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GET /api/1.2/patches/2222326/?format=api
{ "id": 2222326, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2222326/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260411080148.471335-7-kwilczynski@kernel.org/", "project": { "id": 28, "url": "http://patchwork.ozlabs.org/api/1.2/projects/28/?format=api", "name": "Linux PCI development", "link_name": "linux-pci", "list_id": "linux-pci.vger.kernel.org", "list_email": "linux-pci@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260411080148.471335-7-kwilczynski@kernel.org>", "list_archive_url": null, "date": "2026-04-11T08:01:30", "name": "[v4,06/24] PCI/sysfs: Add static PCI resource attribute macros", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "e58bac87ab0428c857721b0e251d09860ce8bd87", "submitter": { "id": 86709, "url": "http://patchwork.ozlabs.org/api/1.2/people/86709/?format=api", "name": "Krzysztof Wilczyński", "email": "kwilczynski@kernel.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260411080148.471335-7-kwilczynski@kernel.org/mbox/", "series": [ { "id": 499539, "url": "http://patchwork.ozlabs.org/api/1.2/series/499539/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/list/?series=499539", "date": "2026-04-11T08:01:24", "name": "PCI: Convert all dynamic sysfs attributes to static", "version": 4, "mbox": "http://patchwork.ozlabs.org/series/499539/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2222326/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2222326/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-pci+bounces-52374-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-pci@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=S2e1GHoc;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c04:e001:36c::12fc:5321; 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a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1775894535; cv=none;\n b=KyhHI66wBQhy/Rqr54WSuI7W1qSMk40jNCBX0MqV0P+3f+Nqk/arCnwskviOoh2d5Fky27kkHtdoa4PnrtZAsbMmrRA1Te9eHEU1Vt0jF0znBoOkDF8ZNQAb2vzXcbKf1I255H6Wl9j5gRsiWs55/frscjHfJ6cOzR+loBSK6u0=", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1775894535; c=relaxed/simple;\n\tbh=SF6NaKKGKml3gXGCmX67t4OHxTO6Wu63qGLXCgaq56I=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version:Content-Type;\n b=t3pgIPDaUfRlL2yxyiI4jhGPgz4O6VJNxAZlTFOf/8pnJFNPbPRG7wJTbo3piNvJTg5yoL1AtYRjTbnMFlq5Rzr0IksJ9W1CAQR7KO1g5LKDYcuc43wKFJEi6IWLuzf2cAhNuctiObAeDDZ+gpORXNiKJEEbei+c1WLH1ob+gdo=", "ARC-Authentication-Results": "i=1; smtp.subspace.kernel.org;\n dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=S2e1GHoc; arc=none smtp.client-ip=10.30.226.201", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1775894534;\n\tbh=SF6NaKKGKml3gXGCmX67t4OHxTO6Wu63qGLXCgaq56I=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=S2e1GHocFVBu82bQmSDTnd9TJkJZZw86sPm71UzBO41ZJ3MIg25sYmK5shvNcmGDE\n\t VM8vw8ubGLCURt3ntRM7Iw3nWG96efYVMgrJzcGj/tqSjrij0ZoVq1Dx0yViJPvQ7v\n\t MALWft17Kxw01mYkYQuqAE23FDT61+EEb7105Bgem8xad6aUNurkcafXqIZvmo2zz1\n\t KQOOLd13BO6BdZfn9/pJ1YNOlyO1M3ntW7HH53qNp9oa0SJHGMtexWekyA1cqpxeZ2\n\t qAmzF6cBAyd3gPUumHr/eLnz7ZQ42ZW/0HiLr3GFKfmNoE7+ROD5vJ4e8BhLkchjXX\n\t OGYwFmoYfLbpA==", "From": "=?utf-8?q?Krzysztof_Wilczy=C5=84ski?= <kwilczynski@kernel.org>", "To": "Bjorn Helgaas <bhelgaas@google.com>", "Cc": "Bjorn Helgaas <helgaas@kernel.org>,\n Manivannan Sadhasivam <mani@kernel.org>,\n Lorenzo Pieralisi <lpieralisi@kernel.org>,\n Magnus Lindholm <linmag7@gmail.com>, Matt Turner <mattst88@gmail.com>,\n Richard Henderson <richard.henderson@linaro.org>,\n Christophe Leroy <chleroy@kernel.org>,\n Madhavan Srinivasan <maddy@linux.ibm.com>,\n Michael Ellerman <mpe@ellerman.id.au>, Nicholas Piggin <npiggin@gmail.com>,\n Dexuan Cui <decui@microsoft.com>,\n =?utf-8?q?Krzysztof_Ha=C5=82asa?