Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

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

drivers/net/wireless/iwlwifi/iwl-debug.h

+1 −0
Original line number Diff line number Diff line
@@ -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;

drivers/net/wireless/iwlwifi/iwl-debugfs.c

+42 −0
Original line number Diff line number Diff line
@@ -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);