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GET /api/patches/2215821/?format=api
{ "id": 2215821, "url": "http://patchwork.ozlabs.org/api/patches/2215821/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260325-parse_iommu_cells-v11-1-1fefa5c0e82c@oss.qualcomm.com/", "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": "<20260325-parse_iommu_cells-v11-1-1fefa5c0e82c@oss.qualcomm.com>", "list_archive_url": null, "date": "2026-03-25T11:08:22", "name": "[v11,1/3] of: Add convenience wrappers for of_map_id()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "67617829e1b8cda81cacfb33ab869df2e7583dbe", "submitter": { "id": 92739, "url": "http://patchwork.ozlabs.org/api/people/92739/?format=api", "name": "Vijayanand Jitta", "email": "vijayanand.jitta@oss.qualcomm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260325-parse_iommu_cells-v11-1-1fefa5c0e82c@oss.qualcomm.com/mbox/", "series": [ { "id": 497422, "url": "http://patchwork.ozlabs.org/api/series/497422/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/list/?series=497422", "date": "2026-03-25T11:08:21", "name": "of: parsing of multi #{iommu,msi}-cells in maps", "version": 11, "mbox": "http://patchwork.ozlabs.org/series/497422/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2215821/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2215821/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-pci+bounces-51051-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 (2048-bit key;\n unprotected) header.d=qualcomm.com header.i=@qualcomm.com header.a=rsa-sha256\n header.s=qcppdkim1 header.b=kFqzj8El;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com\n header.a=rsa-sha256 header.s=google header.b=jml8tpvJ;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c0a:e001:db::12fc:5321; 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charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "Message-Id": "<20260325-parse_iommu_cells-v11-1-1fefa5c0e82c@oss.qualcomm.com>", "References": "<20260325-parse_iommu_cells-v11-0-1fefa5c0e82c@oss.qualcomm.com>", "In-Reply-To": "<20260325-parse_iommu_cells-v11-0-1fefa5c0e82c@oss.qualcomm.com>", "To": "Nipun Gupta <nipun.gupta@amd.com>,\n Nikhil Agarwal <nikhil.agarwal@amd.com>, Joerg Roedel <joro@8bytes.org>,\n Will Deacon <will@kernel.org>, Robin Murphy <robin.murphy@arm.com>,\n Marc Zyngier <maz@kernel.org>, Lorenzo Pieralisi <lpieralisi@kernel.org>,\n Thomas Gleixner <tglx@kernel.org>, Saravana Kannan <saravanak@kernel.org>,\n Richard Zhu <hongxing.zhu@nxp.com>, Lucas Stach <l.stach@pengutronix.de>,\n\t=?utf-8?q?Krzysztof_Wilczy=C5=84ski?