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From:   Sasha Levin <Alexander.Levin@microsoft.com>
To:     "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "stable@vger.kernel.org" <stable@vger.kernel.org>
CC:     Shiraz Saleem <shiraz.saleem@intel.com>,
        Jason Gunthorpe <jgg@mellanox.com>,
        Sasha Levin <Alexander.Levin@microsoft.com>
Subject: [PATCH AUTOSEL for 4.15 002/124] i40iw: Correct Q1/XF object count
 equation
Thread-Topic: [PATCH AUTOSEL for 4.15 002/124] i40iw: Correct Q1/XF object
 count equation
Thread-Index: AQHTv5mCGdqHmq6di0e1k7xsAt8QoQ==
Date:   Mon, 19 Mar 2018 15:46:56 +0000
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From: Shiraz Saleem <shiraz.saleem@intel.com>

[ Upstream commit fe99afd1febd74e0ef1fed7e3283f09effe1f4f0 ]

Lower Inbound RDMA Read Queue (Q1) object count by a factor of 2
as it is incorrectly doubled. Also, round up Q1 and Transmit FIFO (XF)
object count to power of 2 to satisfy hardware requirement.

Fixes: 86dbcd0f12e9 ("i40iw: add file to handle cqp calls")
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 drivers/infiniband/hw/i40iw/i40iw_ctrl.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/i40iw/i40iw_ctrl.c b/drivers/infiniband/=
hw/i40iw/i40iw_ctrl.c
index da9821a10e0d..1b9ca09d3cee 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_ctrl.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_ctrl.c
@@ -3928,8 +3928,10 @@ enum i40iw_status_code i40iw_config_fpm_values(struc=
t i40iw_sc_dev *dev, u32 qp_
 		hmc_info->hmc_obj[I40IW_HMC_IW_APBVT_ENTRY].cnt =3D 1;
 		hmc_info->hmc_obj[I40IW_HMC_IW_MR].cnt =3D mrwanted;
=20
-		hmc_info->hmc_obj[I40IW_HMC_IW_XF].cnt =3D I40IW_MAX_WQ_ENTRIES * qpwant=
ed;
-		hmc_info->hmc_obj[I40IW_HMC_IW_Q1].cnt =3D 4 * I40IW_MAX_IRD_SIZE * qpwa=
nted;
+		hmc_info->hmc_obj[I40IW_HMC_IW_XF].cnt =3D
+			roundup_pow_of_two(I40IW_MAX_WQ_ENTRIES * qpwanted);
+		hmc_info->hmc_obj[I40IW_HMC_IW_Q1].cnt =3D
+			roundup_pow_of_two(2 * I40IW_MAX_IRD_SIZE * qpwanted);
 		hmc_info->hmc_obj[I40IW_HMC_IW_XFFL].cnt =3D
 			hmc_info->hmc_obj[I40IW_HMC_IW_XF].cnt / hmc_fpm_misc->xf_block_size;
 		hmc_info->hmc_obj[I40IW_HMC_IW_Q1FL].cnt =3D
--=20
2.14.1