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subkernels: add support for (d)dma

This commit is contained in:
mwojcik 2023-12-29 15:10:04 +08:00 committed by Sébastien Bourdeauducq
parent c876acd5a5
commit c9e3771cd5
8 changed files with 529 additions and 94 deletions
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29
artiq/firmware/ksupport/lib.rs
View File

@ -453,12 +453,39 @@ extern fn dma_playback(timestamp: i64, ptr: i32, _uses_ddma: bool) {
}
}
#[cfg(not(kernel_has_rtio_dma))]
#[cfg(all(not(kernel_has_rtio_dma), not(has_rtio_dma)))]
#[unwind(allowed)]
extern fn dma_playback(_timestamp: i64, _ptr: i32, _uses_ddma: bool) {
unimplemented!("not(kernel_has_rtio_dma)")
}
// for satellite (has_rtio_dma but not in kernel)
#[cfg(all(not(kernel_has_rtio_dma), has_rtio_dma))]
#[unwind(allowed)]
extern fn dma_playback(timestamp: i64, ptr: i32, _uses_ddma: bool) {
// DDMA is always used on satellites, so the `uses_ddma` setting is ignored
// StartRemoteRequest reused as "normal" start request
send(&DmaStartRemoteRequest { id: ptr as i32, timestamp: timestamp });
// skip awaitremoterequest - it's a given
recv!(&DmaAwaitRemoteReply { timeout, error, channel, timestamp } => {
if timeout {
raise!("DMAError",
"Error running DMA on satellite device, timed out waiting for results");
}
if error & 1 != 0 {
raise!("RTIOUnderflow",
"RTIO underflow at channel {rtio_channel_info:0}, {1} mu",
channel as i64, timestamp as i64, 0);
}
if error & 2 != 0 {
raise!("RTIODestinationUnreachable",
"RTIO destination unreachable, output, at channel {rtio_channel_info:0}, {1} mu",
channel as i64, timestamp as i64, 0);
}
});
}
#[unwind(allowed)]
extern fn subkernel_load_run(id: u32, destination: u8, run: bool) {
send(&SubkernelLoadRunRequest { id: id, destination: destination, run: run });

8
artiq/firmware/libproto_artiq/drtioaux_proto.rs
View File

@ -113,7 +113,7 @@ pub enum Packet {
id: u32, status: PayloadStatus,
length: u16, trace: [u8; MASTER_PAYLOAD_MAX_SIZE]
},
DmaAddTraceReply { destination: u8, succeeded: bool },
DmaAddTraceReply { source: u8, destination: u8, id: u32, succeeded: bool },
DmaRemoveTraceRequest { source: u8, destination: u8, id: u32 },
DmaRemoveTraceReply { destination: u8, succeeded: bool },
DmaPlaybackRequest { source: u8, destination: u8, id: u32, timestamp: u64 },
@ -303,7 +303,9 @@ impl Packet {
}
},
0xb1 => Packet::DmaAddTraceReply {
source: reader.read_u8()?,
destination: reader.read_u8()?,
id: reader.read_u32()?,
succeeded: reader.read_bool()?
},
0xb2 => Packet::DmaRemoveTraceRequest {
@ -598,9 +600,11 @@ impl Packet {
writer.write_u16(length)?;
writer.write_all(&trace[0..length as usize])?;
},
Packet::DmaAddTraceReply { destination, succeeded } => {
Packet::DmaAddTraceReply { source, destination, id, succeeded } => {
writer.write_u8(0xb1)?;
writer.write_u8(source)?;
writer.write_u8(destination)?;
writer.write_u32(id)?;
writer.write_bool(succeeded)?;
},
Packet::DmaRemoveTraceRequest { source, destination, id } => {

4
artiq/firmware/runtime/rtio_dma.rs
View File

@ -167,10 +167,10 @@ pub mod remote_dma {
}
pub fn playback_done(io: &Io, ddma_mutex: &Mutex,
id: u32, destination: u8, error: u8, channel: u32, timestamp: u64) {
id: u32, source: u8, error: u8, channel: u32, timestamp: u64) {
// called upon receiving PlaybackDone aux packet
let _lock = ddma_mutex.lock(io).unwrap();
let mut trace = unsafe { TRACES.get_mut(&id).unwrap().get_mut(&destination).unwrap() };
let mut trace = unsafe { TRACES.get_mut(&id).unwrap().get_mut(&source).unwrap() };
trace.state = RemoteState::PlaybackEnded {
error: error,
channel: channel,

