Device.py revision 8742:9df38d259935
16313Sgblack@eecs.umich.edu# Copyright (c) 2005-2007 The Regents of The University of Michigan 211574SCurtis.Dunham@arm.com# All rights reserved. 37093Sgblack@eecs.umich.edu# 47093Sgblack@eecs.umich.edu# Redistribution and use in source and binary forms, with or without 57093Sgblack@eecs.umich.edu# modification, are permitted provided that the following conditions are 67093Sgblack@eecs.umich.edu# met: redistributions of source code must retain the above copyright 77093Sgblack@eecs.umich.edu# notice, this list of conditions and the following disclaimer; 87093Sgblack@eecs.umich.edu# redistributions in binary form must reproduce the above copyright 97093Sgblack@eecs.umich.edu# notice, this list of conditions and the following disclaimer in the 107093Sgblack@eecs.umich.edu# documentation and/or other materials provided with the distribution; 117093Sgblack@eecs.umich.edu# neither the name of the copyright holders nor the names of its 127093Sgblack@eecs.umich.edu# contributors may be used to endorse or promote products derived from 137093Sgblack@eecs.umich.edu# this software without specific prior written permission. 146313Sgblack@eecs.umich.edu# 156313Sgblack@eecs.umich.edu# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 166313Sgblack@eecs.umich.edu# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 176313Sgblack@eecs.umich.edu# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 186313Sgblack@eecs.umich.edu# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 196313Sgblack@eecs.umich.edu# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 206313Sgblack@eecs.umich.edu# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 216313Sgblack@eecs.umich.edu# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 226313Sgblack@eecs.umich.edu# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 236313Sgblack@eecs.umich.edu# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 246313Sgblack@eecs.umich.edu# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 256313Sgblack@eecs.umich.edu# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 266313Sgblack@eecs.umich.edu# 276313Sgblack@eecs.umich.edu# Authors: Nathan Binkert 286313Sgblack@eecs.umich.edu 296313Sgblack@eecs.umich.edufrom m5.params import * 306313Sgblack@eecs.umich.edufrom m5.proxy import * 316313Sgblack@eecs.umich.edufrom MemObject import MemObject 326313Sgblack@eecs.umich.edu 336313Sgblack@eecs.umich.educlass PioDevice(MemObject): 346313Sgblack@eecs.umich.edu type = 'PioDevice' 356313Sgblack@eecs.umich.edu abstract = True 366313Sgblack@eecs.umich.edu pio = Port("Programmed I/O port") 376313Sgblack@eecs.umich.edu system = Param.System(Parent.any, "System this device is part of") 386313Sgblack@eecs.umich.edu 396313Sgblack@eecs.umich.educlass BasicPioDevice(PioDevice): 406313Sgblack@eecs.umich.edu type = 'BasicPioDevice' 416313Sgblack@eecs.umich.edu abstract = True 426313Sgblack@eecs.umich.edu pio_addr = Param.Addr("Device Address") 436313Sgblack@eecs.umich.edu pio_latency = Param.Latency('1ns', "Programmed IO latency in simticks") 447404SAli.Saidi@ARM.com 456313Sgblack@eecs.umich.educlass DmaDevice(PioDevice): 4610461SAndreas.Sandberg@ARM.com type = 'DmaDevice' 476333Sgblack@eecs.umich.edu abstract = True 4810037SARM gem5 Developers dma = Port(Self.pio.peerObj.port, "DMA port") 497404SAli.Saidi@ARM.com min_backoff_delay = Param.Latency('4ns', 506313Sgblack@eecs.umich.edu "min time between a nack packet being received and the next request made by the device") 518232Snate@binkert.org max_backoff_delay = Param.Latency('10us', 529384SAndreas.Sandberg@arm.com "max time between a nack packet being received and the next request made by the device") 5311165SRekai.GonzalezAlberquilla@arm.com 546313Sgblack@eecs.umich.edu 559384SAndreas.Sandberg@arm.com 5610461SAndreas.Sandberg@ARM.comclass IsaFake(BasicPioDevice): 576333Sgblack@eecs.umich.edu type = 'IsaFake' 586313Sgblack@eecs.umich.edu pio_size = Param.Addr(0x8, "Size of address range") 596313Sgblack@eecs.umich.edu ret_data8 = Param.UInt8(0xFF, "Default data to return") 606313Sgblack@eecs.umich.edu ret_data16 = Param.UInt16(0xFFFF, "Default data to return") 616313Sgblack@eecs.umich.edu ret_data32 = Param.UInt32(0xFFFFFFFF, "Default data to return") 626313Sgblack@eecs.umich.edu ret_data64 = Param.UInt64(0xFFFFFFFFFFFFFFFF, "Default data to return") 6310037SARM gem5 Developers ret_bad_addr = Param.Bool(False, "Return pkt status bad address on access") 6410037SARM gem5 Developers update_data = Param.Bool(False, "Update the data that is returned on writes") 6510037SARM gem5 Developers warn_access = Param.String("", "String to print when device is accessed") 6610037SARM gem5 Developers fake_mem = Param.Bool(False, 6710037SARM gem5 Developers "Is this device acting like a memory and thus may get a cache line sized req") 6810037SARM gem5 Developers 6910037SARM gem5 Developersclass BadAddr(IsaFake): 7010037SARM gem5 Developers pio_addr = 0 7110037SARM gem5 Developers ret_bad_addr = Param.Bool(True, "Return pkt status bad address on access") 7210037SARM gem5 Developers 7310037SARM gem5 Developers 7410037SARM gem5 Developers