Commit 9fac3c81 authored by Ryder Lee's avatar Ryder Lee Committed by Felix Fietkau
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mt76: mt7915: set peer Tx fixed rate through debugfs 



Driver can manually set fixed rate for each peer through debugfs.

May use .set_bitrate_mask callback and iterate stations under the
current vif to achieve the aim once it supports HE rate.

Signed-off-by: default avatarRyder Lee <ryder.lee@mediatek.com>
Signed-off-by: default avatarShayne Chen <shayne.chen@mediatek.com>
Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
parent b02eafae

drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c

+13 −0
Original line number Diff line number Diff line
@@ -305,6 +305,18 @@ int mt7915_init_debugfs(struct mt7915_dev *dev) 


/** per-station debugfs **/



/* usage: <tx mode> <ldpc> <stbc> <bw> <gi> <nss> <mcs> */

static int mt7915_sta_fixed_rate_set(void *data, u64 rate)

{

	struct ieee80211_sta *sta = data;

	struct mt7915_sta *msta = (struct mt7915_sta *)sta->drv_priv;



	return mt7915_mcu_set_fixed_rate(msta->vif->dev, sta, rate);

}



DEFINE_DEBUGFS_ATTRIBUTE(fops_fixed_rate, NULL,

			 mt7915_sta_fixed_rate_set, "%llx\n");



static int

mt7915_sta_stats_read(struct seq_file *s, void *data)

{
@@ -365,5 +377,6 @@ static const struct file_operations fops_sta_stats = { 
void mt7915_sta_add_debugfs(struct ieee80211_hw *hw, struct ieee80211_vif *vif,

			    struct ieee80211_sta *sta, struct dentry *dir)

{

	debugfs_create_file("fixed_rate", 0600, dir, sta, &fops_fixed_rate);

	debugfs_create_file("stats", 0400, dir, sta, &fops_sta_stats);

}

drivers/net/wireless/mediatek/mt76/mt7915/mcu.c

+46 −0
Original line number Diff line number Diff line
@@ -1735,6 +1735,52 @@ int mt7915_mcu_add_sta(struct mt7915_dev *dev, struct ieee80211_vif *vif, 
	return 0;

}



int mt7915_mcu_set_fixed_rate(struct mt7915_dev *dev,

			      struct ieee80211_sta *sta, u32 rate)

{

	struct mt7915_sta *msta = (struct mt7915_sta *)sta->drv_priv;

	struct mt7915_vif *mvif = msta->vif;

	struct sta_rec_ra_fixed *ra;

	struct sk_buff *skb;

	struct tlv *tlv;



	skb = mt7915_mcu_alloc_sta_req(dev, mvif, msta,

				       MT7915_STA_UPDATE_MAX_SIZE);

	if (IS_ERR(skb))

		return PTR_ERR(skb);



	tlv = mt7915_mcu_add_tlv(skb, STA_REC_RA_UPDATE, sizeof(*ra));

	ra = (struct sta_rec_ra_fixed *)tlv;



	if (!rate) {

		ra->field = cpu_to_le32(RATE_PARAM_AUTO);

		goto out;

	} else {

		ra->field = cpu_to_le32(RATE_PARAM_FIXED);

	}



	ra->phy.type = FIELD_GET(RATE_CFG_PHY_TYPE, rate);

	ra->phy.bw = FIELD_GET(RATE_CFG_BW, rate);

	ra->phy.nss = FIELD_GET(RATE_CFG_NSS, rate);

	ra->phy.mcs = FIELD_GET(RATE_CFG_MCS, rate);

	ra->phy.stbc = FIELD_GET(RATE_CFG_STBC, rate);



	if (ra->phy.bw)

		ra->phy.ldpc = 7;

	else

		ra->phy.ldpc = FIELD_GET(RATE_CFG_LDPC, rate) * 7;



	/* HT/VHT - SGI: 1, LGI: 0; HE - SGI: 0, MGI: 1, LGI: 2 */

	if (ra->phy.type > MT_PHY_TYPE_VHT)

		ra->phy.sgi = ra->phy.mcs * 85;

	else

		ra->phy.sgi = ra->phy.mcs * 15;



out:

	return __mt76_mcu_skb_send_msg(&dev->mt76, skb,

				       MCU_EXT_CMD_STA_REC_UPDATE, true);

}



int mt7915_mcu_add_dev_info(struct mt7915_dev *dev,

			    struct ieee80211_vif *vif, bool enable)

{

drivers/net/wireless/mediatek/mt76/mt7915/mcu.h

+28 −0
Original line number Diff line number Diff line
@@ -803,6 +803,34 @@ struct sta_rec_ra { 
	struct ra_phy phy;

} __packed;



struct sta_rec_ra_fixed {

	__le16 tag;

	__le16 len;



	__le32 field;

	u8 op_mode;

	u8 op_vht_chan_width;

	u8 op_vht_rx_nss;

	u8 op_vht_rx_nss_type;



	struct ra_phy phy;



	u8 spe_en;

	u8 short_preamble;

	u8 is_5g;

	u8 mmps_mode;

} __packed;



#define RATE_PARAM_FIXED		3

#define RATE_PARAM_AUTO			20

#define RATE_CFG_MCS			GENMASK(3, 0)

#define RATE_CFG_NSS			GENMASK(7, 4)

#define RATE_CFG_GI			GENMASK(11, 8)

#define RATE_CFG_BW			GENMASK(15, 12)

#define RATE_CFG_STBC			GENMASK(19, 16)

#define RATE_CFG_LDPC			GENMASK(23, 20)

#define RATE_CFG_PHY_TYPE		GENMASK(27, 24)



enum {

	STA_REC_BASIC,

	STA_REC_RA,

drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h

+2 −0
Original line number Diff line number Diff line
@@ -303,6 +303,8 @@ int mt7915_mcu_add_smps(struct mt7915_dev *dev, struct ieee80211_vif *vif, 
			struct ieee80211_sta *sta);

int mt7915_mcu_set_chan_info(struct mt7915_phy *phy, int cmd);

int mt7915_mcu_set_tx(struct mt7915_dev *dev, struct ieee80211_vif *vif);

int mt7915_mcu_set_fixed_rate(struct mt7915_dev *dev,

			      struct ieee80211_sta *sta, u32 rate);

int mt7915_mcu_set_eeprom(struct mt7915_dev *dev);

int mt7915_mcu_get_eeprom(struct mt7915_dev *dev, u32 offset);

int mt7915_mcu_set_mac(struct mt7915_dev *dev, int band, bool enable,

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