4
artiq/firmware/runtime/rtio_mgt.rs
View File

@ -491,8 +491,8 @@ pub mod drtio {
&drtioaux::Packet::DmaAddTraceRequest {
id: id, source: 0, destination: destination, status: status, length: len as u16, trace: *slice})?;
match reply {
drtioaux::Packet::DmaAddTraceReply { destination: 0, succeeded: true } => Ok(()),
drtioaux::Packet::DmaAddTraceReply { destination: 0, succeeded: false } => Err(Error::DmaAddTraceFail(destination)),
drtioaux::Packet::DmaAddTraceReply { destination: 0, succeeded: true, .. } => Ok(()),
drtioaux::Packet::DmaAddTraceReply { destination: 0, succeeded: false, .. } => Err(Error::DmaAddTraceFail(destination)),
packet => Err(Error::UnexpectedPacket(packet)),
}
})

317
artiq/firmware/satman/dma.rs
View File

@ -1,7 +1,11 @@
use alloc::{vec::Vec, collections::btree_map::BTreeMap, string::String};
use core::mem;
use board_artiq::{drtioaux, drtio_routing::RoutingTable};
use board_misoc::{csr, cache::flush_l2_cache};
use proto_artiq::drtioaux_proto::PayloadStatus;
use alloc::{vec::Vec, collections::btree_map::BTreeMap};
use ::{cricon_select, RtioMaster};
use routing::{Router, Sliceable};
use kernel::Manager as KernelManager;
use ::{cricon_select, RtioMaster, MASTER_PAYLOAD_MAX_SIZE};
const ALIGNMENT: usize = 64;
@ -19,17 +23,158 @@ pub struct RtioStatus {
pub timestamp: u64
}
#[derive(Debug)]
pub enum Error {
IdNotFound,
PlaybackInProgress,
EntryNotComplete
EntryNotComplete,
MasterDmaFound,
UploadFail,
}
#[derive(Debug)]
struct Entry {
trace: Vec<u8>,
padding_len: usize,
complete: bool
complete: bool,
duration: u64, // relevant for locally ran DMA
}
impl Entry {
pub fn from_vec(data: Vec<u8>, duration: u64) -> Entry {
let mut entry = Entry {
trace: data,
padding_len: 0,
complete: true,
duration: duration,
};
entry.realign();
entry
}
pub fn id(&self) -> u32 {
self.trace[self.padding_len..].as_ptr() as u32
}
pub fn realign(&mut self) {
self.trace.push(0);
let data_len = self.trace.len();
self.trace.reserve(ALIGNMENT - 1);
let padding = ALIGNMENT - self.trace.as_ptr() as usize % ALIGNMENT;
let padding = if padding == ALIGNMENT { 0 } else { padding };
for _ in 0..padding {
// Vec guarantees that this will not reallocate
self.trace.push(0)
}
for i in 1..data_len + 1 {
self.trace[data_len + padding - i] = self.trace[data_len - i]
}
self.complete = true;
self.padding_len = padding;
}
}
#[derive(Debug)]
enum RemoteTraceState {
Unsent,
Sending(usize),
Ready,
Running(usize),
}
#[derive(Debug)]
struct RemoteTraces {
remote_traces: BTreeMap<u8, Sliceable>,
state: RemoteTraceState,
}
impl RemoteTraces {
pub fn new(traces: BTreeMap<u8, Sliceable>) -> RemoteTraces {
RemoteTraces {
remote_traces: traces,
state: RemoteTraceState::Unsent
}
}
// on subkernel request
pub fn upload_traces(&mut self, id: u32, router: &mut Router, rank: u8, self_destination: u8, routing_table: &RoutingTable) -> usize {
let len = self.remote_traces.len();
if len > 0 {
self.state = RemoteTraceState::Sending(self.remote_traces.len());
for (dest, trace) in self.remote_traces.iter_mut() {
