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Commit cd341af8 authored by Andrey Filippov's avatar Andrey Filippov
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simulating cmprs_afi_mux

parent c71eec74
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Showing with 316 additions and 27 deletions
axi/cmprs_afi_mux.v
View file @ cd341af8
......@@ -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
View file @ cd341af8
......@@ -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
View file @ cd341af8
......@@ -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
View file @ cd341af8
......@@ -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
View file @ cd341af8
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