diff options
| -rw-r--r-- | arch/x86/include/asm/intr_remapping.h | 6 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/apic.c | 6 | ||||
| -rw-r--r-- | drivers/iommu/intel_intr_remapping.c | 7 | ||||
| -rw-r--r-- | drivers/iommu/intr_remapping.c | 24 | ||||
| -rw-r--r-- | drivers/iommu/intr_remapping.h | 9 | ||||
| -rw-r--r-- | include/linux/dmar.h | 18 |
6 files changed, 47 insertions, 23 deletions
diff --git a/arch/x86/include/asm/intr_remapping.h b/arch/x86/include/asm/intr_remapping.h index 207c605..55aa892 100644 --- a/arch/x86/include/asm/intr_remapping.h +++ b/arch/x86/include/asm/intr_remapping.h @@ -30,6 +30,9 @@ extern void setup_intr_remapping(void); extern int intr_remapping_supported(void); extern int intr_hardware_init(void); extern int intr_hardware_enable(void); +extern void intr_hardware_disable(void); +extern int intr_hardware_reenable(int); +extern int intr_enable_fault_handling(void); #else /* CONFIG_IRQ_REMAP */ @@ -39,6 +42,9 @@ static inline void setup_intr_remapping(void) { } static inline int intr_remapping_supported(void) { return 0; } static inline int intr_hardware_init(void) { return -ENODEV; } static inline int intr_hardware_enable(void) { return -ENODEV; } +static inline void intr_hardware_disable(void) { } +static inline int intr_hardware_reenable(int eim) { return -ENODEV; } +static inline int intr_enable_fault_handling(void) { return -ENODEV; } #endif /* CONFIG_IRQ_REMAP */ diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 1db6f63..a276268 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -1443,7 +1443,7 @@ void __init bsp_end_local_APIC_setup(void) * handling for interrupt remapping. */ if (intr_remapping_enabled) - enable_drhd_fault_handling(); + intr_enable_fault_handling(); } @@ -2181,7 +2181,7 @@ static int lapic_suspend(void) disable_local_APIC(); if (intr_remapping_enabled) - disable_intr_remapping(); + intr_hardware_disable(); local_irq_restore(flags); return 0; @@ -2250,7 +2250,7 @@ static void lapic_resume(void) apic_read(APIC_ESR); if (intr_remapping_enabled) - reenable_intr_remapping(x2apic_mode); + intr_hardware_reenable(x2apic_mode); local_irq_restore(flags); } diff --git a/drivers/iommu/intel_intr_remapping.c b/drivers/iommu/intel_intr_remapping.c index 9c742fb..610b75b 100644 --- a/drivers/iommu/intel_intr_remapping.c +++ b/drivers/iommu/intel_intr_remapping.c @@ -764,7 +764,7 @@ int __init ir_dev_scope_init(void) } rootfs_initcall(ir_dev_scope_init); -void disable_intr_remapping(void) +static void disable_intr_remapping(void) { struct dmar_drhd_unit *drhd; struct intel_iommu *iommu = NULL; @@ -780,7 +780,7 @@ void disable_intr_remapping(void) } } -int reenable_intr_remapping(int eim) +static int reenable_intr_remapping(int eim) { struct dmar_drhd_unit *drhd; int setup = 0; @@ -818,4 +818,7 @@ struct irq_remap_ops intel_irq_remap_ops = { .supported = intel_intr_remapping_supported, .hardware_init = dmar_table_init, .hardware_enable = intel_enable_intr_remapping, + .hardware_disable = disable_intr_remapping, + .hardware_reenable = reenable_intr_remapping, + .enable_faulting = enable_drhd_fault_handling, }; diff --git a/drivers/iommu/intr_remapping.c b/drivers/iommu/intr_remapping.c index 670c69a..9aabed7 100644 --- a/drivers/iommu/intr_remapping.c +++ b/drivers/iommu/intr_remapping.c @@ -74,3 +74,27 @@ int __init intr_hardware_enable(void) return remap_ops->hardware_enable(); } + +void intr_hardware_disable(void) +{ + if (!remap_ops || !remap_ops->hardware_disable) + return; + + remap_ops->hardware_disable(); +} + +int intr_hardware_reenable(int mode) +{ + if (!remap_ops || !remap_ops->hardware_reenable) + return 0; + + return remap_ops->hardware_reenable(mode); +} + +int __init intr_enable_fault_handling(void) +{ + if (!remap_ops || !remap_ops->enable_faulting) + return -ENODEV; + + return remap_ops->enable_faulting(); +} diff --git a/drivers/iommu/intr_remapping.h b/drivers/iommu/intr_remapping.h index d6df732..2744c9a 100644 --- a/drivers/iommu/intr_remapping.h +++ b/drivers/iommu/intr_remapping.h @@ -37,6 +37,15 @@ struct irq_remap_ops { /* Enables the remapping hardware */ int (*hardware_enable)(void); + + /* Disables the remapping hardware */ + void (*hardware_disable)(void); + + /* Reenables the remapping hardware */ + int (*hardware_reenable)(int); + + /* Enable fault handling */ + int (*enable_faulting)(void); }; extern struct irq_remap_ops intel_irq_remap_ops; diff --git a/include/linux/dmar.h b/include/linux/dmar.h index 6d66c9c..f2bd87f 100644 --- a/include/linux/dmar.h +++ b/include/linux/dmar.h @@ -115,9 +115,6 @@ struct irte { }; #ifdef CONFIG_IRQ_REMAP -extern void disable_intr_remapping(void); -extern int reenable_intr_remapping(int); - extern int get_irte(int irq, struct irte *entry); extern int modify_irte(int irq, struct irte *irte_modified); extern int alloc_irte(struct intel_iommu *iommu, int irq, u16 count); @@ -179,21 +176,6 @@ static inline int set_msi_sid(struct irte *irte, struct pci_dev *dev) return 0; } -#define intr_remapping_enabled (0) - -static inline int enable_intr_remapping(void) -{ - return -1; -} - -static inline void disable_intr_remapping(void) -{ -} - -static inline int reenable_intr_remapping(int eim) -{ - return 0; -} #endif enum { |