[PATCH 05/25] iwlwifi: debugfs EEPROM dump

Zhu Yi
2008-05-05T02:24:09Z

From: Tomas Winkler <tomas.winkler@intel.com>

This patch adds EEPROM dump in debugfs.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
---
drivers/net/wireless/iwlwifi/iwl-debug.h | 1 +
drivers/net/wireless/iwlwifi/iwl-debugfs.c | 42 ++++++++++++++++++++++++++++
2 files changed, 43 insertions(+), 0 deletions(-)

diff --git a/drivers/net/wireless/iwlwifi/iwl-debug.h b/drivers/net/wireless/iwlwifi/iwl-debug.h
index c60724c..7e68d24 100644
--- a/drivers/net/wireless/iwlwifi/iwl-debug.h
+++ b/drivers/net/wireless/iwlwifi/iwl-debug.h
@@ -57,6 +57,7 @@ struct iwl_debugfs {
struct dentry *dir_data;
struct dir_data_files{
struct dentry *file_sram;
+ struct dentry *file_eeprom;
struct dentry *file_stations;
struct dentry *file_rx_statistics;
struct dentry *file_tx_statistics;
diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
index e28c31d..b310f70 100644
--- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
@@ -271,8 +271,48 @@ static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
return ret;
}

+static ssize_t iwl_dbgfs_eeprom_read(struct file *file,
+ char __user *user_buf,
+ size_t count,
+ loff_t *ppos)
+{
+ ssize_t ret;
+ struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
+ int pos = 0, ofs = 0, buf_size = 0;
+ const u8 *ptr;
+ char *buf;
+ size_t eeprom_len = priv->cfg->eeprom_size;
+ buf_size = 4 * eeprom_len + 256;
+
+ if (eeprom_len % 16) {
+ IWL_ERROR("EEPROM size is not multiple of 16.\n");
+ return -ENODATA;
+ }
+
+ /* 4 characters for byte 0xYY */
+ buf = kzalloc(buf_size, GFP_KERNEL);
+ if (!buf) {
+ IWL_ERROR("Can not allocate Buffer\n");
+ return -ENOMEM;
+ }
+
+ ptr = priv->eeprom;
+ for (ofs = 0 ; ofs < eeprom_len ; ofs += 16) {
+ pos += scnprintf(buf + pos, buf_size - pos, "0x%.4x ", ofs);
+ hex_dump_to_buffer(ptr + ofs, 16 , 16, 2, buf + pos,
+ buf_size - pos, 0);
+ pos += strlen(buf);
+ if (buf_size - pos > 0)
+ buf[pos++] = '\n';
+ }
+
+ ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
+ kfree(buf);
+ return ret;
+}

DEBUGFS_READ_WRITE_FILE_OPS(sram);
+DEBUGFS_READ_FILE_OPS(eeprom);
DEBUGFS_READ_FILE_OPS(stations);
DEBUGFS_READ_FILE_OPS(rx_statistics);
DEBUGFS_READ_FILE_OPS(tx_statistics);
@@ -298,6 +338,7 @@ int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
}

DEBUGFS_ADD_DIR(data, dbgfs->dir_drv);
+ DEBUGFS_ADD_FILE(eeprom, data);
DEBUGFS_ADD_FILE(sram, data);
DEBUGFS_ADD_FILE(stations, data);
DEBUGFS_ADD_FILE(rx_statistics, data);
@@ -321,6 +362,7 @@ void iwl_dbgfs_unregister(struct iwl_priv *priv)
if (!(priv->dbgfs))
return;

+ DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_eeprom);
DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_rx_statistics);
DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_tx_statistics);
DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_sram);
--
1.5.3.6