TMDSEVM6678: EDMA3 LLD request second QDMA channel failed with -133

cz h

Intellectual 750 points

Part Number: TMDSEVM6678
Other Parts Discussed in Thread: TMS320C6678

Hello, I'm testing EDMA3 LLD ,my environment is as follow:

CCS: V5.5

Complier: V7.4.4

EDMA3 LLD : 2_12_01_24

I import the sample project in the edma3 lld package, and I build success, then I want to
test how to request two QDMA channels , then I just adds some code bellow the original code:

qChId1 = EDMA3_DRV _QDMA_CHANNEL_ANY;

qTcc1 = EDMA3_DRV_TCC_ANY;

if(result == EDMA3_DRV_SOK){
result = EDMA3_DRV_requestChannel(hEdma,&qChId,&qTcc1,(EDMA3_RM_EventQueue)
0,&callback1,NULL);

}
the code added is
qChId2 = EDMA3_DRV _QDMA_CHANNEL_ANY;

qTcc2 = EDMA3_DRV_TCC_ANY;

if(result == EDMA3_DRV_SOK){
result = EDMA3_DRV_requestChannel(hEdma,&qChId,&qTcc1,(EDMA3_RM_EventQueue)
0,&callback1,NULL);

}
then I rebuild the project, and it success, but after I run the second EDMA3_DRV_requestChannel function ,the result it returned is "-133",and I found the error code means "The requested QDMA Channel not available", does my method that request two or more QDMA channels right, if it is not right, how can I request two more channels, waitting for your help, thank you!

over 9 years ago

0 cz h over 9 years ago

Intellectual 750 points

Hello, I have found the answer in the following web,
e2e.ti.com/.../7022, and I will try this method ,thank you

0 cz h over 9 years ago in reply to cz h

Intellectual 750 points

I didn't try the answer above, and I found the files for this version edma3 lld is under "D:\ti\edma3_lld_2_12_01_24\packages\ti\sdo\edma3\drv\sample\src\platforms" in sample_c6678_cfg.c,the related code is as follow:

EDMA3_RM_InstanceInitConfig sampleInstInitConfig[NUM_EDMA3_INSTANCES][EDMA3_MAX_REGIONS] =
{
  /* EDMA3 INSTANCE# 0 */
  {
   /* Resources owned/reserved by region 0 */
   {
    /* ownPaRAMSets */
    /* 31     0     63    32     95    64     127   96 */
    {0x3FFF0003u, 0x00000000u, 0x00000000u, 0x00000000u,
    /* 159 128     191 160     223 192     255 224 */
     0x00000000u, 0x00000000u, 0x00000000u, 0x00000000u,
    /* 287 256     319 288     351 320     383 352 */
     0x00000000u, 0x00000000u, 0x00000000u, 0x00000000u,
    /* 415 384     447 416     479 448     511 480 */
     0x00000000u, 0x00000000u, 0x00000000u, 0x00000000u},

    /* ownDmaChannels */
    /* 31     0     63    32 */
    {0x00000003u, 0x00000000u},

    /* ownQdmaChannels */
    /* 31     0 */
    {0x00000001u},

    /* ownTccs */
    /* 31     0     63    32 */
    {0x00000003u, 0x00000000u},

    /* resvdPaRAMSets */
    /* 31     0     63    32     95    64     127   96 */
    {0x00000000u, 0x00000000u, 0x00000000u, 0x00000000u,
    /* 159 128     191 160     223 192     255 224 */
     0x00000000u, 0x00000000u, 0x00000000u, 0x00000000u,
    /* 287 256     319 288     351 320     383 352 */
     0x00000000u, 0x00000000u, 0x00000000u, 0x00000000u,
    /* 415 384     447 416     479 448     511 480 */
     0x00000000u, 0x00000000u, 0x00000000u, 0x00000000u,},

    /* resvdDmaChannels */
    /* 31     0     63    32 */
    {0x00000000u, 0x00000000u},

    /* resvdQdmaChannels */
    /* 31     0 */
    {0x00000000u},

    /* resvdTccs */
    /* 31     0     63    32 */
    {0x00000000u, 0x00000000u},
   },

....

if I try the solution above , I should rebuild the edma3 lld package, and I don't know how to rebuild it .

I have another question, why the sample code didn't support multiple QDMA channels, as the above code highlight with red color?

how can I edit the code to enable edma3 instance 0,1,2 to support multiple QDMA channels , and how to rebuild the edma3 lld library?

0 Yordan Kovachev over 9 years ago in reply to cz h

TI__Guru**** 161600 points

Hi,

I've notified the design team. Feedback will be posted here.

Best Regards,
Yordan

0 ran35366 over 9 years ago in reply to Yordan Kovachev

TI__Genius 12805 points

I assume this question was already answered by the e2e posting

TMS320C6678: Why did the edma3 lld own only one QDMA channels ( https://e2e.ti.com/support/dsp/c6000_multi-core_dsps/f/639/p/562832/2061557)

I close this thread

Ran

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TMDSEVM6678: EDMA3 LLD request second QDMA channel failed with -133