def _handleGetReservedAddrInfoRequest(self, request):
chipsLog.debug("Reserved Address Info transaction requested")
# Response header is the request header but with the Info Code field changed to INFO_CODE_RESPONSE
responseHeader = IPbusHeader.updateInfoCode(request.getHeader(), IPbusHeader.INFO_CODE_RESPONSE)
responseHeader = IPbusHeader.updateWords(responseHeader, 2)
# Returning zeros for the response body, as no real idea what else it should be.
return TransactionElement.makeFromHeaderAndBody(responseHeader, [0,0])
def _handleReadRequest(self, request):
requestHeader = request.getHeader()
words = IPbusHeader.getWords(requestHeader)
baseAddr = request.getBody()[0]
chipsLog.debug("Read requested on Addr=0x" + uInt32HexStr(baseAddr))
# Response header is the request header but with the Info Code field changed to INFO_CODE_RESPONSE
responseHeader = IPbusHeader.updateInfoCode(
requestHeader, IPbusHeader.INFO_CODE_RESPONSE)
# The (baseAddr & 0xffffffff) forces baseAddr to be in unsigned form (i.e. 0xfffffffc, say, rather than -4)
if (
baseAddr & 0xffffffff
) == 0xffffffff: # A read on this register is a Dummy Hardware Reset Request.
chipsLog.info(
"** Dummy Hardware reset request received! Zeroing all registers. **"
)
self._registers.clear()
responseBody = []
appendToResponseBody = responseBody.append # This is for a speed optimisation
for offset in range(words):
currentReg = baseAddr + offset
# Create these registers if they don't already exist.
if currentReg not in self._registers:
self._registers[currentReg] = 0
appendToResponseBody(self._registers[currentReg])
return TransactionElement.makeFromHeaderAndBody(
responseHeader, responseBody)
def _handleGetReservedAddrInfoRequest(self, request):
chipsLog.debug("Reserved Address Info transaction requested")
# Response header is the request header but with the Info Code field changed to INFO_CODE_RESPONSE
responseHeader = IPbusHeader.updateInfoCode(
request.getHeader(), IPbusHeader.INFO_CODE_RESPONSE)
responseHeader = IPbusHeader.updateWords(responseHeader, 2)
# Returning zeros for the response body, as no real idea what else it should be.
return TransactionElement.makeFromHeaderAndBody(responseHeader, [0, 0])
def _handleWriteRequest(self, request):
requestHeader = request.getHeader()
words = IPbusHeader.getWords(requestHeader)
requestBody = request.getBody()
baseAddr = requestBody[0]
chipsLog.debug("Write requested on Addr=0x" + uInt32HexStr(baseAddr))
# Response header is the request header but with the Info Code field changed to INFO_CODE_RESPONSE
responseHeader = IPbusHeader.updateInfoCode(requestHeader, IPbusHeader.INFO_CODE_RESPONSE)
for offset in range(words):
currentReg = baseAddr + offset
self._registers[currentReg] = requestBody[offset + 1]
return TransactionElement.makeFromHeaderAndBody(responseHeader)
def _handleFifoWriteRequest(self, request):
requestHeader = request.getHeader()
requestBody = request.getBody()
fifoAddr = requestBody[0]
chipsLog.debug("FIFO write requested on Addr=0x" + uInt32HexStr(fifoAddr))
# Response header is the request header but with the Info Code field changed to INFO_CODE_RESPONSE
responseHeader = IPbusHeader.updateInfoCode(requestHeader, IPbusHeader.INFO_CODE_RESPONSE)
