--- /dev/null
+LIBRARY IEEE;
+USE IEEE.std_logic_1164.ALL;
+USE IEEE.std_logic_ARITH.ALL;
+USE IEEE.std_logic_UNSIGNED.ALL;
+
+library work;
+use work.trb_net_std.all;
+use work.trb_net_components.all;
+use work.trb_net_gbe_components.all;
+use work.med_sync_define_RS.all;
+
+entity gbe_med_fifo is
+ generic(
+ LINKS_ACTIVE : std_logic_vector(3 downto 0) := "1111"
+ );
+ port(
+ RESET : in std_logic;
+ GSR_N : in std_logic;
+ CLK_SYS : in std_logic;
+ CLK_125 : in std_logic;
+ CLK_125_RX : out std_logic_vector(3 downto 0);
+ -- FIFO interface RX
+ FIFO_DATA_OUT : out std_logic_vector(4 * 8 - 1 downto 0);
+ FIFO_FULL_IN : in std_logic_vector(3 downto 0);
+ FIFO_WR_OUT : out std_logic_vector(3 downto 0);
+ FRAME_REQ_IN : in std_logic_vector(3 downto 0);
+ FRAME_ACK_OUT : out std_logic_vector(3 downto 0);
+ FRAME_AVAIL_OUT : out std_logic_vector(3 downto 0);
+ FRAME_START_OUT : out std_logic_vector(3 downto 0);
+ -- FIFO interface TX
+ FIFO_FULL_OUT : out std_logic_vector(3 downto 0);
+ FIFO_WR_IN : in std_logic_vector(3 downto 0);
+ FIFO_DATA_IN : in std_logic_vector(4 * 8 - 1 downto 0);
+ FRAME_START_IN : in std_logic_vector(3 downto 0);
+ -- SFP Connection
+ SD_PRSNT_N_IN : in std_logic_vector(3 downto 0) := (others => '0');
+ SD_LOS_IN : in std_logic_vector(3 downto 0) := (others => '0');
+ SD_TXDIS_OUT : out std_logic_vector(3 downto 0);
+ -- SerDes control
+ TX_PLOL_LOL_OUT : out std_logic;
+ TX_PCS_RST_IN : in std_logic;
+ RX_LINK_READY_OUT : out std_logic_vector(3 downto 0);
+ TX_LINK_READY_IN : in std_logic;
+ -- Debug
+ STATUS_OUT : out std_logic_vector(4 * 8 - 1 downto 0);
+ DEBUG_OUT : out std_logic_vector(63 downto 0)
+ );
+end entity gbe_med_fifo;
+
+architecture RTL of gbe_med_fifo is
+
+ component sgmii_gbe_pcs42
+ port(
+ rst_n : in std_logic;
+ signal_detect : in std_logic;
+ gbe_mode : in std_logic;
+ sgmii_mode : in std_logic;
+ operational_rate : in std_logic_vector(1 downto 0);
+ debug_link_timer_short : in std_logic;
+
+ force_isolate : in std_logic;
+ force_loopback : in std_logic;
+ force_unidir : in std_logic;
+
+ rx_compensation_err : out std_logic;
+
+ ctc_drop_flag : out std_logic;
+ ctc_add_flag : out std_logic;
+ an_link_ok : out std_logic;
+
+ tx_clk_125 : in std_logic;
+ tx_clock_enable_source : out std_logic;
+ tx_clock_enable_sink : in std_logic;
+ tx_d : in std_logic_vector(7 downto 0);
+ tx_en : in std_logic;
+ tx_er : in std_logic;
+ rx_clk_125 : in std_logic;
+ rx_clock_enable_source : out std_logic;
+ rx_clock_enable_sink : in std_logic;
+ rx_d : out std_logic_vector(7 downto 0);
+ rx_dv : out std_logic;
+ rx_er : out std_logic;
+ col : out std_logic;
+ crs : out std_logic;
+ tx_data : out std_logic_vector(7 downto 0);
+ tx_kcntl : out std_logic;
+ tx_disparity_cntl : out std_logic;
+
+ xmit_autoneg : out std_logic;
+
+ serdes_recovered_clk : in std_logic;
+ rx_data : in std_logic_vector(7 downto 0);
+ rx_even : in std_logic;
+ rx_kcntl : in std_logic;
+ rx_disp_err : in std_logic;
