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mwifiex: add debugfs file to read chip information

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This patch add 'verext' debugfs item, which can be used to
get detailed chip specific information from our firmware.

Examples:
echo "1" > /sys/kernel/debug/mwifiex/mlan0/verext
cat /sys/kernel/debug/mwifiex/mlan0/verext

Signed-off-by: Shengzhen Li <szli@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Xinming Hu
2016-01-06 23:40:49 -08:00
committed by Kalle Valo
parent dc386ce76d
commit 17934b6a32
4 changed files with 63 additions and 4 deletions
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51
drivers/net/wireless/marvell/mwifiex/debugfs.c
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@@ -95,8 +95,7 @@ mwifiex_info_read(struct file *file, char __user *ubuf,
mwifiex_drv_get_driver_version(priv->adapter, fmt, sizeof(fmt) - 1);
if (!priv->version_str[0])
mwifiex_get_ver_ext(priv);
mwifiex_get_ver_ext(priv, 0);
p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
p += sprintf(p, "driver_version = %s", fmt);
@@ -583,6 +582,52 @@ done:
return ret;
}
/* debugfs verext file write handler.
* This function is called when the 'verext' file is opened for write
*/
static ssize_t
mwifiex_verext_write(struct file *file, const char __user *ubuf,
size_t count, loff_t *ppos)
{
int ret;
u32 versionstrsel;
struct mwifiex_private *priv = (void *)file->private_data;
char buf[16];
memset(buf, 0, sizeof(buf));
if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
return -EFAULT;
ret = kstrtou32(buf, 10, &versionstrsel);
if (ret)
return ret;
priv->versionstrsel = versionstrsel;
return count;
}
/* Proc verext file read handler.
* This function is called when the 'verext' file is opened for reading
* This function can be used read driver exteneed verion string.
*/
static ssize_t
mwifiex_verext_read(struct file *file, char __user *ubuf,
size_t count, loff_t *ppos)
{
struct mwifiex_private *priv =
(struct mwifiex_private *)file->private_data;
char buf[256];
int ret;
mwifiex_get_ver_ext(priv, priv->versionstrsel);
ret = snprintf(buf, sizeof(buf), "version string: %s\n",
priv->version_str);
return simple_read_from_buffer(ubuf, count, ppos, buf, ret);
}
/* Proc memrw file write handler.
* This function is called when the 'memrw' file is opened for writing
* This function can be used to write to a memory location.
@@ -940,6 +985,7 @@ MWIFIEX_DFS_FILE_OPS(histogram);
MWIFIEX_DFS_FILE_OPS(debug_mask);
MWIFIEX_DFS_FILE_OPS(timeshare_coex);
MWIFIEX_DFS_FILE_WRITE_OPS(reset);
MWIFIEX_DFS_FILE_OPS(verext);
/*
* This function creates the debug FS directory structure and the files.
@@ -968,6 +1014,7 @@ mwifiex_dev_debugfs_init(struct mwifiex_private *priv)
MWIFIEX_DFS_ADD_FILE(debug_mask);
MWIFIEX_DFS_ADD_FILE(timeshare_coex);
MWIFIEX_DFS_ADD_FILE(reset);
MWIFIEX_DFS_ADD_FILE(verext);
}
/*