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library ieee;
use ieee.std_logic_1164.all;
package types_pkg is
type t_av_st is record
data : std_ulogic_vector; -- src -> sink
valid : std_ulogic; -- src -> sink
empty : std_ulogic_vector; -- src -> sink
chnnl : std_ulogic_vector; -- src -> sink
end record t_av_st;
type t_arr_av_st is array (NATURAL range <>) of t_av_st;
end package types_pkg;
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.numeric_std_unsigned.all;
use work.types_pkg.all;
entity avl_st_pkt_switch is
generic(
G_SINKS : positive;
G_SOURCES : positive
);
port(
clk : in std_ulogic;
-- Avst Sink
avst_sink : inout t_arr_av_st(G_SINKS downto 1);
avst_source : inout t_arr_av_st(G_SOURCES downto 1);
sink_sel : in std_ulogic_vector(G_SINKS downto 1);
source_sel : in std_ulogic_vector(G_SOURCES downto 1)
);
end entity;
architecture rtl of avl_st_pkt_switch is
signal avst_current_sink : t_av_st(data(avst_sink(avst_sink'low).data'range), empty(avst_sink(avst_sink'low).empty'range), chnnl(avst_sink(avst_sink'low).chnnl'range));
begin
sink_sel_gen: for i in sink_sel'range generate
sink_sel_seq_proc: process(clk) is begin
avst_current_sink.valid <= '0';
end process;
end generate;
end architecture;
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.numeric_std_unsigned.all;
use work.types_pkg.all;
entity avl_st_pkt_switch_tb is
end entity;
architecture tb of avl_st_pkt_switch_tb is
constant clk_period : time := 10 ns;
signal clk : std_logic := '0';
constant C_VC_SOURCES : positive := 3;
constant C_VC_SINKS : positive := 3;
subtype vc_sources_range is natural range C_VC_SOURCES downto 1;
subtype vc_sinks_range is natural range C_VC_SINKS downto 1;
signal avst_snk : t_arr_av_st(vc_sinks_range)(data(8 downto 0), empty(0 downto 0), chnnl(0 downto 0));
signal avst_src : t_arr_av_st(vc_sources_range)(data(8 downto 0), empty(0 downto 0), chnnl(0 downto 0));
signal sink_sel : std_ulogic_vector(C_VC_SOURCES downto 1);
signal source_sel : std_ulogic_vector(C_VC_SINKS downto 1);
begin
main : process
begin
wait until rising_edge(clk);
end process main;
dut_inst: entity work.avl_st_pkt_switch
generic map (
G_SINKS => C_VC_SOURCES,
G_SOURCES => C_VC_SINKS)
port map (
clk => clk,
avst_sink => avst_src,
avst_source => avst_snk,
sink_sel => sink_sel,
source_sel => source_sel
);
clk <= not clk after clk_period / 2;
end architecture tb;
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