:56
void unformat_init_clib_file(unformat_input_t *input, int file_descriptor)
Definition: unformat.c:1064
static void unformat_skip_line(unformat_input_t *i)
Definition: format.h:222
#define foreach_aarch64_cpu_uarch
Definition: cpu.c:61
unsigned int u32
Definition: types.h:88
u8 * format_cpu_model_name(u8 *s, va_list *args)
Definition: cpu.c:138
static char const * flag_skip_prefix(char const *flag, const char *pfx, int len)
Definition: cpu.c:186
struct _unformat_input_t unformat_input_t
u8 name[64]
Definition: memclnt.api:152
u8 len
Definition: ip_types.api:90
#define UNFORMAT_END_OF_INPUT
Definition: format.h:145
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:341
u8 * format_cpu_flags(u8 *s, va_list *args)
Definition: cpu.c:194
#define foreach_x86_64_flags
Definition: cpu.h:117
#define foreach_x86_cpu_uarch
Definition: cpu.c:20
static void unformat_free(unformat_input_t *i)
Definition: format.h:163
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:978
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:171