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--- a/pcimodules.c
+++ b/pcimodules.c
@@ -0,0 +1,185 @@
+/*
+ * pcimodules: Load all kernel modules for PCI device currently
+ * plugged into any PCI slot.
+ *
+ * Copyright 2000 Yggdrasil Computing, Incorporated
+ * This file may be copied under the terms and conditions of version
+ * two of the GNU General Public License, as published by the Free
+ * Software Foundation (Cambridge, Massachusetts, USA).
+ *
+ * This file is based on pciutils/lib/example.c, which has the following
+ * authorship and copyright statement:
+ *
+ * Written by Martin Mares and put to public domain. You can do
+ * with it anything you want, but I don't give you any warranty.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <malloc.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/utsname.h>
+#include <sys/param.h>
+#include <sys/types.h>
+
+#define _GNU_SOURCE
+#include <getopt.h>
+
+#include "pciutils.h"
+
+const char program_name[] = "pcimodules";
+
+#define MODDIR "/lib/modules"
+#define PCIMAP "modules.pcimap"
+
+#define LINELENGTH 8000
+
+#define DEVICE_ANY 0xffffffff
+#define VENDOR_ANY 0xffffffff
+
+#include "lib/pci.h"
+
+struct pcimap_entry {
+ unsigned int vendor, subsys_vendor, dev, subsys_dev, class, class_mask;
+ char *module;
+ struct pcimap_entry *next;
+};
+
+static struct pcimap_entry *pcimap_list = NULL;
+
+#define OPT_STRING "h"
+static struct option long_options[] = {
+ {"class", required_argument, NULL, 'c'},
+ {"classmask", required_argument, NULL, 'm'},
+ {"help", no_argument, NULL, 'h'},
+ { 0, 0, 0, 0}
+};
+
+static unsigned long desired_class;
+static unsigned long desired_classmask; /* Default is 0: accept all classes.*/
+
+void
+read_pcimap(void)
+{
+ struct utsname utsname;
+ char filename[MAXPATHLEN];
+ FILE *pcimap_file;
+ char line[LINELENGTH];
+ struct pcimap_entry *entry;
+ unsigned int driver_data;
+ char *prevmodule = "";
+ char module[LINELENGTH];
+
+ if (uname(&utsname) < 0) {
+ perror("uname");
+ exit(1);
+ }
+ sprintf(filename, "%s/%s/%s", MODDIR, utsname.release, PCIMAP);
+ if ((pcimap_file = fopen(filename, "r")) == NULL) {
+ perror(filename);
+ exit(1);
+ }
+
+ while(fgets(line, LINELENGTH, pcimap_file) != NULL) {
+ if (line[0] == '#')
+ continue;
+
+ entry = xmalloc(sizeof(struct pcimap_entry));
+
+ if (sscanf(line, "%s 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x",
+ module,
+ &entry->vendor, &entry->dev,
+ &entry->subsys_vendor, &entry->subsys_dev,
+ &entry->class, &entry->class_mask,
+ &driver_data) != 8) {
+ fprintf (stderr,
+ "modules.pcimap unparsable line: %s.\n", line);
+ free(entry);
+ continue;
+ }
+
+ /* Optimize memory allocation a bit, in case someday we
+ have Linux systems with ~100,000 modules. It also
+ allows us to just compare pointers to avoid trying
+ to load a module twice. */
+ if (strcmp(module, prevmodule) != 0) {
+ prevmodule = xmalloc(strlen(module)+1);
+ strcpy(prevmodule, module);
+ }
+ entry->module = prevmodule;
+ entry->next = pcimap_list;
+ pcimap_list = entry;
+ }
+ fclose(pcimap_file);
+}
+
+/* Return a filled in pci_access->dev tree, with the device classes
+ stored in dev->aux.
