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ashwin_men |
------------------------------------------------------------------------------
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-- user_logic.vhd - entity/architecture pair
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------------------------------------------------------------------------------
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--
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-- ***************************************************************************
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-- ** Copyright (c) 1995-2010 Xilinx, Inc. All rights reserved. **
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-- ** **
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-- ** Xilinx, Inc. **
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-- ** XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" **
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-- ** AS A COURTESY TO YOU, SOLELY FOR USE IN DEVELOPING PROGRAMS AND **
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-- ** SOLUTIONS FOR XILINX DEVICES. BY PROVIDING THIS DESIGN, CODE, **
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-- ** OR INFORMATION AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, **
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-- ** APPLICATION OR STANDARD, XILINX IS MAKING NO REPRESENTATION **
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-- ** THAT THIS IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT, **
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-- ** AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE **
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-- ** FOR YOUR IMPLEMENTATION. XILINX EXPRESSLY DISCLAIMS ANY **
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-- ** WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE **
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-- ** IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR **
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-- ** REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF **
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-- ** INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS **
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-- ** FOR A PARTICULAR PURPOSE. **
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-- ** **
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-- ***************************************************************************
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--
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------------------------------------------------------------------------------
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-- Filename: user_logic.vhd
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-- Version: 1.00.a
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-- Description: User logic.
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-- Date: Fri Jun 17 14:13:01 2011 (by Create and Import Peripheral Wizard)
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-- VHDL Standard: VHDL'93
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------------------------------------------------------------------------------
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-- Naming Conventions:
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-- active low signals: "*_n"
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-- clock signals: "clk", "clk_div#", "clk_#x"
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-- reset signals: "rst", "rst_n"
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-- generics: "C_*"
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-- user defined types: "*_TYPE"
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-- state machine next state: "*_ns"
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-- state machine current state: "*_cs"
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-- combinatorial signals: "*_com"
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-- pipelined or register delay signals: "*_d#"
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-- counter signals: "*cnt*"
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-- clock enable signals: "*_ce"
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-- internal version of output port: "*_i"
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-- device pins: "*_pin"
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-- ports: "- Names begin with Uppercase"
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-- processes: "*_PROCESS"
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-- component instantiations: "<ENTITY_>I_<#|FUNC>"
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------------------------------------------------------------------------------
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-- DO NOT EDIT BELOW THIS LINE --------------------
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library ieee;
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use ieee.std_logic_1164.all;
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use ieee.std_logic_arith.all;
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use ieee.std_logic_unsigned.all;
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library proc_common_v3_00_a;
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use proc_common_v3_00_a.proc_common_pkg.all;
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-- DO NOT EDIT ABOVE THIS LINE --------------------
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--USER libraries added here
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------------------------------------------------------------------------------
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-- Entity section
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------------------------------------------------------------------------------
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-- Definition of Generics:
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-- C_SLV_DWIDTH -- Slave interface data bus width
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-- C_NUM_REG -- Number of software accessible registers
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--
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-- Definition of Ports:
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-- Bus2IP_Clk -- Bus to IP clock
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-- Bus2IP_Reset -- Bus to IP reset
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-- Bus2IP_Data -- Bus to IP data bus
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-- Bus2IP_BE -- Bus to IP byte enables
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-- Bus2IP_RdCE -- Bus to IP read chip enable
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-- Bus2IP_WrCE -- Bus to IP write chip enable
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-- IP2Bus_Data -- IP to Bus data bus
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-- IP2Bus_RdAck -- IP to Bus read transfer acknowledgement
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-- IP2Bus_WrAck -- IP to Bus write transfer acknowledgement
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-- IP2Bus_Error -- IP to Bus error response
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------------------------------------------------------------------------------
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entity user_logic is
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generic
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(
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-- ADD USER GENERICS BELOW THIS LINE ---------------
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--USER generics added here
