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Re: [PATCH v4] wifi: mt76: mt7915: add wds support when wed is enabled

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Hi,

Could anyone give this patch a review?

Best regards,
Shengyu

在 2024/7/7 17:22, Shengyu Qu 写道:
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.

Tested-by: Sujuan Chen <sujuan.chen@xxxxxxxxxxxx>
Co-developed-by: Bo Jiao <bo.jiao@xxxxxxxxxxxx>
Signed-off-by: Bo Jiao <bo.jiao@xxxxxxxxxxxx>
Signed-off-by: Sujuan Chen <sujuan.chen@xxxxxxxxxxxx>
Signed-off-by: Shengyu Qu <wiagn233@xxxxxxxxxxx>
---
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
---
  drivers/net/wireless/mediatek/mt76/mt76.h     |  9 +++++
  .../net/wireless/mediatek/mt76/mt7915/main.c  | 32 ++++++++++++++--
  .../net/wireless/mediatek/mt76/mt7915/mcu.c   | 16 ++++++--
  .../net/wireless/mediatek/mt76/mt7915/mcu.h   |  1 +
  drivers/net/wireless/mediatek/mt76/util.c     | 37 +++++++++++++++++--
  drivers/net/wireless/mediatek/mt76/util.h     |  7 +++-
  6 files changed, 91 insertions(+), 11 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h
index 15f83b5adac7..fd211f2cf13c 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)
@@ -71,6 +74,12 @@ 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);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/main.c b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
index 049223df9beb..dc4d87e004a0 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
@@ -745,8 +745,15 @@ int mt7915_mac_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif,
  	bool ext_phy = mvif->phy != &dev->phy;
  	int ret, idx;
  	u32 addr;
+	u8 flags = MT76_WED_DEFAULT;
- 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;
@@ -1201,12 +1208,27 @@ 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;
if (enabled)
  		set_bit(MT_WCID_FLAG_4ADDR, &msta->wcid.flags);
  	else
  		clear_bit(MT_WCID_FLAG_4ADDR, &msta->wcid.flags);
+ if (mtk_wed_device_active(&dev->mt76.mmio.wed) &&
+	    !is_mt7915(&dev->mt76) &&
+	    (msta->wcid.idx < min || msta->wcid.idx > max - 1)) {
+		struct ieee80211_sta *pre_sta;
+
+		pre_sta = kzalloc(sizeof(*sta) + sizeof(*msta), GFP_KERNEL);
+		mt76_sta_pre_rcu_remove(hw, vif, sta);
+		memmove(pre_sta, sta, sizeof(*sta) + sizeof(*msta));
+		mt7915_sta_add(hw, vif, sta);
+		synchronize_rcu();
+		mt7915_sta_remove(hw, vif, pre_sta);
+		kfree(pre_sta);
+	}
+
  	mt76_connac_mcu_wtbl_update_hdr_trans(&dev->mt76, vif, sta);
  }
@@ -1644,15 +1666,19 @@ 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 9599adf104b1..c01d1b40eeef 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -2350,10 +2350,18 @@ int mt7915_mcu_init_firmware(struct mt7915_dev *dev)
  	if (ret)
  		return ret;
- 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 (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;
+	}
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 b41ac4aaced7..b2bf5472b2d7 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
@@ -279,6 +279,7 @@ enum {
  	MCU_WA_PARAM_CPU_UTIL = 0x0b,
  	MCU_WA_PARAM_RED = 0x0e,
  	MCU_WA_PARAM_RED_SETTING = 0x40,
+	MCU_WA_PARAM_WED_VERSION = 0x32,
  };
enum mcu_mmps_mode {
diff --git a/drivers/net/wireless/mediatek/mt76/util.c b/drivers/net/wireless/mediatek/mt76/util.c
index d6c01a2dd198..461b74068fc3 100644
--- a/drivers/net/wireless/mediatek/mt76/util.c
+++ b/drivers/net/wireless/mediatek/mt76/util.c
@@ -42,9 +42,11 @@ 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 i, idx = 0, cur;
+	int min = MT76_WED_WDS_MIN;
+	int max = MT76_WED_WDS_MAX;
for (i = 0; i < DIV_ROUND_UP(size, 32); i++) {
  		idx = ffs(~mask[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, bool ext_phy)
  {
diff --git a/drivers/net/wireless/mediatek/mt76/util.h b/drivers/net/wireless/mediatek/mt76/util.h
index 260965dde94c..99b7263c0a20 100644
--- a/drivers/net/wireless/mediatek/mt76/util.h
+++ b/drivers/net/wireless/mediatek/mt76/util.h
@@ -27,7 +27,12 @@ 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 int mt76_wcid_alloc(u32 *mask, int size)
+{
+	return __mt76_wcid_alloc(mask, size, 0);
+}
static inline void
  mt76_wcid_mask_set(u32 *mask, int idx)

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