src/dev/arm/Gic.py - public/gem5 - Git at Google

 # Copyright (c) 2012-2013, 2017-2018 ARM Limited
 # All rights reserved.
 #
 # The license below extends only to copyright in the software and shall
 # not be construed as granting a license to any other intellectual
 # property including but not limited to intellectual property relating
 # to a hardware implementation of the functionality of the software
 # licensed hereunder.  You may use the software subject to the license
 # terms below provided that you ensure that this notice is replicated
 # unmodified and in its entirety in all distributions of the software,
 # modified or unmodified, in source code or in binary form.
 #
 # 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: Andreas Sandberg

 from m5.params import *
 from m5.proxy import *
 from m5.util.fdthelper import *
 from m5.SimObject import SimObject

 from m5.objects.Device import PioDevice
 from m5.objects.Platform import Platform

 class BaseGic(PioDevice):
     type = 'BaseGic'
     abstract = True
     cxx_header = "dev/arm/base_gic.hh"

     platform = Param.Platform(Parent.any, "Platform this device is part of.")

     gicd_iidr = Param.UInt32(0,
         "Distributor Implementer Identification Register")
     gicd_pidr = Param.UInt32(0,
         "Peripheral Identification Register")
     gicc_iidr = Param.UInt32(0,
         "CPU Interface Identification Register")
     gicv_iidr = Param.UInt32(0,
         "VM CPU Interface Identification Register")

 class ArmInterruptPin(SimObject):
     type = 'ArmInterruptPin'
     cxx_header = "dev/arm/base_gic.hh"
     cxx_class = "ArmInterruptPinGen"
     abstract = True

     platform = Param.Platform(Parent.any, "Platform with interrupt controller")
     num = Param.UInt32("Interrupt number in GIC")

 class ArmSPI(ArmInterruptPin):
     type = 'ArmSPI'
     cxx_header = "dev/arm/base_gic.hh"
     cxx_class = "ArmSPIGen"

 class ArmPPI(ArmInterruptPin):
     type = 'ArmPPI'
     cxx_header = "dev/arm/base_gic.hh"
     cxx_class = "ArmPPIGen"

 class GicV2(BaseGic):
     type = 'GicV2'
     cxx_header = "dev/arm/gic_v2.hh"

     dist_addr = Param.Addr("Address for distributor")
     cpu_addr = Param.Addr("Address for cpu")
     cpu_size = Param.Addr(0x2000, "Size of cpu register bank")
     dist_pio_delay = Param.Latency('10ns', "Delay for PIO r/w to distributor")
     cpu_pio_delay = Param.Latency('10ns', "Delay for PIO r/w to cpu interface")
     int_latency = Param.Latency('10ns', "Delay for interrupt to get to CPU")
     it_lines = Param.UInt32(128, "Number of interrupt lines supported (max = 1020)")
     gem5_extensions = Param.Bool(False, "Enable gem5 extensions")

 class Gic400(GicV2):
     """
     As defined in:
     "ARM Generic Interrupt Controller Architecture" version 2.0
     "CoreLink GIC-400 Generic Interrupt Controller" revision r0p1
     """
     gicd_pidr = 0x002bb490
     gicd_iidr = 0x0200143B
     gicc_iidr = 0x0202143B

     # gicv_iidr same as gicc_idr
     gicv_iidr = gicc_iidr

 class Gicv2mFrame(SimObject):
     type = 'Gicv2mFrame'
     cxx_header = "dev/arm/gic_v2m.hh"
     spi_base = Param.UInt32(0x0, "Frame SPI base number");
     spi_len = Param.UInt32(0x0, "Frame SPI total number");
     addr = Param.Addr("Address for frame PIO")

 class Gicv2m(PioDevice):
     type = 'Gicv2m'
     cxx_header = "dev/arm/gic_v2m.hh"

     pio_delay = Param.Latency('10ns', "Delay for PIO r/w")
     gic = Param.BaseGic(Parent.any, "Gic on which to trigger interrupts")
     frames = VectorParam.Gicv2mFrame([], "Power of two number of frames")

 class VGic(PioDevice):
     type = 'VGic'
     cxx_header = "dev/arm/vgic.hh"
     gic = Param.BaseGic(Parent.any, "Gic to use for interrupting")
     platform = Param.Platform(Parent.any, "Platform this device is part of.")
     vcpu_addr = Param.Addr(0, "Address for vcpu interfaces")
     hv_addr = Param.Addr(0, "Address for hv control")
     pio_delay = Param.Latency('10ns', "Delay for PIO r/w")
    # The number of list registers is not currently configurable at runtime.
     maint_int = Param.UInt32("HV maintenance interrupt number")

