From patchwork Wed Aug 25 21:22:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= X-Patchwork-Id: 1520915 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4GvzTy4zjNz9sWS for ; Thu, 26 Aug 2021 07:23:02 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231448AbhHYVXq (ORCPT ); Wed, 25 Aug 2021 17:23:46 -0400 Received: from mail-wm1-f47.google.com ([209.85.128.47]:53152 "EHLO mail-wm1-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230512AbhHYVXq (ORCPT ); Wed, 25 Aug 2021 17:23:46 -0400 Received: by mail-wm1-f47.google.com with SMTP id f10so453236wml.2 for ; Wed, 25 Aug 2021 14:23:00 -0700 (PDT) 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=Zf6rkWUjaV1Tx6F+wfWGn1LuKnP4vz9zUcrgqSHDegA=; b=Zr2+VJb5mb6AVUa3XqU32+GZNhnaQmmaBtjVg6A5ZZZwo/W5dm0DjVOkL2CrU7vxK5 z7lLaxdg1D0sankXdy9itbgxAC/q4FF1dOea0l1F0jEFTX53osCFvMRMl7kyfv2jjbi+ 9puvjWVPqA6J7m36Dk/++EJQPUTxvwW/Zf9N5JZxWkGYWdsaZJdIp1UNFr8gaByGfVPZ TGdl9sweCE1a8cv1Zb6gUv4Fiu+YgbEFLwOgx+o+iNDEtfxUhI59oFyX5BHtH3dokZFw HXE6h5Rpmts/qp7Jsw4iv6JFSe0PmhnvCZImzwg9lIrb6Qqbg9gkNY1MPKTwEB6TLNEy H3fQ== X-Gm-Message-State: AOAM531OGWIOAbx2F4bNf9XY0FqGhpSc2rNQnyWAi+kLlHJECDNKLz8C 4hGVNxACnm/rEUKWizDDNbeoPHTcXOU= X-Google-Smtp-Source: ABdhPJwXoYV+D0edvzKjhf7OAUxbCeuEx1+CXOWzBjo5+z7py5grrnpCQUgdYgT6TRDY4i8gAUHooQ== X-Received: by 2002:a05:600c:22d3:: with SMTP id 19mr469551wmg.36.1629926579498; Wed, 25 Aug 2021 14:22:59 -0700 (PDT) Received: from workstation.lan ([95.155.85.46]) by smtp.gmail.com with ESMTPSA id d24sm663527wmb.35.2021.08.25.14.22.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 25 Aug 2021 14:22:59 -0700 (PDT) From: =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= To: Bjorn Helgaas Cc: linux-pci@vger.kernel.org Subject: [PATCH 2/4] PCI/sysfs: Add pci_dev_resource_attr() macro Date: Wed, 25 Aug 2021 21:22:53 +0000 Message-Id: <20210825212255.878043-3-kw@linux.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210825212255.878043-1-kw@linux.com> References: <20210825212255.878043-1-kw@linux.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The pci_dev_resource_attr() macro will be used to declare and define each of the PCI resource sysfs objects statically while also reducing unnecessary code repetition. Internally this macro relies on the pci_dev_resource_attr_is_visible() helper which should correctly handle different types of PCI BAR address space while also providing support for creating either normal and/or write-combine attributes as required. Signed-off-by: Krzysztof Wilczyński --- drivers/pci/pci-sysfs.c | 47 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index c94ab9830932..6eba5c0887df 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -1277,6 +1277,53 @@ static umode_t pci_dev_resource_attr_is_visible(struct kobject *kobj, return attr->attr.mode; } + +#define pci_dev_resource_attr(_bar) \ +static struct bin_attribute \ +pci_dev_resource##_bar##_attr = __BIN_ATTR(resource##_bar, \ + 0600, NULL, NULL, 0); \ + \ +static struct bin_attribute *pci_dev_resource##_bar##_attrs[] = { \ + &pci_dev_resource##_bar##_attr, \ + NULL, \ +}; \ + \ +static umode_t \ +pci_dev_resource##_bar##_attr_is_visible(struct kobject *kobj, \ + struct bin_attribute *a, \ + int n) \ +{ \ + return pci_dev_resource_attr_is_visible(kobj, a, _bar, false); \ +}; \ + \ +static const struct \ +attribute_group pci_dev_resource##_bar##_attr_group = { \ + .bin_attrs = pci_dev_resource##_bar##_attrs, \ + .is_bin_visible = pci_dev_resource##_bar##_attr_is_visible, \ +}; \ + \ +static struct bin_attribute \ +pci_dev_resource##_bar##_wc_attr = __BIN_ATTR(resource##_bar##_wc, \ + 0600, NULL, NULL, 0); \ + \ +static struct bin_attribute *pci_dev_resource##_bar##_wc_attrs[] = { \ + &pci_dev_resource##_bar##_wc_attr, \ + NULL, \ +}; \ + \ +static umode_t \ +pci_dev_resource##_bar##_wc_attr_is_visible(struct kobject *kobj, \ + struct bin_attribute *a, \ + int n) \ +{ \ + return pci_dev_resource_attr_is_visible(kobj, a, _bar, true); \ +}; \ + \ +static const struct \ +attribute_group pci_dev_resource##_bar##_wc_attr_group = { \ + .bin_attrs = pci_dev_resource##_bar##_wc_attrs, \ + .is_bin_visible = pci_dev_resource##_bar##_wc_attr_is_visible, \ +} #else /* !(defined(HAVE_PCI_MMAP) || defined(ARCH_GENERIC_PCI_MMAP_RESOURCE)) */ int __weak pci_create_resource_files(struct pci_dev *dev) { return 0; } void __weak pci_remove_resource_files(struct pci_dev *dev) { return; }