74 lines
2.8 KiB
Systemverilog
74 lines
2.8 KiB
Systemverilog
// SPDX-License-Identifier: Apache-2.0
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// Copyright 2020 Western Digital Corporation or its affiliates.
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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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//
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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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//********************************************************************************
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// $Id$
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//
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//
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// Owner:
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// Function: LSU Trigger logic
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// Comments:
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//
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//********************************************************************************
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module el2_lsu_trigger
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import el2_pkg::*;
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#(
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`include "el2_param.vh"
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) (
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input el2_trigger_pkt_t [ 3:0] trigger_pkt_any, // trigger packet from dec
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input el2_lsu_pkt_t lsu_pkt_m, // lsu packet
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input logic [31:0] lsu_addr_m, // address
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input logic [31:0] store_data_m, // store data
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output logic [3:0] lsu_trigger_match_m // match result
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);
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logic trigger_enable;
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logic [ 3:0][31:0] lsu_match_data;
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logic [ 3:0] lsu_trigger_data_match;
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logic [31:0] store_data_trigger_m;
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logic [31:0] ldst_addr_trigger_m;
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// Generate the trigger enable (This is for power)
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always_comb begin
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trigger_enable = 1'b0;
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for (int i = 0; i < 4; i++) begin
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trigger_enable |= trigger_pkt_any[i].m;
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end
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end
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assign store_data_trigger_m[31:0] = {({16{lsu_pkt_m.word}} & store_data_m[31:16]),({8{(lsu_pkt_m.half | lsu_pkt_m.word)}} & store_data_m[15:8]), store_data_m[7:0]} & {32{trigger_enable}};
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assign ldst_addr_trigger_m[31:0] = lsu_addr_m[31:0] & {32{trigger_enable}};
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for (genvar i = 0; i < 4; i++) begin
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assign lsu_match_data[i][31:0] = ({32{~trigger_pkt_any[i].select}} & ldst_addr_trigger_m[31:0]) |
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({32{trigger_pkt_any[i].select & trigger_pkt_any[i].store}} & store_data_trigger_m[31:0]);
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rvmaskandmatch trigger_match (
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.mask (trigger_pkt_any[i].tdata2[31:0]),
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.data (lsu_match_data[i][31:0]),
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.masken(trigger_pkt_any[i].match),
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.match (lsu_trigger_data_match[i])
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);
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assign lsu_trigger_match_m[i] = lsu_pkt_m.valid & ~lsu_pkt_m.dma & trigger_enable &
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((trigger_pkt_any[i].store & lsu_pkt_m.store) | (trigger_pkt_any[i].load & lsu_pkt_m.load & ~trigger_pkt_any[i].select)) &
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lsu_trigger_data_match[i];
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end
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endmodule // el2_lsu_trigger
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