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IB/mthca: Fill in max_map_per_fmr device attribute

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Report the true max_map_per_fmr value from mthca_query_device(),
taking into account the change in FMR remapping introduced by the
Sinai performance optimization.

Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Or Gerlitz 2006-06-17 20:37:37 -07:00 committed by Roland Dreier
parent 6eddb5cb90
commit d4cb0784fd
1 changed files with 10 additions and 0 deletions
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10
drivers/infiniband/hw/mthca/mthca_provider.c
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@ -115,6 +115,16 @@ static int mthca_query_device(struct ib_device *ibdev,
props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
props->max_mcast_grp;
/*
* If Sinai memory key optimization is being used, then only
* the 8-bit key portion will change. For other HCAs, the
* unused index bits will also be used for FMR remapping.
*/
if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
props->max_map_per_fmr = 255;
else
props->max_map_per_fmr =
(1 << (32 - long_log2(mdev->limits.num_mpts))) - 1;
err = 0;
out: