Autumn clean/refactor of NPU driver

A continuation of the spring clean/refactor work. Create a
better separation between driver and device(s).

A short summary of what this commit contains:
    - Split device and driver
    - Simplify and hide the internal device interface
    - Remove (broken) abort inference functionality
    - Refactoring of structure
    - Optimizations and bugfixes

Change-Id: I8988bc5f163f9ea62add2a933e4f100a82cc8d35

1 files changed, 32 insertions, 0 deletions

diff --git a/src/ethosu_interface.h b/src/ethosu_interface.h
new file mode 100644
index 0000000..2409cb4
--- /dev/null
+++ b/src/ethosu_interface.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2020-2021 Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// clang-format off
+#ifndef ETHOSU_INTERFACE_WRAPPER_
+#define ETHOSU_INTERFACE_WRAPPER_
+
+#define xstr(a) str(a)
+#define str(a)  #a
+
+#define catm(a, b)  catm_(a, b)
+#define catm_(a, b) a##b
+
+#define ETHOSU_INTERFACE_FILE xstr(catm(ethos, ETHOSU_ARCH)_interface.h)
+
+#include ETHOSU_INTERFACE_FILE
+
+#endif // ETHOSU_INTERFACE_WRAPPER_