Enum OffchipUnplaceable 

pub enum OffchipUnplaceable {
    NothingOffChip,
    CellsNeedConfigBram {
        backend: MemBackend,
    },
    RegionsLargerThanPart {
        words: u64,
        part_words: u64,
    },
    StallOutlastsByte {
        stall_cycles: u64,
        byte_cycles: u64,
    },
    InitOutlastsLoad {
        init_cycles: u64,
        load_cycles: u64,
    },
}

Why an engine cannot have these memories off-chip.

Variants

NothingOffChip

Nothing is off-chip; the on-chip emitters build that engine.

CellsNeedConfigBram

The walk reads the config image through a registered port only under MemBackend::ConfigBram; the other backends read it combinationally, which no cache can serve.

Fields

backend: MemBackend

RegionsLargerThanPart

The regions the memories need do not fit the part.

Fields

words: u64

part_words: u64

StallOutlastsByte

A stall the loader can meet outlasts one UART byte, so a byte could complete while the one before it still waits.

Fields

stall_cycles: u64

byte_cycles: u64

InitOutlastsLoad

The edge could still be initializing the part when the loader first touches it.

Fields

init_cycles: u64

load_cycles: u64

Trait Implementations

impl Clone for OffchipUnplaceable

fn clone(&self) -> OffchipUnplaceable

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for OffchipUnplaceable

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

Formats the value using the given formatter.

impl PartialEq for OffchipUnplaceable

fn eq(&self, other: &OffchipUnplaceable) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for OffchipUnplaceable

impl StructuralPartialEq for OffchipUnplaceable