This function allows to change the forwarded mode and selects
the IRQ handler accordingly.
Signed-off-by: Eric Auger <eric.au...@linaro.org>
---
v3 -> v3:
- renamed vfio_platform_set_automasked into
vfio_platform_set_forwarded
- do not change VFIO_IRQ_INFO_AUTOMASKED setting when turning
forwarding on/off
v1 -> v2:
- set forwarded flag
---
drivers/vfio/platform/vfio_platform_irq.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/vfio/platform/vfio_platform_irq.c
b/drivers/vfio/platform/vfio_platform_irq.c
index c58e0ad..257200b 100644
--- a/drivers/vfio/platform/vfio_platform_irq.c
+++ b/drivers/vfio/platform/vfio_platform_irq.c
@@ -186,6 +186,23 @@ static irqreturn_t vfio_handler(int irq, void *dev_id)
return ret;
}
+static int vfio_platform_set_forwarded(struct vfio_platform_irq *irq,
+ bool forwarded)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&irq->lock, flags);
+ irq->forwarded = forwarded;
+
+ if (!forwarded && (irq->flags & VFIO_IRQ_INFO_AUTOMASKED))
+ irq->handler = vfio_automasked_irq_handler;
+ else
+ irq->handler = vfio_irq_handler;
+
+ spin_unlock_irqrestore(&irq->lock, flags);
+ return 0;
+}
+
static void vfio_platform_irq_bypass_stop(struct irq_bypass_producer *prod)
{
}
--
1.9.1
--
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