/*
* First routine called when the kernel module is loaded
*/
static int __init tf_device_register(void)
{
int error;
struct tf_device *dev = &g_tf_dev;
dprintk(KERN_INFO "tf_device_register()\n");
/*
* Initialize the device
*/
dev->dev_number = MKDEV(device_major_number,
TF_DEVICE_MINOR_NUMBER);
cdev_init(&dev->cdev, &g_tf_device_file_ops);
dev->cdev.owner = THIS_MODULE;
g_tf_sysdev.id = 0;
g_tf_sysdev.cls = &g_tf_device_sys_class;
INIT_LIST_HEAD(&dev->connection_list);
spin_lock_init(&dev->connection_list_lock);
#if defined(MODULE) && defined(CONFIG_TF_ZEBRA)
error = (*tf_comm_early_init)();
if (error)
goto module_early_init_failed;
error = tf_device_mshield_init(smc_mem);
if (error)
goto mshield_init_failed;
#ifdef CONFIG_TF_DRIVER_CRYPTO_FIPS
error = tf_crypto_hmac_module_init();
if (error)
goto hmac_init_failed;
error = tf_self_test_register_device();
if (error)
goto self_test_register_device_failed;
#endif
#endif
/* register the sysfs object driver stats */
error = kobject_init_and_add(&dev->kobj, &tf_ktype, NULL, "%s",
TF_DEVICE_BASE_NAME);
if (error) {
printk(KERN_ERR "tf_device_register(): "
"kobject_init_and_add failed (error %d)!\n", error);
kobject_put(&dev->kobj);
goto kobject_init_and_add_failed;
}
/*
* Register the system device.
*/
error = sysdev_class_register(&g_tf_device_sys_class);
if (error != 0) {
printk(KERN_ERR "tf_device_register():"
" sysdev_class_register failed (error %d)!\n",
error);
goto sysdev_class_register_failed;
}
error = sysdev_register(&g_tf_sysdev);
if (error != 0) {
dprintk(KERN_ERR "tf_device_register(): "
"sysdev_register failed (error %d)!\n",
error);
goto sysdev_register_failed;
}
/*
* Register the char device.
*/
printk(KERN_INFO "Registering char device %s (%u:%u)\n",
TF_DEVICE_BASE_NAME,
MAJOR(dev->dev_number),
MINOR(dev->dev_number));
error = register_chrdev_region(dev->dev_number, 1,
TF_DEVICE_BASE_NAME);
if (error != 0) {
printk(KERN_ERR "tf_device_register():"
" register_chrdev_region failed (error %d)!\n",
error);
goto register_chrdev_region_failed;
}
error = cdev_add(&dev->cdev, dev->dev_number, 1);
if (error != 0) {
printk(KERN_ERR "tf_device_register(): "
"cdev_add failed (error %d)!\n",
error);
goto cdev_add_failed;
}
/*
* Initialize the communication with the Secure World.
*/
#ifdef CONFIG_TF_TRUSTZONE
dev->sm.soft_int_irq = soft_interrupt;
#endif
error = tf_init(&g_tf_dev.sm);
if (error != S_SUCCESS) {
dprintk(KERN_ERR "tf_device_register(): "
"tf_init failed (error %d)!\n",
error);
goto init_failed;
}
#ifdef CONFIG_TF_DRIVER_CRYPTO_FIPS
error = tf_self_test_post_init(&(dev_stats->kobj));
/* N.B. error > 0 indicates a POST failure, which will not
prevent the module from loading. */
if (error < 0) {
dprintk(KERN_ERR "tf_device_register(): "
"tf_self_test_post_vectors failed (error %d)!\n",
error);
goto post_failed;
}
#endif
#ifdef CONFIG_ANDROID
tf_class = class_create(THIS_MODULE, TF_DEVICE_BASE_NAME);
device_create(tf_class, NULL,
dev->dev_number,
NULL, TF_DEVICE_BASE_NAME);
#endif
#ifdef CONFIG_TF_ZEBRA
/*
* Initializes the /dev/tf_ctrl device node.
*/
error = tf_ctrl_device_register();
if (error)
goto ctrl_failed;
#endif
#ifdef CONFIG_TF_DRIVER_DEBUG_SUPPORT
address_cache_property((unsigned long) &tf_device_register);
#endif
/*
* Successful completion.
