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 0536337E2E0; Wed, 22 Apr 2026 16:15:18 +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=1776874519; cv=none; b=DmXU9mH3GpGn5lLinsGNjkWEs0L/UR7VaHeY9hB9yRTChYym3BfBaiEb35+tk0AvasQMhQyND5jOpgE6Fzs1SgPBNNKNMG4/Oi7ZJOXLU4DxFy54Rqmj/ZCJ8PGbHeciuorx3Op3xqKc4bYMttSHSuytuyz8jcBHgxXpMp5y1MI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776874519; c=relaxed/simple; bh=dijWWutmL7JHzGDHtujgmiIt1pal0+qTFGDBt404M9U=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Mkd7pJxtcIncKE5Y6HGmqqfEwNZsLhwp1mkiN/rci+av0Zb6XrD/4E9ByFAgb2w26OqdiS9Hu20dacfxyorFwJWmLMDOif4+yCsHu9JFfYNAKRiyRvPnIP1eyEObCFqzMt2eYSU4YzC9bEVZik0l4wqGy7mfOrlU76dX1EyOAeA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=D5CcSfMH; 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="D5CcSfMH" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8C21CC19425; Wed, 22 Apr 2026 16:15:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776874518; bh=dijWWutmL7JHzGDHtujgmiIt1pal0+qTFGDBt404M9U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=D5CcSfMHYCKVSxhdvGoAFxTAB3raXTVVyvqAkhMcNEcUyBzMCPOuAML6zE5POqQjk +C6Oi6Rz9HMP4+964KHpXS8PSMEvo9qn/cxW75QNkJt/s2znl4b4lrZku29O42/AVD pk4GGDiqhjSo8CLN1kSxG3VSN72chC7cd7TmhL9g+KbIWBtScDUcXwsYDqwd74TtmO rHceuuE6GWaXMdYW+nirk6x4J1U4WArg0Nz1HYruqRTm89YPyFf74rtjMqEypkT6GP S9YG3MPy0eoObeOOneh+wS1gAJNNcvURBBHBTxY0GIyRyMDG4iaPMJNu0v8iFLfPVV S9Xr8i1MxTAyw== 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 v6 19/24] PCI: Add macros for legacy I/O and memory address space sizes Date: Wed, 22 Apr 2026 16:14:02 +0000 Message-ID: <20260422161407.118748-20-kwilczynski@kernel.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260422161407.118748-1-kwilczynski@kernel.org> References: <20260422161407.118748-1-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 defines for the standard PCI legacy address space sizes, replacing the raw literals used by the legacy sysfs attributes. Then, replace open-coded values with the newly added macros. No functional changes intended. Suggested-by: Ilpo Järvinen Signed-off-by: Krzysztof Wilczyński --- drivers/pci/pci-sysfs.c | 4 ++-- include/linux/pci.h | 5 +++++ 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index 3a7bbb00ca60..ad8ee192c94b 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -1055,7 +1055,7 @@ void pci_create_legacy_files(struct pci_bus *b) sysfs_bin_attr_init(b->legacy_io); b->legacy_io->attr.name = "legacy_io"; - b->legacy_io->size = 0xffff; + b->legacy_io->size = PCI_LEGACY_IO_SIZE; b->legacy_io->attr.mode = 0600; b->legacy_io->read = pci_read_legacy_io; b->legacy_io->write = pci_write_legacy_io; @@ -1072,7 +1072,7 @@ void pci_create_legacy_files(struct pci_bus *b) b->legacy_mem = b->legacy_io + 1; sysfs_bin_attr_init(b->legacy_mem); b->legacy_mem->attr.name = "legacy_mem"; - b->legacy_mem->size = 1024*1024; + b->legacy_mem->size = PCI_LEGACY_MEM_SIZE; b->legacy_mem->attr.mode = 0600; b->legacy_mem->mmap = pci_mmap_legacy_mem; /* See pci_create_attr() for motivation */ diff --git a/include/linux/pci.h b/include/linux/pci.h index f6f55005f82d..6b630bac8c08 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -27,6 +27,7 @@ #include #include +#include #include #include #include @@ -1167,6 +1168,10 @@ enum { /* These external functions are only available when PCI support is enabled */ #ifdef CONFIG_PCI +/* PCI legacy I/O port and memory address space sizes. */ +#define PCI_LEGACY_IO_SIZE (SZ_64K - 1) +#define PCI_LEGACY_MEM_SIZE SZ_1M + extern unsigned int pci_flags; static inline void pci_set_flags(int flags) { pci_flags = flags; } -- 2.54.0