drivers/remoteproc/remoteproc_coredump.c

Source file repositories/reference/linux-study-clean/drivers/remoteproc/remoteproc_coredump.c

File Facts

System
Linux kernel
Corpus path
drivers/remoteproc/remoteproc_coredump.c
Extension
.c
Size
13858 bytes
Lines
472
Domain
Driver Families
Bucket
drivers/remoteproc
Inferred role
Driver Families: exported/initcall integration point
Status
integration implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct rproc_coredump_state {
	struct rproc *rproc;
	void *header;
	struct completion dump_done;
};

/**
 * rproc_coredump_cleanup() - clean up dump_segments list
 * @rproc: the remote processor handle
 */
void rproc_coredump_cleanup(struct rproc *rproc)
{
	struct rproc_dump_segment *entry, *tmp;

	list_for_each_entry_safe(entry, tmp, &rproc->dump_segments, node) {
		list_del(&entry->node);
		kfree(entry);
	}
}
EXPORT_SYMBOL_GPL(rproc_coredump_cleanup);

/**
 * rproc_coredump_add_segment() - add segment of device memory to coredump
 * @rproc:	handle of a remote processor
 * @da:		device address
 * @size:	size of segment
 *
 * Add device memory to the list of segments to be included in a coredump for
 * the remoteproc.
 *
 * Return: 0 on success, negative errno on error.
 */
int rproc_coredump_add_segment(struct rproc *rproc, dma_addr_t da, size_t size)
{
	struct rproc_dump_segment *segment;

	segment = kzalloc_obj(*segment);
	if (!segment)
		return -ENOMEM;

	segment->da = da;
	segment->size = size;

	list_add_tail(&segment->node, &rproc->dump_segments);

	return 0;
}
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, size_t offset,
						     size_t size),
				      void *priv)
{
	struct rproc_dump_segment *segment;

	segment = kzalloc_obj(*segment);
	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_set_elf_info() - set coredump elf information

Annotation

Implementation Notes