     # gicv_iidr same as gicc_idr
     gicv_iidr = Param.UInt32(Self.gic.gicc_iidr,
         "VM CPU Interface Identification Register")

     def generateDeviceTree(self, state):
         gic = self.gic.unproxy(self)

         node = FdtNode("interrupt-controller")
         node.appendCompatible(["gem5,gic", "arm,cortex-a15-gic",
                                "arm,cortex-a9-gic"])
         node.append(FdtPropertyWords("#interrupt-cells", [3]))
         node.append(FdtPropertyWords("#address-cells", [0]))
         node.append(FdtProperty("interrupt-controller"))

         regs = (
             state.addrCells(gic.dist_addr) +
             state.sizeCells(0x1000) +
             state.addrCells(gic.cpu_addr) +
             state.sizeCells(0x1000) +
             state.addrCells(self.hv_addr) +
             state.sizeCells(0x2000) +
             state.addrCells(self.vcpu_addr) +
             state.sizeCells(0x2000) )

         node.append(FdtPropertyWords("reg", regs))
         node.append(FdtPropertyWords("interrupts",
                                      [1, int(self.maint_int)-16, 0xf04]))

         node.appendPhandle(gic)

         yield node

 class Gicv3(BaseGic):
     type = 'Gicv3'
     cxx_header = "dev/arm/gic_v3.hh"

     dist_addr = Param.Addr("Address for distributor")
     dist_pio_delay = Param.Latency('10ns', "Delay for PIO r/w to distributor")
     redist_addr = Param.Addr("Address for redistributors")
     redist_pio_delay = Param.Latency('10ns',
             "Delay for PIO r/w to redistributors")
     it_lines = Param.UInt32(1020,
             "Number of interrupt lines supported (max = 1020)")

     maint_int = Param.ArmInterruptPin(
         "HV maintenance interrupt."
         "ARM strongly recommends that maintenance interrupts "
         "are configured to use INTID 25 (PPI Interrupt).")

     cpu_max = Param.Unsigned(256,
         "Maximum number of PE. This is affecting the maximum number of "
         "redistributors")

     gicv4 = Param.Bool(True, "GICv4 extension available")
	# Copyright (c) 2012-2013, 2017-2018 ARM Limited
	# All rights reserved.
	#
	# The license below extends only to copyright in the software and shall
	# not be construed as granting a license to any other intellectual
	# property including but not limited to intellectual property relating
	# to a hardware implementation of the functionality of the software
	# licensed hereunder. You may use the software subject to the license
	# terms below provided that you ensure that this notice is replicated
	# unmodified and in its entirety in all distributions of the software,
	# modified or unmodified, in source code or in binary form.
	#
	# 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: Andreas Sandberg

	from m5.params import *
	from m5.proxy import *
	from m5.util.fdthelper import *
	from m5.SimObject import SimObject

	from m5.objects.Device import PioDevice
	from m5.objects.Platform import Platform

	class BaseGic(PioDevice):
	type = 'BaseGic'
	abstract = True
	cxx_header = "dev/arm/base_gic.hh"

	platform = Param.Platform(Parent.any, "Platform this device is part of.")

	gicd_iidr = Param.UInt32(0,
	"Distributor Implementer Identification Register")
	gicd_pidr = Param.UInt32(0,
	"Peripheral Identification Register")
	gicc_iidr = Param.UInt32(0,
	"CPU Interface Identification Register")
	gicv_iidr = Param.UInt32(0,
	"VM CPU Interface Identification Register")

	class ArmInterruptPin(SimObject):
	type = 'ArmInterruptPin'
	cxx_header = "dev/arm/base_gic.hh"
	cxx_class = "ArmInterruptPinGen"
	abstract = True

	platform = Param.Platform(Parent.any, "Platform with interrupt controller")
	num = Param.UInt32("Interrupt number in GIC")

	class ArmSPI(ArmInterruptPin):
	type = 'ArmSPI'
	cxx_header = "dev/arm/base_gic.hh"
	cxx_class = "ArmSPIGen"

	class ArmPPI(ArmInterruptPin):
	type = 'ArmPPI'
	cxx_header = "dev/arm/base_gic.hh"
	cxx_class = "ArmPPIGen"

	class GicV2(BaseGic):
	type = 'GicV2'
	cxx_header = "dev/arm/gic_v2.hh"

