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dp: tx: Always ensure that any pending AUX transactions have completed.

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Prior to initiating a new AUX transaction, always ensure that any pending
transactions have completed.

Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
This commit is contained in:
Andrei-Liviu Simion 2015-02-09 15:34:15 -07:00 • committed by Nava kishore Manne
parent 2cb307c7d5
commit 78cccda094
1 changed files with 14 additions and 0 deletions
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14
XilinxProcessorIPLib/drivers/dp/src/xdp.c
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@ -2967,6 +2967,20 @@ static u32 XDp_TxAuxRequestSend(XDp *InstancePtr, XDp_AuxTransaction *Request)
u32 Status;
u8 Index;
/* Ensure that any pending AUX transactions have completed. */
TimeoutCount = 0;
do {
Status = XDp_ReadReg(InstancePtr->Config.BaseAddr,
XDP_TX_REPLY_STATUS);
XDp_WaitUs(InstancePtr, 20);
TimeoutCount++;
if (TimeoutCount >= XDP_AUX_MAX_TIMEOUT_COUNT) {
return XST_ERROR_COUNT_MAX;
}
} while ((Status & XDP_TX_REPLY_STATUS_REQUEST_IN_PROGRESS_MASK) &&
(Status & XDP_TX_REPLY_STATUS_REPLY_IN_PROGRESS_MASK));
/* Set the address for the request. */
XDp_WriteReg(InstancePtr->Config.BaseAddr, XDP_TX_AUX_ADDRESS,
Request->Address);