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:
7 * http://www.apache.org/licenses/LICENSE-2.0
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.
16 * pci.c: Linux user space PCI bus management.
18 * Copyright (c) 2008 Eliot Dresselhaus
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:
28 * The above copyright notice and this permission notice shall be
29 * included in all copies or substantial portions of the Software.
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.
40 #include <vlib/vlib.h>
41 #include <vlib/pci/pci.h>
42 #include <vlib/unix/unix.h>
44 #include <sys/types.h>
48 #include <sys/ioctl.h>
50 #include <linux/ethtool.h>
51 #include <linux/sockios.h>
53 vlib_pci_main_t pci_main;
56 vlib_get_pci_device (vlib_pci_addr_t * addr)
58 vlib_pci_main_t *pm = &pci_main;
60 p = hash_get (pm->pci_dev_index_by_pci_addr, addr->as_u32);
65 return vec_elt_at_index (pm->pci_devs, p[0]);
69 show_pci_fn (vlib_main_t * vm,
70 unformat_input_t * input, vlib_cli_command_t * cmd)
72 vlib_pci_main_t *pm = &pci_main;
77 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
79 if (unformat (input, "all"))
82 return clib_error_return (0, "unknown input `%U'",
83 format_unformat_error, input);
86 vlib_cli_output (vm, "%-13s%-5s%-12s%-13s%-16s%-32s%s",
87 "Address", "Sock", "VID:PID", "Link Speed", "Driver",
88 "Product Name", "Vital Product Data");
91 pool_foreach (d, pm->pci_devs, ({
93 if (d->device_class != PCI_CLASS_NETWORK_ETHERNET && !show_all)
98 if (d->numa_node >= 0)
99 s = format (s, " %d", d->numa_node);
101 vlib_cli_output (vm, "%-13U%-5v%04x:%04x %-13U%-16s%-32v%U",
102 format_vlib_pci_addr, &d->bus_address, s,
103 d->vendor_id, d->device_id,
104 format_vlib_pci_link_speed, d,
105 d->driver_name ? (char *) d->driver_name : "",
107 format_vlib_pci_vpd, d->vpd_r, 0);
116 unformat_vlib_pci_addr (unformat_input_t * input, va_list * args)
118 vlib_pci_addr_t *addr = va_arg (*args, vlib_pci_addr_t *);
121 if (!unformat (input, "%x:%x:%x.%x", &x[0], &x[1], &x[2], &x[3]))
127 addr->function = x[3];
133 format_vlib_pci_addr (u8 * s, va_list * va)
135 vlib_pci_addr_t *addr = va_arg (*va, vlib_pci_addr_t *);
136 return format (s, "%04x:%02x:%02x.%x", addr->domain, addr->bus,
137 addr->slot, addr->function);
141 format_vlib_pci_handle (u8 * s, va_list * va)
143 vlib_pci_addr_t *addr = va_arg (*va, vlib_pci_addr_t *);
144 return format (s, "%x/%x/%x", addr->bus, addr->slot, addr->function);
148 format_vlib_pci_link_speed (u8 * s, va_list * va)
150 vlib_pci_device_t *d = va_arg (*va, vlib_pci_device_t *);
151 pcie_config_regs_t *r =
152 pci_config_find_capability (&d->config0, PCI_CAP_ID_PCIE);
156 return format (s, "unknown");
158 width = (r->link_status >> 4) & 0x3f;
160 if ((r->link_status & 0xf) == 1)
161 return format (s, "2.5 GT/s x%u", width);
162 if ((r->link_status & 0xf) == 2)
163 return format (s, "5.0 GT/s x%u", width);
164 if ((r->link_status & 0xf) == 3)
165 return format (s, "8.0 GT/s x%u", width);
166 return format (s, "unknown");
170 format_vlib_pci_vpd (u8 * s, va_list * args)
172 u8 *data = va_arg (*args, u8 *);
173 u8 *id = va_arg (*args, u8 *);
174 uword indent = format_get_indent (s);
175 char *string_types[] = { "PN", "EC", "SN", "MN", 0 };
179 if (vec_len (data) < 3)
182 while (p + 3 < vec_len (data))
185 if (data[p] == 0 && data[p + 1] == 0)
188 if (p + data[p + 2] > vec_len (data))
194 char **c = string_types;
198 if (*(u16 *) & data[p] == *(u16 *) c[0])
206 s = format (s, "\n%U", format_white_space, indent);
213 s = format (s, "%c%c: ", data[p], data[p + 1]);
215 vec_add (s, data + p + 3, data[p + 2]);
219 const int max_bytes = 8;
220 s = format (s, "0x");
221 for (i = 0; i < clib_min (data[p + 2], max_bytes); i++)
222 s = format (s, " %02x", data[p + 3 + i]);
224 if (data[p + 2] > max_bytes)
225 s = format (s, " ...");
229 else if (*(u16 *) & data[p] == *(u16 *) id)
231 vec_add (s, data + p + 3, data[p + 2]);
235 p += 3 + data[p + 2];
243 VLIB_CLI_COMMAND (show_pci_command, static) = {
245 .short_help = "show pci [all]",
246 .function = show_pci_fn,
251 pci_bus_init (vlib_main_t * vm)
256 VLIB_INIT_FUNCTION (pci_bus_init);
259 * fd.io coding-style-patch-verification: ON
262 * eval: (c-set-style "gnu")