+ rx_cv_err : in std_logic;
+ rx_err_decode_mode : in std_logic;
+ mr_an_complete : out std_logic;
+ mr_page_rx : out std_logic;
+ mr_lp_adv_ability : out std_logic_vector(15 downto 0);
+ mr_main_reset : in std_logic;
+ mr_an_enable : in std_logic;
+ mr_restart_an : in std_logic;
+ mr_adv_ability : in std_logic_vector(15 downto 0)
+ );
+ end component;
+
+ component tsmac41
+ port(
+ --------------- clock and reset port declarations ------------------
+ hclk : in std_logic;
+ txmac_clk : in std_logic;
+ rxmac_clk : in std_logic;
+ reset_n : in std_logic;
+ ------------------- Input signals to the GMII ----------------
+ rxd : in std_logic_vector(7 downto 0);
+ rx_dv : in std_logic;
+ rx_er : in std_logic;
+ -------------------- Input signals to the CPU I/F -------------------
+ haddr : in std_logic_vector(7 downto 0);
+ hdatain : in std_logic_vector(7 downto 0);
+ hcs_n : in std_logic;
+ hwrite_n : in std_logic;
+ hread_n : in std_logic;
+ ---------------- Input signals to the Tx MAC FIFO I/F ---------------
+ tx_fifodata : in std_logic_vector(7 downto 0);
+ tx_fifoavail : in std_logic;
+ tx_fifoeof : in std_logic;
+ tx_fifoempty : in std_logic;
+ tx_sndpaustim : in std_logic_vector(15 downto 0);
+ tx_sndpausreq : in std_logic;
+ tx_fifoctrl : in std_logic;
+ ---------------- Input signals to the Rx MAC FIFO I/F ---------------
+ rx_fifo_full : in std_logic;
+ ignore_pkt : in std_logic;
+ -------------------- Output signals from the GMII -----------------------
+ txd : out std_logic_vector(7 downto 0);
+ tx_en : out std_logic;
+ tx_er : out std_logic;
+ -------------------- Output signals from the CPU I/F -------------------
+ hdataout : out std_logic_vector(7 downto 0);
+ hdataout_en_n : out std_logic;
+ hready_n : out std_logic;
+ cpu_if_gbit_en : out std_logic;
+ ---------------- Output signals from the Tx MAC FIFO I/F ---------------
+ tx_macread : out std_logic;
+ tx_discfrm : out std_logic;
+ tx_staten : out std_logic;
+ tx_done : out std_logic;
+ tx_statvec : out std_logic_vector(30 downto 0);
+ ---------------- Output signals from the Rx MAC FIFO I/F ---------------
+ rx_fifo_error : out std_logic;
+ rx_stat_vector : out std_logic_vector(31 downto 0);
+ rx_dbout : out std_logic_vector(7 downto 0);
+ rx_write : out std_logic;
+ rx_stat_en : out std_logic;
+ rx_eof : out std_logic;
+ rx_error : out std_logic
+ );
+ end component;
+
+ signal sd_rx_clk : std_logic_vector(3 downto 0);
+ signal sd_tx_kcntl : std_logic_vector(3 downto 0);
+ signal sd_tx_data : std_logic_vector(4 * 8 - 1 downto 0);
+ signal xmit : std_logic_vector(3 downto 0);
+ signal sd_tx_correct_disp : std_logic_vector(3 downto 0);
+ signal sd_rx_data : std_logic_vector(4 * 8 - 1 downto 0);
+ signal sd_rx_kcntl : std_logic_vector(3 downto 0);
+ signal sd_rx_disp_error : std_logic_vector(3 downto 0);
+ signal sd_rx_cv_error : std_logic_vector(3 downto 0);
+ signal lsm_status : std_logic_vector(3 downto 0);
+ signal rx_clk_en : std_logic_vector(3 downto 0);
