forked from Minki/linux
7249164346
The irq_domain_ops.activate() callback has no return value and no way to
tell the function that the activation is early.
The upcoming changes to support a reservation scheme which allows to assign
interrupt vectors on x86 only when the interrupt is actually requested
requires:
- A return value, so activation can fail at request_irq() time
- Information that the activate invocation is early, i.e. before
request_irq().
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Juergen Gross <jgross@suse.com>
Tested-by: Yu Chen <yu.c.chen@intel.com>
Acked-by: Juergen Gross <jgross@suse.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Alok Kataria <akataria@vmware.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Rui Zhang <rui.zhang@intel.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Len Brown <lenb@kernel.org>
Link: https://lkml.kernel.org/r/20170913213152.848490816@linutronix.de
64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
#ifndef _ASM_IRQDOMAIN_H
|
|
#define _ASM_IRQDOMAIN_H
|
|
|
|
#include <linux/irqdomain.h>
|
|
#include <asm/hw_irq.h>
|
|
|
|
#ifdef CONFIG_X86_LOCAL_APIC
|
|
enum {
|
|
/* Allocate contiguous CPU vectors */
|
|
X86_IRQ_ALLOC_CONTIGUOUS_VECTORS = 0x1,
|
|
};
|
|
|
|
extern struct irq_domain *x86_vector_domain;
|
|
|
|
extern void init_irq_alloc_info(struct irq_alloc_info *info,
|
|
const struct cpumask *mask);
|
|
extern void copy_irq_alloc_info(struct irq_alloc_info *dst,
|
|
struct irq_alloc_info *src);
|
|
#endif /* CONFIG_X86_LOCAL_APIC */
|
|
|
|
#ifdef CONFIG_X86_IO_APIC
|
|
struct device_node;
|
|
struct irq_data;
|
|
|
|
enum ioapic_domain_type {
|
|
IOAPIC_DOMAIN_INVALID,
|
|
IOAPIC_DOMAIN_LEGACY,
|
|
IOAPIC_DOMAIN_STRICT,
|
|
IOAPIC_DOMAIN_DYNAMIC,
|
|
};
|
|
|
|
struct ioapic_domain_cfg {
|
|
enum ioapic_domain_type type;
|
|
const struct irq_domain_ops *ops;
|
|
struct device_node *dev;
|
|
};
|
|
|
|
extern const struct irq_domain_ops mp_ioapic_irqdomain_ops;
|
|
|
|
extern int mp_irqdomain_alloc(struct irq_domain *domain, unsigned int virq,
|
|
unsigned int nr_irqs, void *arg);
|
|
extern void mp_irqdomain_free(struct irq_domain *domain, unsigned int virq,
|
|
unsigned int nr_irqs);
|
|
extern int mp_irqdomain_activate(struct irq_domain *domain,
|
|
struct irq_data *irq_data, bool early);
|
|
extern void mp_irqdomain_deactivate(struct irq_domain *domain,
|
|
struct irq_data *irq_data);
|
|
extern int mp_irqdomain_ioapic_idx(struct irq_domain *domain);
|
|
#endif /* CONFIG_X86_IO_APIC */
|
|
|
|
#ifdef CONFIG_PCI_MSI
|
|
extern void arch_init_msi_domain(struct irq_domain *domain);
|
|
#else
|
|
static inline void arch_init_msi_domain(struct irq_domain *domain) { }
|
|
#endif
|
|
|
|
#ifdef CONFIG_HT_IRQ
|
|
extern void arch_init_htirq_domain(struct irq_domain *domain);
|
|
#else
|
|
static inline void arch_init_htirq_domain(struct irq_domain *domain) { }
|
|
#endif
|
|
|
|
#endif
|