M-Labs/artiq-zynq
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runtime: extract rtio_clocking, new config support

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This commit is contained in:
mwojcik 2021-10-22 17:43:36 +08:00
parent 4218354e65
commit 7db80ef42b
2 changed files with 126 additions and 81 deletions
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84
src/runtime/src/main.rs
View File

@ -18,12 +18,9 @@ use libasync::{task, block_async};
use libsupport_zynq::ram;
use nb;
use void::Void;
use embedded_hal::blocking::delay::DelayMs;
use libconfig::Config;
use libcortex_a9::l2c::enable_l2_cache;
use libboard_artiq::{logger, identifier_read, init_gateware, pl};
#[cfg(has_si5324)]
use libboard_artiq::si5324;
mod proto_async;
mod comms;
@ -35,6 +32,7 @@ mod rtio;
#[path = "rtio_acp.rs"]
mod rtio;
mod rtio_mgt;
mod rtio_clocking;
mod kernel;
mod moninj;
mod eh_artiq;
@ -44,65 +42,6 @@ mod analyzer;
mod irq;
mod i2c;
fn init_rtio(timer: &mut GlobalTimer, _cfg: &Config) {
#[cfg(has_rtio_crg_clock_sel)]
let clock_sel =
if let Ok(rtioclk) = _cfg.read_str("rtioclk") {
match rtioclk.as_ref() {
"internal" => {
info!("using internal RTIO clock");
0
},
"external" => {
info!("using external RTIO clock");
1
},
other => {
warn!("RTIO clock specification '{}' not recognized", other);
info!("using internal RTIO clock");
0
},
}
} else {
info!("using internal RTIO clock (default)");
0
};
loop {
unsafe {
pl::csr::rtio_crg::pll_reset_write(1);
#[cfg(has_rtio_crg_clock_sel)]
pl::csr::rtio_crg::clock_sel_write(clock_sel);
pl::csr::rtio_crg::pll_reset_write(0);
}
timer.delay_ms(1);
let locked = unsafe { pl::csr::rtio_crg::pll_locked_read() != 0 };
if locked {
info!("RTIO PLL locked");
break;
} else {
warn!("RTIO PLL failed to lock, retrying...");
timer.delay_ms(500);
}
}
unsafe {
pl::csr::rtio_core::reset_phy_write(1);
}
}
#[cfg(has_drtio)]
fn init_drtio(timer: &mut GlobalTimer)
{
unsafe {
pl::csr::drtio_transceiver::stable_clkin_write(1);
}
timer.delay_ms(2); // wait for CPLL/QPLL lock
unsafe {
pl::csr::drtio_transceiver::txenable_write(0xffffffffu32 as _);
}
}
fn wait_for_async_rtio_error() -> nb::Result<(), Void> {
unsafe {
@ -136,19 +75,7 @@ async fn report_async_rtio_errors() {
}
}
#[cfg(has_si5324)]
// 125MHz output, from crystal, 7 Hz
const SI5324_SETTINGS: si5324::FrequencySettings
= si5324::FrequencySettings {
n1_hs : 10,
nc1_ls : 4,
n2_hs : 10,
n2_ls : 19972,
n31 : 4565,
n32 : 4565,
bwsel : 4,
crystal_ref: true
};
static mut LOG_BUFFER: [u8; 1<<17] = [0; 1<<17];
@ -173,9 +100,6 @@ pub fn main_core0() {
info!("detected gateware: {}", identifier_read(&mut [0; 64]));
i2c::init();
#[cfg(has_si5324)]
si5324::setup(unsafe { (&mut i2c::I2C_BUS).as_mut().unwrap() },
&SI5324_SETTINGS, si5324::Input::Ckin2, &mut timer).expect("cannot initialize Si5324");
let cfg = match Config::new() {
Ok(cfg) => cfg,
@ -185,10 +109,8 @@ pub fn main_core0() {
}
};
#[cfg(has_drtio)]
init_drtio(&mut timer);
rtio_clocking::init(&mut timer, &cfg);
init_rtio(&mut timer, &cfg);
task::spawn(report_async_rtio_errors());
comms::main(timer, cfg);