# Obviously we don't really have a FIFO, we just have a single register at the address of the supposed
# FIFO. So, whatever the last value written into the FIFO is, this will be the value this register will
# take. We ignore all the previous "writes" to the FIFO.
self._registers[fifoAddr] = requestBody[-1]
return TransactionElement.makeFromHeaderAndBody(responseHeader)
def _handleWriteRequest(self, request):
requestHeader = request.getHeader()
words = IPbusHeader.getWords(requestHeader)
requestBody = request.getBody()
baseAddr = requestBody[0]
chipsLog.debug("Write requested on Addr=0x" + uInt32HexStr(baseAddr))
# Response header is the request header but with the Info Code field changed to INFO_CODE_RESPONSE
responseHeader = IPbusHeader.updateInfoCode(
requestHeader, IPbusHeader.INFO_CODE_RESPONSE)
for offset in range(words):
currentReg = baseAddr + offset
self._registers[currentReg] = requestBody[offset + 1]
return TransactionElement.makeFromHeaderAndBody(responseHeader)
def _handleReadModifyWriteSumRequest(self, request):
requestBody = request.getBody()
addr = requestBody[0]
addend = requestBody[1] # The value we add to the existing value
chipsLog.debug("Read/Modify/Write-sum requested on Addr=0x" + uInt32HexStr(addr))
# Create the register if it doesn't already exist.
if addr not in self._registers: self._registers[addr] = 0
updatedValue = (self._registers[addr] + addend) & 0xffffffff
self._registers[addr] = updatedValue
# Response header is the request header but with the Info Code field changed to INFO_CODE_RESPONSE
responseHeader = IPbusHeader.updateInfoCode(request.getHeader(), IPbusHeader.INFO_CODE_RESPONSE)
return TransactionElement.makeFromHeaderAndBody(responseHeader, [updatedValue])
def _handleReadModifyWriteBitsRequest(self, request):
requestBody = request.getBody()
addr = requestBody[0]
andTerm = requestBody[1] # The and term is the bitwise complement of the register mask (i.e. mask = ~andTerm)
orTerm = requestBody[2]
chipsLog.debug("Read/Modify/Write-bits requested on Addr=0x" + uInt32HexStr(addr))
# Create the register if it doesn't already exist.
if addr not in self._registers: self._registers[addr] = 0
updatedValue = (self._registers[addr] & andTerm) | (orTerm)
self._registers[addr] = updatedValue
# Response header is the request header but with the Info Code field changed to INFO_CODE_RESPONSE
responseHeader = IPbusHeader.updateInfoCode(request.getHeader(), IPbusHeader.INFO_CODE_RESPONSE)
return TransactionElement.makeFromHeaderAndBody(responseHeader, [updatedValue])
def _handleFifoWriteRequest(self, request):
requestHeader = request.getHeader()
requestBody = request.getBody()
fifoAddr = requestBody[0]
chipsLog.debug("FIFO write requested on Addr=0x" +
uInt32HexStr(fifoAddr))
# Response header is the request header but with the Info Code field changed to INFO_CODE_RESPONSE
responseHeader = IPbusHeader.updateInfoCode(
requestHeader, IPbusHeader.INFO_CODE_RESPONSE)
# Obviously we don't really have a FIFO, we just have a single register at the address of the supposed
# FIFO. So, whatever the last value written into the FIFO is, this will be the value this register will
# take. We ignore all the previous "writes" to the FIFO.
self._registers[fifoAddr] = requestBody[-1]
return TransactionElement.makeFromHeaderAndBody(responseHeader)
def _handleFifoReadRequest(self, request):
requestHeader = request.getHeader()
words = IPbusHeader.getWords(requestHeader)
fifoAddr = request.getBody()[0]
chipsLog.debug("FIFO read requested on Addr=0x" + uInt32HexStr(fifoAddr))
# Response header is the request header but with the Info Code field changed to INFO_CODE_RESPONSE
responseHeader = IPbusHeader.updateInfoCode(requestHeader, IPbusHeader.INFO_CODE_RESPONSE)
# Create the register if they don't already exist in our memory space
if fifoAddr not in self._registers:
