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iommu: Cleanup ifdefs in detect_intel_iommu() 

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: yinghai@kernel.org
Cc: youquan.song@intel.com
Cc: joerg.roedel@amd.com
Cc: tony.luck@intel.com
Cc: dwmw2@infradead.org
Link: http://lkml.kernel.org/r/20110824001456.386003047@sbsiddha-desk.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Suresh Siddha 2011-08-23 17:05:22 -07:00 committed by Ingo Molnar
parent 80990c5ba6
commit f5d1b97bcd
3 changed files with 12 additions and 10 deletions
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6
arch/ia64/include/asm/iommu.h
View File

@ -7,12 +7,14 @@
extern void pci_iommu_shutdown(void);
extern void no_iommu_init(void);
extern int force_iommu, no_iommu;
extern int iommu_detected;
#ifdef CONFIG_DMAR
extern int force_iommu, no_iommu;
extern int iommu_pass_through;
extern int iommu_detected;
#else
#define iommu_pass_through (0)
#define no_iommu (1)
#define iommu_detected (0)
#endif
extern void iommu_dma_init(void);
extern void machvec_init(const char *name);

13
drivers/iommu/dmar.c
View File

@ -551,22 +551,21 @@ int __init detect_intel_iommu(void)
if (ret)
ret = check_zero_address();
{
#ifdef CONFIG_INTR_REMAP
struct acpi_table_dmar *dmar;
dmar = (struct acpi_table_dmar *) dmar_tbl;
if (ret && cpu_has_x2apic && dmar->flags & 0x1)
if (ret && intr_remapping_enabled && cpu_has_x2apic &&
dmar->flags & 0x1)
printk(KERN_INFO
"Queued invalidation will be enabled to support "
"x2apic and Intr-remapping.\n");
#endif
#ifdef CONFIG_DMAR
"Queued invalidation will be enabled to support x2apic and Intr-remapping.\n");
if (ret && !no_iommu && !iommu_detected && !dmar_disabled) {
iommu_detected = 1;
/* Make sure ACS will be enabled */
pci_request_acs();
}
#endif
#ifdef CONFIG_X86
if (ret)
x86_init.iommu.iommu_init = intel_iommu_init;

3
include/linux/dma_remapping.h
View File

@ -30,6 +30,7 @@ struct root_entry;
extern void free_dmar_iommu(struct intel_iommu *iommu);
extern int iommu_calculate_agaw(struct intel_iommu *iommu);
extern int iommu_calculate_max_sagaw(struct intel_iommu *iommu);
extern int dmar_disabled;
#else
static inline int iommu_calculate_agaw(struct intel_iommu *iommu)
{
@ -42,8 +43,8 @@ static inline int iommu_calculate_max_sagaw(struct intel_iommu *iommu)
static inline void free_dmar_iommu(struct intel_iommu *iommu)
{
}
#define dmar_disabled (1)
#endif
extern int dmar_disabled;
#endif