parent
72427dbebb
commit
4b6c5d5679
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@ -1,8 +1,7 @@
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use core::fmt;
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use core::cell::RefCell;
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use core::str::Utf8Error;
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use alloc::rc::Rc;
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use alloc::{vec, vec::Vec, string::String};
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use alloc::{vec, vec::Vec, string::String, collections::BTreeMap, rc::Rc};
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use log::{info, warn, error};
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use num_derive::{FromPrimitive, ToPrimitive};
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@ -18,7 +17,7 @@ use libboard_zynq::{
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},
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timer::GlobalTimer,
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};
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use libcortex_a9::semaphore::Semaphore;
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use libcortex_a9::{semaphore::Semaphore, mutex::Mutex};
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use futures::{select_biased, future::FutureExt};
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use libasync::{smoltcp::{Sockets, TcpStream}, task};
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@ -83,6 +82,9 @@ enum Reply {
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ClockFailure = 15,
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}
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static CACHE_STORE: Mutex<BTreeMap<String, Vec<i32>>> = Mutex::new(BTreeMap::new());
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static DMA_RECORD_STORE: Mutex<BTreeMap<String, (Vec<u8>, i64)>> = Mutex::new(BTreeMap::new());
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async fn write_header(stream: &TcpStream, reply: Reply) -> Result<()> {
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stream.send([0x5a, 0x5a, 0x5a, 0x5a, reply.to_u8().unwrap()].iter().copied()).await?;
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Ok(())
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@ -223,6 +225,25 @@ async fn handle_run_kernel(stream: Option<&TcpStream>, control: &Rc<RefCell<kern
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}
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break;
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}
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kernel::Message::CachePutRequest(key, value) => {
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CACHE_STORE.lock().insert(key, value);
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},
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kernel::Message::CacheGetRequest(key) => {
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const DEFAULT: Vec<i32> = Vec::new();
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let value = CACHE_STORE.lock().get(&key).unwrap_or(&DEFAULT).clone();
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control.borrow_mut().tx.async_send(kernel::Message::CacheGetReply(value)).await;
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},
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kernel::Message::DmaPutRequest(recorder) => {
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DMA_RECORD_STORE.lock().insert(recorder.name, (recorder.buffer, recorder.duration));
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},
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kernel::Message::DmaEraseRequest(name) => {
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// prevent possible OOM when we have large DMA record replacement.
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DMA_RECORD_STORE.lock().remove(&name);
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},
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kernel::Message::DmaGetRequest(name) => {
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let result = DMA_RECORD_STORE.lock().get(&name).map(|v| v.clone());
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control.borrow_mut().tx.async_send(kernel::Message::DmaGetReply(result)).await;
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},
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_ => {
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panic!("unexpected message from core1 while kernel was running: {:?}", reply);
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}
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@ -1,78 +1,27 @@
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use alloc::{string::String, vec::Vec, collections::BTreeMap};
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use libcortex_a9::mutex::Mutex;
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use alloc::string::String;
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use cslice::{CSlice, AsCSlice};
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use core::mem::transmute;
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use core::str;
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use crate::artiq_raise;
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#[derive(Debug)]
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struct Entry {
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data: Vec<i32>,
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borrowed: bool
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}
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#[derive(Debug)]
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struct Cache {
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entries: BTreeMap<String, Entry>
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}
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impl Cache {
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pub const fn new() -> Cache {
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Cache { entries: BTreeMap::new() }
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}
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pub fn get(&mut self, key: &str) -> *const [i32] {
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match self.entries.get_mut(key) {
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None => &[],
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Some(ref mut entry) => {
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entry.borrowed = true;
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&entry.data[..]
