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028bf19382
- more modular - two bits cominng from sys_clk elink config domain - drives the tx and rx from top level elink - from software you would probably write 2'b11 to reset both at same time
280 lines
9.7 KiB
Verilog
280 lines
9.7 KiB
Verilog
module elink(/*AUTOARG*/
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// Outputs
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rxo_wr_wait_p, rxo_wr_wait_n, rxo_rd_wait_p, rxo_rd_wait_n,
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txo_lclk_p, txo_lclk_n, txo_frame_p, txo_frame_n, txo_data_p,
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txo_data_n, chipid, cclk_p, cclk_n, chip_resetb, mailbox_not_empty,
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mailbox_full, timeout, rxwr_access, rxwr_packet, rxrd_access,
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rxrd_packet, rxrr_access, rxrr_packet, txwr_wait, txrd_wait,
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txrr_wait,
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// Inputs
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sys_reset, sys_clk, rxi_lclk_p, rxi_lclk_n, rxi_frame_p,
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rxi_frame_n, rxi_data_p, rxi_data_n, txi_wr_wait_p, txi_wr_wait_n,
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txi_rd_wait_p, txi_rd_wait_n, rxwr_wait, rxrd_wait, rxrr_wait,
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txwr_access, txwr_packet, txrd_access, txrd_packet, txrr_access,
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txrr_packet
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);
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parameter AW = 32; //native address width
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parameter DW = 32; //native data width
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parameter PW = 104; //packet width
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parameter ID = 12'h810; //epiphany ID for elink (ie addr[31:20])
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parameter IOSTD_ELINK = "LVDS_25";
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parameter ETYPE = 1;
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/****************************/
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/*CLOCK AND RESET */
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/****************************/
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input sys_reset; // reset for
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input sys_clk; // a single system clock for master/slave FIFOs
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/********************************/
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/*ELINK RECEIVER */
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/********************************/
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input rxi_lclk_p, rxi_lclk_n; // rx clock input
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input rxi_frame_p, rxi_frame_n; // rx frame signal
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input [7:0] rxi_data_p, rxi_data_n; // rx data
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output rxo_wr_wait_p,rxo_wr_wait_n; // rx write pushback output
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output rxo_rd_wait_p,rxo_rd_wait_n; // rx read pushback output
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/********************************/
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/*ELINK TRANSMITTER */
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/********************************/
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output txo_lclk_p, txo_lclk_n; // tx clock output
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output txo_frame_p, txo_frame_n; // tx frame signal
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output [7:0] txo_data_p, txo_data_n; // tx data
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input txi_wr_wait_p,txi_wr_wait_n; // tx write pushback input
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input txi_rd_wait_p,txi_rd_wait_n; // tx read pushback input
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/*************************************/
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/*EPIPHANY MISC INTERFACE (I/O PINS) */
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/*************************************/
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output [11:0] chipid; // chip id strap pins for epiphany
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output cclk_p, cclk_n; //chip clock
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output chip_resetb; // From etx of etx.v
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/*****************************/
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/*MAILBOX INTERRUPTS */
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/*****************************/
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output mailbox_not_empty;
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output mailbox_full;
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/*****************************/
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/* */
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/*****************************/
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output timeout;
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/*****************************/
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/*SYSTEM SIDE INTERFACE */
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/*****************************/
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//Master Write (from RX)
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output rxwr_access;
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output [PW-1:0] rxwr_packet;
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input rxwr_wait;
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//Master Read Request (from RX)
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output rxrd_access;
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output [PW-1:0] rxrd_packet;
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input rxrd_wait;
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//Slave Read Response (from RX)
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output rxrr_access;
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output [PW-1:0] rxrr_packet;
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input rxrr_wait;
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//Slave Write (to TX)
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input txwr_access;
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input [PW-1:0] txwr_packet;
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output txwr_wait;
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//Slave Read Request (to TX)
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input txrd_access;
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input [PW-1:0] txrd_packet;
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output txrd_wait;
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//Master Read Response (to TX)
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input txrr_access;
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input [PW-1:0] txrr_packet;
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output txrr_wait;
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/*#############################################*/
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/* END OF BLOCK INTERFACE */
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/*#############################################*/
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/*AUTOINPUT*/
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//wire
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wire erx_cfg_access; // To erx of erx.v
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wire [PW-1:0] erx_cfg_packet; // To erx of erx.v
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wire etx_cfg_wait; // To etx of etx.v
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wire [31:0] mi_rd_data;
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wire [31:0] mi_dout_ecfg;
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wire [31:0] mi_dout_embox;
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/*AUTOWIRE*/
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// Beginning of automatic wires (for undeclared instantiated-module outputs)
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wire erx_cfg_wait; // From erx of erx.v
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wire erx_soft_reset; // From ecfg_elink of ecfg_elink.v
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wire etx_cfg_access; // From etx of etx.v
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wire [PW-1:0] etx_cfg_packet; // From etx of etx.v
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wire etx_soft_reset; // From ecfg_elink of ecfg_elink.v
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wire txwr_gated_access; // From ecfg_elink of ecfg_elink.v
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// End of automatics
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/***********************************************************/
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/*CLOCK AND RESET CONFIG */
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/***********************************************************/
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defparam ecfg_elink.ID=ID;
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ecfg_elink ecfg_elink (.clk (sys_clk),
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.por_reset (sys_reset),
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.clk_config (),
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/*AUTOINST*/
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// Outputs
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.txwr_gated_access (txwr_gated_access),
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.etx_soft_reset (etx_soft_reset),
