xref: /gem5/ext/mcpat/cacti/crossbar.h

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#ifndef __CROSSBAR__
#define __CROSSBAR__

#include <assert.h>

#include <iostream>

#include "basic_circuit.h"
#include "cacti_interface.h"
#include "component.h"
#include "mat.h"
#include "parameter.h"
#include "wire.h"

class Crossbar : public Component {
public:
    Crossbar(
        double in,
        double out,
        double flit_sz,
        TechnologyParameter::DeviceType *dt = &(g_tp.peri_global));
    ~Crossbar();

    void print_crossbar();
    double output_buffer();
    void compute_power();

    double n_inp, n_out;
    double flit_size;
    double tri_inp_cap, tri_out_cap, tri_ctr_cap, tri_int_cap;

private:
    double CB_ADJ;
    /*
     * Adjust factor of the height of the cross-point (tri-state buffer) cell (layout) in crossbar
     * buffer is adjusted to get an aspect ratio of whole cross bar close to one;
     * when adjust the ratio, the number of wires route over the tri-state buffers does not change,
     * however, the effective wiring pitch changes. Specifically, since CB_ADJ will increase
     * during the adjust, the tri-state buffer will become taller and thiner, and the effective wiring pitch
     * will increase. As a result, the height of the crossbar (area.h) will increase.
     */

    TechnologyParameter::DeviceType *deviceType;
    double TriS1, TriS2;
    double min_w_pmos, Vdd;

};




#endif