struct_irq_chip (9) Linux Manual Page

struct_irq_chip – hardware interrupt chip descriptor

Synopsis

struct irq_chip {
    struct device *parent_device;
    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);
    int (*irq_set_vcpu_affinity)(struct irq_data *data, void *vcpu_info);
    void (*ipi_send_single)(struct irq_data *data, unsigned int cpu);
    void (*ipi_send_mask)(struct irq_data *data, const struct cpumask *dest);
    unsigned long flags;
};

Members

parent_device

pointer to parent device for irqchip

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, when one or more interrupts are installed

irq_resume

function called from core code on resume once per chip, when one ore more interrupts are installed

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

irq_set_vcpu_affinity

optional to target a vCPU in a virtual machine

ipi_send_single

send a single IPI to destination cpus

ipi_send_mask

send an IPI to destination cpus in cpumask

flags

chip specific flags

Authors

Thomas Gleixner <tglx [at] linutronix.de>

Author.

Ingo Molnar <mingo [at] elte.hu>

Author.

Copyright