// queue up the first packet for all destinations, rest will be sent after first ACK
let mut data_slice: [u8; MASTER_PAYLOAD_MAX_SIZE] = [0; MASTER_PAYLOAD_MAX_SIZE];
let meta = trace.get_slice_master(&mut data_slice);
router.route(drtioaux::Packet::DmaAddTraceRequest {
source: self_destination, destination: *dest, id: id,
status: meta.status, length: meta.len, trace: data_slice
}, routing_table, rank, self_destination);
}
}
len
}
// on incoming Packet::DmaAddTraceReply
pub fn ack_upload(&mut self, kernel_manager: &mut KernelManager, source: u8, id: u32, succeeded: bool, router: &mut Router, rank: u8, self_destination: u8, routing_table: &RoutingTable) {
if let RemoteTraceState::Sending(count) = self.state {
if let Some(trace) = self.remote_traces.get_mut(&source) {
if trace.at_end() {
if count - 1 == 0 {
self.state = RemoteTraceState::Ready;
kernel_manager.ddma_remote_uploaded(succeeded);
} else {
self.state = RemoteTraceState::Sending(count - 1);
}
} else {
// send next slice
let mut data_slice: [u8; MASTER_PAYLOAD_MAX_SIZE] = [0; MASTER_PAYLOAD_MAX_SIZE];
let meta = trace.get_slice_master(&mut data_slice);
router.route(drtioaux::Packet::DmaAddTraceRequest {
source: self_destination, destination: meta.destination, id: id,
status: meta.status, length: meta.len, trace: data_slice
}, routing_table, rank, self_destination);
}
}
}
}
// on subkernel request
pub fn playback(&mut self, id: u32, timestamp: u64, router: &mut Router, rank: u8, self_destination: u8, routing_table: &RoutingTable) {
// route all the playback requests
// remote traces + local trace
self.state = RemoteTraceState::Running(self.remote_traces.len() + 1);
for (dest, _) in self.remote_traces.iter() {
router.route(drtioaux::Packet::DmaPlaybackRequest {
source: self_destination, destination: *dest, id: id, timestamp: timestamp
}, routing_table, rank, self_destination);
// response will be ignored (succeeded = false handled by the main thread)
}
}
// on incoming Packet::DmaPlaybackDone
pub fn remote_finished(&mut self, kernel_manager: &mut KernelManager, error: u8, channel: u32, timestamp: u64) {
if let RemoteTraceState::Running(count) = self.state {
if error != 0 || count - 1 == 0 {
// notify the kernel about a DDMA error or finish
kernel_manager.ddma_finished(error, channel, timestamp);
self.state = RemoteTraceState::Ready;
// further messages will be ignored (if there was an error)
} else { // no error and not the last one awaited
self.state = RemoteTraceState::Running(count - 1);
}
}
}
pub fn erase(&mut self, id: u32, router: &mut Router, rank: u8, self_destination: u8, routing_table: &RoutingTable) {
for (dest, _) in self.remote_traces.iter() {
router.route(drtioaux::Packet::DmaRemoveTraceRequest {
source: self_destination, destination: *dest, id: id
}, routing_table, rank, self_destination);
// response will be ignored as this object will stop existing too
}
}
}
#[derive(Debug)]
@ -37,7 +182,12 @@ pub struct Manager {
entries: BTreeMap<(u8, u32), Entry>,
state: ManagerState,
current_id: u32,
