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

[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-debugfs.c

diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
index a7ca06d21d598de8fd3d182cdffbcd076657f60a..a3d461ff4a9c39427ae1a621303e04916305f048 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
@@ -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);