From 78281e50772f94770b09eb2295e4fbf7b2de33a4 Mon Sep 17 00:00:00 2001
From: Mathias Kreider <m.kreider@gsi.de>
Date: Mon, 8 Apr 2013 11:42:21 +0200
Subject: [PATCH] interfaces for V2

---
 hdl/eb_slave_core/eb_internals_pkg.vhd | 48 +++++++++++++++++++++++
 hdl/eb_slave_core/eb_rx_fsm.vhd        | 54 ++++++++++++++++++++++++++
 2 files changed, 102 insertions(+)
 create mode 100644 hdl/eb_slave_core/eb_internals_pkg.vhd
 create mode 100644 hdl/eb_slave_core/eb_rx_fsm.vhd

diff --git a/hdl/eb_slave_core/eb_internals_pkg.vhd b/hdl/eb_slave_core/eb_internals_pkg.vhd
new file mode 100644
index 0000000..b0e4b14
--- /dev/null
+++ b/hdl/eb_slave_core/eb_internals_pkg.vhd
@@ -0,0 +1,48 @@
+library IEEE;
+--! Standard packages
+use IEEE.std_logic_1164.all;
+use IEEE.numeric_std.all;
+
+--! Additional library
+library work;
+use work.wishbone_pkg.all;
+
+
+package eb_internals_pkg is 
+
+subtype t_tag is std_logic_vector(1 downto 0);
+
+constant c_tag_wb_drop : t_tag := "00";
+constant c_tag_wb_copy : t_tag := "01";
+constant c_tag_cfg_req : t_tag := "10";
+constant c_tag_pass_on : t_tag := "11";
+
+
+component eb_rx_fsm is
+  port (
+    clk_i         : in  std_logic;
+    rstn_i        : in  std_logic;
+    
+    rx_cyc_i      : in  std_logic;
+    rx_stb_i      : in  std_logic;
+    rx_dat_i      : in  std_logic_vector(31 downto 0);
+    rx_stall_o    : out std_logic;
+    
+    mux_empty_i   : in  std_logic;
+    
+    tag_stb_o     : out std_logic;
+    tag_dat_o     : out t_tag;
+    tag_stall_i   : in  std_logic;
+    
+    pass_stb_o    : out std_logic;
+    pass_dat_o    : out std_logic_vector(31 downto 0); 
+    pass_stall_i  : in  std_logic;
+    
+    cfg_o         : out t_wishbone_master_out;  -- cyc always hi
+    cfg_stall_i   : in  std_logic;
+    
+    wb_o          : out t_wishbone_master_out;
+    wb_stall_i    : in  std_logic );
+end component;
+
+end package;
diff --git a/hdl/eb_slave_core/eb_rx_fsm.vhd b/hdl/eb_slave_core/eb_rx_fsm.vhd
new file mode 100644
index 0000000..d71c4b9
--- /dev/null
+++ b/hdl/eb_slave_core/eb_rx_fsm.vhd
@@ -0,0 +1,54 @@
+library IEEE;
+--! Standard packages
+use IEEE.std_logic_1164.all;
+use IEEE.numeric_std.all;
+
+--! Additional library
+library work;
+--! Additional packages
+use work.eb_internals_pkg.all;
+use work.wishbone_pkg.all;
+
+
+entity eb_rx_fsm is
+  port (
+    clk_i         : in  std_logic;
+    rstn_i        : in  std_logic;
+    
+    rx_cyc_i      : in  std_logic;
+    rx_stb_i      : in  std_logic;
+    rx_dat_i      : in  std_logic_vector(31 downto 0);
+    rx_stall_o    : out std_logic;
+    
+    mux_empty_i   : in  std_logic;
+    
+    tag_stb_o     : out std_logic;
+    tag_dat_o     : out t_tag;
+    tag_stall_i   : in  std_logic;
+    
+    pass_stb_o    : out std_logic;
+    pass_dat_o    : out std_logic_vector(31 downto 0); 
+    pass_stall_i  : in  std_logic;
+    
+    cfg_o         : out t_wishbone_master_out;  -- cyc always hi
+    cfg_stall_i   : in  std_logic;
+    
+    wb_o          : out t_wishbone_master_out;
+    wb_stall_i    : in  std_logic );
+end entity;
+
+architecture behavioral of eb_rx_fsm is
+
+signal 
+
+
+
+begin
+
+
+
+
+end architecture;
+
+
+
-- 
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