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/**********************************************************************************
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Theia, Ray Cast Programable graphic Processing Unit.
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Copyright (C) 2010 Diego Valverde (diego.valverde.g@gmail.com)
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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***********************************************************************************/
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/**********************************************************************************
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Description:
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This is the main Finite State Machine.
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**********************************************************************************/
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`timescale 1ns / 1ps
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`include "aDefinitions.v"
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`define CU_AFTER_RESET_STATE 0
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`define CU_WAIT_FOR_INITIAL_CONFIGURATION 1
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`define CU_TRIGGER_CONFIGURATION_DATA_READ 2
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`define CU_WAIT_FOR_CONFIG_DATA_READ 3
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`define CU_ACK_CONFIG_DATA_READ 4
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`define CU_PRECALCULATE_CONSTANTS 5
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`define CU_WAIT_FOR_CONSTANT 6
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`define CU_ACK_PRECALCULATE_CONSTANTS 7
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`define CU_WAIT_FOR_TASK 8
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`define CU_READ_TASK_DATA 9
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`define CU_WAIT_TASK_DATA_READ 10
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`define CU_ACK_TASK_DATA_READ 11
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`define CU_TRIGGER_RGU 12
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`define CU_WAIT_FOR_RGU 13
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`define CU_ACK_RGU 14
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`define CU_TRIGGER_GEO 15
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`define CU_WAIT_FOR_GEO_SYNC 16
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//`define CU_CHECK_AABBIU_REQUEST 17
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`define CU_TRIGGER_TCC 17
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//`define CU_CHECK_BIU_REQUEST 18
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//`define CU_TRIGGER_TFF 18
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//`define CU_CHECK_GEO_DONE 19
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//`define CU_WAIT_FOR_TFF 19
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`define CU_TRIGGER_AABBIU 20
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`define CU_WAIT_FOR_AABBIU 21
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`define CU_TRIGGER_MAIN 22
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`define CU_WAIT_FOR_MAIN 23
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`define CU_ACK_MAIN 24
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`define CU_TRIGGER_PSU 25
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`define CU_WAIT_FOR_PSU 26
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`define CU_ACK_PSU 27
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//`define CU_TRIGGER_PCU 28
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`define CU_WAIT_FOR_PCU 29
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`define CU_ACK_PCU 30
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`define CU_CHECK_HIT 31
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`define CU_CLEAR_REGISTERS 32
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`define CU_WAIT_CLEAR_REGISTERS 33
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`define CU_ACK_CLEAR_REGISTERS 34
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`define CU_TRIGGER_PSU_WITH_TEXTURE 35
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`define WAIT_FOR_TCC 36
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`define CU_TRIGGER_NPU 37
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`define CU_WAIT_NPU 38
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`define CU_ACK_NPU 39
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`define CU_PERFORM_INTIAL_CONFIGURATION 40
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`define CU_SET_PICTH 41
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`define CU_TRIGGER_USERCONSTANTS 42
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`define CU_WAIT_USERCONSTANTS 43
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`define CU_ACK_USERCONSTANTS 44
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`define CU_TRIGGER_USERPIXELSHADER 45
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`define CU_WAIT_FOR_USERPIXELSHADER 46
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`define CU_ACK_USERPIXELSHADER 47
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`define CU_DONE 48
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`define CU_WAIT_FOR_RENDER_ENABLE 49
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`define CU_ACK_TCC 50
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`define CU_WAIT_FOR_HOST_DATA_AVAILABLE 51
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`define CU_WAIT_FOR_HOST_DATA_ACK 52
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//--------------------------------------------------------------
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module ControlUnit
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(
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input wire Clock,
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input wire Reset,
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input wire[15:0] iControlRegister,
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output reg oGFUEnable,
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input wire iTriggerAABBIURequest,
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input wire iTriggerBIURequest,
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input wire iTriggertTCCRequest,
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output reg oUCodeEnable,
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output reg[`ROM_ADDRESS_WIDTH-1:0] oCodeInstructioPointer,
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input wire iUCodeDone,
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input wire iUCodeReturnValue,
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input wire iGFUDone,
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input wire iGEOSync,
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output reg oTriggerTFF,
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input wire iTFFDone,
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input wire MST_I,
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//output reg[2:0] //oRamBusOwner,
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input wire iIODone,
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output reg oSetCurrentPitch,
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output reg oFlipMemEnabled,
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output reg oFlipMem,
