1// SPDX-License-Identifier: ISC
 2/*
 3 * Copyright (c) 2012 Broadcom Corporation
 4 */
 5#include <linux/debugfs.h>
 6#include <linux/netdevice.h>
 7#include <linux/module.h>
 8#include <linux/devcoredump.h>
 9
10#include <brcmu_wifi.h>
11#include <brcmu_utils.h>
12#include "core.h"
13#include "bus.h"
14#include "fweh.h"
15#include "debug.h"
16
17int brcmf_debug_create_memdump(struct brcmf_bus *bus, const void *data,
18			       size_t len)
19{
20	void *dump;
21	size_t ramsize;
22	int err;
23
24	ramsize = brcmf_bus_get_ramsize(bus);
25	if (!ramsize)
26		return -ENOTSUPP;
27
28	dump = vzalloc(len + ramsize);
29	if (!dump)
30		return -ENOMEM;
31
32	if (data && len > 0)
33		memcpy(dump, data, len);
34	err = brcmf_bus_get_memdump(bus, dump + len, ramsize);
35	if (err) {
36		vfree(dump);
37		return err;
38	}
39
40	dev_coredumpv(bus->dev, dump, len + ramsize, GFP_KERNEL);
41
42	return 0;
43}
44
45struct dentry *brcmf_debugfs_get_devdir(struct brcmf_pub *drvr)
46{
47	return drvr->wiphy->debugfsdir;
48}
49
50void brcmf_debugfs_add_entry(struct brcmf_pub *drvr, const char *fn,
51			    int (*read_fn)(struct seq_file *seq, void *data))
52{
53	WARN(!drvr->wiphy->debugfsdir, "wiphy not (yet) registered\n");
54	debugfs_create_devm_seqfile(drvr->bus_if->dev, fn,
55				    drvr->wiphy->debugfsdir, read_fn);
56}