118 lines
3.0 KiB
C
118 lines
3.0 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2012 Broadcom Corporation
|
||
|
|
*
|
||
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
||
|
|
* purpose with or without fee is hereby granted, provided that the above
|
||
|
|
* copyright notice and this permission notice appear in all copies.
|
||
|
|
*
|
||
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
||
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
||
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
||
|
|
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
|
||
|
|
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
|
||
|
|
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||
|
|
*/
|
||
|
|
#include <linux/debugfs.h>
|
||
|
|
#include <linux/netdevice.h>
|
||
|
|
#include <linux/module.h>
|
||
|
|
|
||
|
|
#include <brcmu_wifi.h>
|
||
|
|
#include <brcmu_utils.h>
|
||
|
|
#include "dhd.h"
|
||
|
|
#include "dhd_bus.h"
|
||
|
|
#include "dhd_dbg.h"
|
||
|
|
|
||
|
|
static struct dentry *root_folder;
|
||
|
|
|
||
|
|
void brcmf_debugfs_init(void)
|
||
|
|
{
|
||
|
|
root_folder = debugfs_create_dir(KBUILD_MODNAME, NULL);
|
||
|
|
if (IS_ERR(root_folder))
|
||
|
|
root_folder = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
void brcmf_debugfs_exit(void)
|
||
|
|
{
|
||
|
|
if (!root_folder)
|
||
|
|
return;
|
||
|
|
|
||
|
|
debugfs_remove_recursive(root_folder);
|
||
|
|
root_folder = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int brcmf_debugfs_chipinfo_read(struct seq_file *seq, void *data)
|
||
|
|
{
|
||
|
|
struct brcmf_bus *bus = dev_get_drvdata(seq->private);
|
||
|
|
|
||
|
|
seq_printf(seq, "chip: %x(%u) rev %u\n",
|
||
|
|
bus->chip, bus->chip, bus->chiprev);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int brcmf_debugfs_attach(struct brcmf_pub *drvr)
|
||
|
|
{
|
||
|
|
struct device *dev = drvr->bus_if->dev;
|
||
|
|
|
||
|
|
if (!root_folder)
|
||
|
|
return -ENODEV;
|
||
|
|
|
||
|
|
drvr->dbgfs_dir = debugfs_create_dir(dev_name(dev), root_folder);
|
||
|
|
brcmf_debugfs_add_entry(drvr, "chipinfo", brcmf_debugfs_chipinfo_read);
|
||
|
|
|
||
|
|
return PTR_ERR_OR_ZERO(drvr->dbgfs_dir);
|
||
|
|
}
|
||
|
|
|
||
|
|
void brcmf_debugfs_detach(struct brcmf_pub *drvr)
|
||
|
|
{
|
||
|
|
if (!IS_ERR_OR_NULL(drvr->dbgfs_dir))
|
||
|
|
debugfs_remove_recursive(drvr->dbgfs_dir);
|
||
|
|
}
|
||
|
|
|
||
|
|
struct dentry *brcmf_debugfs_get_devdir(struct brcmf_pub *drvr)
|
||
|
|
{
|
||
|
|
return drvr->dbgfs_dir;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct brcmf_debugfs_entry {
|
||
|
|
int (*read)(struct seq_file *seq, void *data);
|
||
|
|
struct brcmf_pub *drvr;
|
||
|
|
};
|
||
|
|
|
||
|
|
static int brcmf_debugfs_entry_open(struct inode *inode, struct file *f)
|
||
|
|
{
|
||
|
|
struct brcmf_debugfs_entry *entry = inode->i_private;
|
||
|
|
|
||
|
|
return single_open(f, entry->read, entry->drvr->bus_if->dev);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct file_operations brcmf_debugfs_def_ops = {
|
||
|
|
.owner = THIS_MODULE,
|
||
|
|
.open = brcmf_debugfs_entry_open,
|
||
|
|
.release = single_release,
|
||
|
|
.read = seq_read,
|
||
|
|
.llseek = seq_lseek
|
||
|
|
};
|
||
|
|
|
||
|
|
int brcmf_debugfs_add_entry(struct brcmf_pub *drvr, const char *fn,
|
||
|
|
int (*read_fn)(struct seq_file *seq, void *data))
|
||
|
|
{
|
||
|
|
struct dentry *dentry = drvr->dbgfs_dir;
|
||
|
|
struct brcmf_debugfs_entry *entry;
|
||
|
|
|
||
|
|
if (IS_ERR_OR_NULL(dentry))
|
||
|
|
return -ENOENT;
|
||
|
|
|
||
|
|
entry = devm_kzalloc(drvr->bus_if->dev, sizeof(*entry), GFP_KERNEL);
|
||
|
|
if (!entry)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
entry->read = read_fn;
|
||
|
|
entry->drvr = drvr;
|
||
|
|
|
||
|
|
dentry = debugfs_create_file(fn, S_IRUGO, dentry, entry,
|
||
|
|
&brcmf_debugfs_def_ops);
|
||
|
|
|
||
|
|
return PTR_ERR_OR_ZERO(dentry);
|
||
|
|
}
|