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Commit | Line | Data |
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c7a34993 MM |
1 | /* |
2 | * The PCI Utilities -- Show Kernel Drivers | |
3 | * | |
17ec7e70 | 4 | * Copyright (c) 1997--2013 Martin Mares <mj@ucw.cz> |
c7a34993 MM |
5 | * |
6 | * Can be freely distributed and used under the terms of the GNU GPL. | |
7 | */ | |
8 | ||
9 | #include <stdio.h> | |
10 | #include <string.h> | |
c7a34993 MM |
11 | |
12 | #include "lspci.h" | |
13 | ||
14 | #ifdef PCI_OS_LINUX | |
15 | ||
16 | #include <sys/utsname.h> | |
17 | ||
17ec7e70 MM |
18 | #ifdef PCI_USE_LIBKMOD |
19 | ||
20 | #include <libkmod.h> | |
21 | ||
22 | static struct kmod_ctx *kmod_ctx; | |
23 | ||
24 | static int | |
25 | show_kernel_init(void) | |
26 | { | |
27 | static int show_kernel_inited = -1; | |
28 | if (show_kernel_inited >= 0) | |
29 | return show_kernel_inited; | |
30 | ||
cc840156 | 31 | kmod_ctx = kmod_new(NULL, NULL); |
17ec7e70 MM |
32 | if (!kmod_ctx) |
33 | { | |
34 | fprintf(stderr, "lspci: Unable to initialize libkmod context\n"); | |
35 | goto failed; | |
36 | } | |
37 | ||
38 | int err; | |
39 | if ((err = kmod_load_resources(kmod_ctx)) < 0) | |
40 | { | |
41 | fprintf(stderr, "lspci: Unable to load libkmod resources: error %d\n", err); | |
42 | goto failed; | |
43 | } | |
44 | ||
45 | show_kernel_inited = 1; | |
46 | return 1; | |
47 | ||
48 | failed: | |
49 | show_kernel_inited = 0; | |
50 | return 0; | |
51 | } | |
52 | ||
53 | void | |
54 | show_kernel_cleanup(void) | |
55 | { | |
56 | if (kmod_ctx) | |
57 | kmod_unref(kmod_ctx); | |
58 | } | |
59 | ||
60 | static const char *next_module(struct device *d) | |
61 | { | |
62 | static struct kmod_list *klist, *kcurrent; | |
63 | static struct kmod_module *kmodule; | |
64 | ||
65 | if (kmodule) | |
66 | { | |
67 | kmod_module_unref(kmodule); | |
68 | kmodule = NULL; | |
69 | } | |
70 | ||
71 | if (!klist) | |
72 | { | |
73 | pci_fill_info(d->dev, PCI_FILL_MODULE_ALIAS); | |
74 | if (!d->dev->module_alias) | |
75 | return NULL; | |
76 | int err = kmod_module_new_from_lookup(kmod_ctx, d->dev->module_alias, &klist); | |
77 | if (err < 0) | |
78 | { | |
79 | fprintf(stderr, "lspci: libkmod lookup failed: error %d\n", err); | |
80 | return NULL; | |
81 | } | |
82 | kcurrent = klist; | |
83 | } | |
84 | else | |
85 | kcurrent = kmod_list_next(klist, kcurrent); | |
86 | ||
87 | if (kcurrent) | |
88 | { | |
89 | kmodule = kmod_module_get_module(kcurrent); | |
90 | return kmod_module_get_name(kmodule); | |
91 | } | |
92 | ||
93 | kmod_module_unref_list(klist); | |
94 | klist = NULL; | |
95 | return NULL; | |
96 | } | |
97 | ||
98 | #else | |
99 | ||
c7a34993 MM |
100 | struct pcimap_entry { |
101 | struct pcimap_entry *next; | |
102 | unsigned int vendor, device; | |
103 | unsigned int subvendor, subdevice; | |
104 | unsigned int class, class_mask; | |
