From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 CF8952459E5; Sat, 11 Apr 2026 08:02:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775894520; cv=none; b=jnmRZk/l47I5Vu+LoJFiykxq9onRJwZGNMDlj9JgPpmyh72vfYD1p9rgM135OtzrMlQ3uZhxjuLNnyR2lx7n4kEB63DkhLAOgZEyLVlKjBTrlIpiKXHTiuGesA5U4BjJvIM7R+H8LsLsS4vRrtJuuQs45LRsMwvIqet2ztikgwA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775894520; c=relaxed/simple; bh=M4LBexol3vWd4MZjwunSYPnTSRksW2HSkNMaScnPtII=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=AIhuHO/F8gBeHBp0AAvhBqPLzJU0LU5aX3e/MmTFNaYI6nzT9Dsh3je+A35d9LrqPQ47txR0M3MRRgSjafYk5jpfsEOTay1yPxSJXfocrPN3y0tr6NHgDcn2FPlVTlAChXYW2S5bdWJQ3d5/9DVf8I74Kap63t0EYA2ZcQPaftg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=qDyenqYh; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="qDyenqYh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 62FA0C4CEF7; Sat, 11 Apr 2026 08:01:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1775894520; bh=M4LBexol3vWd4MZjwunSYPnTSRksW2HSkNMaScnPtII=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qDyenqYhmb3sg1Sk7rCtOdP+KJ/KomcwfTCFj0l3eBTWiUDAWAOTOZysGSOcziUmP Vwabmjnksn5WcPK9TAY8dWQd9eAITjKdJUxRzZWOzOZXK6+rXUlWZ4IWi4P7VrWmxF vFSXUm6V4VMdSv4iosNzSZ2dF1zOK3/cnJSBGNgIAuC4mdq8cX8BZx3v0rv6GxuHUu EXbSO7+DTCb2AEFz4Is1ibAjjYm2J8Io+7J+wjHqXsJmBuQcAP4XNLRGwyH9e/4BZi UK+mjsbcp7nkmJUIOPs/i0zNyZRELYN7jGlca5yJjEJ9EYIO+U2XaBI8QS4zKrUsvE RVYB7jxYZ2hYQ== From: =?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= To: Bjorn Helgaas Cc: Bjorn Helgaas , Manivannan Sadhasivam , Lorenzo Pieralisi , 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 v4 02/24] PCI: Add pci_resource_is_io() and pci_resource_is_mem() helpers Date: Sat, 11 Apr 2026 08:01:26 +0000 Message-ID: <20260411080148.471335-3-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: 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 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 1c270f1d5123..05aceb7f1f37 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -2295,6 +2295,31 @@ 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 -- 2.53.0