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output reg oIOWritePixel,
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input wire iRenderEnable,
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input wire iSceneTraverseComplete,
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input wire iHostDataAvailable,
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input wire iHostAckDataRead,
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`ifdef DEBUG
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input wire[`MAX_CORES-1:0] iDebug_CoreID,
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`endif
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output reg oResultCommited,
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output reg oDone
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);
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//Internal State Machine varibles
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reg [5:0] CurrentState;
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reg [5:0] NextState;
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integer ucode_file;
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reg rResetHitFlop,rHitFlopEnable;
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wire wHit;
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`ifdef DUMP_CODE
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integer log;
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initial
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begin
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//$display("Opening ucode dump file....\n");
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ucode_file = $fopen("CU.log","w");
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end
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`endif
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//--------------------------------------------------------------
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FFToggleOnce_1Bit FFTO1
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(
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.Clock( Clock ),
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.Reset( rResetHitFlop ),
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.Enable( rHitFlopEnable && iUCodeDone ),
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.S( iUCodeReturnValue ),
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.Q( wHit )
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);
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//--------------------------------------------------------------
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`ifdef DEBUG_CU
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always @ ( wHit )
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begin
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$display( "*** Triangle HIT ***\n");
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end
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`endif
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//Next states logic and Reset sequence
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always @(posedge Clock or posedge Reset)
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begin
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if (Reset)
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CurrentState <= `CU_AFTER_RESET_STATE;
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else
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CurrentState <= NextState;
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end
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//--------------------------------------------------------------
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always @ ( * )
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begin
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case (CurrentState)
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//-----------------------------------------
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`CU_AFTER_RESET_STATE:
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begin
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`ifdef DEBUG_CU
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$display("%d CU_AFTER_RESET_STATE\n",$time);
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`endif
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//oRamBusOwner = 0;
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oCodeInstructioPointer = `ENTRYPOINT_INDEX_INITIAL;
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oGFUEnable = 0;
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oUCodeEnable = 0;
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oIOWritePixel = 0;
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rResetHitFlop = 1;
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rHitFlopEnable = 0;
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oTriggerTFF = 0;
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oSetCurrentPitch = 1;
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oFlipMemEnabled = 0;
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oFlipMem = 0;
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oDone = 0;
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oResultCommited = 0;
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//oIncCurrentPitch = 0;
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NextState = `CU_WAIT_FOR_INITIAL_CONFIGURATION;
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end
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//-----------------------------------------
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`CU_WAIT_FOR_INITIAL_CONFIGURATION:
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begin
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//$display("CORE: %d CU_WAIT_FOR_INITIAL_CONFIGURATION", iDebug_CoreID);
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// `ifdef DEBUG_CU
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// $display("%d Control: CU_WAIT_FOR_INITIAL_CONFIGURATION\n",$time);
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// `endif
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//oRamBusOwner = 0;
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oCodeInstructioPointer = 0;
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oGFUEnable = 0;
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oUCodeEnable = 0;
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oIOWritePixel = 0;
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rResetHitFlop = 1;
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rHitFlopEnable = 0;
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oTriggerTFF = 0;
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oSetCurrentPitch = 0;
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oFlipMemEnabled = 0;
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oFlipMem = 0;
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oDone = 0;
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oResultCommited = 0;
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//oIncCurrentPitch = 0;
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if ( MST_I )
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NextState = `CU_PERFORM_INTIAL_CONFIGURATION;//`CU_WAIT_FOR_CONFIG_DATA_READ;
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else
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NextState = `CU_WAIT_FOR_INITIAL_CONFIGURATION;
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end
