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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