# HG changeset patch
# User Wei Wang <wei.wang2@xxxxxxx>
# Date 1320748013 -3600
# Node ID 452d9143687f826a30d0e56b7ba3b9783fb6bf24
# Parent 00ab8c0299e2a02618f8e83225db7d61c165f039
amd iommu: enable ats devices
Signed-off-by: Wei Wang <wei.wang2@xxxxxxx>
Committed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
diff -r 00ab8c0299e2 -r 452d9143687f xen/drivers/passthrough/amd/iommu_map.c
--- a/xen/drivers/passthrough/amd/iommu_map.c Tue Nov 08 11:26:13 2011 +0100
+++ b/xen/drivers/passthrough/amd/iommu_map.c Tue Nov 08 11:26:53 2011 +0100
@@ -370,6 +370,17 @@
dte[0] = entry;
}
+void iommu_dte_set_iotlb(u32 *dte, u8 i)
+{
+ u32 entry;
+
+ entry = dte[3];
+ set_field_in_reg_u32(!!i, entry,
+ IOMMU_DEV_TABLE_IOTLB_SUPPORT_MASK,
+ IOMMU_DEV_TABLE_IOTLB_SUPPORT_SHIFT, &entry);
+ dte[3] = entry;
+}
+
void __init amd_iommu_set_intremap_table(
u32 *dte, u64 intremap_ptr, u8 int_valid)
{
diff -r 00ab8c0299e2 -r 452d9143687f xen/drivers/passthrough/amd/pci_amd_iommu.c
--- a/xen/drivers/passthrough/amd/pci_amd_iommu.c Tue Nov 08 11:26:13
2011 +0100
+++ b/xen/drivers/passthrough/amd/pci_amd_iommu.c Tue Nov 08 11:26:53
2011 +0100
@@ -25,6 +25,7 @@
#include <asm/hvm/iommu.h>
#include <asm/amd-iommu.h>
#include <asm/hvm/svm/amd-iommu-proto.h>
+#include "../ats.h"
struct amd_iommu *find_iommu_for_device(int seg, int bdf)
{
@@ -86,6 +87,9 @@
void *dte;
unsigned long flags;
int req_id, valid = 1;
+ int dte_i = 0;
+ u8 bus = PCI_BUS(bdf);
+ u8 devfn = PCI_DEVFN2(bdf);
struct hvm_iommu *hd = domain_hvm_iommu(domain);
@@ -94,6 +98,9 @@
if ( iommu_passthrough && (domain->domain_id == 0) )
valid = 0;
+ if ( ats_enabled )
+ dte_i = 1;
+
/* get device-table entry */
req_id = get_dma_requestor_id(iommu->seg, bdf);
dte = iommu->dev_table.buffer + (req_id * IOMMU_DEV_TABLE_ENTRY_SIZE);
@@ -107,6 +114,10 @@
(u32 *)dte, page_to_maddr(hd->root_table), hd->domain_id,
hd->paging_mode, valid);
+ if ( pci_ats_device(iommu->seg, bus, devfn) &&
+ iommu->iotlb_support )
+ iommu_dte_set_iotlb((u32 *)dte, dte_i);
+
invalidate_dev_table_entry(iommu, req_id);
flush_command_buffer(iommu);
@@ -118,11 +129,27 @@
}
spin_unlock_irqrestore(&iommu->lock, flags);
+
+ ASSERT(spin_is_locked(&pcidevs_lock));
+
+ if ( pci_ats_device(iommu->seg, bus, devfn) &&
+ !pci_ats_enabled(iommu->seg, bus, devfn) )
+ {
+ struct pci_dev *pdev;
+
+ enable_ats_device(iommu->seg, bus, devfn);
+
+ ASSERT(spin_is_locked(&pcidevs_lock));
+ pdev = pci_get_pdev(iommu->seg, bus, devfn);
+
+ ASSERT( pdev != NULL );
+ amd_iommu_flush_iotlb(pdev, INV_IOMMU_ALL_PAGES_ADDRESS, 0);
+ }
}
