tee/amdtee/core.c

51 static void release_session(struct amdtee_session *sess)
58 		if (!test_bit(i, sess->sess_mask))
61 		handle_close_session(sess->ta_handle, sess->session_info[i]);
62 		handle_unload_ta(sess->ta_handle);
65 	kfree(sess);
76 		struct amdtee_session *sess;
78 		sess = list_first_entry_or_null(&ctxdata->sess_list,
82 		if (!sess)
85 		list_del(&sess->list_node);
86 		release_session(sess);
112 	struct amdtee_session *sess;
116 	list_for_each_entry(sess, &ctxdata->sess_list, list_node)
117 		if (sess->ta_handle == ta_handle) {
118 			kref_get(&sess->refcount);
119 			return sess;
123 	sess = kzalloc(sizeof(*sess), GFP_KERNEL);
124 	if (sess) {
125 		sess->ta_handle = ta_handle;
126 		kref_init(&sess->refcount);
127 		spin_lock_init(&sess->lock);
128 		list_add(&sess->list_node, &ctxdata->sess_list);
131 	return sess;
140 	struct amdtee_session *sess;
145 	list_for_each_entry(sess, &ctxdata->sess_list, list_node)
146 		if (ta_handle == sess->ta_handle &&
147 		    test_bit(index, sess->sess_mask))
148 			return sess;
223 	struct amdtee_session *sess = container_of(ref, struct amdtee_session,
226 	list_del(&sess->list_node);
228 	kfree(sess);
236 	struct amdtee_session *sess = NULL;
261 	sess = alloc_session(ctxdata, arg->session);
264 	if (!sess) {
275 		kref_put_mutex(&sess->refcount, destroy_session,
281 	spin_lock(&sess->lock);
282 	i = find_first_zero_bit(sess->sess_mask, TEE_NUM_SESSIONS);
284 		sess->session_info[i] = session_info;
286 		set_bit(i, sess->sess_mask);
288 	spin_unlock(&sess->lock);
294 		kref_put_mutex(&sess->refcount, destroy_session,
309 	struct amdtee_session *sess;
318 	sess = find_session(ctxdata, session);
319 	if (sess) {
322 		session_info = sess->session_info[i];
323 		spin_lock(&sess->lock);
324 		clear_bit(i, sess->sess_mask);
325 		spin_unlock(&sess->lock);
329 	if (!sess)
336 	kref_put_mutex(&sess->refcount, destroy_session, &session_list_mutex);
412 	struct amdtee_session *sess;
417 	sess = find_session(ctxdata, arg->session);
418 	if (sess) {
420 		session_info = sess->session_info[i];
424 	if (!sess)