struct irq

struct irq_chip
Prev	Chapter 7. Structures	Next

Name

struct irq_chip — hardware interrupt chip descriptor

Synopsis

struct irq_chip {
  const char * name;
  unsigned int	(* irq_startup) (struct irq_data *data);
  void (* irq_shutdown) (struct irq_data *data);
  void (* irq_enable) (struct irq_data *data);
  void (* irq_disable) (struct irq_data *data);
  void (* irq_ack) (struct irq_data *data);
  void (* irq_mask) (struct irq_data *data);
  void (* irq_mask_ack) (struct irq_data *data);
  void (* irq_unmask) (struct irq_data *data);
  void (* irq_eoi) (struct irq_data *data);
  int (* irq_set_affinity) (struct irq_data *data, const struct cpumask *dest, bool force);
  int (* irq_retrigger) (struct irq_data *data);
  int (* irq_set_type) (struct irq_data *data, unsigned int flow_type);
  int (* irq_set_wake) (struct irq_data *data, unsigned int on);
  void (* irq_bus_lock) (struct irq_data *data);
  void (* irq_bus_sync_unlock) (struct irq_data *data);
  void (* irq_cpu_online) (struct irq_data *data);
  void (* irq_cpu_offline) (struct irq_data *data);
  void (* irq_suspend) (struct irq_data *data);
  void (* irq_resume) (struct irq_data *data);
  void (* irq_pm_shutdown) (struct irq_data *data);
  void (* irq_print_chip) (struct irq_data *data, struct seq_file *p);
  unsigned long flags;
#ifdef CONFIG_IRQ_RELEASE_METHOD
  void (* release) (unsigned int irq, void *dev_id);
#endif
};

Members

name: name for /proc/interrupts
irq_startup: start up the interrupt (defaults to ->enable if NULL)
irq_shutdown: shut down the interrupt (defaults to ->disable if NULL)
irq_enable: enable the interrupt (defaults to chip->unmask if NULL)
irq_disable: disable the interrupt
irq_ack: start of a new interrupt
irq_mask: mask an interrupt source
irq_mask_ack: ack and mask an interrupt source
irq_unmask: unmask an interrupt source
irq_eoi: end of interrupt
irq_set_affinity: set the CPU affinity on SMP machines
irq_retrigger: resend an IRQ to the CPU
irq_set_type: set the flow type (IRQ_TYPE_LEVEL/etc.) of an IRQ
irq_set_wake: enable/disable power-management wake-on of an IRQ
irq_bus_lock: function to lock access to slow bus (i2c) chips
irq_bus_sync_unlock: function to sync and unlock slow bus (i2c) chips
irq_cpu_online: configure an interrupt source for a secondary CPU
irq_cpu_offline: un-configure an interrupt source for a secondary CPU
irq_suspend: function called from core code on suspend once per chip
irq_resume: function called from core code on resume once per chip
irq_pm_shutdown: function called from core code on shutdown once per chip
irq_print_chip: optional to print special chip info in show_interrupts
flags: chip specific flags
release: release function solely used by UML