From: Jacob Pan <jacob.jun.pan@linux.intel.com> To: iommu@lists.linux-foundation.org, LKML <linux-kernel@vger.kernel.org>, Joerg Roedel <joro@8bytes.org>, Jason Gunthorpe <jgg@nvidia.com>, "Christoph Hellwig" <hch@infradead.org>, "Lu Baolu" <baolu.lu@linux.intel.com>, Jean-Philippe Brucker <jean-philippe@linaro.com> Cc: "Tian, Kevin" <kevin.tian@intel.com>, Tony Luck <tony.luck@intel.com>, Dave Jiang <dave.jiang@intel.com>, Raj Ashok <ashok.raj@intel.com>, "Zanussi, Tom" <tom.zanussi@intel.com>, "Kumar, Sanjay K" <sanjay.k.kumar@intel.com>, Jacob Pan <jacob.jun.pan@intel.com>, Dan Williams <dan.j.williams@intel.com> Subject: [PATCH v2 1/8] iommu: Assign per device max PASID Date: Mon, 14 Mar 2022 22:07:05 -0700 [thread overview] Message-ID: <20220315050713.2000518-2-jacob.jun.pan@linux.intel.com> (raw) In-Reply-To: <20220315050713.2000518-1-jacob.jun.pan@linux.intel.com> From: Lu Baolu <baolu.lu@linux.intel.com> PCIe spec defines Max PASID Width per-device. Since a PASID is only used with IOMMU enabled, this patch introduces a PASID max variable on the per-device IOMMU data. It will be used for limiting PASID allocation in that PASID table is per-device. Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com> --- drivers/iommu/intel/iommu.c | 4 +++- include/linux/iommu.h | 13 +++++++++++++ 2 files changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 50666d250b36..881f8361eca2 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -2602,8 +2602,10 @@ static struct dmar_domain *dmar_insert_one_dev_info(struct intel_iommu *iommu, if (sm_supported(iommu)) { if (pasid_supported(iommu)) { int features = pci_pasid_features(pdev); - if (features >= 0) + if (features >= 0) { info->pasid_supported = features | 1; + iommu_set_dev_pasid_max(&pdev->dev, pci_max_pasids(pdev)); + } } if (info->ats_supported && ecap_prs(iommu->ecap) && diff --git a/include/linux/iommu.h b/include/linux/iommu.h index de0c57a567c8..369f05c2a4e2 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -364,6 +364,7 @@ struct iommu_fault_param { * @fwspec: IOMMU fwspec data * @iommu_dev: IOMMU device this device is linked to * @priv: IOMMU Driver private data + * @pasid_max Max PASID value supported by this device * * TODO: migrate other per device data pointers under iommu_dev_data, e.g. * struct iommu_group *iommu_group; @@ -375,8 +376,20 @@ struct dev_iommu { struct iommu_fwspec *fwspec; struct iommu_device *iommu_dev; void *priv; + unsigned int pasid_max; }; +static inline void iommu_set_dev_pasid_max(struct device *dev, + unsigned int max) +{ + struct dev_iommu *param = dev->iommu; + + if (WARN_ON(!param)) + return; + + param->pasid_max = max; +} + int iommu_device_register(struct iommu_device *iommu, const struct iommu_ops *ops, struct device *hwdev); -- 2.25.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
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From: Jacob Pan <jacob.jun.pan@linux.intel.com> To: iommu@lists.linux-foundation.org, LKML <linux-kernel@vger.kernel.org>, Joerg Roedel <joro@8bytes.org>, Jason Gunthorpe <jgg@nvidia.com>, "Christoph Hellwig" <hch@infradead.org>, "Lu Baolu" <baolu.lu@linux.intel.com>, Jean-Philippe Brucker <jean-philippe@linaro.com> Cc: Jacob Pan <jacob.jun.pan@intel.com>, Raj Ashok <ashok.raj@intel.com>, "Kumar, Sanjay K" <sanjay.k.kumar@intel.com>, Dave Jiang <dave.jiang@intel.com>, Tony Luck <tony.luck@intel.com>, "Zanussi, Tom" <tom.zanussi@intel.com>, Dan Williams <dan.j.williams@intel.com>, "Tian, Kevin" <kevin.tian@intel.com>, Yi