sayma: initialize DACs over DRTIO

artiq/firmware/libboard_artiq/ad9154.rs

@@ -350,11 +350,11 @@ pub fn setup(dacno: u8, linerate: u64) -> Result<(), &'static str> {
             0x1*ad9154_reg::LINK_EN | 0*ad9154_reg::LINK_PAGE |
             0*ad9154_reg::LINK_MODE | 0*ad9154_reg::CHECKSUM_MODE);
     info!("  ...done");
+    status(dacno);
     Ok(())
 }
 
-#[allow(dead_code)]
-fn status(dacno: u8) {
+pub fn status(dacno: u8) {
     spi_setup(dacno);
     info!("SERDES_PLL_LOCK: {}",
         (read(ad9154_reg::PLL_STATUS) & ad9154_reg::SERDES_PLL_LOCK_RB));

artiq/firmware/libboard_artiq/jdcg.rs

@@ -6,31 +6,31 @@ pub fn jesd_reset(reset: bool) {
     }
 }
 
-fn jesd_enable(dacno: u8, en: bool) {
+pub fn jesd_enable(dacno: u8, en: bool) {
     unsafe {
         (csr::JDCG[dacno as usize].jesd_control_enable_write)(if en {1} else {0})
     }
 }
 
-fn jesd_ready(dacno: u8) -> bool {
+pub fn jesd_ready(dacno: u8) -> bool {
     unsafe {
         (csr::JDCG[dacno as usize].jesd_control_ready_read)() != 0
     }
 }
 
-fn jesd_prbs(dacno: u8, en: bool) {
+pub fn jesd_prbs(dacno: u8, en: bool) {
     unsafe {
         (csr::JDCG[dacno as usize].jesd_control_prbs_config_write)(if en {0b01} else {0b00})
     }
 }
 
-fn jesd_stpl(dacno: u8, en: bool) {
+pub fn jesd_stpl(dacno: u8, en: bool) {
     unsafe {
         (csr::JDCG[dacno as usize].jesd_control_stpl_enable_write)(if en {1} else {0})
     }
 }
 
-fn jesd_jsync(dacno: u8) -> bool {
+pub fn jesd_jsync(dacno: u8) -> bool {
     unsafe {
         (csr::JDCG[dacno as usize].jesd_control_jsync_read)() != 0
     }

artiq/firmware/libproto_artiq/drtioaux_proto.rs

@@ -53,6 +53,9 @@ pub enum Packet {
     SpiReadRequest { destination: u8, busno: u8 },
     SpiReadReply { succeeded: bool, data: u32 },
     SpiBasicReply { succeeded: bool },
+
+    JdacSetupRequest { destination: u8, dacno: u8 },
+    JdacBasicReply { succeeded: bool },
 }
 
 impl Packet {
@@ -178,6 +181,14 @@ impl Packet {
                 succeeded: reader.read_bool()?
             },
 
+            0xa0 => Packet::JdacSetupRequest {
+                destination: reader.read_u8()?,
+                dacno: reader.read_u8()?,
+            },
+            0xa1 => Packet::JdacBasicReply {
+                succeeded: reader.read_bool()?
+            },
+
             ty => return Err(Error::UnknownPacket(ty))
         })
     }
@@ -329,6 +340,16 @@ impl Packet {
                 writer.write_u8(0x95)?;
                 writer.write_bool(succeeded)?;
             },
+
+            Packet::JdacSetupRequest { destination, dacno } => {
+                writer.write_u8(0xa0)?;
+                writer.write_u8(destination)?;
+                writer.write_u8(dacno)?;
+            }
+            Packet::JdacBasicReply { succeeded } => {
+                writer.write_u8(0xa1)?;
+                writer.write_bool(succeeded)?;
+            },
         }
         Ok(())
     }

artiq/firmware/satman/main.rs

@@ -288,6 +288,22 @@ fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
             }
         }
 
+        drtioaux::Packet::JdacSetupRequest { destination: _destination, dacno: _dacno } => {
+            forward!(_routing_table, _destination, *_rank, _repeaters, &packet);
+            #[cfg(has_ad9154)]
+            let succeeded = {
+                #[cfg(rtio_frequency = "125.0")]
+                const LINERATE: u64 = 5_000_000_000;
+                #[cfg(rtio_frequency = "150.0")]
+                const LINERATE: u64 = 6_000_000_000;
+                board_artiq::ad9154::setup(_dacno, LINERATE).is_ok()
+            };
+            #[cfg(not(has_ad9154))]
+            let succeeded = false;
+            drtioaux::send(0,
+                &drtioaux::Packet::JdacBasicReply { succeeded: succeeded })
+        }
+
         _ => {
             warn!("received unexpected aux packet");
             Ok(())
@@ -400,6 +416,32 @@ const SI5324_SETTINGS: si5324::FrequencySettings
     crystal_ref: true
 };
 
+#[cfg(has_jdcg)]
+fn init_jdcgs() {
+    for dacno in 0..csr::JDCG.len() {
+        let dacno = dacno as u8;
+        info!("DAC-{} initializing...", dacno);
+        board_artiq::jdcg::jesd_enable(dacno, false);
+        board_artiq::jdcg::jesd_prbs(dacno, false);
+        board_artiq::jdcg::jesd_stpl(dacno, false);
+        clock::spin_us(10000);
+        board_artiq::jdcg::jesd_enable(dacno, true);
+        if let Err(e) = drtioaux::send(1, &drtioaux::Packet::JdacSetupRequest {
+            destination: 0,
+            dacno: dacno
+        }) {
+            error!("aux packet error ({})", e);
+        }
+        match drtioaux::recv_timeout(1, Some(1000)) {
+            Ok(drtioaux::Packet::JdacBasicReply { succeeded }) =>
+                if !succeeded { error!("DAC-{} initialization failed", dacno); },
+            Ok(packet) => error!("received unexpected aux packet: {:?}", packet),
+            Err(e) => error!("aux packet error ({})", e),
+        }
+        info!("  ...done");
+    }
+}
+
 #[no_mangle]
 pub extern fn main() -> i32 {
     clock::init();
@@ -473,19 +515,31 @@ pub extern fn main() -> i32 {
              * Si5324 is locked to the recovered clock.
              */
             board_artiq::jdcg::jesd_reset(false);
-            // TODO: board_artiq::ad9154::init();
+            if repeaters[0].is_up() {
+                init_jdcgs();
+            }
         }
 
         drtioaux::reset(0);
         drtiosat_reset(false);
         drtiosat_reset_phy(false);
 
+        #[cfg(has_jdcg)]
+        let mut rep0_was_up = repeaters[0].is_up();
         while drtiosat_link_rx_up() {
             drtiosat_process_errors();
             process_aux_packets(&mut repeaters, &mut routing_table, &mut rank);
             for mut rep in repeaters.iter_mut() {
                 rep.service(&routing_table, rank);
             }
+            #[cfg(has_jdcg)]
+            {
+                let rep0_is_up = repeaters[0].is_up();
+                if rep0_is_up && !rep0_was_up {
+                    init_jdcgs();
+                }
+                rep0_was_up = rep0_is_up;
+            }
             hardware_tick(&mut hardware_tick_ts);
             if drtiosat_tsc_loaded() {
                 info!("TSC loaded from uplink");

artiq/firmware/satman/repeater.rs

@@ -43,6 +43,10 @@ impl Repeater {
         }
     }
 
+    pub fn is_up(&self) -> bool {
+        self.state == RepeaterState::Up
+    }
+
     pub fn service(&mut self, routing_table: &drtio_routing::RoutingTable, rank: u8) {
         self.process_local_errors();