1 /*
2 * Copyright (c) 2024, The OpenThread Authors.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. Neither the name of the copyright holder nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include "fake_coprocessor_platform.hpp"
30
31 #include <openthread/instance.h>
32 #include <openthread/link.h>
33 #include <openthread/ncp.h>
34 #include <openthread/platform/toolchain.h>
35
36 #include "common/code_utils.hpp"
37 #include "lib/hdlc/hdlc.hpp"
38 #include "lib/spinel/spinel.h"
39 #include "lib/spinel/spinel_interface.hpp"
40
41 // Currently radio spinel depends on this OpenThread user API
42 // TODO remove this dependency in future.
otLinkGetFrameCounter(otInstance *)43 OT_TOOL_WEAK uint32_t otLinkGetFrameCounter(otInstance *) { return 0; }
44
45 namespace ot {
46
SendFrame(const uint8_t * aFrame,uint16_t aLength)47 otError DirectSpinelInterface::SendFrame(const uint8_t *aFrame, uint16_t aLength)
48 {
49 otError error = OT_ERROR_NONE;
50 Spinel::FrameBuffer<kMaxFrameSize> encoderBuffer;
51 Hdlc::Encoder hdlcEncoder(encoderBuffer);
52
53 SuccessOrExit(error = hdlcEncoder.BeginFrame());
54 SuccessOrExit(error = hdlcEncoder.Encode(aFrame, aLength));
55 SuccessOrExit(error = hdlcEncoder.EndFrame());
56
57 otNcpHdlcReceive(encoderBuffer.GetFrame(), encoderBuffer.GetLength());
58
59 exit:
60 return error;
61 }
62
WaitForFrame(uint64_t aTimeoutUs)63 otError DirectSpinelInterface::WaitForFrame(uint64_t aTimeoutUs)
64 {
65 while (!mReceived && (aTimeoutUs = FakePlatform::CurrentPlatform().Run(aTimeoutUs)))
66 {
67 // Empty
68 }
69
70 Error error = mReceived ? kErrorNone : kErrorResponseTimeout;
71 mReceived = false;
72 return error;
73 }
74
Receive(const uint8_t * aBuffer,uint16_t aLength)75 int DirectSpinelInterface::Receive(const uint8_t *aBuffer, uint16_t aLength)
76 {
77 Hdlc::Decoder hdlcDecoder;
78
79 hdlcDecoder.Init(*mDecoderBuffer, &DirectSpinelInterface::OnReceived, this);
80 hdlcDecoder.Decode(aBuffer, aLength);
81
82 return aLength;
83 }
84
FakeCoprocessorPlatform()85 FakeCoprocessorPlatform::FakeCoprocessorPlatform()
86 {
87 spinel_iid_t iids[]{
88 0,
89 };
90
91 otNcpHdlcInit(mInstance, [](const uint8_t *aBuf, uint16_t aLength) -> int {
92 int rval = static_cast<FakeCoprocessorPlatform &>(FakePlatform::CurrentPlatform())
93 .mSpinelInterface.Receive(aBuf, aLength);
94 otNcpHdlcSendDone();
95 return rval;
96 });
97
98 mSpinelDriver.Init(mSpinelInterface, false, iids, OT_ARRAY_LENGTH(iids));
99
100 mRadioSpinel.Init(true, false, &mSpinelDriver, 0, false);
101 }
102
103 } // namespace ot
104