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White Rabbit core collection
Commit 16de3087 authored by Tomasz Wlostowski's avatar Tomasz Wlostowski
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fabric: xwb_fabric_(sink/source): WB interface bugfixes

parent 49ebab20
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Showing with 29 additions and 27 deletions
modules/fabric/xwb_fabric_sink.vhd
View file @ 16de3087
......@@ -6,7 +6,7 @@
-- Author : Tomasz Wlostowski
-- Company : CERN BE-CO-HT
-- Created : 2012-01-16
-- Last update: 2012-01-17
-- Last update: 2012-01-22
-- Platform :
-- Standard : VHDL'93
-------------------------------------------------------------------------------
......@@ -160,7 +160,7 @@ begin -- rtl
post_data <= fout_reg(15 downto 0);
post_addr <= fout_reg(17 downto 16);
post_sof <= fout_reg(21) and rd_d0 and q_valid;
post_sof <= fout_reg(21) and rd_d0; --and q_valid;
post_dvalid <= fout_reg(18);
......
modules/fabric/xwb_fabric_source.vhd
View file @ 16de3087
......@@ -30,9 +30,9 @@ end xwb_fabric_source;
architecture rtl of xwb_fabric_source is
constant c_fifo_width : integer := 16 + 2 + 4;
signal q_valid, full, we, rd, rd_d0 : std_logic;
signal fin, fout : std_logic_vector(c_fifo_width-1 downto 0);
signal fin, fout : std_logic_vector(c_fifo_width-1 downto 0);
signal pre_dvalid : std_logic;
signal pre_eof : std_logic;
......@@ -42,6 +42,7 @@ architecture rtl of xwb_fabric_source is
signal post_dvalid, post_eof, post_bytesel, post_sof : std_logic;
signal err_status : t_wrf_status_reg;
signal cyc_int : std_logic;
begin -- rtl
......@@ -64,36 +65,37 @@ begin -- rtl
g_data_width => c_fifo_width,
g_size => 16)
port map (
rst_n_i => rst_n_i,
clk_i => clk_i,
d_i => fin,
we_i => we,
q_o => fout,
rd_i => rd,
almost_full_o => full,
q_valid_o => q_valid);
post_sof <= fout(21);
post_eof <= fout(20);
rst_n_i => rst_n_i,
clk_i => clk_i,
d_i => fin,
we_i => we,
q_o => fout,
rd_i => rd,
almost_full_o => full,
q_valid_o => q_valid);
post_sof <= fout(21);
post_eof <= fout(20);
post_dvalid <= fout(18);
p_gen_cyc : process(clk_i)
begin
if rising_edge(clk_i) then
if rst_n_i = '0' then
src_o.cyc <= '0';
cyc_int <= '0';
else
if(src_i.stall = '0') then
if(src_i.stall = '0' and q_valid = '1') then
if(post_sof = '1')then
src_o.cyc <= '1';
cyc_int <= '1';
elsif(post_eof = '1') then
src_o.cyc <= '0';
cyc_int <= '0';
end if;
end if;
end if;
end if;
end process;
src_o.cyc <= cyc_int or post_sof;
src_o.we <= '1';
src_o.stb <= post_dvalid and q_valid;
src_o.sel <= '1' & not fout(19);
......@@ -125,7 +127,7 @@ entity wb_fabric_source is
src_we_o : out std_logic;
src_stall_i : in std_logic;
src_ack_i : in std_logic;
src_err_i : in std_logic;
src_err_i : in std_logic;
-- Decoded & buffered fabric
addr_i : in std_logic_vector(1 downto 0);
......@@ -157,13 +159,13 @@ architecture wrapper of wb_fabric_source is
dreq_o : out std_logic);
end component;
signal src_in : t_wrf_source_in;
signal src_in : t_wrf_source_in;
signal src_out : t_wrf_source_out;
begin -- wrapper
U_Wrapped_Source: xwb_fabric_source
U_Wrapped_Source : xwb_fabric_source
port map (
clk_i => clk_i,
rst_n_i => rst_n_i,
......@@ -180,14 +182,14 @@ begin -- wrapper
src_cyc_o <= src_out.cyc;
src_stb_o <= src_out.stb;
src_we_o <= src_out.we;
src_we_o <= src_out.we;
src_sel_o <= src_out.sel;
src_adr_o <= src_out.adr;
src_dat_o <= src_out.dat;
src_in.rty <= '0';
src_in.err <= src_err_i;
src_in.ack <= src_ack_i;
src_in.rty <= '0';
src_in.err <= src_err_i;
src_in.ack <= src_ack_i;
src_in.stall <= src_stall_i;
......
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