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//////////////////////////////////////////////////////////////////////

////                                                              ////

////  eth_defines.v                                               ////

////                                                              ////

////  This file is part of the Ethernet IP core project           ////

////  http://www.opencores.org/projects/ethmac/                   ////

////                                                              ////

////  Author(s):                                                  ////

////      - Igor Mohor (igorM@opencores.org)                      ////

////                                                              ////

////  All additional information is available in the Readme.txt   ////

////  file.                                                       ////

////                                                              ////

//////////////////////////////////////////////////////////////////////

////                                                              ////

//// Copyright (C) 2001, 2002 Authors                             ////

////                                                              ////

//// This source file may be used and distributed without         ////

//// restriction provided that this copyright statement is not    ////

//// removed from the file and that any derivative work contains  ////

//// the original copyright notice and the associated disclaimer. ////

////                                                              ////

//// This source file is free software; you can redistribute it   ////

//// and/or modify it under the terms of the GNU Lesser General   ////

//// Public License as published by the Free Software Foundation; ////

//// either version 2.1 of the License, or (at your option) any   ////

//// later version.                                               ////

////                                                              ////

//// This source is distributed in the hope that it will be       ////

//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////

//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////

//// PURPOSE.  See the GNU Lesser General Public License for more ////

//// details.                                                     ////

////                                                              ////

//// You should have received a copy of the GNU Lesser General    ////

//// Public License along with this source; if not, download it   ////

//// from http://www.opencores.org/lgpl.shtml                     ////

////                                                              ////

//////////////////////////////////////////////////////////////////////

//

// CVS Revision History

//

// $Log: not supported by cvs2svn $

// Revision 1.29  2002/11/19 18:13:49  mohor

// r_MiiMRst is not used for resetting the MIIM module. wb_rst used instead.

//

// Revision 1.28  2002/11/15 14:27:15  mohor

// Since r_Rst bit is not used any more, default value is changed to 0xa000.

//

// Revision 1.27  2002/11/01 18:19:34  mohor

// Defines fixed to use generic RAM by default.

//

// Revision 1.26  2002/10/24 18:53:03  mohor

// fpga define added.

//

// Revision 1.3  2002/10/11 16:57:54  igorm

// eth_defines.v tagged with rel_5 used.

//

// Revision 1.25  2002/10/10 16:47:44  mohor

// Defines changed to have ETH_ prolog.

// ETH_WISHBONE_B# define added.

//

// Revision 1.24  2002/10/10 16:33:11  mohor

// Bist added.

//

// Revision 1.23  2002/09/23 18:22:48  mohor

// Virtual Silicon RAM might be used in the ASIC implementation of the ethernet

// core.

//

// Revision 1.22  2002/09/04 18:36:49  mohor

// Defines for control registers added (ETH_TXCTRL and ETH_RXCTRL).

//

// Revision 1.21  2002/08/16 22:09:47  mohor

// Defines for register width added. mii_rst signal in MIIMODER register

// changed.

//

// Revision 1.20  2002/08/14 19:31:48  mohor

// Register TX_BD_NUM is changed so it contains value of the Tx buffer descriptors. No

// need to multiply or devide any more.

//

// Revision 1.19  2002/07/23 15:28:31  mohor

// Ram , used for BDs changed from generic_spram to eth_spram_256x32.

//

// Revision 1.18  2002/05/03 10:15:50  mohor

// Outputs registered. Reset changed for eth_wishbone module.

//

// Revision 1.17  2002/04/24 08:52:19  mohor

// Compiler directives added. Tx and Rx fifo size incremented. A "late collision"

// bug fixed.

//

// Revision 1.16  2002/03/19 12:53:29  mohor

// Some defines that are used in testbench only were moved to tb_eth_defines.v

// file.

//

// Revision 1.15  2002/02/26 16:11:32  mohor

// Number of interrupts changed

//

// Revision 1.14  2002/02/16 14:03:44  mohor

// Registered trimmed. Unused registers removed.

//

// Revision 1.13  2002/02/16 13:06:33  mohor

// EXTERNAL_DMA used instead of WISHBONE_DMA.

//

// Revision 1.12  2002/02/15 10:58:31  mohor

// Changed that were lost with last update put back to the file.

//

// Revision 1.11  2002/02/14 20:19:41  billditt

// Modified for Address Checking,

// addition of eth_addrcheck.v

//

// Revision 1.10  2002/02/12 17:01:19  mohor

// HASH0 and HASH1 registers added. 

