From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E09B818FDBD; Fri, 19 Jun 2026 08:52:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781859133; cv=none; b=F+Hcs+Fqlt+XxN0peXpjDNxjVkl4GL3nY1ScMC0GDW6jBWPtU4XaeGtHR0VIJKxbbGYz01iw6H0PFM2Lfq1DhKMBvn8nbGBxQIfs9KbThoOmEIwxqr2gjf9Ix+hdE9sAjHVdq2TzWKdY1qSA78IEIHYgB8tVfc7pf0X+6kvOsIM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781859133; c=relaxed/simple; bh=h+kJQeLZVqnSeeiwM2bc1dXa4IpY6mXgTH7Yn+fO0vY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=FUJ/qYGggQAXe2bngU5dAzLjAN99Z3eom5B0G24wqgUT3rcWTL39au5gobQD01L3Z5S99I4ME3XM2y6nP57G6eQUcR3Ai060TiACkDruwtSIjdHpMR4cz0DjD/pb4lywK/T23ATAcznqgNVmounONdVJ/IN9Kcq5QnMpM03v/oA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=IxblK0TO; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="IxblK0TO" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 482A41F00A3D; Fri, 19 Jun 2026 08:52:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1781859132; bh=J0zsLA5ryToNAxAxjQD54oSfvFP26rqE2yjtK6eduNM=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=IxblK0TOn4bdXlw02y2LSJlKBmz55vqoszPIyo2wScT9SEaCVMALNErCNIHU/x8cW 5QDql3kwgR6b5J3c5PGbOKl7izAejKIySikHILgUg8fKsWay4B2ob57K5VqS5IHjmE /5sAAvWBib8AKzAbp7cFItA3AN4tK0n4VIVpo+mFSuHjnFcd84rEZ/eQe1+i4GBCZp TlCIPhhqE6AEhOMb7IKPq8yBVRPr4jVrmomdy2A2bUOkCXUhlgV3EqHWGDXfxx9BgW jOW8ci+SaDl3HCxnSZKrA67oQPWPD71n1gSyDE1w61LXNpoL/yv7xgxSztTT6FwQOF cNIzqHMrBRPEw== From: =?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= To: Bjorn Helgaas Cc: Bjorn Helgaas , Manivannan Sadhasivam , Lorenzo Pieralisi , Alex Williamson , Magnus Lindholm , Matt Turner , Richard Henderson , Christophe Leroy , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Dexuan Cui , =?UTF-8?q?Krzysztof=20Ha=C5=82asa?= , Lukas Wunner , "Oliver O'Halloran" , Saurabh Singh Sengar , Shuan He , Srivatsa Bhat , =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , linux-pci@vger.kernel.org, linux-alpha@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: [PATCH v8 02/25] PCI: Add pci_resource_is_io() and pci_resource_is_mem() helpers Date: Fri, 19 Jun 2026 08:51:37 +0000 Message-ID: <20260619085200.3729431-3-kwilczynski@kernel.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260619085200.3729431-1-kwilczynski@kernel.org> References: <20260619085200.3729431-1-kwilczynski@kernel.org> Precedence: bulk X-Mailing-List: linux-alpha@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add helpers to check whether a PCI resource is of I/O port or memory type. These replace the open-coded pci_resource_flags() with IORESOURCE_IO and IORESOURCE_MEM pattern used across the tree. Suggested-by: Ilpo Järvinen Tested-by: Shivaprasad G Bhat Reviewed-by: Ilpo Järvinen Signed-off-by: Krzysztof Wilczyński --- include/linux/pci.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/include/linux/pci.h b/include/linux/pci.h index 2c4454583c11..e93fbe6b57fe 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -2300,6 +2300,31 @@ int pci_iobar_pfn(struct pci_dev *pdev, int bar, struct vm_area_struct *vma); CONCATENATE(__pci_dev_for_each_res, COUNT_ARGS(__VA_ARGS__)) \ (dev, res, __VA_ARGS__) +/** + * pci_resource_is_io - check if a PCI resource is of I/O port type. + * @dev: PCI device to check. + * @resno: The resource number (BAR index) to check. + * + * Returns true if the resource type is I/O port. + */ +static inline bool pci_resource_is_io(const struct pci_dev *dev, int resno) +{ + return resource_type(pci_resource_n(dev, resno)) == IORESOURCE_IO; +} + +/** + * pci_resource_is_mem - check if a PCI resource is of memory type. + * @dev: PCI device to check. + * @resno: The resource number (BAR index) to check. + * + * Returns true if the resource type is memory, including + * prefetchable memory. + */ +static inline bool pci_resource_is_mem(const struct pci_dev *dev, int resno) +{ + return resource_type(pci_resource_n(dev, resno)) == IORESOURCE_MEM; +} + /* * Similar to the helpers above, these manipulate per-pci_dev * driver-specific data. They are really just a wrapper around -- 2.54.0