lkml.org 
[lkml]   [2017]   [Nov]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 11/16] remoteproc: introduce rproc_find_carveout_by_name function
Date
This patch provides a new function to find a carveout according
to a name.
If match found, this function returns a point on the corresponding
carveout.

Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
---
drivers/remoteproc/remoteproc_core.c | 36 ++++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 2b7effb..8d990b1 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -367,6 +367,42 @@ void *rproc_find_carveout_by_da(struct rproc *rproc, u64 da, int len)
return va;
}

+/**
+ * rproc_find_carveout_by_name() - lookup the carveout region by a name
+ * @rproc: handle of a remote processor
+ * @name: carveout name to find
+ *
+ * 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.
+ *
+ * The function returns a valid pointer on carveout entry on success or NULL on failure.
+ */
+struct rproc_mem_entry *
+rproc_find_carveout_by_name(struct rproc *rproc, char *name)
+{
+ struct rproc_mem_entry *carveout, *mem = NULL;
+
+ if (!name)
+ return NULL;
+
+ 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
\
 
 \ /
  Last update: 2017-11-30 17:48    [W:0.300 / U:6.624 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site