1 // SPDX-License-Identifier: GPL-2.0
14  *  to existing UV-calls.
36 /* Mapping from IOCTL-nr to UVC-bit */
48 	.supp_uvio_cmds = GENMASK_ULL(UVIO_IOCTL_NUM_IOCTLS - 1, 0),
65  * uvio_uvdev_info() - get information about the uvdevice
73 	void __user *user_buf_arg = (void __user *)uv_ioctl->argument_addr;  in uvio_uvdev_info()
75 	if (uv_ioctl->argument_len < sizeof(uvdev_info))  in uvio_uvdev_info()
76 		return -EINVAL;  in uvio_uvdev_info()
78 		return -EFAULT;  in uvio_uvdev_info()
80 	uv_ioctl->uv_rc = UVC_RC_EXECUTED;  in uvio_uvdev_info()
87 	void __user *user_buf_arcb = (void __user *)uvio_attest->arcb_addr;  in uvio_build_uvcb_attest()
89 	if (copy_from_user(arcb, user_buf_arcb, uvio_attest->arcb_len))  in uvio_build_uvcb_attest()
90 		return -EFAULT;  in uvio_build_uvcb_attest()
92 	uvcb_attest->header.len = sizeof(*uvcb_attest);  in uvio_build_uvcb_attest()
93 	uvcb_attest->header.cmd = UVC_CMD_RETR_ATTEST;  in uvio_build_uvcb_attest()
94 	uvcb_attest->arcb_addr = (u64)arcb;  in uvio_build_uvcb_attest()
95 	uvcb_attest->cont_token = 0;  in uvio_build_uvcb_attest()
96 	uvcb_attest->user_data_len = uvio_attest->user_data_len;  in uvio_build_uvcb_attest()
97 	memcpy(uvcb_attest->user_data, uvio_attest->user_data, sizeof(uvcb_attest->user_data));  in uvio_build_uvcb_attest()
98 	uvcb_attest->meas_len = uvio_attest->meas_len;  in uvio_build_uvcb_attest()
99 	uvcb_attest->meas_addr = (u64)meas;  in uvio_build_uvcb_attest()
100 	uvcb_attest->add_data_len = uvio_attest->add_data_len;  in uvio_build_uvcb_attest()
101 	uvcb_attest->add_data_addr = (u64)add_data;  in uvio_build_uvcb_attest()
111 	struct uvio_attest __user *user_uvio_attest = (void __user *)uv_ioctl->argument_addr;  in uvio_copy_attest_result_to_user()
112 	u32 __user *user_buf_add_len = (u32 __user *)&user_uvio_attest->add_data_len;  in uvio_copy_attest_result_to_user()
113 	void __user *user_buf_add = (void __user *)uvio_attest->add_data_addr;  in uvio_copy_attest_result_to_user()
114 	void __user *user_buf_meas = (void __user *)uvio_attest->meas_addr;  in uvio_copy_attest_result_to_user()
115 	void __user *user_buf_uid = &user_uvio_attest->config_uid;  in uvio_copy_attest_result_to_user()
117 	if (copy_to_user(user_buf_meas, measurement, uvio_attest->meas_len))  in uvio_copy_attest_result_to_user()
118 		return -EFAULT;  in uvio_copy_attest_result_to_user()
119 	if (add_data && copy_to_user(user_buf_add, add_data, uvio_attest->add_data_len))  in uvio_copy_attest_result_to_user()
120 		return -EFAULT;  in uvio_copy_attest_result_to_user()
121 	if (put_user(uvio_attest->add_data_len, user_buf_add_len))  in uvio_copy_attest_result_to_user()
122 		return -EFAULT;  in uvio_copy_attest_result_to_user()
123 	if (copy_to_user(user_buf_uid, uvcb_attest->config_uid, sizeof(uvcb_attest->config_uid)))  in uvio_copy_attest_result_to_user()
124 		return -EFAULT;  in uvio_copy_attest_result_to_user()
130 	u8 __user *user_arg_buf = (u8 __user *)uv_ioctl->argument_addr;  in get_uvio_attest()
133 		return -EFAULT;  in get_uvio_attest()
135 	if (uvio_attest->arcb_len > UVIO_ATT_ARCB_MAX_LEN)  in get_uvio_attest()
136 		return -EINVAL;  in get_uvio_attest()
137 	if (uvio_attest->arcb_len == 0)  in get_uvio_attest()
138 		return -EINVAL;  in get_uvio_attest()
139 	if (uvio_attest->meas_len > UVIO_ATT_MEASUREMENT_MAX_LEN)  in get_uvio_attest()
140 		return -EINVAL;  in get_uvio_attest()
141 	if (uvio_attest->meas_len == 0)  in get_uvio_attest()
142 		return -EINVAL;  in get_uvio_attest()
143 	if (uvio_attest->add_data_len > UVIO_ATT_ADDITIONAL_MAX_LEN)  in get_uvio_attest()
144 		return -EINVAL;  in get_uvio_attest()
145 	if (uvio_attest->reserved136)  in get_uvio_attest()
146 		return -EINVAL;  in get_uvio_attest()
151  * uvio_attestation() - Perform a Retrieve Attestation Measurement UVC.
