Nagarjuna Kristam a62b3e3686 pci: edma: Update SW ring before final PCS ...

Updated PCS to final descriptor after SW ring callback is updated.
Read back PCS and add mb to ensure write and read AI's of descriptor
are ordered before rining doorbell.

Bug 3747376
Bug 3960792

Change-Id: Ief7e6e91edb19571777c6f589da3e6262b4d24b3
Signed-off-by: Nagarjuna Kristam <nkristam@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2778528
(cherry picked from commit df94316dc980657a66a2becbef94e21e52376a60)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2855011
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>

2023-02-10 23:45:32 -08:00

23 KiB

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