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Formating.

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This commit is contained in:
Ross Thompson 2023-01-18 16:47:40 -06:00
parent 915987c524
commit c34acab1d7
3 changed files with 20 additions and 19 deletions
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10
pipelined/src/ebu/ahbcacheinterface.sv
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@ -30,7 +30,7 @@
`include "wally-config.vh"
module ahbcacheinterface #(parameter BEATSPERLINE, LINELEN, LOGWPL, LLENPOVERAHBW) (
module ahbcacheinterface #(parameter BEATSPERLINE, LINELEN, AHBWLOGBWPL, LLENPOVERAHBW) (
input logic HCLK, HRESETn,
// bus interface controls
input logic HREADY, // AHB peripheral ready
@ -52,7 +52,7 @@ module ahbcacheinterface #(parameter BEATSPERLINE, LINELEN, LOGWPL, LLENPOVERAHB
input logic [1:0] CacheBusRW, // Cache bus operation, 01: writeback, 10: fetch
output logic CacheBusAck, // Handshack to $ indicating bus transaction completed
output logic [LINELEN-1:0] FetchBuffer, // Register to hold beats of cache line as the arrive from bus
output logic [LOGWPL-1:0] BeatCount, // Beat position within the cache line in the Address Phase
output logic [AHBWLOGBWPL-1:0] BeatCount, // Beat position within the cache line in the Address Phase
output logic SelBusBeat, // Tells the cache to select the word from ReadData or WriteData from BeatCount rather than PAdr
// uncached interface
@ -70,7 +70,7 @@ module ahbcacheinterface #(parameter BEATSPERLINE, LINELEN, LOGWPL, LLENPOVERAHB
localparam integer BeatCountThreshold = BEATSPERLINE - 1; // Largest beat index
logic [`PA_BITS-1:0] LocalHADDR; // Address after selecting between cached and uncached operation
logic [LOGWPL-1:0] BeatCountDelayed; // Beat within the cache line in the second (Data) cache stage
logic [AHBWLOGBWPL-1:0] BeatCountDelayed; // Beat within the cache line in the second (Data) cache stage
logic CaptureEn; // Enable updating the Fetch buffer with valid data from HRDATA
logic [`AHBW/8-1:0] BusByteMaskM; // Byte enables within a word. For cache request all 1s
logic [`AHBW-1:0] PreHWDATA; // AHB Address phase write data
@ -86,7 +86,7 @@ module ahbcacheinterface #(parameter BEATSPERLINE, LINELEN, LOGWPL, LLENPOVERAHB
end
mux2 #(`PA_BITS) localadrmux(PAdr, CacheBusAdr, Cacheable, LocalHADDR);
assign HADDR = ({{`PA_BITS-LOGWPL{1'b0}}, BeatCount} << $clog2(`AHBW/8)) + LocalHADDR;
assign HADDR = ({{`PA_BITS-AHBWLOGBWPL{1'b0}}, BeatCount} << $clog2(`AHBW/8)) + LocalHADDR;
mux2 #(3) sizemux(.d0(Funct3), .d1(`AHBW == 32 ? 3'b010 : 3'b011), .s(Cacheable), .y(HSIZE));
@ -111,7 +111,7 @@ module ahbcacheinterface #(parameter BEATSPERLINE, LINELEN, LOGWPL, LLENPOVERAHB
flopen #(`AHBW/8) HWSTRBReg(HCLK, HREADY, BusByteMaskM[`AHBW/8-1:0], HWSTRB);
buscachefsm #(BeatCountThreshold, LOGWPL) AHBBuscachefsm(
buscachefsm #(BeatCountThreshold, AHBWLOGBWPL) AHBBuscachefsm(
.HCLK, .HRESETn, .Flush, .BusRW, .Stall, .BusCommitted, .BusStall, .CaptureEn, .SelBusBeat,
.CacheBusRW, .CacheBusAck, .BeatCount, .BeatCountDelayed,
.HREADY, .HTRANS, .HWRITE, .HBURST);

