haraldwolff/qemu-patch-raspberry4
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PPC: openpic_kvm: Implement reset

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When we trigger a system reset, the in-kernel openpic controller should also
get reset. This happens through a write to the GCR.RESET register which is
the same mechanism a guest would use to manually reset the device.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf 2014-05-22 17:12:23 +02:00
parent ffd5e9fe02
commit af354f19a9
1 changed files with 10 additions and 5 deletions
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15
hw/intc/openpic_kvm.c
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@ -31,6 +31,8 @@
#include "sysemu/kvm.h"
#include "qemu/log.h"
#define GCR_RESET 0x80000000
#define KVM_OPENPIC(obj) \
OBJECT_CHECK(KVMOpenPICState, (obj), TYPE_KVM_OPENPIC)
@ -50,11 +52,6 @@ static void kvm_openpic_set_irq(void *opaque, int n_IRQ, int level)
kvm_set_irq(kvm_state, n_IRQ, level);
}
static void kvm_openpic_reset(DeviceState *d)
{
qemu_log_mask(LOG_UNIMP, "%s: unimplemented\n", __func__);
}
static void kvm_openpic_write(void *opaque, hwaddr addr, uint64_t val,
unsigned size)
{
@ -74,6 +71,14 @@ static void kvm_openpic_write(void *opaque, hwaddr addr, uint64_t val,
}
}
static void kvm_openpic_reset(DeviceState *d)
{
KVMOpenPICState *opp = KVM_OPENPIC(d);
/* Trigger the GCR.RESET bit to reset the PIC */
kvm_openpic_write(opp, 0x1020, GCR_RESET, sizeof(uint32_t));
}
static uint64_t kvm_openpic_read(void *opaque, hwaddr addr, unsigned size)
{
KVMOpenPICState *opp = opaque;