2008-12-21 00:57:49 +00:00
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/*
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* Intel Wireless WiMAX Connection 2400m
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* Debugfs interfaces to manipulate driver and device information
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*
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*
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* Copyright (C) 2007 Intel Corporation <linux-wimax@intel.com>
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* Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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#include <linux/debugfs.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/spinlock.h>
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#include <linux/device.h>
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#include "i2400m.h"
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#define D_SUBMODULE debugfs
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#include "debug-levels.h"
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static
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int debugfs_netdev_queue_stopped_get(void *data, u64 *val)
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{
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struct i2400m *i2400m = data;
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*val = netif_queue_stopped(i2400m->wimax_dev.net_dev);
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return 0;
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}
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DEFINE_SIMPLE_ATTRIBUTE(fops_netdev_queue_stopped,
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debugfs_netdev_queue_stopped_get,
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NULL, "%llu\n");
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static
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struct dentry *debugfs_create_netdev_queue_stopped(
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const char *name, struct dentry *parent, struct i2400m *i2400m)
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{
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return debugfs_create_file(name, 0400, parent, i2400m,
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&fops_netdev_queue_stopped);
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}
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/*
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* inode->i_private has the @data argument to debugfs_create_file()
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*/
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static
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int i2400m_stats_open(struct inode *inode, struct file *filp)
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{
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filp->private_data = inode->i_private;
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return 0;
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}
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/*
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* We don't allow partial reads of this file, as then the reader would
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* get weirdly confused data as it is updated.
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*
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* So or you read it all or nothing; if you try to read with an offset
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* != 0, we consider you are done reading.
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*/
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static
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ssize_t i2400m_rx_stats_read(struct file *filp, char __user *buffer,
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size_t count, loff_t *ppos)
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{
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struct i2400m *i2400m = filp->private_data;
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char buf[128];
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unsigned long flags;
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if (*ppos != 0)
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return 0;
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if (count < sizeof(buf))
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return -ENOSPC;
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spin_lock_irqsave(&i2400m->rx_lock, flags);
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snprintf(buf, sizeof(buf), "%u %u %u %u %u %u %u\n",
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i2400m->rx_pl_num, i2400m->rx_pl_min,
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i2400m->rx_pl_max, i2400m->rx_num,
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i2400m->rx_size_acc,
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i2400m->rx_size_min, i2400m->rx_size_max);
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spin_unlock_irqrestore(&i2400m->rx_lock, flags);
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return simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf));
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}
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/* Any write clears the stats */
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static
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ssize_t i2400m_rx_stats_write(struct file *filp, const char __user *buffer,
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size_t count, loff_t *ppos)
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{
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struct i2400m *i2400m = filp->private_data;
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unsigned long flags;
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spin_lock_irqsave(&i2400m->rx_lock, flags);
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i2400m->rx_pl_num = 0;
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i2400m->rx_pl_max = 0;
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i2400m->rx_pl_min = UINT_MAX;
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i2400m->rx_num = 0;
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i2400m->rx_size_acc = 0;
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i2400m->rx_size_min = UINT_MAX;
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i2400m->rx_size_max = 0;
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spin_unlock_irqrestore(&i2400m->rx_lock, flags);
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return count;
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}
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static
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const struct file_operations i2400m_rx_stats_fops = {
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.owner = THIS_MODULE,
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.open = i2400m_stats_open,
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.read = i2400m_rx_stats_read,
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.write = i2400m_rx_stats_write,
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llseek: automatically add .llseek fop
All file_operations should get a .llseek operation so we can make
nonseekable_open the default for future file operations without a
.llseek pointer.
The three cases that we can automatically detect are no_llseek, seq_lseek
and default_llseek. For cases where we can we can automatically prove that
the file offset is always ignored, we use noop_llseek, which maintains
the current behavior of not returning an error from a seek.
New drivers should normally not use noop_llseek but instead use no_llseek
and call nonseekable_open at open time. Existing drivers can be converted
to do the same when the maintainer knows for certain that no user code
relies on calling seek on the device file.
The generated code is often incorrectly indented and right now contains
comments that clarify for each added line why a specific variant was
chosen. In the version that gets submitted upstream, the comments will
be gone and I will manually fix the indentation, because there does not
seem to be a way to do that using coccinelle.
Some amount of new code is currently sitting in linux-next that should get
the same modifications, which I will do at the end of the merge window.
