799 lines
34 KiB
Python
799 lines
34 KiB
Python
"""
|
|
|
|
Copyright (c) 2020 Alex Forencich
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to deal
|
|
in the Software without restriction, including without limitation the rights
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
copies of the Software, and to permit persons to whom the Software is
|
|
furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included in
|
|
all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
THE SOFTWARE.
|
|
|
|
"""
|
|
|
|
from collections import deque, namedtuple, Counter
|
|
|
|
import cocotb
|
|
from cocotb.triggers import Event
|
|
from cocotb.log import SimLog
|
|
|
|
from .version import __version__
|
|
from .constants import AxiBurstType, AxiLockType, AxiProt, AxiResp
|
|
from .axi_channels import AxiAWSource, AxiWSource, AxiBSink, AxiARSource, AxiRSink
|
|
|
|
# AXI master write helper objects
|
|
AxiWriteCmd = namedtuple("AxiWriteCmd", ["address", "data", "awid", "burst", "size",
|
|
"lock", "cache", "prot", "qos", "region", "user", "token"])
|
|
AxiWriteRespCmd = namedtuple("AxiWriteRespCmd", ["address", "length", "size", "cycles",
|
|
"prot", "burst_list", "token"])
|
|
AxiWriteResp = namedtuple("AxiWriteResp", ["address", "length", "resp", "user", "token"])
|
|
|
|
# AXI master read helper objects
|
|
AxiReadCmd = namedtuple("AxiReadCmd", ["address", "length", "arid", "burst", "size",
|
|
"lock", "cache", "prot", "qos", "region", "user", "token"])
|
|
AxiReadRespCmd = namedtuple("AxiReadRespCmd", ["address", "length", "size", "cycles",
|
|
"prot", "burst_list", "token"])
|
|
AxiReadResp = namedtuple("AxiReadResp", ["address", "data", "resp", "user", "token"])
|
|
|
|
|
|
class AxiMasterWrite(object):
|
|
def __init__(self, entity, name, clock, reset=None, max_burst_len=256):
|
|
self.log = SimLog("cocotb.%s.%s" % (entity._name, name))
|
|
|
|
self.log.info("AXI master (write)")
|
|
self.log.info("cocotbext-axi version %s", __version__)
|
|
self.log.info("Copyright (c) 2020 Alex Forencich")
|
|
self.log.info("https://github.com/alexforencich/cocotbext-axi")
|
|
|
|
self.reset = reset
|
|
|
|
self.aw_channel = AxiAWSource(entity, name, clock, reset)
|
|
self.w_channel = AxiWSource(entity, name, clock, reset)
|
|
self.b_channel = AxiBSink(entity, name, clock, reset)
|
|
|
|
self.active_tokens = set()
|
|
|
|
self.write_command_queue = deque()
|
|
self.write_command_sync = Event()
|
|
self.write_resp_queue = deque()
|
|
self.write_resp_sync = Event()
|
|
self.write_resp_set = set()
|
|
|
|
self.id_count = 2**len(self.aw_channel.bus.awid)
|
|
self.cur_id = 0
|
|
self.active_id = Counter()
|
|
|
|
self.int_write_resp_command_queue = deque()
|
|
self.int_write_resp_command_sync = Event()
|
|
self.int_write_resp_queue_list = {}
|
|
|
|
self.in_flight_operations = 0
|
|
|
|
self.width = len(self.w_channel.bus.wdata)
|
|
self.byte_size = 8
|
|
self.byte_width = self.width // self.byte_size
|
|
self.strb_mask = 2**self.byte_width-1
|
|
|
|
self.max_burst_len = max(min(max_burst_len, 256), 1)
|
|
self.max_burst_size = (self.byte_width-1).bit_length()
|
|
|
|
self.log.info("AXI master configuration:")
|
|
self.log.info(" Address width: %d bits", len(self.aw_channel.bus.awaddr))
|
|
self.log.info(" ID width: %d bits", len(self.aw_channel.bus.awid))
|
|
self.log.info(" Byte size: %d bits", self.byte_size)
|
|
self.log.info(" Data width: %d bits (%d bytes)", self.width, self.byte_width)
|
|
self.log.info(" Max burst size: %d (%d bytes)", self.max_burst_size, 2**self.max_burst_size)
|
|
self.log.info(" Max burst length: %d cycles (%d bytes)",
|
|
self.max_burst_len, self.max_burst_len*self.byte_width)
|
|
|
|
assert self.byte_width == len(self.w_channel.bus.wstrb)
|
|
assert self.byte_width * self.byte_size == self.width
|
|
|
|
assert len(self.b_channel.bus.bid) == len(self.aw_channel.bus.awid)
|
|
|
|
cocotb.fork(self._process_write())