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CHIPSCOPE : boolean := false;
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DATA_WIDTH : natural := 32;
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-- ADD USER GENERICS ABOVE THIS LINE ---------------
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-- DO NOT EDIT BELOW THIS LINE ---------------------
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-- Bus protocol parameters, do not add to or delete
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C_SLV_DWIDTH : integer := 32;
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C_NUM_REG : integer := 8
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-- DO NOT EDIT ABOVE THIS LINE ---------------------
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);
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port
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(
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-- ADD USER PORTS BELOW THIS LINE ------------------
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user_logic_ila_control : in std_logic_vector (35 downto 0);
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cmd_layer_ila_control : in std_logic_vector (35 downto 0);
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sata_rx_frame_ila_control : in std_logic_vector (35 downto 0);
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sata_tx_frame_ila_control : in std_logic_vector (35 downto 0);
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sata_phy_ila_control : in std_logic_vector (35 downto 0);
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oob_control_ila_control : in std_logic_vector (35 downto 0);
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scrambler_ila_control : in std_logic_vector (35 downto 0);
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descrambler_ila_control : in std_logic_vector (35 downto 0);
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-----------------------------------------------------
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--TILE0_REFCLK_PAD_P_IN : in std_logic; -- MGTCLKA, clocks GTP_X0Y0-2
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--TILE0_REFCLK_PAD_N_IN : in std_logic; -- MGTCLKA
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TXP0_OUT : out std_logic;
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TXN0_OUT : out std_logic;
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RXP0_IN : in std_logic;
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RXN0_IN : in std_logic;
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TILE0_PLLLKDET_OUT_N : out std_logic;
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DCMLOCKED_OUT : out std_logic;
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LINKUP_led : out std_logic;
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GEN2_led : out std_logic;
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RESET : in std_logic;
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--GTX_RESET_IN : in std_logic;
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--new_cmd_in : in std_logic;
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CLKIN_150 : in std_logic;
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SATA_CORE_DOUT : out std_logic_vector(0 to 31);
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SATA_CORE_DOUT_WE : out std_logic;
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SATA_CORE_CLK_OUT : out std_logic;
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SATA_CORE_DIN : in std_logic_vector(0 to 31);
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SATA_CORE_DIN_WE : in std_logic;
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SATA_CORE_FULL : out std_logic;
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NPI_CORE_REQ_TYPE : out std_logic_vector (0 to 1);
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NPI_CORE_NEW_CMD : out std_logic;
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NPI_CORE_NUM_RD_BYTES : out std_logic_vector (0 to 31);
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NPI_CORE_NUM_WR_BYTES : out std_logic_vector (0 to 31);
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NPI_CORE_INIT_WR_ADDR : out std_logic_vector (0 to 31);
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NPI_CORE_INIT_RD_ADDR : out std_logic_vector (0 to 31);
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NPI_CORE_READY_FOR_CMD: in std_logic;
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--USER ports added here
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-- ADD USER PORTS ABOVE THIS LINE ------------------
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-- DO NOT EDIT BELOW THIS LINE ---------------------
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-- Bus protocol ports, do not add to or delete
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Bus2IP_Clk : in std_logic;
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Bus2IP_Reset : in std_logic;
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Bus2IP_Data : in std_logic_vector(0 to C_SLV_DWIDTH-1);
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Bus2IP_BE : in std_logic_vector(0 to C_SLV_DWIDTH/8-1);
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Bus2IP_RdCE : in std_logic_vector(0 to C_NUM_REG-1);
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Bus2IP_WrCE : in std_logic_vector(0 to C_NUM_REG-1);
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IP2Bus_Data : out std_logic_vector(0 to C_SLV_DWIDTH-1);
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IP2Bus_RdAck : out std_logic;
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IP2Bus_WrAck : out std_logic;
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IP2Bus_Error : out std_logic
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-- DO NOT EDIT ABOVE THIS LINE ---------------------
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);
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attribute SIGIS : string;
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attribute SIGIS of Bus2IP_Clk : signal is "CLK";
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attribute SIGIS of Bus2IP_Reset : signal is "RST";
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end entity user_logic;
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------------------------------------------------------------------------------
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-- Architecture section
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------------------------------------------------------------------------------
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architecture IMP of user_logic is
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--USER signal declarations added here, as needed for user logic
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------------------------------------------
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-- Signals for user logic slave model s/w accessible register example
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------------------------------------------
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signal ctrl_reg : std_logic_vector(0 to C_SLV_DWIDTH-1);
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signal cmd_reg : std_logic_vector(0 to C_SLV_DWIDTH-1);
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signal status_reg : std_logic_vector(0 to C_SLV_DWIDTH-1);
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signal sector_addr_reg : std_logic_vector(0 to C_SLV_DWIDTH-1);
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signal sector_count_reg : std_logic_vector(0 to C_SLV_DWIDTH-1);
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signal sector_timer_reg : std_logic_vector(0 to C_SLV_DWIDTH-1);
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signal npi_rd_addr_reg : std_logic_vector(0 to C_SLV_DWIDTH-1);
