Patch Detail
get:
Show a patch.
patch:
Update a patch.
put:
Update a patch.
GET /api/patches/2197139/?format=api
{ "id": 2197139, "url": "http://patchwork.ozlabs.org/api/patches/2197139/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260217080601.3808847-2-den@valinux.co.jp/", "project": { "id": 28, "url": "http://patchwork.ozlabs.org/api/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": "<20260217080601.3808847-2-den@valinux.co.jp>", "list_archive_url": null, "date": "2026-02-17T08:05:53", "name": "[v8,1/9] PCI: endpoint: Describe reserved subregions within BARs", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "1cdd8777ae989d4446caac36d2e8627b3faf7109", "submitter": { "id": 91573, "url": "http://patchwork.ozlabs.org/api/people/91573/?format=api", "name": "Koichiro Den", "email": "den@valinux.co.jp" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260217080601.3808847-2-den@valinux.co.jp/mbox/", "series": [ { "id": 492390, "url": "http://patchwork.ozlabs.org/api/series/492390/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/list/?series=492390", "date": "2026-02-17T08:05:52", "name": "PCI: endpoint: pci-ep-msi: Add embedded doorbell fallback", "version": 8, "mbox": "http://patchwork.ozlabs.org/series/492390/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2197139/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2197139/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-pci+bounces-47426-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 (1024-bit key;\n unprotected) header.d=valinux.co.jp header.i=@valinux.co.jp\n header.a=rsa-sha256 header.s=selector1 header.b=kHu2iBci;\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; helo=tor.lore.kernel.org;\n envelope-from=linux-pci+bounces-47426-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)", "smtp.subspace.kernel.org;\n\tdkim=pass (1024-bit key) header.d=valinux.co.jp header.i=@valinux.co.jp\n header.b=\"kHu2iBci\"", "smtp.subspace.kernel.org;\n arc=fail smtp.client-ip=52.101.229.81", "smtp.subspace.kernel.org;\n dmarc=pass (p=none dis=none) header.from=valinux.co.jp", "smtp.subspace.kernel.org;\n spf=pass smtp.mailfrom=valinux.co.jp", "dkim=none (message not signed)\n header.d=none;dmarc=none action=none header.from=valinux.co.jp;" ], "Received": [ "from tor.lore.kernel.org (tor.lore.kernel.org\n [IPv6:2600:3c04:e001:36c::12fc:5321])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fFXKC16ydz1xpl\n\tfor <incoming@patchwork.ozlabs.org>; Tue, 17 Feb 2026 19:06:23 +1100 (AEDT)", "from smtp.subspace.kernel.org (conduit.subspace.kernel.org\n [100.90.174.1])\n\tby tor.lore.kernel.org (Postfix) with ESMTP id 286F7302333E\n\tfor <incoming@patchwork.ozlabs.org>; Tue, 17 Feb 2026 08:06:17 +0000 (UTC)", "from localhost.localdomain (localhost.localdomain [127.0.0.1])\n\tby smtp.subspace.kernel.org (Postfix) with ESMTP