Line data Source code
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 : /*
16 : * pci.c: Linux user space PCI bus management.
17 : *
18 : * Copyright (c) 2008 Eliot Dresselhaus
19 : *
20 : * Permission is hereby granted, free of charge, to any person obtaining
21 : * a copy of this software and associated documentation files (the
22 : * "Software"), to deal in the Software without restriction, including
23 : * without limitation the rights to use, copy, modify, merge, publish,
24 : * distribute, sublicense, and/or sell copies of the Software, and to
25 : * permit persons to whom the Software is furnished to do so, subject to
26 : * the following conditions:
27 : *
28 : * The above copyright notice and this permission notice shall be
29 : * included in all copies or substantial portions of the Software.
30 : *
31 : * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
32 : * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
33 : * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
34 : * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
35 : * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
36 : * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
37 : * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
38 : */
39 :
40 : #include <vlib/vlib.h>
41 : #include <vlib/pci/pci.h>
42 : #include <vlib/unix/unix.h>
43 :
44 : #include <sys/types.h>
45 : #include <sys/stat.h>
46 : #include <fcntl.h>
47 : #include <dirent.h>
48 : #include <sys/ioctl.h>
49 : #include <net/if.h>
50 : #include <linux/ethtool.h>
51 : #include <linux/sockios.h>
52 :
53 : vlib_pci_main_t pci_main;
54 :
55 : vlib_pci_device_info_t * __attribute__ ((weak))
56 0 : vlib_pci_get_device_info (vlib_main_t * vm, vlib_pci_addr_t * addr,
57 : clib_error_t ** error)
58 : {
59 0 : if (error)
60 0 : *error = clib_error_return (0, "unsupported");
61 0 : return 0;
62 : }
63 :
64 : clib_error_t *__attribute__ ((weak))
65 0 : vlib_pci_get_device_root_bus (vlib_pci_addr_t *addr, vlib_pci_addr_t *root_bus)
66 : {
67 0 : return 0;
68 : }
69 :
70 0 : vlib_pci_addr_t * __attribute__ ((weak)) vlib_pci_get_all_dev_addrs ()
71 : {
72 0 : return 0;
73 : }
74 :
75 : static clib_error_t *
76 0 : show_pci_fn (vlib_main_t * vm,
77 : unformat_input_t * input, vlib_cli_command_t * cmd)
78 : {
79 0 : vlib_pci_addr_t *addr = 0, *addrs;
80 0 : int show_all = 0;
81 0 : u8 *s = 0;
82 :
83 0 : while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
84 : {
85 0 : if (unformat (input, "all"))
86 0 : show_all = 1;
87 : else
88 0 : return clib_error_return (0, "unknown input `%U'",
89 : format_unformat_error, input);
90 : }
91 :
92 0 : vlib_cli_output (vm, "%-13s%-5s%-12s%-14s%-16s%-32s%s",
93 : "Address", "Sock", "VID:PID", "Link Speed", "Driver",
94 : "Product Name", "Vital Product Data");
95 :
96 0 : addrs = vlib_pci_get_all_dev_addrs ();
97 :
98 0 : vec_foreach (addr, addrs)
99 : {
100 : vlib_pci_device_info_t *d;
101 0 : d = vlib_pci_get_device_info (vm, addr, 0);
102 :
103 0 : if (!d)
104 0 : continue;
105 :
106 0 : if (d->device_class != PCI_CLASS_NETWORK_ETHERNET && !show_all)
107 0 : continue;
108 :
109 0 : vec_reset_length (s);
110 0 : if (d->numa_node >= 0)
111 0 : s = format (s, " %d", d->numa_node);
112 :
113 0 : vlib_cli_output (
114 : vm, "%-13U%-5v%04x:%04x %-14U%-16s%-32v%U", format_vlib_pci_addr,
115 0 : addr, s, d->vendor_id, d->device_id, format_vlib_pci_link_speed, d,
116 0 : d->driver_name ? (char *) d->driver_name : "", d->product_name,
117 : format_vlib_pci_vpd, d->vpd_r, (u8 *) 0);
118 0 : vlib_pci_free_device_info (d);
119 : }
120 :
121 0 : vec_free (s);
122 0 : vec_free (addrs);
123 0 : return 0;
124 : }
125 :
126 : uword
127 0 : unformat_vlib_pci_addr (unformat_input_t * input, va_list * args)
128 : {
129 0 : vlib_pci_addr_t *addr = va_arg (*args, vlib_pci_addr_t *);
130 : u32 x[4];
131 :
132 0 : if (!unformat (input, "%x:%x:%x.%x", &x[0], &x[1], &x[2], &x[3]))
133 0 : return 0;
134 :
