diff mbox series

[v10] wifi: mt76: mt7915: add wds support when wed is enabled

Message ID TYCPR01MB84376878FE505F773182062B98D12@TYCPR01MB8437.jpnprd01.prod.outlook.com (mailing list archive)
State New
Delegated to: Felix Fietkau
Headers show
Series [v10] wifi: mt76: mt7915: add wds support when wed is enabled | expand

Checks

Context Check Description
wifibot/fixes_present success Fixes tag not required for -next series
wifibot/series_format warning Single patches do not need cover letters; Target tree name not specified in the subject
wifibot/tree_selection success Guessed tree name to be wireless-next
wifibot/ynl success Generated files up to date; no warnings/errors; no diff in generated;
wifibot/build_clang success Errors and warnings before: 0 this patch: 0
wifibot/build_32bit success Errors and warnings before: 0 this patch: 0
wifibot/build_allmodconfig_warn success Errors and warnings before: 2 this patch: 2
wifibot/build_clang_rust success No Rust files in patch. Skipping build
wifibot/build_tools success No tools touched, skip
wifibot/check_selftest success No net selftest shell script
wifibot/checkpatch warning WARNING: line length of 82 exceeds 80 columns WARNING: line length of 89 exceeds 80 columns WARNING: line length of 94 exceeds 80 columns
wifibot/deprecated_api success None detected
wifibot/header_inline success No static functions without inline keyword in header files
wifibot/kdoc success Errors and warnings before: 0 this patch: 0
wifibot/source_inline success Was 0 now: 0
wifibot/verify_fixes success No Fixes tag
wifibot/verify_signedoff success Signed-off-by tag matches author and committer

Commit Message

Shengyu Qu March 11, 2025, 5:29 a.m. UTC
The current WED only supports 256 wcid, whereas mt7986 can support up to
512 entries, so firmware provides a rule to get sta_info by DA when wcid
is set to 0x3ff by txd. Also, WED provides a register to overwrite txd
wcid, that is, wcid[9:8] can be overwritten by 0x3 and wcid[7:0] is set
to 0xff by host driver.

However, firmware is unable to get sta_info from DA as DA != RA for
4addr cases, so firmware and wifi host driver both use wcid (256 - 271)
and (768 ~ 783) for sync up to get correct sta_info.

Currently WDS+WED config is completely broken on MT7986/7981 devices if
without this patch.

Tested-by: Sujuan Chen <sujuan.chen@mediatek.com>
Co-developed-by: Bo Jiao <bo.jiao@mediatek.com>
Signed-off-by: Bo Jiao <bo.jiao@mediatek.com>
Signed-off-by: Sujuan Chen <sujuan.chen@mediatek.com>
Signed-off-by: Shengyu Qu <wiagn233@outlook.com>
---
Changes since v1:
 - Drop duplicate setting in mmio
 - Reduce the patch size by redefining mt76_wcid_alloc
Changes since v2:
 - Rework wds wcid getting flow
Changes since v3:
 - Rebase to next-20240703
 - Sync with downstream patch
Changes since v4:
 - Rebase to next-20240802
Changes since v5:
 - Fixed build test error reported by robot
 - Rebase to next-20240805
Changes since v6:
 - Fix potential race conditions on tx/rx packets during the transition
 - Rebase to Felix's newest codebase
Changes since v7:
 - Fix build fail
Changes since v8:
 - Changed code as Shih advised
Changes since v9:
 - Changed code as Shih advised
 - Moved mt76_wcid_alloc to mt76.h
---
 drivers/net/wireless/mediatek/mt76/mt76.h     | 15 ++++++
 .../net/wireless/mediatek/mt76/mt7915/main.c  | 53 +++++++++++++++++--
 .../net/wireless/mediatek/mt76/mt7915/mcu.c   | 18 +++++--
 .../net/wireless/mediatek/mt76/mt7915/mcu.h   |  1 +
 drivers/net/wireless/mediatek/mt76/util.c     | 37 +++++++++++--
 drivers/net/wireless/mediatek/mt76/util.h     |  2 +-
 6 files changed, 115 insertions(+), 11 deletions(-)

