diff options
Diffstat (limited to 'hw/intc/arm_gicv3.c')
-rw-r--r-- | hw/intc/arm_gicv3.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/hw/intc/arm_gicv3.c b/hw/intc/arm_gicv3.c new file mode 100644 index 0000000000..96e0d2ffcc --- /dev/null +++ b/hw/intc/arm_gicv3.c @@ -0,0 +1,74 @@ +/* + * ARM Generic Interrupt Controller v3 + * + * Copyright (c) 2015 Huawei. + * Copyright (c) 2016 Linaro Limited + * Written by Shlomo Pongratz, Peter Maydell + * + * This code is licensed under the GPL, version 2 or (at your option) + * any later version. + */ + +/* This file contains implementation code for an interrupt controller + * which implements the GICv3 architecture. Specifically this is where + * the device class itself and the functions for handling interrupts + * coming in and going out live. + */ + +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "hw/sysbus.h" +#include "hw/intc/arm_gicv3.h" +#include "gicv3_internal.h" + +/* Process a change in an external IRQ input. */ +static void gicv3_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 + * ... + */ + /* Do nothing for now */ +} + +static void arm_gic_realize(DeviceState *dev, Error **errp) +{ + /* Device instance realize function for the GIC sysbus device */ + GICv3State *s = ARM_GICV3(dev); + ARMGICv3Class *agc = ARM_GICV3_GET_CLASS(s); + Error *local_err = NULL; + + agc->parent_realize(dev, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + gicv3_init_irqs_and_mmio(s, gicv3_set_irq, NULL); +} + +static void arm_gicv3_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + ARMGICv3Class *agc = ARM_GICV3_CLASS(klass); + + agc->parent_realize = dc->realize; + dc->realize = arm_gic_realize; +} + +static const TypeInfo arm_gicv3_info = { + .name = TYPE_ARM_GICV3, + .parent = TYPE_ARM_GICV3_COMMON, + .instance_size = sizeof(GICv3State), + .class_init = arm_gicv3_class_init, + .class_size = sizeof(ARMGICv3Class), +}; + +static void arm_gicv3_register_types(void) +{ + type_register_static(&arm_gicv3_info); +} + +type_init(arm_gicv3_register_types) |