From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933689AbeAXMxf (ORCPT ); Wed, 24 Jan 2018 07:53:35 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:39294 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933386AbeAXMxd (ORCPT ); Wed, 24 Jan 2018 07:53:33 -0500 From: Ivan Mikhaylov To: "David S . Miller" , Christian Lamparter , Rob Herring Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 1/2] net/ibm/emac: add 8192 rx/tx fifo size Date: Wed, 24 Jan 2018 15:53:24 +0300 X-Mailer: git-send-email 2.10.1 (Apple Git-78) X-MIMETrack: Itemize by SMTP Server on D06ML001/06/M/IBM(Release 9.0.1FP8HF179 | April 20, 2017) at 24/01/2018 12:53:27, Serialize by Router on D06ML001/06/M/IBM(Release 9.0.1FP8HF179 | April 20, 2017) at 24/01/2018 12:53:28, Serialize complete at 24/01/2018 12:53:28 X-TNEFEvaluated: 1 X-TM-AS-GCONF: 00 x-cbid: 18012412-0020-0000-0000-000003EE32A6 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18012412-0021-0000-0000-000042808158 Message-Id: <20180124125325.56824-1-ivan@de.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2018-01-24_06:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1801240173 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org emac4syn chips has availability to use 8192 rx/tx fifo buffer sizes, in current state if we set it up in dts 8192 as example, we will get only 2048 which may impact on network speed. Signed-off-by: Ivan Mikhaylov --- drivers/net/ethernet/ibm/emac/core.c | 6 ++++++ drivers/net/ethernet/ibm/emac/emac.h | 2 ++ 2 files changed, 8 insertions(+), 0 deletions(-) diff --git a/drivers/net/ethernet/ibm/emac/core.c b/drivers/net/ethernet/ibm/emac/core.c index 7feff24..241db31 100644 --- a/drivers/net/ethernet/ibm/emac/core.c +++ b/drivers/net/ethernet/ibm/emac/core.c @@ -494,6 +494,9 @@ static u32 __emac_calc_base_mr1(struct emac_instance *dev, int tx_size, int rx_s case 16384: ret |= EMAC_MR1_RFS_16K; break; + case 8192: + ret |= EMAC4_MR1_RFS_8K; + break; case 4096: ret |= EMAC_MR1_RFS_4K; break; @@ -516,6 +519,9 @@ static u32 __emac4_calc_base_mr1(struct emac_instance *dev, int tx_size, int rx_ case 16384: ret |= EMAC4_MR1_TFS_16K; break; + case 8192: + ret |= EMAC4_MR1_TFS_8K; + break; case 4096: ret |= EMAC4_MR1_TFS_4K; break; diff --git a/drivers/net/ethernet/ibm/emac/emac.h b/drivers/net/ethernet/ibm/emac/emac.h index 5afcc27..d0a0e3b 100644 --- a/drivers/net/ethernet/ibm/emac/emac.h +++ b/drivers/net/ethernet/ibm/emac/emac.h @@ -151,9 +151,11 @@ struct emac_regs { #define EMAC4_MR1_RFS_2K 0x00100000 #define EMAC4_MR1_RFS_4K 0x00180000 +#define EMAC4_MR1_RFS_8K 0x00200000 #define EMAC4_MR1_RFS_16K 0x00280000 #define EMAC4_MR1_TFS_2K 0x00020000 #define EMAC4_MR1_TFS_4K 0x00030000 +#define EMAC4_MR1_TFS_8K 0x00040000 #define EMAC4_MR1_TFS_16K 0x00050000 #define EMAC4_MR1_TR 0x00008000 #define EMAC4_MR1_MWSW_001 0x00001000 -- 1.7.1