LXR linux/arch/x86/include/asm/irqdomain.h

   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
   9enum {
  10        /* Allocate contiguous CPU vectors */
  11        X86_IRQ_ALLOC_CONTIGUOUS_VECTORS                = 0x1,
  12        X86_IRQ_ALLOC_LEGACY                            = 0x2,
  13};
  14
  15extern int x86_fwspec_is_ioapic(struct irq_fwspec *fwspec);
  16extern int x86_fwspec_is_hpet(struct irq_fwspec *fwspec);
  17
  18extern struct irq_domain *x86_vector_domain;
  19
  20extern void init_irq_alloc_info(struct irq_alloc_info *info,
  21                                const struct cpumask *mask);
  22extern void copy_irq_alloc_info(struct irq_alloc_info *dst,
  23                                struct irq_alloc_info *src);
  24#endif /* CONFIG_X86_LOCAL_APIC */
  25
  26#ifdef CONFIG_X86_IO_APIC
  27struct device_node;
  28struct irq_data;
  29
  30enum ioapic_domain_type {
  31        IOAPIC_DOMAIN_INVALID,
  32        IOAPIC_DOMAIN_LEGACY,
  33        IOAPIC_DOMAIN_STRICT,
  34        IOAPIC_DOMAIN_DYNAMIC,
  35};
  36
  37struct ioapic_domain_cfg {
  38        enum ioapic_domain_type         type;
  39        const struct irq_domain_ops     *ops;
  40        struct device_node              *dev;
  41};
  42
  43extern const struct irq_domain_ops mp_ioapic_irqdomain_ops;
  44
  45extern int mp_irqdomain_alloc(struct irq_domain *domain, unsigned int virq,
  46                              unsigned int nr_irqs, void *arg);
  47extern void mp_irqdomain_free(struct irq_domain *domain, unsigned int virq,
  48                              unsigned int nr_irqs);
  49extern int mp_irqdomain_activate(struct irq_domain *domain,
  50                                 struct irq_data *irq_data, bool reserve);
  51extern void mp_irqdomain_deactivate(struct irq_domain *domain,
  52                                    struct irq_data *irq_data);
  53extern int mp_irqdomain_ioapic_idx(struct irq_domain *domain);
  54#endif /* CONFIG_X86_IO_APIC */
  55
  56#ifdef CONFIG_PCI_MSI
  57void x86_create_pci_msi_domain(void);
  58struct irq_domain *native_create_pci_msi_domain(void);
  59extern struct irq_domain *x86_pci_msi_default_domain;
  60#else
  61static inline void x86_create_pci_msi_domain(void) { }
  62#define native_create_pci_msi_domain    NULL
  63#define x86_pci_msi_default_domain      NULL
  64#endif
  65
  66#endif
  67