simulating cmprs_afi_mux

axi/cmprs_afi_mux.v

@@ -23,11 +23,33 @@
 module  cmprs_afi_mux#(
     parameter CMPRS_AFIMUX_ADDR=                'h140, //TODO: assign valid address
     parameter CMPRS_AFIMUX_MASK=                'h7f0,
-    parameter CMPRS_AFIMUX_EN=                  'h0, // enables (gl;obal and per-channel)
+    parameter CMPRS_AFIMUX_EN=                  'h0, // enables (global and per-channel)
+/*
+used 10 bits, in each pair [0] - value, [1] - set (0 - nop). [7:0] - per-channel control, [9:8] - common enable/disable (independent)
+*/    
     parameter CMPRS_AFIMUX_RST=                 'h1, // per-channel resets
+/*
+bits [3:0] - persistent per-channel reset (0 - run, 1 - reset)
+ */    
     parameter CMPRS_AFIMUX_MODE=                'h2, // per-channel select - which register to return as status
+/*
+mode == 0 - show EOF pointer, internal
+mode == 1 - show EOF pointer, confirmed
+mode == 2 - show current pointer, internal
+mode == 3 - show current pointer, confirmed
+each group of 4 bits per channel : bits [1:0] - select, bit[2] - sset (0 - nop), bit[3] - not used
+ */    
     parameter CMPRS_AFIMUX_STATUS_CNTRL=        'h4, // .. 'h7
+/*
+    4 consecutive locations, per-channel status control 
+*/    
     parameter CMPRS_AFIMUX_SA_LEN=              'h8, // .. 'hf
+/*
+    27-bit "chunk" addresses and lengths. 1 chunk = 32 bytes, so 27 bit covers all 2^32 adderss range
+     8 .. 11 - per-channel start adddresses,
+    12 .. 15 - per-channel buffer lengths (will roll over to start address)
+(0..3 - start addresses, 4..7 - lengths)    
+*/    
 
     parameter CMPRS_AFIMUX_STATUS_REG_ADDR=     'h20,  //Uses 4 locations TODO: assign valid address
     parameter CMPRS_AFIMUX_WIDTH =              26, // maximal for status: currently only works with 26)
@@ -147,6 +169,7 @@ module  cmprs_afi_mux#(
     reg   [3:0] fifo_flush_d;      // fifo_flush* delayed by 1 clk (to detect rising edge
     reg   [3:0] eof_stb;           // single-cycle pulse after fifo_flush is asserted
 //    reg   [1:0] w64_cnt;           // count 64-bit words in a chunk
+// adjusted counters used for channel arbitration
     reg  [35:0] counts_corr0; // registers to hold corrected (decremented currently processed ones if any) fifo count values, MSB - needs flush
     reg  [17:0] counts_corr1; // first arbitration level winning values
     reg   [8:0] counts_corr2;      // second arbitration level winning values
@@ -166,6 +189,8 @@ module  cmprs_afi_mux#(
     reg   [3:0] busy; // TODO: adjust number of bits. During continuous run busy is deasseted for 1 clock cycle
     wire        done_burst_w; // de-asset busy
     wire        pre_busy_w;
+    reg         first_busy; // cycle after pre_busy_w
+    reg   [3:0] pend_last;  // waiting for last chunk
     reg         last_burst_in_frame;
 //    reg   [1:0] wlen32; // 2 high bits of burst len (LSB are always 2'b11)
     