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//-----------------------------------------
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`CU_PERFORM_INTIAL_CONFIGURATION:
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begin
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//oRamBusOwner = 0;
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oCodeInstructioPointer = 0;
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oGFUEnable = 0;
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oUCodeEnable = 0;
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oIOWritePixel = 0;
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rResetHitFlop = 1;
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rHitFlopEnable = 0;
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oTriggerTFF = 0;
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oSetCurrentPitch = 0;
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oFlipMemEnabled = 0;
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oFlipMem = 0;
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oDone = 0;
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oResultCommited = 0;
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//oIncCurrentPitch = 0;
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if ( MST_I == 0 && iRenderEnable == 1'b1)
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NextState = `CU_CLEAR_REGISTERS;//`CU_WAIT_FOR_CONFIG_DATA_READ;
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else
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NextState = `CU_PERFORM_INTIAL_CONFIGURATION;
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end
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//-----------------------------------------
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`CU_CLEAR_REGISTERS:
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begin
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`ifdef DEBUG_CU
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$display("%d CU_CLEAR_REGISTERS\n",$time);
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`endif
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//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
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oCodeInstructioPointer = `ENTRYPOINT_INDEX_INITIAL;
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oGFUEnable = 0;
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oUCodeEnable = 1; //*
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oIOWritePixel = 0;
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rResetHitFlop = 0;
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rHitFlopEnable = 0;
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oTriggerTFF = 0;
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oSetCurrentPitch = 0;
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oFlipMemEnabled = 1;
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oFlipMem = 0;
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oDone = 0;
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oResultCommited = 0;
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////$display("\n\n %d XOXOXOXOX FLIP XOXOXOXOXOX\n\n",$time);
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//oIncCurrentPitch = 0;
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NextState = `CU_WAIT_CLEAR_REGISTERS;
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end
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//-----------------------------------------
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`CU_WAIT_CLEAR_REGISTERS:
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begin
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// `ifdef DEBUG_CU
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// $display("%d CU_WAIT_CLEAR_REGISTERS\n",$time);
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// `endif
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//$display("CORE: %d CU_WAIT_CLEAR_REGISTERS", iDebug_CoreID);
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//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
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oCodeInstructioPointer = `ENTRYPOINT_INDEX_INITIAL;
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oGFUEnable = 0;
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oUCodeEnable = 0;
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oIOWritePixel = 0;
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rResetHitFlop = 0;
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rHitFlopEnable = 0;
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oTriggerTFF = 0;
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oSetCurrentPitch = 0;
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oFlipMemEnabled = 1;
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oFlipMem = 0;
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oDone = 0;
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oResultCommited = 0;
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//oIncCurrentPitch = 0;
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if ( iUCodeDone )
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NextState = `CU_ACK_CLEAR_REGISTERS;
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else
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NextState = `CU_WAIT_CLEAR_REGISTERS;
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end
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//-----------------------------------------
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`CU_ACK_CLEAR_REGISTERS:
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begin
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`ifdef DEBUG_CU
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$display("%d CU_ACK_CLEAR_REGISTERS\n", $time);
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`endif
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//$display("CORE: %d CU_ACK_CLEAR_REGISTERS", iDebug_CoreID);
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//oRamBusOwner = 0;
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oCodeInstructioPointer = 0;
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oGFUEnable = 0;
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oUCodeEnable = 0; //*
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oIOWritePixel = 0;
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rResetHitFlop = 0;
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rHitFlopEnable = 0;
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oTriggerTFF = 0;
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oSetCurrentPitch = 0;
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oFlipMemEnabled = 0;
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oFlipMem = 0;
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oDone = 0;
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oResultCommited = 0;
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//oIncCurrentPitch = 0;
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NextState = `CU_WAIT_FOR_CONFIG_DATA_READ;
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end
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//-----------------------------------------
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`CU_WAIT_FOR_CONFIG_DATA_READ:
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begin
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// `ifdef DEBUG_CU
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// $display("%d Control: CU_WAIT_FOR_CONFIG_DATA_READ\n",$time);
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// `endif
