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[/] [wb_dma/] [trunk/] [rtl/] [verilog/] [wb_dma_ch_arb.v] - Rev 17
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///////////////////////////////////////////////////////////////////// //// //// //// WISHBONE DMA Channel Arbiter //// //// //// //// //// //// Author: Rudolf Usselmann //// //// rudi@asics.ws //// //// //// //// //// //// Downloaded from: http://www.opencores.org/cores/wb_dma/ //// //// //// ///////////////////////////////////////////////////////////////////// //// //// //// Copyright (C) 2000-2002 Rudolf Usselmann //// //// www.asics.ws //// //// rudi@asics.ws //// //// //// //// 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 SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY //// //// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED //// //// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS //// //// FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL THE AUTHOR //// //// OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, //// //// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES //// //// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE //// //// GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR //// //// BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF //// //// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT //// //// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT //// //// OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE //// //// POSSIBILITY OF SUCH DAMAGE. //// //// //// ///////////////////////////////////////////////////////////////////// // CVS Log // // $Id: wb_dma_ch_arb.v,v 1.2 2002-02-01 01:54:44 rudi Exp $ // // $Date: 2002-02-01 01:54:44 $ // $Revision: 1.2 $ // $Author: rudi $ // $Locker: $ // $State: Exp $ // // Change History: // $Log: not supported by cvs2svn $ // Revision 1.1 2001/07/29 08:57:02 rudi // // // 1) Changed Directory Structure // 2) Added restart signal (REST) // // Revision 1.4 2001/06/14 08:51:25 rudi // // // Changed Module name to match file name. // // Revision 1.3 2001/06/13 02:26:46 rudi // // // Small changes after running lint. // // Revision 1.2 2001/06/05 10:22:34 rudi // // // - Added Support of up to 31 channels // - Added support for 2,4 and 8 priority levels // - Now can have up to 31 channels // - Added many configuration items // - Changed reset to async // // Revision 1.1.1.1 2001/03/19 13:10:47 rudi // Initial Release // // // `include "wb_dma_defines.v" // Arbiter // // Implements a simple round robin arbiter for DMA channels of // same priority module wb_dma_ch_arb(clk, rst, req, gnt, advance); input clk; input rst; input [30:0] req; // Req input output [4:0] gnt; // Grant output input advance; // Next Target /////////////////////////////////////////////////////////////////////// // // Definitions // parameter [4:0] grant0 = 5'h0, grant1 = 5'h1, grant2 = 5'h2, grant3 = 5'h3, grant4 = 5'h4, grant5 = 5'h5, grant6 = 5'h6, grant7 = 5'h7, grant8 = 5'h8, grant9 = 5'h9, grant10 = 5'ha, grant11 = 5'hb, grant12 = 5'hc, grant13 = 5'hd, grant14 = 5'he, grant15 = 5'hf, grant16 = 5'h10, grant17 = 5'h11, grant18 = 5'h12, grant19 = 5'h13, grant20 = 5'h14, grant21 = 5'h15, grant22 = 5'h16, grant23 = 5'h17, grant24 = 5'h18, grant25 = 5'h19, grant26 = 5'h1a, grant27 = 5'h1b, grant28 = 5'h1c, grant29 = 5'h1d, grant30 = 5'h1e; /////////////////////////////////////////////////////////////////////// // // Local Registers and Wires // reg [4:0] state, next_state; /////////////////////////////////////////////////////////////////////// // // Misc Logic // assign gnt = state; always@(posedge clk or negedge rst) if(!rst) state <= #1 grant0; else state <= #1 next_state; /////////////////////////////////////////////////////////////////////// // // Next State Logic // - implements round robin arbitration algorithm // - switches grant if current req is dropped or next is asserted // - parks at last grant // always@(state or req or advance) begin next_state = state; // Default Keep State case(state) // synopsys parallel_case full_case grant0: // if this req is dropped or next is asserted, check for other req's if(!req[0] | advance) begin if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; end grant1: // if this req is dropped or next is asserted, check for other req's if(!req[1] | advance) begin if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; end grant2: // if this req is dropped or next is asserted, check for other req's if(!req[2] | advance) begin if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; end grant3: // if this req is dropped or next is asserted, check for other req's if(!req[3] | advance) begin if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; end grant4: // if this req is dropped or next is asserted, check for other req's if(!req[4] | advance) begin if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; end grant5: // if this req is dropped or next is asserted, check for other req's if(!req[5] | advance) begin if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; end grant6: // if this req is dropped or next is asserted, check for other req's if(!req[6] | advance) begin if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; end