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

Commit d7ea6283 authored by Xiaoyu Ye's avatar Xiaoyu Ye
Browse files

dsp: add support to crash device when send APR CMD to ADSP timed out 



Add support to use debugfs to crash device when q6lsm_apr_send_pkt
timed out due to no response from ADSP. By crashing the device,
crash dump can be collected to aid debugging on ADSP.

Change-Id: I2c53f62a9f99ee6f27fe68894dfbd3dc3aa52ed1
Signed-off-by: default avatarXiaoyu Ye <benyxy@codeaurora.org>
parent 74c97bf0

dsp/q6lsm.c

+30 −1
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2013-2020, Linux Foundation. All rights reserved.

 * Copyright (c) 2013-2021, Linux Foundation. All rights reserved.

 */

#include <linux/fs.h>

#include <linux/mutex.h>
@@ -63,6 +63,12 @@ struct lsm_common { 
	struct cal_type_data	*cal_data[LSM_MAX_CAL_IDX];



	struct mutex apr_lock;



#ifdef CONFIG_DEBUG_FS

	/* Debugfs related */

	struct dentry *entry;

	bool panic_on_timeout;

#endif

};



static struct lsm_common lsm_common;
@@ -508,6 +514,13 @@ static int q6lsm_apr_send_pkt(struct lsm_client *client, void *handle, 
				__func__, msg_hdr->opcode, msg_hdr->pkt_size);

			/* ret = 0 means wait timed out */

			ret = -ETIMEDOUT;

#ifdef CONFIG_DEBUG_FS

			/*

			 * If panic_on_timeout flag is explicitly set through the debugfs,

			 * then trigger a device crash here to aid debugging.

			 */

			BUG_ON(lsm_common.panic_on_timeout);

#endif

		}

	} else {

		ret = 0;
@@ -3071,10 +3084,26 @@ int __init q6lsm_init(void) 
	if (q6lsm_init_cal_data())

		pr_err("%s: could not init cal data!\n", __func__);



#ifdef CONFIG_DEBUG_FS

	lsm_common.entry = debugfs_create_dir("q6lsm_apr", NULL);

	if (!IS_ERR_OR_NULL(lsm_common.entry)) {

		if (IS_ERR(debugfs_create_bool("panic_on_timeout", 0644,

					       lsm_common.entry,

					       &lsm_common.panic_on_timeout)))

			lsm_common.panic_on_timeout = false;

		else

			pr_info("%s: panic_on_timeout debugfs flag is created\n", __func__);

	}

#endif

	return 0;

}



void q6lsm_exit(void)

{

	lsm_delete_cal_data();



#ifdef CONFIG_DEBUG_FS

	debugfs_remove_recursive(lsm_common.entry);

	lsm_common.entry = NULL;

#endif

}