Comments

Ping-Ke Shih March 11, 2025, 8:30 a.m. UTC | #1
Shengyu Qu <wiagn233@outlook.com> wrote:
> 
> The current WED only supports 256 wcid, whereas mt7986 can support up to
> 512 entries, so firmware provides a rule to get sta_info by DA when wcid
> is set to 0x3ff by txd. Also, WED provides a register to overwrite txd
> wcid, that is, wcid[9:8] can be overwritten by 0x3 and wcid[7:0] is set
> to 0xff by host driver.
> 
> However, firmware is unable to get sta_info from DA as DA != RA for
> 4addr cases, so firmware and wifi host driver both use wcid (256 - 271)
> and (768 ~ 783) for sync up to get correct sta_info.
> 
> Currently WDS+WED config is completely broken on MT7986/7981 devices if
> without this patch.
> 
> Tested-by: Sujuan Chen <sujuan.chen@mediatek.com>
> Co-developed-by: Bo Jiao <bo.jiao@mediatek.com>
> Signed-off-by: Bo Jiao <bo.jiao@mediatek.com>
> Signed-off-by: Sujuan Chen <sujuan.chen@mediatek.com>
> Signed-off-by: Shengyu Qu <wiagn233@outlook.com>

Reviewed-by: Ping-Ke Shih <pkshih@realtek.com>
diff mbox series

Patch

diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h
index 132148f7b107..f9f11ce1f3fc 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76.h
@@ -28,6 +28,9 @@ 
 
 #define MT76_TOKEN_FREE_THR	64
 
+#define MT76_WED_WDS_MIN    256
+#define MT76_WED_WDS_MAX    272
+
 #define MT_QFLAG_WED_RING	GENMASK(1, 0)
 #define MT_QFLAG_WED_TYPE	GENMASK(4, 2)
 #define MT_QFLAG_WED		BIT(5)
@@ -73,6 +76,12 @@  enum mt76_wed_type {
 	MT76_WED_RRO_Q_IND,
 };
 
+enum mt76_wed_state {
+	MT76_WED_DEFAULT,
+	MT76_WED_ACTIVE,
+	MT76_WED_WDS_ACTIVE,
+};
+
 struct mt76_bus_ops {
 	u32 (*rr)(struct mt76_dev *dev, u32 offset);
 	void (*wr)(struct mt76_dev *dev, u32 offset, u32 val);
@@ -1165,6 +1174,12 @@  void mt76_wed_dma_reset(struct mt76_dev *dev);
 int mt76_wed_net_setup_tc(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 			  struct net_device *netdev, enum tc_setup_type type,
 			  void *type_data);
+
+static inline int mt76_wcid_alloc(u32 *mask, int size)
+{
+	return __mt76_wcid_alloc(mask, size, MT76_WED_DEFAULT);
+}
+
 #ifdef CONFIG_NET_MEDIATEK_SOC_WED
 u32 mt76_wed_init_rx_buf(struct mtk_wed_device *wed, int size);
 int mt76_wed_offload_enable(struct mtk_wed_device *wed);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/main.c b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
index 3aa31c5cefa6..fcbf4f971026 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
@@ -744,9 +744,16 @@  int mt7915_mac_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 	struct mt7915_sta *msta = (struct mt7915_sta *)sta->drv_priv;
 	struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv;
 	bool ext_phy = mvif->phy != &dev->phy;
+	u8 flags = MT76_WED_DEFAULT;
 	int idx;
 
-	idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7915_WTBL_STA);
+	if (mtk_wed_device_active(&dev->mt76.mmio.wed) &&
+	    !is_mt7915(&dev->mt76)) {
+		flags = test_bit(MT_WCID_FLAG_4ADDR, &msta->wcid.flags) ?
+		       MT76_WED_WDS_ACTIVE : MT76_WED_ACTIVE;
+	}
+
+	idx = __mt76_wcid_alloc(mdev->wcid_mask, MT7915_WTBL_STA, flags);
 	if (idx < 0)
 		return -ENOSPC;
 