159  * request, sends the UV-call, and copies the result to userspace.
161  * The Attestation Request has two input and two outputs.
163  * Measurement and Additional Data are outputs for userspace generated by UV.
191 	ret = -EINVAL;  in uvio_attestation()
192 	if (uv_ioctl->argument_len != sizeof(*uvio_attest))  in uvio_attestation()
195 	ret = -ENOMEM;  in uvio_attestation()
204 	ret = -ENOMEM;  in uvio_attestation()
205 	arcb = kvzalloc(uvio_attest->arcb_len, GFP_KERNEL);  in uvio_attestation()
206 	measurement = kvzalloc(uvio_attest->meas_len, GFP_KERNEL);  in uvio_attestation()
210 	if (uvio_attest->add_data_len) {  in uvio_attestation()
211 		add_data = kvzalloc(uvio_attest->add_data_len, GFP_KERNEL);  in uvio_attestation()
226 	uv_ioctl->uv_rc = uvcb_attest->header.rc;  in uvio_attestation()
227 	uv_ioctl->uv_rrc = uvcb_attest->header.rrc;  in uvio_attestation()
240 /** uvio_add_secret() - perform an Add Secret UVC
249  * value. The request is then copied to kernelspace, the UV-call is
267 	void __user *user_buf_arg = (void __user *)uv_ioctl->argument_addr;  in uvio_add_secret()
275 	if (uv_ioctl->argument_len > UVIO_ADD_SECRET_MAX_LEN)  in uvio_add_secret()
276 		return -EINVAL;  in uvio_add_secret()
277 	if (uv_ioctl->argument_len == 0)  in uvio_add_secret()
278 		return -EINVAL;  in uvio_add_secret()
280 	asrcb = kvzalloc(uv_ioctl->argument_len, GFP_KERNEL);  in uvio_add_secret()
282 		return -ENOMEM;  in uvio_add_secret()
284 	ret = -EFAULT;  in uvio_add_secret()
285 	if (copy_from_user(asrcb, user_buf_arg, uv_ioctl->argument_len))  in uvio_add_secret()
291 	uv_ioctl->uv_rc = uvcb.header.rc;  in uvio_add_secret()
292 	uv_ioctl->uv_rrc = uvcb.header.rrc;  in uvio_add_secret()
299 /** uvio_list_secrets() - perform a List Secret UVC
305  * negative return value. It builds the request, performs the UV-call, and
308  * The argument specifies the location for the result of the UV-Call.
320 	void __user *user_buf_arg = (void __user *)uv_ioctl->argument_addr;  in uvio_list_secrets()
328 	if (uv_ioctl->argument_len != UVIO_LIST_SECRETS_LEN)  in uvio_list_secrets()
329 		return -EINVAL;  in uvio_list_secrets()
333 		return -ENOMEM;  in uvio_list_secrets()
337 	uv_ioctl->uv_rc = uvcb.header.rc;  in uvio_list_secrets()
338 	uv_ioctl->uv_rrc = uvcb.header.rrc;  in uvio_list_secrets()
341 		ret = -EFAULT;  in uvio_list_secrets()
347 /** uvio_lock_secrets() - perform a Lock Secret Store UVC
351  * performs the UV-call and copies the return codes to the ioctl control block.
372 	if (ioctl->argument_addr || ioctl->argument_len)  in uvio_lock_secrets()
373 		return -EINVAL;  in uvio_lock_secrets()
376 	ioctl->uv_rc = uvcb.header.rc;  in uvio_lock_secrets()
377 	ioctl->uv_rrc = uvcb.header.rrc;  in uvio_lock_secrets()
385 	u8 nr = _IOC_NR(cmd);  in uvio_copy_and_check_ioctl()  local
388 		return -ENOIOCTLCMD;  in uvio_copy_and_check_ioctl()
390 		return -ENOIOCTLCMD;  in uvio_copy_and_check_ioctl()
391 	if (nr >= UVIO_IOCTL_NUM_IOCTLS)  in uvio_copy_and_check_ioctl()
392 		return -ENOIOCTLCMD;  in uvio_copy_and_check_ioctl()
394 		return -ENOIOCTLCMD;  in uvio_copy_and_check_ioctl()
396 		return -EFAULT;  in uvio_copy_and_check_ioctl()
397 	if (ioctl->flags != 0)  in uvio_copy_and_check_ioctl()
398 		return -EINVAL;  in uvio_copy_and_check_ioctl()
399 	if (memchr_inv(ioctl->reserved14, 0, sizeof(ioctl->reserved14)))  in uvio_copy_and_check_ioctl()
400 		return -EINVAL;  in uvio_copy_and_check_ioctl()
402 	return nr;  in uvio_copy_and_check_ioctl()
413 	int nr;  in uvio_ioctl()  local
415 	nr = uvio_copy_and_check_ioctl(&uv_ioctl, argp, cmd);  in uvio_ioctl()
416 	if (nr < 0)  in uvio_ioctl()
417 		return nr;  in uvio_ioctl()
419 	switch (nr) {  in uvio_ioctl()
436 		ret = -ENOIOCTLCMD;  in uvio_ioctl()
443 		ret = -EFAULT;  in uvio_ioctl()