DM816x Problem Attaching to [DSP] and others..

Hello:

Here are some more details about the problem. 

We are using cgt6x_7_3_1

The standard build used rts6740_elf.lib and it worked okay.

We now replaced this library with rts6740_elf_eh.lib for our C++ DSP algorithm.  This was needed because we are using exceptions.

When we use the exceptions library we are getting stuck in system_ipc_msgq.c  function System_ipcMsgQHeapCreate() at the call to HeapMemMP_open()

Are there more things we need to do to pull in this library.  Otherwise, why are we getting stuck here?

       /* open heap */
        retryCount = 10;
        while (retryCount)
        {
            Vps_printf(" %d: SYSTEM: Opening MsgQ Heap [%s] ...\n",
                       Utils_getCurTimeInMsec(), SYSTEM_IPC_MSGQ_HEAP_NAME);

            status =
                HeapMemMP_open(SYSTEM_IPC_MSGQ_HEAP_NAME,
                               &gSystem_ipcObj.msgQHeapHndl);
            if (status == HeapMemMP_E_NOTFOUND)
            {
                /* Sleep for a while before trying again. */
                Task_sleep(1000);
            }
            else if (status == HeapMemMP_S_SUCCESS)
            {
                break;
            }
            retryCount--;
            if (retryCount <= 0)
                UTILS_assert(0);
        }

 First of all, please post all DVR RDK releated query on DM816x forum.

To understand the inner workings of McFW, please go through DVR_RDK_McFW_UserGuide.pdf inside dvr_rdk/docs folder.

Is there a shared memory between the Linux and DSP processors so that we can we just pass a pointer from Linux Memory space to the DSP.  If so, what shared memory space is appropriate (SR3?), is there a heap, how do we malloc in that space, and free it?  Or, do we create a large message and pass via which API?

SR0 is syslink shared region. A8 can allocate memory from this pool using Vsys_allocBuf() API. Look for defination of this module inside dvr_rdk\mcfw\src_linux\mcfw_api\ti_vsys.c file. This memory pointer can be passed from A8 to DSP using System_linkControl() API. If you are creating new link on DSP side, this buffer pointer can be part of create or dynamic param structure of the algorithm inside *.h file that should be placed inside dvr_rdk\mcfw\interfaces\link_api. If you are just enhancing current algLink on DSP, then enhance the structure inside dvr_rdk\mcfw\interfaces\link_api\algLink.h

If you need to increase the DSP code/data memory, you can modify file dvr_rdk\mcfw\src_bios6\cfg\ti816x\*.bld and remap the memory follwoing the guidelines in chapter 5.2 of DVR_RDK_McFW_UserGuide.pdf.

Regards,

Manisha

Yes, you can assign a section to a desired memory segment in BIOS_c6xdsp.cfg. You can also change DSP heap memory size inside FC_RMAN_IRES_c6xdsp.cfg

Hi, Bandeg, 

May I ask how did you find the overlap? By check the memory map of dsp, then then compare that with the overall map (including M3)? 

Any input is appreciated. 

Best,

Yuanwei