struct irq_chip
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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_calc_mask) (struct irq_data *data);
  void (* irq_print_chip) (struct irq_data *data, struct seq_file *p);
  int (* irq_request_resources) (struct irq_data *data);
  void (* irq_release_resources) (struct irq_data *data);
  void (* irq_compose_msi_msg) (struct irq_data *data, struct msi_msg *msg);
  void (* irq_write_msi_msg) (struct irq_data *data, struct msi_msg *msg);
  int (* irq_get_irqchip_state) (struct irq_data *data, enum irqchip_irq_state which, bool *state);
  int (* irq_set_irqchip_state) (struct irq_data *data, enum irqchip_irq_state which, bool state);
  unsigned long flags;
};

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_calc_mask

Optional function to set irq_data.mask for special cases

irq_print_chip

optional to print special chip info in show_interrupts

irq_request_resources

optional to request resources before calling any other callback related to this irq

irq_release_resources

optional to release resources acquired with irq_request_resources

irq_compose_msi_msg

optional to compose message content for MSI

irq_write_msi_msg

optional to write message content for MSI

irq_get_irqchip_state

return the internal state of an interrupt

irq_set_irqchip_state

set the internal state of a interrupt

flags

chip specific flags

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struct irq_data Home struct irq_chip_regs