/* * Copyright (c) 2016 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /* * pci.c: Linux user space PCI bus management. * * Copyright (c) 2008 Eliot Dresselhaus * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include <vlib/vlib.h> #include <vlib/pci/pci.h> #include <vlib/unix/unix.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <dirent.h> #include <sys/ioctl.h> #include <net/if.h> #include <linux/ethtool.h> #include <linux/sockios.h> vlib_pci_main_t pci_main; vlib_pci_device_info_t * __attribute__ ((weak)) vlib_pci_get_device_info (vlib_main_t * vm, vlib_pci_addr_t * addr, clib_error_t ** error) { if (error) *error = clib_error_return (0, "unsupported"); return 0; } vlib_pci_addr_t * __attribute__ ((weak)) vlib_pci_get_all_dev_addrs () { return 0; } static clib_error_t * show_pci_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { vlib_pci_addr_t *addr = 0, *addrs; int show_all = 0; u8 *s = 0; while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { if (unformat (input, "all")) show_all = 1; else return clib_error_return (0, "unknown input `%U'", format_unformat_error, input); } vlib_cli_output (vm, "%-13s%-5s%-12s%-14s%-16s%-32s%s", "Address", "Sock", "VID:PID", "Link Speed", "Driver", "Product Name", "Vital Product Data"); addrs = vlib_pci_get_all_dev_addrs (); /* *INDENT-OFF* */ vec_foreach (addr, addrs) { vlib_pci_device_info_t *d; d = vlib_pci_get_device_info (vm, addr, 0); if (!d) continue; if (d->device_class != PCI_CLASS_NETWORK_ETHERNET && !show_all) continue; vec_reset_length (s); if (d->numa_node >= 0) s = format (s, " %d", d->numa_node); vlib_cli_output (vm, "%-13U%-5v%04x:%04x %-14U%-16s%-32v%U", format_vlib_pci_addr, addr, s, d->vendor_id, d->device_id, format_vlib_pci_link_speed, d, d->driver_name ? (char *) d->driver_name : "", d->product_name, format_vlib_pci_vpd, d->vpd_r, (u8 *) 0); vlib_pci_free_device_info (d); } /* *INDENT-ON* */ vec_free (s); vec_free (addrs); return 0; } uword unformat_vlib_pci_addr (unformat_input_t * input, va_list * args) { vlib_pci_addr_t *addr = va_arg (*args, vlib_pci_addr_t *); u32 x[4]; if (!unformat (input, "%x:%x:%x.%x", &x[0], &x[1], &x[2], &x[3])) return 0; addr->domain = x[0]; addr->bus = x[1]; addr->slot = x[2]; addr->function = x[3]; return 1; } u8 * format_vlib_pci_addr (u8 * s, va_list * va) { vlib_pci_addr_t *addr = va_arg (*va, vlib_pci_addr_t *); return format (s, "%04x:%02x:%02x.%x", addr->domain, addr->bus, addr->slot, addr->function); } u8 * format_vlib_pci_link_speed (u8 * s, va_list * va) { vlib_pci_device_info_t *d = va_arg (*va, vlib_pci_device_info_t *); pcie_config_regs_t *r = pci_config_find_capability (&d->config0, PCI_CAP_ID_PCIE); int width; if (!r) return format (s, "unknown"); width = (r->link_status >> 4) & 0x3f; if ((r->link_status & 0xf) == 1) return format (s, "2.5 GT/s x%u", width); if ((r->link_status & 0xf) == 2) return format (s, "5.0 GT/s x%u", width); if ((r->link_status & 0xf) == 3) return format (s, "8.0 GT/s x%u", width); if ((r->link_status & 0xf) == 4) return format (s, "16.0 GT/s x%u", width); return format (s, "unknown"); } u8 * format_vlib_pci_vpd (u8 * s, va_list * args) { u8 *data = va_arg (*args, u8 *); u8 *id = va_arg (*args, u8 *); u32 indent = format_get_indent (s); char *string_types[] = { "PN", "EC", "SN", "MN", 0 }; uword p = 0; int first_line = 1; if (vec_len (data) < 3) return s; while (p + 3 < vec_len (data)) { if (data[p] == 0 && data[p + 1] == 0) return s; if (p + data[p + 2] > vec_len (data)) return s; if (id == 0) { int is_string = 0; char **c = string_types; while (c[0]) { if (*(u16 *) & data[p] == *(u16 *) c[0]) is_string = 1; c++; } if (data[p + 2]) { if (!first_line) s = format (s, "\n%U", format_white_space, indent); else { first_line = 0; s = format (s, " "); } s = format (s, "%c%c: ", data[p], data[p + 1]); if (is_string) vec_add (s, data + p + 3, data[p + 2]); else { int i; const int max_bytes = 8; s = format (s, "0x"); for (i = 0; i < clib_min (data[p + 2], max_bytes); i++) s = format (s, " %02x", data[p + 3 + i]); if (data[p + 2] > max_bytes) s = format (s, " ..."); } } } else if (*(u16 *) & data[p] == *(u16 *) id) { vec_add (s, data + p + 3, data[p + 2]); return s; } p += 3 + data[p + 2]; } return s; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (show_pci_command, static) = { .path = "show pci", .short_help = "show pci [all]", .function = show_pci_fn, }; /* *INDENT-ON* */ clib_error_t * pci_bus_init (vlib_main_t * vm) { vlib_pci_main_t *pm = &pci_main; pm->log_default = vlib_log_register_class ("pci", 0); return 0; } VLIB_INIT_FUNCTION (pci_bus_init); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */