cf5935445f
This patch addresses a previously highlighted issue with the default latencies used for PIO and PCI devices. The values are merely educated guesses and might not represent the particular system you want to model. However, the values in this patch are definitely far more realistic than the previous ones. In i8254xGBe, the writeConfig method is updated to use configDelay instead of pioDelay. A follow-up patch will update the regression stats.
95 lines
4.7 KiB
Python
95 lines
4.7 KiB
Python
# Copyright (c) 2005-2007 The Regents of The University of Michigan
|
|
# All rights reserved.
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions are
|
|
# met: redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer;
|
|
# redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution;
|
|
# neither the name of the copyright holders nor the names of its
|
|
# contributors may be used to endorse or promote products derived from
|
|
# this software without specific prior written permission.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
#
|
|
# Authors: Nathan Binkert
|
|
|
|
from m5.SimObject import SimObject
|
|
from m5.params import *
|
|
from m5.proxy import *
|
|
from Device import BasicPioDevice, DmaDevice, PioDevice
|
|
|
|
class PciConfigAll(PioDevice):
|
|
type = 'PciConfigAll'
|
|
platform = Param.Platform(Parent.any, "Platform this device is part of.")
|
|
pio_latency = Param.Latency('30ns', "Programmed IO latency")
|
|
bus = Param.UInt8(0x00, "PCI bus to act as config space for")
|
|
size = Param.MemorySize32('16MB', "Size of config space")
|
|
|
|
|
|
class PciDevice(DmaDevice):
|
|
type = 'PciDevice'
|
|
abstract = True
|
|
platform = Param.Platform(Parent.any, "Platform this device is part of.")
|
|
config = SlavePort("PCI configuration space port")
|
|
pci_bus = Param.Int("PCI bus")
|
|
pci_dev = Param.Int("PCI device number")
|
|
pci_func = Param.Int("PCI function code")
|
|
pio_latency = Param.Latency('30ns', "Programmed IO latency")
|
|
config_latency = Param.Latency('20ns', "Config read or write latency")
|
|
|
|
VendorID = Param.UInt16("Vendor ID")
|
|
DeviceID = Param.UInt16("Device ID")
|
|
Command = Param.UInt16(0, "Command")
|
|
Status = Param.UInt16(0, "Status")
|
|
Revision = Param.UInt8(0, "Device")
|
|
ProgIF = Param.UInt8(0, "Programming Interface")
|
|
SubClassCode = Param.UInt8(0, "Sub-Class Code")
|
|
ClassCode = Param.UInt8(0, "Class Code")
|
|
CacheLineSize = Param.UInt8(0, "System Cacheline Size")
|
|
LatencyTimer = Param.UInt8(0, "PCI Latency Timer")
|
|
HeaderType = Param.UInt8(0, "PCI Header Type")
|
|
BIST = Param.UInt8(0, "Built In Self Test")
|
|
|
|
BAR0 = Param.UInt32(0x00, "Base Address Register 0")
|
|
BAR1 = Param.UInt32(0x00, "Base Address Register 1")
|
|
BAR2 = Param.UInt32(0x00, "Base Address Register 2")
|
|
BAR3 = Param.UInt32(0x00, "Base Address Register 3")
|
|
BAR4 = Param.UInt32(0x00, "Base Address Register 4")
|
|
BAR5 = Param.UInt32(0x00, "Base Address Register 5")
|
|
BAR0Size = Param.MemorySize32('0B', "Base Address Register 0 Size")
|
|
BAR1Size = Param.MemorySize32('0B', "Base Address Register 1 Size")
|
|
BAR2Size = Param.MemorySize32('0B', "Base Address Register 2 Size")
|
|
BAR3Size = Param.MemorySize32('0B', "Base Address Register 3 Size")
|
|
BAR4Size = Param.MemorySize32('0B', "Base Address Register 4 Size")
|
|
BAR5Size = Param.MemorySize32('0B', "Base Address Register 5 Size")
|
|
BAR0LegacyIO = Param.Bool(False, "Whether BAR0 is hardwired legacy IO")
|
|
BAR1LegacyIO = Param.Bool(False, "Whether BAR1 is hardwired legacy IO")
|
|
BAR2LegacyIO = Param.Bool(False, "Whether BAR2 is hardwired legacy IO")
|
|
BAR3LegacyIO = Param.Bool(False, "Whether BAR3 is hardwired legacy IO")
|
|
BAR4LegacyIO = Param.Bool(False, "Whether BAR4 is hardwired legacy IO")
|
|
BAR5LegacyIO = Param.Bool(False, "Whether BAR5 is hardwired legacy IO")
|
|
|
|
CardbusCIS = Param.UInt32(0x00, "Cardbus Card Information Structure")
|
|
SubsystemID = Param.UInt16(0x00, "Subsystem ID")
|
|
SubsystemVendorID = Param.UInt16(0x00, "Subsystem Vendor ID")
|
|
ExpansionROM = Param.UInt32(0x00, "Expansion ROM Base Address")
|
|
InterruptLine = Param.UInt8(0x00, "Interrupt Line")
|
|
InterruptPin = Param.UInt8(0x00, "Interrupt Pin")
|
|
MaximumLatency = Param.UInt8(0x00, "Maximum Latency")
|
|
MinimumGrant = Param.UInt8(0x00, "Minimum Grant")
|
|
|
|
|