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wifi: iwlwifi: mld: add timer host wakeup debugfs

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Add a debugfs file to be able to control how long, at most,
the device will sleep before waking up the host. This will
be useful to test certain "assert during suspend" scenarios
for the previous change.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250611222325.9f2a39cae1e1.Ie0003f21286fea50b507d0debe06332b030cd4cb@changeid
This commit is contained in:
Johannes Berg 2025-06-11 22:26:25 +03:00 committed by Miri Korenblit
parent 7a7cb2eb54
commit bc0440eeaf
4 changed files with 18 additions and 2 deletions
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6
drivers/net/wireless/intel/iwlwifi/fw/api/d3.h
View File

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
/*
* Copyright (C) 2012-2014, 2018-2024 Intel Corporation
* Copyright (C) 2012-2014, 2018-2025 Intel Corporation
* Copyright (C) 2013-2014 Intel Mobile Communications GmbH
* Copyright (C) 2015-2017 Intel Deutschland GmbH
*/
@ -19,9 +19,11 @@ enum iwl_d0i3_flags {
/**
* enum iwl_d3_wakeup_flags - D3 manager wakeup flags
* @IWL_WAKEUP_D3_CONFIG_FW_ERROR: wake up on firmware sysassert
* @IWL_WAKEUP_D3_HOST_TIMER: wake up on host timer expiry
*/
enum iwl_d3_wakeup_flags {
IWL_WAKEUP_D3_CONFIG_FW_ERROR = BIT(0),
IWL_WAKEUP_D3_CONFIG_FW_ERROR = BIT(0),
IWL_WAKEUP_D3_HOST_TIMER = BIT(1),
}; /* D3_MANAGER_WAKEUP_CONFIG_API_E_VER_3 */
/**

7
drivers/net/wireless/intel/iwlwifi/mld/d3.c
View File

@ -1317,6 +1317,13 @@ int iwl_mld_no_wowlan_suspend(struct iwl_mld *mld)
struct iwl_d3_manager_config d3_cfg_cmd_data = {};
int ret;
if (mld->debug_max_sleep) {
d3_cfg_cmd_data.wakeup_host_timer =
cpu_to_le32(mld->debug_max_sleep);
d3_cfg_cmd_data.wakeup_flags =
cpu_to_le32(IWL_WAKEUP_D3_HOST_TIMER);
}
lockdep_assert_wiphy(mld->wiphy);
IWL_DEBUG_WOWLAN(mld, "Starting the no wowlan suspend flow\n");

5
drivers/net/wireless/intel/iwlwifi/mld/debugfs.c
View File

@ -546,6 +546,11 @@ iwl_mld_add_debugfs_files(struct iwl_mld *mld, struct dentry *debugfs_dir)
#endif
MLD_DEBUGFS_ADD_FILE(inject_packet, debugfs_dir, 0200);
#ifdef CONFIG_PM_SLEEP
debugfs_create_u32("max_sleep", 0600, debugfs_dir,
&mld->debug_max_sleep);
#endif
debugfs_create_bool("rx_ts_ptp", 0600, debugfs_dir,
&mld->monitor.ptp_time);

2
drivers/net/wireless/intel/iwlwifi/mld/mld.h
View File

@ -159,6 +159,7 @@
* @addresses: device MAC addresses.
* @scan: instance of the scan object
* @wowlan: WoWLAN support data.
* @debug_max_sleep: maximum sleep time in D3 (for debug purposes)
* @led: the led device
* @mcc_src: the source id of the MCC, comes from the firmware
* @bios_enable_puncturing: is puncturing enabled by bios
@ -252,6 +253,7 @@ struct iwl_mld {
struct iwl_mld_scan scan;
#ifdef CONFIG_PM_SLEEP
struct wiphy_wowlan_support wowlan;
u32 debug_max_sleep;
#endif /* CONFIG_PM_SLEEP */
#ifdef CONFIG_IWLWIFI_LEDS
struct led_classdev led;