current_source: u8
current_source: u8,
remote_entries: BTreeMap<u32, RemoteTraces>,
name_map: BTreeMap<String, u32>,
recording_trace: Vec<u8>,
recording_name: String
}
impl Manager {
@ -52,6 +202,10 @@ impl Manager {
current_id: 0,
current_source: 0,
state: ManagerState::Idle,
remote_entries: BTreeMap::new(),
name_map: BTreeMap::new(),
recording_trace: Vec::new(),
recording_name: String::new(),
}
}
@ -67,7 +221,9 @@ impl Manager {
self.entries.insert((source, id), Entry {
trace: Vec::new(),
padding_len: 0,
complete: false });
complete: false,
duration: 0
});
self.entries.get_mut(&(source, id)).unwrap()
} else {
entry
@ -77,34 +233,122 @@ impl Manager {
self.entries.insert((source, id), Entry {
trace: Vec::new(),
padding_len: 0,
complete: false });
complete: false,
duration: 0,
});
self.entries.get_mut(&(source, id)).unwrap()
},
};
entry.trace.extend(&trace[0..trace_len]);
if status.is_last() {
entry.trace.push(0);
let data_len = entry.trace.len();
// Realign.
entry.trace.reserve(ALIGNMENT - 1);
let padding = ALIGNMENT - entry.trace.as_ptr() as usize % ALIGNMENT;
let padding = if padding == ALIGNMENT { 0 } else { padding };
for _ in 0..padding {
// Vec guarantees that this will not reallocate
entry.trace.push(0)
}
for i in 1..data_len + 1 {
entry.trace[data_len + padding - i] = entry.trace[data_len - i]
}
entry.complete = true;
entry.padding_len = padding;
entry.realign();
flush_l2_cache();
}
Ok(())
}
// API for subkernel
pub fn record_start(&mut self, name: &str) {
self.recording_name = String::from(name);
self.recording_trace = Vec::new();
}
// API for subkernel
pub fn record_append(&mut self, data: &[u8]) {
self.recording_trace.extend_from_slice(data);
}
// API for subkernel
pub fn record_stop(&mut self, duration: u64, self_destination: u8) -> Result<u32, Error> {
let mut trace = Vec::new();
mem::swap(&mut self.recording_trace, &mut trace);
trace.push(0);
let mut local_trace = Vec::new();
let mut remote_traces: BTreeMap<u8, Sliceable> = BTreeMap::new();
// analyze each entry and put in proper buckets, as the kernel core
// sends whole chunks, to limit comms/kernel CPU communication,
// and as only comms core has access to varios DMA buffers.
let mut ptr = 0;
while trace[ptr] != 0 {
// ptr + 3 = tgt >> 24 (destination)
let len = trace[ptr] as usize;
let destination = trace[ptr+3];
if destination == 0 {
return Err(Error::MasterDmaFound);
} else if destination == self_destination {
local_trace.extend(&trace[ptr..ptr+len]);
}
else {
if let Some(remote_trace) = remote_traces.get_mut(&destination) {
remote_trace.extend(&trace[ptr..ptr+len]);
} else {
remote_traces.insert(destination, Sliceable::new(destination, trace[ptr..ptr+len].to_vec()));
}
}
// and jump to the next event
ptr += len;
}
let local_entry = Entry::from_vec(local_trace, duration);
let id = local_entry.id();
self.entries.insert((self_destination, id), local_entry);
self.remote_entries.insert(id, RemoteTraces::new(remote_traces));
let mut name = String::new();
mem::swap(&mut self.recording_name, &mut name);
