Vortex 2.0 changes:
+ Microarchitecture optimizations + 64-bit support + Xilinx FPGA support + LLVM-16 support + Refactoring and quality control fixes minor update minor update minor update minor update minor update minor update cleanup cleanup cache bindings and memory perf refactory minor update minor update hw unit tests fixes minor update minor update minor update minor update minor update minor udpate minor update minor update minor update minor update minor update minor update minor update minor updates minor updates minor update minor update minor update minor update minor update minor update minor updates minor updates minor updates minor updates minor update minor update
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124
hw/rtl/core/VX_smem_unit.sv
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124
hw/rtl/core/VX_smem_unit.sv
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// Copyright © 2019-2023
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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`include "VX_define.vh"
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module VX_smem_unit import VX_gpu_pkg::*; #(
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parameter CORE_ID = 0
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) (
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input wire clk,
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input wire reset,
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`ifdef PERF_ENABLE
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output cache_perf_t cache_perf,
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`endif
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VX_mem_bus_if.slave dcache_bus_in_if [DCACHE_NUM_REQS],
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VX_mem_bus_if.master dcache_bus_out_if [DCACHE_NUM_REQS]
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);
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`UNUSED_PARAM (CORE_ID)
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localparam SMEM_ADDR_WIDTH = `SMEM_LOG_SIZE - `CLOG2(DCACHE_WORD_SIZE);
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wire [DCACHE_NUM_REQS-1:0] smem_req_valid;
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wire [DCACHE_NUM_REQS-1:0] smem_req_rw;
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wire [DCACHE_NUM_REQS-1:0][SMEM_ADDR_WIDTH-1:0] smem_req_addr;
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wire [DCACHE_NUM_REQS-1:0][DCACHE_WORD_SIZE-1:0] smem_req_byteen;
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wire [DCACHE_NUM_REQS-1:0][DCACHE_WORD_SIZE*8-1:0] smem_req_data;
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wire [DCACHE_NUM_REQS-1:0][DCACHE_NOSM_TAG_WIDTH-1:0] smem_req_tag;
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wire [DCACHE_NUM_REQS-1:0] smem_req_ready;
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wire [DCACHE_NUM_REQS-1:0] smem_rsp_valid;
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wire [DCACHE_NUM_REQS-1:0][DCACHE_WORD_SIZE*8-1:0] smem_rsp_data;
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wire [DCACHE_NUM_REQS-1:0][DCACHE_NOSM_TAG_WIDTH-1:0] smem_rsp_tag;
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wire [DCACHE_NUM_REQS-1:0] smem_rsp_ready;
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`RESET_RELAY (smem_reset, reset);
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VX_shared_mem #(
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.INSTANCE_ID($sformatf("core%0d-smem", CORE_ID)),
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.SIZE (1 << `SMEM_LOG_SIZE),
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.NUM_REQS (DCACHE_NUM_REQS),
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.NUM_BANKS (`SMEM_NUM_BANKS),
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.WORD_SIZE (DCACHE_WORD_SIZE),
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.ADDR_WIDTH (SMEM_ADDR_WIDTH),
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.UUID_WIDTH (`UUID_WIDTH),
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.TAG_WIDTH (DCACHE_NOSM_TAG_WIDTH)
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) shared_mem (
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.clk (clk),
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.reset (smem_reset),
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`ifdef PERF_ENABLE
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.cache_perf (cache_perf),
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`endif
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// Core request
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.req_valid (smem_req_valid),
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.req_rw (smem_req_rw),
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.req_byteen (smem_req_byteen),
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.req_addr (smem_req_addr),
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.req_data (smem_req_data),
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.req_tag (smem_req_tag),
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.req_ready (smem_req_ready),
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// Core response
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.rsp_valid (smem_rsp_valid),
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.rsp_data (smem_rsp_data),
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.rsp_tag (smem_rsp_tag),
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.rsp_ready (smem_rsp_ready)
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);
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VX_mem_bus_if #(
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.DATA_SIZE (DCACHE_WORD_SIZE),
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.TAG_WIDTH (DCACHE_NOSM_TAG_WIDTH)
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) switch_out_bus_if[2 * DCACHE_NUM_REQS]();
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`RESET_RELAY (switch_reset, reset);
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for (genvar i = 0; i < DCACHE_NUM_REQS; ++i) begin
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assign smem_req_valid[i] = switch_out_bus_if[i * 2 + 1].req_valid;
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assign smem_req_rw[i] = switch_out_bus_if[i * 2 + 1].req_data.rw;
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assign smem_req_byteen[i] = switch_out_bus_if[i * 2 + 1].req_data.byteen;
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assign smem_req_data[i] = switch_out_bus_if[i * 2 + 1].req_data.data;
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assign smem_req_tag[i] = switch_out_bus_if[i * 2 + 1].req_data.tag;
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assign switch_out_bus_if[i * 2 + 1].req_ready = smem_req_ready[i];
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assign switch_out_bus_if[i * 2 + 1].rsp_valid = smem_rsp_valid[i];
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assign switch_out_bus_if[i * 2 + 1].rsp_data.data = smem_rsp_data[i];
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assign switch_out_bus_if[i * 2 + 1].rsp_data.tag = smem_rsp_tag[i];
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assign smem_rsp_ready[i] = switch_out_bus_if[i * 2 + 1].rsp_ready;
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assign smem_req_addr[i] = switch_out_bus_if[i * 2 + 1].req_data.addr[SMEM_ADDR_WIDTH-1:0];
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VX_smem_switch #(
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.NUM_REQS (2),
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.DATA_SIZE (DCACHE_WORD_SIZE),
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.TAG_WIDTH (DCACHE_TAG_WIDTH),
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.TAG_SEL_IDX (0),
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.ARBITER ("P"),
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.OUT_REG_REQ (2),
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.OUT_REG_RSP (2)
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) smem_switch (
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.clk (clk),
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.reset (switch_reset),
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.bus_in_if (dcache_bus_in_if[i]),
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.bus_out_if (switch_out_bus_if[i * 2 +: 2])
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);
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end
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// this bus goes to the dcache
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for (genvar i = 0; i < DCACHE_NUM_REQS; ++i) begin
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`ASSIGN_VX_MEM_BUS_IF (dcache_bus_out_if[i], switch_out_bus_if[i * 2]);
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end
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endmodule
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