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hw/intc/loongarch_ipi: Add kernel irqchip realize function

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Function kvm_ipi_realize() is added if kvm_irqchip_in_kernel() return true.
It is to create and initialize IPI device in kernel mode.

Reviewed-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Message-ID: <20250606063033.2557365-4-maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
This commit is contained in:
Bibo Mao 2025-06-06 14:30:23 +08:00 • committed by Song Gao
parent 228c5413fb
commit 412f655566
5 changed files with 42 additions and 0 deletions
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5
hw/intc/loongarch_ipi.c
View file

@ -11,6 +11,7 @@
#include "qapi/error.h"
#include "hw/intc/loongarch_ipi.h"
#include "hw/qdev-properties.h"
#include "system/kvm.h"
#include "target/loongarch/cpu.h"
static AddressSpace *get_iocsr_as(CPUState *cpu)
@ -91,6 +92,10 @@ static void loongarch_ipi_realize(DeviceState *dev, Error **errp)
lics->cpu[i].ipi = lics;
qdev_init_gpio_out(dev, &lics->cpu[i].irq, 1);
}
if (kvm_irqchip_in_kernel()) {
kvm_ipi_realize(dev, errp);
}
}
static void loongarch_ipi_reset_hold(Object *obj, ResetType type)

27
hw/intc/loongarch_ipi_kvm.c Normal file
View file

@ -0,0 +1,27 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* LoongArch IPI interrupt KVM support
*
* Copyright (C) 2025 Loongson Technology Corporation Limited
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "hw/intc/loongarch_ipi.h"
#include "system/kvm.h"
#include "target/loongarch/cpu.h"
void kvm_ipi_realize(DeviceState *dev, Error **errp)
{
LoongarchIPIState *lis = LOONGARCH_IPI(dev);
int ret;
ret = kvm_create_device(kvm_state, KVM_DEV_TYPE_LOONGARCH_IPI, false);
if (ret < 0) {
fprintf(stderr, "IPI KVM_CREATE_DEVICE failed: %s\n",
strerror(-ret));
abort();
}
lis->dev_fd = ret;
}

5
hw/intc/loongson_ipi_common.c
View file

@ -11,6 +11,7 @@
#include "hw/irq.h"
#include "qemu/log.h"
#include "migration/vmstate.h"
#include "system/kvm.h"
#include "trace.h"
MemTxResult loongson_ipi_core_readl(void *opaque, hwaddr addr, uint64_t *data,
@ -255,6 +256,10 @@ static void loongson_ipi_common_realize(DeviceState *dev, Error **errp)
LoongsonIPICommonState *s = LOONGSON_IPI_COMMON(dev);
SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
if (kvm_irqchip_in_kernel()) {
return;
}
memory_region_init_io(&s->ipi_iocsr_mem, OBJECT(dev),
&loongson_ipi_iocsr_ops,
s, "loongson_ipi_iocsr", 0x48);

2
hw/intc/meson.build
View file

@ -71,6 +71,8 @@ specific_ss.add(when: 'CONFIG_M68K_IRQC', if_true: files('m68k_irqc.c'))
specific_ss.add(when: 'CONFIG_LOONGSON_IPI_COMMON', if_true: files('loongson_ipi_common.c'))
specific_ss.add(when: 'CONFIG_LOONGSON_IPI', if_true: files('loongson_ipi.c'))
specific_ss.add(when: 'CONFIG_LOONGARCH_IPI', if_true: files('loongarch_ipi.c'))
specific_ss.add(when: ['CONFIG_KVM', 'CONFIG_LOONGARCH_IPI'],
if_true: files('loongarch_ipi_kvm.c'))
specific_ss.add(when: 'CONFIG_LOONGARCH_PCH_PIC', if_true: files('loongarch_pch_pic.c', 'loongarch_pic_common.c'))
specific_ss.add(when: 'CONFIG_LOONGARCH_PCH_MSI', if_true: files('loongarch_pch_msi.c'))
specific_ss.add(when: 'CONFIG_LOONGARCH_EXTIOI', if_true: files('loongarch_extioi.c', 'loongarch_extioi_common.c'))

3
include/hw/intc/loongarch_ipi.h
View file

@ -16,6 +16,7 @@ OBJECT_DECLARE_TYPE(LoongarchIPIState, LoongarchIPIClass, LOONGARCH_IPI)
struct LoongarchIPIState {
LoongsonIPICommonState parent_obj;
int dev_fd;
};
struct LoongarchIPIClass {
@ -24,4 +25,6 @@ struct LoongarchIPIClass {
ResettablePhases parent_phases;
};
void kvm_ipi_realize(DeviceState *dev, Error **errp);
#endif