move sboot to the root directory

[open-ath9k-htc-firmware.git] / sboot / magpie_1_1 / sboot / vbuf / src / vbuf.c

diff --git a/sboot/magpie_1_1/sboot/vbuf/src/vbuf.c b/sboot/magpie_1_1/sboot/vbuf/src/vbuf.c
new file mode 100755 (executable)
index 0000000..9360da0
--- /dev/null
+++ b/sboot/magpie_1_1/sboot/vbuf/src/vbuf.c
@@ -0,0 +1,124 @@
+/*
+ * Copyright (c) 2013 Qualcomm Atheros, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted (subject to the limitations in the
+ * disclaimer below) 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 Qualcomm Atheros nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
+ * GRANTED BY THIS LICENSE.  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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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.
+ */
+/*
+ * @File: vbuf.c
+ * 
+ * @Abstract: 
+ * 
+ * @Notes:
+ */
+
+
+#include <osapi.h>
+#include <vbuf_api.h>
+#include <Magpie_api.h>
+
+#include "vbuf.h"
+
+#define VBUF_SIZE           sizeof(VBUF)
+
+struct VBUF_CONTEXT g_vbufCtx;
+
+void _vbuf_init(int nBuf);
+VBUF* _vbuf_alloc_vbuf(void);
+void _vbuf_free_vbuf(VBUF *buf);
+
+void _vbuf_init(int nBuf) 
+{
+    int i;
+    VBUF *vbuf;
+    
+    //vbuf = (VBUF*)dataAddr;
+    vbuf = (VBUF*)A_ALLOCRAM(VBUF_SIZE);
+    vbuf->next_buf = NULL;
+    vbuf->desc_list = NULL;
+                    
+    g_vbufCtx.free_buf_head = vbuf;
+    
+    for(i=1; i<nBuf; i++)
+    {
+        //vbuf = (VBUF*)(dataAddr + i*VBUF_SIZE);
+        vbuf = (VBUF*)A_ALLOCRAM(VBUF_SIZE);
+        
+        vbuf->desc_list = NULL;
+        vbuf->next_buf = g_vbufCtx.free_buf_head;
+        g_vbufCtx.free_buf_head = vbuf;
+    }    
+    
+    g_vbufCtx.nVbufNum = nBuf;
+    //return (dataAddr + nBuf*VBUF_SIZE);
+    return;
+}
+
+VBUF* _vbuf_alloc_vbuf(void)
+{
+    VBUF *allocBuf = NULL;
+    
+    if ( g_vbufCtx.free_buf_head != NULL )
+    {
+        allocBuf = g_vbufCtx.free_buf_head;
+        g_vbufCtx.nVbufNum--;
+        
+        g_vbufCtx.free_buf_head = allocBuf->next_buf;
+        allocBuf->next_buf = NULL;        
+    }
+    
+    return allocBuf;
+}
+
+void _vbuf_free_vbuf(VBUF *buf)
+{
+    // assert buf != NULL
+    
+    buf->next_buf = g_vbufCtx.free_buf_head;
+    g_vbufCtx.free_buf_head = buf;
+    
+    g_vbufCtx.nVbufNum++;
+}
+
+/* the exported entry point into this module. All apis are accessed through
+ * function pointers */
+void vbuf_module_install(struct vbuf_api *apis)
+{    
+        /* hook in APIs */
+    apis->_init = _vbuf_init;
+    apis->_alloc_vbuf = _vbuf_alloc_vbuf;
+    apis->_free_vbuf = _vbuf_free_vbuf;
+    
+        /* save ptr to the ptr to the context for external code to inspect/modify internal module state */
+    //apis->pReserved = &g_pMboxHWContext;
+}
+ 
+