static int __init iseries_vio_init(void)
{
struct device_node *vio_root;
int ret = -ENODEV;
if (!firmware_has_feature(FW_FEATURE_ISERIES))
goto out;
iommu_vio_init();
vio_root = of_find_node_by_path("/vdevice");
if (!vio_root)
goto out;
if (viopath_hostLp == HvLpIndexInvalid) {
vio_set_hostlp();
/* If we don't have a host, bail out */
if (viopath_hostLp == HvLpIndexInvalid)
goto put_node;
}
get_viodasd_info(vio_root);
get_viocd_info(vio_root);
get_viotape_info(vio_root);
ret = 0;
put_node:
of_node_put(vio_root);
out:
return ret;
}
/**
* vio_bus_init: - Initialize the virtual IO bus
*/
static int __init vio_bus_init(void)
{
int err;
struct device_node *node_vroot;
#ifdef CONFIG_PPC_ISERIES
if (firmware_has_feature(FW_FEATURE_ISERIES)) {
iommu_vio_init();
vio_bus_device.iommu_table = &vio_iommu_table;
iSeries_vio_dev = &vio_bus_device.dev;
}
#endif
err = bus_register(&vio_bus_type);
if (err) {
printk(KERN_ERR "failed to register VIO bus\n");
return err;
}
/*
* The fake parent of all vio devices, just to give us
* a nice directory
*/
err = device_register(&vio_bus_device.dev);
if (err) {
printk(KERN_WARNING "%s: device_register returned %i\n",
__FUNCTION__, err);
return err;
}
node_vroot = find_devices("vdevice");
if (node_vroot) {
struct device_node *of_node;
/*
* Create struct vio_devices for each virtual device in
* the device tree. Drivers will associate with them later.
*/
for (of_node = node_vroot->child; of_node != NULL;
of_node = of_node->sibling) {
printk(KERN_DEBUG "%s: processing %p\n",
__FUNCTION__, of_node);
vio_register_device_node(of_node);
}
}
return 0;
}