|
|
cocotb.fork(self._process_write_resp())
|
|
|
|
def init_write(self, address, data, awid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0, token=None):
|
|
if token is not None:
|
|
if token in self.active_tokens:
|
|
raise Exception("Token is not unique")
|
|
self.active_tokens.add(token)
|
|
|
|
if awid is None or awid < 0:
|
|
awid = None
|
|
elif awid > self.id_count:
|
|
raise ValueError("Requested ID exceeds maximum ID allowed for ID signal width")
|
|
|
|
burst = AxiBurstType(burst)
|
|
|
|
if size is None or size < 0:
|
|
size = self.max_burst_size
|
|
elif size > self.max_burst_size:
|
|
raise ValueError("Requested burst size exceeds maximum burst size allowed for bus width")
|
|
|
|
lock = AxiLockType(lock)
|
|
prot = AxiProt(prot)
|
|
|
|
self.in_flight_operations += 1
|
|
|
|
cmd = AxiWriteCmd(address, bytearray(data), awid, burst, size, lock, cache, prot, qos, region, user, token)
|
|
self.write_command_queue.append(cmd)
|
|
self.write_command_sync.set()
|
|
|
|
def idle(self):
|
|
return not self.in_flight_operations
|
|
|
|
async def wait(self):
|
|
while not self.idle():
|
|
self.write_resp_sync.clear()
|
|
await self.write_resp_sync.wait()
|
|
|
|
async def wait_for_token(self, token):
|
|
if token not in self.active_tokens:
|
|
return
|
|
while token not in self.write_resp_set:
|
|
self.write_resp_sync.clear()
|
|
await self.write_resp_sync.wait()
|
|
|
|
def write_resp_ready(self, token=None):
|
|
if token is not None:
|
|
return token in self.write_resp_set
|
|
return bool(self.write_resp_queue)
|
|
|
|
def get_write_resp(self, token=None):
|
|
if token is not None:
|
|
if token in self.write_resp_set:
|
|
for resp in self.write_resp_queue:
|
|
if resp.token == token:
|
|
self.write_resp_queue.remove(resp)
|
|
self.active_tokens.remove(resp.token)
|
|
self.write_resp_set.remove(resp.token)
|
|
return resp
|
|
return None
|
|
if self.write_resp_queue:
|
|
resp = self.write_resp_queue.popleft()
|
|
if resp.token is not None:
|
|
self.active_tokens.remove(resp.token)
|
|
self.write_resp_set.remove(resp.token)
|
|
return resp
|
|
return None
|
|
|
|
async def write(self, address, data, awid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
token = object()
|
|
self.init_write(address, data, awid, burst, size, lock, cache, prot, qos, region, user, token)
|
|
await self.wait_for_token(token)
|
|
return self.get_write_resp(token)
|
|
|
|
async def write_words(self, address, data, ws=2, awid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
words = data
|
|
data = bytearray()
|
|
for w in words:
|
|
data.extend(w.to_bytes(ws, 'little'))
|
|
await self.write(address, data, awid, burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def write_dwords(self, address, data, awid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
await self.write_words(address, data, 4, awid, burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def write_qwords(self, address, data, awid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
await self.write_words(address, data, 8, awid, burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def write_byte(self, address, data, awid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
await self.write(address, [data], awid, burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def write_word(self, address, data, ws=2, awid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
await self.write_words(address, [data], ws, awid, burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def write_dword(self, address, data, awid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
await self.write_dwords(address, [data], awid, burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def write_qword(self, address, data, awid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
await self.write_qwords(address, [data], awid, burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def _process_write(self):
