DSPLINK

转自：http://gs5689.blogbus.com/logs/34651103.html

dsplink的一些总结：

1. 环境变量
vi etc/host/scripts/Linux/dsplinkenv.bash ->
export DSPLINK=/opt/dvevm_1_10/dsplink_1_30_08_02/packages/dsplink

vi ~/bin/dsplk ->
source /opt/dvevm_1_10/dsplink_1_30_08_02/packages/dsplink/etc/host/scripts/Linux/dsplinkenv.bash

chmod u+x ~/bin/dsplk
. dsplk
/**** 用“.”或“source”执行的shell脚本运行在当前进程；否则运行在子shell进程里，无法修改当前shell的环境变量 ****/

2. GPP工具路径
vi make/Linux/davinci_mvlpro4.0.mk ->
BASE_BUILDOS := /opt/mv_pro_4.0/montavista/pro/devkit/lsp/ti-davinci
BASE_CGTOOLS := /opt/mv_pro_4.0/montavista/pro/devkit/arm/v5t_le/bin
OSINC_PLATFORM := /opt/mv_pro_4.0/montavista/pro/devkit/arm/v5t_le/lib/gcc/armv5tl-montavista-linuxeabi/3.4.3/include
OSINC_TARGET := /opt/mv_pro_4.0/montavista/pro/devkit/arm/v5t_le/target/usr/include
BASE_OSLIB := /opt/mv_pro_4.0/montavista/pro/devkit/arm/v5t_le/lib

3. DSP工具路径
vi make/DspBios/c64xxp_5.xx_linux.mk ->
BASE_INSTALL := /opt
XDCTOOLS_DIR := /opt/dvevm_1_10/xdctools_1_21
BASE_CGTOOLS := /opt/TI/cg6x_6_0_14

4. DSP/BIOS内存配置
cd dsp/inc/DspBios/Davinci
cp dsplink-davinci-base.tci.256MB dsplink-davinci-base.tci
/**** 由sample的tcf引用，不影响模块本身 ****/

5. DSPLink内存配置
vi config/all/CFG_Davinci.TXT
/**** 应与DSP内存配置保持一致，但不知有何实际用途 ****/

6. DSPLink模块配置文件
vi config/CURRENTCFG.MK
/**** 由dsplinkcfg生成 ****/

7. 编译脚本
#!/bin/sh
. dsplk
if [ "$1" = "dsp" -o "$1" = "gpp" ]
then
if [ "$2" = "-m" ]
then
source etc/host/scripts/Linux/dsplinkcfg
cd ${DSPLINK}/$1/src/
make clean
make -s
fi
cd ${DSPLINK}/$1/src/samples
#make clean
make -s
else
cd ${DSPLINK}/package/ti/dsplink/dsp/DspBios/Davinci/RELEASE/
scp *.out root@192.168.0.66:dsplink/
cd ${DSPLINK}/package/ti/dsplink/gpp/Linux/Davinci/RELEASE
scp dsplinkk.ko *gpp root@192.168.0.66:dsplink/
cd ${DSPLINK}
fi

8. 卸载、加载模块的顺序
rm -f /dev/dsplink
rmmod dsplinkk
insmod dsplinkk.ko
mknod /dev/dsplink c 230 0
/**** 若先rmmod后rm设备节点，模块会崩溃，并且无法卸载 ****/

9. 增加GPP组件
vi gpp/src/samples/net/Linux/COMPONENT ->
## 生成目标文件 ##
COMP_NAME := NET
COMP_PATH := $(GPPROOT)$(DIRSEP)src$(DIRSEP)samples$(DIRSEP)net
COMP_TYPE := EXE
COMP_TARGET := netgpp
COMP_MEMSPACE := USER
## 导出目标文件 ##
EXP_TARGETS := netgpp

vi gpp/src/samples/DIRS ->
DIRS += net

10.增加DSP组件
vi dsp/src/samples/net/DspBios/COMPONENT ->
## 生成目标文件 ##
COMP_NAME := NET
COMP_PATH := $(DSPROOT)$(DIRSEP)src$(DIRSEP)samples$(DIRSEP)net
COMP_TYPE := EXE
COMP_TARGET := net.out
## 导出目标文件 ##
EXP_TARGETS := net.out

