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Diffstat (limited to 'applications/message_handler/lib/message_queue.cpp')
-rw-r--r-- | applications/message_handler/lib/message_queue.cpp | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/applications/message_handler/lib/message_queue.cpp b/applications/message_handler/lib/message_queue.cpp deleted file mode 100644 index 4001f8c..0000000 --- a/applications/message_handler/lib/message_queue.cpp +++ /dev/null @@ -1,151 +0,0 @@ -/* - * Copyright (c) 2020-2022 Arm Limited. - * - * 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. - */ - -#include "message_queue.hpp" - -#include <cstddef> -#include <cstdio> -#include <cstring> -#include <inttypes.h> - -namespace MessageQueue { - -QueueImpl::QueueImpl(EthosU::ethosu_core_queue &_queue) : queue(_queue) { - cleanHeaderData(); -} - -bool QueueImpl::empty() const { - invalidateHeaderData(); - - return queue.header.read == queue.header.write; -} - -size_t QueueImpl::available() const { - invalidateHeaderData(); - - size_t avail = queue.header.write - queue.header.read; - - if (queue.header.read > queue.header.write) { - avail += queue.header.size; - } - - return avail; -} - -size_t QueueImpl::capacity() const { - return queue.header.size - available() - 1; -} - -bool QueueImpl::read(uint8_t *dst, uint32_t length) { - const uint8_t *end = dst + length; - - // Available will invalidate the cache - if (length > available()) { - return false; - } - - uint32_t rpos = queue.header.read; - - while (dst < end) { - *dst++ = queue.data[rpos]; - rpos = (rpos + 1) % queue.header.size; - } - - queue.header.read = rpos; - - cleanHeader(); - - return true; -} - -bool QueueImpl::write(const Vec *vec, size_t length) { - size_t total = 0; - - for (size_t i = 0; i < length; i++) { - total += vec[i].length; - } - - invalidateHeader(); - - if (total > capacity()) { - return false; - } - - uint32_t wpos = queue.header.write; - - for (size_t i = 0; i < length; i++) { - const uint8_t *src = reinterpret_cast<const uint8_t *>(vec[i].base); - const uint8_t *end = src + vec[i].length; - - while (src < end) { - queue.data[wpos] = *src++; - wpos = (wpos + 1) % queue.header.size; - } - } - - // Update the write position last - queue.header.write = wpos; - - cleanHeaderData(); - - return true; -} - -bool QueueImpl::write(const uint32_t type, const void *src, uint32_t length) { - EthosU::ethosu_core_msg msg = {ETHOSU_CORE_MSG_MAGIC, type, length}; - Vec vec[2] = {{&msg, sizeof(msg)}, {src, length}}; - - return write(vec, 2); -} - -// Skip to magic or end of queue -void QueueImpl::reset() { - invalidateHeader(); - queue.header.read = queue.header.write; - cleanHeader(); -} - -void QueueImpl::cleanHeader() const { -#if defined(__DCACHE_PRESENT) && (__DCACHE_PRESENT == 1U) - SCB_CleanDCache_by_Addr(reinterpret_cast<uint32_t *>(&queue.header), sizeof(queue.header)); -#endif -} - -void QueueImpl::cleanHeaderData() const { -#if defined(__DCACHE_PRESENT) && (__DCACHE_PRESENT == 1U) - SCB_CleanDCache_by_Addr(reinterpret_cast<uint32_t *>(&queue.header), sizeof(queue.header)); - uintptr_t queueDataPtr = reinterpret_cast<uintptr_t>(&queue.data[0]); - SCB_CleanDCache_by_Addr(reinterpret_cast<uint32_t *>(queueDataPtr & ~3), queue.header.size + (queueDataPtr & 3)); -#endif -} - -void QueueImpl::invalidateHeader() const { -#if defined(__DCACHE_PRESENT) && (__DCACHE_PRESENT == 1U) - SCB_InvalidateDCache_by_Addr(reinterpret_cast<uint32_t *>(&queue.header), sizeof(queue.header)); -#endif -} - -void QueueImpl::invalidateHeaderData() const { -#if defined(__DCACHE_PRESENT) && (__DCACHE_PRESENT == 1U) - SCB_InvalidateDCache_by_Addr(reinterpret_cast<uint32_t *>(&queue.header), sizeof(queue.header)); - uintptr_t queueDataPtr = reinterpret_cast<uintptr_t>(&queue.data[0]); - SCB_InvalidateDCache_by_Addr(reinterpret_cast<uint32_t *>(queueDataPtr & ~3), - queue.header.size + (queueDataPtr & 3)); -#endif -} -} // namespace MessageQueue |