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Added dram_fill_req_fast which is used to stall bank pipeline

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felsabbagh3
2020-06-28 15:22:36 -07:00
parent 3d9a8dbf83
commit 567376971e
1 changed files with 4 additions and 4 deletions
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8
hw/rtl/cache/VX_bank.v vendored
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@@ -644,10 +644,10 @@ module VX_bank #(
assign core_rsp_valid = !cwbq_empty;
// Enqueue DRAM fill request
wire dram_fill_req_unqual = miss_add_unqual
wire dram_fill_req_fast = miss_add_unqual; // Completely unqualified hint that we might send a dram_fill_req
wire dram_fill_req_unqual = dram_fill_req_fast
&& (!mrvq_init_ready_state_st2
|| (is_mrvq_st2 && !mrvq_recover_ready_state_st2));
|| (is_mrvq_st2 && !mrvq_recover_ready_state_st2)); // If this is set, then we are sure we will be sending a dram_fill_req
assign dram_fill_req_valid = dram_fill_req_unqual
&& !(dwbq_push_stall
@@ -655,7 +655,7 @@ module VX_bank #(
|| cwbq_push_stall);
assign dram_fill_req_addr = addr_st2;
assign dram_fill_req_stall = dram_fill_req_unqual && !dram_fill_req_ready;
assign dram_fill_req_stall = dram_fill_req_fast && !dram_fill_req_ready; // Uses dram_fill_req_fast for critical path
// Enqueue DRAM writeback request