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signal npi_wr_addr_reg : std_logic_vector(0 to C_SLV_DWIDTH-1);
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signal slv_reg_write_sel : std_logic_vector(0 to 7);
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signal slv_reg_read_sel : std_logic_vector(0 to 7);
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signal slv_ip2bus_data : std_logic_vector(0 to C_SLV_DWIDTH-1);
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signal slv_read_ack : std_logic;
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signal slv_write_ack : std_logic;
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constant SECTOR_NDWORDS : integer := 128; -- 128 DWORDS / 512 Byte Sector
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constant READ_DMA_CMD : std_logic_vector(1 downto 0) := "01";
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constant WRITE_DMA_CMD : std_logic_vector(1 downto 0) := "10";
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constant NPI_READ_REQ : std_logic_vector(1 downto 0) := "01";
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constant NPI_WRITE_REQ : std_logic_vector(1 downto 0) := "10";
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constant BYTES_PER_SECTOR : integer := 512;
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signal sw_reset : std_logic;
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signal sata_phy_clk : std_logic;
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signal GTXRESET : std_logic;
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signal LINKUP_led_i : std_logic;
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signal new_cmd_in : std_logic;
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signal new_cmd : std_logic;
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signal cmd_started : std_logic;
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signal cmd_type : std_logic_vector(1 downto 0);
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signal ready_for_cmd : std_logic;
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signal sata_dout : std_logic_vector(31 downto 0);
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signal sata_dout_re : std_logic;
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signal sector_count_int : integer;
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signal sector_count : std_logic_vector(31 downto 0);
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signal sector_addr : std_logic_vector(31 downto 0);
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signal read_fifo_empty : std_logic;
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signal sata_core_full_i : std_logic;
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signal sata_user_data_clk_in_i : std_logic;
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-- NPI
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signal npi_ready_for_cmd : std_logic;
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signal npi_new_cmd : std_logic;
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signal npi_req_type : std_logic_vector(1 downto 0);
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signal npi_num_rd_bytes : std_logic_vector(31 downto 0);
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signal npi_init_rd_addr : std_logic_vector(31 downto 0);
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signal npi_num_wr_bytes : std_logic_vector(31 downto 0);
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signal npi_init_wr_addr : std_logic_vector(31 downto 0);
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signal npi_new_cmd_next : std_logic;
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signal npi_req_type_next : std_logic_vector(1 downto 0);
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signal npi_num_rd_bytes_next : std_logic_vector(31 downto 0);
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signal npi_init_rd_addr_next : std_logic_vector(31 downto 0);
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signal npi_num_wr_bytes_next : std_logic_vector(31 downto 0);
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signal npi_init_wr_addr_next : std_logic_vector(31 downto 0);
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-----------------------------------------------------------------------------
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-- TestBench FSM Declaration (curr and next states)
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-----------------------------------------------------------------------------
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type TEST_FSM_TYPE is (wait_for_cmd, wait_for_ready_low, wait_for_ack,
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dead
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);
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signal test_fsm_curr, test_fsm_next : TEST_FSM_TYPE := wait_for_cmd;
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signal test_fsm_value : std_logic_vector (0 to 3);
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-- USER FIFO DECLARATION
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component user_fifo
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port (
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wr_clk: IN std_logic;
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rd_clk: IN std_logic;
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rst: IN std_logic;
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din: IN std_logic_VECTOR(31 downto 0);
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wr_en: IN std_logic;
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rd_en: IN std_logic;
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dout: OUT std_logic_VECTOR(31 downto 0);
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full: OUT std_logic;
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prog_full: OUT std_logic;
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empty: OUT std_logic);
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end component;
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component user_logic_ila
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port (
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control : in std_logic_vector(35 downto 0);
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clk : in std_logic;
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trig0 : in std_logic_vector(3 downto 0);
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trig1 : in std_logic_vector(31 downto 0);
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trig2 : in std_logic_vector(31 downto 0);
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trig3 : in std_logic_vector(31 downto 0);
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trig4 : in std_logic_vector(31 downto 0);
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trig5 : in std_logic_vector(7 downto 0)
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);
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end component;
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begin
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--USER logic implementation added here
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------------------------------------------
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-- Example code to read/write user logic slave model s/w accessible registers
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--
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-- Note:
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-- The example code presented here is to show you one way of reading/writing
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-- software accessible registers implemented in the user logic slave model.
