2 * Copyright (c) 2012 Broadcom Corporation
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 #include <linux/debugfs.h>
17 #include <linux/netdevice.h>
18 #include <linux/module.h>
19 #include <linux/devcoredump.h>
21 #include <brcmu_wifi.h>
22 #include <brcmu_utils.h>
28 static struct dentry
*root_folder
;
30 static int brcmf_debug_create_memdump(struct brcmf_bus
*bus
, const void *data
,
36 ramsize
= brcmf_bus_get_ramsize(bus
);
38 dump
= vzalloc(len
+ ramsize
);
41 memcpy(dump
, data
, len
);
42 brcmf_bus_get_memdump(bus
, dump
+ len
, ramsize
);
43 dev_coredumpv(bus
->dev
, dump
, len
+ ramsize
, GFP_KERNEL
);
48 static int brcmf_debug_psm_watchdog_notify(struct brcmf_if
*ifp
,
49 const struct brcmf_event_msg
*evtmsg
,
52 brcmf_dbg(TRACE
, "enter: bsscfgidx=%d\n", ifp
->bsscfgidx
);
54 return brcmf_debug_create_memdump(ifp
->drvr
->bus_if
, data
,
58 void brcmf_debugfs_init(void)
60 root_folder
= debugfs_create_dir(KBUILD_MODNAME
, NULL
);
61 if (IS_ERR(root_folder
))
65 void brcmf_debugfs_exit(void)
70 debugfs_remove_recursive(root_folder
);
74 int brcmf_debug_attach(struct brcmf_pub
*drvr
)
76 struct device
*dev
= drvr
->bus_if
->dev
;
81 drvr
->dbgfs_dir
= debugfs_create_dir(dev_name(dev
), root_folder
);
82 if (IS_ERR(drvr
->dbgfs_dir
))
83 return PTR_ERR(drvr
->dbgfs_dir
);
86 return brcmf_fweh_register(drvr
, BRCMF_E_PSM_WATCHDOG
,
87 brcmf_debug_psm_watchdog_notify
);
90 void brcmf_debug_detach(struct brcmf_pub
*drvr
)
92 brcmf_fweh_unregister(drvr
, BRCMF_E_PSM_WATCHDOG
);
94 if (!IS_ERR_OR_NULL(drvr
->dbgfs_dir
))
95 debugfs_remove_recursive(drvr
->dbgfs_dir
);
98 struct dentry
*brcmf_debugfs_get_devdir(struct brcmf_pub
*drvr
)
100 return drvr
->dbgfs_dir
;
103 int brcmf_debugfs_add_entry(struct brcmf_pub
*drvr
, const char *fn
,
104 int (*read_fn
)(struct seq_file
*seq
, void *data
))
108 e
= debugfs_create_devm_seqfile(drvr
->bus_if
->dev
, fn
,
109 drvr
->dbgfs_dir
, read_fn
);
110 return PTR_ERR_OR_ZERO(e
);