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iwlwifi: display flowhandler register when sw error or on-demand

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Flowhandler handle the communication between driver and uCode, when any
uCode error happen, we also like to know what is the status of the
flowhandler; it can help to debug flowhandler related problem.

Also adding debugfs file to dump current value of flowhandler registers.

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>
This commit is contained in:
Wey-Yi Guy 2010-01-15 13:43:39 -08:00 • committed by John W. Linville
parent 2a11df6ee5
commit 1b3eb8236a
8 changed files with 114 additions and 0 deletions
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24
drivers/net/wireless/iwlwifi/iwl-debugfs.c
View file

@ -2151,6 +2151,27 @@ static ssize_t iwl_dbgfs_ucode_tracing_write(struct file *file,
return count;
}
static ssize_t iwl_dbgfs_fh_reg_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
char *buf;
int pos = 0;
ssize_t ret = -EFAULT;
if (priv->cfg->ops->lib->dump_fh) {
ret = pos = priv->cfg->ops->lib->dump_fh(priv, &buf, true);
if (buf) {
ret = simple_read_from_buffer(user_buf,
count, ppos, buf, pos);
kfree(buf);
}
}
return ret;
}
DEBUGFS_READ_FILE_OPS(rx_statistics);
DEBUGFS_READ_FILE_OPS(tx_statistics);
DEBUGFS_READ_WRITE_FILE_OPS(traffic_log);
@ -2167,6 +2188,7 @@ DEBUGFS_WRITE_FILE_OPS(clear_ucode_statistics);
DEBUGFS_WRITE_FILE_OPS(clear_traffic_statistics);
DEBUGFS_WRITE_FILE_OPS(csr);
DEBUGFS_READ_WRITE_FILE_OPS(ucode_tracing);
DEBUGFS_READ_FILE_OPS(fh_reg);
/*
* Create the debugfs files and directories
@ -2218,6 +2240,7 @@ int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
DEBUGFS_ADD_FILE(clear_ucode_statistics, debug, S_IWUSR);
DEBUGFS_ADD_FILE(clear_traffic_statistics, debug, S_IWUSR);
DEBUGFS_ADD_FILE(csr, debug, S_IWUSR);
DEBUGFS_ADD_FILE(fh_reg, debug, S_IRUSR);
if ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) != CSR_HW_REV_TYPE_3945) {
DEBUGFS_ADD_FILE(ucode_rx_stats, debug, S_IRUSR);
DEBUGFS_ADD_FILE(ucode_tx_stats, debug, S_IRUSR);
@ -2277,6 +2300,7 @@ void iwl_dbgfs_unregister(struct iwl_priv *priv)
DEBUGFS_REMOVE(priv->dbgfs->dbgfs_debug_files.
file_clear_traffic_statistics);
DEBUGFS_REMOVE(priv->dbgfs->dbgfs_debug_files.file_csr);
DEBUGFS_REMOVE(priv->dbgfs->dbgfs_debug_files.file_fh_reg);
if ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) != CSR_HW_REV_TYPE_3945) {
DEBUGFS_REMOVE(priv->dbgfs->dbgfs_debug_files.
file_ucode_rx_stats);