diff mbox series

[iwlwifi-next,06/15] wifi: iwlwifi: mld: add timer host wakeup debugfs

Message ID 20250611063124.9f2a39cae1e1.Ie0003f21286fea50b507d0debe06332b030cd4cb@changeid
State Superseded
Headers show
Series wifi: iwlwifi: updates - 2025-06-11 | expand

Commit Message

Miri Korenblit June 11, 2025, 3:34 a.m. UTC 
From: Johannes Berg <johannes.berg@intel.com>

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>
---
 drivers/net/wireless/intel/iwlwifi/fw/api/d3.h   | 6 ++++--
 drivers/net/wireless/intel/iwlwifi/mld/d3.c      | 7 +++++++
 drivers/net/wireless/intel/iwlwifi/mld/debugfs.c | 5 +++++
 drivers/net/wireless/intel/iwlwifi/mld/mld.h     | 2 ++
 4 files changed, 18 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/d3.h b/drivers/net/wireless/intel/iwlwifi/fw/api/d3.h
index 9c271ea67155..9ce819503aed 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/api/d3.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/api/d3.h
@@ -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 */
 
 /**
diff --git a/drivers/net/wireless/intel/iwlwifi/mld/d3.c b/drivers/net/wireless/intel/iwlwifi/mld/d3.c
index 339b148d6793..d450d24689f6 100644
--- a/drivers/net/wireless/intel/iwlwifi/mld/d3.c
+++ b/drivers/net/wireless/intel/iwlwifi/mld/d3.c
@@ -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");
diff --git a/drivers/net/wireless/intel/iwlwifi/mld/debugfs.c b/drivers/net/wireless/intel/iwlwifi/mld/debugfs.c
index 352da8aa7898..75cc1d8bb90c 100644
--- a/drivers/net/wireless/intel/iwlwifi/mld/debugfs.c
+++ b/drivers/net/wireless/intel/iwlwifi/mld/debugfs.c
@@ -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);
 
diff --git a/drivers/net/wireless/intel/iwlwifi/mld/mld.h b/drivers/net/wireless/intel/iwlwifi/mld/mld.h
index 1a2c44f44eff..241ab3a00e56 100644
--- a/drivers/net/wireless/intel/iwlwifi/mld/mld.h
+++ b/drivers/net/wireless/intel/iwlwifi/mld/mld.h
@@ -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;