Only support supervisor external interrupt currently.
Signed-off-by: Yifei Jiang <jiangyifei(a)huawei.com>
Signed-off-by: Yipeng Yin <yinyipeng1(a)huawei.com>
---
hw/riscv/sifive_plic.c | 31 ++++++++++++++++++++++---------
target/riscv/kvm.c | 19 +++++++++++++++++++
target/riscv/kvm_riscv.h | 1 +
3 files changed, 42 insertions(+), 9 deletions(-)
diff --git a/hw/riscv/sifive_plic.c b/hw/riscv/sifive_plic.c
index c20c192034..9c5a131e0f 100644
--- a/hw/riscv/sifive_plic.c
+++ b/hw/riscv/sifive_plic.c
@@ -30,6 +30,8 @@
#include "target/riscv/cpu.h"
#include "sysemu/sysemu.h"
#include "hw/riscv/sifive_plic.h"
+#include "sysemu/kvm.h"
+#include "kvm_riscv.h"
#define RISCV_DEBUG_PLIC 0
@@ -146,15 +148,26 @@ static void sifive_plic_update(SiFivePLICState *plic)
continue;
}
int level = sifive_plic_irqs_pending(plic, addrid);
- switch (mode) {
- case PLICMode_M:
- riscv_cpu_update_mip(RISCV_CPU(cpu), MIP_MEIP, BOOL_TO_MASK(level));
- break;
- case PLICMode_S:
- riscv_cpu_update_mip(RISCV_CPU(cpu), MIP_SEIP, BOOL_TO_MASK(level));
- break;
- default:
- break;
+ if (kvm_enabled()) {
+ if (mode == PLICMode_M) {
+ continue;
+ }
+#ifdef CONFIG_KVM
+ kvm_riscv_set_irq(RISCV_CPU(cpu), IRQ_S_EXT, level);
+#endif
+ } else {
+ switch (mode) {
+ case PLICMode_M:
+ riscv_cpu_update_mip(RISCV_CPU(cpu),
+ MIP_MEIP, BOOL_TO_MASK(level));
+ break;
+ case PLICMode_S:
+ riscv_cpu_update_mip(RISCV_CPU(cpu),
+ MIP_SEIP, BOOL_TO_MASK(level));
+ break;
+ default:
+ break;
+ }
}
}
diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c
index 69217add16..d510d23da1 100644
--- a/target/riscv/kvm.c
+++ b/target/riscv/kvm.c
@@ -452,3 +452,22 @@ void kvm_riscv_reset_vcpu(RISCVCPU *cpu)
env->gpr[11] = cpu->env.fdt_addr; /* a1 */
}
+void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level)
+{
+ int ret;
+ unsigned virq = level ? KVM_INTERRUPT_SET : KVM_INTERRUPT_UNSET;
+
+ if (irq != IRQ_S_EXT) {
+ return;
+ }
+
+ if (!kvm_enabled()) {
+ return;
+ }
+
+ ret = kvm_vcpu_ioctl(CPU(cpu), KVM_INTERRUPT, &virq);
+ if (ret < 0) {
+ perror("Set irq failed");
+ abort();
+ }
+}
diff --git a/target/riscv/kvm_riscv.h b/target/riscv/kvm_riscv.h
index f38c82bf59..ed281bdce0 100644
--- a/target/riscv/kvm_riscv.h
+++ b/target/riscv/kvm_riscv.h
@@ -20,5 +20,6 @@
#define QEMU_KVM_RISCV_H
void kvm_riscv_reset_vcpu(RISCVCPU *cpu);
+void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level);
#endif
--
2.19.1