[PATCH v5] wifi: mt76: mt7915: add wds support when wed is enabled
Shengyu Qu
wiagn233 at outlook.com
Sat Aug 3 00:58:15 PDT 2024
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 at mediatek.com>
Co-developed-by: Bo Jiao <bo.jiao at mediatek.com>
Signed-off-by: Bo Jiao <bo.jiao at mediatek.com>
Signed-off-by: Sujuan Chen <sujuan.chen at mediatek.com>
Signed-off-by: Shengyu Qu <wiagn233 at 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
---
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 4a58a78d5ed25..1186a4998faff 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 049223df9beb1..dc4d87e004a0f 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 2185cd24e2e1c..0f715a4c21ada 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -2352,10 +2352,18 @@ 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 b41ac4aaced7f..b2bf5472b2d70 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 d6c01a2dd1988..461b74068fc30 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 260965dde94cf..99b7263c0a205 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)
--
2.34.1
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