wire up arbitration lost signal

Author: kgugala

src/ctrl/ccc.sv

@@ -91,6 +91,7 @@ module ccc
     input logic rst_ni, // Async reset, active low
     input logic [47:0] id_i,
 
+    input logic arbitration_lost_i,
     // CC is decoded from the frame by the primary FSM
     input logic [7:0] ccc_i,
     // Assert valid when you want to give control to this FSM

src/ctrl/controller.sv

@@ -70,6 +70,7 @@ module controller
     output logic scl_o,
     output logic sda_o,
     output logic sel_od_pp_o,
+    input logic arbitration_lost_i,
 
     // HCI queues
     // Command FIFO
@@ -459,6 +460,7 @@ module controller
       .ctrl_scl_o(ctrl_scl_o[2:3]),
       .ctrl_sda_o(ctrl_sda_o[2:3]),
       .phy_sel_od_pp_o(ctrl_sel_od_pp_i[2:3]),
+      .arbitration_lost_i(arbitration_lost_i),
       .rx_desc_queue_full_i(tti_rx_desc_queue_full_i),
       .rx_desc_queue_depth_i(tti_rx_desc_queue_depth_i),
       .rx_desc_queue_ready_thld_i(tti_rx_desc_queue_ready_thld_i),

src/ctrl/controller_standby.sv

@@ -37,6 +37,7 @@ module controller_standby
     output logic ctrl_scl_o[2],
     output logic ctrl_sda_o[2],
     output logic phy_sel_od_pp_o[2],
+    input logic arbitration_lost_i,
 
     // Target Transaction Interface
 
@@ -385,6 +386,7 @@ module controller_standby
       .ctrl_bus_i(ctrl_bus_i[1]),
       .ctrl_scl_o(ctrl_scl_o[1]),
       .ctrl_sda_o(ctrl_sda_o[1]),
+      .arbitration_lost_i(arbitration_lost_i),
       .phy_sel_od_pp_o(phy_sel_od_pp_o[1]),
       .rx_desc_queue_wvalid_o(i3c_rx_desc_queue_wvalid_o),
       .rx_desc_queue_wdata_o(i3c_rx_desc_queue_wdata_o),

src/ctrl/controller_standby_i3c.sv

@@ -23,6 +23,7 @@ module controller_standby_i3c
     output logic ctrl_scl_o,
     output logic ctrl_sda_o,
     output logic phy_sel_od_pp_o,
+    input logic arbitration_lost_i,
 
     // Target Transaction Interface
 
@@ -468,6 +469,7 @@ module controller_standby_i3c
       .clk_i,
       .rst_ni,
       .id_i,
+      .arbitration_lost_i,
       .ccc_i                     (ccc),
       .ccc_valid_i               (ccc_valid),
       .done_fsm_o                (is_ccc_done),

src/i3c.sv

@@ -539,6 +539,9 @@ module i3c
   logic virtual_device_sel;
   logic xfer_in_progress;
 
+  logic arbitration_lost;
+
+  assign arbitration_lost = sda_i != sda_o;
 
   // HCI
   I3CCSR_pkg::I3CCSR__I3C_EC__TTI__out_t             hwif_tti_out;
@@ -566,6 +569,7 @@ module i3c
       .scl_o(ctrl2phy_scl),
       .sda_o(ctrl2phy_sda),
       .sel_od_pp_o(ctrl_sel_od_pp),
+      .arbitration_lost_i(arbitration_lost),
 
       // HCI Response queue
       .hci_resp_queue_empty_i(hci_resp_empty),