Add support to rproc_vq_interrupt() for a notifyid of -1 which will cause
all valid virtqueues to be processed.
Signed-off-by: Robert Tivy <rt...@ti.com>
---
drivers/remoteproc/remoteproc_virtio.c | 34 ++++++++++++++++++++++++++++----
1 file changed, 30 insertions(+), 4 deletions(-)
diff --git a/drivers/remoteproc/remoteproc_virtio.c
b/drivers/remoteproc/remoteproc_virtio.c
index 9e198e5..07fa6cb 100644
--- a/drivers/remoteproc/remoteproc_virtio.c
+++ b/drivers/remoteproc/remoteproc_virtio.c
@@ -41,6 +41,21 @@ static void rproc_virtio_notify(struct virtqueue *vq)
rproc->ops->kick(rproc, notifyid);
}
+/* processing function when iterating all virtqueues */
+static int rproc_vring_interrupt(int id, void *p, void *data)
+{
+ struct rproc_vring *rvring = (struct rproc_vring *)p;
+ irqreturn_t *retp = (irqreturn_t *)data;
+
+ if (!rvring->vq)
+ return 0;
+
+ if (vring_interrupt(0, rvring->vq) == IRQ_HANDLED)
+ *retp = IRQ_HANDLED;
+
+ return 0;
+}
+
/**
* rproc_vq_interrupt() - tell remoteproc that a virtqueue is interrupted
* @rproc: handle to the remote processor
@@ -52,18 +67,29 @@ static void rproc_virtio_notify(struct virtqueue *vq)
*
* Returns IRQ_NONE if no message was found in the @notifyid virtqueue,
* and otherwise returns IRQ_HANDLED.
+ *
+ * A @notifyid value of -1 can be passed in order to signal all available
+ * virtqueues for this @rproc. In this case this function returns IRQ_HANDLED
+ * if any virtqueue contained a message, and IRQ_NONE if none of them did.
*/
irqreturn_t rproc_vq_interrupt(struct rproc *rproc, int notifyid)
{
struct rproc_vring *rvring;
+ irqreturn_t ret = IRQ_NONE;
dev_dbg(&rproc->dev, "vq index %d is interrupted\n", notifyid);
- rvring = idr_find(&rproc->notifyids, notifyid);
- if (!rvring || !rvring->vq)
- return IRQ_NONE;
+ if (notifyid >= 0) {
+ rvring = idr_find(&rproc->notifyids, notifyid);
+ if (!rvring || !rvring->vq)
+ return IRQ_NONE;
- return vring_interrupt(0, rvring->vq);
+ return vring_interrupt(0, rvring->vq);
+ } else {
+ idr_for_each(&rproc->notifyids, rproc_vring_interrupt, &ret);
+ }
+
+ return ret;
}
EXPORT_SYMBOL(rproc_vq_interrupt);
--
1.7.9.4
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