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iwlwifi: debugfs EEPROM dump
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> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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6def9761f7
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2 changed files with 43 additions and 0 deletions
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@ -57,6 +57,7 @@ struct iwl_debugfs {
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struct dentry *dir_data;
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struct dentry *dir_data;
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struct dir_data_files{
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struct dir_data_files{
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struct dentry *file_sram;
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struct dentry *file_sram;
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struct dentry *file_eeprom;
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struct dentry *file_stations;
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struct dentry *file_stations;
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struct dentry *file_rx_statistics;
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struct dentry *file_rx_statistics;
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struct dentry *file_tx_statistics;
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struct dentry *file_tx_statistics;
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@ -277,8 +277,48 @@ static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
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return ret;
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return ret;
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}
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}
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static ssize_t iwl_dbgfs_eeprom_read(struct file *file,
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char __user *user_buf,
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size_t count,
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loff_t *ppos)
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{
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ssize_t ret;
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struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
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int pos = 0, ofs = 0, buf_size = 0;
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const u8 *ptr;
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char *buf;
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size_t eeprom_len = priv->cfg->eeprom_size;
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buf_size = 4 * eeprom_len + 256;
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if (eeprom_len % 16) {
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IWL_ERROR("EEPROM size is not multiple of 16.\n");
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return -ENODATA;
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}
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/* 4 characters for byte 0xYY */
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buf = kzalloc(buf_size, GFP_KERNEL);
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if (!buf) {
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IWL_ERROR("Can not allocate Buffer\n");
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return -ENOMEM;
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}
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ptr = priv->eeprom;
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for (ofs = 0 ; ofs < eeprom_len ; ofs += 16) {
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pos += scnprintf(buf + pos, buf_size - pos, "0x%.4x ", ofs);
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hex_dump_to_buffer(ptr + ofs, 16 , 16, 2, buf + pos,
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buf_size - pos, 0);
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pos += strlen(buf);
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if (buf_size - pos > 0)
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buf[pos++] = '\n';
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}
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ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
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kfree(buf);
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return ret;
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}
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DEBUGFS_READ_WRITE_FILE_OPS(sram);
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DEBUGFS_READ_WRITE_FILE_OPS(sram);
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DEBUGFS_READ_FILE_OPS(eeprom);
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DEBUGFS_READ_FILE_OPS(stations);
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DEBUGFS_READ_FILE_OPS(stations);
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DEBUGFS_READ_FILE_OPS(rx_statistics);
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DEBUGFS_READ_FILE_OPS(rx_statistics);
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DEBUGFS_READ_FILE_OPS(tx_statistics);
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DEBUGFS_READ_FILE_OPS(tx_statistics);
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@ -304,6 +344,7 @@ int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
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}
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}
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DEBUGFS_ADD_DIR(data, dbgfs->dir_drv);
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DEBUGFS_ADD_DIR(data, dbgfs->dir_drv);
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DEBUGFS_ADD_FILE(eeprom, data);
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DEBUGFS_ADD_FILE(sram, data);
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DEBUGFS_ADD_FILE(sram, data);
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DEBUGFS_ADD_FILE(stations, data);
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DEBUGFS_ADD_FILE(stations, data);
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DEBUGFS_ADD_FILE(rx_statistics, data);
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DEBUGFS_ADD_FILE(rx_statistics, data);
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@ -327,6 +368,7 @@ void iwl_dbgfs_unregister(struct iwl_priv *priv)
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if (!(priv->dbgfs))
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if (!(priv->dbgfs))
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return;
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return;
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DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_eeprom);
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DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_rx_statistics);
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DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_rx_statistics);
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DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_tx_statistics);
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DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_tx_statistics);
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DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_sram);
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DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_sram);
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