@@ -235,17 +260,30 @@ module  cmprs_afi_mux#(
             sa_len_d <= cmd_data[26:0];
             sa_len_wa <= cmd_a[2:0];
         end
-        if (cmd_we_en_w)  en_mclk <=  cmd_data[9:0];
-        if (cmd_we_rst_w) rst_mclk <= cmd_data[3:0];
+        if      (mrst)         en_mclk <=  0;
+        else if (cmd_we_en_w)  en_mclk <=  cmd_data[9:0];
+        
+        if      (mrst)         rst_mclk <=  ~0;
+        else if (cmd_we_rst_w) rst_mclk <= cmd_data[3:0];
     end
 
     always @ (posedge hclk) begin
-        reset_pointers <= (en && !en_d)? 4'hf : (en_rst ? rst_mclk : 4'h0);
-        if (en_we && en_mclk[1]) en_chn[0] <= en_mclk[0];
-        if (en_we && en_mclk[3]) en_chn[1] <= en_mclk[2];
-        if (en_we && en_mclk[5]) en_chn[2] <= en_mclk[4];
-        if (en_we && en_mclk[7]) en_chn[3] <= en_mclk[6];
-        if (en_we && en_mclk[9]) en <=        en_mclk[8];
+        reset_pointers <= ((en && !en_d) || hrst)? 4'hf : (en_rst ? rst_mclk : 4'h0);
+        if      (hrst)                en_chn[0] <= 0;
+        else if (en_we && en_mclk[1]) en_chn[0] <= en_mclk[0];
+
+        if      (hrst)                en_chn[1] <= 0;
+        else if (en_we && en_mclk[3]) en_chn[1] <= en_mclk[2];
+
+        if      (hrst)                en_chn[2] <= 0;
+        else if (en_we && en_mclk[5]) en_chn[2] <= en_mclk[4];
+
+        if      (hrst)                en_chn[3] <= 0;
+        else if (en_we && en_mclk[7]) en_chn[3] <= en_mclk[6];
+
+        if      (hrst)                en        <= 0;
+        else if (en_we && en_mclk[9]) en        <= en_mclk[8];
+        
     end
 
     
@@ -323,8 +361,17 @@ module  cmprs_afi_mux#(
         //ready_to_start need_to_bother
         //done_burst
         if      (!en)          busy <= 0;
-        else if (pre_busy_w)   busy <= {busy[2:0],1'b1};
-        else if (done_burst_w) busy <= 0; // {busy[2:0],1'b0};
+//        else if (pre_busy_w)   busy <= {busy[2:0],1'b1};
+//        else if (done_burst_w) busy <= 0; // {busy[2:0],1'b0};
+        else   busy <= {busy[2:0], pre_busy_w | (busy[0] & ~done_burst_w)};
+        
+        if      (!en)          first_busy <= 0;
+        else                   first_busy <= pre_busy_w;
+        
+        if      (!en)          pend_last <= 0;
+        else pend_last <= eof_stb | (pend_last & ~({4{first_busy & last_burst_in_frame}} & fifo_ren )); 
+        
+//pend_last        
         
         if      (!en)        wleft <= 0;
         else if (pre_busy_w) wleft <= {(|counts_corr2[7:2])? 2'b11 : left_to_eof[winner2 * 8 +: 2], 2'b11};
@@ -346,7 +393,7 @@ module  cmprs_afi_mux#(
         
         if (pre_busy_w)  begin
             cur_chn <= winner2;
-            last_burst_in_frame <= last_chunk_w[winner2];
+            last_burst_in_frame <= last_chunk_w[winner2] && pend_last[winner2];
         end
         
         wlast <= done_burst_w; // when wleft==4'h1

axi/cmprs_afi_mux_ptr.v

@@ -55,7 +55,7 @@ module  cmprs_afi_mux_ptr(
     reg  [26:0] chunk_ptr_inc;          // incremented by 1..4 chunk pointer
     reg  [27:0] chunk_ptr_rovr;         // incremented chunk pointer, decremented by length (MSB - sign)
     reg         en_d;                   //enable delayed by 1 cycle
-    wire [ 2:0] sa_len_ra;              // start/len read address
+    wire [ 2:0] sa_len_ra;              // start/len read address (0..3 - start addresses, 4..7 - lengths)
 
     
     assign ptr_resetting = resetting[0];

