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=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,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 D866EC352A1 for ; Wed, 5 Feb 2020 15:55:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AA63E217BA for ; Wed, 5 Feb 2020 15:55:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="upPG+0IT" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727696AbgBEPzg (ORCPT ); Wed, 5 Feb 2020 10:55:36 -0500 Received: from mail-pj1-f65.google.com ([209.85.216.65]:50317 "EHLO mail-pj1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726661AbgBEPze (ORCPT ); Wed, 5 Feb 2020 10:55:34 -0500 Received: by mail-pj1-f65.google.com with SMTP id r67so1155049pjb.0 for ; Wed, 05 Feb 2020 07:55:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references :in-reply-to:references; bh=g1IIx60amrgjfE57qozlHgEQ8/enUuSyOSjIAvt32+w=; b=upPG+0ITd2XZHOIr73HlK9LZRj2czAjtnUxJ1HrzBL9cZCq/P/H2b4EmSq6iR2/6YH nA1nLitujYZ1IljDqRYJniwUyYAML9tF6fu9S+7vie3MuNCr0FtpactAAHl1vRy+anFi f91D/tkK8NBe33ZClBDXNXX/1MyxvB+ZvqNFbrRfmknWiEi84r2H4R7PRpN8uaCL/4Ah EpyBDoNLwePdwKq0LHNBE21qDn/GY7iF7PcPkyzGMIal2O8pDR1m8KD2p7oh/pKRowPO 86/Dl4UhotNZqw3jm/q+e3mAHO7zt3I5nDXVgqexQv8zdE1bDzFy/9o1QenrKNKkjygy nxRg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references:in-reply-to:references; bh=g1IIx60amrgjfE57qozlHgEQ8/enUuSyOSjIAvt32+w=; b=lftJJAHoL3pKAsMpl94/p1RL/RRp86jnJPjsDGA9LJ5uqFVBE7ANsF5Hgw8jba9x0I 7SIZX/x1bQ657rcbWlLl9NmfSBMJ/qB48WAmRi6YWC18brAvrJ8hgugqA6d/lyaa5XHr XwZQaqEror4qS+yzF9rQ3A9krEomhAfjksIzYgHV9znbndUCaH4wL1YlqAIQ448zIjaQ YIT5Wxz7JKAY6a7DERZMordO+1J1ZosXzd14XeVngl8RIwq+NaeSHlKHkXcFzGVA3HBe cBuqvii23NKX0Ouc3JD2w8cyW+R0zK2Y2qow2eJ6z/fAwY44JK9Src+v6x8sa6zu82F4 khgw== X-Gm-Message-State: APjAAAXPPDSQezYkJfC9oEgYuqztK5fvFt1bNv1HqlXI6v8xf1baC42n AxIn0jj86/C6MTYB5MLAL0w= X-Google-Smtp-Source: APXvYqzYNMNDJuaQ21iEMdiY++REnS7abORLIZMqrNaTbe+qDiaC8RcLrDnyCUo6QBzM28V2/UiETg== X-Received: by 2002:a17:90a:d804:: with SMTP id a4mr6272089pjv.11.1580918133166; Wed, 05 Feb 2020 07:55:33 -0800 (PST) Received: from emb-wallaby.amd.com ([165.204.156.251]) by smtp.gmail.com with ESMTPSA id z10sm195678pgz.88.2020.02.05.07.55.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 05 Feb 2020 07:55:32 -0800 (PST) From: Arindam Nath To: Shyam Sundar S K , Jon Mason , Dave Jiang , Allen Hubbe , Jiasen Lin , Sanjay R Mehta Cc: linux-ntb@googlegroups.com, linux-kernel@vger.kernel.org, Arindam Nath Subject: [PATCH 15/15] NTB: add pci shutdown handler for AMD NTB Date: Wed, 5 Feb 2020 21:24:32 +0530 Message-Id: <6c943711a14cd79bd6f3b392787f09da2cfb3711.1580914232.git.arindam.nath@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The PCI shutdown handler is invoked in response to system reboot or shutdown. A data transfer might still be in flight when this happens. So the very first action we take here is to send a link down notification, so that any pending data transfer is terminated. Rest of the actions are same as that of PCI remove handler. Signed-off-by: Arindam Nath --- drivers/ntb/hw/amd/ntb_hw_amd.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/ntb/hw/amd/ntb_hw_amd.c b/drivers/ntb/hw/amd/ntb_hw_amd.c index c6cea0005553..9e310e1ad4d0 100644 --- a/drivers/ntb/hw/amd/ntb_hw_amd.c +++ b/drivers/ntb/hw/amd/ntb_hw_amd.c @@ -1296,6 +1296,22 @@ static void amd_ntb_pci_remove(struct pci_dev *pdev) kfree(ndev); } +static void amd_ntb_pci_shutdown(struct pci_dev *pdev) +{ + struct amd_ntb_dev *ndev = pci_get_drvdata(pdev); + + /* Send link down notification */ + ntb_link_event(&ndev->ntb); + + amd_deinit_side_info(ndev); + ntb_peer_db_set(&ndev->ntb, BIT_ULL(ndev->db_last_bit)); + ntb_unregister_device(&ndev->ntb); + ndev_deinit_debugfs(ndev); + amd_deinit_dev(ndev); + amd_ntb_deinit_pci(ndev); + kfree(ndev); +} + static const struct file_operations amd_ntb_debugfs_info = { .owner = THIS_MODULE, .open = simple_open, @@ -1326,6 +1342,7 @@ static struct pci_driver amd_ntb_pci_driver = { .id_table = amd_ntb_pci_tbl, .probe = amd_ntb_pci_probe, .remove = amd_ntb_pci_remove, + .shutdown = amd_ntb_pci_shutdown, }; static int __init amd_ntb_pci_driver_init(void) -- 2.17.1