From patchwork Wed May 26 10:13:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: ameynarkhede03 X-Patchwork-Id: 12281191 X-Patchwork-Delegate: bhelgaas@google.com 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=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 C86F3C2B9F7 for ; Wed, 26 May 2021 10:14:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A50CA613C1 for ; Wed, 26 May 2021 10:14:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233873AbhEZKQK (ORCPT ); Wed, 26 May 2021 06:16:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59662 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233889AbhEZKQE (ORCPT ); Wed, 26 May 2021 06:16:04 -0400 Received: from mail-pj1-x1031.google.com (mail-pj1-x1031.google.com [IPv6:2607:f8b0:4864:20::1031]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E92C8C061760; Wed, 26 May 2021 03:14:32 -0700 (PDT) Received: by mail-pj1-x1031.google.com with SMTP id ep16-20020a17090ae650b029015d00f578a8so74222pjb.2; Wed, 26 May 2021 03:14:32 -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=akBlPiWHD54eFlP2beyMx41zh4qBgkL9tchdaD+JxHE=; b=FGGtZdfk5Hc55zzmeKZ+zQJs8tCYad8Cryn8x+hm0SksUrGkYws8cOyA8B+91+TkMR Ett3KM3qGkoZNAI35tzFNu5b3DjMFP9DYsXOKsBdnfeB98JnAUyDq5V7qy22tEWAkK9G SWcA+4AmFfWywacCPCVqOfGTEjIOCaowHxILbYwNkfGcgrWT8wF9vT9/ZbATBm5bLE7B Cud7pZAZgBODG4kQ8BMFTr/6A1N62jYv1yght/ljD9gE59+POMy7CCL/WelBOqFFZ5Hr Akos4ZFQQ8lsoelJOcXKW/LeuyNqT36K7fNVTRz3XusYEBsnpLry2XfGUeGii1IdzXYm z3sQ== 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=akBlPiWHD54eFlP2beyMx41zh4qBgkL9tchdaD+JxHE=; b=mkoim05Fwy+forbSg+f75yTmLRllunbnHlH0D1Nv3d7pUlQEDprVFmpUS3VTKRHkLB kfAH9a0TpPrsMUTO0InKoq/HJIP9BV5pJfdvNIRRCtoccAn801BRJxAbzmiF7PhUTNer fn7t1TeWHeZt+YvKwG3FMOPtATmr3ZbPPYZl0LAzIMtTP95MB+5w2/8g+Q2iNXb4r2b3 PullAFQSFWkmOv0lmBOXHGGf9KfpYHAiizqonvwt7voLlC6Eblt9z3eP1K3KXhBuq3pn ybThlnR+bV57YuNGPTzLvrfMI3Zbrd/1Xjy1+FQInV7TGGLUExrLFtlZGtIgO31ygywk +PcA== X-Gm-Message-State: AOAM532joy1VvXCD4JHCA2Vy3mINPKBbJHOcaUi6LE14dOjObnuIPu+n cOi+b2adoMhhSWSAe6X0lvc= X-Google-Smtp-Source: ABdhPJydpqlIaN6kMkQSyHGdMj2wLYImAPKGYTaGcUjzAflEt+tWyyLXZ0fiAdYyp9AflHoxBCczrg== X-Received: by 2002:a17:902:9b8b:b029:ee:bb74:7d46 with SMTP id y11-20020a1709029b8bb02900eebb747d46mr35035140plp.65.1622024072573; Wed, 26 May 2021 03:14:32 -0700 (PDT) Received: from localhost.localdomain ([103.248.31.164]) by smtp.googlemail.com with ESMTPSA id c191sm15662614pfc.94.2021.05.26.03.14.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 26 May 2021 03:14:32 -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 , Amey Narkhede Subject: [PATCH v3 3/7] PCI: Remove reset_fn field from pci_dev Date: Wed, 26 May 2021 15:43:59 +0530 Message-Id: <20210526101403.108721-4-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 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org reset_fn field is used to indicate whether the device supports any reset mechanism or not. Deprecate use of reset_fn in favor of new reset_methods array which can be used to keep track of all supported reset mechanisms of a device and their ordering. The octeon driver is incorrectly using reset_fn field to detect if the device supports FLR or not. Use pcie_reset_flr to probe whether it supports FLR or not. Reviewed-by: Alex Williamson Reviewed-by: Raphael Norwitz Co-developed-by: Alex Williamson Signed-off-by: Alex Williamson Signed-off-by: