From: Howard Hsu <howard-yh.hsu@xxxxxxxxxxxx>
Add support to configure parameters at runtime, such as mcs, gi, and
he_ltf. Note that EHT mode does not support this feature yet.
Co-developed-by: MeiChia Chiu <MeiChia.Chiu@xxxxxxxxxxxx>
Signed-off-by: MeiChia Chiu <MeiChia.Chiu@xxxxxxxxxxxx>
Signed-off-by: Howard Hsu <howard-yh.hsu@xxxxxxxxxxxx>
Signed-off-by: Shayne Chen <shayne.chen@xxxxxxxxxxxx>
---
.../net/wireless/mediatek/mt76/mt7996/mcu.c | 135 +++++++++++++++++-
1 file changed, 133 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
index b0e6f51041fd..3b56b90bb956 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
@@ -1624,6 +1624,132 @@ int mt7996_mcu_set_fixed_rate_ctrl(struct mt7996_dev *dev,
MCU_WM_UNI_CMD(RA), true);
}
+static int
+mt7996_mcu_set_fixed_field(struct mt7996_dev *dev, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta, void *data, u32 field)
+{
+ struct mt7996_vif *mvif = (struct mt7996_vif *)vif->drv_priv;
+ struct mt7996_sta *msta = (struct mt7996_sta *)sta->drv_priv;
+ struct sta_phy *phy = data;
+ struct sta_rec_ra_fixed *ra;
+ struct sk_buff *skb;
+ struct tlv *tlv;
+
+ skb = __mt76_connac_mcu_alloc_sta_req(&dev->mt76, &mvif->mt76,
+ &msta->wcid,
+ MT7996_STA_UPDATE_MAX_SIZE);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ tlv = mt76_connac_mcu_add_tlv(skb, STA_REC_RA_UPDATE, sizeof(*ra));
+ ra = (struct sta_rec_ra_fixed *)tlv;
+
+ switch (field) {
+ case RATE_PARAM_AUTO:
+ break;
+ case RATE_PARAM_FIXED:
+ case RATE_PARAM_FIXED_MCS:
+ case RATE_PARAM_FIXED_GI:
+ case RATE_PARAM_FIXED_HE_LTF:
+ if (phy)
+ ra->phy = *phy;
+ break;
+ default:
+ break;
+ }
+ ra->field = cpu_to_le32(field);
+
+ return mt76_mcu_skb_send_msg(&dev->mt76, skb,
+ MCU_WMWA_UNI_CMD(STA_REC_UPDATE), true);
+}
+
+static int
+mt7996_mcu_add_rate_ctrl_fixed(struct mt7996_dev *dev, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct mt7996_vif *mvif = (struct mt7996_vif *)vif->drv_priv;
+ struct cfg80211_chan_def *chandef = &mvif->phy->mt76->chandef;
+ struct cfg80211_bitrate_mask *mask = &mvif->bitrate_mask;
+ enum nl80211_band band = chandef->chan->band;
+ struct sta_phy phy = {};
+ int ret, nrates = 0;
+
+#define __sta_phy_bitrate_mask_check(_mcs, _gi, _ht, _he) \
+ do { \
+ u8 i, gi = mask->control[band]._gi; \
+ gi = (_he) ? gi : gi == NL80211_TXRATE_FORCE_SGI; \
+ phy.sgi = gi; \
+ phy.he_ltf = mask->control[band].he_ltf; \
+ for (i = 0; i < ARRAY_SIZE(mask->control[band]._mcs); i++) { \
+ if (!mask->control[band]._mcs[i]) \
+ continue; \
+ nrates += hweight16(mask->control[band]._mcs[i]); \
+ phy.mcs = ffs(mask->control[band]._mcs[i]) - 1; \
+ if (_ht) \
+ phy.mcs += 8 * i; \
+ } \