|
|
while True:
|
|
if not self.write_command_queue:
|
|
self.write_command_sync.clear()
|
|
await self.write_command_sync.wait()
|
|
|
|
cmd = self.write_command_queue.popleft()
|
|
|
|
num_bytes = 2**cmd.size
|
|
|
|
aligned_addr = (cmd.address // num_bytes) * num_bytes
|
|
word_addr = (cmd.address // self.byte_width) * self.byte_width
|
|
|
|
start_offset = cmd.address % self.byte_width
|
|
end_offset = ((cmd.address + len(cmd.data) - 1) % self.byte_width) + 1
|
|
|
|
cycles = (len(cmd.data) + (cmd.address % num_bytes) + num_bytes-1) // num_bytes
|
|
|
|
cur_addr = aligned_addr
|
|
offset = 0
|
|
cycle_offset = aligned_addr-word_addr
|
|
n = 0
|
|
transfer_count = 0
|
|
|
|
burst_list = []
|
|
burst_length = 0
|
|
|
|
if cmd.awid is not None:
|
|
awid = cmd.awid
|
|
else:
|
|
awid = self.cur_id
|
|
self.cur_id = (self.cur_id+1) % self.id_count
|
|
|
|
self.log.info("Write start addr: 0x%08x awid: 0x%x prot: %s data: %s",
|
|
cmd.address, awid, cmd.prot, ' '.join((f'{c:02x}' for c in cmd.data)))
|
|
|
|
for k in range(cycles):
|
|
start = cycle_offset
|
|
stop = cycle_offset+num_bytes
|
|
|
|
if k == 0:
|
|
start = start_offset
|
|
if k == cycles-1:
|
|
stop = end_offset
|
|
|
|
strb = (self.strb_mask << start) & self.strb_mask & (self.strb_mask >> (self.byte_width - stop))
|
|
|
|
val = 0
|
|
for j in range(start, stop):
|
|
val |= cmd.data[offset] << j*8
|
|
offset += 1
|
|
|
|
if n >= burst_length:
|
|
transfer_count += 1
|
|
n = 0
|
|
|
|
# split on burst length
|
|
burst_length = min(cycles-k, min(max(self.max_burst_len, 1), 256))
|
|
# split on 4k address boundary
|
|
burst_length = (min(burst_length*num_bytes, 0x1000-(cur_addr & 0xfff))+num_bytes-1)//num_bytes
|
|
|
|
burst_list.append((awid, burst_length))
|
|
|
|
aw = self.aw_channel._transaction_obj()
|
|
aw.awid = awid
|
|
aw.awaddr = cur_addr
|
|
aw.awlen = burst_length-1
|
|
aw.awsize = cmd.size
|
|
aw.awburst = cmd.burst
|
|
aw.awlock = cmd.lock
|
|
aw.awcache = cmd.cache
|
|
aw.awprot = cmd.prot
|
|
aw.awqos = cmd.qos
|
|
aw.awregion = cmd.region
|
|
aw.awuser = cmd.user
|
|
|
|
self.active_id[awid] += 1
|
|
await self.aw_channel.drive(aw)
|
|
|
|
self.log.info("Write burst start awid: 0x%x awaddr: 0x%08x awlen: %d awsize: %d awprot: %s",
|
|
awid, cur_addr, burst_length-1, cmd.size, cmd.prot)
|
|
|
|
n += 1
|
|
|
|
w = self.w_channel._transaction_obj()
|
|
w.wdata = val
|
|
w.wstrb = strb
|
|
w.wlast = n >= burst_length
|
|
|
|
self.w_channel.send(w)
|
|
|
|
cur_addr += num_bytes
|
|
cycle_offset = (cycle_offset + num_bytes) % self.byte_width
|
|
|
|
resp_cmd = AxiWriteRespCmd(cmd.address, len(cmd.data), cmd.size, cycles, cmd.prot, burst_list, cmd.token)
|
|
self.int_write_resp_command_queue.append(resp_cmd)
|
|
self.int_write_resp_command_sync.set()
|
|
|
|
async def _process_write_resp(self):
|
|
while True:
|
|
if not self.int_write_resp_command_queue:
|
|
self.int_write_resp_command_sync.clear()
|
|
await self.int_write_resp_command_sync.wait()
|
|
|
|
cmd = self.int_write_resp_command_queue.popleft()
|
|
|
|
resp = AxiResp.OKAY
|
|
user = []
|
|
|
|
for bid, burst_length in cmd.burst_list:
|
|
self.int_write_resp_queue_list.setdefault(bid, deque())
|
|
while True:
|
|
if self.int_write_resp_queue_list[bid]:
|
|
break
|
|
|
|
await self.b_channel.wait()
|
|
b = self.b_channel.recv()
|
|
|
|
if self.active_id[int(b.bid)] <= 0:
|
|
raise Exception(f"Unexpected burst ID {bid}")
|
|
|
|
self.int_write_resp_queue_list[int(b.bid)].append(b)
|
|
|
|
b = self.int_write_resp_queue_list[bid].popleft()
|
|
|
|
burst_id = int(b.bid)
|
|
burst_resp = AxiResp(b.bresp)
|
|
burst_user = int(b.buser)
|
|
|
|
if burst_resp != AxiResp.OKAY:
|
|
resp = burst_resp
|
|
|
|
if burst_user is not None:
|
|
user.append(burst_user)
|
|
|
|
if self.active_id[bid] <= 0:
|
|
raise Exception(f"Unexpected burst ID {bid}")
|
|
|
|
self.active_id[bid] -= 1
