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/*
* ARM GICv3 support - common bits of emulated and KVM kernel model
*
* Copyright (c) 2012 Linaro Limited
* Copyright (c) 2015 Huawei.
* Written by Peter Maydell
* Extended to 64 cores by Shlomo Pongratz
*
* 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 "qemu/osdep.h"
#include "hw/intc/arm_gicv3_common.h"
static void gicv3_pre_save(void *opaque)
{
GICv3State *s = (GICv3State *)opaque;
ARMGICv3CommonClass *c = ARM_GICV3_COMMON_GET_CLASS(s);
if (c->pre_save) {
c->pre_save(s);
}
}
static int gicv3_post_load(void *opaque, int version_id)
{
GICv3State *s = (GICv3State *)opaque;
ARMGICv3CommonClass *c = ARM_GICV3_COMMON_GET_CLASS(s);
if (c->post_load) {
c->post_load(s);
}
return 0;
}
static const VMStateDescription vmstate_gicv3 = {
.name = "arm_gicv3",
.unmigratable = 1,
.pre_save = gicv3_pre_save,
.post_load = gicv3_post_load,
};
void gicv3_init_irqs_and_mmio(GICv3State *s, qemu_irq_handler handler,
const MemoryRegionOps *ops)
{
SysBusDevice *sbd = SYS_BUS_DEVICE(s);
int i;
/* For the GIC, also expose incoming GPIO lines for PPIs for each CPU.
* GPIO array layout is thus:
* [0..N-1] spi
* [N..N+31] PPIs for CPU 0
* [N+32..N+63] PPIs for CPU 1
* ...
*/
i = s->num_irq - GIC_INTERNAL + GIC_INTERNAL * s->num_cpu;
qdev_init_gpio_in(DEVICE(s), handler, i);
s->parent_irq = g_malloc(s->num_cpu * sizeof(qemu_irq));
s->parent_fiq = g_malloc(s->num_cpu * sizeof(qemu_irq));
for (i = 0; i < s->num_cpu; i++) {
sysbus_init_irq(sbd, &s->parent_irq[i]);
}
for (i = 0; i < s->num_cpu; i++) {
sysbus_init_irq(sbd, &s->parent_fiq[i]);
}
memory_region_init_io(&s->iomem_dist, OBJECT(s), ops, s,
"gicv3_dist", 0x10000);
memory_region_init_io(&s->iomem_redist, OBJECT(s), ops ? &ops[1] : NULL, s,
"gicv3_redist", 0x20000 * s->num_cpu);
sysbus_init_mmio(sbd, &s->iomem_dist);
sysbus_init_mmio(sbd, &s->iomem_redist);
}
static void arm_gicv3_common_realize(DeviceState *dev, Error **errp)
{
GICv3State *s = ARM_GICV3_COMMON(dev);
/* revision property is actually reserved and currently used only in order
* to keep the interface compatible with GICv2 code, avoiding extra
* conditions. However, in future it could be used, for example, if we
* implement GICv4.
*/
if (s->revision != 3) {
error_setg(errp, "unsupported GIC revision %d", s->revision);
return;
}
}
static void arm_gicv3_common_reset(DeviceState *dev)
{
/* TODO */
}
static Property arm_gicv3_common_properties[] = {
DEFINE_PROP_UINT32("num-cpu", GICv3State, num_cpu, 1),
DEFINE_PROP_UINT32("num-irq", GICv3State, num_irq, 32),
DEFINE_PROP_UINT32("revision", GICv3State, revision, 3),
DEFINE_PROP_BOOL("has-security-extensions", GICv3State, security_extn, 0),
DEFINE_PROP_END_OF_LIST(),
};
static void arm_gicv3_common_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->reset = arm_gicv3_common_reset;
dc->realize = arm_gicv3_common_realize;
dc->props = arm_gicv3_common_properties;
dc->vmsd = &vmstate_gicv3;
}
static const TypeInfo arm_gicv3_common_type = {
.name = TYPE_ARM_GICV3_COMMON,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(GICv3State),
.class_size = sizeof(ARMGICv3CommonClass),
.class_init = arm_gicv3_common_class_init,
.abstract = true,
};
static void register_types(void)
{
type_register_static(&arm_gicv3_common_type);
}
type_init(register_types)
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