diff mbox series

[1/5] target/i386/cpu: Expose SMI# IRQ line via QDev

Message ID 20240226164913.94077-2-philmd@linaro.org
State New
Headers show
Series hw/i386/q35: Decouple virtual SMI# lines and wire them to ICH9 chipset | expand

Commit Message

Philippe Mathieu-Daudé Feb. 26, 2024, 4:49 p.m. UTC 
In order to remove calls to cpu_interrupt() from hw/ code,
expose the SMI# interrupt via QDev as named GPIO.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 target/i386/cpu-internal.h |  1 +
 target/i386/cpu-sysemu.c   | 11 +++++++++++
 target/i386/cpu.c          |  2 ++
 3 files changed, 14 insertions(+)
diff mbox series

Patch

diff --git a/target/i386/cpu-internal.h b/target/i386/cpu-internal.h
index 9baac5c0b4..9d76bb77cf 100644
--- a/target/i386/cpu-internal.h
+++ b/target/i386/cpu-internal.h
@@ -62,6 +62,7 @@  GuestPanicInformation *x86_cpu_get_crash_info(CPUState *cs);
 void x86_cpu_get_crash_info_qom(Object *obj, Visitor *v,
                                 const char *name, void *opaque, Error **errp);
 
+void x86_cpu_smi_irq(void *opaque, int irq, int level);
 void x86_cpu_apic_create(X86CPU *cpu, Error **errp);
 void x86_cpu_apic_realize(X86CPU *cpu, Error **errp);
 void x86_cpu_machine_reset_cb(void *opaque);
diff --git a/target/i386/cpu-sysemu.c b/target/i386/cpu-sysemu.c
index 7422096737..7684a7f01e 100644
--- a/target/i386/cpu-sysemu.c
+++ b/target/i386/cpu-sysemu.c
@@ -370,3 +370,14 @@  void x86_cpu_get_crash_info_qom(Object *obj, Visitor *v,
     qapi_free_GuestPanicInformation(panic_info);
 }
 
+void x86_cpu_smi_irq(void *opaque, int irq, int level)
+{
+    DeviceState *dev = opaque;
+    CPUState *cs = CPU(dev);
+
+    if (level) {
+        cpu_interrupt(cs, CPU_INTERRUPT_SMI);
+    } else {
+        cpu_reset_interrupt(cs, CPU_INTERRUPT_SMI);
+    }
+}
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 7f90823676..6b4462d533 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -7463,6 +7463,8 @@  static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
     }
 
 #ifndef CONFIG_USER_ONLY
+    qdev_init_gpio_in_named(dev, x86_cpu_smi_irq, "SMI", 1);
+
     x86_cpu_apic_realize(cpu, &local_err);
     if (local_err != NULL) {
         goto out;