+*/
+static void
+match_pci_modules(void)
+{
+ struct pci_access *pacc;
+ struct pci_dev *dev;
+ unsigned int class, subsys_dev, subsys_vendor;
+ struct pcimap_entry *map;
+ const char *prevmodule = "";
+
+ pacc = pci_alloc(); /* Get the pci_access structure */
+ /* Set all options you want -- here we stick with the defaults */
+ pci_init(pacc); /* Initialize the PCI library */
+ pci_scan_bus(pacc); /* We want to get the list of devices */
+ for(dev=pacc->devices; dev; dev=dev->next) {
+ pci_fill_info(dev, PCI_FILL_IDENT | PCI_FILL_BASES);
+ class = (pci_read_word(dev, PCI_CLASS_DEVICE) << 8)
+ | pci_read_byte(dev, PCI_CLASS_PROG);
+ subsys_dev = pci_read_word(dev, PCI_SUBSYSTEM_ID);
+ subsys_vendor = pci_read_word(dev,PCI_SUBSYSTEM_VENDOR_ID);
+ for(map = pcimap_list; map != NULL; map = map->next) {
+ if (((map->class ^ class) & map->class_mask) == 0 &&
+ ((desired_class ^ class) & desired_classmask)==0 &&
+ (map->dev == DEVICE_ANY ||
+ map->dev == dev->device_id) &&
+ (map->vendor == VENDOR_ANY ||
+ map->vendor == dev->vendor_id) &&
+ (map->subsys_dev == DEVICE_ANY ||
+ map->subsys_dev == subsys_dev) &&
+ (map->subsys_vendor == VENDOR_ANY ||
+ map->subsys_vendor == subsys_vendor) &&
+ prevmodule != map->module) {
+ printf("%s\n", map->module);
+ prevmodule = map->module;
+ }
+ }
+
+ }
+ pci_cleanup(pacc);
+}
+
+int
+main (int argc, char **argv)
+{
+ int opt_index = 0;
+ int opt;
+
+ while ((opt = getopt_long(argc, argv, OPT_STRING, long_options,
+ &opt_index)) != -1) {
+ switch(opt) {
+ case 'c':
+ desired_class = strtol(optarg, NULL, 0);
+ break;
+ case 'm':
+ desired_classmask = strtol(optarg, NULL, 0);
+ break;
+ case 'h':
+ printf ("Usage: pcimodules [--help]\n"
+ " Lists kernel modules corresponding to PCI devices currently plugged"
+ " into the computer.\n");
+ }
+ }
+
+ read_pcimap();
+ match_pci_modules();
+ return 0;
+}
--- a/pcimodules.man
+++ b/pcimodules.man
@@ -0,0 +1,92 @@
+.TH pcimodules 8 "@TODAY@" "@VERSION@" "Linux PCI Utilities"
+.IX pcimodules
+.SH NAME
+pcimodules \- List kernel driver modules available for all currently plugged
+in PCI devices
+.SH SYNOPSIS
+.B pcimodules
+.RB [ --class class_id ]
+.RB [ --classmask mask ]
+.RB [ --help ]
+.SH DESCRIPTION
+.B pcimodules
+lists all driver modules for all currently plugged in PCI devices.
+.B pcimodules
+should be run at boot time, and whenever a PCI device is "hot plugged"
+into the system. This can be done by the following Bourne shell syntax:
+.IP
+ for module in $(pcimodules) ; do
+.IP
+ modprobe -s -k "$module"
+.IP
+ done
+.PP
+When a PCI device is removed from the system, the Linux kernel will
+decrement a usage count on PCI driver module. If this count drops
+to zero (i.e., there are no PCI drivers), then the
+.B modprobe -r
+process that is normally configured to run from cron every few minutes
+will eventually remove the unneeded module.
+.PP
+The --class and --classmask arguments can be used to limit the search
+to certain classes of PCI devices. This is useful, for example, to
+generate a list of ethernet card drivers to be loaded when the kernel
+has indicated that it is trying to resolve an unknown network interface.
+.PP
+Modules are listed in the order in which the PCI devices are physically
+arranged so that the computer owner can arrange things like having scsi
+device 0 be on a controller that is not alphabetically the first scsi
+controller.
+.SH OPTIONS
+.TP
+.B --class class --classmask mask
+.PP
+--class and --classmask limit the search to PCI
+cards in particular classes. These arguments are always used together.
+The arguments to --class and --classmask
+can be given as hexadecimal numbers by prefixing a leading "0x".
+Note that the classes used by pcimodules are in "Linux" format,
+meaning the class value that you see with lspci would be shifted
+left eight bits, with the new low eight bits programming interface ID.
+An examples of how to use class and classmask is provided below.
+.B --help, -h
+Print a help message and exit.
+.SH EXAMPLES
+.TP
+pcimodules
+lists all modules corresponding to currently plugged in PCI devices.
+.TP
+pcimodules --class 0x20000 --classmask 0xffff00
+lists all modules corresponding to currently plugged in ethernet PCI devices.
+.SH FILES
+.TP
+.B /lib/modules/<kernel-version>/modules.pcimap
+This file is automatically generated by
+.B depmod,
+and used by
+.B pcimodules
+to determine which modules correspond to which PCI ID's.
+.TP
+.B /proc/bus/pci
+An interface to PCI bus configuration space provided by the post-2.1.82 Linux
+kernels. Contains per-bus subdirectories with per-card config space files and a
+.I devices
+file containing a list of all PCI devices.
+
+.SH SEE ALSO
+.BR lspci (8)
+
+.SH MAINTAINER
+The Linux PCI Utilities are maintained by Martin Mares <mj@suse.cz>.
+
+.SH AUTHOR
+.B pcimodules
+was written by Adam J. Richter <adam@yggdrasil.com>, based on public
+domain example code by Martin Mares <mj@suse.cz>.
+
+.SH COPYRIGHT
+.B pcimodules
+is copyright 2000, Yggdrasil Computing, Incorporated, and may
+be copied under the terms and conditions of version 2 of the GNU
+General Public License as published by the Free Software Foundation
+(Cambridge, Massachusetts, United States of America).
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