2 * The PCI Utilities -- Show Kernel Drivers
4 * Copyright (c) 1997--2008 Martin Mares <mj@ucw.cz>
6 * Can be freely distributed and used under the terms of the GNU GPL.
17 #include <sys/utsname.h>
20 struct pcimap_entry *next;
21 unsigned int vendor, device;
22 unsigned int subvendor, subdevice;
23 unsigned int class, class_mask;
27 static struct pcimap_entry *pcimap_head;
32 static int tried_pcimap;
34 char *name, line[1024];
41 if (name = opt_pcimap)
45 die("Cannot open pcimap file %s: %m", name);
50 die("uname() failed: %m");
51 name = alloca(64 + strlen(uts.release));
52 sprintf(name, "/lib/modules/%s/modules.pcimap", uts.release);
58 while (fgets(line, sizeof(line), f))
60 char *c = strchr(line, '\n');
61 struct pcimap_entry *e;
64 die("Unterminated or too long line in %s", name);
66 if (!line[0] || line[0] == '#')
70 while (*c && *c != ' ' && *c != '\t')
73 continue; /* FIXME: Emit warnings! */
76 e = xmalloc(sizeof(*e) + strlen(line));
77 if (sscanf(c, "%i%i%i%i%i%i",
78 &e->vendor, &e->device,
79 &e->subvendor, &e->subdevice,
80 &e->class, &e->class_mask) != 6)
82 e->next = pcimap_head;
84 strcpy(e->module, line);
90 match_pcimap(struct device *d, struct pcimap_entry *e)
92 struct pci_dev *dev = d->dev;
93 unsigned int class = get_conf_long(d, PCI_REVISION_ID) >> 8;
96 #define MATCH(x, y) ((y) > 0xffff || (x) == (y))
97 get_subid(d, &subv, &subd);
99 MATCH(dev->vendor_id, e->vendor) &&
100 MATCH(dev->device_id, e->device) &&
101 MATCH(subv, e->subvendor) &&
102 MATCH(subd, e->subdevice) &&
103 (class & e->class_mask) == e->class;
107 #define DRIVER_BUF_SIZE 1024
110 find_driver(struct device *d, char *buf)
112 struct pci_dev *dev = d->dev;
113 char name[1024], *drv, *base;
116 if (dev->access->method != PCI_ACCESS_SYS_BUS_PCI)
119 base = pci_get_param(dev->access, "sysfs.path");
120 if (!base || !base[0])
123 n = snprintf(name, sizeof(name), "%s/devices/%04x:%02x:%02x.%d/driver",
124 base, dev->domain, dev->bus, dev->dev, dev->func);
125 if (n < 0 || n >= (int)sizeof(name))
126 die("show_driver: sysfs device name too long, why?");
128 n = readlink(name, buf, DRIVER_BUF_SIZE);
131 if (n >= DRIVER_BUF_SIZE)
132 return "<name-too-long>";
135 if (drv = strrchr(buf, '/'))
142 show_kernel(struct device *d)
144 char buf[DRIVER_BUF_SIZE];
146 struct pcimap_entry *e, *last = NULL;
148 if (driver = find_driver(d, buf))
149 printf("\tKernel driver in use: %s\n", driver);
152 for (e=pcimap_head; e; e=e->next)
153 if (match_pcimap(d, e) && (!last || strcmp(last->module, e->module)))
155 printf("%s %s", (last ? "," : "\tKernel modules:"), e->module);
163 show_kernel_machine(struct device *d)
165 char buf[DRIVER_BUF_SIZE];
167 struct pcimap_entry *e, *last = NULL;
169 if (driver = find_driver(d, buf))
170 printf("Driver:\t%s\n", driver);
173 for (e=pcimap_head; e; e=e->next)
174 if (match_pcimap(d, e) && (!last || strcmp(last->module, e->module)))
176 printf("Module:\t%s\n", e->module);
184 show_kernel(struct device *d UNUSED)
189 show_kernel_machine(struct device *d UNUSED)