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Thu, 3 Aug 2023 00:08:16 +0000 Received: from LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::5111:16e8:5afe:1da1]) by LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::5111:16e8:5afe:1da1%6]) with mapi id 15.20.6631.045; Thu, 3 Aug 2023 00:08:16 +0000 From: Jason Gunthorpe To: Andy Gross , Alim Akhtar , Bjorn Andersson , AngeloGioacchino Del Regno , Baolin Wang , Christophe Leroy , Gerald Schaefer , Heiko Stuebner , iommu@lists.linux.dev, Jernej Skrabec , Jonathan Hunter , Joerg Roedel , Kevin Tian , Konrad Dybcio , Krzysztof Kozlowski , linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-s390@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, Russell King , linuxppc-dev@lists.ozlabs.org, Matthias Brugger , Matthew Rosato , Michael Ellerman , Nicholas Piggin , Orson Zhai , Rob Clark , Robin Murphy , Samuel Holland , Thierry Reding , Krishna Reddy , Chen-Yu Tsai , Will Deacon , Yong Wu , Chunyan Zhang Cc: Lu Baolu , Dmitry Osipenko , Marek Szyprowski , Nicolin Chen , Niklas Schnelle , Steven Price , Thierry Reding Subject: [PATCH v6 25/25] iommu: Convert remaining simple drivers to domain_alloc_paging() Date: Wed, 2 Aug 2023 21:08:12 -0300 Message-ID: <25-v6-e8114faedade+425-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v6-e8114faedade+425-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BLAPR03CA0140.namprd03.prod.outlook.com (2603:10b6:208:32e::25) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|MN0PR12MB5809:EE_ X-MS-Office365-Filtering-Correlation-Id: 76aed0b4-7a47-4ecc-fb43-08db93b5bb59 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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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: 76aed0b4-7a47-4ecc-fb43-08db93b5bb59 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 03 Aug 2023 00:08:14.8045 (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: b7YO9+kzZyULdrW2J0Aaore3W2eoIPOKf6av8YZ1VTvDdnyovarZR2XfWodrtdHH X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN0PR12MB5809 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.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 Reviewed-by: Lu Baolu --- 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,