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This commit is contained in:
Richard Yan
2024-07-20 23:33:56 -07:00
parent 1833e8a176
commit 7d422cc9b0
4 changed files with 170 additions and 29 deletions
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108
hw/rtl/libs/VX_dp_ram.sv
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@@ -1,10 +1,10 @@
// Copyright © 2019-2023
//
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -20,17 +20,17 @@ module VX_dp_ram #(
parameter WRENW = 1,
parameter OUT_REG = 0,
parameter NO_RWCHECK = 0,
parameter LUTRAM = 0,
parameter LUTRAM = 0,
parameter INIT_ENABLE = 0,
parameter INIT_FILE = "",
parameter [DATAW-1:0] INIT_VALUE = 0,
parameter ADDRW = `LOG2UP(SIZE)
) (
) (
input wire clk,
input wire read,
input wire write,
input wire [WRENW-1:0] wren,
input wire [ADDRW-1:0] waddr,
input wire [ADDRW-1:0] waddr,
input wire [DATAW-1:0] wdata,
input wire [ADDRW-1:0] raddr,
output wire [DATAW-1:0] rdata
@@ -48,14 +48,14 @@ module VX_dp_ram #(
ram[i] = INIT_VALUE; \
end \
end
`UNUSED_VAR (read)
`ifdef SYNTHESIS
if (WRENW > 1) begin
`ifdef QUARTUS
if (LUTRAM != 0) begin
if (OUT_REG != 0) begin
if (OUT_REG != 0) begin
reg [DATAW-1:0] rdata_r;
`USE_FAST_BRAM reg [WRENW-1:0][WSELW-1:0] ram [SIZE-1:0];
`RAM_INITIALIZATION
@@ -134,7 +134,7 @@ module VX_dp_ram #(
if (LUTRAM != 0) begin
`USE_FAST_BRAM reg [DATAW-1:0] ram [SIZE-1:0];
`RAM_INITIALIZATION
if (OUT_REG != 0) begin
if (OUT_REG != 0) begin
reg [DATAW-1:0] rdata_r;
always @(posedge clk) begin
if (write) begin
@@ -162,10 +162,10 @@ module VX_dp_ram #(
end else begin
`ifndef FIRESIM
if (DATAW == 1024 && SIZE == 16) begin // dcache data
dcache_data ram (
(* dont_touch = "yes" *) dcache_data ram (
.R0_addr(raddr),
.R0_clk(clk),
.R0_data(rdata),
.R0_data(/*rdata*/),
.R0_en(read),
.W0_addr(waddr),
.W0_clk(clk),
@@ -174,10 +174,10 @@ module VX_dp_ram #(
.W0_mask(wren)
);
end else if (DATAW == 305 && SIZE == 8) begin // mshr
cache_mshr ram (
(* dont_touch = "yes" *) cache_mshr ram (
.R0_addr(raddr),
.R0_clk(clk),
.R0_data(rdata),
.R0_data(/*rdata*/),
.R0_en(read),
.W0_addr(waddr),
.W0_clk(clk),
@@ -185,10 +185,10 @@ module VX_dp_ram #(
.W0_en(write)
);
end else if (DATAW == 24 && SIZE == 16) begin // dcache tags
dcache_tags ram (
(* dont_touch = "yes" *) dcache_tags ram (
.R0_addr(raddr),
.R0_clk(clk),
.R0_data(rdata),
.R0_data(/*rdata*/),
.R0_en(read),
.W0_addr(waddr),
.W0_clk(clk),
@@ -196,10 +196,10 @@ module VX_dp_ram #(
.W0_en(write)
);
end else if (DATAW == 1024 && SIZE == 128) begin // icache data
icache_data ram (
(* dont_touch = "yes" *) icache_data ram (
.R0_addr(raddr),
.R0_clk(clk),
.R0_data(rdata),
.R0_data(/*rdata*/),
.R0_en(read),
.W0_addr(waddr),
.W0_clk(clk),
@@ -208,17 +208,28 @@ module VX_dp_ram #(
.W0_mask(wren)
);
end else if (DATAW == 21 && SIZE == 128) begin // icache tags
