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[SC64][FW][SW] Slightly speed up DMA write transfer speed + USB speed test fixes

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This commit is contained in:
Mateusz Faderewski 2024-07-21 22:15:06 +02:00
parent 912f356650
commit e9ee025e21
3 changed files with 31 additions and 43 deletions
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39
fw/rtl/memory/memory_dma.sv
View File

@ -178,9 +178,8 @@ module memory_dma (
// RX FIFO controller
typedef enum bit [2:0] {
typedef enum bit [1:0] {
RX_FIFO_BUS_STATE_IDLE,
RX_FIFO_BUS_STATE_WAIT,
RX_FIFO_BUS_STATE_TRANSFER_1,
RX_FIFO_BUS_STATE_TRANSFER_2,
RX_FIFO_BUS_STATE_ACK
@ -191,7 +190,6 @@ module memory_dma (
logic rx_fifo_shift;
logic rx_fifo_shift_delayed;
logic [1:0] rx_fifo_valid;
always_ff @(posedge clk) begin
if (reset || dma_stop) begin
@ -211,29 +209,24 @@ module memory_dma (
case (rx_fifo_bus_state)
RX_FIFO_BUS_STATE_IDLE: begin
if (dma_start && dma_scb.direction) begin
next_rx_fifo_bus_state = RX_FIFO_BUS_STATE_WAIT;
end
end
RX_FIFO_BUS_STATE_WAIT: begin
if (mem_bus_wdata_end) begin
next_rx_fifo_bus_state = RX_FIFO_BUS_STATE_IDLE;
end else if (mem_bus_wdata_empty) begin
next_rx_fifo_bus_state = RX_FIFO_BUS_STATE_TRANSFER_1;
end
end
RX_FIFO_BUS_STATE_TRANSFER_1: begin
fifo_bus.rx_read = (!fifo_bus.rx_empty && rx_fifo_valid[1]);
if (!fifo_bus.rx_empty || !rx_fifo_valid[1]) begin
fifo_bus.rx_read = (!fifo_bus.rx_empty && mem_bus_wdata_empty && mem_bus_wdata_valid[1] && !mem_bus_wdata_end);
if ((!fifo_bus.rx_empty && mem_bus_wdata_empty) || !mem_bus_wdata_valid[1]) begin
next_rx_fifo_bus_state = RX_FIFO_BUS_STATE_TRANSFER_2;
rx_fifo_shift = 1'b1;
end
if (mem_bus_wdata_end) begin
next_rx_fifo_bus_state = RX_FIFO_BUS_STATE_IDLE;
end
end
RX_FIFO_BUS_STATE_TRANSFER_2: begin
fifo_bus.rx_read = (!fifo_bus.rx_empty && rx_fifo_valid[1]);
if (!fifo_bus.rx_empty || !rx_fifo_valid[1]) begin
fifo_bus.rx_read = (!fifo_bus.rx_empty && mem_bus_wdata_valid[0]);
if (!fifo_bus.rx_empty || !mem_bus_wdata_valid[0]) begin
next_rx_fifo_bus_state = RX_FIFO_BUS_STATE_ACK;
rx_fifo_shift = 1'b1;
end
@ -241,7 +234,7 @@ module memory_dma (
RX_FIFO_BUS_STATE_ACK: begin
if (mem_bus_wdata_ready) begin
next_rx_fifo_bus_state = RX_FIFO_BUS_STATE_WAIT;
next_rx_fifo_bus_state = RX_FIFO_BUS_STATE_TRANSFER_1;
end
end
@ -255,26 +248,12 @@ module memory_dma (
mem_bus_wdata_ready <= 1'b0;
rx_fifo_shift_delayed <= rx_fifo_shift;
if (rx_fifo_shift) begin
rx_fifo_valid <= {rx_fifo_valid[0], 1'bX};
end
if (rx_fifo_shift_delayed) begin
if (rx_fifo_bus_state == RX_FIFO_BUS_STATE_ACK) begin
mem_bus_wdata_ready <= 1'b1;
end
mem_bus_wdata_buffer <= {mem_bus_wdata_buffer[7:0], fifo_bus.rx_rdata};
end
case (rx_fifo_bus_state)
RX_FIFO_BUS_STATE_WAIT: begin
if (mem_bus_wdata_empty) begin
rx_fifo_valid <= mem_bus_wdata_valid;
end
end
default: begin end
endcase
end

15
sw/deployer/src/main.rs
View File

@ -892,12 +892,19 @@ fn handle_test_command(connection: Connection) -> Result<(), sc64::Error> {
println!("{}: USB", "[SC64 Tests]".bold());
print!(" Performing USB speed test... ");
print!(" Performing USB write speed test... ");
stdout().flush().unwrap();
println!(
"{}",
format!("{:.2} MiB/s", sc64.test_usb_speed(true)?).bright_green()
);
let (read_speed, write_speed) = sc64.test_usb_speed()?;
println!("Read speed: {read_speed:.2} MiB/s, Write speed: {write_speed:.2} MiB/s");
print!(" Performing USB read speed test... ");
stdout().flush().unwrap();
println!(
"{}",
format!("{:.2} MiB/s", sc64.test_usb_speed(false)?).bright_green()
);
println!("{}: SDRAM (pattern)", "[SC64 Tests]".bold());

18
sw/deployer/src/sc64/mod.rs
View File

@ -752,20 +752,22 @@ impl SC64 {
}
}
pub fn test_usb_speed(&mut self) -> Result<(f64, f64), Error> {
pub fn test_usb_speed(&mut self, write: bool) -> Result<f64, Error> {
const TEST_ADDRESS: u32 = SDRAM_ADDRESS;
const TEST_LENGTH: usize = SDRAM_LENGTH;
const TEST_LENGTH: usize = 8 * 1024 * 1024;
const MIB_DIVIDER: f64 = 1024.0 * 1024.0;
let read_time = std::time::Instant::now();
let data = self.command_memory_read(TEST_ADDRESS, TEST_LENGTH)?;
let read_speed = (TEST_LENGTH as f64 / MIB_DIVIDER) / read_time.elapsed().as_secs_f64();
let data = vec![0x00; TEST_LENGTH];
let write_time = std::time::Instant::now();
let time = std::time::Instant::now();
if write {
self.command_memory_write(TEST_ADDRESS, &data)?;
let write_speed = (TEST_LENGTH as f64 / MIB_DIVIDER) / write_time.elapsed().as_secs_f64();
} else {
self.command_memory_read(TEST_ADDRESS, TEST_LENGTH)?;
}
Ok((read_speed, write_speed))
Ok((TEST_LENGTH as f64 / MIB_DIVIDER) / time.elapsed().as_secs_f64())
}
pub fn test_sdram_pattern(