+ signal tx_clk_en : std_logic_vector(3 downto 0);
+ signal operational_rate : std_logic_vector(4 * 2 - 1 downto 0);
+ signal an_complete : std_logic_vector(3 downto 0);
+ signal mr_page_rx : std_logic_vector(3 downto 0);
+ signal mr_lp_adv_ability : std_logic_vector(4 * 16 - 1 downto 0);
+ signal mr_main_reset : std_logic_vector(3 downto 0);
+ signal mr_restart_an : std_logic_vector(3 downto 0);
+ signal mr_adv_ability : std_logic_vector(4 * 16 - 1 downto 0);
+ signal mr_an_enable : std_logic_vector(3 downto 0);
+ signal an_link_ok : std_logic_vector(3 downto 0);
+ signal pcs_rxd : std_logic_vector(4 * 8 - 1 downto 0);
+ signal pcs_rx_en : std_logic_vector(3 downto 0);
+ signal pcs_rx_er : std_logic_vector(3 downto 0);
+ signal pcs_txd : std_logic_vector(4 * 8 - 1 downto 0);
+ signal pcs_tx_en : std_logic_vector(3 downto 0);
+ signal pcs_tx_er : std_logic_vector(3 downto 0);
+ signal tsm_hdataout_en_n : std_logic_vector(3 downto 0);
+ signal tsm_hready_n : std_logic_vector(3 downto 0);
+ signal tsm_hread_n : std_logic_vector(3 downto 0);
+ signal tsm_hwrite_n : std_logic_vector(3 downto 0);
+ signal tsm_hcs_n : std_logic_vector(3 downto 0);
+ signal tsm_hdata : std_logic_vector(4 * 8 - 1 downto 0);
+ signal tsm_haddr : std_logic_vector(4 * 8 - 1 downto 0);
+
+ signal synced_rst : std_logic;
+
+ signal powerup_ch : std_logic_vector(3 downto 0);
+ signal link_rx_ready : std_logic_vector(3 downto 0);
+ signal rx_los_low : std_logic_vector(3 downto 0);
+ signal rx_cdr_lol : std_logic_vector(3 downto 0);
+ signal rx_pcs_rst : std_logic_vector(3 downto 0);
+ signal rx_pcs_rst_q : std_logic_vector(3 downto 0);
+ signal rx_serdes_rst : std_logic_vector(3 downto 0);
+ signal rx_serdes_rst_q : std_logic_vector(3 downto 0);
+ signal init_quad : std_logic;
+ signal tx_plol_lol : std_logic;
+
+ signal debug : std_logic_vector(63 downto 0);
+
+ -- for replacing register interface
+ signal delay_q : std_logic_vector(4 * 8 - 1 downto 0);
+ signal pulse : std_logic_vector(3 downto 0);
+
+ signal SD_RXD_P_IN, SD_RXD_N_IN, SD_TXD_P_OUT, SD_TXD_N_OUT : std_logic_vector(3 downto 0);
+
+ signal mac_tx_data : std_logic_vector(4 * 8 - 1 downto 0);
+ signal mac_tx_read : std_logic_vector(3 downto 0);
+ signal mac_tx_done : std_logic_vector(3 downto 0);
+ signal mac_fifoeof : std_logic_vector(3 downto 0);
+ signal mac_fifoavail : std_logic_vector(3 downto 0);
+ signal mac_fifoempty : std_logic_vector(3 downto 0);
+
+ signal mac_rx_data : std_logic_vector(4 * 8 - 1 downto 0);
+ signal mac_rx_wr : std_logic_vector(3 downto 0);
+ signal mac_rx_eof : std_logic_vector(3 downto 0);
+ signal mac_rx_err : std_logic_vector(3 downto 0);
+ signal mac_rx_fifofull : std_logic_vector(3 downto 0);
+ signal mac_ready_conf : std_logic_vector(3 downto 0);
+ signal mac_reconf : std_logic_vector(3 downto 0);
+ signal link_active : std_logic_vector(3 downto 0);
+
+ signal led_timer : unsigned(19 downto 0);
+ signal led_timer_done_x : std_logic;
+ signal led_timer_done : std_logic;