icache_tags ram (
(* dont_touch = "yes" *) icache_tags ram (
.R0_addr(raddr),
.R0_clk(clk),
.R0_data(rdata),
.R0_data(/*rdata*/),
.R0_en(read),
.W0_addr(waddr),
.W0_clk(clk),
.W0_data(wdata),
.W0_en(write)
);
end else begin
end else if (DATAW == 32 && SIZE == 64) begin // register file
(* dont_touch = "yes" *) rf_bank ram (
.R0_addr(raddr),
.R0_clk(clk),
.R0_data(/*rdata*/),
.R0_en(read),
.W0_addr(waddr),
.W0_clk(clk),
.W0_data(wdata),
.W0_en(write)
);
end // else begin
`endif
if (OUT_REG != 0) begin
reg [DATAW-1:0] ram [SIZE-1:0];
@@ -264,7 +275,7 @@ module VX_dp_ram #(
end
end
`ifndef FIRESIM
end
// end
`endif
end
`endif
@@ -273,7 +284,7 @@ module VX_dp_ram #(
if (LUTRAM != 0) begin
`USE_FAST_BRAM reg [DATAW-1:0] ram [SIZE-1:0];
`RAM_INITIALIZATION
if (OUT_REG != 0) begin
if (OUT_REG != 0) begin
reg [DATAW-1:0] rdata_r;
always @(posedge clk) begin
if (write) begin
@@ -293,6 +304,51 @@ module VX_dp_ram #(
assign rdata = ram[raddr];
end
end else begin
if (DATAW == 305 && SIZE == 8) begin // mshr
(* dont_touch = "yes" *) cache_mshr ram (
.R0_addr(raddr),
.R0_clk(clk),
.R0_data(/*rdata*/),
.R0_en(read),
.W0_addr(waddr),
.W0_clk(clk),
.W0_data(wdata),
.W0_en(write)
);
end else if (DATAW == 24 && SIZE == 16) begin // dcache tags
(* dont_touch = "yes" *) dcache_tags ram (
.R0_addr(raddr),
.R0_clk(clk),
.R0_data(/*rdata*/),
.R0_en(read),
.W0_addr(waddr),
.W0_clk(clk),
.W0_data(wdata),
.W0_en(write)
);
end else if (DATAW == 21 && SIZE == 128) begin // icache tags
(* dont_touch = "yes" *) icache_tags ram (
.R0_addr(raddr),
.R0_clk(clk),
.R0_data(/*rdata*/),
.R0_en(read),
.W0_addr(waddr),
.W0_clk(clk),
.W0_data(wdata),
.W0_en(write)
);
end else if (DATAW == 32 && SIZE == 64) begin // register file
(* dont_touch = "yes" *) rf_bank ram (
.R0_addr(raddr),
.R0_clk(clk),
.R0_data(/*rdata*/),
.R0_en(read),
.W0_addr(waddr),
.W0_clk(clk),
.W0_data(wdata),
.W0_en(write)
);
end // else begin
if (OUT_REG != 0) begin
reg [DATAW-1:0] ram [SIZE-1:0];
reg [DATAW-1:0] rdata_r;
@@ -328,7 +384,7 @@ module VX_dp_ram #(
end
end
end
end
end
`else
// RAM emulation
reg [DATAW-1:0] ram [SIZE-1:0];
@@ -339,8 +395,8 @@ module VX_dp_ram #(
assign ram_n[i * WSELW +: WSELW] = ((WRENW == 1) | wren[i]) ? wdata[i * WSELW +: WSELW] : ram[waddr][i * WSELW +: WSELW];
end
if (OUT_REG != 0) begin
reg [DATAW-1:0] rdata_r;
if (OUT_REG != 0) begin
reg [DATAW-1:0] rdata_r;
always @(posedge clk) begin
if (write) begin
ram[waddr] <= ram_n;
@@ -350,7 +406,7 @@ module VX_dp_ram #(
end
end
assign rdata = rdata_r;
end else begin
end else begin
reg [DATAW-1:0] prev_data;
reg [ADDRW-1:0] prev_waddr;
reg prev_write;
@@ -361,7 +417,7 @@ module VX_dp_ram #(
prev_write <= (| wren);
prev_data <= ram[waddr];
prev_waddr <= waddr;
end
end
if (LUTRAM || !NO_RWCHECK) begin
`UNUSED_VAR (prev_write)
`UNUSED_VAR (prev_data)