= <kwilczynski@kernel.org>,\n Manivannan Sadhasivam <mani@kernel.org>, Bjorn Helgaas <bhelgaas@google.com>,\n Frank Li <Frank.Li@nxp.com>, Sascha Hauer <s.hauer@pengutronix.de>,\n Pengutronix Kernel Team <kernel@pengutronix.de>,\n Fabio Estevam <festevam@gmail.com>, Juergen Gross <jgross@suse.com>,\n Stefano Stabellini <sstabellini@kernel.org>,\n Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>,\n Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>,\n Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>,\n Bjorn Andersson <bjorn.andersson@oss.qualcomm.com>,\n Rob Herring <robh@kernel.org>, Conor Dooley <conor+dt@kernel.org>,\n Krzysztof Kozlowski <krzk+dt@kernel.org>,\n Prakash Gupta <prakash.gupta@oss.qualcomm.com>,\n Vikash Garodia <vikash.garodia@oss.qualcomm.com>", "Cc": "linux-kernel@vger.kernel.org, iommu@lists.linux.dev,\n linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,\n linux-pci@vger.kernel.org, imx@lists.linux.dev,\n xen-devel@lists.xenproject.org, linux-arm-msm@vger.kernel.org,\n Vijayanand Jitta <vijayanand.jitta@oss.qualcomm.com>", "X-Mailer": "b4 0.12.3", "X-Developer-Signature": "v=1; a=ed25519-sha256; t=1774436938; l=8620;\n i=vijayanand.jitta@oss.qualcomm.com; s=20260301; h=from:subject:message-id;\n bh=Bsp9hT6sgzNh1NrIZ0uduUy4Yj5U0gq9szC+ECoPqVA=;\n b=XTgGqalcyL/WLhRInaGtXLu5D/HUpXAmnrAFKW3XHxKkbT0f80fJnPG6NgpusUQ/1o+/QleBf\n abe0ppIcpOUDCujoSS9v/HAMK3rslqgr+MXWDyY7MfIW3OAe1ZlOh+0", "X-Developer-Key": "i=vijayanand.jitta@oss.qualcomm.com; a=ed25519;\n pk=Lpi7Cs3wHe8KZtqvyci7FTOLzsKpEHKGCaPNZw+1zRI=", "X-Authority-Analysis": "v=2.4 cv=Jvr8bc4C c=1 sm=1 tr=0 ts=69c3c262 cx=c_pps\n a=oF/VQ+ItUULfLr/lQ2/icg==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17\n a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10\n a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22\n a=7CQSdrXTAAAA:8 a=VwQbUJbxAAAA:8 a=8AirrxEcAAAA:8 a=1XWaLZrsAAAA:8\n a=EUspDBNiAAAA:8 a=f4O9XJQV64orvU1ydW8A:9 a=QEXdDO2ut3YA:10\n a=3WC7DwWrALyhR5TkjVHa:22 a=a-qgeE7W1pNrGK8U0ZQC:22 a=ST-jHhOKWsTCqRlWije3:22", "X-Proofpoint-ORIG-GUID": "5Pt-8-swI7DpqX80fTi8DVBjfHkIkHqM", "X-Proofpoint-Spam-Details-Enc": "AW1haW4tMjYwMzI1MDA3OSBTYWx0ZWRfX6VZd4JwYFuv9\n N4+ZGIcryDT+mzgsf1+069+3FLuH6Alh2WD1O70T0OV+xO3gEzMCpiK3AprTT4Bs6gc4rtIsKxl\n MATMqklQj9RypKldb+7ZTR0Vnf4JM/QJhmq0T35L7Rajt6VHo8QJCTwSTeRdNCWHWofynoYqLes\n K+7d+BqzDJo2Bm5MmL5EcNFB7vCY3LYyujNpcLzNdfmlW4g8kYWM/A+gSoVjjzLxBJ2hujizQSG\n gfau5yOnHeypVrDhETQ7BP9CKgEqpNCfkLiQaQ56qnZJAJVwB8m7ljdmXI0Fy6SEFTIl7biyKVW\n xOIJFFgUrVNCR4EIEgiRzJ7ZLMmM3+5BfxcxDFNl0UxLJ739oGMRVtaUx4AMIexAFR6eVqzEmIr\n PTwK9rx41EZtKswSKViyOgjHJ7k55zsm9Ow1rgCCVDmjma4i6aYf1OmLtSKAJTU1BVBirZVIc8A\n 3+/+5KW0mL+17niDmZg==", "X-Proofpoint-GUID": "5Pt-8-swI7DpqX80fTi8DVBjfHkIkHqM", "X-Proofpoint-Virus-Version": "vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-03-25_03,2026-03-24_01,2025-10-01_01", "X-Proofpoint-Spam-Details": "rule=outbound_notspam policy=outbound score=0\n lowpriorityscore=0 adultscore=0 impostorscore=0 suspectscore=0 phishscore=0\n priorityscore=1501 spamscore=0 clxscore=1015 bulkscore=0 malwarescore=0\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603250079" }, "content": "From: Robin Murphy <robin.murphy@arm.com>\n\nSince we now have quite a few users parsing \"iommu-map\" and \"msi-map\"\nproperties, give them some wrappers to conveniently encapsulate the\nappropriate sets of property names. This will also make it easier to\nthen change of_map_id() to correctly account for specifier cells.