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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: BVhCJLw/cV65UtBr6Vi9PKllG5qjOsCgk3SRAU/O+fsEwAnvsDzPhMXQguXoMipvDIATJJVPbkur0ixltovIGXiFFzJ15rBNpz0hF+XcXH+ZM4Z42cwU+NhSeJ1Lyis7xy1eDzR7lj+8DnPLuYh9JIi1tHy9qqwzJds2er4bXgLclm/ow6+O08s+h39B2ySGODgNxvr4LhDjGjvyj8D4yPvfAzXZw4SFalc2ZYbGgJP2OHPSx8T2Xovks5hdmd/p6PUGvTImr4wS2rdq6VFvFqoERc1EpUpbVSLXbgEH/R0SkDQ4muBRHGrgbz3+Y0FeTE8Po8aOOOCqy9mfyVDjZRVZfC1/WvM7mec5oMefy/9C5sSQAnW4uM01me3fzbsIv3EOB4lrM7YPr4u8SJFMTSHhSRunuEasR8MDiHNQGSYNZP5JhQpaZRhYnKjnTWRiEgZelB0e5EY5+Vc7zlgH6PxKy0sE4A5HmLgOFIG+1maAMf3xJplQhXfvvEI0PesfahpyKrOfazLVAkAakeNSIMdrm8hYSFC8oCfbtEkc+cFmT9x0MXcLLyy+whRflfiunAUtNvKwxS8Qq8ED05bd6S7WPLb0LO3BbhXlpKpx6ZbQeDabQdZi5QLsrjJbKpHORs4hLFJ5xtFNA9XqzIYPW8BsyKJ3IWNrV8ZB5UYxHx2ZrfKK1S0+qwfmJN5P08EVf4xOrKlCOomm3DHQxXGkNps8IU3vv8vtSBPdUMtY5LLTgKE7CNBicf253bTnq01BG1bahEGwi1COAL9obFT9dL6XwD/Op55MPtfEgsj64waqGy0HyjK400BR0PwMuDGaPgJvofSPv24byyBiMCMNxdfXeKVekyg6QiuyQz3ibY3x66cC25QzmKdRxXXn5knrUzLl3xZWylE6Ea0lc/9LUj7Mem92VXpRQSOC7qJqx0cdfhu3aD4w5IRB9E6giHth9j3ElJH3YnDe26AiwMYOYD98HLn24PSwC/yvv3/947bEZPG8RvyKOcs02xes3g5Zx7RECyeZEAFcS0D92F1GBVfYLGD2XqwryIlNk5doj0VTyk2mCuWTaQk1PoNiYvUkV4M+3A4pV6Zd8dqsc0fMuUltw1ClFB+HCp0FYPrKVlcsO5jmeopTASRrUAxRUUZOrDMocvxPBLVdw370uALVCmxWw06C3Ocva9Mai9KfUgDktbMRQi3Je7VNJtdYBb+3gNpfaPKo0KKkJTd7m4hgiCNOVVWGiTh+kIvlls+UqhUpTTHFBwpgaY5RWkHjPP77avhJSX9DIFXVVZnXukXofdtD9XXLa9m85XjZOJFLy3rulW1RbP8m3xWCC8oboou0F5IQAsyzr94tV94a7fu9f7gZ/FJtaLwr/5K+KCSafszLT0VO0uSn8MS9bh8UcsSeOpGcBnleM/U8veV2K0BuammAy4fWg2G/3jMyKdssfawRNshb5EdFAt8eFJrEiSqDPRm0Xwm3KHV2oU51BTKF9nNTO5SyREu0dnz2wmCHvqoSvPxXPhCw3wnxPiZjemDMTYrTE+sm/tjb9w1MZGqXdsTHP4qzBr7xSgmIewZ15czR9ICXPAbXNcCtaSTjxr+l X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 719f4613-fe12-4385-4593-08db6e9c4b7e X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Jun 2023 19:02:56.5004 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: eCiSm1w9oEWT2k5pY72RjoexHTrcywDz3wTSt3Z7UUf9FAfgXrb2VXtguyudLbzk X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ1PR12MB6051 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230616_120314_428614_FFC2E773 X-CRM114-Status: GOOD ( 13.01 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org All ARM64 iommu drivers should support IOMMU_DOMAIN_DMA to enable dma-iommu.c. tegra is blocking dma-iommu usage, and also default_domain's, because it wants an identity translation. This is needed for some device quirk. The correct way to do this is to support IDENTITY domains and use ops->def_domain_type() to return IOMMU_DOMAIN_IDENTITY for only the quirky devices. Add support for IOMMU_DOMAIN_DMA and force IOMMU_DOMAIN_IDENTITY mode for everything so no behavior changes. Signed-off-by: Jason Gunthorpe --- drivers/iommu/tegra-smmu.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index f63f1d4f0bd10f..6cba034905edbf 100644 --- a/drivers/iommu/tegra-smmu.c +++ b/drivers/iommu/tegra-smmu.c @@ -276,7 +276,7 @@ static struct iommu_domain *tegra_smmu_domain_alloc(unsigned type) { struct tegra_smmu_as *as; - if (type != IOMMU_DOMAIN_UNMANAGED) + if (type != IOMMU_DOMAIN_UNMANAGED && type != IOMMU_DOMAIN_DMA) return NULL; as = kzalloc(sizeof(*as), GFP_KERNEL); @@ -989,6 +989,12 @@ static int tegra_smmu_def_domain_type(struct device *dev) } static const struct iommu_ops tegra_smmu_ops = { + /* + * FIXME: For now we want to run all translation in IDENTITY mode, + * better would be to have a def_domain_type op do this for just the + * quirky device. + */ + .default_domain = &tegra_smmu_identity_domain, .identity_domain = &tegra_smmu_identity_domain, .def_domain_type = &tegra_smmu_def_domain_type, .domain_alloc = tegra_smmu_domain_alloc,