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 show_pci_fn (vlib_main_t * vm,
57 unformat_input_t * input,
58 vlib_cli_command_t * cmd)
60 vlib_pci_main_t * pm = &pci_main;
61 vlib_pci_device_t * d;
62 pci_config_header_t * c;
66 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
68 if (unformat (input, "all"))
71 return clib_error_return (0, "unknown input `%U'",
72 format_unformat_error, input);
75 vlib_cli_output (vm, "%-13s%-7s%-12s%-15s%-20s%-40s",
76 "Address", "Socket", "VID:PID", "Link Speed", "Driver", "Product Name");
78 pool_foreach (d, pm->pci_devs, ({
79 c = &d->config0.header;
81 if (c->device_class != PCI_CLASS_NETWORK_ETHERNET && !show_all)
86 if (d->numa_node >= 0)
87 s = format (s, " %d", d->numa_node);
89 vlib_cli_output (vm, "%-13U%-7v%04x:%04x %-15U%-20s%-40v",
90 format_vlib_pci_addr, &d->bus_address, s,
91 c->vendor_id, c->device_id,
92 format_vlib_pci_link_speed, d,
93 d->driver_name ? (char *) d->driver_name : "",
102 unformat_vlib_pci_addr (unformat_input_t * input, va_list * args)
104 vlib_pci_addr_t * addr = va_arg (* args, vlib_pci_addr_t *);
107 if (!unformat (input, "%x:%x:%x.%x", &x[0], &x[1], &x[2], &x[3]))
113 addr->function = x[3];
119 format_vlib_pci_addr (u8 * s, va_list * va)
121 vlib_pci_addr_t * addr = va_arg (* va, vlib_pci_addr_t *);
122 return format (s, "%04x:%02x:%02x.%x", addr->domain, addr->bus,
123 addr->slot, addr->function);
127 format_vlib_pci_handle (u8 * s, va_list * va)
129 vlib_pci_addr_t * addr = va_arg (* va, vlib_pci_addr_t *);
130 return format (s, "%x/%x/%x", addr->bus, addr->slot, addr->function);
134 format_vlib_pci_link_speed (u8 *s, va_list * va)
136 vlib_pci_device_t * d = va_arg (* va, vlib_pci_device_t *);
137 pcie_config_regs_t * r = pci_config_find_capability (&d->config0, PCI_CAP_ID_PCIE);
141 return format (s, "unknown");
143 width = (r->link_status >> 4) & 0x3f;
145 if ((r->link_status & 0xf) == 1)
146 return format (s, "2.5 GT/s x%u", width);
147 if ((r->link_status & 0xf) == 2)
148 return format (s, "5.0 GT/s x%u", width);
149 if ((r->link_status & 0xf) == 3)
150 return format (s, "8.0 GT/s x%u", width);
151 return format (s, "unknown");
155 VLIB_CLI_COMMAND (show_pci_command, static) = {
157 .short_help = "show pci [all]",
158 .function = show_pci_fn,
161 clib_error_t * pci_bus_init (vlib_main_t * vm)
166 VLIB_INIT_FUNCTION (pci_bus_init);