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From:   Fabio Estevam <festevam@denx.de>
To:     kvalo@codeaurora.org
Cc:     ath10k@lists.infradead.org, linux-wireless@vger.kernel.org,
        hch@lst.de, erik.stromdahl@gmail.com, peter.oh@eero.com,
        aspriel@gmail.com, marex@denx.de, alagusankar@silex-india.com,
        Fabio Estevam <festevam@denx.de>
Subject: [PATCH v3] ath10k: high latency fixes for beacon buffer
Date:   Wed, 18 Aug 2021 20:26:27 -0300
Message-Id: <20210818232627.2040121-1-festevam@denx.de>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
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From: Alagu Sankar <alagusankar@silex-india.com>

Beacon buffer for high latency devices does not use DMA. other similar
buffer allocation methods in the driver have already been modified for
high latency path. Fix the beacon buffer allocation left out in the
earlier high latency changes.

Signed-off-by: Alagu Sankar <alagusankar@silex-india.com>
Signed-off-by: Erik Stromdahl <erik.stromdahl@gmail.com>
[fabio: adapt it to use ar->bus_param.dev_type ]
Signed-off-by: Fabio Estevam <festevam@denx.de>
---
Changes since v2:
- Pick Alagu's patch:
https://patchwork.kernel.org/project/ath10k/patch/20190417191503.18814-3-erik.stromdahl@gmail.com/

 drivers/net/wireless/ath/ath10k/mac.c | 31 ++++++++++++++++++++-------
 1 file changed, 23 insertions(+), 8 deletions(-)

diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index c272b290fa73..7ca68c81d9b6 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -993,8 +993,12 @@ static void ath10k_mac_vif_beacon_cleanup(struct ath10k_vif *arvif)
 	ath10k_mac_vif_beacon_free(arvif);
 
 	if (arvif->beacon_buf) {
-		dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN,
-				  arvif->beacon_buf, arvif->beacon_paddr);
+		if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL)
+			kfree(arvif->beacon_buf);
+		else
+			dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN,
+					  arvif->beacon_buf,
+					  arvif->beacon_paddr);
 		arvif->beacon_buf = NULL;
 	}
 }
@@ -5576,10 +5580,17 @@ static int ath10k_add_interface(struct ieee80211_hw *hw,
 	if (vif->type == NL80211_IFTYPE_ADHOC ||
 	    vif->type == NL80211_IFTYPE_MESH_POINT ||
 	    vif->type == NL80211_IFTYPE_AP) {
-		arvif->beacon_buf = dma_alloc_coherent(ar->dev,
-						       IEEE80211_MAX_FRAME_LEN,
-						       &arvif->beacon_paddr,
-						       GFP_ATOMIC);
+		if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) {
+			arvif->beacon_buf = kmalloc(IEEE80211_MAX_FRAME_LEN,
+						    GFP_KERNEL);
+			arvif->beacon_paddr = (dma_addr_t)arvif->beacon_buf;
+		} else {
+			arvif->beacon_buf =
+				dma_alloc_coherent(ar->dev,
+						   IEEE80211_MAX_FRAME_LEN,
+						   &arvif->beacon_paddr,
+						   GFP_ATOMIC);
+		}
 		if (!arvif->beacon_buf) {
 			ret = -ENOMEM;
 			ath10k_warn(ar, "failed to allocate beacon buffer: %d\n",
@@ -5794,8 +5805,12 @@ static int ath10k_add_interface(struct ieee80211_hw *hw,
 
 err:
 	if (arvif->beacon_buf) {
-		dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN,
-				  arvif->beacon_buf, arvif->beacon_paddr);
+		if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL)
+			kfree(arvif->beacon_buf);
+		else
+			dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN,
+					  arvif->beacon_buf,
+					  arvif->beacon_paddr);
 		arvif->beacon_buf = NULL;
 	}
 
-- 
2.25.1