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drtio: implement destination state checks on operations

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This commit is contained in:
Sebastien Bourdeauducq 2018-09-15 15:55:45 +08:00
parent 1990ab35d3
commit d38755feff
10 changed files with 63 additions and 44 deletions
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2
artiq/coredevice/exceptions.py
View File

@ -91,7 +91,7 @@ class RTIOOverflow(Exception):
artiq_builtin = True
class RTIOLinkError(Exception):
class RTIODestinationUnreachable(Exception):
"""Raised with a RTIO operation could not be completed due to a DRTIO link
being down.
"""

4
artiq/firmware/ksupport/lib.rs
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@ -428,8 +428,8 @@ extern fn dma_playback(timestamp: i64, ptr: i32) {
timestamp as i64, channel as i64, 0);
}
if error & 2 != 0 {
raise!("RTIOLinkError",
"RTIO output link error at {0} mu, channel {1}",
raise!("RTIODestinationUnreachable",
"RTIO destination unreachable, output, at {0} mu, channel {1}",
timestamp as i64, channel as i64, 0);
}
}

32
artiq/firmware/ksupport/rtio.rs
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@ -7,13 +7,13 @@ mod imp {
use ::send;
use kernel_proto::*;
pub const RTIO_O_STATUS_WAIT: u8 = 1;
pub const RTIO_O_STATUS_UNDERFLOW: u8 = 2;
pub const RTIO_O_STATUS_LINK_ERROR: u8 = 4;
pub const RTIO_I_STATUS_WAIT_EVENT: u8 = 1;
pub const RTIO_I_STATUS_OVERFLOW: u8 = 2;
pub const RTIO_I_STATUS_WAIT_STATUS: u8 = 4;
pub const RTIO_I_STATUS_LINK_ERROR: u8 = 8;
pub const RTIO_O_STATUS_WAIT: u8 = 1;
pub const RTIO_O_STATUS_UNDERFLOW: u8 = 2;
pub const RTIO_O_STATUS_DESTINATION_UNREACHABLE: u8 = 4;
pub const RTIO_I_STATUS_WAIT_EVENT: u8 = 1;
pub const RTIO_I_STATUS_OVERFLOW: u8 = 2;
pub const RTIO_I_STATUS_WAIT_STATUS: u8 = 4;
pub const RTIO_I_STATUS_DESTINATION_UNREACHABLE: u8 = 8;
pub extern fn init() {
send(&RtioInitRequest);
@ -49,9 +49,9 @@ mod imp {
"RTIO underflow at {0} mu, channel {1}, slack {2} mu",
timestamp, channel as i64, timestamp - get_counter());
}
if status & RTIO_O_STATUS_LINK_ERROR != 0 {
raise!("RTIOLinkError",
"RTIO output link error at {0} mu, channel {1}",
if status & RTIO_O_STATUS_DESTINATION_UNREACHABLE != 0 {
raise!("RTIODestinationUnreachable",
"RTIO destination unreachable, output, at {0} mu, channel {1}",
timestamp, channel as i64, 0);
}
}
@ -108,9 +108,9 @@ mod imp {
if status & RTIO_I_STATUS_WAIT_EVENT != 0 {
return !0
}
if status & RTIO_I_STATUS_LINK_ERROR != 0 {
raise!("RTIOLinkError",
"RTIO input link error on channel {0}",
if status & RTIO_I_STATUS_DESTINATION_UNREACHABLE != 0 {
raise!("RTIODestinationUnreachable",
"RTIO destination unreachable, input, on channel {0}",
channel as i64, 0, 0);
}
@ -135,9 +135,9 @@ mod imp {
"RTIO input overflow on channel {0}",
channel as i64, 0, 0);
}
if status & RTIO_I_STATUS_LINK_ERROR != 0 {
raise!("RTIOLinkError",
"RTIO input link error on channel {0}",
if status & RTIO_I_STATUS_DESTINATION_UNREACHABLE != 0 {
raise!("RTIODestinationUnreachable",
"RTIO destination unreachable, input, on channel {0}",
channel as i64, 0, 0);
}

28
artiq/firmware/libboard_artiq/drtio_routing.rs
View File

@ -72,13 +72,25 @@ pub fn config_routing_table(default_n_links: usize) -> RoutingTable {
}
#[cfg(has_drtio_routing)]
pub fn program_interconnect(rt: &RoutingTable, rank: u8)
{
for i in 0..DEST_COUNT {
let hop = rt.0[i][rank as usize];
unsafe {
csr::routing_table::destination_write(i as _);
csr::routing_table::hop_write(hop);
}
pub fn interconnect_enable(routing_table: &RoutingTable, rank: u8, destination: u8) {
let hop = routing_table.0[destination as usize][rank as usize];
unsafe {
csr::routing_table::destination_write(destination);
csr::routing_table::hop_write(hop);
}
}
#[cfg(has_drtio_routing)]
pub fn interconnect_disable(destination: u8) {
unsafe {
csr::routing_table::destination_write(destination);
csr::routing_table::hop_write(INVALID_HOP);
}
}
#[cfg(has_drtio_routing)]
pub fn interconnect_enable_all(routing_table: &RoutingTable, rank: u8) {
for i in 0..DEST_COUNT {
interconnect_enable(routing_table, rank, i as u8);
}
}

