[PATCH v2 36/54] pl050: switch over from update_irq() function to PS2 device gpio

Mark Cave-Ayland posted 54 patches 3 years, 7 months ago
Maintainers: Richard Henderson <richard.henderson@linaro.org>, Helge Deller <deller@gmx.de>, "Michael S. Tsirkin" <mst@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, Peter Maydell <peter.maydell@linaro.org>, "Hervé Poussineau" <hpoussin@reactos.org>, Aleksandar Rikalo <aleksandar.rikalo@syrmia.com>, "Philippe Mathieu-Daudé" <f4bug@amsat.org>
[PATCH v2 36/54] pl050: switch over from update_irq() function to PS2 device gpio
Posted by Mark Cave-Ayland 3 years, 7 months ago
Add a new pl050_init() function which initialises a qdev input gpio for handling
incoming PS2 IRQs, and then wire up the PS2 device to use it. At the same time
set update_irq() and update_arg to NULL in ps2_kbd_init() and ps2_mouse_init()
to ensure that any accidental attempt to use the legacy update_irq() function will
cause a NULL pointer dereference.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Helge Deller <deller@gmx.de>
---
 hw/input/pl050.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/hw/input/pl050.c b/hw/input/pl050.c
index 66f8c20d9f..c665a4fc99 100644
--- a/hw/input/pl050.c
+++ b/hw/input/pl050.c
@@ -65,7 +65,7 @@ static void pl050_update_irq(PL050State *s)
     qemu_set_irq(s->irq, level);
 }
 
-static void pl050_set_irq(void *opaque, int level)
+static void pl050_set_irq(void *opaque, int n, int level)
 {
     PL050State *s = (PL050State *)opaque;
 
@@ -164,10 +164,12 @@ static void pl050_realize(DeviceState *dev, Error **errp)
     sysbus_init_mmio(sbd, &s->iomem);
     sysbus_init_irq(sbd, &s->irq);
     if (s->is_mouse) {
-        s->dev = ps2_mouse_init(pl050_set_irq, s);
+        s->dev = ps2_mouse_init(NULL, NULL);
     } else {
-        s->dev = ps2_kbd_init(pl050_set_irq, s);
+        s->dev = ps2_kbd_init(NULL, NULL);
     }
+    qdev_connect_gpio_out(DEVICE(s->dev), PS2_DEVICE_IRQ,
+                          qdev_get_gpio_in_named(dev, "ps2-input-irq", 0));
 }
 
 static void pl050_keyboard_init(Object *obj)
@@ -196,6 +198,11 @@ static const TypeInfo pl050_mouse_info = {
     .instance_init = pl050_mouse_init,
 };
 
+static void pl050_init(Object *obj)
+{
+    qdev_init_gpio_in_named(DEVICE(obj), pl050_set_irq, "ps2-input-irq", 1);
+}
+
 static void pl050_class_init(ObjectClass *oc, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
@@ -207,6 +214,7 @@ static void pl050_class_init(ObjectClass *oc, void *data)
 static const TypeInfo pl050_type_info = {
     .name          = TYPE_PL050,
     .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_init = pl050_init,
     .instance_size = sizeof(PL050State),
     .abstract      = true,
     .class_init    = pl050_class_init,
-- 
2.30.2
Re: [PATCH v2 36/54] pl050: switch over from update_irq() function to PS2 device gpio
Posted by Peter Maydell 3 years, 7 months ago
On Fri, 24 Jun 2022 at 14:43, Mark Cave-Ayland
<mark.cave-ayland@ilande.co.uk> wrote:
>
> Add a new pl050_init() function which initialises a qdev input gpio for handling
> incoming PS2 IRQs, and then wire up the PS2 device to use it. At the same time
> set update_irq() and update_arg to NULL in ps2_kbd_init() and ps2_mouse_init()
> to ensure that any accidental attempt to use the legacy update_irq() function will
> cause a NULL pointer dereference.
>
> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
> Acked-by: Helge Deller <deller@gmx.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

thanks
-- PMM