Since commit 12c6b1bd8, the i.MX RT1050 has effectively had its data
cache disabled, as the SDRAM was marked Shareable; for the Cortex-M7,
shareable memory is not cached.
This was done to make the Ethernet driver work without any cache
maintenance code. This commit adds cache maintenance and memory barriers
to the Ethernet driver, and removes the Shareable attribute from the
SDRAM, so the data cache is used again.
Cache code in the base fsl_enet.c driver has not been activated - the
bulk of it is in higher-level Read and Write calls that we're not using,
and there is one flawed invalidate in its initialisation. Instead
imx_emac.cpp takes full cache responsibility.
This commit also marks the SDRAM as read/write-allocate. As the
Cortex-M7 has its "Dynamic read allocate mode" to automatically switch
back to read-allocate in cases where write allocate is working poorly
(eg large memset), this should result in a performance boost with no
downside.
Activating write-allocate is also an attempt to provoke any flaws in
cache maintenance - the Ethernet transmit buffers for example will be
more likely to have a little data in the cache that needs cleaning.
Kintis EMAC is consuming 16 rinbuffers for input, and 8 buffers for output.
This is over-use because input packets are immediately allocated from
heap when passed to LwIP. Therefore the number can be creatly reduced.
Ethernet controller. To ensure proper operation, some methods
needed to be updated in the SMSC9220's native driver as well.
It passes all related Greentea tests, however when supervised by
the Python environment it tends to fail because of Timeout.
The current timeout is set to 1200s that seems to be a little bit short
to finish all test cases, the timeout happens towards the end of the
last test case.
Change-Id: I914608c34828b493a80e133cd132537a297bfc84
Signed-off-by: Bence Kaposzta <bence.kaposzta@arm.com>
Static Thread methods and signal methods have been deprecated. Remove
all references in the main code, and most of the tests. Some tests of
the deprecated APIs themselves remain.
Typo in the config file made the LwIP stack way too small on EFM32GG11 STK3701 target. Additionally, the EMAC thread stack was slightly too small when debug printing is on.
Currently, if all TX descriptors are in use and IP stack calls K64F/K66F
ethernet driver link out, link out drops the packet. Added 10ms delay
to link out to wait for a descriptor to become available before dropping
the packet.
Changed K64F/K66F power up to return without waiting for link up i.e. for
the ethernet cable to be connected. This is needed for non-blocking use
of driver e.g. for using the driver from event queue.