105 | char module[1]; | |
106 | }; | |
107 | ||
108 | static struct pcimap_entry *pcimap_head; | |
109 | ||
17ec7e70 MM |
110 | static int |
111 | show_kernel_init(void) | |
c7a34993 MM |
112 | { |
113 | static int tried_pcimap; | |
114 | struct utsname uts; | |
115 | char *name, line[1024]; | |
116 | FILE *f; | |
117 | ||
118 | if (tried_pcimap) | |
17ec7e70 | 119 | return 1; |
c7a34993 MM |
120 | tried_pcimap = 1; |
121 | ||
122 | if (name = opt_pcimap) | |
123 | { | |
124 | f = fopen(name, "r"); | |
125 | if (!f) | |
126 | die("Cannot open pcimap file %s: %m", name); | |
127 | } | |
128 | else | |
129 | { | |
130 | if (uname(&uts) < 0) | |
131 | die("uname() failed: %m"); | |
132 | name = alloca(64 + strlen(uts.release)); | |
133 | sprintf(name, "/lib/modules/%s/modules.pcimap", uts.release); | |
134 | f = fopen(name, "r"); | |
135 | if (!f) | |
17ec7e70 | 136 | return 1; |
c7a34993 MM |
137 | } |
138 | ||
139 | while (fgets(line, sizeof(line), f)) | |
140 | { | |
141 | char *c = strchr(line, '\n'); | |
142 | struct pcimap_entry *e; | |
143 | ||
144 | if (!c) | |
145 | die("Unterminated or too long line in %s", name); | |
146 | *c = 0; | |
147 | if (!line[0] || line[0] == '#') | |
148 | continue; | |
149 | ||
150 | c = line; | |
151 | while (*c && *c != ' ' && *c != '\t') | |
152 | c++; | |
153 | if (!*c) | |
154 | continue; /* FIXME: Emit warnings! */ | |
155 | *c++ = 0; | |
156 | ||
157 | e = xmalloc(sizeof(*e) + strlen(line)); | |
158 | if (sscanf(c, "%i%i%i%i%i%i", | |
159 | &e->vendor, &e->device, | |
160 | &e->subvendor, &e->subdevice, | |
161 | &e->class, &e->class_mask) != 6) | |
162 | continue; | |
163 | e->next = pcimap_head; | |
164 | pcimap_head = e; | |
165 | strcpy(e->module, line); | |
166 | } | |
167 | fclose(f); | |
17ec7e70 MM |
168 | |
169 | return 1; | |
c7a34993 MM |
170 | } |
171 | ||
172 | static int | |
173 | match_pcimap(struct device *d, struct pcimap_entry *e) | |
174 | { | |
175 | struct pci_dev *dev = d->dev; | |
fb570ee3 | 176 | unsigned int class = (((unsigned int)dev->device_class << 8) | dev->prog_if); |
c7a34993 MM |
177 | |
178 | #define MATCH(x, y) ((y) > 0xffff || (x) == (y)) | |
c7a34993 MM |
179 | return |
180 | MATCH(dev->vendor_id, e->vendor) && | |
181 | MATCH(dev->device_id, e->device) && | |
fb570ee3 PR |
182 | MATCH(dev->subsys_vendor_id, e->subvendor) && |
183 | MATCH(dev->subsys_id, e->subdevice) && | |
c7a34993 MM |
184 | (class & e->class_mask) == e->class; |
185 | #undef MATCH | |
186 | } | |
187 | ||
17ec7e70 MM |
188 | static const char *next_module(struct device *d) |
189 | { | |
b069b79a | 190 | static struct pcimap_entry *current; |
17ec7e70 MM |
191 | |
192 | if (!current) | |
b069b79a | 193 | current = pcimap_head; |
17ec7e70 MM |
194 | else |
195 | current = current->next; | |
196 | ||
197 | while (current) | |
198 | { | |
b069b79a | 199 | if (match_pcimap(d, current)) |
