89 	struct mox_rwtm *rwtm;  member
92 static inline struct kobject *rwtm_to_kobj(struct mox_rwtm *rwtm)  in rwtm_to_kobj()  argument
94 	return &rwtm->kobj->kobj;  in rwtm_to_kobj()
99 	return container_of(kobj, struct mox_kobject, kobj)->rwtm;  in to_rwtm()
112 static int mox_kobj_create(struct mox_rwtm *rwtm)  in mox_kobj_create()  argument
114 	rwtm->kobj = kzalloc(sizeof(*rwtm->kobj), GFP_KERNEL);  in mox_kobj_create()
115 	if (!rwtm->kobj)  in mox_kobj_create()
118 	kobject_init(rwtm_to_kobj(rwtm), &mox_kobj_ktype);  in mox_kobj_create()
119 	if (kobject_add(rwtm_to_kobj(rwtm), firmware_kobj, "turris-mox-rwtm")) {  in mox_kobj_create()
120 		kobject_put(rwtm_to_kobj(rwtm));  in mox_kobj_create()
124 	rwtm->kobj->rwtm = rwtm;  in mox_kobj_create()
134 	struct mox_rwtm *rwtm = to_rwtm(kobj);	\
135 	if (!rwtm->has_##cat)					\
137 	return sprintf(buf, format, rwtm->name);		\
174 	struct mox_rwtm *rwtm = dev_get_drvdata(cl->dev);  in mox_rwtm_rx_callback()  local
177 	rwtm->reply = *msg;  in mox_rwtm_rx_callback()
178 	complete(&rwtm->cmd_done);  in mox_rwtm_rx_callback()
191 static int mox_get_board_info(struct mox_rwtm *rwtm)  in mox_get_board_info()  argument
194 	struct armada_37xx_rwtm_rx_msg *reply = &rwtm->reply;  in mox_get_board_info()
198 	ret = mbox_send_message(rwtm->mbox, &msg);  in mox_get_board_info()
202 	ret = wait_for_completion_timeout(&rwtm->cmd_done, HZ / 2);  in mox_get_board_info()
208 		dev_warn(rwtm->dev,  in mox_get_board_info()
211 		dev_notice(rwtm->dev,  in mox_get_board_info()
216 		rwtm->serial_number = reply->status[1];  in mox_get_board_info()
217 		rwtm->serial_number <<= 32;  in mox_get_board_info()
218 		rwtm->serial_number |= reply->status[0];  in mox_get_board_info()
219 		rwtm->board_version = reply->status[2];  in mox_get_board_info()
220 		rwtm->ram_size = reply->status[3];  in mox_get_board_info()
221 		reply_to_mac_addr(rwtm->mac_address1, reply->status[4],  in mox_get_board_info()
223 		reply_to_mac_addr(rwtm->mac_address2, reply->status[6],  in mox_get_board_info()
225 		rwtm->has_board_info = 1;  in mox_get_board_info()
228 			rwtm->serial_number);  in mox_get_board_info()
229 		pr_info("           board version %i\n", rwtm->board_version);  in mox_get_board_info()
230 		pr_info("           burned RAM size %i MiB\n", rwtm->ram_size);  in mox_get_board_info()
234 	ret = mbox_send_message(rwtm->mbox, &msg);  in mox_get_board_info()
238 	ret = wait_for_completion_timeout(&rwtm->cmd_done, HZ / 2);  in mox_get_board_info()
244 		dev_warn(rwtm->dev, "Board has no public key burned!\n");  in mox_get_board_info()
246 		dev_notice(rwtm->dev,  in mox_get_board_info()
253 		rwtm->has_pubkey = 1;  in mox_get_board_info()
254 		sprintf(rwtm->pubkey,  in mox_get_board_info()
263 static int check_get_random_support(struct mox_rwtm *rwtm)  in check_get_random_support()  argument
270 	msg.args[1] = rwtm->buf_phys;  in check_get_random_support()
273 	ret = mbox_send_message(rwtm->mbox, &msg);  in check_get_random_support()
277 	ret = wait_for_completion_timeout(&rwtm->cmd_done, HZ / 2);  in check_get_random_support()
281 	return mox_get_status(MBOX_CMD_GET_RANDOM, rwtm->reply.retval);  in check_get_random_support()
286 	struct mox_rwtm *rwtm = (struct mox_rwtm *) rng->priv;  in mox_hwrng_read()  local
295 	msg.args[1] = rwtm->buf_phys;  in mox_hwrng_read()
299 		if (!mutex_trylock(&rwtm->busy))  in mox_hwrng_read()
302 		mutex_lock(&rwtm->busy);  in mox_hwrng_read()
305 	ret = mbox_send_message(rwtm->mbox, &msg);  in mox_hwrng_read()
309 	ret = wait_for_completion_interruptible(&rwtm->cmd_done);  in mox_hwrng_read()
313 	ret = mox_get_status(MBOX_CMD_GET_RANDOM, rwtm->reply.retval);  in mox_hwrng_read()
317 	memcpy(data, rwtm->buf, max);  in mox_hwrng_read()
321 	mutex_unlock(&rwtm->busy);  in mox_hwrng_read()
336 	struct mox_rwtm *rwtm = file->private_data;  in do_sign_read()  local
346 	if (!rwtm->last_sig_done)  in do_sign_read()
350 	ret = simple_read_from_buffer(buf, len, ppos, rwtm->last_sig, 136);  in do_sign_read()