axi/cmprs_afi_mux_status.v

@@ -48,8 +48,8 @@ module  cmprs_afi_mux_status #(
     output reg               [3:0] chunk_ptr_ra, // full pointer address - {eof,wresp,chn[1:0]}
     input [CMPRS_AFIMUX_WIDTH-1:0] chunk_ptr_rd  // pointer data
 );
-   localparam MODE_IDTH = 15;
-    reg              [MODE_IDTH-1:0] mode_data_mclk; // some bits unused
+   localparam MODE_WIDTH = 15;
+    reg              [MODE_WIDTH-1:0] mode_data_mclk; // some bits unused
     wire                             mode_we_hclk;
     reg                        [7:0] mode_hclk;
     reg                        [1:0] index;
@@ -69,7 +69,7 @@ module  cmprs_afi_mux_status #(
     
     assign stb_w = en && (cntr==0);
     always @ (posedge mclk) begin
-        if (mode_we) mode_data_mclk <= cmd_data[MODE_IDTH-1:0];
+        if (mode_we) mode_data_mclk <= cmd_data[MODE_WIDTH-1:0];
     end
 
     always @ (posedge hclk) begin

simulation_modules/simul_axi_hp_wr.v

@@ -232,26 +232,26 @@ Alex
         if (start_write_burst_w) begin
             if (awid_out != wid_out) begin
                 $display ("%m: at time %t ERROR: awid=%h, awid=%h",$time,awid_out,wid_out);
-                $stop;
+//                $stop;
             end
     
             if (awsize_out != 2'h3) begin
                 $display ("%m: at time %t ERROR: awsize_out=%h, currently only 'h3 (8 bytes) is valid",$time,awsize_out);
-                $stop;
+//                $stop;
             end
         end
         if (awvalid && awready) begin
             if (((awlock ^ VALID_AWLOCK) & VALID_AWLOCK_MASK) != 0) begin
                 $display ("%m: at time %t ERROR: awlock = %h, valid %h with mask %h",$time, awlock, VALID_AWLOCK, VALID_AWLOCK_MASK);
-                $stop;
+//                $stop;
             end
             if (((awcache ^ VALID_AWCACHE) & VALID_AWCACHE_MASK) != 0) begin
                 $display ("%m: at time %t ERROR: awcache = %h, valid %h with mask %h",$time, awcache, VALID_AWCACHE, VALID_AWCACHE_MASK);
-                $stop;
+//                $stop;
             end
             if (((awprot ^ VALID_AWPROT) & VALID_AWPROT_MASK) != 0) begin
                 $display ("%m: at time %t ERROR: awprot = %h, valid %h with mask %h",$time, awprot, VALID_AWPROT, VALID_AWPROT_MASK);
-                $stop;
+//                $stop;
             end
         end
     end

x393_testbench02.tf

@@ -274,12 +274,29 @@ assign #10 gpio_pins[9] = gpio_pins[8];
 
