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/linux/drivers/infiniband/hw/erdma/
H A Derdma_qp.cdiff 0edf42cbcc8690ef349d4432fea74d7791e3c645 Wed Nov 16 03:31:07 CET 2022 Cheng Xu <chengyou@linux.alibaba.com> RDMA/erdma: Notify the latest PI to FW for reflushing when necessary

Firmware is responsible for flushing WRs in HW, and it's a little
difficult for firmware to get the latest PI of QPs, especially for RQs
after QP state being changed to ERROR. So we introduce a new CMDQ command,
by which driver can notify to latest PI to FW, and then FW can flush all
posted WRs.

Link: https://lore.kernel.org/r/20221116023107.82835-4-chengyou@linux.alibaba.com
Signed-off-by: Cheng Xu <chengyou@linux.alibaba.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
H A Derdma_verbs.hdiff 0edf42cbcc8690ef349d4432fea74d7791e3c645 Wed Nov 16 03:31:07 CET 2022 Cheng Xu <chengyou@linux.alibaba.com> RDMA/erdma: Notify the latest PI to FW for reflushing when necessary

Firmware is responsible for flushing WRs in HW, and it's a little
difficult for firmware to get the latest PI of QPs, especially for RQs
after QP state being changed to ERROR. So we introduce a new CMDQ command,
by which driver can notify to latest PI to FW, and then FW can flush all
posted WRs.

Link: https://lore.kernel.org/r/20221116023107.82835-4-chengyou@linux.alibaba.com
Signed-off-by: Cheng Xu <chengyou@linux.alibaba.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>