Commit 6e454e88 authored by Selvin Xavier's avatar Selvin Xavier Committed by Wen Zhiwei
Browse files

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

stable inclusion
from stable-v6.6.59
commit 1aee34ed99e91ed9c7d7544f420eb004ba344e25
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/IB3ENL

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1aee34ed99e91ed9c7d7544f420eb004ba344e25



--------------------------------

commit 9248f363d0791a548a9c7711365b8be4c70bd375 upstream.

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: default avatarSelvin Xavier <selvin.xavier@broadcom.com>
Link: https://lore.kernel.org/r/1702987900-5363-1-git-send-email-selvin.xavier@broadcom.com


Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarWen Zhiwei <wenzhiwei@kylinos.cn>
parent 64105897

drivers/infiniband/hw/bnxt_re/main.c

+5 −3
Original line number Diff line number Diff line
@@ -107,12 +107,14 @@ 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;

	}



	/* 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