diff options
| -rw-r--r-- | src/dev/arm/RealView.py | 14 | ||||
| -rw-r--r-- | src/dev/arm/SConscript | 1 | ||||
| -rw-r--r-- | src/dev/arm/pci_host.cc | 79 | ||||
| -rw-r--r-- | src/dev/arm/pci_host.hh | 66 |
4 files changed, 160 insertions, 0 deletions
diff --git a/src/dev/arm/RealView.py b/src/dev/arm/RealView.py index 78154bcfd..3ff0d4fe6 100644 --- a/src/dev/arm/RealView.py +++ b/src/dev/arm/RealView.py @@ -86,6 +86,20 @@ class A9SCU(BasicPioDevice): type = 'A9SCU' cxx_header = "dev/arm/a9scu.hh" +class ArmPciIntRouting(Enum): vals = [ + 'ARM_PCI_INT_STATIC', + 'ARM_PCI_INT_DEV', + 'ARM_PCI_INT_PIN', + ] + +class GenericArmPciHost(GenericPciHost): + type = 'GenericArmPciHost' + cxx_header = "dev/arm/pci_host.hh" + + int_policy = Param.ArmPciIntRouting("PCI interrupt routing policy") + int_base = Param.Unsigned("PCI interrupt base") + int_count = Param.Unsigned("Maximum number of interrupts used by this host") + class RealViewCtrl(BasicPioDevice): type = 'RealViewCtrl' cxx_header = "dev/arm/rv_ctrl.hh" diff --git a/src/dev/arm/SConscript b/src/dev/arm/SConscript index 804c11b24..7a559928b 100644 --- a/src/dev/arm/SConscript +++ b/src/dev/arm/SConscript @@ -62,6 +62,7 @@ if env['TARGET_ISA'] == 'arm': Source('kmi.cc') Source('timer_sp804.cc') Source('gpu_nomali.cc') + Source('pci_host.cc') Source('rv_ctrl.cc') Source('realview.cc') Source('rtc_pl031.cc') diff --git a/src/dev/arm/pci_host.cc b/src/dev/arm/pci_host.cc new file mode 100644 index 000000000..69eecaa7b --- /dev/null +++ b/src/dev/arm/pci_host.cc @@ -0,0 +1,79 @@ +/* + * Copyright (c) 2015 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 + */ + +#include "dev/arm/pci_host.hh" + +#include "params/GenericArmPciHost.hh" + +GenericArmPciHost::GenericArmPciHost(const GenericArmPciHostParams *p) + : GenericPciHost(p), + intPolicy(p->int_policy), intBase(p->int_base), + intCount(p->int_count) +{ +} + + +uint32_t +GenericArmPciHost::mapPciInterrupt(const PciBusAddr &addr, PciIntPin pin) const +{ + fatal_if(pin == PciIntPin::NO_INT, + "%02x:%02x.%i: Interrupt from a device without interrupts\n", + addr.bus, addr.dev, addr.func); + + switch (intPolicy) { + case Enums::ARM_PCI_INT_STATIC: + return GenericPciHost::mapPciInterrupt(addr, pin); + + case Enums::ARM_PCI_INT_DEV: + return intBase + (addr.dev % intCount); + + case Enums::ARM_PCI_INT_PIN: + return intBase + ((static_cast<uint8_t>(pin) - 1) % intCount); + + default: + fatal("Unsupported PCI interrupt routing policy."); + } +} + + +GenericArmPciHost * +GenericArmPciHostParams::create() +{ + return new GenericArmPciHost(this); +} diff --git a/src/dev/arm/pci_host.hh b/src/dev/arm/pci_host.hh new file mode 100644 index 000000000..5835c210f --- /dev/null +++ b/src/dev/arm/pci_host.hh @@ -0,0 +1,66 @@ +/* + * Copyright (c) 2015 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 + */ + +#ifndef __DEV_ARM_PCI_HOST_HH__ +#define __DEV_ARM_PCI_HOST_HH__ + +#include "dev/pci/host.hh" +#include "enums/ArmPciIntRouting.hh" + +class BaseGic; +struct GenericArmPciHostParams; + +class GenericArmPciHost + : public GenericPciHost +{ + public: + GenericArmPciHost(const GenericArmPciHostParams *p); + virtual ~GenericArmPciHost() {} + + protected: + uint32_t mapPciInterrupt(const PciBusAddr &addr, + PciIntPin pin) const override; + + protected: + const Enums::ArmPciIntRouting intPolicy; + const uint32_t intBase; + const uint32_t intCount; +}; + +#endif // __DEV_ARM_PCI_HOST_HH__ |