id EB9C22DCF6C;\n\tTue, 17 Feb 2026 08:06:14 +0000 (UTC)", "from TY3P286CU002.outbound.protection.outlook.com\n (mail-japaneastazon11020081.outbound.protection.outlook.com [52.101.229.81])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby smtp.subspace.kernel.org (Postfix) with ESMTPS id B7D612DBF78;\n\tTue, 17 Feb 2026 08:06:13 +0000 (UTC)", "from TY7P286MB7722.JPNP286.PROD.OUTLOOK.COM (2603:1096:405:38f::10)\n by OS7P286MB7132.JPNP286.PROD.OUTLOOK.COM (2603:1096:604:42f::6) with\n Microsoft SMTP Server (version=TLS1_2,\n cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9611.16; Tue, 17 Feb\n 2026 08:06:08 +0000", "from TY7P286MB7722.JPNP286.PROD.OUTLOOK.COM\n ([fe80::2305:327c:28ec:9b32]) by TY7P286MB7722.JPNP286.PROD.OUTLOOK.COM\n ([fe80::2305:327c:28ec:9b32%5]) with mapi id 15.20.9611.013; Tue, 17 Feb 2026\n 08:06:08 +0000" ], "ARC-Seal": [ "i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1771315574; cv=fail;\n b=EPqxVUnrX2PF9FbnHc9DlGZ6vk8toMg1qnc5UPoFGOUy8Uum6nqh070uiTVNeDmU7h79FworonHS93gvGhhsRZJcwD2GA1A2smEevW3vwF7w6IZEmjpc02xS2wr01Tp4QKAdeH6BCZCV1t8ur6r44q6ELew1gqC0VgaRkVDhvHY=", "i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none;\n b=xgoamDk/UCM7MQ3OLA6IXbMtexZCxyoo1nYqkQlJojmZjIgPSrbbESVIg78RKSlHv6x5cebr9yIkikkRZD83f9PBU5vIYkZwwq3+c2WxPfygf14+zzkxrvZkkj3jvHu1ijQLokmRvI4X2x/PGmQKlNxjAZu1ONb+ZK9uVV/odZJOTrDaQT6X4GQFl6kDthd2WM0FpnF4Hy8/2MI7BOS3BfubEo3h2/xlMFtVHonanWGjYq7apssuuT1AHKozUxdr1vQXys08KAj5BIlsjXlyTnfcH8ZU4gGBi/ZHPOQtMDgcvC/Y+xYez5ZiWhnzchhJbdZ6uyuIwQp2nI8hLVq4Wg==" ], "ARC-Message-Signature": [ "i=2; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1771315574; c=relaxed/simple;\n\tbh=9Q9qko1WkESgBX7kwzR9bPXHZaZqmeuXgr3J5joEKik=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t Content-Type:MIME-Version;\n b=uJc87JrQOXaXkGfQv/sEzu8XyfZ/BydV+ekFSM+Mbd6LiyDwiIWTXhH7NgqdtVUgEDmKJF0nOwL9mESrOxfeCfBhpqZiIaWqbBO10840pwOSUA00fDTbSLj/WVLGcRgY6t5aC0eKqF0AcVIULv8boHhoCNn5XoEIFZ3o74LSNSs=", "i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com;\n s=arcselector10001;\n h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1;\n bh=XFcVKHil3Cz9aiQkWsEZEXTsG4xoIsNXs+oJdexGnc0=;\n b=OoNb2wUUfc6aOP02AycfNBBh8u/ek7WkyRA3wZWXbADdkKe5rf/oxA6Use+oOzFp4LsknXFaxh4qUnC8Y5dOXAoCgVM3PcRSQqg1yKmtG93TmAWVp7aBlSOJ7L5JFbyuwX1zgMXfirQ8LkwsliXOdU+6N9uQ55U+3gTjkAMEnFqVYhM0Ofu4gakHnSwDAapjPZVeJ4hJYdRG10w2hptoej2SNbIdCysLbvHxDfek5a+LamMApDGcZs1x0lHJ0ItJKZeuGj3G0TWJDuPYszJUr+pMxb2T62v8/6vdqroKVXdwASv2Q8gABaFFKVdEMnc9C+lNxK1roLRlJmGlRiX9qw==" ], "ARC-Authentication-Results": [ "i=2; smtp.subspace.kernel.org;\n dmarc=pass (p=none dis=none) header.from=valinux.co.jp;\n spf=pass smtp.mailfrom=valinux.co.jp;\n dkim=pass (1024-bit key) header.d=valinux.co.jp header.i=@valinux.co.jp\n header.b=kHu2iBci; arc=fail smtp.client-ip=52.101.229.81", "i=1; mx.microsoft.com 1; spf=pass\n