Many thanks to Julia Lawall for helping me learn to write a semantic
patch that does all this.
===== begin semantic patch =====
// This adds an llseek= method to all file operations,
// as a preparation for making no_llseek the default.
//
// The rules are
// - use no_llseek explicitly if we do nonseekable_open
// - use seq_lseek for sequential files
// - use default_llseek if we know we access f_pos
// - use noop_llseek if we know we don't access f_pos,
// but we still want to allow users to call lseek
//
@ open1 exists @
identifier nested_open;
@@
nested_open(...)
{
<+...
nonseekable_open(...)
...+>
}
@ open exists@
identifier open_f;
identifier i, f;
identifier open1.nested_open;
@@
int open_f(struct inode *i, struct file *f)
{
<+...
(
nonseekable_open(...)
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nested_open(...)
)
...+>
}
@ read disable optional_qualifier exists @
identifier read_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
expression E;
identifier func;
@@
ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off)
{
<+...
(
*off = E
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*off += E
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func(..., off, ...)
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E = *off
)
...+>
}
@ read_no_fpos disable optional_qualifier exists @
identifier read_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
@@
ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off)
{
... when != off
}
@ write @
identifier write_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
expression E;
identifier func;
@@
ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off)
{
<+...
(
*off = E
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*off += E
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func(..., off, ...)
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E = *off
)
...+>
}
@ write_no_fpos @
identifier write_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
@@
ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off)
{
... when != off
}
@ fops0 @
identifier fops;
@@
struct file_operations fops = {
...
};
@ has_llseek depends on fops0 @
identifier fops0.fops;
identifier llseek_f;
@@
struct file_operations fops = {
...
.llseek = llseek_f,
...
};
@ has_read depends on fops0 @
identifier fops0.fops;
identifier read_f;
@@
struct file_operations fops = {
...
.read = read_f,
...
};
@ has_write depends on fops0 @
identifier fops0.fops;
identifier write_f;
@@
struct file_operations fops = {
...
.write = write_f,
...
};
@ has_open depends on fops0 @
identifier fops0.fops;
identifier open_f;
@@
struct file_operations fops = {
...
.open = open_f,
...
};
// use no_llseek if we call nonseekable_open
////////////////////////////////////////////
@ nonseekable1 depends on !has_llseek && has_open @
identifier fops0.fops;
identifier nso ~= "nonseekable_open";
@@
struct file_operations fops = {
... .open = nso, ...
+.llseek = no_llseek, /* nonseekable */
};
@ nonseekable2 depends on !has_llseek @
identifier fops0.fops;
identifier open.open_f;
@@
struct file_operations fops = {
... .open = open_f, ...
+.llseek = no_llseek, /* open uses nonseekable */
};
// use seq_lseek for sequential files
/////////////////////////////////////
@ seq depends on !has_llseek @
identifier fops0.fops;
identifier sr ~= "seq_read";
@@
struct file_operations fops = {
... .read = sr, ...
+.llseek = seq_lseek, /* we have seq_read */
};
// use default_llseek if there is a readdir
///////////////////////////////////////////
@ fops1 depends on !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier readdir_e;
@@
// any other fop is used that changes pos
struct file_operations fops = {
... .readdir = readdir_e, ...
+.llseek = default_llseek, /* readdir is present */
};
// use default_llseek if at least one of read/write touches f_pos
/////////////////////////////////////////////////////////////////
@ fops2 depends on !fops1 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier read.read_f;
@@
// read fops use offset
struct file_operations fops = {
... .read = read_f, ...
+.llseek = default_llseek, /* read accesses f_pos */
};
@ fops3 depends on !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier write.write_f;
@@
// write fops use offset
struct file_operations fops = {
... .write = write_f, ...
+ .llseek = default_llseek, /* write accesses f_pos */
};
// Use noop_llseek if neither read nor write accesses f_pos
///////////////////////////////////////////////////////////
@ fops4 depends on !fops1 && !fops2 && !fops3 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier read_no_fpos.read_f;
identifier write_no_fpos.write_f;
@@
// write fops use offset
struct file_operations fops = {
...
.write = write_f,
.read = read_f,
...
+.llseek = noop_llseek, /* read and write both use no f_pos */
};
@ depends on has_write && !has_read && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier write_no_fpos.write_f;
@@
struct file_operations fops = {
... .write = write_f, ...