|
|
|
|
self.log.info("Write burst complete bid: 0x%x bresp: %s", burst_id, burst_resp)
|
|
|
|
self.log.info("Write complete addr: 0x%08x prot: %s resp: %s length: %d",
|
|
cmd.address, cmd.prot, resp, cmd.length)
|
|
|
|
self.write_resp_queue.append(AxiWriteResp(cmd.address, cmd.length, resp, user, cmd.token))
|
|
self.write_resp_sync.set()
|
|
if cmd.token is not None:
|
|
self.write_resp_set.add(cmd.token)
|
|
self.in_flight_operations -= 1
|
|
|
|
|
|
class AxiMasterRead(object):
|
|
def __init__(self, entity, name, clock, reset=None, max_burst_len=256):
|
|
self.log = SimLog("cocotb.%s.%s" % (entity._name, name))
|
|
|
|
self.log.info("AXI master (read)")
|
|
self.log.info("cocotbext-axi version %s", __version__)
|
|
self.log.info("Copyright (c) 2020 Alex Forencich")
|
|
self.log.info("https://github.com/alexforencich/cocotbext-axi")
|
|
|
|
self.reset = reset
|
|
|
|
self.ar_channel = AxiARSource(entity, name, clock, reset)
|
|
self.r_channel = AxiRSink(entity, name, clock, reset)
|
|
|
|
self.active_tokens = set()
|
|
|
|
self.read_command_queue = deque()
|
|
self.read_command_sync = Event()
|
|
self.read_data_queue = deque()
|
|
self.read_data_sync = Event()
|
|
self.read_data_set = set()
|
|
|
|
self.id_count = 2**len(self.ar_channel.bus.arid)
|
|
self.cur_id = 0
|
|
self.active_id = Counter()
|
|
|
|
self.int_read_resp_command_queue = deque()
|
|
self.int_read_resp_command_sync = Event()
|
|
self.int_read_resp_queue_list = {}
|
|
|
|
self.in_flight_operations = 0
|
|
|
|
self.width = len(self.r_channel.bus.rdata)
|
|
self.byte_size = 8
|
|
self.byte_width = self.width // self.byte_size
|
|
|
|
self.max_burst_len = max(min(max_burst_len, 256), 1)
|
|
self.max_burst_size = (self.byte_width-1).bit_length()
|
|
|
|
self.log.info("AXI master configuration:")
|
|
self.log.info(" Address width: %d bits", len(self.ar_channel.bus.araddr))
|
|
self.log.info(" ID width: %d bits", len(self.ar_channel.bus.arid))
|
|
self.log.info(" Byte size: %d bits", self.byte_size)
|
|
self.log.info(" Data width: %d bits (%d bytes)", self.width, self.byte_width)
|
|
self.log.info(" Max burst size: %d (%d bytes)", self.max_burst_size, 2**self.max_burst_size)
|
|
self.log.info(" Max burst length: %d cycles (%d bytes)",
|
|
self.max_burst_len, self.max_burst_len*self.byte_width)
|
|
|
|
assert self.byte_width * self.byte_size == self.width
|
|
|
|
assert len(self.r_channel.bus.rid) == len(self.ar_channel.bus.arid)
|
|
|
|
cocotb.fork(self._process_read())
|
|
cocotb.fork(self._process_read_resp())
|
|
|
|
def init_read(self, address, length, arid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0, token=None):
|
|
if token is not None:
|
|
if token in self.active_tokens:
|
|
raise Exception("Token is not unique")
|
|
self.active_tokens.add(token)
|
|
|
|
if arid is None or arid < 0:
|
|
arid = None
|
|
elif arid > self.id_count:
|
|
raise ValueError("Requested ID exceeds maximum ID allowed for ID signal width")
|
|
|
|
burst = AxiBurstType(burst)
|
|
|
|
if size is None or size < 0:
|
|
size = self.max_burst_size
|
|
elif size > self.max_burst_size:
|
|
raise ValueError("Requested burst size exceeds maximum burst size allowed for bus width")
|
|
|
|
lock = AxiLockType(lock)
|
|
prot = AxiProt(prot)
|
|
|
|
self.in_flight_operations += 1
|
|
|
|
cmd = AxiReadCmd(address, length, arid, burst, size, lock, cache, prot, qos, region, user, token)
|
|
self.read_command_queue.append(cmd)
|
|
self.read_command_sync.set()
|
|
|
|
def idle(self):
|
|
return not self.in_flight_operations
|
|
|
|
async def wait(self):
|
|
while not self.idle():
|
|
self.read_resp_sync.clear()
|
|
await self.read_resp_sync.wait()
|
|
|
|
async def wait_for_token(self, token):
|
|
if token not in self.active_tokens:
|
|
return
|
|
while token not in self.read_data_set:
|
|
self.read_data_sync.clear()
|
|
await self.read_data_sync.wait()
|
|
|
|
def read_data_ready(self, token=None):