     assign HCLK = x393_i.ps7_i.SAXIHP0ACLK; // shortcut name
 
-// afi loopback
+    wire [31:0] afi1_sim_wr_address;    // output[31:0] SuppressThisWarning VEditor - not used - just view
+    wire [ 5:0] afi1_sim_wid;           // output[5:0]  SuppressThisWarning VEditor - not used - just view
+    wire        afi1_sim_wr_valid;      // output
+    wire        afi1_sim_wr_ready;      // input
+//  reg         afi1_sim_wr_ready;      // input
+    wire [63:0] afi1_sim_wr_data;       // output[63:0] SuppressThisWarning VEditor - not used - just view
+    wire [ 7:0] afi1_sim_wr_stb;        // output[7:0]  SuppressThisWarning VEditor - not used - just view
+    wire [ 3:0] afi1_sim_bresp_latency; // input[3:0] 
+//  reg  [ 3:0] afi1_sim_bresp_latency; // input[3:0] 
+    wire [ 2:0] afi1_sim_wr_cap;        // output[2:0]  SuppressThisWarning VEditor - not used - just view
+    wire [ 3:0] afi1_sim_wr_qos;        // output[3:0]  SuppressThisWarning VEditor - not used - just view
+
+    
+// afi loopback (membridge)
     assign #1 afi_sim_rd_data=  afi_sim_rd_ready?{2'h0,afi_sim_rd_address[31:3],1'h1,  2'h0,afi_sim_rd_address[31:3],1'h0}:64'bx;
     assign #1 afi_sim_rd_valid = afi_sim_rd_ready;
     assign #1 afi_sim_rd_resp = afi_sim_rd_ready?2'b0:2'bx;
     assign #1 afi_sim_wr_ready = afi_sim_wr_valid;
     assign #1 afi_sim_bresp_latency=4'h5; 
+// afi1 (compressor) loopback
+    assign #1 afi1_sim_wr_ready = afi1_sim_wr_valid;
+    assign #1 afi1_sim_bresp_latency=4'h5; 
+
 
 // SAXI_GP0 - histograms to system memory
     wire        SAXI_GP0_CLK; 
@@ -304,9 +321,12 @@ assign #10 gpio_pins[9] = gpio_pins[8];
     reg  [31:0] PS_REG_ADDR;
     reg         PS_REG_WR;
     reg         PS_REG_RD;
+    reg         PS_REG_WR1;
+    reg         PS_REG_RD1;
     reg  [31:0] PS_REG_DIN;
     wire [31:0] PS_REG_DOUT;
     reg  [31:0] PS_RDATA;  // SuppressThisWarning VEditor - not used - just view
+    wire [31:0] PS_REG_DOUT1;
 /*  
     reg  [31:0] afi_reg_addr; 
     reg         afi_reg_wr;
@@ -319,10 +339,15 @@ assign #10 gpio_pins[9] = gpio_pins[8];
     PS_REG_ADDR <= 'bx;
     PS_REG_WR   <= 0;
     PS_REG_RD   <= 0;
+    PS_REG_WR1  <= 0;
+    PS_REG_RD1   <= 0;
     PS_REG_DIN  <= 'bx;
     PS_RDATA    <= 'bx;
   end 
-  always @ (posedge HCLK) if (PS_REG_RD) PS_RDATA <= PS_REG_DOUT;
+  always @ (posedge HCLK) begin
+      if      (PS_REG_RD)  PS_RDATA <= PS_REG_DOUT;
+      else if (PS_REG_RD1) PS_RDATA <= PS_REG_DOUT1;
+  end 
   
