/*
* Called from tcm_loop_fabric_init() in tcl_loop_fabric.c to load the emulated
* tcm_loop SCSI bus.
*/
static int tcm_loop_alloc_core_bus(void)
{
int ret;
tcm_loop_primary = root_device_register("tcm_loop_0");
if (IS_ERR(tcm_loop_primary)) {
pr_err("Unable to allocate tcm_loop_primary\n");
return PTR_ERR(tcm_loop_primary);
}
ret = bus_register(&tcm_loop_lld_bus);
if (ret) {
pr_err("bus_register() failed for tcm_loop_lld_bus\n");
goto dev_unreg;
}
ret = driver_register(&tcm_loop_driverfs);
if (ret) {
pr_err("driver_register() failed for"
"tcm_loop_driverfs\n");
goto bus_unreg;
}
pr_debug("Initialized TCM Loop Core Bus\n");
return ret;
bus_unreg:
bus_unregister(&tcm_loop_lld_bus);
dev_unreg:
root_device_unregister(tcm_loop_primary);
return ret;
}
/*
* Init function for virtio
* devices are in a single page above top of "normal" mem
*/
static int __init kvm_devices_init(void)
{
int rc;
if (!MACHINE_IS_KVM)
return -ENODEV;
kvm_root = root_device_register("kvm_s390");
if (IS_ERR(kvm_root)) {
rc = PTR_ERR(kvm_root);
printk(KERN_ERR "Could not register kvm_s390 root device");
return rc;
}
rc = vmem_add_mapping(real_memory_size, PAGE_SIZE);
if (rc) {
root_device_unregister(kvm_root);
return rc;
}
kvm_devices = (void *) real_memory_size;
INIT_WORK(&hotplug_work, hotplug_devices);
service_subclass_irq_register();
register_external_interrupt(0x2603, kvm_extint_handler);
scan_devices();
return 0;
}
/*D:105
* Fairly early in boot, lguest_devices_init() is called to set up the
* lguest device infrastructure. We check that we are a Guest by checking
* pv_info.name: there are other ways of checking, but this seems most
* obvious to me.
*
* So we can access the "struct lguest_device_desc"s easily, we map that memory
* and store the pointer in the global "lguest_devices". Then we register a
* root device from which all our devices will hang (this seems to be the
* correct sysfs incantation).
*
* Finally we call scan_devices() which adds all the devices found in the
* lguest_devices page.
*/
static int __init lguest_devices_init(void)
{
if (strcmp(pv_info.name, "lguest") != 0)
return 0;
lguest_root = root_device_register("lguest");
if (IS_ERR(lguest_root))
panic("Could not register lguest root");
/* Devices are in a single page above top of "normal" mem */
lguest_devices = lguest_map(max_pfn<<PAGE_SHIFT, 1);
scan_devices();
return 0;
}
static int vfio_ap_matrix_dev_create(void)
{
int ret;
struct device *root_device;
root_device = root_device_register(VFIO_AP_ROOT_NAME);
if (IS_ERR(root_device))
return PTR_ERR(root_device);
matrix_dev = kzalloc(sizeof(*matrix_dev), GFP_KERNEL);
if (!matrix_dev) {
ret = -ENOMEM;
goto matrix_alloc_err;
}
/* Fill in config info via PQAP(QCI), if available */
if (test_facility(12)) {
ret = ap_qci(&matrix_dev->info);
if (ret)
goto matrix_alloc_err;
}
mutex_init(&matrix_dev->lock);
INIT_LIST_HEAD(&matrix_dev->mdev_list);
matrix_dev->device.type = &vfio_ap_dev_type;
dev_set_name(&matrix_dev->device, "%s", VFIO_AP_DEV_NAME);
matrix_dev->device.parent = root_device;
matrix_dev->device.release = vfio_ap_matrix_dev_release;
matrix_dev->device.driver = &vfio_ap_drv.driver;
ret = device_register(&matrix_dev->device);
if (ret)
goto matrix_reg_err;
return 0;
matrix_reg_err:
put_device(&matrix_dev->device);
matrix_alloc_err:
root_device_unregister(root_device);
return ret;
}
/*
* Init function for virtio.
* devices are in a single page above the top of "normal" mem.
*/
static int __init kvm_devices_init(void)
{
int rc = -ENOMEM;
kvm_root = root_device_register("kvm_tile");
if (IS_ERR(kvm_root)) {
rc = PTR_ERR(kvm_root);
pr_err("Could not register kvm_tile root device");
return rc;
}
kvm_devices = generic_remap_prot(PFN_PHYS(max_pfn), PAGE_SIZE,
0, io_prot());
if (!kvm_devices) {
kvm_devices = NULL;
root_device_unregister(kvm_root);
return rc;
}
scan_devices();
return 0;
}