// Revision 1.9  2002/02/08 16:21:54  mohor

// Rx status is written back to the BD.

//

// Revision 1.8  2002/02/05 16:44:38  mohor

// Both rx and tx part are finished. Tested with wb_clk_i between 10 and 200

// MHz. Statuses, overrun, control frame transmission and reception still  need

// to be fixed.

//

// Revision 1.7  2002/01/23 10:28:16  mohor

// Link in the header changed.

//

// Revision 1.6  2001/12/05 15:00:16  mohor

// RX_BD_NUM changed to TX_BD_NUM (holds number of TX descriptors

// instead of the number of RX descriptors).

//

// Revision 1.5  2001/12/05 10:21:37  mohor

// ETH_RX_BD_ADR register deleted. ETH_RX_BD_NUM is used instead.

//

// Revision 1.4  2001/11/13 14:23:56  mohor

// Generic memory model is used. Defines are changed for the same reason.

//

// Revision 1.3  2001/10/18 12:07:11  mohor

// Status signals changed, Adress decoding changed, interrupt controller

// added.

//

// Revision 1.2  2001/09/24 15:02:56  mohor

// Defines changed (All precede with ETH_). Small changes because some

// tools generate warnings when two operands are together. Synchronization

// between two clocks domains in eth_wishbonedma.v is changed (due to ASIC

// demands).

//

// Revision 1.1  2001/08/06 14:44:29  mohor

// A define FPGA added to select between Artisan RAM (for ASIC) and Block Ram (For Virtex).

// Include files fixed to contain no path.

// File names and module names changed ta have a eth_ prologue in the name.

// File eth_timescale.v is used to define timescale

// All pin names on the top module are changed to contain _I, _O or _OE at the end.

// Bidirectional signal MDIO is changed to three signals (Mdc_O, Mdi_I, Mdo_O

// and Mdo_OE. The bidirectional signal must be created on the top level. This

// is done due to the ASIC tools.

//

// Revision 1.1  2001/07/30 21:23:42  mohor

// Directory structure changed. Files checked and joind together.

//

//

//

//

//

//`define ETH_BIST                    // Bist for usage with Virtual Silicon RAMS

// Ethernet implemented in Xilinx Chips

// `define ETH_FIFO_XILINX             // Use Xilinx distributed ram for tx and rx fifo

// `define ETH_XILINX_RAMB4            // Selection of the used memory for Buffer descriptors

                                      // Core is going to be implemented in Virtex FPGA and contains Virtex 

                                      // specific elements. 

// Ethernet implemented in ASIC with Virtual Silicon RAMs

// `define ETH_VIRTUAL_SILICON_RAM     // Virtual Silicon RAMS used storing buffer decriptors (ASIC implementation)

