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minor update

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This commit is contained in:
Blaise Tine 2020-11-28 03:22:11 -05:00
parent 457f831435
commit 0c3d91ee6d
1 changed files with 12 additions and 11 deletions
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23
hw/rtl/cache/VX_tag_access.v vendored
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@ -93,15 +93,13 @@ module VX_tag_access #(
assign use_read_tag = DRAM_ENABLE ? qual_read_tag : addrtag; // Tag is always the same in SM
// use "case equality" to handle uninitialized tag when block entry is not valid
wire tags_match = use_read_valid && (addrtag === use_read_tag);
wire core_req_miss = valid_in && !is_snp_in && !is_fill_in
&& !tags_match;
wire tags_match = use_read_valid && (addrtag === use_read_tag);
assign use_do_write = valid_in
&& is_write_in
&& use_read_valid
&& !core_req_miss
assign use_do_write = valid_in
&& tags_match
&& !is_snp_in
&& !is_fill_in
&& is_write_in
&& !force_miss_in
&& !stall;
@ -110,13 +108,16 @@ module VX_tag_access #(
&& !stall;
assign use_invalidate = valid_in
&& is_snp_in
&& tags_match
&& tags_match
&& is_snp_in
&& (use_read_dirty || snp_invalidate_in)
&& !force_miss_in
&& !stall;
assign miss_out = core_req_miss;
assign miss_out = valid_in
&& !tags_match
&& !is_snp_in
&& !is_fill_in;
assign dirty_out = valid_in && use_read_valid && use_read_dirty
&& !(is_fill_in && tags_match); // discard writeback for redundant fills