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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: q8wcomeM/KwK7hC85HbFyLdEsps27eZj7E6e4ZmS3ymhrkTfqg5d8+p7zTBeHeZZl39kAr2oaH74+vu09XdXPVvlnM0QuE2nb8yVWEZNxwFWU0pz0T6FXeU3U465jMqoEihcQHVC83rBuCH9+qO/p7N+KhKIY/oS8TfPKhFiNPb1+evvkqngBK9RWk/8eyfi5oMWJYWEZNdIj/UYgQDsfZ9rSH2Du4UZcuU3cHXIat/zHwDWKTY50BT2V3MnR0gmdX1JGkdWcYv3q9Vt5N1G966ODJBRo4r09glSxR5IgFDdAZhBZsJ1AILSwT8qjDix8iz71jL9cH8HzAhd8/A5U55TJdBUNq6dVxBWU1xINQ95OfyD2ITazD6xc052Ihm55gS4xxRfF+OlhqqkG9QNwyiE3fWDCkGwCDKmbo81o7Q/kQwr63dRoQEs0ojUEr5znOS2H+VRlk8sl+HN5h36Hei2avpje4m00tZxA/BUPtGZvCexB8gMvb1136Fk/9OrnU5eE/SrPdYxr1yBfOf2S+9bQ7OSU2Yfu3tz4bZ4c5Qb2/BE6ALlFIGn81wAgKBYycXtkYNeFUzmPt1eZ9xnO7n12CvSXH48RXwT1lNfjP3nL1OoibQ3zcllLag1Sr6swRGNtvyROyCGltzXPMqaBKje8LgeZVpDt9Hvv/lmpb4A4ZCrS9DfuzAJXROPqpzA5FzOqGAj8X11bs4A1+htpEChwpb1TOoYzFBmj81h27vgdgDUhyXEKBpQBbAKtSvj+iXNaDg8fJrEKO5xP4AxGIV/RTZa0+4BOYMr9heDUJD22iK8M9DBw83mhJxTXi+imQFj6xPDbCeMinyruMfWxUCWXGCCEM6kUiq/eY8CaD95QC8m7PrThFh48bmXc9EiyUvrrw71EevtBDZ7qLLnK8Ebm+/BQd9nhvIcCSTVW7KKdvjxQq4HQeCmrMJypVaejLW2EgeOrNb0WcMzK0ySj5psjHecfcSRu6QFKP+/Ut8Tbp+7BsTpkEs8Dcsfi1gB37xux6ivBkkbUg9quV2hIFe1klMFhkAR3n29ukC2hlOyyPCzpOARD1Q6s7EXD0XWc3J9S02U6eHDkj/Y6Sz0kNmaXE5S8RQCw23msUfMWglJYyISLe2eT38z9g0x118AlBmPAbeUZCB6osQyUJp6sufsENLo9LFTDRB2HF73M/WbaXxqzlhx6aIjsUY3piS5hnuKxiKtk8VOguXlqo5YTyfGzPsejmVcZTMQlR2ZUNBgy2kcDZvRgtqQKB9hJIt+Q7Jd5jS/+HmKHrupiF1bSoNVzmpCU2FwhQ/3PHi92FEbVz1zjiOIVAoA3t9IvKfcKAwl9E5MQli4hAgUOfaAl8+bWAt0/nBRU39XVQykRCM/od6j0ok9nXiKX/fHeZyj+Ik2IylzHu0zCvTW2O3ROZeQQEHjLbXTQGcQZ8QHs0Ph9wU4QZq3KVE9Le3VN095htP+o1itR35y/yMYriONtmzNisIxbyDSX2N3thRGjkpUfaPknJsMW9b2cHESxjg9O8INn2uy/gEI2wktwqMl7dOFVdQhlR4wqF+vDej6gr8TVbJFiPF6pw8nX5I2hPh+ X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 51210419-31cf-4f3f-8054-08db692399a2 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Jun 2023 19:56:22.6770 (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: YqfON9kIl/tgaZSpdEZLGzNkxw55TIqnVXDewrj3xb7VVQiUJYTdFox1mZ4NbCDa X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN0PR12MB5785 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230609_125643_518127_A45940F8 X-CRM114-Status: GOOD ( 14.41 ) 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,