qpcpp/zephyr/qp_port.hpp
2024-11-02 15:38:10 -04:00

119 lines
4.3 KiB
C++

//============================================================================
// Copyright (C) 2005 Quantum Leaps, LLC. All rights reserved.
//
// Q u a n t u m L e a P s
// ------------------------
// Modern Embedded Software
//
// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-QL-commercial
//
// The QP/C software is dual-licensed under the terms of the open-source GNU
// General Public License (GPL) or under the terms of one of the closed-
// source Quantum Leaps commercial licenses.
//
// Redistributions in source code must retain this top-level comment block.
// Plagiarizing this software to sidestep the license obligations is illegal.
//
// NOTE:
// The GPL (see <www.gnu.org/licenses/gpl-3.0>) does NOT permit the
// incorporation of the QP/C software into proprietary programs. Please
// contact Quantum Leaps for commercial licensing options, which expressly
// supersede the GPL and are designed explicitly for licensees interested
// in using QP/C in closed-source proprietary applications.
//
// Quantum Leaps contact information:
// <www.state-machine.com/licensing>
// <info@state-machine.com>
//============================================================================
//! @date Last updated on: 2023-09-07
//! @version Last updated for: @ref qpcpp_7_3_0
//!
//! @file
//! @brief QP/C++ port to Zephyr RTOS 3.4
#ifndef QP_PORT_HPP_
#define QP_PORT_HPP_
#include <cstdint> // Exact-width types. C++11 Standard
#include <zephyr/kernel.h> // Zephyr kernel API
#include "qp_config.hpp" // QP configuration from the application
// no-return function specifier (C++11 Standard)
#define Q_NORETURN [[ noreturn ]] void
// QActive event queue and thread types
#define QACTIVE_EQUEUE_TYPE struct k_msgq
#define QACTIVE_THREAD_TYPE struct k_thread
// QF critical section entry/exit for Zephyr, see NOTE1/
#define QF_CRIT_STAT k_spinlock_key_t key_;
#define QF_CRIT_ENTRY() ((key_) = k_spin_lock(&QP::QF::spinlock))
#define QF_CRIT_EXIT() k_spin_unlock(&QP::QF::spinlock, key_)
// Q_PRINTK() macro to avoid conflicts with Zephyr's printk()
// when Q_SPY configuration is used
#ifndef Q_SPY
#define Q_PRINTK(fmt_, ...) printk(fmt_, ##__VA_ARGS__)
#else
#define Q_PRINTK(dummy, ...) (static_cast<void>(0))
#endif
// include files -------------------------------------------------------------
#include "qequeue.hpp" // used for event deferral
#include "qmpool.hpp" // this QP port uses the native QF memory pool
#include "qp.hpp" // QP platform-independent public interface
namespace QP {
namespace QF {
// Zephyr spinlock for QF critical section
extern struct k_spinlock spinlock;
} // namespace QF
} // namespace QP
//============================================================================
// interface used only inside QF implementation, but not in applications
#ifdef QP_IMPL
// scheduler locking, see NOTE2
#define QF_SCHED_STAT_
#define QF_SCHED_LOCK_(dummy) do { \
if (!k_is_in_isr()) { \
k_sched_lock(); \
} \
} while (false)
#define QF_SCHED_UNLOCK_() do { \
if (!k_is_in_isr()) { \
k_sched_unlock(); \
} \
} while (false)
// native QF event pool customization
#define QF_EPOOL_TYPE_ QMPool
#define QF_EPOOL_INIT_(p_, poolSto_, poolSize_, evtSize_) \
(p_).init((poolSto_), (poolSize_), (evtSize_))
#define QF_EPOOL_EVENT_SIZE_(p_) ((p_).getBlockSize())
#define QF_EPOOL_GET_(p_, e_, m_, qsId_) \
((e_) = static_cast<QEvt *>((p_).get((m_), (qsId_))))
#define QF_EPOOL_PUT_(p_, e_, qsId_) ((p_).put((e_), (qsId_)))
#endif // QP_IMPL
//============================================================================
// NOTE1:
// This QP port to Zephyr assumes that Active Objects will use only the
// preemptive Zephyr priorities [0..(CONFIG_NUM_PREEMPT_PRIORITIES - 1U)].
// In this priority numbering, the QP AO priority QF_MAX_ACTIVE (highest)
// maps to Zephyr priority 0 (highest). The QP AO priority 1 (lowest) maps
// to Zephyr priority (CONFIG_NUM_PREEMPT_PRIORITIES - 2U).
//
// NOTE2:
// Zephyr does not support selective scheduler locking up to a given
// priority ceiling. Therefore, this port uses global Zephyr scheduler lock.
//
#endif // QP_PORT_HPP_