Commit-ID: d7b9f7be216b04ff9d108f856bc03d96e7b3439c
Gitweb: http://git.kernel.org/tip/d7b9f7be216b04ff9d108f856bc03d96e7b3439c
Author: FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx>
AuthorDate: Tue, 10 Nov 2009 19:46:13 +0900
Committer: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Tue, 10 Nov 2009 12:31:15 +0100
x86: Calgary: Convert detect_calgary() to use iommu_init hook
This changes detect_calgary() to set init_calgary() to
iommu_init hook if detect_calgary() finds the Calgary IOMMU.
We can kill the code to check if we found the IOMMU in
init_calgary() since detect_calgary() sets init_calgary() only
when it found the IOMMU.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx>
Acked-by: Muli Ben-Yehuda <muli@xxxxxxxxxx>
Cc: chrisw@xxxxxxxxxxxx
Cc: dwmw2@xxxxxxxxxxxxx
Cc: joerg.roedel@xxxxxxx
LKML-Reference: <1257849980-22640-3-git-send-email-fujita.tomonori@xxxxxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
arch/x86/include/asm/calgary.h | 2 --
arch/x86/kernel/pci-calgary_64.c | 11 +++++------
arch/x86/kernel/pci-dma.c | 2 --
3 files changed, 5 insertions(+), 10 deletions(-)
diff --git a/arch/x86/include/asm/calgary.h b/arch/x86/include/asm/calgary.h
index b03bedb..0918654 100644
--- a/arch/x86/include/asm/calgary.h
+++ b/arch/x86/include/asm/calgary.h
@@ -62,10 +62,8 @@ struct cal_chipset_ops {
extern int use_calgary;
#ifdef CONFIG_CALGARY_IOMMU
-extern int calgary_iommu_init(void);
extern void detect_calgary(void);
#else
-static inline int calgary_iommu_init(void) { return 1; }
static inline void detect_calgary(void) { return; }
#endif
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
index 971a3be..47bd419 100644
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -46,6 +46,7 @@
#include <asm/dma.h>
#include <asm/rio.h>
#include <asm/bios_ebda.h>
+#include <asm/x86_init.h>
#ifdef CONFIG_CALGARY_IOMMU_ENABLED_BY_DEFAULT
int use_calgary __read_mostly = 1;
@@ -1344,6 +1345,8 @@ static void __init get_tce_space_from_tar(void)
return;
}
+int __init calgary_iommu_init(void);
+
void __init detect_calgary(void)
{
int bus;
@@ -1445,6 +1448,8 @@ void __init detect_calgary(void)
/* swiotlb for devices that aren't behind the Calgary. */
if (max_pfn > MAX_DMA32_PFN)
swiotlb = 1;
+
+ x86_init.iommu.iommu_init = calgary_iommu_init;
}
return;
@@ -1461,12 +1466,6 @@ int __init calgary_iommu_init(void)
{
int ret;
- if (no_iommu || (swiotlb && !calgary_detected))
- return -ENODEV;
-
- if (!calgary_detected)
- return -ENODEV;
-
/* ok, we're trying to use Calgary - let's roll */
printk(KERN_INFO "PCI-DMA: Using Calgary IOMMU\n");
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index a13478d..0224da8 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -294,8 +294,6 @@ static int __init pci_iommu_init(void)
x86_init.iommu.iommu_init();
- calgary_iommu_init();
-
intel_iommu_init();
amd_iommu_init();
--
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