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GET /api/patches/1869538/?format=api
HTTP 200 OK
Allow: GET, PUT, PATCH, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "id": 1869538,
    "url": "http://patchwork.ozlabs.org/api/patches/1869538/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/linux-arc/patch/8-v1-720585788a7d+811b-iommu_fwspec_p1_jgg@nvidia.com/",
    "project": {
        "id": 48,
        "url": "http://patchwork.ozlabs.org/api/projects/48/?format=api",
        "name": "Linux ARC development",
        "link_name": "linux-arc",
        "list_id": "linux-snps-arc.lists.infradead.org",
        "list_email": "linux-snps-arc@lists.infradead.org",
        "web_url": "",
        "scm_url": "",
        "webscm_url": "",
        "list_archive_url": "",
        "list_archive_url_format": "",
        "commit_url_format": ""
    },
    "msgid": "<8-v1-720585788a7d+811b-iommu_fwspec_p1_jgg@nvidia.com>",
    "list_archive_url": null,
    "date": "2023-11-29T00:48:04",
    "name": "[08/10] iommu/tegra: Use tegra_dev_iommu_get_stream_id() in the remaining places",
    "commit_ref": null,
    "pull_url": null,
    "state": "new",
    "archived": false,
    "hash": "6672f6985dfb5c29a066a705b1692a577ab08768",
    "submitter": {
        "id": 79424,
        "url": "http://patchwork.ozlabs.org/api/people/79424/?format=api",
        "name": "Jason Gunthorpe",
        "email": "jgg@nvidia.com"
    },
    "delegate": null,
    "mbox": "http://patchwork.ozlabs.org/project/linux-arc/patch/8-v1-720585788a7d+811b-iommu_fwspec_p1_jgg@nvidia.com/mbox/",
    "series": [
        {
            "id": 384302,
            "url": "http://patchwork.ozlabs.org/api/series/384302/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/linux-arc/list/?series=384302",
            "date": "2023-11-29T00:47:56",
            "name": "IOMMU related FW parsing cleanup",
            "version": 1,
            "mbox": "http://patchwork.ozlabs.org/series/384302/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/patches/1869538/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/1869538/checks/",
    "tags": {},
    "related": [],
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        "From": "Jason Gunthorpe <jgg@nvidia.com>",
        "To": "David Airlie <airlied@gmail.com>,\n\tAlyssa Rosenzweig <alyssa@rosenzweig.io>,\n\tAlbert Ou <aou@eecs.berkeley.edu>,\n\tasahi@lists.linux.dev,\n\tCatalin Marinas <catalin.marinas@arm.com>,\n\tDanilo Krummrich <dakr@redhat.com>,\n\tDaniel Vetter <daniel@ffwll.ch>,\n\tDexuan Cui <decui@microsoft.com>,\n\tdevicetree@vger.kernel.org,\n\tdmaengine@vger.kernel.org,\n\tdri-devel@lists.freedesktop.org,\n\tDavid Woodhouse <dwmw2@infradead.org>,\n\tFrank Rowand <frowand.list@gmail.com>,\n\tHanjun Guo <guohanjun@huawei.com>,\n\tHaiyang Zhang <haiyangz@microsoft.com>,\n\tiommu@lists.linux.dev,\n\tJon Hunter <jonathanh@nvidia.com>,\n\tJoerg Roedel <joro@8bytes.org>,\n\tKarol Herbst <kherbst@redhat.com>,\n\tKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,\n\t\"K. Y. Srinivasan\" <kys@microsoft.com>,\n\tLaxman Dewangan <ldewangan@nvidia.com>,\n\tLen Brown <lenb@kernel.org>,\n\tlinux-acpi@vger.kernel.org,\n\tlinux-arm-kernel@lists.infradead.org,\n\tlinux-hyperv@vger.kernel.org,\n\tlinux-mips@vger.kernel.org,\n\tlinux-riscv@lists.infradead.org,\n\tlinux-snps-arc@lists.infradead.org,\n\tlinux-tegra@vger.kernel.org,\n\tRussell King <linux@armlinux.org.uk>,\n\tLorenzo Pieralisi <lpieralisi@kernel.org>,\n\tLyude Paul <lyude@redhat.com>,\n\tMarek Szyprowski <m.szyprowski@samsung.com>,\n\tnouveau@lists.freedesktop.org,\n\tPalmer Dabbelt <palmer@dabbelt.com>,\n\tPaul Walmsley <paul.walmsley@sifive.com>,\n\t\"Rafael J. Wysocki\" <rafael@kernel.org>,\n\tRob Herring <robh+dt@kernel.org>,\n\tRobin Murphy <robin.murphy@arm.com>,\n\tSudeep Holla <sudeep.holla@arm.com>,\n\tSuravee Suthikulpanit <suravee.suthikulpanit@amd.com>,\n\tSven Peter <sven@svenpeter.dev>,\n\tThomas Bogendoerfer <tsbogend@alpha.franken.de>,\n\tVineet Gupta <vgupta@kernel.org>,\n\tVinod Koul <vkoul@kernel.org>,\n\tWei Liu <wei.liu@kernel.org>,\n\tWill Deacon <will@kernel.org>",
        "Cc": "Lu Baolu <baolu.lu@linux.intel.com>,\n\tChristoph Hellwig <hch@lst.de>,\n\tJerry Snitselaar <jsnitsel@redhat.com>,\n\tHector Martin <marcan@marcan.st>,\n\tMoritz Fischer <mdf@kernel.org>,\n\tpatches@lists.linux.dev,\n\t\"Rafael J. Wysocki\" <rafael.j.wysocki@intel.com>,\n\tRob Herring <robh@kernel.org>,\n\tThierry Reding <thierry.reding@gmail.com>",
