x86: move initialization functions to pci-dma.c

initcalls that triggers the various possibiities for
dma subsys are moved to pci-dma.c.
Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/kernel/pci-dma.c

 #include <linux/dma-mapping.h>
+#include <linux/dmar.h>
+
+#include <asm/gart.h>
+#include <asm/calgary.h>
 
 const struct dma_mapping_ops *dma_ops;
 EXPORT_SYMBOL(dma_ops);
@@ -22,4 +26,25 @@ int dma_set_mask(struct device *dev, u64 mask)
 }
 EXPORT_SYMBOL(dma_set_mask);
 
+static int __init pci_iommu_init(void)
+{
+#ifdef CONFIG_CALGARY_IOMMU
+	calgary_iommu_init();
+#endif
+
+	intel_iommu_init();
+
+#ifdef CONFIG_GART_IOMMU
+	gart_iommu_init();
+#endif
 
+	no_iommu_init();
+	return 0;
+}
+
+void pci_iommu_shutdown(void)
+{
+	gart_iommu_shutdown();
+}
+/* Must execute after PCI subsystem */
+fs_initcall(pci_iommu_init);

arch/x86/kernel/pci-dma_64.c

@@ -339,27 +339,6 @@ void __init pci_iommu_alloc(void)
 #endif
 }
 
-static int __init pci_iommu_init(void)
-{
-#ifdef CONFIG_CALGARY_IOMMU
-	calgary_iommu_init();
-#endif
-
-	intel_iommu_init();
-
-#ifdef CONFIG_GART_IOMMU
-	gart_iommu_init();
-#endif
-
-	no_iommu_init();
-	return 0;
-}
-
-void pci_iommu_shutdown(void)
-{
-	gart_iommu_shutdown();
-}
-
 #ifdef CONFIG_PCI
 /* Many VIA bridges seem to corrupt data for DAC. Disable it here */
 
@@ -372,5 +351,3 @@ static __devinit void via_no_dac(struct pci_dev *dev)
 }
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_ANY_ID, via_no_dac);
 #endif
-/* Must execute after PCI subsystem */
-fs_initcall(pci_iommu_init);