= <khalasa@piap.pl>,\n Lukas Wunner <lukas@wunner.de>, \"Oliver O'Halloran\" <oohall@gmail.com>,\n Saurabh Singh Sengar <ssengar@microsoft.com>,\n Shuan He <heshuan@bytedance.com>, Srivatsa Bhat <srivatsabhat@microsoft.com>,\n\t=?utf-8?q?Ilpo_J=C3=A4rvinen?= <ilpo.jarvinen@linux.intel.com>,\n linux-pci@vger.kernel.org, linux-alpha@vger.kernel.org,\n linuxppc-dev@lists.ozlabs.org", "Subject": "[PATCH v4 06/24] PCI/sysfs: Add static PCI resource attribute macros", "Date": "Sat, 11 Apr 2026 08:01:30 +0000", "Message-ID": "<20260411080148.471335-7-kwilczynski@kernel.org>", "X-Mailer": "git-send-email 2.53.0", "In-Reply-To": "<20260411080148.471335-1-kwilczynski@kernel.org>", "References": "<20260411080148.471335-1-kwilczynski@kernel.org>", "Precedence": "bulk", "X-Mailing-List": "linux-pci@vger.kernel.org", "List-Id": "<linux-pci.vger.kernel.org>", "List-Subscribe": "<mailto:linux-pci+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-pci+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=UTF-8", "Content-Transfer-Encoding": "8bit" }, "content": "Add three macros for declaring static binary attributes for PCI\nresource files:\n\n - pci_dev_resource_io_attr(), for I/O BAR resources (read/write)\n - pci_dev_resource_uc_attr(), for memory BAR resources (mmap uncached)\n - pci_dev_resource_wc_attr(), for write-combine resources (mmap WC)\n\nEach macro only sets the callbacks its resource type needs. The I/O\nmacro conditionally includes mmap support via __PCI_RESOURCE_IO_MMAP_ATTRS\non architectures where arch_can_pci_mmap_io() is true at compile time\n(such as PowerPC, SPARC, and Xtensa).\n\nSigned-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>\n---\n drivers/pci/pci-sysfs.c | 41 +++++++++++++++++++++++++++++++++++++++++\n 1 file changed, 41 insertions(+)", "diff": "diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c\nindex 4f95b336cc34..ca0074674acc 100644\n--- a/drivers/pci/pci-sysfs.c\n+++ b/drivers/pci/pci-sysfs.c\n@@ -1220,6 +1220,47 @@ static ssize_t pci_write_resource_io(struct file *filp, struct kobject *kobj,\n \treturn pci_resource_io(filp, kobj, attr, buf, off, count, true);\n }\n \n+/*\n+ * generic_file_llseek() consults f_mapping->host to determine\n+ * the file size. As iomem_inode knows nothing about the\n+ * attribute, it's not going to work, so override it as well.\n+ */\n+#if arch_can_pci_mmap_io()\n+# define __PCI_RESOURCE_IO_MMAP_ATTRS\t\t\\\n+\t.f_mapping = iomem_get_mapping,\t\t\\\n+\t.llseek = pci_llseek_resource,\t\t\\\n+\t.mmap = pci_mmap_resource_uc,\n+#else\n+# define __PCI_RESOURCE_IO_MMAP_ATTRS\n+#endif\n+\n+#define pci_dev_resource_io_attr(_bar)\t\t\t\t\t\\\n+static const struct bin_attribute dev_resource##_bar##_io_attr = {\t\\\n+\t.attr = { .name = \"resource\" __stringify(_bar), .mode = 0600 },\t\\\n+\t.private = (void *)(unsigned long)(_bar),\t\t\t\\\n+\t.read = pci_read_resource,\t\t\t\t\t\\\n+\t.write = pci_write_resource,\t\t\t\t\t\\\n+\t__PCI_RESOURCE_IO_MMAP_ATTRS\t\t\t\t\t\\\n+}\n+\n+#define pci_dev_resource_uc_attr(_bar)\t\t\t\t\t\\\n+static const struct bin_attribute dev_resource##_bar##_uc_attr = {\t\\\n+\t.attr = { .name = \"resource\" __stringify(_bar), .mode = 0600 },\t\\\n+\t.private = (void *)(unsigned long)(_bar),\t\t\t\\\n+\t.f_mapping = iomem_get_mapping,\t\t\t\t\t\\\n+\t.llseek = pci_llseek_resource,\t\t\t\t\t\\\n+\t.mmap = pci_mmap_resource_uc,\t\t\t\t\t\\\n+}\n+\n+#define pci_dev_resource_wc_attr(_bar)\t\t\t\t\t\t\\\n+static const struct bin_attribute dev_resource##_bar##_wc_attr = {\t\t\\\n+\t.attr = { .name = \"resource\" __stringify(_bar) \"_wc\", .mode = 0600 },\t\\\n+\t.private = (void *)(unsigned long)(_bar),\t\t\t\t\\\n+\t.f_mapping = iomem_get_mapping,\t\t\t\t\t\t\\\n+\t.llseek = pci_llseek_resource,\t\t\t\t\t\t\\\n+\t.mmap = pci_mmap_resource_wc,\t\t\t\t\t\t\\\n+}\n+\n /**\n * pci_remove_resource_files - cleanup resource files\n * @pdev: dev to cleanup\n", "prefixes": [ "v4", "06/24" ] }