`define ETH_MODER_ADR         8'h0    // 0x0 

`define ETH_INT_SOURCE_ADR    8'h1    // 0x4 

`define ETH_INT_MASK_ADR      8'h2    // 0x8 

`define ETH_IPGT_ADR          8'h3    // 0xC 

`define ETH_IPGR1_ADR         8'h4    // 0x10

`define ETH_IPGR2_ADR         8'h5    // 0x14

`define ETH_PACKETLEN_ADR     8'h6    // 0x18

`define ETH_COLLCONF_ADR      8'h7    // 0x1C

`define ETH_TX_BD_NUM_ADR     8'h8    // 0x20

`define ETH_CTRLMODER_ADR     8'h9    // 0x24

`define ETH_MIIMODER_ADR      8'hA    // 0x28

`define ETH_MIICOMMAND_ADR    8'hB    // 0x2C

`define ETH_MIIADDRESS_ADR    8'hC    // 0x30

`define ETH_MIITX_DATA_ADR    8'hD    // 0x34

`define ETH_MIIRX_DATA_ADR    8'hE    // 0x38

`define ETH_MIISTATUS_ADR     8'hF    // 0x3C

`define ETH_MAC_ADDR0_ADR     8'h10   // 0x40

`define ETH_MAC_ADDR1_ADR     8'h11   // 0x44

`define ETH_HASH0_ADR         8'h12   // 0x48

`define ETH_HASH1_ADR         8'h13   // 0x4C

`define ETH_TX_CTRL_ADR       8'h14   // 0x50

`define ETH_RX_CTRL_ADR       8'h15   // 0x54

`define ETH_MODER_DEF         17'h0A000

`define ETH_INT_MASK_DEF      7'h0

`define ETH_IPGT_DEF          7'h12

`define ETH_IPGR1_DEF         7'h0C

`define ETH_IPGR2_DEF         7'h12

`define ETH_PACKETLEN_DEF     32'h00400600

`define ETH_COLLCONF0_DEF     6'h3f

`define ETH_COLLCONF1_DEF     4'hF

`define ETH_TX_BD_NUM_DEF     8'h40

`define ETH_CTRLMODER_DEF     3'h0

`define ETH_MIIMODER_DEF      10'h064

`define ETH_MIIADDRESS0_DEF   5'h00

`define ETH_MIIADDRESS1_DEF   5'h00

`define ETH_MIITX_DATA_DEF    16'h0000

`define ETH_MIIRX_DATA_DEF    16'h0000

`define ETH_MIISTATUS_DEF     32'h00000000

`define ETH_MAC_ADDR0_DEF     32'h00000000

`define ETH_MAC_ADDR1_DEF     16'h0000

`define ETH_HASH0_DEF         32'h00000000

`define ETH_HASH1_DEF         32'h00000000

`define ETH_RX_CTRL_DEF       16'h0

`define ETH_MODER_WIDTH       17

`define ETH_INT_SOURCE_WIDTH  7

`define ETH_INT_MASK_WIDTH    7

`define ETH_IPGT_WIDTH        7

`define ETH_IPGR1_WIDTH       7

`define ETH_IPGR2_WIDTH       7

`define ETH_PACKETLEN_WIDTH   32

`define ETH_TX_BD_NUM_WIDTH   8

`define ETH_CTRLMODER_WIDTH   3

`define ETH_MIIMODER_WIDTH    9

`define ETH_MIITX_DATA_WIDTH  16

`define ETH_MIIRX_DATA_WIDTH  16

`define ETH_MIISTATUS_WIDTH   3

`define ETH_MAC_ADDR0_WIDTH   32

`define ETH_MAC_ADDR1_WIDTH   16

`define ETH_HASH0_WIDTH       32

`define ETH_HASH1_WIDTH       32

`define ETH_TX_CTRL_WIDTH     17

`define ETH_RX_CTRL_WIDTH     16

// Outputs are registered (uncomment when needed)

`define ETH_REGISTERED_OUTPUTS

// Settings for TX FIFO

`define ETH_TX_FIFO_CNT_WIDTH  5

`define ETH_TX_FIFO_DEPTH      16

`define ETH_TX_FIFO_DATA_WIDTH 32

// Settings for RX FIFO

`define ETH_RX_FIFO_CNT_WIDTH  5

`define ETH_RX_FIFO_DEPTH      16

`define ETH_RX_FIFO_DATA_WIDTH 32

// Burst length

`define ETH_BURST_LENGTH       4    // Change also ETH_BURST_CNT_WIDTH

`define ETH_BURST_CNT_WIDTH    3    // The counter must be width enough to count to ETH_BURST_LENGTH

// WISHBONE interface is Revision B3 compliant (uncomment when needed)

//`define ETH_WISHBONE_B3

// Following defines are needed when eth_cop.v is used. Otherwise they may be deleted.

`define ETH_BASE              32'hd0000000

`define ETH_WIDTH             32'h800

`define MEMORY_BASE           32'h2000

`define MEMORY_WIDTH          32'h10000

`define M1_ADDRESSED_S1 ( (m1_wb_adr_i >= `ETH_BASE)    & (m1_wb_adr_i < (`ETH_BASE    + `ETH_WIDTH   )) )

`define M1_ADDRESSED_S2 ( (m1_wb_adr_i >= `MEMORY_BASE) & (m1_wb_adr_i < (`MEMORY_BASE + `MEMORY_WIDTH)) )

`define M2_ADDRESSED_S1 ( (m2_wb_adr_i >= `ETH_BASE)    & (m2_wb_adr_i < (`ETH_BASE    + `ETH_WIDTH   )) )

`define M2_ADDRESSED_S2 ( (m2_wb_adr_i >= `MEMORY_BASE) & (m2_wb_adr_i < (`MEMORY_BASE + `MEMORY_WIDTH)) )

// Previous defines are only needed for eth_cop.v