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-- Each bit of the Bus2IP_WrCE/Bus2IP_RdCE signals is configured to correspond
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-- to one software accessible register by the top level template. For example,
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-- if you have four 32 bit software accessible registers in the user logic,
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-- you are basically operating on the following memory mapped registers:
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--
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-- Bus2IP_WrCE/Bus2IP_RdCE Memory Mapped Register
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-- "1000" C_BASEADDR + 0x0
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-- "0100" C_BASEADDR + 0x4
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-- "0010" C_BASEADDR + 0x8
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-- "0001" C_BASEADDR + 0xC
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--
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------------------------------------------
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slv_reg_write_sel <= Bus2IP_WrCE(0 to 7);
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slv_reg_read_sel <= Bus2IP_RdCE(0 to 7);
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slv_write_ack <= Bus2IP_WrCE(0) or Bus2IP_WrCE(1) or Bus2IP_WrCE(2) or Bus2IP_WrCE(3) or Bus2IP_WrCE(4) or Bus2IP_WrCE(5) or Bus2IP_WrCE(6) or Bus2IP_WrCE(7);
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slv_read_ack <= Bus2IP_RdCE(0) or Bus2IP_RdCE(1) or Bus2IP_RdCE(2) or Bus2IP_RdCE(3) or Bus2IP_RdCE(4) or Bus2IP_RdCE(5) or Bus2IP_RdCE(6) or Bus2IP_RdCE(7);
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-- implement slave model software accessible register(s)
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SLAVE_REG_WRITE_PROC : process( Bus2IP_Clk ) is
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begin
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298 |
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if Bus2IP_Clk'event and Bus2IP_Clk = '1' then
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if Bus2IP_Reset = '1' then
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ctrl_reg <= (others => '0');
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cmd_reg <= (others => '0');
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sector_addr_reg <= (others => '0');
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sector_count_reg <= (others => '0');
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npi_rd_addr_reg <= (others => '0');
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npi_wr_addr_reg <= (others => '0');
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|
else
|
307 |
|
|
case slv_reg_write_sel is
|
308 |
|
|
when "10000000" =>
|
309 |
|
|
for byte_index in 0 to (C_SLV_DWIDTH/8)-1 loop
|
310 |
|
|
if ( Bus2IP_BE(byte_index) = '1' ) then
|
311 |
|
|
ctrl_reg(byte_index*8 to byte_index*8+7) <= Bus2IP_Data(byte_index*8 to byte_index*8+7);
|
312 |
|
|
end if;
|
313 |
|
|
end loop;
|
314 |
|
|
when "01000000" =>