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}
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}
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}
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pub fn put(&mut self, key: &str, data: &[i32]) -> Result<(), ()> {
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match self.entries.get_mut(key) {
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None => (),
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Some(ref mut entry) => {
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if entry.borrowed { return Err(()) }
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entry.data = Vec::from(data);
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return Ok(())
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}
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}
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self.entries.insert(String::from(key), Entry {
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data: Vec::from(data),
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borrowed: false
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});
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Ok(())
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}
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pub unsafe fn unborrow(&mut self) {
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for (_key, entry) in self.entries.iter_mut() {
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entry.borrowed = false;
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}
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}
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}
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static CACHE: Mutex<Cache> = Mutex::new(Cache::new());
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use super::{KERNEL_CHANNEL_0TO1, KERNEL_CHANNEL_1TO0, Message};
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pub extern fn get(key: CSlice<u8>) -> CSlice<'static, i32> {
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let value = CACHE.lock().get(str::from_utf8(key.as_ref()).unwrap());
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unsafe {
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transmute::<*const [i32], &'static [i32]>(value).as_c_slice()
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let key = String::from_utf8(key.as_ref().to_vec()).unwrap();
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KERNEL_CHANNEL_1TO0.lock().as_mut().unwrap().send(Message::CacheGetRequest(key));
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let msg = KERNEL_CHANNEL_0TO1.lock().as_mut().unwrap().recv();
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if let Message::CacheGetReply(v) = msg {
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let slice = v.as_c_slice();
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// we intentionally leak the memory here,
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// which does not matter as core1 would restart
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unsafe {
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transmute(slice)
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}
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} else {
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panic!("Expected CacheGetReply for CacheGetRequest");
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}
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}
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pub extern fn put(key: CSlice<u8>, list: CSlice<i32>) {
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let result = CACHE.lock().put(str::from_utf8(key.as_ref()).unwrap(), list.as_ref());
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if result.is_err() {
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artiq_raise!("CacheError", "cannot put into a busy cache row");
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}
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let key = String::from_utf8(key.as_ref().to_vec()).unwrap();
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let value = list.as_ref().to_vec();
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KERNEL_CHANNEL_1TO0.lock().as_mut().unwrap().send(Message::CachePutRequest(key, value));
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}
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pub unsafe fn unborrow() {
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CACHE.lock().unborrow();
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}
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@ -22,7 +22,7 @@ use super::{
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KERNEL_CHANNEL_0TO1, KERNEL_CHANNEL_1TO0,
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KERNEL_IMAGE,
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Message,
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cache
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dma,
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};
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// linker symbols
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@ -149,6 +149,7 @@ pub fn main_core1() {
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unsafe {
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core0_tx.reset();
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core1_tx.reset();
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dma::init_dma_recorder();
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}
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*CHANNEL_0TO1.lock() = Some(core0_tx);
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*CHANNEL_1TO0.lock() = Some(core0_rx);
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@ -186,7 +187,6 @@ pub fn main_core1() {
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core1_rx = core::mem::replace(&mut *KERNEL_CHANNEL_0TO1.lock(), None).unwrap();
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core1_tx = core::mem::replace(&mut *KERNEL_CHANNEL_1TO0.lock(), None).unwrap();
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}
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unsafe { cache::unborrow(); }
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info!("kernel finished");
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core1_tx.send(Message::KernelFinished);
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}
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@ -197,8 +197,6 @@ pub fn main_core1() {
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/// Called by eh_artiq
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pub fn terminate(exception: &'static eh_artiq::Exception<'static>, backtrace: &'static mut [usize]) -> ! {
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unsafe { cache::unborrow(); }
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let load_addr = unsafe {
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KERNEL_IMAGE.as_ref().unwrap().get_load_addr()
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};
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@ -3,110 +3,15 @@ use crate::{
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artiq_raise,
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rtio,
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};
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use alloc::{vec::Vec, string::String, collections::BTreeMap, str};
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use alloc::{vec::Vec, string::String, boxed::Box};
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use cslice::CSlice;
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use super::KERNEL_IMAGE;
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use super::{KERNEL_IMAGE, KERNEL_CHANNEL_0TO1, KERNEL_CHANNEL_1TO0, Message};
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use core::mem;
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use log::debug;
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use libcortex_a9::{
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cache::dcci_slice,
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asm::dsb,
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};
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use libcortex_a9::cache::dcci_slice;
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const ALIGNMENT: usize = 16 * 8;
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const DMA_BUFFER_SIZE: usize = 16 * 8 * 1024;
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struct DmaRecorder {
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active: bool,
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data_len: usize,
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buffer: [u8; DMA_BUFFER_SIZE],
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}
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static mut DMA_RECORDER: DmaRecorder = DmaRecorder {
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active: false,
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data_len: 0,
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buffer: [0; DMA_BUFFER_SIZE],
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};
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#[derive(Debug)]
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struct Entry {
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trace: Vec<u8>,
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padding_len: usize,
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duration: u64
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}
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#[derive(Debug)]
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pub struct Manager {
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entries: BTreeMap<String, Entry>,
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recording_name: String,
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recording_trace: Vec<u8>
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}
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// Copied from https://github.com/m-labs/artiq/blob/master/artiq/firmware/runtime/rtio_dma.rs
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// basically without modification except removing some warnings.
