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hw/loongarch: Implement dintc set irq

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Implement dintc set irq and update CSR_MSGIS.

Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-ID: <20250916122109.749813-9-gaosong@loongson.cn>
This commit is contained in:
Song Gao
2025-09-16 20:21:06 +08:00
parent 386aef3e4a
commit 0d148eaf5a
1 changed files with 30 additions and 2 deletions
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32
hw/intc/loongarch_dintc.c
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@@ -16,6 +16,14 @@
#include "migration/vmstate.h"
#include "trace.h"
#include "hw/qdev-properties.h"
#include "target/loongarch/cpu.h"
#include "qemu/error-report.h"
#include "system/hw_accel.h"
/* msg addr field */
FIELD(MSG_ADDR, IRQ_NUM, 4, 8)
FIELD(MSG_ADDR, CPU_NUM, 12, 8)
FIELD(MSG_ADDR, FIX, 28, 12)
static uint64_t loongarch_dintc_mem_read(void *opaque,
hwaddr addr, unsigned size)
@@ -23,12 +31,32 @@ static uint64_t loongarch_dintc_mem_read(void *opaque,
return 0;
}
static void do_set_vcpu_dintc_irq(CPUState *cs, run_on_cpu_data data)
{
int irq = data.host_int;
CPULoongArchState *env;
env = &LOONGARCH_CPU(cs)->env;
cpu_synchronize_state(cs);
set_bit(irq, (unsigned long *)&env->CSR_MSGIS);
}
static void loongarch_dintc_mem_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
return;
}
int irq_num, cpu_num = 0;
LoongArchDINTCState *s = LOONGARCH_DINTC(opaque);
uint64_t msg_addr = addr + VIRT_DINTC_BASE;
CPUState *cs;
cpu_num = FIELD_EX64(msg_addr, MSG_ADDR, CPU_NUM);
cs = cpu_by_arch_id(cpu_num);
irq_num = FIELD_EX64(msg_addr, MSG_ADDR, IRQ_NUM);
async_run_on_cpu(cs, do_set_vcpu_dintc_irq,
RUN_ON_CPU_HOST_INT(irq_num));
qemu_set_irq(s->cpu[cpu_num].parent_irq, 1);
}
static const MemoryRegionOps loongarch_dintc_ops = {
.read = loongarch_dintc_mem_read,