Switched to dynamically allocated scoreboard

.devcontainer/devcontainer.json

@@ -0,0 +1,3 @@
+{
+    "image": "ghcr.io/pulp-platform/snitch_cluster:main"
+}

Bender.yml

@@ -255,6 +255,8 @@ sources:
       - hw/snitch_cluster/src/snitch_cluster_peripheral/snitch_cluster_peripheral_reg_top.sv
       - hw/snitch_cluster/src/snitch_cluster_peripheral/snitch_cluster_peripheral.sv
       - hw/snitch_cluster/src/snitch_fpu.sv
+      - hw/snitch_cluster/src/snitch_sb_ipool.sv
+      - hw/snitch_cluster/src/snitch_sb.sv
       - hw/snitch_cluster/src/snitch_sequencer.sv
       - hw/snitch_cluster/src/snitch_tcdm_interconnect.sv
       # Level 1

hw/snitch/src/snitch_pkg.sv

@@ -179,7 +179,8 @@ package snitch_pkg;
   typedef enum logic [1:0] {
     SrcSnitch =  0,
     SrcFpu = 1,
-    SrcFpuSeq = 2
+    SrcFpuSeq = 2,
+    SrcFpuSB = 3
   } trace_src_e;
 
   typedef struct packed {
@@ -284,6 +285,7 @@ package snitch_pkg;
     longint lsu_rd;
     longint acc_wb_ready;
     longint fpu_out_acc;
+    longint fpu_out_rd;
     longint fpr_waddr;
     longint fpr_wdata;
     longint fpr_we;
@@ -322,6 +324,7 @@ package snitch_pkg;
     extras_str = $sformatf("%s'%s': 0x%0x, ", extras_str, "lsu_rd", fpu_trace.lsu_rd);
     extras_str = $sformatf("%s'%s': 0x%0x, ", extras_str, "acc_wb_ready", fpu_trace.acc_wb_ready);
     extras_str = $sformatf("%s'%s': 0x%0x, ", extras_str, "fpu_out_acc", fpu_trace.fpu_out_acc);
+    extras_str = $sformatf("%s'%s': 0x%0x, ", extras_str, "fpu_out_rd", fpu_trace.fpu_out_rd);
     extras_str = $sformatf("%s'%s': 0x%0x, ", extras_str, "fpr_waddr", fpu_trace.fpr_waddr);
     extras_str = $sformatf("%s'%s': 0x%0x, ", extras_str, "fpr_wdata", fpu_trace.fpr_wdata);
     extras_str = $sformatf("%s'%s': 0x%0x, ", extras_str, "fpr_we", fpu_trace.fpr_we);
@@ -351,6 +354,33 @@ package snitch_pkg;
     extras_str = $sformatf("%s}", extras_str);
     return extras_str;
   endfunction
+
+  typedef struct packed {
+    longint source;
+    longint push_rd_addr_i;
+    longint push_valid_i;
+    longint entry_index_o;
+    longint pop_index_i;
+    longint pop_valid_i;
+    longint test_addr_i;
+    longint test_addr_present_o;
+    longint full_o;
+  } fpu_sb_trace_port_t;
   // pragma translate_on
 
+  function automatic string print_fpu_sb_trace(fpu_sb_trace_port_t fpu_sb);
+    string extras_str = "{";
+    extras_str = $sformatf("%s'%s': 0x%0x, ", extras_str, "source", fpu_sb.source);
+    extras_str = $sformatf("%s'%s': 0x%0x, ", extras_str, "push_rd_addr_i", fpu_sb.push_rd_addr_i);
+    extras_str = $sformatf("%s'%s': 0x%0x, ", extras_str, "push_valid_i", fpu_sb.push_valid_i);
+    extras_str = $sformatf("%s'%s': 0x%0x, ", extras_str, "entry_index_o", fpu_sb.entry_index_o);
+    extras_str = $sformatf("%s'%s': 0x%0x, ", extras_str, "pop_index_i", fpu_sb.pop_index_i);
+    extras_str = $sformatf("%s'%s': 0x%0x, ", extras_str, "pop_valid_i", fpu_sb.pop_valid_i);
+    extras_str = $sformatf("%s'%s': 0x%0x, ", extras_str, "test_addr_i", fpu_sb.test_addr_i);
+    extras_str = $sformatf("%s'%s': 0x%0x, ", extras_str, "test_addr_present_o", fpu_sb.test_addr_present_o);
+    extras_str = $sformatf("%s'%s': 0x%0x, ", extras_str, "full_o", fpu_sb.full_o);
+    extras_str = $sformatf("%s}", extras_str);
+    return extras_str;
+  endfunction
+
 endpackage

hw/snitch_cluster/src/snitch_cc.sv

@@ -435,6 +435,7 @@ module snitch_cc #(
   // pragma translate_off
   snitch_pkg::fpu_trace_port_t fpu_trace;
   snitch_pkg::fpu_sequencer_trace_port_t fpu_sequencer_trace;
+  snitch_pkg::fpu_sb_trace_port_t fpu_sb_trace;
   // pragma translate_on
 
   logic  [2:0][4:0] ssr_raddr;
@@ -489,6 +490,7 @@ module snitch_cc #(
       // pragma translate_off
       .trace_port_o            ( fpu_trace           ),
       .sequencer_tracer_port_o ( fpu_sequencer_trace ),
+      .sb_tracer_port_o        ( fpu_sb_trace        ),
       // pragma translate_on
       .hart_id_i        ( hart_id_i      ),
       .acc_req_i        ( acc_snitch_req ),
@@ -846,6 +848,7 @@ module snitch_cc #(
     automatic snitch_pkg::snitch_trace_port_t extras_snitch;
     automatic snitch_pkg::fpu_trace_port_t extras_fpu;
     automatic snitch_pkg::fpu_sequencer_trace_port_t extras_fpu_seq_out;
+    automatic snitch_pkg::fpu_sb_trace_port_t extras_fpu_sb_out;
 
     if (rst_ni) begin
       extras_snitch = '{
@@ -894,6 +897,7 @@ module snitch_cc #(
         if (Xfrep) begin
           // Addenda to FPU extras iff popping sequencer
           extras_fpu_seq_out = fpu_sequencer_trace;
+          extras_fpu_sb_out = fpu_sb_trace;
         end
       end
 
@@ -931,6 +935,14 @@ module snitch_cc #(
             $fwrite(f, trace_entry);
           end
         end
+
+        if (extras_fpu_sb_out.push_valid_i || extras_fpu_sb_out.pop_valid_i) begin
+          $sformat(trace_entry, "%t %1d %8d 0x%h DASM(%h) #; %s\n",
+              $time, cycle, i_snitch.priv_lvl_q, 32'hz, 64'hz,
+              snitch_pkg::print_fpu_sb_trace(extras_fpu_sb_out));
+          $fwrite(f, trace_entry);
+        end
+
       end
     end else begin
       cycle = '0;