linux-kernel - [PATCH v4 08/12] iommu/vt-d: Pass pasid table to context mapping

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Message-Id: <20181105053151.7173-9-baolu.lu@linux.intel.com>
Date:   Mon,  5 Nov 2018 13:31:47 +0800
From:   Lu Baolu <baolu.lu@...ux.intel.com>
To:     Joerg Roedel <joro@...tes.org>,
        David Woodhouse <dwmw2@...radead.org>
Cc:     ashok.raj@...el.com, sanjay.k.kumar@...el.com,
        jacob.jun.pan@...el.com, kevin.tian@...el.com, yi.l.liu@...el.com,
        yi.y.sun@...el.com, peterx@...hat.com,
        Jean-Philippe Brucker <jean-philippe.brucker@....com>,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>
Subject: [PATCH v4 08/12] iommu/vt-d: Pass pasid table to context mapping

So that the pasid related info, such as the pasid table and the
maximum of pasid could be used during setting up scalable mode
context.

Cc: Ashok Raj <ashok.raj@...el.com>
Cc: Jacob Pan <jacob.jun.pan@...ux.intel.com>
Cc: Kevin Tian <kevin.tian@...el.com>
Cc: Liu Yi L <yi.l.liu@...el.com>
Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
Reviewed-by: Ashok Raj <ashok.raj@...el.com>
Reviewed-by: Kevin Tian <kevin.tian@...el.com>
---
 drivers/iommu/intel-iommu.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 6d2ee8639e4c..a761c0aa3438 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -1917,6 +1917,7 @@ static void domain_exit(struct dmar_domain *domain)
 
 static int domain_context_mapping_one(struct dmar_domain *domain,
 				      struct intel_iommu *iommu,
+				      struct pasid_table *table,
 				      u8 bus, u8 devfn)
 {
 	u16 did = domain->iommu_did[iommu->seq_id];
@@ -2039,6 +2040,7 @@ static int domain_context_mapping_one(struct dmar_domain *domain,
 struct domain_context_mapping_data {
 	struct dmar_domain *domain;
 	struct intel_iommu *iommu;
+	struct pasid_table *table;
 };
 
 static int domain_context_mapping_cb(struct pci_dev *pdev,
@@ -2047,25 +2049,31 @@ static int domain_context_mapping_cb(struct pci_dev *pdev,
 	struct domain_context_mapping_data *data = opaque;
 
 	return domain_context_mapping_one(data->domain, data->iommu,
-					  PCI_BUS_NUM(alias), alias & 0xff);
+					  data->table, PCI_BUS_NUM(alias),
+					  alias & 0xff);
 }
 
 static int
 domain_context_mapping(struct dmar_domain *domain, struct device *dev)
 {
+	struct domain_context_mapping_data data;
+	struct pasid_table *table;
 	struct intel_iommu *iommu;
 	u8 bus, devfn;
-	struct domain_context_mapping_data data;
 
 	iommu = device_to_iommu(dev, &bus, &devfn);
 	if (!iommu)
 		return -ENODEV;
 
+	table = intel_pasid_get_table(dev);
+
 	if (!dev_is_pci(dev))
-		return domain_context_mapping_one(domain, iommu, bus, devfn);
+		return domain_context_mapping_one(domain, iommu, table,
+						  bus, devfn);
 
 	data.domain = domain;
 	data.iommu = iommu;
+	data.table = table;
 
 	return pci_for_each_dma_alias(to_pci_dev(dev),
 				      &domain_context_mapping_cb, &data);
-- 
2.17.1