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0b9c0c6540
We found there are loops of *2* Maps and only *1* Unmap and
the DMA buffer address is decreasing.
It is caused by the below code flow.
XhcAsyncInterruptTransfer ->
XhcCreateUrb ->
XhcCreateTransferTrb ->
Map Urb->DataMap (1)
Timer: loops of *2* Maps and only *1* Unmap
XhcMonitorAsyncRequests ->
XhcFlushAsyncIntMap ->
Unmap and Map Urb->DataMap (2)
XhcUpdateAsyncRequest ->
XhcCreateTransferTrb ->
Map Urb->DataMap (3)
This patch is to eliminate (3).
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
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| .. | ||
| EhciDxe | ||
| EhciPei | ||
| IdeBusPei | ||
| IncompatiblePciDeviceSupportDxe | ||
| NonDiscoverablePciDeviceDxe | ||
| NvmExpressDxe | ||
| PciBusDxe | ||
| PciHostBridgeDxe | ||
| PciSioSerialDxe | ||
| SataControllerDxe | ||
| SdMmcPciHcDxe | ||
| SdMmcPciHcPei | ||
| UfsPciHcDxe | ||
| UfsPciHcPei | ||
| UhciDxe | ||
| UhciPei | ||
| XhciDxe | ||
| XhciPei | ||