static void __init amd_iommu_setup_dom0_device(struct pci_dev *pdev)
{
- int bdf = (pdev->bus << 8) | pdev->devfn;
+ int bdf = PCI_BDF2(pdev->bus, pdev->devfn);
struct amd_iommu *iommu = find_iommu_for_device(pdev->seg, bdf);
if ( likely(iommu != NULL) )
@@ -261,12 +288,14 @@
setup_dom0_pci_devices(d, amd_iommu_setup_dom0_device);
}
-static void amd_iommu_disable_domain_device(
- struct domain *domain, struct amd_iommu *iommu, int bdf)
+void amd_iommu_disable_domain_device(struct domain *domain,
+ struct amd_iommu *iommu, int bdf)
{
void *dte;
unsigned long flags;
int req_id;
+ u8 bus = PCI_BUS(bdf);
+ u8 devfn = PCI_DEVFN2(bdf);
BUG_ON ( iommu->dev_table.buffer == NULL );
req_id = get_dma_requestor_id(iommu->seg, bdf);
@@ -276,6 +305,11 @@
if ( is_translation_valid((u32 *)dte) )
{
disable_translation((u32 *)dte);
+
+ if ( pci_ats_device(iommu->seg, bus, devfn) &&
+ iommu->iotlb_support )
+ iommu_dte_set_iotlb((u32 *)dte, 0);
+
invalidate_dev_table_entry(iommu, req_id);
flush_command_buffer(iommu);
AMD_IOMMU_DEBUG("Disable: device id = 0x%04x, "
@@ -284,6 +318,12 @@
domain_hvm_iommu(domain)->paging_mode);
}
spin_unlock_irqrestore(&iommu->lock, flags);
+
+ ASSERT(spin_is_locked(&pcidevs_lock));
+
+ if ( pci_ats_device(iommu->seg, bus, devfn) &&
+ pci_ats_enabled(iommu->seg, bus, devfn) )
+ disable_ats_device(iommu->seg, bus, devfn);
}
static int reassign_device( struct domain *source, struct domain *target,
@@ -299,7 +339,7 @@
if ( !pdev )
return -ENODEV;
- bdf = (bus << 8) | devfn;
+ bdf = PCI_BDF2(bus, devfn);
iommu = find_iommu_for_device(seg, bdf);
if ( !iommu )
{
@@ -421,7 +461,7 @@
if ( !pdev->domain )
return -EINVAL;
- bdf = (pdev->bus << 8) | pdev->devfn;
+ bdf = PCI_BDF2(pdev->bus, pdev->devfn);
iommu = find_iommu_for_device(pdev->seg, bdf);
if ( !iommu )
{
@@ -443,7 +483,7 @@
if ( !pdev->domain )
return -EINVAL;
- bdf = (pdev->bus << 8) | pdev->devfn;
+ bdf = PCI_BDF2(pdev->bus, pdev->devfn);
iommu = find_iommu_for_device(pdev->seg, bdf);
if ( !iommu )
{
diff -r 00ab8c0299e2 -r 452d9143687f
xen/include/asm-x86/hvm/svm/amd-iommu-proto.h
--- a/xen/include/asm-x86/hvm/svm/amd-iommu-proto.h Tue Nov 08 11:26:13
2011 +0100
+++ b/xen/include/asm-x86/hvm/svm/amd-iommu-proto.h Tue Nov 08 11:26:53
2011 +0100
@@ -75,6 +75,7 @@
u32 *dte, u64 intremap_ptr, u8 int_valid);
void amd_iommu_set_root_page_table(
u32 *dte, u64 root_ptr, u16 domain_id, u8 paging_mode, u8 valid);
+void iommu_dte_set_iotlb(u32 *dte, u8 i);
void invalidate_dev_table_entry(struct amd_iommu *iommu, u16 devic_id);
/* send cmd to iommu */
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