Liu <yi.l.liu@intel.com> Subject: [PATCH v2 1/8] iommu: Assign per device max PASID Date: Mon, 14 Mar 2022 22:07:05 -0700 [thread overview] Message-ID: <20220315050713.2000518-2-jacob.jun.pan@linux.intel.com> (raw) In-Reply-To: <20220315050713.2000518-1-jacob.jun.pan@linux.intel.com> From: Lu Baolu <baolu.lu@linux.intel.com> PCIe spec defines Max PASID Width per-device. Since a PASID is only used with IOMMU enabled, this patch introduces a PASID max variable on the per-device IOMMU data. It will be used for limiting PASID allocation in that PASID table is per-device. Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com> --- drivers/iommu/intel/iommu.c | 4 +++- include/linux/iommu.h | 13 +++++++++++++ 2 files changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 50666d250b36..881f8361eca2 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -2602,8 +2602,10 @@ static struct dmar_domain *dmar_insert_one_dev_info(struct intel_iommu *iommu, if (sm_supported(iommu)) { if (pasid_supported(iommu)) { int features = pci_pasid_features(pdev); - if (features >= 0) + if (features >= 0) { info->pasid_supported = features | 1; + iommu_set_dev_pasid_max(&pdev->dev, pci_max_pasids(pdev)); + } } if (info->ats_supported && ecap_prs(iommu->ecap) && diff --git a/include/linux/iommu.h b/include/linux/iommu.h index de0c57a567c8..369f05c2a4e2 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -364,6 +364,7 @@ struct iommu_fault_param { * @fwspec: IOMMU fwspec data * @iommu_dev: IOMMU device this device is linked to * @priv: IOMMU Driver private data + * @pasid_max Max PASID value supported by this device * * TODO: migrate other per device data pointers under iommu_dev_data, e.g. * struct iommu_group *iommu_group; @@ -375,8 +376,20 @@ struct dev_iommu { struct iommu_fwspec *fwspec; struct iommu_device *iommu_dev; void *priv; + unsigned int pasid_max; }; +static inline void iommu_set_dev_pasid_max(struct device *dev, + unsigned int max) +{ + struct dev_iommu *param = dev->iommu; + + if (WARN_ON(!param)) + return; + + param->pasid_max = max; +} + int iommu_device_register(struct iommu_device *iommu, const struct iommu_ops *ops, struct device *hwdev); -- 2.25.1
next prev parent reply other threads:[~2022-03-15 5:04 UTC|newest] Thread overview: 122+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-03-15 5:07 [PATCH v2 0/8] Enable PASID for DMA API users Jacob Pan 2022-03-15 5:07 ` Jacob Pan 2022-03-15 5:07 ` Jacob Pan [this message] 2022-03-15 5:07 ` [PATCH v2 1/8] iommu: Assign per device max PASID Jacob Pan 2022-03-15 5:07 ` [PATCH v2 2/8] iommu: Add attach/detach_dev_pasid domain ops Jacob Pan 2022-03-15 5:07 ` Jacob Pan 2022-03-15 10:24 ` Tian, Kevin 2022-03-15 10:24 ` Tian, Kevin 2022-03-15 11:26 ` Jean-Philippe Brucker 2022-03-15 11:26 ` Jean-Philippe Brucker 2022-03-15 11:49 ` Tian, Kevin 2022-03-15 11:49 ` Tian, Kevin 2022-03-15 16:11 ` Jacob Pan 2022-03-15 16:11 ` Jacob Pan 2022-03-18 12:01 ` Lu Baolu 2022-03-18 12:01 ` Lu Baolu 2022-03-18 13:50 ` Jason Gunthorpe 2022-03-18 13:50 ` Jason Gunthorpe via iommu 2022-03-18 11:52 ` Lu Baolu 2022-03-18 11:52 ` Lu Baolu 2022-03-18 13:48 ` Jason Gunthorpe 2022-03-18 13:48 ` Jason Gunthorpe via iommu 2022-03-15 5:07 ` [PATCH v2 3/8] iommu/vt-d: Implement device_pasid domain attach ops Jacob Pan 2022-03-15 5:07 ` Jacob Pan 2022-03-15 10:33 ` Tian, Kevin 2022-03-15 10:33 ` Tian, Kevin 2022-03-15 22:23 ` Jacob Pan 2022-03-15 22:23 ` Jacob Pan 2022-03-15 14:33 ` Jason Gunthorpe 2022-03-15 14:33 ` Jason Gunthorpe via iommu 2022-03-15 22:36 ` Jacob Pan 2022-03-15 22:36 ` Jacob Pan 2022-03-15 23:04 ` Jason Gunthorpe 2022-03-15 23:04 ` Jason Gunthorpe via iommu 2022-03-16 20:50 ` Jacob Pan 2022-03-16 20:50 ` Jacob Pan 2022-03-16 22:15 ` Jason Gunthorpe 2022-03-16 22:15 ` Jason Gunthorpe via iommu 2022-03-16 22:23 ` Luck, Tony 2022-03-16 22:23 ` Luck, Tony 2022-03-17 0:04 ` Jason Gunthorpe 2022-03-17 0:04 ` Jason Gunthorpe via iommu 2022-03-18 5:47 ` Tian, Kevin 2022-03-18 5:47 ` Tian, Kevin 2022-03-18 13:47 ` Jason Gunthorpe 2022-03-18 13:47 ` Jason Gunthorpe via iommu 2022-03-17 0:49 ` Jacob Pan 2022-03-17 0:49 ` Jacob Pan 2022-03-17 13:23 ` Jason Gunthorpe 2022-03-17 13:23 ` Jason Gunthorpe via iommu 2022-03-17 18:23 ` Jacob Pan 2022-03-17 18:23 ` Jacob Pan 2022-03-16 7:41 ` Tian, Kevin 2022-03-16 7:41 ` Tian, Kevin 2022-03-16 21:01 ` Jacob Pan 2022-03-16 21:01 ` Jacob Pan 2022-03-18 5:33 ` Tian, Kevin 2022-03-18 5:33 ` Tian, Kevin 2022-03-28 21:41 ` Jacob Pan 2022-03-28 21:41 ` Jacob Pan 2022-03-16 7:39 ` Tian, Kevin 2022-03-16 7:39 ` Tian, Kevin 2022-03-16 20:51 ` Jacob Pan 2022-03-16 20:51 ` Jacob Pan 2022-03-15 5:07 ` [PATCH v2 4/8] iommu/vt-d: Use device_pasid attach op for RID2PASID Jacob Pan 2022-03-15 5:07 ` Jacob Pan 2022-03-16 7:54 ` Tian, Kevin 2022-03-16 7:54 ` Tian, Kevin 2022-03-17 20:45 ` Jacob Pan 2022-03-17 20:45 ` Jacob Pan 2022-03-15 5:07 ` [PATCH v2 5/8] iommu: Add PASID support for DMA mapping API users Jacob Pan 2022-03-15 5:07 ` Jacob Pan 2022-03-15 11:16 ` Robin Murphy 2022-03-15 11:16 ` Robin Murphy 2022-03-15 14:22 ` Jason Gunthorpe 2022-03-15 14:22 ` Jason Gunthorpe via iommu 2022-03-15 16:31 ` Jacob Pan 2022-03-15 16:31 ` Jacob Pan 2022-03-15 17:05 ` Jason Gunthorpe 2022-03-15 17:05 ` Jason Gunthorpe via iommu 2022-03-15 21:24 ` Jacob Pan 2022-03-15 21:24 ` Jacob Pan 2022-03-16 10:32 ` Tian, Kevin 2022-03-16 10:32 ` Tian, Kevin 2022-03-16 8:41 ` Tian, Kevin 2022-03-16 8:41 ` Tian, Kevin 2022-03-16 14:07 ` Jason Gunthorpe 2022-03-16 14:07 ` Jason Gunthorpe via iommu 2022-03-15 14:35 ` Jason Gunthorpe 2022-03-15 14:35 ` Jason Gunthorpe via iommu 2022-03-15 16:38 ` Jacob Pan 2022-03-15 16:38 ` Jacob Pan 2022-03-15 23:05 ` Jason Gunthorpe 2022-03-15 23:05 ` Jason Gunthorpe via iommu 2022-03-18 12:43 ` Lu Baolu 2022-03-18 12:43 ` Lu Baolu 2022-03-28 21:44 ` Jacob Pan 2022-03-28 21:44 ` Jacob Pan 2022-03-15 5:07 ` [PATCH v2 6/8] dmaengine: idxd: Use DMA API for in-kernel DMA with PASID Jacob Pan 2022-03-15 5:07 ` Jacob Pan 2022-03-18 6:10 ` Tian, Kevin 2022-03-18 6:10 ` Tian, Kevin 2022-03-29 17:39 ` Jacob Pan 2022-03-29 17:39 ` Jacob Pan 2022-03-15 5:07 ` [PATCH v2 7/8] iommu/vt-d: Delete supervisor/kernel SVA Jacob Pan 2022-03-15 5:07 ` Jacob Pan 2022-03-18 6:16 ` Tian, Kevin 2022-03-18 6:16 ` Tian, Kevin 2022-03-29 17:42 ` Jacob Pan 2022-03-29 17:42 ` Jacob Pan 2022-03-15 5:07 ` [PATCH v2 8/8] iommu: Remove unused driver data in sva_bind_device Jacob Pan 2022-03-15 5:07 ` Jacob Pan 2022-03-15 11:37 ` Jean-Philippe Brucker 2022-03-15 11:37 ` Jean-Philippe Brucker 2022-03-15 5:07 ` [PATCH v2 9/9] dmaengine: idxd: separate user and kernel pasid enabling Jacob Pan 2022-03-15 5:07 ` Jacob Pan 2022-03-18 6:28 ` Tian, Kevin 2022-03-18 6:28 ` Tian, Kevin 2022-03-15 8:16 ` [PATCH v2 0/8] Enable PASID for DMA API users Tian, Kevin 2022-03-15 8:16 ` Tian, Kevin 2022-03-15 15:49 ` Jacob Pan 2022-03-15 15:49 ` Jacob Pan
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