     reg [639:0] TEST_TITLE;
   // Simulation signals
@@ -1522,6 +1547,52 @@ simul_axi_hp_wr #(
         .reg_din        (PS_REG_DIN),                        // input[31:0] 
         .reg_dout       (PS_REG_DOUT)                        // output[31:0] 
     );
+    // afi1 - from compressor 
+simul_axi_hp_wr #(
+        .HP_PORT(1)
+    ) simul_axi_hp1_wr_i (
+        .rst            (RST),                               // input
+        .aclk           (x393_i.ps7_i.SAXIHP1ACLK),          // input
+        .aresetn        (),                                  // output
+        .awaddr         (x393_i.ps7_i.SAXIHP1AWADDR),        // input[31:0] 
+        .awvalid        (x393_i.ps7_i.SAXIHP1AWVALID),       // input
+        .awready        (x393_i.ps7_i.SAXIHP1AWREADY),       // output
+        .awid           (x393_i.ps7_i.SAXIHP1AWID),          // input[5:0] 
+        .awlock         (x393_i.ps7_i.SAXIHP1AWLOCK),        // input[1:0] 
+        .awcache        (x393_i.ps7_i.SAXIHP1AWCACHE),       // input[3:0] 
+        .awprot         (x393_i.ps7_i.SAXIHP1AWPROT),        // input[2:0] 
+        .awlen          (x393_i.ps7_i.SAXIHP1AWLEN),         // input[3:0] 
+        .awsize         (x393_i.ps7_i.SAXIHP1AWSIZE),        // input[2:0] 
+        .awburst        (x393_i.ps7_i.SAXIHP1AWBURST),       // input[1:0] 
+        .awqos          (x393_i.ps7_i.SAXIHP1AWQOS),         // input[3:0] 
+        .wdata          (x393_i.ps7_i.SAXIHP1WDATA),         // input[63:0] 
+        .wvalid         (x393_i.ps7_i.SAXIHP1WVALID),        // input
+        .wready         (x393_i.ps7_i.SAXIHP1WREADY),        // output
+        .wid            (x393_i.ps7_i.SAXIHP1WID),           // input[5:0] 
+        .wlast          (x393_i.ps7_i.SAXIHP1WLAST),         // input
+        .wstrb          (x393_i.ps7_i.SAXIHP1WSTRB),         // input[7:0] 
+        .bvalid         (x393_i.ps7_i.SAXIHP1BVALID),        // output
+        .bready         (x393_i.ps7_i.SAXIHP1BREADY),        // input
+        .bid            (x393_i.ps7_i.SAXIHP1BID),           // output[5:0] 
+        .bresp          (x393_i.ps7_i.SAXIHP1BRESP),         // output[1:0] 
+        .wcount         (x393_i.ps7_i.SAXIHP1WCOUNT),        // output[7:0] 
+        .wacount        (x393_i.ps7_i.SAXIHP1WACOUNT),       // output[5:0] 
+        .wrissuecap1en  (x393_i.ps7_i.SAXIHP1WRISSUECAP1EN), // input
+        .sim_wr_address (afi1_sim_wr_address),                // output[31:0] 
+        .sim_wid        (afi1_sim_wid),                       // output[5:0] 
+        .sim_wr_valid   (afi1_sim_wr_valid),                  // output
+        .sim_wr_ready   (afi1_sim_wr_ready),                  // input
+        .sim_wr_data    (afi1_sim_wr_data),                   // output[63:0] 
+        .sim_wr_stb     (afi1_sim_wr_stb),                    // output[7:0] 
+        .sim_bresp_latency(afi1_sim_bresp_latency),           // input[3:0] 
+        .sim_wr_cap     (afi1_sim_wr_cap),                    // output[2:0] 
+        .sim_wr_qos     (afi1_sim_wr_qos),                    // output[3:0] 
+        .reg_addr       (PS_REG_ADDR),                        // input[31:0] 
+        .reg_wr         (PS_REG_WR1),                         // input
+        .reg_rd         (PS_REG_RD1),                         // input
+        .reg_din        (PS_REG_DIN),                         // input[31:0] 
+        .reg_dout       (PS_REG_DOUT1)                        // output[31:0] 
+    );
     
     // SAXI_GP0 - histograms to system memory
     simul_saxi_gp_wr simul_saxi_gp0_wr_i (
@@ -1803,6 +1874,10 @@ task setup_sensor_channel;
     reg   [31:0] last_buf_frame;
     reg   [31:0] camsync_delay;
     reg   [ 3:0] sensor_mask;
+    
+    reg   [26:0] afi_cmprs0_sa;
+    reg   [26:0] afi_cmprs0_len;
+    
 // Setting up a single sensor channel 0, sunchannel 0
 // 
     begin
@@ -1818,6 +1893,9 @@ task setup_sensor_channel;
         external_timestamp = EXTERNAL_TIMESTAMP;
         last_buf_frame =     LAST_BUF_FRAME;
         sensor_mask =        1 << num_sensor;
+        
+        afi_cmprs0_sa =      'h10000000 >> 5;
+        afi_cmprs0_len =     'h10000 >> 5; 
 //        program_curves(
 //            num_sensor,  // input   [1:0] num_sensor;
 //            0);          // input   [1:0] sub_channel;    
@@ -2086,6 +2164,59 @@ task write_cmd_frame_sequencer;
     // just temporarily - enable channel immediately    
     enable_memcntrl_en_dis(4'hc + {2'b0,num_sensor}, 1);
     
