From: Jean-Philippe Brucker <jean-philippe@linaro.org>
To: joro@8bytes.org, will@kernel.org
Cc: lorenzo.pieralisi@arm.com, robh+dt@kernel.org,
guohanjun@huawei.com, sudeep.holla@arm.com, rjw@rjwysocki.net,
lenb@kernel.org, robin.murphy@arm.com,
Jonathan.Cameron@huawei.com, eric.auger@redhat.com,
iommu@lists.linux-foundation.org, devicetree@vger.kernel.org,
linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-accelerators@lists.ozlabs.org, baolu.lu@linux.intel.com,
jacob.jun.pan@linux.intel.com, kevin.tian@intel.com,
vdumpa@nvidia.com, zhangfei.gao@linaro.org,
shameerali.kolothum.thodi@huawei.com, vivek.gautam@arm.com,
zhukeqian1@huawei.com, wangzhou1@hisilicon.com,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
David Woodhouse <dwmw2@infradead.org>
Subject: [PATCH v13 04/10] iommu/vt-d: Support IOMMU_DEV_FEAT_IOPF
Date: Tue, 2 Mar 2021 10:26:40 +0100 [thread overview]
Message-ID: <20210302092644.2553014-5-jean-philippe@linaro.org> (raw)
In-Reply-To: <20210302092644.2553014-1-jean-philippe@linaro.org>
Allow drivers to query and enable IOMMU_DEV_FEAT_IOPF, which amounts to
checking whether PRI is enabled.
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
---
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Lu Baolu <baolu.lu@linux.intel.com>
---
drivers/iommu/intel/iommu.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index ee0932307d64..c5c5fd444779 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -5343,6 +5343,8 @@ static int siov_find_pci_dvsec(struct pci_dev *pdev)
static bool
intel_iommu_dev_has_feat(struct device *dev, enum iommu_dev_features feat)
{
+ struct device_domain_info *info = get_domain_info(dev);
+
if (feat == IOMMU_DEV_FEAT_AUX) {
int ret;
@@ -5357,13 +5359,13 @@ intel_iommu_dev_has_feat(struct device *dev, enum iommu_dev_features feat)
return !!siov_find_pci_dvsec(to_pci_dev(dev));
}
- if (feat == IOMMU_DEV_FEAT_SVA) {
- struct device_domain_info *info = get_domain_info(dev);
+ if (feat == IOMMU_DEV_FEAT_IOPF)
+ return info && info->pri_supported;
+ if (feat == IOMMU_DEV_FEAT_SVA)
return info && (info->iommu->flags & VTD_FLAG_SVM_CAPABLE) &&
info->pasid_supported && info->pri_supported &&
info->ats_supported;
- }
return false;
}
@@ -5374,6 +5376,9 @@ intel_iommu_dev_enable_feat(struct device *dev, enum iommu_dev_features feat)
if (feat == IOMMU_DEV_FEAT_AUX)
return intel_iommu_enable_auxd(dev);
+ if (feat == IOMMU_DEV_FEAT_IOPF)
+ return intel_iommu_dev_has_feat(dev, feat) ? 0 : -ENODEV;
+
if (feat == IOMMU_DEV_FEAT_SVA) {
struct device_domain_info *info = get_domain_info(dev);
--
2.30.1
next prev parent reply other threads:[~2021-03-02 20:09 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-02 9:26 [PATCH v13 00/10] iommu: I/O page faults for SMMUv3 Jean-Philippe Brucker
2021-03-02 9:26 ` [PATCH v13 01/10] iommu: Fix comment for struct iommu_fwspec Jean-Philippe Brucker
2021-03-25 17:37 ` Will Deacon
2021-03-02 9:26 ` [PATCH v13 02/10] iommu/arm-smmu-v3: Use device properties for pasid-num-bits Jean-Philippe Brucker
2021-03-25 17:36 ` Will Deacon
2021-03-02 9:26 ` [PATCH v13 03/10] iommu: Separate IOMMU_DEV_FEAT_IOPF from IOMMU_DEV_FEAT_SVA Jean-Philippe Brucker
2021-03-03 5:04 ` Lu Baolu
2021-03-02 9:26 ` Jean-Philippe Brucker [this message]
2021-03-02 9:26 ` [PATCH v13 05/10] uacce: Enable IOMMU_DEV_FEAT_IOPF Jean-Philippe Brucker
2021-03-02 9:26 ` [PATCH v13 06/10] iommu: Add a page fault handler Jean-Philippe Brucker
2021-03-02 23:59 ` Jacob Pan
2021-03-23 10:50 ` Jean-Philippe Brucker
2021-03-03 5:27 ` Lu Baolu
2021-03-23 10:51 ` Jean-Philippe Brucker
2021-03-03 5:57 ` Raj, Ashok
2021-03-23 10:53 ` Jean-Philippe Brucker
2021-03-02 9:26 ` [PATCH v13 07/10] iommu/arm-smmu-v3: Maintain a SID->device structure Jean-Philippe Brucker
2021-03-02 12:24 ` Keqian Zhu
2021-03-25 17:48 ` Will Deacon
2021-03-26 9:49 ` Jean-Philippe Brucker
2021-03-02 9:26 ` [PATCH v13 08/10] dt-bindings: document stall property for IOMMU masters Jean-Philippe Brucker
2021-03-02 9:26 ` [PATCH v13 09/10] ACPI/IORT: Enable stall support for platform devices Jean-Philippe Brucker
2021-03-02 9:26 ` [PATCH v13 10/10] iommu/arm-smmu-v3: Add " Jean-Philippe Brucker
2021-03-19 17:40 ` Auger Eric
2021-03-26 9:52 ` Auger Eric
2021-03-18 0:25 ` [PATCH v13 00/10] iommu: I/O page faults for SMMUv3 Krishna Reddy
2021-03-30 17:17 ` Jean-Philippe Brucker
2021-04-01 8:57 ` Will Deacon
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