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Souf Oued982bc712009-12-05 17:56:25 +01001/* vi: set sw=4 ts=4: */
2/*
Denys Vlasenkoccd1efc2010-04-03 15:39:47 +02003 * lspci implementation for busybox
4 *
5 * Copyright (C) 2009 Malek Degachi <malek-degachi@laposte.net>
6 *
Denys Vlasenko0ef64bd2010-08-16 20:14:46 +02007 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
Denys Vlasenkoccd1efc2010-04-03 15:39:47 +02008 */
Pere Orga5bc8c002011-04-11 03:29:49 +02009
10//usage:#define lspci_trivial_usage
11//usage: "[-mk]"
12//usage:#define lspci_full_usage "\n\n"
13//usage: "List all PCI devices"
14//usage: "\n"
15//usage: "\n -m Parseable output"
16//usage: "\n -k Show driver"
17
Denys Vlasenkoccd1efc2010-04-03 15:39:47 +020018#include "libbb.h"
Souf Oued982bc712009-12-05 17:56:25 +010019
20enum {
21 OPT_m = (1 << 0),
22 OPT_k = (1 << 1),
23};
24
25/*
26 * PCI_SLOT_NAME PCI_CLASS: PCI_VID:PCI_DID [PCI_SUBSYS_VID:PCI_SUBSYS_DID] [DRIVER]
27 */
28static int FAST_FUNC fileAction(
29 const char *fileName,
30 struct stat *statbuf UNUSED_PARAM,
31 void *userData UNUSED_PARAM,
32 int depth UNUSED_PARAM)
33{
34 parser_t *parser;
35 char *tokens[3];
36 char *pci_slot_name = NULL, *driver = NULL;
37 int pci_class = 0, pci_vid = 0, pci_did = 0;
38 int pci_subsys_vid = 0, pci_subsys_did = 0;
39
40 char *uevent_filename = concat_path_file(fileName, "/uevent");
41 parser = config_open2(uevent_filename, fopen_for_read);
42 free(uevent_filename);
43
44 while (config_read(parser, tokens, 3, 2, "\0:=", PARSE_NORMAL)) {
45 if (strcmp(tokens[0], "DRIVER") == 0) {
46 driver = xstrdup(tokens[1]);
47 continue;
48 }
49
50 if (strcmp(tokens[0], "PCI_CLASS") == 0) {
51 pci_class = xstrtou(tokens[1], 16)>>8;
52 continue;
53 }
54
55 if (strcmp(tokens[0], "PCI_ID") == 0) {
56 pci_vid = xstrtou(tokens[1], 16);
57 pci_did = xstrtou(tokens[2], 16);
58 continue;
59 }
60
61 if (strcmp(tokens[0], "PCI_SUBSYS_ID") == 0) {
62 pci_subsys_vid = xstrtou(tokens[1], 16);
63 pci_subsys_did = xstrtou(tokens[2], 16);
64 continue;
65 }
66
67 if (strcmp(tokens[0], "PCI_SLOT_NAME") == 0) {
68 pci_slot_name = xstrdup(tokens[2]);
69 continue;
70 }
71 }
72 config_close(parser);
73
74
75 if (option_mask32 & OPT_m) {
76 printf("%s \"Class %04x\" \"%04x\" \"%04x\" \"%04x\" \"%04x\"",
77 pci_slot_name, pci_class, pci_vid, pci_did,
78 pci_subsys_vid, pci_subsys_did);
79 } else {
80 printf("%s Class %04x: %04x:%04x",
81 pci_slot_name, pci_class, pci_vid, pci_did);
82 }
83
84 if ((option_mask32 & OPT_k) && driver) {
85 if (option_mask32 & OPT_m) {
86 printf(" \"%s\"", driver);
87 } else {
88 printf(" %s", driver);
89 }
90 }
91 bb_putchar('\n');
92
93 free(driver);
94 free(pci_slot_name);
95
96 return TRUE;
97}
98
99int lspci_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
100int lspci_main(int argc UNUSED_PARAM, char **argv)
101{
102 getopt32(argv, "m" /*non-compat:*/ "k" /*ignored:*/ "nv");
103
104 recursive_action("/sys/bus/pci/devices",
105 ACTION_RECURSE,
106 fileAction,
107 NULL, /* dirAction */
108 NULL, /* userData */
109 0 /* depth */);
110
111 return EXIT_SUCCESS;
112}