diff options
author | Hariprasad S <hariprasad@chelsio.com> | 2015-04-22 01:45:00 +0530 |
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committer | Doug Ledford <dledford@redhat.com> | 2015-05-05 09:18:01 -0400 |
commit | 09ece8b9e983fe858de6eab7a386d58d194227b6 (patch) | |
tree | c9d7485ed84ccb2b900ce983b3ab6c52a7551ce1 /drivers/infiniband/hw/cxgb4/t4.h | |
parent | iw_cxgb4: 32b platform fixes (diff) | |
download | linux-dev-09ece8b9e983fe858de6eab7a386d58d194227b6.tar.xz linux-dev-09ece8b9e983fe858de6eab7a386d58d194227b6.zip |
iw_cxgb4: use BAR2 GTS register for T5 kernel mode CQs
For T5, we must not use the kdb/kgts registers, in order avoid db drops
under extreme loads.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/cxgb4/t4.h')
-rw-r--r-- | drivers/infiniband/hw/cxgb4/t4.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/cxgb4/t4.h b/drivers/infiniband/hw/cxgb4/t4.h index 871cdcac7be2..7f2a6c244d25 100644 --- a/drivers/infiniband/hw/cxgb4/t4.h +++ b/drivers/infiniband/hw/cxgb4/t4.h @@ -539,6 +539,7 @@ struct t4_cq { size_t memsize; __be64 bits_type_ts; u32 cqid; + u32 qid_mask; int vector; u16 size; /* including status page */ u16 cidx; @@ -563,12 +564,12 @@ static inline int t4_arm_cq(struct t4_cq *cq, int se) set_bit(CQ_ARMED, &cq->flags); while (cq->cidx_inc > CIDXINC_M) { val = SEINTARM_V(0) | CIDXINC_V(CIDXINC_M) | TIMERREG_V(7) | - INGRESSQID_V(cq->cqid); + INGRESSQID_V(cq->cqid & cq->qid_mask); writel(val, cq->gts); cq->cidx_inc -= CIDXINC_M; } val = SEINTARM_V(se) | CIDXINC_V(cq->cidx_inc) | TIMERREG_V(6) | - INGRESSQID_V(cq->cqid); + INGRESSQID_V(cq->cqid & cq->qid_mask); writel(val, cq->gts); cq->cidx_inc = 0; return 0; @@ -601,7 +602,7 @@ static inline void t4_hwcq_consume(struct t4_cq *cq) u32 val; val = SEINTARM_V(0) | CIDXINC_V(cq->cidx_inc) | TIMERREG_V(7) | - INGRESSQID_V(cq->cqid); + INGRESSQID_V(cq->cqid & cq->qid_mask); writel(val, cq->gts); cq->cidx_inc = 0; } |