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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: 47d8c657-c8a9-4f65-732b-08db55a0a1f6 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 May 2023 00:01:00.6698 (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: I+6RjnoXJaCQkuVoVYrJG1vSxeV2QuXqb5zu2S4IfeialuSxgRjkD4oKcwRxX67Y X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB6786 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230515_170113_542426_FF917F4B X-CRM114-Status: GOOD ( 15.17 ) 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 Signed-off-by: Jason Gunthorpe --- drivers/iommu/fsl_pamu_domain.c | 7 ++----- 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 ++----- 5 files changed, 10 insertions(+), 25 deletions(-) diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c index ca4f5ebf028783..8d5d6a3acf9dfd 100644 --- a/drivers/iommu/fsl_pamu_domain.c +++ b/drivers/iommu/fsl_pamu_domain.c @@ -192,13 +192,10 @@ static void fsl_pamu_domain_free(struct iommu_domain *domain) kmem_cache_free(fsl_pamu_domain_cache, dma_domain); } -static struct iommu_domain *fsl_pamu_domain_alloc(unsigned type) +static struct iommu_domain *fsl_pamu_domain_alloc_paging(struct device *dev) { struct fsl_dma_domain *dma_domain; - if (type != IOMMU_DOMAIN_UNMANAGED) - return NULL; - dma_domain = kmem_cache_zalloc(fsl_pamu_domain_cache, GFP_KERNEL); if (!dma_domain) return NULL; @@ -476,7 +473,7 @@ static const struct iommu_ops fsl_pamu_ops = { .identity_domain = &fsl_pamu_identity_domain, .def_domain_type = &fsl_pamu_def_domain_type, .capable = fsl_pamu_capable, - .domain_alloc = fsl_pamu_domain_alloc, + .domain_alloc_paging = fsl_pamu_domain_alloc_paging, .probe_device = fsl_pamu_probe_device, .device_group = fsl_pamu_device_group, .default_domain_ops = &(const struct iommu_domain_ops) { 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,