Support multiple protocols with reg frontend

Co-authored-by: Thomas Benz <[email protected]>
pulp-platform · Aug 6, 2024 · 67c206e · 67c206e
1 parent a6b190c
commit 67c206e
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Showing 3 changed files with 16 additions and 1 deletion.
diff --git a/src/frontend/reg/tpl/idma_reg.hjson.tpl b/src/frontend/reg/tpl/idma_reg.hjson.tpl
@@ -53,6 +53,14 @@ ${params}
           name: "enable_nd",
           desc: "ND-extension enabled"
         }
+        { bits: "${src_prot_range}",
+          name: "src_protocol",
+          desc: "Selection of the source protocol"
+        }
+        { bits: "${dst_prot_range}",
+          name: "dst_protocol",
+          desc: "Selection of the destination protocol"
+        }
       ]
     },
     { multireg:

diff --git a/src/frontend/reg/tpl/idma_reg.sv.tpl b/src/frontend/reg/tpl/idma_reg.sv.tpl
@@ -113,6 +113,10 @@ module idma_${identifier} #(
       arb_dma_req[i]${sep}dst_addr = {dma_reg2hw[i].dst_addr_high.q, dma_reg2hw[i].dst_addr_low.q};
 % endif
 
+      // Protocols
+      arb_dma_req[i]${sep}src_protocol = idma_pkg::protocol_e'(dma_reg2hw[i].conf.src_protocol);
+      arb_dma_req[i]${sep}dst_protocol = idma_pkg::protocol_e'(dma_reg2hw[i].conf.dst_protocol);
+
       // Current backend only supports incremental burst
       arb_dma_req[i]${sep}opt.src.burst = axi_pkg::BURST_INCR;
       arb_dma_req[i]${sep}opt.dst.burst = axi_pkg::BURST_INCR;

diff --git a/util/mario/frontend.py b/util/mario/frontend.py
@@ -11,6 +11,7 @@
 import math
 from mako.template import Template
 
+NUM_PROT_BITS = 3 - 1
 
 def render_register(content: dict):
     """Render a register"""
@@ -129,7 +130,9 @@ def render_reg_hjson(fe_ids: dict, tpl_file: str) -> str:
             'identifier': fe_id,
             'params': params,
             'registers': regs,
-            'dim_range': f'{10+num_dim_bits}:10'
+            'dim_range': f'{10+num_dim_bits}:10',
+            'src_prot_range': f'{10+num_dim_bits+NUM_PROT_BITS}:{10+num_dim_bits}',
+            'dst_prot_range': f'{10+num_dim_bits+2*NUM_PROT_BITS}:{10+num_dim_bits+NUM_PROT_BITS}'
         }
 
         # render