*/
dprintk(KERN_INFO "tf_device_register(): Success\n");
return 0;
/*
* Error: undo all operations in the reverse order
*/
#ifdef CONFIG_TF_ZEBRA
ctrl_failed:
#endif
#ifdef CONFIG_TF_DRIVER_CRYPTO_FIPS
tf_self_test_post_exit();
post_failed:
#endif
init_failed:
cdev_del(&dev->cdev);
cdev_add_failed:
unregister_chrdev_region(dev->dev_number, 1);
register_chrdev_region_failed:
sysdev_unregister(&g_tf_sysdev);
sysdev_register_failed:
sysdev_class_unregister(&g_tf_device_sys_class);
sysdev_class_register_failed:
kobject_init_and_add_failed:
kobject_del(&g_tf_dev.kobj);
#if defined(MODULE) && defined(CONFIG_TF_ZEBRA)
#ifdef CONFIG_TF_DRIVER_CRYPTO_FIPS
tf_self_test_unregister_device();
self_test_register_device_failed:
tf_crypto_hmac_module_exit();
hmac_init_failed:
#endif
tf_device_mshield_exit();
mshield_init_failed:
module_early_init_failed:
#endif
dprintk(KERN_INFO "tf_device_register(): Failure (error %d)\n",
error);
return error;
}
/*
* First routine called when the kernel module is loaded
*/
static int __init tf_device_register(void)
{
int error;
struct tf_device *dev = &g_tf_dev;
struct tf_device_stats *dev_stats = &dev->stats;
dprintk(KERN_INFO "tf_device_register()\n");
/*
* Initialize the device
*/
dev->dev_number = MKDEV(device_major_number,
TF_DEVICE_MINOR_NUMBER);
cdev_init(&dev->cdev, &g_tf_device_file_ops);
dev->cdev.owner = THIS_MODULE;
INIT_LIST_HEAD(&dev->connection_list);
spin_lock_init(&dev->connection_list_lock);
/* register the sysfs object driver stats */
dev_stats->kobj_type.sysfs_ops = &kobj_sysfs_operations;
dev_stats->kobj_stat_attribute.name = "info";
dev_stats->kobj_stat_attribute.mode = S_IRUGO;
dev_stats->kobj_attribute_list[0] =
&dev_stats->kobj_stat_attribute;
dev_stats->kobj_type.default_attrs =
dev_stats->kobj_attribute_list,
error = kobject_init_and_add(&(dev_stats->kobj),
&(dev_stats->kobj_type), NULL, "%s",
TF_DEVICE_BASE_NAME);
if (error) {
kobject_put(&dev_stats->kobj);
goto kobject_init_and_add_failed;
}
register_syscore_ops((struct syscore_ops *)&g_tf_syscore_ops);
/*
* Register the char device.
*/
printk(KERN_INFO "Registering char device %s (%u:%u)\n",
TF_DEVICE_BASE_NAME,
MAJOR(dev->dev_number),
MINOR(dev->dev_number));
error = register_chrdev_region(dev->dev_number, 1,
TF_DEVICE_BASE_NAME);
if (error != 0) {
printk(KERN_ERR "tf_device_register():"
" register_chrdev_region failed (error %d)!\n",
error);
goto register_chrdev_region_failed;
}
error = cdev_add(&dev->cdev, dev->dev_number, 1);
if (error != 0) {
printk(KERN_ERR "tf_device_register(): "
"cdev_add failed (error %d)!\n",
error);
goto cdev_add_failed;
}
/*
* Initialize the communication with the Secure World.
*/
#ifdef CONFIG_TF_TRUSTZONE
dev->sm.soft_int_irq = soft_interrupt;
#endif
error = tf_init(&g_tf_dev.sm);
if (error != S_SUCCESS) {
dprintk(KERN_ERR "tf_device_register(): "
"tf_init failed (error %d)!\n",
error);
goto init_failed;
}
#ifdef CONFIG_ANDROID
#ifdef CONFIG_TF_DRIVER_CRYPTO_FIPS
error = tf_self_test_post_init(&(g_tf_dev.kobj));
/* N.B. error > 0 indicates a POST failure, which will not
prevent the module from loading. */
if (error < 0) {
dprintk(KERN_ERR "tf_device_register(): "
"tf_self_test_post_vectors failed (error %d)!\n",
error);
goto post_failed;
}
#endif
tf_class = class_create(THIS_MODULE, TF_DEVICE_BASE_NAME);
device_create(tf_class, NULL,
dev->dev_number,
NULL, TF_DEVICE_BASE_NAME);
#endif
#ifdef CONFIG_TF_ZEBRA
/*
* Initializes the /dev/tf_ctrl device node.
*/
error = tf_ctrl_device_register();
if (error)
goto init_failed;
#endif
#ifdef CONFIG_BENCH_SECURE_CYCLE
run_bogo_mips();
address_cache_property((unsigned long) &tf_device_register);
#endif
/*
* Successful completion.
*/
dprintk(KERN_INFO "tf_device_register(): Success\n");
return 0;
/*
* Error: undo all operations in the reverse order
*/
init_failed:
cdev_del(&dev->cdev);
cdev_add_failed:
unregister_chrdev_region(dev->dev_number, 1);
register_chrdev_region_failed:
unregister_syscore_ops((struct syscore_ops *)&g_tf_syscore_ops);
kobject_init_and_add_failed:
kobject_del(&g_tf_dev.stats.kobj);
dprintk(KERN_INFO "tf_device_register(): Failure (error %d)\n",
error);
return error;
}
