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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] vt-d: Clean up iommu code.
# HG changeset patch
# User Keir Fraser <keir@xxxxxxxxxxxxx>
# Date 1191944562 -3600
# Node ID 56f158c8644b0f9423cc17177eff9df5f1be381c
# Parent dcab07f0776de86c71a60f2afc2a9a10ad84c553
vt-d: Clean up iommu code.
Signed-off-by: Weidong Han <weidong.han@xxxxxxxxx>
---
xen/arch/x86/hvm/vmx/vtd/intel-iommu.c | 78 ++++++++++++++++-----------------
1 files changed, 39 insertions(+), 39 deletions(-)
diff -r dcab07f0776d -r 56f158c8644b xen/arch/x86/hvm/vmx/vtd/intel-iommu.c
--- a/xen/arch/x86/hvm/vmx/vtd/intel-iommu.c Tue Oct 09 16:06:50 2007 +0100
+++ b/xen/arch/x86/hvm/vmx/vtd/intel-iommu.c Tue Oct 09 16:42:42 2007 +0100
@@ -412,14 +412,8 @@ static int __iommu_flush_iotlb(struct io
BUG();
}
/* Note: set drain read/write */
-#if 0
- /*
- * This is probably to be super secure.. Looks like we can
- * ignore it without any impact.
- */
if ( cap_read_drain(iommu->cap) )
val |= DMA_TLB_READ_DRAIN;
-#endif
if ( cap_write_drain(iommu->cap) )
val |= DMA_TLB_WRITE_DRAIN;
@@ -641,8 +635,11 @@ static int iommu_set_root_entry(struct i
unsigned long flags;
if ( iommu == NULL )
+ {
gdprintk(XENLOG_ERR VTDPREFIX,
"iommu_set_root_entry: iommu == NULL\n");
+ return -EINVAL;
+ }
if ( unlikely(!iommu->root_entry) )
{
@@ -1156,8 +1153,9 @@ static int domain_context_mapping(
u32 type;
type = pdev_type(pdev);
- if ( type == DEV_TYPE_PCI_BRIDGE )
- {
+ switch ( type )
+ {
+ case DEV_TYPE_PCI_BRIDGE:
sec_bus = read_pci_config_byte(
pdev->bus, PCI_SLOT(pdev->devfn),
PCI_FUNC(pdev->devfn), PCI_SECONDARY_BUS);
@@ -1181,20 +1179,15 @@ static int domain_context_mapping(
pdev->bus, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn),
sec_bus, sub_bus);
}
- }
-
- if ( type == DEV_TYPE_PCIe_ENDPOINT )
- {
+ break;
+ case DEV_TYPE_PCIe_ENDPOINT:
gdprintk(XENLOG_INFO VTDPREFIX,
"domain_context_mapping:PCIe : bdf = %x:%x:%x\n",
pdev->bus, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
ret = domain_context_mapping_one(domain, iommu,
- (u8)(pdev->bus), (u8) (pdev->devfn));
- }
-
- /* PCI devices */
- if ( type == DEV_TYPE_PCI )
- {
+ (u8)(pdev->bus), (u8)(pdev->devfn));
+ break;
+ case DEV_TYPE_PCI:
gdprintk(XENLOG_INFO VTDPREFIX,
"domain_context_mapping:PCI: bdf = %x:%x:%x\n",
pdev->bus, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
@@ -1202,14 +1195,14 @@ static int domain_context_mapping(
if ( pdev->bus == 0 )
{
ret = domain_context_mapping_one(
- domain, iommu, (u8)(pdev->bus), (u8) (pdev->devfn));
+ domain, iommu, (u8)(pdev->bus), (u8)(pdev->devfn));
}
else
{
if ( bus2bridge[pdev->bus].bus != 0 )
gdprintk(XENLOG_ERR VTDPREFIX,
"domain_context_mapping:bus2bridge"
- "[pdev->bus].bus==0\n");
+ "[pdev->bus].bus != 0\n");
ret = domain_context_mapping_one(
domain, iommu,
@@ -1229,6 +1222,13 @@ static int domain_context_mapping(
}
}
}
+ break;
+ default:
+ gdprintk(XENLOG_ERR VTDPREFIX,
+ "domain_context_mapping:unknown type : bdf = %x:%x:%x\n",
+ pdev->bus, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
+ ret = -EINVAL;
+ break;
}
return ret;
@@ -1290,8 +1290,9 @@ static int domain_context_unmap(
u32 type;
type = pdev_type(pdev);
- if ( type == DEV_TYPE_PCI_BRIDGE )
- {
+ switch ( type )
+ {
+ case DEV_TYPE_PCI_BRIDGE:
sec_bus = read_pci_config_byte(
pdev->bus, PCI_SLOT(pdev->devfn),
PCI_FUNC(pdev->devfn), PCI_SECONDARY_BUS);
@@ -1304,20 +1305,15 @@ static int domain_context_unmap(
"sec_bus=%x sub_bus=%x\n",
pdev->bus, PCI_SLOT(pdev->devfn),
PCI_FUNC(pdev->devfn), sec_bus, sub_bus);
- }
-
- if ( type == DEV_TYPE_PCIe_ENDPOINT )
- {
+ break;
+ case DEV_TYPE_PCIe_ENDPOINT:
gdprintk(XENLOG_INFO VTDPREFIX,
"domain_context_unmap:PCIe : bdf = %x:%x:%x\n",
pdev->bus, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
ret = domain_context_unmap_one(domain, iommu,
- (u8)(pdev->bus), (u8) (pdev->devfn));
- }
-
- /* PCI devices */
- if ( type == DEV_TYPE_PCI )
- {
+ (u8)(pdev->bus), (u8)(pdev->devfn));
+ break;
+ case DEV_TYPE_PCI:
gdprintk(XENLOG_INFO VTDPREFIX,
"domain_context_unmap:PCI: bdf = %x:%x:%x\n",
pdev->bus, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
@@ -1325,14 +1321,14 @@ static int domain_context_unmap(
{
ret = domain_context_unmap_one(
domain, iommu,
- (u8)(pdev->bus), (u8) (pdev->devfn));
+ (u8)(pdev->bus), (u8)(pdev->devfn));
}
else
{
if ( bus2bridge[pdev->bus].bus != 0 )
gdprintk(XENLOG_INFO VTDPREFIX,
"domain_context_mapping:"
- "bus2bridge[pdev->bus].bus==0\n");
+ "bus2bridge[pdev->bus].bus != 0\n");
ret = domain_context_unmap_one(domain, iommu,
(u8)(bus2bridge[pdev->bus].bus),
@@ -1351,6 +1347,13 @@ static int domain_context_unmap(
}
}
}
+ break;
+ default:
+ gdprintk(XENLOG_ERR VTDPREFIX,
+ "domain_context_unmap:unknown type: bdf = %x:%x:%x\n",
+ pdev->bus, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
+ ret = -EINVAL;
+ break;
}
return ret;
@@ -1447,6 +1450,8 @@ void iommu_domain_teardown(struct domain
if ( pgd[0].val != 0 )
free_xenheap_page((void*)maddr_to_virt(
dma_pte_addr(pgd[0])));
+
+ free_xenheap_page((void *)hd->pgd);
}
break;
default:
@@ -1600,11 +1605,6 @@ void iommu_flush(struct domain *d, dma_a
}
iommu_flush_cache_entry(iommu, pte);
-}
-
-int prepare_device(struct domain *domain, struct pci_dev dev)
-{
- return 0;
}
static int iommu_prepare_rmrr_dev(
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