diff options
| author | Or Gerlitz <ogerlitz@voltaire.com> | 2006-06-17 20:37:37 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2006-06-17 20:37:37 -0700 |
| commit | d4cb0784fd1ea99ef3d20526811bd5608146fe60 (patch) | |
| tree | 214f2e6923c9a04c27b09d790968736cc90c0cdd /drivers/infiniband/hw/mthca/mthca_provider.c | |
| parent | 6eddb5cb906ac5c9a17a1b76464eadacd88b6c92 (diff) | |
IB/mthca: Fill in max_map_per_fmr device attribute
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>
Diffstat (limited to 'drivers/infiniband/hw/mthca/mthca_provider.c')
| -rw-r--r-- | drivers/infiniband/hw/mthca/mthca_provider.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c index a2eae8a30167..8f89ba7c9147 100644 --- a/drivers/infiniband/hw/mthca/mthca_provider.c +++ b/drivers/infiniband/hw/mthca/mthca_provider.c @@ -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: |