root/arch/x86/include/asm/irqdomain.h

INCLUDED FROM

DEFINITIONS

1. arch_init_msi_domain

   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