|
315 |
|
|
for byte_index in 0 to (C_SLV_DWIDTH/8)-1 loop
|
316 |
|
|
if ( Bus2IP_BE(byte_index) = '1' ) then
|
317 |
|
|
cmd_reg(byte_index*8 to byte_index*8+7) <= Bus2IP_Data(byte_index*8 to byte_index*8+7);
|
318 |
|
|
end if;
|
319 |
|
|
end loop;
|
320 |
|
|
when "00010000" =>
|
321 |
|
|
for byte_index in 0 to (C_SLV_DWIDTH/8)-1 loop
|
322 |
|
|
if ( Bus2IP_BE(byte_index) = '1' ) then
|
323 |
|
|
sector_addr_reg(byte_index*8 to byte_index*8+7) <= Bus2IP_Data(byte_index*8 to byte_index*8+7);
|
324 |
|
|
end if;
|
325 |
|
|
end loop;
|
326 |
|
|
when "00001000" =>
|
327 |
|
|
for byte_index in 0 to (C_SLV_DWIDTH/8)-1 loop
|
328 |
|
|
if ( Bus2IP_BE(byte_index) = '1' ) then
|
329 |
|
|
sector_count_reg(byte_index*8 to byte_index*8+7) <= Bus2IP_Data(byte_index*8 to byte_index*8+7);
|
330 |
|
|
end if;
|
331 |
|
|
end loop;
|
332 |
|
|
when "00000010" =>
|
333 |
|
|
for byte_index in 0 to (C_SLV_DWIDTH/8)-1 loop
|
334 |
|
|
if ( Bus2IP_BE(byte_index) = '1' ) then
|
335 |
|
|
npi_rd_addr_reg(byte_index*8 to byte_index*8+7) <= Bus2IP_Data(byte_index*8 to byte_index*8+7);
|
336 |
|
|
end if;
|
337 |
|
|
end loop;
|
338 |
|
|
when "00000001" =>
|
339 |
|
|
for byte_index in 0 to (C_SLV_DWIDTH/8)-1 loop
|
340 |
|
|
if ( Bus2IP_BE(byte_index) = '1' ) then
|
341 |
|
|
npi_wr_addr_reg(byte_index*8 to byte_index*8+7) <= Bus2IP_Data(byte_index*8 to byte_index*8+7);
|
342 |
|
|
end if;
|
343 |
|
|
end loop;
|
344 |
|
|
when others => null;
|
345 |
|
|
end case;
|
346 |
|
|
end if;
|
347 |
|
|
end if;
|
348 |
|
|
end process SLAVE_REG_WRITE_PROC;
|
349 |
|
|
|
350 |
|
|
-- implement slave model software accessible register(s) read mux
|
351 |
|
|
SLAVE_REG_READ_PROC : process(slv_reg_read_sel, ctrl_reg, cmd_reg, status_reg, sector_addr_reg,
|
352 |
|
|
sector_count_reg, sector_timer_reg, npi_rd_addr_reg, npi_wr_addr_reg) is
|
353 |
|
|
begin
|
354 |
|
|
|
355 |
|
|
case slv_reg_read_sel is
|
356 |
|
|
when "10000000" => slv_ip2bus_data <= ctrl_reg;
|
357 |
|
|
when "01000000" => slv_ip2bus_data <= cmd_reg;
|
358 |
|
|
when "00100000" => slv_ip2bus_data <= status_reg;
|
359 |
|
|
when "00010000" => slv_ip2bus_data <= sector_addr_reg;
|
360 |
|
|
when "00001000" => slv_ip2bus_data <= sector_count_reg;
|
361 |
|
|
when "00000100" => slv_ip2bus_data <= sector_timer_reg;
|
362 |
|
|
when "00000010" => slv_ip2bus_data <= npi_rd_addr_reg;
|
363 |
|
|
when "00000001" => slv_ip2bus_data <= npi_wr_addr_reg;
|
364 |
|
|
when others => slv_ip2bus_data <= (others => '0');
|
365 |
|
|
end case;
|
366 |
|
|
|
367 |
|
|
end process SLAVE_REG_READ_PROC;
|
368 |
|
|
|
369 |
|
|
|
370 |
|
|
|
371 |
|
|
------------------------------------------
|
372 |
|
|
-- Example code to drive IP to Bus signals
|
373 |
|
|
------------------------------------------
|
374 |
|
|
IP2Bus_Data <= slv_ip2bus_data when slv_read_ack = '1' else
|
375 |
|
|
(others => '0');
|
376 |
|
|
|
377 |
|
|
IP2Bus_WrAck <= slv_write_ack;
|
378 |
|
|
IP2Bus_RdAck <= slv_read_ack;
|
379 |
|
|
IP2Bus_Error <= '0';
|
380 |
|
|
|
381 |
|
|
-------------------------------------------
|
382 |
|
|
-- SATA --
|
383 |
|
|
-------------------------------------------
|
384 |
|
|
sw_reset <= ctrl_reg(31); -- Software Reset
