From patchwork Sun Dec 3 12:33:05 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Salil Mehta X-Patchwork-Id: 10089229 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 10370602C8 for ; Sun, 3 Dec 2017 12:34:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E9EDF28F0C for ; Sun, 3 Dec 2017 12:34:55 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DDED528F1A; Sun, 3 Dec 2017 12:34:55 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9394628F0C for ; Sun, 3 Dec 2017 12:34:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752481AbdLCMew (ORCPT ); Sun, 3 Dec 2017 07:34:52 -0500 Received: from szxga05-in.huawei.com ([45.249.212.191]:11501 "EHLO szxga05-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752298AbdLCMet (ORCPT ); Sun, 3 Dec 2017 07:34:49 -0500 Received: from 172.30.72.58 (EHLO DGGEMS408-HUB.china.huawei.com) ([172.30.72.58]) by dggrg05-dlp.huawei.com (MOS 4.4.6-GA FastPath queued) with ESMTP id DLU87757; Sun, 03 Dec 2017 20:34:16 +0800 (CST) Received: from S00293818-DELL1.china.huawei.com (10.47.82.162) by DGGEMS408-HUB.china.huawei.com (10.3.19.208) with Microsoft SMTP Server id 14.3.361.1; Sun, 3 Dec 2017 20:34:09 +0800 From: Salil Mehta To: CC: , , , , , , , Subject: [PATCH net-next 6/8] net: hns3: Add mailbox support to PF driver Date: Sun, 3 Dec 2017 12:33:05 +0000 Message-ID: <20171203123307.19820-7-salil.mehta@huawei.com> X-Mailer: git-send-email 2.8.3 In-Reply-To: <20171203123307.19820-1-salil.mehta@huawei.com> References: <20171203123307.19820-1-salil.mehta@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.47.82.162] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A090204.5A23EF49.006B, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2014-11-16 11:51:01, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 92cf624ecfa10e91089c0e4327ad374b Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Command queue provides the provision of Mailbox command which can be used for communication between PF and VF. PF handles messages from various VFs for fetching various information like, queue, vlan, link status related etc. It also handles the request from various VFs to perform certain privileged operations. This patch adds the support of a message handler for handling such various command requests from VF. Signed-off-by: Salil Mehta Signed-off-by: lipeng --- .../net/ethernet/hisilicon/hns3/hns3pf/Makefile | 2 +- .../ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 1 + .../ethernet/hisilicon/hns3/hns3pf/hclge_main.h | 2 + .../net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c | 309 +++++++++++++++++++++ 4 files changed, 313 insertions(+), 1 deletion(-) create mode 100644 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/Makefile b/drivers/net/ethernet/hisilicon/hns3/hns3pf/Makefile index d077fa02b66e..393a1b379efb 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/Makefile +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/Makefile @@ -5,6 +5,6 @@ ccflags-y := -Idrivers/net/ethernet/hisilicon/hns3 obj-$(CONFIG_HNS3_HCLGE) += hclge.o -hclge-objs = hclge_main.o hclge_cmd.o hclge_mdio.o hclge_tm.o +hclge-objs = hclge_main.o hclge_cmd.o hclge_mdio.o hclge_tm.o hclge_mbx.o hclge-$(CONFIG_HNS3_DCB) += hclge_dcb.o diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c index 063be1c50a1d..af9d92a3800e 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c @@ -21,6 +21,7 @@ #include "hclge_cmd.h" #include "hclge_dcb.h" #include "hclge_main.h" +#include "hclge_mbx.h" #include "hclge_mdio.h" #include "hclge_tm.h" #include "hnae3.h" diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h index aacec438b933..028817c7d67c 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h @@ -554,4 +554,6 @@ int hclge_set_vf_vlan_common(struct hclge_dev *vport, int vfid, int hclge_buffer_alloc(struct hclge_dev *hdev); int hclge_rss_init_hw(struct hclge_dev *hdev); + +void hclge_mbx_handler(struct hclge_dev *hdev); #endif diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c new file mode 100644 index 000000000000..da8b0c9ef353 --- /dev/null +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c @@ -0,0 +1,309 @@ +/* + * Copyright (c) 2016-2017 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. + */ + +#include "hclge_main.h" +#include "hclge_mbx.h" +#include "hnae3.h" + +/* hclge_gen_resp_to_vf: used to generate a synchronous response to VF when PF + * receives a mailbox message from VF. + * @vport: pointer to struct hclge_vport + * @vf_to_pf_req: pointer to hclge_mbx_vf_to_pf_cmd of the original mailbox + * message + * @resp_status: indicate to VF whether its request success(0) or failed. + */ +static int hclge_gen_resp_to_vf(struct hclge_vport *vport, + struct hclge_mbx_vf_to_pf_cmd *vf_to_pf_req, + int resp_status, + u8 *resp_data, u16 resp_data_len) +{ + struct hclge_mbx_pf_to_vf_cmd *resp_pf_to_vf; + struct hclge_dev *hdev = vport->back; + enum hclge_cmd_status status; + struct hclge_desc desc; + + resp_pf_to_vf = (struct hclge_mbx_pf_to_vf_cmd *)desc.data; + + if (resp_data_len > HCLGE_MBX_MAX_RESP_DATA_SIZE) { + dev_err(&hdev->pdev->dev, + "PF fail to gen resp to VF len %d exceeds max len %d\n", + resp_data_len, + HCLGE_MBX_MAX_RESP_DATA_SIZE); + } + + hclge_cmd_setup_basic_desc(&desc, HCLGEVF_OPC_MBX_PF_TO_VF, false); + + resp_pf_to_vf->dest_vfid = cpu_to_le16(vf_to_pf_req->mbx_src_vfid); + resp_pf_to_vf->msg_len = vf_to_pf_req->msg_len; + + resp_pf_to_vf->msg[0] = HCLGE_MBX_PF_VF_RESP; + resp_pf_to_vf->msg[1] = vf_to_pf_req->msg[0]; + resp_pf_to_vf->msg[2] = vf_to_pf_req->msg[1]; + resp_pf_to_vf->msg[3] = (resp_status == 0) ? 0 : 1; + + if (resp_data && resp_data_len > 0) + memcpy(&resp_pf_to_vf->msg[4], resp_data, resp_data_len); + + status = hclge_cmd_send(&hdev->hw, &desc, 1); + if (status) + dev_err(&hdev->pdev->dev, + "PF failed(=%d) to send response to VF\n", status); + + return status; +} + +static int hclge_send_mbx_msg(struct hclge_vport *vport, u8 *msg, u16 msg_len, + u16 mbx_opcode, u16 dest_vfid) +{ + struct hclge_mbx_pf_to_vf_cmd *resp_pf_to_vf; + struct hclge_dev *hdev = vport->back; + enum hclge_cmd_status status; + struct hclge_desc desc; + + resp_pf_to_vf = (struct hclge_mbx_pf_to_vf_cmd *)desc.data; + + hclge_cmd_setup_basic_desc(&desc, HCLGEVF_OPC_MBX_PF_TO_VF, false); + + resp_pf_to_vf->dest_vfid = dest_vfid; + resp_pf_to_vf->msg_len = msg_len; + resp_pf_to_vf->msg[0] = mbx_opcode; + + memcpy(&resp_pf_to_vf->msg[1], msg, msg_len); + + status = hclge_cmd_send(&hdev->hw, &desc, 1); + if (status) + dev_err(&hdev->pdev->dev, + "PF failed(=%d) to send mailbox message to VF\n", + status); + + return status; +} + +static int hclge_set_vf_promisc_mode(struct hclge_vport *vport, + struct hclge_mbx_vf_to_pf_cmd *req) +{ + bool en = req->msg[1] ? true : false; + struct hclge_promisc_param param; + + /* always enable broadcast promisc bit */ + hclge_promisc_param_init(¶m, en, en, true, vport->vport_id); + return hclge_cmd_set_promisc_mode(vport->back, ¶m); +} + +static int hclge_set_vf_uc_mac_addr(struct hclge_vport *vport, + struct hclge_mbx_vf_to_pf_cmd *mbx_req, + bool gen_resp) +{ + const u8 *mac_addr = (const u8 *)(&mbx_req->msg[2]); + struct hclge_dev *hdev = vport->back; + int status; + + if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_UC_MODIFY) { + const u8 *old_addr = (const u8 *)(&mbx_req->msg[8]); + + hclge_rm_uc_addr_common(vport, old_addr); + status = hclge_add_uc_addr_common(vport, mac_addr); + } else if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_UC_ADD) { + status = hclge_add_uc_addr_common(vport, mac_addr); + } else if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_UC_REMOVE) { + status = hclge_rm_uc_addr_common(vport, mac_addr); + } else { + dev_err(&hdev->pdev->dev, + "failed to set unicast mac addr, unknown subcode %d\n", + mbx_req->msg[1]); + return -EIO; + } + + if (gen_resp) + hclge_gen_resp_to_vf(vport, mbx_req, status, NULL, 0); + + return 0; +} + +static int hclge_set_vf_mc_mac_addr(struct hclge_vport *vport, + struct hclge_mbx_vf_to_pf_cmd *mbx_req, + bool gen_resp) +{ + const u8 *mac_addr = (const u8 *)(&mbx_req->msg[2]); + struct hclge_dev *hdev = vport->back; + int status; + + if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_MC_ADD) { + status = hclge_add_mc_addr_common(vport, mac_addr); + } else if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_MC_REMOVE) { + status = hclge_rm_mc_addr_common(vport, mac_addr); + } else if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_MC_FUNC_MTA_ENABLE) { + u8 func_id = vport->vport_id; + bool enable = mbx_req->msg[2]; + + status = hclge_cfg_func_mta_filter(hdev, func_id, enable); + } else { + dev_err(&hdev->pdev->dev, + "failed to set mcast mac addr, unknown subcode %d\n", + mbx_req->msg[1]); + return -EIO; + } + + if (gen_resp) + hclge_gen_resp_to_vf(vport, mbx_req, status, NULL, 0); + + return 0; +} + +static int hclge_set_vf_vlan_cfg(struct hclge_vport *vport, + struct hclge_mbx_vf_to_pf_cmd *mbx_req, + bool gen_resp) +{ + struct hclge_dev *hdev = vport->back; + int status = 0; + + if (mbx_req->msg[1] == HCLGE_MBX_VLAN_FILTER) { + u16 vlan, proto; + bool is_kill; + + is_kill = !!mbx_req->msg[2]; + memcpy(&vlan, &mbx_req->msg[3], sizeof(vlan)); + memcpy(&proto, &mbx_req->msg[5], sizeof(proto)); + status = hclge_set_vf_vlan_common(hdev, vport->vport_id, + is_kill, vlan, 0, proto); + } + + if (gen_resp) + status = hclge_gen_resp_to_vf(vport, mbx_req, status, NULL, 0); + + return status; +} + +static int hclge_get_vf_tcinfo(struct hclge_vport *vport, + struct hclge_mbx_vf_to_pf_cmd *mbx_req, + bool gen_resp) +{ + struct hclge_dev *hdev = vport->back; + int ret; + + ret = hclge_gen_resp_to_vf(vport, mbx_req, 