17ec7e70 MM |
200 | return current->module; |
201 | current = current->next; | |
202 | } | |
203 | ||
204 | return NULL; | |
205 | } | |
206 | ||
207 | void | |
208 | show_kernel_cleanup(void) | |
209 | { | |
210 | } | |
211 | ||
212 | #endif | |
213 | ||
b069b79a MM |
214 | static const char * |
215 | next_module_filtered(struct device *d) | |
216 | { | |
217 | static char prev_module[256]; | |
218 | const char *module; | |
219 | ||
220 | while (module = next_module(d)) | |
221 | { | |
222 | if (strcmp(module, prev_module)) | |
223 | { | |
224 | strncpy(prev_module, module, sizeof(prev_module)); | |
225 | prev_module[sizeof(prev_module) - 1] = 0; | |
226 | return module; | |
227 | } | |
228 | } | |
229 | prev_module[0] = 0; | |
230 | return NULL; | |
231 | } | |
232 | ||
c7a34993 MM |
233 | void |
234 | show_kernel(struct device *d) | |
235 | { | |
17ec7e70 | 236 | const char *driver, *module; |
c7a34993 | 237 | |
d994587f PR |
238 | pci_fill_info(d->dev, PCI_FILL_DRIVER); |
239 | if (driver = pci_get_string_property(d->dev, PCI_FILL_DRIVER)) | |
c7a34993 MM |
240 | printf("\tKernel driver in use: %s\n", driver); |
241 | ||
17ec7e70 MM |
242 | if (!show_kernel_init()) |
243 | return; | |
244 | ||
245 | int cnt = 0; | |
b069b79a | 246 | while (module = next_module_filtered(d)) |
17ec7e70 MM |
247 | printf("%s %s", (cnt++ ? "," : "\tKernel modules:"), module); |
248 | if (cnt) | |
c7a34993 MM |
249 | putchar('\n'); |
250 | } | |
251 | ||
252 | void | |
253 | show_kernel_machine(struct device *d) | |
254 | { | |
17ec7e70 | 255 | const char *driver, *module; |
c7a34993 | 256 | |
d994587f PR |
257 | pci_fill_info(d->dev, PCI_FILL_DRIVER); |
258 | if (driver = pci_get_string_property(d->dev, PCI_FILL_DRIVER)) | |
c7a34993 MM |
259 | printf("Driver:\t%s\n", driver); |
260 | ||
17ec7e70 MM |
261 | if (!show_kernel_init()) |
262 | return; | |
263 | ||
b069b79a | 264 | while (module = next_module_filtered(d)) |
17ec7e70 | 265 | printf("Module:\t%s\n", module); |
c7a34993 MM |
266 | } |
267 | ||
268 | #else | |
269 | ||
270 | void | |
d994587f | 271 | show_kernel(struct device *d) |
c7a34993 | 272 | { |
d994587f PR |
273 | const char *driver; |
274 | ||
275 | pci_fill_info(d->dev, PCI_FILL_DRIVER); | |
276 | if (driver = pci_get_string_property(d->dev, PCI_FILL_DRIVER)) | |
277 | printf("\tDriver in use: %s\n", driver); | |
c7a34993 MM |
278 | } |
279 | ||
280 | void | |
d994587f | 281 | show_kernel_machine(struct device *d) |
c7a34993 | 282 | { |
d994587f PR |
283 | const char *driver; |
284 | ||
285 | pci_fill_info(d->dev, PCI_FILL_DRIVER); | |
286 | if (driver = pci_get_string_property(d->dev, PCI_FILL_DRIVER)) | |
287 | printf("Driver:\t%s\n", driver); | |
c7a34993 MM |
288 | } |
289 | ||
17ec7e70 MM |
290 | void |
291 | show_kernel_cleanup(void) | |
292 | { | |
293 | } | |
294 | ||
c7a34993 MM |
295 | #endif |
296 |