Change create network UAPI to take a user buffer

To not allow the buffer for a network instance to be changed after
creation, the create network UAPI will now take the network model data
as a user buffer. The content of the user buffer is copied into an
internally allocated DMA buffer that cannot be accessed by the user.

This breaks the current API so the Linux kernel NPU driver version and
the driver library version have been given major version bumps. All the
tests, documentation and other applications affected by the changes have
been updated accordingly.

Change-Id: I25c785d75a24794c3db632e4abe5cfbb1c7ac190
Signed-off-by: Mikael Olsson <mikael.olsson@arm.com>

1 files changed, 14 insertions, 9 deletions

diff --git a/driver_library/python/src/ethosu_driver/swig/typemaps/buffer.i b/driver_library/python/src/ethosu_driver/swig/typemaps/buffer.i
index 13b7909..bb4627c 100644
--- a/driver_library/python/src/ethosu_driver/swig/typemaps/buffer.i
+++ b/driver_library/python/src/ethosu_driver/swig/typemaps/buffer.i
@@ -1,19 +1,25 @@
 //
-// SPDX-FileCopyrightText: Copyright 2021-2022 Arm Limited and/or its affiliates <open-source-office@arm.com>
+// SPDX-FileCopyrightText: Copyright 2021-2023 Arm Limited and/or its affiliates <open-source-office@arm.com>
 // SPDX-License-Identifier: Apache-2.0
 //
-%define %mutable_buffer(TYPEMAP, SIZE)
+
+%define BUFFER_FLAG_RO 0 %enddef
+%define BUFFER_FLAG_RW PyBUF_WRITABLE %enddef
+
+%define %buffer_in(TYPEMAP, SIZE, FLAG)
     %typemap(in) (TYPEMAP, SIZE) {
-      int res; void *buf = 0; size_t size = 0;
       Py_buffer view;
-      res = PyObject_GetBuffer($input, &view, PyBUF_WRITABLE);
-      buf = view.buf;
-      size = view.len;
-      PyBuffer_Release(&view);
+
+      int res = PyObject_GetBuffer($input, &view, FLAG);
       if (res < 0) {
         PyErr_Clear();
         %argument_fail(res, "(TYPEMAP, SIZE)", $symname, $argnum);
       }
+
+      void *buf = view.buf;
+      size_t size = view.len;
+      PyBuffer_Release(&view);
+
       $1 = ($1_ltype) buf;
       $2 = ($2_ltype) size;
     }
@@ -23,12 +29,11 @@
     }
 %enddef
 
-%define %clear_mutable_buffer(TYPEMAP, SIZE)
+%define %clear_buffer_in(TYPEMAP, SIZE)
     %typemap(in) (TYPEMAP, SIZE);
     %typemap(typecheck) (TYPEMAP, SIZE);
 %enddef
 
-
 %define %driver_buffer_out
     %typemap(out) (char*) {
         auto size = arg1->size();