FD.io VPP  v21.10.1-2-g0a485f517
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, 0x8c, "Tiger Lake", "Tiger Lake U") \
24  _(0x06, 0x86, "Tremont", "Elkhart Lake") \
25  _(0x06, 0x85, "Knights Mill", "Knights Mill") \
26  _(0x06, 0x7e, "Ice Lake", "Ice Lake U") \
27  _(0x06, 0x7d, "Ice Lake", "Ice Lake Y") \
28  _(0x06, 0x7a, "Goldmont Plus", "Gemini Lake") \
29  _(0x06, 0x6c, "Ice Lake", "Ice Lake SP") \
30  _(0x06, 0x6a, "Ice Lake", "Ice Lake DE") \
31  _(0x06, 0x66, "Cannon Lake", "Cannon Lake U") \
32  _(0x06, 0x5f, "Goldmont", "Denverton") \
33  _(0x06, 0x5e, "Skylake", "Skylake DT/H/S") \
34  _(0x06, 0x5c, "Goldmont", "Apollo Lake") \
35  _(0x06, 0x5a, "Silvermont", "Moorefield") \
36  _(0x06, 0x57, "Knights Landing", "Knights Landing") \
37  _(0x06, 0x56, "Broadwell", "Broadwell DE") \
38  _(0x06, 0x55, "Skylake", "Skylake X/SP") \
39  _(0x06, 0x4f, "Broadwell", "Broadwell EP/EX") \
40  _(0x06, 0x4e, "Skylake", "Skylake Y/U") \
41  _(0x06, 0x4d, "Silvermont", "Rangeley") \
42  _(0x06, 0x4c, "Airmont", "Braswell") \
43  _(0x06, 0x47, "Broadwell", "Broadwell H") \
44  _(0x06, 0x46, "Haswell", "Crystalwell") \
45  _(0x06, 0x45, "Haswell", "Haswell ULT") \
46  _(0x06, 0x3f, "Haswell", "Haswell E") \
47  _(0x06, 0x3e, "Ivy Bridge", "Ivy Bridge E/EN/EP") \
48  _(0x06, 0x3d, "Broadwell", "Broadwell U") \
49  _(0x06, 0x3c, "Haswell", "Haswell") \
50  _(0x06, 0x3a, "Ivy Bridge", "IvyBridge") \
51  _(0x06, 0x37, "Silvermont", "BayTrail") \
52  _(0x06, 0x36, "Saltwell", "Cedarview,Centerton") \
53  _(0x06, 0x35, "Saltwell", "Cloverview") \
54  _(0x06, 0x2f, "Westmere", "Westmere EX") \
55  _(0x06, 0x2e, "Nehalem", "Nehalem EX") \
56  _(0x06, 0x2d, "Sandy Bridge", "SandyBridge E/EN/EP") \
57  _(0x06, 0x2c, "Westmere", "Westmere EP/EX,Gulftown") \
58  _(0x06, 0x2a, "Sandy Bridge", "Sandy Bridge") \
59  _(0x06, 0x27, "Saltwell", "Medfield") \
60  _(0x06, 0x26, "Bonnell", "Tunnel Creek") \
61  _(0x06, 0x25, "Westmere", "Arrandale,Clarksdale") \
62  _(0x06, 0x1e, "Nehalem", "Clarksfield,Lynnfield,Jasper Forest") \
63  _(0x06, 0x1d, "Penryn", "Dunnington") \
64  _(0x06, 0x1c, "Bonnell", "Pineview,Silverthorne") \
65  _(0x06, 0x1a, "Nehalem", "Nehalem EP,Bloomfield)") \
66  _(0x06, 0x17, "Penryn", "Yorkfield,Wolfdale,Penryn,Harpertown")
67 
68 /* _(implementor-id, part-id, vendor-name, cpu-name, show CPU pass as string) */
69 #define foreach_aarch64_cpu_uarch \
70  _(0x41, 0xd03, "ARM", "Cortex-A53", 0) \
71  _(0x41, 0xd07, "ARM", "Cortex-A57", 0) \
72  _(0x41, 0xd08, "ARM", "Cortex-A72", 0) \
73  _(0x41, 0xd09, "ARM", "Cortex-A73", 0) \
74  _(0x41, 0xd0a, "ARM", "Cortex-A75", 0) \
75  _(0x41, 0xd0b, "ARM", "Cortex-A76", 0) \
76  _(0x41, 0xd0c, "ARM", "Neoverse-N1", 0) \
77  _(0x41, 0xd4a, "ARM", "Neoverse-E1", 0) \
78  _(0x43, 0x0a1, "Marvell", "THUNDERX CN88XX", 0) \
79  _(0x43, 0x0a2, "Marvell", "OCTEON TX CN81XX", 0) \
80  _(0x43, 0x0a3, "Marvell", "OCTEON TX CN83XX", 0) \
81  _(0x43, 0x0af, "Marvell", "THUNDERX2 CN99XX", 1) \
82  _(0x43, 0x0b1, "Marvell", "OCTEON TX2 CN98XX", 1) \
83  _(0x43, 0x0b2, "Marvell", "OCTEON TX2 CN96XX", 1)
84 
85 __clib_export u8 *
86 format_cpu_uarch (u8 * s, va_list * args)
87 {
88 #if __x86_64__
89  u32 __attribute__ ((unused)) eax, ebx, ecx, edx;
90  u8 model, family, stepping;
91 
92  if (__get_cpuid (1, &eax, &ebx, &ecx, &edx) == 0)
93  return format (s, "unknown (missing cpuid)");
94 
95  model = ((eax >> 4) & 0x0f) | ((eax >> 12) & 0xf0);
