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| author |   Christopher Bednarz <christopher.n.bednarz@intel.com> | 2017-10-16 15:46:03 -0500 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2017-10-18 13:28:46 -0400 |
| commit | 56b2f52310f9fdfc1ea7b99702f827f84ad16801 (patch) | |
| tree | ad0caecc68a56fb550b2b6043bc4c367da1313eb | |
| parent | i40iw: Refactor queue depth calculation (diff) | |
| download | linux-dev-56b2f52310f9fdfc1ea7b99702f827f84ad16801.tar.xz linux-dev-56b2f52310f9fdfc1ea7b99702f827f84ad16801.zip | |
i40iw: Clear CQP Head/Tail during initialization
Clear Control Queue Pair (CQP) Head/Tail on CQP
initialization as during an adapter reset, these
values are not reinitialized. Tail is cleared by
writing 0 to CQP's tail register. Head is cleared
by writing 0 to CQP's doorbell register.
Fixes: 86dbcd0f12e9 ("i40iw: add file to handle cqp calls")
Signed-off-by: Christopher Bednarz <christopher.n.bednarz@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
| -rw-r--r-- | drivers/infiniband/hw/i40iw/i40iw_ctrl.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/i40iw/i40iw_ctrl.c b/drivers/infiniband/hw/i40iw/i40iw_ctrl.c index 3b6d12176413..e5c8f579e67b 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_ctrl.c +++ b/drivers/infiniband/hw/i40iw/i40iw_ctrl.c @@ -483,6 +483,9 @@ static enum i40iw_status_code i40iw_sc_cqp_init(struct i40iw_sc_cqp *cqp, cqp->dev->cqp_cmd_stats[OP_REQUESTED_COMMANDS] = 0; cqp->dev->cqp_cmd_stats[OP_COMPLETED_COMMANDS] = 0; + i40iw_wr32(cqp->dev->hw, I40E_PFPE_CQPTAIL, 0); + i40iw_wr32(cqp->dev->hw, I40E_PFPE_CQPDB, 0); + i40iw_debug(cqp->dev, I40IW_DEBUG_WQE, "%s: sq_size[%04d] hw_sq_size[%04d] sq_base[%p] sq_pa[%llxh] cqp[%p] polarity[x%04X]\n", __func__, cqp->sq_size, cqp->hw_sq_size, |