0, &hdev->hw_tc_map, + sizeof(u8)); + + return ret; +} + +static int hclge_get_vf_queue_info(struct hclge_vport *vport, + struct hclge_mbx_vf_to_pf_cmd *mbx_req, + bool gen_resp) +{ +#define HCLGE_TQPS_RSS_INFO_LEN 8 + struct hclge_dev *hdev = vport->back; + u8 resp_data[HCLGE_TQPS_RSS_INFO_LEN]; + + /* get the queue related info */ + memcpy(&resp_data[0], &vport->alloc_tqps, sizeof(u16)); + memcpy(&resp_data[2], &hdev->rss_size_max, sizeof(u16)); + memcpy(&resp_data[4], &hdev->num_desc, sizeof(u16)); + memcpy(&resp_data[6], &hdev->rx_buf_len, sizeof(u16)); + + return hclge_gen_resp_to_vf(vport, mbx_req, 0, resp_data, + HCLGE_TQPS_RSS_INFO_LEN); +} + +static int hclge_get_link_info(struct hclge_vport *vport, + struct hclge_mbx_vf_to_pf_cmd *mbx_req) +{ + struct hclge_dev *hdev = vport->back; + u16 link_status; + u16 dest_vfid; + u8 msg_data[2]; + + /* mac.link can only be 0 or 1 */ + link_status = (u16)hdev->hw.mac.link; + memcpy(&msg_data[0], &link_status, sizeof(u16)); + dest_vfid = cpu_to_le16(mbx_req->mbx_src_vfid); + + /* send this requested info to VF */ + return hclge_send_mbx_msg(vport, msg_data, sizeof(u16), + HCLGE_MBX_LINK_STAT_CHANGE, dest_vfid); +} + +void hclge_mbx_handler(struct hclge_dev *hdev) +{ + struct hclge_cmq_ring *crq = &hdev->hw.cmq.crq; + struct hclge_mbx_vf_to_pf_cmd *req; + struct hclge_vport *vport; + struct hclge_desc *desc; + int ret; + + /* handle all the mailbox requests in the queue */ + while (hnae_get_bit(crq->desc[crq->next_to_use].flag, + HCLGE_CMDQ_RX_OUTVLD_B)) { + desc = &crq->desc[crq->next_to_use]; + req = (struct hclge_mbx_vf_to_pf_cmd *)desc->data; + + vport = &hdev->vport[req->mbx_src_vfid]; + + switch (req->msg[0]) { + case HCLGE_MBX_SET_PROMISC_MODE: + ret = hclge_set_vf_promisc_mode(vport, req); + if (ret) + dev_err(&hdev->pdev->dev, + "PF fail(%d) to set VF promisc mode\n", + ret); + break; + case HCLGE_MBX_SET_UNICAST: + ret = hclge_set_vf_uc_mac_addr(vport, req, false); + if (ret) + dev_err(&hdev->pdev->dev, + "PF fail(%d) to set VF UC MAC Addr\n", + ret); + break; + case HCLGE_MBX_SET_MULTICAST: + ret = hclge_set_vf_mc_mac_addr(vport, req, false); + if (ret) + dev_err(&hdev->pdev->dev, + "PF fail(%d) to set VF MC MAC Addr\n", + ret); + break; + case HCLGE_MBX_SET_VLAN: + ret = hclge_set_vf_vlan_cfg(vport, req, false); + if (ret) + dev_err(&hdev->pdev->dev, + "PF failed(%d) to config VF's VLAN\n", + ret); + break; + case HCLGE_MBX_GET_QINFO: + ret = hclge_get_vf_queue_info(vport, req, true); + if (ret) + dev_err(&hdev->pdev->dev, + "PF failed(%d) to get Q info for VF\n", + ret); + break; + case HCLGE_MBX_GET_TCINFO: + ret = hclge_get_vf_tcinfo(vport, req, true); + if (ret) + dev_err(&hdev->pdev->dev, + "PF failed(%d) to get TC info for VF\n", + ret); + break; + case HCLGE_MBX_GET_LINK_STATUS: + ret = hclge_get_link_info(vport, req); + if (ret) + dev_err(&hdev->pdev->dev, + "PF fail(%d) to get link stat for VF\n", + ret); + break; + default: + dev_err(&hdev->pdev->dev, + "un-supported mailbox message, code = %d\n", + req->msg[0]); + break; + } + hclge_mbx_ring_ptr_move_crq(crq); + } + + /* Write back CMDQ_RQ header pointer, M7 need this pointer */ + hclge_write_dev(&hdev->hw, HCLGE_NIC_CRQ_HEAD_REG, crq->next_to_use); +}