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1 | /* |
2 | * The PCI Library -- Looking up Names via UDEV and HWDB | |
3 | * | |
4 | * Copyright (c) 2013--2014 Tom Gundersen <teg@jklm.no> | |
5 | * Copyright (c) 2014 Martin Mares <mj@ucw.cz> | |
6 | * | |
7 | * Can be freely distributed and used under the terms of the GNU GPL. | |
8 | */ | |
9 | ||
10 | #include <string.h> | |
11 | ||
12 | #include "internal.h" | |
13 | #include "names.h" | |
14 | ||
15 | #ifdef PCI_HAVE_HWDB | |
16 | ||
17 | #include <libudev.h> | |
18 | #include <stdio.h> | |
19 | #include <stdlib.h> | |
20 | ||
21 | char * | |
22 | pci_id_hwdb_lookup(struct pci_access *a, int cat, int id1, int id2, int id3, int id4) | |
23 | { | |
24 | char modalias[64]; | |
25 | const char *key = NULL; | |
26 | ||
27 | const char *disabled = pci_get_param(a, "hwdb.disable"); | |
28 | if (disabled && atoi(disabled)) | |
29 | return NULL; | |
30 | ||
31 | switch (cat) | |
32 | { | |
33 | case ID_VENDOR: | |
34 | sprintf(modalias, "pci:v%08X*", id1); | |
35 | key = "ID_VENDOR_FROM_DATABASE"; | |
36 | break; | |
37 | case ID_DEVICE: | |
38 | sprintf(modalias, "pci:v%08Xd%08X*", id1, id2); | |
39 | key = "ID_MODEL_FROM_DATABASE"; | |
40 | break; | |
41 | case ID_SUBSYSTEM: | |
42 | sprintf(modalias, "pci:v%08Xd%08Xsv%08Xsd%08X*", id1, id2, id3, id4); | |
43 | key = "ID_MODEL_FROM_DATABASE"; | |
44 | break; | |
45 | case ID_GEN_SUBSYSTEM: | |
46 | sprintf(modalias, "pci:v*d*sv%08Xsd%08X*", id1, id2); | |
47 | key = "ID_MODEL_FROM_DATABASE"; | |
48 | break; | |
49 | case ID_CLASS: | |
50 | sprintf(modalias, "pci:v*d*sv*sd*bc%02X*", id1); | |
51 | key = "ID_PCI_CLASS_FROM_DATABASE"; | |
52 | break; | |
53 | case ID_SUBCLASS: | |
54 | sprintf(modalias, "pci:v*d*sv*sd*bc%02Xsc%02X*", id1, id2); | |
55 | key = "ID_PCI_SUBCLASS_FROM_DATABASE"; | |
56 | break; | |
57 | case ID_PROGIF: | |
58 | sprintf(modalias, "pci:v*d*sv*sd*bc%02Xsc%02Xi%02X*", id1, id2, id3); | |
59 | key = "ID_PCI_INTERFACE_FROM_DATABASE"; | |
60 | break; | |
61 | } | |
62 | ||
63 | if (key) | |
64 | { | |
65 | if (!a->id_udev_hwdb) | |
66 | { | |
67 | a->debug("Initializing UDEV HWDB\n"); | |
68 | a->id_udev = udev_new(); | |
69 | a->id_udev_hwdb = udev_hwdb_new(a->id_udev); | |
70 | } | |
71 | ||
72 | struct udev_list_entry *entry; | |
73 | udev_list_entry_foreach(entry, udev_hwdb_get_properties_list_entry(a->id_udev_hwdb, modalias, 0)) | |
74 | if (strcmp(udev_list_entry_get_name(entry), key) == 0) | |
75 | return pci_strdup(a, udev_list_entry_get_value(entry)); | |
76 | } | |
77 | ||
78 | return NULL; | |
79 | } | |
80 | ||
81 | void | |
82 | pci_id_hwdb_free(struct pci_access *a) | |
83 | { | |
84 | if (a->id_udev_hwdb) | |
85 | { | |
86 | udev_hwdb_unref(a->id_udev_hwdb); | |
87 | a->id_udev_hwdb = NULL; | |
88 | } | |
89 | if (a->id_udev) | |
90 | { | |
91 | udev_unref(a->id_udev); | |
92 | a->id_udev = NULL; | |
93 | } | |
94 | } | |
95 | ||
96 | #else | |
97 | ||
98 | char * | |
99 | pci_id_hwdb_lookup(struct pci_access *a UNUSED, int cat UNUSED, int id1 UNUSED, int id2 UNUSED, int id3 UNUSED, int id4 UNUSED) | |
100 | { | |
101 | return NULL; | |
102 | } | |
103 | ||
104 | void | |
105 | pci_id_hwdb_free(struct pci_access *a UNUSED) | |
106 | { | |
107 | } | |
108 | ||
109 | #endif |