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minor update

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This commit is contained in:
Blaise Tine 2021-04-03 04:22:44 -07:00
parent 4d1b530483
commit f829bd3c18
1 changed files with 15 additions and 9 deletions
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24
hw/rtl/VX_lsu_unit.v
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@ -76,6 +76,7 @@ module VX_lsu_unit #(
reg [`LSUQ_SIZE-1:0][`NUM_THREADS-1:0] rsp_rem_mask;
wire [`NUM_THREADS-1:0] rsp_rem_mask_n;
wire [`NUM_THREADS-1:0] rsp_tmask;
reg [`NUM_THREADS-1:0] req_sent_mask;
wire sent_all_ready;
@ -96,12 +97,12 @@ module VX_lsu_unit #(
&& (0 == req_sent_mask) // first submission only
&& req_wb; // loads only
wire mbuf_pop = dcache_rsp_fire && (rsp_rem_mask_n == 0 || rsp_is_dup);
wire mbuf_pop = dcache_rsp_fire && ~(|rsp_rem_mask_n);
assign mbuf_raddr = dcache_rsp_if.tag[`DCORE_TAG_ID_BITS-1:0];
VX_index_buffer #(
.DATAW (`NW_BITS + 32 + `NR_BITS + 1 + `LSU_BITS + (`NUM_THREADS * 2) + 1),
.DATAW (`NW_BITS + 32 + `NUM_THREADS + `NR_BITS + 1 + `LSU_BITS + (`NUM_THREADS * 2) + 1),
.SIZE (`LSUQ_SIZE)
) req_metadata (
.clk (clk),
@ -109,14 +110,20 @@ module VX_lsu_unit #(
.write_addr (mbuf_waddr),
.acquire_slot (mbuf_push),
.read_addr (mbuf_raddr),
.write_data ({req_wid, req_pc, req_rd, req_wb, req_type, req_offset, req_is_dup}),
.read_data ({rsp_wid, rsp_pc, rsp_rd, rsp_wb, rsp_type, rsp_offset, rsp_is_dup}),
.write_data ({req_wid, req_pc, req_tmask, req_rd, req_wb, req_type, req_offset, req_is_dup}),
.read_data ({rsp_wid, rsp_pc, rsp_tmask, rsp_rd, rsp_wb, rsp_type, rsp_offset, rsp_is_dup}),
.release_addr (mbuf_raddr),
.release_slot (mbuf_pop),
.full (mbuf_full),
`UNUSED_PIN (empty)
);
always @(posedge clk) begin
if (mbuf_push) begin
pending_tags[mbuf_waddr] <= req_tag;
end
end
assign sent_all_ready = (&(dcache_req_if.ready | req_sent_mask | ~req_tmask))
|| (req_is_dup & dcache_req_if.ready[0]);
@ -142,8 +149,7 @@ module VX_lsu_unit #(
assign rsp_rem_mask_n = rsp_rem_mask[mbuf_raddr] & ~dcache_rsp_if.valid;
always @(posedge clk) begin
if (mbuf_push) begin
rsp_rem_mask[mbuf_waddr] <= req_tmask;
pending_tags[mbuf_waddr] <= req_tag;
rsp_rem_mask[mbuf_waddr] <= req_is_dup ? (`NUM_THREADS)'(1) : req_tmask;
end
if (dcache_rsp_fire) begin
rsp_rem_mask[mbuf_raddr] <= rsp_rem_mask_n;
@ -215,7 +221,7 @@ module VX_lsu_unit #(
// load response formatting
reg [`NUM_THREADS-1:0][31:0] rsp_data;
wire [`NUM_THREADS-1:0] rsp_tmask;
wire [`NUM_THREADS-1:0] rsp_tmask_qual;
for (genvar i = 0; i < `NUM_THREADS; i++) begin
wire [31:0] src_data = (i == 0 || rsp_is_dup) ? dcache_rsp_if.data[0] : dcache_rsp_if.data[i];
@ -238,7 +244,7 @@ module VX_lsu_unit #(
end
end
assign rsp_tmask = rsp_is_dup ? rsp_rem_mask[mbuf_raddr] : dcache_rsp_if.valid;
assign rsp_tmask_qual = rsp_is_dup ? rsp_tmask : dcache_rsp_if.valid;
// send load commit
@ -251,7 +257,7 @@ module VX_lsu_unit #(
.clk (clk),
.reset (reset),
.enable (!load_rsp_stall),
.data_in ({(| dcache_rsp_if.valid), rsp_wid, rsp_tmask, rsp_pc, rsp_rd, rsp_wb, rsp_data, mbuf_pop}),
.data_in ({(| dcache_rsp_if.valid), rsp_wid, rsp_tmask_qual, rsp_pc, rsp_rd, rsp_wb, rsp_data, mbuf_pop}),
.data_out ({ld_commit_if.valid, ld_commit_if.wid, ld_commit_if.tmask, ld_commit_if.PC, ld_commit_if.rd, ld_commit_if.wb, ld_commit_if.data, ld_commit_if.eop})
);