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firmware: implement DRTIO destination survey

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This commit is contained in:
Sebastien Bourdeauducq 2018-09-13 12:00:29 +08:00
parent 6cf3db3485
commit fa872c3341
5 changed files with 175 additions and 78 deletions
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15
artiq/firmware/libboard_artiq/drtioaux.rs
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@ -10,14 +10,21 @@ pub use proto_artiq::drtioaux_proto::Packet;
// this is parametric over T because there's no impl Fail for !.
#[derive(Fail, Debug)]
pub enum Error<T> {
#[fail(display = "packet CRC failed")]
CorruptedPacket,
#[fail(display = "timed out waiting for data")]
TimedOut,
#[fail(display = "invalid node number")]
NoRoute,
#[fail(display = "gateware reported error")]
GatewareError,
#[fail(display = "packet CRC failed")]
CorruptedPacket,
#[fail(display = "link is down")]
LinkDown,
#[fail(display = "timed out waiting for data")]
TimedOut,
#[fail(display = "unexpected reply")]
UnexpectedReply,
#[fail(display = "protocol error: {}", _0)]
Protocol(#[cause] ProtocolError<T>)
}

46
artiq/firmware/libproto_artiq/drtioaux_proto.rs
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@ -22,11 +22,12 @@ pub enum Packet {
ResetAck,
TSCAck,
RtioErrorRequest,
RtioNoErrorReply,
RtioErrorSequenceErrorReply { channel: u16 },
RtioErrorCollisionReply { channel: u16 },
RtioErrorBusyReply { channel: u16 },
DestinationStatusRequest { destination: u8 },
DestinationDownReply,
DestinationOkReply,
DestinationSequenceErrorReply { channel: u16 },
DestinationCollisionReply { channel: u16 },
DestinationBusyReply { channel: u16 },
RoutingSetPath { destination: u8, hops: [u8; 32] },
RoutingSetRank { rank: u8 },
@ -67,15 +68,18 @@ impl Packet {
0x03 => Packet::ResetAck,
0x04 => Packet::TSCAck,
0x20 => Packet::RtioErrorRequest,
0x21 => Packet::RtioNoErrorReply,
0x22 => Packet::RtioErrorSequenceErrorReply {
0x20 => Packet::DestinationStatusRequest {
destination: reader.read_u8()?
},
0x21 => Packet::DestinationDownReply,
0x22 => Packet::DestinationOkReply,
0x23 => Packet::DestinationSequenceErrorReply {
channel: reader.read_u16()?
},
0x23 => Packet::RtioErrorCollisionReply {
0x24 => Packet::DestinationCollisionReply {
channel: reader.read_u16()?
},
0x24 => Packet::RtioErrorBusyReply {
0x25 => Packet::DestinationBusyReply {
channel: reader.read_u16()?
},
@ -186,22 +190,26 @@ impl Packet {
Packet::TSCAck =>
writer.write_u8(0x04)?,
Packet::RtioErrorRequest =>
writer.write_u8(0x20)?,
Packet::RtioNoErrorReply =>
writer.write_u8(0x21)?,
Packet::RtioErrorSequenceErrorReply { channel } => {
writer.write_u8(0x22)?;
writer.write_u16(channel)?;
Packet::DestinationStatusRequest {destination } => {
writer.write_u8(0x20)?;
writer.write_u8(destination)?;
},
Packet::RtioErrorCollisionReply { channel } => {
Packet::DestinationDownReply =>
writer.write_u8(0x21)?,
Packet::DestinationOkReply =>
writer.write_u8(0x22)?,
Packet::DestinationSequenceErrorReply { channel } => {
writer.write_u8(0x23)?;
writer.write_u16(channel)?;
},
Packet::RtioErrorBusyReply { channel } => {
Packet::DestinationCollisionReply { channel } => {
writer.write_u8(0x24)?;
writer.write_u16(channel)?;
},
Packet::DestinationBusyReply { channel } => {
writer.write_u8(0x25)?;
writer.write_u16(channel)?;
},
Packet::RoutingSetPath { destination, hops } => {
writer.write_u8(0x30)?;