96  family = (eax >> 8) & 0x0f;
97  stepping = eax & 0x0f;
98 
99 #define _(f,m,a,c) if ((model == m) && (family == f)) return \
100 format(s, "[0x%x] %s ([0x%02x] %s) stepping 0x%x", f, a, m, c, stepping);
101  foreach_x86_cpu_uarch
102 #undef _
103  return format (s, "unknown (family 0x%02x model 0x%02x)", family, model);
104 
105 #elif __aarch64__
106  int fd;
107  unformat_input_t input;
108  u32 implementer, primary_part_number, variant, revision;
109 
110  fd = open ("/proc/cpuinfo", 0);
111  if (fd < 0)
112  return format (s, "unknown");
113 
114  unformat_init_clib_file (&input, fd);
115  while (unformat_check_input (&input) != UNFORMAT_END_OF_INPUT)
116  {
117  if (unformat (&input, "CPU implementer%_: 0x%x", &implementer))
118  ;
119  else if (unformat (&input, "CPU part%_: 0x%x", &primary_part_number))
120  ;
121  else if (unformat (&input, "CPU variant%_: 0x%x", &variant))
122  ;
123  else if (unformat (&input, "CPU revision%_: %u", &revision))
124  ;
125  else
126  unformat_skip_line (&input);
127  }
128  unformat_free (&input);
129  close (fd);
130 
131 #define _(i,p,a,c,_format) if ((implementer == i) && (primary_part_number == p)){ \
132  if (_format)\
133  return format(s, "%s (%s PASS %c%u)", a, c, 'A'+variant, revision);\
134  else {\
135  if (implementer == 0x43)\
136  variant++; \
137  return format (s, "%s (%s PASS %u.%u)", a, c, variant, revision);}}
138 
139  foreach_aarch64_cpu_uarch
140 #undef _
141  return format (s, "unknown (implementer 0x%02x part 0x%03x PASS %u.%u)",
142  implementer, primary_part_number, variant, revision);
143 
144 #else /* ! __x86_64__ */
145  return format (s, "unknown");
146 #endif
147 }
148 
149 __clib_export u8 *
150 format_cpu_model_name (u8 * s, va_list * args)
151 {
152 #if __x86_64__
153  u32 __attribute__ ((unused)) eax, ebx, ecx, edx;
154  u8 *name = 0;
155  u32 *name_u32;
156 
157  if (__get_cpuid (1, &eax, &ebx, &ecx, &edx) == 0)
158  return format (s, "unknown (missing cpuid)");
159 
160  __get_cpuid (0x80000000, &eax, &ebx, &ecx, &edx);
161  if (eax < 0x80000004)
162  return format (s, "unknown (missing ext feature)");
163 
164  vec_validate (name, 48);
165  name_u32 = (u32 *) name;
166 
167  __get_cpuid (0x80000002, &eax, &ebx, &ecx, &edx);
168  name_u32[0] = eax;
169  name_u32[1] = ebx;
170  name_u32[2] = ecx;
171  name_u32[3] = edx;
172 
173  __get_cpuid (0x80000003, &eax, &ebx, &ecx, &edx);
174  name_u32[4] = eax;
175  name_u32[5] = ebx;
176  name_u32[6] = ecx;
177  name_u32[7] = edx;
178 
179  __get_cpuid (0x80000004, &eax, &ebx, &ecx, &edx);
180  name_u32[8] = eax;
181  name_u32[9] = ebx;
182  name_u32[10] = ecx;
183  name_u32[11] = edx;
184 
185  s = format (s, "%s", name);
186  vec_free (name);
187  return s;
188 
189 #elif defined(__aarch64__)
190  return format (s, "armv8");
191 #else /* ! __x86_64__ */
192  return format (s, "unknown");
193 #endif
194 }
195 
196 
197 static inline char const *
198 flag_skip_prefix (char const *flag, const char *pfx, int len)
199 {
200  if (0 == strncmp (flag, pfx, len - 1))
201  return flag + len - 1;
202  return flag;
203 }
204 
205 __clib_export u8 *
206 format_cpu_flags (u8 * s, va_list * args)
207 {
208 #if defined(__x86_64__)
209 #define _(flag, func, reg, bit) \
210  if (clib_cpu_supports_ ## flag()) \
211  s = format (s, "%s ", flag_skip_prefix(#flag, "x86_", sizeof("x86_")));
212  foreach_x86_64_flags return s;
213 #undef _
