From 90bf5c8d0f7ecddf96fc1cd9434af4e157b51970 Mon Sep 17 00:00:00 2001
From: Carl Huang <quic_cjhuang@quicinc.com>
Date: Mon, 14 Mar 2022 07:18:16 +0200
Subject: [PATCH] ath11k: purge rx pktlog when entering WoW
Git-commit: 90bf5c8d0f7ecddf96fc1cd9434af4e157b51970
Patch-mainline: v5.19-rc1
References: bsc#1206451
This change is to purge rx pktlog when entering WoW and reap
the mon_status buffer to keep it empty. When leaving WoW, host
restarts the reap timer. In WoW state, it's not allowed to feed
into mon_status rings per firmware team's recommendation.
Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1
Signed-off-by: Carl Huang <quic_cjhuang@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/1644308006-22784-5-git-send-email-quic_cjhuang@quicinc.com
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/net/wireless/ath/ath11k/wow.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/drivers/net/wireless/ath/ath11k/wow.c b/drivers/net/wireless/ath/ath11k/wow.c
index 50dd50944edd..602b8f4c5985 100644
--- a/drivers/net/wireless/ath/ath11k/wow.c
+++ b/drivers/net/wireless/ath/ath11k/wow.c
@@ -13,6 +13,7 @@
#include "debug.h"
#include "wmi.h"
#include "wow.h"
+#include "dp_rx.h"
static const struct wiphy_wowlan_support ath11k_wowlan_support = {
.flags = WIPHY_WOWLAN_DISCONNECT |
@@ -566,6 +567,14 @@ int ath11k_wow_op_suspend(struct ieee80211_hw *hw,
mutex_lock(&ar->conf_mutex);
+ ret = ath11k_dp_rx_pktlog_stop(ar->ab, true);
+ if (ret) {
+ ath11k_warn(ar->ab,
+ "failed to stop dp rx (and timer) pktlog during wow suspend: %d\n",
+ ret);
+ goto exit;
+ }
+
ret = ath11k_wow_cleanup(ar);
if (ret) {
ath11k_warn(ar->ab, "failed to clear wow wakeup events: %d\n",
@@ -599,6 +608,14 @@ int ath11k_wow_op_suspend(struct ieee80211_hw *hw,
goto cleanup;
}
+ ret = ath11k_dp_rx_pktlog_stop(ar->ab, false);
+ if (ret) {
+ ath11k_warn(ar->ab,
+ "failed to stop dp rx pktlog during wow suspend: %d\n",
+ ret);
+ goto cleanup;
+ }
+
ath11k_ce_stop_shadow_timers(ar->ab);
ath11k_dp_stop_shadow_timers(ar->ab);
@@ -649,6 +666,12 @@ int ath11k_wow_op_resume(struct ieee80211_hw *hw)
ath11k_hif_ce_irq_enable(ar->ab);
ath11k_hif_irq_enable(ar->ab);
+ ret = ath11k_dp_rx_pktlog_start(ar->ab);
+ if (ret) {
+ ath11k_warn(ar->ab, "failed to start rx pktlog from wow: %d\n", ret);
+ return ret;
+ }
+
ret = ath11k_wow_wakeup(ar->ab);
if (ret) {
ath11k_warn(ar->ab, "failed to wakeup from wow: %d\n", ret);
--
2.35.3