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GET /api/patches/354075/?format=api
{ "id": 354075, "url": "http://patchwork.ozlabs.org/api/patches/354075/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-tegra/patch/1401448834-32659-4-git-send-email-hdoyu@nvidia.com/", "project": { "id": 21, "url": "http://patchwork.ozlabs.org/api/projects/21/?format=api", "name": "Linux Tegra Development", "link_name": "linux-tegra", "list_id": "linux-tegra.vger.kernel.org", "list_email": "linux-tegra@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<1401448834-32659-4-git-send-email-hdoyu@nvidia.com>", "list_archive_url": null, "date": "2014-05-30T11:20:16", "name": "[PATCHv8,03/21] iommu/of: check if dependee iommu is ready or not", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": true, "hash": "597823dc5dc9ee45d0b8adf63a148d889dbfd61d", "submitter": { "id": 10265, "url": "http://patchwork.ozlabs.org/api/people/10265/?format=api", "name": "Hiroshi Doyu", "email": "hdoyu@nvidia.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-tegra/patch/1401448834-32659-4-git-send-email-hdoyu@nvidia.com/mbox/", "series": [], "comments": "http://patchwork.ozlabs.org/api/patches/354075/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/354075/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<linux-tegra-owner@vger.kernel.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Received": [ "from vger.kernel.org (vger.kernel.org [209.132.180.67])\n\tby ozlabs.org (Postfix) with ESMTP id 61BC91400E2\n\tfor <incoming@patchwork.ozlabs.org>;\n\tFri, 30 May 2014 21:20:46 +1000 (EST)", "(majordomo@vger.kernel.org) by vger.kernel.org via listexpand\n\tid S1752358AbaE3LUn (ORCPT <rfc822;incoming@patchwork.ozlabs.org>);\n\tFri, 30 May 2014 07:20:43 -0400", "from hqemgate15.nvidia.com ([216.228.121.64]:17134 \"EHLO\n\thqemgate15.nvidia.com\" rhost-flags-OK-OK-OK-OK) by vger.kernel.org\n\twith ESMTP id S1751291AbaE3LUm (ORCPT\n\t<rfc822;linux-tegra@vger.kernel.org>);\n\tFri, 30 May 2014 07:20:42 -0400", "from hqnvupgp08.nvidia.com (Not Verified[216.228.121.13]) by\n\thqemgate15.nvidia.com\n\tid <B5388697f0001>; Fri, 30 May 2014 04:20:31 -0700", "from hqemhub01.nvidia.com ([172.20.12.94])\n\tby hqnvupgp08.nvidia.com (PGP Universal service);\n\tFri, 30 May 2014 04:15:38 -0700", "from deemhub02.nvidia.com (10.21.69.138) by hqemhub01.nvidia.com\n\t(172.20.150.30) with Microsoft SMTP Server (TLS) id 8.3.342.0;\n\tFri, 30 May 2014 04:20:41 -0700", "from oreo.nvidia.com (10.21.65.27) by deemhub02.nvidia.com\n\t(10.21.69.138) with Microsoft SMTP Server (TLS) id 8.3.342.0;\n\tFri, 30 May 2014 13:20:39 +0200" ], "X-PGP-Universal": "processed;\n\tby hqnvupgp08.nvidia.com on Fri, 30 May 2014 04:15:38 -0700", "From": "Hiroshi Doyu <hdoyu@nvidia.com>", "To": "<linux-tegra@vger.kernel.org>", "Subject": "[PATCHv8 03/21] iommu/of: check if dependee iommu is ready or not", "Date": "Fri, 30 May 2014 14:20:16 +0300", "Message-ID": "<1401448834-32659-4-git-send-email-hdoyu@nvidia.com>", "X-Mailer": "git-send-email 2.0.0.rc1.15.g7e76a2f", "In-Reply-To": "<1401448834-32659-1-git-send-email-hdoyu@nvidia.com>", "References": "<1401448834-32659-1-git-send-email-hdoyu@nvidia.com>", "X-NVConfidentiality": "public", "MIME-Version": "1.0", "Content-Type": "text/plain", "Sender": "linux-tegra-owner@vger.kernel.org", "Precedence": "bulk", "List-ID": "<linux-tegra.vger.kernel.org>", "X-Mailing-List": "linux-tegra@vger.kernel.org" }, "content": "IOMMU devices on the bus need to be poplulated first, then iommu\nmaster devices are done later.\n\nWith CONFIG_OF_IOMMU, \"iommus=\" DT binding would be used to identify\nwhether a device can be an iommu msater or not. If a device can, we'll\ndefer to populate that device till an depending iommu device is\npopulated.\n\nSigned-off-by: Hiroshi Doyu <hdoyu@nvidia.com>\n---\n drivers/iommu/of_iommu.c | 13 +++++++++++++\n include/linux/of_iommu.h | 6 ++++++\n 2 files changed, 19 insertions(+)", "diff": "diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c\nindex 5d1aeb90eae3..b9f5081515ae 100644\n--- a/drivers/iommu/of_iommu.c\n+++ b/drivers/iommu/of_iommu.c\n@@ -125,3 +125,16 @@ int of_get_dma_window(struct device_node *dn, const char *prefix, int index,\n \treturn 0;\n }\n EXPORT_SYMBOL_GPL(of_get_dma_window);\n+\n+int of_iommu_attach(struct device *dev)\n+{\n+\tstruct of_phandle_iter iter;\n+\n+\tof_property_for_each_phandle_with_args(iter, dev->of_node, \"iommus\",\n+\t\t\t\t\t \"iommu-cells\", 0) {\n+\t\tif (!of_find_iommu_by_node(iter.out_args.np))\n+\t\t\treturn -EPROBE_DEFER;\n+\t}\n+\n+\treturn 0;\n+}\ndiff --git a/include/linux/of_iommu.h b/include/linux/of_iommu.h\nindex 108306898c38..0e2f5681b45a 100644\n--- a/include/linux/of_iommu.h\n+++ b/include/linux/of_iommu.h\n@@ -14,6 +14,7 @@ extern int of_get_dma_window(struct device_node *dn, const char *prefix,\n \n void iommu_add(struct iommu *iommu);\n void iommu_del(struct iommu *iommu);\n+int of_iommu_attach(struct device *dev);\n \n #else\n \n@@ -32,6 +33,11 @@ static inline void iommu_del(struct iommu *iommu)\n {\n }\n \n+static inline int of_iommu_attach(struct device *dev)\n+{\n+\treturn 0;\n+}\n+\n #endif\t/* CONFIG_OF_IOMMU */\n \n #endif /* __OF_IOMMU_H */\n", "prefixes": [ "PATCHv8", "03/21" ] }