iwlwifi: support NVM access (EEPROM/OTP)
Two type of NVM available for devices 1000, 6000 and after, adding
support to read OTP lower blocks if OTP is used instead of EEPROM.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
index ffc4be3..713f9ed 100644
--- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
@@ -292,7 +292,7 @@
return ret;
}
-static ssize_t iwl_dbgfs_eeprom_read(struct file *file,
+static ssize_t iwl_dbgfs_nvm_read(struct file *file,
char __user *user_buf,
size_t count,
loff_t *ppos)
@@ -306,7 +306,7 @@
buf_size = 4 * eeprom_len + 256;
if (eeprom_len % 16) {
- IWL_ERR(priv, "EEPROM size is not multiple of 16.\n");
+ IWL_ERR(priv, "NVM size is not multiple of 16.\n");
return -ENODATA;
}
@@ -318,6 +318,13 @@
}
ptr = priv->eeprom;
+ if (!ptr) {
+ IWL_ERR(priv, "Invalid EEPROM/OTP memory\n");
+ return -ENOMEM;
+ }
+ pos += scnprintf(buf + pos, buf_size - pos, "NVM Type: %s\n",
+ (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP)
+ ? "OTP" : "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,
@@ -419,7 +426,6 @@
channels[i].flags &
IEEE80211_CHAN_PASSIVE_SCAN ?
"passive only" : "active/passive");
-
ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
kfree(buf);
return ret;
@@ -564,7 +570,7 @@
DEBUGFS_READ_WRITE_FILE_OPS(sram);
DEBUGFS_WRITE_FILE_OPS(log_event);
-DEBUGFS_READ_FILE_OPS(eeprom);
+DEBUGFS_READ_FILE_OPS(nvm);
DEBUGFS_READ_FILE_OPS(stations);
DEBUGFS_READ_FILE_OPS(rx_statistics);
DEBUGFS_READ_FILE_OPS(tx_statistics);
@@ -598,7 +604,7 @@
DEBUGFS_ADD_DIR(data, dbgfs->dir_drv);
DEBUGFS_ADD_DIR(rf, dbgfs->dir_drv);
- DEBUGFS_ADD_FILE(eeprom, data);
+ DEBUGFS_ADD_FILE(nvm, data);
DEBUGFS_ADD_FILE(sram, data);
DEBUGFS_ADD_FILE(log_event, data);
DEBUGFS_ADD_FILE(stations, data);
@@ -629,7 +635,7 @@
if (!priv->dbgfs)
return;
- DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_eeprom);
+ DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_nvm);
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);