\n\nReviewed-by: Rob Herring (Arm) <robh@kernel.org>\nReviewed-by: Frank Li <Frank.Li@nxp.com>\nAcked-by: Marc Zyngier <maz@kernel.org>\nAcked-by: Bjorn Helgaas <bhelgaas@google.com>\nSigned-off-by: Robin Murphy <robin.murphy@arm.com>\nSigned-off-by: Vijayanand Jitta <vijayanand.jitta@oss.qualcomm.com>\n---\n drivers/cdx/cdx_msi.c | 3 +--\n drivers/iommu/of_iommu.c | 4 +---\n drivers/irqchip/irq-gic-its-msi-parent.c | 2 +-\n drivers/of/base.c | 38 ++++++++++++++++++++++++++++++++\n drivers/of/irq.c | 3 +--\n drivers/pci/controller/dwc/pci-imx6.c | 6 ++---\n drivers/pci/controller/pcie-apple.c | 3 +--\n drivers/xen/grant-dma-ops.c | 3 +--\n include/linux/of.h | 18 +++++++++++++++\n 9 files changed, 64 insertions(+), 16 deletions(-)", "diff": "diff --git a/drivers/cdx/cdx_msi.c b/drivers/cdx/cdx_msi.c\nindex 91b95422b263..63b3544ec997 100644\n--- a/drivers/cdx/cdx_msi.c\n+++ b/drivers/cdx/cdx_msi.c\n@@ -128,8 +128,7 @@ static int cdx_msi_prepare(struct irq_domain *msi_domain,\n \tint ret;\n \n \t/* Retrieve device ID from requestor ID using parent device */\n-\tret = of_map_id(parent->of_node, cdx_dev->msi_dev_id, \"msi-map\", \"msi-map-mask\",\n-\t\t\tNULL, &dev_id);\n+\tret = of_map_msi_id(parent->of_node, cdx_dev->msi_dev_id, NULL, &dev_id);\n \tif (ret) {\n \t\tdev_err(dev, \"of_map_id failed for MSI: %d\\n\", ret);\n \t\treturn ret;\ndiff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c\nindex 6b989a62def2..a511ecf21fcd 100644\n--- a/drivers/iommu/of_iommu.c\n+++ b/drivers/iommu/of_iommu.c\n@@ -48,9 +48,7 @@ static int of_iommu_configure_dev_id(struct device_node *master_np,\n \tstruct of_phandle_args iommu_spec = { .args_count = 1 };\n \tint err;\n \n-\terr = of_map_id(master_np, *id, \"iommu-map\",\n-\t\t\t \"iommu-map-mask\", &iommu_spec.np,\n-\t\t\t iommu_spec.args);\n+\terr = of_map_iommu_id(master_np, *id, &iommu_spec.np, iommu_spec.args);\n \tif (err)\n \t\treturn err;\n \ndiff --git a/drivers/irqchip/irq-gic-its-msi-parent.c b/drivers/irqchip/irq-gic-its-msi-parent.c\nindex d36b278ae66c..b63343a227a9 100644\n--- a/drivers/irqchip/irq-gic-its-msi-parent.c\n+++ b/drivers/irqchip/irq-gic-its-msi-parent.c\n@@ -180,7 +180,7 @@ static int of_pmsi_get_msi_info(struct irq_domain *domain, struct device *dev, u\n \n \tstruct device_node *msi_ctrl __free(device_node) = NULL;\n \n-\treturn of_map_id(dev->of_node, dev->id, \"msi-map\", \"msi-map-mask\", &msi_ctrl, dev_id);\n+\treturn of_map_msi_id(dev->of_node, dev->id, &msi_ctrl, dev_id);\n }\n \n static int its_pmsi_prepare(struct irq_domain *domain, struct device *dev,\ndiff --git a/drivers/of/base.c b/drivers/of/base.c\nindex 57420806c1a2..ae04487bd614 100644\n--- a/drivers/of/base.c\n+++ b/drivers/of/base.c\n@@ -2201,3 +2201,41 @@ int of_map_id(const struct device_node *np, u32 id,\n \treturn 0;\n }\n EXPORT_SYMBOL_GPL(of_map_id);\n+\n+/**\n+ * of_map_iommu_id - Translate an ID using \"iommu-map\" bindings.