+    TEST_TITLE = "PROGRAM AFI_MUX";
+    $display("===================== TEST_%s =========================",TEST_TITLE);
+    
+    afi_mux_program_status ( 
+        0, // input [0:0] port_afi;    // number of AFI port (0 - afi 1, 1 - afi2) // configuration controlled by the code. currently
+                             // both AFI are used: ch0 - cmprs_afi_mux_1.0, ch1 - cmprs_afi_mux_1.1,
+                             //  ch2 - cmprs_afi_mux_2.0, ch3 - cmprs_afi_mux_2
+                             // May be chenged to ch0 - cmprs_afi_mux_1.0, ch1 -cmprs_afi_mux_1.1,
+                             //  ch2 - cmprs_afi_mux_1.2, ch3 - cmprs_afi_mux_1.3
+        num_sensor, // input [1:0] chn_afi;
+        3,   // input [1:0] mode;
+        0); // input [5:0] seq_num;
+    // reset all channels    
+    afi_mux_reset(
+        0, // input [0:0] port_afi;
+        4'hf); // input [3:0] rst_chn;
+    // release resets
+    afi_mux_reset(
+        0, // input [0:0] port_afi;
+        0); // input [3:0] rst_chn;
+        
+    // set report mode (pointer type) - per status    
+    afi_mux_mode_chn (
+        0,          //input [0:0] port_afi;    // number of AFI port.3
+        num_sensor, // input [1:0] chn;  // channel number to set mode for
+/*
+mode == 0 - show EOF pointer, internal
+mode == 1 - show EOF pointer, confirmed
+mode == 2 - show current pointer, internal
+mode == 3 - show current pointer, confirmed
+each group of 4 bits per channel : bits [1:0] - select, bit[2] - sset (0 - nop), bit[3] - not used
+ */    
+        0);         // input [1:0] mode;
+    
+    afi_mux_chn_start_length (
+        0,               // input [0:0] port_afi;    // number of AFI port
+        num_sensor,      // input [ 1:0] chn;  // channel number to set mode for
+        afi_cmprs0_sa,   // input [26:0] sa;   // start address in 32-byte chunks
+        afi_cmprs0_len); //  input [26:0] length;     // channel buffer length in 32-byte chunks
+
+    // enable channel 0 and the whole afi_mux module
+
+    afi_mux_enable_chn (
+        0,          // input [0:0] port_afi;    // number of AFI port
+        num_sensor, // input [1:0] en_chn;  // channel number to enable/disable;
+        1);         // input       en;
+
+    afi_mux_enable (
+        0,          // input [0:0] port_afi;    // number of AFI port
+        1);         // input       en;
+
+
+    
     TEST_TITLE = "GAMMA_CTL";
     $display("===================== TEST_%s =========================",TEST_TITLE);
         set_sensor_gamma_ctl (// doing last to enable sesnor data when everything else is set up
@@ -2104,7 +2235,6 @@ task write_cmd_frame_sequencer;
     // just temporarily - enable channel immediately    
 //    enable_memcntrl_en_dis(4'hc + {2'b0,num_sensor}, 1);
 
-
     end
 endtask
 
@@ -2332,7 +2462,7 @@ task program_status_sensor_io;
     input [5:0] seq_num;
     begin
         program_status (SENSOR_GROUP_ADDR + num_sensor * SENSOR_BASE_INC + SENSIO_RADDR,
-                        SENSI2C_STATUS,
+                        SENSIO_STATUS,
                         mode,
                         seq_num);
     end
@@ -3185,6 +3315,118 @@ function [31 : 0] func_compressor_color_saturation;
     end
 endfunction
 
