[tip:x86/iommu] x86, swiotlb: Make SWIOTLB use IOMMU_INIT_* macros.

[tip-bot for Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>]

Commit-ID:  c116c5457c46edb767df6f4e36d4905e3514ad37
Gitweb:     http://git.kernel.org/tip/c116c5457c46edb767df6f4e36d4905e3514ad37
Author:     Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
AuthorDate: Thu, 26 Aug 2010 13:58:00 -0400
Committer:  H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Thu, 26 Aug 2010 15:13:37 -0700

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>
---
 arch/x86/kernel/pci-swiotlb.c |   11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/pci-swiotlb.c b/arch/x86/kernel/pci-swiotlb.c
index c7a72fa..8f972cb 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)
 {