RDMA/bnxt_re: Fix the offset for GenP7 adapters for user applications

User Doorbell page indexes start at an offset for GenP7 adapters.
Fix the offset that will be used for user doorbell page indexes.

Fixes: a62d68581441 ("RDMA/bnxt_re: Update the BAR offsets")
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Link: https://lore.kernel.org/r/1702987900-5363-1-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

diff --git a/drivers/infiniband/hw/bnxt_re/main.c b/drivers/infiniband/hw/bnxt_re/main.c
index eb03ebad2e5adbcd33d3dd7d6b0c4c7d614ed1a6..f022c922fae5183cb6860092e5bd0662d22f1764 100644 (file)
--- a/drivers/infiniband/hw/bnxt_re/main.c
+++ b/drivers/infiniband/hw/bnxt_re/main.c
@@ -108,12 +108,14 @@ static void bnxt_re_set_db_offset(struct bnxt_re_dev *rdev)
                dev_info(rdev_to_dev(rdev),
                         "Couldn't get DB bar size, Low latency framework is disabled\n");
        /* set register offsets for both UC and WC */
-       if (bnxt_qplib_is_chip_gen_p7(cctx))
+       if (bnxt_qplib_is_chip_gen_p7(cctx)) {
                res->dpi_tbl.ucreg.offset = offset;
-       else
+               res->dpi_tbl.wcreg.offset = en_dev->l2_db_size;
+       } else {
                res->dpi_tbl.ucreg.offset = res->is_vf ? BNXT_QPLIB_DBR_VF_DB_OFFSET :
                                                         BNXT_QPLIB_DBR_PF_DB_OFFSET;
-       res->dpi_tbl.wcreg.offset = res->dpi_tbl.ucreg.offset;
+               res->dpi_tbl.wcreg.offset = res->dpi_tbl.ucreg.offset;
+       }
 
        /* If WC mapping is disabled by L2 driver then en_dev->l2_db_size
         * is equal to the DB-Bar actual size. This indicates that L2