+ signal led_activity_x : std_logic_vector(3 downto 0);
+ signal led_activity : std_logic_vector(4 * 2 - 1 downto 0);
+
+begin
+
+ init_quad <= not GSR_N;
+
+ gbe_serdes: entity serdes_gbe_4ch_ds
+ port map(
+ -- CH0 --
+ hdinp_ch0 => SD_RXD_P_IN(0),
+ hdinn_ch0 => SD_RXD_N_IN(0),
+ hdoutp_ch0 => SD_TXD_P_OUT(0),
+ hdoutn_ch0 => SD_TXD_N_OUT(0),
+ rxiclk_ch0 => sd_rx_clk(0),
+ txiclk_ch0 => CLK_125,
+ rx_full_clk_ch0 => sd_rx_clk(0),
+ rx_half_clk_ch0 => open,
+ tx_full_clk_ch0 => open,
+ tx_half_clk_ch0 => open,
+ fpga_rxrefclk_ch0 => CLK_125,
+ txdata_ch0 => sd_tx_data(7 downto 0),
+ tx_k_ch0 => sd_tx_kcntl(0),
+ xmit_ch0 => xmit(0),
+ tx_disp_correct_ch0 => sd_tx_correct_disp(0),
+ rxdata_ch0 => sd_rx_data(7 downto 0),
+ rx_k_ch0 => sd_rx_kcntl(0),
+ rx_disp_err_ch0 => sd_rx_disp_error(0),
+ rx_cv_err_ch0 => sd_rx_cv_error(0),
+ rx_serdes_rst_ch0_c => rx_serdes_rst(0),
+ sb_felb_ch0_c => '0',
+ sb_felb_rst_ch0_c => '0',
+ tx_pcs_rst_ch0_c => TX_PCS_RST_IN,
+ tx_pwrup_ch0_c => powerup_ch(0),
+ rx_pcs_rst_ch0_c => rx_pcs_rst(0),
+ rx_pwrup_ch0_c => powerup_ch(0),
+ rx_los_low_ch0_s => rx_los_low(0),
+ lsm_status_ch0_s => lsm_status(0),
+ rx_cdr_lol_ch0_s => rx_cdr_lol(0),
+ -- CH1 --
+ hdinp_ch1 => SD_RXD_P_IN(1),
+ hdinn_ch1 => SD_RXD_N_IN(1),
+ hdoutp_ch1 => SD_TXD_P_OUT(1),
+ hdoutn_ch1 => SD_TXD_N_OUT(1),
+ rxiclk_ch1 => sd_rx_clk(1),
+ txiclk_ch1 => CLK_125,
+ rx_full_clk_ch1 => sd_rx_clk(1),
+ rx_half_clk_ch1 => open,
+ tx_full_clk_ch1 => open,
+ tx_half_clk_ch1 => open,
+ fpga_rxrefclk_ch1 => CLK_125,
+ txdata_ch1 => sd_tx_data(15 downto 8),
+ tx_k_ch1 => sd_tx_kcntl(1),
+ xmit_ch1 => xmit(1),
+ tx_disp_correct_ch1 => sd_tx_correct_disp(1),
+ rxdata_ch1 => sd_rx_data(15 downto 8),
+ rx_k_ch1 => sd_rx_kcntl(1),
+ rx_disp_err_ch1 => sd_rx_disp_error(1),
+ rx_cv_err_ch1 => sd_rx_cv_error(1),
+ rx_serdes_rst_ch1_c => rx_serdes_rst(1),
+ sb_felb_ch1_c => '0',
+ sb_felb_rst_ch1_c => '0',
+ tx_pcs_rst_ch1_c => TX_PCS_RST_IN,
+ tx_pwrup_ch1_c => powerup_ch(1),
+ rx_pcs_rst_ch1_c => rx_pcs_rst(1),
+ rx_pwrup_ch1_c => powerup_ch(1),
+ rx_los_low_ch1_s => rx_los_low(1),
+ lsm_status_ch1_s => lsm_status(1),
+ rx_cdr_lol_ch1_s => rx_cdr_lol(1),
+ -- CH2 --
+ hdinp_ch2 => SD_RXD_P_IN(2),
+ hdinn_ch2 => SD_RXD_N_IN(2),
+ hdoutp_ch2 => SD_TXD_P_OUT(2),
+ hdoutn_ch2 => SD_TXD_N_OUT(2),
+ rxiclk_ch2 => sd_rx_clk(2),
+ txiclk_ch2 => CLK_125,
+ rx_full_clk_ch2 => sd_rx_clk(2),
+ rx_half_clk_ch2 => open,
+ tx_full_clk_ch2 => open,
+ tx_half_clk_ch2 => open,
+ fpga_rxrefclk_ch2 => CLK_125,
+ txdata_ch2 => sd_tx_data(23 downto 16),
+ tx_k_ch2 => sd_tx_kcntl(2),
+ xmit_ch2 => xmit(2),
+ tx_disp_correct_ch2 => sd_tx_correct_disp(2),
+ rxdata_ch2 => sd_rx_data(23 downto 16),
+ rx_k_ch2 => sd_rx_kcntl(2),
+ rx_disp_err_ch2 => sd_rx_disp_error(2),
+ rx_cv_err_ch2 => sd_rx_cv_error(2),
+ rx_serdes_rst_ch2_c => rx_serdes_rst(2),
+ sb_felb_ch2_c => '0',
+ sb_felb_rst_ch2_c => '0',
+ tx_pcs_rst_ch2_c => TX_PCS_RST_IN,
+ tx_pwrup_ch2_c => powerup_ch(2),