214 #elif defined(__aarch64__)
215 #define _(flag, bit) \
216  if (clib_cpu_supports_ ## flag()) \
217  s = format (s, "%s ", flag_skip_prefix(#flag, "aarch64_", sizeof("aarch64_")));
218  foreach_aarch64_flags return s;
219 #undef _
220 #else /* ! ! __x86_64__ && ! __aarch64__ */
221  return format (s, "unknown");
222 #endif
223 }
224 
225 __clib_export u32
226 clib_get_current_cpu_id ()
227 {
228  unsigned cpu, node;
229  syscall (__NR_getcpu, &cpu, &node, 0);
230  return cpu;
231 }
232 
233 __clib_export u32
234 clib_get_current_numa_node ()
235 {
236  unsigned cpu, node;
237  syscall (__NR_getcpu, &cpu, &node, 0);
238  return node;
239 }
240 
241 __clib_export u8 *
242 format_march_variant (u8 *s, va_list *args)
243 {
244  clib_march_variant_type_t t = va_arg (*args, clib_march_variant_type_t);
245  char *variants[] = { [0] = "default",
246 #define _(s, n) [CLIB_MARCH_VARIANT_TYPE_##s] = n,
247  foreach_march_variant
248 #undef _
249  };
250  return format (s, "%s", variants[t]);
251 }
252 
253 /*
254  * fd.io coding-style-patch-verification: ON
255  *
256  * Local Variables:
257  * eval: (c-set-style "gnu")
258  * End:
259  */
unformat_init_clib_file
void unformat_init_clib_file(unformat_input_t *input, int file_descriptor)
Definition: unformat.c:1064
format_cpu_model_name
__clib_export u8 * format_cpu_model_name(u8 *s, va_list *args)
Definition: cpu.c:150
name
string name[64]
Definition: fib.api:25
clib.h
foreach_aarch64_cpu_uarch
#define foreach_aarch64_cpu_uarch
Definition: cpu.c:69
node
vlib_main_t vlib_node_runtime_t * node
Definition: nat44_ei.c:3047
foreach_x86_cpu_uarch
#define foreach_x86_cpu_uarch
Definition: cpu.c:20
clib_get_current_cpu_id
__clib_export u32 clib_get_current_cpu_id()
Definition: cpu.c:226
unformat_input_t
struct _unformat_input_t unformat_input_t
unformat
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:978
foreach_aarch64_flags
#define foreach_aarch64_flags
Definition: cpu.h:139
unformat_free
static void unformat_free(unformat_input_t *i)
Definition: format.h:155
len
u8 len
Definition: ip_types.api:103
unformat_check_input
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:163
vec_validate
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment)
Definition: vec.h:523
format.h
clib_get_current_numa_node
__clib_export u32 clib_get_current_numa_node()
Definition: cpu.c:234
format_cpu_uarch
__clib_export u8 * format_cpu_uarch(u8 *s, va_list *args)
Definition: cpu.c:86
cpu.h
vec_free
#define vec_free(V)
Free vector's memory (no header).
Definition: vec.h:395
clib_march_variant_type_t
clib_march_variant_type_t
Definition: cpu.h:39
format
description fragment has unexpected format
Definition: map.api:433
foreach_march_variant
#define foreach_march_variant
Definition: cpu.h:23
u32
unsigned int u32
Definition: types.h:88
foreach_x86_64_flags
#define foreach_x86_64_flags
Definition: cpu.h:114
unformat_skip_line
static void unformat_skip_line(unformat_input_t *i)
Definition: format.h:214
u8
unsigned char u8
Definition: types.h:56
flag_skip_prefix
static const char * flag_skip_prefix(char const *flag, const char *pfx, int len)
Definition: cpu.c:198
UNFORMAT_END_OF_INPUT
#define UNFORMAT_END_OF_INPUT
Definition: format.h:137
format_cpu_flags
__clib_export u8 * format_cpu_flags(u8 *s, va_list *args)
Definition: cpu.c:206
format_march_variant
__clib_export u8 * format_march_variant(u8 *s, va_list *args)
Definition: cpu.c:242