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target/riscv: Add sifive_plic vmstate 

Add sifive_plic vmstate for supporting sifive_plic migration.
Current vmstate framework only supports one structure parameter
as num field to describe variable length arrays, so introduce
num_enables.

Signed-off-by: Yifei Jiang <jiangyifei@huawei.com>
Signed-off-by: Yipeng Yin <yinyipeng1@huawei.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20201026115530.304-7-jiangyifei@huawei.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Yifei Jiang 2020-10-26 19:55:30 +08:00 committed by Alistair Francis
parent bb02edcd86
commit dbd3ec548a
2 changed files with 26 additions and 1 deletions
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26
hw/intc/sifive_plic.c
View File

@ -30,6 +30,7 @@
#include "hw/intc/sifive_plic.h"
#include "target/riscv/cpu.h"
#include "sysemu/sysemu.h"
#include "migration/vmstate.h"
#define RISCV_DEBUG_PLIC 0
@ -448,11 +449,12 @@ static void sifive_plic_realize(DeviceState *dev, Error **errp)
TYPE_SIFIVE_PLIC, plic->aperture_size);
parse_hart_config(plic);
plic->bitfield_words = (plic->num_sources + 31) >> 5;
plic->num_enables = plic->bitfield_words * plic->num_addrs;
plic->source_priority = g_new0(uint32_t, plic->num_sources);
plic->target_priority = g_new(uint32_t, plic->num_addrs);
plic->pending = g_new0(uint32_t, plic->bitfield_words);
plic->claimed = g_new0(uint32_t, plic->bitfield_words);
plic->enable = g_new0(uint32_t, plic->bitfield_words * plic->num_addrs);
plic->enable = g_new0(uint32_t, plic->num_enables);
sysbus_init_mmio(SYS_BUS_DEVICE(dev), &plic->mmio);
qdev_init_gpio_in(dev, sifive_plic_irq_request, plic->num_sources);
@ -472,12 +474,34 @@ static void sifive_plic_realize(DeviceState *dev, Error **errp)
msi_nonbroken = true;
}
static const VMStateDescription vmstate_sifive_plic = {
.name = "riscv_sifive_plic",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_VARRAY_UINT32(source_priority, SiFivePLICState,
num_sources, 0,
vmstate_info_uint32, uint32_t),
VMSTATE_VARRAY_UINT32(target_priority, SiFivePLICState,
num_addrs, 0,
vmstate_info_uint32, uint32_t),
VMSTATE_VARRAY_UINT32(pending, SiFivePLICState, bitfield_words, 0,
vmstate_info_uint32, uint32_t),
VMSTATE_VARRAY_UINT32(claimed, SiFivePLICState, bitfield_words, 0,
vmstate_info_uint32, uint32_t),
VMSTATE_VARRAY_UINT32(enable, SiFivePLICState, num_enables, 0,
vmstate_info_uint32, uint32_t),
VMSTATE_END_OF_LIST()
}
};
static void sifive_plic_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
device_class_set_props(dc, sifive_plic_properties);
dc->realize = sifive_plic_realize;
dc->vmsd = &vmstate_sifive_plic;
}
static const TypeInfo sifive_plic_info = {

1
include/hw/intc/sifive_plic.h
View File

@ -52,6 +52,7 @@ struct SiFivePLICState {
uint32_t num_addrs;
uint32_t num_harts;
uint32_t bitfield_words;
uint32_t num_enables;
PLICAddr *addr_config;
uint32_t *source_priority;
uint32_t *target_priority;