|
|
if token is not None:
|
|
return token in self.read_data_set
|
|
return bool(self.read_data_queue)
|
|
|
|
def get_read_data(self, token=None):
|
|
if token is not None:
|
|
if token in self.read_data_set:
|
|
for resp in self.read_data_queue:
|
|
if resp.token == token:
|
|
self.read_data_queue.remove(resp)
|
|
self.active_tokens.remove(resp.token)
|
|
self.read_data_set.remove(resp.token)
|
|
return resp
|
|
return None
|
|
if self.read_data_queue:
|
|
resp = self.read_data_queue.popleft()
|
|
if resp.token is not None:
|
|
self.active_tokens.remove(resp.token)
|
|
self.read_data_set.remove(resp.token)
|
|
return resp
|
|
return None
|
|
|
|
async def read(self, address, length, arid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
token = object()
|
|
self.init_read(address, length, arid, burst, size, lock, cache, prot, qos, region, user, token)
|
|
await self.wait_for_token(token)
|
|
return self.get_read_data(token)
|
|
|
|
async def read_words(self, address, count, ws=2, arid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
data = await self.read(address, count*ws, burst, size, lock, cache, prot, qos, region, user)
|
|
words = []
|
|
for k in range(count):
|
|
words.append(int.from_bytes(data.data[ws*k:ws*(k+1)], 'little'))
|
|
return words
|
|
|
|
async def read_dwords(self, address, count, arid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return await self.read_words(address, count, 4, arid, burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def read_qwords(self, address, count, arid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return await self.read_words(address, count, 8, arid, burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def read_byte(self, address, arid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return (await self.read(address, 1, arid, burst, size, lock, cache, prot, qos, region, user)).data[0]
|
|
|
|
async def read_word(self, address, ws=2, arid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return (await self.read_words(address, 1, ws, arid, burst, size, lock, cache, prot, qos, region, user))[0]
|
|
|
|
async def read_dword(self, address, arid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return (await self.read_dwords(address, 1, arid, burst, size, lock, cache, prot, qos, region, user))[0]
|
|
|
|
async def read_qword(self, address, arid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return (await self.read_qwords(address, 1, arid, burst, size, lock, cache, prot, qos, region, user))[0]
|
|
|
|
async def _process_read(self):
|
|
while True:
|
|
if not self.read_command_queue:
|
|
self.read_command_sync.clear()
|
|
await self.read_command_sync.wait()
|
|
|
|
cmd = self.read_command_queue.popleft()
|
|
|
|
num_bytes = 2**cmd.size
|
|
|
|
aligned_addr = (cmd.address // num_bytes) * num_bytes
|
|
|
|
cycles = (cmd.length + num_bytes-1 + (cmd.address % num_bytes)) // num_bytes
|
|
|
|
burst_list = []
|
|
|
|
cur_addr = aligned_addr
|
|
n = 0
|
|
|
|
burst_length = 0
|
|
|
|
if cmd.arid is not None:
|
|
arid = cmd.arid
|
|
else:
|
|
arid = self.cur_id
|
|
self.cur_id = (self.cur_id+1) % self.id_count
|
|
|
|
self.log.info("Read start addr: 0x%08x arid: 0x%x prot: %s", cmd.address, arid, cmd.prot)
|
|
|
|
for k in range(cycles):
|
|
|
|
n += 1
|
|
if n >= burst_length:
|
|
n = 0
|
|
|
|
# split on burst length
|
|
burst_length = min(cycles-k, min(max(self.max_burst_len, 1), 256))
|
|
# split on 4k address boundary
|
|
burst_length = (min(burst_length*num_bytes, 0x1000-(cur_addr & 0xfff))+num_bytes-1)//num_bytes
|
|
|
|
burst_list.append((arid, burst_length))
|
|
|
|
ar = self.r_channel._transaction_obj()
|
|
ar.arid = arid
|
|
ar.araddr = cur_addr
|
|
ar.arlen = burst_length-1
|
|
ar.arsize = cmd.size
|
|
ar.arburst = cmd.burst
|
|
ar.arlock = cmd.lock
|
|
ar.arcache = cmd.cache
|
|
ar.arprot = cmd.prot
|
|
ar.arqos = cmd.qos
|
|
