1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_IRQDOMAIN_H 3 #define _ASM_IRQDOMAIN_H 4 5 #include <linux/irqdomain.h> 6 #include <asm/hw_irq.h> 7 8 #ifdef CONFIG_X86_LOCAL_APIC 9 enum { 10 /* Allocate contiguous CPU vectors */ 11 X86_IRQ_ALLOC_CONTIGUOUS_VECTORS = 0x1, 12 X86_IRQ_ALLOC_LEGACY = 0x2, 13 }; 14 15 extern struct irq_domain *x86_vector_domain; 16 17 extern void init_irq_alloc_info(struct irq_alloc_info *info, 18 const struct cpumask *mask); 19 extern void copy_irq_alloc_info(struct irq_alloc_info *dst, 20 struct irq_alloc_info *src); 21 #endif /* CONFIG_X86_LOCAL_APIC */ 22 23 #ifdef CONFIG_X86_IO_APIC 24 struct device_node; 25 struct irq_data; 26 27 enum ioapic_domain_type { 28 IOAPIC_DOMAIN_INVALID, 29 IOAPIC_DOMAIN_LEGACY, 30 IOAPIC_DOMAIN_STRICT, 31 IOAPIC_DOMAIN_DYNAMIC, 32 }; 33 34 struct ioapic_domain_cfg { 35 enum ioapic_domain_type type; 36 const struct irq_domain_ops *ops; 37 struct device_node *dev; 38 }; 39 40 extern const struct irq_domain_ops mp_ioapic_irqdomain_ops; 41 42 extern int mp_irqdomain_alloc(struct irq_domain *domain, unsigned int virq, 43 unsigned int nr_irqs, void *arg); 44 extern void mp_irqdomain_free(struct irq_domain *domain, unsigned int virq, 45 unsigned int nr_irqs); 46 extern int mp_irqdomain_activate(struct irq_domain *domain, 47 struct irq_data *irq_data, bool reserve); 48 extern void mp_irqdomain_deactivate(struct irq_domain *domain, 49 struct irq_data *irq_data); 50 extern int mp_irqdomain_ioapic_idx(struct irq_domain *domain); 51 #endif /* CONFIG_X86_IO_APIC */ 52 53 #ifdef CONFIG_PCI_MSI 54 extern void arch_init_msi_domain(struct irq_domain *domain); 55 #else 56 static inline void arch_init_msi_domain(struct irq_domain *domain) { } 57 #endif 58 59 #endif 60