xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Intel IOMMU Suspend/Resume Support - Interrupt Remapping

Browse Source 
This patch enables suspend/resume for interrupt remapping. During suspend,
interrupt remapping is disabled. When resume, interrupt remapping is enabled
again.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Fenghua Yu
2009-03-27 14:22:44 -07:00
committed by David Woodhouse
parent eb4a52bc66
commit b24696bc55
6 changed files with 204 additions and 55 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86/include/asm/apic.h
View File

@@ -108,6 +108,10 @@ extern void native_apic_icr_write(u32 low, u32 id);
extern u64 native_apic_icr_read(void);
#ifdef CONFIG_X86_X2APIC
#define EIM_8BIT_APIC_ID 0
#define EIM_32BIT_APIC_ID 1
/*
* Make previous memory operations globally visible before
* sending the IPI through x2apic wrmsr. We need a serializing instruction or

11
arch/x86/include/asm/io_apic.h
View File

@@ -162,10 +162,13 @@ extern int (*ioapic_renumber_irq)(int ioapic, int irq);
extern void ioapic_init_mappings(void);
#ifdef CONFIG_X86_64
extern int save_IO_APIC_setup(void);
extern void mask_IO_APIC_setup(void);
extern void restore_IO_APIC_setup(void);
extern void reinit_intr_remapped_IO_APIC(int);
extern struct IO_APIC_route_entry **alloc_ioapic_entries(void);
extern void free_ioapic_entries(struct IO_APIC_route_entry **ioapic_entries);
extern int save_IO_APIC_setup(struct IO_APIC_route_entry **ioapic_entries);
extern void mask_IO_APIC_setup(struct IO_APIC_route_entry **ioapic_entries);
extern int restore_IO_APIC_setup(struct IO_APIC_route_entry **ioapic_entries);
extern void reinit_intr_remapped_IO_APIC(int intr_remapping,
struct IO_APIC_route_entry **ioapic_entries);
#endif
extern void probe_nr_irqs_gsi(void);