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wifi: mt76: mt7915: deal with special variant of mt7916

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A variant of mt7916 supports up to 3 tx/rx paths but with only
2 spatial streams. An example usage of the 3rd path is to server as
an auxiliary for beamforming.
In order to deal with this case, this patch reworks some parts to
correctly use paths or streams.

Signed-off-by: Peter Chiu <[email protected]>
Signed-off-by: Shayne Chen <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Peter Chiu
2022-10-01 14:38:05 +02:00
committed by Felix Fietkau
parent ad3d0f8db0
commit 6606507317
3 changed files with 24 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files
mt7915/init.c
+18 -19
View File
@@ -703,13 +703,13 @@ mt7915_init_hardware(struct mt7915_dev *dev, struct mt7915_phy *phy2)
void mt7915_set_stream_vht_txbf_caps(struct mt7915_phy *phy)
{
int nss;
int sts;
u32 *cap;
if (!phy->mt76->cap.has_5ghz)
return;
nss = hweight8(phy->mt76->chainmask);
sts = hweight8(phy->mt76->chainmask);
cap = &phy->mt76->sband_5g.sband.vht_cap.cap;
*cap |= IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
@@ -720,28 +720,27 @@ void mt7915_set_stream_vht_txbf_caps(struct mt7915_phy *phy)
IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE);
if (nss < 2)
if (sts < 2)
return;
*cap |= IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE |
FIELD_PREP(IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK,
nss - 1);
sts - 1);
}
static void
mt7915_set_stream_he_txbf_caps(struct mt7915_dev *dev,
struct ieee80211_sta_he_cap *he_cap,
int vif, int nss)
mt7915_set_stream_he_txbf_caps(struct mt7915_phy *phy,
struct ieee80211_sta_he_cap *he_cap, int vif)
{
struct mt7915_dev *dev = phy->dev;
struct ieee80211_he_cap_elem *elem = &he_cap->he_cap_elem;
u8 c, nss_160;
int sts = hweight8(phy->mt76->chainmask);
u8 c, sts_160 = sts;
/* Can do 1/2 of NSS streams in 160Mhz mode for mt7915 */
/* Can do 1/2 of STS in 160Mhz mode for mt7915 */
if (is_mt7915(&dev->mt76) && !dev->dbdc_support)
nss_160 = nss / 2;
else
nss_160 = nss;
sts_160 /= 2;
#ifdef CONFIG_MAC80211_MESH
if (vif == NL80211_IFTYPE_MESH_POINT)
@@ -781,11 +780,11 @@ mt7915_set_stream_he_txbf_caps(struct mt7915_dev *dev,
elem->phy_cap_info[6] |= c;
if (nss < 2)
if (sts < 2)
return;
/* the maximum cap is 4 x 3, (Nr, Nc) = (3, 2) */
elem->phy_cap_info[7] |= min_t(int, nss - 1, 2) << 3;
elem->phy_cap_info[7] |= min_t(int, sts - 1, 2) << 3;
if (vif != NL80211_IFTYPE_AP)
return;
@@ -794,12 +793,12 @@ mt7915_set_stream_he_txbf_caps(struct mt7915_dev *dev,
elem->phy_cap_info[4] |= IEEE80211_HE_PHY_CAP4_MU_BEAMFORMER;
/* num_snd_dim
* for mt7915, max supported nss is 2 for bw > 80MHz
* for mt7915, max supported sts is 2 for bw > 80MHz
*/
c = FIELD_PREP(IEEE80211_HE_PHY_CAP5_BEAMFORMEE_NUM_SND_DIM_UNDER_80MHZ_MASK,
nss - 1) |
sts - 1) |
FIELD_PREP(IEEE80211_HE_PHY_CAP5_BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ_MASK,
nss_160 - 1);
sts_160 - 1);
elem->phy_cap_info[5] |= c;
c = IEEE80211_HE_PHY_CAP6_TRIG_SU_BEAMFORMING_FB |
@@ -839,7 +838,7 @@ mt7915_init_he_caps(struct mt7915_phy *phy, enum nl80211_band band,
struct ieee80211_sband_iftype_data *data)
{
struct mt7915_dev *dev = phy->dev;
int i, idx = 0, nss = hweight8(phy->mt76->chainmask);
int i, idx = 0, nss = hweight8(phy->mt76->antenna_mask);
u16 mcs_map = 0;
u16 mcs_map_160 = 0;
u8 nss_160;
@@ -972,7 +971,7 @@ mt7915_init_he_caps(struct mt7915_phy *phy, enum nl80211_band band,
he_mcs->rx_mcs_80p80 = cpu_to_le16(mcs_map_160);
he_mcs->tx_mcs_80p80 = cpu_to_le16(mcs_map_160);
mt7915_set_stream_he_txbf_caps(dev, he_cap, i, nss);
mt7915_set_stream_he_txbf_caps(phy, he_cap, i);
memset(he_cap->ppe_thres, 0, sizeof(he_cap->ppe_thres));
if (he_cap_elem->phy_cap_info[6] &
mt7915/main.c
+5 -4
View File
@@ -964,10 +964,11 @@ mt7915_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant)
phy->mt76->antenna_mask = tx_ant;
if (ext_phy)
tx_ant <<= dev->chainshift;
phy->mt76->chainmask = tx_ant;
/* handle a variant of mt7916 which has 3T3R but nss2 on 5 GHz band */
if (is_mt7916(&dev->mt76) && ext_phy && hweight8(tx_ant) == max_nss)
phy->mt76->chainmask = dev->chainmask >> dev->chainshift;
else
phy->mt76->chainmask = tx_ant << (dev->chainshift * ext_phy);
mt76_set_stream_caps(phy->mt76, true);
mt7915_set_stream_vht_txbf_caps(phy);
mt7915/mcu.c
+1 -1
View File
@@ -485,7 +485,7 @@ static void
mt7915_mcu_bss_ra_tlv(struct sk_buff *skb, struct ieee80211_vif *vif,
struct mt7915_phy *phy)
{
int max_nss = hweight8(phy->mt76->chainmask);
int max_nss = hweight8(phy->mt76->antenna_mask);
struct bss_info_ra *ra;
struct tlv *tlv;