diff options
author | Maurus Cuelenaere <mcuelenaere@gmail.com> | 2008-05-16 21:16:01 +0000 |
---|---|---|
committer | Maurus Cuelenaere <mcuelenaere@gmail.com> | 2008-05-16 21:16:01 +0000 |
commit | ac67d701738733035d051312f48a05963e1e0d80 (patch) | |
tree | 66ea7b89e1f39c00c1683e809f69dd30f01fcc07 /firmware/target/arm/tms320dm320/dsp/ipc.h | |
parent | 7a8fc3fd9db99fa16976baf7e78059ad766a3ce5 (diff) | |
download | rockbox-ac67d701738733035d051312f48a05963e1e0d80.tar.gz rockbox-ac67d701738733035d051312f48a05963e1e0d80.zip |
Add beginning of DSP code (done by Catalin Patulea), but don't enable it
yet as there's no C54xx compiler in the toolchain yet..
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17547 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/target/arm/tms320dm320/dsp/ipc.h')
-rw-r--r-- | firmware/target/arm/tms320dm320/dsp/ipc.h | 69 |
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 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2008 by Catalin Patulea | ||
11 | * | ||
12 | * All files in this archive are subject to the GNU General Public License. | ||
13 | * See the file COPYING in the source tree root for full license agreement. | ||
14 | * | ||
15 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
16 | * KIND, either express or implied. | ||
17 | * | ||
18 | ****************************************************************************/ | ||
19 | |||
20 | #ifndef IPC_H | ||
21 | #define IPC_H | ||
22 | |||
23 | /* Inter-Processor Communication */ | ||
24 | |||
25 | /* Meant to be included by both DSP and ARM code. */ | ||
26 | #ifdef __GNUC__ | ||
27 | /* aligned(2) is VERY IMPORTANT. It ensures gcc generates code with "STRH" | ||
28 | instead of with "STRB". STRB in the DSP memory range is broken because | ||
29 | the HPI is in 16-bit mode. */ | ||
30 | #define PACKED __attribute__((packed)) __attribute__((aligned (2))) | ||
31 | #else | ||
32 | #define PACKED | ||
33 | #endif | ||
34 | |||
35 | #define PCM_SIZE 32768 /* bytes */ | ||
36 | |||
37 | struct sdram_buffer { | ||
38 | unsigned long addr; | ||
39 | unsigned short bytes; | ||
40 | } PACKED; | ||
41 | |||
42 | #define SDRAM_BUFFERS 4 | ||
43 | |||
44 | struct ipc_message { | ||
45 | unsigned short msg; | ||
46 | union { | ||
47 | #define MSG_INIT 1 | ||
48 | struct msg_init { | ||
49 | unsigned short sdem_addrl; | ||
50 | unsigned short sdem_addrh; | ||
51 | } init PACKED; | ||
52 | #define MSG_DEBUGF 2 | ||
53 | struct { | ||
54 | short buffer[80]; | ||
55 | } debugf PACKED; | ||
56 | #define MSG_REFILL 3 | ||
57 | struct { | ||
58 | unsigned short topbottom; /* byte offset to unlocked half-buffer */ | ||
59 | |||
60 | unsigned short _DMA_TRG; | ||
61 | unsigned short _SDEM_ADDRH; | ||
62 | unsigned short _SDEM_ADDRL; | ||
63 | unsigned short _DSP_ADDRH; | ||
64 | unsigned short _DSP_ADDRL; | ||
65 | unsigned short _DMA_SIZE; | ||
66 | } refill PACKED; | ||
67 | } payload PACKED; | ||
68 | } PACKED; | ||
69 | #endif | ||