gic.cc revision 11462
110859Sandreas.sandberg@arm.com/* 211461Sandreas.sandberg@arm.com * Copyright (c) 2015-2016 ARM Limited 310859Sandreas.sandberg@arm.com * All rights reserved 410859Sandreas.sandberg@arm.com * 510859Sandreas.sandberg@arm.com * The license below extends only to copyright in the software and shall 610859Sandreas.sandberg@arm.com * not be construed as granting a license to any other intellectual 710859Sandreas.sandberg@arm.com * property including but not limited to intellectual property relating 810859Sandreas.sandberg@arm.com * to a hardware implementation of the functionality of the software 910859Sandreas.sandberg@arm.com * licensed hereunder. You may use the software subject to the license 1010859Sandreas.sandberg@arm.com * terms below provided that you ensure that this notice is replicated 1110859Sandreas.sandberg@arm.com * unmodified and in its entirety in all distributions of the software, 1210859Sandreas.sandberg@arm.com * modified or unmodified, in source code or in binary form. 1310859Sandreas.sandberg@arm.com * 1410859Sandreas.sandberg@arm.com * Redistribution and use in source and binary forms, with or without 1510859Sandreas.sandberg@arm.com * modification, are permitted provided that the following conditions are 1610859Sandreas.sandberg@arm.com * met: redistributions of source code must retain the above copyright 1710859Sandreas.sandberg@arm.com * notice, this list of conditions and the following disclaimer; 1810859Sandreas.sandberg@arm.com * redistributions in binary form must reproduce the above copyright 1910859Sandreas.sandberg@arm.com * notice, this list of conditions and the following disclaimer in the 2010859Sandreas.sandberg@arm.com * documentation and/or other materials provided with the distribution; 2110859Sandreas.sandberg@arm.com * neither the name of the copyright holders nor the names of its 2210859Sandreas.sandberg@arm.com * contributors may be used to endorse or promote products derived from 2310859Sandreas.sandberg@arm.com * this software without specific prior written permission. 2410859Sandreas.sandberg@arm.com * 2510859Sandreas.sandberg@arm.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 2610859Sandreas.sandberg@arm.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 2710859Sandreas.sandberg@arm.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 2810859Sandreas.sandberg@arm.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2910859Sandreas.sandberg@arm.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 3010859Sandreas.sandberg@arm.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 3110859Sandreas.sandberg@arm.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 3210859Sandreas.sandberg@arm.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 3310859Sandreas.sandberg@arm.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 3410859Sandreas.sandberg@arm.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 3510859Sandreas.sandberg@arm.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3610859Sandreas.sandberg@arm.com * 3710859Sandreas.sandberg@arm.com * Authors: Andreas Sandberg 3810859Sandreas.sandberg@arm.com */ 3910859Sandreas.sandberg@arm.com 4010859Sandreas.sandberg@arm.com#include "arch/arm/kvm/gic.hh" 4110859Sandreas.sandberg@arm.com 4210859Sandreas.sandberg@arm.com#include <linux/kvm.h> 4310859Sandreas.sandberg@arm.com 4410859Sandreas.sandberg@arm.com#include "debug/Interrupt.hh" 4510859Sandreas.sandberg@arm.com#include "params/KvmGic.hh" 4610859Sandreas.sandberg@arm.com 4711462Sandreas.sandberg@arm.comKvmKernelGicV2::KvmKernelGicV2(KvmVM &_vm, Addr cpu_addr, Addr dist_addr, 4811462Sandreas.sandberg@arm.com unsigned it_lines) 4911461Sandreas.sandberg@arm.com : cpuRange(RangeSize(cpu_addr, KVM_VGIC_V2_CPU_SIZE)), 5011461Sandreas.sandberg@arm.com distRange(RangeSize(dist_addr, KVM_VGIC_V2_DIST_SIZE)), 5111461Sandreas.sandberg@arm.com vm(_vm), 5211461Sandreas.sandberg@arm.com kdev(vm.createDevice(KVM_DEV_TYPE_ARM_VGIC_V2)) 5311461Sandreas.sandberg@arm.com{ 5411461Sandreas.sandberg@arm.com kdev.setAttr<uint64_t>( 5511461Sandreas.sandberg@arm.com KVM_DEV_ARM_VGIC_GRP_ADDR, KVM_VGIC_V2_ADDR_TYPE_DIST, dist_addr); 5611461Sandreas.sandberg@arm.com kdev.setAttr<uint64_t>( 5711461Sandreas.sandberg@arm.com KVM_DEV_ARM_VGIC_GRP_ADDR, KVM_VGIC_V2_ADDR_TYPE_CPU, cpu_addr); 5811462Sandreas.sandberg@arm.com 5911462Sandreas.sandberg@arm.com kdev.setAttr<uint32_t>(KVM_DEV_ARM_VGIC_GRP_NR_IRQS, 0, it_lines); 6011461Sandreas.sandberg@arm.com} 6111461Sandreas.sandberg@arm.com 6211461Sandreas.sandberg@arm.comKvmKernelGicV2::~KvmKernelGicV2() 6311461Sandreas.sandberg@arm.com{ 6411461Sandreas.sandberg@arm.com} 6511461Sandreas.sandberg@arm.com 6611461Sandreas.sandberg@arm.comvoid 6711461Sandreas.sandberg@arm.comKvmKernelGicV2::setSPI(unsigned spi) 6811461Sandreas.sandberg@arm.com{ 6911461Sandreas.sandberg@arm.com setIntState(KVM_ARM_IRQ_TYPE_SPI, 0, spi, true); 7011461Sandreas.sandberg@arm.com} 7111461Sandreas.sandberg@arm.com 7211461Sandreas.sandberg@arm.comvoid 7311461Sandreas.sandberg@arm.comKvmKernelGicV2::clearSPI(unsigned spi) 7411461Sandreas.sandberg@arm.com{ 7511461Sandreas.sandberg@arm.com setIntState(KVM_ARM_IRQ_TYPE_SPI, 0, spi, false); 7611461Sandreas.sandberg@arm.com} 7711461Sandreas.sandberg@arm.com 7811461Sandreas.sandberg@arm.comvoid 7911461Sandreas.sandberg@arm.comKvmKernelGicV2::setPPI(unsigned vcpu, unsigned ppi) 8011461Sandreas.sandberg@arm.com{ 8111461Sandreas.sandberg@arm.com setIntState(KVM_ARM_IRQ_TYPE_PPI, vcpu, ppi, true); 8211461Sandreas.sandberg@arm.com} 8311461Sandreas.sandberg@arm.com 8411461Sandreas.sandberg@arm.comvoid 8511461Sandreas.sandberg@arm.comKvmKernelGicV2::clearPPI(unsigned vcpu, unsigned ppi) 8611461Sandreas.sandberg@arm.com{ 8711461Sandreas.sandberg@arm.com setIntState(KVM_ARM_IRQ_TYPE_PPI, vcpu, ppi, false); 8811461Sandreas.sandberg@arm.com} 8911461Sandreas.sandberg@arm.com 9011461Sandreas.sandberg@arm.comvoid 9111461Sandreas.sandberg@arm.comKvmKernelGicV2::setIntState(unsigned type, unsigned vcpu, unsigned irq, 9211461Sandreas.sandberg@arm.com bool high) 9311461Sandreas.sandberg@arm.com{ 9411461Sandreas.sandberg@arm.com assert(type <= KVM_ARM_IRQ_TYPE_MASK); 9511461Sandreas.sandberg@arm.com assert(vcpu <= KVM_ARM_IRQ_VCPU_MASK); 9611461Sandreas.sandberg@arm.com assert(irq <= KVM_ARM_IRQ_NUM_MASK); 9711461Sandreas.sandberg@arm.com const uint32_t line( 9811461Sandreas.sandberg@arm.com (type << KVM_ARM_IRQ_TYPE_SHIFT) | 9911461Sandreas.sandberg@arm.com (vcpu << KVM_ARM_IRQ_VCPU_SHIFT) | 10011461Sandreas.sandberg@arm.com (irq << KVM_ARM_IRQ_NUM_SHIFT)); 10111461Sandreas.sandberg@arm.com 10211461Sandreas.sandberg@arm.com vm.setIRQLine(line, high); 10311461Sandreas.sandberg@arm.com} 10411461Sandreas.sandberg@arm.com 10511461Sandreas.sandberg@arm.com 10610859Sandreas.sandberg@arm.comKvmGic::KvmGic(const KvmGicParams *p) 10710859Sandreas.sandberg@arm.com : BaseGic(p), 10810859Sandreas.sandberg@arm.com system(*p->system), 10911462Sandreas.sandberg@arm.com kernelGic(*p->kvmVM, p->cpu_addr, p->dist_addr, p->it_lines), 11011461Sandreas.sandberg@arm.com addrRanges{kernelGic.distRange, kernelGic.cpuRange} 11110859Sandreas.sandberg@arm.com{ 