[RFC PATCH 1/2] target/alpha: Expose TMR and SMP IRQ lines via QDev

[Philippe Mathieu-Daudé]

In order to remove calls to cpu_interrupt() from hw/ code,
expose the TMR and SMP interrupts via QDev as named GPIOs.

Signed-off-by: Philippe Mathieu-Daudé <phi...@linaro.org>
---
 target/alpha/cpu.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/target/alpha/cpu.c b/target/alpha/cpu.c
index bf70173a25..619cd54593 100644
--- a/target/alpha/cpu.c
+++ b/target/alpha/cpu.c
@@ -25,6 +25,31 @@
 #include "cpu.h"
 #include "exec/exec-all.h"
 
+#ifndef CONFIG_USER_ONLY
+static void alpha_cpu_tmr_irq(void *opaque, int irq, int level)
+{
+    DeviceState *dev = opaque;
+    CPUState *cs = CPU(dev);
+
+    if (level) {
+        cs->interrupt_request |= CPU_INTERRUPT_TIMER;
+    } else {
+        cs->interrupt_request &= ~CPU_INTERRUPT_TIMER;
+    }
+}
+
+static void alpha_cpu_smp_irq(void *opaque, int irq, int level)
+{
+    DeviceState *dev = opaque;
+    CPUState *cs = CPU(dev);
+
+    if (level) {
+        cs->interrupt_request |= CPU_INTERRUPT_SMP;
+    } else {
+        cs->interrupt_request &= ~CPU_INTERRUPT_SMP;
+    }
+}
+#endif
 
 static void alpha_cpu_set_pc(CPUState *cs, vaddr value)
 {
@@ -89,6 +114,11 @@ static void alpha_cpu_realizefn(DeviceState *dev, Error 
**errp)
 
     qemu_init_vcpu(cs);
 
+#ifndef CONFIG_USER_ONLY
+    qdev_init_gpio_in_named(dev, alpha_cpu_tmr_irq, "TMR", 1);
+    qdev_init_gpio_in_named(dev, alpha_cpu_smp_irq, "SMP", 1);
+#endif
+
     acc->parent_realize(dev, errp);
 }
 
-- 
2.41.0