x86, swiotlb: Make SWIOTLB use IOMMU_INIT_* macros.

We utilize the IOMMU_INIT macros to create this dependency:

       [pci_xen_swiotlb_detect]
                 |
       [pci_swiotlb_detect_override]
                 |
       [pci_swiotlb_detect_4gb]

And set the SWIOTLB IOMMU_INIT to utilize 'pci_swiotlb_init'
for .init and 'pci_swiotlb_late_init' for .late_init.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
LKML-Reference: <1282845485-8991-6-git-send-email-konrad.wilk@oracle.com>
CC: Fujita Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

1 files changed, 10 insertions, 1 deletions

diff --git a/arch/x86/kernel/pci-swiotlb.c b/arch/x86/kernel/pci-swiotlb.c
index c7a72faeb146..8f972cbddef0 100644
--- a/arch/x86/kernel/pci-swiotlb.c
+++ b/arch/x86/kernel/pci-swiotlb.c
@@ -10,7 +10,8 @@
 #include <asm/iommu.h>
 #include <asm/swiotlb.h>
 #include <asm/dma.h>
-
+#include <asm/xen/swiotlb-xen.h>
+#include <asm/iommu_table.h>
 int swiotlb __read_mostly;
 
 static void *x86_swiotlb_alloc_coherent(struct device *hwdev, size_t size,
@@ -55,6 +56,10 @@ int __init pci_swiotlb_detect_override(void)
 
         return use_swiotlb;
 }
+IOMMU_INIT_FINISH(pci_swiotlb_detect_override,
+                  pci_xen_swiotlb_detect,
+                  pci_swiotlb_init,
+                  pci_swiotlb_late_init);
 
 /*
  * if 4GB or more detected (and iommu=off not set) return 1
@@ -69,6 +74,10 @@ int __init pci_swiotlb_detect_4gb(void)
 #endif
         return swiotlb;
 }
+IOMMU_INIT(pci_swiotlb_detect_4gb,
+           pci_swiotlb_detect_override,
+           pci_swiotlb_init,
+           pci_swiotlb_late_init);
 
 void __init pci_swiotlb_init(void)
 {