135 0 : addr->domain = x[0];
136 0 : addr->bus = x[1];
137 0 : addr->slot = x[2];
138 0 : addr->function = x[3];
139 :
140 0 : return 1;
141 : }
142 :
143 : u8 *
144 166023 : format_vlib_pci_addr (u8 * s, va_list * va)
145 : {
146 166023 : vlib_pci_addr_t *addr = va_arg (*va, vlib_pci_addr_t *);
147 332046 : return format (s, "%04x:%02x:%02x.%x", addr->domain, addr->bus,
148 166023 : addr->slot, addr->function);
149 : }
150 :
151 : u8 *
152 0 : format_vlib_pci_link_port (u8 *s, va_list *va)
153 : {
154 0 : vlib_pci_device_info_t *d = va_arg (*va, vlib_pci_device_info_t *);
155 : pcie_config_regs_t *r =
156 0 : pci_config_find_capability (&d->config0, PCI_CAP_ID_PCIE);
157 :
158 0 : if (!r)
159 0 : return format (s, "unknown");
160 :
161 0 : return format (s, "P%d", r->link_capabilities >> 24);
162 : }
163 :
164 : u8 *
165 0 : format_vlib_pci_link_speed (u8 * s, va_list * va)
166 : {
167 0 : vlib_pci_device_info_t *d = va_arg (*va, vlib_pci_device_info_t *);
168 : pcie_config_regs_t *r =
169 0 : pci_config_find_capability (&d->config0, PCI_CAP_ID_PCIE);
170 : int width;
171 :
172 0 : if (!r)
173 0 : return format (s, "unknown");
174 :
175 0 : width = (r->link_status >> 4) & 0x3f;
176 :
177 0 : if ((r->link_status & 0xf) == 1)
178 0 : return format (s, "2.5 GT/s x%u", width);
179 0 : if ((r->link_status & 0xf) == 2)
180 0 : return format (s, "5.0 GT/s x%u", width);
181 0 : if ((r->link_status & 0xf) == 3)
182 0 : return format (s, "8.0 GT/s x%u", width);
183 0 : if ((r->link_status & 0xf) == 4)
184 0 : return format (s, "16.0 GT/s x%u", width);
185 0 : return format (s, "unknown");
186 : }
187 :
188 : u8 *
189 0 : format_vlib_pci_vpd (u8 * s, va_list * args)
190 : {
191 0 : u8 *data = va_arg (*args, u8 *);
192 0 : u8 *id = va_arg (*args, u8 *);
193 0 : u32 indent = format_get_indent (s);
194 0 : char *string_types[] = { "PN", "EC", "SN", "MN", 0 };
195 0 : uword p = 0;
196 0 : int first_line = 1;
197 :
198 0 : if (vec_len (data) < 3)
199 0 : return s;
200 :
201 0 : while (p + 3 < vec_len (data))
202 : {
203 :
204 0 : if (data[p] == 0 && data[p + 1] == 0)
205 0 : return s;
206 :
207 0 : if (p + data[p + 2] > vec_len (data))
208 0 : return s;
209 :
210 0 : if (id == 0)
211 : {
212 0 : int is_string = 0;
213 0 : char **c = string_types;
214 :
215 0 : while (c[0])
216 : {
217 0 : if (*(u16 *) & data[p] == *(u16 *) c[0])
218 0 : is_string = 1;
219 0 : c++;
220 : }
221 :
222 0 : if (data[p + 2])
223 : {
224 0 : if (!first_line)
225 0 : s = format (s, "\n%U", format_white_space, indent);
226 : else
227 : {
228 0 : first_line = 0;
229 0 : s = format (s, " ");
230 : }
231 :
232 0 : s = format (s, "%c%c: ", data[p], data[p + 1]);
233 0 : if (is_string)
234 0 : vec_add (s, data + p + 3, data[p + 2]);
235 : else
236 : {
237 : int i;
238 0 : const int max_bytes = 8;
239 0 : s = format (s, "0x");
240 0 : for (i = 0; i < clib_min (data[p + 2], max_bytes); i++)
241 0 : s = format (s, " %02x", data[p + 3 + i]);
242 :
243 0 : if (data[p + 2] > max_bytes)
244 0 : s = format (s, " ...");
245 : }
246 : }
247 : }
248 0 : else if (*(u16 *) & data[p] == *(u16 *) id)
249 : {
250 0 : vec_add (s, data + p + 3, data[p + 2]);
251 0 : return s;
252 : }
253 :
254 0 : p += 3 + data[p + 2];
255 : }
256 :
257 0 : return s;
258 : }
259 :
260 :
261 : /* *INDENT-OFF* */
262 272887 : VLIB_CLI_COMMAND (show_pci_command, static) = {
263 : .path = "show pci",
264 : .short_help = "show pci [all]",
265 : .function = show_pci_fn,
266 : };
267 : /* *INDENT-ON* */
268 :
269 : clib_error_t *
270 559 : pci_bus_init (vlib_main_t * vm)
271 : {
272 559 : vlib_pci_main_t *pm = &pci_main;
273 559 : pm->log_default = vlib_log_register_class ("pci", 0);
274 559 : return 0;
275 : }
276 :
277 2239 : VLIB_INIT_FUNCTION (pci_bus_init);
278 :
279 : /*
280 : * fd.io coding-style-patch-verification: ON
281 : *
282 : * Local Variables:
283 : * eval: (c-set-style "gnu")
284 : * End:
285 : */
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