[PATCH V4 rdma-core 2/5] bnxt_re/lib: Read wqe mode from the driver

[Devesh Sharma <devesh.sharma@broadcom.com>]

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During bnxt_re device context creation, read the
wqe mode and store it in context structure and
in the QP context structure. wqe mode would be
required to change between fixed size wqe and
non-fixed sized wqe modes of SQ/RQ in gen-p5
or newer devices.

Signed-off-by: Devesh Sharma <devesh.sharma@broadcom.com>
---
 providers/bnxt_re/bnxt_re-abi.h | 5 +++++
 providers/bnxt_re/main.c        | 4 ++++
 providers/bnxt_re/main.h        | 2 ++
 providers/bnxt_re/verbs.c       | 1 +
 4 files changed, 12 insertions(+)

diff --git a/providers/bnxt_re/bnxt_re-abi.h b/providers/bnxt_re/bnxt_re-abi.h
index c82019e8..d138cd9c 100644
--- a/providers/bnxt_re/bnxt_re-abi.h
+++ b/providers/bnxt_re/bnxt_re-abi.h
@@ -196,6 +196,11 @@ enum bnxt_re_ud_cqe_mask {
 	BNXT_RE_UD_CQE_SRCQPLO_SHIFT	= 0x30
 };
 
+enum bnxt_re_modes {
+	BNXT_RE_WQE_MODE_STATIC =	0x00,
+	BNXT_RE_WQE_MODE_VARIABLE =	0x01
+};
+
 struct bnxt_re_db_hdr {
 	__le32 indx;
 	__le32 typ_qid; /* typ: 4, qid:20*/
diff --git a/providers/bnxt_re/main.c b/providers/bnxt_re/main.c
index 1779e1ec..ee9edd7d 100644
--- a/providers/bnxt_re/main.c
+++ b/providers/bnxt_re/main.c
@@ -158,6 +158,10 @@ static struct verbs_context *bnxt_re_alloc_context(struct ibv_device *vdev,
 					 BNXT_RE_CHIP_ID0_CHIP_MET_SFT) &
 					 0xFF;
 	}
+
+	if (resp.comp_mask & BNXT_RE_UCNTX_CMASK_HAVE_MODE)
+		cntx->wqe_mode = resp.mode;
+
 	pthread_spin_init(&cntx->fqlock, PTHREAD_PROCESS_PRIVATE);
 	/* mmap shared page. */
 	cntx->shpg = mmap(NULL, rdev->pg_size, PROT_READ | PROT_WRITE,
diff --git a/providers/bnxt_re/main.h b/providers/bnxt_re/main.h
index a63719e8..dc8166f2 100644
--- a/providers/bnxt_re/main.h
+++ b/providers/bnxt_re/main.h
@@ -146,6 +146,7 @@ struct bnxt_re_qp {
 	uint64_t wqe_cnt;
 	uint16_t mtu;
 	uint16_t qpst;
+	uint32_t qpmode;
 	uint8_t qptyp;
 	/* irdord? */
 };
@@ -178,6 +179,7 @@ struct bnxt_re_context {
 	uint32_t max_srq;
 	struct bnxt_re_dpi udpi;
 	void *shpg;
+	uint32_t wqe_mode;
 	pthread_mutex_t shlock;
 	pthread_spinlock_t fqlock;
 };
diff --git a/providers/bnxt_re/verbs.c b/providers/bnxt_re/verbs.c
index fb2cf5ac..11c01574 100644
--- a/providers/bnxt_re/verbs.c
+++ b/providers/bnxt_re/verbs.c
@@ -952,6 +952,7 @@ struct ibv_qp *bnxt_re_create_qp(struct ibv_pd *ibvpd,
 		goto fail;
 	/* alloc queues */
 	qp->cctx = &cntx->cctx;
+	qp->qpmode = cntx->wqe_mode & BNXT_RE_WQE_MODE_VARIABLE;
 	if (bnxt_re_alloc_queues(qp, attr, dev->pg_size))
 		goto failq;
 	/* Fill ibv_cmd */
-- 
2.25.1


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