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rtl: controller module deconstruction

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This commit is contained in:
otroubi
2026-07-07 17:32:13 +03:00
parent a6ade44b4d
commit 14a1df8bae
1 changed files with 37 additions and 90 deletions
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127
rtl/controller/src/controller.sv
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@ -1,17 +1,17 @@
module control #(
parameter int unsigned DAC_DATA_WIDTH = 12,
parameter int unsigned ADDR_W = 16
parameter int unsigned DATA_W = 32
parameter int unsigned USER_W = 1
parameter int unsigned DAC_DATA_WIDTH = 12
) (
input logic ctrl_clk,
input logic dac_clk_in,
input logic adc_clk_in,
input logic rst_n,
axi4l_if.slave s_axil,
input logic rst_soft,
// adc_clk_in domain
input logic finish,
input logic [127:0] cfg_bus,
input logic start,
// dac_clk_in domain outputs
output logic [31:0] dac_pulse_width,
@ -30,46 +30,6 @@ module control #(
output logic adc_rst
);
logic start, rst_soft;
logic [31:0] pulse_width, pulse_period, pulse_num, pulse_height_raw, pulse_period_ADC;
logic [7:0] busy, error_code;
logic [31:0] desc_read_addr, desc_read_len, desc_read_config, status_read;
logic [31:0] desc_write_addr, desc_write_len_and_tag, status_write_len, status_write_config;
axi4l_reg_map_controller #(
.ADDR_W(ADDR_W),
.DATA_W(DATA_W),
.USER_W(USER_W)
) axi4l_reg_map_controller_inst (
.clk(ctrl_clk),
.rst_n(rst_n),
.s_axil(s_axil),
.start_o(start),
.pulse_width_o(pulse_width),
.pulse_period_o(pulse_period),
.pulse_num_o(pulse_num),
.pulse_height_raw_o(pulse_height_raw),
.pulse_period_ADC_o(pulse_period_ADC),
.desc_read_addr_o(desc_read_addr),
.desc_read_len_o(desc_read_len),
.desc_read_config_o(desc_read_config),
.status_read_i(status_read),
.desc_write_addr_o(desc_write_addr),
.desc_write_len_and_tag_o(desc_write_len_and_tag),
.status_write_len_i(status_write_len),
.status_write_config_i(status_write_config),
.rst_soft_o(rst_soft),
.busy_i(busy),
.error_code_i(error_code)
);
// static checks
initial begin
if (DAC_DATA_WIDTH > 16) begin
@ -81,7 +41,7 @@ module control #(
end
// reset synchronizers: async assert, sync deassert in each domain
logic eth_rst_ff1, eth_rst_ff2;
logic rst_ff1, rst_ff2;
logic dac_rst_ff1, dac_rst_ff2;
logic adc_rst_ff1, adc_rst_ff2;
@ -91,11 +51,11 @@ module control #(
always_ff @(posedge ctrl_clk or negedge rst_n) begin
if (!rst_n) begin
eth_rst_ff1 <= 1'b1;
eth_rst_ff2 <= 1'b1;
rst_ff1 <= 1'b1;
rst_ff2 <= 1'b1;
end else begin
eth_rst_ff1 <= 1'b0;
eth_rst_ff2 <= eth_rst_ff1;
rst_ff1 <= 1'b0;
rst_ff2 <= rst_ff1;
end
end
@ -124,28 +84,15 @@ module control #(
assign adc_rst_int = adc_rst_ff2;
// -------------------------------------------------------------------------
// Field layout inside cfg_bus_eth:
// [31:0] pulse_width
// [63:32] pulse_period
// [79:64] pulse_num
// [95:80] pulse_height_raw[15:0]
// [127:96] pulse_period_ADC
//
// -------------------------------------------------------------------------
(* MARK_DEBUG="true" *) logic [127:0] cfg_bus_eth;
assign cfg_bus_eth = {pulse_period_ADC, pulse_height_raw[15:0], pulse_num[15:0], pulse_period, pulse_width};
// Event toggles cntrl -> DAC/ADC