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//$display("CORE: %d CU_WAIT_FOR_CONFIG_DATA_READ", iDebug_CoreID);
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//oRamBusOwner = 0;//`REG_BUS_OWNED_BY_BCU;
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oCodeInstructioPointer = 0;
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oGFUEnable = 0;
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oUCodeEnable = 0;
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oIOWritePixel = 0;
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rResetHitFlop = 0;
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rHitFlopEnable = 0;
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oTriggerTFF = 0;
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oSetCurrentPitch = 0;
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oFlipMemEnabled = 0;
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oFlipMem = 0;
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oDone = 0;
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oResultCommited = 0;
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//oIncCurrentPitch = 0;
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if ( MST_I == 0 )
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NextState = `CU_PRECALCULATE_CONSTANTS;
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else
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NextState = `CU_WAIT_FOR_CONFIG_DATA_READ;
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end
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//-----------------------------------------
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`CU_PRECALCULATE_CONSTANTS:
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begin
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//$display("CORE: %d CU_PRECALCULATE_CONSTANTS", iDebug_CoreID);
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`ifdef DEBUG_CU
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$display("%d Control: CU_PRECALCULATE_CONSTANTS\n", $time);
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`endif
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//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
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oCodeInstructioPointer = `ENTRYPOINT_INDEX_CPPU;
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oGFUEnable = 0;
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oUCodeEnable = 1; //*
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oIOWritePixel = 0;
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rResetHitFlop = 0;
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rHitFlopEnable = 0;
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oTriggerTFF = 0;
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oSetCurrentPitch = 0;
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oFlipMemEnabled = 0;
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oFlipMem = 0;
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oDone = 0;
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oResultCommited = 0;
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//oIncCurrentPitch = 0;
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NextState = `CU_WAIT_FOR_CONSTANT;
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end
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//-----------------------------------------
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`CU_WAIT_FOR_CONSTANT:
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begin
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// `ifdef DEBUG_CU
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// $display("%d Control: CU_WAIT_FOR_CONSTANT\n", $time);
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// `endif
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//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
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oCodeInstructioPointer = `ENTRYPOINT_INDEX_CPPU;
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oGFUEnable = 0;
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oUCodeEnable = 0; //*
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oIOWritePixel = 0;
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rResetHitFlop = 0;
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rHitFlopEnable = 0;
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oTriggerTFF = 0;
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oSetCurrentPitch = 0;
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oFlipMemEnabled = 0;
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oFlipMem = 0;
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oDone = 0;
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oResultCommited = 0;
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//oIncCurrentPitch = 0;
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if ( iUCodeDone )
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NextState = `CU_ACK_PRECALCULATE_CONSTANTS;
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else
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NextState = `CU_WAIT_FOR_CONSTANT;
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end
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//-----------------------------------------
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`CU_ACK_PRECALCULATE_CONSTANTS:
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begin
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//$display("CORE: %d CU_ACK_PRECALCULATE_CONSTANTS", iDebug_CoreID);
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`ifdef DEBUG_CU
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$display("%d Control: CU_ACK_PRECALCULATE_CONSTANTS\n", $time);
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`endif
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//oRamBusOwner = 0;//`REG_BUS_OWNED_BY_BCU;
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oCodeInstructioPointer = 0;
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oGFUEnable = 0;
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oUCodeEnable = 0; //*
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oIOWritePixel = 0;
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rResetHitFlop = 0;
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rHitFlopEnable = 0;
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oTriggerTFF = 0;
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oSetCurrentPitch = 0;
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oFlipMemEnabled = 0;
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oFlipMem = 0;
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oDone = 0;
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oResultCommited = 0;
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//oIncCurrentPitch = 0;
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NextState = `CU_TRIGGER_USERCONSTANTS;//CU_WAIT_FOR_TASK;
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end
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//-----------------------------------------
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`CU_TRIGGER_USERCONSTANTS:
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begin
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`ifdef DEBUG_CU
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$display("%d Control: CU_TRIGGER_USERCONSTANTS\n",$time);
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`endif
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|
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//$display("CORE: %d CU_TRIGGER_USERCONSTANTS", iDebug_CoreID);
