aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--arch/ia64/include/asm/iommu.h6
-rw-r--r--drivers/iommu/dmar.c13
-rw-r--r--include/linux/dma_remapping.h3
3 files changed, 12 insertions, 10 deletions
diff --git a/arch/ia64/include/asm/iommu.h b/arch/ia64/include/asm/iommu.h
index 745e095fe82e..95461bb0b8e6 100644
--- a/arch/ia64/include/asm/iommu.h
+++ b/arch/ia64/include/asm/iommu.h
@@ -7,12 +7,14 @@
7 7
8extern void pci_iommu_shutdown(void); 8extern void pci_iommu_shutdown(void);
9extern void no_iommu_init(void); 9extern void no_iommu_init(void);
10extern int force_iommu, no_iommu;
11extern int iommu_detected;
12#ifdef CONFIG_DMAR 10#ifdef CONFIG_DMAR
11extern int force_iommu, no_iommu;
13extern int iommu_pass_through; 12extern int iommu_pass_through;
13extern int iommu_detected;
14#else 14#else
15#define iommu_pass_through (0) 15#define iommu_pass_through (0)
16#define no_iommu (1)
17#define iommu_detected (0)
16#endif 18#endif
17extern void iommu_dma_init(void); 19extern void iommu_dma_init(void);
18extern void machvec_init(const char *name); 20extern void machvec_init(const char *name);
diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index 6f0422dcd0f5..587e8f2d38d8 100644
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -551,22 +551,21 @@ int __init detect_intel_iommu(void)
551 if (ret) 551 if (ret)
552 ret = check_zero_address(); 552 ret = check_zero_address();
553 { 553 {
554#ifdef CONFIG_INTR_REMAP
555 struct acpi_table_dmar *dmar; 554 struct acpi_table_dmar *dmar;
556 555
557 dmar = (struct acpi_table_dmar *) dmar_tbl; 556 dmar = (struct acpi_table_dmar *) dmar_tbl;
558 if (ret && cpu_has_x2apic && dmar->flags & 0x1) 557
558 if (ret && intr_remapping_enabled && cpu_has_x2apic &&
559 dmar->flags & 0x1)
559 printk(KERN_INFO 560 printk(KERN_INFO
560 "Queued invalidation will be enabled to support " 561 "Queued invalidation will be enabled to support x2apic and Intr-remapping.\n");
561 "x2apic and Intr-remapping.\n"); 562
562#endif
563#ifdef CONFIG_DMAR
564 if (ret && !no_iommu && !iommu_detected && !dmar_disabled) { 563 if (ret && !no_iommu && !iommu_detected && !dmar_disabled) {
565 iommu_detected = 1; 564 iommu_detected = 1;
566 /* Make sure ACS will be enabled */ 565 /* Make sure ACS will be enabled */
567 pci_request_acs(); 566 pci_request_acs();
568 } 567 }
569#endif 568
570#ifdef CONFIG_X86 569#ifdef CONFIG_X86
571 if (ret) 570 if (ret)
572 x86_init.iommu.iommu_init = intel_iommu_init; 571 x86_init.iommu.iommu_init = intel_iommu_init;
diff --git a/include/linux/dma_remapping.h b/include/linux/dma_remapping.h
index aaa12cb8227a..b98b61b3743e 100644
--- a/include/linux/dma_remapping.h
+++ b/include/linux/dma_remapping.h
@@ -30,6 +30,7 @@ struct root_entry;
30extern void free_dmar_iommu(struct intel_iommu *iommu); 30extern void free_dmar_iommu(struct intel_iommu *iommu);
31extern int iommu_calculate_agaw(struct intel_iommu *iommu); 31extern int iommu_calculate_agaw(struct intel_iommu *iommu);
32extern int iommu_calculate_max_sagaw(struct intel_iommu *iommu); 32extern int iommu_calculate_max_sagaw(struct intel_iommu *iommu);
33extern int dmar_disabled;
33#else 34#else
34static inline int iommu_calculate_agaw(struct intel_iommu *iommu) 35static inline int iommu_calculate_agaw(struct intel_iommu *iommu)
35{ 36{
@@ -42,8 +43,8 @@ static inline int iommu_calculate_max_sagaw(struct intel_iommu *iommu)
42static inline void free_dmar_iommu(struct intel_iommu *iommu) 43static inline void free_dmar_iommu(struct intel_iommu *iommu)
43{ 44{
44} 45}
46#define dmar_disabled (1)
45#endif 47#endif
46 48
47extern int dmar_disabled;
48 49
49#endif 50#endif