351 	rwtm->last_sig_done = 0;  in do_sign_read()
359 	struct mox_rwtm *rwtm = file->private_data;  in do_sign_write()  local
360 	struct armada_37xx_rwtm_rx_msg *reply = &rwtm->reply;  in do_sign_write()
370 	if (rwtm->last_sig_done)  in do_sign_write()
373 	if (!mutex_trylock(&rwtm->busy))  in do_sign_write()
387 	memset(rwtm->buf, 0, 4);  in do_sign_write()
388 	ret = simple_write_to_buffer(rwtm->buf + 4, 64, &dummy, buf, len);  in do_sign_write()
391 	be32_to_cpu_array(rwtm->buf, rwtm->buf, 17);  in do_sign_write()
395 	msg.args[1] = rwtm->buf_phys;  in do_sign_write()
396 	msg.args[2] = rwtm->buf_phys + 68;  in do_sign_write()
397 	msg.args[3] = rwtm->buf_phys + 2 * 68;  in do_sign_write()
398 	ret = mbox_send_message(rwtm->mbox, &msg);  in do_sign_write()
402 	ret = wait_for_completion_interruptible(&rwtm->cmd_done);  in do_sign_write()
415 	memcpy(rwtm->last_sig, rwtm->buf + 68, 136);  in do_sign_write()
416 	cpu_to_be32_array(rwtm->last_sig, rwtm->last_sig, 34);  in do_sign_write()
417 	rwtm->last_sig_done = 1;  in do_sign_write()
419 	mutex_unlock(&rwtm->busy);  in do_sign_write()
422 	mutex_unlock(&rwtm->busy);  in do_sign_write()
434 static int rwtm_register_debugfs(struct mox_rwtm *rwtm)  in rwtm_register_debugfs()  argument
443 	entry = debugfs_create_file_unsafe("do_sign", 0600, root, rwtm,  in rwtm_register_debugfs()
448 	rwtm->debugfs_root = root;  in rwtm_register_debugfs()
456 static void rwtm_unregister_debugfs(struct mox_rwtm *rwtm)  in rwtm_unregister_debugfs()  argument
458 	debugfs_remove_recursive(rwtm->debugfs_root);  in rwtm_unregister_debugfs()
461 static inline int rwtm_register_debugfs(struct mox_rwtm *rwtm)  in rwtm_register_debugfs()  argument
466 static inline void rwtm_unregister_debugfs(struct mox_rwtm *rwtm)  in rwtm_unregister_debugfs()  argument
473 	struct mox_rwtm *rwtm;  in turris_mox_rwtm_probe()  local
477 	rwtm = devm_kzalloc(dev, sizeof(*rwtm), GFP_KERNEL);  in turris_mox_rwtm_probe()
478 	if (!rwtm)  in turris_mox_rwtm_probe()
481 	rwtm->dev = dev;  in turris_mox_rwtm_probe()
482 	rwtm->buf = dmam_alloc_coherent(dev, PAGE_SIZE, &rwtm->buf_phys,  in turris_mox_rwtm_probe()
484 	if (!rwtm->buf)  in turris_mox_rwtm_probe()
487 	ret = mox_kobj_create(rwtm);  in turris_mox_rwtm_probe()
493 	ret = sysfs_create_files(rwtm_to_kobj(rwtm), mox_rwtm_attrs);  in turris_mox_rwtm_probe()
499 	platform_set_drvdata(pdev, rwtm);  in turris_mox_rwtm_probe()
501 	mutex_init(&rwtm->busy);  in turris_mox_rwtm_probe()
503 	rwtm->mbox_client.dev = dev;  in turris_mox_rwtm_probe()
504 	rwtm->mbox_client.rx_callback = mox_rwtm_rx_callback;  in turris_mox_rwtm_probe()
506 	rwtm->mbox = mbox_request_channel(&rwtm->mbox_client, 0);  in turris_mox_rwtm_probe()
507 	if (IS_ERR(rwtm->mbox)) {  in turris_mox_rwtm_probe()
508 		ret = PTR_ERR(rwtm->mbox);  in turris_mox_rwtm_probe()
515 	init_completion(&rwtm->cmd_done);  in turris_mox_rwtm_probe()
517 	ret = mox_get_board_info(rwtm);  in turris_mox_rwtm_probe()
521 	ret = check_get_random_support(rwtm);  in turris_mox_rwtm_probe()
528 	rwtm->hwrng.name = DRIVER_NAME "_hwrng";  in turris_mox_rwtm_probe()
529 	rwtm->hwrng.read = mox_hwrng_read;  in turris_mox_rwtm_probe()
530 	rwtm->hwrng.priv = (unsigned long) rwtm;  in turris_mox_rwtm_probe()
531 	rwtm->hwrng.quality = 1024;  in turris_mox_rwtm_probe()
533 	ret = devm_hwrng_register(dev, &rwtm->hwrng);  in turris_mox_rwtm_probe()
539 	ret = rwtm_register_debugfs(rwtm);  in turris_mox_rwtm_probe()
550 	mbox_free_channel(rwtm->mbox);  in turris_mox_rwtm_probe()
552 	sysfs_remove_files(rwtm_to_kobj(rwtm), mox_rwtm_attrs);  in turris_mox_rwtm_probe()
554 	kobject_put(rwtm_to_kobj(rwtm));  in turris_mox_rwtm_probe()
560 	struct mox_rwtm *rwtm = platform_get_drvdata(pdev);  in turris_mox_rwtm_remove()  local
562 	rwtm_unregister_debugfs(rwtm);  in turris_mox_rwtm_remove()
563 	sysfs_remove_files(rwtm_to_kobj(rwtm), mox_rwtm_attrs);  in turris_mox_rwtm_remove()
564 	kobject_put(rwtm_to_kobj(rwtm));  in turris_mox_rwtm_remove()
565 	mbox_free_channel(rwtm->mbox);  in turris_mox_rwtm_remove()