From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753575AbdARQIi (ORCPT ); Wed, 18 Jan 2017 11:08:38 -0500 Received: from szxga01-in.huawei.com ([58.251.152.64]:37345 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751379AbdARQIg (ORCPT ); Wed, 18 Jan 2017 11:08:36 -0500 From: John Garry To: , CC: , , , , , , Xiang Chen , "John Garry" Subject: [PATCH 4/7] scsi: hisi_sas: modify hard reset for directed-attached disk Date: Thu, 19 Jan 2017 00:32:50 +0800 Message-ID: <1484757173-235951-5-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1484757173-235951-1-git-send-email-john.garry@huawei.com> References: <1484757173-235951-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.67.212.75] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A090203.587F9175.0119,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2013-06-18 04:22:30, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: da76b6e4384c527876389e5eef710650 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Xiang Chen Correctly set registers in v2 for root PHY hardreset for directly attached disk. Signed-off-by: Xiang Chen Signed-off-by: John Garry --- drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c index 452e329..7519772 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c @@ -207,6 +207,8 @@ #define TXID_AUTO (PORT_BASE + 0xb8) #define TXID_AUTO_CT3_OFF 1 #define TXID_AUTO_CT3_MSK (0x1 << TXID_AUTO_CT3_OFF) +#define TX_HARDRST_OFF 2 +#define TX_HARDRST_MSK (0x1 << TX_HARDRST_OFF) #define RX_IDAF_DWORD0 (PORT_BASE + 0xc4) #define RX_IDAF_DWORD1 (PORT_BASE + 0xc8) #define RX_IDAF_DWORD2 (PORT_BASE + 0xcc) @@ -1075,7 +1077,15 @@ static void stop_phy_v2_hw(struct hisi_hba *hisi_hba, int phy_no) static void phy_hard_reset_v2_hw(struct hisi_hba *hisi_hba, int phy_no) { + struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; + u32 txid_auto; + stop_phy_v2_hw(hisi_hba, phy_no); + if (phy->identify.device_type == SAS_END_DEVICE) { + txid_auto = hisi_sas_phy_read32(hisi_hba, phy_no, TXID_AUTO); + hisi_sas_phy_write32(hisi_hba, phy_no, TXID_AUTO, + txid_auto | TX_HARDRST_MSK); + } msleep(100); start_phy_v2_hw(hisi_hba, phy_no); } -- 1.9.1