self._registers[fifoAddr] = 0
# Obviously we don't really have a FIFO, so we'll just have to return the value stored
# at the FIFO's address many times...
value = self._registers[fifoAddr]
responseBody = [value for iReads in range(words)]
return TransactionElement.makeFromHeaderAndBody(responseHeader, responseBody)
def _handleReadModifyWriteSumRequest(self, request):
requestBody = request.getBody()
addr = requestBody[0]
addend = requestBody[1] # The value we add to the existing value
chipsLog.debug("Read/Modify/Write-sum requested on Addr=0x" +
uInt32HexStr(addr))
# Create the register if it doesn't already exist.
if addr not in self._registers: self._registers[addr] = 0
updatedValue = (self._registers[addr] + addend) & 0xffffffff
self._registers[addr] = updatedValue
# Response header is the request header but with the Info Code field changed to INFO_CODE_RESPONSE
responseHeader = IPbusHeader.updateInfoCode(
request.getHeader(), IPbusHeader.INFO_CODE_RESPONSE)
return TransactionElement.makeFromHeaderAndBody(
responseHeader, [updatedValue])
def _handleReadModifyWriteBitsRequest(self, request):
requestBody = request.getBody()
addr = requestBody[0]
andTerm = requestBody[
1] # The and term is the bitwise complement of the register mask (i.e. mask = ~andTerm)
orTerm = requestBody[2]
chipsLog.debug("Read/Modify/Write-bits requested on Addr=0x" +
uInt32HexStr(addr))
# Create the register if it doesn't already exist.
if addr not in self._registers: self._registers[addr] = 0
updatedValue = (self._registers[addr] & andTerm) | (orTerm)
self._registers[addr] = updatedValue
# Response header is the request header but with the Info Code field changed to INFO_CODE_RESPONSE
responseHeader = IPbusHeader.updateInfoCode(
request.getHeader(), IPbusHeader.INFO_CODE_RESPONSE)
return TransactionElement.makeFromHeaderAndBody(
responseHeader, [updatedValue])
def _handleFifoReadRequest(self, request):
requestHeader = request.getHeader()
words = IPbusHeader.getWords(requestHeader)
fifoAddr = request.getBody()[0]
chipsLog.debug("FIFO read requested on Addr=0x" +
uInt32HexStr(fifoAddr))
# Response header is the request header but with the Info Code field changed to INFO_CODE_RESPONSE
responseHeader = IPbusHeader.updateInfoCode(
requestHeader, IPbusHeader.INFO_CODE_RESPONSE)
# Create the register if they don't already exist in our memory space
if fifoAddr not in self._registers:
self._registers[fifoAddr] = 0
# Obviously we don't really have a FIFO, so we'll just have to return the value stored
# at the FIFO's address many times...
value = self._registers[fifoAddr]
responseBody = [value for iReads in range(words)]
return TransactionElement.makeFromHeaderAndBody(
responseHeader, responseBody)
def _handleReadRequest(self, request):
requestHeader = request.getHeader()
words = IPbusHeader.getWords(requestHeader)
baseAddr = request.getBody()[0]
chipsLog.debug("Read requested on Addr=0x" + uInt32HexStr(baseAddr))
# Response header is the request header but with the Info Code field changed to INFO_CODE_RESPONSE
responseHeader = IPbusHeader.updateInfoCode(requestHeader, IPbusHeader.INFO_CODE_RESPONSE)
# The (baseAddr & 0xffffffff) forces baseAddr to be in unsigned form (i.e. 0xfffffffc, say, rather than -4)
if (baseAddr & 0xffffffff) == 0xffffffff: # A read on this register is a Dummy Hardware Reset Request.
chipsLog.info("** Dummy Hardware reset request received! Zeroing all registers. **")
self._registers.clear()
responseBody = []
appendToResponseBody = responseBody.append # This is for a speed optimisation
for offset in range(words):
currentReg = baseAddr + offset
# Create these registers if they don't already exist.
if currentReg not in self._registers:
self._registers[currentReg] = 0
appendToResponseBody(self._registers[currentReg])
return TransactionElement.makeFromHeaderAndBody(responseHeader, responseBody)