@@ -1271,6 +1278,11 @@  static void mt7915_sta_set_4addr(struct ieee80211_hw *hw,
 {
 	struct mt7915_dev *dev = mt7915_hw_dev(hw);
 	struct mt7915_sta *msta = (struct mt7915_sta *)sta->drv_priv;
+	int min = MT76_WED_WDS_MIN, max = MT76_WED_WDS_MAX;
+	struct ieee80211_sta *pre_sta;
+	struct mt7915_sta *pre_msta;
+	u8 flags = MT76_WED_DEFAULT;
+	int tmp_idx;
 
 	if (enabled)
 		set_bit(MT_WCID_FLAG_4ADDR, &msta->wcid.flags);
@@ -1280,6 +1292,37 @@  static void mt7915_sta_set_4addr(struct ieee80211_hw *hw,
 	if (!msta->wcid.sta)
 		return;
 
+	if (mtk_wed_device_active(&dev->mt76.mmio.wed) &&
+	    !is_mt7915(&dev->mt76) &&
+	    (msta->wcid.idx < min || msta->wcid.idx > max - 1)) {
+		pre_sta = kmemdup(sta, sizeof(*sta) + sizeof(*msta), GFP_KERNEL | __GFP_ZERO);
+		if (!pre_sta)
+			goto error_alloc;
+		pre_msta = (struct mt7915_sta *)pre_sta->drv_priv;
+
+		flags = test_bit(MT_WCID_FLAG_4ADDR, &msta->wcid.flags) ?
+			MT76_WED_WDS_ACTIVE : MT76_WED_ACTIVE;
+
+		tmp_idx = __mt76_wcid_alloc(dev->mt76.wcid_mask, MT7915_WTBL_STA, flags);
+		if (tmp_idx < 0)
+			goto error_wcid;
+		pre_msta->wcid.idx = (u16)tmp_idx;
+		mt7915_mac_sta_add(&dev->mt76, vif, pre_sta);
+		rcu_assign_pointer(dev->mt76.wcid[tmp_idx], &msta->wcid);
+
+		tmp_idx = msta->wcid.idx;
+		msta->wcid.idx = pre_msta->wcid.idx;
+		pre_msta->wcid.idx = (u16)tmp_idx;
+		rcu_assign_pointer(dev->mt76.wcid[tmp_idx], NULL);
+
+		synchronize_rcu();
+		mt7915_mac_sta_remove(&dev->mt76, vif, pre_sta);
+
+error_wcid:
+		kfree(pre_sta);
+	}
+
+error_alloc:
 	mt76_connac_mcu_wtbl_update_hdr_trans(&dev->mt76, vif, sta);
 }
 
@@ -1726,15 +1769,19 @@  mt7915_net_fill_forward_path(struct ieee80211_hw *hw,
 	if (!mtk_wed_device_active(wed))
 		return -ENODEV;
 
-	if (msta->wcid.idx > 0xff)
+	if (msta->wcid.idx > MT7915_WTBL_STA)
 		return -EIO;
 
 	path->type = DEV_PATH_MTK_WDMA;
 	path->dev = ctx->dev;
 	path->mtk_wdma.wdma_idx = wed->wdma_idx;
 	path->mtk_wdma.bss = mvif->mt76.idx;
-	path->mtk_wdma.wcid = is_mt7915(&dev->mt76) ? msta->wcid.idx : 0x3ff;
 	path->mtk_wdma.queue = phy != &dev->phy;
+	if (test_bit(MT_WCID_FLAG_4ADDR, &msta->wcid.flags) ||
+	    is_mt7915(&dev->mt76))
+		path->mtk_wdma.wcid = msta->wcid.idx;
+	else
+		path->mtk_wdma.wcid = 0x3ff;
 
 	ctx->dev = NULL;
 
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index 9d790f234e82..191f966c3f32 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -2385,10 +2385,20 @@  int mt7915_mcu_init_firmware(struct mt7915_dev *dev)
 
 	mt76_connac_mcu_del_wtbl_all(&dev->mt76);
 
