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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 53399C47088 for ; Wed, 26 May 2021 10:15:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 37878613C1 for ; Wed, 26 May 2021 10:15:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233936AbhEZKQa (ORCPT ); Wed, 26 May 2021 06:16:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59718 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233907AbhEZKQP (ORCPT ); Wed, 26 May 2021 06:16:15 -0400 Received: from mail-pf1-x42e.google.com (mail-pf1-x42e.google.com [IPv6:2607:f8b0:4864:20::42e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C94E3C06175F; Wed, 26 May 2021 03:14:42 -0700 (PDT) Received: by mail-pf1-x42e.google.com with SMTP id d78so555209pfd.10; Wed, 26 May 2021 03:14:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=3JYP5XsOiLfJxNy8HHCt4jYw4Wi2NfvdBjfhoJ7nFYY=; b=gF00wtVRgT4wKdTpMTzkX9eKMPFJKt6UAuLCwNLqK+kMvboqskwlxyXjufrXnoV+NR /rETYCtVzNMFIlJzDczZhBFOf1h4RsUbkHZC2wZuCgdjb8LmuA4OeIfhALtnWorzZdxi onVb+h38YQNypQEkQUkby4qObS/SwyuaJVkvXHn5FymAd8LzfHK3U88nl0Z6UGuDoaRP dQKsQMxB0vfxWZ+E9Egf9DMtYgp/Z9ItXpDiiStbnWQkwB1BF04NliqaSZdojGi+8+/H FYTi3NbvAV/cI7Yg7Ydu5y5dNfckRg4lD2tcc1V2uNPD2hg2sbU+FgincXtWN7LkaEw5 lzMw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=3JYP5XsOiLfJxNy8HHCt4jYw4Wi2NfvdBjfhoJ7nFYY=; b=HI4z46/x8R2A8RHyPZ11wbNKaCCf3uCvjRYwDN0uT1Xa0dP3O3D/CXpBrpYewF6Bo3 iBluLBCy9ww1G5KZAoGTN0qtGZw7ejFMjs3rX871j4jUYDvMBiMn0YOcwRcORJTZjh2l A9qmVbsu03G3nZwDSh2QNpE7DV9BV1zP1u/55M+RuOZkkqz/9xhNdZ+rtkalR1B1JE3W kvHLDg1git9d/rId2Zt1AGDLVHFGEhsU95q1FAeva4aXrWtKi7NCUTSotWI/+wLUvfGb n78vG0lY9cLm7VY7YXkfj18DKxVwxDN/BR0WK0kg5t/64QzYW2kHyP7D+CEXYJICwp6X Byfg== X-Gm-Message-State: AOAM5327NKsRXOekH+1gpNaca9DNFWfUQFNAGoF93RT8Xh2uu6wQq7HN 8uUxxS+B0suWDF0QfHLwDnU= X-Google-Smtp-Source: ABdhPJzLZ28eGDOMgaRXJGtrPdKLj5xW9LxnSIF+PEECTIg5/LcxClIp4o+wc7El+j7hEfOXc2L7mQ== X-Received: by 2002:a05:6a00:139a:b029:2e3:db98:9ae3 with SMTP id t26-20020a056a00139ab02902e3db989ae3mr31485744pfg.81.1622024082404; Wed, 26 May 2021 03:14:42 -0700 (PDT) Received: from localhost.localdomain ([103.248.31.164]) by smtp.googlemail.com with ESMTPSA id c191sm15662614pfc.94.2021.05.26.03.14.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 26 May 2021 03:14:42 -0700 (PDT) From: Amey Narkhede To: Bjorn Helgaas Cc: alex.williamson@redhat.com, Raphael Norwitz , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, kw@linux.com, Shanker Donthineni , Sinan Kaya Subject: [PATCH v3 6/7] PCI: Enable NO_BUS_RESET quirk for Nvidia GPUs Date: Wed, 26 May 2021 15:44:02 +0530 Message-Id: <20210526101403.108721-7-ameynarkhede03@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210526101403.108721-1-ameynarkhede03@gmail.com> References: <20210526101403.108721-1-ameynarkhede03@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Shanker Donthineni On select platforms, some Nvidia GPU devices do not work with SBR. Triggering SBR would leave the device inoperable for the current system boot. It requires a system hard-reboot to get the GPU device back to normal operating condition post-SBR. For the affected devices, enable NO_BUS_RESET quirk to fix the issue. This issue will be fixed in the next generation of hardware. Signed-off-by: Shanker Donthineni Reviewed-by: Sinan Kaya --- drivers/pci/quirks.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 8f47d139c..ceec67342 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3558,6 +3558,18 @@ static void quirk_no_bus_reset(struct pci_dev *dev) dev->dev_flags |= PCI_DEV_FLAGS_NO_BUS_RESET; } +/* + * Some Nvidia GPU devices do not work with bus reset, SBR needs to be + * prevented for those affected devices. + */ +static void quirk_nvidia_no_bus_reset(struct pci_dev *dev) +{ + if ((dev->device & 0xffc0) == 0x2340) + quirk_no_bus_reset(dev); +} +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, + quirk_nvidia_no_bus_reset); + /* * Some Atheros AR9xxx and QCA988x chips do not behave after a bus reset. * The device will throw a Link Down error on AER-capable systems and -- 2.31.1