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perform RTIO init on comms CPU side

This commit is contained in:
Sebastien Bourdeauducq 2016-12-09 14:16:55 +08:00
parent 5accb7a0ac
commit bc36bda94a
10 changed files with 40 additions and 25 deletions
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7
artiq/gateware/drtio/rt_controller.py
View File

@ -17,6 +17,9 @@ class _CSRs(AutoCSR):
self.set_time = CSR()
self.underflow_margin = CSRStorage(16, reset=200)
self.reset = CSR()
self.reset_phy = CSR()
self.o_get_fifo_space = CSR()
self.o_dbg_fifo_space = CSRStatus(16)
self.o_dbg_last_timestamp = CSRStatus(64)
@ -57,11 +60,11 @@ class RTController(Module):
# reset
self.sync += [
If(rt_packets.reset_ack, rt_packets.reset_stb.eq(0)),
If(self.cri.cmd == cri.commands["reset"],
If(self.csrs.reset.re,
rt_packets.reset_stb.eq(1),
rt_packets.reset_phy.eq(0)
),
If(self.cri.cmd == cri.commands["reset_phy"],
If(self.csrs.reset_phy.re,
rt_packets.reset_stb.eq(1),
rt_packets.reset_phy.eq(1)
),

3
artiq/gateware/rtio/analyzer.py
View File

@ -78,8 +78,7 @@ class MessageEncoder(Module, AutoCSR):
exception.channel.eq(kcsrs.chan_sel.storage),
exception.rtio_counter.eq(rtio_counter),
]
for ename in ("reset", "reset_phy",
"o_underflow_reset", "o_sequence_error_reset",
for ename in ("o_underflow_reset", "o_sequence_error_reset",
"o_collision_reset", "i_overflow_reset"):
self.comb += \
If(getattr(kcsrs, ename).re,

9
artiq/gateware/rtio/core.py
View File

@ -5,6 +5,7 @@ from migen import *
from migen.genlib.record import Record
from migen.genlib.fifo import AsyncFIFO
from migen.genlib.resetsync import AsyncResetSynchronizer
from misoc.interconnect.csr import *
from artiq.gateware.rtio import cri, rtlink
from artiq.gateware.rtio.cdc import *
@ -264,13 +265,15 @@ class LogChannel:
self.overrides = []
class Core(Module):
class Core(Module, AutoCSR):
def __init__(self, channels, fine_ts_width=None, guard_io_cycles=20):
if fine_ts_width is None:
fine_ts_width = max(rtlink.get_fine_ts_width(c.interface)
for c in channels)
self.cri = cri.Interface()
self.reset = CSR()
self.reset_phy = CSR()
self.comb += self.cri.arb_gnt.eq(1)
# Clocking/Reset
@ -279,8 +282,8 @@ class Core(Module):
cmd_reset = Signal(reset=1)
cmd_reset_phy = Signal(reset=1)
self.sync += [
cmd_reset.eq(self.cri.cmd == cri.commands["reset"]),
cmd_reset_phy.eq(self.cri.cmd == cri.commands["reset_phy"])
cmd_reset.eq(self.reset.re),
cmd_reset_phy.eq(self.reset_phy.re)
]
cmd_reset.attr.add("no_retiming")
cmd_reset_phy.attr.add("no_retiming")

20
artiq/gateware/rtio/cri.py
View File

@ -8,17 +8,15 @@ from misoc.interconnect.csr import *
commands = {
"nop": 0,
"reset": 1,
"reset_phy": 2,
"write": 3,
"read": 4,
"write": 1,
"read": 2,
"o_underflow_reset": 5,
"o_sequence_error_reset": 6,
"o_collision_reset": 7,
"o_busy_reset": 8,
"i_overflow_reset": 9
"o_underflow_reset": 3,
"o_sequence_error_reset": 4,
"o_collision_reset": 5,
"o_busy_reset": 6,
"i_overflow_reset": 7
}
@ -57,8 +55,6 @@ class KernelInitiator(Module, AutoCSR):
self.arb_req = CSRStorage()
self.arb_gnt = CSRStatus()
self.reset = CSR()
self.reset_phy = CSR()
self.chan_sel = CSRStorage(24)
self.o_data = CSRStorage(512, write_from_dev=True)
@ -91,8 +87,6 @@ class KernelInitiator(Module, AutoCSR):
self.arb_gnt.status.eq(self.cri.arb_gnt),
self.cri.cmd.eq(commands["nop"]),
If(self.reset.re, self.cri.cmd.eq(commands["reset"])),
If(self.reset_phy.re, self.cri.cmd.eq(commands["reset_phy"])),
If(self.o_we.re, self.cri.cmd.eq(commands["write"])),
If(self.i_re.re, self.cri.cmd.eq(commands["read"])),
If(self.o_underflow_reset.re, self.cri.cmd.eq(commands["o_underflow_reset"])),

