1 files changed, 77 insertions, 0 deletions
diff --git a/bifrost/r25p0/kernel/drivers/gpu/arm/midgard/tests/include/kutf/kutf_helpers.h b/bifrost/r25p0/kernel/drivers/gpu/arm/midgard/tests/include/kutf/kutf_helpers.h
new file mode 100644
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--- /dev/null
+++ b/bifrost/r25p0/kernel/drivers/gpu/arm/midgard/tests/include/kutf/kutf_helpers.h
@@ -0,0 +1,77 @@
+/*
+ *
+ * (C) COPYRIGHT 2017 ARM Limited. All rights reserved.
+ *
+ * This program is free software and is provided to you under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation, and any use by you of this program is subject to the terms
+ * of such GNU licence.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, you can access it online at
+ * http://www.gnu.org/licenses/gpl-2.0.html.
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ *
+ */
+
+#ifndef _KERNEL_UTF_HELPERS_H_
+#define _KERNEL_UTF_HELPERS_H_
+
+/* kutf_helpers.h
+ * Test helper functions for the kernel UTF test infrastructure.
+ *
+ * These functions provide methods for enqueuing/dequeuing lines of text sent
+ * by user space. They are used to implement the transfer of "userdata" from
+ * user space to kernel.
+ */
+
+#include <kutf/kutf_suite.h>
+
+/**
+ * kutf_helper_input_dequeue() - Dequeue a line sent by user space
+ * @context:    KUTF context
+ * @str_size:   Pointer to an integer to receive the size of the string
+ *
+ * If no line is available then this function will wait (interruptibly) until
+ * a line is available.
+ *
+ * Return: The line dequeued, ERR_PTR(-EINTR) if interrupted or NULL on end
+ * of data.
+ */
+char *kutf_helper_input_dequeue(struct kutf_context *context, size_t *str_size);
+
+/**
+ * kutf_helper_input_enqueue() - Enqueue a line sent by user space
+ * @context:   KUTF context
+ * @str:       The user space address of the line
+ * @size:      The length in bytes of the string
+ *
+ * This function will use copy_from_user to copy the string out of user space.
+ * The string need not be NULL-terminated (@size should not include the NULL
+ * termination).
+ *
+ * As a special case @str==NULL and @size==0 is valid to mark the end of input,
+ * but callers should use kutf_helper_input_enqueue_end_of_data() instead.
+ *
+ * Return: 0 on success, -EFAULT if the line cannot be copied from user space,
+ * -ENOMEM if out of memory.
+ */
+int kutf_helper_input_enqueue(struct kutf_context *context,
+		const char __user *str, size_t size);
+
+/**
+ * kutf_helper_input_enqueue_end_of_data() - Signal no more data is to be sent
+ * @context:    KUTF context
+ *
+ * After this function has been called, kutf_helper_input_dequeue() will always
+ * return NULL.
+ */
+void kutf_helper_input_enqueue_end_of_data(struct kutf_context *context);
+
+#endif	/* _KERNEL_UTF_HELPERS_H_ */