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authorWeidong Han <weidong.han@intel.com>2008-12-08 09:17:15 +0800
committerJoerg Roedel <joerg.roedel@amd.com>2009-01-03 14:02:17 +0100
commit3b5410e735b093060b96664230c6f9f4fe80b251 (patch)
treec22013c6b7a8524ff786243a6be89a81dbab7b2d /drivers/pci/intel-iommu.c
parentd71a2f33ac466a437f316e7bb024d0175a7f3cd9 (diff)
downloadblackbird-op-linux-3b5410e735b093060b96664230c6f9f4fe80b251.tar.gz
blackbird-op-linux-3b5410e735b093060b96664230c6f9f4fe80b251.zip
change P2P domain flags
Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'drivers/pci/intel-iommu.c')
-rw-r--r--drivers/pci/intel-iommu.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index 65aa1d427f43..22ad8851b3e0 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -200,6 +200,9 @@ static inline bool dma_pte_present(struct dma_pte *pte)
return (pte->val & 3) != 0;
}
+/* devices under the same p2p bridge are owned in one domain */
+#define DOMAIN_FLAG_P2P_MULTIPLE_DEVICES (1 < 0)
+
struct dmar_domain {
int id; /* domain id */
struct intel_iommu *iommu; /* back pointer to owning iommu */
@@ -214,8 +217,7 @@ struct dmar_domain {
/* adjusted guest address width, 0 is level 2 30-bit */
int agaw;
-#define DOMAIN_FLAG_MULTIPLE_DEVICES 1
- int flags;
+ int flags; /* flags to find out type of domain */
};
/* PCI domain-device relationship */
@@ -1574,7 +1576,7 @@ static struct dmar_domain *get_domain_for_dev(struct pci_dev *pdev, int gaw)
info->dev = NULL;
info->domain = domain;
/* This domain is shared by devices under p2p bridge */
- domain->flags |= DOMAIN_FLAG_MULTIPLE_DEVICES;
+ domain->flags |= DOMAIN_FLAG_P2P_MULTIPLE_DEVICES;
/* pcie-to-pci bridge already has a domain, uses it */
found = NULL;
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