67
artiq/firmware/runtime/rtio_mgt.rs
View File

@ -201,22 +201,63 @@ pub mod drtio {
}
}
fn process_aux_errors(io: &Io, linkno: u8) {
drtioaux::send_link(linkno, &drtioaux::Packet::RtioErrorRequest).unwrap();
match recv_aux_timeout(io, linkno, 200) {
Ok(drtioaux::Packet::RtioNoErrorReply) => (),
Ok(drtioaux::Packet::RtioErrorSequenceErrorReply { channel }) =>
error!("[LINK#{}] RTIO sequence error involving channel {}", linkno, channel),
Ok(drtioaux::Packet::RtioErrorCollisionReply { channel }) =>
error!("[LINK#{}] RTIO collision involving channel {}", linkno, channel),
Ok(drtioaux::Packet::RtioErrorBusyReply { channel }) =>
error!("[LINK#{}] RTIO busy error involving channel {}", linkno, channel),
Ok(_) => error!("[LINK#{}] received unexpected aux packet", linkno),
Err(e) => error!("[LINK#{}] communication failed ({})", linkno, e)
fn destination_survey(io: &Io, routing_table: &drtio_routing::RoutingTable,
up_destinations: &mut [bool; drtio_routing::DEST_COUNT]) {
for destination in 0..drtio_routing::DEST_COUNT {
let hop = routing_table.0[destination][0];
if hop == 0 {
/* local RTIO */
up_destinations[destination] = true;
} else if hop as usize <= csr::DRTIO.len() {
let linkno = hop - 1;
if up_destinations[destination] {
if link_up(linkno) {
drtioaux::send_link(linkno, &drtioaux::Packet::DestinationStatusRequest {
destination: destination as u8
}).unwrap();
match recv_aux_timeout(io, linkno, 200) {
Ok(drtioaux::Packet::DestinationDownReply) => {
info!("[DEST#{}] destination is down", destination);
up_destinations[destination] = false;
},
Ok(drtioaux::Packet::DestinationOkReply) => (),
Ok(drtioaux::Packet::DestinationSequenceErrorReply { channel }) =>
error!("[DEST#{}] RTIO sequence error involving channel 0x{:04x}", destination, channel),
Ok(drtioaux::Packet::DestinationCollisionReply { channel }) =>
error!("[DEST#{}] RTIO collision involving channel 0x{:04x}", destination, channel),
Ok(drtioaux::Packet::DestinationBusyReply { channel }) =>
error!("[DEST#{}] RTIO busy error involving channel 0x{:04x}", destination, channel),
Ok(packet) => error!("[DEST#{}] received unexpected aux packet: {:?}", destination, packet),
Err(e) => error!("[DEST#{}] communication failed ({})", destination, e)
}
} else {
info!("[DEST#{}] destination is down", destination);
up_destinations[destination] = false;
}
} else {
if link_up(linkno) {
drtioaux::send_link(linkno, &drtioaux::Packet::DestinationStatusRequest {
destination: destination as u8
}).unwrap();
match recv_aux_timeout(io, linkno, 200) {
Ok(drtioaux::Packet::DestinationDownReply) => (),
Ok(drtioaux::Packet::DestinationOkReply) => {
info!("[DEST#{}] destination is up", destination);
up_destinations[destination] = true;
/* TODO: get buffer space */
},
Ok(packet) => error!("[DEST#{}] received unexpected aux packet: {:?}", destination, packet),
Err(e) => error!("[DEST#{}] communication failed ({})", destination, e)
}
}
}
}
}
}
pub fn link_thread(io: Io, routing_table: &drtio_routing::RoutingTable) {
let mut up_destinations = [false; drtio_routing::DEST_COUNT];
loop {
for linkno in 0..csr::DRTIO.len() {
let linkno = linkno as u8;
@ -225,7 +266,6 @@ pub mod drtio {
if link_rx_up(linkno) {
process_unsolicited_aux(linkno);
process_local_errors(linkno);
process_aux_errors(&io, linkno);
} else {
info!("[LINK#{}] link is down", linkno);
set_link_up(linkno, false);
@ -255,6 +295,7 @@ pub mod drtio {
}
}
}
destination_survey(&io, routing_table, &mut up_destinations);
io.sleep(200).unwrap();
}
}

