From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DAD68ECDFB8 for ; Wed, 18 Jul 2018 14:17:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A223620850 for ; Wed, 18 Jul 2018 14:17:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A223620850 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731527AbeGROzE (ORCPT ); Wed, 18 Jul 2018 10:55:04 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:9691 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1731037AbeGROy1 (ORCPT ); Wed, 18 Jul 2018 10:54:27 -0400 Received: from DGGEMS411-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id D19062DA4D696; Wed, 18 Jul 2018 22:16:03 +0800 (CST) Received: from localhost.localdomain (10.67.212.75) by DGGEMS411-HUB.china.huawei.com (10.3.19.211) with Microsoft SMTP Server id 14.3.382.0; Wed, 18 Jul 2018 22:15:56 +0800 From: John Garry To: , CC: , , , Xiaofei Tan , "John Garry" Subject: [PATCH 5/9] scsi: hisi_sas: relocate some common code for v3 hw Date: Wed, 18 Jul 2018 22:14:29 +0800 Message-ID: <1531923273-193768-6-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1531923273-193768-1-git-send-email-john.garry@huawei.com> References: <1531923273-193768-1-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 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Xiaofei Tan Much code of PM suspend function also exists in soft reset function. This is not concise. So, this patch relocates the common code of these two functions to a separate function. Signed-off-by: Xiaofei Tan Signed-off-by: John Garry --- drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 50 ++++++++++++++++++---------------- 1 file changed, 27 insertions(+), 23 deletions(-) diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c index 70a6aa2..3577843 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c @@ -210,6 +210,8 @@ #define AXI_MASTER_CFG_BASE (0x5000) #define AM_CTRL_GLOBAL (0x0) +#define AM_CTRL_SHUTDOWN_REQ_OFF 0 +#define AM_CTRL_SHUTDOWN_REQ_MSK (0x1 << AM_CTRL_SHUTDOWN_REQ_OFF) #define AM_CURR_TRANS_RETURN (0x150) #define AM_CFG_MAX_TRANS (0x5010) @@ -1976,11 +1978,11 @@ static void phy_get_events_v3_hw(struct hisi_hba *hisi_hba, int phy_no) } -static int soft_reset_v3_hw(struct hisi_hba *hisi_hba) +static int disable_host_v3_hw(struct hisi_hba *hisi_hba) { struct device *dev = hisi_hba->dev; + u32 status, reg_val; int rc; - u32 status; interrupt_disable_v3_hw(hisi_hba); hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE, 0x0); @@ -1990,14 +1992,32 @@ static int soft_reset_v3_hw(struct hisi_hba *hisi_hba) mdelay(10); - hisi_sas_write32(hisi_hba, AXI_MASTER_CFG_BASE + AM_CTRL_GLOBAL, 0x1); + reg_val = hisi_sas_read32(hisi_hba, AXI_MASTER_CFG_BASE + + AM_CTRL_GLOBAL); + reg_val |= AM_CTRL_SHUTDOWN_REQ_MSK; + hisi_sas_write32(hisi_hba, AXI_MASTER_CFG_BASE + + AM_CTRL_GLOBAL, reg_val); /* wait until bus idle */ rc = hisi_sas_read32_poll_timeout(AXI_MASTER_CFG_BASE + AM_CURR_TRANS_RETURN, status, status == 0x3, 10, 100); if (rc) { - dev_err(dev, "axi bus is not idle, rc = %d\n", rc); + dev_err(dev, "axi bus is not idle, rc=%d\n", rc); + return rc; + } + + return 0; +} + +static int soft_reset_v3_hw(struct hisi_hba *hisi_hba) +{ + struct device *dev = hisi_hba->dev; + int rc; + + rc = disable_host_v3_hw(hisi_hba); + if (rc) { + dev_err(dev, "soft reset: disable host failed rc=%d\n", rc); return rc; } @@ -2456,9 +2476,8 @@ static int hisi_sas_v3_suspend(struct pci_dev *pdev, pm_message_t state) struct hisi_hba *hisi_hba = sha->lldd_ha; struct device *dev = hisi_hba->dev; struct Scsi_Host *shost = hisi_hba->shost; - u32 device_state, status; + u32 device_state; int rc; - u32 reg_val; if (!pdev->pm_cap) { dev_err(dev, "PCI PM not supported\n"); @@ -2471,25 +2490,10 @@ static int hisi_sas_v3_suspend(struct pci_dev *pdev, pm_message_t state) scsi_block_requests(shost); set_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags); flush_workqueue(hisi_hba->wq); - /* disable DQ/PHY/bus */ - interrupt_disable_v3_hw(hisi_hba); - hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE, 0x0); - hisi_sas_kill_tasklets(hisi_hba); - hisi_sas_stop_phys(hisi_hba); - - reg_val = hisi_sas_read32(hisi_hba, AXI_MASTER_CFG_BASE + - AM_CTRL_GLOBAL); - reg_val |= 0x1; - hisi_sas_write32(hisi_hba, AXI_MASTER_CFG_BASE + - AM_CTRL_GLOBAL, reg_val); - - /* wait until bus idle */ - rc = hisi_sas_read32_poll_timeout(AXI_MASTER_CFG_BASE + - AM_CURR_TRANS_RETURN, status, - status == 0x3, 10, 100); + rc = disable_host_v3_hw(hisi_hba); if (rc) { - dev_err(dev, "axi bus is not idle, rc = %d\n", rc); + dev_err(dev, "PM suspend: disable host failed rc=%d\n", rc); clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags); clear_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags); scsi_unblock_requests(shost); -- 1.9.1