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
brcmf_debug_create_memdump(struct brcmf_bus * bus,const void * data,size_t len)17 int brcmf_debug_create_memdump(struct brcmf_bus *bus, const void *data,
18 size_t len)
19 {
20 #if defined(__linux__)
21 void *dump;
22 #elif defined(__FreeBSD__)
23 u8 *dump;
24 #endif
25 size_t ramsize;
26 int err;
27
28 ramsize = brcmf_bus_get_ramsize(bus);
29 if (!ramsize)
30 return -ENOTSUPP;
31
32 dump = vzalloc(len + ramsize);
33 if (!dump)
34 return -ENOMEM;
35
36 if (data && len > 0)
37 memcpy(dump, data, len);
38 err = brcmf_bus_get_memdump(bus, dump + len, ramsize);
39 if (err) {
40 vfree(dump);
41 return err;
42 }
43
44 dev_coredumpv(bus->dev, dump, len + ramsize, GFP_KERNEL);
45
46 return 0;
47 }
48
brcmf_debugfs_get_devdir(struct brcmf_pub * drvr)49 struct dentry *brcmf_debugfs_get_devdir(struct brcmf_pub *drvr)
50 {
51 return drvr->wiphy->debugfsdir;
52 }
53
brcmf_debugfs_add_entry(struct brcmf_pub * drvr,const char * fn,int (* read_fn)(struct seq_file * seq,void * data))54 void brcmf_debugfs_add_entry(struct brcmf_pub *drvr, const char *fn,
55 int (*read_fn)(struct seq_file *seq, void *data))
56 {
57 WARN(!drvr->wiphy->debugfsdir, "wiphy not (yet) registered\n");
58 #if defined(__linux__)
59 debugfs_create_devm_seqfile(drvr->bus_if->dev, fn,
60 drvr->wiphy->debugfsdir, read_fn);
61 #elif defined(__FreeBSD__)
62 pr_debug("%s: TODO\n", __func__);
63 #endif
64 }
65