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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: +LkP286R2qcJ5Tfv+aVC95O1lxNeTMO01qDwTvVHZiul+ZtI8EM4pUHGtgHihiCo1JD143fwm7TO+EZenJ15dRKeRc7Y1WbpJfoxNErEFncDoTpVZ+CLelWrXV9k9ozTyPfH8aTV/AbJZnQr0i0pjBz5PqIrDq49Cn1gOiX5CmClWU1xvaZFtWb6V3b91RYRCocBpTRzwUWGLMj0SmyjFM4KJe2EsrkX+ESAD7/6+4VhaaBeCSSfGACb4UK5vJgAt19nl1euR9v2BSRh3/4hAcUAC+R/SHSWXHvpBzPucFDmsVJkKMQP1cyftRi0knXRN73R3JzcT1NqC7k42vLFu0FU97kjZoPWsblRl/ktHzbQH9NbG7Es0zJ4Oy0A3CiBS9/6UTmRcs1NhfSIhe6jCbCEn/w7N81YRZhKmaR6KZWGuYZWcj5tW6p0NjUdugDAHw+IWQ5pMmm151SLrO9N0hslVO0X4lmHc15W2Cxy0eT2I70P48sRNnkJouF6K9n+uKsp3CbcTCC9zwSgnCGf17QnTuOvB5Wzemoma4mz1jh7/c180I1svxO4J6Yt1/DvX6whjXigDpekz0MkXpvsnMq/Nw5ofRvDdtUg2t6Jyj6tqhixWecd0zhkFmmy3TKH/C3iFIWVP4DqmpConCARtZ42vA2zMQXD4MpkY1I0aPmHiASzZY1aAdUAI3Qp/qCVe3Dn1vyiA/XP4oMWDgP55HN3Jx2O7i/cIH1RgRy5ZNy1xm1ShN//PiNTTxLHivEXiicStCWuuN+Fcv1VyC/XUKniT0BgwwaMAXuE0Eg/906hFvFh15yd9BQrqtUlZSSgko53n3Lc66xldJCmCuHxSVTCZp9oR1x1dXzIbc5U+JnrYqnc30DkafQJmaLqTfTb9hozajouaa8nyq7SBT8Kbcl2sZU4G5GlNYG7YaIOXHLRELGJVb2/eU432L20BpmIXnum1SsGze9aThTUGdks5l1NLUAxCwxaLsFAE/pQ5x0O0IViUx98Brudihj8BAm4kZ6Emhe37e34fLhzNdqxKdevvEGHM5+XQbVerE/bl5DFv8cfAseo+U3FKQEd1McsY4rJWDelDTshqCg2EBFplY5qjUOyBlJDs9jpE4MEKqVe6XhZORmOJnt8VyPGlq89f8+lC0AD6wAluDjfZsUbMmFsv0kpoRGrFMhlM5jPkFOAcMdQ3slxVUJ+zSCUfFYxMBr54le2qVJCFtOZ0lL50f9+2Kn80wbJV69q0aFwZJJR8+tnERKnR4qOfDN6QLiyCPz571lOs2sev98ZNUr5j8g2ZN3uV7gM0xapOstdJrrB7JkAIiuMwXod+gpqU1YgbVQn16WbrK3ROj1dDpr64GwAkDlzR4LZmLePloJLvbQdkp/ePXmFDQqcm2Gb2k30n5hTAYBtDD0ZbreEF+hIrsKnD8gkYN9sOKSRi++thM3fhEmtG2Bg9R8j6OnLfTnJAyRoGQdQfhtLpkZ5OXC3UOCzfMOfily73piTSCg8wCBL5E71+1o4KchkI80y7/gIkHHzJABHi2JUGj2vB8yPHVS+lTUW6PhUe3nTJu05qNl0g2Fq+GI1aOSHBPkD/DKa X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2b7e12b3-a9ef-4b9b-3b29-08db69239603 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Jun 2023 19:56:16.6348 (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: gjzt2DZvJBjd9m35x4vPW1hfBYPZ5dzlS0wRZA1YwJqSVsRbwrPatgWHsmx3b06H X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR12MB7489 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230609_125634_444120_97091EA3 X-CRM114-Status: GOOD ( 15.05 ) 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 What tegra-smmu does during tegra_smmu_set_platform_dma() is actually putting the iommu into identity mode. Move to the new core support for ARM_DMA_USE_IOMMU by defining ops->identity_domain. Signed-off-by: Jason Gunthorpe --- drivers/iommu/tegra-smmu.c | 37 ++++++++++++++++++++++++++++++++----- 1 file changed, 32 insertions(+), 5 deletions(-) diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index 1cbf063ccf147a..f63f1d4f0bd10f 100644 --- a/drivers/iommu/tegra-smmu.c +++ b/drivers/iommu/tegra-smmu.c @@ -511,23 +511,39 @@ static int tegra_smmu_attach_dev(struct iommu_domain *domain, return err; } -static void tegra_smmu_set_platform_dma(struct device *dev) +static int tegra_smmu_identity_attach(struct iommu_domain *identity_domain, + struct device *dev) { struct iommu_domain *domain = iommu_get_domain_for_dev(dev); struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); - struct tegra_smmu_as *as = to_smmu_as(domain); - struct tegra_smmu *smmu = as->smmu; + struct tegra_smmu_as *as; + struct tegra_smmu *smmu; unsigned int index; if (!fwspec) - return; + return -ENODEV; + if (domain == identity_domain || !domain) + return 0; + + as = to_smmu_as(domain); + smmu = as->smmu; for (index = 0; index < fwspec->num_ids; index++) { tegra_smmu_disable(smmu, fwspec->ids[index], as->id); tegra_smmu_as_unprepare(smmu, as); } + return 0; } +static struct iommu_domain_ops tegra_smmu_identity_ops = { + .attach_dev = tegra_smmu_identity_attach, +}; + +static struct iommu_domain tegra_smmu_identity_domain = { + .type = IOMMU_DOMAIN_IDENTITY, + .ops = &tegra_smmu_identity_ops, +}; + static void tegra_smmu_set_pde(struct tegra_smmu_as *as, unsigned long iova, u32 value) { @@ -962,11 +978,22 @@ static int tegra_smmu_of_xlate(struct device *dev, return iommu_fwspec_add_ids(dev, &id, 1); } +static int tegra_smmu_def_domain_type(struct device *dev) +{ + /* + * FIXME: For now we want to run all translation in IDENTITY mode, due + * to some device quirks. Better would be to just quirk the troubled + * devices. + */ + return IOMMU_DOMAIN_IDENTITY; +} + static const struct iommu_ops tegra_smmu_ops = { + .identity_domain = &tegra_smmu_identity_domain, + .def_domain_type = &tegra_smmu_def_domain_type, .domain_alloc = tegra_smmu_domain_alloc, .probe_device = tegra_smmu_probe_device, .device_group = tegra_smmu_device_group, - .set_platform_dma_ops = tegra_smmu_set_platform_dma, .of_xlate = tegra_smmu_of_xlate, .pgsize_bitmap = SZ_4K, .default_domain_ops = &(const struct iommu_domain_ops) {