11210859Sandreas.sandberg@arm.com} 11310859Sandreas.sandberg@arm.com 11410859Sandreas.sandberg@arm.comKvmGic::~KvmGic() 11510859Sandreas.sandberg@arm.com{ 11610859Sandreas.sandberg@arm.com} 11710859Sandreas.sandberg@arm.com 11810859Sandreas.sandberg@arm.comvoid 11910905Sandreas.sandberg@arm.comKvmGic::serialize(CheckpointOut &cp) const 12010859Sandreas.sandberg@arm.com{ 12110859Sandreas.sandberg@arm.com panic("Checkpointing unsupported\n"); 12210859Sandreas.sandberg@arm.com} 12310859Sandreas.sandberg@arm.com 12410859Sandreas.sandberg@arm.comvoid 12510905Sandreas.sandberg@arm.comKvmGic::unserialize(CheckpointIn &cp) 12610859Sandreas.sandberg@arm.com{ 12710859Sandreas.sandberg@arm.com panic("Checkpointing unsupported\n"); 12810859Sandreas.sandberg@arm.com} 12910859Sandreas.sandberg@arm.com 13010859Sandreas.sandberg@arm.comTick 13110859Sandreas.sandberg@arm.comKvmGic::read(PacketPtr pkt) 13210859Sandreas.sandberg@arm.com{ 13310859Sandreas.sandberg@arm.com panic("KvmGic: PIO from gem5 is currently unsupported\n"); 13410859Sandreas.sandberg@arm.com} 13510859Sandreas.sandberg@arm.com 13610859Sandreas.sandberg@arm.comTick 13710859Sandreas.sandberg@arm.comKvmGic::write(PacketPtr pkt) 13810859Sandreas.sandberg@arm.com{ 13910859Sandreas.sandberg@arm.com panic("KvmGic: PIO from gem5 is currently unsupported\n"); 14010859Sandreas.sandberg@arm.com} 14110859Sandreas.sandberg@arm.com 14210859Sandreas.sandberg@arm.comvoid 14310859Sandreas.sandberg@arm.comKvmGic::sendInt(uint32_t num) 14410859Sandreas.sandberg@arm.com{ 14510859Sandreas.sandberg@arm.com DPRINTF(Interrupt, "Set SPI %d\n", num); 14611461Sandreas.sandberg@arm.com kernelGic.setSPI(num); 14710859Sandreas.sandberg@arm.com} 14810859Sandreas.sandberg@arm.com 14910859Sandreas.sandberg@arm.comvoid 15010859Sandreas.sandberg@arm.comKvmGic::clearInt(uint32_t num) 15110859Sandreas.sandberg@arm.com{ 15210859Sandreas.sandberg@arm.com DPRINTF(Interrupt, "Clear SPI %d\n", num); 15311461Sandreas.sandberg@arm.com kernelGic.clearSPI(num); 15410859Sandreas.sandberg@arm.com} 15510859Sandreas.sandberg@arm.com 15610859Sandreas.sandberg@arm.comvoid 15710859Sandreas.sandberg@arm.comKvmGic::sendPPInt(uint32_t num, uint32_t cpu) 15810859Sandreas.sandberg@arm.com{ 15910859Sandreas.sandberg@arm.com DPRINTF(Interrupt, "Set PPI %d:%d\n", cpu, num); 16011461Sandreas.sandberg@arm.com kernelGic.setPPI(cpu, num); 16110859Sandreas.sandberg@arm.com} 16210859Sandreas.sandberg@arm.com 16310859Sandreas.sandberg@arm.comvoid 16410859Sandreas.sandberg@arm.comKvmGic::clearPPInt(uint32_t num, uint32_t cpu) 16510859Sandreas.sandberg@arm.com{ 16610859Sandreas.sandberg@arm.com DPRINTF(Interrupt, "Clear PPI %d:%d\n", cpu, num); 16711461Sandreas.sandberg@arm.com kernelGic.clearPPI(cpu, num); 16810859Sandreas.sandberg@arm.com} 16910859Sandreas.sandberg@arm.com 17010859Sandreas.sandberg@arm.comvoid 17110859Sandreas.sandberg@arm.comKvmGic::verifyMemoryMode() const 17210859Sandreas.sandberg@arm.com{ 17310859Sandreas.sandberg@arm.com if (!(system.isAtomicMode() && system.bypassCaches())) { 17410859Sandreas.sandberg@arm.com fatal("The in-kernel KVM GIC can only be used with KVM CPUs, but the " 17510859Sandreas.sandberg@arm.com "current memory mode does not support KVM.\n"); 17610859Sandreas.sandberg@arm.com } 17710859Sandreas.sandberg@arm.com} 17810859Sandreas.sandberg@arm.com 17910859Sandreas.sandberg@arm.com 18010859Sandreas.sandberg@arm.comKvmGic * 18110859Sandreas.sandberg@arm.comKvmGicParams::create() 18210859Sandreas.sandberg@arm.com{ 18310859Sandreas.sandberg@arm.com return new KvmGic(this); 18410859Sandreas.sandberg@arm.com} 185