Struct VexpressConfig 

pub struct VexpressConfig {
    regs: MmioRegion,
    dcc_regs: MmioRegion,
    dcc_initialized: AtomicBool,
    master_site: u32,
    power_state: PowerState,
}

Fields

regs: MmioRegion

dcc_regs: MmioRegion

DCC clock-generator register block, mapped separately from the syscfg registers (platform-dependent base).

dcc_initialized: AtomicBool

True once the DCC has been programmed; guarded atomically because transactions are issued through &self.

master_site: u32

power_state: PowerState

Implementations

impl VexpressConfig

pub fn new() -> Self

Creates a new instance.

pub fn init_dcc_regs(&mut self, base: usize)

Maps the DCC register block. Must be called before Self::init for config-bus transactions to be allowed (the DCC must run before any transaction can succeed, per the VExpress syscfg spec).

fn ensure_dcc_ready(&self) -> Result<(), BusError>

Programs the DCC to run the config bus at DCC_TARGET_FREQ_MHZ from DCC_REF_FREQ_MHZ, exactly once.

fn detect_master_site(&mut self)

Performs the detect master site operation.

pub fn read_procid(&self, site: u32) -> u32

Reads procid.

pub fn hbi(&self) -> u32

Performs the hbi operation.

pub fn config_read( &self, site: u32, position: u32, dcc: u32, function: u32, device: u32, ) -> Result<u32, BusError>

Performs the config read operation.

pub fn config_write( &self, site: u32, position: u32, dcc: u32, function: u32, device: u32, data: u32, ) -> Result<(), BusError>

Performs the config write operation.

Trait Implementations

impl BusDriver for VexpressConfig

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 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 children(&self) -> Vec<BusChild>

Performs the children operation.

fn handle_irq(&mut self) -> bool

Handles irq.