	dist_addr = Param.Addr("Address for distributor")
	cpu_addr = Param.Addr("Address for cpu")
	cpu_size = Param.Addr(0x2000, "Size of cpu register bank")
	dist_pio_delay = Param.Latency('10ns', "Delay for PIO r/w to distributor")
	cpu_pio_delay = Param.Latency('10ns', "Delay for PIO r/w to cpu interface")
	int_latency = Param.Latency('10ns', "Delay for interrupt to get to CPU")
	it_lines = Param.UInt32(128, "Number of interrupt lines supported (max = 1020)")
	gem5_extensions = Param.Bool(False, "Enable gem5 extensions")

	class Gic400(GicV2):
	"""
	As defined in:
	"ARM Generic Interrupt Controller Architecture" version 2.0
	"CoreLink GIC-400 Generic Interrupt Controller" revision r0p1
	"""
	gicd_pidr = 0x002bb490
	gicd_iidr = 0x0200143B
	gicc_iidr = 0x0202143B

	# gicv_iidr same as gicc_idr
	gicv_iidr = gicc_iidr

	class Gicv2mFrame(SimObject):
	type = 'Gicv2mFrame'
	cxx_header = "dev/arm/gic_v2m.hh"
	spi_base = Param.UInt32(0x0, "Frame SPI base number");
	spi_len = Param.UInt32(0x0, "Frame SPI total number");
	addr = Param.Addr("Address for frame PIO")

	class Gicv2m(PioDevice):
	type = 'Gicv2m'
	cxx_header = "dev/arm/gic_v2m.hh"

	pio_delay = Param.Latency('10ns', "Delay for PIO r/w")
	gic = Param.BaseGic(Parent.any, "Gic on which to trigger interrupts")
	frames = VectorParam.Gicv2mFrame([], "Power of two number of frames")

	class VGic(PioDevice):
	type = 'VGic'
	cxx_header = "dev/arm/vgic.hh"
	gic = Param.BaseGic(Parent.any, "Gic to use for interrupting")
	platform = Param.Platform(Parent.any, "Platform this device is part of.")
	vcpu_addr = Param.Addr(0, "Address for vcpu interfaces")
	hv_addr = Param.Addr(0, "Address for hv control")
	pio_delay = Param.Latency('10ns', "Delay for PIO r/w")
	# The number of list registers is not currently configurable at runtime.
	maint_int = Param.UInt32("HV maintenance interrupt number")

	# gicv_iidr same as gicc_idr
	gicv_iidr = Param.UInt32(Self.gic.gicc_iidr,
	"VM CPU Interface Identification Register")

	def generateDeviceTree(self, state):
	gic = self.gic.unproxy(self)

	node = FdtNode("interrupt-controller")
	node.appendCompatible(["gem5,gic", "arm,cortex-a15-gic",
	"arm,cortex-a9-gic"])
	node.append(FdtPropertyWords("#interrupt-cells", [3]))
	node.append(FdtPropertyWords("#address-cells", [0]))
	node.append(FdtProperty("interrupt-controller"))

	regs = (
	state.addrCells(gic.dist_addr) +
	state.sizeCells(0x1000) +
	state.addrCells(gic.cpu_addr) +
	state.sizeCells(0x1000) +
	state.addrCells(self.hv_addr) +
	state.sizeCells(0x2000) +
	state.addrCells(self.vcpu_addr) +
	state.sizeCells(0x2000) )

	node.append(FdtPropertyWords("reg", regs))
	node.append(FdtPropertyWords("interrupts",
	[1, int(self.maint_int)-16, 0xf04]))

	node.appendPhandle(gic)

	yield node

	class Gicv3(BaseGic):
	type = 'Gicv3'
	cxx_header = "dev/arm/gic_v3.hh"

	dist_addr = Param.Addr("Address for distributor")
	dist_pio_delay = Param.Latency('10ns', "Delay for PIO r/w to distributor")
	redist_addr = Param.Addr("Address for redistributors")
	redist_pio_delay = Param.Latency('10ns',
	"Delay for PIO r/w to redistributors")
	it_lines = Param.UInt32(1020,
	"Number of interrupt lines supported (max = 1020)")

	maint_int = Param.ArmInterruptPin(
	"HV maintenance interrupt."
	"ARM strongly recommends that maintenance interrupts "
	"are configured to use INTID 25 (PPI Interrupt).")

	cpu_max = Param.Unsigned(256,
	"Maximum number of PE. This is affecting the maximum number of "
	"redistributors")

	gicv4 = Param.Bool(True, "GICv4 extension available")