89
artiq/firmware/satman/main.rs
View File

@ -71,39 +71,70 @@ fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
drtioaux::send_link(0, &drtioaux::Packet::ResetAck)
},
drtioaux::Packet::RtioErrorRequest => {
let errors;
unsafe {
errors = csr::drtiosat::rtio_error_read();
}
if errors & 1 != 0 {
let channel;
drtioaux::Packet::DestinationStatusRequest { destination } => {
#[cfg(has_drtio_routing)]
let hop = _routing_table.0[destination as usize][*_rank as usize];
#[cfg(not(has_drtio_routing))]
let hop = 0;
if hop == 0 {
let errors;
unsafe {
channel = csr::drtiosat::sequence_error_channel_read();
csr::drtiosat::rtio_error_write(1);
errors = csr::drtiosat::rtio_error_read();
}
drtioaux::send_link(0,
&drtioaux::Packet::RtioErrorSequenceErrorReply { channel })
} else if errors & 2 != 0 {
let channel;
unsafe {
channel = csr::drtiosat::collision_channel_read();
csr::drtiosat::rtio_error_write(2);
if errors & 1 != 0 {
let channel;
unsafe {
channel = csr::drtiosat::sequence_error_channel_read();
csr::drtiosat::rtio_error_write(1);
}
drtioaux::send_link(0,
&drtioaux::Packet::DestinationSequenceErrorReply { channel })?;
} else if errors & 2 != 0 {
let channel;
unsafe {
channel = csr::drtiosat::collision_channel_read();
csr::drtiosat::rtio_error_write(2);
}
drtioaux::send_link(0,
&drtioaux::Packet::DestinationCollisionReply { channel })?;
} else if errors & 4 != 0 {
let channel;
unsafe {
channel = csr::drtiosat::busy_channel_read();
csr::drtiosat::rtio_error_write(4);
}
drtioaux::send_link(0,
&drtioaux::Packet::DestinationBusyReply { channel })?;
}
drtioaux::send_link(0,
&drtioaux::Packet::RtioErrorCollisionReply { channel })
} else if errors & 4 != 0 {
let channel;
unsafe {
channel = csr::drtiosat::busy_channel_read();
csr::drtiosat::rtio_error_write(4);
else {
drtioaux::send_link(0, &drtioaux::Packet::DestinationOkReply)?;
}
drtioaux::send_link(0,
&drtioaux::Packet::RtioErrorBusyReply { channel })
}
else {
drtioaux::send_link(0, &drtioaux::Packet::RtioNoErrorReply)
#[cfg(has_drtio_routing)]
{
if hop != 0 {
let hop = hop as usize;
if hop <= csr::DRTIOREP.len() {
let repno = hop - 1;
match _repeaters[repno].aux_forward(&drtioaux::Packet::DestinationStatusRequest {
destination: destination
}) {
Ok(()) => (),
Err(drtioaux::Error::LinkDown) => drtioaux::send_link(0, &drtioaux::Packet::DestinationDownReply)?,
Err(e) => {
drtioaux::send_link(0, &drtioaux::Packet::DestinationDownReply)?;
error!("aux error when handling destination status request: {}", e);
},
}
} else {
drtioaux::send_link(0, &drtioaux::Packet::DestinationDownReply)?;
}
}
}
Ok(())
}
#[cfg(has_drtio_routing)]
@ -135,11 +166,11 @@ fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
}
#[cfg(not(has_drtio_routing))]
drtioaux::Packet::RoutingSetPath { _destination, _hops } => {
drtioaux::Packet::RoutingSetPath { destination, hops } => {
drtioaux::send_link(0, &drtioaux::Packet::RoutingAck)
}
#[cfg(not(has_drtio_routing))]
drtioaux::Packet::RoutingSetRank { _rank } => {
drtioaux::Packet::RoutingSetRank { rank } => {
drtioaux::send_link(0, &drtioaux::Packet::RoutingAck)
}