+.llseek = noop_llseek, /* write uses no f_pos */
};
@ depends on has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier read_no_fpos.read_f;
@@
struct file_operations fops = {
... .read = read_f, ...
+.llseek = noop_llseek, /* read uses no f_pos */
};
@ depends on !has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
@@
struct file_operations fops = {
...
+.llseek = noop_llseek, /* no read or write fn */
};
===== End semantic patch =====
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Julia Lawall <julia@diku.dk>
Cc: Christoph Hellwig <hch@infradead.org>
2010-08-15 16:52:59 +00:00
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.llseek = default_llseek,
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2008-12-21 00:57:49 +00:00
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};
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/* See i2400m_rx_stats_read() */
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static
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ssize_t i2400m_tx_stats_read(struct file *filp, char __user *buffer,
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size_t count, loff_t *ppos)
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{
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struct i2400m *i2400m = filp->private_data;
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char buf[128];
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unsigned long flags;
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if (*ppos != 0)
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return 0;
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if (count < sizeof(buf))
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return -ENOSPC;
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spin_lock_irqsave(&i2400m->tx_lock, flags);
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snprintf(buf, sizeof(buf), "%u %u %u %u %u %u %u\n",
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i2400m->tx_pl_num, i2400m->tx_pl_min,
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i2400m->tx_pl_max, i2400m->tx_num,
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i2400m->tx_size_acc,
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i2400m->tx_size_min, i2400m->tx_size_max);
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spin_unlock_irqrestore(&i2400m->tx_lock, flags);
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return simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf));
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}
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/* Any write clears the stats */
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static
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ssize_t i2400m_tx_stats_write(struct file *filp, const char __user *buffer,
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size_t count, loff_t *ppos)
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{
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struct i2400m *i2400m = filp->private_data;
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unsigned long flags;
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spin_lock_irqsave(&i2400m->tx_lock, flags);
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i2400m->tx_pl_num = 0;
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i2400m->tx_pl_max = 0;
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i2400m->tx_pl_min = UINT_MAX;
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i2400m->tx_num = 0;
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i2400m->tx_size_acc = 0;
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i2400m->tx_size_min = UINT_MAX;
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i2400m->tx_size_max = 0;
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spin_unlock_irqrestore(&i2400m->tx_lock, flags);
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return count;
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}
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static
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const struct file_operations i2400m_tx_stats_fops = {
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.owner = THIS_MODULE,
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.open = i2400m_stats_open,
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.read = i2400m_tx_stats_read,
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.write = i2400m_tx_stats_write,
|
llseek: automatically add .llseek fop
All file_operations should get a .llseek operation so we can make
nonseekable_open the default for future file operations without a
.llseek pointer.
The three cases that we can automatically detect are no_llseek, seq_lseek
and default_llseek. For cases where we can we can automatically prove that
the file offset is always ignored, we use noop_llseek, which maintains
the current behavior of not returning an error from a seek.
New drivers should normally not use noop_llseek but instead use no_llseek
and call nonseekable_open at open time. Existing drivers can be converted
to do the same when the maintainer knows for certain that no user code
relies on calling seek on the device file.
The generated code is often incorrectly indented and right now contains
comments that clarify for each added line why a specific variant was
chosen. In the version that gets submitted upstream, the comments will
be gone and I will manually fix the indentation, because there does not
seem to be a way to do that using coccinelle.
Some amount of new code is currently sitting in linux-next that should get
the same modifications, which I will do at the end of the merge window.
Many thanks to Julia Lawall for helping me learn to write a semantic
patch that does all this.
===== begin semantic patch =====
// This adds an llseek= method to all file operations,
// as a preparation for making no_llseek the default.
//
// The rules are
// - use no_llseek explicitly if we do nonseekable_open
// - use seq_lseek for sequential files
// - use default_llseek if we know we access f_pos
// - use noop_llseek if we know we don't access f_pos,
// but we still want to allow users to call lseek
//
@ open1 exists @
identifier nested_open;
@@
nested_open(...)
{
<+...
nonseekable_open(...)
...+>
}
@ open exists@
identifier open_f;
identifier i, f;
identifier open1.nested_open;
@@
int open_f(struct inode *i, struct file *f)
{
<+...
(
nonseekable_open(...)
|
nested_open(...)
)
...+>
}
@ read disable optional_qualifier exists @
identifier read_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
expression E;
identifier func;
@@
ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off)
{
<+...