        "Subject": "[PATCH 08/10] iommu/tegra: Use tegra_dev_iommu_get_stream_id() in the\n remaining places",
        "Date": "Tue, 28 Nov 2023 20:48:04 -0400",
        "Message-ID": "<8-v1-720585788a7d+811b-iommu_fwspec_p1_jgg@nvidia.com>",
        "In-Reply-To": "<0-v1-720585788a7d+811b-iommu_fwspec_p1_jgg@nvidia.com>",
        "References": "",
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    "content": "This API was defined to formalize the access to internal iommu details on\nsome Tegra SOCs, but a few callers got missed. Add them.\n\nThe helper already masks by 0xFFFF so remove this code from the callers.\n\nSuggested-by: Thierry Reding <thierry.reding@gmail.com>\nSigned-off-by: Jason Gunthorpe <jgg@nvidia.com>\n---\n drivers/dma/tegra186-gpc-dma.c                  |  8 +++-----\n drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gp10b.c |  7 ++-----\n drivers/memory/tegra/tegra186.c                 | 12 ++++++------\n 3 files changed, 11 insertions(+), 16 deletions(-)",
    "diff": "diff --git a/drivers/dma/tegra186-gpc-dma.c b/drivers/dma/tegra186-gpc-dma.c\nindex fa4d4142a68a21..88547a23825b18 100644\n--- a/drivers/dma/tegra186-gpc-dma.c\n+++ b/drivers/dma/tegra186-gpc-dma.c\n@@ -1348,8 +1348,8 @@ static int tegra_dma_program_sid(struct tegra_dma_channel *tdc, int stream_id)\n static int tegra_dma_probe(struct platform_device *pdev)\n {\n \tconst struct tegra_dma_chip_data *cdata = NULL;\n-\tstruct iommu_fwspec *iommu_spec;\n-\tunsigned int stream_id, i;\n+\tunsigned int i;\n+\tu32 stream_id;\n \tstruct tegra_dma *tdma;\n \tint ret;\n \n@@ -1378,12 +1378,10 @@ static int tegra_dma_probe(struct platform_device *pdev)\n \n \ttdma->dma_dev.dev = &pdev->dev;\n \n-\tiommu_spec = dev_iommu_fwspec_get(&pdev->dev);\n-\tif (!iommu_spec) {\n+\tif (!tegra_dev_iommu_get_stream_id(&pdev->dev, &stream_id)) {\n \t\tdev_err(&pdev->dev, \"Missing iommu stream-id\\n\");\n \t\treturn -EINVAL;\n \t}\n-\tstream_id = iommu_spec->ids[0] & 0xffff;\n \n \tret = device_property_read_u32(&pdev->dev, \"dma-channel-mask\",\n \t\t\t\t       &tdma->chan_mask);\ndiff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gp10b.c b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gp10b.c\nindex e7e8fdf3adab7a..b40fd1dbb21617 100644\n--- a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gp10b.c\n+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gp10b.c\n@@ -28,16 +28,13 @@ static void\n gp10b_ltc_init(struct nvkm_ltc *ltc)\n {\n \tstruct nvkm_device *device = ltc->subdev.device;\n-\tstruct iommu_fwspec *spec;\n+\tu32 sid;\n \n \tnvkm_wr32(device, 0x17e27c, ltc->ltc_nr);\n \tnvkm_wr32(device, 0x17e000, ltc->ltc_nr);\n \tnvkm_wr32(device, 0x100800, ltc->ltc_nr);\n \n-\tspec = dev_iommu_fwspec_get(device->dev);\n-\tif (spec) {\n-\t\tu32 sid = spec->ids[0] & 0xffff;\n-\n+\tif (tegra_dev_iommu_get_stream_id(device->dev, &sid)) {\n \t\t/* stream ID */\n \t\tnvkm_wr32(device, 0x160000, sid << 2);\n \t}\ndiff --git a/drivers/memory/tegra/tegra186.c b/drivers/memory/tegra/tegra186.c\nindex 533f85a4b2bdb7..3e4fbe94dd666e 100644\n--- a/drivers/memory/tegra/tegra186.c\n+++ b/drivers/memory/tegra/tegra186.c\n@@ -111,21 +111,21 @@ static void tegra186_mc_client_sid_override(struct tegra_mc *mc,\n static int tegra186_mc_probe_device(struct tegra_mc *mc, struct device *dev)\n {\n #if IS_ENABLED(CONFIG_IOMMU_API)\n-\tstruct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);\n \tstruct of_phandle_args args;\n \tunsigned int i, index = 0;\n+\tu32 sid;\n \n+\tWARN_ON(!tegra_dev_iommu_get_stream_id(dev, &sid));\n \twhile (!of_parse_phandle_with_args(dev->of_node, \"interconnects\", \"#interconnect-cells\",\n \t\t\t\t\t   index, &args)) {\n \t\tif (args.np == mc->dev->of_node && args.args_count != 0) {\n \t\t\tfor (i = 0; i < mc->soc->num_clients; i++) {\n \t\t\t\tconst struct tegra_mc_client *client = &mc->soc->clients[i];\n \n-\t\t\t\tif (client->id == args.args[0]) {\n-\t\t\t\t\tu32 sid = fwspec->ids[0] & MC_SID_STREAMID_OVERRIDE_MASK;\n-\n-\t\t\t\t\ttegra186_mc_client_sid_override(mc, client, sid);\n-\t\t\t\t}\n+\t\t\t\tif (client->id == args.args[0])\n+\t\t\t\t\ttegra186_mc_client_sid_override(\n+\t\t\t\t\t\tmc, client,\n+\t\t\t\t\t\tsid & MC_SID_STREAMID_OVERRIDE_MASK);\n \t\t\t}\n \t\t}\n \n",
    "prefixes": [
        "08/10"
    ]
}