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//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
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oCodeInstructioPointer = `ENTRYPOINT_INDEX_USERCONSTANTS;
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oGFUEnable = 0;
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oUCodeEnable = 1; //*
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oIOWritePixel = 0;
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rResetHitFlop = 0;
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rHitFlopEnable = 0;
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oTriggerTFF = 0;
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oSetCurrentPitch = 0;
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oFlipMemEnabled = 0;
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oFlipMem = 0;
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oDone = 0;
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oResultCommited = 0;
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//oIncCurrentPitch = 0;
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NextState = `CU_WAIT_USERCONSTANTS;
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end
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//-----------------------------------------
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|
`CU_WAIT_USERCONSTANTS:
|
|
begin
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|
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// `ifdef DEBUG_CU
|
|
// $display("%d Control: CU_WAIT_FOR_RGU\n",$time);
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// `endif
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//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
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oCodeInstructioPointer = `ENTRYPOINT_INDEX_USERCONSTANTS;
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oGFUEnable = 0;
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oUCodeEnable = 0;
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oIOWritePixel = 0;
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rResetHitFlop = 0;
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rHitFlopEnable = 0;
|
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oTriggerTFF = 0;
|
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oSetCurrentPitch = 0;
|
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oFlipMemEnabled = 0;
|
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oFlipMem = 0;
|
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oDone = 0;
|
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oResultCommited = 0;
|
|
//oIncCurrentPitch = 0;
|
|
|
|
if ( iUCodeDone )
|
|
NextState = `CU_ACK_USERCONSTANTS;
|
|
else
|
|
NextState = `CU_WAIT_USERCONSTANTS;
|
|
end
|
|
//-----------------------------------------
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|
`CU_ACK_USERCONSTANTS:
|
|
begin
|
|
|
|
`ifdef DEBUG_CU
|
|
$display("%d Control: CU_ACK_RGU\n",$time);
|
|
`endif
|
|
|
|
//$display("CORE: %d CU_ACK_USERCONSTANTS", iDebug_CoreID);
|
|
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
|
|
oCodeInstructioPointer = 0;
|
|
oGFUEnable = 0;
|
|
oUCodeEnable = 0; //*
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 0;
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
//oIncCurrentPitch = 0;
|
|
|
|
if ( iUCodeDone == 0)
|
|
NextState = `CU_WAIT_FOR_RENDER_ENABLE;
|
|
else
|
|
NextState = `CU_ACK_USERCONSTANTS;
|
|
|
|
end
|
|
//-----------------------------------------
|
|
`CU_WAIT_FOR_RENDER_ENABLE:
|
|
begin
|
|
`ifdef DEBUG_CU
|
|
$display("CORE: %d CU_WAIT_FOR_RENDER_ENABLE", iDebug_CoreID);
|
|
`endif
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
|
|
oCodeInstructioPointer = 0;
|
|
oGFUEnable = 0;
|
|
oUCodeEnable = 0; //*
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 0;
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
//oIncCurrentPitch = 0;
|
|
|
|
if ( iRenderEnable)
|
|
NextState = `CU_TRIGGER_RGU;
|
|
else
|
|
NextState = `CU_WAIT_FOR_RENDER_ENABLE;
|
|
end
|
|
//-----------------------------------------
|
|
`CU_TRIGGER_RGU:
|
|
begin
|
|
|
|
`ifdef DEBUG_CU
|
|
$display("CORE: %d CU_TRIGGER_RGU", iDebug_CoreID);
|
|
`endif
|
|
|
|
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
|
|
oCodeInstructioPointer = `ENTRYPOINT_INDEX_RGU;
|
|
oGFUEnable = 0;
|
|
oUCodeEnable = 1; //*
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 0;
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
//oIncCurrentPitch = 0;
|
|
|
|
NextState = `CU_WAIT_FOR_RGU;
|
|
end
|
|
//-----------------------------------------
|
|
`CU_WAIT_FOR_RGU:
|
|
begin
|
|
|
|
// `ifdef DEBUG_CU
|
|
// $display("%d Control: CU_WAIT_FOR_RGU\n",$time);
|
|
// `endif
|
|
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
|
|
oCodeInstructioPointer = 0;
|
|
oGFUEnable = 0;
|
|
oUCodeEnable = 0;
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 0;
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
//oIncCurrentPitch = 0;
|
|
|
|
if ( iUCodeDone )
|
|
NextState = `CU_ACK_RGU;
|
|
else
|
|
NextState = `CU_WAIT_FOR_RGU;
|
|
end
|
|
//-----------------------------------------
|
|
`CU_ACK_RGU:
|
|
begin
|
|
|
|
`ifdef DEBUG_CU
|
|
$display("CORE: %d CU_ACK_RGU", iDebug_CoreID);
|
|
`endif
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
|
|
oCodeInstructioPointer = 0;
|
|
oGFUEnable = 0;
|
|
oUCodeEnable = 0; //*
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 1;
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
//oIncCurrentPitch = 0;
|
|
|
|
if ( iUCodeDone == 0 & iRenderEnable == 1)
|
|
NextState = `CU_WAIT_FOR_HOST_DATA_AVAILABLE;//`CU_TRIGGER_GEO;///////////// GET RID OF GEO!!!
|
|
else
|
|
NextState = `CU_ACK_RGU;
|
|
|
|
end
|
|
//-----------------------------------------
|
|
`CU_TRIGGER_TCC:
|
|
begin
|
|
////$display("CU_TRIGGER_TCC");
|
|
`ifdef DEBUG_CU
|
|
$display("%d CORE %d Control: CU_TRIGGER_TCC\n",$time,iDebug_CoreID);
|
|
`endif
|
|
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
|
|
oCodeInstructioPointer = `ENTRYPOINT_INDEX_TCC;
|
|
oUCodeEnable = 1; //*
|
|
oGFUEnable = 0;
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 1;
|
|
oFlipMem = 0; //We need u,v from last IO read cycle
|
|
oResultCommited = 0;
|
|
////$display("\n\n %d XOXOXOXOX FLIP XOXOXOXOXOX\n\n",$time);
|
|
//oIncCurrentPitch = 0;
|
|
oDone = 0;
|
|
|
|
NextState = `WAIT_FOR_TCC;
|
|
end
|
|
//-----------------------------------------
|
|
`WAIT_FOR_TCC:
|
|
begin
|
|
|
|
////$display("WAIT_FOR_TCC");
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
|
|
oCodeInstructioPointer = `ENTRYPOINT_INDEX_TCC;
|
|
oUCodeEnable = 0; //*
|
|
oGFUEnable = 0;
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 1;
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
//oIncCurrentPitch = 0;
|
|
|
|
if ( iUCodeDone )
|
|
NextState = `CU_ACK_TCC;
|
|
else
|
|
NextState = `WAIT_FOR_TCC;
|
|
|
|
end
|
|
//-----------------------------------------
|
|
`CU_ACK_TCC:
|
|
begin
|
|
|
|
////$display("WAIT_FOR_TCC");
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
|
|
oCodeInstructioPointer = `ENTRYPOINT_INDEX_TCC;
|
|
oUCodeEnable = 0; //*
|
|
oGFUEnable = 0;
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 0;
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
//oIncCurrentPitch = 0;
|
|
|
|
if ( iUCodeDone == 0 && iSceneTraverseComplete == 1'b1) //DDDD
|
|
NextState = `CU_TRIGGER_PSU_WITH_TEXTURE;
|
|
else if (iUCodeDone == 0 && iSceneTraverseComplete == 1'b0)
|
|
NextState = `CU_WAIT_FOR_HOST_DATA_AVAILABLE;
|
|
else
|
|
NextState = `CU_ACK_TCC;
|
|
|
|
end
|
|
//-----------------------------------------
|
|
/*
|
|
Was there any hit at all?