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impl Manager {
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pub const fn new() -> Manager {
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Manager {
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entries: BTreeMap::new(),
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recording_name: String::new(),
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recording_trace: Vec::new(),
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}
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}
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pub fn record_start(&mut self, name: &str) {
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self.recording_name = String::from(name);
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self.recording_trace = Vec::new();
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// or we could needlessly OOM replacing a large trace
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self.entries.remove(name);
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}
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pub fn record_append(&mut self, data: &[u8]) {
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self.recording_trace.extend_from_slice(data);
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}
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pub fn record_stop(&mut self, duration: u64) {
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let mut trace = Vec::new();
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mem::swap(&mut self.recording_trace, &mut trace);
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trace.push(0);
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let data_len = trace.len();
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// Realign.
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trace.reserve(ALIGNMENT - 1);
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let padding = ALIGNMENT - trace.as_ptr() as usize % ALIGNMENT;
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let padding = if padding == ALIGNMENT { 0 } else { padding };
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for _ in 0..padding {
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// Vec guarantees that this will not reallocate
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trace.push(0)
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}
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for i in 1..data_len + 1 {
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trace[data_len + padding - i] = trace[data_len - i]
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}
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let mut name = String::new();
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mem::swap(&mut self.recording_name, &mut name);
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self.entries.insert(name, Entry {
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trace, duration,
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padding_len: padding,
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});
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}
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pub fn erase(&mut self, name: &str) {
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self.entries.remove(name);
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}
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pub fn with_trace<F, R>(&self, name: &str, f: F) -> R
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where F: FnOnce(Option<&[u8]>, u64) -> R {
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match self.entries.get(name) {
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Some(entry) => f(Some(&entry.trace[entry.padding_len..]), entry.duration),
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None => f(None, 0)
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}
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}
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}
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static mut DMA_MANAGER: Manager = Manager::new();
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#[repr(C)]
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pub struct DmaTrace {
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@ -114,18 +19,26 @@ pub struct DmaTrace {
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address: i32,
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}
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fn dma_record_flush() {
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unsafe {
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DMA_MANAGER.record_append(&DMA_RECORDER.buffer[..DMA_RECORDER.data_len]);
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DMA_RECORDER.data_len = 0;
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}
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#[derive(Clone, Debug)]
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pub struct DmaRecorder {
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pub name: String,
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pub buffer: Vec<u8>,
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pub duration: i64,
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}
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static mut RECORDER: Option<DmaRecorder> = None;
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pub unsafe fn init_dma_recorder() {
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// as static would remain after restart, we have to reset it,
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// without running its destructor.
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mem::forget(mem::replace(&mut RECORDER, None));
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}
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pub extern fn dma_record_start(name: CSlice<u8>) {
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let name = str::from_utf8(name.as_ref()).unwrap();
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let name = String::from_utf8(name.as_ref().to_vec()).unwrap();
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KERNEL_CHANNEL_1TO0.lock().as_mut().unwrap().send(Message::DmaEraseRequest(name.clone()));
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unsafe {
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if DMA_RECORDER.active {
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if RECORDER.is_some() {
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artiq_raise!("DMAError", "DMA is already recording")
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}
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@ -135,16 +48,17 @@ pub extern fn dma_record_start(name: CSlice<u8>) {
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library.rebind(b"rtio_output_wide",
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dma_record_output_wide as *const ()).unwrap();
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DMA_RECORDER.active = true;
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DMA_MANAGER.record_start(name);
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RECORDER = Some(DmaRecorder {
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name,
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buffer: Vec::new(),
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duration: 0,
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});
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}
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}
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pub extern fn dma_record_stop(duration: i64) {
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pub extern fn dma_record_stop(_: i64) {
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unsafe {
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dma_record_flush();
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if !DMA_RECORDER.active {
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if RECORDER.is_none() {
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artiq_raise!("DMAError", "DMA is not recording")
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}
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@ -154,29 +68,22 @@ pub extern fn dma_record_stop(duration: i64) {
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library.rebind(b"rtio_output_wide",
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rtio::output_wide as *const ()).unwrap();
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DMA_RECORDER.active = false;
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DMA_MANAGER.record_stop(duration as u64);
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KERNEL_CHANNEL_1TO0.lock().as_mut().unwrap().send(
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Message::DmaPutRequest(RECORDER.take().unwrap())
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);
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}
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}
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#[inline(always)]
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unsafe fn dma_record_output_prepare(timestamp: i64, target: i32,
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words: usize) -> &'static mut [u8] {
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words: usize) {
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// See gateware/rtio/dma.py.