ar.arregion = cmd.region
|
|
ar.aruser = cmd.user
|
|
|
|
self.active_id[arid] += 1
|
|
await self.ar_channel.drive(ar)
|
|
|
|
self.log.info("Read burst start arid: 0x%x araddr: 0x%08x arlen: %d arsize: %d arprot: %s",
|
|
arid, cur_addr, burst_length-1, cmd.size, cmd.prot)
|
|
|
|
cur_addr += num_bytes
|
|
|
|
resp_cmd = AxiReadRespCmd(cmd.address, cmd.length, cmd.size, cycles, cmd.prot, burst_list, cmd.token)
|
|
self.int_read_resp_command_queue.append(resp_cmd)
|
|
self.int_read_resp_command_sync.set()
|
|
|
|
async def _process_read_resp(self):
|
|
while True:
|
|
if not self.int_read_resp_command_queue:
|
|
self.int_read_resp_command_sync.clear()
|
|
await self.int_read_resp_command_sync.wait()
|
|
|
|
cmd = self.int_read_resp_command_queue.popleft()
|
|
|
|
num_bytes = 2**cmd.size
|
|
|
|
aligned_addr = (cmd.address // num_bytes) * num_bytes
|
|
word_addr = (cmd.address // self.byte_width) * self.byte_width
|
|
|
|
start_offset = cmd.address % self.byte_width
|
|
|
|
cycle_offset = aligned_addr - word_addr
|
|
data = bytearray()
|
|
|
|
resp = AxiResp.OKAY
|
|
user = []
|
|
|
|
first = True
|
|
|
|
for rid, burst_length in cmd.burst_list:
|
|
for k in range(burst_length):
|
|
self.int_read_resp_queue_list.setdefault(rid, deque())
|
|
while True:
|
|
if self.int_read_resp_queue_list[rid]:
|
|
break
|
|
|
|
await self.r_channel.wait()
|
|
r = self.r_channel.recv()
|
|
|
|
if self.active_id[int(r.rid)] <= 0:
|
|
raise Exception(f"Unexpected burst ID {rid}")
|
|
|
|
self.int_read_resp_queue_list[int(r.rid)].append(r)
|
|
|
|
r = self.int_read_resp_queue_list[rid].popleft()
|
|
|
|
cycle_id = int(r.rid)
|
|
cycle_data = int(r.rdata)
|
|
cycle_resp = AxiResp(r.rresp)
|
|
cycle_last = int(r.rlast)
|
|
cycle_user = int(r.ruser)
|
|
|
|
if cycle_resp != AxiResp.OKAY:
|
|
resp = cycle_resp
|
|
|
|
if cycle_user is not None:
|
|
user.append(cycle_user)
|
|
|
|
start = cycle_offset
|
|
stop = cycle_offset+num_bytes
|
|
|
|
if first:
|
|
start = start_offset
|
|
|
|
assert cycle_last == (k == burst_length - 1)
|
|
|
|
for j in range(start, stop):
|
|
data.append((cycle_data >> j*8) & 0xff)
|
|
|
|
cycle_offset = (cycle_offset + num_bytes) % self.byte_width
|
|
|
|
first = False
|
|
|
|
if self.active_id[rid] <= 0:
|
|
raise Exception(f"Unexpected burst ID {rid}")
|
|
|
|
self.active_id[rid] -= 1
|
|
|
|
self.log.info("Read burst complete rid: 0x%x rresp: %s", cycle_id, resp)
|
|
|
|
data = data[:cmd.length]
|
|
|
|
self.log.info("Read complete addr: 0x%08x prot: %s resp: %s data: %s",
|
|
cmd.address, cmd.prot, resp, ' '.join((f'{c:02x}' for c in data)))
|
|
|
|
self.read_data_queue.append(AxiReadResp(cmd.address, data, resp, user, cmd.token))
|
|
self.read_data_sync.set()
|
|
if cmd.token is not None:
|
|
self.read_data_set.add(cmd.token)
|
|
self.in_flight_operations -= 1
|
|
|
|
|
|
class AxiMaster(object):
|
|
def __init__(self, entity, name, clock, reset=None, max_burst_len=256):
|
|
self.write_if = None
|
|
self.read_if = None
|
|
|
|
self.write_if = AxiMasterWrite(entity, name, clock, reset, max_burst_len)
|
|
self.read_if = AxiMasterRead(entity, name, clock, reset, max_burst_len)
|
|
|
|
def init_read(self, address, length, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0, token=None):
|
|
self.read_if.init_read(address, length, burst, size, lock, cache, prot, qos, region, user, token)
|
|
|
|
def init_write(self, address, data, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0, token=None):
|
|
self.write_if.init_write(address, data, burst, size, lock, cache, prot, qos, region, user, token)
|
|
|
|
def idle(self):
|
|
return (not self.read_if or self.read_if.idle()) and (not self.write_if or self.write_if.idle())
|
|
|
|
async def wait(self):
|
|
while not self.idle():
|
|
await self.write_if.wait()
|
|
await self.read_if.wait()
|
|
|
|
async def wait_read(self):
|
|
await self.read_if.wait()
|
|
|
|
async def wait_write(self):