36
artiq/firmware/satman/repeater.rs
View File

@ -153,24 +153,34 @@ impl Repeater {
}
}
fn recv_aux_timeout(&self, timeout: u32) -> Result<drtioaux::Packet, &'static str> {
fn recv_aux_timeout(&self, timeout: u32) -> Result<drtioaux::Packet, drtioaux::Error<!>> {
let max_time = clock::get_ms() + timeout as u64;
loop {
if !rep_link_rx_up(self.repno) {
return Err("link went down");
return Err(drtioaux::Error::LinkDown);
}
if clock::get_ms() > max_time {
return Err("timeout");
return Err(drtioaux::Error::TimedOut);
}
match drtioaux::recv_link(self.auxno) {
Ok(Some(packet)) => return Ok(packet),
Ok(None) => (),
Err(_) => return Err("aux packet error")
Err(e) => return Err(e)
}
}
}
pub fn sync_tsc(&self) -> Result<(), &'static str> {
pub fn aux_forward(&self, request: &drtioaux::Packet) -> Result<(), drtioaux::Error<!>> {
if self.state != RepeaterState::Up {
return Err(drtioaux::Error::LinkDown);
}
drtioaux::send_link(self.auxno, request).unwrap();
let reply = self.recv_aux_timeout(200)?;
drtioaux::send_link(0, &reply).unwrap();
Ok(())
}
pub fn sync_tsc(&self) -> Result<(), drtioaux::Error<!>> {
if self.state != RepeaterState::Up {
return Ok(());
}
@ -187,11 +197,11 @@ impl Repeater {
if reply == drtioaux::Packet::TSCAck {
return Ok(());
} else {
return Err("unexpected reply");
return Err(drtioaux::Error::UnexpectedReply);
}
}
pub fn set_path(&self, destination: u8, hops: &[u8; drtio_routing::MAX_HOPS]) -> Result<(), &'static str> {
pub fn set_path(&self, destination: u8, hops: &[u8; drtio_routing::MAX_HOPS]) -> Result<(), drtioaux::Error<!>> {
if self.state != RepeaterState::Up {
return Ok(());
}
@ -202,19 +212,19 @@ impl Repeater {
}).unwrap();
let reply = self.recv_aux_timeout(200)?;
if reply != drtioaux::Packet::RoutingAck {
return Err("unexpected reply");
return Err(drtioaux::Error::UnexpectedReply);
}
Ok(())
}
pub fn load_routing_table(&self, routing_table: &drtio_routing::RoutingTable) -> Result<(), &'static str> {
pub fn load_routing_table(&self, routing_table: &drtio_routing::RoutingTable) -> Result<(), drtioaux::Error<!>> {
for i in 0..drtio_routing::DEST_COUNT {
self.set_path(i as u8, &routing_table.0[i])?;
}
Ok(())
}
pub fn set_rank(&self, rank: u8) -> Result<(), &'static str> {
pub fn set_rank(&self, rank: u8) -> Result<(), drtioaux::Error<!>> {
if self.state != RepeaterState::Up {
return Ok(());
}
@ -223,12 +233,12 @@ impl Repeater {
}).unwrap();
let reply = self.recv_aux_timeout(200)?;
if reply != drtioaux::Packet::RoutingAck {
return Err("unexpected reply");
return Err(drtioaux::Error::UnexpectedReply);
}
Ok(())
}
pub fn rtio_reset(&self, phy: bool) -> Result<(), &'static str> {
pub fn rtio_reset(&self, phy: bool) -> Result<(), drtioaux::Error<!>> {
if self.state != RepeaterState::Up {
return Ok(());
}
@ -237,7 +247,7 @@ impl Repeater {
}).unwrap();
let reply = self.recv_aux_timeout(200)?;
if reply != drtioaux::Packet::ResetAck {
return Err("unexpected reply");
return Err(drtioaux::Error::UnexpectedReply);
}
Ok(())
}