diff options
Diffstat (limited to 'hw/kvm')
| -rw-r--r-- | hw/kvm/arm_gic.c | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/hw/kvm/arm_gic.c b/hw/kvm/arm_gic.c deleted file mode 100644 index 22b40b4f84..0000000000 --- a/hw/kvm/arm_gic.c +++ /dev/null @@ -1,167 +0,0 @@ -/* - * ARM Generic Interrupt Controller using KVM in-kernel support - * - * Copyright (c) 2012 Linaro Limited - * Written by Peter Maydell - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, see <http://www.gnu.org/licenses/>. - */ - -#include "hw/sysbus.h" -#include "sysemu/kvm.h" -#include "kvm_arm.h" -#include "hw/arm_gic_internal.h" - -#define TYPE_KVM_ARM_GIC "kvm-arm-gic" -#define KVM_ARM_GIC(obj) \ - OBJECT_CHECK(GICState, (obj), TYPE_KVM_ARM_GIC) -#define KVM_ARM_GIC_CLASS(klass) \ - OBJECT_CLASS_CHECK(KVMARMGICClass, (klass), TYPE_KVM_ARM_GIC) -#define KVM_ARM_GIC_GET_CLASS(obj) \ - OBJECT_GET_CLASS(KVMARMGICClass, (obj), TYPE_KVM_ARM_GIC) - -typedef struct KVMARMGICClass { - ARMGICCommonClass parent_class; - DeviceRealize parent_realize; - void (*parent_reset)(DeviceState *dev); -} KVMARMGICClass; - -static void kvm_arm_gic_set_irq(void *opaque, int irq, int level) -{ - /* Meaning of the 'irq' parameter: - * [0..N-1] : external interrupts - * [N..N+31] : PPI (internal) interrupts for CPU 0 - * [N+32..N+63] : PPI (internal interrupts for CPU 1 - * ... - * Convert this to the kernel's desired encoding, which - * has separate fields in the irq number for type, - * CPU number and interrupt number. - */ - GICState *s = (GICState *)opaque; - int kvm_irq, irqtype, cpu; - - if (irq < (s->num_irq - GIC_INTERNAL)) { - /* External interrupt. The kernel numbers these like the GIC - * hardware, with external interrupt IDs starting after the - * internal ones. - */ - irqtype = KVM_ARM_IRQ_TYPE_SPI; - cpu = 0; - irq += GIC_INTERNAL; - } else { - /* Internal interrupt: decode into (cpu, interrupt id) */ - irqtype = KVM_ARM_IRQ_TYPE_PPI; - irq -= (s->num_irq - GIC_INTERNAL); - cpu = irq / GIC_INTERNAL; - irq %= GIC_INTERNAL; - } - kvm_irq = (irqtype << KVM_ARM_IRQ_TYPE_SHIFT) - | (cpu << KVM_ARM_IRQ_VCPU_SHIFT) | irq; - - kvm_set_irq(kvm_state, kvm_irq, !!level); -} - -static void kvm_arm_gic_put(GICState *s) -{ - /* TODO: there isn't currently a kernel interface to set the GIC state */ -} - -static void kvm_arm_gic_get(GICState *s) -{ - /* TODO: there isn't currently a kernel interface to get the GIC state */ -} - -static void kvm_arm_gic_reset(DeviceState *dev) -{ - GICState *s = ARM_GIC_COMMON(dev); - KVMARMGICClass *kgc = KVM_ARM_GIC_GET_CLASS(s); - - kgc->parent_reset(dev); - kvm_arm_gic_put(s); -} - -static void kvm_arm_gic_realize(DeviceState *dev, Error **errp) -{ - int i; - GICState *s = KVM_ARM_GIC(dev); - SysBusDevice *sbd = SYS_BUS_DEVICE(dev); - KVMARMGICClass *kgc = KVM_ARM_GIC_GET_CLASS(s); - - kgc->parent_realize(dev, errp); - if (error_is_set(errp)) { - return; - } - - i = s->num_irq - GIC_INTERNAL; - /* For the GIC, also expose incoming GPIO lines for PPIs for each CPU. - * GPIO array layout is thus: - * [0..N-1] SPIs - * [N..N+31] PPIs for CPU 0 - * [N+32..N+63] PPIs for CPU 1 - * ... - */ - i += (GIC_INTERNAL * s->num_cpu); - qdev_init_gpio_in(dev, kvm_arm_gic_set_irq, i); - /* We never use our outbound IRQ lines but provide them so that - * we maintain the same interface as the non-KVM GIC. - */ - for (i = 0; i < s->num_cpu; i++) { - sysbus_init_irq(sbd, &s->parent_irq[i]); - } - /* Distributor */ - memory_region_init_reservation(&s->iomem, "kvm-gic_dist", 0x1000); - sysbus_init_mmio(sbd, &s->iomem); - kvm_arm_register_device(&s->iomem, - (KVM_ARM_DEVICE_VGIC_V2 << KVM_ARM_DEVICE_ID_SHIFT) - | KVM_VGIC_V2_ADDR_TYPE_DIST); - /* CPU interface for current core. Unlike arm_gic, we don't - * provide the "interface for core #N" memory regions, because - * cores with a VGIC don't have those. - */ - memory_region_init_reservation(&s->cpuiomem[0], "kvm-gic_cpu", 0x1000); - sysbus_init_mmio(sbd, &s->cpuiomem[0]); - kvm_arm_register_device(&s->cpuiomem[0], - (KVM_ARM_DEVICE_VGIC_V2 << KVM_ARM_DEVICE_ID_SHIFT) - | KVM_VGIC_V2_ADDR_TYPE_CPU); -} - -static void kvm_arm_gic_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - ARMGICCommonClass *agcc = ARM_GIC_COMMON_CLASS(klass); - KVMARMGICClass *kgc = KVM_ARM_GIC_CLASS(klass); - - agcc->pre_save = kvm_arm_gic_get; - agcc->post_load = kvm_arm_gic_put; - kgc->parent_realize = dc->realize; - kgc->parent_reset = dc->reset; - dc->realize = kvm_arm_gic_realize; - dc->reset = kvm_arm_gic_reset; - dc->no_user = 1; -} - -static const TypeInfo kvm_arm_gic_info = { - .name = TYPE_KVM_ARM_GIC, - .parent = TYPE_ARM_GIC_COMMON, - .instance_size = sizeof(GICState), - .class_init = kvm_arm_gic_class_init, - .class_size = sizeof(KVMARMGICClass), -}; - -static void kvm_arm_gic_register_types(void) -{ - type_register_static(&kvm_arm_gic_info); -} - -type_init(kvm_arm_gic_register_types) |