\n+ * @np: root complex device node.\n+ * @id: Requester ID of the device (e.g. PCI RID/BDF or a platform\n+ * stream/device ID) used as the lookup key in the iommu-map table.\n+ * @target: optional pointer to a target device node.\n+ * @id_out: optional pointer to receive the translated ID.\n+ *\n+ * Convenience wrapper around of_map_id() using \"iommu-map\" and \"iommu-map-mask\".\n+ *\n+ * Return: 0 on success or a standard error code on failure.\n+ */\n+int of_map_iommu_id(const struct device_node *np, u32 id,\n+\t\t struct device_node **target, u32 *id_out)\n+{\n+\treturn of_map_id(np, id, \"iommu-map\", \"iommu-map-mask\", target, id_out);\n+}\n+EXPORT_SYMBOL_GPL(of_map_iommu_id);\n+\n+/**\n+ * of_map_msi_id - Translate an ID using \"msi-map\" bindings.\n+ * @np: root complex device node.\n+ * @id: Requester ID of the device (e.g. PCI RID/BDF or a platform\n+ * stream/device ID) used as the lookup key in the msi-map table.\n+ * @target: optional pointer to a target device node.\n+ * @id_out: optional pointer to receive the translated ID.\n+ *\n+ * Convenience wrapper around of_map_id() using \"msi-map\" and \"msi-map-mask\".\n+ *\n+ * Return: 0 on success or a standard error code on failure.\n+ */\n+int of_map_msi_id(const struct device_node *np, u32 id,\n+\t\t struct device_node **target, u32 *id_out)\n+{\n+\treturn of_map_id(np, id, \"msi-map\", \"msi-map-mask\", target, id_out);\n+}\n+EXPORT_SYMBOL_GPL(of_map_msi_id);\ndiff --git a/drivers/of/irq.c b/drivers/of/irq.c\nindex 6367c67732d2..e37c1b3f8736 100644\n--- a/drivers/of/irq.c\n+++ b/drivers/of/irq.c\n@@ -817,8 +817,7 @@ u32 of_msi_xlate(struct device *dev, struct device_node **msi_np, u32 id_in)\n \t * \"msi-map\" or an \"msi-parent\" property.\n \t */\n \tfor (parent_dev = dev; parent_dev; parent_dev = parent_dev->parent) {\n-\t\tif (!of_map_id(parent_dev->of_node, id_in, \"msi-map\",\n-\t\t\t\t\"msi-map-mask\", msi_np, &id_out))\n+\t\tif (!of_map_msi_id(parent_dev->of_node, id_in, msi_np, &id_out))\n \t\t\tbreak;\n \t\tif (!of_check_msi_parent(parent_dev->of_node, msi_np))\n \t\t\tbreak;\ndiff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c\nindex a5b8d0b71677..bff8289f804a 100644\n--- a/drivers/pci/controller/dwc/pci-imx6.c\n+++ b/drivers/pci/controller/dwc/pci-imx6.c\n@@ -1144,8 +1144,7 @@ static int imx_pcie_add_lut_by_rid(struct imx_pcie *imx_pcie, u32 rid)\n \tu32 sid = 0;\n \n \ttarget = NULL;\n-\terr_i = of_map_id(dev->of_node, rid, \"iommu-map\", \"iommu-map-mask\",\n-\t\t\t &target, &sid_i);\n+\terr_i = of_map_iommu_id(dev->of_node, rid, &target, &sid_i);\n \tif (target) {\n \t\tof_node_put(target);\n \t} else {\n@@ -1158,8 +1157,7 @@ static int imx_pcie_add_lut_by_rid(struct imx_pcie *imx_pcie, u32 rid)\n \t}\n \n \ttarget = NULL;\n-\terr_m = of_map_id(dev->of_node, rid, \"msi-map\", \"msi-map-mask\",\n-\t\t\t &target, &sid_m);\n+\terr_m = of_map_msi_id(dev->of_node, rid, &target, &sid_m);\n \n \t/*\n \t * err_m target\ndiff --git a/drivers/pci/controller/pcie-apple.c b/drivers/pci/controller/pcie-apple.c\nindex 2d92fc79f6dd..a0937b7b3c4d 100644\n--- a/drivers/pci/controller/pcie-apple.c\n+++ b/drivers/pci/controller/pcie-apple.c\n@@ -764,8 +764,7 @@ static int apple_pcie_enable_device(struct pci_host_bridge *bridge, struct pci_d\n \tdev_dbg(&pdev->dev, \"added to bus %s, index %d\\n\",\n \t\tpci_name(pdev->bus->self), port->idx);\n \n-\terr = of_map_id(port->pcie->dev->of_node, rid, \"iommu-map\",\n-\t\t\t\"iommu-map-mask\", NULL, &sid);\n+\terr = of_map_iommu_id(port->pcie->dev->of_node, rid, NULL, &sid);\n \tif (err)\n \t\treturn err;\n \ndiff --git a/drivers/xen/grant-dma-ops.c b/drivers/xen/grant-dma-ops.c\nindex c2603e700178..1b7696b2d762 100644\n--- a/drivers/xen/grant-dma-ops.c\n+++ b/drivers/xen/grant-dma-ops.c\n@@ -325,8 +325,7 @@ static int xen_dt_grant_init_backend_domid(struct device *dev,\n \t\tstruct pci_dev *pdev = to_pci_dev(dev);\n \t\tu32 rid = PCI_DEVID(pdev->bus->number, pdev->devfn);\n \n-\t\tif (of_map_id(np, rid, \"iommu-map\", \"iommu-map-mask\", &iommu_spec.np,\n-\t\t\t\tiommu_spec.args)) {\n+\t\tif (of_map_iommu_id(np, rid, &iommu_spec.np, iommu_spec.args)) {\n \t\t\tdev_dbg(dev, \"Cannot translate ID\\n\");\n \t\t\treturn -ESRCH;\n \t\t}\ndiff --git a/include/linux/of.h b/include/linux/of.h\nindex be6ec4916adf..fe841f3cc747 100644\n--- a/include/linux/of.h\n+++ b/include/linux/of.h\n@@ -465,6 +465,12 @@ int of_map_id(const struct device_node *np, u32 id,\n \t const char *map_name, const char *map_mask_name,\n \t struct device_node **target, u32 *id_out);\n \n+int of_map_iommu_id(const struct device_node *np, u32 id,\n+\t\t struct device_node **target, u32 *id_out);\n+\n+int of_map_msi_id(const struct device_node *np, u32 id,\n+\t\t struct device_node **target, u32 *id_out);\n+\n phys_addr_t of_dma_get_max_cpu_address(struct device_node *np);\n \n struct kimage;\n@@ -934,6 +940,18 @@ static inline int of_map_id(const struct device_node *np, u32 id,\n \treturn -EINVAL;\n }\n \n+static inline int of_map_iommu_id(const struct device_node *np, u32 id,\n+\t\t\t\t struct device_node **target, u32 *id_out)\n+{\n+\treturn -EINVAL;\n+}\n+\n+static inline int of_map_msi_id(const struct device_node *np, u32 id,\n+\t\t\t\tstruct device_node **target, u32 *id_out)\n+{\n+\treturn -EINVAL;\n+}\n+\n static inline phys_addr_t of_dma_get_max_cpu_address(struct device_node *np)\n {\n \treturn PHYS_ADDR_MAX;\n", "prefixes": [ "v11", "1/3" ] }