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libboard_artiq: support multiple aux rx buffers

This commit is contained in:
mwojcik 2024-04-24 17:12:57 +08:00
parent 92a29051f7
commit 2d10503c20
3 changed files with 24 additions and 24 deletions
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21
src/libboard_artiq/src/drtioaux.rs
View File

@ -74,12 +74,15 @@ where F: FnOnce(&[u8]) -> Result<T, Error> {
let linkidx = linkno as usize;
unsafe {
if (DRTIOAUX[linkidx].aux_rx_present_read)() == 1 {
let ptr = (DRTIOAUX_MEM[linkidx].base + DRTIOAUX_MEM[linkidx].size / 2) as *mut u32;
let len = (DRTIOAUX[linkidx].aux_rx_length_read)() as usize;
let cpu_ptr = (DRTIOAUX[linkidx].aux_read_pointer_read)() as usize;
let ptr = (DRTIOAUX_MEM[linkidx].base + DRTIOAUX_MEM[linkidx].size / 2 + cpu_ptr * 0x400) as *mut u32;
// work buffer to accomodate axi burst reads
let mut buf: [u8; 1024] = [0; 1024];
copy_work_buffer(ptr, buf.as_mut_ptr() as *mut u32, len as isize);
let result = f(&buf[0..len]);
// buffer at maximum proto packet size, not maximum gateware supported size
// to minimize copying time
const LEN: usize = 512;
let mut buf: [u8; LEN] = [0; LEN];
copy_work_buffer(ptr, buf.as_mut_ptr() as *mut u32, LEN as isize);
let result = f(&buf);
(DRTIOAUX[linkidx].aux_rx_present_write)(1);
Ok(Some(result?))
} else {
@ -100,15 +103,15 @@ pub fn recv(linkno: u8) -> Result<Option<Packet>, Error> {
let mut reader = Cursor::new(buffer);
let checksum_at = buffer.len() - 4;
let packet = Packet::read_from(&mut reader)?;
let padding = (12 - (reader.position() % 8)) % 8;
let checksum_at = reader.position() + padding;
let checksum = crc::crc32::checksum_ieee(&reader.get_ref()[0..checksum_at]);
reader.set_position(checksum_at);
if reader.read_u32()? != checksum {
return Err(Error::CorruptedPacket);
}
reader.set_position(0);
Ok(Packet::read_from(&mut reader)?)
Ok(packet)
})
}

21
src/libboard_artiq/src/drtioaux_async.rs
View File

@ -38,12 +38,15 @@ where F: FnOnce(&[u8]) -> Result<T, Error> {
let linkidx = linkno as usize;
unsafe {
if (DRTIOAUX[linkidx].aux_rx_present_read)() == 1 {
let ptr = (DRTIOAUX_MEM[linkidx].base + DRTIOAUX_MEM[linkidx].size / 2) as *mut u32;
let len = (DRTIOAUX[linkidx].aux_rx_length_read)() as usize;
let cpu_ptr = (DRTIOAUX[linkidx].aux_read_pointer_read)() as usize;
let ptr = (DRTIOAUX_MEM[linkidx].base + DRTIOAUX_MEM[linkidx].size / 2 + cpu_ptr * 0x400) as *mut u32;
// work buffer to accomodate axi burst reads
let mut buf: [u8; 1024] = [0; 1024];
copy_work_buffer(ptr, buf.as_mut_ptr() as *mut u32, len as isize);
let result = f(&buf[0..len]);
// buffer at maximum proto packet size, not maximum gateware supported size
// to minimize required copying time
const LEN: usize = 512;
let mut buf: [u8; LEN] = [0; LEN];
copy_work_buffer(ptr, buf.as_mut_ptr() as *mut u32, LEN as isize);
let result = f(&buf);
(DRTIOAUX[linkidx].aux_rx_present_write)(1);
Ok(Some(result?))
} else {
@ -64,15 +67,15 @@ pub async fn recv(linkno: u8) -> Result<Option<Packet>, Error> {
let mut reader = Cursor::new(buffer);
let checksum_at = buffer.len() - 4;
let packet = Packet::read_from(&mut reader)?;
let padding = (12 - (reader.position() % 8)) % 8;
let checksum_at = reader.position() + padding;
let checksum = crc::crc32::checksum_ieee(&reader.get_ref()[0..checksum_at]);
reader.set_position(checksum_at);
if reader.read_u32()? != checksum {
return Err(Error::CorruptedPacket);
}
reader.set_position(0);
Ok(Packet::read_from(&mut reader)?)
Ok(packet)
})
.await
}

6
src/libboard_artiq/src/drtioaux_proto.rs
View File

@ -89,8 +89,6 @@ pub enum Packet {
RoutingSetRank {
rank: u8,
},
RoutingRetrievePackets,
RoutingNoPackets,
RoutingAck,
MonitorRequest {
@ -325,8 +323,6 @@ impl Packet {
rank: reader.read_u8()?,
},
0x32 => Packet::RoutingAck,
0x33 => Packet::RoutingRetrievePackets,
0x34 => Packet::RoutingNoPackets,
0x40 => Packet::MonitorRequest {
destination: reader.read_u8()?,
@ -602,8 +598,6 @@ impl Packet {
writer.write_u8(rank)?;
}
Packet::RoutingAck => writer.write_u8(0x32)?,
Packet::RoutingRetrievePackets => writer.write_u8(0x33)?,
Packet::RoutingNoPackets => writer.write_u8(0x34)?,
Packet::MonitorRequest {
destination,