|
|
At this point, all the triangles in the list
|
|
have been traversed looking for a hit with our ray.
|
|
There are 3 possibilities:
|
|
1) The was not a single hit, then just paint a black
|
|
pixel on the screen and send it via PCU.
|
|
2)There was a hit and Texturing is not enabled, then trigger the PSU with
|
|
no texturing
|
|
2) There was a hit and Texturing is enabled, then fetch the texture
|
|
values corresponding to the triangle that we hitted.
|
|
*/
|
|
`CU_CHECK_HIT:
|
|
begin
|
|
|
|
`ifdef DEBUG_CU
|
|
$display("%d CORE %d Control: CU_CHECK_HIT\n",$time,iDebug_CoreID);
|
|
`endif
|
|
|
|
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_GFU;
|
|
oCodeInstructioPointer = 0;
|
|
oUCodeEnable = 0;
|
|
oGFUEnable = 0; ///CHANGED Aug 15
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 0;
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
|
|
|
|
|
|
if (wHit)
|
|
begin
|
|
//$display("HIT");
|
|
NextState = `CU_TRIGGER_PSU_WITH_TEXTURE;
|
|
end
|
|
else
|
|
NextState = `CU_TRIGGER_USERPIXELSHADER;//666
|
|
|
|
end
|
|
|
|
//-----------------------------------------
|
|
`CU_TRIGGER_PSU_WITH_TEXTURE:
|
|
begin
|
|
|
|
`ifdef DEBUG_CU
|
|
$display("%d Control: CU_TRIGGER_PSU_WITH_TEXTURE\n",$time);
|
|
`endif
|
|
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
|
|
oCodeInstructioPointer = `ENTRYPOINT_INDEX_PSU2;
|
|
oUCodeEnable = 1;
|
|
oGFUEnable = 0;
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 1;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 0;//////NEW NEW NEW NEW
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
////$display("\n\n %d XOXOXOXOX FLIP XOXOXOXOXOX\n\n",$time);
|
|
//oIncCurrentPitch = 0;
|
|
|
|
NextState = `CU_WAIT_FOR_PSU;
|
|
end
|
|
//-----------------------------------------
|
|
`CU_WAIT_FOR_HOST_DATA_ACK:
|
|
begin
|
|
oCodeInstructioPointer = 0;
|
|
oUCodeEnable = 0;
|
|
oGFUEnable = 0;
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 0;
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
|
|
if ( iHostAckDataRead )
|
|
NextState = `CU_WAIT_FOR_HOST_DATA_AVAILABLE;
|
|
else
|
|
NextState = `CU_WAIT_FOR_HOST_DATA_ACK;
|
|
end
|
|
//-----------------------------------------
|
|
//Wait until data from Host becomes available
|
|
`CU_WAIT_FOR_HOST_DATA_AVAILABLE:
|
|
begin
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
|
|
oCodeInstructioPointer = 0;
|
|
oUCodeEnable = 0;
|
|
oGFUEnable = 0;
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 0;
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
|
|
if ( iHostDataAvailable )
|
|
NextState = `CU_TRIGGER_MAIN;
|
|
else
|
|
NextState = `CU_WAIT_FOR_HOST_DATA_AVAILABLE;
|
|
|
|
|
|
end
|
|
//-----------------------------------------
|
|
`CU_TRIGGER_MAIN:
|
|
begin
|
|
`ifdef DEBUG_CU
|
|
$display("%d CORE: %d Control: CU_TRIGGER_MAIN\n",$time,iDebug_CoreID);
|
|
`endif
|
|
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
|
|
oCodeInstructioPointer = `ENTRYPOINT_INDEX_MAIN;
|
|
oUCodeEnable = 1;
|
|
oGFUEnable = 1;
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 1;
|
|
oFlipMem = 1;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
////$display("\n\n %d XOXOXOXOX FLIP XOXOXOXOXOX\n\n",$time);
|
|
//oIncCurrentPitch = 0;
|
|
// $stop();
|
|
|
|
NextState = `CU_WAIT_FOR_MAIN;
|
|
|
|
end
|
|
//-----------------------------------------
|
|
`CU_WAIT_FOR_MAIN:
|
|
begin
|
|
// `ifdef DEBUG_CU
|
|
// $display("%d Control: CU_WAIT_FOR_MAIN\n",$time);
|
|
// `endif
|
|
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
|
|
oCodeInstructioPointer = `ENTRYPOINT_INDEX_MAIN;
|
|
oUCodeEnable = 0;
|
|
oGFUEnable = 1;
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 1;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 1;
