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mirror_ubuntu-kernels/drivers/net/ethernet/freescale/dpaa2
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Ioana Radulescu 16fa1cf1ed Revert "dpaa2-eth: configure the cache stashing amount on a queue" 
This reverts commit f8b9958534.

The reverted change instructed the QMan hardware block to fetch
RX frame annotation and beginning of frame data to cache before
the core would read them.

It turns out that in rare cases, it's possible that a QMan
stashing transaction is delayed long enough such that, by the time
it gets executed, the frame in question had already been dequeued
by the core and software processing began on it. If the core
manages to unmap the frame buffer _before_ the stashing transaction
is executed, an SMMU exception will be raised.

Unfortunately there is no easy way to work around this while keeping
the performance advantages brought by QMan stashing, so disable
it altogether.

Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-23 09:37:22 -07:00
..
dpaa2-eth-debugfs.c dpaa2-eth: add debugfs statistics 2019-01-19 10:28:43 -08:00
dpaa2-eth-debugfs.h dpaa2-eth: add debugfs statistics 2019-01-19 10:28:43 -08:00
dpaa2-eth-trace.h
dpaa2-eth.c Revert "dpaa2-eth: configure the cache stashing amount on a queue" 2019-05-23 09:37:22 -07:00
dpaa2-eth.h dpaa2-eth: Add flow steering support without masking 2019-04-16 21:46:19 -07:00
dpaa2-ethtool.c dpaa2-eth: Add flow steering support without masking 2019-04-16 21:46:19 -07:00
dpaa2-ptp.c dpaa2-ptp: defer probe when portal allocation failed 2018-11-09 20:08:58 -08:00
dpaa2-ptp.h net: dpaa2: move DPAA2 PTP driver out of staging/ 2018-10-08 10:23:22 -07:00
dpkg.h
dpni-cmd.h dpaa2-eth: Add ethtool support for flow classification 2018-10-02 22:24:08 -07:00
dpni.c dpaa2-eth: Add ethtool support for flow classification 2018-10-02 22:24:08 -07:00
dpni.h dpaa2-eth: Add ethtool support for flow classification 2018-10-02 22:24:08 -07:00
dprtc-cmd.h net: dpaa2: remove unused code for dprtc 2018-10-08 10:23:22 -07:00
dprtc.c net: dpaa2: remove unused code for dprtc 2018-10-08 10:23:22 -07:00
dprtc.h net: dpaa2: remove unused code for dprtc 2018-10-08 10:23:22 -07:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile dpaa2-eth: add debugfs statistics 2019-01-19 10:28:43 -08:00