+ rx_pcs_rst_ch2_c => rx_pcs_rst(2),
+ rx_pwrup_ch2_c => powerup_ch(2),
+ rx_los_low_ch2_s => rx_los_low(2),
+ lsm_status_ch2_s => lsm_status(2),
+ rx_cdr_lol_ch2_s => rx_cdr_lol(2),
+ -- CH3 --
+ hdinp_ch3 => SD_RXD_P_IN(3),
+ hdinn_ch3 => SD_RXD_N_IN(3),
+ hdoutp_ch3 => SD_TXD_P_OUT(3),
+ hdoutn_ch3 => SD_TXD_N_OUT(3),
+ rxiclk_ch3 => sd_rx_clk(3),
+ txiclk_ch3 => CLK_125,
+ rx_full_clk_ch3 => sd_rx_clk(3),
+ rx_half_clk_ch3 => open,
+ tx_full_clk_ch3 => open,
+ tx_half_clk_ch3 => open,
+ fpga_rxrefclk_ch3 => CLK_125,
+ txdata_ch3 => sd_tx_data(31 downto 24),
+ tx_k_ch3 => sd_tx_kcntl(3),
+ xmit_ch3 => xmit(3),
+ tx_disp_correct_ch3 => sd_tx_correct_disp(3),
+ rxdata_ch3 => sd_rx_data(31 downto 24),
+ rx_k_ch3 => sd_rx_kcntl(3),
+ rx_disp_err_ch3 => sd_rx_disp_error(3),
+ rx_cv_err_ch3 => sd_rx_cv_error(3),
+ rx_serdes_rst_ch3_c => rx_serdes_rst(3),
+ sb_felb_ch3_c => '0',
+ sb_felb_rst_ch3_c => '0',
+ tx_pcs_rst_ch3_c => TX_PCS_RST_IN,
+ tx_pwrup_ch3_c => powerup_ch(3),
+ rx_pcs_rst_ch3_c => rx_pcs_rst(3),
+ rx_pwrup_ch3_c => powerup_ch(3),
+ rx_los_low_ch3_s => rx_los_low(3),
+ lsm_status_ch3_s => lsm_status(3),
+ rx_cdr_lol_ch3_s => rx_cdr_lol(3),
+ ---- Miscallaneous ports
+ fpga_txrefclk => CLK_125,
+ tx_serdes_rst_c => '0',
+ tx_pll_lol_qd_s => tx_plol_lol,
+ rst_qd_c => init_quad,
+ serdes_rst_qd_c => '0',
+ tx_sync_qd_c => '0'
+ );
+
+ TX_PLOL_LOL_OUT <= tx_plol_lol;
+
+ CHANNEL_GEN : for i in 0 to 3 generate
+
+ CHANNEL_ACTIVE_GEN : if LINKS_ACTIVE(i) = '1' generate
+
+ powerup_ch(i) <= '1';
+ SD_TXDIS_OUT(i) <= '0';
+
+ -- RSL for RX of SerDes, based on extRSL logic
+ -- CAVEAT: reset signals MUST BE sync'ed to recovered RX clock!
+ THE_MAIN_RX_RST: main_rx_reset_RS
+ port map(
+ CLEAR => init_quad,
+ CLK_REF => CLK_125,
+ CDR_LOL_IN => rx_cdr_lol(i),
+ CV_IN => sd_rx_cv_error(i),
+ LSM_IN => lsm_status(i),
+ LOS_IN => rx_los_low(i),
+ WAP_ZERO_IN => '1', -- not needed here
+ -- outputs
+ WAP_REQ_OUT => open, -- not needed here
+ RX_SERDES_RST_OUT => rx_serdes_rst(i), -- CLK_REF based
+ RX_PCS_RST_OUT => rx_pcs_rst(i), -- CLK_REF based
+ LINK_RX_READY_OUT => link_rx_ready(i), -- CLK_REF based
+ STATE_OUT => open
+ );
+
+ -- reset signals for RX SerDes need to be sync'ed to real RX clock for ECP5
+ SYNC_RST_SIGS: entity work.signal_sync
+ generic map( WIDTH => 2 )
+ port map(
+ RESET => '0',
+ CLK0 => sd_rx_clk(i),
+ CLK1 => sd_rx_clk(i),
+ D_IN(0) => rx_pcs_rst(i),
+ D_IN(1) => rx_serdes_rst(i),
+ D_OUT(0) => rx_pcs_rst_q(i),
+ D_OUT(1) => rx_serdes_rst_q(i)
+ );
+
+ CLK_125_RX(i) <= sd_rx_clk(i);
+
+ -- SGMII core
+ SGMII_GBE_PCS : sgmii_gbe_pcs42
+ port map(
+ rst_n => GSR_N,
+ signal_detect => link_rx_ready(i),
+ gbe_mode => '1',
+ sgmii_mode => '0',
+ operational_rate => operational_rate((i + 1) * 2 - 1 downto i * 2),
+ debug_link_timer_short => '0',
+ force_isolate => '0',
+ force_loopback => '0',
+ force_unidir => '0',
+ rx_compensation_err => open,
+ ctc_drop_flag => open,
+ ctc_add_flag => open,
