{"id":2226587,"url":"http://patchwork.ozlabs.org/api/patches/2226587/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260422161407.118748-20-kwilczynski@kernel.org/","project":{"id":2,"url":"http://patchwork.ozlabs.org/api/projects/2/?format=json","name":"Linux PPC development","link_name":"linuxppc-dev","list_id":"linuxppc-dev.lists.ozlabs.org","list_email":"linuxppc-dev@lists.ozlabs.org","web_url":"https://github.com/linuxppc/wiki/wiki","scm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git","webscm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/","list_archive_url":"https://lore.kernel.org/linuxppc-dev/","list_archive_url_format":"https://lore.kernel.org/linuxppc-dev/{}/","commit_url_format":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}"},"msgid":"<20260422161407.118748-20-kwilczynski@kernel.org>","list_archive_url":"https://lore.kernel.org/linuxppc-dev/20260422161407.118748-20-kwilczynski@kernel.org/","date":"2026-04-22T16:14:02","name":"[v6,19/24] PCI: Add macros for legacy I/O and memory address space sizes","commit_ref":null,"pull_url":null,"state":"handled-elsewhere","archived":false,"hash":"91539e604feebb67e91d99f7a9add8a52f4fe953","submitter":{"id":86709,"url":"http://patchwork.ozlabs.org/api/people/86709/?format=json","name":"Krzysztof Wilczyński","email":"kwilczynski@kernel.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260422161407.118748-20-kwilczynski@kernel.org/mbox/","series":[{"id":501040,"url":"http://patchwork.ozlabs.org/api/series/501040/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=501040","date":"2026-04-22T16:13:43","name":"[v6,01/24] PCI/sysfs: Use PCI resource accessor macros","version":6,"mbox":"http://patchwork.ozlabs.org/series/501040/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2226587/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2226587/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linuxppc-dev@lists.ozlabs.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=D5CcSfMH;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=2404:9400:21b9:f100::1; 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lists.ozlabs.org;\n dmarc=pass (p=quarantine dis=none) header.from=kernel.org;\n dkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=D5CcSfMH; dkim-atps=neutral;\n spf=pass (client-ip=172.105.4.254; helo=tor.source.kernel.org;\n envelope-from=kwilczynski@kernel.org;\n receiver=lists.ozlabs.org) smtp.mailfrom=kernel.org","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1776874518;\n\tbh=dijWWutmL7JHzGDHtujgmiIt1pal0+qTFGDBt404M9U=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=D5CcSfMHYCKVSxhdvGoAFxTAB3raXTVVyvqAkhMcNEcUyBzMCPOuAML6zE5POqQjk\n\t +C6Oi6Rz9HMP4+964KHpXS8PSMEvo9qn/cxW75QNkJt/s2znl4b4lrZku29O42/AVD\n\t pk4GGDiqhjSo8CLN1kSxG3VSN72chC7cd7TmhL9g+KbIWBtScDUcXwsYDqwd74TtmO\n\t rHceuuE6GWaXMdYW+nirk6x4J1U4WArg0Nz1HYruqRTm89YPyFf74rtjMqEypkT6GP\n\t S9YG3MPy0eoObeOOneh+wS1gAJNNcvURBBHBTxY0GIyRyMDG4iaPMJNu0v8iFLfPVV\n\t S9Xr8i1MxTAyw==","From":"=?utf-8?q?Krzysztof_Wilczy=C5=84ski?= ","To":"Bjorn Helgaas ","Cc":"Bjorn Helgaas ,\n Manivannan Sadhasivam ,\n Lorenzo Pieralisi ,\n Magnus Lindholm , Matt Turner ,\n Richard Henderson ,\n Christophe Leroy ,\n Madhavan Srinivasan ,\n Michael Ellerman , Nicholas Piggin ,\n Dexuan Cui ,\n =?utf-8?q?Krzysztof_Ha=C5=82asa?= ,\n Lukas Wunner , \"Oliver O'Halloran\" ,\n Saurabh Singh Sengar ,\n Shuan He , Srivatsa Bhat ,\n\t=?utf-8?q?Ilpo_J=C3=A4rvinen?= ,\n linux-pci@vger.kernel.org, linux-alpha@vger.kernel.org,\n linuxppc-dev@lists.ozlabs.org","Subject":"[PATCH v6 19/24] PCI: Add macros for legacy I/O and memory address\n 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>","X-Mailing-List":"linuxppc-dev@lists.ozlabs.org","List-Id":"","List-Help":"","List-Owner":"","List-Post":"","List-Archive":",\n ","List-Subscribe":",\n ,\n ","List-Unsubscribe":"","Precedence":"list","MIME-Version":"1.0","Content-Type":"text/plain; charset=UTF-8","Content-Transfer-Encoding":"8bit","X-Spam-Status":"No, score=-0.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED,\n\tDKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS\n\tautolearn=disabled version=4.0.1 OzLabs 8","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org"},"content":"Add defines for the standard PCI legacy address space sizes,\nreplacing the raw literals used by the legacy sysfs attributes.\n\nThen, replace open-coded values with the newly added macros.\n\nNo functional changes intended.\n\nSuggested-by: Ilpo Järvinen \nSigned-off-by: Krzysztof Wilczyński \n---\n drivers/pci/pci-sysfs.c | 4 ++--\n include/linux/pci.h | 5 +++++\n 2 files changed, 7 insertions(+), 2 deletions(-)","diff":"diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c\nindex 3a7bbb00ca60..ad8ee192c94b 100644\n--- a/drivers/pci/pci-sysfs.c\n+++ b/drivers/pci/pci-sysfs.c\n@@ -1055,7 +1055,7 @@ void pci_create_legacy_files(struct pci_bus *b)\n \n \tsysfs_bin_attr_init(b->legacy_io);\n \tb->legacy_io->attr.name = \"legacy_io\";\n-\tb->legacy_io->size = 0xffff;\n+\tb->legacy_io->size = PCI_LEGACY_IO_SIZE;\n \tb->legacy_io->attr.mode = 0600;\n \tb->legacy_io->read = pci_read_legacy_io;\n \tb->legacy_io->write = pci_write_legacy_io;\n@@ -1072,7 +1072,7 @@ void pci_create_legacy_files(struct pci_bus *b)\n \tb->legacy_mem = b->legacy_io + 1;\n \tsysfs_bin_attr_init(b->legacy_mem);\n \tb->legacy_mem->attr.name = \"legacy_mem\";\n-\tb->legacy_mem->size = 1024*1024;\n+\tb->legacy_mem->size = PCI_LEGACY_MEM_SIZE;\n \tb->legacy_mem->attr.mode = 0600;\n \tb->legacy_mem->mmap = pci_mmap_legacy_mem;\n \t/* See pci_create_attr() for motivation */\ndiff --git a/include/linux/pci.h b/include/linux/pci.h\nindex f6f55005f82d..6b630bac8c08 100644\n--- a/include/linux/pci.h\n+++ b/include/linux/pci.h\n@@ -27,6 +27,7 @@\n #include \n \n #include \n+#include \n #include \n #include \n #include \n@@ -1167,6 +1168,10 @@ enum {\n /* These external functions are only available when PCI support is enabled */\n #ifdef CONFIG_PCI\n \n+/* PCI legacy I/O port and memory address space sizes. */\n+#define PCI_LEGACY_IO_SIZE\t(SZ_64K - 1)\n+#define PCI_LEGACY_MEM_SIZE\tSZ_1M\n+\n extern unsigned int pci_flags;\n \n static inline void pci_set_flags(int flags) { pci_flags = flags; }\n","prefixes":["v6","19/24"]}