self.name_map.insert(name, id);
flush_l2_cache();
Ok(id)
}
pub fn upload_traces(&mut self, id: u32, router: &mut Router, rank: u8, self_destination: u8,
routing_table: &RoutingTable) -> Result<usize, Error> {
let remote_traces = self.remote_entries.get_mut(&id);
let mut len = 0;
if let Some(traces) = remote_traces {
len = traces.upload_traces(id, router, rank, self_destination, routing_table);
}
Ok(len)
}
pub fn with_trace<F, R>(&self, self_destination: u8, name: &str, f: F) -> R
where F: FnOnce(Option<&[u8]>, u64) -> R {
if let Some(ptr) = self.name_map.get(name) {
match self.entries.get(&(self_destination, *ptr)) {
Some(entry) => f(Some(&entry.trace[entry.padding_len..]), entry.duration),
None => f(None, 0)
}
} else {
f(None, 0)
}
}
// API for subkernel
pub fn playback_remote(&mut self, id: u32, timestamp: u64,
router: &mut Router, rank: u8, self_destination: u8, routing_table: &RoutingTable
) -> Result<(), Error> {
if let Some(traces) = self.remote_entries.get_mut(&id) {
traces.playback(id, timestamp, router, rank, self_destination, routing_table);
Ok(())
} else {
Err(Error::IdNotFound)
}
}
// API for subkernel
pub fn erase_name(&mut self, name: &str, router: &mut Router, rank: u8, self_destination: u8, routing_table: &RoutingTable) {
if let Some(id) = self.name_map.get(name) {
if let Some(traces) = self.remote_entries.get_mut(&id) {
traces.erase(*id, router, rank, self_destination, routing_table);
self.remote_entries.remove(&id);
}
self.entries.remove(&(self_destination, *id));
self.name_map.remove(name);
}
}
// API for incoming DDMA (drtio)
pub fn erase(&mut self, source: u8, id: u32) -> Result<(), Error> {
match self.entries.remove(&(source, id)) {
Some(_) => Ok(()),
@ -112,6 +356,33 @@ impl Manager {
}
}
pub fn remote_finished(&mut self, kernel_manager: &mut KernelManager,
id: u32, error: u8, channel: u32, timestamp: u64) {
if let Some(entry) = self.remote_entries.get_mut(&id) {
entry.remote_finished(kernel_manager, error, channel, timestamp);
}
}
pub fn ack_upload(&mut self, kernel_manager: &mut KernelManager, source: u8, id: u32, succeeded: bool,
router: &mut Router, rank: u8, self_destination: u8, routing_table: &RoutingTable) {
if let Some(entry) = self.remote_entries.get_mut(&id) {
entry.ack_upload(kernel_manager, source, id, succeeded, router, rank, self_destination, routing_table);
}
}
pub fn cleanup(&mut self, router: &mut Router, rank: u8, self_destination: u8, routing_table: &RoutingTable) {
// after subkernel ends, remove all self-generated traces
for (_, id) in self.name_map.iter_mut() {
if let Some(traces) = self.remote_entries.get_mut(&id) {
traces.erase(*id, router, rank, self_destination, routing_table);
self.remote_entries.remove(&id);
}
self.entries.remove(&(self_destination, *id));
}
self.name_map.clear();
}
// API for both incoming DDMA (drtio) and subkernel
pub fn playback(&mut self, source: u8, id: u32, timestamp: u64) -> Result<(), Error> {
if self.state != ManagerState::Idle {
return Err(Error::PlaybackInProgress);