Amey Narkhede --- drivers/net/ethernet/cavium/liquidio/lio_vf_main.c | 2 +- drivers/pci/pci-sysfs.c | 6 ++---- drivers/pci/pci.c | 6 +++--- drivers/pci/probe.c | 1 - drivers/pci/quirks.c | 2 +- include/linux/pci.h | 1 - 6 files changed, 7 insertions(+), 11 deletions(-) diff --git a/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c b/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c index 516f166ce..336d149ee 100644 --- a/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c +++ b/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c @@ -526,7 +526,7 @@ static void octeon_destroy_resources(struct octeon_device *oct) oct->irq_name_storage = NULL; } /* Soft reset the octeon device before exiting */ - if (oct->pci_dev->reset_fn) + if (!pcie_reset_flr(oct->pci_dev, 1)) octeon_pci_flr(oct); else cn23xx_vf_ask_pf_to_do_flr(oct); diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index f8afd54ca..388895099 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -1334,7 +1334,7 @@ static int pci_create_capabilities_sysfs(struct pci_dev *dev) pcie_vpd_create_sysfs_dev_files(dev); - if (dev->reset_fn) { + if (pci_reset_supported(dev)) { retval = device_create_file(&dev->dev, &dev_attr_reset); if (retval) goto error; @@ -1417,10 +1417,8 @@ int __must_check pci_create_sysfs_dev_files(struct pci_dev *pdev) static void pci_remove_capabilities_sysfs(struct pci_dev *dev) { pcie_vpd_remove_sysfs_dev_files(dev); - if (dev->reset_fn) { + if (pci_reset_supported(dev)) device_remove_file(&dev->dev, &dev_attr_reset); - dev->reset_fn = 0; - } } /** diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index cbdb5bd0d..fad209c5f 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -5192,7 +5192,7 @@ int pci_reset_function(struct pci_dev *dev) { int rc; - if (!dev->reset_fn) + if (!pci_reset_supported(dev)) return -ENOTTY; pci_dev_lock(dev); @@ -5228,7 +5228,7 @@ int pci_reset_function_locked(struct pci_dev *dev) { int rc; - if (!dev->reset_fn) + if (!pci_reset_supported(dev)) return -ENOTTY; pci_dev_save_and_disable(dev); @@ -5251,7 +5251,7 @@ int pci_try_reset_function(struct pci_dev *dev) { int rc; - if (!dev->reset_fn) + if (!pci_reset_supported(dev)) return -ENOTTY; if (!pci_dev_trylock(dev)) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index c5cfdd239..4764e031a 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -2404,7 +2404,6 @@ static void pci_init_capabilities(struct pci_dev *dev) pcie_report_downtraining(dev); pci_init_reset_methods(dev); - dev->reset_fn = pci_reset_supported(dev); } /* diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 5318833f3..8f47d139c 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -5535,7 +5535,7 @@ static void quirk_reset_lenovo_thinkpad_p50_nvgpu(struct pci_dev *pdev) if (pdev->subsystem_vendor != PCI_VENDOR_ID_LENOVO || pdev->subsystem_device != 0x222e || - !pdev->reset_fn) + !pci_reset_supported(pdev)) return; if (pci_enable_device_mem(pdev)) diff --git a/include/linux/pci.h b/include/linux/pci.h index 738c0cadb..e9603d638 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -429,7 +429,6 @@ struct pci_dev { unsigned int state_saved:1; unsigned int is_physfn:1; unsigned int is_virtfn:1; - unsigned int reset_fn:1; unsigned int is_hotplug_bridge:1; unsigned int shpc_managed:1; /* SHPC owned by shpchp */ unsigned int is_thunderbolt:1; /* Thunderbolt controller */