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Commit | Line | Data |
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e4842ff3 | 1 | /* |
71e8f0ae | 2 | * $Id: filter.c,v 1.2 1998/06/08 07:51:45 mj Exp $ |
e4842ff3 MM |
3 | * |
4 | * Linux PCI Utilities -- Device Filtering | |
5 | * | |
6 | * Copyright (c) 1998 Martin Mares <mj@atrey.karlin.mff.cuni.cz> | |
7 | * | |
8 | * Can be freely distributed and used under the terms of the GNU GPL. | |
9 | */ | |
10 | ||
11 | #include <stdio.h> | |
12 | #include <stdlib.h> | |
13 | #include <string.h> | |
e4842ff3 MM |
14 | |
15 | #include "pciutils.h" | |
16 | ||
17 | void | |
18 | filter_init(struct pci_filter *f) | |
19 | { | |
20 | f->bus = f->slot = f->func = -1; | |
21 | f->vendor = f->device = -1; | |
22 | } | |
23 | ||
24 | /* Slot filter syntax: [[bus]:][slot][.[func]] */ | |
25 | ||
26 | char * | |
27 | filter_parse_slot(struct pci_filter *f, char *str) | |
28 | { | |
29 | char *colon = strchr(str, ':'); | |
30 | char *dot = strchr((colon ? colon + 1 : str), '.'); | |
31 | char *mid = str; | |
32 | char *e; | |
33 | ||
34 | if (colon) | |
35 | { | |
36 | *colon++ = 0; | |
37 | mid = colon; | |
38 | if (str[0] && strcmp(str, "*")) | |
39 | { | |
40 | long int x = strtol(str, &e, 16); | |
41 | if ((e && *e) || (x < 0 || x >= 0xff)) | |
42 | return "Invalid bus number"; | |
43 | f->bus = x; | |
44 | } | |
45 | } | |
46 | if (dot) | |
47 | *dot++ = 0; | |
48 | if (mid[0] && strcmp(mid, "*")) | |
49 | { | |
71e8f0ae | 50 | long int x = strtol(mid, &e, 16); |
e4842ff3 MM |
51 | if ((e && *e) || (x < 0 || x >= 0x1f)) |
52 | return "Invalid slot number"; | |
53 | f->slot = x; | |
54 | } | |
55 | if (dot && dot[0] && strcmp(dot, "*")) | |
56 | { | |
57 | long int x = strtol(dot, &e, 16); | |
58 | if ((e && *e) || (x < 0 || x >= 7)) | |
59 | return "Invalid function number"; | |
60 | f->func = x; | |
61 | } | |
62 | return NULL; | |
63 | } | |
64 | ||
65 | /* ID filter syntax: [vendor]:[device] */ | |
66 | ||
67 | char * | |
68 | filter_parse_id(struct pci_filter *f, char *str) | |
69 | { | |
70 | char *s, *e; | |
71 | ||
72 | if (!*str) | |
73 | return NULL; | |
74 | s = strchr(str, ':'); | |
75 | if (!s) | |
76 | return "':' expected"; | |
77 | *s++ = 0; | |
78 | if (str[0] && strcmp(str, "*")) | |
79 | { | |
80 | long int x = strtol(str, &e, 16); | |
81 | if ((e && *e) || (x < 0 || x >= 0xffff)) | |
82 | return "Invalid vendor ID"; | |
83 | f->vendor = x; | |
84 | } | |
85 | if (s[0] && strcmp(s, "*")) | |
86 | { | |
87 | long int x = strtol(s, &e, 16); | |
88 | if ((e && *e) || (x < 0 || x >= 0xffff)) | |
89 | return "Invalid device ID"; | |
90 | f->device = x; | |
91 | } | |
92 | return NULL; | |
93 | } | |
94 | ||
95 | int | |
96 | filter_match(struct pci_filter *f, byte bus, byte devfn, word vendid, word devid) | |
97 | { | |
98 | if ((f->bus >= 0 && f->bus != bus) || | |
99 | (f->slot >= 0 && f->slot != PCI_SLOT(devfn)) || | |
100 | (f->func >= 0 && f->func != PCI_FUNC(devfn)) || | |
101 | (f->device >= 0 && f->device != devid) || | |
102 | (f->vendor >= 0 && f->vendor != vendid)) | |
103 | return 0; | |
104 | return 1; | |
105 | } |