Part Number: TDA2SX
Hello,
We use OSA_memAllocSR function to allocate shared memory, In the other process we use physical address:get from function OSA_memVirt2Phys,but it will report "Segmentation fault".
1. One process in A15 allocate SR1 memory, code below:
for (id = 0; id < pOutObj->numFrames; id++)
{
UInt32 imgSize = pObj->outChnInfo.pitch[0]*pObj->outChnInfo.height;
System_Buffer *pSysBuf = &pOutObj->buffers[id];
System_VideoFrameBuffer *pSysVidBuf = &pOutObj->videoFrames[id];
pSysVidBuf->bufAddr[0] = OSA_memAllocSR(
OSA_HEAPID_DDR_CACHED_SR1,
imgSize,SYSTEM_BUFFER_ALIGNMENT);
OSA_assert(pSysVidBuf->bufAddr[0] != NULL);
System_exportDmaBuf(pSysVidBuf->bufAddr[0],
imgSize,
&pSysVidBuf->dmaFd[0]);
pSysBuf->payload = pSysVidBuf;
pSysBuf->payloadSize = sizeof(System_VideoFrameBuffer);
pSysBuf->chNum = 0;
pSysBuf->bufType = SYSTEM_BUFFER_TYPE_VIDEO_FRAME;
pSysBuf->srcTimestamp = OSA_getCurGlobalTimeInUsec();
pSysBuf->frameId = 0;
pSysBuf->linkLocalTimestamp = pSysBuf->srcTimestamp;
for (planes = 1; planes < SYSTEM_MAX_PLANES; planes++)
{
pSysVidBuf->bufAddr[planes] = pSysVidBuf->bufAddr[0];
}
pOutObj->pBufVirAddr[id] = (unsigned char*)pSysVidBuf->bufAddr[0];
pOutObj->pBufPhyAddr[id] = (unsigned char*)OSA_memVirt2Phys((unsigned int)pSysVidBuf->bufAddr[0], OSA_MEM_REGION_TYPE_SR1);
}
2. another process in A15,use physical address, code below:
memcpy(multiRenderBufInfo.bufInfo[putBufIdx].pVirtualAddr, sCarData.pPicData, DISPLAYW*DISPLAYH*4);
when call this function it will report "Segmentation fault", if it can't support physical address between two process, how can I share memory between two process?
