IPC attach error if ownerprocid is not zero in C6678

Hari Krishna1

Other Parts Discussed in Thread: SYSBIOS

Hi ,

I am having evmC6678 ,I am trying to IPC among the 8 cores ,I have 8 projects and each project has it own .out file and i am loading it onto respective cores (8 cores) among those i did IPC it is working fine,when the ownerprocid is 0 ,please find the .cfg i used

var Notify = xdc.useModule('ti.sdo.ipc.Notify');
var SharedRegion = xdc.useModule('ti.sdo.ipc.SharedRegion');

var Cache = xdc.useModule('ti.sysbios.hal.Cache');
var BIOS = xdc.useModule('ti.sysbios.BIOS');
var Settings = xdc.useModule('ti.csl.Settings');
var Task = xdc.useModule('ti.sysbios.knl.Task');
var Ipc = xdc.useModule('ti.sdo.ipc.Ipc');
var MultiProc = xdc.useModule('ti.sdo.utils.MultiProc');

Program.linkTemplate = "ti/targets/elf/linkcmdC6678.xdt";

var nameList = MultiProc.getDeviceProcNames();
var HeapBufMP   = xdc.useModule('ti.sdo.ipc.heaps.HeapBufMP');

var System   = xdc.useModule('xdc.runtime.System');
var SysStd   = xdc.useModule('xdc.runtime.SysStd');
Ipc.procSync = Ipc.ProcSync_PAIR;
MultiProc.setConfig(null,[ "CORE0","CORE1","CORE2","CORE3","CORE4","CORE5","CORE6","CORE7"]);
BIOS.heapSize   = 0x8000;

System.SupportProxy = SysStd;

SharedRegion.numEntries = 2;
SharedRegion.translate = false;

SharedRegion.setEntryMeta(0,
    { base: 0x0C000000,
      len:   0x00200000,
      ownerProcId: 0,
      isValid: true,
      name: "internal_shared_mem",
    }
);

SharedRegion.setEntryMeta(1,
    { base: 0x0C200000,
      len:   0x00200000,
      isValid: true,
      name: "internal_shared_mem_data",
    }
);

my idea is to make ownerprocID as 4

if i change the ownerprocID to 4 i am getting error when i try to attach cores , firstly core0 to core4 getting attached and i got error( ti.sdo.heapmem error ).

my question is it mandatory to have ownerprocid is 0 because sharedregion entry should be done with index 0 so that ipc_start is done ,in the same way to do ipc_attach() ownerprocid should be 0?

for the same above cfg i madefollowing change:

MultiProc.setConfig(null,[ "CORE4","CORE5","CORE6","CORE7","CORE0","CORE1","CORE2","CORE3"]);

and i given ownerprocid 0 only ipc_attach works fine.

Please clarify ,Thanks in advance .

Regards,

Harikrishna

over 12 years ago

0 judahvang over 12 years ago

TI__Mastermind 32475 points

If you are synching all processors with "Ipc.procSync = Ipc.ProcSync_ALL;", I do see an issue here because all cores must attach to the owner before attaching to each other. In this case, Ipc_start calls Ipc_attach() in a "For loop" so its a problem.

If you are synching by pair, I do not see a restriction that the owner id has to be 0. You must still attach to the owner before attaching to other cores.

Could you post the actual error because I don't see why you shouldn't be able to do this? Also, post your BIOS and IPC versions that you are using.

Judah

0 Hari Krishna1 over 12 years ago in reply to judahvang

Intellectual 350 points

Hi Judah,

i got error : ti.sdo.ipc.heaps.HeapMemMP: line 403: E_internal: An internal error occurred

BIOS version : bios_6_34_02_18

IPC version : ipc_1_25_00_04

Regards,

Harikrishna

0 Hari Krishna1 over 12 years ago in reply to Hari Krishna1

Intellectual 350 points

someone please reply .

Regards,

Harikrishna

0 GAnthony over 12 years ago in reply to Hari Krishna1

TI__Intellectual 2790 points

Hello Harikrishna:

That error:

> ti.sdo.ipc.heaps.HeapMemMP: line 403: E_internal: An internal error occurred

is coming from a failed call to GateMP_openByAddr() in HeapMemMP.c:ti_sdo_ipc_heaps_HeapMemMP_Instance_init():

        status = GateMP_openByAddr(localAddr, (GateMP_Handle *)&(obj->gate));
        if (status != GateMP_S_SUCCESS) {
            Error_raise(eb, ti_sdo_ipc_Ipc_E_internal, 0, 0);
            return(1);

as a result of a HeapMemMP_create() call.

