Struct Sun50iDe2 

pub struct Sun50iDe2 {
    regs: MmioRegion,
    power_state: PowerState,
    sram_claimed: bool,
    sram_config: Option<SramConfig>,
    children: Vec<BusChild>,
}

Fields

regs: MmioRegion

power_state: PowerState

sram_claimed: bool

sram_config: Option<SramConfig>

children: Vec<BusChild>

Implementations

impl Sun50iDe2

pub fn new() -> Self

Creates a new instance.

pub fn set_sram_config(&mut self, cfg: SramConfig)

Supplies the SRAM-controller configuration required by Self::claim_sram before BusDriver::init can succeed.

pub fn claim_sram(&mut self) -> Result<(), BusError>

Claims DE2 ownership of its SRAM region: read-modify-write of the SRAM controller control register to route the region away from the CPU/debug default owner, followed by a read-back verification.

Fails with BusError::InitFailed when no configuration was supplied, and with BusError::BusFault when the read-back does not confirm the new ownership (controller absent or wedged).

pub fn release_sram(&mut self)

Releases DE2 SRAM ownership, restoring the default (CPU) owner. A missing configuration or failed write leaves the flag cleared so a later shutdown/claim cycle starts from a known state.

pub fn sram_claimed(&self) -> bool

Returns true while this instance owns the DE2 SRAM region.

pub fn add_child(&mut self, child: BusChild)

Performs the add child operation.

Trait Implementations

impl BusDriver for Sun50iDe2

fn name(&self) -> &str

Performs the name operation.

fn compatible(&self) -> &[&str]

Performs the compatible operation.

fn init(&mut self, base: usize) -> Result<(), BusError>

Performs the init operation.

fn shutdown(&mut self) -> Result<(), BusError>

Performs the shutdown operation.

fn read_reg(&self, offset: usize) -> Result<u32, BusError>

Reads reg.

fn write_reg(&mut self, offset: usize, value: u32) -> Result<(), BusError>

Writes reg.

fn children(&self) -> Vec<BusChild>

Performs the children operation.

fn as_firewall(&self) -> Option<&dyn FirewallController>

Returns the optional [FirewallController] capability, if any.

fn probe(&self) -> bool

Returns true if the driver believes the hardware is present.

fn suspend(&mut self) -> Result<(), BusError>

Performs the suspend operation.

fn resume(&mut self) -> Result<(), BusError>

Performs the resume operation.

fn error_count(&self) -> u64

Performs the error count operation.

fn handle_irq(&mut self) -> bool

Handles irq.