esp32: Move hardware crypto implementation/headers to hwcrypto directories

components/esp32/hwcrypto/esp_crypto.c

@@ -0,0 +1,66 @@
+#include "esp_crypto.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/semphr.h"
+
+static SemaphoreHandle_t esp_crypto_mutex[MUTEX_MAX_NUM];
+static int esp_crypto_sig[MUTEX_MAX_NUM];
+
+#if 0
+#define ESP_DEBUG ets_printf
+#else
+#define ESP_DEBUG(...)
+#endif
+
+int esp_crypto_init(void)
+{
+    int i;
+
+    for (i = 0; i < MUTEX_MAX_NUM; i++) {
+        esp_crypto_mutex[i] = xSemaphoreCreateMutex();
+        ESP_DEBUG("init num %d mutex %p\n", i, esp_crypto_mutex[i]);
+        if (!esp_crypto_mutex[i]) {
+            goto failed1;
+        }
+        esp_crypto_sig[i] = 0;
+    }
+
+    return 0;
+
+failed1:
+    ESP_DEBUG("esp_crypto_init failed\n");
+    for (i--; i >= 0; i--) {
+        vQueueDelete(esp_crypto_mutex[i]);
+    }
+
+    return -1;
+}
+
+void esp_crypto_lock(unsigned int num)
+{
+    ESP_DEBUG("1num %d, mutex %p\n", num, esp_crypto_mutex[num]);
+    xSemaphoreTake(esp_crypto_mutex[num], portMAX_DELAY);
+}
+
+void esp_crypto_unlock(unsigned int num)
+{
+    ESP_DEBUG("2num %d, mutex %p\n", num, esp_crypto_mutex[num]);
+    xSemaphoreGive(esp_crypto_mutex[num]);
+}
+
+void esp_crypto_take(unsigned int num)
+{
+    esp_crypto_sig[num]++;
+}
+
+void esp_crypto_give(unsigned int num)
+{
+    if (esp_crypto_sig[num]) {
+        esp_crypto_sig[num]--;
+    }
+}
+
+bool esp_crypto_is_used(unsigned int num)
+{
+    return (esp_crypto_sig[num] != 0) ? true : false;
+}
+