qemu/hw/cpu/a15mpcore.c
Daniel P. Berrangé efba15959c qom: simplify object_find_property / object_class_find_property
When debugging QEMU it is often useful to put a breakpoint on the
error_setg_internal method impl.

Unfortunately the object_property_add / object_class_property_add
methods call object_property_find / object_class_property_find methods
to check if a property exists already before adding the new property.

As a result there are a huge number of calls to error_setg_internal
on startup of most QEMU commands, making it very painful to set a
breakpoint on this method.

Most callers of object_find_property and object_class_find_property,
however, pass in a NULL for the Error parameter. This simplifies the
methods to remove the Error parameter entirely, and then adds some
new wrapper methods that are able to raise an Error when needed.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200914135617.1493072-1-berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2020-09-22 16:45:16 -04:00

181 lines
6.5 KiB
C

/*
* Cortex-A15MPCore internal peripheral emulation.
*
* 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 "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu/module.h"
#include "hw/cpu/a15mpcore.h"
#include "hw/irq.h"
#include "hw/qdev-properties.h"
#include "sysemu/kvm.h"
#include "kvm_arm.h"
static void a15mp_priv_set_irq(void *opaque, int irq, int level)
{
A15MPPrivState *s = (A15MPPrivState *)opaque;
qemu_set_irq(qdev_get_gpio_in(DEVICE(&s->gic), irq), level);
}
static void a15mp_priv_initfn(Object *obj)
{
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
A15MPPrivState *s = A15MPCORE_PRIV(obj);
memory_region_init(&s->container, obj, "a15mp-priv-container", 0x8000);
sysbus_init_mmio(sbd, &s->container);
object_initialize_child(obj, "gic", &s->gic, gic_class_name());
qdev_prop_set_uint32(DEVICE(&s->gic), "revision", 2);
}
static void a15mp_priv_realize(DeviceState *dev, Error **errp)
{
SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
A15MPPrivState *s = A15MPCORE_PRIV(dev);
DeviceState *gicdev;
SysBusDevice *busdev;
int i;
bool has_el3;
bool has_el2 = false;
Object *cpuobj;
gicdev = DEVICE(&s->gic);
qdev_prop_set_uint32(gicdev, "num-cpu", s->num_cpu);
qdev_prop_set_uint32(gicdev, "num-irq", s->num_irq);
if (!kvm_irqchip_in_kernel()) {
/* Make the GIC's TZ support match the CPUs. We assume that
* either all the CPUs have TZ, or none do.
*/
cpuobj = OBJECT(qemu_get_cpu(0));
has_el3 = object_property_find(cpuobj, "has_el3") &&
object_property_get_bool(cpuobj, "has_el3", &error_abort);
qdev_prop_set_bit(gicdev, "has-security-extensions", has_el3);
/* Similarly for virtualization support */
has_el2 = object_property_find(cpuobj, "has_el2") &&
object_property_get_bool(cpuobj, "has_el2", &error_abort);
qdev_prop_set_bit(gicdev, "has-virtualization-extensions", has_el2);
}
if (!sysbus_realize(SYS_BUS_DEVICE(&s->gic), errp)) {
return;
}
busdev = SYS_BUS_DEVICE(&s->gic);
/* Pass through outbound IRQ lines from the GIC */
sysbus_pass_irq(sbd, busdev);
/* Pass through inbound GPIO lines to the GIC */
qdev_init_gpio_in(dev, a15mp_priv_set_irq, s->num_irq - 32);
/* Wire the outputs from each CPU's generic timer to the
* appropriate GIC PPI inputs
*/
for (i = 0; i < s->num_cpu; i++) {
DeviceState *cpudev = DEVICE(qemu_get_cpu(i));
int ppibase = s->num_irq - 32 + i * 32;
int irq;
/* Mapping from the output timer irq lines from the CPU to the
* GIC PPI inputs used on the A15:
*/
const int timer_irq[] = {
[GTIMER_PHYS] = 30,
[GTIMER_VIRT] = 27,
[GTIMER_HYP] = 26,
[GTIMER_SEC] = 29,
};
for (irq = 0; irq < ARRAY_SIZE(timer_irq); irq++) {
qdev_connect_gpio_out(cpudev, irq,
qdev_get_gpio_in(gicdev,
ppibase + timer_irq[irq]));
}
if (has_el2) {
/* Connect the GIC maintenance interrupt to PPI ID 25 */
sysbus_connect_irq(SYS_BUS_DEVICE(gicdev), i + 4 * s->num_cpu,
qdev_get_gpio_in(gicdev, ppibase + 25));
}
}
/* Memory map (addresses are offsets from PERIPHBASE):
* 0x0000-0x0fff -- reserved
* 0x1000-0x1fff -- GIC Distributor
* 0x2000-0x3fff -- GIC CPU interface
* 0x4000-0x4fff -- GIC virtual interface control for this CPU
* 0x5000-0x51ff -- GIC virtual interface control for CPU 0
* 0x5200-0x53ff -- GIC virtual interface control for CPU 1
* 0x5400-0x55ff -- GIC virtual interface control for CPU 2
* 0x5600-0x57ff -- GIC virtual interface control for CPU 3
* 0x6000-0x7fff -- GIC virtual CPU interface
*/
memory_region_add_subregion(&s->container, 0x1000,
sysbus_mmio_get_region(busdev, 0));
memory_region_add_subregion(&s->container, 0x2000,
sysbus_mmio_get_region(busdev, 1));
if (has_el2) {
memory_region_add_subregion(&s->container, 0x4000,
sysbus_mmio_get_region(busdev, 2));
memory_region_add_subregion(&s->container, 0x6000,
sysbus_mmio_get_region(busdev, 3));
for (i = 0; i < s->num_cpu; i++) {
hwaddr base = 0x5000 + i * 0x200;
MemoryRegion *mr = sysbus_mmio_get_region(busdev,
4 + s->num_cpu + i);
memory_region_add_subregion(&s->container, base, mr);
}
}
}
static Property a15mp_priv_properties[] = {
DEFINE_PROP_UINT32("num-cpu", A15MPPrivState, num_cpu, 1),
/* The Cortex-A15MP may have anything from 0 to 224 external interrupt
* IRQ lines (with another 32 internal). We default to 128+32, which
* is the number provided by the Cortex-A15MP test chip in the
* Versatile Express A15 development board.
* Other boards may differ and should set this property appropriately.
*/
DEFINE_PROP_UINT32("num-irq", A15MPPrivState, num_irq, 160),
DEFINE_PROP_END_OF_LIST(),
};
static void a15mp_priv_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = a15mp_priv_realize;
device_class_set_props(dc, a15mp_priv_properties);
/* We currently have no savable state */
}
static const TypeInfo a15mp_priv_info = {
.name = TYPE_A15MPCORE_PRIV,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(A15MPPrivState),
.instance_init = a15mp_priv_initfn,
.class_init = a15mp_priv_class_init,
};
static void a15mp_register_types(void)
{
type_register_static(&a15mp_priv_info);
}
type_init(a15mp_register_types)