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Diffstat (limited to 'arch/x86/kernel/pci-dma.c')
-rw-r--r--arch/x86/kernel/pci-dma.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 4b7e3d8b01dd..9f07cfcbd3a5 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -13,6 +13,7 @@
#include <asm/calgary.h>
#include <asm/amd_iommu.h>
#include <asm/x86_init.h>
+#include <asm/xen/swiotlb-xen.h>
static int forbid_dac __read_mostly;
@@ -132,7 +133,7 @@ void __init pci_iommu_alloc(void)
/* free the range so iommu could get some range less than 4G */
dma32_free_bootmem();
- if (pci_swiotlb_detect())
+ if (pci_xen_swiotlb_detect() || pci_swiotlb_detect())
goto out;
gart_iommu_hole_init();
@@ -144,6 +145,8 @@ void __init pci_iommu_alloc(void)
/* needs to be called after gart_iommu_hole_init */
amd_iommu_detect();
out:
+ pci_xen_swiotlb_init();
+
pci_swiotlb_init();
}
@@ -296,7 +299,7 @@ static int __init pci_iommu_init(void)
#endif
x86_init.iommu.iommu_init();
- if (swiotlb) {
+ if (swiotlb || xen_swiotlb) {
printk(KERN_INFO "PCI-DMA: "
"Using software bounce buffering for IO (SWIOTLB)\n");
swiotlb_print_info();
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