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
//oIncCurrentPitch = 0;
|
|
|
|
//NextState = `CU_WAIT_FOR_MAIN;
|
|
|
|
|
|
if ( iUCodeDone )
|
|
NextState = `CU_ACK_MAIN;
|
|
else
|
|
NextState = `CU_WAIT_FOR_MAIN;
|
|
|
|
end
|
|
//-----------------------------------------
|
|
/*
|
|
ACK UCODE by setting oUCodeEnable = 0
|
|
*/
|
|
`CU_ACK_MAIN:
|
|
begin
|
|
`ifdef DEBUG_CU
|
|
$display("%d CORE: %d Control: CU_ACK_MAIN\n",$time, iDebug_CoreID);
|
|
`endif
|
|
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_GFU;
|
|
oCodeInstructioPointer = 0; //*
|
|
oUCodeEnable = 0; //*
|
|
oGFUEnable = 0; //Changed Aug 15
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 1;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 0;
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
//oIncCurrentPitch = 0;
|
|
|
|
// $stop();
|
|
|
|
if ( iUCodeDone == 1'b0 & iSceneTraverseComplete == 1'b1)
|
|
NextState = `CU_CHECK_HIT;
|
|
else if ( iUCodeDone == 1'b0 & iSceneTraverseComplete == 1'b0) //ERROR!!! What if iSceneTraverseComplete will become 1 a cycle after this??
|
|
NextState = `CU_WAIT_FOR_HOST_DATA_ACK;//`CU_WAIT_FOR_HOST_DATA_AVAILABLE;
|
|
else
|
|
NextState = `CU_ACK_MAIN;
|
|
|
|
|
|
|
|
end
|
|
//-----------------------------------------
|
|
`CU_WAIT_FOR_PSU:
|
|
begin
|
|
|
|
// `ifdef DEBUG_CU
|
|
// $display("%d Control: CU_TRIGGER_PSU\n",$time);
|
|
// `endif
|
|
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
|
|
oCodeInstructioPointer = `ENTRYPOINT_INDEX_PSU;
|
|
oUCodeEnable = 0;
|
|
oGFUEnable = 0;
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 1;
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
//oIncCurrentPitch = 0;
|
|
|
|
|
|
if ( iUCodeDone )
|
|
NextState = `CU_ACK_PSU;
|
|
else
|
|
NextState = `CU_WAIT_FOR_PSU;
|
|
|
|
end
|
|
//-----------------------------------------
|
|
`CU_ACK_PSU:
|
|
begin
|
|
`ifdef DEBUG_CU
|
|
$display("%d CORE: %d Control: CU_ACK_PSU\n",$time, iDebug_CoreID);
|
|
`endif
|
|
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
|
|
oCodeInstructioPointer = 0; //*
|
|
oUCodeEnable = 0; //*
|
|
oGFUEnable = 0;
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 1;
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
//oIncCurrentPitch = 0;
|
|
|
|
if ( iUCodeDone == 0)
|
|
NextState = `CU_TRIGGER_USERPIXELSHADER;
|
|
else
|
|
NextState = `CU_ACK_PSU;
|
|
|
|
|
|
end
|
|
//-----------------------------------------
|
|
|
|
//-----------------------------------------
|
|
`CU_TRIGGER_NPU: //Next Pixel Unit
|
|
begin
|
|
`ifdef DEBUG_CU
|
|
$display("%d CORE: %d Control: CU_TRIGGER_NPU\n",$time, iDebug_CoreID);
|
|
`endif
|
|
//$write("*");
|
|
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
|
|
oCodeInstructioPointer = `ENTRYPOINT_INDEX_NPG; //*
|
|
oUCodeEnable = 1; //*
|
|
oGFUEnable = 0;
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 1;
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
//oIncCurrentPitch = 0;
|
|
|
|
NextState = `CU_WAIT_NPU;
|
|
end
|
|
//-----------------------------------------
|
|
`CU_WAIT_NPU:
|
|
begin
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
|
|
oCodeInstructioPointer = `ENTRYPOINT_INDEX_NPG;
|
|
oUCodeEnable = 0;
|
|
oGFUEnable = 0;
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 1;
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
//oIncCurrentPitch = 0;
|
|
|
|
if ( iUCodeDone )
|
|
NextState = `CU_ACK_NPU;
|
|
else
|
|
NextState = `CU_WAIT_NPU;
|
|
end
|
|
//-----------------------------------------
|
|
/*
|
|
Next Pixel generation: here we either goto
|
|
to RGU for the next pixel, or we have no
|
|
more pixels so we are done we our picture!
