1 files changed, 69 insertions, 0 deletions

diff --git a/firmware/target/arm/tms320dm320/dsp/ipc.h b/firmware/target/arm/tms320dm320/dsp/ipc.h
new file mode 100644
index 0000000000..ada4f17f61
--- /dev/null
+++ b/firmware/target/arm/tms320dm320/dsp/ipc.h
@@ -0,0 +1,69 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2008 by Catalin Patulea
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#ifndef IPC_H
+#define IPC_H
+
+/* Inter-Processor Communication */
+
+/* Meant to be included by both DSP and ARM code. */
+#ifdef __GNUC__
+/* aligned(2) is VERY IMPORTANT. It ensures gcc generates code with "STRH"
+   instead of with "STRB". STRB in the DSP memory range is broken because
+   the HPI is in 16-bit mode. */
+#define PACKED __attribute__((packed)) __attribute__((aligned (2)))
+#else
+#define PACKED
+#endif
+
+#define PCM_SIZE 32768 /* bytes */
+
+struct sdram_buffer {
+    unsigned long addr;
+    unsigned short bytes;
+} PACKED;
+
+#define SDRAM_BUFFERS 4
+
+struct ipc_message {
+    unsigned short msg;
+    union {
+#define MSG_INIT 1
+        struct msg_init {
+            unsigned short sdem_addrl;
+            unsigned short sdem_addrh;
+        } init PACKED;
+#define MSG_DEBUGF 2
+        struct {
+            short buffer[80];
+        } debugf PACKED;
+#define MSG_REFILL 3
+        struct {
+            unsigned short topbottom; /* byte offset to unlocked half-buffer */
+
+            unsigned short _DMA_TRG;
+            unsigned short _SDEM_ADDRH;
+            unsigned short _SDEM_ADDRL;
+            unsigned short _DSP_ADDRH;
+            unsigned short _DSP_ADDRL;
+            unsigned short _DMA_SIZE;
+        } refill PACKED;
+    } payload PACKED;
+} PACKED;
+#endif