179
artiq/firmware/satman/kernel.rs
View File

@ -1,4 +1,4 @@
use core::{mem, option::NoneError, cmp::min};
use core::{mem, option::NoneError};
use alloc::{string::String, format, vec::Vec, collections::{btree_map::BTreeMap, vec_deque::VecDeque}};
use cslice::AsCSlice;
@ -15,7 +15,8 @@ use kernel::eh_artiq::StackPointerBacktrace;
use ::{cricon_select, RtioMaster};
use cache::Cache;
use routing::Router;
use dma::{Manager as DmaManager, Error as DmaError};
use routing::{Router, Sliceable, SliceMeta};
use SAT_PAYLOAD_MAX_SIZE;
use MASTER_PAYLOAD_MAX_SIZE;
@ -65,7 +66,9 @@ enum KernelState {
MsgAwait { max_time: u64, tags: Vec<u8> },
MsgSending,
SubkernelAwaitLoad,
SubkernelAwaitFinish { max_time: u64, id: u32 }
SubkernelAwaitFinish { max_time: u64, id: u32 },
DmaUploading { max_time: u64 },
DmaAwait { max_time: u64 },
}
#[derive(Debug)]
@ -78,7 +81,8 @@ pub enum Error {
AwaitingMessage,
SubkernelIoError,
DrtioError,
KernelException(Sliceable)
KernelException(Sliceable),
DmaError(DmaError),
}
impl From<NoneError> for Error {
@ -99,16 +103,14 @@ impl From<drtioaux::Error<!>> for Error {
}
}
macro_rules! unexpected {
($($arg:tt)*) => (return Err(Error::Unexpected(format!($($arg)*))));
impl From<DmaError> for Error {
fn from(value: DmaError) -> Error {
Error::DmaError(value)
}
}
/* represents data that has to be sent to Master */
#[derive(Debug)]
pub struct Sliceable {
it: usize,
data: Vec<u8>,
destination: u8
macro_rules! unexpected {
($($arg:tt)*) => (return Err(Error::Unexpected(format!($($arg)*))));
}
/* represents interkernel messages */
@ -164,44 +166,6 @@ pub struct SubkernelFinished {
pub source: u8
}
pub struct SliceMeta {
pub destination: u8,
pub len: u16,
pub status: PayloadStatus
}
macro_rules! get_slice_fn {
( $name:tt, $size:expr ) => {
pub fn $name(&mut self, data_slice: &mut [u8; $size]) -> SliceMeta {
let first = self.it == 0;
let len = min($size, self.data.len() - self.it);
let last = self.it + len == self.data.len();
let status = PayloadStatus::from_status(first, last);
data_slice[..len].clone_from_slice(&self.data[self.it..self.it+len]);
self.it += len;
SliceMeta {
destination: self.destination,
len: len as u16,
status: status
}
}
};
}
impl Sliceable {
pub fn new(destination: u8, data: Vec<u8>) -> Sliceable {
Sliceable {
it: 0,
data: data,
destination: destination
}
}
get_slice_fn!(get_slice_sat, SAT_PAYLOAD_MAX_SIZE);
get_slice_fn!(get_slice_master, MASTER_PAYLOAD_MAX_SIZE);
}
impl MessageManager {
pub fn new() -> MessageManager {
MessageManager {
@ -312,10 +276,8 @@ impl Session {
fn running(&self) -> bool {
match self.kernel_state {
KernelState::Absent | KernelState::Loaded => false,
KernelState::Running | KernelState::MsgAwait { .. } |
KernelState::MsgSending | KernelState::SubkernelAwaitLoad |
KernelState::SubkernelAwaitFinish { .. } => true
KernelState::Absent | KernelState::Loaded => false,
_ => true
}
}
@ -490,7 +452,39 @@ impl Manager {
}
}
pub fn process_kern_requests(&mut self, router: &mut Router, routing_table: &RoutingTable, rank: u8, destination: u8) {
pub fn ddma_finished(&mut self, error: u8, channel: u32, timestamp: u64) {
if let KernelState::DmaAwait { .. } = self.session.kernel_state {
kern_send(&kern::DmaAwaitRemoteReply {
timeout: false, error: error, channel: channel, timestamp: timestamp
}).unwrap();
self.session.kernel_state = KernelState::Running;
}
}
pub fn ddma_nack(&mut self) {
// for simplicity treat it as a timeout for now...
if let KernelState::DmaAwait { .. } = self.session.kernel_state {
kern_send(&kern::DmaAwaitRemoteReply {
timeout: true, error: 0, channel: 0, timestamp: 0
}).unwrap();
self.session.kernel_state = KernelState::Running;
}
}
pub fn ddma_remote_uploaded(&mut self, succeeded: bool) {
if let KernelState::DmaUploading { .. } = self.session.kernel_state {
if succeeded {
self.session.kernel_state = KernelState::Running;
kern_acknowledge().unwrap();
} else {
self.stop();
self.runtime_exception(Error::DmaError(DmaError::UploadFail));
}
}
}
pub fn process_kern_requests(&mut self, router: &mut Router, routing_table: &RoutingTable, rank: u8, destination: u8, dma_manager: &mut DmaManager) {
