Multi Channel DMA Intel® FPGA IP for PCI Express User Guide

ID 683821
Date 4/20/2022
Public

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8.1.6.9. ifc_qdma_channel_put

Table 96.  ifc_qdma_channel_put
API API Description Input Parameters Return Values
void ifc_qdma_channel_put(struct ifc_qdma_channel *qchnl)

Once the DMA transactions are completed, application must call this API to release the acquired channel so that, other process or other thread will acquire again.

libmqdma disables this channel so that hardware does not look for DMA transactions.

qchan: channel context

0 on success

negative otherwises

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