+// axi_hp channels for the compressed image data
+task afi_mux_program_status;
+    input [0:0] port_afi;    // number of AFI port (0 - afi 1, 1 - afi2) // configuration controlled by the code. currently
+                             // both AFI are used: ch0 - cmprs_afi_mux_1.0, ch1 - cmprs_afi_mux_1.1,
+                             //  ch2 - cmprs_afi_mux_2.0, ch3 - cmprs_afi_mux_2
+                             // May be chenged to ch0 - cmprs_afi_mux_1.0, ch1 -cmprs_afi_mux_1.1,
+                             //  ch2 - cmprs_afi_mux_1.2, ch3 - cmprs_afi_mux_1.3
+    input [1:0] chn_afi;
+    input [1:0] mode;
+    input [5:0] seq_num;
+    reg   [29:0] reg_addr;
+    begin
+        reg_addr = CMPRS_GROUP_ADDR + (port_afi ? CMPRS_AFIMUX_RADDR1 : CMPRS_AFIMUX_RADDR0) + chn_afi;
+        program_status (reg_addr,
+                        CMPRS_AFIMUX_STATUS_CNTRL,
+                        mode,
+                        seq_num);
+    end
+endtask
+
+task afi_mux_reset;
+    input [0:0] port_afi;    // number of AFI port (0 - afi 1, 1 - afi2) // configuration controlled by the code. currently
+                             // both AFI are used: ch0 - cmprs_afi_mux_1.0, ch1 - cmprs_afi_mux_1.1,
+                             //  ch2 - cmprs_afi_mux_2.0, ch3 - cmprs_afi_mux_2
+                             // May be chenged to ch0 - cmprs_afi_mux_1.0, ch1 -cmprs_afi_mux_1.1,
+                             //  ch2 - cmprs_afi_mux_1.2, ch3 - cmprs_afi_mux_1.3
+    input [3:0] rst_chn;
+    reg  [29:0] reg_addr;
+    begin
+        reg_addr = CMPRS_GROUP_ADDR + (port_afi ? CMPRS_AFIMUX_RADDR1 : CMPRS_AFIMUX_RADDR0) + CMPRS_AFIMUX_RST;
+        write_contol_register(reg_addr, {28'b0,rst_chn});                   
+    end
+endtask
+
+task afi_mux_enable_chn;
+    input [0:0] port_afi;    // number of AFI port (0 - afi 1, 1 - afi2) // configuration controlled by the code. currently
+                             // both AFI are used: ch0 - cmprs_afi_mux_1.0, ch1 - cmprs_afi_mux_1.1,
+                             //  ch2 - cmprs_afi_mux_2.0, ch3 - cmprs_afi_mux_2
+                             // May be chenged to ch0 - cmprs_afi_mux_1.0, ch1 -cmprs_afi_mux_1.1,
+                             //  ch2 - cmprs_afi_mux_1.2, ch3 - cmprs_afi_mux_1.3
+    input [1:0] en_chn;  // channel number to enable/disable;
+    input       en;
+    reg  [29:0] reg_addr;
+    reg [31:0] data;
+    begin
+        reg_addr = CMPRS_GROUP_ADDR + (port_afi ? CMPRS_AFIMUX_RADDR1 : CMPRS_AFIMUX_RADDR0) + CMPRS_AFIMUX_EN;
+        data = 0;
+        data[2 * en_chn +: 2] = {1'b1,en};
+        write_contol_register(reg_addr,data);                   
+    end
+endtask
+
+task afi_mux_enable;
+    input [0:0] port_afi;    // number of AFI port (0 - afi 1, 1 - afi2) // configuration controlled by the code. currently
+                             // both AFI are used: ch0 - cmprs_afi_mux_1.0, ch1 - cmprs_afi_mux_1.1,
+                             //  ch2 - cmprs_afi_mux_2.0, ch3 - cmprs_afi_mux_2