|
385 |
|
|
-- Testbench Signals
|
386 |
|
|
new_cmd_in <= ctrl_reg(30);
|
387 |
|
|
cmd_type <= cmd_reg(30 to 31);
|
388 |
|
|
sector_addr <= sector_addr_reg;
|
389 |
|
|
sector_count_int <= conv_integer(sector_count_reg);
|
390 |
|
|
sector_count <= sector_count_reg;
|
391 |
|
|
status_reg(31) <= ready_for_cmd;
|
392 |
|
|
status_reg(30) <= LINKUP_led_i;
|
393 |
|
|
status_reg(29) <= npi_ready_for_cmd;
|
394 |
|
|
sata_dout_re <= '1' when (read_fifo_empty = '0') else '0';
|
395 |
|
|
|
396 |
|
|
-- De-Assert new_cmd after 1 clk cycle
|
397 |
|
|
REG_PROC: process (sata_phy_clk)
|
398 |
|
|
begin
|
399 |
|
|
if ((sata_phy_clk'event) and (sata_phy_clk = '1')) then
|
400 |
|
|
if (GTXRESET = '1') then
|
401 |
|
|
new_cmd <= '0';
|
402 |
|
|
cmd_started <= '0';
|
403 |
|
|
elsif(new_cmd_in = '0') then
|
404 |
|
|
cmd_started <= '0';
|
405 |
|
|
elsif (new_cmd_in = '1' and cmd_started = '0') then
|
406 |
|
|
new_cmd <= '1';
|
407 |
|
|
cmd_started <= '1';
|
408 |
|
|
elsif (cmd_started = '1') then
|
409 |
|
|
new_cmd <= '0';
|
410 |
|
|
end if;
|
411 |
|
|
end if;
|
412 |
|
|
end process REG_PROC;
|
413 |
|
|
|
414 |
|
|
-----------------------------------------------------------------------------
|
415 |
|
|
-- PROCESS: TEST_FSM_VALUE_PROC
|
416 |
|
|
-- PURPOSE: ChipScope State Indicator Signal
|
417 |
|
|
-----------------------------------------------------------------------------
|
418 |
|
|
TEST_FSM_VALUE_PROC : process (test_fsm_curr) is
|
419 |
|
|
begin
|
420 |
|
|
case (test_fsm_curr) is
|
421 |
|
|
when wait_for_cmd => test_fsm_value <= x"0";
|
422 |
|
|
when wait_for_ready_low => test_fsm_value <= x"1";
|
423 |
|
|
when wait_for_ack => test_fsm_value <= x"2";
|
424 |
|
|
when dead => test_fsm_value <= x"3";
|
425 |
|
|
when others => test_fsm_value <= x"4";
|
426 |
|
|
end case;
|
427 |
|
|
end process TEST_FSM_VALUE_PROC;
|
428 |
|
|
|
429 |
|
|
-----------------------------------------------------------------------------
|
430 |
|
|
-- PROCESS: TEST_FSM_STATE_PROC
|
431 |
|
|
-- PURPOSE: Registering Signals and Next State
|
432 |
|
|
-----------------------------------------------------------------------------
|
433 |
|
|
TEST_FSM_STATE_PROC: process (sata_phy_clk)
|
434 |
|
|
begin
|
435 |
|
|
if ((sata_phy_clk'event) and (sata_phy_clk = '1')) then
|
436 |
|
|
if (GTXRESET = '1') then
|
437 |
|
|
--Initializing internal signals
|
438 |
|
|
npi_new_cmd <= '0';
|
439 |
|
|
npi_req_type <= (others => '0');
|
440 |
|
|
npi_num_rd_bytes <= (others => '0');
|
441 |
|
|
npi_init_rd_addr <= (others => '0');
|
442 |
|
|
npi_num_wr_bytes <= (others => '0');
|
443 |
|
|
npi_init_wr_addr <= (others => '0');
|
444 |
|
|
npi_ready_for_cmd <= '0';
|
445 |
|
|
test_fsm_curr <= wait_for_cmd;
|
446 |
|
|
else
|
447 |
|
|
-- Register all Current Signals to their _next Signals
|
448 |
|
|
npi_new_cmd <= npi_new_cmd_next;
|
449 |
|
|
npi_req_type <= npi_req_type_next;
|
450 |
|
|
npi_num_rd_bytes <= npi_num_rd_bytes_next;
|
451 |
|
|
npi_init_rd_addr <= npi_init_rd_addr_next;
|
452 |
|
|
npi_num_wr_bytes <= npi_num_wr_bytes_next;
|
453 |
|
|
npi_init_wr_addr <= npi_init_wr_addr_next;
|
454 |
|
|
npi_ready_for_cmd <= NPI_CORE_READY_FOR_CMD;
