Struct libreda_pnr::design::SimpleDesign

pub struct SimpleDesign<C: L2NBase> {
    pub fused_layout_netlist: C,
    pub top_cell: C::CellId,
    pub cell_outlines: HashMap<C::CellId, Rect<C::Coord>>,
    pub placement_region: Vec<SimpleRPolygon<C::Coord>>,
    pub placement_status: HashMap<C::CellInstId, PlacementStatus>,
}

Collection of data representing the chip during the place & route flow. This struct owns the data. In contrast, SimpleDesignRef does only borrow the data.

Fields

fused_layout_netlist: C

Base layout and netlist data-structure.

top_cell: C::CellId

Cell which contains the instances to be placed.

cell_outlines: HashMap<C::CellId, Rect<C::Coord>>

Outline shapes of the cells to be placed.

placement_region: Vec<SimpleRPolygon<C::Coord>>

Regions where cells are allowed to be placed.

placement_status: HashMap<C::CellInstId, PlacementStatus>

Placement status of the cell instances. Default is Movable.

Implementations

impl<C: L2NBase> SimpleDesign<C>

pub fn set_placement_status( &mut self, cell_inst: C::CellInstId, placement_status: PlacementStatus )

Set the placement status of a cell instance.

Trait Implementations

impl<C: L2NBase> PlacementProblem<C> for SimpleDesign<C>

fn fused_layout_netlist(&self) -> &C

Get the base layout/netlist structure.

fn top_cell(&self) -> C::CellId

Get the top cell whose content should be placed.

fn placement_region(&self) -> Vec<SimpleRPolygon<C::Coord>>

Get a list of polygons which describe where cells are allowed to be placed.

fn initial_position( &self, cell_instance: &C::CellInstId ) -> SimpleTransform<C::Coord>

Get the position of a cell instance which should be used as an initial value for the optimization. This is most likely the output of the previous placement step.

fn placement_status(&self, cell_instance: &C::CellInstId) -> PlacementStatus

Tell if the cell instance can be moved by the placement engine.

fn cell_outline(&self, cell: &C::CellId) -> Option<Rect<C::Coord>>

Get the abutment box / outline of the cell.

fn soft_blockages(&self) -> Vec<SimpleRPolygon<C::Coord>>

Get regions which should not be used for placement but can if necessary. Overlap of cells with this regions should be minimized.

fn cell_instance_outline( &self, cell_instance: &C::CellInstId ) -> Option<Rect<C::Coord>>

Get the abutment box / outline of the cell instance.

fn net_weight(&self, _net: &C::NetId) -> f64

Get the weight of a net. Default is 1.0. When optimizing the wire-length, the weighted wire-length should be used. For example a weight 0.0 means that the net should not be considered for wire-length optimization.

fn get_fixed_instances(&self) -> HashSet<C::CellInstId>

Get the set of fixed instances.

fn get_movable_instances(&self) -> HashSet<C::CellInstId>

Get the set of movable cell instances.