|
|
await self.write_if.wait()
|
|
|
|
def read_data_ready(self, token=None):
|
|
return self.read_if.read_data_ready(token)
|
|
|
|
def get_read_data(self, token=None):
|
|
return self.read_if.get_read_data(token)
|
|
|
|
def write_resp_ready(self, token=None):
|
|
return self.write_if.write_resp_ready(token)
|
|
|
|
def get_write_resp(self, token=None):
|
|
return self.write_if.get_write_resp(token)
|
|
|
|
async def read(self, address, length, arid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return await self.read_if.read(address, length, arid,
|
|
burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def read_words(self, address, count, ws=2, arid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return await self.read_if.read_words(address, count, ws, arid,
|
|
burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def read_dwords(self, address, count, arid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return await self.read_if.read_dwords(address, count, arid,
|
|
burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def read_qwords(self, address, count, arid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return await self.read_if.read_qwords(address, count, arid,
|
|
burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def read_byte(self, address, arid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return await self.read_if.read_byte(address, arid,
|
|
burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def read_word(self, address, ws=2, arid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return await self.read_if.read_word(address, ws, arid,
|
|
burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def read_dword(self, address, arid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return await self.read_if.read_dword(address, arid,
|
|
burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def read_qword(self, address, arid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return await self.read_if.read_qword(address, arid,
|
|
burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def write(self, address, data, awid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return await self.write_if.write(address, data, awid,
|
|
burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def write_words(self, address, data, ws=2, awid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return await self.write_if.write_words(address, data, ws, awid,
|
|
burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def write_dwords(self, address, data, awid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return await self.write_if.write_dwords(address, data, awid,
|
|
burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def write_qwords(self, address, data, awid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return await self.write_if.write_qwords(address, data, awid,
|
|
burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def write_byte(self, address, data, awid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return await self.write_if.write_byte(address, data, awid,
|
|
burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def write_word(self, address, data, ws=2, awid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return await self.write_if.write_word(address, data, ws, awid,
|
|
burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def write_dword(self, address, data, awid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return await self.write_if.write_dword(address, data, awid,
|
|
burst, size, lock, cache, prot, qos, region, user)
|
|
|
|
async def write_qword(self, address, data, awid=None, burst=AxiBurstType.INCR, size=None,
|
|
lock=AxiLockType.NORMAL, cache=0b0011, prot=AxiProt.NONSECURE, qos=0, region=0, user=0):
|
|
return await self.write_if.write_qword(address, data, awid,
|
|
burst, size, lock, cache, prot, qos, region, user)
|