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const HEADER_LENGTH: usize = /*length*/1 + /*channel*/3 + /*timestamp*/8 + /*address*/1;
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let length = HEADER_LENGTH + /*data*/words * 4;
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if DMA_RECORDER.buffer.len() - DMA_RECORDER.data_len < length {
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dma_record_flush()
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}
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let record = &mut DMA_RECORDER.buffer[DMA_RECORDER.data_len..
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DMA_RECORDER.data_len + length];
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DMA_RECORDER.data_len += length;
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let (header, data) = record.split_at_mut(HEADER_LENGTH);
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header.copy_from_slice(&[
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let buffer = &mut RECORDER.as_mut().unwrap().buffer;
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buffer.reserve(length);
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buffer.extend_from_slice(&[
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(length >> 0) as u8,
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(target >> 8) as u8,
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(target >> 16) as u8,
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|
|
@ -191,15 +98,13 @@ unsafe fn dma_record_output_prepare(timestamp: i64, target: i32,
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(timestamp >> 56) as u8,
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(target >> 0) as u8,
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]);
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|
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data
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}
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pub extern fn dma_record_output(target: i32, word: i32) {
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unsafe {
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let timestamp = rtio::now_mu();
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let data = dma_record_output_prepare(timestamp, target, 1);
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data.copy_from_slice(&[
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dma_record_output_prepare(timestamp, target, 1);
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RECORDER.as_mut().unwrap().buffer.extend_from_slice(&[
|
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(word >> 0) as u8,
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(word >> 8) as u8,
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(word >> 16) as u8,
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|
|
@ -213,53 +118,60 @@ pub extern fn dma_record_output_wide(target: i32, words: CSlice<i32>) {
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unsafe {
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let timestamp = rtio::now_mu();
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let mut data = dma_record_output_prepare(timestamp, target, words.len());
|
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dma_record_output_prepare(timestamp, target, words.len());
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let buffer = &mut RECORDER.as_mut().unwrap().buffer;
|
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for word in words.as_ref().iter() {
|
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data[..4].copy_from_slice(&[
|
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buffer.extend_from_slice(&[
|
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(word >> 0) as u8,
|
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(word >> 8) as u8,
|
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(word >> 16) as u8,
|
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(word >> 24) as u8,
|
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]);
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data = &mut data[4..];
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}
|
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}
|
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}
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|
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pub extern fn dma_erase(name: CSlice<u8>) {
|