logic start_toggle;
logic rst_toggle;
// Config request toggles cntrl -> DAC/ADC
logic cfg_req_toggle_dac;
logic cfg_req_toggle_adc;
// Event toggles ETH -> DAC/ADC
logic start_toggle_eth;
logic rst_toggle_eth;
// Config request toggles ETH -> DAC/ADC
logic cfg_req_toggle_dac_eth;
logic cfg_req_toggle_adc_eth;
// ACK toggles DAC/ADC -> ETH
// ACK toggles DAC/ADC -> contrl
logic cfg_ack_toggle_dac;
logic cfg_ack_toggle_adc;
@ -177,9 +124,9 @@ module control #(
// finish event: ADC -> ETH via toggle CDC
logic finish_toggle_adc;
logic finish_meta_eth, finish_sync_eth, finish_sync_eth_d;
logic finish_meta, finish_sync, finish_sync_d;
wire finish_pulse_eth = finish_sync_eth ^ finish_sync_eth_d;
wire finish_pulse = finish_sync ^ finish_sync_d;
always_ff @(posedge adc_clk_in or posedge adc_rst_int) begin
if (adc_rst_int) begin
@ -191,13 +138,13 @@ module control #(
always_ff @(posedge ctrl_clk or posedge ctrl_rst) begin
if (ctrl_rst) begin
finish_meta_eth <= 1'b0;
finish_sync_eth <= 1'b0;
finish_sync_eth_d <= 1'b0;
finish_meta <= 1'b0;
finish_sync <= 1'b0;
finish_sync_d <= 1'b0;
end else begin
finish_meta_eth <= finish_toggle_adc;
finish_sync_eth <= finish_meta_eth;
finish_sync_eth_d <= finish_sync_eth;
finish_meta <= finish_toggle_adc;
finish_sync <= finish_meta_eth;
finish_sync_d <= finish_sync_eth;
end
end
@ -223,11 +170,11 @@ module control #(
dac_start <= 1'b0;
dac_rst <= 1'b0;
end else begin
start_meta_dac <= start_toggle_eth;
start_meta_dac <= start_toggle;
start_sync_dac <= start_meta_dac;
start_sync_dac_d <= start_sync_dac;
rst_meta_dac <= rst_toggle_eth;
rst_meta_dac <= rst_toggle;
rst_sync_dac <= rst_meta_dac;
rst_sync_dac_d <= rst_sync_dac;
@ -258,11 +205,11 @@ module control #(
adc_start <= 1'b0;
adc_rst <= 1'b0;
end else begin
start_meta_adc <= start_toggle_eth;
start_meta_adc <= start_toggle;
start_sync_adc <= start_meta_adc;
start_sync_adc_d <= start_sync_adc;
rst_meta_adc <= rst_toggle_eth;
rst_meta_adc <= rst_toggle;
rst_sync_adc <= rst_meta_adc;
rst_sync_adc_d <= rst_sync_adc;
@ -271,8 +218,8 @@ module control #(
end
end
// ETH -> DAC config CDC
// cfg_bus_eth is kept stable in ETH domain until DAC and ADC both ACK.
// contrl -> DAC config CDC
// cfg_bus is kept stable in contrl domain until DAC and ADC both ACK.
(* ASYNC_REG = "TRUE" *) logic cfg_req_meta_dac, cfg_req_sync_dac;
logic cfg_req_sync_dac_d;
wire cfg_req_pulse_dac = cfg_req_sync_dac ^ cfg_req_sync_dac_d;
@ -294,10 +241,10 @@ module control #(
cfg_req_sync_dac_d <= cfg_req_sync_dac;
if (cfg_req_pulse_dac) begin
dac_pulse_width <= cfg_bus_eth[31:0];
dac_pulse_period <= cfg_bus_eth[63:32];
dac_pulse_num <= cfg_bus_eth[79:64];
dac_pulse_height <= cfg_bus_eth[80 +: DAC_DATA_WIDTH];
dac_pulse_width <= cfg_bus[31:0];
dac_pulse_period <= cfg_bus[63:32];
dac_pulse_num <= cfg_bus[79:64];
dac_pulse_height <= cfg_bus[80 +: DAC_DATA_WIDTH];
cfg_ack_toggle_dac <= ~cfg_ack_toggle_dac;
end
@ -323,8 +270,8 @@ module control #(
cfg_req_sync_adc_d <= cfg_req_sync_adc;
if (cfg_req_pulse_adc) begin
adc_pulse_period <= cfg_bus_eth[127:96];
adc_pulse_num <= cfg_bus_eth[79:64];
adc_pulse_period <= cfg_bus[127:96];
adc_pulse_num <= cfg_bus[79:64];
cfg_ack_toggle_adc <= ~cfg_ack_toggle_adc;
end