From ab8f873bb90da7bbe40e2f41c92a4971c4f0dc76 Mon Sep 17 00:00:00 2001 From: Sibi Sankar Date: Wed, 17 Oct 2018 19:25:24 +0530 Subject: 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 [bjorn: reordred arguments to rproc_coredump_add_custom_segment()] Signed-off-by: Bjorn Andersson --- drivers/remoteproc/remoteproc_core.c | 38 ++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) (limited to 'drivers/remoteproc') 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 @@ -1446,6 +1446,44 @@ 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 -- cgit v1.2.3