qemu/hw/cpu/a9mpcore.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

195 lines
6.6 KiB
C

/*
* Cortex-A9MPCore internal peripheral emulation.
*
* Copyright (c) 2009 CodeSourcery.
* Copyright (c) 2011 Linaro Limited.
* Written by Paul Brook, Peter Maydell.
*
* This code is licensed under the GPL.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu/module.h"
#include "hw/cpu/a9mpcore.h"
#include "hw/irq.h"
#include "hw/qdev-properties.h"
#include "hw/core/cpu.h"
#include "cpu.h"
#define A9_GIC_NUM_PRIORITY_BITS 5
static void a9mp_priv_set_irq(void *opaque, int irq, int level)
{
A9MPPrivState *s = (A9MPPrivState *)opaque;
qemu_set_irq(qdev_get_gpio_in(DEVICE(&s->gic), irq), level);
}
static void a9mp_priv_initfn(Object *obj)
{
A9MPPrivState *s = A9MPCORE_PRIV(obj);
memory_region_init(&s->container, obj, "a9mp-priv-container", 0x2000);
sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->container);
object_initialize_child(obj, "scu", &s->scu, TYPE_A9_SCU);
object_initialize_child(obj, "gic", &s->gic, TYPE_ARM_GIC);
object_initialize_child(obj, "gtimer", &s->gtimer, TYPE_A9_GTIMER);
object_initialize_child(obj, "mptimer", &s->mptimer, TYPE_ARM_MPTIMER);
object_initialize_child(obj, "wdt", &s->wdt, TYPE_ARM_MPTIMER);
}
static void a9mp_priv_realize(DeviceState *dev, Error **errp)
{
SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
A9MPPrivState *s = A9MPCORE_PRIV(dev);
DeviceState *scudev, *gicdev, *gtimerdev, *mptimerdev, *wdtdev;
SysBusDevice *scubusdev, *gicbusdev, *gtimerbusdev, *mptimerbusdev,
*wdtbusdev;
int i;
bool has_el3;
CPUState *cpu0;
Object *cpuobj;
cpu0 = qemu_get_cpu(0);
cpuobj = OBJECT(cpu0);
if (strcmp(object_get_typename(cpuobj), ARM_CPU_TYPE_NAME("cortex-a9"))) {
/* We might allow Cortex-A5 once we model it */
error_setg(errp,
"Cortex-A9MPCore peripheral can only use Cortex-A9 CPU");
return;
}
scudev = DEVICE(&s->scu);
qdev_prop_set_uint32(scudev, "num-cpu", s->num_cpu);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->scu), errp)) {
return;
}
scubusdev = SYS_BUS_DEVICE(&s->scu);
gicdev = DEVICE(&s->gic);
qdev_prop_set_uint32(gicdev, "num-cpu", s->num_cpu);
qdev_prop_set_uint32(gicdev, "num-irq", s->num_irq);
qdev_prop_set_uint32(gicdev, "num-priority-bits",
A9_GIC_NUM_PRIORITY_BITS);
/* Make the GIC's TZ support match the CPUs. We assume that
* either all the CPUs have TZ, or none do.
*/
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);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->gic), errp)) {
return;
}
gicbusdev = SYS_BUS_DEVICE(&s->gic);
/* Pass through outbound IRQ lines from the GIC */
sysbus_pass_irq(sbd, gicbusdev);
/* Pass through inbound GPIO lines to the GIC */
qdev_init_gpio_in(dev, a9mp_priv_set_irq, s->num_irq - 32);
gtimerdev = DEVICE(&s->gtimer);
qdev_prop_set_uint32(gtimerdev, "num-cpu", s->num_cpu);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->gtimer), errp)) {
return;
}
gtimerbusdev = SYS_BUS_DEVICE(&s->gtimer);
mptimerdev = DEVICE(&s->mptimer);
qdev_prop_set_uint32(mptimerdev, "num-cpu", s->num_cpu);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->mptimer), errp)) {
return;
}
mptimerbusdev = SYS_BUS_DEVICE(&s->mptimer);
wdtdev = DEVICE(&s->wdt);
qdev_prop_set_uint32(wdtdev, "num-cpu", s->num_cpu);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->wdt), errp)) {
return;
}
wdtbusdev = SYS_BUS_DEVICE(&s->wdt);
/* Memory map (addresses are offsets from PERIPHBASE):
* 0x0000-0x00ff -- Snoop Control Unit
* 0x0100-0x01ff -- GIC CPU interface
* 0x0200-0x02ff -- Global Timer
* 0x0300-0x05ff -- nothing
* 0x0600-0x06ff -- private timers and watchdogs
* 0x0700-0x0fff -- nothing
* 0x1000-0x1fff -- GIC Distributor
*/
memory_region_add_subregion(&s->container, 0,
sysbus_mmio_get_region(scubusdev, 0));
/* GIC CPU interface */
memory_region_add_subregion(&s->container, 0x100,
sysbus_mmio_get_region(gicbusdev, 1));
memory_region_add_subregion(&s->container, 0x200,
sysbus_mmio_get_region(gtimerbusdev, 0));
/* Note that the A9 exposes only the "timer/watchdog for this core"
* memory region, not the "timer/watchdog for core X" ones 11MPcore has.
*/
memory_region_add_subregion(&s->container, 0x600,
sysbus_mmio_get_region(mptimerbusdev, 0));
memory_region_add_subregion(&s->container, 0x620,
sysbus_mmio_get_region(wdtbusdev, 0));
memory_region_add_subregion(&s->container, 0x1000,
sysbus_mmio_get_region(gicbusdev, 0));
/* Wire up the interrupt from each watchdog and timer.
* For each core the global timer is PPI 27, the private
* timer is PPI 29 and the watchdog PPI 30.
*/
for (i = 0; i < s->num_cpu; i++) {
int ppibase = (s->num_irq - 32) + i * 32;
sysbus_connect_irq(gtimerbusdev, i,
qdev_get_gpio_in(gicdev, ppibase + 27));
sysbus_connect_irq(mptimerbusdev, i,
qdev_get_gpio_in(gicdev, ppibase + 29));
sysbus_connect_irq(wdtbusdev, i,
qdev_get_gpio_in(gicdev, ppibase + 30));
}
}
static Property a9mp_priv_properties[] = {
DEFINE_PROP_UINT32("num-cpu", A9MPPrivState, num_cpu, 1),
/* The Cortex-A9MP may have anything from 0 to 224 external interrupt
* IRQ lines (with another 32 internal). We default to 64+32, which
* is the number provided by the Cortex-A9MP test chip in the
* Realview PBX-A9 and Versatile Express A9 development boards.
* Other boards may differ and should set this property appropriately.
*/
DEFINE_PROP_UINT32("num-irq", A9MPPrivState, num_irq, 96),
DEFINE_PROP_END_OF_LIST(),
};
static void a9mp_priv_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = a9mp_priv_realize;
device_class_set_props(dc, a9mp_priv_properties);
}
static const TypeInfo a9mp_priv_info = {
.name = TYPE_A9MPCORE_PRIV,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(A9MPPrivState),
.instance_init = a9mp_priv_initfn,
.class_init = a9mp_priv_class_init,
};
static void a9mp_register_types(void)
{
type_register_static(&a9mp_priv_info);
}
type_init(a9mp_register_types)