a try to add support of FreeRTOS riscV-64 (k210 cpu). first step

1 files changed, 155 insertions, 0 deletions

diff --git a/libiot/sys/mutex.c b/libiot/sys/mutex.c
new file mode 100644
index 0000000..6c63fe3
--- /dev/null
+++ b/libiot/sys/mutex.c
@@ -0,0 +1,155 @@
+/*
+ * Copyright (C) 2015 - 2018, IBEROXARXA SERVICIOS INTEGRALES, S.L.
+ * Copyright (C) 2015 - 2018, Jaume Olivé Petrus (jolive@whitecatboard.org)
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the <organization> nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *     * The WHITECAT logotype cannot be changed, you can remove it, but you
+ *       cannot change it in any way. The WHITECAT logotype is:
+ *
+ *          /\       /\
+ *         /  \_____/  \
+ *        /_____________\
+ *        W H I T E C A T
+ *
+ *     * Redistributions in binary form must retain all copyright notices printed
+ *       to any local or remote output device. This include any reference to
+ *       Lua RTOS, whitecatboard.org, Lua, and other copyright notices that may
+ *       appear in the future.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Lua RTOS mutex api implementation over FreeRTOS
+ *
+ */
+
+//#include "sdkconfig.h"
+#include <FreeRTOS.h>
+#include "../freertos/adds.h"
+
+//#include "esp_attr.h"
+
+#include "mutex.h"
+#include "panic.h"
+
+int mtx_inited(struct mtx *mutex) {
+    return (mutex->lock != 0);
+}
+
+void mtx_init(struct mtx *mutex, const char *name, const char *type, int opts) {
+    mutex->opts = opts;
+
+    if (mutex->opts == MTX_DEF) {
+        mutex->lock = xSemaphoreCreateBinary();
+    } else if (opts == MTX_RECURSE) {
+        mutex->lock = xSemaphoreCreateRecursiveMutex();
+    } else {
+        return;
+    }
+
+    if (mutex->lock) {
+#if 0 //{}
+        if (xPortInIsrContext()) {
+            BaseType_t xHigherPriorityTaskWoken = pdFALSE;
+            xSemaphoreGiveFromISR( mutex->lock, &xHigherPriorityTaskWoken);
+            portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );
+        } else {
+#endif
+            if (mutex->opts == MTX_DEF) {
+                xSemaphoreGive( mutex->lock );
+            }
+//{}        }
+    }    
+}
+
+void mtx_lock(struct mtx *mutex) {
+#if 0 //{}
+    if (xPortInIsrContext()) {
+        BaseType_t xHigherPriorityTaskWoken = pdFALSE;
+        xSemaphoreTakeFromISR( mutex->lock, &xHigherPriorityTaskWoken );
+        portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );
+    } else {
+#endif
+        if (mutex->opts == MTX_DEF) {
+            xSemaphoreTake( mutex->lock, portMAX_DELAY );
+        } else if (mutex->opts == MTX_RECURSE) {
+            xSemaphoreTakeRecursive( mutex->lock, portMAX_DELAY );
+        }
+//{}    }
+}
+
+int mtx_trylock(struct mtx *mutex) {
+    if (mutex->opts == MTX_DEF) {
+        if (xSemaphoreTake( mutex->lock, 0 ) == pdTRUE) {
+            return 1;
+        } else {
+            return 0;
+        }
+    } else if (mutex->opts == MTX_RECURSE) {
+        if (xSemaphoreTakeRecursive( mutex->lock, 0 ) == pdTRUE) {
+            return 1;
+        } else {
+            return 0;
+        }
+    }
+
+    return 0;
+}
+
+void mtx_unlock(struct mtx *mutex) {
+#if 0 //{}
+    if (xPortInIsrContext()) {
+        BaseType_t xHigherPriorityTaskWoken = pdFALSE;  
+        xSemaphoreGiveFromISR( mutex->lock, &xHigherPriorityTaskWoken );
+        portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );
+    } else {
+#endif
+        if (mutex->opts == MTX_DEF) {
+            xSemaphoreGive( mutex->lock );
+        } else if (mutex->opts == MTX_RECURSE) {
+            xSemaphoreGiveRecursive( mutex->lock );
+        }
+//{}    }
+}
+
+void mtx_destroy(struct mtx *mutex) {
+    if (!mutex->lock) return;
+
+    if (mutex->opts == MTX_DEF) {
+#if 0 //{}
+        if (xPortInIsrContext()) {
+            BaseType_t xHigherPriorityTaskWoken = pdFALSE;
+            xSemaphoreGiveFromISR( mutex->lock, &xHigherPriorityTaskWoken );
+            portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );
+        } else {
+#endif
+            xSemaphoreGive( mutex->lock );
+//{}        }
+
+        vSemaphoreDelete( mutex->lock );
+    } else if (mutex->opts == MTX_RECURSE) {
+        vSemaphoreDelete( mutex->lock );
+    }
+
+    mutex->lock = 0;
+}