123
src/runtime/src/rtio_clocking.rs Normal file
View File

@ -0,0 +1,123 @@
use log::{info, warn};
use libboard_zynq::{timer::GlobalTimer};
use embedded_hal::blocking::delay::DelayMs;
use libconfig::Config;
use libboard_artiq::pl;
use crate::i2c;
#[cfg(has_si5324)]
use libboard_artiq::si5324;
#[derive(Debug, PartialEq, Copy, Clone)]
#[allow(non_camel_case_types)]
pub enum RtioClock {
Int_125,
Int_100,
Int_150,
Ext0_Bypass,
Ext0_Synth0_10to125,
Ext0_Synth0_100to125,
Ext0_Synth0_125to125,
}
fn get_rtio_clock_cfg(cfg: &Config) -> RtioClock {
if let Ok(clk) = cfg.read_str("rtio_clock") {
match clk.as_ref() {
"int_125" => RtioClock::Int_125,
"int_100" => RtioClock::Int_100,
"int_150" => RtioClock::Int_150,
"ext0_bypass" => RtioClock::Ext0_Bypass,
"ext0_synth0_10to125" => RtioClock::Ext0_Synth0_10to125,
"ext0_synth0_100to125" => RtioClock::Ext0_Synth0_100to125,
"ext0_synth0_125to125" => RtioClock::Ext0_Synth0_125to125,
_ => RtioClock::Int_125
}
}
else {
RtioClock::Int_125
}
}
fn init_rtio(timer: &mut GlobalTimer, _clk: RtioClock) {
#[cfg(has_rtio_crg_clock_sel)]
let clock_sel = match _clk {
RtioClock::Ext0_Bypass => {
info!("using bypassed external clock");
1
},
x => {
info!("using clock: {:?}", x);
0
}
};
loop {
unsafe {
pl::csr::rtio_crg::pll_reset_write(1);
#[cfg(has_rtio_crg_clock_sel)]
pl::csr::rtio_crg::clock_sel_write(clock_sel);
pl::csr::rtio_crg::pll_reset_write(0);
}
timer.delay_ms(1);
let locked = unsafe { pl::csr::rtio_crg::pll_locked_read() != 0 };
if locked {
info!("RTIO PLL locked");
break;
} else {
warn!("RTIO PLL failed to lock, retrying...");
timer.delay_ms(500);
}
}
unsafe {
pl::csr::rtio_core::reset_phy_write(1);
}
}
#[cfg(has_drtio)]
fn init_drtio(timer: &mut GlobalTimer)
{
unsafe {
pl::csr::drtio_transceiver::stable_clkin_write(1);
}
timer.delay_ms(2); // wait for CPLL/QPLL lock
unsafe {
pl::csr::drtio_transceiver::txenable_write(0xffffffffu32 as _);
}
}
#[cfg(has_si5324)]
fn setup_si5324(timer: &mut GlobalTimer, clk: RtioClock) {
let mut si5324_settings: Option<si5324::FrequencySettings> = None;
// 125MHz output, from crystal, 7 Hz
if si5324_settings.is_none() || clk == RtioClock::Int_125 {
info!("using internal 125MHz RTIO clock");
si5324_settings = Some(si5324::FrequencySettings {
n1_hs : 10,
nc1_ls : 4,
n2_hs : 10,
n2_ls : 19972,
n31 : 4565,
n32 : 4565,
bwsel : 4,
crystal_ref: true
});
}
si5324::setup(unsafe { (&mut i2c::I2C_BUS).as_mut().unwrap() },
&si5324_settings.unwrap(), si5324::Input::Ckin2, timer).expect("cannot initialize Si5324");
}
pub fn init(timer: &mut GlobalTimer, cfg: &Config) {
let clk = get_rtio_clock_cfg(cfg);
#[cfg(has_si5324)]
setup_si5324(timer, clk);
#[cfg(has_drtio)]
init_drtio(timer);
init_rtio(timer, clk);
}