Which is shared region in default dsplink?

Kalaiyarasan ES

Hi,

I am using "dvsdk_omapl138-evm_4_02_00_06" in ubuntu 10.04. When I see TCF file of dsplink sample applications. There are 2 region DSPLINKMEM and POOLMEM. What is Sections stands for and which is shared region?

Where POOL_Config allocated memory? For example consider MSGQ example, Where DSP QUEUE and GPP QUEUE is create (DSPLINKMEM or POOL MEM) ?

If My message contains only MSGQ_Header than what is size of my message?

How many number of msg can i able to allocate in a Queue?

What will be size of a Queue structure in shared region (if Queue has only one message holding capacity )?
Will Size of Queue changes for GPP and DSP side Queue?

I had gone through LNK_082_des and LNK_031_des but i'ma not able to figure out this.

Please Help me...

over 13 years ago

0 Arnie Reynoso over 13 years ago

TI__Expert 6860 points

DSPLINKMEM and POOLMEM are both shared memory regions. The POOLMEM is only used for allocation of POOL buffers (POOL_alloc() ) and when allocating a MSGQ buffer ( MSGQ_alloc() ). The remaining shared memory needs from DSPLink comes from DSPLINKMEM.

Here are a couple of links that contain some of this information.

http://processors.wiki.ti.com/index.php/Determining_DSPLink_shared_memory_size_requirements

http://processors.wiki.ti.com/index.php/DSPLink_POOL_FAQs

Regarding some of your MSGQ questions, take a look at:

http://processors.wiki.ti.com/index.php/DSPLink_FAQs#MSGQ_questions

You can also refer to the DSP/BIOS User's Guide and API, which details the MSGQ module - http://processors.wiki.ti.com/index.php/DSPBIOS

Also from - http://processors.wiki.ti.com/index.php/DSPLink_Overview follow the link in the Training section.

Lots of information here, so I hope these links answer your questions.

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Which is shared region in default dsplink?