macro_rules! finished {
($with_exception:expr) => {{ Some(SubkernelFinished {
source: self.session.source, id: self.current_id,
@ -504,6 +498,7 @@ impl Manager {
destination: subkernel_finished.source, id: subkernel_finished.id,
with_exception: subkernel_finished.with_exception, exception_src: subkernel_finished.exception_source
}, &routing_table, rank, destination);
dma_manager.cleanup(router, rank, destination, routing_table);
}
if !self.is_running() {
@ -528,7 +523,7 @@ impl Manager {
}
}
match self.process_kern_message(router, routing_table, rank, destination) {
match self.process_kern_message(router, routing_table, rank, destination, dma_manager) {
Ok(Some(with_exception)) => {
self.last_finished = finished!(with_exception)
},
@ -585,6 +580,20 @@ impl Manager {
}
Ok(())
}
KernelState::DmaAwait { max_time } => {
if clock::get_ms() > *max_time {
kern_send(&kern::DmaAwaitRemoteReply { timeout: true, error: 0, channel: 0, timestamp: 0 })?;
self.session.kernel_state = KernelState::Running;
}
// ddma_finished() and nack() covers the other case
Ok(())
}
KernelState::DmaUploading { max_time } => {
if clock::get_ms() > *max_time {
unexpected!("DMAError: Timed out sending traces to remote");
}
Ok(())
}
_ => Ok(())
}
}
@ -622,13 +631,19 @@ impl Manager {
fn process_kern_message(&mut self, router: &mut Router,
routing_table: &RoutingTable,
rank: u8, destination: u8
rank: u8, destination: u8,
dma_manager: &mut DmaManager
) -> Result<Option<bool>, Error> {
// returns Ok(with_exception) on finish
// None if the kernel is still running
kern_recv(|request| {
match (request, &self.session.kernel_state) {
(&kern::LoadReply(_), KernelState::Loaded) => {
(&kern::LoadReply(_), KernelState::Loaded) |
(_, KernelState::DmaUploading { .. }) |
(_, KernelState::DmaAwait { .. }) |
(_, KernelState::MsgSending) |
(_, KernelState::SubkernelAwaitLoad) |
(_, KernelState::SubkernelAwaitFinish { .. }) => {
// We're standing by; ignore the message.
return Ok(None)
}
@ -693,6 +708,50 @@ impl Manager {
return Ok(Some(true))
}
&kern::DmaRecordStart(name) => {
dma_manager.record_start(name);
kern_acknowledge()
}
&kern::DmaRecordAppend(data) => {
dma_manager.record_append(data);
kern_acknowledge()
}
&kern::DmaRecordStop { duration, enable_ddma: _ } => {
// ddma is always used on satellites
if let Ok(id) = dma_manager.record_stop(duration, destination) {
let remote_count = dma_manager.upload_traces(id, router, rank, destination, routing_table)?;
if remote_count > 0 {
let max_time = clock::get_ms() + 10_000 as u64;
self.session.kernel_state = KernelState::DmaUploading { max_time: max_time };
Ok(())
} else {
kern_acknowledge()
}
} else {
unexpected!("DMAError: found an unsupported call to RTIO devices on master")
}
}
&kern::DmaEraseRequest { name } => {
dma_manager.erase_name(name, router, rank, destination, routing_table);
kern_acknowledge()
}
&kern::DmaRetrieveRequest { name } => {
dma_manager.with_trace(destination, name, |trace, duration| {
kern_send(&kern::DmaRetrieveReply {
trace: trace,
duration: duration,
uses_ddma: true,
})
})
}
&kern::DmaStartRemoteRequest { id, timestamp } => {
let max_time = clock::get_ms() + 10_000 as u64;
self.session.kernel_state = KernelState::DmaAwait { max_time: max_time };
dma_manager.playback_remote(id as u32, timestamp as u64, router, rank, destination, routing_table)?;
dma_manager.playback(destination, id as u32, timestamp as u64)?;
Ok(())
}
&kern::SubkernelMsgSend { id: _, destination: msg_dest, count, tag, data } => {
let dest = match msg_dest {
Some(dest) => dest,
@ -717,13 +776,13 @@ impl Manager {
router.route(drtioaux::Packet::SubkernelLoadRunRequest {
source: destination, destination: sk_destination, id: id, run: run
}, routing_table, rank, destination);
kern_acknowledge()
Ok(())
}
&kern::SubkernelAwaitFinishRequest{ id, timeout } => {
let max_time = clock::get_ms() + timeout as u64;
self.session.kernel_state = KernelState::SubkernelAwaitFinish { max_time: max_time, id: id };
kern_acknowledge()
Ok(())
}
request => unexpected!("unexpected request {:?} from kernel CPU", request)

