Struct sunrise_kernel::devices::lapic::LocalApic

pub struct LocalApic {
    internal: &'static UnsafeCell<LocalApicInternal>,
}

LocalApic driver.

Fields

internal: &'static UnsafeCell<LocalApicInternal>

Pointer to the LocalApic registers.

Implementations

impl LocalApic

pub unsafe fn new(address: PhysicalAddress) -> Self

Create a new LocalApic at the specified address.

Panics

Panics if address is not page-aligned.

Safety

address should be the physical address of a LocalApic device, and should not be shared.

pub fn enable(&self)

10.4.3 Enabling or Disabling the Local APIC

The local APIC can be enabled or disabled in either of two ways:

• Using the APIC global enable/disable flag in the IA32_APIC_BASE MSR (MSR address 1BH; see Figure 10-5)
• Using the APIC software enable/disable flag in the spurious-interrupt vector register (see Figure 10-23)

pub fn acknowledge(&self)

Acknowledge the last interrupt, signaling an end of interrupt.

See chapter 10.8: Handling Interrupts

pub fn local_apic_id(&self) -> u32

Unique ID of this Local APIC. May also be used as a way to uniquely identify a CPU.

pub fn in_service(&self) -> [u32; 8]

The ISR contains interrupt requests that have been dispatched to the processor for servicing, but not yet acknowledged by said processor.

See chapter 10.8.4: Interrupt Acceptance for Fixed Interrupts.

pub fn trigger_mode(&self) -> [u32; 8]

The trigger mode register (TMR) indicates the trigger mode of the interrupt. Upon acceptance of an interrupt into the IRR, the corresponding TMR bit is cleared for edge-triggered interrupts and set for level-triggered interrupts. If a TMR bit is set when an EOI cycle for its corresponding interrupt vector is generated, an EOI message is sent to all I/O APICs.

See chapter 10.8.4: Interrupt Acceptance for Fixed Interrupts.

pub fn interrupt_request_register(&self) -> [u32; 8]

The IRR contains the active interrupt requests that have been accepted, but not yet dispatched to the processor for servicing.

See chapter 10.8.4: Interrupt Acceptance for Fixed Interrupts.

pub fn send_interrupt_command(&mut self, val: u64)

Sends an IPI.

See 10.6 Issuing Interprocessor Interrupts

Trait Implementations

impl Debug for LocalApic

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Send for LocalApic

impl Sync for LocalApic