Commit 1c48db44 authored by Jacob Pan's avatar Jacob Pan Committed by Joerg Roedel

iommu/vt-d: Fix dev iotlb pfsid use

PFSID should be used in the invalidation descriptor for flushing
device IOTLBs on SRIOV VFs.
Signed-off-by: default avatarJacob Pan <jacob.jun.pan@linux.intel.com>
Cc: stable@vger.kernel.org
Cc: "Ashok Raj" <ashok.raj@intel.com>
Cc: "Lu Baolu" <baolu.lu@linux.intel.com>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 0f725561
...@@ -1339,8 +1339,8 @@ void qi_flush_iotlb(struct intel_iommu *iommu, u16 did, u64 addr, ...@@ -1339,8 +1339,8 @@ void qi_flush_iotlb(struct intel_iommu *iommu, u16 did, u64 addr,
qi_submit_sync(&desc, iommu); qi_submit_sync(&desc, iommu);
} }
void qi_flush_dev_iotlb(struct intel_iommu *iommu, u16 sid, u16 qdep, void qi_flush_dev_iotlb(struct intel_iommu *iommu, u16 sid, u16 pfsid,
u64 addr, unsigned mask) u16 qdep, u64 addr, unsigned mask)
{ {
struct qi_desc desc; struct qi_desc desc;
...@@ -1355,7 +1355,7 @@ void qi_flush_dev_iotlb(struct intel_iommu *iommu, u16 sid, u16 qdep, ...@@ -1355,7 +1355,7 @@ void qi_flush_dev_iotlb(struct intel_iommu *iommu, u16 sid, u16 qdep,
qdep = 0; qdep = 0;
desc.low = QI_DEV_IOTLB_SID(sid) | QI_DEV_IOTLB_QDEP(qdep) | desc.low = QI_DEV_IOTLB_SID(sid) | QI_DEV_IOTLB_QDEP(qdep) |
QI_DIOTLB_TYPE; QI_DIOTLB_TYPE | QI_DEV_IOTLB_PFSID(pfsid);
qi_submit_sync(&desc, iommu); qi_submit_sync(&desc, iommu);
} }
......
...@@ -1475,6 +1475,20 @@ static void iommu_enable_dev_iotlb(struct device_domain_info *info) ...@@ -1475,6 +1475,20 @@ static void iommu_enable_dev_iotlb(struct device_domain_info *info)
return; return;
pdev = to_pci_dev(info->dev); pdev = to_pci_dev(info->dev);
/* For IOMMU that supports device IOTLB throttling (DIT), we assign
* PFSID to the invalidation desc of a VF such that IOMMU HW can gauge
* queue depth at PF level. If DIT is not set, PFSID will be treated as
* reserved, which should be set to 0.
*/
if (!ecap_dit(info->iommu->ecap))
info->pfsid = 0;
else {
struct pci_dev *pf_pdev;
/* pdev will be returned if device is not a vf */
pf_pdev = pci_physfn(pdev);
info->pfsid = PCI_DEVID(pf_pdev->bus->number, pf_pdev->devfn);
}
#ifdef CONFIG_INTEL_IOMMU_SVM #ifdef CONFIG_INTEL_IOMMU_SVM
/* The PCIe spec, in its wisdom, declares that the behaviour of /* The PCIe spec, in its wisdom, declares that the behaviour of
...@@ -1540,7 +1554,8 @@ static void iommu_flush_dev_iotlb(struct dmar_domain *domain, ...@@ -1540,7 +1554,8 @@ static void iommu_flush_dev_iotlb(struct dmar_domain *domain,
sid = info->bus << 8 | info->devfn; sid = info->bus << 8 | info->devfn;
qdep = info->ats_qdep; qdep = info->ats_qdep;
qi_flush_dev_iotlb(info->iommu, sid, qdep, addr, mask); qi_flush_dev_iotlb(info->iommu, sid, info->pfsid,
qdep, addr, mask);
} }
spin_unlock_irqrestore(&device_domain_lock, flags); spin_unlock_irqrestore(&device_domain_lock, flags);
} }
......
...@@ -455,9 +455,8 @@ extern void qi_flush_context(struct intel_iommu *iommu, u16 did, u16 sid, ...@@ -455,9 +455,8 @@ extern void qi_flush_context(struct intel_iommu *iommu, u16 did, u16 sid,
u8 fm, u64 type); u8 fm, u64 type);
extern void qi_flush_iotlb(struct intel_iommu *iommu, u16 did, u64 addr, extern void qi_flush_iotlb(struct intel_iommu *iommu, u16 did, u64 addr,
unsigned int size_order, u64 type); unsigned int size_order, u64 type);
extern void qi_flush_dev_iotlb(struct intel_iommu *iommu, u16 sid, u16 qdep, extern void qi_flush_dev_iotlb(struct intel_iommu *iommu, u16 sid, u16 pfsid,
u64 addr, unsigned mask); u16 qdep, u64 addr, unsigned mask);
extern int qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu); extern int qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu);
extern int dmar_ir_support(void); extern int dmar_ir_support(void);
......
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