Struct libreda_pnr::design::SimpleDesignRef

pub struct SimpleDesignRef<'a, C: L2NBase> {
    pub fused_layout_netlist: &'a C,
    pub top_cell: C::CellId,
    pub cell_outlines: &'a HashMap<C::CellId, Rect<C::Coord>>,
    pub placement_region: &'a Vec<SimpleRPolygon<C::Coord>>,
    pub placement_status: &'a HashMap<C::CellInstId, PlacementStatus>,
    pub net_weights: &'a HashMap<C::NetId, f64>,
    pub placement_location: &'a HashMap<C::CellInstId, SimpleTransform<C::Coord>>,
}

Collection of data representing the chip during the place & route flow. This struct borrows the data. In contrast, SimpleDesign owns the data.

Fields

fused_layout_netlist: &'a C

Base layout and netlist data-structure.

top_cell: C::CellId

Cell which contains the instances to be placed.

cell_outlines: &'a HashMap<C::CellId, Rect<C::Coord>>

Outline shapes of the cells to be placed.

placement_region: &'a Vec<SimpleRPolygon<C::Coord>>

Regions where cells are allowed to be placed.

placement_status: &'a HashMap<C::CellInstId, PlacementStatus>

Placement status of the cell instances. Default is Movable.

net_weights: &'a HashMap<C::NetId, f64>

Net weights. Default for nets which are not in the hash map is 1.0.

placement_location: &'a HashMap<C::CellInstId, SimpleTransform<C::Coord>>

Overwrite the location information from the fused_layout_netlist.

Trait Implementations

impl<'a, C: L2NBase> PlacementProblem<C> for SimpleDesignRef<'a, 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 net_weight(&self, net_id: &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 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 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.

impl<'a, C: L2NBase> RoutingProblem<C> for SimpleDesignRef<'a, 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 nets(&self) -> Box<dyn Iterator<Item = C::NetId> + '_>

Return the nets which should be routed.

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. Place and route algorithms may or may not use the net weight.

fn blockages( &self ) -> Box<dyn Iterator<Item = (C::LayerId, SimpleRPolygon<C::Coord>)>>

Shapes where routes should not pass.

fn boundary(&self) -> Option<SimpleRPolygon<C::Coord>>

Routes must remain within this boundary.

fn arc_weight( &self, _signal_source: &TerminalId<C>, _signal_destination: &TerminalId<C> ) -> f64

Weight of an ‘arc’, i.e. a net segment which starts at signal_source and ends at signal_destination. Default weight is 1.0`. Place and route algorithms may or may not use the arc weight.

impl<'a, C: L2NBase> GlobalRoutingProblem<C> for SimpleDesignRef<'a, C>