(
*off = E
|
*off += E
|
func(..., off, ...)
|
E = *off
)
...+>
}
@ read_no_fpos disable optional_qualifier exists @
identifier read_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
@@
ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off)
{
... when != off
}
@ write @
identifier write_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
expression E;
identifier func;
@@
ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off)
{
<+...
(
*off = E
|
*off += E
|
func(..., off, ...)
|
E = *off
)
...+>
}
@ write_no_fpos @
identifier write_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
@@
ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off)
{
... when != off
}
@ fops0 @
identifier fops;
@@
struct file_operations fops = {
...
};
@ has_llseek depends on fops0 @
identifier fops0.fops;
identifier llseek_f;
@@
struct file_operations fops = {
...
.llseek = llseek_f,
...
};
@ has_read depends on fops0 @
identifier fops0.fops;
identifier read_f;
@@
struct file_operations fops = {
...
.read = read_f,
...
};
@ has_write depends on fops0 @
identifier fops0.fops;
identifier write_f;
@@
struct file_operations fops = {
...
.write = write_f,
...
};
@ has_open depends on fops0 @
identifier fops0.fops;
identifier open_f;
@@
struct file_operations fops = {
...
.open = open_f,
...
};
// use no_llseek if we call nonseekable_open
////////////////////////////////////////////
@ nonseekable1 depends on !has_llseek && has_open @
identifier fops0.fops;
identifier nso ~= "nonseekable_open";
@@
struct file_operations fops = {
... .open = nso, ...
+.llseek = no_llseek, /* nonseekable */
};
@ nonseekable2 depends on !has_llseek @
identifier fops0.fops;
identifier open.open_f;
@@
struct file_operations fops = {
... .open = open_f, ...
+.llseek = no_llseek, /* open uses nonseekable */
};
// use seq_lseek for sequential files
/////////////////////////////////////
@ seq depends on !has_llseek @
identifier fops0.fops;
identifier sr ~= "seq_read";
@@
struct file_operations fops = {
... .read = sr, ...
+.llseek = seq_lseek, /* we have seq_read */
};
// use default_llseek if there is a readdir
///////////////////////////////////////////
@ fops1 depends on !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier readdir_e;
@@
// any other fop is used that changes pos
struct file_operations fops = {
... .readdir = readdir_e, ...
+.llseek = default_llseek, /* readdir is present */
};
// use default_llseek if at least one of read/write touches f_pos
/////////////////////////////////////////////////////////////////
@ fops2 depends on !fops1 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier read.read_f;
@@
// read fops use offset
struct file_operations fops = {
... .read = read_f, ...
+.llseek = default_llseek, /* read accesses f_pos */
};
@ fops3 depends on !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier write.write_f;
@@
// write fops use offset
struct file_operations fops = {
... .write = write_f, ...
+ .llseek = default_llseek, /* write accesses f_pos */
};
// Use noop_llseek if neither read nor write accesses f_pos
///////////////////////////////////////////////////////////
@ fops4 depends on !fops1 && !fops2 && !fops3 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier read_no_fpos.read_f;
identifier write_no_fpos.write_f;
@@
// write fops use offset
struct file_operations fops = {
...
.write = write_f,
.read = read_f,
...
+.llseek = noop_llseek, /* read and write both use no f_pos */
};
@ depends on has_write && !has_read && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier write_no_fpos.write_f;
@@
struct file_operations fops = {
... .write = write_f, ...
+.llseek = noop_llseek, /* write uses no f_pos */
};
@ depends on has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier read_no_fpos.read_f;
@@
struct file_operations fops = {
... .read = read_f, ...
+.llseek = noop_llseek, /* read uses no f_pos */
};
@ depends on !has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
@@
struct file_operations fops = {
...