vi dsp/src/samples/DIRS ->
DIRS += net


11.GPP端加入源文件（以自定义的UDP打包函数为例）
cp /media/win/Projects/examples/udplib/udplib.cpp gpp/src/samples/net/Linux/udplib.c
cp /media/win/Projects/examples/udplib/udplib.h gpp/src/samples/net/Linux/udplib.h

vi gpp/src/samples/net/Linux/COMPONENT ->
EXP_HEADERS := loop.h \
Linux/loop_os.h \
Linux/udplib.h
vi gpp/src/samples/net/Linux/SOURCES ->
SOURCES := loop_os.c \
udplib.c \
main.c

12.CHNL驱动之ARM篇
EXPORT_API
DSP_STATUS
CHNL_AllocateBuffer (IN ProcessorId procId,
IN ChannelId chnlId,
OUT Char8 ** bufArray,
IN Uint32 size,
IN Uint32 numBufs) ;

EXPORT_API
DSP_STATUS
CHNL_Issue (IN ProcessorId procId,
IN ChannelId chnlId,
IN ChannelIOInfo * ioReq) ;

EXPORT_API
DSP_STATUS
CHNL_Reclaim (IN ProcessorId procId,
IN ChannelId chnlId,
IN Uint32 timeout,
IN OUT ChannelIOInfo * ioReq) ;
/**** 与DSP端使用GIO还是SIO无关 ****/

13.CHNL驱动之GIO篇
#define DSPLINK_alloc(poolId, bufPtr, size) \
(((POOL->allocators [poolId]).fxns->alloc) \
(POOL->allocators [poolId].object, \
bufPtr, \
size))

vi dsp/src/samples/net/swiLoop.c ->
void switx(Arg arg0, Arg arg1)
{
SWILOOP_TransferInfo * info = (SWILOOP_TransferInfo *) arg0;

(Void) arg1 ; /* To remove compiler warning */

GIO_submit (info->gioOutputChan,
IOM_WRITE,
info->outputBuffer,
(size_t *) &(info->bufferSize),
&(info->appWriteCb)) ;
}
/**** 异步GIO能用于SWI ****/

14.CHNL驱动之SIO篇
#define DSPLINK_alloc(poolId, bufPtr, size) \
(((POOL->allocators [poolId]).fxns->alloc) \
(POOL->allocators [poolId].object, \
bufPtr, \
size))

vi dsp/src/samples/net/tskLoop.c ->
void tsktx(TSKLOOP_TransferInfo * info){
Arg arg = 0 ;

SIO_issue(info->outputStream,
info->buffers [0],
info->bufferSize,
arg);
SIO_reclaim (info->outputStream,
(Ptr *) &(info->buffers [0]),
&arg) ;
}
/**** 同步SIO只能用于TSK ****/
/**** 包含SIO的TSK可同步地执行算法，相当于CE中调用process函数 ****/

15.Issue/Reclaim模型
/**** Put/Get模型会自动分配内置交换缓冲，Issue/Reclaim不会 ****/
/**** Issue 不论收/发，向CHNL的另一端传入指针，非阻塞 ****/
/**** Reclaim 不论收/发，从CHNL的另一端传出指针，I/O阻塞 ****/
/**** Issue与Reclaim一起使用，可达到Put或Get的效果 ****/
/**** Issue与Reclaim分开使用，可提供一定的缓冲深度 ****/

16.Tconf
vi dsp/src/samples/net/loop.tci ->
var tsk0 = bios.TSK.create("tsk0");
tsk0.fxn = prog.extern("tskLoop");

var swi0 = bios.SWI.create("swi0");
swi0.fxn = prog.extern("switx");
swi0.arg0 = prog.extern("info");

vi dsp/src/samples/net/swiLoop.c ->
extern far SWI_Obj swi0;
SWI_post(&swi0);

/**** 在tci里面添加模块比在程序中调用API动态添加更方便，而且对程序结构的简化也很有帮助 ****/
/**** BIOS模块和API相关内容参考TI文档 ****/
/**** typedef struct SWI_Obj SWI_Handle; ****/
/**** loop.tci由dsp/src/samples/net/DspBios/Davinci/loop.tcf引用 ****/