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adding missing files, buffering teh snoop forwarder

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This commit is contained in:
Blaise Tine
2020-12-09 00:24:32 -08:00
parent 0d595bae3c
commit 12f7fcfa75
8 changed files with 1628 additions and 16 deletions
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22
hw/rtl/cache/VX_snp_forwarder.v vendored
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@@ -138,12 +138,22 @@ module VX_snp_forwarder #(
end
reg [NUM_REQS-1:0] snp_fwdout_ready_other;
wire [NUM_REQS-1:0] fwdout_ready_unqual;
for (genvar i = 0; i < NUM_REQS; i++) begin
assign snp_fwdout_valid[i] = fwdout_valid && snp_fwdout_ready_other[i];
assign snp_fwdout_addr[i] = fwdout_addr;
assign snp_fwdout_inv[i] = fwdout_inv;
assign snp_fwdout_tag[i] = fwdout_tag;
VX_skid_buffer #(
.DATAW (DST_ADDR_WIDTH + 1 + TAG_OUT_WIDTH),
.PASSTHRU (NUM_REQS >= 4)
) fwdout_buffer (
.clk (clk),
.reset (reset),
.valid_in (fwdout_valid && snp_fwdout_ready_other[i]),
.data_in ({fwdout_addr, fwdout_inv, fwdout_tag}),
.ready_in (fwdout_ready_unqual[i]),
.valid_out (snp_fwdout_valid[i]),
.data_out ({snp_fwdout_addr[i], snp_fwdout_inv[i], snp_fwdout_tag[i]}),
.ready_out (snp_fwdout_ready[i])
);
end
always @(*) begin
@@ -151,12 +161,12 @@ module VX_snp_forwarder #(
for (integer i = 0; i < NUM_REQS; i++) begin
for (integer j = 0; j < NUM_REQS; j++) begin
if (i != j)
snp_fwdout_ready_other[i] &= snp_fwdout_ready[j];
snp_fwdout_ready_other[i] &= fwdout_ready_unqual[j];
end
end
end
assign fwdout_ready = (& snp_fwdout_ready);
assign fwdout_ready = (& fwdout_ready_unqual);
assign snp_req_ready = fwdout_ready && !sfq_full && !dispatch_hold;