smtp.mailfrom=valinux.co.jp; dmarc=pass action=none\n header.from=valinux.co.jp; dkim=pass header.d=valinux.co.jp; arc=none" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=valinux.co.jp;\n s=selector1;\n h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;\n bh=XFcVKHil3Cz9aiQkWsEZEXTsG4xoIsNXs+oJdexGnc0=;\n b=kHu2iBciAKF9h7xE1rWQIdH4EFDV3qCFjy8LSLOSTN9zYH6KANzHlctPJox75WYYW6WMFsN5xwjeUeNQo0akCGP1nOhE50AuZWiFnZXuxoJHmuHbhFPsfAI7XvAaLkEnYAxoaC/UphIy78D5cjnTl3cslleeZijT+/fPJJEMTZA=", "From": "Koichiro Den <den@valinux.co.jp>", "To": "jingoohan1@gmail.com,\n\tmani@kernel.org,\n\tlpieralisi@kernel.org,\n\tkwilczynski@kernel.org,\n\trobh@kernel.org,\n\tbhelgaas@google.com,\n\theiko@sntech.de,\n\tkishon@kernel.org,\n\tjdmason@kudzu.us,\n\tdave.jiang@intel.com,\n\tallenbh@gmail.com,\n\tcassel@kernel.org,\n\tshawn.lin@rock-chips.com,\n\tFrank.Li@nxp.com", "Cc": "linux-pci@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org,\n\tlinux-arm-kernel@lists.infradead.org,\n\tlinux-rockchip@lists.infradead.org,\n\tntb@lists.linux.dev", "Subject": "[PATCH v8 1/9] PCI: endpoint: Describe reserved subregions within\n BARs", "Date": "Tue, 17 Feb 2026 17:05:53 +0900", "Message-ID": "<20260217080601.3808847-2-den@valinux.co.jp>", "X-Mailer": "git-send-email 2.51.0", "In-Reply-To": "<20260217080601.3808847-1-den@valinux.co.jp>", "References": "<20260217080601.3808847-1-den@valinux.co.jp>", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain", "X-ClientProxiedBy": "TYWPR01CA0022.jpnprd01.prod.outlook.com\n (2603:1096:400:aa::9) To TY7P286MB7722.JPNP286.PROD.OUTLOOK.COM\n (2603:1096:405:38f::10)", "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", "X-MS-PublicTrafficType": "Email", "X-MS-TrafficTypeDiagnostic": "TY7P286MB7722:EE_|OS7P286MB7132:EE_", "X-MS-Office365-Filtering-Correlation-Id": "74e12b00-c874-4e17-2b09-08de6dfb6811", "X-MS-Exchange-SenderADCheck": "1", "X-MS-Exchange-AntiSpam-Relay": "0", "X-Microsoft-Antispam": "\n\tBCL:0;ARA:13230040|366016|376014|1800799024|7416014|10070799003|921020;", "X-Microsoft-Antispam-Message-Info": "\n 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", "X-Forefront-Antispam-Report": "\n\tCIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:TY7P286MB7722.JPNP286.PROD.OUTLOOK.COM;PTR:;CAT:NONE;SFS:(13230040)(366016)(376014)(1800799024)(7416014)(10070799003)(921020);DIR:OUT;SFP:1102;", "X-MS-Exchange-AntiSpam-MessageData-ChunkCount": "1", "X-MS-Exchange-AntiSpam-MessageData-0": "\n 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", "X-OriginatorOrg": "valinux.co.jp", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n 74e12b00-c874-4e17-2b09-08de6dfb6811", "X-MS-Exchange-CrossTenant-AuthSource": "TY7P286MB7722.JPNP286.PROD.OUTLOOK.COM", "X-MS-Exchange-CrossTenant-AuthAs": "Internal", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "17 Feb 2026 08:06:08.3925\n (UTC)", "X-MS-Exchange-CrossTenant-FromEntityHeader": "Hosted", "X-MS-Exchange-CrossTenant-Id": "7a57bee8-f73d-4c5f-a4f7-d72c91c8c111", "X-MS-Exchange-CrossTenant-MailboxType": "HOSTED", "X-MS-Exchange-CrossTenant-UserPrincipalName": "\n dU63ebQSHM8CUigvo8U/MTvJSdL0Q42o6uGYWR8cFPG7UTWacsmGxJ+pcQ+4X8tOlU5SLxnH9+wLLt0fgdJ3Mw==", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "OS7P286MB7132" }, "content": "Some endpoint controllers expose platform-owned, fixed register windows\nwithin a BAR that EPF drivers must not reprogram (e.g. a BAR marked\nBAR_RESERVED). Even in that case, EPF drivers may need to reference a\nwell-defined subset of that BAR, e.g. to reuse an integrated DMA\ncontroller MMIO window as a doorbell target.\n\nIntroduce struct pci_epc_bar_rsvd_region and extend struct\npci_epc_bar_desc so EPC drivers can advertise such fixed subregions in a\ncontroller-agnostic way.\n\nNo functional change for existing users.\n\nSigned-off-by: Koichiro Den <den@valinux.co.jp>\n---\n include/linux/pci-epc.h | 28 ++++++++++++++++++++++++++++\n 1 file changed, 28 insertions(+)", "diff": "diff --git a/include/linux/pci-epc.h b/include/linux/pci-epc.h\nindex c021c7af175f..7a87f5962dd0 100644\n--- a/include/linux/pci-epc.h\n+++ b/include/linux/pci-epc.h\n@@ -200,6 +200,30 @@ enum pci_epc_bar_type {\n \tBAR_RESERVED,\n };\n \n+/**\n+ * enum pci_epc_bar_rsvd_region_type - type of a fixed subregion behind a BAR\n+ * @PCI_EPC_BAR_RSVD_DMA_CTRL_MMIO: Integrated DMA controller MMIO window\n+ *\n+ * BARs marked BAR_RESERVED are owned by the SoC/EPC hardware and must not be\n+ * reprogrammed by EPF drivers. Some of them still expose fixed subregions that\n+ * EPFs may want to reference (e.g. embedded doorbell fallback).\n+ */\n+enum pci_epc_bar_rsvd_region_type {\n+\tPCI_EPC_BAR_RSVD_DMA_CTRL_MMIO = 0,\n+};\n+\n+/**\n+ * struct pci_epc_bar_rsvd_region - fixed subregion behind a BAR\n+ * @type: reserved region type\n+ * @offset: offset within the BAR aperture\n+ * @size: size of the reserved region\n+ */\n+struct pci_epc_bar_rsvd_region {\n+\tenum pci_epc_bar_rsvd_region_type\ttype;\n+\tresource_size_t\t\t\t\toffset;\n+\tresource_size_t\t\t\t\tsize;\n+};\n+\n /**\n * struct pci_epc_bar_desc - hardware description for a BAR\n * @type: the type of the BAR\n@@ -213,11 +237,15 @@ enum pci_epc_bar_type {\n *\t\t(If BARx is a 64-bit BAR that an EPF driver is not allowed to\n *\t\ttouch, then both BARx and BARx+1 must be set to type\n *\t\tBAR_RESERVED.)\n+ * @nr_rsvd_regions: number of fixed subregions described for BAR_RESERVED\n+ * @rsvd_regions: fixed subregions behind BAR_RESERVED\n */\n struct pci_epc_bar_desc {\n \tenum pci_epc_bar_type type;\n \tu64 fixed_size;\n \tbool only_64bit;\n+\tu8 nr_rsvd_regions;\n+\tconst struct pci_epc_bar_rsvd_region *rsvd_regions;\n };\n \n /**\n", "prefixes": [ "v8", "1/9" ] }