+.llseek = noop_llseek, /* no read or write fn */
};
===== End semantic patch =====
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Julia Lawall <julia@diku.dk>
Cc: Christoph Hellwig <hch@infradead.org>
2010-08-15 16:52:59 +00:00
|
|
|
.llseek = default_llseek,
|
2008-12-21 00:57:49 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/* Write 1 to ask the device to go into suspend */
|
|
|
|
static
|
|
|
|
int debugfs_i2400m_suspend_set(void *data, u64 val)
|
|
|
|
{
|
|
|
|
int result;
|
|
|
|
struct i2400m *i2400m = data;
|
|
|
|
result = i2400m_cmd_enter_powersave(i2400m);
|
|
|
|
if (result >= 0)
|
|
|
|
result = 0;
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
DEFINE_SIMPLE_ATTRIBUTE(fops_i2400m_suspend,
|
|
|
|
NULL, debugfs_i2400m_suspend_set,
|
|
|
|
"%llu\n");
|
|
|
|
|
|
|
|
static
|
|
|
|
struct dentry *debugfs_create_i2400m_suspend(
|
|
|
|
const char *name, struct dentry *parent, struct i2400m *i2400m)
|
|
|
|
{
|
|
|
|
return debugfs_create_file(name, 0200, parent, i2400m,
|
|
|
|
&fops_i2400m_suspend);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Reset the device
|
|
|
|
*
|
|
|
|
* Write 0 to ask the device to soft reset, 1 to cold reset, 2 to bus
|
|
|
|
* reset (as defined by enum i2400m_reset_type).
|
|
|
|
*/
|
|
|
|
static
|
|
|
|
int debugfs_i2400m_reset_set(void *data, u64 val)
|
|
|
|
{
|
|
|
|
int result;
|
|
|
|
struct i2400m *i2400m = data;
|
|
|
|
enum i2400m_reset_type rt = val;
|
|
|
|
switch(rt) {
|
|
|
|
case I2400M_RT_WARM:
|
|
|
|
case I2400M_RT_COLD:
|
|
|
|
case I2400M_RT_BUS:
|
2009-10-19 07:24:56 +00:00
|
|
|
result = i2400m_reset(i2400m, rt);
|
2008-12-21 00:57:49 +00:00
|
|
|
if (result >= 0)
|
|
|
|
result = 0;
|
|
|
|
default:
|
|
|
|
result = -EINVAL;
|
|
|
|
}
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
DEFINE_SIMPLE_ATTRIBUTE(fops_i2400m_reset,
|
|
|
|
NULL, debugfs_i2400m_reset_set,
|
|
|
|
"%llu\n");
|
|
|
|
|
|
|
|
static
|
|
|
|
struct dentry *debugfs_create_i2400m_reset(
|
|
|
|
const char *name, struct dentry *parent, struct i2400m *i2400m)
|
|
|
|
{
|
|
|
|
return debugfs_create_file(name, 0200, parent, i2400m,
|
|
|
|
&fops_i2400m_reset);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
#define __debugfs_register(prefix, name, parent) \
|
|
|
|
do { \
|
|
|
|
result = d_level_register_debugfs(prefix, name, parent); \
|
|
|
|
if (result < 0) \
|
|
|
|
goto error; \
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
|
|
|
|
int i2400m_debugfs_add(struct i2400m *i2400m)
|
|
|
|
{
|
|
|
|
int result;
|
|
|
|
struct device *dev = i2400m_dev(i2400m);
|
|
|
|
struct dentry *dentry = i2400m->wimax_dev.debugfs_dentry;
|
|
|
|
struct dentry *fd;
|
|
|
|
|
|
|
|
dentry = debugfs_create_dir("i2400m", dentry);
|
|
|
|
result = PTR_ERR(dentry);
|
|
|
|
if (IS_ERR(dentry)) {
|
|
|
|
if (result == -ENODEV)
|
|
|
|
result = 0; /* No debugfs support */
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
i2400m->debugfs_dentry = dentry;
|
|
|
|
__debugfs_register("dl_", control, dentry);
|
|
|
|
__debugfs_register("dl_", driver, dentry);
|
|
|
|
__debugfs_register("dl_", debugfs, dentry);
|
|
|
|
__debugfs_register("dl_", fw, dentry);
|
|
|
|
__debugfs_register("dl_", netdev, dentry);
|
|
|
|
__debugfs_register("dl_", rfkill, dentry);
|
|
|
|
__debugfs_register("dl_", rx, dentry);
|
|
|
|
__debugfs_register("dl_", tx, dentry);
|
|
|
|
|
|
|
|
fd = debugfs_create_size_t("tx_in", 0400, dentry,
|
|
|
|
&i2400m->tx_in);
|
|
|
|
result = PTR_ERR(fd);
|
|
|
|
if (IS_ERR(fd) && result != -ENODEV) {
|
|
|
|
dev_err(dev, "Can't create debugfs entry "
|
|
|
|
"tx_in: %d\n", result);
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
|
|
|
fd = debugfs_create_size_t("tx_out", 0400, dentry,
|
|
|
|
&i2400m->tx_out);
|
|
|
|
result = PTR_ERR(fd);
|
|
|
|
if (IS_ERR(fd) && result != -ENODEV) {
|
|
|
|
dev_err(dev, "Can't create debugfs entry "
|
|
|
|
"tx_out: %d\n", result);
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
|
|
|
fd = debugfs_create_u32("state", 0600, dentry,
|
|
|
|
&i2400m->state);
|
|
|
|
result = PTR_ERR(fd);
|
|
|
|
if (IS_ERR(fd) && result != -ENODEV) {
|
|
|
|
dev_err(dev, "Can't create debugfs entry "
|
|
|
|
"state: %d\n", result);
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Trace received messages from user space
|
|
|
|
*
|
|
|
|
* In order to tap the bidirectional message stream in the
|
|
|
|
* 'msg' pipe, user space can read from the 'msg' pipe;
|
|
|
|
* however, due to limitations in libnl, we can't know what
|
|
|
|
* the different applications are sending down to the kernel.
