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pipeline refactoring: centralized issue buffer

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This commit is contained in:
Blaise Tine
2020-07-26 11:21:08 -04:00
parent 1f63f9da25
commit 7c86b68977
62 changed files with 923 additions and 820 deletions
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14
hw/rtl/VX_csr_arb.v
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@@ -26,7 +26,8 @@ module VX_csr_arb (
`UNUSED_VAR (reset)
// requests
assign csr_req_if.valid = (~select_io_req) ? csr_core_req_if.valid : {`NUM_THREADS{csr_io_req_if.valid}};
assign csr_req_if.valid = (~select_io_req) ? csr_core_req_if.valid : csr_io_req_if.valid;
assign csr_req_if.issue_tag = (~select_io_req) ? csr_core_req_if.issue_tag : 0;
assign csr_req_if.warp_num = (~select_io_req) ? csr_core_req_if.warp_num : 0;
assign csr_req_if.curr_PC = (~select_io_req) ? csr_core_req_if.curr_PC : 0;
assign csr_req_if.csr_op = (~select_io_req) ? csr_core_req_if.csr_op : (csr_io_req_if.rw ? `CSR_RW : `CSR_RS);
@@ -40,15 +41,12 @@ module VX_csr_arb (
assign csr_io_req_if.ready = csr_req_if.ready && select_io_req;
// responses
assign csr_io_rsp_if.valid = csr_rsp_if.valid[0] & select_io_rsp;
assign csr_io_rsp_if.valid = csr_rsp_if.valid & select_io_rsp;
assign csr_io_rsp_if.data = csr_rsp_if.data[0];
assign csr_commit_if.valid = csr_rsp_if.valid & {`NUM_THREADS{~select_io_rsp}};
assign csr_commit_if.warp_num = csr_rsp_if.warp_num;
assign csr_commit_if.curr_PC = csr_rsp_if.curr_PC;
assign csr_commit_if.data = csr_rsp_if.data;
assign csr_commit_if.rd = csr_rsp_if.rd;
assign csr_commit_if.wb = csr_rsp_if.wb;
assign csr_commit_if.valid = csr_rsp_if.valid & ~select_io_rsp;
assign csr_commit_if.issue_tag= csr_rsp_if.issue_tag;
assign csr_commit_if.data = csr_rsp_if.data;
assign csr_rsp_if.ready = select_io_rsp ? csr_io_rsp_if.ready : csr_commit_if.ready;