Subversion Repositories raytrac

--! @file raytrac.vhd

--! @brief Archivo con el RTL que describe al RayTrac en su totalidad.

--! @author Julián Andrés Guarín Reyes

--------------------------------------------------------------

-- RAYTRAC

-- Author Julian Andres Guarin

-- Rytrac.vhd

-- This file is part of raytrac.

-- 

--     raytrac is free software: you can redistribute it and/or modify

--     it under the terms of the GNU General Public License as published by

--     the Free Software Foundation, either version 3 of the License, or

--     (at your option) any later version.

-- 

--     raytrac is distributed in the hope that it will be useful,

--     but WITHOUT ANY WARRANTY; without even the implied warranty of

--     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

--     GNU General Public License for more details.

-- 

--     You should have received a copy of the GNU General Public License

--     along with raytrac.  If not, see <http://www.gnu.org/licenses/>.

library ieee;

use ieee.std_logic_1164.all;

use work.arithpack.all;

entity raytrac is

        port (

                clk : in std_logic;

                rst : in std_logic;

                --! Señal de lectura de alguna de las colas de resultados.

                rd      : in std_logic;

                --! Señal de escritura en alguno de los bloques de memoria de operandos o en la cola de instrucciones.

                wr      : in std_logic;

                --! Direccion de escritura o lectura

                add : in std_logic_vector (12 downto 0);

                --! datos de entrada

                d       : in std_logic_vector (31 downto 0);

                --! Interrupciones

                int     : out std_logic_vector (7 downto 0);

                --! Salidas

                q : out std_logic_vector (31 downto 0)

        );

end entity;

architecture raytrac_arch of raytrac is

        --! Señales de State Machine -> Memblock

        --!TBXSTART:SM

        signal s_int_rd_add             : std_logic_vector (17 downto 0);

        signal s_adda                   : std_logic_vector (8 downto 0);

        signal s_addb                   : std_logic_vector (8 downto 0);

        signal s_iq_rd_ack              : std_logic;

        --! Señales de State Machine -> DataPathControl

        signal s_sync_chain_0   : std_logic;

        signal s_dpc_uca                : std_logic_vector(2 downto 0);

        signal s_eoi                    : std_logic;

        signal s_sign                   : std_logic;

        --!TBXEND

        --! Señales de State Machine -> Testbench

        signal s_smState                : macState;

        --!TBXSTART:MBLK

        --! Señales de Memblock -> State Machine

        signal s_iq_empty               : std_logic;

        signal s_iq                             : std_logic_vector (31 downto 0);

        --! Señales de Memblock -> Interruption Machine

        signal s_rfull_events   : std_logic_vector (3 downto 0); --Estas señales tambien entran a DPC.

        --! Señales de Memblock -> DPC.

        signal s_q                              : vectorblock12;

        signal s_normfifo_q             : std_logic_vector (3*32-1 downto 0);

        signal s_dpfifo_q               : std_logic_vector (2*32-1 downto 0);

        --!TBXEND

        --!TXBXSTART:SQR32

        --!Señales de Bloque de Raíz Cuadrada a DPC

        signal s_sq32                   : std_logic_vector (31 downto 0);

        --!TBXEND

        --!TXBXSTART:INV32

        --!Señales del bloque inversor a DPC.

        signal s_qout32                 : std_logic_vector (31 downto 0);

        --!TBXEND

        --!TXBXSTART:DPC

        --! Señales de DataPathControl -> State Machine

        signal s_full_r                 : std_logic;

        --! Señales de DPC a sqrt32.

        signal s_rd32                   : std_logic_vector (31 downto 0);

        --! Señales de DPC a inv32.

        signal s_dvd32                  : std_logic_vector (31 downto 0);

        --! Señales de DPC  a invr32.

        --! Se&ntilde que va desde DPC -> Memblock

        signal s_resultfifo_wr  : std_logic_vector (7 downto 0);

        signal s_dpfifo_w               : std_logic;

        signal s_dpfifo_r               : std_logic;

        signal s_dpfifo_d               : std_logic_vector (2*32-1 downto 0);

        signal s_normfifo_w             : std_logic;

        signal s_normfifo_r             : std_logic;

        signal s_results_d              : vectorblock08;

        signal s_normfifo_d             : std_logic_vector (3*32-1 downto 0);

        --!Señales de DPC a Interruption Machine

        signal s_eoi_events             : std_logic_vector (3 downto 0);

        --! Señales de DPC a ArithBlock

        signal s_f                              : vectorblock12;

        signal s_a                              : vectorblock08;

        --! Parcialmente las señales de salida de los sumadores van al data path control.

        signal s_s                              : vectorblock04;

        signal s_p                              : vectorblock06;

        --!TBXEND

        signal s_resultsfifo_w  : std_logic_vector (4 downto 0);

        --!TBXSTART:IM

        --! Señales de Interruption Machine al testbench

        signal s_iCtrlState             : iCtrlState;

        --!TBXEND       

begin

        --! Signo de los bloques de suma

        s_sign <= not(s_dpc_uca(2)) and s_dpc_uca(1);