10
artiq/firmware/runtime/rtio_mgt.rs
View File

@ -216,6 +216,7 @@ pub mod drtio {
if !up_destinations[destination] {
info!("[DEST#{}] destination is up", destination);
up_destinations[destination] = true;
drtio_routing::interconnect_enable(routing_table, 0, destination as u8);
}
} else if hop as usize <= csr::DRTIO.len() {
let linkno = hop - 1;
@ -228,6 +229,7 @@ pub mod drtio {
Ok(drtioaux::Packet::DestinationDownReply) => {
info!("[DEST#{}] destination is down", destination);
up_destinations[destination] = false;
drtio_routing::interconnect_disable(destination as u8);
},
Ok(drtioaux::Packet::DestinationOkReply) => (),
Ok(drtioaux::Packet::DestinationSequenceErrorReply { channel }) =>
@ -242,6 +244,7 @@ pub mod drtio {
} else {
info!("[DEST#{}] destination is down", destination);
up_destinations[destination] = false;
drtio_routing::interconnect_disable(destination as u8);
}
} else {
if link_up(linkno) {
@ -253,6 +256,7 @@ pub mod drtio {
Ok(drtioaux::Packet::DestinationOkReply) => {
info!("[DEST#{}] destination is up", destination);
up_destinations[destination] = true;
drtio_routing::interconnect_enable(routing_table, 0, destination as u8);
init_buffer_space(destination as u8, linkno);
},
Ok(packet) => error!("[DEST#{}] received unexpected aux packet: {:?}", destination, packet),
@ -394,12 +398,6 @@ pub fn startup(io: &Io, routing_table: &Urc<RefCell<drtio_routing::RoutingTable>
}
}
#[cfg(has_drtio_routing)]
{
let routing_table = routing_table.clone();
drtio_routing::program_interconnect(&routing_table.borrow(), 0);
}
drtio::startup(io, &routing_table);
init_core(true);
io.spawn(4096, async_error_thread);

2
artiq/firmware/satman/main.rs
View File

@ -171,7 +171,7 @@ fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
#[cfg(has_drtio_routing)]
drtioaux::Packet::RoutingSetRank { rank } => {
*_rank = rank;
drtio_routing::program_interconnect(_routing_table, rank);
drtio_routing::interconnect_enable_all(_routing_table, rank);
let rep_rank = rank + 1;
for rep in _repeaters.iter() {

6
artiq/gateware/drtio/rt_controller_master.py
View File

@ -102,8 +102,7 @@ class RTController(Module):
o_status_wait = Signal()
o_status_underflow = Signal()
self.comb += [
self.cri.o_status.eq(Cat(
o_status_wait, o_status_underflow, ~self.csrs.link_up.storage)),
self.cri.o_status.eq(Cat(o_status_wait, o_status_underflow)),
self.csrs.o_wait.status.eq(o_status_wait)
]
o_underflow_set = Signal()
@ -143,8 +142,7 @@ class RTController(Module):
i_status_overflow = Signal()
i_status_wait_status = Signal()
self.comb += self.cri.i_status.eq(Cat(
i_status_wait_event, i_status_overflow, i_status_wait_status,
~self.csrs.link_up.storage))
i_status_wait_event, i_status_overflow, i_status_wait_status))
load_read_reply = Signal()
self.sync.sys_with_rst += [

15
artiq/gateware/rtio/cri.py
View File

@ -34,7 +34,7 @@ layout = [
("o_data", 512, DIR_M_TO_S),
("o_address", 16, DIR_M_TO_S),
# o_status bits:
# <0:wait> <1:underflow> <2:link error>
# <0:wait> <1:underflow> <2:destination unreachable>
("o_status", 3, DIR_S_TO_M),
# pessimistic estimate of the number of outputs events that can be
@ -47,7 +47,7 @@ layout = [
("i_timestamp", 64, DIR_S_TO_M),
# i_status bits:
# <0:wait for event (command timeout)> <1:overflow> <2:wait for status>
# <3:link error>
# <3:destination unreachable>
# <0> and <1> are mutually exclusive. <1> has higher priority.
("i_status", 4, DIR_S_TO_M),
]
@ -122,6 +122,17 @@ class CRIDecoder(Module, AutoCSR):
# # #
# routing
if enable_routing:
destination_unreachable = Interface()
self.comb += [
destination_unreachable.o_status.eq(4),
destination_unreachable.i_status.eq(8)
]
slaves = slaves[:]
slaves.append(destination_unreachable)
target_len = 2**(len(slaves) - 1).bit_length()
slaves += [destination_unreachable]*(target_len - len(slaves))
slave_bits = bits_for(len(slaves)-1)
selected = Signal(slave_bits)

4
artiq/gateware/test/drtio/test_full_stack.py
View File

@ -125,7 +125,7 @@ class OutputsTestbench:
if status & 0x2:
raise RTIOUnderflow
if status & 0x4:
raise RTIOLinkError
raise RTIODestinationUnreachable
yield
wlen += 1
return wlen
@ -264,7 +264,7 @@ class TestFullStack(unittest.TestCase):
if status & 0x2:
return "overflow"
if status & 0x8:
return "link error"
return "destination unreachable"
return ((yield from kcsrs.i_data.read()),
(yield from kcsrs.i_timestamp.read()))

4
artiq/gateware/test/rtio/test_dma.py
View File

@ -5,7 +5,7 @@ import itertools
from migen import *
from misoc.interconnect import wishbone
from artiq.coredevice.exceptions import RTIOUnderflow, RTIOLinkError
from artiq.coredevice.exceptions import RTIOUnderflow, RTIODestinationUnreachable
from artiq.gateware import rtio
from artiq.gateware.rtio import dma, cri
from artiq.gateware.rtio.phy import ttl_simple
@ -61,7 +61,7 @@ def do_dma(dut, address):
if error & 1:
raise RTIOUnderflow
if error & 2:
raise RTIOLinkError
raise RTIODestinationUnreachable
test_writes1 = [