|
455 |
|
|
test_fsm_curr <= test_fsm_next;
|
456 |
|
|
end if;
|
457 |
|
|
end if;
|
458 |
|
|
end process TEST_FSM_STATE_PROC;
|
459 |
|
|
|
460 |
|
|
-----------------------------------------------------------------------------
|
461 |
|
|
-- PROCESS: TEST_FSM_LOGIC_PROC
|
462 |
|
|
-- PURPOSE: Registering Signals and Next State
|
463 |
|
|
-----------------------------------------------------------------------------
|
464 |
|
|
TEST_FSM_LOGIC_PROC : process (test_fsm_curr, new_cmd
|
465 |
|
|
) is
|
466 |
|
|
begin
|
467 |
|
|
-- Register _next to current signals
|
468 |
|
|
test_fsm_next <= test_fsm_curr;
|
469 |
|
|
npi_new_cmd_next <= npi_new_cmd;
|
470 |
|
|
npi_req_type_next <= npi_req_type;
|
471 |
|
|
npi_num_rd_bytes_next <= npi_num_rd_bytes;
|
472 |
|
|
npi_init_rd_addr_next <= npi_init_rd_addr;
|
473 |
|
|
npi_num_wr_bytes_next <= npi_num_wr_bytes;
|
474 |
|
|
npi_init_wr_addr_next <= npi_init_wr_addr;
|
475 |
|
|
|
476 |
|
|
---------------------------------------------------------------------------
|
477 |
|
|
-- Finite State Machine
|
478 |
|
|
---------------------------------------------------------------------------
|
479 |
|
|
case (test_fsm_curr) is
|
480 |
|
|
|
481 |
|
|
-- x0
|
482 |
|
|
when wait_for_cmd =>
|
483 |
|
|
if (new_cmd = '1') then
|
484 |
|
|
test_fsm_next <= wait_for_ready_low;
|
485 |
|
|
end if;
|
486 |
|
|
|
487 |
|
|
-- x1
|
488 |
|
|
when wait_for_ready_low =>
|
489 |
|
|
if (ready_for_cmd = '0') then
|
490 |
|
|
if (cmd_type = WRITE_DMA_CMD) then
|
491 |
|
|
npi_req_type_next <= NPI_READ_REQ;
|
492 |
|
|
npi_num_rd_bytes_next <= conv_std_logic_vector((sector_count_int * BYTES_PER_SECTOR), 32);
|
493 |
|
|
npi_init_rd_addr_next <= npi_rd_addr_reg;
|
494 |
|
|
else
|
495 |
|
|
npi_req_type_next <= NPI_WRITE_REQ;
|
496 |
|
|
npi_num_wr_bytes_next <= conv_std_logic_vector((sector_count_int * BYTES_PER_SECTOR), 32);
|
497 |
|
|
npi_init_wr_addr_next <= npi_wr_addr_reg;
|
498 |
|
|
end if;
|
499 |
|
|
if (npi_ready_for_cmd = '1') then
|
500 |
|
|
npi_new_cmd_next <= '1';
|
501 |
|
|
end if;
|
502 |
|
|
test_fsm_next <= wait_for_ack;
|
503 |
|
|
end if;
|
504 |
|
|
|
505 |
|
|
-- x2
|
506 |
|
|
when wait_for_ack =>
|
507 |
|
|
if (ready_for_cmd = '1') then
|
508 |
|
|
npi_new_cmd_next <= '0';
|
509 |
|
|
test_fsm_next <= wait_for_cmd;
|
510 |
|
|
end if;
|
511 |
|
|
|
512 |
|
|
-- x3
|
513 |
|
|
when dead =>
|
514 |
|
|
test_fsm_next <= dead;
|
515 |
|
|
|
516 |
|
|
-- x4
|
517 |
|
|
when others =>
|
518 |
|
|
test_fsm_next <= dead;
|
519 |
|
|
|
520 |
|
|
end case;
|
521 |
|
|
end process TEST_FSM_LOGIC_PROC;
|
522 |
|
|
|
523 |
|
|
NPI_CORE_REQ_TYPE <= npi_req_type;
|
524 |
|
|
NPI_CORE_NEW_CMD <= npi_new_cmd;
|
525 |
|
|
NPI_CORE_NUM_RD_BYTES <= npi_num_rd_bytes;
|
526 |
|
|
NPI_CORE_NUM_WR_BYTES <= npi_num_wr_bytes;
|
527 |
|
|
NPI_CORE_INIT_WR_ADDR <= npi_init_wr_addr;
|
528 |
|
|
NPI_CORE_INIT_RD_ADDR <= npi_init_rd_addr;
|
529 |
|
|
|
530 |
|
|
-------------------------------------------
|
531 |
|
|
-- Sata Command Layer Module Instance
|
532 |
|
|
------------------------------------------
|
533 |
|
|
-- Output to NPI
|
534 |
|
|
SATA_CORE_DOUT <= sata_dout;
|
535 |
|
|
SATA_CORE_DOUT_WE <= sata_dout_re;