1
artiq/gateware/targets/kc705.py
View File

@ -144,6 +144,7 @@ class _NIST_Ions(MiniSoC, AMPSoC):
self.submodules.rtio_crg = _RTIOCRG(self.platform, self.crg.cd_sys.clk)
self.csr_devices.append("rtio_crg")
self.submodules.rtio_core = rtio.Core(rtio_channels)
self.csr_devices.append("rtio_core")
self.submodules.rtio = rtio.KernelInitiator()
self.submodules.rtio_dma = rtio.DMA(self.get_native_sdram_if())
self.register_kernel_cpu_csrdevice("rtio")

1
artiq/gateware/targets/pipistrello.py
View File

@ -218,6 +218,7 @@ trce -v 12 -fastpaths -tsi {build_name}.tsi -o {build_name}.twr {build_name}.ncd
# RTIO logic
self.submodules.rtio_core = rtio.Core(rtio_channels)
self.csr_devices.append("rtio_core")
self.submodules.rtio = rtio.KernelInitiator(self.rtio_core.cri)
self.register_kernel_cpu_csrdevice("rtio")
self.submodules.rtio_moninj = rtio.MonInj(rtio_channels)

4
artiq/protocols/analyzer.py
View File

@ -9,9 +9,9 @@ class MessageType(Enum):
class ExceptionType(Enum):
reset = 0b000000
legacy_reset = 0b000000
legacy_reset_falling = 0b000001
reset_phy = 0b000010
legacy_reset_phy = 0b000010
legacy_reset_phy_falling = 0b000011
o_underflow_reset = 0b010000

9
artiq/runtime.rs/libksupport/rtio.rs
View File

@ -1,6 +1,11 @@
#[path = "../src/kernel_proto.rs"]
mod kernel_proto;
use board::csr;
use core::ptr::{read_volatile, write_volatile};
use ::ArtiqList;
use ::send;
use kernel_proto::*;
const RTIO_O_STATUS_FULL: u32 = 1;
const RTIO_O_STATUS_UNDERFLOW: u32 = 2;
@ -11,9 +16,7 @@ const RTIO_I_STATUS_EMPTY: u32 = 1;
const RTIO_I_STATUS_OVERFLOW: u32 = 2;
pub extern fn init() {
unsafe {
csr::rtio::reset_write(1);
}
send(&RTIOInitRequest);
}
pub extern fn get_counter() -> i64 {

2
artiq/runtime.rs/src/kernel_proto.rs
View File

@ -30,6 +30,8 @@ pub enum Message<'a> {
NowInitReply(u64),
NowSave(u64),
RTIOInitRequest,
RunFinished,
RunException {
exception: Exception<'a>,

9
artiq/runtime.rs/src/session.rs
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@ -4,6 +4,7 @@ use std::cell::RefCell;
use std::io::{self, Read, Write, BufWriter};
use std::btree_set::BTreeSet;
use {config, rtio_crg, clock, mailbox, rpc_queue, kernel};
use board::csr; // TODO: centralize (D)RTIO management
use logger::BufferLogger;
use cache::Cache;
use urc::Urc;
@ -377,6 +378,14 @@ fn process_kern_message(waiter: Waiter,
kern_acknowledge()
}
&kern::RTIOInitRequest => {
info!("resetting RTIO");
unsafe {
csr::rtio_core::reset_write(1);
}
kern_acknowledge()
}
&kern::WatchdogSetRequest { ms } => {
let id = try!(session.watchdog_set.set_ms(ms)
.map_err(|()| io_error("out of watchdogs")));