diff options
| author | Jack Morgenstein <jackm@mellanox.co.il> | 2005-11-30 09:55:22 -0800 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2005-11-30 09:55:22 -0800 |
| commit | a3c8ab4fe8f006d742c24be677518bfa9862e732 (patch) | |
| tree | 641f58f25ced1cd0beea34ace95c8aa01aa82825 | |
| parent | f4e401562c11c7ca65592ebd749353cf0b19af7b (diff) | |
| download | linux-a3c8ab4fe8f006d742c24be677518bfa9862e732.tar.gz linux-a3c8ab4fe8f006d742c24be677518bfa9862e732.tar.bz2 linux-a3c8ab4fe8f006d742c24be677518bfa9862e732.zip | |
IB/mthca: fix QP size limits for mem-free HCAs
Unlike tavor, the max work queue size is an exact power of 2 for arbel
mode, despite what the documentation (of the QUERY_DEV_LIM firmware
command) says. Without this patch, on Arbel, we can start with a QP
of a valid size and get above the reported limit after rounding to the
next power of two.
Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il>
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
| -rw-r--r-- | drivers/infiniband/hw/mthca/mthca_cmd.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_cmd.c b/drivers/infiniband/hw/mthca/mthca_cmd.c index 9ed34587fc5c..22ac72bc20c3 100644 --- a/drivers/infiniband/hw/mthca/mthca_cmd.c +++ b/drivers/infiniband/hw/mthca/mthca_cmd.c @@ -937,10 +937,6 @@ int mthca_QUERY_DEV_LIM(struct mthca_dev *dev, if (err) goto out; - MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET); - dev_lim->max_srq_sz = (1 << field) - 1; - MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_SZ_OFFSET); - dev_lim->max_qp_sz = (1 << field) - 1; MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_QP_OFFSET); dev_lim->reserved_qps = 1 << (field & 0xf); MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_OFFSET); @@ -1056,6 +1052,10 @@ int mthca_QUERY_DEV_LIM(struct mthca_dev *dev, mthca_dbg(dev, "Flags: %08x\n", dev_lim->flags); if (mthca_is_memfree(dev)) { + MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET); + dev_lim->max_srq_sz = 1 << field; + MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_SZ_OFFSET); + dev_lim->max_qp_sz = 1 << field; MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSZ_SRQ_OFFSET); dev_lim->hca.arbel.resize_srq = field & 1; MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SG_RQ_OFFSET); @@ -1087,6 +1087,10 @@ int mthca_QUERY_DEV_LIM(struct mthca_dev *dev, mthca_dbg(dev, "Max ICM size %lld MB\n", (unsigned long long) dev_lim->hca.arbel.max_icm_sz >> 20); } else { + MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET); + dev_lim->max_srq_sz = (1 << field) - 1; + MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_SZ_OFFSET); + dev_lim->max_qp_sz = (1 << field) - 1; MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_AV_OFFSET); dev_lim->hca.tavor.max_avs = 1 << (field & 0x3f); dev_lim->mpt_entry_sz = MTHCA_MPT_ENTRY_SIZE; |