2 * The PCI Utilities -- Show Kernel Drivers
4 * Copyright (c) 1997--2013 Martin Mares <mj@ucw.cz>
6 * Can be freely distributed and used under the terms of the GNU GPL.
16 #include <sys/utsname.h>
18 #ifdef PCI_USE_LIBKMOD
22 static struct kmod_ctx *kmod_ctx;
25 show_kernel_init(void)
27 static int show_kernel_inited = -1;
28 if (show_kernel_inited >= 0)
29 return show_kernel_inited;
31 kmod_ctx = kmod_new(NULL, NULL);
34 fprintf(stderr, "lspci: Unable to initialize libkmod context\n");
39 if ((err = kmod_load_resources(kmod_ctx)) < 0)
41 fprintf(stderr, "lspci: Unable to load libkmod resources: error %d\n", err);
45 show_kernel_inited = 1;
49 show_kernel_inited = 0;
54 show_kernel_cleanup(void)
60 static const char *next_module(struct device *d)
62 static struct kmod_list *klist, *kcurrent;
63 static struct kmod_module *kmodule;
67 kmod_module_unref(kmodule);
73 pci_fill_info(d->dev, PCI_FILL_MODULE_ALIAS);
74 if (!d->dev->module_alias)
76 int err = kmod_module_new_from_lookup(kmod_ctx, d->dev->module_alias, &klist);
79 fprintf(stderr, "lspci: libkmod lookup failed: error %d\n", err);
85 kcurrent = kmod_list_next(klist, kcurrent);
89 kmodule = kmod_module_get_module(kcurrent);
90 return kmod_module_get_name(kmodule);
93 kmod_module_unref_list(klist);
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;
108 static struct pcimap_entry *pcimap_head;
111 show_kernel_init(void)
113 static int tried_pcimap;
115 char *name, line[1024];
122 if (name = opt_pcimap)
124 f = fopen(name, "r");
126 die("Cannot open pcimap file %s: %m", name);
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");
139 while (fgets(line, sizeof(line), f))
141 char *c = strchr(line, '\n');
142 struct pcimap_entry *e;
145 die("Unterminated or too long line in %s", name);
147 if (!line[0] || line[0] == '#')
151 while (*c && *c != ' ' && *c != '\t')
154 continue; /* FIXME: Emit warnings! */
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)
163 e->next = pcimap_head;
165 strcpy(e->module, line);
173 match_pcimap(struct device *d, struct pcimap_entry *e)
175 struct pci_dev *dev = d->dev;
176 unsigned int class = (((unsigned int)dev->device_class << 8) | dev->prog_if);
178 #define MATCH(x, y) ((y) > 0xffff || (x) == (y))
180 MATCH(dev->vendor_id, e->vendor) &&
181 MATCH(dev->device_id, e->device) &&
182 MATCH(dev->subsys_vendor_id, e->subvendor) &&
183 MATCH(dev->subsys_id, e->subdevice) &&
184 (class & e->class_mask) == e->class;
188 static const char *next_module(struct device *d)
190 static struct pcimap_entry *current;
193 current = pcimap_head;
195 current = current->next;
199 if (match_pcimap(d, current))
200 return current->module;
201 current = current->next;
208 show_kernel_cleanup(void)
215 next_module_filtered(struct device *d)
217 static char prev_module[256];
220 while (module = next_module(d))
222 if (strcmp(module, prev_module))
224 strncpy(prev_module, module, sizeof(prev_module));
225 prev_module[sizeof(prev_module) - 1] = 0;
234 show_kernel(struct device *d)
236 const char *driver, *module;
238 pci_fill_info(d->dev, PCI_FILL_DRIVER);
239 if (driver = pci_get_string_property(d->dev, PCI_FILL_DRIVER))
240 printf("\tKernel driver in use: %s\n", driver);
242 if (!show_kernel_init())
246 while (module = next_module_filtered(d))
247 printf("%s %s", (cnt++ ? "," : "\tKernel modules:"), module);
253 show_kernel_machine(struct device *d)
255 const char *driver, *module;
257 pci_fill_info(d->dev, PCI_FILL_DRIVER);
258 if (driver = pci_get_string_property(d->dev, PCI_FILL_DRIVER))
259 printf("Driver:\t%s\n", driver);
261 if (!show_kernel_init())
264 while (module = next_module_filtered(d))
265 printf("Module:\t%s\n", module);
271 show_kernel(struct device *d)
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);
281 show_kernel_machine(struct device *d)
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);
291 show_kernel_cleanup(void)