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R. Silva" , Heiko Stuebner , iommu@lists.linux.dev, Jean-Philippe Brucker , Jernej Skrabec , Jonathan Hunter , Joerg Roedel , Kees Cook , Konrad Dybcio , Krzysztof Kozlowski , Len Brown , linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-hardening@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, Lorenzo Pieralisi , Marek Szyprowski , Hector Martin , Matthias Brugger , Orson Zhai , "Rafael J. Wysocki" , Rob Clark , Robert Moore , Rob Herring , Robin Murphy , Samuel Holland , Sudeep Holla , Sven Peter , Thierry Reding , Krishna Reddy , virtualization@lists.linux.dev, Chen-Yu Tsai , Will Deacon , Yong Wu , Chunyan Zhang Cc: =?utf-8?q?Andr=C3=A9_Draszik?= , patches@lists.linux.dev Subject: [PATCH 07/30] iommu/of: Call of_iommu_get_resv_regions() directly Date: Wed, 29 Nov 2023 21:10:14 -0400 Message-ID: <7-v1-f82a05539a64+5042-iommu_fwspec_p2_jgg@nvidia.com> In-Reply-To: <0-v1-f82a05539a64+5042-iommu_fwspec_p2_jgg@nvidia.com> References: X-ClientProxiedBy: SN6PR16CA0044.namprd16.prod.outlook.com (2603:10b6:805:ca::21) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|PH0PR12MB5484:EE_ X-MS-Office365-Filtering-Correlation-Id: 3ee7532c-6dfb-446f-5483-08dbf1412b1f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:LV2PR12MB5869.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(366004)(346002)(136003)(396003)(39860400002)(376002)(230922051799003)(451199024)(1800799012)(186009)(64100799003)(1191002)(8936002)(110136005)(8676002)(316002)(66556008)(4326008)(86362001)(66476007)(6486002)(478600001)(66946007)(41300700001)(36756003)(921008)(7416002)(7366002)(2906002)(7406005)(5660300002)(38100700002)(2616005)(6512007)(6506007)(6666004)(83380400001)(26005)(202311291699003)(4216001);DIR:OUT;SFP:1101; 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They just need to parse the OF description. The generic iommu_dma_get_resv_regions() really just knows how to parse the IORT ACPI in addition to OF. Directly call of_iommu_get_resv_regions() instead. Move the declaration of of_iommu_get_resv_regions() to iommu-driver.h since it is now intended to be called by drivers. Signed-off-by: Jason Gunthorpe --- drivers/iommu/apple-dart.c | 5 ++--- drivers/iommu/dma-iommu.c | 5 ++--- drivers/iommu/of_iommu.c | 3 +++ drivers/iommu/virtio-iommu.c | 5 ++--- include/linux/iommu-driver.h | 9 +++++++++ include/linux/of_iommu.h | 8 -------- 6 files changed, 18 insertions(+), 17 deletions(-) diff --git a/drivers/iommu/apple-dart.c b/drivers/iommu/apple-dart.c index 25135440b5dd54..bb0e5a4577fc03 100644 --- a/drivers/iommu/apple-dart.c +++ b/drivers/iommu/apple-dart.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include #include @@ -32,8 +33,6 @@ #include #include -#include "dma-iommu.h" - #define DART_MAX_STREAMS 256 #define DART_MAX_TTBR 4 #define MAX_DARTS_PER_DEVICE 2 @@ -972,7 +971,7 @@ static void apple_dart_get_resv_regions(struct device *dev, list_add_tail(®ion->list, head); } - iommu_dma_get_resv_regions(dev, head); + of_iommu_get_resv_regions(dev, head); } static const struct iommu_ops apple_dart_iommu_ops = { diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index d644b0502ef48e..5a828c92cd38b2 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -23,7 +23,7 @@ #include #include #include -#include +#include #include #include #include @@ -475,8 +475,7 @@ void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list) fwspec->ids, fwspec->num_ids); } - if (dev->of_node) - of_iommu_get_resv_regions(dev, list); + of_iommu_get_resv_regions(dev, list); } EXPORT_SYMBOL(iommu_dma_get_resv_regions); diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c index cf68cdebc9f318..20266a8edd5c71 100644 --- a/drivers/iommu/of_iommu.c +++ b/drivers/iommu/of_iommu.c @@ -217,6 +217,9 @@ void of_iommu_get_resv_regions(struct device *dev, struct list_head *list) struct of_phandle_iterator it; int err; + if (!dev->of_node) + return; + of_for_each_phandle(&it, err, dev->of_node, "memory-region", NULL, 0) { const __be32 *maps, *end; struct resource phys; diff --git a/drivers/iommu/virtio-iommu.c b/drivers/iommu/virtio-iommu.c index 34db37fd9675cd..b1a7b14a6c7a2f 100644 --- a/drivers/iommu/virtio-iommu.c +++ b/drivers/iommu/virtio-iommu.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -22,8 +23,6 @@ #include -#include "dma-iommu.h" - #define MSI_IOVA_BASE 0x8000000 #define MSI_IOVA_LENGTH 0x100000 @@ -969,7 +968,7 @@ static void viommu_get_resv_regions(struct device *dev, struct list_head *head) list_add_tail(&msi->list, head); } - iommu_dma_get_resv_regions(dev, head); + of_iommu_get_resv_regions(dev, head); } static struct iommu_ops viommu_ops; diff --git a/include/linux/iommu-driver.h b/include/linux/iommu-driver.h index 636b5b5f18f76f..c572620d3069b4 100644 --- a/include/linux/iommu-driver.h +++ b/include/linux/iommu-driver.h @@ -25,4 +25,13 @@ struct iommu_probe_info { int iommu_probe_device_pinf(struct iommu_probe_info *pinf); struct iommu_device *iommu_device_from_fwnode(struct fwnode_handle *fwnode); +#if IS_ENABLED(CONFIG_OF_IOMMU) +void of_iommu_get_resv_regions(struct device *dev, struct list_head *list); +#else +static inline void of_iommu_get_resv_regions(struct device *dev, + struct list_head *list) +{ +} +#endif + #endif diff --git a/include/linux/of_iommu.h b/include/linux/of_iommu.h index e61cbbe12dac6f..9d5532f2f11486 100644 --- a/include/linux/of_iommu.h +++ b/include/linux/of_iommu.h @@ -11,9 +11,6 @@ struct iommu_ops; extern int of_iommu_configure(struct device *dev, struct device_node *master_np, const u32 *id); -extern void of_iommu_get_resv_regions(struct device *dev, - struct list_head *list); - #else static inline int of_iommu_configure(struct device *dev, @@ -23,11 +20,6 @@ static inline int of_iommu_configure(struct device *dev, return -ENODEV; } -static inline void of_iommu_get_resv_regions(struct device *dev, - struct list_head *list) -{ -} - #endif /* CONFIG_OF_IOMMU */ #endif /* __OF_IOMMU_H */