Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752730AbcDWKYs (ORCPT ); Sat, 23 Apr 2016 06:24:48 -0400 Received: from szxga02-in.huawei.com ([119.145.14.65]:29609 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751920AbcDWKSP (ORCPT ); Sat, 23 Apr 2016 06:18:15 -0400 From: Lijun Ou To: , , , , , , , CC: , , , , , , , , , , , Subject: [PATCH v5 04/21] IB/hns: Add RoCE engine reset function Date: Sat, 23 Apr 2016 18:26:42 +0800 Message-ID: <1461407219-72027-5-git-send-email-oulijun@huawei.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1461407219-72027-1-git-send-email-oulijun@huawei.com> References: <1461407219-72027-1-git-send-email-oulijun@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.71.200.31] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020202.571B4BE3.00FB,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: b1ca02c344caefc03ffdd00774f712ef Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5311 Lines: 180 This patch mainly added RoCE engine reset process in RoCE driver. it is necessary when RoCE was loaded and removed. Signed-off-by: Lijun Ou Signed-off-by: Wei Hu(Xavier) --- drivers/infiniband/hw/hns/hns_roce_device.h | 7 ++++ drivers/infiniband/hw/hns/hns_roce_hw_v1.c | 54 +++++++++++++++++++++++++++++ drivers/infiniband/hw/hns/hns_roce_hw_v1.h | 17 +++++++++ drivers/infiniband/hw/hns/hns_roce_main.c | 18 ++++++++-- 4 files changed, 94 insertions(+), 2 deletions(-) create mode 100644 drivers/infiniband/hw/hns/hns_roce_hw_v1.c create mode 100644 drivers/infiniband/hw/hns/hns_roce_hw_v1.h diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h index b48f518..24ac1a8 100644 --- a/drivers/infiniband/hw/hns/hns_roce_device.h +++ b/drivers/infiniband/hw/hns/hns_roce_device.h @@ -33,6 +33,10 @@ struct hns_roce_caps { u8 num_ports; }; +struct hns_roce_hw { + int (*reset)(struct hns_roce_dev *hr_dev, u32 val); +}; + struct hns_roce_dev { struct ib_device ib_dev; struct platform_device *pdev; @@ -44,6 +48,9 @@ struct hns_roce_dev { int cmd_mod; int loop_idc; + struct hns_roce_hw *hw; }; +extern struct hns_roce_hw hns_roce_hw_v1; + #endif /* _HNS_ROCE_DEVICE_H */ diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c new file mode 100644 index 0000000..ea39e56 --- /dev/null +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c @@ -0,0 +1,54 @@ +/* + * Copyright (c) 2016 Hisilicon Limited. + * + * Authors: Wei Hu + * Authors: Znlong + * Authors: oulijun + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + */ + +#include +#include +#include +#include +#include +#include "hns_roce_device.h" +#include "hns_roce_hw_v1.h" + +/** + * hns_roce_v1_reset - reset roce + * @hr_dev: roce device struct pointer + * @val: 1 -- drop reset, 0 -- reset + * return 0 - success , negative --fail + */ +int hns_roce_v1_reset(struct hns_roce_dev *hr_dev, u32 val) +{ + struct device_node *dsaf_node; + struct device *dev = &hr_dev->pdev->dev; + struct device_node *np = dev->of_node; + int ret; + + dsaf_node = of_parse_phandle(np, "dsaf-handle", 0); + + if (!val) { + ret = hns_dsaf_roce_reset(&dsaf_node->fwnode, 0); + } else { + ret = hns_dsaf_roce_reset(&dsaf_node->fwnode, 0); + if (ret) + return ret; + + msleep(SLEEP_TIME_INTERVAL); + ret = hns_dsaf_roce_reset(&dsaf_node->fwnode, 1); + } + + return ret; +} + +struct hns_roce_hw hns_roce_hw_v1 = { + .reset = hns_roce_v1_reset, +}; diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.h b/drivers/infiniband/hw/hns/hns_roce_hw_v1.h new file mode 100644 index 0000000..164041d --- /dev/null +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.h @@ -0,0 +1,17 @@ +/* + * Copyright (c) 2016 Hisilicon Limited. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef _HNS_ROCE_HW_V1_H +#define _HNS_ROCE_HW_V1_H + +#define SLEEP_TIME_INTERVAL 20 + +extern int hns_dsaf_roce_reset(struct fwnode_handle *dsaf_fwnode, u32 val); + +#endif diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c index 5bd84f2..df3116f 100644 --- a/drivers/infiniband/hw/hns/hns_roce_main.c +++ b/drivers/infiniband/hw/hns/hns_roce_main.c @@ -53,7 +53,9 @@ int hns_roce_get_cfg(struct hns_roce_dev *hr_dev) struct platform_device *pdev = NULL; struct resource *res; - if (!of_device_is_compatible(np, "hisilicon,hns-roce-v1")) { + if (of_device_is_compatible(np, "hisilicon,hns-roce-v1")) { + hr_dev->hw = &hns_roce_hw_v1; + } else { dev_err(dev, "device no compatible!\n"); return -EINVAL; } @@ -98,6 +100,10 @@ int hns_roce_get_cfg(struct hns_roce_dev *hr_dev) return 0; } +int hns_roce_engine_reset(struct hns_roce_dev *hr_dev, u32 val) +{ + return hr_dev->hw->reset(hr_dev, val); +} /** * hns_roce_probe - RoCE driver entrance * @pdev: pointer to platform device @@ -131,13 +137,18 @@ static int hns_roce_probe(struct platform_device *pdev) ret = -EIO; goto error_failed_get_cfg; } - ret = hns_roce_get_cfg(hr_dev); if (ret) { dev_err(dev, "Get Configuration failed!\n"); goto error_failed_get_cfg; } + ret = hns_roce_engine_reset(hr_dev, 1); + if (ret) { + dev_err(dev, "Reset roce engine failed!\n"); + goto error_failed_get_cfg; + } + error_failed_get_cfg: ib_dealloc_device(&hr_dev->ib_dev); return ret; @@ -152,6 +163,9 @@ static int hns_roce_remove(struct platform_device *pdev) struct hns_roce_dev *hr_dev = platform_get_drvdata(pdev); int ret = 0; + ret = hns_roce_engine_reset(hr_dev, 0); + if (ret) + return ret; ib_dealloc_device(&hr_dev->ib_dev); return ret; -- 1.9.1