xref: /openbmc/linux/arch/x86/include/asm/irqdomain.h (revision fb960bd2)
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 early);
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