|
|
|
|
*
|
|
|
|
* So we have this hack where the driver will echo any message
|
|
|
|
* received on the msg pipe from user space [through a call to
|
|
|
|
* wimax_dev->op_msg_from_user() into
|
|
|
|
* i2400m_op_msg_from_user()] into the 'trace' pipe that this
|
|
|
|
* driver creates.
|
|
|
|
*
|
|
|
|
* So then, reading from both the 'trace' and 'msg' pipes in
|
|
|
|
* user space will provide a full dump of the traffic.
|
|
|
|
*
|
|
|
|
* Write 1 to activate, 0 to clear.
|
|
|
|
*
|
|
|
|
* It is not really very atomic, but it is also not too
|
|
|
|
* critical.
|
|
|
|
*/
|
|
|
|
fd = debugfs_create_u8("trace_msg_from_user", 0600, dentry,
|
|
|
|
&i2400m->trace_msg_from_user);
|
|
|
|
result = PTR_ERR(fd);
|
|
|
|
if (IS_ERR(fd) && result != -ENODEV) {
|
|
|
|
dev_err(dev, "Can't create debugfs entry "
|
|
|
|
"trace_msg_from_user: %d\n", result);
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
|
|
|
fd = debugfs_create_netdev_queue_stopped("netdev_queue_stopped",
|
|
|
|
dentry, i2400m);
|
|
|
|
result = PTR_ERR(fd);
|
|
|
|
if (IS_ERR(fd) && result != -ENODEV) {
|
|
|
|
dev_err(dev, "Can't create debugfs entry "
|
|
|
|
"netdev_queue_stopped: %d\n", result);
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
|
|
|
fd = debugfs_create_file("rx_stats", 0600, dentry, i2400m,
|
|
|
|
&i2400m_rx_stats_fops);
|
|
|
|
result = PTR_ERR(fd);
|
|
|
|
if (IS_ERR(fd) && result != -ENODEV) {
|
|
|
|
dev_err(dev, "Can't create debugfs entry "
|
|
|
|
"rx_stats: %d\n", result);
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
|
|
|
fd = debugfs_create_file("tx_stats", 0600, dentry, i2400m,
|
|
|
|
&i2400m_tx_stats_fops);
|
|
|
|
result = PTR_ERR(fd);
|
|
|
|
if (IS_ERR(fd) && result != -ENODEV) {
|
|
|
|
dev_err(dev, "Can't create debugfs entry "
|
|
|
|
"tx_stats: %d\n", result);
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
|
|
|
fd = debugfs_create_i2400m_suspend("suspend", dentry, i2400m);
|
|
|
|
result = PTR_ERR(fd);
|
|
|
|
if (IS_ERR(fd) && result != -ENODEV) {
|
|
|
|
dev_err(dev, "Can't create debugfs entry suspend: %d\n",
|
|
|
|
result);
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
|
|
|
fd = debugfs_create_i2400m_reset("reset", dentry, i2400m);
|
|
|
|
result = PTR_ERR(fd);
|
|
|
|
if (IS_ERR(fd) && result != -ENODEV) {
|
|
|
|
dev_err(dev, "Can't create debugfs entry reset: %d\n", result);
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
|
|
|
result = 0;
|
|
|
|
error:
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
void i2400m_debugfs_rm(struct i2400m *i2400m)
|
|
|
|
{
|
|
|
|
debugfs_remove_recursive(i2400m->debugfs_dentry);
|
|
|
|
}
|