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OBI: fix prot default value according to standard, and drive all parity signals

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Casamatta Yannick 2025-04-10 10:02:50 +02:00
parent a220a54942
commit a418a9fb0a
3 changed files with 7 additions and 5 deletions
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3
core/frontend/frontend.sv
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@ -556,7 +556,8 @@ module frontend
assign obi_fetch_req_o.a.a_optional.memtype[0] = '0;
assign obi_fetch_req_o.a.a_optional.memtype[1]= (!CVA6Cfg.MmuPresent && (obi_a_state_q == TRANSPARENT)) ? paddr_is_cacheable : paddr_is_cacheable_q;
assign obi_fetch_req_o.a.a_optional.mid = '0;
assign obi_fetch_req_o.a.a_optional.prot = '0;
assign obi_fetch_req_o.a.a_optional.prot[0] = '0;
assign obi_fetch_req_o.a.a_optional.prot[2:1] = 2'b11;
assign obi_fetch_req_o.a.a_optional.dbg = '0;
assign obi_fetch_req_o.a.a_optional.achk = '0;

2
core/load_unit.sv
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@ -332,7 +332,7 @@ module load_unit
assign obi_load_req_o.a.a_optional.memtype[0] = '0;
assign obi_load_req_o.a.a_optional.memtype[1]= (!CVA6Cfg.MmuPresent && (obi_a_state_q == TRANSPARENT)) ? paddr_is_cacheable : paddr_is_cacheable_q;
assign obi_load_req_o.a.a_optional.mid = '0;
assign obi_load_req_o.a.a_optional.prot[2:1] = '0;
assign obi_load_req_o.a.a_optional.prot[2:1] = 2'b11;
assign obi_load_req_o.a.a_optional.prot[0] = 1'b1; //data
assign obi_load_req_o.a.a_optional.dbg = '0;
assign obi_load_req_o.a.a_optional.achk = '0;

7
core/store_buffer.sv
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@ -158,13 +158,14 @@ module store_buffer
} //TO DO CHECK GRANULARITY
);
assign obi_store_req_o.a.a_optional.mid = '0;
assign obi_store_req_o.a.a_optional.prot[2:1] = '0;
assign obi_store_req_o.a.a_optional.prot[2:1] = 2'b11;
assign obi_store_req_o.a.a_optional.prot[0] = 1'b1; //data
assign obi_store_req_o.a.a_optional.dbg = '0;
assign obi_store_req_o.a.a_optional.achk = '0;
//TODO check parity : obi_store_rsp_i.gntpar != obi_store_rsp_i.gnt
assign obi_store_req_o.rready = '1; //always ready
assign obi_store_req_o.rreadypar = '0;
always_comb begin : store_if
automatic logic [$clog2(DEPTH_COMMIT):0] commit_status_cnt;
@ -180,7 +181,7 @@ module store_buffer
commit_queue_n = commit_queue_q;
obi_store_req_o.req = 1'b0;
obi_store_req_o.rready = 1'b1;
direct_req_from_speculative = 1'b0;
// there should be no commit when we are flushing