| 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * lspci implementation for busybox
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| 4 | *
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| 5 | * Copyright (C) 2009 Malek Degachi <malek-degachi@laposte.net>
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| 6 | *
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| 7 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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| 8 | */
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| 9 |
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| 10 | //usage:#define lspci_trivial_usage
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| 11 | //usage: "[-mk]"
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| 12 | //usage:#define lspci_full_usage "\n\n"
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| 13 | //usage: "List all PCI devices"
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| 14 | //usage: "\n"
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| 15 | //usage: "\n -m Parsable output"
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| 16 | //usage: "\n -k Show driver"
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| 17 |
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| 18 | #include "libbb.h"
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| 19 |
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| 20 | enum {
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| 21 | OPT_m = (1 << 0),
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| 22 | OPT_k = (1 << 1),
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| 23 | };
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| 24 |
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| 25 | /*
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| 26 | * PCI_SLOT_NAME PCI_CLASS: PCI_VID:PCI_DID [PCI_SUBSYS_VID:PCI_SUBSYS_DID] [DRIVER]
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| 27 | */
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| 28 | static int FAST_FUNC fileAction(
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| 29 | const char *fileName,
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| 30 | struct stat *statbuf UNUSED_PARAM,
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| 31 | void *userData UNUSED_PARAM,
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| 32 | int depth UNUSED_PARAM)
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| 33 | {
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| 34 | parser_t *parser;
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| 35 | char *tokens[3];
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| 36 | char *pci_slot_name = NULL, *driver = NULL;
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| 37 | int pci_class = 0, pci_vid = 0, pci_did = 0;
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| 38 | int pci_subsys_vid = 0, pci_subsys_did = 0;
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| 39 |
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| 40 | char *uevent_filename = concat_path_file(fileName, "/uevent");
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| 41 | parser = config_open2(uevent_filename, fopen_for_read);
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| 42 | free(uevent_filename);
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| 43 |
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| 44 | while (config_read(parser, tokens, 3, 2, "\0:=", PARSE_NORMAL)) {
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| 45 | if (strcmp(tokens[0], "DRIVER") == 0) {
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| 46 | driver = xstrdup(tokens[1]);
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| 47 | continue;
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| 48 | }
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| 49 |
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| 50 | if (strcmp(tokens[0], "PCI_CLASS") == 0) {
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| 51 | pci_class = xstrtou(tokens[1], 16)>>8;
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| 52 | continue;
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| 53 | }
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| 54 |
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| 55 | if (strcmp(tokens[0], "PCI_ID") == 0) {
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| 56 | pci_vid = xstrtou(tokens[1], 16);
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| 57 | pci_did = xstrtou(tokens[2], 16);
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| 58 | continue;
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| 59 | }
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| 60 |
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| 61 | if (strcmp(tokens[0], "PCI_SUBSYS_ID") == 0) {
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| 62 | pci_subsys_vid = xstrtou(tokens[1], 16);
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| 63 | pci_subsys_did = xstrtou(tokens[2], 16);
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| 64 | continue;
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| 65 | }
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| 66 |
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| 67 | if (strcmp(tokens[0], "PCI_SLOT_NAME") == 0) {
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| 68 | pci_slot_name = xstrdup(tokens[2]);
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| 69 | continue;
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| 70 | }
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| 71 | }
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| 72 | config_close(parser);
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| 73 |
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| 74 |
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| 75 | if (option_mask32 & OPT_m) {
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| 76 | printf("%s \"Class %04x\" \"%04x\" \"%04x\" \"%04x\" \"%04x\"",
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| 77 | pci_slot_name, pci_class, pci_vid, pci_did,
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| 78 | pci_subsys_vid, pci_subsys_did);
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| 79 | } else {
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| 80 | printf("%s Class %04x: %04x:%04x",
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| 81 | pci_slot_name, pci_class, pci_vid, pci_did);
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| 82 | }
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| 83 |
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| 84 | if ((option_mask32 & OPT_k) && driver) {
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| 85 | if (option_mask32 & OPT_m) {
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| 86 | printf(" \"%s\"", driver);
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| 87 | } else {
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| 88 | printf(" %s", driver);
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| 89 | }
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| 90 | }
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| 91 | bb_putchar('\n');
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| 92 |
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| 93 | free(driver);
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| 94 | free(pci_slot_name);
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| 95 |
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| 96 | return TRUE;
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| 97 | }
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| 98 |
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| 99 | int lspci_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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| 100 | int lspci_main(int argc UNUSED_PARAM, char **argv)
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| 101 | {
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| 102 | getopt32(argv, "m" /*non-compat:*/ "k" /*ignored:*/ "nv");
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| 103 |
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| 104 | recursive_action("/sys/bus/pci/devices",
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| 105 | ACTION_RECURSE,
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| 106 | fileAction,
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| 107 | NULL, /* dirAction */
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| 108 | NULL, /* userData */
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| 109 | 0 /* depth */);
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| 110 |
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| 111 | return EXIT_SUCCESS;
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| 112 | }
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