Interface guest_irq_controller.h

The libsel4vm IRQ controller interface provides a base abstraction around initialising a guest VM irq controller and methods for injecting IRQs into a running VM instance.

Brief content:

Functions:

vm_inject_irq(vcpu, irq)

vm_set_irq_level(vcpu, irq, irq_level)

vm_register_irq(vcpu, irq, ack_fn, cookie)

vm_create_default_irq_controller(vm)

Functions

The interface guest_irq_controller.h defines the following functions.

Function vm_inject_irq(vcpu, irq)

Inject an IRQ into a VM's interrupt controller

Parameters:

  • vcpu {vm_vcpu_t *}: Handle to the VCPU
  • irq {int}: IRQ number to inject

Returns:

  • 0 on success, otherwise -1 for error

Back to interface description.

Function vm_set_irq_level(vcpu, irq, irq_level)

Set level of IRQ number into a VM's interrupt controller

Parameters:

  • vcpu {vm_vcpu_t}: Handle to the VCPU
  • irq {int}: IRQ number to set level on
  • irq_level {int}: Value of IRQ level

Returns:

  • 0 on success, otherwise -1 for error

Back to interface description.

Function vm_register_irq(vcpu, irq, ack_fn, cookie)

Register irq with an acknowledgment function

Parameters:

  • vcpu {vm_vcpu_t *}: Handle to the VCPU
  • irq {int}: IRQ number to register acknowledgement function on
  • ack_fn {irq_ack_fn_t}: IRQ acknowledgement function
  • cookie {void *}: Cookie to pass back with IRQ acknowledgement function

Returns:

  • 0 on success, otherwise -1 for error

Back to interface description.

Function vm_create_default_irq_controller(vm)

Install the default interrupt controller into the VM

Parameters:

  • vm {vm_t *}: Handle to the VM

Returns:

  • 0 on success, otherwise -1 for error

Back to interface description.

Back to top.