This patch provides a new function to find a carveout according
to a name.
If match found, this function returns a pointer on the corresponding
carveout (rproc_mem_entry structure).
Signed-off-by: Loic Pallardy <loic.pallardy@xxxxxx>
---
drivers/remoteproc/remoteproc_core.c | 42 ++++++++++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index fe6c4e4..77b39ba 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -217,6 +217,48 @@ void *rproc_da_to_va(struct rproc *rproc, u64 da, int len)
}
EXPORT_SYMBOL(rproc_da_to_va);
+/**
+ * rproc_find_carveout_by_name() - lookup the carveout region by a name
+ * @rproc: handle of a remote processor
+ * @name,..: carveout name to find (standard printf format)
+ *
+ * Platform driver has the capability to register some pre-allacoted carveout
+ * (physically contiguous memory regions) before rproc firmware loading and
+ * associated resource table analysis. These regions may be dedicated memory
+ * regions internal to the coprocessor or specified DDR region with specific
+ * attributes
+ *
+ * This function is a helper function with which we can go over the
+ * allocated carveouts and return associated region characteristics like
+ * coprocessor address, length or processor virtual address.
+ *
+ * Return: a valid pointer on carveout entry on success or NULL on failure.
+ */
+struct rproc_mem_entry *
+rproc_find_carveout_by_name(struct rproc *rproc, const char *name, ...)
+{
+ va_list args;
+ char _name[32];
+ struct rproc_mem_entry *carveout, *mem = NULL;
+
+ if (!name)
+ return NULL;
+
+ va_start(args, name);
+ vsnprintf(_name, sizeof(_name), name, args);
+ va_end(args);
+
+ list_for_each_entry(carveout, &rproc->carveouts, node) {
+ /* Compare carveout and requested names */
+ if (!strcmp(carveout->name, _name)) {
+ mem = carveout;
+ break;
+ }
+ }
+
+ return mem;
+}
+
int rproc_alloc_vring(struct rproc_vdev *rvdev, int i)
{
struct rproc *rproc = rvdev->rproc;
--
1.9.1
--
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