+ an_link_ok => open,
+ -- MAC interface
+ tx_clk_125 => CLK_125,
+ tx_clock_enable_source => tx_clk_en(i),
+ tx_clock_enable_sink => tx_clk_en(i),
+ tx_d => pcs_txd((i + 1) * 8 - 1 downto i * 8), -- TX data from MAC
+ tx_en => pcs_tx_en(i), -- TX data enable from MAC
+ tx_er => pcs_tx_er(i), -- TX error from MAC
+ rx_clk_125 => CLK_125,
+ rx_clock_enable_source => rx_clk_en(i),
+ rx_clock_enable_sink => rx_clk_en(i),
+ rx_d => pcs_rxd((i + 1 ) * 8 - 1 downto i * 8), -- RX data to MAC
+ rx_dv => pcs_rx_en(i), -- RX data enable to MAC
+ rx_er => pcs_rx_er(i), -- RX error to MAC
+ col => open,
+ crs => open,
+ -- SerDes interface
+ tx_data => sd_tx_data((i + 1) * 8 - 1 downto i * 8), -- TX data to SerDes
+ tx_kcntl => sd_tx_kcntl(i), -- TX komma control to SerDes
+ tx_disparity_cntl => sd_tx_correct_disp(i), -- idle parity state control in IPG (to SerDes)
+ xmit_autoneg => xmit(i),
+ serdes_recovered_clk => sd_rx_clk(i), -- 125MHz recovered from receive bit stream
+ rx_data => sd_rx_data((i + 1) * 8 - 1 downto i * 8), -- RX data from SerDes
+ rx_kcntl => sd_rx_kcntl(i), -- RX komma control from SerDes
+ rx_err_decode_mode => '0', -- receive error control mode fixed to normal
+ rx_even => '0', -- unused (receive error control mode = normal, tie to GND)
+ rx_disp_err => sd_rx_disp_error(i), -- RX disparity error from SerDes
+ rx_cv_err => sd_rx_cv_error(i), -- RX code violation error from SerDes
+ -- Autonegotiation stuff
+ mr_an_complete => an_complete(i),
+ mr_page_rx => mr_page_rx(i),
+ mr_lp_adv_ability => mr_lp_adv_ability((i + 1) * 16 - 1 downto i * 16),
+ mr_main_reset => mr_main_reset(i),
+ mr_an_enable => mr_an_enable(i),
+ mr_restart_an => mr_restart_an(i),
+ mr_adv_ability => mr_adv_ability((i + 1) * 16 - 1 downto i * 16)
+ );
+
+ operational_rate((i + 1) * 2 - 1 downto i * 2) <= b"10";
+
+ mr_main_reset(i) <= init_quad;
+ mr_restart_an(i) <= pulse(i);
+ mr_an_enable(i) <= link_rx_ready(i);
+ mr_adv_ability((i + 1) * 16 - 1 downto i * 16) <= x"0020";
+
+ SYNC_PROC: process( CLK_125 )
+ begin
+ if( rising_edge(CLK_125) ) then
+ delay_q((i + 1) * 8 - 1 downto i * 8) <= delay_q((i + 1) * 8 - 2 downto i * 8) & link_rx_ready(i);
+ end if;
+ end process SYNC_PROC;
+
+ pulse(i) <= not delay_q((i + 1) * 8 - 1) and delay_q((i + 1) * 8 - 2);
+
+ -- TSMAC core
+ MAC: tsmac41
+ port map(
+ ----------------- clock and reset port declarations ------------------
+ hclk => CLK_125, -- BUG: can be CLK_125
+ txmac_clk => CLK_125,
+ rxmac_clk => CLK_125,
+ reset_n => GSR_N,
+ ------------------- Input signals to the GMII ----------------
+ rxd => pcs_rxd((i + 1) * 8 - 1 downto i * 8),
+ rx_dv => pcs_rx_en(i),
+ rx_er => pcs_rx_er(i),
+ -------------------- Input signals to the CPU I/F -------------------
+ haddr => tsm_haddr((i + 1) * 8 - 1 downto i * 8),
+ hdatain => tsm_hdata((i + 1) * 8 - 1 downto i * 8),
+ hcs_n => tsm_hcs_n(i),
+ hwrite_n => tsm_hwrite_n(i),
+ hread_n => tsm_hread_n(i),
+ ---------------- Input signals to the Tx MAC FIFO I/F ---------------
