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new fpu implementation

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This commit is contained in:
Blaise Tine
2020-07-24 00:00:37 -04:00
parent f83521b7c6
commit 1f63f9da25
30 changed files with 318 additions and 258 deletions
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29
hw/rtl/VX_writeback.v
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@@ -10,7 +10,7 @@ module VX_writeback #(
VX_commit_if alu_commit_if,
VX_commit_if lsu_commit_if,
VX_commit_if mul_commit_if,
VX_commit_if fpu_commit_if,
VX_commit_fp_if fpu_commit_if,
VX_commit_if csr_commit_if,
// outputs
@@ -26,30 +26,39 @@ module VX_writeback #(
VX_wb_if writeback_tmp_if();
assign writeback_tmp_if.valid = lsu_valid ? lsu_commit_if.valid :
fpu_valid ? fpu_commit_if.valid :
mul_valid ? mul_commit_if.valid :
alu_valid ? alu_commit_if.valid :
csr_valid ? csr_commit_if.valid :
0;
assign writeback_tmp_if.warp_num = lsu_valid ? lsu_commit_if.warp_num :
fpu_valid ? fpu_commit_if.warp_num :
mul_valid ? mul_commit_if.warp_num :
alu_valid ? alu_commit_if.warp_num :
csr_valid ? csr_commit_if.warp_num :
0;
assign writeback_tmp_if.data = lsu_valid ? lsu_commit_if.data :
mul_valid ? mul_commit_if.data :
alu_valid ? alu_commit_if.data :
csr_valid ? csr_commit_if.data :
0;
assign writeback_tmp_if.rd = lsu_valid ? lsu_commit_if.rd :
fpu_valid ? fpu_commit_if.rd :
mul_valid ? mul_commit_if.rd :
alu_valid ? alu_commit_if.rd :
csr_valid ? csr_commit_if.rd :
0;
assign writeback_tmp_if.is_fp = fpu_valid && fpu_commit_if.ready;
assign writeback_tmp_if.rd_is_fp = lsu_valid ? 0 :
fpu_valid ? fpu_commit_if.rd_is_fp :
mul_valid ? 0 :
alu_valid ? 0 :
csr_valid ? 0 :
0;
assign writeback_tmp_if.data = lsu_valid ? lsu_commit_if.data :
fpu_valid ? fpu_commit_if.data :
mul_valid ? mul_commit_if.data :
alu_valid ? alu_commit_if.data :
csr_valid ? csr_commit_if.data :
0;
wire stall = ~writeback_if.ready && (| writeback_if.valid);
@@ -60,8 +69,8 @@ module VX_writeback #(
.reset (reset),
.stall (stall),
.flush (0),
.in ({writeback_tmp_if.valid, writeback_tmp_if.warp_num, writeback_tmp_if.rd, writeback_tmp_if.data, writeback_tmp_if.is_fp}),
.out ({writeback_if.valid, writeback_if.warp_num, writeback_if.rd, writeback_if.data, writeback_if.is_fp})
.in ({writeback_tmp_if.valid, writeback_tmp_if.warp_num, writeback_tmp_if.rd, writeback_tmp_if.rd_is_fp, writeback_tmp_if.data}),
.out ({writeback_if.valid, writeback_if.warp_num, writeback_if.rd, writeback_if.rd_is_fp, writeback_if.data})
);
assign lsu_commit_if.ready = !stall;