1 files changed, 68 insertions, 0 deletions
diff --git a/hifi/xaf/hifi-dpf/core/xf-isr.c b/hifi/xaf/hifi-dpf/core/xf-isr.c
new file mode 100644
index 00000000..4e2add1e
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/core/xf-isr.c
@@ -0,0 +1,68 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-isr.c
+ *
+ * DSP processing framework - code running from interrupt context
+ *
+ ******************************************************************************/
+
+#define MODULE_TAG                      ISR
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xf.h"
+
+/*******************************************************************************
+ * API functions definitions
+ ******************************************************************************/
+
+/* ...submit command message from interrupt context on local core */
+void xf_msg_schedule_isr(xf_message_t *m)
+{
+    u32                 core = XF_MSG_DST_CORE(m->id);
+    xf_core_data_t     *cd = XF_CORE_DATA(core);
+    
+    /* ...interrupt masking protocol is used for protecting local message queue */
+    if (xf_msg_enqueue(&cd->queue, m))
+    {
+        /* ...resume local scheduler if that is the first message */
+        xf_ipi_resume(core);
+    }
+}
+
+/* ...complete message from interrupt handler */
+void xf_msg_complete_isr(xf_message_t *m)
+{
+    u32                 core = XF_MSG_DST_CORE(m->id);
+    xf_core_data_t     *cd = XF_CORE_DATA(core);
+
+    /* ...place message into response queue */
+    if (xf_msg_enqueue(&cd->response, m))
+    {
+        /* ...notify local scheduler if that is the first message */
+        xf_ipi_resume(core);
+    }
+}