grant7: // if this req is dropped or next is asserted, check for other req's if(!req[7] | advance) begin if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; end grant8: // if this req is dropped or next is asserted, check for other req's if(!req[8] | advance) begin if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; end grant9: // if this req is dropped or next is asserted, check for other req's if(!req[9] | advance) begin if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; end grant10: // if this req is dropped or next is asserted, check for other req's if(!req[10] | advance) begin if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; end grant11: // if this req is dropped or next is asserted, check for other req's if(!req[11] | advance) begin if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; end grant12: // if this req is dropped or next is asserted, check for other req's if(!req[12] | advance) begin if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; end grant13: // if this req is dropped or next is asserted, check for other req's if(!req[13] | advance) begin if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; end grant14: // if this req is dropped or next is asserted, check for other req's if(!req[14] | advance) begin if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; end grant15: // if this req is dropped or next is asserted, check for other req's if(!req[15] | advance) begin if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; end grant16: // if this req is dropped or next is asserted, check for other req's if(!req[16] | advance) begin if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; end grant17: // if this req is dropped or next is asserted, check for other req's if(!req[17] | advance) begin if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; end grant18: // if this req is dropped or next is asserted, check for other req's if(!req[18] | advance) begin if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; end grant19: // if this req is dropped or next is asserted, check for other req's if(!req[19] | advance) begin if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; end grant20: // if this req is dropped or next is asserted, check for other req's if(!req[20] | advance) begin if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; end grant21: // if this req is dropped or next is asserted, check for other req's if(!req[21] | advance) begin if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; end grant22: // if this req is dropped or next is asserted, check for other req's if(!req[22] | advance) begin if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; end grant23: // if this req is dropped or next is asserted, check for other req's if(!req[23] | advance) begin if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; end grant24: // if this req is dropped or next is asserted, check for other req's if(!req[24] | advance) begin if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; end grant25: // if this req is dropped or next is asserted, check for other req's if(!req[25] | advance) begin if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; end grant26: // if this req is dropped or next is asserted, check for other req's if(!req[26] | advance) begin if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; end grant27: // if this req is dropped or next is asserted, check for other req's if(!req[27] | advance) begin if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; end grant28: // if this req is dropped or next is asserted, check for other req's if(!req[28] | advance) begin if(req[29]) next_state = grant29; else if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; end grant29: // if this req is dropped or next is asserted, check for other req's if(!req[29] | advance) begin if(req[30]) next_state = grant30; else if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; end grant30: // if this req is dropped or next is asserted, check for other req's if(!req[30] | advance) begin if(req[0]) next_state = grant0; else if(req[1]) next_state = grant1; else if(req[2]) next_state = grant2; else if(req[3]) next_state = grant3; else if(req[4]) next_state = grant4; else if(req[5]) next_state = grant5; else if(req[6]) next_state = grant6; else if(req[7]) next_state = grant7; else if(req[8]) next_state = grant8; else if(req[9]) next_state = grant9; else if(req[10]) next_state = grant10; else if(req[11]) next_state = grant11; else if(req[12]) next_state = grant12; else if(req[13]) next_state = grant13; else if(req[14]) next_state = grant14; else if(req[15]) next_state = grant15; else if(req[16]) next_state = grant16; else if(req[17]) next_state = grant17; else if(req[18]) next_state = grant18; else if(req[19]) next_state = grant19; else if(req[20]) next_state = grant20; else if(req[21]) next_state = grant21; else if(req[22]) next_state = grant22; else if(req[23]) next_state = grant23; else if(req[24]) next_state = grant24; else if(req[25]) next_state = grant25; else if(req[26]) next_state = grant26; else if(req[27]) next_state = grant27; else if(req[28]) next_state = grant28; else if(req[29]) next_state = grant29; end endcase end endmodule