HeapMemMP_create() is being called from SharedRegion.c:ti_sdo_ipc_SharedRegion_start(), which is called from Ipc_start().

HeapMemMP_create() can also be called from SharedRegion_setEntry(), which I don't see being called directly from Ipc module.

So, to confirm, is the error coming from Ipc_attach() or Ipc_start() call? Can you please share the C code that calls Ipc_start() and Ipc_attach()? And confirm if using Ipc.ProcSync_ALL or Ipc.ProcSync_PAIR?

Many Thanks,

- Gil

0 Hari Krishna1 over 12 years ago in reply to GAnthony

Intellectual 350 points

Hi Gil,

i am using ipc.ProcSync_PAIR only , the cfg what is am using is there in my first post .

i have modified .cfg also find the attachment 1055.C6678_Master_0.cfg where i able to run successfully ,but the below changes in .cfg causes error

in cfg i have config as this MultiProc.setConfig(null,[ "CORE0","CORE1","CORE2","CORE3","CORE4","CORE5","CORE6","CORE7"]); and ownerprocID is 4 then i got error , if MultiProc.setConfig(null,[ "CORE4","CORE5","CORE6","CORE7","CORE0","CORE1","CORE2","CORE3"]); is used ownerprocID as 0 it worked . what is the exact reason for ownerprocID should always be 0 ?

i cannot provide the entire C code , as i can't share it , i can provide the attach function , it is running on core0

#define MSMCRAM_MSG_SHR_ID            0
#define MSMCRAM_MSG_HSK_SHR_ID        1
#define DDR3_C0_DATA_SHR_ID            2
#define DDR3_C1_DATA_SHR_ID            3
#define DDR3_C2_DATA_SHR_ID            4
#define DDR3_C3_DATA_SHR_ID            5
#define DDR3_C4_DATA_SHR_ID            6
#define DDR3_C5_DATA_SHR_ID            7
#define DDR3_C6_DATA_SHR_ID            8
#define DDR3_C7_DATA_SHR_ID            9

Int
attach (
    Int num
) {

    int status;

    SharedRegion_Entry share;
    SharedRegion_Entry share1;
    SharedRegion_Entry share2;

    if ( SharedRegion_getEntry(MSMCRAM_MSG_SHR_ID, &share) == SharedRegion_E_FAIL ) {
        printf("\nSharedRegion_getEntry failed");

        return -1;
    }

    if ( share.isValid == FALSE ) {
        printf("\nNo Valid Shared memory");

        return -1;
    }

    if ( SharedRegion_getEntry(MSMCRAM_MSG_HSK_SHR_ID, &share1) == SharedRegion_E_FAIL ) {
        printf("\nSharedRegion_getEntry failed");

        return -1;
    }

    if ( share1.isValid == FALSE ) {
        printf("\nNo Valid Shared memory");

        return -1;
    }

    if ( SharedRegion_getEntry(DDR3_C4_DATA_SHR_ID, &share2) == SharedRegion_E_FAIL ) {
       printf("\nSharedRegion_getEntry failed");

        return -1;
    }

    if ( share2.isValid == FALSE ) {
        printf("\nNo Valid Shared memory");

        return -1;
    }

    if ( (status = Ipc_start()) < 0 ) {
        printf("\nIpc start failed");

        return -1;
    }

    do {
        status = Ipc_attach(4);
    } while ( status < 0 );

    return 0;
}
and on core4

attach only i will give the error .

The error is coming beause on ipc_attach only , ipc_start is happening successfully. But what is the reason

Regards,

Hari.

0 Krishna Prasad2 over 12 years ago

Prodigy 40 points

Hi Hari,

Its not mandatory that Owner Id should be 0 always. If you want to set any other Id as owner other than 0, you can dynamically configure it by using

SharedRegion_setEntry(0, &entry) in your c file.

Example:

entry.ownerProcId = 0;
entry.base = (unsigned int *)0x8E000000;
entry.len = 0x00100000;
entry.isValid = 1;
entry.name = "shared_mem";
entry.cacheEnable = 1;
entry.cacheLineSize = 128;
entry.createHeap = 0;
SharedRegion_setEntry(0, &entry);

Regards,

Krishna

0 Hari Krishna1 over 12 years ago in reply to Krishna Prasad2

Intellectual 350 points

Hi Krishna,

Thanks for your reply.

Regards,

Harikrishna.K

0 Hari Krishna1 over 12 years ago in reply to Hari Krishna1

Intellectual 350 points

Hi Krishna,

In my project i modified accordingly , it did not work for me when i change the ownerprocID to other than 0 .IPC_attcah failed.

Regards,

Harikrishna

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IPC attach error if ownerprocid is not zero in C6678