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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 0110fe4e-8987-48c5-fb2a-08db6e9c4b50 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Jun 2023 19:02:56.2071 (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: IK26pWdshZuFg4GgDLtYSE6JNEK5MqpzSabcvCgbk5Xh8TT1qKM5NrT4/o+tKqvM X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ1PR12MB6051 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230616_120310_455760_7835C126 X-CRM114-Status: GOOD ( 14.33 ) 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 These drivers don't support IOMMU_DOMAIN_DMA, so this commit effectively allows them to support that mode. The prior work to require default_domains makes this safe because every one of these drivers is either compilation incompatible with dma-iommu.c, or already establishing a default_domain. In both cases alloc_domain() will never be called with IOMMU_DOMAIN_DMA for these drivers so it is safe to drop the test. Removing these tests clarifies that the domain allocation path is only about the functionality of a paging domain and has nothing to do with policy of how the paging domain is used for UNMANAGED/DMA/DMA_FQ. Tested-by: Niklas Schnelle Tested-by: Steven Price Tested-by: Marek Szyprowski Tested-by: Nicolin Chen Signed-off-by: Jason Gunthorpe --- drivers/iommu/msm_iommu.c | 7 ++----- drivers/iommu/mtk_iommu_v1.c | 7 ++----- drivers/iommu/omap-iommu.c | 7 ++----- drivers/iommu/s390-iommu.c | 7 ++----- 4 files changed, 8 insertions(+), 20 deletions(-) diff --git a/drivers/iommu/msm_iommu.c b/drivers/iommu/msm_iommu.c index 26ed81cfeee897..a163cee0b7242d 100644 --- a/drivers/iommu/msm_iommu.c +++ b/drivers/iommu/msm_iommu.c @@ -302,13 +302,10 @@ static void __program_context(void __iomem *base, int ctx, SET_M(base, ctx, 1); } -static struct iommu_domain *msm_iommu_domain_alloc(unsigned type) +static struct iommu_domain *msm_iommu_domain_alloc_paging(struct device *dev) { struct msm_priv *priv; - if (type != IOMMU_DOMAIN_UNMANAGED) - return NULL; - priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (!priv) goto fail_nomem; @@ -691,7 +688,7 @@ irqreturn_t msm_iommu_fault_handler(int irq, void *dev_id) static struct iommu_ops msm_iommu_ops = { .identity_domain = &msm_iommu_identity_domain, - .domain_alloc = msm_iommu_domain_alloc, + .domain_alloc_paging = msm_iommu_domain_alloc_paging, .probe_device = msm_iommu_probe_device, .device_group = generic_device_group, .pgsize_bitmap = MSM_IOMMU_PGSIZES, diff --git a/drivers/iommu/mtk_iommu_v1.c b/drivers/iommu/mtk_iommu_v1.c index 7c0c1d50df5f75..67e044c1a7d93b 100644 --- a/drivers/iommu/mtk_iommu_v1.c +++ b/drivers/iommu/mtk_iommu_v1.c @@ -270,13 +270,10 @@ static int mtk_iommu_v1_domain_finalise(struct mtk_iommu_v1_data *data) return 0; } -static struct iommu_domain *mtk_iommu_v1_domain_alloc(unsigned type) +static struct iommu_domain *mtk_iommu_v1_domain_alloc_paging(struct device *dev) { struct mtk_iommu_v1_domain *dom; - if (type != IOMMU_DOMAIN_UNMANAGED) - return NULL; - dom = kzalloc(sizeof(*dom), GFP_KERNEL); if (!dom) return NULL; @@ -585,7 +582,7 @@ static int mtk_iommu_v1_hw_init(const struct mtk_iommu_v1_data *data) static const struct iommu_ops mtk_iommu_v1_ops = { .identity_domain = &mtk_iommu_v1_identity_domain, - .domain_alloc = mtk_iommu_v1_domain_alloc, + .domain_alloc_paging = mtk_iommu_v1_domain_alloc_paging, .probe_device = mtk_iommu_v1_probe_device, .probe_finalize = mtk_iommu_v1_probe_finalize, .release_device = mtk_iommu_v1_release_device, diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c index 34340ef15241bc..fcf99bd195b32e 100644 --- a/drivers/iommu/omap-iommu.c +++ b/drivers/iommu/omap-iommu.c @@ -1580,13 +1580,10 @@ static struct iommu_domain omap_iommu_identity_domain = { .ops = &omap_iommu_identity_ops, }; -static struct iommu_domain *omap_iommu_domain_alloc(unsigned type) +static struct iommu_domain *omap_iommu_domain_alloc_paging(struct device *dev) { struct omap_iommu_domain *omap_domain; - if (type != IOMMU_DOMAIN_UNMANAGED) - return NULL; - omap_domain = kzalloc(sizeof(*omap_domain), GFP_KERNEL); if (!omap_domain) return NULL; @@ -1748,7 +1745,7 @@ static struct iommu_group *omap_iommu_device_group(struct device *dev) static const struct iommu_ops omap_iommu_ops = { .identity_domain = &omap_iommu_identity_domain, - .domain_alloc = omap_iommu_domain_alloc, + .domain_alloc_paging = omap_iommu_domain_alloc_paging, .probe_device = omap_iommu_probe_device, .release_device = omap_iommu_release_device, .device_group = omap_iommu_device_group, diff --git a/drivers/iommu/s390-iommu.c b/drivers/iommu/s390-iommu.c index f0c867c57a5b9b..5695ad71d60e24 100644 --- a/drivers/iommu/s390-iommu.c +++ b/drivers/iommu/s390-iommu.c @@ -39,13 +39,10 @@ static bool s390_iommu_capable(struct device *dev, enum iommu_cap cap) } } -static struct iommu_domain *s390_domain_alloc(unsigned domain_type) +static struct iommu_domain *s390_domain_alloc_paging(struct device *dev) { struct s390_domain *s390_domain; - if (domain_type != IOMMU_DOMAIN_UNMANAGED) - return NULL; - s390_domain = kzalloc(sizeof(*s390_domain), GFP_KERNEL); if (!s390_domain) return NULL; @@ -447,7 +444,7 @@ void zpci_destroy_iommu(struct zpci_dev *zdev) static const struct iommu_ops s390_iommu_ops = { .default_domain = &s390_iommu_platform_domain, .capable = s390_iommu_capable, - .domain_alloc = s390_domain_alloc, + .domain_alloc_paging = s390_domain_alloc_paging, .probe_device = s390_iommu_probe_device, .release_device = s390_iommu_release_device, .device_group = generic_device_group,