14
pipelined/src/ebu/buscachefsm.sv
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@ -28,7 +28,7 @@
`define BURST_EN 1
// HCLK and clk must be the same clock!
module buscachefsm #(parameter integer BeatCountThreshold, LOGWPL) (
module buscachefsm #(parameter integer BeatCountThreshold, AHBWLOGBWPL) (
input logic HCLK,
input logic HRESETn,
@ -47,8 +47,8 @@ module buscachefsm #(parameter integer BeatCountThreshold, LOGWPL) (
output logic CacheBusAck, // Handshack to $ indicating bus transaction completed
// lsu interface
output logic [LOGWPL-1:0] BeatCount, // Beat position within the cache line in the Address Phase
output logic [LOGWPL-1:0] BeatCountDelayed, // Beat within the cache line in the second (Data) cache stage
output logic [AHBWLOGBWPL-1:0] BeatCount, // Beat position within the cache line in the Address Phase
output logic [AHBWLOGBWPL-1:0] BeatCountDelayed, // Beat within the cache line in the second (Data) cache stage
output logic SelBusBeat, // Tells the cache to select the word from ReadData or WriteData from BeatCount rather than PAdr
// BUS interface
@ -63,7 +63,7 @@ module buscachefsm #(parameter integer BeatCountThreshold, LOGWPL) (
(* mark_debug = "true" *) busstatetype CurrState, NextState;
logic [LOGWPL-1:0] NextBeatCount;
logic [AHBWLOGBWPL-1:0] NextBeatCount;
logic FinalBeatCount;
logic [2:0] LocalBurstType;
logic BeatCntEn;
@ -98,11 +98,11 @@ module buscachefsm #(parameter integer BeatCountThreshold, LOGWPL) (
// IEU, LSU, and IFU controls
// Used to store data from data phase of AHB.
flopenr #(LOGWPL) BeatCountReg(HCLK, ~HRESETn | BeatCntReset, BeatCntEn, NextBeatCount, BeatCount);
flopenr #(LOGWPL) BeatCountDelayedReg(HCLK, ~HRESETn | BeatCntReset, BeatCntEn, BeatCount, BeatCountDelayed);
flopenr #(AHBWLOGBWPL) BeatCountReg(HCLK, ~HRESETn | BeatCntReset, BeatCntEn, NextBeatCount, BeatCount);
flopenr #(AHBWLOGBWPL) BeatCountDelayedReg(HCLK, ~HRESETn | BeatCntReset, BeatCntEn, BeatCount, BeatCountDelayed);
assign NextBeatCount = BeatCount + 1'b1;
assign FinalBeatCount = BeatCountDelayed == BeatCountThreshold[LOGWPL-1:0];
assign FinalBeatCount = BeatCountDelayed == BeatCountThreshold[AHBWLOGBWPL-1:0];
assign BeatCntEn = ((NextState == CACHE_WRITEBACK | NextState == CACHE_FETCH) & HREADY & ~Flush) |
(NextState == ADR_PHASE & |CacheBusRW & HREADY);
assign BeatCntReset = NextState == ADR_PHASE;

15
pipelined/src/lsu/lsu.sv
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@ -237,12 +237,14 @@ module lsu (
end else begin
end
if (`BUS) begin : bus
localparam integer LLENWORDSPERLINE = `DCACHE ? `DCACHE_LINELENINBITS/`LLEN : 1; // Number of LLEN words in cacheline
localparam integer LLENLOGBWPL = `DCACHE ? $clog2(LLENWORDSPERLINE) : 1; // Log2 of ^
localparam integer BEATSPERLINE = `DCACHE ? `DCACHE_LINELENINBITS/`AHBW : 1; // Number of AHBW words (beats) in cacheline
localparam integer AHBWLOGBWPL = `DCACHE ? $clog2(BEATSPERLINE) : 1; // Log2 of ^
if(`DCACHE) begin : dcache
localparam integer LINELEN = `DCACHE ? `DCACHE_LINELENINBITS : `XLEN; // Number of bytes in cacheline
localparam integer LLENWORDSPERLINE = `DCACHE_LINELENINBITS/`LLEN; // Number of LLEN words in cacheline
localparam integer LLENLOGBWPL = $clog2(LLENWORDSPERLINE); // Log2 of ^
localparam integer BEATSPERLINE = `DCACHE_LINELENINBITS/`AHBW; // Number of AHBW words (beats) in cacheline
localparam integer AHBWLOGBWPL = $clog2(BEATSPERLINE); // Log2 of ^
localparam integer LINELEN = `DCACHE_LINELENINBITS; // Number of bytes in cacheline
localparam integer LLENPOVERAHBW = `LLEN / `AHBW; // Number of AHB beats in a LLEN word. AHBW cannot be larger than LLEN. (implementation limitation)
logic [LINELEN-1:0] FetchBuffer; // Temporary buffer to hold partially fetched cacheline
logic [`PA_BITS-1:0] DCacheBusAdr; // Cacheline address to fetch or writeback.
logic [AHBWLOGBWPL-1:0] BeatCount; // Position within a cacheline. ahbcacheinterface to cache
@ -250,7 +252,6 @@ module lsu (
logic SelBusBeat; // ahbcacheinterface selects postion in cacheline with BeatCount
logic [1:0] CacheBusRW; // Cache sends request to ahbcacheinterface
logic [1:0] BusRW; // Uncached bus memory access
localparam integer LLENPOVERAHBW = `LLEN / `AHBW; // Number of AHB beats in a LLEN word. AHBW cannot be larger than LLEN. (implementation limitation)
logic CacheableOrFlushCacheM; // Memory address is cacheable or operation is a cache flush
logic [1:0] CacheRWM; // Cache read (10), write (01), AMO (11)
logic [1:0] CacheAtomicM; // Cache AMO
@ -272,7 +273,7 @@ module lsu (
.FetchBuffer, .CacheBusRW,
.CacheBusAck(DCacheBusAck), .InvalidateCache(1'b0));
ahbcacheinterface #(.BEATSPERLINE(BEATSPERLINE), .LINELEN(LINELEN), .LOGWPL(AHBWLOGBWPL), .LLENPOVERAHBW(LLENPOVERAHBW)) ahbcacheinterface(
ahbcacheinterface #(.BEATSPERLINE(BEATSPERLINE), .LINELEN(LINELEN), .AHBWLOGBWPL(AHBWLOGBWPL), .LLENPOVERAHBW(LLENPOVERAHBW)) ahbcacheinterface(
.HCLK(clk), .HRESETn(~reset), .Flush(FlushW),
.HRDATA, .HWDATA(LSUHWDATA), .HWSTRB(LSUHWSTRB),
.HSIZE(LSUHSIZE), .HBURST(LSUHBURST), .HTRANS(LSUHTRANS), .HWRITE(LSUHWRITE), .HREADY(LSUHREADY),