|
536 |
|
|
SATA_CORE_CLK_OUT <= sata_phy_clk;
|
537 |
|
|
SATA_CORE_FULL <= sata_core_full_i;
|
538 |
|
|
-- Output to NPI
|
539 |
|
|
|
540 |
|
|
------------------------------------------
|
541 |
|
|
-- Sata Link Layer Module Instance
|
542 |
|
|
------------------------------------------
|
543 |
|
|
--GTXRESET <= GTX_RESET_IN or RESET;
|
544 |
|
|
GTXRESET <= sw_reset or RESET;
|
545 |
|
|
LINKUP_led <= LINKUP_led_i;
|
546 |
|
|
|
547 |
|
|
SATA_CORE_TOP_i: entity work.sata_core_top
|
548 |
|
|
generic map (
|
549 |
|
|
CHIPSCOPE => CHIPSCOPE,
|
550 |
|
|
DATA_WIDTH => DATA_WIDTH
|
551 |
|
|
)
|
552 |
|
|
port map(
|
553 |
|
|
-- Clock and Reset Signals
|
554 |
|
|
CLKIN_150 => CLKIN_150 , --GTX Ref Clk
|
555 |
|
|
reset => GTXRESET,
|
556 |
|
|
-- ChipScope ILA / Trigger Signals
|
557 |
|
|
cmd_layer_ila_control => cmd_layer_ila_control,
|
558 |
|
|
sata_rx_frame_ila_control => sata_rx_frame_ila_control ,
|
559 |
|
|
sata_tx_frame_ila_control => sata_tx_frame_ila_control ,
|
560 |
|
|
oob_control_ila_control => oob_control_ila_control,
|
561 |
|
|
sata_phy_ila_control => sata_phy_ila_control,
|
562 |
|
|
scrambler_ila_control => scrambler_ila_control,
|
563 |
|
|
descrambler_ila_control => descrambler_ila_control,
|
564 |
|
|
---------------------------------------
|
565 |
|
|
-- SATA Interface -----
|
566 |
|
|
-- Command, Control and Status --
|
567 |
|
|
ready_for_cmd => ready_for_cmd,
|
568 |
|
|
new_cmd => new_cmd,
|
569 |
|
|
cmd_type => cmd_type,
|
570 |
|
|
sector_count => sector_count,
|
571 |
|
|
sector_addr => sector_addr,
|
572 |
|
|
-- Data and User Clock --
|
573 |
|
|
sata_din => SATA_CORE_DIN,
|
574 |
|
|
sata_din_we => SATA_CORE_DIN_WE,
|
575 |
|
|
sata_core_full => sata_core_full_i,
|
576 |
|
|
sata_dout => sata_dout,
|
577 |
|
|
sata_dout_re => sata_dout_re,
|
578 |
|
|
sata_core_empty => read_fifo_empty,
|
579 |
|
|
SATA_USER_DATA_CLK_IN => sata_user_data_clk_in_i,
|
580 |
|
|
SATA_USER_DATA_CLK_OUT => sata_phy_clk,
|
581 |
|
|
|
582 |
|
|
-- Timer --
|
583 |
|
|
sata_timer => sector_timer_reg,
|
584 |
|
|
-- Sata Phy Signals
|
585 |
|
|
--REFCLK_PAD_P_IN => TILE0_REFCLK_PAD_P_IN,
|
586 |
|
|
--REFCLK_PAD_N_IN => TILE0_REFCLK_PAD_N_IN,
|
587 |
|
|
TXP0_OUT => TXP0_OUT,
|
588 |
|
|
TXN0_OUT => TXN0_OUT,
|
589 |
|
|
RXP0_IN => RXP0_IN,
|
590 |
|
|
RXN0_IN => RXN0_IN,
|
591 |
|
|
PLLLKDET_OUT_N => TILE0_PLLLKDET_OUT_N,
|
592 |
|
|
DCMLOCKED_OUT => DCMLOCKED_OUT,
|
593 |
|
|
LINKUP => LINKUP_led_i
|
594 |
|
|
);
|
595 |
|
|
|
596 |
|
|
|
597 |
|
|
USER_LOGIC_ILA_i : user_logic_ila
|
598 |
|
|
port map (
|
599 |
|
|
control => user_logic_ila_control,
|
600 |
|
|
clk => sata_phy_clk,
|
601 |
|
|
trig0 => test_fsm_value,
|
602 |
|
|
trig1 => SATA_CORE_DIN,
|
603 |
|
|
trig2 => (others => '0'),
|
604 |
|
|
trig3 => (others => '0'),
|
605 |
|
|
trig4 => (others => '0'),
|
606 |
|
|
trig5(0) => new_cmd,
|
607 |
|
|
trig5(1) => SATA_CORE_DIN_WE,
|
608 |
|
|
trig5(2) => sata_core_full_i,
|
609 |
|
|
trig5(3) => ready_for_cmd,
|
610 |
|
|
trig5(4) => new_cmd,
|
611 |
|
|
trig5(5) => npi_ready_for_cmd,
|
612 |
|
|
trig5(6) => npi_new_cmd,
|
613 |
|
|
trig5(7) => sata_dout_re
|
614 |
|
|
);
|
615 |
|
|
|
616 |
|
|
end IMP;
|