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let name = str::from_utf8(name.as_ref()).unwrap();
|
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|
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unsafe {
|
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DMA_MANAGER.erase(name);
|
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};
|
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let name = String::from_utf8(name.as_ref().to_vec()).unwrap();
|
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KERNEL_CHANNEL_1TO0.lock().as_mut().unwrap().send(Message::DmaEraseRequest(name));
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}
|
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|
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pub extern fn dma_retrieve(name: CSlice<u8>) -> DmaTrace {
|
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let name = str::from_utf8(name.as_ref()).unwrap();
|
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|
||||
let (trace, duration) = unsafe {
|
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DMA_MANAGER.with_trace(name, |trace, duration| (trace.map(|v| {
|
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dcci_slice(v);
|
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dsb();
|
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v.as_ptr()
|
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}), duration))
|
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};
|
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match trace {
|
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Some(ptr) => Ok(DmaTrace {
|
||||
address: ptr as i32,
|
||||
duration: duration as i64,
|
||||
}),
|
||||
None => Err(())
|
||||
}.unwrap_or_else(|_| {
|
||||
artiq_raise!("DMAError", "DMA trace not found");
|
||||
})
|
||||
let name = String::from_utf8(name.as_ref().to_vec()).unwrap();
|
||||
KERNEL_CHANNEL_1TO0.lock().as_mut().unwrap().send(Message::DmaGetRequest(name));
|
||||
match KERNEL_CHANNEL_0TO1.lock().as_mut().unwrap().recv() {
|
||||
Message::DmaGetReply(None) => (),
|
||||
Message::DmaGetReply(Some((mut v, duration))) => {
|
||||
v.reserve(ALIGNMENT - 1);
|
||||
let original_length = v.len();
|
||||
let padding = ALIGNMENT - v.as_ptr() as usize % ALIGNMENT;
|
||||
let padding = if padding == ALIGNMENT { 0 } else { padding };
|
||||
for _ in 0..padding {
|
||||
v.push(0);
|
||||
}
|
||||
v.copy_within(0..original_length, padding);
|
||||
let v = Box::new(v);
|
||||
let address = Box::into_raw(v) as *mut Vec<u8> as i32;
|
||||
return DmaTrace {
|
||||
address,
|
||||
duration,
|
||||
};
|
||||
},
|
||||
_ => panic!("Expected DmaGetReply after DmaGetRequest!"),
|
||||
}
|
||||
// we have to defer raising error as we have to drop the message first...
|
||||
artiq_raise!("DMAError", "DMA trace not found");
|
||||
}
|
||||
|
||||
pub extern fn dma_playback(timestamp: i64, ptr: i32) {
|
||||
assert!(ptr % ALIGNMENT as i32 == 0);
|
||||
|
||||
debug!("DMA playback started");
|
||||
unsafe {
|
||||
let v = Box::from_raw(ptr as *mut Vec<u8>);
|
||||
let padding = ALIGNMENT - v.as_ptr() as usize % ALIGNMENT;
|
||||
let padding = if padding == ALIGNMENT { 0 } else { padding };
|
||||
dcci_slice(&v[padding..]);
|
||||
let ptr = v.as_ptr().add(padding) as i32;
|
||||
|
||||
csr::rtio_dma::base_address_write(ptr as u32);
|
||||
csr::rtio_dma::time_offset_write(timestamp as u64);
|
||||
|
||||
|
|
@ -268,6 +180,7 @@ pub extern fn dma_playback(timestamp: i64, ptr: i32) {
|
|||
while csr::rtio_dma::enable_read() != 0 {}
|
||||
csr::cri_con::selected_write(0);
|
||||
|
||||
mem::drop(v);
|
||||
debug!("DMA playback finished");
|
||||
|
||||
let error = csr::rtio_dma::error_read();
|
||||
|
|
|
|||
|
|
@ -10,6 +10,7 @@ pub mod core1;
|
|||
mod api;
|
||||
mod rpc;
|
||||
mod dma;
|
||||
pub use dma::DmaRecorder;
|
||||
mod cache;
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
|
|
@ -34,6 +35,15 @@ pub enum Message {
|
|||
RpcSend { is_async: bool, data: Vec<u8> },
|
||||
RpcRecvRequest(*mut ()),
|
||||
RpcRecvReply(Result<usize, RPCException>),
|
||||
|
||||
CacheGetRequest(String),
|
||||
CacheGetReply(Vec<i32>),
|
||||
CachePutRequest(String, Vec<i32>),
|
||||
|
||||
DmaPutRequest(DmaRecorder),
|
||||
DmaEraseRequest(String),
|
||||
DmaGetRequest(String),
|
||||
DmaGetReply(Option<(Vec<u8>, i64)>),
|
||||
}
|
||||
|
||||
static CHANNEL_0TO1: Mutex<Option<sync_channel::Sender<'static, Message>>> = Mutex::new(None);
|
||||
|
|
|
|||
Loading…
Reference in New Issue