mirror of
https://github.com/AsahiLinux/m1n1
synced 2024-11-26 16:30:17 +00:00
87 lines
2.6 KiB
Python
Executable file
87 lines
2.6 KiB
Python
Executable file
#!/usr/bin/env python3
|
|
# SPDX-License-Identifier: MIT
|
|
import sys, pathlib
|
|
import time
|
|
sys.path.append(str(pathlib.Path(__file__).resolve().parents[1]))
|
|
|
|
import argparse
|
|
from m1n1.hw.dart import DART
|
|
from m1n1.hw.admac import *
|
|
|
|
argparser = argparse.ArgumentParser()
|
|
argparser.add_argument("-b", "--bufsize", type=int, default=1024*32,
|
|
help="size of one DMA buffer (covered by one descriptor)")
|
|
argparser.add_argument("-n", "--node", type=str, default="admac-sio",
|
|
help="name of ADT node")
|
|
argparser.add_argument("-c", "--chan", "--channel", type=int, default=0,
|
|
help="channel no")
|
|
argparser.add_argument("-w", "--buswidth", type=E_BUSWIDTH, default=E_BUSWIDTH.W_32BIT,
|
|
help="DMA device-facing bus width")
|
|
argparser.add_argument("-v", "--verbose", action='store_true')
|
|
args = argparser.parse_args()
|
|
|
|
from m1n1.setup import p, u
|
|
|
|
# find full ADT path
|
|
path = None
|
|
for node in u.adt["/arm-io"]:
|
|
if node.name == args.node:
|
|
path = node._path.removeprefix("/device-tree")
|
|
print(f"Found {path}", file=sys.stderr)
|
|
if "clock-gates" in node._properties:
|
|
print(f"Enabling {path}", file=sys.stderr)
|
|
p.pmgr_adt_clocks_enable(path)
|
|
break
|
|
|
|
if path is None:
|
|
print(f"No instance named {args.node:r} found!", file=sys.stderr)
|
|
sys.exit(1)
|
|
|
|
admac_node = u.adt[path]
|
|
|
|
iommu_mappers = dict()
|
|
for node in u.adt["/arm-io"].walk_tree():
|
|
if "compatible" in node._properties and node.compatible == ["iommu-mapper"]:
|
|
iommu_mappers[getattr(node, "AAPL,phandle")] = node
|
|
|
|
mapper = iommu_mappers[admac_node.iommu_parent]
|
|
dart_path = mapper._parent_path.removeprefix("/device-tree")[:-1]
|
|
dart_idx = mapper.reg
|
|
|
|
if "clock-gates" in u.adt[dart_path]._properties:
|
|
print(f"Enabling {dart_path}", file=sys.stderr)
|
|
p.pmgr_adt_clocks_enable(path)
|
|
|
|
dart = DART.from_adt(u, dart_path)
|
|
admac = ADMAC(u, admac_node.get_reg(0)[0], dart,
|
|
dart_stream=dart_idx, debug=args.verbose)
|
|
|
|
chan = admac.chans[args.chan]
|
|
chan.disable()
|
|
chan.reset()
|
|
chan.read_reports()
|
|
chan.buswidth = args.buswidth
|
|
chan.framesize = E_FRAME.F_1_WORD
|
|
chan.sram_carveout = (0x0, 0x1000)
|
|
|
|
if chan.tx:
|
|
chan.submit(bytearray(args.bufsize))
|
|
else:
|
|
chan.submit(buflen=args.bufsize)
|
|
chan.enable()
|
|
|
|
try:
|
|
if chan.tx:
|
|
while (buf := sys.stdin.buffer.read(args.bufsize)):
|
|
while not chan.can_submit():
|
|
chan.poll()
|
|
chan.submit(buf)
|
|
else:
|
|
while True:
|
|
while chan.can_submit():
|
|
chan.submit(buflen=args.bufsize)
|
|
sys.stdout.buffer.write(chan.poll())
|
|
except KeyboardInterrupt:
|
|
pass
|
|
|
|
chan.disable()
|