        --! Instanciar el bloque de memorias MEMBLOCK

        s_resultfifo_wr <= s_resultsfifo_w(4)&s_resultsfifo_w(4)&s_resultsfifo_w(4)&s_resultsfifo_w(3)&s_resultsfifo_w(2)&s_resultsfifo_w(1)&s_resultsfifo_w(2)&s_resultsfifo_w(0);

        s_int_rd_add  <= s_addb&s_adda;

        --!TBXINSTANCESTART

        MemoryBlock : memblock

        generic map (

                blocksize                                       => 512,

                external_readable_widthad       => 3,

                external_writeable_widthad      => 4

        )

        port map (

                clk                                     => clk,

                rst                                     => rst,

                dpfifo_rd                       => s_dpfifo_r,

                normfifo_rd                     => s_normfifo_r,

                dpfifo_wr                       => s_dpfifo_w,

                normfifo_wr                     => s_normfifo_w,

                instrfifo_rd            => s_iq_rd_ack,

                resultfifo_wr           => s_resultfifo_wr,

                instrfifo_empty         => s_iq_empty,

                ext_rd                          => rd,

                ext_wr                          => wr,

                ext_wr_add                      => add,

                ext_rd_add                      => add(12 downto 10),

                ext_d                           => d,

                resultfifo_full         => s_rfull_events,

                int_d                           => s_results_d,

                ext_q                           => q,

                instrfifo_q                     => s_iq,

                int_q                           => s_q,

                int_rd_add                      => s_int_rd_add,

                dpfifo_d                        => s_dpfifo_d,

                normfifo_d                      => s_normfifo_d,

                dpfifo_q                        => s_dpfifo_q,

                normfifo_q                      => s_normfifo_q

        );

        --!TBXINSTANCEEND

        --! Instanciar el bloque DPC

        --!TBXINSTANCESTART

        DataPathControl_And_Syncronization_Block: dpc

        port map (

                clk                             => clk,

                rst                             => rst,

                paraminput              => s_q,

                prd32blko               => s_p,

                add32blko               => s_s,

                sqr32blko               => s_sq32,

                inv32blko               => s_qout32,

                fifo32x23_q             => s_normfifo_q,

                fifo32x09_q             => s_dpfifo_q,

                unary                   => s_dpc_uca(2),

                crossprod               => s_dpc_uca(1),

                addsub                  => s_dpc_uca(0),

                sync_chain_0    => s_sync_chain_0,

                eoi_int                 => s_eoi,

                eoi_demuxed_int => s_eoi_events,

                sqr32blki               => s_rd32,

                inv32blki               => s_dvd32,

                fifo32x26_d             => s_normfifo_d,

                fifo32x09_d             => s_dpfifo_d,

                prd32blki               => s_f,

                add32blki               => s_a,

                resw                    => s_resultsfifo_w,

                fifo32x09_w             => s_dpfifo_w,

                fifo32x23_w             => s_normfifo_w,

                fifo32x09_r             => s_dpfifo_r,

                fifo32x23_r             => s_normfifo_r,

                resf_vector             => s_rfull_events,

                resf_event              => s_full_r,

                resultoutput    => s_results_d

        );

        --!TBXINSTANCEEND

        --! Instanciar el bloque de inversion

        --!TBXINSTANCESTART

        inversion_block : invr32

        port map (

                clk             => clk,

                dvd32   => s_dvd32,

                qout32  => s_qout32

        );

        --!TBXINSTANCEEND

        --! Instanciar el bloque de raíz cuadrada.

        --!TBXINSTANCESTART

        square_root : sqrt32

        port map (

                clk     => clk,

                rd32    => s_rd32,

                sq32    => s_sq32

        );

        --!TBXINSTANCEEND

        --! Instanciar el bloque aritmético.

        --!TBXINSTANCESTART

        arithmetic_block : arithblock

        port map (

                clk => clk,

                rst => rst,

                dpc => s_sign,

                f       => s_f,

                a       => s_a,

                s       => s_s,

                p       => s_p

        );

        --!TBXINSTANCEEND

        --! Instanciar la maquina de interrupciones

        --!TBXINSTANCESTART

        interruption_machine : im

        generic map (

                num_events              => 4,

                cycles_to_wait  => 1023

        )

        port map (

                clk                             => clk,

                rst                             => rst,

                rfull_events    => s_rfull_events,

                eoi_events              => s_eoi_events,

                eoi_int                 => int(3 downto 0),

                rfull_int               => int(7 downto 4),

                state                   => s_iCtrlState

        );

        --!TBXINSTANCEEND

        --!Instanciar la maquina de estados

        --!TBXINSTANCESTART

        state_machine : sm

        port map (

                clk                     => clk,

                rst                     => rst,

                instrQq                 => s_iq,

                instrQ_empty    => s_iq_empty,

                adda                    => s_adda,

                addb                    => s_addb,

                sync_chain_0    => s_sync_chain_0,

                instrRdAckd             => s_iq_rd_ack,

                full_r                  => s_full_r,

                eoi                             => s_eoi,

                dpc_uca                 => s_dpc_uca,

                state                   => s_smState

        );

        --!TBXINSTANCEEND

end architecture;