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authorSibi Sankar <sibis@codeaurora.org>2018-10-17 16:55:24 +0300
committerBjorn Andersson <bjorn.andersson@linaro.org>2018-10-19 22:53:55 +0300
commitab8f873bb90da7bbe40e2f41c92a4971c4f0dc76 (patch)
treeabfeb259626b278bf5cd7bf2df13e57d9a894a8e /drivers/remoteproc
parent3952105df4723abbd36b57e88c8dad42cf6c8b59 (diff)
downloadlinux-ab8f873bb90da7bbe40e2f41c92a4971c4f0dc76.tar.xz
remoteproc: Add mechanism for custom dump function assignment
This patch adds a mechanism for assigning each rproc dump segment with a custom dump function and private data. The dump function is to be called for each rproc segment during coredump if assigned. Signed-off-by: Sibi Sankar <sibis@codeaurora.org> [bjorn: reordred arguments to rproc_coredump_add_custom_segment()] Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/remoteproc')
-rw-r--r--drivers/remoteproc/remoteproc_core.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 6bed40d01dbf..54ec38fc5dca 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -1447,6 +1447,44 @@ int rproc_coredump_add_segment(struct rproc *rproc, dma_addr_t da, size_t size)
EXPORT_SYMBOL(rproc_coredump_add_segment);
/**
+ * rproc_coredump_add_custom_segment() - add custom coredump segment
+ * @rproc: handle of a remote processor
+ * @da: device address
+ * @size: size of segment
+ * @dumpfn: custom dump function called for each segment during coredump
+ * @priv: private data
+ *
+ * Add device memory to the list of segments to be included in the coredump
+ * and associate the segment with the given custom dump function and private
+ * data.
+ *
+ * Return: 0 on success, negative errno on error.
+ */
+int rproc_coredump_add_custom_segment(struct rproc *rproc,
+ dma_addr_t da, size_t size,
+ void (*dumpfn)(struct rproc *rproc,
+ struct rproc_dump_segment *segment,
+ void *dest),
+ void *priv)
+{
+ struct rproc_dump_segment *segment;
+
+ segment = kzalloc(sizeof(*segment), GFP_KERNEL);
+ if (!segment)
+ return -ENOMEM;
+
+ segment->da = da;
+ segment->size = size;
+ segment->priv = priv;
+ segment->dump = dumpfn;
+
+ list_add_tail(&segment->node, &rproc->dump_segments);
+
+ return 0;
+}
+EXPORT_SYMBOL(rproc_coredump_add_custom_segment);
+
+/**
* rproc_coredump() - perform coredump
* @rproc: rproc handle
*