diff options
Diffstat (limited to 'arch/x86_64/kernel/pci-calgary.c')
| -rw-r--r-- | arch/x86_64/kernel/pci-calgary.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86_64/kernel/pci-calgary.c b/arch/x86_64/kernel/pci-calgary.c index 8a1e4f3..0ddf29d 100644 --- a/arch/x86_64/kernel/pci-calgary.c +++ b/arch/x86_64/kernel/pci-calgary.c @@ -43,6 +43,12 @@ #include <asm/dma.h> #include <asm/rio.h> +#ifdef CONFIG_CALGARY_IOMMU_ENABLED_BY_DEFAULT +int use_calgary __read_mostly = 1; +#else +int use_calgary __read_mostly = 0; +#endif /* CONFIG_CALGARY_DEFAULT_ENABLED */ + #define PCI_DEVICE_ID_IBM_CALGARY 0x02a1 #define PCI_VENDOR_DEVICE_ID_CALGARY \ (PCI_VENDOR_ID_IBM | PCI_DEVICE_ID_IBM_CALGARY << 16) @@ -1061,6 +1067,9 @@ void __init detect_calgary(void) if (swiotlb || no_iommu || iommu_detected) return; + if (!use_calgary) + return; + if (!early_pci_allowed()) return; |