RDMA/bnxt_re: Disable use of reserved wqes

Disabling the reserved wqes logic for Gen P5/P7 devices
because this workaround is required only for legacy devices.

Fixes: ecb53febfcad ("RDMA/bnxt_en: Enable RDMA driver support for 57500 chip")
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Link: https://patch.msgid.link/20241217102649.1377704-3-kalesh-anakkur.purayil@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

diff --git a/drivers/infiniband/hw/bnxt_re/qplib_sp.c b/drivers/infiniband/hw/bnxt_re/qplib_sp.c
index 73c9baaebb4e8b50656aa3ff529fbc8e7aa01021..776f8f1f1432f0372a5408a68e652913f4105bcc 100644 (file)
--- a/drivers/infiniband/hw/bnxt_re/qplib_sp.c
+++ b/drivers/infiniband/hw/bnxt_re/qplib_sp.c
@@ -130,11 +130,13 @@ int bnxt_qplib_get_dev_attr(struct bnxt_qplib_rcfw *rcfw,
                sb->max_qp_init_rd_atom > BNXT_QPLIB_MAX_OUT_RD_ATOM ?
                BNXT_QPLIB_MAX_OUT_RD_ATOM : sb->max_qp_init_rd_atom;
        attr->max_qp_wqes = le16_to_cpu(sb->max_qp_wr) - 1;
-       /*
-        * 128 WQEs needs to be reserved for the HW (8916). Prevent
-        * reporting the max number
-        */
-       attr->max_qp_wqes -= BNXT_QPLIB_RESERVED_QP_WRS + 1;
+       if (!bnxt_qplib_is_chip_gen_p5_p7(rcfw->res->cctx)) {
+               /*
+                * 128 WQEs needs to be reserved for the HW (8916). Prevent
+                * reporting the max number on legacy devices
+                */
+               attr->max_qp_wqes -= BNXT_QPLIB_RESERVED_QP_WRS + 1;
+       }
 
        attr->max_qp_sges = cctx->modes.wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE ?
                            min_t(u32, sb->max_sge_var_wqe, BNXT_VAR_MAX_SGE) : 6;