22
artiq/firmware/satman/main.rs
View File

@ -377,9 +377,14 @@ fn process_aux_packet(dmamgr: &mut DmaManager, analyzer: &mut Analyzer, kernelmg
*self_destination = destination;
let succeeded = dmamgr.add(source, id, status, &trace, length as usize).is_ok();
router.send(drtioaux::Packet::DmaAddTraceReply {
destination: source, succeeded: succeeded
source: *self_destination, destination: source, id: id, succeeded: succeeded
}, _routing_table, *rank, *self_destination)
}
drtioaux::Packet::DmaAddTraceReply { source, destination: _destination, id, succeeded } => {
forward!(_routing_table, _destination, *rank, _repeaters, &packet);
dmamgr.ack_upload(kernelmgr, source, id, succeeded, router, *rank, *self_destination, _routing_table);
Ok(())
}
drtioaux::Packet::DmaRemoveTraceRequest { source, destination: _destination, id } => {
forward!(_routing_table, _destination, *rank, _repeaters, &packet);
let succeeded = dmamgr.erase(source, id).is_ok();
@ -395,6 +400,18 @@ fn process_aux_packet(dmamgr: &mut DmaManager, analyzer: &mut Analyzer, kernelmg
destination: source, succeeded: succeeded
}, _routing_table, *rank, *self_destination)
}
drtioaux::Packet::DmaPlaybackReply { destination: _destination, succeeded } => {
forward!(_routing_table, _destination, *rank, _repeaters, &packet);
if !succeeded {
kernelmgr.ddma_nack();
}
Ok(())
}
drtioaux::Packet::DmaPlaybackStatus { source: _, destination: _destination, id, error, channel, timestamp } => {
forward!(_routing_table, _destination, *rank, _repeaters, &packet);
dmamgr.remote_finished(kernelmgr, id, error, channel, timestamp);
Ok(())
}
drtioaux::Packet::SubkernelAddDataRequest { destination, id, status, length, data } => {
forward!(_routing_table, destination, *rank, _repeaters, &packet);
@ -426,7 +443,6 @@ fn process_aux_packet(dmamgr: &mut DmaManager, analyzer: &mut Analyzer, kernelmg
kernelmgr.subkernel_load_run_reply(succeeded, *self_destination);
Ok(())
}
// { destination: u8, id: u32, with_exception: bool, exception_src: u8 },
drtioaux::Packet::SubkernelFinished { destination: _destination, id, with_exception, exception_src } => {
forward!(_routing_table, _destination, *rank, _repeaters, &packet);
kernelmgr.remote_subkernel_finished(id, with_exception, exception_src);
@ -772,7 +788,7 @@ pub extern fn main() -> i32 {
}, &routing_table, rank, destination);
}
kernelmgr.process_kern_requests(&mut router, &routing_table, rank, destination);
kernelmgr.process_kern_requests(&mut router, &routing_table, rank, destination, &mut dma_manager);
if let Some((repno, packet)) = router.get_downstream_packet() {
if let Err(e) = repeaters[repno].aux_send(&packet) {

60
artiq/firmware/satman/routing.rs
View File

@ -1,6 +1,64 @@
use alloc::collections::vec_deque::VecDeque;
use alloc::{vec::Vec, collections::vec_deque::VecDeque};
use board_artiq::{drtioaux, drtio_routing};
use board_misoc::csr;
use core::cmp::min;
use proto_artiq::drtioaux_proto::PayloadStatus;
use SAT_PAYLOAD_MAX_SIZE;
use MASTER_PAYLOAD_MAX_SIZE;
/* represents data that has to be sent with the aux protocol */
#[derive(Debug)]
pub struct Sliceable {
it: usize,
data: Vec<u8>,
destination: u8
}
pub struct SliceMeta {
pub destination: u8,
pub len: u16,
pub status: PayloadStatus
}
macro_rules! get_slice_fn {
( $name:tt, $size:expr ) => {
pub fn $name(&mut self, data_slice: &mut [u8; $size]) -> SliceMeta {
let first = self.it == 0;
let len = min($size, self.data.len() - self.it);
let last = self.it + len == self.data.len();
let status = PayloadStatus::from_status(first, last);
data_slice[..len].clone_from_slice(&self.data[self.it..self.it+len]);
self.it += len;
SliceMeta {
destination: self.destination,
len: len as u16,
status: status
}
}
};
}
impl Sliceable {
pub fn new(destination: u8, data: Vec<u8>) -> Sliceable {
Sliceable {
it: 0,
data: data,
destination: destination
}
}
pub fn at_end(&self) -> bool {
self.it == self.data.len()
}
pub fn extend(&mut self, data: &[u8]) {
self.data.extend(data);
}
get_slice_fn!(get_slice_sat, SAT_PAYLOAD_MAX_SIZE);
get_slice_fn!(get_slice_master, MASTER_PAYLOAD_MAX_SIZE);
}
// Packets from downstream (further satellites) are received and routed appropriately.
// they're passed as soon as possible downstream (within the subtree), or sent upstream,