1 #ifndef _ASM_X86_IRQ_REMAPPING_H
2 #define _ASM_X86_IRQ_REMAPPING_H
4 #define IRTE_DEST(dest) ((x2apic_mode) ? dest : dest << 8)
6 #ifdef CONFIG_IRQ_REMAP
7 static void irq_remap_modify_chip_defaults(struct irq_chip *chip);
8 static inline void prepare_irte(struct irte *irte, int vector,
11 memset(irte, 0, sizeof(*irte));
14 irte->dst_mode = apic->irq_dest_mode;
16 * Trigger mode in the IRTE will always be edge, and for IO-APIC, the
17 * actual level or edge trigger will be setup in the IO-APIC
18 * RTE. This will help simplify level triggered irq migration.
19 * For more details, see the comments (in io_apic.c) explainig IO-APIC
20 * irq migration in the presence of interrupt-remapping.
22 irte->trigger_mode = 0;
23 irte->dlvry_mode = apic->irq_delivery_mode;
24 irte->vector = vector;
25 irte->dest_id = IRTE_DEST(dest);
28 static inline bool irq_remapped(struct irq_cfg *cfg)
30 return cfg->irq_2_iommu.iommu != NULL;
33 static void prepare_irte(struct irte *irte, int vector, unsigned int dest)
36 static inline bool irq_remapped(struct irq_cfg *cfg)
40 static inline void irq_remap_modify_chip_defaults(struct irq_chip *chip)
45 #endif /* _ASM_X86_IRQ_REMAPPING_H */