-	if ((mtk_wed_device_active(&dev->mt76.mmio.wed) &&
-	     is_mt7915(&dev->mt76)) ||
-	    !mtk_wed_get_rx_capa(&dev->mt76.mmio.wed))
-		mt7915_mcu_wa_cmd(dev, MCU_WA_PARAM_CMD(CAPABILITY), 0, 0, 0);
+#if IS_ENABLED(CONFIG_NET_MEDIATEK_SOC_WED)
+	if (mtk_wed_device_active(&dev->mt76.mmio.wed)) {
+		if (is_mt7915(&dev->mt76) ||
+		    !mtk_wed_get_rx_capa(&dev->mt76.mmio.wed))
+			ret = mt7915_mcu_wa_cmd(dev, MCU_WA_PARAM_CMD(CAPABILITY),
+						0, 0, 0);
+		else
+			ret = mt7915_mcu_wa_cmd(dev, MCU_WA_PARAM_CMD(SET),
+						MCU_WA_PARAM_WED_VERSION,
+						dev->mt76.mmio.wed.rev_id, 0);
+		if (ret)
+			return ret;
+	}
+#endif
 
 	ret = mt7915_mcu_set_mwds(dev, 1);
 	if (ret)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
index 49476a4182fd..c3dd0cb4a5d3 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
@@ -278,6 +278,7 @@  enum {
 	MCU_WA_PARAM_PDMA_RX = 0x04,
 	MCU_WA_PARAM_CPU_UTIL = 0x0b,
 	MCU_WA_PARAM_RED = 0x0e,
+	MCU_WA_PARAM_WED_VERSION = 0x32,
 	MCU_WA_PARAM_RED_SETTING = 0x40,
 };
 
diff --git a/drivers/net/wireless/mediatek/mt76/util.c b/drivers/net/wireless/mediatek/mt76/util.c
index 95b3dc96e4c4..e80bef2b33a1 100644
--- a/drivers/net/wireless/mediatek/mt76/util.c
+++ b/drivers/net/wireless/mediatek/mt76/util.c
@@ -42,8 +42,10 @@  bool ____mt76_poll_msec(struct mt76_dev *dev, u32 offset, u32 mask, u32 val,
 }
 EXPORT_SYMBOL_GPL(____mt76_poll_msec);
 
-int mt76_wcid_alloc(u32 *mask, int size)
+int __mt76_wcid_alloc(u32 *mask, int size, u8 flag)
 {
+	int max = MT76_WED_WDS_MAX;
+	int min = MT76_WED_WDS_MIN;
 	int i, idx = 0, cur;
 
 	for (i = 0; i < DIV_ROUND_UP(size, 32); i++) {
@@ -53,16 +55,45 @@  int mt76_wcid_alloc(u32 *mask, int size)
 
 		idx--;
 		cur = i * 32 + idx;
-		if (cur >= size)
+
+		switch (flag) {
+		case MT76_WED_ACTIVE:
+			if (cur >= min && cur < max)
+				continue;
+
+			if (cur >= size) {
+				u32 end = max - min - 1;
+
+				i = min / 32;
+				idx = ffs(~mask[i] & GENMASK(end, 0));
+				if (!idx)
+					goto error;
+				idx--;
+				cur = min + idx;
+			}
+
 			break;
+		case MT76_WED_WDS_ACTIVE:
+			if (cur < min)
+				continue;
+			if (cur >= max)
+				goto error;
+
+			break;
+		default:
+			if (cur >= size)
+				goto error;
+			break;
+		}
 
 		mask[i] |= BIT(idx);
 		return cur;
 	}
 
+error:
 	return -1;
 }
-EXPORT_SYMBOL_GPL(mt76_wcid_alloc);
+EXPORT_SYMBOL_GPL(__mt76_wcid_alloc);
 
 int mt76_get_min_avg_rssi(struct mt76_dev *dev, u8 phy_idx)
 {
diff --git a/drivers/net/wireless/mediatek/mt76/util.h b/drivers/net/wireless/mediatek/mt76/util.h
index 260965dde94c..fe95a847182e 100644
--- a/drivers/net/wireless/mediatek/mt76/util.h
+++ b/drivers/net/wireless/mediatek/mt76/util.h
@@ -27,7 +27,7 @@  enum {
 #define MT76_INCR(_var, _size) \
 	(_var = (((_var) + 1) % (_size)))
 
-int mt76_wcid_alloc(u32 *mask, int size);
+int __mt76_wcid_alloc(u32 *mask, int size, u8 flags);
 
 static inline void
 mt76_wcid_mask_set(u32 *mask, int idx)