From: Sjur Brændeland <sjur.brandel...@stericsson.com>
Some of the rproc drivers needs to know the range
of the notification IDs used for notifying the device.
Export a variable in struct rproc holding the
largest allocated notification id.
Signed-off-by: Sjur Brændeland <sjur.brandel...@stericsson.com>
---
Changes since v2:
Use idr_for_each() instead of nested loops.
drivers/remoteproc/remoteproc_core.c | 15 +++++++++++++++
include/linux/remoteproc.h | 2 ++
2 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/drivers/remoteproc/remoteproc_core.c
b/drivers/remoteproc/remoteproc_core.c
index d5c2dbf..b368797 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -215,6 +215,9 @@ int rproc_alloc_vring(struct rproc_vdev *rvdev, int i)
return ret;
}
+ /* Store largest notifyid */
+ rproc->max_notifyid = max(rproc->max_notifyid, notifyid);
+
dev_dbg(dev, "vring%d: va %p dma %x size %x idr %d\n", i, va,
dma, size, notifyid);
@@ -256,13 +259,25 @@ rproc_parse_vring(struct rproc_vdev *rvdev, struct
fw_rsc_vdev *rsc, int i)
return 0;
}
+static int rproc_max_notifyid(int id, void *p, void *data)
+{
+ int *maxid = data;
+ *maxid = max(*maxid, id);
+ return 0;
+}
+
void rproc_free_vring(struct rproc_vring *rvring)
{
+ int maxid = 0;
int size = PAGE_ALIGN(vring_size(rvring->len, rvring->align));
struct rproc *rproc = rvring->rvdev->rproc;
dma_free_coherent(rproc->dev.parent, size, rvring->va, rvring->dma);
idr_remove(&rproc->notifyids, rvring->notifyid);
+
+ /* Find the largest remaining ID*/
+ idr_for_each(&rproc->notifyids, rproc_max_notifyid, &maxid);
+ rproc->max_notifyid = maxid;
}
/**
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
index 131b539..c37e359 100644
--- a/include/linux/remoteproc.h
+++ b/include/linux/remoteproc.h
@@ -382,6 +382,7 @@ enum rproc_state {
* @bootaddr: address of first instruction to boot rproc with (optional)
* @rvdevs: list of remote virtio devices
* @notifyids: idr for dynamically assigning rproc-wide unique notify ids
+ * @max_notifyid: Largest allocated notify id.
* @index: index of this rproc device
*/
struct rproc {
@@ -406,6 +407,7 @@ struct rproc {
struct list_head rvdevs;
struct idr notifyids;
int index;
+ int max_notifyid;
};
/* we currently support only two vrings per rvdev */
--
1.7.5.4
--
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