Commit 36dfe9ac authored by Mordechay Goodstein's avatar Mordechay Goodstein Committed by Luca Coelho
Browse files

iwlwifi: dump api version in yaml format 



Used for debugging what FW API we are using to understand misalignment
with API changes.

The output looks like this as a yaml format

fw_api_ver:
  0x0001:
    name: MVM_ALIVE
    cmd_ver: 99
    notif_ver: 4
  0x0108:
    name: PHY_CONTEXT_CMD
    cmd_ver: 2
    notif_ver: 0
...

Signed-off-by: default avatarMordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: default avatarLuca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200424194456.18bf540ab8e0.I6217488f1740f0e6accd0cecd09dfd46bad88426@changeid
parent 3f910a25

drivers/net/wireless/intel/iwlwifi/fw/debugfs.c

+100 −4
Original line number Diff line number Diff line
@@ -5,10 +5,9 @@ 
 *

 * GPL LICENSE SUMMARY

 *

 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.

 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH

 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH

 * Copyright (C) 2018 Intel Corporation

 * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of version 2 of the GNU General Public License as
@@ -28,10 +27,9 @@ 
 *

 * BSD LICENSE

 *

 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.

 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH

 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH

 * Copyright (C) 2018 Intel Corporation

 * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without
@@ -64,6 +62,7 @@ 
#include "api/commands.h"

#include "debugfs.h"

#include "dbg.h"

#include <linux/seq_file.h>



#define FWRT_DEBUGFS_OPEN_WRAPPER(name, buflen, argtype)		\

struct dbgfs_##name##_data {						\
@@ -329,11 +328,108 @@ static ssize_t iwl_dbgfs_fw_dbg_domain_read(struct iwl_fw_runtime *fwrt, 


FWRT_DEBUGFS_READ_FILE_OPS(fw_dbg_domain, 20);



struct iwl_dbgfs_fw_info_priv {

	struct iwl_fw_runtime *fwrt;

};



struct iwl_dbgfs_fw_info_state {

	loff_t pos;

};



static void *iwl_dbgfs_fw_info_seq_next(struct seq_file *seq,

					void *v, loff_t *pos)

{

	struct iwl_dbgfs_fw_info_state *state = v;

	struct iwl_dbgfs_fw_info_priv *priv = seq->private;

	const struct iwl_fw *fw = priv->fwrt->fw;



	*pos = ++state->pos;

	if (*pos >= fw->ucode_capa.n_cmd_versions)

		return NULL;



	return state;

}



static void iwl_dbgfs_fw_info_seq_stop(struct seq_file *seq,

				       void *v)

{

	kfree(v);

}



static void *iwl_dbgfs_fw_info_seq_start(struct seq_file *seq, loff_t *pos)

{

	struct iwl_dbgfs_fw_info_priv *priv = seq->private;

	const struct iwl_fw *fw = priv->fwrt->fw;

	struct iwl_dbgfs_fw_info_state *state;



	if (*pos >= fw->ucode_capa.n_cmd_versions)

		return NULL;



	state = kzalloc(sizeof(*state), GFP_KERNEL);

	if (!state)

		return NULL;

	state->pos = *pos;

	return state;

};



static int iwl_dbgfs_fw_info_seq_show(struct seq_file *seq, void *v)

{

	struct iwl_dbgfs_fw_info_state *state = v;

	struct iwl_dbgfs_fw_info_priv *priv = seq->private;

	const struct iwl_fw *fw = priv->fwrt->fw;

	const struct iwl_fw_cmd_version *ver;

	u32 cmd_id;



	if (!state->pos)

		seq_puts(seq, "fw_api_ver:\n");



	ver = &fw->ucode_capa.cmd_versions[state->pos];



	cmd_id = iwl_cmd_id(ver->cmd, ver->group, 0);



	seq_printf(seq, "  0x%04x:\n", cmd_id);

	seq_printf(seq, "    name: %s\n",

		   iwl_get_cmd_string(priv->fwrt->trans, cmd_id));

	seq_printf(seq, "    cmd_ver: %d\n", ver->cmd_ver);

	seq_printf(seq, "    notif_ver: %d\n", ver->notif_ver);

	return 0;

}



static const struct seq_operations iwl_dbgfs_info_seq_ops = {

	.start = iwl_dbgfs_fw_info_seq_start,

	.next = iwl_dbgfs_fw_info_seq_next,

	.stop = iwl_dbgfs_fw_info_seq_stop,

	.show = iwl_dbgfs_fw_info_seq_show,

};



static int iwl_dbgfs_fw_info_open(struct inode *inode, struct file *filp)

{

	struct iwl_dbgfs_fw_info_priv *priv;



	priv = __seq_open_private(filp, &iwl_dbgfs_info_seq_ops,

				  sizeof(*priv));



	if (!priv)

		return -ENOMEM;



	priv->fwrt = inode->i_private;

	return 0;

}



static const struct file_operations iwl_dbgfs_fw_info_ops = {

	.owner = THIS_MODULE,

	.open = iwl_dbgfs_fw_info_open,

	.read = seq_read,

	.llseek = seq_lseek,

	.release = seq_release_private,

};



void iwl_fwrt_dbgfs_register(struct iwl_fw_runtime *fwrt,

			    struct dentry *dbgfs_dir)

{

	INIT_DELAYED_WORK(&fwrt->timestamp.wk, iwl_fw_timestamp_marker_wk);

	FWRT_DEBUGFS_ADD_FILE(timestamp_marker, dbgfs_dir, 0200);

	FWRT_DEBUGFS_ADD_FILE(fw_info, dbgfs_dir, 0200);

	FWRT_DEBUGFS_ADD_FILE(send_hcmd, dbgfs_dir, 0200);

	FWRT_DEBUGFS_ADD_FILE(fw_dbg_domain, dbgfs_dir, 0400);

}