C++ (Cpp) sysfs_get_resources Examples

Example #1

File: sysfs.c Project: BackupTheBerlios/sax-svn

static void sysfs_scan(struct pci_access *a)
{
  char dirname[1024];
  DIR *dir;
  struct dirent *entry;
  int n;

  n = snprintf(dirname, sizeof(dirname), "%s/devices", sysfs_name(a));
  if (n < 0 || n >= (int) sizeof(dirname))
    a->error("Directory name too long");
  dir = opendir(dirname);
  if (!dir)
    a->error("Cannot open %s", dirname);
  while ((entry = readdir(dir)))
    {
      struct pci_dev *d;
      unsigned int dom, bus, dev, func;

      /* ".", ".." or a special non-device perhaps */
      if (entry->d_name[0] == '.')
	continue;

      d = pci_alloc_dev(a);
      if (sscanf(entry->d_name, "%x:%x:%x.%d", &dom, &bus, &dev, &func) < 4)
	a->error("sysfs_scan: Couldn't parse entry name %s", entry->d_name);
      d->domain = dom;
      d->bus = bus;
      d->dev = dev;
      d->func = func;
      if (!a->buscentric)
	{
	  sysfs_get_resources(d);
	  d->irq = sysfs_get_value(d, "irq");
	  d->known_fields = PCI_FILL_IRQ | PCI_FILL_BASES | PCI_FILL_ROM_BASE | PCI_FILL_SIZES;
#if 0
	  /*
	   *  We prefer reading these from the config registers, it's faster.
	   *  However, it would be possible and maybe even useful to hack the kernel
	   *  to believe that some device has a different ID. If you do it, just
	   *  enable this piece of code.  --mj
	   */
	  d->vendor_id = sysfs_get_value(d, "vendor");
	  d->device_id = sysfs_get_value(d, "device");
	  d->known_fields |= PCI_FILL_IDENT;
#endif
	}
      pci_link_dev(a, d);
    }
  closedir(dir);
}

Example #2

File: sysfs.c Project: daqingyun/probdata

static void sysfs_scan(struct pci_access *a)
{
  char dirname[1024];
  DIR *dir;
  struct dirent *entry;
  int n;

  n = snprintf(dirname, sizeof(dirname), "%s/devices", sysfs_name(a));
  if (n < 0 || n >= (int) sizeof(dirname))
    a->error("Directory name too long");
  dir = opendir(dirname);
  if (!dir)
    a->error("Cannot open %s", dirname);
  while ((entry = readdir(dir)))
    {
      struct pci_dev *d;
      unsigned int dom, bus, dev, func;

      /* ".", ".." or a special non-device perhaps */
      if (entry->d_name[0] == '.')
	continue;

      d = pci_alloc_dev(a);
      if (sscanf(entry->d_name, "%x:%x:%x.%d", &dom, &bus, &dev, &func) < 4)
	a->error("sysfs_scan: Couldn't parse entry name %s", entry->d_name);
      d->domain = dom;
      d->bus = bus;
      d->dev = dev;
      d->func = func;
      if (!a->buscentric)
	{
	  sysfs_get_resources(d);
	  d->irq = sysfs_get_value(d, "irq");
	  /*
	   *  We could read these faster from the config registers, but we want to give
	   *  the kernel a chance to fix up ID's and especially classes of broken devices.
	   */
	  d->vendor_id = sysfs_get_value(d, "vendor");
	  d->device_id = sysfs_get_value(d, "device");
	  d->device_class = sysfs_get_value(d, "class") >> 8;
	  d->known_fields = PCI_FILL_IDENT | PCI_FILL_CLASS | PCI_FILL_IRQ | PCI_FILL_BASES | PCI_FILL_ROM_BASE | PCI_FILL_SIZES;
	}
      pci_link_dev(a, d);
    }