1 files changed, 107 insertions, 0 deletions
diff --git a/hifi/xaf/hifi-dpf/core/xf-msg.c b/hifi/xaf/hifi-dpf/core/xf-msg.c
new file mode 100644
index 00000000..4253e1e3
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/core/xf-msg.c
@@ -0,0 +1,107 @@
+/*******************************************************************************
+* 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-msg.c
+ *
+ * Message/message pool handling
+ *
+ ******************************************************************************/
+
+#define MODULE_TAG                      MSG
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xf.h"
+
+/*******************************************************************************
+ * Entry points
+ ******************************************************************************/
+
+/* ...allocate message pool */
+int xf_msg_pool_init(xf_msg_pool_t *pool, u32 n, u32 core)
+{   
+    u32     i;
+    
+    /* ...allocate shared memory from global pool */
+    XF_CHK_ERR(pool->p = xf_mem_alloc(XF_MM(sizeof(*pool->p) * n), XF_PROXY_ALIGNMENT, core, 1), -ENOMEM);
+    
+    /* ...place all messages into single-liked list */
+    for (pool->head = &pool->p[i = 0]; i < n - 1; i++)
+    {
+        /* ...set message pointer to next message in the pool */
+        xf_msg_pool_item(pool, i)->next = xf_msg_pool_item(pool, i + 1);
+    }
+    
+    /* ...set tail of the list */
+    xf_msg_pool_item(pool, i)->next = NULL;
+
+    /* ...save pool size */
+    pool->n = n;
+    
+    return 0;
+}
+
+/* ...destroy memory pool */
+void xf_msg_pool_destroy(xf_msg_pool_t *pool, u32 core)
+{
+    /* ...release pool memory (from shared local-IPC memory) */
+    xf_mem_free(pool->p, XF_MM(sizeof(*pool->p) * pool->n), core, 1);
+}
+
+/* ...allocate message from a pool (no concurrent access from other cores) */
+xf_message_t * xf_msg_pool_get(xf_msg_pool_t *pool)
+{
+    __xf_message_t  *_m;
+    
+    /* ...pop message from the head of the pool */
+    XF_CHK_ERR(_m = pool->head, NULL);
+    
+    /* ...advance list head */
+    pool->head = (__xf_message_t *)(((xf_message_t *) _m)->next);
+
+    /* ...debug - wipe out message "next" pointer */
+    ((xf_message_t *) _m)->next = NULL;
+    
+    /* ...return properly aligned message pointer */
+    return (xf_message_t *) _m;
+}
+
+/* ...return message back to the pool (no concurrent access from other cores) */
+void xf_msg_pool_put(xf_msg_pool_t *pool, xf_message_t *m)
+{
+    __xf_message_t  *_m = (__xf_message_t *) m;
+    
+    /* ...make sure the message is properly aligned object */
+    BUG(!XF_IS_ALIGNED(_m), _x("Corrupted message pointer: %p"), _m);
+    
+    /* ...make sure it is returned to the same pool (need a length for that - tbd) */
+    BUG(!xf_msg_from_pool(pool, m) < 0, _x("Bad pool/message: %p/%p"), pool->p, _m);
+
+    /* ...place message into the head */
+    m->next = (xf_message_t *) pool->head;
+    
+    /* ...advance pool head */
+    pool->head = _m;
+}