+ tx_fifodata => mac_tx_data((i + 1) * 8 - 1 downto i * 8),
+ tx_fifoavail => mac_fifoavail(i),
+ tx_fifoeof => mac_fifoeof(i),
+ tx_fifoempty => mac_fifoempty(i),
+ tx_sndpaustim => x"0000",
+ tx_sndpausreq => '0',
+ tx_fifoctrl => '0', -- always data frame
+ ---------------- Input signals to the Rx MAC FIFO I/F ---------------
+ rx_fifo_full => mac_rx_fifofull(i),
+ ignore_pkt => '0',
+ ---------------- Output signals from the GMII -----------------------
+ txd => pcs_txd((i + 1) * 8 - 1 downto i * 8),
+ tx_en => pcs_tx_en(i),
+ tx_er => pcs_tx_er(i),
+ ----------------- Output signals from the CPU I/F -------------------
+ hdataout => open,
+ hdataout_en_n => tsm_hdataout_en_n(i),
+ hready_n => tsm_hready_n(i),
+ cpu_if_gbit_en => open,
+ ------------- Output signals from the Tx MAC FIFO I/F ---------------
+ tx_macread => mac_tx_read(i),
+ tx_discfrm => open,
+ tx_staten => open,
+ tx_statvec => open,
+ tx_done => mac_tx_done(i),
+ ------------- Output signals from the Rx MAC FIFO I/F ---------------
+ rx_fifo_error => open,
+ rx_stat_vector => open,
+ rx_dbout => mac_rx_data((i + 1) * 8 - 1 downto i * 8),
+ rx_write => mac_rx_wr(i),
+ rx_stat_en => open,
+ rx_eof => mac_rx_eof(i),
+ rx_error => mac_rx_err(i)
+ );
+
+ -- responsible for loading the TSMAC registers
+ -- CAN BE OPTIMIZED
+ TSMAC_CONTROLLER : trb_net16_gbe_mac_control
+ port map(
+ CLK => CLK_125, -- BUG: can be CLK_125
+ RESET => RESET,
+ -- signals to/from main controller
+ MC_TSMAC_READY_OUT => mac_ready_conf(i),
+ MC_RECONF_IN => mac_reconf(i),
+ MC_GBE_EN_IN => '1',
+ MC_RX_DISCARD_FCS => '0',
+ MC_PROMISC_IN => '1',
+ MC_MAC_ADDR_IN => (others => '0'),
+ -- signal to/from Host interface of TriSpeed MAC
+ TSM_HADDR_OUT => tsm_haddr((i + 1) * 8 - 1 downto i * 8),
+ TSM_HDATA_OUT => tsm_hdata((i + 1) * 8 - 1 downto i * 8),
+ TSM_HCS_N_OUT => tsm_hcs_n(i),
+ TSM_HWRITE_N_OUT => tsm_hwrite_n(i),
+ TSM_HREAD_N_OUT => tsm_hread_n(i),
+ TSM_HREADY_N_IN => tsm_hready_n(i),
+ TSM_HDATA_EN_N_IN => tsm_hdataout_en_n(i),
+ -- Debug
+ DEBUG_OUT => open
+ );
+
+ -- initializes MAC after AN is complete
+ THE_FW_GBE_LSM: entity gbe_lsm
+ port map(
+ CLK => CLK_125, -- BUG: can be CLK_125
+ CLEAR => init_quad,
+ RESET => RESET,
+ --
+ MAC_AN_COMPLETE_IN => an_complete(i),
+ MAC_READY_CONF_IN => mac_ready_conf(i),
+ MAC_RECONF_OUT => mac_reconf(i),
+ --
+ LINK_ACTIVE_OUT => link_active(i),
+ --
+ DEBUG => open
+ );
+
+ -- RX ringbuffer
+ THE_FW_RB: entity rx_rb
+ port map(
+ CLK => CLK_125,
+ CLEAR => init_quad,
+ RESET => RESET,
+ -- MAC interface (RX)
+ MAC_RX_DATA_IN => mac_rx_data((i + 1) * 8 - 1 downto i * 8),
+ MAC_RX_WR_IN => mac_rx_wr(i),
+ MAC_RX_EOF_IN => mac_rx_eof(i),
+ MAC_RX_ERROR_IN => mac_rx_err(i),
+ MAC_RX_FIFOFULL_OUT => mac_rx_fifofull(i),
+ -- FIFO interface (TX)
+ FIFO_FULL_IN => FIFO_FULL_IN(i),
+ FIFO_WR_OUT => FIFO_WR_OUT(i),
+ FIFO_Q_OUT => FIFO_DATA_OUT((i + 1) * 8 - 1 downto i * 8),
+ FRAME_REQ_IN => FRAME_REQ_IN(i),
