[PULL,17/24] hw/misc: In STM32L4x5 EXTI, handle direct interrupts

Commit Message

Peter Maydell July 11, 2024, 1:18 p.m. UTC

From: Inès Varhol <[e-mail]>

The previous implementation for EXTI interrupts only handled
"configurable" interrupts, like those originating from STM32L4x5 SYSCFG
(the only device currently connected to the EXTI up until now).

In order to connect STM32L4x5 USART to the EXTI, this commit adds
handling for direct interrupts (interrupts without configurable edge).

Signed-off-by: Inès Varhol <[e-mail]>
Message-id: [e-mail]
Reviewed-by: Peter Maydell <[e-mail]>
Signed-off-by: Peter Maydell <[e-mail]>
---
 hw/misc/stm32l4x5_exti.c | 7 +++++++
 1 file changed, 7 insertions(+)

Patch

diff --git a/hw/misc/stm32l4x5_exti.c b/hw/misc/stm32l4x5_exti.c
index b9a69a69f60..e281841dcf4 100644
--- a/hw/misc/stm32l4x5_exti.c
+++ b/hw/misc/stm32l4x5_exti.c
@@ -113,6 +113,13 @@  static void stm32l4x5_exti_set_irq(void *opaque, int irq, int level)
         return;
     }
 
+    /* In case of a direct line interrupt */
+    if (extract32(exti_romask[bank], irq, 1)) {
+        qemu_set_irq(s->irq[oirq], level);
+        return;
+    }
+
+    /* In case of a configurable interrupt */
     if ((level && extract32(s->rtsr[bank], irq, 1)) ||
         (!level && extract32(s->ftsr[bank], irq, 1))) {