|
|
*/
|
|
`CU_ACK_NPU:
|
|
begin
|
|
`ifdef DEBUG_CU
|
|
$display("%d CORE: %d Control: CU_ACK_NPU\n",$time, iDebug_CoreID);
|
|
`endif
|
|
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
|
|
oCodeInstructioPointer = 0; //*
|
|
oUCodeEnable = 0; //*
|
|
oGFUEnable = 0;
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 1;
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
//oIncCurrentPitch = 0;
|
|
|
|
if ( iUCodeDone == 0 && iUCodeReturnValue == 1)
|
|
NextState = `CU_TRIGGER_RGU;
|
|
else if (iUCodeDone == 0 && iUCodeReturnValue == 0)
|
|
NextState = `CU_DONE;
|
|
else
|
|
NextState = `CU_ACK_NPU;
|
|
|
|
|
|
end
|
|
//-----------------------------------------
|
|
`CU_DONE:
|
|
begin
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
|
|
oCodeInstructioPointer = 0;
|
|
oUCodeEnable = 0;
|
|
oGFUEnable = 0;
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 0;
|
|
oFlipMem = 1;
|
|
oDone = 1;
|
|
oResultCommited = 0;
|
|
//oIncCurrentPitch = 0;
|
|
|
|
|
|
NextState = `CU_DONE;
|
|
|
|
end
|
|
//-----------------------------------------
|
|
/*
|
|
Here we no longer use GFU so set Enable to zero
|
|
*/
|
|
`CU_TRIGGER_USERPIXELSHADER:
|
|
begin
|
|
`ifdef DEBUG_CU
|
|
$display("%d Control: CU_TRIGGER_PSU\n",$time);
|
|
`endif
|
|
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
|
|
oCodeInstructioPointer = `ENTRYPOINT_INDEX_PIXELSHADER;
|
|
oUCodeEnable = 1;
|
|
oGFUEnable = 0;//*
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 1;
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
//oIncCurrentPitch = 0;
|
|
|
|
|
|
NextState = `CU_WAIT_FOR_USERPIXELSHADER;
|
|
end
|
|
//-----------------------------------------
|
|
`CU_WAIT_FOR_USERPIXELSHADER:
|
|
begin
|
|
|
|
// `ifdef DEBUG_CU
|
|
// $display("%d Control: CU_TRIGGER_PSU\n",$time);
|
|
// `endif
|
|
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
|
|
oCodeInstructioPointer = `ENTRYPOINT_INDEX_PIXELSHADER;
|
|
oUCodeEnable = 0;
|
|
oGFUEnable = 0;
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 1;
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
//oIncCurrentPitch = 0;
|
|
|
|
|
|
if ( iUCodeDone )
|
|
NextState = `CU_ACK_USERPIXELSHADER;
|
|
else
|
|
NextState = `CU_WAIT_FOR_USERPIXELSHADER;
|
|
|
|
end
|
|
//-----------------------------------------
|
|
`CU_ACK_USERPIXELSHADER:
|
|
begin
|
|
`ifdef DEBUG_CU
|
|
$display("%d Control: CU_ACK_PSU\n",$time);
|
|
`endif
|
|
|
|
//oRamBusOwner = `REG_BUS_OWNED_BY_UCODE;
|
|
oCodeInstructioPointer = 0; //*
|
|
oUCodeEnable = 0; //*
|
|
oGFUEnable = 0;
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 1;
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 1;
|
|
//oIncCurrentPitch = 0;
|
|
|
|
if ( iUCodeDone == 0)
|
|
NextState = `CU_TRIGGER_NPU;//`CU_TRIGGER_PCU;
|
|
else
|
|
NextState = `CU_ACK_USERPIXELSHADER;
|
|
|
|
|
|
end
|
|
//---------------------------------------------------
|
|
default:
|
|
begin
|
|
|
|
`ifdef DEBUG_CU
|
|
$display("%d Control: ERROR Undefined State\n",$time);
|
|
`endif
|
|
|
|
//oRamBusOwner = 0;
|
|
oCodeInstructioPointer = 0;
|
|
oUCodeEnable = 0;
|
|
oGFUEnable = 0;
|
|
oIOWritePixel = 0;
|
|
rResetHitFlop = 0;
|
|
rHitFlopEnable = 0;
|
|
oTriggerTFF = 0;
|
|
oSetCurrentPitch = 0;
|
|
oFlipMemEnabled = 0;
|
|
oFlipMem = 0;
|
|
oDone = 0;
|
|
oResultCommited = 0;
|
|
//oIncCurrentPitch = 0;
|
|
|
|
NextState = `CU_AFTER_RESET_STATE;
|
|
end
|
|
//-----------------------------------------
|
|
|
|
endcase
|
|
|
|
end //always
|
|
endmodule
|
|
|
No newline at end of file
|
No newline at end of file
|
