Commit 8dd266ef authored by Tomas Winkler's avatar Tomas Winkler Committed by John W. Linville
Browse files

iwlwifi: debugfs EEPROM dump



This patch adds EEPROM dump in debugfs.

Signed-off-by: default avatarTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: default avatarAbhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 6def9761
......@@ -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;
......
......@@ -277,8 +277,48 @@ 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);
......@@ -304,6 +344,7 @@ 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);
......@@ -327,6 +368,7 @@ 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);
......
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