From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755238AbcFPO2V (ORCPT ); Thu, 16 Jun 2016 10:28:21 -0400 Received: from szxga01-in.huawei.com ([58.251.152.64]:2172 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754379AbcFPOX0 (ORCPT ); Thu, 16 Jun 2016 10:23:26 -0400 From: Lijun Ou To: , , , , , , CC: , , , , , , , , , , , Subject: [PATCH v10 03/22] IB/hns: Add initial main frame driver and get cfg info Date: Thu, 16 Jun 2016 22:35:11 +0800 Message-ID: <1466087730-54856-4-git-send-email-oulijun@huawei.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1466087730-54856-1-git-send-email-oulijun@huawei.com> References: <1466087730-54856-1-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=0001.0A090202.5762B65B.00D7,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: d84782a2e70024bfe145d856266a6d58 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch mainly added the initial bare main driver. It could get the relative configure information of net node. Signed-off-by: Wei Hu Signed-off-by: Nenglong Zhao Signed-off-by: Lijun Ou --- PATCH v9: This fixes comments given by Leon Romanovsky over the PATCH v8: Link: https://lkml.org/lkml/2016/6/9/56 PATCH v8/v7/v6: - No change over the PATCH v5 PATCH v5: - The initial patch which was redesigned based on the second patch in PATCH v4 --- --- drivers/infiniband/hw/hns/hns_roce_device.h | 73 ++++++++++ drivers/infiniband/hw/hns/hns_roce_main.c | 200 ++++++++++++++++++++++++++++ 2 files changed, 273 insertions(+) create mode 100644 drivers/infiniband/hw/hns/hns_roce_device.h create mode 100644 drivers/infiniband/hw/hns/hns_roce_main.c diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h new file mode 100644 index 0000000..946b470 --- /dev/null +++ b/drivers/infiniband/hw/hns/hns_roce_device.h @@ -0,0 +1,73 @@ +/* + * Copyright (c) 2016 Hisilicon Limited. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#ifndef _HNS_ROCE_DEVICE_H +#define _HNS_ROCE_DEVICE_H + +#include +#include +#include +#include +#include +#include +#include +#include + +#define DRV_NAME "hns_roce" + +#define HNS_ROCE_MAX_IRQ_NUM 34 +#define HNS_ROCE_MAX_PORTS 6 + +struct hns_roce_ib_iboe { + struct net_device *netdevs[HNS_ROCE_MAX_PORTS]; + u8 phy_port[HNS_ROCE_MAX_PORTS]; +}; + +struct hns_roce_caps { + u8 num_ports; +}; + +struct hns_roce_dev { + struct ib_device ib_dev; + struct platform_device *pdev; + const char *irq_names; + struct hns_roce_ib_iboe iboe; + + int irq[HNS_ROCE_MAX_IRQ_NUM]; + u8 __iomem *reg_base; + struct hns_roce_caps caps; + + int cmd_mod; + int loop_idc; +}; + +#endif /* _HNS_ROCE_DEVICE_H */ diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c new file mode 100644 index 0000000..8924ce3 --- /dev/null +++ b/drivers/infiniband/hw/hns/hns_roce_main.c @@ -0,0 +1,200 @@ +/* + * Copyright (c) 2016 Hisilicon Limited. + * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "hns_roce_device.h" + +static int hns_roce_get_cfg(struct hns_roce_dev *hr_dev) +{ + int i; + u8 phy_port; + int port_cnt = 0; + struct device *dev = &hr_dev->pdev->dev; + struct device_node *np = dev->of_node; + struct device_node *net_node; + struct net_device *netdev = NULL; + struct platform_device *pdev = NULL; + struct resource *res; + + if (!of_device_is_compatible(np, "hisilicon,hns-roce-v1")) { + dev_err(dev, "device no compatible!\n"); + return -EINVAL; + } + + res = platform_get_resource(hr_dev->pdev, IORESOURCE_MEM, 0); + hr_dev->reg_base = devm_ioremap_resource(dev, res); + if (!hr_dev->reg_base) + return -ENOMEM; + + for (i = 0; i < HNS_ROCE_MAX_PORTS; i++) { + net_node = of_parse_phandle(np, "eth-handle", i); + if (net_node) { + pdev = of_find_device_by_node(net_node); + netdev = platform_get_drvdata(pdev); + phy_port = (u8)i; + if (netdev) { + hr_dev->iboe.netdevs[port_cnt] = netdev; + hr_dev->iboe.phy_port[port_cnt] = phy_port; + } else { + return -ENODEV; + } + port_cnt++; + } + } + + hr_dev->caps.num_ports = port_cnt; + + /* Cmd issue mode: 0 is poll, 1 is event */ + hr_dev->cmd_mod = 1; + hr_dev->loop_idc = 0; + + for (i = 0; i < HNS_ROCE_MAX_IRQ_NUM; i++) { + hr_dev->irq[i] = platform_get_irq(hr_dev->pdev, i); + if (hr_dev->irq[i] <= 0) { + dev_err(dev, "Get No.%d irq resource failed!\n", i); + return -EINVAL; + } + + if (of_property_read_string_index(np, "interrupt-names", i, + &hr_dev->irq_names)) + return -EINVAL; + } + + return 0; +} + +/** +* hns_roce_probe - RoCE driver entrance +* @pdev: pointer to platform device +* Return : int +* +*/ +static int hns_roce_probe(struct platform_device *pdev) +{ + int ret; + struct hns_roce_dev *hr_dev; + struct device *dev = &pdev->dev; + + hr_dev = (struct hns_roce_dev *)ib_alloc_device(sizeof(*hr_dev)); + if (!hr_dev) + return -ENOMEM; + + memset((u8 *)hr_dev + sizeof(struct ib_device), 0, + sizeof(struct hns_roce_dev) - sizeof(struct ib_device)); + + hr_dev->pdev = pdev; + platform_set_drvdata(pdev, hr_dev); + + if (!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64ULL))) + dev_info(dev, "set mask to 64bit\n"); + else if (!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32ULL))) + dev_info(dev, "set mask to 32bit\n"); + else { + dev_err(dev, "No usable DMA addressing mode\n"); + 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; + } + +error_failed_get_cfg: + ib_dealloc_device(&hr_dev->ib_dev); + + return ret; +} + +/** +* hns_roce_remove - remove roce device +* @pdev: pointer to platform device +*/ +static int hns_roce_remove(struct platform_device *pdev) +{ + struct hns_roce_dev *hr_dev = platform_get_drvdata(pdev); + + ib_dealloc_device(&hr_dev->ib_dev); + + return 0; +} + +static const struct of_device_id hns_roce_of_match[] = { + { .compatible = "hisilicon,hns-roce-v1",}, + {}, +}; +MODULE_DEVICE_TABLE(of, hns_roce_of_match); + +static struct platform_driver hns_roce_driver = { + .probe = hns_roce_probe, + .remove = hns_roce_remove, + .driver = { + .name = DRV_NAME, + .of_match_table = hns_roce_of_match, + }, +}; + +module_platform_driver(hns_roce_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Wei Hu "); +MODULE_AUTHOR("Nenglong Zhao "); +MODULE_AUTHOR("Lijun Ou "); +MODULE_DESCRIPTION("HISILICON RoCE driver"); +MODULE_ALIAS("platform:" DRV_NAME); -- 1.9.1