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x86: remove ifdef CONFIG_GART_IOMMU in pci-dma.c

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Our way to handle gart_* functions for CONFIG_GART_IOMMU and
!CONFIG_GART_IOMMU cases is inconsistent.

We have some dummy gart_* functions in !CONFIG_GART_IOMMU case and
also use ifdef CONFIG_GART_IOMMU tricks in pci-dma.c to call some
gart_* functions in only CONFIG_GART_IOMMU case.

This patch removes ifdef CONFIG_GART_IOMMU in pci-dma.c and always use
dummy gart_* functions in iommu.h.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
FUJITA Tomonori 2008-07-11 10:23:43 +09:00 • committed by Ingo Molnar
parent 46a7fa270a
commit ac7ded2adb
2 changed files with 9 additions and 7 deletions
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6
arch/x86/kernel/pci-dma.c
View file

@ -114,9 +114,7 @@ void __init pci_iommu_alloc(void)
* The order of these functions is important for * The order of these functions is important for
* fall-back/fail-over reasons * fall-back/fail-over reasons
*/ */
#ifdef CONFIG_GART_IOMMU
gart_iommu_hole_init(); gart_iommu_hole_init();
#endif
#ifdef CONFIG_CALGARY_IOMMU #ifdef CONFIG_CALGARY_IOMMU
detect_calgary(); detect_calgary();
@ -184,9 +182,7 @@ static __init int iommu_setup(char *p)
swiotlb = 1; swiotlb = 1;
#endif #endif
#ifdef CONFIG_GART_IOMMU
gart_parse_options(p); gart_parse_options(p);
#endif
#ifdef CONFIG_CALGARY_IOMMU #ifdef CONFIG_CALGARY_IOMMU
if (!strncmp(p, "calgary", 7)) if (!strncmp(p, "calgary", 7))
@ -508,9 +504,7 @@ static int __init pci_iommu_init(void)
amd_iommu_init(); amd_iommu_init();
#ifdef CONFIG_GART_IOMMU
gart_iommu_init(); gart_iommu_init();
#endif
no_iommu_init(); no_iommu_init();
return 0; return 0;

10
include/asm-x86/iommu.h
View file

@ -25,10 +25,18 @@ extern void gart_iommu_hole_init(void);
static inline void early_gart_iommu_check(void) static inline void early_gart_iommu_check(void)
{ {
} }
static inline void gart_iommu_init(void)
{
}
static inline void gart_iommu_shutdown(void) static inline void gart_iommu_shutdown(void)
{ {
} }
static inline void gart_parse_options(char *options)
{
}
static inline void gart_iommu_hole_init(void)
{
}
#endif #endif
#endif #endif