VirtIO.py revision 11931 
1# -*- mode:python -*-
2
3# Copyright (c) 2014, 2016 ARM Limited
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38# Authors: Andreas Sandberg
39
40from m5.SimObject import SimObject
41from m5.params import *
42from m5.proxy import *
43from Device import PioDevice
44from PciDevice import PciDevice
45
46
47class VirtIODeviceBase(SimObject):
48    type = 'VirtIODeviceBase'
49    cxx_header = 'dev/virtio/base.hh'
50    abstract = True
51
52    subsystem = Param.UInt8(0x00, "VirtIO subsystem ID")
53
54    system = Param.System(Parent.any, "system object")
55
56class VirtIODummyDevice(VirtIODeviceBase):
57    type = 'VirtIODummyDevice'
58    cxx_header = 'dev/virtio/base.hh'
59
60class PciVirtIO(PciDevice):
61    type = 'PciVirtIO'
62    cxx_header = 'dev/virtio/pci.hh'
63
64    vio = Param.VirtIODeviceBase(VirtIODummyDevice(), "VirtIO device")
65
66    VendorID = 0x1AF4
67    SubsystemVendorID = VendorID;
68    DeviceID = 0x1000
69
70    ClassCode = 0xff # Misc device
71
72    BAR0 = 0x00000001 # Anywhere in 32-bit space; IOREG
73    BAR0Size = '0B' # Overridden by the device model
74
75    InterruptPin = 0x01 # Use #INTA
76