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.erx_soft_reset (erx_soft_reset),
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.chipid (chipid[11:0]),
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// Inputs
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.txwr_access (txwr_access),
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.txwr_packet (txwr_packet[PW-1:0]));
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/***********************************************************/
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/*RECEIVER */
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/***********************************************************/
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/*erx AUTO_TEMPLATE (
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.mi_dout (mi_rx_dout[]),
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.soft_reset (erx_soft_reset),
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);
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*/
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defparam erx.ID = ID;
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defparam erx.IOSTD_ELINK = IOSTD_ELINK;
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defparam erx.ETYPE = ETYPE;
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erx erx(
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/*AUTOINST*/
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// Outputs
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.rxo_wr_wait_p (rxo_wr_wait_p),
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.rxo_wr_wait_n (rxo_wr_wait_n),
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.rxo_rd_wait_p (rxo_rd_wait_p),
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.rxo_rd_wait_n (rxo_rd_wait_n),
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.rxwr_access (rxwr_access),
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.rxwr_packet (rxwr_packet[PW-1:0]),
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.rxrd_access (rxrd_access),
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.rxrd_packet (rxrd_packet[PW-1:0]),
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.rxrr_access (rxrr_access),
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.rxrr_packet (rxrr_packet[PW-1:0]),
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.erx_cfg_wait (erx_cfg_wait),
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.timeout (timeout),
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.mailbox_full (mailbox_full),
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.mailbox_not_empty (mailbox_not_empty),
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// Inputs
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.soft_reset (erx_soft_reset), // Templated
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.sys_reset (sys_reset),
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.sys_clk (sys_clk),
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.rxi_lclk_p (rxi_lclk_p),
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.rxi_lclk_n (rxi_lclk_n),
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.rxi_frame_p (rxi_frame_p),
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.rxi_frame_n (rxi_frame_n),
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.rxi_data_p (rxi_data_p[7:0]),
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.rxi_data_n (rxi_data_n[7:0]),
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.rxwr_wait (rxwr_wait),
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.rxrd_wait (rxrd_wait),
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.rxrr_wait (rxrr_wait),
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.erx_cfg_access (erx_cfg_access),
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.erx_cfg_packet (erx_cfg_packet[PW-1:0]));
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/***********************************************************/
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/*TRANSMITTER */
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/***********************************************************/
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/*etx AUTO_TEMPLATE (.mi_dout (mi_tx_dout[]),
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.emwr_\(.*\) (esaxi_emwr_\1[]),
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.emrq_\(.*\) (esaxi_emrq_\1[]),
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.emrr_\(.*\) (emaxi_emrr_\1[]),
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.soft_reset (etx_soft_reset),
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.txwr_access (txwr_gated_access),
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);
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*/
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defparam etx.ID = ID;
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defparam etx.IOSTD_ELINK = IOSTD_ELINK;
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defparam etx.ETYPE = ETYPE;
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etx etx(
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/*AUTOINST*/
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// Outputs
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.txo_lclk_p (txo_lclk_p),
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.txo_lclk_n (txo_lclk_n),
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.txo_frame_p (txo_frame_p),
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.txo_frame_n (txo_frame_n),
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.txo_data_p (txo_data_p[7:0]),
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.txo_data_n (txo_data_n[7:0]),
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.cclk_p (cclk_p),
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.cclk_n (cclk_n),
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.chip_resetb (chip_resetb),
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.txrd_wait (txrd_wait),
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.txwr_wait (txwr_wait),
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.txrr_wait (txrr_wait),
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.etx_cfg_access (etx_cfg_access),
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.etx_cfg_packet (etx_cfg_packet[PW-1:0]),
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// Inputs
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.sys_reset (sys_reset),
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.soft_reset (etx_soft_reset), // Templated
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.sys_clk (sys_clk),
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.txi_wr_wait_p (txi_wr_wait_p),
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.txi_wr_wait_n (txi_wr_wait_n),
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.txi_rd_wait_p (txi_rd_wait_p),
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.txi_rd_wait_n (txi_rd_wait_n),
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.txrd_access (txrd_access),
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.txrd_packet (txrd_packet[PW-1:0]),
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.txwr_access (txwr_gated_access), // Templated
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.txwr_packet (txwr_packet[PW-1:0]),
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.txrr_access (txrr_access),
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.txrr_packet (txrr_packet[PW-1:0]),
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.etx_cfg_wait (etx_cfg_wait));
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/***********************************************************/
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/*TX-->RX REGISTER INTERFACE CONNECTION */
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/***********************************************************/
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defparam ecfg_cdc.DW=104;
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defparam ecfg_cdc.DEPTH=32;
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fifo_cdc ecfg_cdc (// Outputs
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.wait_out (etx_cfg_wait),
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.access_out (erx_cfg_access),
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.packet_out (erx_cfg_packet[PW-1:0]),
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// Inputs
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.clk_in (tx_lclk_div4),
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.reset_in (sys_reset), //Fix this??
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.access_in (etx_cfg_access),
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.packet_in (etx_cfg_packet[PW-1:0]),
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.clk_out (rx_lclk_div4),
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.reset_out (sys_reset),
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.wait_in (erx_cfg_wait)
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);
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endmodule // elink
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// Local Variables:
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// verilog-library-directories:("." "../../erx/hdl" "../../etx/hdl" "../../memory/hdl")
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// End:
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/*
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Copyright (C) 2015 Adapteva, Inc.
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Contributed by Andreas Olofsson <andreas@adapteva.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.This program is distributed in the hope
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that it will be useful,but WITHOUT ANY WARRANTY; without even the implied
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warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details. You should have received a copy
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of the GNU General Public License along with this program (see the file
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COPYING). If not, see <http://www.gnu.org/licenses/>.
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*/
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