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Make sure we are not using DB's which were remapped for link status.
Fixes: f6e51c354b60 ("ntb: intel: split out the gen3 code")
Signed-off-by: Nikita Shubin <n.shubin@yadro.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
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Adding 4th generation Intel NTB support bits. There are a lot of common
parts that the gen4 NTB has with gen3 NTB on Skylake. The commonalities are
reused in gen4 Icelake NTB.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
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Fix sparse warning:
drivers/ntb/hw/intel/ntb_hw_gen3.c:535:5: warning:
symbol 'intel_ntb3_peer_db_addr' was not declared. Should it be static?
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
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NTB door bell usage depends on NTB hardware.
ex: intel NTB gen1 has one peer door bell register which can be controlled
by the bitmap writen to it, while Intel NTB gen3 has a registers
per door bell and the data trigering the each door bell is always 1.
therefore exposing only peer door bell address forcing the user
to be aware of such low level details
Signed-off-by: Leonid Ravich <Leonid.Ravich@emc.com>
Acked-by: Logan Gunthorpe <logang@deltatee.com>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Allen Hubbe <allenbh@gmail.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
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Change all references to skx to gen3 NTB.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
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Move the Intel hw gen3 code to its own source file. The ntb_hw_intel.c was
getting too large and makes it hard to maintain with future hardware
changes.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
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