+ FRAME_ACK_OUT => FRAME_ACK_OUT(i),
+ FRAME_AVAIL_OUT => FRAME_AVAIL_OUT(i),
+ FRAME_START_OUT => FRAME_START_OUT(i),
+ --
+ DEBUG => open
+ );
+
+ -- TX FIFO
+ THE_FW_FIFO: entity tx_fifo
+ port map(
+ CLK => CLK_125,
+ CLEAR => init_quad,
+ RESET => RESET,
+ -- MAC interface
+ MAC_TX_DATA_OUT => mac_tx_data((i + 1) * 8 - 1 downto i * 8),
+ MAC_TX_READ_IN => mac_tx_read(i),
+ MAC_FIFOEOF_OUT => mac_fifoeof(i),
+ MAC_FIFOEMPTY_OUT => mac_fifoempty(i),
+ MAC_FIFOAVAIL_OUT => mac_fifoavail(i),
+ MAC_TX_DONE_IN => mac_tx_done(i), -- not used
+ -- FIFO interface
+ FIFO_FULL_OUT => FIFO_FULL_OUT(i),
+ FIFO_WR_IN => FIFO_WR_IN(i),
+ FIFO_D_IN => FIFO_DATA_IN((i + 1) * 8 - 1 downto i * 8),
+ -- Link stuff
+ FRAME_START_IN => FRAME_START_IN(i),
+ LINK_ACTIVE_IN => an_complete(i),
+ --
+ DEBUG => open
+ );
+
+ -- LED connections, can be simplified by CE signal, to get rid of local counter instances
+ led_activity_x(i) <= pcs_rx_en(i) or pcs_tx_en(i);
+
+ THE_LED_ACT_PROC: process( CLK_125 )
+ begin
+ if( rising_edge(CLK_125) ) then
+ if( led_activity_x(i) = '1' ) then
+ led_activity((i + 1) * 2 - 2) <= '1';
+ end if;
+ if( led_timer_done = '1' ) then
+ led_activity((i + 1) * 2 - 1 downto (i + 1) * 2 - 2) <= led_activity((i + 1) * 2 - 2) & '0';
+ end if;
+ end if;
+ end process THE_LED_ACT_PROC;
+
+ -- Status signals
+ STATUS_OUT(i * 8 + 7) <= '0'; -- unused
+ STATUS_OUT(i * 8 + 6) <= link_active(i); -- link is active
+ STATUS_OUT(i * 8 + 5) <= led_activity((i + 1) * 2 - 1); -- long LED signal for activity
+ STATUS_OUT(i * 8 + 4) <= pcs_rx_en(i); -- SerDes RX activity
+ STATUS_OUT(i * 8 + 3) <= pcs_tx_en(i); -- SerDes TX activity
+ STATUS_OUT(i * 8 + 2) <= an_complete(i); -- GbE Autonegotiation completed
+ STATUS_OUT(i * 8 + 1) <= link_rx_ready(i); -- SerDes Rx channel operational
+ STATUS_OUT(i * 8 + 0) <= TX_LINK_READY_IN; -- SerDes Tx channel operational
+
+ end generate CHANNEL_ACTIVE_GEN;
+
+ CHANNEL_INACTIVE_GEN : if LINKS_ACTIVE(i) = '0' generate
+
+ powerup_ch(i) <= '0';
+ SD_TXDIS_OUT(i) <= '1';
+ rx_pcs_rst_q(i) <= '1';
+ rx_serdes_rst_q(i) <= '1';
+
+ -- Status signals
+ STATUS_OUT(i * 8 + 7) <= '0'; -- unused
+ STATUS_OUT(i * 8 + 6) <= '0'; -- link is active
+ STATUS_OUT(i * 8 + 5) <= '0'; -- long LED signal for activity
+ STATUS_OUT(i * 8 + 4) <= '0'; -- SerDes RX activity
+ STATUS_OUT(i * 8 + 3) <= '0'; -- SerDes TX activity
+ STATUS_OUT(i * 8 + 2) <= '0'; -- GbE Autonegotiation completed
+ STATUS_OUT(i * 8 + 1) <= '0'; -- SerDes Rx channel operational
+ STATUS_OUT(i * 8 + 0) <= '0'; -- SerDes Tx channel operational
+
+ end generate CHANNEL_INACTIVE_GEN;
+
+ end generate CHANNEL_GEN;
+
+ THE_LED_TIMER_PROC: process( CLK_125 )
+ begin
+ if( rising_edge(CLK_125) ) then
+ led_timer_done <= led_timer_done_x;
+ led_timer <= led_timer + 1;
+ end if;
+ end process THE_LED_TIMER_PROC;
+
+ led_timer_done_x <= '1' when (std_logic_vector(led_timer) = x"fffff") else '0';
+
+end architecture RTL;
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