OTX2 AP core can sometimes fissure STP instructions when it is more
optimal to send such writes into the pipeline as 2 separate
instructions. However registers should be excluded from such
optimization. This commit ensures that no CSR write is ever fissured
by introducing zero cost workaround by setting STP pre-index by zero to
make sure OTX2 AP core prevent fissure.
Fixes: 8a4f835971f5 ("common/octeontx2: add IO handling APIs")
Signed-off-by: Jerin Jacob <jerinj@marvell.com>
Acked-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
Various octeontx2 drivers use IO handling API, added octeontx2
specific IO handling routines in the common code.
Since some of those implementations are based on arm64 instructions
added the stub to compile the code on non arm64 ISA.
The non arm64 ISA stub is possible due to the fact that
it is an integrated controller i.e runs only on Marvell HW.
Signed-off-by: Jerin Jacob <jerinj@marvell.com>
Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
