RTOS/TMDSEVM6678: How to control priority of SWI used for IPC?

Hi Eric,

I've forwarded this to the IPC experts. Their feedback should be posted here.

BR
Tsvetolin Shulev

Eric,

Have you tried to lower the TransportShm_swiFxn task by updating the TransportShm_Instance_init() in packages/ti/sdo/ipc/transports/TransportShm.c? e.g.

   Swi_Params_init(&swiParams);

   swiParams.arg0 = (UArg)obj;

    swiParams.priority = 14;

   Swi_construct(Swi_struct(swiHandle),

                (Swi_FuncPtr)TransportShm_swiFxn,

                &swiParams, eb);

Regards, Garrett

Hello Garrett,

Thank you for your suggestion!  I found the code you were referring to, and made the change.  Unfortunately, I haven't been able to successfully rebuild my IPC library (I have never tried rebuilding any of the SDK prior to this).  I will keep trying.

Regards, Eric

I'm still unable to rebuild the IPC library. Below are my modifications to the IPC products.mak file.

DEPOT = C:/ti
PLATFORM = C6678
DESTDIR = C:/Temp/Temp
XDC_INSTALL_DIR = $(DEPOT)/xdctools_3_32_02_25_core
BIOS_INSTALL_DIR = $(DEPOT)/bios_6_46_04_53
ti.targets.elf.C66 = $(DEPOT)/ccsv7/tools/compiler/ti-cgt-c6000_8.1.3

I then start the build, per the Install Guide, with the command:

C:\ti_mine\ipc_3_44_01_01>make -f ipc-bios.mak all

It then outputs about 580 lines of status, but then completely stalls, with the last few lines output being:

configuring instrumented.pe66 from package/cfg/instrumented_pe66.cfg ...
generating custom ti.sdo.ipc library makefile ...
Starting build of library sources ...

Any idea as to what might be going wrong with this?

Eric,

Have you tried to use the xdctools_3_32_01_22_core (from Processor SDK 3.3 release) instead of xdctools_3_32_02_25_core?

The PRSDK 3.3 component version can be found at processors.wiki.ti.com/index.php

Regards, Garrett

Per your recommendation, I set XDC_INSTALL_DIR = $(DEPOT)/xdctools_3_32_01_22_core

I than ran "make -f ipc-bios.mak clean", followed by "make -f ipc-bios.mak all"

Unfortunately, the make all still hung at the same output line "Starting build of library sources ..."

Eric,

>>C:\ti_mine\ipc_3_44_01_01

Were you building the library in a Windows machine? Please try it on Linux.

Regards, Garrett

Hi Garret,

Thank you for your suggestion. We are pretty much a Windows shop here. I have relatively scant Linux experience, and my experience with TI on Linux is zilch. But I will look into trying to build the IPC on Linux.

What would REALLY be sweet is if the fine folks that own the IPC module would create a new XDC attribute to control this, something along the lines of:

var Ipc = xdc.useModule('ti.sdo.ipc.Ipc');
Ipc.swiPriority = 14;

placed into my .cfg file.

Regards, Eric

HELP!  I'm still very keen to get this issue resolved!

I have a new PC, new OS (Win10 Enterprise), and updated Processor SDK and CG tools...

 IPC 3.4.0.0

 BIOS 6.52.00.12

 XDCTOOLS  3.50.03.33 core

 ti-cgt-c6000_8.2.2

But I am still UNSUCCESSFUL at building the IPC under Windows.   It still "hangs" at the same output line "Starting build of library sources ..."

As suggested by Garrett, I did try Linux, but I could not even get through the Processor SDK installation without errors :-(

   ref:  support/dsp/c6000_multi-core_dsps/f/639/t/633182

So I'm back to Windows.  Has anyone else ever successfully rebuilt the IPC using Windows?

I've attached a .zip file containing the products.mak file, along with the console output from the build.

1205.Files.zip

Hello Sahin,

Thank you, you were VERY close!

> I suggest setting up your directories like mine
> On my end, I have my directories set up like this:
> C:\ti\xdctools_3_50_03_33_core
> C:\ti\ipc_3_47_00_00

My folder were the same. My working folder was C:\ti\ipc_3_47_00_00, and I was invoking gmake.exe which was in the C:\ti\xdctools_3_50_03_33_core folder. So then I copied gmake.exe over into the IPC folder and runr it from there, but that didn't improve anything.

BUT, then I realized that I still had MinGW functions in the path (I previously had been using MinGW\make for my builds). So I started a new shell, WITHOUT MinGW functions in the path, and NOW the gmake build of ipc-bios.mak completes without a hitch!

Thank you for pointing me at gmake, as it made me think of the MinGW utilities!

So tomorrow I will test whether this modified IPC will actually lower my SWI priority, and if so, will close this out as resolved.

Thank you again, Sahin!

Eric

Hi Eric,

Glad to hear it's been resolved!

Regards,
Sahin