+                             // May be chenged to ch0 - cmprs_afi_mux_1.0, ch1 -cmprs_afi_mux_1.1,
+                             //  ch2 - cmprs_afi_mux_1.2, ch3 - cmprs_afi_mux_1.3
+    input       en;
+    reg  [29:0] reg_addr;
+    reg [31:0] data;
+    begin
+        reg_addr = CMPRS_GROUP_ADDR + (port_afi ? CMPRS_AFIMUX_RADDR1 : CMPRS_AFIMUX_RADDR0) + CMPRS_AFIMUX_EN;
+        data = 0;
+        data[2 * 4 +: 2] = {1'b1,en};
+        write_contol_register(reg_addr,data);                   
+    end
+endtask
+
+task afi_mux_mode_chn;
+    input [0:0] port_afi;    // number of AFI port (0 - afi 1, 1 - afi2) // configuration controlled by the code. currently
+                             // both AFI are used: ch0 - cmprs_afi_mux_1.0, ch1 - cmprs_afi_mux_1.1,
+                             //  ch2 - cmprs_afi_mux_2.0, ch3 - cmprs_afi_mux_2
+                             // May be chenged to ch0 - cmprs_afi_mux_1.0, ch1 -cmprs_afi_mux_1.1,
+                             //  ch2 - cmprs_afi_mux_1.2, ch3 - cmprs_afi_mux_1.3
+    input [1:0] mode;
+    input [1:0] chn;        // channel number to set mode for
+    reg  [29:0] reg_addr;
+/*
+mode == 0 - show EOF pointer, internal
+mode == 1 - show EOF pointer, confirmed
+mode == 2 - show current pointer, internal
+mode == 3 - show current pointer, confirmed
+each group of 4 bits per channel : bits [1:0] - select, bit[2] - sset (0 - nop), bit[3] - not used
+ */    
+    
+    reg [31:0] data;
+    begin
+        reg_addr = CMPRS_GROUP_ADDR + (port_afi ? CMPRS_AFIMUX_RADDR1 : CMPRS_AFIMUX_RADDR0) + CMPRS_AFIMUX_MODE;
+        data = 0;
+        data[4 * chn +: 4] = {2'b01, mode};
+        write_contol_register(reg_addr,data);                   
+    end
+endtask
+
+task afi_mux_chn_start_length;
+    input [0:0] port_afi;    // number of AFI port (0 - afi 1, 1 - afi2) // configuration controlled by the code. currently
+                             // both AFI are used: ch0 - cmprs_afi_mux_1.0, ch1 - cmprs_afi_mux_1.1,
+                             //  ch2 - cmprs_afi_mux_2.0, ch3 - cmprs_afi_mux_2
+                             // May be chenged to ch0 - cmprs_afi_mux_1.0, ch1 -cmprs_afi_mux_1.1,
+                             //  ch2 - cmprs_afi_mux_1.2, ch3 - cmprs_afi_mux_1.3
+    input [ 1:0] chn;  // channel number to set mode for
+    input [26:0] sa;   // start address in 32-byte chunks
+    input [26:0] length;     // channel buffer length in 32-byte chunks
+
+    reg  [29:0] reg_addr;
+    begin
+        reg_addr = CMPRS_GROUP_ADDR + (port_afi ? CMPRS_AFIMUX_RADDR1 : CMPRS_AFIMUX_RADDR0) + CMPRS_AFIMUX_SA_LEN + chn;
+        write_contol_register(reg_addr  , {5'b0, sa});                   
+        write_contol_register(reg_addr+4, {5'b0, length});                   
+    end
+endtask
 
 `include "includes/tasks_tests_memory.vh" // SuppressThisWarning VEditor - may be unused
 `include "includes/x393_tasks_afi.vh" // SuppressThisWarning VEditor - may be unused