+ } while (0)
+
+ if (sta->deflink.he_cap.has_he) {
+ __sta_phy_bitrate_mask_check(he_mcs, he_gi, 0, 1);
+ } else if (sta->deflink.vht_cap.vht_supported) {
+ __sta_phy_bitrate_mask_check(vht_mcs, gi, 0, 0);
+ } else if (sta->deflink.ht_cap.ht_supported) {
+ __sta_phy_bitrate_mask_check(ht_mcs, gi, 1, 0);
+ } else {
+ nrates = hweight32(mask->control[band].legacy);
+ phy.mcs = ffs(mask->control[band].legacy) - 1;
+ }
+#undef __sta_phy_bitrate_mask_check
+
+ /* fall back to auto rate control */
+ if (mask->control[band].gi == NL80211_TXRATE_DEFAULT_GI &&
+ mask->control[band].he_gi == GENMASK(7, 0) &&
+ mask->control[band].he_ltf == GENMASK(7, 0) &&
+ nrates != 1)
+ return 0;
+
+ /* fixed single rate */
+ if (nrates == 1) {
+ ret = mt7996_mcu_set_fixed_field(dev, vif, sta, &phy,
+ RATE_PARAM_FIXED_MCS);
+ if (ret)
+ return ret;
+ }
+
+ /* fixed GI */
+ if (mask->control[band].gi != NL80211_TXRATE_DEFAULT_GI ||
+ mask->control[band].he_gi != GENMASK(7, 0)) {
+ struct mt7996_sta *msta = (struct mt7996_sta *)sta->drv_priv;
+ u32 addr;
+
+ /* firmware updates only TXCMD but doesn't take WTBL into
+ * account, so driver should update here to reflect the
+ * actual txrate hardware sends out.
+ */
+ addr = mt7996_mac_wtbl_lmac_addr(dev, msta->wcid.idx, 7);
+ if (sta->deflink.he_cap.has_he)
+ mt76_rmw_field(dev, addr, GENMASK(31, 24), phy.sgi);
+ else
+ mt76_rmw_field(dev, addr, GENMASK(15, 12), phy.sgi);
+
+ ret = mt7996_mcu_set_fixed_field(dev, vif, sta, &phy,
+ RATE_PARAM_FIXED_GI);
+ if (ret)
+ return ret;
+ }
+
+ /* fixed HE_LTF */
+ if (mask->control[band].he_ltf != GENMASK(7, 0)) {
+ ret = mt7996_mcu_set_fixed_field(dev, vif, sta, &phy,
+ RATE_PARAM_FIXED_HE_LTF);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
static void
mt7996_mcu_sta_rate_ctrl_tlv(struct sk_buff *skb, struct mt7996_dev *dev,
struct ieee80211_vif *vif, struct ieee80211_sta *sta)
@@ -1733,6 +1859,7 @@ int mt7996_mcu_add_rate_ctrl(struct mt7996_dev *dev, struct ieee80211_vif *vif,
struct mt7996_vif *mvif = (struct mt7996_vif *)vif->drv_priv;
struct mt7996_sta *msta = (struct mt7996_sta *)sta->drv_priv;
struct sk_buff *skb;
+ int ret;
skb = __mt76_connac_mcu_alloc_sta_req(&dev->mt76, &mvif->mt76,
&msta->wcid,
@@ -1752,8 +1879,12 @@ int mt7996_mcu_add_rate_ctrl(struct mt7996_dev *dev, struct ieee80211_vif *vif,
*/
mt7996_mcu_sta_rate_ctrl_tlv(skb, dev, vif, sta);
- return mt76_mcu_skb_send_msg(&dev->mt76, skb,
- MCU_WMWA_UNI_CMD(STA_REC_UPDATE), true);
+ ret = mt76_mcu_skb_send_msg(&dev->mt76, skb,
+ MCU_WMWA_UNI_CMD(STA_REC_UPDATE), true);
+ if (ret)
+ return ret;
+
+ return mt7996_mcu_add_rate_ctrl_fixed(dev, vif, sta);
}
static int
--
2.39.2
