[PATCH for-rc 01/10] RDMA/bnxt_re: Fix the max CQ WQEs for older adapters

[Selvin Xavier <selvin.xavier@broadcom.com>]

From: Abhishek Mohapatra <abhishek.mohapatra@broadcom.com>

Older adapters doesn't support the MAX CQ WQEs reported by
older FW. So restrict the value reported to 1M always for
older adapters.

Fixes: 1ac5a4047975 ("RDMA/bnxt_re: Add bnxt_re RoCE driver")
Signed-off-by: Abhishek Mohapatra<abhishek.mohapatra@broadcom.com>
Reviewed-by: Chandramohan Akula <chandramohan.akula@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
---
 drivers/infiniband/hw/bnxt_re/qplib_sp.c | 2 ++
 drivers/infiniband/hw/bnxt_re/qplib_sp.h | 1 +
 2 files changed, 3 insertions(+)

diff --git a/drivers/infiniband/hw/bnxt_re/qplib_sp.c b/drivers/infiniband/hw/bnxt_re/qplib_sp.c
index 4f75e7e..32c1cc7 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_sp.c
+++ b/drivers/infiniband/hw/bnxt_re/qplib_sp.c
@@ -140,6 +140,8 @@ int bnxt_qplib_get_dev_attr(struct bnxt_qplib_rcfw *rcfw,
 			    min_t(u32, sb->max_sge_var_wqe, BNXT_VAR_MAX_SGE) : 6;
 	attr->max_cq = le32_to_cpu(sb->max_cq);
 	attr->max_cq_wqes = le32_to_cpu(sb->max_cqe);
+	if (!bnxt_qplib_is_chip_gen_p7(rcfw->res->cctx))
+		attr->max_cq_wqes = min_t(u32, BNXT_QPLIB_MAX_CQ_WQES, attr->max_cq_wqes);
 	attr->max_cq_sges = attr->max_qp_sges;
 	attr->max_mr = le32_to_cpu(sb->max_mr);
 	attr->max_mw = le32_to_cpu(sb->max_mw);
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_sp.h b/drivers/infiniband/hw/bnxt_re/qplib_sp.h
index acd9c14..ecf3f45 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_sp.h
+++ b/drivers/infiniband/hw/bnxt_re/qplib_sp.h
@@ -56,6 +56,7 @@ struct bnxt_qplib_dev_attr {
 	u32				max_qp_wqes;
 	u32				max_qp_sges;
 	u32				max_cq;
+#define BNXT_QPLIB_MAX_CQ_WQES          0xfffff
 	u32				max_cq_wqes;
 	u32				max_cq_sges;
 	u32				max_mr;
-- 
2.5.5